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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A clamp can be defined as a device for providing an invariant location with respect to an external loading deeign. Fixture unit to hold the body parts securely and composed of following item: Click here to sign up. The welded block on the end of the clamp arm can help you go around the corner …. This also doubles as a method for locating or pinning a detail.

It involves numbers of fixture units and due to the complexity and shape of the component geometry, the choice of elements as well as configuration of each unit tends to change from case to case. Notice the rest pads have yellow shim packs under them.

In this picture the clamp is clamping down between two locating pins with shoulders. August 7, at 2: July 27, at 2: It also allows you to shorten or lengthen the swing arm. 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. Fingers should be harder material or be treated to resist weld splatter.

One of the pins desin round, and another one is diamond shaped. Some weld distortions can not be addressed with fixturing. 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. September 22, at 6: In other words a clamp is a force-actuating mechanism of a fixture unit. There desigb several suggestions, like weld both sides at one time, tack weld it first, heat sinks, etc.

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Think of your finger coming down and holding the part in place but keeping out of the way of the weld gun.

Another view of the two-part clamp weldment.

BIW Fixture Design: How Clamp unit is designed?

Here holding the yellow product part. Some of it has to be addressed by the welder through technique and process. I am not an expert on welding. Butler, Wisconsin USA ph: The clamp also has shims under it. Skip to main content.

11 Ideas for Clamping Product Parts in Weld Fixtures

Or, clxmping attaching it to some fixtue of lever or slide. July 26, at The surface of base should be flat smooth and the base should be rigid enough for easy welding and machining. Location layout is the selection of the positions vixture numbers of locators and clamps for assembly of fixture components into a final configuration on a fixture base.

We often use straight cylinders for clamping. Help Center Find new research papers in: Usually two locating pins are enough to properly locate the body part on one plane. Clamping device In every welding operation for body assembly, clamping of panel is an essential requirement.

The clwmping clamp is not welded to the clamp arm, instead it is fastened to the clamp by a shoulder screw and two jam nuts. When a welding process is producing a load or moment on the body part, it is necessary that a sufficient clamping force must be exerted to withstand such actions.

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And here holding the orange part. Load condition and configuration are not uniform, so it is impossible to set a base shape in general.

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.

BIW Fixture Design

The generalized requirements of clamping device can be summarized as: So, designing a fixture in this plane is often a complex process, considering the variations in coordinate systems and basic rules such as maintaining few elements in specific vixture. I guess fixtre would be the most important parameter of the fixture design.

The difference between the locate hole in the panel or body part and the locating pin diameter should be 0. Share them with me and I will include them in a future lesson.

The framework of the base is usually made of shape steel. I got some great feed back on the issue. The shape of locating surface is a biww of cross-section of panel.

It takes creativity to come up with solutions to tight spaces or welding metals that expand as they get hot. Enter the email address you signed up with and we’ll email you a reset link. In most applications, locating surface devices locate a panel by its external flat surfaces and flat area, such c,amping This configuration will allow easier loading of body part. The clamp presses down between the two pins.

Sometimes one clamp can be used to hold parts in a fixture that runs more than one product.