Workholding for CNC Machines - Recent Developments

Total Guide to CNC Jigs, Fixtures, and Workholding Solutions for Mills
https://www.cnccookbook.com/cnc-jigs-fixtures-workholding-solutions-milling/

Adaptix Soft Jaw 

9/12/2022  12 September

The highlight of this product is it can be dropped onto different vises, such as Schunk, Kurt, etcetera.

The product offer benefits such as instant setup, elimination of storage, interchangeable pin tips, vise compatibility, durability and field repairability.  Adaptix is said to solve several machining problems by being able to grip nearly any part with repeatability and noted clamping force. When designing this product, Norgren wanted to bring reduced setup and changeover times, costs and time spent designing, creating and storing vises and soft jaws.

https://www.mmsonline.com/articles/new-division-new-product-an-interview-with-norgren-workholding

https://www.mmsonline.com/suppliers/norgren-workholding

https://www.norgrenworkholding.com/en

19/5/2020 

Turning to an Adhesive for Lathe Workholding

Adhesive cured by ultraviolet light is an option for securing parts for machining that could otherwise distort when traditional, mechanical clamping techniques are used.

Derek Korn, Editor-in-Chief, Production Machining magazine

https://www.productionmachining.com/blog/post/turning-to-an-adhesive-for-lathe-workholding-

11/20/2019

WORKHOLDING

Temperature-Activated Adhesive Overcomes Limits of Magnetic and Vacuum Workholding

This new chemistry-based solution for five-sided machining allows for a diversity of metals and other workpiece materials to be used along with aggressive cutting forces.

Peter Zelinski, Editor-in-Chief, Modern Machine Shop

https://www.mmsonline.com/blog/post/temperature-activated-adhesive-overcomes-limits-of-magnetic-and-vacuum-workholding

MAXIMIZE YOUR 5-AXIS CNC OPERATION WITH QUICK-CHANGE WORKHOLDING

Oct 22, 2019

https://www.mscdirect.com/betterMRO/metalworking/maximize-your-5-axis-cnc-operation-quick-change-workholding

5-Axis machine fixtures through 3D Printing

One of the biggest hurdles to spindle optimisation - the key performance indicator for any CNC machine shop - is workholding setup and changeover. Workholding fixtures, manufactured in metal,  take up to two weeks to make and delay the orders. By using Generative Design from Autodesk Fusion 360, and the speed of an HP4200 Multi Jet Fusion 3D printing machine, a bespoke workholding for a five-axis CNC machining demonstration on a Matsuura MX-850 was done.

https://www.tctmagazine.com/additive-manufacturing-3d-printing-news/taking-the-work-out-of-workholding-3d-printing-generative-design/

Workholding Solutions to Reduce Costs, Increase Throughput
April 24, 2018
At the Nirvana Machine Shop on planet Perfection, every workpiece is clamped to a custom-built fixture mounted on a dedicated machine tool. Components are produced in large batches. All the fixtures are totally automatic—instantly positioning, clamping, machining, inspecting, and releasing the part with the ultimate precision.  But what about small batch quantity production?

Manufacturing Engineering contacted several suppliers of workholding technology to learn what solutions they offer for reducing setup time and increasing productivity.
https://www.sme.org/technologies/articles/2018/april/workholding-solutions-to-reduce-costs-increase-throughput/

11/1/2018
The Fixture Niche: Principles For Effective Fixture Design
Oddly shaped parts that require custom fixtures are a particular specialty for this CNC machine shop. Here are a few principles it follows for effective fixture design.
https://www.mmsonline.com/blog/post/the-fixture-niche


3/1/2014
New Workholding Method Drives Production Efficiency
By replacing a three-jaw chuck and dead-center workholding model with a flange-mounted, mechanically compensating face driver from Riten Industries, Tuthill Corp. cut machining cycle time by about 39 percent.
https://www.mmsonline.com/articles/new-workholding-method-drives-production-efficiency



Workholding for CNC efficiency.
Tooling & Production > January 1, 1995
https://www.thefreelibrary.com/Workholding+for+CNC+efficiency.-a016482701


Research Papers



International Journal of Scientific & Engineering Research Volume 4, Issue 2, February-2013 1
ISSN 2229-5518
IJSER © 2013
http://www.ijser.org
Design & Development of Fixture for CNC –
Reviews, Practices & Future Directions
N. P. Maniar, D. P. Vakharia
N. P. Maniar is Research Scholar in Mechanical engineering in
Dharmsinh DesaiUniversity, Nadiad, India.
 D. P. Vakaharia is currently working as Professor in Mechanical Engi neering Sardar Vallabhbhai National Institute of Technology, Surat, India..
https://www.ijser.org/researchpaper/Design-Development-of-Fixture-for-CNC-Reviews-Practices-Future-Directions.pdf

