Showing posts with label Process Planning. Show all posts
Showing posts with label Process Planning. Show all posts

Friday, August 8, 2025

Technical Drawings - Important Guidelines - Process Planning and Industrial Engineering

Lesson 66 of Industrial Engineering ONLINE Course.

Lesson 67. Selection of Metal Removal Processes - Initial Steps - Process Planning and Process Industrial Engineering

4. Technical Drawings


1 Drawing

1.1Dimensioning Dimensioning from datum
1.2 Redundant dimensioning
1.3 Stackup of tolerances by arithmetic method
1.4 Geometric tolerances
1.5 Geometric tolerances interpretation
1.6 Surface roughness
1.6.1 Definition of surface finish methods

2.Production Drawing Tolerances

Process planners have to understand the functional requirements of the design and can suggest design changes that make production easy and economical.

2.1 Tolerancing in production
Any dimension and its surface finish are not achieved in one production operation. Therefore, each production operation are to be specified with a tolerance such that the sum of all the tolerance results in the tolerance specified for the component at the end of the  final operation.

2.1.1 Process to meet geometric tolerances

Causes of geometric deviations

1. Fixturing: Multiple fixturing increases deviations.
2. Machine accuracy and rigidity
3. Tool accuracy
4. Tool deflection
5. Cutting temperature
6. Vibrations in machine tool and cutting tool
7. Material heterogeneities
8. Kinematics

Hence careful choice and combination of machine tools, cutting conditions, tooling and fixtures and production operation level of tolerance strategies are required to achieve the tolerances specified in component drawing.

2.1.2 Production tolerancing
2.2 Tolerances in forming operations

3 Short Review of Statistical Tolerancing
3.1 Process Capability






1 Drawing

Basics of Engineering Drawings - Reading Drawings

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https://www.youtube.com/channel/UC9eqr6EBMP9cOZHwSjGeAKA
_____________

1.1 Dimensioning  from datum

For the dimensions of parts that would assemble, the dimensioning should originate at a datum. The datum is indicated in the drawing.

1.2 Redundant dimensioning

In a given direction, a surface should be indicated by one and only dimension.

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_____________

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1.3 Stackup of tolerances by arithmetic method

For examples in case of step turning with multiple steps, the interval tolerance of the result is equal to the sum of the tolerances of the components in length.

1.4 Geometric tolerances

The geometrical tolerances of form and positions are defined in the ISO standard for Tolerances for Form and Position (ISO Standard 111, 1983)

Terminology of Geometric Tolerances

Category                                     Characteristics

Form                                 Flatness

Orientation                        Perpendicularity

Location                            Position

Runout                              Circular Runout

Profile                                Profile of a line

1.5 Geometric tolerances interpretation

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https://www.youtube.com/watch?v=oXqYOKF7Q7U
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https://www.youtube.com/watch?v=NArW09DFhf8
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https://www.youtube.com/watch?v=yEIX0gIa5Tk

Channel  https://www.youtube.com/channel/UCFw3UXCq7iG3LBh4JyK5d0A
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1.6 Surface roughness

1.6.1 Definition of surface finish methods

Surface Finish Parameters used in industry today.

1. Arithmetic Average Roughness

2. Geometric Average Roughness

3. Peak-to-Valley Roughness Height

4. Ten-Point Height

5. Bearing Length Ratio

6. Peak Count

Related Articles

Surface Finish - Industrial Engineering and Productivity Aspects

Surface Finish, Integrity and Flatness in Machining


2.Production Drawing Tolerances

Process planners have to understand the functional requirements of the design and can suggest design changes that make production easy and economical.

2.1 Tolerancing in production
Any dimension and its surface finish are not achieved in one production operation. Therefore, each production operation are to be specified with a tolerance such that the sum of all the tolerance results in the tolerance specified for the component at the end of the  final operation.

2.1.1 Process to meet geometric tolerances

Causes of geometric deviations

1. Fixturing: Multiple fixturing increases deviations.
2. Machine accuracy and rigidity
3. Tool accuracy
4. Tool deflection
5. Cutting temperature
6. Vibrations in machine tool and cutting tool
7. Material heterogeneities
8. Kinematics

Hence careful choice and combination of machine tools, cutting conditions, tooling and fixtures and production operation level of tolerance strategies are required to achieve the tolerances specified in component drawing.



2.1.2 Production tolerancing - Feasibility

Halevi gave the example of set up with fixture repeatability of 0.1 mm and the machine accuracy of 0.02 mm. When the counterbore is made this machine and fixture, the length of the internal minor diameter will come 20 + or - 0.04.  It is acceptable because the required dimension is  20 + or - 0.1 mm.

The total length of the work piece is 70 mm, minor bore is 20 mm and counter bore length is 30 mm. So the length of the uncut portion is 20 mm and with this present errors it will come out to be 20 + or - 0.14. Acceptable because required dimension is 20 + or - 0.15.

But if machine accuracy is 0.03 mm, the resulting dimension tolerance will be 20 + or - 0.16. Not acceptable. Hence it is important to know the error quantities and see whether the machine and accessories in combination can produce the part to the specification or not.





2.2 Tolerances in forming operations


Halevi has given the example of a die working on a sheet metal blank.  He says errors or tolerances achieved are of three types.

1. Tool dependent dimensions.
2. non-tool-dependent and
3. non-tool dependent dimensions in the direction of the closing the tool (travel of the punch).

Machine accuracy is estimated by type three errors. Improvement of machine accuracy and jigs and fixtures will minimize type 2 errors. Tool accuracy has to be improved for type 1 errors.

