CN215091118U

CN215091118U - Special tool for root rounding of inner groove of large generator rotor

Info

Publication number: CN215091118U
Application number: CN202023224812.4U
Authority: CN
Inventors: 赵强
Original assignee: Sichuan College of Architectural Technology
Current assignee: Sichuan College of Architectural Technology
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-12-10
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a large-scale generator rotor inside groove root radius specialized tool, include cutting blade, cutter body, the anti-roll bar that from left to right sets gradually, both ends symmetry is provided with a plurality of to the recess around the cutter body, be provided with in the recess with the nylon guide block, the bilateral symmetry is provided with two pairs of pull rings about the cutter body. The tool can reduce labor intensity, ensure product quality, save working time and avoid damaging the inner surface of the groove.

Description

Special tool for root rounding of inner groove of large generator rotor

Technical Field

The utility model belongs to the technical field of large-scale electrical equipment processing, especially, relate to groove root radius specialized tool in large-scale generator rotor.

Background

The rotor of the large-scale generator is one of important component parts of power generation equipment, the rotor of the generator needs high-precision machining before use, and the machining process comprises a process of rounding the right-angled machining surfaces of the root parts in the A-type groove and the B-type groove on the rotor of the motor. The large-scale electricity generation rotor has 4A type grooves, 28B type grooves, the total length of the two types of grooves is 5080mm, the width of the groove bottom is 28mm, the groove depth of the A type groove is 157mm, the groove depth of the B type groove is 193mm, the inner surfaces of the two types of grooves are finished with finish machining before the rounding process, so that machined surfaces cannot be damaged during rounding, particularly, according to the structural requirement of the electricity generation rotor, the size of a fillet needing to be machined at the root of the inner groove is only 1mm, if a special tool is used for machining on a machine tool, the machine tool needs to be occupied, and after each groove is machined, the workpiece needs to be aligned again, and the method is time-consuming, tedious and uneconomical. In addition to the method of rounding on the machine tool, there is also a method of rounding the root of the rotor inner groove by manual scraping, but the shape uniformity and quality of the rounded root of the inner groove are difficult to ensure, the machined surface is easy to be damaged, and the damaged machined surface is not repaired by any method. Therefore, the utility model provides a large-scale generator rotor inside groove root radius specialized tool adopts this instrument to combine to carry out the radius with the mode of artifical broaching, can greatly reduced intensity of labour, guarantees product quality and saving operating time, improves economic benefits.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be: the special tool for rounding the root of the inner groove of the large generator rotor can reduce labor intensity, ensure product quality, save working time and avoid damaging the inner surface of the groove.

The utility model adopts the technical scheme as follows:

the special tool for rounding the root of the inner groove of the rotor of the large-scale generator comprises a cutting blade, a cutter body and an anti-tilting rod which are sequentially arranged from left to right, wherein a plurality of pairs of grooves are symmetrically arranged at the front end and the rear end of the cutter body, nylon guide blocks are arranged in the grooves, and two pairs of pull rings are symmetrically arranged on the upper surface and the lower surface of the cutter body.

Preferably, the cutting blade and the cutter body are detachably connected.

Preferably, the cutting insert further comprises an insert compression screw, the left end of the insert is provided with a cutter groove matched with the cutting insert, the top of the cutter groove is provided with a screw hole, and the insert compression screw is tightly connected with the cutting insert through the screw hole.

Preferably, the nylon guide block is connected with the cutter body through a screw.

Preferably, the cutting insert is of a convex configuration.

Preferably, the cutter body is made of copper materials.

Preferably, the front end and the rear end of the cutter body are symmetrically provided with 2 pairs of grooves.

Preferably, the pull ring is a pull rope screw, and the pull rope screw is in threaded connection with the cutter body.

The utility model discloses a large-scale generator rotor inside groove root radius specialized tool has following beneficial effect:

1. the utility model discloses a design an instrument according to the characteristics of large-scale generator rotor inside groove root radius process, this kind of instrument simple structure, the preparation is convenient, and is with low costs, workman easy operation.

2. Compare with the processing mode that adopts the lathe to combine special cutter, the utility model discloses greatly reduced intensity of labour when guaranteeing product quality shortens process time, improves economic benefits.

