A method and device for grinding an end face in an eccentric cavity

Abstract

A method for grinding an end face in an eccentric cavity, which includes the following steps, step A, providing a base with a cylindrical hollow structure, the base includes a bottom surface for contacting with the chuck of a grinding machine in the axial direction and a bottom surface for carrying the The top surface of the shaft-like parts, the top surface is provided with an eccentric hole, the shaft-like parts are assembled in the eccentric hole Step B, the base is installed on the chuck of the grinding machine, the type The two inner end faces of the cavity are ground. Step C, after completing the grinding process of the inner end surface of one cavity in step B, repeat the steps of step B to complete the grinding process of the inner end surface of the second cavity. In step D, the operations of step B and step C are repeated until the inner end faces of all the cavities are ground. The method for grinding the inner face of an eccentric cavity provided by the present invention greatly improves the processing efficiency. The present invention also provides a device used in the above method.

Description

Technical field [0001] The present invention relates to the field of machining, and in particular, to a method and apparatus for grinding the inner end surface of the eccentric cavity of the disk shaft. Background technique [0002] figure 1 Schematic diagram of stereoscopic structural schematic of a small and medium-sized aero-engine type part; see figure 1 As shown, the structure of the component 100 is a disk shaft type structure, and four radial penetration cavities 101 are disposed in the circumferential direction of the disc, and the cavity 101 has an axial direction in the axial side walls. The circular hole 102 is provided between the two adjacent two of the same radial plane, and is provided with an alleviation hole 105, i.etertering it, the disk body is all in both sides of the axial side. There are four mitigation holes 105, and the roughness of the two inner end faces 103 (104) of the axial direction of the cavity 101 is Ra0.4, and there is a verticality requirement ...

AI Technical Summary

Problems solved by technology

But because the area of ​​the circular hole 102 is smaller than the area of ​​the inner end surface 103 (104) of the cavity 101, for example, when taking the axis of the circular hole 102 as a reference, the diameter of the circular hole 102 is Φ50mm, and The maximum diameter of the cavity 101 is Φ90mm, so when the grinding machine adopts the conventional grinding method, after the grinding wheel passes through the circular hole 102, it can only process the end face of the Φ50mm range based on the axis of the circular hole 102. The inner end faces at other positions cannot be machined

Therefore, in the existing processing method, it needs to go through multiple processes, and it is difficult to process and shape the inner end surface 103 (104) of the cavity 101 at one time.

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