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Reverse drilling matching repairing method of high-precision combined shell

A high-precision, shell technology, applied in the direction of boring/drilling, drilling/drilling equipment, metal processing equipment, etc., can solve the problems of scrapping and loss of shell components, and achieve convenient clamping and processing and positioning accuracy High and prolong service life effect

Active Publication Date: 2019-04-19
XIAN AERO ENGINE CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the life of complex shell components such as drills expires and returns to the factory, once one piece of the shell is scrapped, the entire shell component will be scrapped, causing huge losses

Method used

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  • Reverse drilling matching repairing method of high-precision combined shell
  • Reverse drilling matching repairing method of high-precision combined shell
  • Reverse drilling matching repairing method of high-precision combined shell

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Experimental program
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Embodiment Construction

[0025] see figure 2 as well as image 3 , the present invention provides a method for repairing the reverse drill of a high-precision combined casing, the method for repairing the reverse drill of the high-precision composite casing includes the following steps:

[0026] 1) Determine the relative position of existing hole A1, hole B1 and matching hole C1 on the first complex shell; the first complex shell is an existing qualified shell, and its specific implementation method is:

[0027] 1.1) On the first complex shell, the matching hole C1 is used as the measurement zero point, and any hole in hole A1 and hole B1 is used as the measurement reference hole, and the measurement coordinate system is established by connecting the measurement zero point and the measurement reference hole;

[0028] 1.2) Measure the coordinates of hole A1 and hole B1 by a high-precision measuring instrument in the measurement coordinate system established in step 1.1), which are respectively (X A1...

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Abstract

The invention relates to a reverse drilling matching repairing method of a high-precision combined shell. The method includes the steps that relative positions of a hole A1, a hole B1 and a matching hole C1 in a first complicated shell are determined; the obtained relative positions of the hole A1, the hole B1 and the matching hole C1 in the first complicated shell are used for machining a hole A2, a hole B2 and a matching hole C2 in a second complicated shell; relative positions among the hole A2, the hole B2 and the matching hole C2 in the second complicated shell are measured; the relativepositions, obtained due to actual measuring, among the hole A2, the hole B2 and the matching hole C2 are compared with the relative positions of the hole A1, the hole B1 and the matching hole C1, andif a difference value is within a tolerance range, the second complicated shell is qualified; and if not, the second complicated shell is an unqualified product. The reverse drilling matching repairing method of the high-precision combined shell avoids that a whole drilling matching type shell assembly is scraped and the drilling matching qualification rate of the shell assembly is increased.

Description

technical field [0001] The invention belongs to the technical field of repairing complex combined casings of aviation fuel accessories, and relates to a method for repairing reverse drilling of casings, in particular to a method for repairing reverse drilling of high-precision composite casings. Background technique [0002] With drill shell components (such as figure 1 Shown) is to assemble two or more shells together with special tooling, press them together while ensuring high positional accuracy, and process positioning pin holes and positioning pin holes on two or more shells at the same time . After the housing is separated, press in the positioning pins. The two or more shells after combined processing become a fixed set of shell components, and the two shells can also be combined after being disassembled, and the repeated positioning accuracy is very high. As the lifespan of the complex shell assembly with diamonds expires and returns to the factory, once one piec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B35/00B23B41/00
CPCB23B35/00B23B41/00
Inventor 丁巍康银辉王震周华勇雷刚张童
Owner XIAN AERO ENGINE CONTROLS
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