A telescopic motor shell clamping tool

Abstract

The application discloses a telescopic motor shell clamping tool, which comprises a base, the base comprising an outer cylinder, an inner cylinder and a bottom plate; the outer cylinder and the inner cylinder are coaxially fixedly connected to the bottom plate; a limiting groove is formed on the inner side of the outer cylinder in the circumferential direction at equal intervals, and is matched with a limiting boss of a target motor shell; a plurality of clamping mechanisms are arranged, the plurality of clamping mechanisms are distributed around the outer cylinder at equal intervals in the circumferential direction, and are fixedly connected to the bottom plate; the number of the clamping mechanisms is consistent with the number of the limiting grooves, and the positions of the clamping mechanisms are matched with the limiting grooves, so that the target motor shell is fixed on the limiting grooves; and a telescopic mechanism is arranged between the outer cylinder and the inner cylinder, and is used for quickly resetting the target motor shell when the clamping mechanism is loosened. The application aims to provide a compact, simple and reliable device, which can effectively improve the machining precision and production efficiency of the motor shell, reduce the production cost, and meet the demand of modern motor production.

Description

Technical Field

[0001] This application relates to a retractable motor housing clamping fixture, belonging to the field of motor processing and manufacturing technology. Background Technology

[0002] In the automotive motor manufacturing industry, the machining of the motor housing is a crucial step, as its precision and quality directly affect the overall performance and lifespan of the motor. During machining operations such as drilling, milling, and grinding, the motor housing needs to be stably fixed on the worktable to ensure the accuracy and consistency of the machining process.

[0003] Traditional methods of securing motor housings have several drawbacks. For example, using simple calipers or clamps for fixation is inefficient, and the housing is prone to displacement during machining due to vibration or cutting forces, affecting machining accuracy and increasing the product defect rate. Furthermore, while more complex fixtures can improve stability to some extent, they are typically structurally complex and cumbersome to operate, requiring significant time and manpower for clamping and disassembly, thus reducing production efficiency and increasing production costs.

[0004] With the continuous development of the motor industry and the increasing demands for production efficiency and product quality, the market urgently needs a tooling that can quickly, stably, and flexibly clamp motor housings. This motor housing clamping tooling was developed to address the aforementioned problems existing in current technologies. It aims to provide a compact, easy-to-operate, and reliable clamping device that can effectively improve the machining accuracy and production efficiency of motor housings, reduce production costs, and meet the needs of modern motor production.

[0005] This clamping fixture, through its unique design, ensures clamping force while enabling rapid clamping and disassembly, reducing auxiliary time in the production process and providing a strong guarantee for the efficient and high-precision machining of motor housings. Summary of the Invention

[0006] This application aims to provide a compact, easy-to-operate, and reliable clamping device that can effectively improve the machining accuracy and production efficiency of motor housings, reduce production costs, and meet the needs of modern motor production.

[0007] The technical problem to be solved in this application is achieved by the following technical solution: A retractable motor housing clamping fixture includes: The base includes an outer cylinder, an inner cylinder, and a bottom plate; the outer cylinder and the inner cylinder are coaxially and fixedly connected to the bottom plate; the inner side of the outer cylinder is provided with equidistant locating grooves along the circumferential direction, which are adapted to the locating bosses of the target motor housing; The clamping mechanism is provided in multiple ways. The multiple clamping mechanisms are distributed around the outer cylinder at equal intervals in the circumference and are all fixedly connected to the base plate. The number of clamping mechanisms is the same as the number of limiting grooves, and the position of the clamping mechanism is adapted to the limiting groove, for fixing the target motor housing on the limiting groove. A telescopic mechanism is disposed between the outer cylinder and the inner cylinder, and is used to quickly reset the target motor housing when the clamping mechanism is released.

[0008] Preferably, the telescopic mechanism includes: Sliding components are slidably connected to the outer cylinder and the inner cylinder, respectively; A reset spring is sleeved on the inner cylinder, with one end fixedly connected to the sliding member and the other end fixedly connected to the base plate.

[0009] Preferably, the inner wall of the outer cylinder is provided with multiple slide bars at equal intervals in the circumferential direction, and the sliding member is provided with slide grooves at equal intervals in the circumferential direction that are adapted to the slide bars, and the sliding member is slidably connected to the slide bars.

[0010] Preferably, the sliding member is provided with a snap-fit ​​part, which is used to snap into the annular sealing groove of the target motor housing.

[0011] Preferably, the slide bar is provided with an internal thread structure, and an adjusting screw is screwed onto the internal thread structure. The adjusting screw makes appropriate adjustments according to the annular sealing groove of different depths.

