Method for machining lug-type notch in numerical control mode

A notch and lug technology, which is applied in metal processing equipment, manufacturing tools, milling machine equipment details, etc., can solve the problems of lug-type notch deformation, NC machining makes it difficult to guarantee the size of the knife and notch, and achieve tool loss Small amount, wide application range, and the effect of improving roughness

Active Publication Date: 2016-05-04
SHENYANG AIRCRAFT CORP
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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems of the deformation of the lug-type notch and the difficulty in guaranteeing the size of the knife and the notch in CNC machining, the present invention provides an economical and practical method for machining the lug-type notch by numerical control

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  • Method for machining lug-type notch in numerical control mode
  • Method for machining lug-type notch in numerical control mode
  • Method for machining lug-type notch in numerical control mode

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Embodiment Construction

[0023] The invention relates to a method for numerically-controlled machining of a lug-type notch. The structure of the lug-type notch is as follows: figure 1 , 2 , as shown in 3; the lug-type notches are prone to deformation to varying degrees, and the main manifestations are "closing" or "opening";

[0024] 1. The state of "closed" is as follows Figure 4 As shown, that is, the width dimension 7 of the notch after rough machining is smaller than the theoretical notch width dimension 6;

[0025] For example: if the rough machining width of the notch is 40mm, and the thickness of the lugs on both sides is 10mm, the main manifestation after the phenomenon of "closing" is (the maximum lower deviation is the same value, and its value is negative): At this time, the notch The size is less than the maximum tolerance of the rough machining width of 40mm, that is, the width of the notch is "40-maximum lower deviation"; the thickness of the lug is greater than the theoretical size o...

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Abstract

The invention discloses a method for machining a lug-type notch in a numerical control mode, and belongs to the technical field of mechanical machining. The method comprises the steps that 1, the structural form of the lug-type notch of a part is analyzed; 2, processes for machining the notch are selected; 3, the form and specification of a T-shaped tool for rough machining and the form and specification of a T-shaped tool for fine machining are selected; 4, a numerical control machining procedure is programmed; 5, the processes are detected, if an opening is formed at the notch, the fine machining procedure is adjusted according to a difference value between the size of the opening and the theoretical size of the notch, a step 7 is performed, if a necked opening is formed at the notch, the size of the necked opening is recorded, and according to a different value between the theoretical size of the notch and the size of the necked opening, a step 6 is performed to trim the size of the notch; 6, an up milling procedure is performed for the necked opening, and after the size is qualified, the step 7 is performed; 7, fine machining is performed on the size of the notch; 8, the size of the notch obtained through fine machining is detected. Accordingly, numerical control machining of the lug-type notch is achieved, and the advantages of being high in machining efficiency for lug-type notch structural parts, little in tool loss amount, low in assistance cost and wide in application range are achieved.

Description

technical field [0001] The invention relates to a method for machining a notch by numerical control, in particular to a method for machining a lug-type notch by numerical control, and belongs to the technical field of machining. Background technique [0002] In the field of aviation product manufacturing, part of the connecting structure or arm-like titanium alloy is designed as a structure with a lug-type notch. During the processing of this type of groove, it is easy to deform to varying degrees, and the main form is "closed". Or "opening", because the contact between the milling cutter and the workpiece will inevitably destroy the partial stress distribution inside the part, it is very easy to have unstable milling volume inside and outside the notch, and it is difficult to ensure the accuracy of the notch size. Contents of the invention [0003] In order to solve the above-mentioned technical problems of deformation of the lug-type notch and difficulty in ensuring the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/34
CPCB23C3/34B23C2220/605
Inventor 孙国雁王金海
Owner SHENYANG AIRCRAFT CORP
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