3 Short Review of Statistical Tolerancing
3.1 Process Capability

Manickavasagam Natarajan   
𝗛𝗼𝘄 𝘁𝗼 𝗥𝗲𝗮𝗱 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗗𝗿𝗮𝘄𝗶𝗻𝗴𝘀??
Excellent Video to kick start your learning process 
Credit - GaugeHow® Mechanical Engineering YouTube channel 





Ud. 7.8.2025
Pub.23.7.2020







Tuesday, August 6, 2024

Production Process Planning - Sub-Module of Process Industrial Engineering

Sub-Module of Industrial Engineering ONLINE Course

Sub-Module of Process Industrial Engineering FREE ONLINE Course (Module)

Recommended Book for Detailed Reading

Process and Operation Planning by Gideon Halevi

Kluwer Academic Publishers, Dordrecht, 2003

https://books.google.co.in/books?id=tcHxCAAAQBAJ  - Preview

Sub-Module Lessons

64. Production Process Planning - Foundation for Production

65. Assembly Design - Process Planning & Industrial Engineering Perspective

66. Technical Drawings - Important Guidelines - Process Planning and Industrial Engineering

67. Selection of Metal Removal Processes - Initial Steps - Process Planning and Process Industrial Engineering

68. Fixturing and Clamping the Work Piece - Process Planning and Process Industrial Engineering

69. Determining Operation Type, Feed and Depth of Cuts for Multiple Cuts - Process Planning and Process Industrial Engineering

70. Selecting Cutting Speed - Process Planning and Process Industrial Engineering

71. Selecting a Machine for the Operation - Process Planning and Process Industrial Engineering

72. Selecting Tools for a Machining Operation - Process Planning and Process Industrial Engineering



Books


Setup Planning for Machining
Manjuri Hazarika, Uday Shanker Dixit
Springer, 27-Nov-2014 - Technology & Engineering - 137 pages

Professionals as well as researchers can benefit from this comprehensive introduction into the topic of setup planning, which reflects the latest state of research and gives hands-on examples. Starting with a brief but thorough introduction, this book explains the significance of setup planning in process planning and includes a reflection on its external constraints. Step-by-step the different phases of setup planning are outlined and traditional as well as modern approaches, such as fuzzy logic based setup planning, on the solution of setup planning problems are presented. Three detailed examples of applications provide a clear and accessible insight into the up-to-date techniques and various approaches in setup planning.



Knowledge-Based Process Planning for Construction and Manufacturing
Carlos Zozaya-Gorostiza
Elsevier, 02-Dec-2012 - Business & Economics - 320 pages

Knowledge-Based Process Planning for Construction and Manufacturing describes a knowledge-based system architecture that is used to develop process planning systems called PLANEX.

This book explains that PLANEX is a domain-independent, knowledge-based process planning system architecture. Starting from a description of the physical artifact to be constructed or manufactured, PLANEX generates the set of activities used to create the artifact. These activities, with their required resources, are linked into a process planning network which can be used in project scheduling or management. This text also reviews the concepts, requirements, and resulting architecture of PLANEX, including detailed descriptions of applications of the system in construction and manufacturing.

This publication is recommended to engineers, architects, and specialists interested in construction and manufacturing process planning.


Process Planning Optimization in Reconfigurable Manufacturing Systems

Farayi Musharavati
Universal-Publishers, 2010 - Technology & Engineering - 200 pages

To date, reconfigurable manufacturing systems (RMSs) are among the most effective manufacturing styles that can offer manufacturers an alternative way of facing up to the challenges of continual changes in production requirements within the global, competitive and dynamic manufacturing environments. However, availability of optimal process plans that are suitable for reconfigurable manufacturing is one of the key enablers - yet to be fully unlocked - for realizing the full benefits of true RMSs. To unlock the process planning key and advance the state of art of reconfigurable manufacturing in the manufacturing industry, a number of questions need to be answered: (i) what decision making models and (ii) what computational techniques, can be applied to provide optimal manufacturing process planning solutions that are suitable for logical reconfiguration in manufacturing systems? To answer these questions, you must understand how to model reconfigurable manufacturing activities in an optimization perspective. You must also understand how to develop and select appropriate optimization techniques for solving process planning problems in manufacturing systems. To this end, Process Planning Optimization in Reconfigurable Manufacturing Systems covers: the design and operation of RMSs, optimal process planning modelling for reconfigurable manufacturing and the design and implementation of heuristic algorithm design techniques. The author explores how to: model optimization problems, select suitable optimization techniques, develop optimization algorithms, comparatively analyze the performance of candidate metaheuristics and how to investigate the effects of optimal process planning solutions on operating levels in manufacturing systems. This book delineates five alternative heuristic algorithm design techniques ─ based on simulated annealing, genetic algorithms and the boltzmann machine ─ that are tasked to solve manufacturing process planning optimization problems in RMSs. After reading this book, you will understand: how a reconfigurable manufacturing system works, the different types of manufacturing optimization problems associated with reconfigurable manufacturing, as well as the conventional and intelligent techniques that are suitable for solving process planning optimization problems. You will also be able to develop and implement effective optimization procedures and algorithms for a wide spectrum of optimization problems in design and reconfigurable manufacturing.

Modelling and Management of Engineering Processes

Peter Heisig, P. John Clarkson, Sandor Vajna
Springer Science & Business Media, 01-Jun-2010 - Technology & Engineering - 213 pages

Modelling for Business Improvement contains the proceedings of the First International Conference on Process Modelling and Process Management (MMEP 2010) held in Cambridge, England, in March 2010. It contains contributions from an international group of leading researchers in the fields of process modelling and process management.

