CN104759670A - Machining method for titanium alloy thin wall double-tab part - Google Patents

Abstract

The invention provides a machining method for a titanium alloy thin wall double-tab part. The part contains parallel double tabs and a web arranged at the base parts of the tabs, wherein the tabs and the web are in a non-right-angle relation; a combined milling cutter is arranged and is formed by connecting three disc milling cutters and gaskets among the milling cutters in series by a central shaft; a part is clamped on a horizontal milling machine through a splicing milling tool so that the machining of tab groove cavities and the outer sides of the tabs is finished; and one angle opening milling cutter and one angle closing milling cutter are used for machining residues of opened angles and closed angles of the outer sides of the tabs of the part.

Description

A kind of processing method of titanium alloy thin wall ears sheet part

Technical field

The application relates to the manufacture of airplane parts, specifically a kind of processing method of titanium alloy thin wall ears sheet part.

Background technology

In field of machining, titanium alloy material has the advantages that other metal materials cannot have: specific strength is high, and heat resistance is high, anticorrosive good.Particularly maximum bottleneck processed by titanium alloy thin wall ears sheet class part is that the processing of material difficulty, dimensional accuracy and Geometrical Tolerance Principle are high.Usually on plain-milling machine or numerical control machining center, adopt cylindrical bar milling cutter cutter to process, and in actual production process, for special ears chip architecture, when especially spending with dihedral angle, when auricle spacing, auricle flatness and wall thickness require strict simultaneously, conventional machining method and cutter cannot ensure.Therefore, design a kind of processing method of titanium alloy thin wall ears sheet class part, greatly can facilitate actual machining, better can ensure the designing requirement of part simultaneously.

Summary of the invention

The object of the application is the processing method providing a kind of titanium alloy thin wall ears sheet part, and this part has parallel ears sheet and the web of auricle base portion, and be on-right angle relation between auricle and web, processing method is as follows:

1) cutter block is had, the pad be connected in series between three wire rod quality and milling cutter by central shaft combines, the thickness of the middle milling cutter of this cutter block mates with the vallecular cavity between auricle, the middle spacer thickness of milling cutter both sides and the consistency of thickness of part auricle, the milling cutter of both sides is for processing the outside of two auricles, and the radius of each milling cutter is less than the distance of auricle peak to web;

2) by assembled milling tool by parts fixation on horizontal milling machine, adjustment part clamping angle, the auricle of part is mated with the direction of feed of cutter block, completes the processing outside auricle vallecular cavity and auricle;

3) again by horizontal for the web of part clamping on normal vertical miller, adopt an angle of release milling cutter, the knife edge angular of this angle of release milling cutter mates with the angle of release outside auricle, the remnants of angle of release outside processing parts auricle; Adopt one and close angular cutter, this knife edge angular and auricle angle of closing outside another closing angular cutter is mated, and processing parts auricle closes the remnants at angle outside another.

The beneficial effect of the application is: 1) by cutter block once by machine-shaping outside the vallecular cavity of auricle and auricle, avoid ears sheet and can not dehisce or remain silent in process, ears sheet uniform wall thickness; 2) ears sheet base angle remnants then use angle milling cutter complete on normal vertical miller, improve the machining accuracy of part.

Below in conjunction with embodiment accompanying drawing, the application is described in further detail:

Accompanying drawing explanation

Fig. 1 is the signal of thin-walled ears sheet design of part

The structural representation of Fig. 2 cutter block

Fig. 3 ears sheet processing signal

Processing signal remaining outside Fig. 4 ears sheet

Number description: 1 web, 2 closes angle, 3 auricles, 4 vallecular cavities, 5 angle of releases, 6 central shafts, 7 first milling cutters, 8 second milling cutters, 9 the 3rd milling cutters, 10 pads, 11 milling tools, 12 angle of release milling cutters, 13 close angular cutter

Detailed description of the invention

See accompanying drawing, the part of embodiment is a titanium alloy ears sheet part, and be non-right-angle relationship between the auricle 3 of part and web 1, auricle and web side angle are angle of release 5, and angle of release also claims obtuse angle, and opposite side angle, for closing angle 2, closes angle and also claims acute angle.In order to high-precision processing auricle, the application adopts a cutter block, this cutter block is by the pad 10 between the first milling cutter 7, second milling cutter and the 3rd milling cutter 9 and milling cutter, be cascadedly combined by convenience center axle 6, the second milling cutter 8 i.e. middle thickness of milling cutter mates with the vallecular cavity 4 between auricle, the vallecular cavity of auricle must not be greater than, preferably and the consistency of thickness of vallecular cavity, it is specifically intended that the radius of each milling cutter is less than the distance of auricle peak to web, in order to avoid add the web chewing part man-hour; During processing auricle, preferably there is an auxiliary milling tool 11, this milling tool 11 is wedge structures, its locating surface is an inclined-plane, by milling tool 11 by parts fixation on horizontal milling machine, adjustment part clamping angle, the auricle 3 of part is mated with the direction of feed of cutter block, as shown in Figure 3, the processing outside auricle vallecular cavity and auricle is completed; The remnants of the angle, outside of following processing auricle 3 and web 1, by the horizontal clamping of web 1 of part on normal vertical miller, adopt an angle of release milling cutter 12, the knife edge angular of this angle of release milling cutter 12 mates with the angle of release 5 outside auricle, the remnants of angle of release outside processing parts auricle; Adopt one and close angular cutter 13, this knife edge angular and auricle angle 2 of closing outside another closing angular cutter 13 is mated, and processing parts auricle closes the remnants at angle outside another, as shown in Figure 4.

Claims (1)

1. a processing method for titanium alloy thin wall ears sheet part, this part contains parallel ears sheet and the web of auricle base portion, is on-right angle relation, it is characterized in that between auricle and web:

1) cutter block is had, the pad be connected in series between three wire rod quality and milling cutter by central shaft combines, the thickness of the middle milling cutter of this cutter block mates with the vallecular cavity between auricle, the middle spacer thickness of milling cutter both sides and the consistency of thickness of part auricle, the milling cutter of both sides is for processing the outside of two auricles, and the radius of each milling cutter is less than the distance of auricle peak to web;

2) by assembled milling tool by parts fixation on horizontal milling machine, adjustment part clamping angle, the auricle of part is mated with the direction of feed of cutter block, completes the processing outside auricle vallecular cavity and auricle;

3) again by horizontal for the web of part clamping on normal vertical miller, adopt an angle of release milling cutter, the knife edge angular of this angle of release milling cutter mates with the angle of release outside auricle, the remnants of angle of release outside processing parts auricle; Adopt one and close angular cutter, this knife edge angular and auricle angle of closing outside another closing angular cutter is mated, and processing parts auricle closes the remnants at angle outside another.