HOW TO USE SHIMPACK IN X-Y-Z | FIXTURE DESIGN | SPM DESIGN | AUTOMATION FIXTURE DESIGN

Shim packs are used in fixture design to adjust the position and orientation of workpieces or components within the fixture. Here’s how you can use shim packs in fixture design in X, Y, Z directions:
Understanding Shim Packs
Shim packs consist of thin, flat layers or foils of various thicknesses. These shims are inserted between the fixture elements and the workpiece or component to achieve precise positioning or alignment adjustments.
Steps to Use Shim Packs:
Identify Adjustment Requirements:
Determine where adjustments are needed in your fixture setup. This could be to align a workpiece to a specific reference point or to ensure proper clearance or orientation.
Select the Correct Shim Thickness:
Measure the gap or offset that needs to be corrected in the X, Y, or Z directions.
Choose shims of appropriate thicknesses to fill these gaps. Shims typically come in standardized thicknesses (e.g., 0.05 mm, 0.1 mm, 0.2 mm, etc.).
Insert Shims:
Place the selected shim packs strategically between the fixture and the workpiece.
Ensure that the shims are inserted uniformly across the contact area to maintain stability and avoid uneven loading.
Check Alignment:
After inserting the shims, verify the alignment or positioning of the workpiece/component.
Use precision measuring tools such as calipers or micrometers to confirm that the adjustments meet the desired specifications.
Secure the Fixture:
Once the correct alignment is achieved, secure the fixture elements (such as clamps or bolts) to maintain the position of the workpiece.
Verify Stability and Functionality:
Conduct functional tests or simulations to ensure that the fixture securely holds the workpiece/component in the desired position.
Verify that there are no unintended movements or shifts during operation.
Tips:
Accuracy: Use shims of appropriate thickness to achieve the required precision in alignment.
Uniformity: Distribute shims evenly across the contact area to avoid localized stress concentrations.
Material Selection: Choose shims made from materials compatible with your application to ensure durability and reliability.
Example Scenario:
Imagine you have a fixture where a machined component needs to be positioned precisely 2 mm higher in the Z direction. You would select shim packs totaling 2 mm in thickness and insert them between the fixture base and the component. After insertion, measure and verify the component's height to ensure it meets the design specifications.
By following these steps, you can effectively use shim packs in fixture design to adjust positioning in X, Y, and Z directions, ensuring precise alignment and functionality of your fixtures.
#fixtures #automation #design #MECHANICALROCKS #robotics #roboticautomation