A motor housing clamping tool

Abstract

The present invention belongs to the technical field of motor housing processing, and specifically provides a motor housing clamping tool, comprising a base, a vertical shaft rotatably arranged on the upper wall of the base, and a turntable coaxially fixed to the upper end of the vertical shaft, a pneumatic clamping assembly is provided through a circular array on the turntable, a guide bar is fixedly provided on the upper wall of the base, the guide bar is located on the outer periphery of the edge of the turntable, the guide bar cooperates with the pneumatic clamping assembly, an air supply assembly is provided on the upper wall of the base, and the pneumatic clamping assembly and the air supply assembly are connected through the vertical shaft. The present invention creatively designs a pneumatic clamping assembly and uses a guide bar to automatically switch and control the air path of the pneumatic clamping assembly, so that the motor housing can be automatically clamped and unlocked without any control system. The ingenious circuit design enables the equipment to automatically stop in an emergency, effectively solving the technical problem that the existing technology is difficult to automatically clamp and unlock the motor housing and difficult to respond to emergency situations.

Description

Technical Field

[0001] The invention belongs to the technical field of motor shell processing, and specifically relates to a motor shell clamping tool. Background Art

[0002] The production and processing of motor casings requires punching, boring, turning, drilling and other processing steps. These processes usually require the use of fixtures to clamp and lock the motor casings one by one to meet the needs of assembly line processing. After the processing is completed, the motor casings are unlocked and released one by one so that the motor casings can be taken out for subsequent processing.

[0003] The existing motor housing clamping technology has the following problems:

[0004] (1) The existing motor housing clamping fixtures are relatively lacking in automated clamping and unlocking design, and the clamping and unlocking control methods mostly rely on complex control systems, resulting in a high failure rate;

[0005] (2) The motor housing clamping tooling of the prior art is difficult to automatically respond to emergency situations. When an emergency situation occurs, such as a missing part in the fixture or a deviation in the placement of the motor housing, the motor housing clamping tooling cannot automatically stop in time, which can easily cause damage to the clamping tooling or the motor housing. The parking operation mostly relies on manual judgment, which may cause a certain lag or misjudgment. Summary of the Invention

[0006] In response to the above technical problems, the present invention provides a motor casing clamping tool, creatively designs a multi-station pneumatic clamping assembly, and uses a simple guide bar to automatically switch and control the air path of the pneumatic clamping assembly, so that the pneumatic clamping assembly can automatically clamp and unlock the motor casing without the need for any control system, with a lower failure rate. The control of the drive motor is achieved through clever circuit design, so that the equipment can automatically stop in an emergency, effectively solving the technical problems that the existing technology is difficult to automatically clamp and unlock the motor casing and difficult to deal with emergencies.

[0007] The technical solution adopted by the present invention is as follows: This solution provides a motor housing clamping tool, including a base, a vertical shaft rotatably arranged on the upper wall of the base, and a turntable coaxially fixed on the upper end of the vertical shaft. A pneumatic clamping assembly is provided through the annular array on the turntable. A guide bar is fixed on the upper wall of the base. The guide bar is located on the outer periphery of the edge of the turntable. The guide bar cooperates with the pneumatic clamping assembly to switch and control the clamping and unlocking states of the pneumatic clamping assembly. An air supply assembly is provided on the upper wall of the base. A drive motor is fixed on the upper wall of the base. The drive motor and the vertical shaft are connected by a belt drive to drive the vertical shaft and the turntable to rotate. The pneumatic clamping assembly includes a pneumatic clamp, a reversing valve, a reversing power part and a detection The pneumatic clamp runs through the turntable and is provided with three groups. The reversing valve is fixed on the lower wall of the turntable. The pneumatic clamps are connected with the reversing valves respectively. The reversing power part is provided on the lower wall of the turntable. The reversing power part and the reversing valve are driven. The reversing power part cooperates with the guide bar. The guide bar contacts and presses the reversing power part to switch its state, thereby controlling the reversing valve to switch the airflow direction. The detector is provided at the edge of the turntable. The detector is used to detect whether the motor housing is correctly placed in the pneumatic clamping assembly. The coaxial fixed sleeve in the middle of the vertical shaft is provided with a negative pressure swivel and a high pressure swivel. The negative pressure swivel and the high pressure swivel are respectively connected with the reversing valve, and the negative pressure swivel and the high pressure swivel are respectively connected to the air supply assembly through the vertical shaft.

