Small-diameter step deep hole processing technology of shaft part and technological device

Abstract

The invention relates to a small-diameter step deep hole processing technology of a shaft part and a technological device, which belongs to the technical field of machinery manufacture. A chambering boring cutter is arranged on a substrate, and an excircle of the substrate of the chambering boring cutter is provided with a bearing key; a blind hole boring cutter is arranged at the front end of a blind hole boring head, and the blind hole boring cutter is in an L-shaped structure; a rolling cutter consists of a substrate and a tumbling pillar, and the substrate comprises a cutter shaft and an adjustable technological device; and the chambering boring cutter, the blind hole boring cutter and the rolling cutter are all connected with an ordinary boring rod through thread pairs. The cutters can complete the small-diameter step deep hole processing of the shaft part through the processing steps of drilling a large-hole end, drilling a small-hole end, finely boring a small end hole, half finely boring a large end hole, counterboring a step, finely boring the large hole end, rolling the large hole end, detecting and warehousing. The special cutters simplifies the mechanical processing technology of the shaft part, and masterly solves the problems of easy eccentricity of deep drilling, size off-tolerance of the step in a hole, poor aperture surface quality and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to the mechanical processing technology of shaft parts. Background technique [0002] At present, for small-diameter step deep holes with such high requirements on surface quality and transition steps, the traditional processing technology consists of the following process steps: Step 1: Drill a through hole with a deep hole in the center of the axis of the workpiece; Step 2: Through-length boring to the drawing requirements of the small end hole; the third step: re-drilling the large end hole; the fourth step: rough boring the large end hole; the fifth step: the inner step size of the boring hole meets the drawing requirements; Drawing requirements; Step 7: Polish the inner hole of the big end. [0003] The disadvantages of traditional knives and techniques are: [0004] (1) Use a deep hole drill to drill a hole (diameter <φ55mm) at one time, and the deep diamet...

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Problems solved by technology

[0008] In order to overcome the shortcomings of the existing technology, the present invention provides a small-diameter stepped deep hole processing technology and technological equipment for shaft parts to solve the problems of easy eccentric drilling of deep holes, out-of-tolerance step dimensions in the hole, poor hole surface quality, Problems such as low product qualification rate

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