CN220051001U - Processing tool for guaranteeing concentricity of support - Google Patents

Abstract

The utility model discloses a processing tool for ensuring concentricity of a bracket, which relates to the field of pump body bracket processing and comprises a pressing plate, a base, reference pins and a bracket, wherein a plurality of pin holes are uniformly formed in the base along the circumferential direction, a reference pin is arranged in each pin hole, the bracket is used for being buckled on the base, each motor end through hole formed in a motor end of the bracket corresponds to the reference pin one by one, and the reference pins extend into the motor end through holes to position the bracket; the base is provided with a boss, the center of the boss is provided with a center hole, the pressing plate penetrates through the support from an opening in the side wall of the support and is supported on the boss, and the pressing plate is fixedly connected with the boss in a detachable mode, so that the two ends of the pressing plate compress the support on the base. According to the utility model, the support is detachably fixed on the base by the pressing plate and the bolts, the three-jaw chuck is used for primary clamping, the clamping is not needed again during subsequent part replacement turning, the step of clamping by shaking the three-jaw chuck each time is omitted, the processing procedure is simplified, and the labor intensity is reduced.

Description

Processing tool for guaranteeing concentricity of support

Technical Field

The utility model relates to the field of pump body support machining, in particular to a machining tool for guaranteeing concentricity of a support.

Background

As shown in FIG. 1, the bracket is a connecting part of the pump body and the motor, and the concentricity of the center circle of the through hole at the motor end of the bracket and the spigot at the pump body end is out of tolerance. When concentricity deviation is too large, the assembly of the pump body end shaft coupler and the motor shaft spline can be influenced, the motor shaft and the pump shaft are not centered, the torque of the pump shaft can be increased, noise and resistance are generated, the power of the motor is increased, the performance is reduced, and the problem is found in the assembly process, so that the production efficiency is reduced.

The existing machining mode is to clamp the outer circle of the support, directly clamp the outer circle of the support motor end by means of a lathe three-jaw chuck, lathe the inner circle of the pump body end, the concentricity of the center circle of 4 through holes of the support motor end and the inner diameter of the support at the pump body end cannot be effectively guaranteed, the influence of the shape of a part, the machining method of a lathe machining worker and the lathe level is relatively large, and machining errors are easily caused to the part. The guarantee to the size of the parts is not strong. And the outer circle is used as a reference for processing the pump body end spigot, so that concentricity of the center circle of the bracket motor end through hole and the pump body end spigot cannot be effectively ensured, and the bracket failure rate is as high as 50%.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides a processing tool for ensuring concentricity of a bracket, which is used for coaxially centering a center circle of a through hole at a motor end of the bracket and the inner diameter of a bracket at a pump body end so as to ensure concentricity.

The utility model aims at being completed by the following technical scheme: the processing tool for guaranteeing concentricity of the bracket comprises a pressing plate, a base, reference pins and a bracket, wherein a plurality of pin holes are uniformly formed in the base along the circumferential direction, a reference pin is arranged in each pin hole, the bracket is used for being buckled on the base, all motor end through holes formed in the motor end of the bracket correspond to the reference pins one by one, and the reference pins extend into the motor end through holes to position the bracket; the base is provided with a boss, the center of the boss is provided with a center hole, the pressing plate penetrates through the support from an opening in the side wall of the support and is supported on the boss, and the pressing plate is detachably connected and fixed with the boss, so that the two ends of the pressing plate press the support on the base.

As a further technical scheme, the upper surface of the boss is flush with the upper opening of the motor end through hole.

As a further technical scheme, a fixing groove is formed in the pressing plate in a penetrating mode, and bolts penetrate through the fixing groove and the central hole to fix the pressing plate on the boss.

As a further technical scheme, the center circle of each pin hole is arranged coaxially with the center hole.

The beneficial effects of the utility model are as follows:

1. the support is detachably fixed on the base by the pressing plate and the bolts, the three-jaw chuck is used for primary clamping, the clamping is not needed again during turning of the subsequent replacement part, the step of clamping by shaking the three-jaw chuck each time is omitted, the processing procedure is simplified, and the labor intensity of a user is reduced;

2. the center hole on the base is concentric with the center circle of each pin hole, so that the concentricity of the center circle of the through hole at the motor end of the bracket and the spigot at the pump body end can be effectively ensured, the quality of the processed product is effectively ensured, and the technical level requirements of turning staff are reduced.

Drawings

Fig. 1 is a schematic diagram of a connection structure of a bracket, a pump body and a motor in the prior art.

Fig. 2 is a schematic diagram of a three-dimensional structure of the bracket and the fixture after assembly.

Fig. 3 is a schematic cross-sectional structure of the bracket and the fixture after assembly.

Fig. 4 is a schematic perspective view of the press plate and the base after being fixed.

FIG. 5 is a schematic cross-sectional view of the platen and base of the present utility model after being secured.

Reference numerals illustrate: a motor 1', a bracket 2', a shaft assembly 3', a pump body 4';

the clamping plate 1, the fixing groove 11, the bolt 2, the base 3, the pin hole 31, the center hole 32, the boss 33, the reference pin 4, the bracket 5, the motor end through hole 51 and the opening 52.

