Method for manually drilling hole in curved surface precisely in normal vector direction

A technology of normal vector direction and curved surface, which is applied in the field of curved surface machining, can solve the problems of large dependence on technical experience, increased equipment investment, and the risk of hole out-of-tolerance, etc., and achieve low operational difficulty, eliminate scrapped parts, and easy control of precision Effect

Inactive Publication Date: 2016-12-21
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for manually making holes on a curved surface according to the normal vector direction, which is used to solve the problem that the existing manual hole making method described in the b

Method used

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  • Method for manually drilling hole in curved surface precisely in normal vector direction
  • Method for manually drilling hole in curved surface precisely in normal vector direction
  • Method for manually drilling hole in curved surface precisely in normal vector direction

Examples

Experimental program
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Example Embodiment

[0029] Example 1:

[0030] In the following, 16 holes of φ9.6mm need to be made on the curved surface of the wing root of a certain type of aircraft, and the perpendicularity requirement is φ0.1mm as an example for further explanation. Among them, the root of the wing is a concave curved surface with a large curvature and an average radius of 450mm. Use the existing technology to carry out the operation experiment, the data is as follows:

[0031] Select a primary operator, an intermediate operator, a senior operator, an operating technician, and a senior operator with aircraft riveting and fitter operations, and conduct 16 holes for each of the above-mentioned wings, and obtain the corresponding average per person through experimental measurement The verticality is: φ2 mm, φ1.8 mm, φ1.2 mm, φ0.58 mm, φ0.36 mm, and the maximum verticality tolerance of a single hole is: φ2.8 mm, φ2.3 mm, φ1 .7 mm, φ0.69 mm, φ0.48 mm, it is possible to rely on personal experience and visual inspect...

Example Embodiment

[0042] Example 2:

[0043] Attached Figure 1-3 As shown, a method of manually making holes on a curved surface in the direction of the normal vector includes the following steps:

[0044] 1.1 Install the skin 2 on the skeleton 1 and fix it in position;

[0045] 1.2 Install the curved mold 3 on the outer surface of the skin 2 and connect and fasten the curved mold 3 with the skeleton 1 by positioning pins 5;

[0046] 1.25 Adjustment and verification of the gap between the skin 2 and the skeleton 1, the gap between the skin 2 and the curved surface drill 3, the tool used for the verification is a feeler gauge, the feeler gauge The insert end is semicircular, radius R=5mm, and thickness 0.6mm.

[0047] 1.3 Install the primary hole drill sleeve 4 in the processing hole 32 provided on the curved surface drilling mold 3; in this step, the inner diameter of the primary hole drill sleeve 4 is φ6mm, and the inner diameter of the processing hole 32 is φ16mm;

[0048] 1.4 Use a drill to drill th...

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Abstract

The invention discloses a method for manually drilling a hole in a curved surface precisely in the normal vector direction. The method comprises the following steps that 1.1, a skin is installed on a framework, positioned and fixed; 1.2, a curved surface drilling jig is installed on the outer surface of the skin, connected with the framework in a positioned mode and fastened through a positioning pin; 1.3, a primary hole drill bushing is installed in a machining hole formed in the curved surface drilling jig; 1.4, the skin is drilled through from outside to inside in one time through a drill bit in the guide direction of the primary hole drill bushing; 1.5, the primary hole drill bushing in the step 1.4 is replaced with a hole expanding drill bushing, and a corresponding hole expanding drill bit is used for conducting step-by-step hole expanding and/or hole reaming till a finished hole is formed; 1.6, the steps from 1.3 to 1.5 are repeated for other machining holes; and 1.7, burr treatment is conducted on the machining holes. According to the method for manually drilling the hole in the curved surface precisely in the normal vector direction, the problem that the perpendicularity of the axis of the curved surface hole is difficult to control is solved through the curved surface drilling jig and the primary hole drill bushing, and the situation that a part is scrapped due to the fact that the perpendicularity of the machining hole is out of tolerance is greatly reduced.

Description

technical field [0001] The invention relates to the field of curved surface mechanical processing, in particular to the field of manual drilling technology on the curved surface mechanical surface, specifically, a method for manually making holes on the curved surface according to the direction of the normal vector. Background technique [0002] The verticality of the normal holes made on the curved surface during the assembly of aircraft components directly affects the verticality of the connectors. If the verticality is out of tolerance, the protruding amount of the nail head of the connectors will exceed the specified technical requirements and affect the connection of the connectors. strength. Therefore, there are strict requirements on the perpendicularity of the normal holes on the surface. With the popularization and use of new connectors and the improvement of aircraft surface quality, the verticality of such holes is becoming more and more strict. [0003] At pres...

Claims

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Application Information

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IPC IPC(8): B23P13/02B23B47/28
CPCB23P13/02B23B47/28
Inventor 张宜德詹有河贾朝定
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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