CN111113081A

CN111113081A - Processing method of annular groove with angle

Info

Publication number: CN111113081A
Application number: CN201911289177.7A
Authority: CN
Inventors: 王勇杰; 麻丽红; 王永飞; 罗远锋; 宛春博; 陈刚
Original assignee: Beijing Power Machinery Institute
Current assignee: Beijing Power Machinery Institute
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-05-08

Abstract

The invention provides a processing method of an annular groove with an angle, which can reduce the requirement on a processing machine tool and reduce the processing cost. According to the machining method, the machining angle is corrected by the tool, a five-axis machine tool is not required for machining, the requirement on the machine tool is lowered, and the machining cost is lowered. For a product to be processed with larger length and angle, the processing part is inverted, so that the quality of the processed surface is better, and the service life of the processing cutter is prolonged.

Description

Processing method of annular groove with angle

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a machining method of an annular groove with an angle.

Background

The annular groove structure with the angle belongs to a special structure in an aerospace engine and is an important butt joint structure for starting connection. As shown in fig. 1, the angled annular groove is disposed on the outer circumference of the product, and the end face of the annular groove forms an angle of 3 ° with the horizontal. According to the characteristics of the structure of the part, the processing of the annular groove with the angle is realized by adopting a five-axis numerical control machine milling method, and the cutter is vertical to a processing surface through the linkage of a main shaft of a machine tool A, C. The existing machining method adopting the five-axis numerical control machine tool for machining can meet the use requirement of the machined annular groove structure with the angle, but the five-axis numerical control machine tool is expensive in price and high in machining cost.

In addition, due to the fact that the annular groove structure with the angle is poor in rigidity, when the length of a product to be machined is large, vibration is large during machining due to the fact that the distance between a machining part and a clamping part is long, machining surface quality is poor, the service life of a machining cutter is shortened due to the fact that vibration affects, and cutter cost is high.

Disclosure of Invention

In view of this, the invention provides a method for processing an annular groove with an angle, which can reduce the requirement on a processing machine tool and reduce the processing cost.

In order to achieve the above object, the processing method of the angled annular groove of the present invention for processing the angled annular groove at the outer circumference of the product includes the steps of:

step 1, designing a tool with the same inclination angle as the annular groove with the angle, wherein two opposite surfaces of the tool are a complementary front surface and a fixed surface respectively, the complementary front surface is an inclined surface, and the inclination angle is the same as the inclination angle of the annular groove with the angle; the fixed surface is a plane;

step 2, fixing a surface piece tool on a workbench through the tool, pressing the inclined end surface of the annular groove with the angle on the compensation front surface of the tool, and compensating the feed track of the machine tool into a horizontal track by utilizing the compensation surface of the tool;

and 3, processing the product to be processed along the corrected track by using a four-axis machine tool to obtain the annular groove with the angle.

And clamping the end to be processed of the product on a machine tool if the length of the product to be processed is greater than a set value and the end to be processed can meet the clamping condition.

Has the advantages that:

(1) according to the machining method, the machining angle is corrected by the tool, a five-axis machine tool is not required for machining, the requirement on the machine tool is lowered, and the machining cost is lowered.

(2) For a product to be processed with larger length and angle, the processing part is inverted, so that the quality of the processed surface is better, and the service life of the processing cutter is prolonged.

Drawings

FIG. 1 is a schematic view of an angled annular groove configuration;

FIG. 2 is a schematic view of the present invention, in which the angle of the processing portion is corrected to be horizontal by the tool.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

The angle is corrected through the tool, the requirement on a machining tool is reduced, and the four-axis machine tool scheme can be used for machining. In order to reduce the requirement of the machine tool, it is necessary to offset the influence of the machining angle, and a tool having the same angle as the part is designed, and the machining angle is corrected to be horizontal by the tool, as shown in fig. 2. The invention relates to a processing method of an annular groove structure with an angle, which comprises the following steps:

step 1, designing a tool with the same inclination angle as the annular groove with the angle, namely, designing one side end face of the tool to be an inclined plane, and enabling the inclination angle (the included angle between the inclined plane and the horizontal plane) of the inclined plane to be the same as the inclination angle of the annular groove to be processed, so that the inclined end face is a correction surface; the surface of the tool opposite to the inclined end surface is a plane and is used as a fixing surface;

step 2, fixing the tool on a workbench through a fixing surface of the tool, pressing the end surface of a product (a product with an angular annular groove to be processed) on the compensation surface of the tool, and compensating the feed track of the machine tool into a horizontal track by utilizing the compensation surface of the tool; the height of the tool is required to avoid interference with the workbench during machining;

and 3, machining the to-be-machined part of the product along the corrected track by using a four-axis machine tool.

Further, if treat that the product length of processing is great and treat that the processing end can realize the clamping, then invert the processing position, treat the processing end clamping on the lathe with the product soon, make the processing position of taking angle annular groove be close to the clamping position from this, increase the rigidity of processing man-hour, reduce the vibration of processing man-hour, improve the processing surface quality.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing method of an annular groove with an angle is used for processing the annular groove with the angle on the outer circumference of a product, and is characterized by comprising the following steps:

2. The method for machining an annular groove with an angle according to claim 1, wherein if the length of the product to be machined is greater than a set value and the end to be machined can meet a clamping condition, clamping the end to be machined of the product on a machine tool.