This conference will showcase recent trends in the modelling and management of engineering processes, explore potential synergies between different modelling approaches, gather and discuss future challenges for the management of engineering processes and discuss future research areas and topics.

Modelling for Business Improvement is divided into three main parts:

1. Theoretical foundation of modelling and management of engineering processes, and achievements in theory.

2. Experiences from management practice using various modelling methods and tools, and their future challenges.

3. New perspectives on modelling methods, techniques and tools.

Based on the latest achievements in this and related fields, the editors aim to landmark the research map for modelling and management of engineering processes for 2020.


Construction Process Planning and Management: An Owner's Guide to Successful Projects
Sidney M Levy
Butterworth-Heinemann, 24-Sept-2009 - Technology & Engineering - 392 pages

By their very nature, construction projects can create seemingly endless opportunities for conflict. Written by a best selling author with over 40 years of experiences in the construction and general contracting business, Construction Process Planning and Management provides you with the necessary tools to save time and money on your construction project. In this book, Sid Levy provides valuable advice for avoiding or working through the common problems that are a result of the long-term nature of construction projects, failure to select a ?project delivery system? appropriate to the project, incomplete drawing and specifications, unrealistic scheduling, poor communication and coordination among participants, and inadequate contract administration. From project genesis, through design development to contractor and contract selection, on to construction oversight, punch list and successful project close-out, this book will point out those pitfalls to avoid and offer practical advice at every step along the way.
Administer the general construction process including solicitation of contractor's qualifications (pre-qualify bidders), comparative analysis of bid packages, recommendation for contract award, contract document negotiation and documentation of job change orders
Provide Project Planning and on-site management and coordination of all construction projects
Ensure compliance of building construction rules and regulations and collaborate with chief engineers to monitor quality of construction
Conduct technical/plan review of construction documents and submit written responses identifying required corrections or changes
Design, implement and oversee Company standards for construction policies, practices and processes


Integrated Product and Process Design and Development: The Product Realization Process, Second Edition
Edward B. Magrab, Satyandra K. Gupta, F. Patrick McCluskey, Peter Sandborn
CRC Press, 28-Jul-2009 - Science - 304 pages

Since the publication of the first edition of Integrated Product and Process Design and Development: The Product Realization Process more than a decade ago, the product realization process has undergone a number of significant changes. Reflecting these advances, this second edition presents a thorough treatment of the modern tools used.

Process Planning - Design - Manufacturing Interface - Peter Scallen - 2003
http://books.google.co.in/books?id=R7GkqkbZbPIC


Handbook of Workability and Process Design
George E. Dieter, Howard A. Kuhn, S. Lee Semiatin
ASM International, 2003 - Metals - 409 pages
https://books.google.co.in/books?id=Hs57XaLW840C

Updated  6.8.2024, 21.9.2022,  18.7.2022, 29 Dec 2020
First published 22 July 2020

Production Process Planning - Foundation for Production

Lesson 64 of Industrial Engineering ONLINE Course

Lesson of Process Industrial Engineering FREE ONLINE Course (Module)


Industrial engineers have to understand process plans and analyze them. During observation and also based on process charts prepared by them based on observation, they have to notice the deviation from process plan in the actual production and enquire the reasons for them. In Toyota Production System, the shop personnel are given the responsibility for improving the process plans on a continuous basis. In this case, there are three departments looking for improving process plans. The process planning department, the industrial engineering department and the shop engineers and operators.

Introduction

Process planning is an essential engineering function of production engineering. An engineers first plans, makes a process drawing similar to the component design drawing and then executes it, follows the steps as indicated and achieves the desired result. A mechanic cuts an adds till he reaches the desired result. An engineer has the knowledge and skill to visualize the transformation of the job step by step, cut by cut. Hence first describes the complete process through operations and elements in drawings.

What are the steps in process planning.

Professor Gideon Halevi described them in chapters. The foundation of process planning is knowledge of engineering, both design theory and production processes. 


2. Selection of primary process - from purified metal or alloy to primary shape.

Under the above 8 heads, many more details are to be described like NC tool path.


Process plans are the basis of many decisions in setting up and expanding manufacturing systems and facilities.

To determine the feasibility of setting up a new business with one or more products, estimate of manufacturing cost is required to develop various feasible price points at which demand can be estimated. Estimation of manufacturing cost requires, a process plan at least certain basic core details.

To decide the buying of equipment and machines, types and numbers, process plan is required. To determine work force required, process plan is required.

Production planning and control department is mainly concerned with orders received and planning the flow of orders and the required materials and components in the production facility. The department uses the process plans and route sheets given by the process planning department.

Multiple Process Plans for a Component


The earlier practice was to release only one process plan for one component. In the modern practice, the recommendation is to release multiple process plans based on the facilities available in the factory and suppliers so that production planning can choose the plan the best suits the circumstances and minimize delay of jobs and idle time of machines in a planning period. 


In contrast to earlier periods, in the age of computers, component design and process planning are more parallel so that revisions can be done before designs are finalized and better and less costly designs are created. There is provision in this simultaneous or concurrent engineers to include cost accountants, cost estimators, industrial designers, industrial engineers etc. and utilize the knowledge of various specialists more at the initial design stage itself.

Integration between Design and Process Planning


Gideon Halevi recommends that the product concepts can be shared with process planners and the relevant issues of production processes related to product concepts can be communicated to product designers. Thus collaboration between the two can extended to zeroth point of product design.

Process planners need to have design knowledge to propose design features that will meet design objectives and at the same time reduce processing cost and lead time.

