A special fixture for clamping the frame of LCD TV

Abstract

The invention relates to a special clamp for clamping frames of a liquid crystal display television. The special clamp comprises a baseplate and a plurality of Z-direction positioning devices, wherein one or more rows of sectional clamping grooves are transversely formed in the working table of the baseplate; each Z-direction positioning device comprises a Z-direction clamping cylinder, a Z-direction connecting shaft and a clamping plate, and the Z-direction clamping cylinder is vertically mounted at the bottom of the baseplate and positioned under the groove surface of each clamping groove; one end of the Z-direction connecting shaft is connected with the Z-direction clamping cylinder, and the other end of the Z-direction connecting shaft penetrates through the groove surface and is vertically connected with the middle of the clamping plate; the up-and-down motion of the clamping plate is controlled by the Z-direction clamping cylinder, and frame workpieces positioned under the left edge and the right edge of the clamping plate are tightly pressed in groove positions to be positioned in a Z direction; two kinds of clamping plates are arranged. The special clamp with vertical clamping and positioning avoids the movement of the workpieces in an axial direction during processing and is reasonable in structure and attractive and neat in appearance.

Description

technical field [0001] The invention relates to the field of machining fixtures, in particular to a special fixture for clamping a frame of a liquid crystal television. Background technique [0002] With the development of numerical control technology, many parts of products are processed by CNC machine tools. Generally, fixtures need to be installed on the machine tool to clamp the workpiece or guide the tool. Its function is to position the workpiece so that the workpiece can obtain relative The correct position, and reliable clamping of the workpiece. In the processing of LCD TV frame workpieces, the frame workpieces are generally clamped by double fixed clamping fixtures on the left and right sides of the cylinder. When the workpiece is processed, it only receives the radial clamping force in the Y direction, and the workpiece in the Z direction axis It is prone to movement and affects the accuracy of processing. In addition, because the clamping contact surface of the...

AI Technical Summary

Problems solved by technology

In the processing of LCD TV frame workpieces, the frame workpieces are generally clamped by double fixed clamping fixtures on the left and right sides of the cylinder. When the workpiece is processed, it only receives the radial clamping force in the Y direction, and the workpiece in the Z direction axis It is easy to move and affect the precision of processing

In addition, because the clamping contact surface of the frame workpiece is small, if the radial clamping force is increased, the pressure loss of the frame workpiece may occur, so that the processing of the frame workpiece is not precise, and the qualified rate of the finished product is not high

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