Flexible positioning fixture and flexible positioning method

Abstract

The invention relates to a flexible positioning clamp and a method using the clamp for positioning workpieces. A front-back driving device and a left-right driving device of the flexible positioning clamp can independently conduct drive, the driving devices and a guiding device are all arranged in a frame body of the bottom face of a work table, and the positioning clamp can form one or more positioning work stations according to the requirement so as to position the workpieces of different sizes and numbers.

Description

technical field [0001] The invention relates to the technical field of machine tool processing, in particular to a flexible positioning fixture and a corresponding flexible positioning method. Background technique [0002] In the prior art, machine tools are usually used to fine-process workpiece blanks to form shaped workpieces. The workpiece blanks have various shapes, such as blocks, plates, and even irregular bodies. [0003] In the fields of smart watches, mobile phones, tablet computers, automotive display screens, etc., forming a touch glass cover usually involves a plate-shaped workpiece blank. At present, CNC machine tools are used to process the plate-shaped workpiece blank. Even if it is The currently popular 3D glass is also formed by first processing the shape with a CNC machine tool and then bending it into a 3D structure. These glass products have a wide range of dimensions, ranging from 1 inch to more than 30 inches in length and width, and ranging from 0.1 ...

AI Technical Summary

Problems solved by technology

[0010] First, when the size of the processed product changes or the number of stations changes, it is necessary to change the fixture specifications or the number of fixtures on the workbench, the operation efficiency is very low, it is difficult, and even the entire fixture device needs to be redesigned

[0011] Second, the two mutually perpendicular limiters in the fixture are synchronously driven by a group of drivers, and the two directions of limit are carried out at the same time, which makes it impossible to realize time-sharing positioning in some applications that require two directions. step positioning control, and it is impossible to adjust the positioning accuracy of the two directions separately

[0012] Third, the position of the fixture is adjusted in another direction through the chute, forming a relatively complex mechanical structure. In the harsh environment with both cutting chips and cutting fluid, it is easy to be corroded and polluted, and the overall stability and reliability of the fixture is reduced. , the economy becomes worse, and the movement strokes in both directions cannot be adjusted once they are set through the chute;

[0013] Fourth, the external layout of the drive and the chute increases the space occupation of the entire fixture, which not only limits the installation size of the workbench, but also limits the effective processing range of the machine tool. It is also easy to cause interference and collision between the spindle and the fixture. Also complicates fixture installation

[0014] Fifth, the fixture uses guide rods and cylinders as the driving mechanism. The guide rods are precision transmission parts, and most of them adopt rolling friction transmission mode, which cannot be polluted. Water-based cutting fluid is basically used in glass processing, and glass powder is continuously produced during the processing process. Damage to these transmission parts is fatal, the life of the drive and its guiding functions is very short

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