Active fixturing: literature review and future research directions
O.J. Bakker*, T.N. Papastathis, A.A. Popov and S.M. Ratchev
Manufacturing Research Division, Faculty of Engineering, University of Nottingham, University Park,
Nottingham NG7 2RD, UK
International Journal of Production Research, 2013
Vol. 51, No. 11, 3171–3190,
https://www.tandfonline.com/doi/full/10.1080/00207543.2012.695893






2019
Machining fixture for adaptive CNC machining process of near-net-shaped jet engine blade
Chinese Journal of Aeronautics
Available online 10 July 2019 - Full article available
https://www.sciencedirect.com/science/article/pii/S1000936119302523

Some references from the above paper


Z. Zhang, D. Zhang, M. Luo, B. Wu
Research of machining vibration restraint method for compressor blade
Procedia CIRP, 56 (2016), pp. 133-136

Y. Wang, X. Chen, N. Gindy
Surface error decomposition for fixture development
Int J Adv Manuf Technol, 31 (9) (2007), pp. 948-956

Y.J. Liao, S.J. Hu
Flexible multibody dynamics based fixture-workpiece analysis model for fixturing stability
Int J Mach Tools Manuf, 40 (2000), pp. 343-362

V. Djordje, Z. Uros, H. Janko
Complex system for fixture selection, modification, and design
Int J Adv Manuf Technol, 45 (7) (2009), pp. 731-748

K. Kulankara, N. Shreyes Melkote K.
Machining fixture layout optimization using the genetic algorithm
Int J Mach Tools Manuf, 40 (4) (2000), pp. 579-598

D. Haiyan, Shreyes N. Melkote
Determination of minimum Clamping force for dynamically stable fixturing
Int J Mach Tools Manuf, 46 (7–8) (2006), pp. 847-885


Patents

TWO- WAY CNC HORIZONTAL MACHINING CENTER
Abstract This invention relates to a two way CNC Horizontal Machining center used for machining the component in different setups. The two way CNC Horizontal Machining Center with trunnion mounted hydraulic fixture is the unique solution for engine blocks machining in a single set up.

Patent Number 229014
Indian Patent Application Number 1292/CHE/2004
PG Journal Number 12/2009
Publication Date 20-Mar-2009
Grant Date 13-Feb-2009
Date of Filing 01-Dec-2004
Name of Patentee BHARAT FRITZ WERNER LIMITED
http://www.allindianpatents.com/patents/229014-two-way-cnc-horizontal-machining-center


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.
https://books.google.co.in/books?id=_Y-eBQAAQBAJ


Advanced Fixture Design for FMS
A.Y.C. Nee, K. Whybrew, A. Senthil kumar
Springer Science & Business Media, 06-Dec-2012 - Technology & Engineering - 204 pages

Fixtures are crucial to new manufacturing techniques and largely dictate the level of flexibility a manufacturing system can achieve. Advanced Fixture Design for FMS provides a systematic basis for the selection and design of fixturing systems. It gives a review of the current state of the art of flexible and reconfigurable fixturing systems. Recent developments in design methodology using CAD are analysed in depth. Fixture design is seen as an inseparable part of process planning. The primary objective of a fixture system is to ensure that the part being manufactured can be made consistently within the tolerance specified in the design. A new method of tolerance analysis is used to check the suitability of location surfaces and the sequence of operations and is explained in detail.
https://books.google.co.in/books?id=4OrSBwAAQBAJ


Computer-Aided Fixture Design: Manufacturing Engineering and Materials Processing Series/55
Yiming (Kevin) Rong
CRC Press, 20-Apr-1999 - Technology & Engineering - 496 pages
Illustrates recently developed fixture design and verification technology, focusing on their central role in manufacturing processes. The text uses up-to-date computer technology to minimize costs, increase productivity and assure product quality. It presents advanced data and analysis that is directly applicable to development of comprehensive computer-aided modular fixture design system.
https://books.google.co.in/books?id=MOJJFEI8B4MC


Search Google for Workholding for CNC

Good papers and patents for google search -  cnc milling fixture patent


Updated on 15 September 2020, 19 August 2020,  1 January 2020
18 December 2019