Motor worm press fitting test device and method

Abstract

The invention relates to a motor worm press fitting test device and method, and the device comprises a tool plate and a first support, a press fitting plate is arranged above the tool plate, a clamping tool comprises a left clamping arm and a right clamping arm, the left clamping arm and the right clamping arm are each provided with a semicircular hole, and the two semicircular holes are spliced to form a limiting hole matched with a motor shaft; a pressing machine is arranged on the press-fitting plate, and the movable end of the pressing machine is connected with an extrusion cylinder which extrudes a motor shaft downwards through an elastic piece; a vertical plate is arranged on the press-fitting plate, a pressure detection unit is fixed to the vertical plate, a transverse plate is arranged at the detection end of the pressure detection unit, a clamping air cylinder is arranged on the transverse plate, a left clamping block and a right clamping block are arranged at the movable end of the clamping air cylinder, and positioning grooves are formed in the surfaces of the opposite sides of the left clamping block and the right clamping block; the press fitting and drawing testing functions of the worm are integrated, the cost is greatly reduced, meanwhile, the machining efficiency is improved, feeding and discharging of the motor are quite convenient and rapid, and the overall structure is quite compact.

Description

Technical Field

[0001] The present invention relates to the technical field of motor processing, and more specifically to a motor worm press-fitting test device and method. Background Art

[0002] When processing a type of motor that requires a worm to be installed on the motor shaft, the worm needs to be mounted on the motor shaft, and then the motor shaft is knurled, and then press-fitted and fixed, and the fixation reliability is tested; existing equipment usually requires two separate machines for press-fitting and testing, and a series of auxiliary tooling such as positioning and shifting are added accordingly, which reduces production efficiency and also requires more energy and installation space. There is a need for a motor worm press-fitting test device and method that integrates press-fitting and testing. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a motor worm press-fitting test device and a motor worm press-fitting test method in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A motor worm press-fitting test device is constructed, which includes a tooling plate and a first bracket supporting the tooling plate, the tooling plate is provided with a slot through which a power supply motor passes; a press-fitting plate is provided above the tooling plate, and a second bracket supporting the press-fitting plate is provided on the tooling plate; a clamping tool is provided on the tooling plate, and the clamping tool includes a left clamping arm and a right clamping arm, and semicircular holes are provided on the left clamping arm and the right clamping arm, and the two semicircular holes are spliced ​​to form a limiting hole that cooperates with the motor shaft; a press is provided on the press-fitting plate, and the movable end of the press is connected to an extrusion cylinder that presses the motor shaft downward through an elastic member; the press-fitting plate A vertical plate is arranged on the upper part, a pressure detection unit is fixed on the vertical plate, a horizontal plate is arranged at the detection end of the pressure detection unit, and the horizontal plate is longitudinally slidably arranged on the vertical plate; a clamping cylinder is arranged on the horizontal plate, a left clamping block and a right clamping block are arranged at the movable end of the clamping cylinder, and positioning grooves are arranged on the opposite side surfaces of the left clamping block and the right clamping block; the left clamping block and the right clamping block have a first state and a second state, in the first state, there is a spacing between the left clamping block and the right clamping block and the two positioning grooves enclose a guide hole for guiding the extrusion cylinder; in the second state, the left clamping block and the right clamping block clamp and fix the worm and the extrusion cylinder.

[0006] The motor worm press-fitting test device described in the present invention, wherein, the surfaces on the opposite sides of the left clamp arm and the right clamp arm are both provided with a first avoidance step for avoiding the clamping tooling, and the first avoidance step is provided with a second avoidance groove for avoiding the worm; the semicircular hole is opened at the bottom of the second avoidance groove.

[0007] The motor worm press-fitting test device described in the present invention is characterized in that the second avoidance groove is in the shape of an arc surface that gradually expands from bottom to top.

[0008] The motor worm press-fitting test device described in the present invention, wherein the left clamp arm and the right clamp arm are both slidably connected to the tooling plate; the clamping tool also includes two pushing cylinders that respectively drive the left clamp arm and the right clamp arm.

[0009] The motor worm press-fit testing device described in the present invention further includes an L-shaped plate, the lateral end of the L-shaped plate is fixedly connected to the vertical plate, and the pressure detection unit is fixedly connected to the L-shaped plate and the detection end passes downward through the lateral edge of the L-shaped plate.