[0008] In order to clamp the motor housing, in this scheme, the pneumatic clamp consists of a hinge seat, a cylinder and a clamping strip. The hinge seat is fixedly set on the upper wall of the turntable, the base of the cylinder is fixedly set on the lower wall of the turntable, the telescopic part of the cylinder passes through the upper wall of the turntable, one end of the clamping strip is rotatably set on the hinge seat, the middle part of the clamping strip is movably connected to the upper end of the telescopic part of the cylinder, and an air pipe is provided between the base of the cylinder and the outer wall of the circular circumference of the reversing valve.

[0009] A three-way rotor is provided for rotation inside the reversing valve, and an eccentric rod is provided for rotation on the outer wall of the reversing valve. The rotating shaft of the eccentric rod passes through the reversing valve and is fixedly connected to the three-way rotor. Air pipe 2 and air pipe 3 are provided through the circumferential outer wall of the reversing valve. Air pipe 2 and air pipe 1 are arranged opposite to each other near the end of the reversing valve. The other end of air pipe 2 is connected to the circumferential wall of the negative pressure rotating ring. The end of air pipe 3 near the reversing valve is located between the ends of air pipe 2 and air pipe 1, and the other end of air pipe 3 is connected to the circumferential wall of the high-pressure rotating ring.

[0010] The reversing power component consists of a piston telescopic rod 1, a piston telescopic rod 2 and a swing arm, one end of the swing arm is rotatably arranged on the lower wall of the turntable, and the swing arm rotates in the horizontal plane, the base part of the piston telescopic rod 1 is rotatably arranged on the lower wall of the turntable, the piston telescopic rod 1 rotates in the horizontal plane, the telescopic part of the piston telescopic rod 1 is rotatably connected with the middle part of the swing arm, the base part of the piston telescopic rod 2 is rotatably arranged on the lower wall of the turntable, the piston telescopic rod 2 rotates in the vertical plane, the telescopic part of the piston telescopic rod 2 is rotatably connected with the eccentric end of the eccentric rod, the outer end of the swing arm corresponds to the guide bar. When the swing arm moves to the guide bar, the guiding pressing effect of the guide bar can make the swing arm rotate, an oil pipe is connected between the piston telescopic rod 1 and the base part of the piston telescopic rod 2, and the communicating space inside the piston telescopic rod 1, the piston telescopic rod 2 and the oil pipe is filled with hydraulic oil. A spring is arranged inside the piston telescopic rod 1, and the spring makes the piston telescopic rod 1 in an extended state in a natural state, and under the action of the hydraulic oil, the piston telescopic rod 2 is in a contracted state in this case.

[0011] The detector consists of an elastic sliding column and a sliding rod. The elastic sliding column is vertically slidable on the upper wall of the turntable. A push spring is provided inside the elastic sliding column. The lower end of the push spring is connected to the inside of the turntable. The push spring makes the elastic sliding column extend upward in a natural state. The sliding rod is horizontally slidable on the circumferential side wall of the turntable. The elastic sliding column and the sliding rod are arranged for tilted transmission.

[0012] In order to cooperate with the detector, this solution sets push switch 1 and push switch 2 on the guide bar. Push switch 1 is located on the movement path of the outer end of the slide bar, and push switch 2 is located on the movement path of the outer end of the rotating arm. In addition, push switch 1 and push switch 2 are connected in parallel and electrically connected to the drive motor after parallel connection. When push switch 1 is not pressed, it is in the disconnected state. When push switch 1 is pressed, it is in the closed state. When push switch 2 is not pressed, it is in the closed state. When push switch 2 is pressed, it is in the disconnected state.

[0013] The beneficial effects achieved by the present invention are as follows:

[0014] (1) In view of the problem that the control of automatic clamping and unlocking of the motor housing in the existing technology is relatively complicated and has a high failure rate, the present invention adopts a turntable design and creatively designs a multi-station pneumatic clamping assembly, and uses a simple guide bar to automatically switch the air path of the pneumatic clamping assembly, so that the pneumatic clamping assembly can automatically clamp and unlock the motor housing without any control system, which not only reduces the failure rate but also reduces the cost;

[0015] (2) The present invention uses a detector to automatically sense the placement status of the motor housing and controls the drive motor through clever circuit design, so that the equipment can automatically stop in an emergency;