Detailed Description

The utility model will be described in detail below with reference to the attached drawings:

examples: as shown in fig. 2 to 5, the machining tool for ensuring concentricity of the bracket comprises a pressing plate 1, a fixing groove 11, a bolt 2, a base 3, a pin hole 31, a central hole 32, a boss 33, a reference pin 4, a bracket 5, a motor end through hole 51 and an opening 52.

Referring to fig. 4, four pin holes 31 are uniformly formed along the circumferential direction of the base 3, and a reference pin 4 is inserted into each pin hole 31. As shown in fig. 2 and 3, the bracket 5 is fastened on the base 3 with the motor end facing downwards, and four motor end through holes 51 are formed on the motor end of the bracket 5 in one-to-one correspondence with the reference pins 4, so that the reference pins 4 extend into the corresponding motor end through holes 51, and the bracket 5 is positioned on the base 3.

As shown in fig. 4 and 5, a circular boss 33 is disposed at the center of the base 3, a central hole 32 is formed in the center of the boss 33, a plurality of openings 52 (windows) are formed in the side wall of the bracket 5, the pressing plate 1 penetrates into the bracket 5 from the opening 52 on one side of the bracket 5 and then penetrates out of the opening 52 on the other side (i.e. penetrates through the bracket 5), as shown in fig. 3, the pressing plate 1 is further supported on the boss 33, and the upper surface of the boss 33 is flush with the upper opening of the motor end through hole 51. Further, the center circle where the four pin holes 31 are located and the center hole 32 are arranged coaxially (the concentricity of the center circle and the pump body end spigot is guaranteed), a fixing groove 11 is formed in the pressing plate 1 in a penetrating mode, the bolt 2 penetrates through the fixing groove 11 and is fixedly connected with the center hole 32 in a threaded mode, the pressing plate 1 is fixed on the boss 33, and meanwhile two ends of the pressing plate 1 press the support 5 on the base 3.

The clamping process of the utility model comprises the following steps:

a. clamping the base 3 to a three-jaw chuck of a lathe, and inserting the reference pin 4 into a pin hole 31 of the base 3;

b. correspondingly inserting a through hole 51 at the motor end of the bracket 5 into the reference pin 4 to ensure that the inner measuring plane of the bracket 5 is right above;

c. the pressing plate 1 is inserted from the side opening 52 of the bracket 5 to press the planes at the two sides, the bolt 2 is inserted into the central hole 32 to be screwed up, and the two ends of the pressing plate 1 are ensured to fully press the bracket 5;

according to the utility model, the workpiece is clamped for the first time through 3 simple clamping steps, the three-jaw chuck is not required to be moved again for clamping during turning of the subsequent replacement part, and the clamping is completed rapidly through 2 steps for turning. The concentricity of the center circle of the through hole of the bracket motor end and the spigot of the pump body end can be effectively ensured when the fixture is used for clamping and processing, and the fixture is provided with a concentricity reference, so that the processing precision is more reliably ensured. The assembly between the part and the clamp is simple, the operation is simple, and the movement is convenient.

Term interpretation:

and (3) a bracket: connecting part of motor and pump body

And (3) a pump shaft: the motor is connected with the motor by virtue of the coupler, and torque of the motor is transmitted to parts of the impeller;

and (3) a shaft assembly: the pump shaft and the coupler are assembled into an integrated combined part through a hot jacket process;

pump body: the working parts of the submersible electric pump consist of a pump shaft, guide vanes, impellers, tensioning pieces and water outlet bodies.

It should be understood that equivalents and modifications to the technical scheme and the inventive concept of the present utility model should fall within the scope of the claims appended hereto.

Claims (4)

1. Guarantee processing frock of support concentricity, its characterized in that: the device comprises a pressing plate (1), a base (3), reference pins (4) and a bracket (5), wherein a plurality of pin holes (31) are uniformly formed in the base (3) along the circumferential direction, one reference pin (4) is arranged in each pin hole (31), the bracket (5) is used for being buckled on the base (3), all motor end through holes (51) formed in the motor end of the bracket (5) are in one-to-one correspondence with the reference pins (4), and the reference pins (4) extend into the motor end through holes (51) to position the bracket (5); set up a boss (33) on base (3), a centre bore (32) is offered at boss (33) center, clamp plate (1) runs through support (5) from opening (52) on support (5) lateral wall to support on boss (33), clamp plate (1) and boss (33) are fixed through dismantling the connection, make clamp plate (1) both ends compress tightly support (5) on base (3).

2. The tooling for ensuring concentricity of a bracket according to claim 1, wherein: the upper surface of the boss (33) is flush with the upper opening of the motor end through hole (51).

3. The tooling for ensuring concentricity of a bracket according to claim 1, wherein: a fixing groove (11) is formed in the pressing plate (1) in a penetrating mode, and bolts (2) penetrate through the fixing groove (11) and the center hole (32) to fix the pressing plate (1) on the boss (33).

4. The tooling for ensuring concentricity of a bracket according to claim 1, wherein: the center circle of each pin hole (31) is arranged coaxially with the center hole (32).