Numerical control machining method of mortise chamfering angles

A processing method and tenon-groove technology, which is applied in the processing field of roulette tenon-groove fillets, can solve the problems of high labor intensity for operators, poor chamfering position consistency, and low surface accuracy, so as to solve the problems of low processing efficiency and ensure processing Quality, reduce the effect of labor intensity

Active Publication Date: 2015-06-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of manually grinding and chamfering the mortise and groove, there is no coolant, the surface accuracy is low, the

Method used

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  • Numerical control machining method of mortise chamfering angles
  • Numerical control machining method of mortise chamfering angles
  • Numerical control machining method of mortise chamfering angles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 A numerical control machining method for the chamfering of the straight tenon and groove of the aero-engine wheel

[0037] Its numerical control processing method, steps, such as figure 1 Shown:

[0038] Step 1 analyzes the overall structure of the aeroengine wheel disc of embodiment 1

[0039] figure 2 It is the overall structure of embodiment 1 aeroengine wheel disk, among the figure: A 1 ,A 2 ,A 3 ...A n , B 1 ,B 2 ...B n is the processing sequence of the chamfering positions on both sides; 1 is the tenon groove on the wheel; α is the angle between adjacent tenon grooves.

[0040] image 3 It is the shape and structure of the tenon and groove 1 of the wheel disk in Example 1, and the chamfering position is a non-smooth continuous area: 3 and 4 are respectively the chamfering sides 3 (side A) and 4 (side B) corresponding to both sides of the tenon and groove, and 2 is the 3 Another tongue and groove chamfering edge on the same side;

[0041] F...

Embodiment 2

[0055] Embodiment 2 A numerical control machining method for the chamfering of the oblique tenon and groove of the aero-engine wheel

Embodiment 2

[0056] The main difference between the chamfering position of the tenon and groove in Example 2 and that in Example 1 is: the chamfering position of the tenon and groove in Example 1 image 3 The middle positions 3 and 4 are symmetrical, and the structural dimensions of the chamfering positions of the two end faces of the blisk in Example 1 are the same, while the chamfering positions of the tongue and groove in Example 2 are asymmetrical.

[0057] Figure 11 It is the tongue and groove structure diagram of embodiment 2, Figure 12 It is the structural diagram of the M side chamfering position of the mortise groove of embodiment 2, Figure 13 It is a structural diagram of the chamfering position of the N side of the mortise of the embodiment 2. Each tongue and groove of this embodiment ( Figure 11 The two end faces of M and N) have different structural dimensions, and because the mortise is inclined, both sides of the mortise on the M end face ( Figure 12 position P 1 ,...

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Abstract

The invention discloses a numerical control machining method of mortise chamfering angles. The numerical control machining method comprises the following main steps: analyzing the structural features of an overall wheel disc; selecting a tool, a machine tool and a clamp for numerical control machining, and generating a numerical control machining cutter path of the mortise chamfering angles; sequentially machining chamfering angles on the single side of the single end surface of a wheel disc mortise, and machining chamfering angles on the other side of the same end surface; and after finishing machining of the chamfering angles of the first end surface, machining mortise round angles of the other end surface by turnover. By virtue of a point-milling machining method, firstly, the half position of the required chamfering angle is milled on one end surface of the wheel disc according to the mortise machining order; then, the other half position of the mortise chamfering angle is symmetrically milled according to the machining order; and finally, seamless splicing is performed on the two parts of the mortise chamfering angle. According to the method, the mortise chamfering angle is successfully machined; numerical control milling of the chamfering angles on the complicated structure of the wheel disc mortise is realized by virtue of the five-coordinate machine tool; the consistency of the machining quality and the size of the chambering angles is ensured; the production efficiency is improved; and the labor intensity of operators is greatly alleviated.

Description

Technical field: [0001] The invention relates to mechanical processing technology, in particular to a processing method for rounded corners of mortise and groove of a roulette. Background technique: [0002] As the power plant of the aircraft, the aero-engine directly affects the safety and reliability of the aircraft. Among them, the quality of the engine wheel is of great significance to ensure the safety and reliability of the entire engine and aircraft. [0003] The main failure mode of the engine wheel is the interaction among the modes of low cycle fatigue, deformation overrun, rupture, web buckling, vibration cracking and so on. The machining quality of the mortise and groove of the roulette has a very important influence on the failure and life of the roulette. At present, the domestic CNC machining process for the tenon and groove of the wheel disc is: firstly use the method of broaching to process the tenon and groove, and then grind and chamfer the tenon and gro...

Claims

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Application Information

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IPC IPC(8): B23C3/00
CPCB23C3/00B23C2220/16
Inventor 姚倡锋马陆飞任军学田卫军田荣鑫黄新春武导侠谭靓谢少华
Owner NORTHWESTERN POLYTECHNICAL UNIV
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