CN110315156B

CN110315156B - Calibration and clamping device of slow-speed wire-moving machine tool

Info

Publication number: CN110315156B
Application number: CN201910538292.7A
Authority: CN
Inventors: 王晖; 杨滨涛
Original assignee: AECC Guizhou Liyang Aviation Power Co Ltd
Current assignee: AECC Guizhou Liyang Aviation Power Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2021-01-22
Anticipated expiration: 2039-06-20
Also published as: CN110315156A

Abstract

The invention discloses a calibrating and clamping device of a slow-speed wire-moving machine tool, which comprises a disc (1), wherein at least one end face of the disc (1) is provided with a plurality of square grooves, the center of the disc (1) is provided with a threaded through hole, the end face of the disc (1) is provided with a connecting threaded hole on the circumference taking the center of the disc (1) as the circle center, two mutually vertical side edges of the square grooves are respectively parallel to a pair of mutually vertical diameter lines on the end face of the disc (1), and at least one surface of the circumferential surface of the inner side of each square groove is equal to a calibrating angle with the end face of the disc (1). The invention has simple structure, high efficiency and convenient operation, and realizes the integration of calibration and clamping.

Description

Calibration and clamping device of slow-speed wire-moving machine tool

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a calibrating and clamping device for machining a mortise on a CUT200Dedicated machine tool.

Background

At present, a CUT200Dedicated machine tool of the company is a special slow-moving wire machine tool for processing the first mortise in China. In the field of high-temperature alloy and powder high-alloy material mortise machining, developed countries in Europe and America have adopted a slow wire-moving machining technology to be applied to engine turbine disc mortises, but when the mortises are machined, the design and the manufacture of a calibrating and clamping device are time-consuming and labor-consuming, the working efficiency is low, a calibrating device and a clamp are required to be designed and manufactured when parts with different part numbers are machined, the machining cost is high, and the machining time is long.

Disclosure of Invention

The invention aims to provide a calibrating and clamping device of a slow-speed wire-moving machine tool, which has the advantages of simple structure, high efficiency and convenience in operation, and realizes the calibration and the clamping integrally.

Engine turbine disk mortises connect key components of the blades. The tongue and groove shape of each disc is different, the angle is different. In order to make the machine tool understand the relationship between the electrode wire position and the part mortise position, a calibration distance measurement must be carried out, and the process is called slow-moving wire measuring disc. And in the process of correcting and ranging, the angle is corrected by a measuring head and read into the machine tool. A matched clamp is needed when the turbine disc mortise is machined, but the axis of the clamp needs to be concentric with the slow-moving wire measuring disc. Therefore, the structure of the tool is complex, the time period for manufacturing the clamp is long, and the position relation between the clamp and the slow-moving wire measuring disc needs to be corrected during clamping.

The technical scheme adopted by the invention is as follows:

a calibration and clamping device of a slow-moving wire machine tool comprises,

the disc, seted up a plurality of square grooves on at least one terminal surface of disc, threaded through-hole is opened at the disc center, and it has connecting screw hole to open on the disc terminal surface and use the disc center as the circumference of centre of a circle, two mutually perpendicular sides of square groove are on a parallel with a pair of mutually perpendicular's diameter line on the disc terminal surface respectively, and at least one surface equals the calibration angle with the disc terminal surface in the inslot side circumferential surface of square groove. The four vertexes of the square groove determine the plane coordinates so as to facilitate the correction of the distance, and the included angles between the circumferential surface in the square groove and the end surface of the disc are used for correcting the angle of the mortise.

Further, as an axial clamping and compressing mode, the calibrating and clamping device further comprises a cover plate, a bolt and a nut, wherein a through hole is formed in the cover plate, the bolt penetrates through the through hole in the cover plate and is connected with the threaded through hole of the disc, and the nut is matched with the bolt. The end face of the turbine disc is pressed through the cover plate, and the tightness degree of the cover plate pressing is adjusted through the nuts.

Further, as another axial clamping and compressing mode, the calibrating and clamping device further comprises a pressing plate and a screw rod, the screw rod is arranged in the connecting threaded hole of the disc, and the pressing plate is in threaded connection with the screw rod. When the end face of the turbine disc cannot be pressed by using one cover plate, the end face is pressed by adopting a plurality of small pressing plates along the circumferential direction of the turbine disc.

Further, the disc is in threaded connection with a main shaft of a machine tool chassis.

Furthermore, the square grooves on the upper end surface and the lower end surface of the disc are distributed differently.

Further, the disc is made of stainless steel.

The invention is designed according to the characteristics of the turbine discs, concentric holes are formed in the middles of all the turbine discs, and the slow wire cutting belongs to stress-free machining, so that the tool is different from a common tool in the design idea, not only is the clamping and positioning function met, but also the wire electrode is skillfully avoided, and the close distance between the upper nozzle and the lower nozzle and a part is kept. Therefore, the invention adopts an axial clamping and positioning mode.