Industrial Engineering Aspect of Process Planning




To do process industrial engineering, industrial engineers have to begin with existing process plans. They observe the current process to find out the extent to which the operators are following the process plan and the modifications they introduced for good and deviations they are doing to realize production in the face of current difficulties. The observation of current process is recorded in process charts. Analysis of current process plan and the current process chart is the step that reveals opportunities for engineering changes, termed as industrial engineering changes (continuous change in process or even product based on shop floor data and cost data that changes due to changes in material prices and prices of other inputs). Industrial engineers in process industrial engineering area are also process planners only with a distinction that they make incremental changes on a continuous basis.

Manufacturing process is a chain of activities (Manufacturing Value Chain).

Product Requirements Definition
Product Specification
Product Design
Process Planning, 
Resource Planning Equipment Acquisition and Purchase Decisions (as needed), 
Routing
Production Quantity Planning
Inventory Planning & Control (Management)
Purchasing
Shop Floor Control
Costing

Process planning involves decision making and the decisions are to be optimized (benefits are to be maximized and costs are to be minimized).

The process planner is an expert in manufacturing processes and his decisions may optimize at operation level or process level.

There are other levels at which optimization has to be done. The levels are: item, part, product, product mix, and business. Industrial engineers have the responsibility to optimize the total cost of the organization to give maximum profit.



(C) Narayana Rao K.V.S.S. 2020




Production Process Planning Lessons in Industrial Engineering ONLINE Course.

64. Production Process Planning - Foundation for Production

65. Assembly Design - Process Planning & Industrial Engineering Perspective

66. Technical Drawings - Important Guidelines - Process Planning and Industrial Engineering

67. Selection of Metal Removal Processes - Initial Steps - Process Planning and Process Industrial Engineering

68. Fixturing and Clamping the Work Piece - Process Planning and Process Industrial Engineering

69. Determining Operation Type, Feed and Depth of Cuts for Multiple Cuts - Process Planning and Process Industrial Engineering

70. Selecting Cutting Speed - Process Planning and Process Industrial Engineering

71. Selecting a Machine for the Operation - Process Planning and Process Industrial Engineering

72. Selecting Tools for a Machining Operation - Process Planning and Process Industrial Engineering


Updated 6.8.2024,   13.3.2022,  11 Sep 2021,  3 August 2021,  19 July 2021
Pub 18 July 2020


Process Planning Introduction
Fredumacation, 18 Oct 2020
https://www.youtube.com/watch?v=sfF1rojlTI0

Sunday, December 3, 2023

Industrial Engineering Guidelines for Process Designers

Industrial Engineering is Cost Reduction through Productivity Improvement.

Productivity improvement is getting more output from the same resources. Materials, machines and men are considered as the three important resources. Product design, facilities design and process design influence use of resources. The contribution of industrial engineers at design stage of products, facilities and processes can be in the form of guidelines provided to designers.


Process Industrial Engineering FREE ONLINE Course & Notes

https://nraoiekc.blogspot.com/2020/06/process-industrial-engineering-free.html








Tuesday, July 19, 2022

Product and Process Design Principles: Synthesis, Analysis and Evaluation - Book Information

 Product and Process Design Principles: Synthesis, Analysis and Evaluation  4th Edition

Warren D. Seider, Daniel R. Lewin, J. D. Seader, Soemantri Widagdo, Rafiqul Gani, Ka Ming Ng


ISBN: 978-1-119-28263-1 May 2016 784 Pages

https://www.wiley.com/en-us/Product+and+Process+Design+Principles%3A+Synthesis%2C+Analysis+and+Evaluation%2C+4th+Edition-p-9781119282631


TABLE OF CONTENTS

PART ONE INTRODUCTION TO PRODUCT AND PROCESS DESIGN 1


Chapter 1 Introduction to Chemical Product Design 3


1.0 Objectives 3


1.1 Introduction 3


1.2 The Diversity of Chemical Products 3


1.3 Product Design and Development 7


1.4 Summary 16


References 17


Exercises 17


Chapter 2 Introduction to Process Design 19


2.0 Objectives 19


2.1 Introduction 19


2.2 Experiments 21


2.3 Preliminary Process Synthesis 21


2.4 Next Process Design Tasks 40


2.5 Preliminary Flowsheet Mass Balances 41


2.6 Summary 45


References 45


Exercises 45


Chapter 3 Design Literature, Stimulating Innovation, Energy, Environment, Sustainability, Safety, Engineering Ethics 47


3.0 Objectives 47


3.1 Design Literature 47


3.2 Stimulating Invention and Innovation 50


3.3 Energy Sources 51


3.4 Environmental Protection 56


3.5 Sustainability 60


3.6 Safety Considerations 63


3.7 Engineering Ethics 70


3.8 Summary 73


References 73


Exercises 74


3S Supplement to Chapter 3—NSPE Code of Ethics (Online www.wiley.com/college/Seider)


PART TWO DESIGN SYNTHESIS—PRODUCT AND PROCESSES 77


Chapter 4 Molecular and Mixture Design 79


4.0 Objectives 79


4.1 Introduction 79


4.2 Framework for Computer-Aided Molecular-Mixture Design 81


4.3 Case Studies 98


4.4 Summary 107


References 107


Exercises 108


Chapter 5 Design of Chemical Devices, Functional Products, and Formulated Products 110


