Middle motor shell tool clamp

Abstract

The utility model relates to the technical field of clamps, in particular to a centrally-mounted motor shell tool clamp which comprises a base and a plurality of fixing columns used for bearing half shells, the fixing columns are perpendicularly arranged on the base, the end faces, away from the base, of the fixing columns abut against mounting holes of the half shells, and the fixing columns are arranged on the base. The base is further provided with a pressing assembly used for pressing the edges of the half shells from top to bottom. The semi-shell grinding device has the effects of improving the stability of the semi-shell grinding process and improving the assembly precision of the middle motor shell.

Description

Technical Field

[0001] The present application relates to the technical field of fixtures, and in particular to a tooling fixture for a central motor housing. Background Art

[0002] A mid-mounted motor is a DC motor. A rotor and a stator are installed inside the housing of the mid-mounted motor. The rotor is composed of a magnet and a shaft. The stator is usually composed of an iron core and a coil. Current flows through the coil. In the field of electric power-assisted bicycles, a mid-mounted motor refers to the driving motor of an electric power-assisted bicycle. The mid-mounted motor is installed at the pedal position of the vehicle body, connected to the vehicle body, and connected to the rear wheel through a chain to transmit power.

[0003] The housing of the mid-mounted motor is usually composed of two symmetrical half shells. Several mounting holes for the connectors are set circumferentially on the half shells. The two half shells are fastened and fixed by the connectors. In order to improve the structural stability of the housing and provide good support and protection for the internal structure, the housing assembly accuracy is required to be high. The contact surfaces of the two half shells need to fit perfectly, so the contact surfaces need to be polished.

[0004] In the prior art, grinding machines and other auxiliary tools are usually used for grinding. The half shell is placed on the grinding machine and held manually or with auxiliary tools to improve the stability of the half shell during the grinding process. However, during the operation of the grinding machine, the friction between the grinding head and the half shell will inevitably cause shaking. Manually holding the half shell will cause relative displacement between the half shell and the grinding head, reducing the grinding accuracy of the half shell. Utility Model Content

[0005] In order to improve the stability of the half-shell grinding process and improve the assembly accuracy of the mid-mounted motor housing, the present application provides a tooling fixture for the mid-mounted motor housing.

[0006] The mid-mounted motor housing fixture provided in this application adopts the following technical solution:

[0007] A central motor housing fixture comprises a base and a plurality of fixing columns for supporting a half shell, wherein each of the fixing columns is vertically arranged on the base, and the end surface of the fixing column away from the base abuts against the mounting hole position of the half shell. A clamping assembly for clamping the edge of the half shell from top to bottom is also arranged on the base.

[0008] By adopting the above technical solution, by vertically setting multiple fixing columns on the base, the half shell can be supported, and the end face of each fixing column abuts against the installation hole position of the half shell, so that the half shell can be pre-fixed, and the edge of the half shell can be clamped and fixed through the cooperation effect of the clamping assembly to prevent displacement or shaking during the grinding process, thereby improving the stability of the grinding process. The fixation of the half shell by the fixture allows the half shell to maintain a constant position and posture during the grinding process, making the contact surface of the half shell after grinding smoother, reducing the error during assembly, and helping to improve the assembly accuracy of the mid-mounted motor housing.

[0009] Furthermore, the base is provided with a pre-fixed column, which is vertically arranged on the base, and a positioning convex pile for extending into the mounting hole is integrally arranged on the end surface of the pre-fixed column away from the base.

[0010] By adopting the above technical solution, the positioning convex pile can extend into the mounting hole of the half shell at the position above the pre-fixing column, which, on the one hand, plays a pre-fixing effect on the half shell on the fixture, ensuring that the position of the half shell on the fixture is accurate. On the other hand, the positioning convex pile can also prevent the half shell from sliding or rotating during the grinding process, further enhancing the stability of positioning.

[0011] Furthermore, the diameter of the positioning protruding pile gradually decreases from an end connected to the pre-fixing column to an end away from the pre-fixing column.

