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A finishing device and finishing method for a symmetrical large hole on a symmetrical part
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A kind of parts and symmetrical technology, applied in the field of high-precision processing devices, can solve the problems of the precision not reaching the expected effect, waste of tooling and processing man-hours, etc., to achieve the stability of the pressing state of the parts, save the cost of the fixture, and meet the requirements of the parts. Effect
Active Publication Date: 2017-10-24
SHENYANG AIRCRAFT CORP
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Problems solved by technology
[0002] There are many symmetrical parts on the aircraft, and there are symmetrical large holes on them. In the prior art, the methods of processing large holes of such symmetrical parts are mostly processed by using different tooling. Therefore, two sets of fixtures need to be designed to meet the processing requirements. At the same time, the tooling and processing man-hours are wasted, and the error accumulation of multiple positioning is also generated, and the accuracy cannot reach the expected effect.
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Embodiment 1
[0027] Embodiment 1 A finishing device for symmetrical large holes on symmetrical parts
[0028] like Figure 1-Figure 5 As shown, a finishing device for symmetrical large holes on symmetrical parts is composed of a main body 10, a positioning and pressing device I20, a positioning and pressing device II30, a tangential clamping device 40 and a boring device 50.
[0029] The main body 10 adopts welding form, and the material is Q235-A.F. The main body 10 is provided with an "I" type bracket 11 .
[0030] The two sides of the bracket 11 are respectively symmetrically provided with a positioning and pressing device I20, a positioning and pressing device II30 and a tangential clamping device 40; Between; Boring device 50 and the main body 10 movably connected.
[0031] The positioning and pressing device I20 is composed of a pressing plate I21, a shoulder nut I22, a diamond positioning pin 23, a bolt I24 and a positioning plate I25; The cooperation of the pin 23 connects the ...
Embodiment 2
[0035] Embodiment 2 A finishing method for symmetrical large holes on symmetrical parts
[0036] Adopt the finishing device of embodiment 1, method is as follows:
[0037] 1) Positioning: take the surface of the positioning plate I25 and the surface of the positioning plate II35 as the positioning surface of the finishing device, and use the cylindrical positioning pin 33 and the rhombic positioning pin 23 to position the part;
[0038] 2) Compression: Through the cooperation of the pressure plate Ⅰ21, the shoulder nut Ⅰ22 and the diamond-shaped positioning pin 23, and the cooperation of the pressure plate Ⅱ31, the shoulder nut Ⅱ32 and the cylindrical positioning pin 33, the positioning and pressing device Ⅰ20 and the positioning and pressing device Ⅱ30 are pressed. On the surface of the part to be processed 60, ensure that the positioning surface of the part to be processed is attached to the positioning surface of the finishing device in step 1);
[0039] 3) Insert one end ...
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Abstract
The invention relates to a finish machining device and finish machining method for symmetric large pores in symmetric parts. According to the finish machining device, a body is provided with a support which is shaped like a Chinese character 'gong', and locating pressing devices I, locating pressing devices II and tangential pressing devices are symmetrically arranged on the two sides of the support; a hole boring device is arranged between two symmetric sets of the positioning pressing devices II and tangential pressing devices; the hole boring device is fixedly connected with a base through bolts and pins. When machining is conducted, the surfaces of locating plates are taken as the locating surfaces of the finish machining device, each part is located through cylinder locating pins and diamond locating pins; the locating pressing devices I and the locating pressing devices II are pressed on the surface of each part to be machined; each part is clamped tightly by rotating double-headed screws. By means of the finish machining method, high precision machining on the two symmetric large pores of each part is achieved, the dimension of a finished part hole meets requirements of drawing precision, after two symmetric parts are machined, states of the two symmetric parts are the same, the fixture cost is reduced, and meanwhile use requirements of the parts are met.
Description
technical field [0001] The invention mainly relates to a high-precision processing device and processing method for large holes on two symmetrical parts under the same state. Background technique [0002] There are many symmetrical parts on the aircraft, and there are symmetrical large holes on them. In the prior art, the methods of processing large holes of such symmetrical parts are mostly processed by using different tooling. Therefore, two sets of fixtures need to be designed to meet the processing requirements. At the same time, the tooling and processing man-hours were wasted, and the error accumulation of multiple positioning was also generated, and the accuracy could not reach the expected effect. Contents of the invention [0003] In order to solve the above problems, the present invention provides a device for machining large holes of two symmetrical parts with high precision at the same time using one tooling. [0004] Another object of the invention is to prov...
Claims
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