5.0 Objectives 110


5.1 Introduction 110


5.2 Design of Chemical Devices and Functional Products 112


5.3 Design of Formulated Products 117


5.4 Design of Processes for B2C Products 123


5.5 Summary 126


References 127


Exercises 127


Chapter 6 Heuristics for Process Synthesis 132


6.0 Objectives 132


6.1 Introduction 133


6.2 Raw Materials and Chemical Reactions 133


6.3 Distribution of Chemicals 135


6.4 Separations 141


6.5 Heat Removal From and Addition to Reactors 145


6.6 Heat Exchangers and Furnaces 148


6.7 Pumping, Compression, Pressure Reduction, Vacuum, and Conveying of Solids 150


6.8 Changing the Particle Size of Solids and Size Separation of Particles 153


6.9 Removal of Particles From Gases and Liquids 154


6.10 Considerations that Apply to the Entire Flowsheet 154


6.11 Summary 155


References 159


Exercises 160


Chapter 7 Simulation to Assist in Process Creation 162


7.0 Objectives 162


7.1 Introduction 162


7.2 Principles of Process Simulation 163


7.3 Process Creation through Process Simulation 176


7.4 Case Studies 184


7.5 Principles of Batch Flowsheet Simulation 194


7.6 Summary 201


References 202


Exercises 202


Chapter 8 Synthesis of Networks Containing Reactors 209


8.0 Objectives 209


8.1 Introduction 209


8.2 Reactor Models in the Process Simulators 210


8.3 Reactor Network Design Using the Attainable Region 215


8.4 Reactor Design for Complex Configurations 220


8.5 Locating the Separation Section with Respect to the Reactor Section 224


8.6 Trade-Offs in Processes Involving Recycle 227


8.7 Optimal Reactor Conversion 228


8.8 Recycle to Extinction 229


8.9 Snowball Effects in the Control of Processes Involving Recycle 231


8.10 Summary 231


References 232


Exercises 232


Chapter 9 Synthesis of Separation Trains 234


9.0 Objectives 234


9.1 Introduction 234


9.2 Criteria for Selection of Separation Methods 241


9.3 Selection of Equipment 244


9.4 Sequencing of Ordinary Distillation Columns for the Separation of Nearly Ideal Liquid Mixtures 245


9.5 Sequencing of Operations for the Separation of Nonideal Liquid Mixtures 257


9.6 Separation Systems for Gas Mixtures 277


9.7 Separation Systems for Solid-Fluid Mixtures 279


9.8 Summary 280


References 280


Exercises 282


Chapter 10 Second-Law Analysis 287


10.0 Objectives 287


10.1 Introduction 287


10.2 The System and the Surroundings 289


10.3 Energy Transfer 289


10.4 Thermodynamic Properties 290


10.5 Equations for Second-Law Analysis 295


10.6 Examples of Lost-Work Calculations 297


10.7 Thermodynamic Efficiency 299


10.8 Causes of Lost Work 300


10.9 Three Examples of Second-Law Analysis 300


10.10 Summary 310


References 310


Exercises 310


Chapter 11 Heat and Power Integration 316


11.0 Objectives 316


11.1 Introduction 316


11.2 Minimum Utility Targets 319


11.3 Networks for Maximum Energy Recovery 325


11.4 Minimum Number of Heat Exchangers 329


11.5 Threshold Approach Temperature 334


11.6 Optimum Approach Temperature 336


11.7 Multiple Utilities 337


11.8 Heat-Integrated Reactors and Distillation Trains 342


11.9 Heat Engines and Heat Pumps 348


11.10 Summary 351


Heat Integration Software 351


References 352


Exercises 352


11S-1 Supplements to Chapter 11—MILP and MINLP Applications in HEN Synthesis (Online www.wiley.com/college/Seider)


11S-1.0 Objectives


11S-1.1 MER Targeting Using Linear Programming (LP)


11S-1.2 MER Design Using Mixed-Integer Linear Programming (MINLP)


11S-1.3 Superstructures for Minimization of Annual Costs


11S-1.4 Case Studies


Case Study 11S-1.1 Optimal Heat-Integration for the ABCDE Process


Case Study 11S-1.2 Optimal Heat-Integration for an Ethylene Plant


11S-1.5 Summary


11S-1.6 References


11S-2 Supplement to Chapter 11—Mass Integration (Online www.wiley.com/college/Seider)


