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Machining method for controlling thickness of stainless steel sheet part

A technology of thickness control and processing method, applied in aircraft assembly and other directions, can solve the problems of relative position relationship not meeting theoretical requirements, increasing the difficulty of thickness and size, etc., to solve large and uncontrollable deformation, reduce grinding workload, and reduce manual intervention Effect

Inactive Publication Date: 2018-01-23
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following limitations: (1) The reference plane is not processed in place at one time, but the operator must ensure that it is connected; (2) After the reference plane is processed, the pressing plate is replaced, and the pressing state of the thin plate part changes, resulting in After the rough machining and finish machining of the thin plate parts, the relative positional relationship between the datum plane and the thin plate parts does not meet the theoretical requirements; There is an error in the actual position, which increases the difficulty of thickness control

Method used

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  • Machining method for controlling thickness of stainless steel sheet part
  • Machining method for controlling thickness of stainless steel sheet part
  • Machining method for controlling thickness of stainless steel sheet part

Examples

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Effect test

Embodiment 1

[0028] A processing method for thickness control of stainless steel thin plate parts, processing a milling sheet 3 for Boeing E-767 aircraft, the processing thickness of the milling sheet 3 is 7mm, mainly comprising the following steps:

[0029] Step S1, clamp the blank of the milling sheet 3, and open all the pressure plate grooves 2 on the blank; the pressure plate groove 2 is 0.3mm lower than the reference plane 1 to be repaired; press the blank by clamping the pressure plate groove 2 to press the blank. Processing, it is convenient to adjust the reference plane 1, so that the deformation of the milling surface 3 and the reference plane 1 are synchronized;

[0030] Step S2: if figure 1 As shown, press the pressure plate groove 2 of the milling sheet 3 to rough and finish the first surface of the milling sheet 3; after finishing the web of the milling sheet 3 in place, repair the reference plane in the same step 1. Rough machining, finishing first surface, and reference pla...

Embodiment 2

[0037] A processing method for thickness control of stainless steel thin plate parts, processing a face milling sheet 3 for Boeing E-767 aircraft, the processing thickness of the face milling sheet 3 is 5mm, mainly comprising the following steps:

[0038] Step S1, clamp the blank of the milling sheet 3, and open all the pressure plate grooves 2 on the blank; the pressure plate groove 2 is 0.2mm lower than the reference plane 1 to be repaired; by clamping the pressure plate groove 2, the blank is pressed against the milling surface. The surface piece 3 is processed to facilitate the adjustment of the reference plane 1, so that the deformation of the milled surface piece 3 and the reference plane 1 are synchronized;

[0039] Step S2: Press the pressing plate groove 2 of the blank, and perform rough machining and finishing machining on the first surface of the milling sheet 3; after finishing the web of the milling sheet 3 in place, repair the reference plane 1 in the same step; ...

Embodiment 3

[0046] A processing method for thickness control of stainless steel thin plate parts, processing a face milling sheet 3 for Boeing E-767 aircraft, the processing thickness of the face milling sheet 3 is 10mm, mainly comprising the following steps:

[0047] Step S1, clamp the stainless steel blank, and open all the pressure plate grooves 2 on the blank; the pressure plate groove 2 is 0.5mm lower than the reference plane 1 to be repaired; by clamping the pressure plate groove 2, the blank is pressed to perform milling sheet 3 Processing, it is convenient to adjust the reference plane 1, so that the deformation of the milling surface 3 and the reference plane 1 are synchronized;

[0048] Step S2: Press the pressing plate groove 2 of the blank, and perform rough machining and finishing machining on the first surface of the milling sheet 3; after finishing the web of the milling sheet 3 in place, repair the reference plane 1 in the same step; Carry out rough machining, finish machi...

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Abstract

The invention discloses a machining method for controlling the thickness of a stainless steel sheet part. The method comprises the following steps: firstly tightly pressing a blank of a sheet part toform all pressure plate grooves, wherein the pressure plate grooves are more than 0.2mm lower than a reference surface to be corrected; then tightly pressing the blank, carrying out rough machining and fine machining on a first surface, and when a web plate after fine machining is in place, correcting the reference surface under the situations of the same working step, the same tight pressing state and the same tool so as to reduce the the error between the actual distance and the theoretical distance between the sheet part and the reference surface; and during machining of a second surface, it is guaranteed that the reference surface and a positioning surface are tightly attached so as to effectively control the thickness of the sheet part. According to the machining method for controlling the thickness of the stainless steel sheet part, the machining errors of the stainless steel sheet part can be effectively reduced, the ultrathin phenomenon of the stainless steel sheet part is avoided, the machining efficiency of the sheet part is improved, and the machining quality and stability of the sheet part are ensured.

Description

technical field [0001] The invention belongs to the technical field of aircraft manufacturing, and in particular relates to a processing method for thickness control of stainless steel thin plate parts. Background technique [0002] With the further improvement of aircraft performance, a large number of integral thin-plate structural thin-plate parts are used in the modern aviation industry. Its main structure is composed of side walls and webs. It has simple structure, large size, low relative rigidity, and poor processing performance. The thickness control of thin plate parts with thin plate structure is relatively strict, and the machining accuracy and efficiency are low. [0003] With the development of aircraft design technology, aircraft structural parts are becoming more and more refined, and the requirements for thin-plate parts are becoming more and more stringent. Such thin-plate parts have relatively low rigidity and poor machinability. In particular, the precisi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B64F5/10
Inventor 张超胡伟尹成吴树宏邱洋郭根根
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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