[0016] (3) The rotating arm and the guide bar in the reversing power unit cooperate with each other. Under the guidance of the guide bar, the rotating arm rotates automatically. Then, the piston telescopic rod 1 and the piston telescopic rod 2 in the reversing power unit adopt hydraulic transmission to realize the control of the rotation angle of the eccentric rod, thereby realizing the rotation control of the three-way rotor inside the reversing valve, and further realizing the gas path switching control;

[0017] (4) The negative pressure fixed ring and high pressure fixed ring in the air supply assembly are sleeved on the outside of the vertical shaft and are connected to the negative pressure rotating ring and high pressure rotating ring respectively through the air pipe 4 and air pipe 5 inside the vertical shaft, thereby realizing the air path connection with the pneumatic clamping assembly, thereby being able to control the cylinder, and cooperate with the air path switching of the three-way rotor to realize the extension and contraction of the cylinder, thereby realizing the clamping and unlocking of the motor housing;

[0018] (5) Push switch 1 and push switch 2 are connected in parallel and then electrically connected to the drive motor. This arrangement can control the start and stop of the drive motor according to the status of the detector. When the motor housing is placed normally, the elastic slide is compressed and push switch 1 is pressed and closed first, which can ensure the continuous operation of the drive motor. When the motor housing is placed abnormally or no motor housing is placed, the elastic slide cannot be compressed and push switch 1 will not be pressed. Then, when push switch 2 is pressed, the drive motor will be powered off, thereby achieving automatic parking in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a motor housing clamping tool proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a motor housing clamping tool proposed by the present invention with the base removed;

[0021] Figure 3 The structure of the pneumatic clamping assembly in the present invention is shown as follows Figure 1 ;

[0022] Figure 4 for Figure 2 A partial enlarged view of part A in FIG;

[0023] Figure 5 A top view of a motor housing clamping tool proposed by the present invention;

[0024] Figure 6 This is a side sectional view of a motor housing clamping tool proposed by the present invention;

[0025] Figure 7 for Figure 6 A partial enlarged view of part B in FIG;

[0026] Figure 8 The structure of the pneumatic clamping assembly in the present invention is shown as follows Figure 2 ;

[0027] Figure 9 for Figure 6 A partial enlarged view of part C in FIG;

[0028] Figure 10 A partial cross-sectional view of the turntable at the detector in the present invention;

[0029] Figure 11 This is a schematic diagram of the circuit connection principle of the push switch 1, the push switch 2 and the drive motor in the present invention.

[0030] Among them, 1. Base, 2. Vertical shaft, 21. Negative pressure swivel, 22. High pressure swivel, 23. Trachea 4, 24. Trachea 5, 3. Turntable, 31. Limit column, 4. Pneumatic clamping assembly, 41. Pneumatic clamp, 411. Hinge seat, 412. Cylinder, 413. Clamping strip, 414. Bar hole, 415. Connecting shaft, 416. Trachea 1, 42. Reversing valve, 421. Three-way rotor, 422. T-type through hole, 423. Eccentric rod, 424. Trachea 2, 425. Trachea 3, 43. Reversing power part, 431 , piston telescopic rod 1, 432, piston telescopic rod 2, 433, rotating arm, 434, resistance reduction wheel, 435, oil pipe, 44, detector, 441, elastic sliding column, 442, sliding rod, 443, dial button, 444, oblique bar hole, 445, pressing wheel, 5, guide bar, 51, arc bar, 511, press switch 1, 512, press switch 2, 52, involute bar, 6, air supply assembly, 61, negative pressure fixed ring, 62, high pressure fixed ring, 63, negative pressure box, 64, high pressure box, 65, pressure pump, 7, drive motor.

