Machining method for square work-piece

Abstract

The invention relates to a machining method for a square work-piece. According to the machining method, a three-jaw chuck is used for machining the square work-piece and the three-jaw chuck comprises a chuck body, three movable jaws and a jaw drive mechanism. The specific machining method comprises the following steps of: (1) cutting the parts (abutting against the work-piece) of the three jaws of the three-jaw chuck so that the surface composed of the tops of the three movable jaws is similar to the cross section of the machined work-piece in shape; and (2) further adjusting the jaw drive mechanism on the basis that the surface composed of the tops of the three movable jaws is similar to the cross section of the machined work-piece in shape in the step (1), so that the surface composed of the tops of the three movable jaws is superposed with the cross section of the work-piece, thus fixing the machined work-piece. According to the machining method for a square work-piece disclosed by the invention, the three processed movable jaws are used, and the section composed of the tops of the three jaws is superposed with the cross section of the work-piece under the action of the jaw drive mechanism, thus fixing the machined work-piece; moreover, the machining method for a square work-piece is simple in structure, convenient in operation, and low in cost.

Description

technical field [0001] The invention belongs to the field of mechanical processing, in particular to a processing method for a square workpiece. Background technique [0002] At present, for the surface processing of workpieces, three-jaw or four-jaw chucks are generally used to clamp the workpiece to be processed, and then programmed processing is performed. For regular workpieces (cylindrical bodies), three-jaw chucks are used to fix them, such as figure 1 As shown, according to the automatic centering effect of the three-jaw chuck 1', under the jaw drive mechanism, the three movable jaws 4' move toward the center of the chuck along the slot 30' on the chuck body 3', by The automatic centering function of the three-jaw chuck 1′ brings convenience to the fixing of the workpiece. However, not all the processed workpieces are regular cylinders, such as figure 2 As shown, the regular cube processing in real life adopts the four-jaw chuck 2', and according to the relative ind...

AI Technical Summary

Problems solved by technology

[0002] At present, for the surface processing of workpieces, three-jaw or four-jaw chucks are generally used to clamp the workpiece to be processed, and then perform programmed processing. For regular workpieces (Cylinder) is fixed by a three-jaw chuck, such as Figure 1, according to the automatic centering effect of the three-jaw chuck 1', under the jaw drive mechanism, the three movable jaws 4' move toward the center of the chuck along the slot 30' on the chuck body 3' The movement is automatically centered by the three-jaw chuck 1′, which brings convenience to the fixing of the workpiece. However, not all processed workpieces are regular cylinders, such as Figure 2 shows that the regular cube processing in real life uses a four-jaw chuck 2′, according to the four-jaw The four movable jaws 4' of the chuck 2' are relatively independent. Under the action of the driving mechanism of the four movable jaws 4', the four movable jaws 4' move along the clamping position on the chuck body 3'. The slots 30' move to the center of the chuck respectively, and directly act on the four surfaces of the cube, so as to achieve the stability of the workpiece processing. However, it is not easy to determine the center of the workpiece with the four-jaw chuck 2'. Generally, the processing of the cube workpiece is First use the four-jaw chuck 2' to process one end of the workpiece into a cylindrical shape, and then use the three-jaw chuck 1' to clamp the processed cylindrical shape for further processing. Therefore, in the processing of the square workpiece, The process is more complicated, the processing efficiency is not high, and the accuracy of the processed workpiece is relatively low, and the cost is also relatively high

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