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Milling method for appearance of complex nozzle shell

A nozzle shell and shape technology is applied in the milling field of complex nozzle shell shapes, which can solve the problems of poor machining rigidity and equipment tension, and achieve the effect of increasing the processing time and shortening the time of clamping and alignment.

Active Publication Date: 2018-04-17
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The existing five-axis equipment has poor processing rigidity, and the equipment is relatively tight. Therefore, processing the product with three-axis equipment, processing on three-axis equipment, clamping and alignment, and processing efficiency have become processing difficulties.

Method used

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  • Milling method for appearance of complex nozzle shell
  • Milling method for appearance of complex nozzle shell
  • Milling method for appearance of complex nozzle shell

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Experimental program
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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] A milling method for a complex nozzle shell shape, the specific steps of the milling method are as follows:

[0035] Step 1: Car installation edge datum

[0036] like Image 6 As shown in , the end surface A and outer circle B on the back of the mounting side of the part after turning are used as the reference plane Z0 for subsequent milling to ensure that the part is smoothly installed on the fixture;

[0037] Step 2: Drill four holes

[0038] like Figure 7 , 8 As shown, based on the end face A and the outer circle B generated by the lathing mounting edge benchmark, drill and ream 4 uniformly distributed holes on the mounting edge as the angular benchmark of the milling shape; the diameter tolerance of the hole is controlled at H8 level, Position accuracy is within 0.05mm;

[0039] Step 3: Rough milling shape

[0040] Milling the surfa...

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Abstract

The invention discloses a milling method for the appearance of a complex nozzle shell. The milling method specifically comprises the steps that firstly, a mounting side benchmark is turned; secondly,four holes are drilled; thirdly, the appearance is roughly milled; fourthly, the appearance is subject to fine milling. A dedicated machining tool is designed on the key part, the coordinate conversion is achieved through tool aligning balls, an aligning method capable of achieving alignment one by one is changed into the alignment method capable of achieving batched machining through one-time alignment, the clamping and alignment time is shortened, the product machining time is shortened, and a three-axis device is efficiently used for finishing milling tasks of the complex surface.

Description

technical field [0001] The invention relates to a milling method for the outer shape of an aero-engine fuel nozzle shell, in particular to a milling method for a complex outer shape of the nozzle shell. Background technique [0002] The fuel nozzle housing is an important part of the fuel nozzle, such as figure 1 , 2 As shown, the blank involved in the present invention is a forging, the dotted line is the profile of the part, and the solid line is the profile of the blank, and the profile of the part is as follows image 3 As shown, due to the complex shape of its upper end, it consists of an inclined installation side 1, four evenly distributed holes 2 on the installation side 1, an annular groove 3 at the processing end of the oil passage, and two joints 4 at the inlet ends of the two oil passages. The shape of the connection between the two oil passage inlets and the oil passage is complex, with many spatial angles, and the machining allowance of the parts is uneven. ...

Claims

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Application Information

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IPC IPC(8): B23P23/02
CPCB23P23/02
Inventor 郑艳铭郭本乐张明龙战开明
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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