[0010] The motor worm press-fitting test device of the present invention is characterized in that a movable sleeve is provided at the movable end of the press, the elastic member is arranged inside the movable sleeve, and the extrusion cylinder is passed through the lower end of the movable sleeve.

[0011] The motor worm press-fitting test device described in the present invention is characterized in that the upper end of the extrusion cylinder is T-shaped, and a movable groove matching the upper end of the extrusion cylinder is arranged inside the movable sleeve.

[0012] In the motor worm press-fit testing device of the present invention, the elastic member is a spring and is connected to the tail end of the extrusion cylinder.

[0013] The motor worm press-fitting test device of the present invention is characterized in that a limiting column passing through the spring is provided on the inner top of the movable sleeve.

[0014] A motor worm press-fit test method is applied to the motor worm press-fit test device as described above, wherein the method comprises the steps of:

[0015] Load the motor from the bottom of the tooling plate and pass it through the slot from bottom to top. The left clamping arm and the right clamping arm of the clamping tooling are closed to clamp the motor shaft to limit the position. The clamping position is located below the worm. The motor shaft can move up and down relative to the clamping tooling to complete the motor loading.

[0016] The operation of the press drives the extrusion cylinder downward to a first height position, and the extrusion cylinder is located between the left clamping block and the right clamping block;

[0017] The operation of the clamping cylinder drives the left clamping block and the right clamping block to enter the first state, and the two positioning grooves enclose to form a guide hole for guiding the extrusion cylinder;

[0018] The operation of the press drives the extrusion cylinder to move downward under the guidance of the guide hole to extrude the motor shaft. The elastic member is compressed, so that the motor shaft moves downward to the worm and the knurled part on the motor shaft is interference fit, completing the press fitting.

[0019] The operation of the clamping cylinder drives the left clamping block and the right clamping block to enter the second state, and the left clamping block and the right clamping block clamp the fixed worm and the extrusion cylinder, and the data of the pressure detection unit is reset to zero;

[0020] The operation of the press drives the extrusion cylinder upward to the second height position, the elastic member is stretched, and the reading of the pressure detection unit is read. If it exceeds the set threshold, the product is deemed unqualified, otherwise the product is deemed qualified.

[0021] The beneficial effects of the present invention are as follows: the motor is loaded from the bottom of the tooling plate and passed through the slot from bottom to top, the left clamping arm and the right clamping arm of the clamping tooling are closed to clamp and limit the motor shaft, and the clamping position is located below the worm, and the motor shaft can move up and down relative to the clamping tooling to complete the motor loading; the operation of the press drives the extrusion cylinder to move down to the first height position, and the extrusion cylinder is located between the left clamping block and the right clamping block; the operation of the clamping cylinder drives the left clamping block and the right clamping block to enter the first state, and the two positioning grooves enclose a guide hole for guiding the extrusion cylinder; the operation of the press drives the extrusion cylinder to move downward under the guidance of the guide hole to extrude the motor shaft, and the elastic member is compressed, so that the motor shaft moves downward to the position where the worm and the motor meet. The knurled part on the machine shaft is interference fit to complete the press-fitting; the operation of the clamping cylinder drives the left clamping block and the right clamping block to enter the second state, and the left clamping block and the right clamping block clamp and fix the worm and the extrusion cylinder, and the data of the pressure detection unit is reset to zero; the operation of the press drives the extrusion cylinder to move upward to the second height position, the elastic part is stretched, and the reading of the pressure detection unit is read. If it exceeds the set threshold, the product is deemed unqualified, otherwise the product is deemed qualified; using the method of the present application, the press-fitting and drawing test functions of the worm are integrated into one, which greatly reduces the cost while improving the processing efficiency, and the loading and unloading of the motor are very convenient and fast, the overall structure is very compact, the volume is small, and the space occupied is extremely small. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0023] Figure 1 It is a structural schematic diagram of a motor worm press-fitting test device according to a preferred embodiment of the present invention;

[0024] Figure 2 yes Figure 1 The enlarged schematic diagram at A in the middle;

[0025] Figure 3 It is a structural cross-sectional view of a motor worm press-fitting test device according to a preferred embodiment of the present invention;

[0026] Figure 4 It is an enlarged schematic diagram of the left clamping arm and the right clamping arm of the motor worm press-fitting test device of the preferred embodiment of the present invention;