[0031] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0032] Example 1: Please refer to Figure 1-Figure 7, This embodiment provides a motor housing clamping tool, including a base 1, a vertical shaft 2 rotatably arranged on the upper wall of the base 1, and a turntable 3 coaxially fixed on the upper end of the vertical shaft 2. Six groups of pneumatic clamping components 4 are arranged in a circular array on the turntable 3. Six limiting columns 31 are arranged in a circular array on the upper wall of the turntable 3. The limiting columns 31 are respectively located at the pneumatic clamping components 4. The limiting columns 31 position the motor housing. A guide bar 5 is fixed on the upper wall of the base 1. The guide bar 5 is located on the outer periphery of the edge of the turntable 3. The guide bar 5 cooperates with the pneumatic clamping component 4 to switch the clamping and unlocking states of the pneumatic clamping component 4. An air supply component 6 is provided on the upper wall of the base 1. The pneumatic clamping component 4 and the air supply component 6 are connected through the vertical shaft 2. A driving motor 7 is fixed on the upper wall of the base 1 to drive The driving motor 7 and the vertical shaft 2 are connected by a belt drive. The driving motor 7 rotates the vertical shaft 2 and the turntable 3 through the belt. The pneumatic clamping assembly 4 includes a pneumatic clamp 41, a reversing valve 42, a reversing power part 43 and a detector 44. The pneumatic clamp 41 passes through the turntable 3 and is provided in three groups. The limit column 31 is located between the three groups of pneumatic clamps 41. The reversing valve 42 is fixedly provided on the lower wall of the turntable 3. The pneumatic clamp 41 is respectively communicated with the reversing valve 42. The reversing power part 43 is provided on the lower wall of the turntable 3. The reversing power part 43 and the reversing valve 42 are transmission-arranged. The reversing power part 43 cooperates with the guide bar 5. The guide bar 5 contacts and presses the reversing power part 43, thereby switching its state, thereby controlling the reversing valve 42 to switch the airflow direction. The detector 44 is provided on the edge of the turntable 3 , the detector 44 is used to detect whether the motor housing is correctly placed in the pneumatic clamping assembly 4, a coaxial fixed sleeve is provided with a negative pressure swivel 21 and a high pressure swivel 22 in the middle of the vertical shaft 2, the negative pressure swivel 21 and the high pressure swivel 22 are respectively connected to the reversing valve 42, the negative pressure swivel 21 and the high pressure swivel 22 are respectively connected to the air supply assembly 6 through the vertical shaft 2, the air supply assembly 6 includes a negative pressure fixed ring 61, a high pressure fixed ring 62, a negative pressure box 63, a high pressure box 64 and a pressure pump 65, the negative pressure fixed ring 61 and the high pressure fixed ring 62 are respectively fixed on the upper wall of the base 1, the vertical shaft 2 rotates through the negative pressure fixed ring 61 and the high pressure fixed ring 62, the negative pressure fixed ring 61 is connected to the negative pressure swivel 21, the high pressure fixed ring 62 is connected to the high pressure swivel 22, the high pressure box 64 is fixed on the upper wall of the base 1, and the high pressure box 64 is connected to the high pressure box The pressure fixing ring 62 is connected through a pipeline, the negative pressure box 63 is fixed on the upper wall of the high-pressure box 64, the negative pressure box 63 and the negative pressure fixing ring 61 are connected through a pipeline, the pressure pump 65 is fixed on the side wall of the high-pressure box 64, and the two ends of the pressure pump 65 are respectively connected to the high-pressure box 64 and the negative pressure box 63. In order to connect the negative pressure fixing ring 61 and the negative pressure rotating ring 21 and the high-pressure fixing ring 62 and the high-pressure rotating ring 22, the vertical shaft 2 is set to a hollow cylindrical structure, and the air pipe four 23 and the air pipe five 24 are fixed inside the vertical shaft 2. The upper end of the air pipe four 23 passes through the side wall of the vertical shaft 2 and is connected to the inside of the negative pressure rotating ring 21. The penetration point of the upper end of the air pipe four 23 and the vertical shaft 2 is located inside the enclosed space formed by the negative pressure rotating ring 21, so that the upper end of the air pipe four 23 is connected to the inside of the negative pressure rotating ring 21. Similarly,The lower end of the air pipe 4 23 passes through the side wall of the vertical shaft 2 and is connected to the interior of the negative pressure fixed ring 61. The upper end of the air pipe 5 24 passes through the side wall of the vertical shaft 2 and is connected to the interior of the high-pressure rotating ring 22. The lower end of the air pipe 5 24 passes through the side wall of the vertical shaft 2 and is connected to the interior of the high-pressure fixed ring 62.

[0033] like Figure 3 、 Figure 8 and Figure 9 As shown, the pneumatic clamp 41 consists of a hinge seat 411, a cylinder 412 and a clamping strip 413. The hinge seat 411 is fixedly arranged on the upper wall of the turntable 3, the base of the cylinder 412 is fixedly arranged on the lower wall of the turntable 3, the telescopic part of the cylinder 412 passes through the upper wall of the turntable 3, one end of the clamping strip 413 is rotatably arranged on the hinge seat 411, and a strip hole 414 is opened in the middle of the clamping strip 413. A connecting shaft 415 is fixedly provided at the upper end of the telescopic part of the cylinder 412, and the connecting shaft 415 can move through the strip hole 414. An air pipe 416 is provided between the base of the cylinder 412 and the outer wall of the circumference of the reversing valve 42.