[0012] Preferably, the clamping mechanism includes: The cylinder assembly is fixedly connected to the base plate; A locking assembly is hinged to the cylinder assembly. The locking assembly has a locking position and an unlocking position. When the locking assembly is in the locking position, it abuts against the limiting boss. When the locking assembly is in the unlocking position, it separates from the limiting boss.

[0013] Preferably, the locking assembly includes: The movable rod is hinged to the cylinder assembly via a pin; The clamping arm is hinged to the movable rod and the piston rod of the cylinder assembly via pins.

[0014] Preferably, the cylinder assembly includes: The cylinder body is fixedly connected to the base plate, and a pin support is provided on the cylinder body. The pin support is hinged to the movable rod through a pin. A piston is slidably connected to the cylinder body, and the piston divides the cylinder body into a rod chamber and a rodless chamber; The piston rod is slidably connected to the cylinder body and fixedly connected to the piston. The piston rod is also hinged to the clamping arm via a pin. Both the rod-type chamber and the rodless chamber are connected to an air inlet and an air outlet.

[0015] Preferably, a first sealing ring and a second sealing ring are fitted on the piston to prevent gas leakage between the two chambers of the cylinder, ensure the working pressure and efficiency of the cylinder, and at the same time prevent direct metal-to-metal contact between the piston and the cylinder body, thereby reducing wear.

[0016] Preferably, the piston rod is fitted with a third sealing ring and a fourth sealing ring to prevent gas leakage from the rod chamber.

[0017] The beneficial effects of this application are: 1. Stable clamping: Through the cooperation of the limiting groove of the base and the clamping mechanism, the motor housing can be firmly fixed on the tooling, ensuring stability during the processing.

[0018] 2. High adaptability: The adjusting screw of the telescopic mechanism can be adjusted according to the depth of the annular sealing groove of different motor housings, which improves the versatility of the tooling and can adapt to motor housings of different specifications.

[0019] 3. Easy to operate: The clamping mechanism is driven by a cylinder. Locking and unlocking operations can be achieved by controlling the air inlet and outlet of the cylinder, which is simple and quick.

[0020] 4. Quick reset: The return spring of the telescopic mechanism can quickly reset the motor housing when the clamping mechanism is released, which improves work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of this application. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of this application. Figure 2 ; Figure 3 This is a schematic cross-sectional view of the base structure of this application; Figure 4 This is a three-dimensional structural diagram of the clamping mechanism of this application; Figure 5 This is a cross-sectional structural schematic diagram of the clamping mechanism of this application; Figure 6 This is a three-dimensional structural diagram of the target motor housing of this application.

[0022] In the diagram: 1. Outer cylinder; 101. Limiting groove; 102. Sliding bar; 103. Adjusting screw; 2. Inner cylinder; 3. Base plate; 4. Clamping mechanism; 401. Cylinder body; 402. Piston; 403. First sealing ring; 404. Second sealing ring; 405. Piston rod; 406. Third sealing ring; 407. Fourth sealing ring; 408. Movable rod; 409. Clamping wall; 410. Rod cavity; 411. Rodless cavity; 5. Sliding part; 501. Snap-fit ​​part; 6. Return spring; 7. Target motor housing; 701. Annular sealing groove; 702. Limiting boss. Detailed Implementation

[0023] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this application, the following description, in conjunction with specific illustrations, further elaborates on this application.

[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of the embodiments of this application. To simplify the disclosure of the embodiments of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in the embodiments of this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0028] like Figures 1-6 As shown, a telescopic motor housing clamping fixture includes: an outer cylinder 1, an inner cylinder 2, a base plate 3, a clamping mechanism 4, and a telescopic mechanism.

[0029] The base consists of an outer cylinder 1, an inner cylinder 2, and a base plate 3. Specifically, the outer cylinder 1 and the inner cylinder 2 are coaxially and fixedly connected to the base plate 3. Multiple limiting grooves 101 are evenly spaced along the circumferential direction on the inner side of the outer cylinder 1, and these limiting grooves 101 are adapted to the limiting bosses 702 of the target motor housing 7. Multiple clamping mechanisms 4 are provided, and these clamping mechanisms 4 are evenly distributed around the outer cylinder 1 and are all fixedly connected to the base plate 3 by bolts. The number of clamping mechanisms 4 is the same as the number of limiting grooves 101, and the positions of the clamping mechanisms 4 are adapted to the limiting grooves 101, used to fix the target motor housing 7 onto the limiting grooves 101. A telescopic mechanism is provided between the outer cylinder 1 and the inner cylinder 2, used to quickly reset the target motor housing 7 when the clamping mechanism 4 is released.

