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High-precision hole positioning and compressing structure

A compression structure, high-precision technology, used in positioning devices, clamping, support and other directions, can solve problems such as inability to guarantee high precision and repeated positioning requirements

Inactive Publication Date: 2019-02-12
CHANGHE AIRCRAFT INDUSTRIES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional expansion structure can achieve positioning and compaction without scratching the product surface, but cannot guarantee high precision and repeat positioning requirements

Method used

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  • High-precision hole positioning and compressing structure
  • High-precision hole positioning and compressing structure

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Embodiment Construction

[0012] Referring to the accompanying drawings, the high-precision hole positioning and pressing structure of the present invention will be described in conjunction with specific embodiments.

[0013] figure 1 and 2 It is a front view and an axonometric view of the high-precision hole positioning and pressing structure of the present invention, image 3 It is a perspective view of the high-precision hole positioning and pressing structure of the present invention. As shown in the figure, the high-precision hole positioning and pressing structure of the present invention includes a positioning mandrel 1, a pressing screw 2 and a positioning pin 3, and the positioning mandrel 1 has a positioning press for positioning and pressing the aircraft joint 4 and the bushing 5. The tight surface 6, the positioning mandrel 1 is provided with a through groove 9 that runs through the positioning pressing surface 6, the middle part of the positioning mandrel 1 is provided with a threaded ho...

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Abstract

The invention discloses a high-precision hole positioning and compressing structure. The structure comprises a positioning core shaft (1), a compression screw (2) and a positioning pin (3), wherein apositioning pressing surface (6) is arranged outside the positioning core shaft (1), a threaded hole (11) with a conical hole (7) in the bottom is formed in center of the positioning core shaft (1), and a through groove (9) penetrating through the positioning pressing surface (6) is formed in the positioning core shaft (1); the compression screw (2) is installed in the threaded hole (11), the topend is a conical surface (8), and an angle of the conical surface (8) is slightly smaller than the angle of the conical surface of the conical hole (7) of the positioning core shaft (1); and enough machining allowance of the positioning pressing surface (6) of the positioning core shaft (1) is reserved in advance, then the compression screw (2) is utilized to expand and deform the positioning coreshaft (1), and then the positioning pin (3) is inserted (3), under the condition that the relative position between the compression screw (2) and the positioning core shaft (1) is not changed, accurate machining is carried out according to the required precision. According to the high-precision hole positioning and compressing structure, a product can be positioned and compressed, the surface ofa product is not scratched in an assembling and disassembling process, and the high-precision requirement can be continuously ensured in repeated use.

Description

technical field [0001] The invention belongs to the field of process equipment structure design, and in particular relates to a high-precision hole positioning and pressing structure, which is used for high-precision positioning and pressing of bushing parts in key joint holes of aircraft. Background technique [0002] In the design of aircraft process equipment, it is sometimes necessary to position and compress the bushings installed in some key joints, so as to facilitate the bonding and forming of the bushings. The installation of bushings in these joints requires very high precision in size and coaxiality, and also requires very high surface quality. It must be able to position the product and press it tightly, and the product surface must not be scratched when the product is installed and disassembled. . The conventional expansion structure can achieve positioning and compaction without scratching the product surface, but cannot guarantee high precision and repeat pos...

Claims

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Application Information

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IPC IPC(8): B23Q3/14
CPCB23Q3/14
Inventor 赵细文黄海蛟高潮黄翔滕立超周浩
Owner CHANGHE AIRCRAFT INDUSTRIES CORPORATION
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