[0034] like Figure 6-Figure 9 As shown, a three-way rotor 421 is provided for rotation inside the reversing valve 42, and a T-shaped through hole 422 is opened inside the three-way rotor 421. The three ends of the T-shaped through hole 422 respectively penetrate the circumferential outer wall of the three-way rotor 421. An eccentric rod 423 is provided for rotation on the outer wall of the reversing valve 42. The rotating shaft of the eccentric rod 423 penetrates the reversing valve 42 and is fixedly connected to the three-way rotor 421. An air pipe 2 424 and an air pipe 3 425 are provided through the circumferential outer wall of the reversing valve 42. The air pipe 2 424 and the end of the air pipe 1 416 near the reversing valve 42 are arranged opposite to each other. The other end of the air pipe 2 424 is connected to the circumferential wall of the negative pressure swivel 21. The end of the air pipe 3 425 near the reversing valve 42 is located between the ends of the air pipe 2 424 and the air pipe 1 416. The other end of the air pipe 3 425 is connected to the circumferential wall of the high-pressure swivel 22.

[0035] like Figures 1-6As shown, the reversing power part 43 is composed of a piston telescopic rod 1 431, a piston telescopic rod 2 432 and a rotating arm 433. One end of the rotating arm 433 is rotatably arranged on the lower wall of the turntable 3, and the rotating arm 433 rotates in the horizontal plane. The base of the piston telescopic rod 1 431 is rotatably arranged on the lower wall of the turntable 3. The piston telescopic rod 1 431 rotates in the horizontal plane. The telescopic part of the piston telescopic rod 1 431 is rotatably connected to the middle part of the rotating arm 433. The base of the piston telescopic rod 2 432 is rotatably arranged on the lower wall of the turntable 3. The piston telescopic rod 2 432 rotates in the vertical plane. The telescopic part of the piston telescopic rod 2 432 is rotatably connected to the eccentric end of the eccentric rod 423. The outer end of the rotating arm 433 is rotatably provided with a resistance reducing wheel 434. The resistance reduction wheel 434 at the outer end of the arm 433 corresponds to the guide bar 5. When the rotating arm 433 moves to the guide bar 5, the resistance reduction wheel 434 contacts the guide bar 5. The guiding and pressing action of the guide bar 5 can make the rotating arm 433 rotate. An oil pipe 435 is connected between the base parts of the piston telescopic rod 1 431 and the piston telescopic rod 2 432. The connecting space inside the piston telescopic rod 1 431, the piston telescopic rod 2 432 and the oil pipe 435 is filled with hydraulic oil. A spring is provided inside the piston telescopic rod 1 431. The spring makes the piston telescopic rod 1 431 in an extended state in a natural state, and under the action of the hydraulic oil, the piston telescopic rod 2 432 is in a contracted state in this case.

[0036] like Figure 3-Figure 6 as well as Figure 10 As shown, the detector 44 consists of an elastic slide 441 and a slide rod 442. The elastic slide 441 is vertically slidably arranged on the upper wall of the turntable 3. A push spring is provided inside the elastic slide 441. The lower end of the push spring is connected to the inside of the turntable 3. The push spring makes the elastic slide 441 extend upward in a natural state. The slide rod 442 is horizontally slidably arranged on the circumferential side wall of the turntable 3. The elastic slide 441 and the slide rod 442 are tilted for transmission. Specifically, a dial button 443 is fixedly provided on the lower edge of the side wall of the elastic slide 441, and an oblique bar hole 444 is penetrated through the side wall of the slide rod 442. The dial button 443 is movably arranged in the oblique bar hole 444, and a pressing wheel 445 is rotatably provided at the outer end of the slide rod 442.

[0037] like Figure 1 、 Figure 5 As shown, the guide bar 5 is composed of a smoothly connected arc bar 51 and an involute bar 52. The arc center of the arc bar 51 coincides with the center of the circle of the turntable 3, and the involute bar 52 gradually moves away from the center of the circle of the turntable 3 from the end of the arc bar 51 to the direction away from the end of the arc bar 51. When the turntable 3 drives the rotating arm 433 to rotate, the rotating arm 433 first enters the interior of the involute bar 52. Under the guiding action of the involute bar 52, the rotating arm 433 gradually rotates until the resistance reduction wheel 434 enters the arc bar 51, and the rotating arm 433 begins to maintain the state after rotation.