11S-2.0 Objectives


11S-2.1 Introduction


11S-2.2 Minimum Mass-Separating Agent


11S-2.3 Mass Exchange Networks for Minimum External Area


11S-2.4 Minimum Number of Mass Exchangers


11S-2.5 Advanced Topics


11S-2.6 Summary


11S-2.7 References


Chapter 12 Heat Exchanger Design 358


12.0 Objectives 358


12.1 Introduction 358


12.2 Equipment for Heat Exchange 363


12.3 Heat-Transfer Coefficients and Pressure Drop 375


12.4 Design of Shell-and-Tube Heat Exchangers 380


12.5 Summary 384


References 384


Exercises 384


Chapter 13 Separation Tower Design 386


13.0 Objectives 386


13.1 Operating Conditions 386


13.2 Fenske-Underwood-Gilliland (FUG) Shortcut Method for Ordinary Distillation 387


13.3 Kremser Shortcut Method for Absorption and Stripping 388


13.4 Rigorous Multicomponent, Multiequilibrium-Stage Methods with a Simulator 389


13.5 Plate Efficiency and HETP 391


13.6 Tower Diameter 392


13.7 Pressure Drop and Weeping 393


13.8 Summary 395


References 395


Exercises 396


Chapter 14 Pumps, Compressors, and Expanders 397


14.0 Objectives 397


14.1 Pumps 397


14.2 Compressors and Expanders 401


14.3 Summary 403


References 404


Exercises 404


Chapter 15 Chemical Reactor Design 405


15.0 Objectives 405


15.1 Introduction 405


15.2 Limiting Approximate Models for Tubular Reactors 405


15.3 The COMSOL CFD Package 407


15.4 CFD for Tubular Reactor Models 410


15.5 Nonisothermal Tubular Reactor Models 418


15.6 Mixing in Stirred-Tank Reactors 423


15.7 Summary 424


References 425


Exercises 425


Chapter 16 Cost Accounting and Capital Cost Estimation 426


16.0 Objectives 426


16.1 Accounting 426


16.2 Cost Indexes and Capital Investment 434


16.3 Capital Investment Costs 438


16.4 Estimation of the Total Capital Investment 444


16.5 Purchase Costs of the Most Widely Used Process Equipment 449


16.6 Purchase Costs of Other Chemical Processing Equipment 470


16.7 Equipment Costing Spreadsheet 486


16.8 Equipment Sizing and Capital Cost Estimation Using Aspen Process Economic Analyzer (APEA) 486


16.9 Summary 493


References 493


Exercises 494


Chapter 17 Annual Costs, Earnings, and Profitability Analysis 498


17.0 Objectives 498


17.1 Introduction 498


17.2 Annual Sales Revenues, Production Costs, and the Cost Sheet 499


17.3 Working Capital and Total Capital Investment 509


17.4 Approximate Profitability Measures 510


17.5 Time Value of Money 513


17.6 Cash Flow and Depreciation 520


17.7 Rigorous Profitability Measures 525


17.8 Profitability Analysis Spreadsheet 529


17.9 Summary 545


References 546


Exercises 546


PART THREE DESIGN ANALYSIS—PRODUCT AND PROCESS 551


Chapter 18 Six-Sigma Design Strategies 553


18.0 Objectives 553


18.1 Introduction 553


18.2 Six-Sigma Methodology in Product Design and Manufacturing 553


18.3 Example Applications 557


18.4 Summary 564


References 564


Exercises 565


18S Supplement to Chapter 18 (Online www.wiley.com/college/Seider)


18S.1 Penicillin Fermenter Model


18S.2 Reactive Extraction and Re-extraction Model


References


Chapter 19 Business Decision Making in Product Development 566


19.0 Objectives 566


19.1 Introduction 566


19.2 Economic Analysis 566


19.3 Make-or-Buy Decisions 570


19.4 Microeconomics of Product Development 572


19.5 Company and Societal Factors Affecting Product Development 573


19.6 Summary 574


References 575


Exercises 575


Chapter 20 Plantwide Controllability Assessment 576


20.0 Objectives 576


20.1 Introduction 576


20.2 Control System Configuration 579


20.3 Qualitative Plantwide Control System Synthesis 584


20.4 Summary 590


References 590


Exercises 591


20S Supplement to Chapter 20 (Online www.wiley.com/college/Seider)


20S.0 Objectives


20S.1 Generation of Linear Models in Standard Forms


20S.2 Quantitative Measures for Controllability and Resiliency


20S.3 Towards Automated Flowsheet C&R Diagnosis


20S.4 Control Loop Definition and Tuning


20S.5 Case Studies


Case Study 20S.1 Exothermic Reactor Design for the Production of Propylene Glycol


Case Study 20S.2 Two Alternative Heat Exchanger Networks


Case Study 20S.3 Interaction of design and Control in the MCB Separation Process


20S.6 MATLAB for C&R Analysis


20S.7 Summary


References


Exercises


Chapter 21 Design Optimization 597


21.0 Objectives 597


21.1 Introduction 597


21.2 General Formulation of the Optimization Problem 598


21.3 Classification of Optimization Problems 599


21.4 Linear Programming (LP) 601


21.5 Nonlinear Programming (NLP) with a Single Variable 603


21.6 Conditions for Nonlinear Programming (NLP) by Gradient Methods with Two or More Decision Variables 605


21.7 Optimization Algorithm 607


21.8 Flowsheet Optimizations—Case Studies 609


21.9 Summary 611


References 612


Exercises 612


Chapter 22 Optimal Design and Scheduling of Batch Processes 616


22.0 Objectives 616


22.1 Introduction 616


22.2 Design of Batch Process Units 617


22.3 Design of Reactor–Separator Processes 620


22.4 Design of Single-product Processing Sequences 622


22.5 Design on Multiproduct Processing Sequences 625


22.6 Summary 626


References 626


Exercises 627


PART FOUR DESIGN REPORTS—PRODUCT AND PROCESS 629


Chapter 23 Written Reports and Oral Presentations 631


23.0 Objectives 631


23.1 Contents of the Written Report 632


23.2 Preparation of the Written Report 636


23.3 Oral Design Presentations 638


23.4 Award Competition 641


23.5 Summary 641


References 641


PART FIVE CASE STUDIES—PRODUCT AND PROCESS DESIGNS 643


Chapter 24 Case Study 1—Home Hemodialysis Devices 645


24.0 Objectives 645


24.1 Hemodialysis Technology 645


24.2 Design Specifications of Home Hemodialysis Device 652


24.3 Summary 655


References 655


Bibliography Patents—Hemodialysis Devices—General 655


Patents—Hemodialysis Devices—Hollow-Fiber Membranes 656


Patents—Hemodialysis Devices—Dialysate Regeneration 656


Patents—Hemodialysis Devices—Alarms/User Interface 656


Exercises 656


Chapter 25 Case Study 2—High Throughput Screening Devices for Kinase Inhibitors 657


