Automobile motor press-fitting clamp

Abstract

The application provides an automobile motor press-fitting clamp, which comprises a cylinder mounting plate, a clamping jaw cylinder arranged on the cylinder mounting plate, a jig for positioning an iron core stator, a plurality of first steps arranged on the outer side of the jig and corresponding to silicon steel sheets on the stator, three grooves arranged on the axis of the jig as a center line, three clamping jaws fixedly arranged on the output end of the clamping jaw cylinder, the clamping jaws being arranged in the grooves, two second steps arranged on the outer side of the clamping jaws and corresponding to the size of the shell and the inner wall of the stator, and a press-fitting positioning pin for limiting the press-in height of the stator when the press-fitting clamp is pressed into the shell of the stator. The application guarantees the coaxiality and height requirement of the stator or the rotor and the shell, realizes automatic production and high-precision assembly, solves the problems of poor coaxiality of the product, frequent scraping of the inner wall of the motor shell and high product rejection rate caused by the product precision and the error of the jig.

Description

Technical Field

[0001] This invention relates to the field of automation equipment technology, and in particular to a press-fit fixture for automotive motors. Background Technology

[0002] In the rapidly developing new energy vehicle market, the "IPB" braking system, or "Intelligent Integrated Braking System," is being widely adopted, with models from domestic brands such as Roewe, NIO, and BYD already equipped with it. IPB is an electronically controlled braking system that uses an electric motor to assist braking instead of the traditional vacuum system, resulting in faster response and more precise control. However, in the stator production of IPB systems, assembly work can account for approximately 70% of the workload. Assembly is a process that relies heavily on manual labor. Due to the complexity and diversity of assembly technology, automation is not easily achieved. Therefore, improving labor efficiency, product quality, reducing production costs, and increasing economic benefits to adapt to fierce market competition has become an urgent problem for manufacturers.

[0003] Currently, the pressing process for automotive brake housings and stators involves using a fixture to position the housing and stator or rotor, with manual assistance in loading and unloading to press the stator into the housing. This method suffers from drawbacks such as fixture machining positioning errors, product errors in the housing and stator materials, manual loading errors, high labor intensity for workers, and low production efficiency. Furthermore, it cannot guarantee the coaxiality requirements during the pressing process. Therefore, there is an urgent need to provide an automotive motor pressing fixture for picking up and pressing stator housings and stators. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems by proposing a press-fit fixture for automotive motors. This fixture enables the assembly of the housing and the stator or rotor, ensuring the coaxiality and height requirements of the stator or rotor with the housing. It also enables automated production and high-precision assembly, solving the problems of poor product coaxiality and frequent scratching of the inner wall of the motor housing due to errors in product precision and fixtures, resulting in a high product scrap rate.

[0005] This invention provides an automotive motor press-fitting fixture, comprising:

[0006] Cylinder mounting plate;

[0007] A gripper cylinder is mounted on the cylinder mounting plate.

[0008] A jig is used for positioning the iron core stator. Its outer side is provided with multiple first steps corresponding to the silicon steel sheets on the stator. The jig is provided with three grooves evenly distributed along its axis as the center line.

[0009] The stator core gripper consists of three grippers fixedly installed at the output end of the gripper cylinder. The stator core grippers are evenly distributed in the groove. The outer side of the stator core gripper is provided with two second steps that are adapted to the dimensions of the outer shell and the inner wall of the stator.

[0010] The press-fit locating pin is located on the outside of the stator core clamp and is used to limit the press-fit height of the stator when the press-fit fixture is pressed into the stator housing.

[0011] Preferably, it also includes a servo cylinder, a quick-change system interface disposed at the output end of the servo cylinder, and a conversion interface connection plate adapted to the quick-change system interface. The quick-change system interface is used for pneumatic control unlocking and fixing of the cylinder mounting plate and the conversion interface connection plate.

[0012] Preferably, the cylinder mounting plate is provided with a protective mechanism on one side of the gripper cylinder to prevent the gripper cylinder from bearing pressure.

[0013] Preferably, the protective structure includes a plurality of connecting rods disposed on the cylinder mounting plate and a pressure plate disposed at the other end of the connecting rods. The plurality of connecting rods are provided with a space to accommodate the gripper cylinder, and the pressure plate is provided with a through hole in the middle for the stator core gripper to pass through.

[0014] Preferably, an insulating guide plate is provided on the side of the pressure plate near the stator core clamp.