[0038] like Figures 1-11As shown, a push switch 1 511 is fixedly provided on the upper wall of the arc strip 51, and a push switch 2 512 is provided on the inner arc side wall of the arc strip 51. The push switch 1 511 is located on the movement path of the push wheel 445 at the outer end of the slide rod 442 (the elastic slide column 441 extends upward in the initial state, and the slide rod 442 extends for a short length. At this time, the push wheel 445 does not contact the push switch 1 511 during the movement. When the elastic slide column 441 is pressed, the rod 442 extends for a long length. The push wheel 445 will contact the push switch 1 511 during the movement and press the push switch 1 511). The push switch 2 512 is located on the movement path of the resistance reduction wheel 434 at the outer end of the rotating arm 433, and the push switch 1 511 and the push switch 2 512 are connected in parallel. After being connected in parallel, they are electrically connected to the drive motor 7. The push switch 1 51 When the push switch 1 is not pressed, it is in the open state. When the push switch 1 is pressed, it is in the closed state. When the push switch 2 is not pressed, it is in the closed state. When the push switch 2 is pressed, it is in the open state. The setting of the push switch 1 511 and the push switch 2 512 is as follows: when the pressing wheel 445 just moves to the push switch 1 511, the resistance reduction wheel 434 has not yet contacted the push switch 2 512. When the resistance reduction wheel 434 contacts the push switch 2 512, the pressing wheel 445 has not yet left the push switch 1 511, that is (under normal working conditions): the pressing wheel 445 first reaches the push switch 1 511, and then the resistance reduction wheel 434 contacts the push switch 2 512, then the resistance reduction wheel 434 leaves the push switch 2 512, and finally the pressing wheel 445 leaves the push switch 1 511.

[0039] The working principle of this embodiment is as follows: the driving motor 7 drives the vertical shaft 2 and the turntable 3 to rotate through the belt, and the motor housing is placed one by one in each pneumatic clamping assembly 4, and the pneumatic clamp 41 clamps and unlocks the motor housing. When the pneumatic clamping assembly 4 runs to the arc bar 51, the rotating arm 433 is pressed by the arc bar 51, so that the reversing valve 42 in the pneumatic clamping assembly 4 is connected to the high-pressure box 64, so that the pneumatic clamp 41 in the pneumatic clamping assembly 4 is opened, which is convenient for taking out the processed motor housing and placing the motor housing to be processed again. The pneumatic clamping assembly 4 leaving the arc bar 51 automatically returns to its original state, so that the reversing valve 42 in the pneumatic clamping assembly 4 is connected to the negative pressure box 63, so that the pneumatic clamp 41 in the pneumatic clamping assembly 4 clamps and locks the motor housing.

[0040] During the above working process, the detector 44 automatically senses whether the motor housing has been correctly placed, and automatically controls the drive motor 7 in conjunction with the push switch 1 511, the resistance reduction wheel 434 and the push switch 2 512, thereby achieving automatic parking.

[0041] The specific working process is as follows: first start the pressure pump 65, and the pressure pump 65 pumps the gas in the negative pressure box 63 into the high-pressure box 64, so that negative pressure is formed inside the negative pressure box 63, the negative pressure fixed ring 61 and the negative pressure rotating ring 21, and high pressure is formed inside the high-pressure box 64, the high-pressure fixed ring 62 and the high-pressure rotating ring 22. After reaching the predetermined pressure, the pressure pump 65 automatically stops running.

[0042] The operator starts the drive motor 7 to drive the vertical shaft 2 and the turntable 3 to rotate. When one of the pneumatic clamping assemblies 4 runs to the involute strip 52, the resistance reduction wheel 434 on the rotating arm 433 in the pneumatic clamping assembly 4 enters the involute strip 52 and rolls in contact with the involute strip 52. Under the guidance of the involute strip 52, the rotating arm 433 gradually rotates until the resistance reduction wheel 434 enters the arc strip 51 and the rotation angle of the rotating arm 433 reaches the maximum limit. During this process, the rotating arm 433 compresses the piston telescopic rod 1 431 and presses the hydraulic oil into the piston telescopic rod 2 432 through the oil pipe 435, causing the piston telescopic rod 2 432 to extend. The telescopic part of the piston telescopic rod 2 432 pushes the eccentric rod 423 to rotate, thereby rotating the three-way rotor 421 and making the T-shaped through hole 422 connect to the air pipe 1 416 and the air pipe 3 425 ( Figure 9 The state in which the air pipe 2 424 is blocked, and the high-pressure gas in the high-pressure box 64 enters the high-pressure rotating ring 22 through the high-pressure fixed ring 62 and the air pipe 5 24, and enters the cylinder 412 through the air pipe 3 425, the T-shaped through-hole 422, and the air pipe 1 416, so that the air cylinder 412 in the pneumatic clamping assembly 4 extends, and the telescopic portion of the cylinder 412 pushes the clamping strip 413 upward, so that the clamping strip 413 opens ( Figure 9 At this time, the operator places the motor housing to be processed on the turntable 3 at the pneumatic clamping assembly 4, puts it on the limiting column 31, and ensures that the position of the motor housing to be processed is accurate and can press the elastic sliding column 441.

