CN116460561A - A bushing press-fitting mechanism - Google Patents

Abstract

A liner press-fitting mechanism includes a first material moving assembly, a second material moving assembly arranged on one side of the first material moving assembly, and a pressing assembly arranged on one side of the second material moving assembly. The pressing assembly includes a first lifting component arranged on one side of the first material moving component, a pressing pin arranged at the output end of the first lifting component, a second lifting component arranged on a side opposite to the first lifting component, and a thimble arranged at the output end of the second lifting component. The pressing pin is arranged opposite to the thimble. The mechanism provides positioning for the motor rotor through the pressing pins matched with the motor rotor and the abutment, preventing the motor rotor from shifting or swinging during the press-fitting process, and improving the production efficiency and press-fitting accuracy of the device. The bushing press-fitting mechanism does not require manual participation in the whole process, has a high degree of automation, and is suitable for assembly line production.

Description

A bushing press-fitting mechanism

technical field

The invention relates to the technical field of motor assembly, in particular to a bush pressing mechanism.

Background technique

The motor rotor is the rotating part in the motor, so the rotor is an important part of the motor, and its service life often determines the service life of the entire motor. In order to improve the practical life of the rotor, the rotor needs to be pressed into a bushing to prevent wear and facilitate replacement. For example, Chinese patent CN201120007255.2 discloses a press-fitting machine for motor rotor bearings, which consists of three parts: a workbench, a hydraulic cylinder and a press-fit mechanism. The front press plate and the rear press plate of the press-fit mechanism are arranged on both sides of the workbench and connected together. The front surface of the front press plate is fixed with a hydraulic cylinder. The looper has a front pressure sleeve and a rear pressure sleeve respectively, and the front hydraulic pressure head and the rear pressure head withstand the front pressure sleeve and the rear pressure sleeve respectively. The device has a simple structure and reduces the cost of the machine. But it needs manual operation, low degree of automation, waste of human resources, and low production efficiency.

Contents of the invention

In view of this, the present invention provides a bushing press-fitting mechanism to solve the above problems.

A bushing press-fitting mechanism, which is used for press-fitting a motor rotor into a bushing, the shaft center of the motor rotor is pierced with a main shaft, both ends of the main shaft protrude from the motor rotor, one end of the main shaft is provided with a pressure hole, and the other end of the main shaft is provided with a top hole. The bushing pressing mechanism includes a first material moving assembly, a second material moving assembly arranged on one side of the first material moving assembly, and a pressing assembly arranged on one side of the second material moving assembly. The pressing assembly includes a first lifting component arranged on one side of the first material moving component, a pressing pin arranged at the output end of the first lifting component, a second lifting component arranged on the side opposite to the first lifting component, and a thimble arranged at the output end of the second lifting component. The press pin is arranged opposite to the ejector pin, and the maximum circumferential circle area of the press pin and the ejector pin is larger than the maximum circumferential circle area of the press hole and the ejector hole.

Further, the first material moving assembly includes a base plate, a material moving cylinder set at one end of the base plate, two guide rails set on the base plate, a positioning seat set at the output end of the material moving cylinder and slidingly set with the guide rails, and an oil pressure buffer set at the end of the base plate away from the material moving cylinder.

Further, an empty slot is opened on the base plate, and the empty slot corresponds to the press-fit assembly.

Further, a circular groove is opened in the middle section of the positioning seat, and the thimble can pass through the circular groove.

Further, the second material moving assembly includes a two-axis moving part, a moving plate arranged at the output end of the two-axis moving part, at least one lifting slide set on the moving plate, at least one clamping cylinder set at the output end of the lifting slide, and a clamping claw set at the output end of the clamping cylinder.

Compared with the prior art, the bushing press-fitting mechanism provided by the present invention provides positioning for the motor rotor through the pressing pins matched with the motor rotor and the abutment, preventing the motor rotor from shifting or swinging during the press-fitting process, and improving the production efficiency and press-fitting accuracy of the device. The bushing press-fitting mechanism does not require manual participation in the whole process, has a high degree of automation, and is suitable for assembly line production.