3. At the position that contacts with large-scale electric motor rotor machined surface, the utility model discloses a nylon materials can prevent that large-scale electric motor rotor machined surface from being damaged.

4. The utility model discloses a cutting part has adopted the structural style that movable blade and screw step up, can realize freely changing and the grinding of blade. 5. The utility model has the advantages of the utility model is provided with an anti-roll bar structure, which can prevent the rounding tool from falling down in the broaching process.

Drawings

FIG. 1 is an exploded view of a special tool for rounding the root of an inner groove of a rotor of a large-scale generator;

FIG. 2 is a front view of a special tool for rounding the root of an inner groove of a rotor of a large-scale generator;

fig. 3 is a sectional view a-a of fig. 2.

Wherein, the names corresponding to the reference numbers are:

1-cutting blade, 2-blade hold-down screw, 3-nylon guide block, 4-pull ring, 5-cutter body, 6-anti-roll bar, and 7-screw.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

Example 1

The utility model provides a groove root radius specialized tool in large-scale generator rotor, its structure is as shown in fig. 1-3, including cutting blade 1, cutter body 5, the anti-roll bar 6 that from left to right sets gradually, the both ends symmetry is provided with a plurality of to the recess around the cutter body 5, be provided with in the recess with nylon guide block 3, the two sides symmetry is provided with two pairs of pull rings 4 about the cutter body 5.

The utility model is shown in figures 1-3, and comprises a cutting blade 1, a cutter body 5 and an anti-roll bar 6, wherein the cutting blade 1 can be designed into different shapes according to the structural characteristics of the root part of an inner groove of a rotor; both ends symmetry is provided with a plurality of recess around, through installing nylon guide block 3 in the recess, and nylon guide block 3 replaces tool body and rotor inside groove machined surface direct contact, protects rotor inside groove machined surface. Meanwhile, pull rings 4 are symmetrically arranged on the upper surface and the lower surface of the cutter body 5, a soft rope is sleeved on the pull rings 4 in the cutting process, and the special tool for rounding is driven to work through the tensile force of the soft rope. In order to prevent the special rounding tool from toppling under the pulling force of the soft rope, an anti-toppling rod 6 is connected above the tool body, and the anti-toppling rod 6 is controlled by an operator. The utility model discloses at the in-service operation, 3 people are required to cooperate each other and accomplish inside groove root radius process, and wherein 1 person is responsible for controlling the degree of depth and the angle of cutting into of 6 definite radius cutters of anti-roll bar, and 2 people are responsible for in addition with soft rope at thermal power rotor both ends pulling cutter, and the processing task of rotor inside groove root radius can be accomplished to every inside groove needs 2 ~ 3 times of broaching that come and go. The tool is easy to operate, reduces labor intensity and is high in efficiency when rounding the root of the inner groove of the large motor rotor, and the machined surface of the large rotor is prevented from being damaged by the fact that the nylon fixing block is arranged on the cutter body 5 and is in surface contact with the inner groove. Meanwhile, an anti-tilting rod 6 structure is designed, so that the rounding tool can be prevented from tilting in the broaching process.

Example 2

Based on the above embodiment 1, as shown in fig. 1, the cutting insert 1 is detachably connected to the cutter body 5. In the embodiment, the cutting blade 1 and the cutter body 5 are detachably connected, so that the cutting blade can be freely replaced and ground according to actual processing requirements.

Example 3

Based on the above embodiment 1, as shown in fig. 2, the cutting insert pressing device further includes an insert pressing screw 2, the left end of the cutter body 5 is provided with a cutter groove matched with the cutting insert 1, the top of the cutter groove is provided with a screw hole, and the insert pressing screw 2 is tightly connected with the cutting insert 1 through the screw hole. In the embodiment, a detachable connection mode of the cutter body 5 and the cutting insert 1 is specifically described, that is, a cutter groove matched with the cutting insert 1 is arranged at the left end of the cutter body 5, a screw hole is arranged at the top of the cutter groove, the insert compression screw 2 is tightly connected with the cutting insert 1 through the screw hole, and the cutting insert 1 is compressed in the cutter groove of the tool body by the screwing-in force of the insert compression screw 2 in the connection process; the connection mode has the advantages of simple structure, convenient assembly and disassembly and reliable connection. But the coupling of the cutter body 5 to the cutting insert 1 is not limited to the above-mentioned one.