[0043] When the pneumatic clamping assembly 4 leaves the arc strip 51, the resistance reduction wheel 434 leaves the arc strip 51, and the spring provided inside the piston telescopic rod 1 431 causes the piston telescopic rod 1 431 to extend. Under the action of the hydraulic oil, the piston telescopic rod 2 432 contracts, causing the eccentric rod 423 to rotate in the opposite direction to the initial state, thereby causing the three-way rotor 421 to rotate in the opposite direction. The T-shaped through hole 422 connects the air pipe 1 416 and the air pipe 2 424, while the air pipe 3 425 is blocked ( Figure 6 (The figure shows the right half of the state in the figure). The negative pressure of the negative pressure box 63 causes the gas in the cylinder 412 to quickly pass through the air pipe 1 416, the T-shaped through hole 422, and the air pipe 2 424 and enter the negative pressure swivel 21, thereby causing the cylinder 412 to contract rapidly. The telescopic portion of the cylinder 412 pulls the clamping strip 413 downward, causing the clamping strip 413 to press against the edge of the motor housing, thereby clamping and locking the motor housing.

[0044] The subsequent pneumatic clamping assembly 4 clamps and locks the subsequent motor housing in the same manner.

[0045] When the machined motor housing returns to the arc-shaped bar 51 , the pneumatic clamp 41 is opened, and the operator takes out the machined motor housing and places a new motor housing to be machined thereon for assembly line processing.

[0046] In the above process, the detector 44 will automatically sense whether the motor housing is correctly placed. When the motor housing is correctly placed, the motor housing presses down the elastic slide 441, and the dial button 443 on the elastic slide 441 moves downward. The slide rod 442 extends to the outside of the turntable 3 through the action of the oblique bar hole 444, and the pressing wheel 445 will contact the pressing switch 1 511 during the movement and press the pressing switch 1 511. When the pressing wheel 445 first contacts the pressing switch 1 511, the pressing switch 1 511 is closed. At this time, the resistance reduction wheel 434 has not yet contacted the pressing switch 2 512. , the push switch 2 512 is in a closed state, and after the resistance reduction wheel 434 contacts the push switch 2 512, the push switch 2 512 is disconnected. Since the push switch 1 511 is in a closed state at this time, the drive motor 7 continues to run. Subsequently, the resistance reduction wheel 434 leaves the push switch 2 512, and the push switch 2 512 is closed. Finally, the push wheel 445 leaves the push switch 1 511, and the push switch 1 511 is disconnected. The above process is a normal working process. The drive motor 7 can maintain continuous power supply under the action of the push switch 1 511 and the push switch 2 512.

[0047] However, when an unexpected situation occurs, that is, the operator forgets to put a new motor shell to be processed, or the motor shell is placed in an inaccurate position, the elastic slide 441 cannot be pressed, and the slide bar 442 cannot extend to the outside of the turntable 3. At this time, the pressing wheel 445 will not contact the pressing switch 1 511 during movement. When the pressing wheel 445 moves to the pressing switch 1 511, the pressing switch 1 511 is still in the disconnected state. When the resistance reduction wheel 434 contacts the pressing switch 2 512, the pressing switch 2 512 is disconnected. At this time, both the pressing switch 1 511 and the pressing switch 2 512 are in the disconnected state, and the drive motor 7 will be powered off and stop running, thereby realizing automatic parking. After the motor shell is placed, the elastic slide 441 will make the pressing wheel 445 automatically contact the pressing switch 1 511, thereby automatically starting.

[0048] When the air pressure difference between the negative pressure box 63 and the high pressure box 64 is insufficient, the pressure pump 65 automatically operates to restore the air pressure inside the negative pressure box 63 and the high pressure box 64 .