[0030] As a further preferred embodiment, the telescopic mechanism includes: a sliding member 5, which is slidably connected to the inner wall of the outer cylinder 1 and the outer wall of the inner cylinder 2 respectively; and a return spring 6, which is sleeved on the inner cylinder 2 and coaxially arranged with the inner cylinder 2, one end of the return spring 6 being welded and fixed to the bottom of the sliding member 5, and the other end being welded and fixed to the base plate 3. Specifically, the inner wall of the outer cylinder 1 is provided with multiple sliding strips 102 at equal intervals along its circumference, and the sliding member 5 is provided with sliding grooves at equal intervals along its circumference that are adapted to the sliding strips 102. The sliding member 5 is slidably connected to the sliding strips 102 through the sliding grooves to ensure that the sliding member 5 only moves along the axial direction of the outer cylinder 1. The sliding member 5 is provided with a snap-fit ​​part 501, which is used to snap-fit ​​with the annular sealing groove 701 of the target motor housing 7.

[0031] Furthermore, the slide bar 102 is provided with an internal thread structure, and an adjusting screw 103 is screwed onto the internal thread structure. The adjusting screw 103 can be adjusted according to the depth of the annular sealing groove 701 of different motor housings, which improves the versatility of the tooling and can adapt to motor housings of different specifications.

[0032] In a preferred embodiment, the clamping mechanism 4 includes: a cylinder assembly fixedly connected to the base plate 3; specifically, the cylinder assembly includes: a cylinder body 401, which is fixedly connected to the base plate 3 by bolts, and a pin support is provided on the cylinder body 401, the pin support being hinged to the movable rod 408 via a pin; a piston 402, which is slidably connected inside the cylinder body 401, and the piston 402 divides the cylinder body 401 into a rod chamber 410 and a rodless chamber 411; a first sealing ring 403 and a second sealing ring 404 are sleeved on the piston 402, both the first sealing ring 403 and the second sealing ring 404 being made of... The polytetrafluoroethylene (PTFE) sealing ring is used to prevent gas leakage between the two chambers of the cylinder, ensuring the working pressure and efficiency of the cylinder, and also preventing direct metal-to-metal contact between the piston 402 and the cylinder body 401, reducing wear. The piston rod 405 is slidably connected to the cylinder body 401 and fixedly connected to the piston 402. The piston rod 405 is also hinged to the clamping arm via a pin. A third sealing ring 406 and a fourth sealing ring 407 are fitted on the piston rod 405. The third sealing ring 406 and the second sealing ring 404 are both made of PTFE and are used to prevent gas leakage in the rod chamber 410. Both the rod-type chamber 410 and the rodless chamber 411 are connected to an air inlet and an air outlet. In use, the rod-type chamber 410 and the rodless chamber 411 are connected to the air source system via air pipes. It should be noted that the air source system is existing technology, consisting of an air compressor, a solenoid valve, and a control cabinet. The control cabinet consists of a control panel and a PLC, and the PLC is electrically connected to the control panel and the solenoid valve. The control panel has a locking position button and an unlocking position button. A locking assembly is hinged to the cylinder assembly. The locking assembly has a locking position and an unlocking position. When the locking assembly is in the locking position, it abuts against the limiting boss 702; when the locking assembly is in the unlocking position, it separates from the limiting boss 702. Specifically, the locking assembly includes: a movable rod 408, which is hinged to the cylinder assembly via a pin; and a clamping arm, which is hinged to the movable rod 408 and the piston rod 405 of the cylinder assembly via pins.

