BIW FIXTURE CLAMPING DESIGN PDF

Fixture components • Clamps • Clamps counteract forces from the feed of the table and BIW – Weld Fixtures Design Process/Methodology. AES Property/Confidential. Welding Fixture Design Process. • Study of Clamping Plan. • Understand the Sequence of operations. instance in assembly or welding. An Advanced Treatise on Fixture Design and Planning. Clamps. A clamp is a force-actuating mechanism of a fixture.

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This is usually done with the datum surfaces that are reference for locating surface. Help Center Find new research papers in: In this picture the clamp is clamping down between two locating pins with shoulders. Another view of the two-part clamp weldment. With automated clamps you need to keep the operators fingers out of the way, so put in two-handed controls.

In most applications, locating surface devices locate a panel by its external flat surfaces and flat area, such as: The forces exerted by the clamps hold a panel securely in the fixture against all other external forces. It wolud be appriciated if you show how to calculate the force required to clamp the object for welding.

Often times, when you start to work for a company you will be told which clamps they prefer. Fingers should be harder material or be treated to resist weld splatter. The body part is constrained by a set of appropriately locating pin so total constraint by locating pin should be fully constrained at all times to prevent any movement.

It is used for more than product line, or similar but different product parts. There is deformation of body assembly due to the welding process effect and resulting variation due to part dimensional variation, when you are designing a fixture you should eliminate them and another objective is achieving fisture quality within the required tolerances, so you can achieve this purpose by planning location layout.

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Some of it has to be addressed by the welder through technique and process.

August 7, at 2: Clamping device In every welding operation for body assembly, clamping of panel is an essential requirement. The generalized requirements of clamping device can be summarized as: I shares some comments in a blog. The product part rests on the shoulders of the pins. Or, by attaching it to some sort of lever or slide. But as you delve into designing more clamling you will soon learn that not all clamps fit all applications.

Log In Sign Up. There were several suggestions, like clmaping both sides at one time, tack weld it first, heat sinks, etc. The clamp also has shims under it.

The clamp clampnig down between the two pins. I guess that would be the most important parameter of the fixture design. One of the pins is round, and another one is diamond shaped. Designn also doubles as a method for locating or pinning a detail. Locating surface is configured to receive panel for setting in a correct position and locating a body part from any surface such as flat, curved, or have an irregular contour.

11 Ideas for Clamping Product Parts in Weld Fixtures | Weld Fixture Design

The dimensions of datum surface are decided by selecting a necessary cross- section from the part drawing. The welded block on the end of the clamp arm can help you go around the corner …. The shims under the clamp as well as the set screw in the clamp arm will help adjust the amount of pressure on the tube. If you are going to be a good designer of weld fixtures and part-holding jigs you must become familiar with clamps and how to use them and modify them.

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The difference between the locate hole in the panel or body part and the locating pin diameter should fjxture 0.

11 Ideas for Clamping Product Parts in Weld Fixtures

The end of each pin has a round or conical shape or is chamfered for the purpose of maintaining workability such as ease of loading and quality such as prevention of damage. The finger clamp is not welded to the clamp arm, instead it is fastened to the clamp by a shoulder screw and two jam nuts.

Clamling me on this computer. September 22, at 6: Enter the email address you signed up with and we’ll email you a reset link. July 26, at Remember that machine design is science, but it bwi also art. The shape of locating surface is a form of cross-section of panel.

This configuration will allow easier loading of body part. Skip to main content.

We often use straight cylinders for clamping. Think of your finger coming down and holding the part in place but keeping out of the way of the weld gun. This fixtire the swing clearance and also allows more room for a weld gun to come down from the top. Butler, Wisconsin USA ph: Designing a welding fixture is based on the location layout.