[0049] The present invention and its embodiments are described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto.

Claims

1. A motor housing clamping tool, comprising a base (1), a vertical shaft (2) rotatably arranged on the upper wall of the base (1), and a turntable (3) coaxially fixedly arranged on the upper end of the vertical shaft (2), characterized in that: A pneumatic clamping assembly (4) is provided through the annular array on the turntable (3), and a guide bar (5) is fixedly provided on the upper wall of the base (1). The guide bar (5) is located on the periphery of the edge of the turntable (3). The guide bar (5) cooperates with the pneumatic clamping assembly (4) to switch and control the clamping and unlocking states of the pneumatic clamping assembly (4). The pneumatic clamping assembly (4) includes a pneumatic clamp (41), a reversing valve (42), a reversing power member (43) and a detector (44). The pneumatic clamp (41) is provided through the turntable (3). The reversing valve (42) is fixedly arranged on the lower wall of the turntable (3), the pneumatic clamp (41) is connected to the reversing valve (42), the reversing power member (43) is arranged on the lower wall of the turntable (3), the reversing power member (43) and the reversing valve (42) are arranged in a transmission manner, the reversing power member (43) cooperates with the guide bar (5), the guide bar (5) contacts and presses the reversing power member (43), switches the state of the reversing power member (43), controls the reversing valve (42) to switch the airflow direction, and the detector (44) is arranged on the edge of the turntable (3); The pneumatic clamp (41) is composed of a hinge seat (411), a cylinder (412) and a clamping strip (413), wherein the hinge seat (411) is fixedly arranged on the upper wall of the turntable (3), the base portion of the cylinder (412) is fixedly arranged on the lower wall of the turntable (3), the telescopic portion of the cylinder (412) passes through the upper wall of the turntable (3), one end of the clamping strip (413) is rotatably arranged on the hinge seat (411), the middle portion of the clamping strip (413) is movably connected to the upper end of the telescopic portion of the cylinder (412), and the base portion of the cylinder (412) is communicated with the circumferential wall of the reversing valve (42); A three-way rotor (421) is provided for rotation inside the reversing valve (42), and an eccentric rod (423) is provided for rotation on the outer wall of the reversing valve (42). The rotating shaft of the eccentric rod (423) passes through the reversing valve (42) and is fixedly connected to the three-way rotor (421). The reversing power member (43) is composed of a piston telescopic rod 1 (431), a piston telescopic rod 2 (432) and a rotating arm (433). One end of the rotating arm (433) is rotatably arranged on the lower wall of the turntable (3). The outer end of the rotating arm (433) corresponds to the guide bar (5). The base portion of the piston telescopic rod 1 (431) is rotatably arranged on the lower wall of the turntable (3). The telescopic portion of the piston telescopic rod 1 (431) is rotatably connected to the middle portion of the rotating arm (433). The base portion of the piston telescopic rod 2 (432) is rotatably arranged on the lower wall of the turntable (3). The telescopic portion of the piston telescopic rod 2 (432) is rotatably connected to the eccentric end of the eccentric rod (423). The base portions of the piston telescopic rod 1 (431) and the piston telescopic rod 2 (432) are connected through each other.

2. The motor housing clamping tool according to claim 1, characterized in that: The detector (44) is composed of an elastic sliding column (441) and a sliding rod (442). The elastic sliding column (441) is vertically slidably arranged on the upper wall of the turntable (3), and the sliding rod (442) is horizontally slidably arranged on the circumferential side wall of the turntable (3). The elastic sliding column (441) and the sliding rod (442) are arranged for tilting transmission.

3. The motor housing clamping tool according to claim 2, characterized in that: A push switch 1 (511) and a push switch 2 (512) are provided on the guide bar (5). The push switch 1 (511) is located on the motion path of the outer end of the slide bar (442), and the push switch 2 (512) is located on the motion path of the outer end of the rotating arm (433).

4. The motor housing clamping tool according to claim 1, characterized in that: An air supply assembly (6) is provided on the upper wall of the base (1), and a coaxial fixed sleeve in the middle of the vertical shaft (2) is provided with a negative pressure rotating ring (21) and a high pressure rotating ring (22). The negative pressure rotating ring (21) and the high pressure rotating ring (22) are respectively connected to the circumferential wall of the reversing valve (42), and the negative pressure rotating ring (21) and the high pressure rotating ring (22) are respectively connected to the air supply assembly (6) through the vertical shaft (2).

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