Description of drawings

Fig. 1 is a structural schematic diagram of a bushing press-fitting mechanism provided by the present invention.

Fig. 2 is a schematic diagram of the structure of the motor rotor.

FIG. 3 is a structural schematic diagram of another viewing angle of the rotor of the motor in FIG. 2 .

Fig. 4 is a schematic structural view of a first material moving assembly included in the bush pressing mechanism of Fig. 1 .

Detailed ways

Specific embodiments of the present invention will be further described in detail below. It should be understood that the description of the embodiments of the present invention here is not intended to limit the protection scope of the present invention.

As shown in FIG. 1 , it is a schematic structural diagram of the bush press-fitting mechanism provided by the present invention. The bushing pressing mechanism includes a first material moving assembly 10 , a second material moving assembly 20 arranged on one side of the first material moving assembly 10 , and a pressing assembly 30 arranged on one side of the second material moving assembly 20 . It is conceivable that the bush press-fitting mechanism also includes some other functional modules, such as a feeding module, a driving power supply module, etc., which are known technologies to those skilled in the art, and will not be repeated here.

Please refer to Figure 2 to Figure 4 together. It should be noted that the bush press-fitting mechanism is used to press-fit a motor rotor 40 into a bush 50 . A shaft center of the motor rotor 40 is pierced with a main shaft 41 , and two ends of the main shaft 41 protrude from the motor rotor 40 . One end of the main shaft 41 is provided with a pressing hole 42 , and the other end of the main shaft 41 is provided with a top hole 43 . After the motor rotor 40 is press-fitted into the bush 50 , the circumferential outer wall of the motor rotor 40 abuts against the circumferential inner wall of the bush 50 .

The first material moving assembly 10 includes a base plate 11, a material moving cylinder 12 arranged at one end of the base plate 11, two guide rails 13 arranged on the base plate 11, a positioning seat 14 arranged at the output end of the material moving cylinder 12 and slidingly arranged with the guide rail 13, and an oil pressure buffer 15 arranged at the end of the base plate 11 away from the material moving cylinder 12.

An empty slot 16 is defined on the base plate 11 , and the empty slot 16 corresponds to the press-fit assembly 30 . The hollow slot 16 is used to pass through a part of the press-fit assembly 30, so as to perform the press-fit operation. A circular groove 17 is opened in the middle section of the positioning seat 14 , and a loading module places a bushing 50 in the circular groove 17 . Part of the press-fit assembly 30 can pass through the circular groove 17 . The material transfer cylinder 12 can drive the positioning seat 14 to slide on the guide rail 13, and the oil pressure buffer 15 buffers the sliding positioning seat 14, so that the bushing 50 placed on the positioning seat 14 moves to the press-fitting position.

The second material moving assembly 20 includes a two-axis moving part 21, a moving plate 22 arranged at the output end of the two-axis moving part 21, at least one lifting slide 23 arranged on the moving plate 22, at least one clamping cylinder 24 arranged at the output end of the lifting slide 23, and a clamping claw 25 arranged at the output end of the clamping cylinder 24.

In this embodiment, the number of the lift slides 23 is two, the clamping cylinder 24 on one lift slide 23 clamps the motor rotor 40 for feeding, and the clamping cylinder 24 on the other lift slide 23 clamps and presses the bushing 50 on which the motor rotor 40 is mounted for unloading.

The two-axis moving part 21 itself is a prior art, and will not be repeated here. The two-axis moving part 21 can drive the moving plate 22 to move in a two-dimensional plane, thereby moving one end of the jaw 25 clamping the motor rotor 40 to a designated position, and cooperates with the press-fit assembly 30 to position and clamp the motor rotor 40. The specific matching method will be described below.

The lifting slide 23 is used to move the clamping cylinder 24 to one side of the bushing 50 after the pressing operation is completed, so that the clamping cylinder 24 can drive the jaws 25 to clamp and press the bushing 50 on which the motor rotor 40 is installed, thus completing the blanking operation. The clamping surfaces of the clamping jaws 25 are matched with the peripheral outer wall of the motor rotor 40 .

