Clamps & Workholding
E-Handbook
In This E-Handbook
The Clamps & Workholding E-Handbook helps you choose the correct clamp, toggle clamp or workholding device based on:
Various Design Considerations, Machining Forces, Workholding Forces, Environment Considerations,
Human Factors, Styles, Attributes, AND MORE.
What's Inside?
Full Table of Contents
> Terminology
> Clamping and Workholding Basics
> Physics Revisited
> Torque
> Vectors
Figure 1: Force Vector Analysis
> The Art of Fixturing and Design
> Jig vs. Fixture
> Locating
> Degrees of Freedom
Table 1: Cartesian Coordinate System1 Degrees of Freedom
> Machining Forces
Eq1: Convert SFM to RPM
Eq2: Determine material removal rate (MRR)
Eq3: Calculate Spindle Horsepower
Eq4: Calculate force transmitted from the tool to the workpiece
Eq5: Calculate the Required Clamping Force
> Clamp vs. Fastener
Table 2: Clamp vs. Fastener for Workpiece Hold-Down Applications
> Workholding Forces
> Maximum Holding Capacity (FHC)
> Clamping Force (FC)
> Exerting Force (FE)
> Holding Force (FH)
Clamps
> Single-Ended Clamp
Figure 2: Clamping Force (FC) vs. Exerting Force (FE)
Figure 3: Workholding Example - Single ended Clamp
Figure 4: Sample Holding Force Calculation for Hold-Down Type Toggle Clamp
> The Toggle Clamp
Figure 5: Toggle Clamp Operation
> Design Considerations
> Workholding Applications
> Assembly
> Machining
> Test
> Physical Attributes
> Applied Forces
> Space Allotted
> Material
> Clamp Position
Figure 6: Sample Clamp Positions
> Remote Operation
> Cycle Time
> Maintenance
> Human Factors
> Angle of Approach
> Applied Forces
> Grip
> Feedback
Figure 7: Example Power Clamp with Feedback
> Safety
> Selecting the Correct Component
> Selection Parameters
> Workpiece
> Required Holding Force (FH)
> Workholding Type
Table 3: Types of Workholding Devices
> Cost
> Clamp Specifications
> Clamping Force for Strap Clamp
Figure 8: Sample Strap Clamp Application
Table 4: Threaded Stud Clamping Forces
> Maximum Holding Capacity
> Size
> Modifications
> Power Workholding Devices
Table 5: Single-Action vs. Double-Action Pneumatic and Hydraulic Cylinders
Workholding Devices
Table 6: Workholding Devices
Table 7: Workholding Attributes
Toggle Clamps
Table 8: Toggle Clamp Pros & Cons
Table 9: Toggle Clamp Styles
Table 10: Toggle Clamp Attributes
> Toggle Clamp Attributes
Power Workholding
Table 11: Power Workholding Pros and Cons
> Pneumatic Clamps
Table 12: Power Workholding Devices
> Pneumatic and Hydraulic Clamps
Table 13: Power Workholding Devices
> Pneumatic/Hydraulic Clamp Attributes
Table 14: Power Workholding Attributes
> Custom Products
> Summary
> Glossary
> References
> Notes
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