[0015] Preferably, the press-fit positioning pins are three evenly distributed on the pressure plate.

[0016] Preferably, the gripper cylinder is provided with a pneumatic-electric conversion interface.

[0017] Advantages and beneficial effects of the present invention:

[0018] This invention proposes an automotive motor press-fit fixture. Before press-fitting the motor housing and stator, the fixture uses the axis of the press-fitting jig as a reference. This ensures the accuracy of the press-fitting fixture while maintaining the coaxiality requirement between different batches of products. It solves the problem of poor coaxiality and frequent scratching of the inner wall of the motor housing due to product accuracy and jig errors during the press-fitting process, leading to a high scrap rate. This invention satisfies the accuracy tolerance requirements of different batches of products and consistently ensures the coaxiality and perpendicularity of the motor housing and stator.

[0019] This invention relates to a press-fit fixture used in automated assembly equipment for automotive brake motor housings and stators. It is used for picking up and pressing stator housings and stators, and can also be applied to the automated press-fitting process of automotive brake motor housings and rotors, or similar cylindrical housings and bushings or shafts, achieving automated production and high-precision assembly. This invention improves the positioning accuracy during motor housing and stator assembly, significantly enhancing product quality, reducing defect rates, ensuring product precision requirements, and improving overall product quality. It also effectively reduces equipment downtime, greatly increases production efficiency, and reduces product scrap rates. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the press-fit fixture of the present invention;

[0022] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 4 for Figure 3 A partial schematic diagram of BB in the embodiment;

[0024] Figure 5 This is a schematic diagram of the fixture of the present invention;

[0025] Among them, 1-conversion interface connecting plate, 2-cylinder mounting plate, 3-fixture, 31-first step, 32-groove, 4-stator core clamp, 41-clamp, 42-second step, 5-pressure plate, 6-insulating guide plate, 7-connecting rod, 8-press-fit positioning pin, 9-pneumatic-electric conversion interface, 10-clamp cylinder, 11-quick-change system interface, 12-stator, 13-outer shell, 14-servo pressure cylinder. Detailed Implementation

[0026] refer to Figures 1 to 5This invention provides an automotive motor press-fit fixture comprising: a cylinder mounting plate 2, a gripper cylinder 10, a jig 3, a stator core gripper 4, and a press-fit positioning pin 8. The cylinder mounting plate 2 is used for the fixed installation of the gripper cylinder 10, and the cylinder mounting plate 2 is connected to a servo press cylinder 14. The gripper cylinder 10 is mounted on the cylinder mounting plate 2; the fixture 3 is used for positioning the stator 12, and its outer side is provided with multiple first steps 31 corresponding to the silicon steel sheets on the stator 12. The fixture 3 is provided with three grooves 32 evenly distributed along its axis as the center line; the stator core gripper 4 consists of three grippers 41 fixedly mounted on the output end of the gripper cylinder 10. The stator core grippers 4 are evenly distributed in the grooves 32. The outer side of the stator core gripper 4 is provided with two second steps 42 that are adapted to the dimensions of the outer shell 13 and the inner wall of the stator 12; the first steps 31 and the second steps 42 are used by the servo cylinder 14 to press the stator 12 into the outer shell 13 to bear the normal pressure, ensuring the accuracy of the stator 12 pressing and ensuring the concentricity requirement of the two second steps 42. The pressing positioning pin 8 is provided on the outer side of the stator core gripper 4 and is used to limit the pressing height of the stator 12 when the pressing fixture is pressed into the outer shell 13 to ensure the tolerance requirement.

[0027] In one embodiment, it also includes a servo cylinder 14, a quick-change system interface 11 disposed at the output end of the servo cylinder 14, and a conversion interface connection plate 1 adapted to the quick-change system interface 11. The quick-change system interface 11 is used for pneumatic control unlocking and fixing of the cylinder mounting plate 2 and the conversion interface connection plate 1, and is used to realize quick change of the pressing fixture when pressing different products, saving changeover time.

[0028] In one embodiment, the cylinder mounting plate 2 is provided with a protective mechanism on one side of the gripper cylinder 10 to prevent the gripper cylinder 10 from bearing pressure. The protective mechanism is used to prevent the gripper cylinder 10 from being subjected to force. The protective structure includes a plurality of connecting rods 7 provided on the cylinder mounting plate 2 and a pressure plate 5 provided at the other end of the connecting rods 7. The plurality of connecting rods 7 are provided with a space to accommodate the gripper cylinder 10, and the pressure plate 5 is provided with a through hole in the middle for the stator core gripper 4 to pass through.

