Processing method of internal keyway of conical hole

Abstract

The invention discloses a processing method of an internal keyway of a conical hole, belonging to the field of machining. The process method comprises the following steps of: providing a workpiece to be processed, wherein the workpiece to be processed is internally provided with a conical hole; vertically placing the workpiece to be processed on a cutting workbench and keeping one end with smaller aperture of the conical hole to face upwards, so as to enable the central line of the conical hole to be parallel to the movement track of a cutter; determining the center position of the conical hole; with the center position of the conical hole as a reference, beginning to vertically cutting the workpiece to be processed from one end with smaller aperture of the conical hole to obtain a vertical keyway, wherein the vertical keyway forms the top of a keyway to be processed, and two side surfaces of the vertical keyway are symmetrical relative to the center position of the conical hole; putting the workpiece to be processed on a tool with an inclined surface and enabling the generatrix of the conical hole to parallel to the movement track of the cutter; with two side surfaces of the vertical keyway as references, determining the center position of the keyway to be processed; and with the center position of the keyway to be processed and the bottom surface of the one end with smaller aperture of the conical hole as references, vertically cutting the workpiece to be processed to obtain the processed keyway. The processing method disclosed by the invention can achieve the purpose of batch processing.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a method for processing a keyway in a tapered hole. Background technique [0002] The keyway matches the key and is used to install the key. Typically, keyways are machined on the shaft or in the bore. Wherein, when the keyway is processed in the hole, the movement trajectory of the tool cutting the keyway is the direction of the generatrix of the keyway; the machining positioning surface is a surface perpendicular or parallel to the center line of the hole. [0003] In particular, when the hole is a tapered hole, since the generatrix of the tapered hole is not parallel to the center line of the hole, the movement track of the tool is neither parallel nor perpendicular to the positioning surface, so it is difficult to process the keyway in the tapered hole. The existing way of machining the keyway in the tapered hole is to adopt a slotting machine and a fitter to process th...

AI Technical Summary

Problems solved by technology

[0005] After the slotting machine is processed, the fitter needs to be repaired according to the shaft and key matching the keyway to be processed. This single-matching processing method not only makes it difficult for the fitter to scrape, but also makes individual parts not interchangeable, which is not suitable for mass production. processing and manufacturing

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