Biaxial extension motor press fitting device

Abstract

A kind of double-shaft motor press equipment, including height test tooling and motor press tooling, the height test tooling is connected with motor press tooling, motor assembly is placed on the height test tooling, the motor assembly has to be press-packed end, the height test tooling tests and reads the height of the motor assembly to be press-packed end, end cover assembly is placed on the motor press tooling, the end cover assembly is placed on motor assembly, and the motor press tooling is press-packed with end cover assembly and motor assembly.It is accurate to press pack the other side bearing and end cover assembly by setting height test tooling, one side of the motor assembly that has been press-packed is reference, by testing the height of this side and reading down pressure height.This equipment has the advantages of accurate control press force value and height limit, can significantly improve the press precision and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically to a dual-shaft extension motor press-fitting device. Background Technology

[0002] A dual-shaft extension motor is a motor in which the rotor shaft extends from both ends of the motor simultaneously, forming two independent power output ends. It can drive two independent loads at the same time. The patent involves a motor used in a four-cylinder diaphragm electronic vacuum pump. The two ends are strictly coaxial and rotate at the same speed. Therefore, the installation accuracy of the motor is required to be high. Installation deviation can easily cause problems such as vibration, bearing wear failure, and shortened motor life.

[0003] In the manufacturing process of a twin-shaft extension motor, bearing press-fitting is a critical step. During press-fitting, after pressing one side of the bearing and end cover into the motor shaft, the other side bearing (i.e., during final assembly) is also pressed into the motor shaft. However, the lack of support points between the end cover and the bearing outer ring during press-fitting causes deformation of the bearing outer ring under stress, leading to bearing damage. Therefore, the bearings in the assembled end currently use either loose fitting or heat-fitting. However, loose fitting structures are prone to causing abnormal noise from the motor. Heat-fitting, on the other hand, is more difficult. After the end cover is baked, time is required for installing the sealing ring, assembly, and screw fixing. Due to the long turnaround time, it is difficult to ensure that the assembly is in place before the end cover cools down. Furthermore, this process can easily result in no axial clearance in the motor, posing a risk of motor jamming. Therefore, the previous press-fitting method has the following problems:

[0004] 1. Insufficient precision: The loose fit structure has a large gap, which can easily cause abnormal noise from the motor; the heat fitting process makes it difficult to guarantee the gap after assembly, which may cause the motor to jam.

[0005] 2. Low efficiency: The heat-fitting process is complicated and requires specific ovens and baking times, making it impossible to form an efficient assembly line operation.

[0006] 3. Lack of force and height control: Traditional press-fitting equipment usually lacks precise control over the press-fitting force and height limits, which can easily lead to bearing damage or insecure installation. Summary of the Invention

[0007] In view of this, the present invention provides a dual-shaft extension motor press-fitting device.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A dual-shaft extension motor pressing device includes a height testing fixture and a motor pressing fixture, which are communicatively connected. A motor assembly is placed on the height testing fixture, and the motor assembly has a pressing end. The height testing fixture tests and reads the height of the pressing end of the motor assembly. An end cap assembly is placed on the motor pressing fixture, and the end cap assembly is placed on the motor assembly. The motor pressing fixture presses the end cap assembly and the motor assembly together.

[0010] Preferably, the height testing fixture includes a height sensor, a cylinder, and a positioning seat. A height testing station is formed within the positioning seat. The motor assembly is placed within the height testing station. The cylinder is located on one side of the positioning seat. The height sensor is mounted on the cylinder. The cylinder drives the height sensor to move up and down. One end of the height sensor extends towards the motor assembly to test and read the height of the end of the motor assembly to be pressed. The height sensor transmits the test data to the motor pressing fixture.

[0011] Preferably, the motor assembly has a motor shaft, which is coaxially arranged with the height testing station, and a support block is provided at the bottom center of the height testing station, the support block abutting against the bottom end of the motor shaft.

[0012] Preferably, the motor pressing fixture includes a control system, a press, a force sensor, and a pressing head. The control system is connected to the press, the pressing head is mounted on the press, the force sensor is mounted on one side of the press and connected to the pressing head, and the pressing head presses the motor assembly and the end cap assembly on the motor assembly.

[0013] Preferably, the bottom cross-sectional shape of the height testing station on the positioning seat is stepped, and the bottom of the motor assembly abuts against the bottom of the height testing station.