Example 4

Based on the embodiment 1, as shown in fig. 1 and 3, the nylon guide block 3 is connected with the cutter body 5 through a screw 7. In this embodiment, it is specifically explained that the nylon guide block 3 is connected to the cutter body 5 by a screw 7, specifically: the middle part of the nylon guide block 3 is provided with a first threaded hole, a second threaded hole corresponding to the nylon guide block 3 is arranged in the groove, and the screw 7 penetrates through the first threaded hole and is screwed in the second threaded hole to be connected. However, the connection structure of the nylon guide block 3 and the cutter body 5 is not limited to the above one.

Example 5

Based on the above embodiment 1, as shown in fig. 1, the cutting insert 1 has a convex structure. In the present embodiment, the cutting insert 1 is specifically illustrated as having a convex-shaped configuration. The specific shape structure of the cutting insert 1 may be changed according to the actual working conditions, and is not limited to the above one.

Example 6

Based on the embodiment 1, the cutter body 5 is made of copper material. In the present embodiment, the cutter body 5 is made of a copper material.

Example 7

Based on the above embodiment 1, as shown in fig. 1-3, the front and rear ends of the cutter body 5 are symmetrically provided with 2 pairs of grooves. In this embodiment, specifically expound the symmetry that cutter body 5 front and back end symmetry set up the recess, for 2 pairs, the nylon guide block 3 that corresponds is provided with 4. The number of pairs of grooves is set according to the length of the cutter body 5, and thus, the number of pairs is not limited to 2 pairs.

Example 8

Based on the embodiment 1, as shown in fig. 1-2, the pull ring 4 is a pull-cord screw, and the pull-cord screw is in threaded connection with the cutter body 5. In this embodiment, the connected mode of cutter body 5 and two pairs of pull rings 4 has specifically been elucidated, and pull ring 4 is the stay cord screw promptly, stay cord screw and cutter body 5 threaded connection, it is specific: two pairs of screw holes which are symmetrical up and down are arranged on the upper surface and the lower surface of the cutter body 5 and are respectively connected with 4 stay cord screws, and pull rings 4 are arranged at the heads of the stay cord screws.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.

Claims

1. The special tool for rounding the root of the inner groove of the rotor of the large-scale generator is characterized by comprising a cutting blade, a cutter body and an anti-tilting rod which are sequentially arranged from left to right, wherein a plurality of pairs of grooves are symmetrically arranged at the front end and the rear end of the cutter body, nylon guide blocks are arranged in the grooves, and two pairs of pull rings are symmetrically arranged on the upper surface and the lower surface of the cutter body.

2. The special tool for rounding the root of the inner groove of the rotor of the large-scale generator as claimed in claim 1, wherein the cutting blade is detachably connected with the cutter body.

3. The special tool for rounding the root of the inner groove of the large generator rotor as recited in claim 2, further comprising a blade compression screw, wherein the left end of the blade is provided with a groove matched with the cutting blade, the top of the groove is provided with a screw hole, and the blade compression screw is tightly connected with the cutting blade through the screw hole.

4. The special tool for rounding the root of the inner groove of the rotor of the large-scale generator as claimed in claim 1, wherein the nylon guide block is connected with the cutter body through a screw.

5. The special tool for rounding the root of the inner groove of the rotor of the large-scale generator as claimed in claim 1, wherein the cutting blade is of a convex structure.

6. The special tool for rounding the root of the inner groove of the large-scale generator rotor as claimed in claim 1, wherein the tool body is made of copper material.

7. The special tool for rounding the root of the inner groove of the rotor of the large-scale generator as claimed in claim 1, wherein the front end and the rear end of the tool body are symmetrically provided with 2 pairs of grooves.

8. The special tool for rounding the root of the inner groove of the large generator rotor as recited in claim 1, wherein the pull ring is a pull-cord screw, and the pull-cord screw is in threaded connection with the cutter body.