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A method for correcting the deflection of deep and long holes of rotary parts such as pistons

A technology of deep and long holes and parts, which is applied in the field of deep and long hole deflection of rotating body parts, can solve the problems affecting the on-time delivery of products, waste of raw materials, unqualified products, etc., to achieve stable quality, simple operation, guaranteed diameter and coaxiality The effect of precision

Active Publication Date: 2018-07-24
FLIGHT AUTOMATIC CONTROL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After deep and long holes are deviated, traditional methods cannot be corrected, resulting in unqualified products, affecting the on-time delivery of products, and causing a lot of man-hour loss and waste of raw materials

Method used

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  • A method for correcting the deflection of deep and long holes of rotary parts such as pistons
  • A method for correcting the deflection of deep and long holes of rotary parts such as pistons

Examples

Experimental program
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Embodiment

[0032] Example: Take an outer diameter as Inner diameter is Take a piston with a hole depth of 240 and a material of 15-5PH as an example. The design drawing of the piston requires coaxiality Describe the specific implementation of this patent:

[0033] (1) Measuring the diameter of the deep hole of the piston

[0034] (2) According to the measured piston deep hole diameter Calculate the mandrel diameter d:

[0035] Mandrel diameter d=26.05-0.01mm=26.04±0.01mm;

[0036] (3) Calculate the mandrel length L according to the piston inner hole depth H given in the previous process:

[0037] Mandrel length L≥240×2 / 3+30mm=190mm;

[0038] (4) Car steel mandrel according to (2) and (3) dimensions;

[0039] (5) Clamp the mandrel on the main shaft of the lathe, the clamping length is ≥ 20mm, put the piston on the mandrel, the inner hole of the piston is matched with the mandrel, and the piston can rotate freely around the axis of the mandrel;

[0040] (6) Measure the runout...

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PUM

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Abstract

The invention discloses a method for correcting deflection of deep and long holes of revolving parts like a piston, and relates to the field of machining. The method is suitable for correcting deflection of deep and long inner holes of the revolving parts like the piston, and the coaxiality of the deep holes and outer circles is guaranteed to be within 0.05mm. By the adoption of the method, the gun-drilling machined deep holes are used as the datum, the outer circles are turned until smoothness is achieved, and therefore the deflection of the inner holes and the outer circles can be corrected, and the diameter and coaxiality precision of the bored deep holes in the follow-up process is guaranteed.

Description

Technical field: [0001] The invention relates to the field of mechanical processing, in particular to a method for correcting the deflection of deep and long holes of rotary parts such as pistons. Background technique: [0002] In the processing of deep and long holes, affected by factors such as the uniformity of the material, the sharpness of the tool, and the symmetry of the tool angle, it is easy for the inner hole to deviate from the outer circle reference or the coaxial step hole, and the coaxiality is more than 0.3mm. It far exceeds the minimum requirements for rotary parts such as pistons. After deep and long holes are deviated, the traditional method cannot be corrected, resulting in unqualified products, affecting the on-time delivery of products, and at the same time generating a large amount of man-hour loss and waste of raw materials. Contents of the invention [0003] The purpose of the present invention is to ensure that the coaxiality of the deep hole and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/20B23P15/10
CPCB23P15/10B23Q17/20
Inventor 王娜夏爱宏刘海涛
Owner FLIGHT AUTOMATIC CONTROL RES INST
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