25.0 Objectives 657


25.1 Background Technology For High Throughput Screening of Kinase Inhibitors 657


25.2 Product Concept 665


25.3 Prototyping 669


25.4 Product Development 672


25.5 Summary 672


References 672


Patents 673


Exercises 673


Chapter 26 Case Study 3—Die Attach Adhesive: A Case Study of Product Development 674


26.0 Objectives 674


26.1 Background of Technology 674


26.2 Market Study 674


26.3 Product Design 677


26.4 Process Design 678


26.5 Prototyping 678


26.6 Estimation of Product Cost 679


26.7 Summary 680


References 680


Exercises 681


Chapter 27 Case Study 4—Ammonia Process 683


27.0 Objectives 683


27.1 Introduction 683


27.2 Initial Base Case Design 686


27.3 Design Refinement 692


Postscript 699


References 703


Exercises 703


APPENDICES


I. Residue Curves for Heterogeneous Systems 704


II. Design Problem Statements by Area 705


III. Materials of Construction 709


INDICES


Table of Acronyms 711


Author Index 719


Subject Index 725


NEW TO THIS EDITION

Approximately 100 video clips created by the authors within the enhanced eBook, each accompanied by quiz questions with answer-specific feedback

Expanded and new coverage of chemical product design, design optimization, engineering ethics, molecular and mixture design, mass integration, Six-Sigma design strategies, and more

Original and updated real-world case studies and supplemental resource material

Modern computer-based methods for process synthesis

Extensions and case studies that enhance the coverage of product design, especially of mixture blends, formulated products, and product devices

Updated and expanded resources available on the book companion site: program and simulation files that solve 60 example problems; a solution manual for homework exercises; 93 design problem statements, and multimedia courseware that uses voice, video, and animation to introduce new users of the steady-state simulators to the specifics of two of the most widely used process simulation programs, ASPEN PLUS and HYSYS (UniSim Design)


https://www.wiley.com/en-us/Product+and+Process+Design+Principles%3A+Synthesis%2C+Analysis+and+Evaluation%2C+4th+Edition-p-9781119282631#content-section

Tuesday, February 15, 2022

About CNC Machine Processes

 


https://the-cnc.blogspot.com/p/home.html

https://the-cnc.blogspot.com/p/my-mach3-settings.html


About Mach3

https://jtechphotonics.com/?page_id=1436


https://the-cnc.blogspot.com/p/blog-page_2.html


Associated YouTube Videos

https://www.youtube.com/channel/UCtB4_G_yqh3PrSzv3Ak-PrA?view_as=subscriber

Monday, February 14, 2022

Crankshaft Turning - Machining - Grinding



_____________

Great way to crankshaft machining with CNC machine. 

Excellent CNC factory machine performance
Channel: CAD/CAM SOLUTION, 60.4K subscribers
2020


https://www.youtube.com/watch?v=OthJkUfW54c
_____________

2021

Video: 6 cylinder crankshaft factory | Manual Machining 6 Cylinders engine Crankshaft |
30 Sept 2021

-------------------------

Video: Production of Crankshafts in Factory Complete Process || Manual Machining 3 Cylinder Engine Crankshaft
21 Sep 2021

Suggestions on the above process - I posted in Linkedin, and FaceBook

On Linkedin

Michel Baudin
Takt Times Group

It's wonderful of you to post this example. It's clearly a target-rich environment and great to use in classes.

It's wonderful of you to post this example. It's clearly a target-rich environment and great to use in classes.

More context would be helpful. From the video, we can infer quite a bit but it may not be correct. In particular, we don't know the company's pain points. Is it struggling with productivity, quality, delivery? Does it have many injuries? How is the employee turnover? Are they able to retain employees?

In terms of process technology, work methods, layout, flow, safety, etc., this shop looks 50 to 100 years behind the times. It also does not look like a company that can invest in state-of-the-art CNC lathes or would know how to use them.

On the other hand, they most likely could afford safety glasses, go/no-go gauges, posted work instructions, chucking that doesn't require manually tightening bolts, and powered positioning to replace cranks... And they could have a one-piece flow cell at least through the lathes and drill press.

Also, the video looks to be in fast motion. It's good to visualize the entire process but not for time studies.

The key question after that is where to start improving.

Comments On the video

yarrdayarrdayarrda
Seemingly primitive fixtures to drill the oil passages, and yet he hit the middle of the main journal, nice!

Jeff Yates

Saw the castings were Perkins, the way we do them in the States at Caterpillar and how they do it there shows how far we’ve come.  I am surprised Caterpillar has their subsidiary still do like Henry Ford did it in the 20’s


---------------------


Crank Shaft Design Issues

http://www.epi-eng.com/piston_engine_technology/crankshaft_design_issues.htm


Operations in Crank Shaft Machining

Machining           Description of machining                   CTQ characteristic pertaining
Operation no.      operation                                             to the machining operation


10                       Facing and centering     Center to center distance
                                         Diameter and chamfer angle of
                                         locating hole
20                        Milling of crankshaft web Flatness of web
30                        CNC Rough turning of journals Diameter of journal

40                        Whirling of pins    Phase-out of pins
                                    Throw of pins
                                    Pin diameter after whirling
                                    Journal diameter after whirling
50                        Finish turning of journals       Journal diameter after finish
turning
60                       Gun drilling of oil hole                Diameter of oil hole
70                       Finish turning of flange end   Diameter of flange
                                              Circularity of flange
80                      Drilling and tapping of bolt    Pitch circle diameter of bolt holes
                          holes over the PCD                Thread pitch of bolt holes
                                           
