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Method for processing special deep holes

A processing method and deep hole technology, which is applied in metal processing equipment, manufacturing tools, boring/drilling, etc., can solve the problems of increasing processing costs and the inability of ordinary tools to meet the process requirements, and achieve the requirements of guaranteed accuracy and good economic benefits Effect

Inactive Publication Date: 2015-12-02
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the invention provides a special deep hole processing method. First prepare a plurality of drill bits whose diameter is equal to the diameter of the machining hole and whose length increases successively, and then process the drill bits so that the drill bit blade Composite process requirements, and then use the drill bit to process the holes from short to long, which solves the technical problems in the existing technology that adding special tools will increase the processing cost, and using ordinary tools cannot meet the process requirements

Method used

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Embodiment Construction

[0014] A processing method for a special deep hole, the steps of which are:

[0015] 1) Determine the length of the pore for processing;

[0016] 2) Prepare 4 or more ordinary drills. The diameter of the drill is equal to the diameter of the machining hole, and the length of the drill increases in turn. The length of the longest drill is greater than or equal to the depth of the machining hole, and the length of the other drills is less than that of the machining hole. deep;

[0017] 3) Drill bits used for processing:

[0018] 3a), the second front angle at the grinding place on the main cutting edge, the degree of which is less than or equal to 75°;

[0019] 3b) Grind out the arc transition edge of R0.2-0.5 on both sides at the corner of the outer edge of the knife, with a roughness of less than Ra0.4um, and the two transition edges are symmetrical to each other and have the same height;

[0020] 3c) Narrow the edge of the front end, leaving only a width of 0.1-0.2m, and t...

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Abstract

The invention discloses a method for processing special deep holes. The method comprises the following steps: (1) determining the lengths of fine holes to be processed; (2) preparing more than or equal to 4four ordinary drill bits, in which the diameters of the drill bits is are equal to that of holes to be processed, the lengths of the drill bits isare increased in sequence, and the length of the longest drill bit is greater than the depth of the holes to be processed; (3) processing the drill bits; and (4) processing the holes to be processed in sequence by using the drill bits with the lengths from small to large. Through the method, appropriate tools are used for processing the deep holes with high processing requirements; the excellent economic benefit is brought to the single-piece small-batch production with lack of special processing equipment; the accuracy requirements of the processed holes can be ensured; the technical problems that the processing cost is increased by the additionally-arranged special cutters and the process requirements cannot be met by ordinary cutters in the prior art can be solved.

Description

technical field [0001] The invention relates to a processing method for a special deep hole, which belongs to the field of mechanical manufacturing. Background technique [0002] The machinery manufacturing industry is the pillar of the national economy, and hole processing is an important branch of machinery manufacturing, among which deep hole processing accounts for 40% of hole processing. In the field of aircraft manufacturing, when it is necessary to process a special deep hole with a diameter limited to 5mm and a depth greater than 170mm in high-strength stainless steel, due to the strict requirements on the storage accuracy and shape and position tolerance of the hole, adding auxiliary equipment and special tool processing will improve It is difficult to guarantee the accuracy and stability of deep hole processing through the existing hole processing method without adding auxiliary equipment and special tools. Contents of the invention [0003] In order to solve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B41/02
CPCB23B41/02
Inventor 孙鹏高美娜王韧强
Owner SHENYANG AIRCRAFT CORP