CN114055200A

CN114055200A - Special-shaped nozzle lathe fixture

Info

Publication number: CN114055200A
Application number: CN202111411357.5A
Authority: CN
Inventors: 王士文; 姜波; 江万里; 闻学震; 顾佳鑫
Original assignee: Shenyang Aerospace Xinguang Group Co Ltd
Current assignee: Shenyang Aerospace Xinguang Group Co Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-02-18

Abstract

The invention discloses a lathe fixture with a special-shaped nozzle, wherein the nozzle of a workpiece forms an angle with a chassis, an angle seat with a groove and consistent with the angle of the workpiece is fixedly connected with a bottom plate, a balancing weight is fixedly arranged on the bottom plate, and a process ball for correcting the angle of the workpiece is fixedly arranged on the bottom plate. The invention has the advantages that: the invention uses the numerical control turning to replace the five-axis numerical control milling, saves the processing cost and successfully solves the problems of vibration lines and deformation generated on the surface of the special-shaped nozzle of the part. The clamp is provided with the feeler block, so that the problems of long processing alignment time, low processing efficiency and the like are solved, the labor intensity of operators is reduced, the working efficiency and the stability of product processing are improved, and rapidness and accuracy are achieved.

Description

Special-shaped nozzle lathe fixture

Technical Field

The invention relates to a lathe fixture, in particular to a special-shaped nozzle lathe fixture, and belongs to the field of machining.

Background

The thin-wall special-shaped side nozzle turbine cover part is a welded part and consists of an exhaust nozzle and a shell assembly, the machined part is of a special-shaped nozzle structure, the nozzle and the shell form an angle, the distance from the center of the nozzle to the bottom of the shell is a space size, direct measurement can only adopt three coordinates, and one-time clamping machining cannot be realized, direct clamping cannot be realized, and a tool is required to be used for angle adjustment machining. Originally, five-axis milling is adopted, and the nozzle of the part is a thin wall, so that vibration grains and deformation are generated on the surface of the machined part.

The existing similar tool comprises a base, a support ring, a positioning ring and a lifting ring, a group of threaded holes are machined in a part positioning surface, screws are connected with a clamp, and the lathe machining clamping is carried out in an axial tensioning mode so as to obtain good part machining quality and relatively high machining efficiency and meet the clamping requirement in machining of thin-wall deep-cavity ring parts.

The existing tool can only process thin-wall parts with regular shapes, and for thin-wall special-shaped parts, the existing tool has processing defects and cannot process the thin-wall parts.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a special-shaped nozzle lathe fixture which solves the problems of vibration lines and deformation on the surface of a part.

The special-shaped nozzle lathe fixture is characterized in that an angle seat with a groove and consistent with the angle of a workpiece is fixedly connected with a bottom plate, a balancing weight is fixedly installed on the bottom plate, and a process ball for correcting the angle of the workpiece is fixedly installed on the bottom plate.

Further optimizing, the workpiece is fixed on the angle seat through the pressing plate, the bolts and the nuts, the bolts penetrate through the through holes of the pressing plate, and the nuts are connected with the bolts to fix the workpiece on the angle seat.

Further preferably, the bottom of the angle seat is provided with an angle pin.

Further preferably, the angle seat is fixed on the bottom plate through a screw and a cylindrical pin.

Further preferably, a supporting pin is arranged between the bottom plate and the angle seat.

The invention has the advantages that: the invention uses the numerical control turning to replace the five-axis numerical control milling, saves the processing cost and successfully solves the problems of vibration lines and deformation generated on the surface of the special-shaped nozzle of the part. The clamp is provided with the feeler block, so that the problems of long processing alignment time, low processing efficiency and the like are solved, the labor intensity of operators is reduced, the working efficiency and the stability of product processing are improved, and rapidness and accuracy are achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the bottom of the angle seat of the present invention;

FIG. 3 is a schematic view of an angle seat according to the present invention;

FIG. 4 is a schematic view of the bottom plate structure of the present invention;

FIG. 5 is a schematic view of a workpiece structure according to the present invention.

