Trunnion Table Custom Workholding Fixtures
A trunnion table fixture transforms your 3-axis vertical machining center (VMC) into a more efficient multi-axis solution. By adding a 4th-axis rotary trunnion, you can machine multiple sides of a part in one setup. Our custom trunnion table fixtures are designed to boost your VMC’s productivity by reducing the number of times you need to stop and reposition a workpiece. The result is fewer setups, higher accuracy, and a significant reduction in overall machining time for complex or multi-sided parts.
Why Use a 4th-Axis Trunnion Fixture:
- Multi-Side Machining: Access several faces of your workpiece in a single clamping. For example, you can machine the top, front, and side of a part by simply indexing the trunnion – eliminating the need for separate setups for each face.
- Fewer Setups, Greater Accuracy: With all critical features machined in one fixture, you avoid the alignment errors that come from moving a part between multiple fixtures or vises. This ensures tight tolerances are maintained across all sides.
- Higher Throughput: Keeping the part mounted through multiple operations means more cutting and less idle time. Your VMC’s spindle spends more time making chips and less time waiting on re-fixturing, which boosts throughput.
- Rugged, Balanced Design: Our trunnion fixtures are engineered for stability and repeatability. We consider weight distribution and rigidity so your 4th-axis rotary table isn’t overtaxed, and the fixture remains rock-solid during machining.
custom fixture design process
Every trunnion table fixture we build is custom-tailored to your machine and part geometry. Whether you need a simple two-sided angle plate or a complex tombstone-style fixture holding multiple parts, we will design a solution that optimizes your machining workflow. Our team works closely with you to ensure the fixture integrates with your rotary table and provides the clearance, access, and strength required for successful multi-axis machining.
Step 1
Before build, we review the 3D design with you to ensure it meets your requirements.
Step 2
Then our team conducts thorough testing – including pressure/leak checks and CMM verification of critical dimensions – so you can be confident the fixture will perform reliably on your shop floor.
Step 3
The result is a turnkey hydraulic or pneumatic fixture built around your part and process, ready to elevate production efficiency from day one.