[0033] When the operator presses the locking button, the PLC receives the locking signal and sends a command signal to the solenoid valve. Upon receiving the extension signal, the solenoid valve activates, allowing compressed air to enter the rodless chamber 411 of the cylinder from the air source via the solenoid valve. At this time, the inlet of the rodless chamber 411 opens and the outlet closes, allowing compressed air to rapidly fill the rodless chamber 411, causing a sharp increase in pressure within it. This increased pressure pushes the piston 402 towards the rod chamber 410. As the piston 402 moves, the volume of the rod chamber 410 gradually increases, and the pressure within the chamber decreases. The outlet of the rod chamber 410 opens, and the inlet closes. Gas in the rod chamber 410 is discharged into the atmosphere through the outlet. The piston rod 405 extends under the action of the piston 402, pushing the clamping wall 409 to rotate around the movable rod 408 and locking the target motor housing 7 onto the base. When the piston rod 405 needs to be kept in the locked position, the solenoid valve is in the intermediate blocking state, cutting off the passage between the rodless chamber 411 and the rod chamber 410 and the air source and exhaust. At this time, the gas in the rodless chamber 411 and the rod chamber 410 is sealed, the pressure in the two chambers remains relatively stable, the piston 402 is balanced on both sides, and the piston rod 405 remains in a fixed position. When the operator presses the unlock button, the PLC receives the unlock signal and sends a command to the solenoid valve. When the solenoid valve receives the unlock signal, it switches its state, and compressed air enters the rod chamber 410 of the cylinder from the air source through the solenoid valve. The inlet of the rod chamber 410 opens and the outlet closes, allowing compressed air to enter and increase its pressure. This increased pressure in the rod chamber 410 pushes the piston 402 towards the rodless chamber 411. The volume of the rodless chamber 411 increases, and the pressure decreases. The outlet of the rodless chamber 411 opens and the inlet closes, allowing the gas inside to be discharged through the outlet. The piston rod 405 then retracts, causing the clamping wall 409 to rotate around the movable rod 408, disengaging the clamping wall 409 from contact with the limiting boss 702 of the target motor housing 7.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this application; all such changes and modifications fall within the scope of the claims. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A telescopic motor housing clamping fixture, characterized in that, include: The base includes an outer cylinder, an inner cylinder, and a bottom plate; the outer cylinder and the inner cylinder are coaxially and fixedly connected to the bottom plate; multiple limiting grooves are evenly spaced along the circumferential direction on the inner side of the outer cylinder, and the limiting grooves are adapted to the limiting bosses of the target motor housing; The clamping mechanism is provided in multiple ways. The multiple clamping mechanisms are distributed around the outer cylinder at equal intervals in the circumference and are all fixedly connected to the base plate. The number of clamping mechanisms is the same as the number of limiting grooves, and the position of the clamping mechanism is adapted to the limiting groove, for fixing the target motor housing on the limiting groove. A telescopic mechanism is disposed between the outer cylinder and the inner cylinder, and is used to quickly reset the target motor housing when the clamping mechanism is released.

2. The telescopic motor housing clamping fixture according to claim 1, characterized in that: The telescopic mechanism includes: Sliding components are slidably connected to the outer cylinder and the inner cylinder, respectively; A reset spring is sleeved on the inner cylinder, with one end fixedly connected to the sliding member and the other end fixedly connected to the base plate.

3. The telescopic motor housing clamping fixture according to claim 2, characterized in that: The inner wall of the outer cylinder is provided with multiple slide bars at equal intervals along the circumference, and the sliding member is provided with slide grooves at equal intervals along the circumference that are adapted to the slide bars. The sliding member is slidably connected to the slide bars.

4. The telescopic motor housing clamping fixture according to claim 3, characterized in that: The sliding member is provided with a snap-fit ​​part, which is used to snap into the annular sealing groove of the target motor housing.

5. The telescopic motor housing clamping fixture according to claim 4, characterized in that: The slide bar is provided with an internal thread structure, and an adjusting screw is screwed onto the internal thread structure. The adjusting screw makes appropriate adjustments according to the annular sealing groove of different depths.

6. A telescopic motor housing clamping fixture according to claim 1 or 5, characterized in that, The clamping mechanism includes: The cylinder assembly is fixedly connected to the base plate; A locking assembly is hinged to the cylinder assembly. The locking assembly has a locking position and an unlocking position. When the locking assembly is in the locking position, it abuts against the limiting boss. When the locking assembly is in the unlocking position, it separates from the limiting boss.

7. The telescopic motor housing clamping fixture according to claim 6, characterized in that: The locking assembly includes: The movable rod is hinged to the cylinder assembly via a pin; The clamping arm is hinged to the movable rod and the piston rod of the cylinder assembly via pins.

8. The telescopic motor housing clamping fixture according to claim 7, characterized in that, The cylinder assembly includes: The cylinder body is fixedly connected to the base plate, and a pin support is provided on the cylinder body. The pin support is hinged to the movable rod through a pin. A piston is slidably connected to the cylinder body, and the piston divides the cylinder body into a rod chamber and a rodless chamber; The piston rod is slidably connected to the cylinder body and fixedly connected to the piston. The piston rod is also hinged to the clamping arm via a pin. Both the rod-type chamber and the rodless chamber are connected to an air inlet and an air outlet.

9. A telescopic motor housing clamping fixture according to claim 8, characterized in that: The piston is fitted with a first sealing ring and a second sealing ring to prevent gas leakage between the two chambers of the cylinder, ensure the working pressure and efficiency of the cylinder, and at the same time prevent direct metal-to-metal contact between the piston and the cylinder body, thereby reducing wear.

10. A telescopic motor housing clamping fixture according to claim 9, characterized in that: The piston rod is fitted with a third sealing ring and a fourth sealing ring to prevent gas leakage from the rod chamber.

Images