                                           
90                      Stub end boring and                Stub-end-hole diameter
                          chamfering using a                  Chamfer angle
                           combination boring-cum
                          chamfering  inserts tool bar
                                             
                                             
100                    Grinding of journals                       Finish diameter of journals
                                                                          Circularity of journals
110                     Grinding of pins              Finish diameter of pins
                                                                   Circularity of pins
120                    Detection of magnetic cracks         Check for internal cracks
130                    Sursulfing                           Hardeness of journals and pins
                                          after sursulfing operation
140                    Pins and journals lapping    Surface roughness of journals
                                           and pins after lapping
150                    Final inspection quality  check


2012
____________ ____________


WFL M60 MillTurn Complete Crankshaft Machining - MARTECH Machinery, NJ - USA
26 Jul 2012
https://www.youtube.com/watch?v=81UjjSH2iFw
____________

____________


04 July 2011 / Categories: Archive, crankshafts
Modern crankshaft machining methods
https://www.highpowermedia.com/Archive/category/crankshafts/modern-crankshaft-machining-methods


Crank Shaft Grinder
12 May 2016
https://www.youtube.com/watch?v=zZyvxUERx8w

Amc Schou K-1200 CNC Crankshaft Grinder
30 Jan 2018
https://www.youtube.com/watch?v=esOa9DqcgJk

Details of the machine from manufacturer
http://amc-schou.dk/baixu/product/358.html

More videos

http://www.youtube.com/watch?v=7ngNipoENTs&feature=related

http://www.youtube.com/watch?v=taMV8CcszbE



How to Machining Crankshaft on Lathe (tips from MAXNOVO Machine)
Published on February 25, 2021


Thesis chapter on grinding
http://shodhganga.inflibnet.ac.in/jspui/bitstream/10603/194947/11/11_chapter%205.pdf



Rough- and finish-grinding of a crankshaft in one set-up
Abstract
Method of grinding a concentrically clamped crankshaft, a crankshaft grinding machine for carrying out the method, and a crankshaft of high-alloy steel or cast material. The method provides for pin journals and main journals of the crankshaft to be ground in one set-up such that first, at least the main journals are rough-ground and then the pin journals are finish-ground and after that the main journals are finish-ground. The crankshaft grinding machine forms a machining center by means of which corresponding rough-grinding and finish-grinding is possible in a single set-up.

B24B5/42 Single-purpose machines or devices for grinding crankshafts or crankpins

Application US09/980,764 events: 1999-04-30
Application filed by Erwin Junker Maschinenfabrik GmbH: 2000-04-20
Assigned to ERWIN JUNKER MASCHINENFABRIK GMBH: 2004-02-20
Application granted: 2005-04-12
Publication of US6878043B1: 2020-02-29
Application status is Active: 2020-04-20

https://patents.google.com/patent/US6878043B1/en

Junker Products for Crankshaft Grinding

https://www.junker-group.com/junker-group/erwin-junker-maschinenfabrik-gmbh/crankshaft-grinding/

https://www.junker-group.com/grinding-machines/products/jucrank/

The JUNKER Group drives forward with digitalization

Process-optimized production with the digital twin

09/06/2019
Combining real and virtual machines results in an intelligent system able to predict characteristics and operating behavior from the production planning stage and throughout the product lifecycle. The digital twin for JUNKER grinding machines is a virtual representation of the real system, enabling comprehensive digital exchange between the virtual and real world.
https://www.junker-group.com/news/detail/news/process-optimized-production-with-the-digital-twin/


Reference machines for worldwide production
The Renault Group opts for JUNKER machines for hybrid project
07/29/2019
Prototype production takes place at the French main plant Cléon, where Renault have opted for the ZEMA NUMERIKA G 1500 Plus and the JUCRANK 6S 10-10. These two machines supply reference data for series production worldwide. The results then form the basis for global production at the Renault Group’s other sites. This means that the JUNKER reference machines set the standard for efficient production throughout the entire Group. The ZEMA NUMERIKA cylindrical grinding machine grinds flanges and journals for crankshafts in a single clamping set-up using corundum grinding wheels, while the JUCRANK non-cylindrical grinding machine machines the main and pin bearing in a single work step using CBN grinding wheels.
https://www.junker-group.com/news/detail/news/the-renault-group-opts-for-junker-machines-for-hybrid-project/


Hyundai Compact Line Center for Crankshaft Machining WH40RS
Video in the page demonstrates the working of the machine.
(See the video WFL M60 MillTurn Complete Crankshaft Machining - MARTECH Machinery, NJ - USA, 26 Jul 2012   https://www.youtube.com/watch?v=81UjjSH2iFw  also)

https://machine.hyundai-wia.com/eude/fa/product_detail.asp?PRODUCT_SEQ=33329&PRODUCT_CODE=D01008


Virtual machining in engine crankshaft machining

Lili Zhao, Lulu Yuan and Meng Wang
Published under licence by IOP Publishing Ltd
Journal of Physics: Conference Series, Volume 1176, Issue 5
https://iopscience.iop.org/article/10.1088/1742-6596/1176/5/052077/meta


Machines for Crankshaft Machining



Special -Purpose Machine for Crankshaft both end MBE
Special-Purpose Machine for Crankshaft Oil Holes MOH
Fixture for Crankshaft Oil Holes Machining CRANKMASTER Series
https://www.horkos.co.jp/english/products/mc/spm.php

2008 Developed the CNC crankshaft rough milling machine
2009 Developed the Crankshaft pin turner
HNK Machine Tools, Korea


Updated on 14.2.2022,  25 Sep 2021,  29 Feb 2020, 3 February 2020.