[0029] In one embodiment, an insulating guide plate 6 is provided on the side of the pressure plate 5 near the stator core clamp 4 to prevent electrical conductivity during the pressing process.

[0030] In one embodiment, the press-fit positioning pins 8 are three evenly distributed on the pressure plate 5, used to limit the press-fit height of the stator 12 when the press-fit fixture is pressed into the housing 13, so as to ensure the tolerance requirements.

[0031] In one embodiment, the gripper cylinder 10 is provided with a pneumatic-electric conversion interface 9, which is used to realize the electrical control of the gripper cylinder 10 and is responsible for converting the air inlet and outlet of the gripper cylinder 10 and the external electrical signal of the cylinder to the external interface.

[0032] Advantages and beneficial effects of the present invention:

[0033] This invention proposes an automotive motor press-fit fixture. Before press-fitting the motor housing 13 and stator 12, the fixture uses the axis of the press-fitting jig 3 as a reference. Under the premise of ensuring the accuracy of the press-fitting fixture, it meets the requirement of consistent accuracy error between different batches of products and ensures the coaxiality of the motor housing 13 and stator 12. This solves the problem of poor coaxiality of the product due to the accuracy of the product and the error of the jig 3 during the press-fitting process, which often leads to scratches on the inner wall of the motor housing 13 and a high scrap rate. It meets the accuracy error of different batches of products and ensures the coaxiality and perpendicularity of the motor housing 13 and stator 12.

[0034] This invention relates to a press-fit fixture used in an automated assembly equipment for automotive brake motor housings 13 and stators 12. It is used for picking up and pressing the housings 13 and stators 12, and can also be applied to the automated press-fitting process of automotive brake motor housings 13 and rotors, or similar cylindrical housings 13 and bushings or shafts, achieving automated production and high-precision assembly. This invention improves the positioning accuracy during the assembly of motor housings 13 and stators 12, significantly improving product quality, reducing defect rates, ensuring product precision requirements, and enhancing overall product quality. It also effectively reduces equipment downtime, greatly improves production efficiency, and reduces product scrap rates.

[0035] The technical features in the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An automotive motor press fitting jig characterized by comprising: It includes: A cylinder mounting plate; A clamping jaw cylinder arranged on the cylinder mounting plate; A jig for positioning the core stator, the outer side of which is provided with a plurality of first steps corresponding to the silicon steel sheets on the stator, and the jig is provided with three grooves evenly distributed along its axis as the center line; A stator core clamping jaw, which is three clamping jaws fixedly installed on the output end of the clamping jaw cylinder, the stator core clamping jaw is evenly arranged in the groove, and the outer side of the stator core clamping jaw is provided with two second steps corresponding to the size of the shell and the inner wall of the stator; A press-fit positioning pin arranged on the outer side of the stator core clamping jaw for limiting the pressing height of the stator when the press-fit clamp is pressed into the stator shell.

2. The automotive motor press fitting jig according to claim 1, characterized by: It also includes a servo cylinder, a quick change system interface arranged on the output end of the servo cylinder, and a conversion interface connecting plate matched with the quick change system interface, the quick change system interface is used for the pneumatic control unlocking and fixing of the cylinder mounting plate and the conversion interface connecting plate.

3. The automotive motor press fitting clamp according to claim 1, characterized in that: The cylinder mounting plate is provided with a protection mechanism on one side of the clamping jaw cylinder to prevent the clamping jaw cylinder from being pressed.

4. The automotive motor press fitting jig according to claim 3, characterized by: The protection mechanism includes a plurality of connecting rods arranged on the cylinder mounting plate and a pressure plate arranged on the other end of the connecting rod, a plurality of the connecting rods are provided with a space for accommodating the clamping jaw cylinder, and the pressure plate is provided with a through hole for the stator core clamping jaw to pass through.

5. The automotive motor press fitting clamp according to claim 4, characterized in that: The pressure plate is provided with an insulating guide piece on the side close to the stator core clamping jaw.

6. The automotive motor press fitting clamp according to claim 4, characterized in that: The press-fit positioning pin is three evenly arranged on the pressure plate.

7. The automotive motor press fitting clamp according to claim 1, characterized in that: The clamping jaw cylinder is provided with a gas-electric conversion interface.

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