[0027] Figure 5 It is a cross-sectional view of the assembly of the movable sleeve and the extrusion cylinder of the motor worm press-fitting test device of the preferred embodiment of the present invention;

[0028] Figure 6 It is a flow chart of the motor worm press-fitting test method according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0030] The motor worm press-fitting test device of the preferred embodiment of the present invention is as follows: Figure 1 See also Figure 2-Figure 5, including a tooling plate 1 and a first bracket 2 for supporting the tooling plate 1, the tooling plate 1 is provided with a slot through which the power supply machine 3 passes; a pressing plate 4 is provided above the tooling plate 1, and a second bracket 5 for supporting the pressing plate 4 is provided on the tooling plate 1; a clamping tool 6 is provided on the tooling plate 1, and the clamping tool 6 includes a left clamping arm 60 and a right clamping arm 61, and the left clamping arm 60 and the right clamping arm 61 are both provided with a semicircular hole 600, and the two semicircular holes 600 are spliced ​​to form a limiting hole that cooperates with the motor shaft; a press 7 is provided on the pressing plate 4, and the movable end of the press 7 is connected to an extrusion cylinder 71 for downwardly extruding the motor shaft through an elastic member 70; a vertical plate 40 is provided on the pressing plate 4, and a A pressure detection unit 41, a detection end of the pressure detection unit 41 is provided with a horizontal plate 42, and the horizontal plate 42 is longitudinally slidably arranged on the vertical plate 40; a clamping cylinder 43 is arranged on the horizontal plate 42, and a left clamping block 430 and a right clamping block 431 are arranged on the movable end of the clamping cylinder 43, and the surfaces of the opposite sides of the left clamping block 430 and the right clamping block 431 are both provided with positioning grooves 4300; the left clamping block 430 and the right clamping block 431 have a first state and a second state, in the first state, there is a distance between the left clamping block 430 and the right clamping block 431 and the two positioning grooves enclose a guide hole for guiding the extrusion cylinder 71; in the second state, the left clamping block 430 and the right clamping block 431 clamp and fix the worm 30 and the extrusion cylinder 71;

[0031] The motor 3 is loaded from the bottom of the tooling plate 1 and passed through the slot from bottom to top. The clamping tool 6 operates the left clamping arm 60 and the right clamping arm 61 to close and clamp the motor shaft to limit the position, and the clamping position is located below the worm 30. The motor shaft can move up and down relative to the clamping tool 6 to complete the motor loading;

[0032] The operation of the press 7 drives the extrusion cylinder 71 downward to the first height position, and the extrusion cylinder 71 is located between the left clamp block 430 and the right clamp block 431; the operation of the clamping cylinder 43 drives the left clamp block 430 and the right clamp block 431 to enter the first state, and the two positioning grooves 4300 enclose to form a guide hole for guiding the extrusion cylinder 71;

[0033] The operation of the press 7 drives the extrusion cylinder 71 to move downward under the guidance of the guide hole to extrude the motor shaft, and the elastic member 70 is compressed, so that the motor shaft moves downward to the worm 30 and is tightly fitted with the knurled portion 31 on the motor shaft, completing the press fitting;

[0034] The clamping cylinder 43 operates to drive the left clamping block 430 and the right clamping block 431 to enter the second state, and the left clamping block 430 and the right clamping block 431 clamp and fix the worm 30 and the extrusion cylinder 71; the data of the pressure detection unit 41 is reset to zero;

[0035] The operation of the press 7 drives the extrusion cylinder 71 upward to the second height position, the elastic member 70 is stretched, and the reading of the pressure detection unit 41 is read. If the reading exceeds the set threshold, the product is deemed unqualified, otherwise the product is deemed qualified;

[0036] By applying the method of the present application, the press-fitting and drawing test functions of the worm are integrated into one, which greatly reduces the cost while improving the processing efficiency. The loading and unloading of the motor are very convenient and fast, the overall structure is very compact, the volume is small, and the space occupied is extremely small.

