Vehicle body clamp

Abstract

The invention provides a vehicle body clamp, which belongs to the technical field of work piece clamping and positioning devices. The vehicle body clamp comprises a base; the upper surface of the base is connected with a transition plate; an air cylinder is arranged on the left side of the transition plate; the upper end of the air cylinder is connected with a rocking arm through a pin shaft; the left end of the upper surface of the transition plate is connected with the rocking arm through a hinge; a notch is formed at the right part of the upper surface of the transition plate; a positioning block is connected in the notch; the right end of the rocking arm is connected with a floating pressure head mechanism; the floating pressure head mechanism is positioned above the right part of the positioning block; the floating pressure head mechanism comprises an inverted-T-shaped pressure head; threads are formed at the upper part of the pressure head; and the pressure head upwards penetrates through a spring and the rocking arm in sequence and then is connected with a nut. The vehicle body clamp can be applicable to the clamping and positioning of work pieces with different material thicknesses, not only meets the requirements of welding spaces of welding tongs, but also can improve the welding quality, saves the production cost of the work pieces, and reduces the manufacture time of the work pieces, so that the production efficiency of the clamp is effectively improved.

Description

technical field [0001] The invention relates to a workpiece clamping and positioning device, in particular to a vehicle body fixture for clamping workpieces. Background technique [0002] In the fixture design process of the automobile, the simple positioning and pressing structure is widely used in the fixture design unit to enhance the stability of the product during welding to meet the requirements of product welding. Usually, the distribution principle of the positioning block and the pressing block is that they should be as close as possible to the welding point to enhance the welding quality of the product assembly, and at the same time, pay attention not to affect the welding plate of the welding tongs. [0003] The existing body fixture includes a base, the base is connected with a transition plate, the left side of the transition plate is provided with a cylinder, the upper end of the piston rod on the upper part of the cylinder is connected to the left end of the r...

AI Technical Summary

Problems solved by technology

[0004] However, when the positioning and pressing structure of this fixture is used, if the same position is placed multiple times at the same station or the thickness of the workpiece is greater than the thickness of the standard workpiece, only this positioning and pressing is used under the condition that the pressure of the cylinder is equal. The mechanism will position and compress the workpiece, which may cause the workpiece to be crushed; if multiple positioning and pressing blocks are set to position and compress the same or similar positions, the processing time of the fixture will be prolonged, the welding space of the fixture will be reduced, and the workpiece fixture will be damaged. Increased production costs

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