A method of processing fir tree-shaped arc tenon with forming milling cutter

A technology for forming milling cutters and fir-tree shapes, which is applied in milling cutters, metal processing equipment, milling machine equipment, etc., can solve the problems of high tool cost, low processing efficiency of fir-tree-shaped arc tenons, and low product qualification rate. The effect of improving processing efficiency, reducing tool consumption and improving processing efficiency

Active Publication Date: 2021-08-17
AECC AERO SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method for processing fir-tree-shaped arc tenons with a forming milling cutter. Using the forming milling cutter to process fir-tree-shaped arc tenons does not require multiple clamping, and the tenons, machine tool turntable and forming milling cutter are linked. Rotation can avoid over-cutting, so as to solve the problems of low processing efficiency, low product qualification rate and high tool cost of the existing fir tree arc tenon

Method used

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  • A method of processing fir tree-shaped arc tenon with forming milling cutter
  • A method of processing fir tree-shaped arc tenon with forming milling cutter
  • A method of processing fir tree-shaped arc tenon with forming milling cutter

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Effect test

Embodiment 1

[0046] Please refer to Figure 1-3 , in order to process the fir tree-shaped arc tenon, a special forming milling cutter is made, including a cutter bar 1, a cutter tooth 2 and a blade support seat 3, and the blade support seat 3 is installed on one end of the cutter bar 1, The blade supporting seat 3 is provided with a reference step surface 301, a first step surface 302 and a second step surface 303 from the end of the knife bar 1 to the tip of the knife, and the tool bar 1, the reference step surface 301, the first step surface 302 and the center line of the second stepped surface 303 are on the same straight line, and the said reference stepped surface 301, the first stepped surface 302 and the second stepped surface 303 are provided with five said cutter teeth 2, five said The cutter teeth 2 have the same structure, and the five cutter teeth 2 of each layer are distributed equiangularly to the center line of the cutter bar 1, and the connecting line of the cutting edge pr...

Embodiment 2

[0053] In this embodiment, the fir tree-shaped arc tenon is processed on a CNC milling machine of the model TMH-630. First, rough milling is carried out to the wool 5 with a disc cutter, and then the basin pressure of the fir tree arc tenon is obtained by fine milling with a rod knife. surface and back pressure surface, and then use the forming milling cutter to process the air inlet surface 402 of the blade tenon and the air outlet surface 401 of the blade tenon.

[0054] The fir tree-shaped arc tenon of this embodiment is processed with wool 5 made of stainless steel, and the material of the forming milling cutter used is cemented carbide K40UF.

[0055] The method for processing the fir tree-shaped arc tenon by using the forming milling cutter mainly includes the following steps:

[0056] The first step is to roughly process the wool 5 to form a preliminary wool with tenon profile: fix the wool 5 on the fixture of the machine tool turntable 6, make the central axis 406 of t...

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Abstract

The invention discloses a method for processing a fir tree-shaped arc tenon with a forming milling cutter. The forming milling cutter includes a cutter bar, cutter teeth and a blade support seat, and the blade support seat is installed at one end of the cutter bar. , the blade supporting seat is provided with a reference step surface, a first step surface and a second step surface sequentially from the end of the tool bar to the tip of the knife, and the reference step surface, the first step surface and the second step surface are all provided with Five described cutter teeth, the five described cutter teeth have the same structure, and the five described cutter teeth of each layer are distributed equiangularly to the center line of the cutter bar, and the connecting line of the cutting edge profile line of the described cutter teeth is The fir tree-shaped arc surface of the workpiece to be processed matches and is a helical line; processing the fir tree-shaped arc tenon with the forming milling cutter does not require multiple clamping, and the joint rotation of the tenon, machine tool turntable and forming milling cutter can avoid machining overcut , to solve the problems of low processing efficiency, low product qualification rate and high tool cost of the existing fir tree arc tenon.

Description

technical field [0001] The invention relates to the technical field of processing engine blade tenons, in particular to a method for processing fir tree-shaped arc tenons by using a forming milling cutter. Background technique [0002] Blades are essential parts of engines, gas turbines, fans and other equipment. The shape and structure of blade tenons vary with the types of engines, gas turbines, and fans. The blade tenon of the engine also has a variety of structural forms. The fir tree-shaped arc blade tenon refers to the tenon whose root shape is fir tree shape and the direction of the back of the pot is arc. Figure 8 ; It is very difficult to process the mortise of this type of blade. In the past, a small ball knife was used to scan and process each part step by step, but this method has extremely low processing efficiency, it is difficult to ensure the qualified size, and the tool consumption is relatively large. Contents of the invention [0003] The object of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C5/02B23C3/00
CPCB23C3/00B23C5/02
Inventor 熊杰罗培真陈勇吴金蓬晏盼郝丽仙周勇裴聪雷浩强蒲双龙魏上荣彭远松
Owner AECC AERO SCI & TECH CO LTD
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