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Clamps & Workholding
E-Handbook

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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.

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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

Clamp Workholding in Circle

Clamps & Workholding

Check out our complete line of clamps, toggle clamps, & workholding devices in a variety of sizes, materials, and configurations to suit your product or application.

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