Machining method for guaranteeing position accuracy of cartridge receiver hole system

A processing method and technology of position degree, which can be used in positioning devices, metal processing equipment, metal processing mechanical parts, etc., and can solve the problems of out of tolerance, inability to monitor the processing process, and no proofreading process.

Pending Publication Date: 2021-01-12
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the existing processing method, the casing is directly placed on the CNC machine tool, and the processing is carried out by aligning the processing zero point and the angular direction on the casing, so that after machining...

Method used

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  • Machining method for guaranteeing position accuracy of cartridge receiver hole system
  • Machining method for guaranteeing position accuracy of cartridge receiver hole system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Process a certain type of engine main case, the height is 450mm, the length is 1000mm, and the width is 800mm. A hole 1 is processed on it, and the hole 1 has a requirement of a positional degree of 0.1 mm for the datums D, E, and F.

[0054] Such as figure 1 As shown, the processing steps are as follows:

[0055] 1. According to the size of the receiver, select four auxiliary supports, such as figure 2 As shown in , the positioning block is used as the reference plane for rough machining of the casing;

[0056] 2. Process the positioning reference on the casing, the flatness of the positioning plane of the reference is 0.02mm, process two positioning holes on the positioning surface, and the position of one hole relative to the other hole is 0.015mm, which is consistent with the positioning surface of the casing The verticality is φ0.03mm. At the same time, a through hole is processed on the casing. The position of the through hole and the two positioning holes is ...

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Abstract

The invention relates to a machining technology in the machining and manufacturing industry, in particular to a machining method for guaranteeing the position degree of a cartridge receiver hole system. The method can be applied to machining of cartridge receivers of aviation aircrafts or engine in three-axis, four-axis and five-axis numerical control machining centers, technicians or operators refer to the method and adopt the measures of adding auxiliary supports, adding positioning pin holes, manufacturing special clamps and the like according to the method specified in the machining flow schematic diagram, so that various error factors in the cartridge receiver machining process can be effectively reduced and avoided, all operation steps are easy to understand, qualified products can be machined, and meanwhile a feasible high-precision cartridge receiver hole machining mode is explored.

Description

technical field [0001] The invention relates to the processing technology in the mechanical processing and manufacturing industry, in particular to a processing guarantee method for the position degree of the casing hole system. Background technique [0002] In recent years, with the continuous improvement of the performance and design mechanism of aero-engines, the structure of the engines has become more and more complex and compact. The structures of various casings on the engine are more complex and require higher precision, especially the bearing holes on the casing, which have stricter dimensional tolerances and shape and position tolerances. In order to ensure the accuracy and process a qualified casing, it is necessary to comprehensively consider the size and rigidity of the casing, the accuracy of the machine tool itself, the accuracy of the fixture, the artificial alignment error, the swing when the tool rotates, and the overhang of the tool under the action of gra...

Claims

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Application Information

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IPC IPC(8): B23B35/00B23Q3/06
CPCB23B35/00B23Q3/062
Inventor 苏海兵孔浩袁贺玲李迪刘宁
Owner HARBIN DONGAN ENGINE GRP
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