A fixture for clamping workpieces of different heights

Abstract

The invention discloses a fixture for clamping workpieces at different heights. The fixture comprises a dovetail front seat, a dovetail front sliding seat, a dovetail rear seat, a dovetail rear sliding seat, a sliding bar, a fixture cross seat, a linear rail, a sliding block, an air cylinder and a rear cushion, wherein the dovetail rear seat is mounted and fixed at one end of the fixture cross seat; the dovetail rear sliding seat is mounted in a sliding rail on the inner side of the dovetail rear seat; the rear cushion is mounted at the dovetail rear sliding seat; the fixture cross seat is in a U-shaped structure; the dovetail front seat is mounted at the sliding bar, the dovetail front sliding seat is mounted on the inner side of the dovetail front seat; the bottom of the sliding bar is mounted at the sliding block; the air cylinder is mounted at the other end of the fixture cross seat; and an output end of the air cylinder acts on the sliding bar to allow the sliding bar to move on the linear rail. With the adoption of a clamping element capable of moving up and down, a clamping position of the clamping element can always be located in the middle of one workpiece, so that the fixture is simple in structure and better in clamping effect, and ensures the processing accuracy.

Description

technical field [0001] The invention relates to a numerical control machining center, in particular to a fixture for clamping workpieces with different heights. Background technique [0002] The CNC machining center has changed the traditional human-oriented production method. With the control of computer programs, it can complete various processing requirements, such as milling, drilling, boring, tapping, etc., which greatly shortens the processing time and reduces production. Cost, this is the biggest feature of CNC machine tools. [0003] A fixture is a device used to fix the processing object in the process of mechanical manufacturing so that it occupies the correct position for construction or inspection. In industrial production, fixtures are widely used. The use of fixtures can stably ensure the machining accuracy of workpieces, reduce auxiliary man-hours, improve labor productivity, expand the scope of use of machine tools, and realize one machine with multiple func...

AI Technical Summary

Problems solved by technology

[0004] In the CNC machining center, the fixture is an indispensable part of it, and it is also an important factor affecting the machining accuracy and processing efficiency. The existing cylinder fixtures are commonly used in CNC machining. These cylinder fixtures include fixed plates, moving plates and cylinders. , the workpiece is placed between the fixed plate and the movable plate, and the movable plate moves to the fixed plate under the drive of the cylinder. During the moving process, the workpiece is clamped together with the fixed plate, but such a fixture is not suitable for some high-height workpieces The clamping effect is not good, which will have an impact on the machining accuracy

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