[0014] Preferably, the press includes a press body and a press base, the pressing head is disposed on the press body, the press base is provided with a motor fixing block, the motor fixing block has a positioning groove coaxially disposed with the pressing head, and the motor assembly is placed in the positioning groove.

[0015] The beneficial effects of this invention are as follows: By setting a height testing fixture, using one side of the already press-fitted motor assembly as a reference, the height of that side is tested and the pressing height is read, allowing for precise press-fitting of the bearing and end cover assembly on the other side. This equipment has the advantage of precisely controlling the pressing force and height limit, significantly improving pressing accuracy and efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Appendix Figure 1 This is a schematic diagram of the height testing fixture structure;

[0018] Appendix Figure 2 A cross-sectional view of the height testing fixture;

[0019] Appendix Figure 3 This is a schematic diagram of the motor press-fitting fixture structure. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] This utility model provides the following technical solution:

[0023] As attached Figure 1-3 As shown, this utility model discloses a dual-shaft extension motor press-fitting device, including a height testing fixture 1 and a motor press-fitting fixture 2. The height testing fixture 1 and the motor press-fitting fixture 2 are communicatively connected. A motor assembly 3 is placed on the height testing fixture 1, and the motor assembly 3 has a pressing end 4. The height testing fixture 1 tests and reads the height of the pressing end 4 of the motor assembly 3. An end cap assembly 5 is placed on the motor assembly 3, and the motor press-fitting fixture 2 presses the end cap assembly 5 to the motor assembly 3. Specifically, in this design, by setting up a height testing fixture, using one side of the already press-fitted motor assembly 3 as a reference, the height of this side is tested and the pressing height is read to accurately press the bearing on the other side to the end cap assembly 5. This device has the advantages of accurately controlling the pressing force and height limit, which can significantly improve the pressing accuracy and efficiency.

[0024] Furthermore, the height testing fixture 1 includes a height sensor 6, a cylinder 7, and a positioning seat 8. A height testing station 9 is formed within the positioning seat 8. The motor assembly 3 is placed within the height testing station 9. The cylinder 7 is positioned on one side of the positioning seat 8, and the height sensor 6 is mounted on the cylinder 7. The cylinder 7 drives the height sensor 6 to move vertically. One end of the height sensor 6 extends towards the motor assembly 3 to test and read the height of the end 4 of the motor assembly 3 to be pressed. The height sensor 6 transmits the test data to the motor pressing fixture 2. Specifically, in this embodiment, the height sensor 6 uses a laser rangefinder or displacement sensor, which features high precision and high speed, enabling it to quickly and accurately read the height data of the end 4 of the motor assembly 3 to be pressed. The cylinder 7 drives the height sensor 6 to move vertically, ensuring that the height sensor 6 can accurately contact the end 4 of the motor assembly 3 to be pressed for testing. Simultaneously, the design of the positioning seat 8 allows the motor assembly 3 to be stably placed within the height testing station 9, preventing shaking or displacement during testing and further improving the accuracy of the test.

[0025] Furthermore, the motor assembly 3 has a motor shaft 10, which is coaxially arranged with the height testing station 9. A support block 11 is disposed at the center of the bottom of the height testing station 9, and the support block 11 abuts against the bottom end of the motor shaft 10. Specifically, in this embodiment, the support block 11 is used to support the motor shaft 10, ensuring that the motor shaft 10, as a reference plane, remains horizontal during the test, avoiding eccentricity or tilting, and further improving the accuracy and stability of the test. At the same time, the coaxial structure allows the height sensor 6 to more accurately read the height data of the motor shaft 10 during the test, avoiding errors caused by misalignment. In addition, the close contact between the support block 11 and the bottom end of the motor shaft 10 effectively prevents the motor shaft 10 from shaking during the test, ensuring the reliability of the test results.