The labels in the figure are: 1-angle seat, 2-bottom plate, 3-screw, 4-cylindrical pin, 5-process ball, 6-counterweight block, 7-workpiece, 8-bolt, 9-nut, 10-pressure plate, 11-supporting pin and 12-angle pin.

Detailed Description

The following further describes a special-shaped nozzle lathe fixture with reference to the attached drawings.

This kind of heterotypic mouth turning attachment, the mouth and the chassis of work piece 7 are the angle, be equipped with the locating hole on the chassis, the angle seat 1 and the bottom plate 2 fixed connection of taking the notched angle unanimous with 7 angles of work piece, angle seat 1 passes through screw 3 and cylindric lock 4 to be fixed on bottom plate 2, balancing weight 6 passes through screw 3 fixed mounting on bottom plate 2, adopt balancing weight 6 to replace the tool setting device, the processing alignment time is long, the low scheduling problem of machining efficiency, the operator intensity of labour has been alleviateed, the stability of work efficiency and product man-hour is improved, thereby reach the rapidization, the accurate. The process ball 5 for correcting the angle of the workpiece 7 is fixedly arranged on the bottom plate 2, and the process ball 5 is used for correcting the angle of the workpiece 7 when the workpiece 7 is machined, so that the working efficiency is improved. The workpiece 7 is fixed on the angle seat 1 through a pressing plate 10, a bolt 8 and a nut 9, the bolt 8 penetrates through a through hole of the pressing plate 10, the nut 9 is connected with the bolt 8 to fix the workpiece 7 on the angle seat 1, and the nut 9 is screwed on the bolt 8 to fix the workpiece 7.

The bottom of the angle seat 1 is provided with an angle pin 12 which is matched with a positioning hole on a chassis of the workpiece 7 to position the workpiece 7. A supporting pin 11 is arranged between the bottom plate 2 and the angle seat 1, and the supporting pin 11 increases the clamping area of the pressure plate 2, so that the workpiece 7 is clamped more firmly and stably.

The working principle and the using process are as follows: when the fixture is used for clamping a base plate 2, a three-jaw chuck is adopted to place a workpiece 7 into a groove of an angle seat 1, an angular relation is determined through an angular pin 12 and positioning holes in the angle seat 1 and the workpiece 7, a nut 9 and a screw 3 are connected with a pressing plate 10, the pressing plate 10 is placed on a supporting pin 11, the workpiece 7 is fixed through screwing the nut 9, a nozzle of the workpiece 7 and a Z shaft of a machining cutter are in a vertical state, and the workpiece 7 is machined at the moment.

The clamp replaces five-axis numerical control milling by using numerical control turning, saves the processing cost and successfully solves the problems of vibration lines and deformation generated on the surface of the special-shaped nozzle of the part. The clamp is provided with the feeler block, so that the problems of long processing alignment time, low processing efficiency and the like are solved, the labor intensity of operators is reduced, the working efficiency and the stability of product processing are improved, and rapidness and accuracy are achieved.

The foregoing shows and describes the general principles, general structure, and advantages of the present invention. It will be understood by those skilled in the art that variations and modifications in size and orientation may be made without departing from the spirit and scope of the invention, which is intended to be protected by the following claims.

Claims

1. The utility model provides a heterotypic mouth turning attachment, the mouth and the chassis of work piece are the angle, its characterized in that: the angle seat with the groove and consistent with the angle of the workpiece is fixedly connected with the bottom plate, the balancing weight is fixedly installed on the bottom plate, and the process ball for correcting the angle of the workpiece is fixedly installed on the bottom plate.

2. The special-shaped nozzle lathe fixture as claimed in claim 1, wherein: the workpiece is fixed on the angle seat through the pressing plate, the bolt and the nut, the bolt penetrates through the through hole of the pressing plate, and the nut is connected with the bolt to fix the workpiece on the angle seat.

3. The special-shaped nozzle lathe fixture as claimed in claim 1, wherein: the bottom of the angle seat is provided with an angle pin.

4. The special-shaped nozzle lathe fixture as claimed in claim 1, wherein: the angle seat is fixed on the bottom plate through a screw and a cylindrical pin.

5. The special-shaped nozzle lathe fixture as claimed in claim 2, wherein: and a supporting pin is arranged between the bottom plate and the angle seat.