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Productivity Analysis - Comparison of Current Process to Ideal or the Best Process has to be done from System level up to Element level.
Lesson 86 of Industrial Engineering ONLINE Course
Part of Main Topic: Analysis of Items in Operation Information Sheet
Questions for Analysis Suggested by Maynard (1939)
1.What is the best way to hold the work piece in the best method?
2. What is the clamping force and rigidity required for the operation?
3. Can the work be held in the machine by other means to better advantage?
4. Should a vise be used?
5. Should a jig be used?
6. Should clamps be used?
7. Is the jig design good from a motion-economy standpoint?
8. Can the part be inserted and removed quickly from the jig?
9. Would quick-acting cam-actuated tightening mechanisms be desirable on vise, jig, or clamps?
10. Can ejectors for automatically removing part when vise or jig is opened be installed?
11. Is chuck of best type for the purpose?
12. Would special jaws be better?
13. Should a multiple fixture be provided?
14. Should duplicate holding means be provided so that one may be loaded while machine is making a cut on a part held in the other?
Additional Questions and Information
What is the present method of clamping the work piece?
How much time is taken for setting it up?
How much time is taken for loading the work piece?
How much time is taken for unloading the work piece?
What is the price or cost of the clamping device?
What is the maintenance cost of the clamping device?
What are the alternatives?
In the current days, CNC machines are the important machine tools in machine shops. The questions have to be related to workholding fixtures used on CNC machines like palettes. Information on recent developments in the fixtures area and productivity improvement due to them is to be collected and maintained in IE departments to guide analysis of clamping procedure.
2. What is the clamping force and rigidity required for the operation?
3. Can the work be held in the machine by other means to better advantage?
4. Should a vise be used?
5. Should a jig be used?
6. Should clamps be used?
7. Is the jig design good from a motion-economy standpoint?
8. Can the part be inserted and removed quickly from the jig?
9. Would quick-acting cam-actuated tightening mechanisms be desirable on vise, jig, or clamps?
10. Can ejectors for automatically removing part when vise or jig is opened be installed?
11. Is chuck of best type for the purpose?
12. Would special jaws be better?
13. Should a multiple fixture be provided?
14. Should duplicate holding means be provided so that one may be loaded while machine is making a cut on a part held in the other?
Additional Questions and Information
What is the present method of clamping the work piece?
How much time is taken for setting it up?
How much time is taken for loading the work piece?
How much time is taken for unloading the work piece?
What is the price or cost of the clamping device?
What is the maintenance cost of the clamping device?
What are the alternatives?
In the current days, CNC machines are the important machine tools in machine shops. The questions have to be related to workholding fixtures used on CNC machines like palettes. Information on recent developments in the fixtures area and productivity improvement due to them is to be collected and maintained in IE departments to guide analysis of clamping procedure.
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/suppliers/norgren-workholding
March 31, 2020
Can Your Pallet Pool Do This? Six Differences Between a Pallet Pool and Flexible Automation
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-
Milling setup tricks
Brandt Taylor, January 21, 2020
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/
News - Information
8 August 2020
Jaw modules
Always the right solutionJaw clamping in the HAINBUCH chuck or stationary chuck
Extremely fast conversion from O.D. to I.D. without detachment of the base clamping device [2 min.]
Self-centering on the basic clamping device
Enlarged clamping range of the basic clamping device
Deadlength clamping without pull-back effect
Optimal lubrication and resistant to contamination thanks to the lubricating system
https://www.hainbuch.com/en/products/adaptation-clamping-devices/jaw-modules/2-jaw-module/
Updated on 27.8.2023, 8.10.2022, 29.9.2022, 15 September 2020
8 August 2020
Thanks For Sharing your Blog, it is very helpful and informative. we provide Special Workholding at affordable prices. for more info visit our website.
ReplyDeletehttps://usshoptools.blogspot.com/2020/11/tongue-and-groove-chuck-jaws-in-usa.html?showComment=1644404368797#c1680338790866336592
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