Machining process of combined boring spindle

Abstract

The invention relates to a machining process of a combined boring spindle, mainly solving the problem that the coaxiality of a front end hole, a tail hole and an outer ring can not reach 0.01 requiredin the prior boring spindle machining. The method comprises the following steps: blanking and respectively normalizing, rough machining and ageing; match grinding the outer circles a, b of a front section (1) and a middle section (2), processing dimension c to reach the requirement of a graph paper, grinding an inner circle f in the front section (1) and an inner circle g in a back section (3) toreach the requirement of the graph paper, processing an outer circle d and an inner circle e of the middle section (2), match grinding the outer circle e of the back section (3) and the middle section (2); combining the front section (1) with the middle section (2), processing the left end surface of an overall length, and then nitriding the combined front section (1) and the combined middle section (2), injecting glue by glue injection holes; combining the back section (3) with the front section (1) and the middle section (2), and after fastening, machining all dimensions to reach the requirement of the graph paper. The method for processing the combined boring spindle has low processing difficulty and high precision and reduces the labor intensity.

Description

Technical field: [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a processing technology of a combined boring shaft. Background technique: [0002] The boring shaft is the main shaft of the milling and boring machine, and it is an important part to ensure the machining accuracy. It is a hollow long shaft with high requirements for shape tolerance and dimensional accuracy. The workpiece is relatively long. During processing, it is necessary to process one end first, then change the direction and then process the other end. Multiple clamping makes it difficult to meet the processing accuracy requirements. Invention content: [0003] In order to overcome the deficiency that the coaxiality between the front hole, the tail hole and the outer circle cannot reach the required 0.01 in the existing boring shaft processing, the present invention provides a processing technology for the combined boring shaft, the processin...

AI Technical Summary

Problems solved by technology

[0002] The boring shaft is the main shaft of the milling and boring machine, and it is an important part to ensure the machining accuracy. It is a hollow long shaft with high requirements for shape tolerance and dimensional accuracy. The workpiece is relatively long. When processing, it is necessary to process one end first, then change the direction and then process the other end. Multiple clamping makes it difficult to meet the processing accuracy requirements.

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