The pressing assembly 30 includes a first lifting part 31 arranged on one side of the first material moving assembly 10, a pressing pin 32 arranged at the output end of the first lifting part 31, a second lifting part 33 arranged on a side opposite to the first lifting part 31, and a thimble 34 arranged at the output end of the second lifting part 33.

The first lifting component 31 and the second lifting component 33 are in the prior art, and will not be repeated here. The pressing pin 32 is disposed opposite to the ejector pin 34 . The first lifting part 31 drives the motor rotor 40 clamped by the pressing pin 32 against the clamping claw 25 , while the second lifting part 33 drives the thimble 34 close to the motor rotor 40 . The pressing pin 32 and the thimble pin 34 abut against the pressing hole 42 and the top hole 43 at the same time and sandwich the motor rotor 40 . The maximum circumferential circle area of the pressing pin 32 and the thimble 34 is greater than the maximum circumferential circle area of the pressing hole 42 and the top hole 43, so that the arc surface of the pressing pin 32 and the ejector pin 34 can provide a good centering and positioning effect for the motor rotor 40, thereby preventing the motor rotor 40 from shifting or swinging during the press-fitting process, and improving the production efficiency and press-fitting accuracy of the device. The clamping cylinder 24 drives the clamping claws 25 to release the motor rotor 40 and clamps the second motor rotor 40 under the driving of the two-axis moving part 21 for pressing operation. Under the action of the first lifting component 31 and the second lifting component 33 , the pressing pin 32 and the thimble pin 34 clamp the motor rotor 40 to move toward the bushing 50 , and press the motor rotor 40 into the bushing 50 .

Compared with the prior art, the bushing press-fitting mechanism provided by the present invention provides positioning for the motor rotor 40 through the pressing pin 32 and the thimble 34 matched with the motor rotor 40, preventing the motor rotor 40 from shifting or swinging during the press-fitting process, and improving the production efficiency and press-fitting accuracy of the device. The bushing press-fitting mechanism does not require manual participation in the whole process, has a high degree of automation, and is suitable for assembly line production.

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement or improvement within the spirit of the present invention is covered by the claims of the present invention.

Claims (5)

1. A bushing press-fitting mechanism, which is used to press-fit a motor rotor into a bushing, the shaft center of the motor rotor is pierced with a main shaft, both ends of the main shaft protrude from the motor rotor, one end of the main shaft is provided with a press hole, and the other end of the main shaft is provided with a top hole, the bush press-fit mechanism is characterized in that: the bush press-fit mechanism includes a first material transfer assembly, a second material transfer assembly arranged on one side of the first material transfer assembly, and a press-fit assembly arranged on one side of the second material transfer assembly, the pressing assembly The loading assembly includes a first lifting component arranged on one side of the first material moving component, a pressing pin set on the output end of the first lifting component, a second lifting component oppositely arranged on one side of the first lifting component, and a thimble set on the output end of the second lifting component, the pressing pin is arranged opposite to the thimble, and the maximum circumferential area of the pressing pin and the thimble is larger than the maximum circumferential area of the pressing hole and the top hole. 2. The bushing press-fitting mechanism according to claim 1, wherein the first material transfer assembly comprises a base plate, a material transfer cylinder disposed at one end of the base plate, two guide rails disposed on the base plate, a positioning seat disposed at the output end of the material transfer cylinder and slidingly arranged with the guide rails, and an oil pressure buffer disposed at the end of the base plate away from the material transfer cylinder. 3 . The bushing press-fitting mechanism according to claim 2 , wherein an empty slot is opened on the base plate, and the empty slot corresponds to the press-fitting component. 4 . 4. The bushing press-fitting mechanism according to claim 2, wherein a circular groove is opened in the middle section of the positioning seat, and the thimble can pass through the circular groove. 5. The bushing press-fitting mechanism according to claim 1, characterized in that: the second material transfer assembly comprises a two-axis moving part, a moving plate arranged at the output end of the two-axis moving part, at least one lifting slide set on the moving plate, at least one clamping cylinder set at the output end of the lifting slide, and a clamping claw set at the output end of the clamping cylinder.