[0026] Furthermore, the motor pressing fixture 2 includes a control system 12, a press 13, a force sensor 14, and a pressing head 15. The control system 12 is connected to the press 13, the pressing head 15 is mounted on the press 13, and the force sensor 14 is located on one side of the press 13 and connected to the pressing head. Specifically, in this embodiment, the control system 12 is responsible for controlling the operation of the press 13 to ensure that the press 13 can work according to the preset pressing program. The press 13 provides sufficient pressure to press the end cap assembly 5 onto the motor assembly 3. The force sensor 14 is used to monitor the force changes during the pressing process in real time to ensure that the pressing force is controlled within a preset range, avoiding over-pressure or under-pressure. The pressing head 15 is responsible for accurately placing the end cap assembly 5 onto the motor assembly 3 and pressing it. This design enables the motor pressing fixture 2 to accurately control the pressing force and height limit, further improving the accuracy and efficiency of the pressing. At the same time, the close cooperation and collaborative work between the various components ensures the stability and reliability of the entire pressing process.

[0027] Furthermore, the bottom cross-sectional shape of the height testing station 9 on the positioning base 8 is stepped, and the bottom of the electronic component abuts against the bottom of the height testing station 9. Specifically, in this embodiment, the bottom cross-sectional shape of the height testing station 9 is stepped, a design primarily intended to accommodate motor assemblies 3 of different sizes. The stepped bottom cross-section provides multiple support points, allowing the motor assembly 3 to be placed more stably within the height testing station 9. Simultaneously, the stepped design ensures close contact between the bottom of the motor assembly 3 and the bottom of the height testing station 9, avoiding testing errors caused by gaps. This design not only improves testing accuracy but also enhances the applicability and flexibility of the equipment, enabling the dual-shaft extension motor pressing equipment to adapt to the pressing needs of more types of motor assemblies 3.

[0028] Furthermore, the press 13 includes a press body 16 and a press base 17. The pressing head 15 is disposed on the press body 16, and a motor fixing block 18 is disposed on the press base 17. A positioning groove 19, coaxially aligned with the pressing head 15, is formed on the motor fixing block 18, and the motor assembly is placed within the positioning groove 19. Specifically, in this embodiment, the design of the press base 17 enhances the stability of the press, ensuring that no shaking or displacement occurs during the pressing process. The motor fixing block 18 and the positioning groove 19 further improve the positioning accuracy of the motor assembly 3 during the pressing process. The coaxial alignment of the positioning groove 19 and the pressing head 15 ensures that the pressing head 15 can accurately align with the motor assembly 3, avoiding pressing errors caused by misalignment. This design not only improves the pressing accuracy but also ensures the safety and reliability of the pressing process.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-shaft extension motor press-fitting device, characterized in that: The device includes a height testing fixture and a motor pressing fixture, which are communicatively connected. A motor assembly is placed on the height testing fixture, and the motor assembly has a pressing end. The height testing fixture tests and reads the height of the pressing end of the motor assembly. An end cap assembly is placed on the motor pressing fixture, and the end cap assembly is placed on the motor assembly. The motor pressing fixture presses the end cap assembly and the motor assembly together.

2. The dual-shaft extension motor press-fitting equipment according to claim 1, characterized in that: The height testing fixture includes a height sensor, a cylinder, and a positioning seat. A height testing station is formed within the positioning seat. The motor assembly is placed within the height testing station. The cylinder is located on one side of the positioning seat, and the height sensor is mounted on the cylinder. The cylinder drives the height sensor to move up and down. One end of the height sensor extends towards the motor assembly to test and read the height of the end of the motor assembly to be pressed. The height sensor transmits the test data to the motor pressing fixture.

3. The dual-shaft extension motor press-fitting equipment according to claim 2, characterized in that: The motor assembly has a motor shaft, which is coaxially arranged with the height testing station. A support block is provided at the bottom center of the height testing station, and the support block abuts against the bottom end of the motor shaft.

4. The dual-shaft extension motor press-fitting equipment according to claim 1, characterized in that: The motor pressing fixture includes a control system, a press, a force sensor, and a pressing head. The control system is connected to the press, the pressing head is mounted on the press, the force sensor is mounted on one side of the press and connected to the pressing head, and the pressing head presses the motor assembly and the end cap assembly on the motor assembly.

5. The dual-shaft extension motor press-fitting equipment according to claim 2, characterized in that: The bottom cross-sectional shape of the height testing station on the positioning base is stepped, and the bottom of the motor assembly abuts against the bottom of the height testing station.

6. The dual-shaft extension motor press-fitting equipment according to claim 4, characterized in that: The press includes a press body and a press base. The pressing head is mounted on the press body, and a motor fixing block is mounted on the press base. A positioning groove coaxial with the pressing head is formed on the motor fixing block, and the motor assembly is placed in the positioning groove.

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