Compared with the prior art, the correcting and clamping integrated device combines the traditional correcting and clamping which are separately carried out, the correcting and clamping are carried out on the disc, and the turbine discs with eight different angles can be processed by using the square groove at one time, so that the history that one fixture and one correcting and measuring disc are needed for processing one part number of the turbine disc mortise in the prior art is avoided, the processing cost and the fixture processing period are reduced, and the processing efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of the end face of a disk;

FIG. 2 is a sectional view of the combination of the disk with the bolt and nut, corresponding to section D-D of the disk of FIG. 1;

fig. 3 is a cross-sectional view of the cover plate.

Detailed Description

The technical solution of the present invention is further explained below with reference to the accompanying drawings, but the claimed protection scope is not limited to the above.

The main part of rectifying clamping device is disc 1, seted up a plurality of square grooves on at least one terminal surface of disc 1 (in order to improve the availability factor, also can two terminal surfaces all process different square grooves), threaded through-hole is opened at disc 1 center, it has connecting screw hole to open on disc 1 terminal surface and on the circumference that uses disc 1 center as the centre of a circle, two mutually perpendicular sides of square groove are on a pair of mutually perpendicular's diameter line on being on a parallel with disc 1 terminal surface respectively, at least one surface equals the calibration angle with disc 1 terminal surface in the inslot side circumferential surface of square groove.

Specifically, the use process of the correction clamping device is as follows:

(1) the square groove on the end face of the disc 1 in the clamping integrated device is machined and corrected according to data in the following table I, and the vertex coordinates and the inner circumferential surface included angle of the square groove on the end face of the disc 1 in the figure 1 correspond to those of the table I.

According to different angles of the turbine disc, corresponding square grooves are processed according to a design drawing, more than eight turbine discs with different angles can be processed by one disc, for example, the square grooves correspond to a table I and letters A-L in the drawing 1, the vertexes of the square grooves correspond to numbers 1-48, a circumferential surface in the groove of the square groove corresponds to an angle of 0 degree (namely perpendicular to the end face of the disc 1) in the table I, 5 degrees, 10 degrees, 12.5 degrees and 14 degrees, and the device can be repeatedly used by using the same turbine disc mortise angle.

Watch 1

(2) The disc 1 in the correcting and clamping device is arranged on a main shaft of a machine tool chassis through a connecting bolt.

(3) The turbine disc is arranged on the disc 1 of the correcting and clamping device through the cover plate 4, the bolts 2 and the nuts 3, and the turbine disc can be machined after being aligned and clamped.

(4) When the turbine disc is not suitable to be compressed by the cover plate 4, four rectangular pressing plates can be adopted to be compressed along the circumferential direction of the turbine disc, the pressing plates are connected into connecting threaded holes in the surface of the disc 1 through screws, and then the parts are corrected and aligned to clamp tightly, so that the processing is convenient and simple.

Claims

1. Calibration and clamping device of walking a lathe slowly, its characterized in that: the fixture is used for machining, calibrating and clamping the turbine disc mortise on the CUT200Dedicated machine tool, and comprises,

the device comprises a disc (1), wherein at least one end face of the disc (1) is provided with a plurality of square grooves, the center of the disc (1) is provided with a threaded through hole, the end face of the disc (1) is provided with a connecting threaded hole on the circumference which takes the center of the disc (1) as the center of a circle, two mutually perpendicular side edges of each square groove are respectively parallel to a pair of mutually perpendicular diameter lines on the end face of the disc (1), at least one surface in the circumferential surface of the inner side of each square groove and the end face of the disc (1) is equal to a calibration angle, the included angle between the circumferential surface and the end face of the disc is used for correcting the angle of a mortise, and four vertexes of each square groove determine a;

the disc (1) is in threaded connection with a main shaft of a machine tool chassis.

2. The calibration and clamping device of the slow-speed wire-moving machine tool according to claim 1, characterized in that: still include apron (4), bolt (2) and nut (3), it has the through-hole to open on apron (4), bolt (2) pass the through-hole on apron (4) and the threaded through-hole of disc (1) is connected, nut (3) match with bolt (2).

3. The calibration and clamping device of the slow-speed wire-moving machine tool according to claim 1, characterized in that: the disc type screw press is characterized by further comprising a press plate and a screw rod, wherein the screw rod is arranged in a connecting threaded hole of the disc (1), and the press plate is in threaded connection with the screw rod.

4. The calibration and clamping device of the slow-speed wire-moving machine tool according to claim 1, characterized in that: the square grooves on the upper end surface and the lower end surface of the disc (1) are distributed differently.

5. The calibration and clamping device of the slow-speed wire-moving machine tool according to claim 1, characterized in that: the disc (1) is made of stainless steel.