[0037] Preferably, the left clamp arm 60 and the right clamp arm 61 are provided with a first avoidance step 601 on the surface of the opposite side for avoiding the clamping tooling, and the first avoidance step 601 is provided with a second avoidance groove 602 for avoiding the worm; a semicircular hole 600 is opened at the bottom of the second avoidance groove 602; the second avoidance groove 602 is in the shape of an arc that gradually expands from bottom to top; the structure is simple, and when the left clamp arm 60 and the right clamp arm 61 are closed, the shape of the two second avoidance grooves 602 can be used to better squeeze the worm upward to expose the motor shaft, thereby facilitating the cooperation between the two semicircular holes 600 and the motor shaft.

[0038] Preferably, the left clamp arm 60 and the right clamp arm 61 are both slidably connected to the tooling plate 1; the clamping tool 6 also includes two pushing cylinders 62 for driving the left clamp arm and the right clamp arm respectively; the integrity is good and the operation is reliable.

[0039] Preferably, the device also includes an L-shaped plate 8, the lateral end of the L-shaped plate 8 is fixedly connected to the vertical plate 40, the pressure detection unit 41 is fixedly connected to the L-shaped plate 8 and the detection end passes downward through the lateral edge of the L-shaped plate 8; the installation reliability is good and the anti-interference performance is good.

[0040] Preferably, a movable sleeve 72 is provided at the movable end of the press 7, an elastic member 70 is provided inside the movable sleeve 72, and an extrusion cylinder 71 is provided at the lower end of the movable sleeve 72; the upper end of the extrusion cylinder 71 is T-shaped, and a movable groove matching the upper end of the extrusion cylinder 71 is provided inside the movable sleeve 72; the elastic member 70 is a spring and connected to the tail end of the extrusion cylinder 71; a limiting column 73 passing through the spring is provided at the inner top of the movable sleeve 72;

[0041] During the press-fitting operation, the spring is compressed until the limit column 73 presses against the extrusion cylinder 71 to ensure smooth press-fitting; during detection, the spring is stretched and the elastic force is used to provide an upward pulling force. Since the reading of the pressure detection unit 41 is cleared after the press-fitting is completed, if the worm is press-fitted tightly, the pulling force will be borne entirely by the worm, and the pressure detection unit 41 will be close to zero. If the worm is loose, the worm will be pulled upward, causing a reading to appear in the pressure detection unit 41, thereby detecting an unstable condition.

[0042] A motor worm press-fit test method is applied to the motor worm press-fit test device as described above, such as Figure 6 As shown, the method comprises the steps of:

[0043] S01: Load the motor from the bottom of the tooling plate and pass it through the slot from bottom to top. The left clamping arm and the right clamping arm of the clamping tooling are closed to clamp the motor shaft to limit the position. The clamping position is located below the worm. The motor shaft can move up and down relative to the clamping tooling to complete the motor loading.

[0044] S02: The operation of the press drives the extrusion cylinder downward to a first height position, and the extrusion cylinder is located between the left clamping block and the right clamping block;

[0045] S03: The clamping cylinder operates to drive the left clamping block and the right clamping block into the first state, and the two positioning grooves enclose to form a guide hole for guiding the extrusion cylinder;

[0046] S04: The operation of the press drives the extrusion cylinder to move downward under the guidance of the guide hole to extrude the motor shaft. The elastic member is compressed, so that the motor shaft moves downward to the knurled part of the worm and is tightly fitted with the knurled part on the motor shaft, completing the press fitting;

[0047] S05: The clamping cylinder operates to drive the left clamping block and the right clamping block to enter the second state, and the left clamping block and the right clamping block clamp the fixed worm and the extrusion cylinder, and the data of the pressure detection unit is reset to zero;

[0048] S06: The operation of the press drives the extrusion cylinder upward to the second height position, the elastic member is stretched, and the reading of the pressure detection unit is read. If it exceeds the set threshold, the product is considered unqualified, otherwise the product is considered qualified;

[0049] By applying the method of the present application, the press-fitting and drawing test functions of the worm are integrated into one, which greatly reduces the cost while improving the processing efficiency. The loading and unloading of the motor are very convenient and fast, the overall structure is very compact, the volume is small, and the space occupied is extremely small.

[0050] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A motor worm press-fit test device, characterized in that: It includes a tooling plate and a first bracket for supporting the tooling plate, the tooling plate is provided with a slot through which the power supply machine passes; a pressing plate is provided above the tooling plate, and a second bracket for supporting the pressing plate is provided on the tooling plate; a clamping tool is provided on the tooling plate, and the clamping tool includes a left clamping arm and a right clamping arm, and the left clamping arm and the right clamping arm are both provided with semicircular holes, and the two semicircular holes are spliced ​​to form a limiting hole that cooperates with the motor shaft; a press is provided on the pressing plate, and the movable end of the press is connected to an extrusion cylinder for downwardly extruding the motor shaft through an elastic member; a vertical plate is provided on the pressing plate, and the A pressure detection unit is fixed on the vertical plate, and a horizontal plate is provided at the detection end of the pressure detection unit, and the horizontal plate is longitudinally slidably arranged on the vertical plate; a clamping cylinder is provided on the horizontal plate, and a left clamping block and a right clamping block are provided at the movable end of the clamping cylinder, and positioning grooves are provided on the opposite side surfaces of the left clamping block and the right clamping block; the left clamping block and the right clamping block have a first state and a second state, and in the first state, there is a spacing between the left clamping block and the right clamping block and the two positioning grooves enclose a guide hole for guiding the extrusion cylinder; in the second state, the left clamping block and the right clamping block clamp and fix the worm and the extrusion cylinder.

2. The motor worm press-fit test device according to claim 1, characterized in that: The left clamp arm and the right clamp arm are each provided with a first avoidance step on the surface on the opposite side thereof for avoiding the clamping tool, and the first avoidance step is provided with a second avoidance groove for avoiding the worm; the semicircular hole is provided at the bottom of the second avoidance groove.

3. The motor worm press-fit test device according to claim 2, characterized in that: The second avoidance groove is in a shape of an arc surface that gradually expands from bottom to top.

4. The motor worm press-fit test device according to claim 2, characterized in that: The left clamp arm and the right clamp arm are both slidably connected to the tooling plate; the clamping tool also includes two pushing cylinders for driving the left clamp arm and the right clamp arm respectively.

5. The motor worm press-fit testing device according to claim 1, characterized in that: The device also includes an L-shaped plate, a lateral end of the L-shaped plate is fixedly connected to the vertical plate, and the pressure detection unit is fixedly connected to the L-shaped plate and the detection end passes downward through the lateral edge of the L-shaped plate.

6. The motor worm press-fit test device according to claim 1, characterized in that: The movable end of the press is provided with a movable sleeve, the elastic member is arranged inside the movable sleeve, and the extrusion cylinder is passed through the lower end of the movable sleeve.

7. The motor worm press-fit testing device according to claim 6, characterized in that: The upper end of the extrusion cylinder is T-shaped, and a movable groove matching with the upper end of the extrusion cylinder is arranged inside the movable sleeve.

8. The motor worm press-fit testing device according to claim 7, characterized in that: The elastic member is a spring and is connected to the rear end of the extrusion cylinder.

9. The motor worm press-fit testing device according to claim 8, characterized in that: The inner top of the movable sleeve is provided with a limiting column passing through the spring.

10. A motor worm press-fit test method, applied to the motor worm press-fit test device as claimed in any one of claims 1 to 9, characterized in that: The method comprises the steps of: Load the motor from the bottom of the tooling plate and pass it through the slot from bottom to top. The left clamping arm and the right clamping arm of the clamping tooling are closed to clamp the motor shaft to limit the position. The clamping position is located below the worm. The motor shaft can move up and down relative to the clamping tooling to complete the motor loading. The operation of the press drives the extrusion cylinder downward to a first height position, and the extrusion cylinder is located between the left clamping block and the right clamping block; The operation of the clamping cylinder drives the left clamping block and the right clamping block to enter the first state, and the two positioning grooves enclose to form a guide hole for guiding the extrusion cylinder; The operation of the press drives the extrusion cylinder to move downward under the guidance of the guide hole to extrude the motor shaft. The elastic member is compressed, so that the motor shaft moves downward to the worm and the knurled part on the motor shaft is interference fit, completing the press fitting. The operation of the clamping cylinder drives the left clamping block and the right clamping block to enter the second state, and the left clamping block and the right clamping block clamp the fixed worm and the extrusion cylinder, and the data of the pressure detection unit is reset to zero; The operation of the press drives the extrusion cylinder upward to the second height position, the elastic member is stretched, and the reading of the pressure detection unit is read. If it exceeds the set threshold, the product is deemed unqualified, otherwise the product is deemed qualified.

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