[0012] By adopting the above technical solution, the gradually reduced diameter of the positioning convex pile can play a guiding role. As the positioning convex pile is gradually inserted into the mounting hole of the half shell, the positioning convex pile can gradually adapt to the size of the mounting hole until it is fully inserted, making the pre-fixing process of the half shell smoother and reducing the insertion difficulty caused by size mismatch. The gradual reduction in the diameter of the positioning convex pile allows the positioning convex pile to fit the hole wall more closely after being inserted into the mounting hole, enhancing the stability of the half shell on the fixture and helping to reduce displacement caused by vibration or external force. As the diameter of the positioning convex pile gradually decreases, the fixture can adapt to mounting holes of different sizes within a certain range, increasing the flexibility and versatility of the fixture, so that the same fixture can be used for half shells of various models and specifications.

[0013] Furthermore, the clamping assembly is arranged on the base and is located adjacent to the fixed column. The clamping assembly includes a clamping head, a steering member and a first pushing member for driving the clamping head. The clamping head is rotatably connected to the top of the first pushing member, and the two ends of the steering member are respectively rotatably connected to the side walls of the clamping head and the first pushing member.

[0014] By adopting the above technical solution, the setting of the steering member enables the end of the clamping head used for clamping to change direction on the first pushing member. When the pushing member is pushed up, the clamping head presses the edge of the half shell downward through the steering member, the pushing member retracts downward, and the clamping head bounces off the half shell through the steering member.

[0015] Furthermore, the first pushing member is arranged on the base, and the first pushing member includes a first cylinder body and a first pushing rod. The clamping head is rotatably connected to the end of the first pushing rod. A mounting seat for connecting the steering member is provided on the side of the first cylinder body close to the fixed column. The two ends of the steering member are respectively rotatably connected to the mounting seat and the middle position of the side wall of the clamping head.

[0016] By adopting the above technical solution, the mounting seat enables the steering member to be stably connected to the first cylinder body, and the steering member is rotatably connected to the middle position of the side wall of the clamping head, so that the clamping head changes direction through the steering member. At the same time, this layout helps to improve the stability of the entire clamping assembly, reduce the displacement caused by vibration or external force during the grinding process, and ensure the stability of the half shell and the grinding quality.

[0017] Furthermore, the central motor housing fixture also includes a top support assembly, each of the fixed columns is circumferentially arranged around the top support assembly, and the top support assembly includes a top support column for supporting the half shell and a second pushing member for driving the top support column.

[0018] By adopting the above technical solution, the top support assembly enables the fixture to achieve all-round support for the half shell. The fixed columns are arranged circumferentially around the top support assembly and work together with the top support columns to ensure that the half shell is stably supported at multiple points. The top support columns work together with the fixed columns to form a support frame that can withstand the weight of the half shell and the impact force during the grinding process. This all-round support helps to reduce the deformation and displacement of the half shell during the grinding process.

[0019] Furthermore, the second pushing member includes a second cylinder body and a second pushing rod, the second cylinder body is arranged on the base, and the supporting column is fixedly connected to the end of the second pushing rod.

[0020] By adopting the above technical solution, the second cylinder drives the second push rod, so that the top support column can be stably raised and lowered to achieve accurate support for the half shell. The top support column can be raised and lowered by the second push member to adapt to different heights and shapes on the half shell. The lifting mechanism ensures that the top support column will not shake or deviate during operation, thereby ensuring the stability and safety of the half shell.

[0021] Furthermore, a shielding cover is sleeved on the outer side wall of the top support column, and the shielding cover is fixedly connected to the middle position of the outer side wall of the top support column.

[0022] By adopting the above technical solution, the second pushing member is closer to the position of the half shell that needs to be polished, the lower end of the top support column is connected to the second pushing rod, and the shielding cover is arranged at the middle position of the top support column. It can prevent the splashes or debris generated during the polishing process from adhering to the second pushing rod or even entering the second cylinder body, thereby protecting the second pushing member from damage and helping to extend the service life of the second pushing member.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The design of the fixing column and the clamping assembly realizes the stable fixation of the half shell. The fixing column is vertically arranged on the base, and the end face abuts against the mounting hole of the half shell to play a pre-fixing role. The clamping assembly presses the edge of the half shell from top to bottom through the clamping head to ensure that the half shell will not be displaced or shaken during the grinding process, thereby improving the stability of the grinding process and helping to improve the assembly accuracy of the mid-mounted motor housing;

[0025] 2. The introduction of the top support assembly realizes all-round support for the half shell. The fixed columns are arranged around the top support assembly and work together with the top support column to ensure that the half shell can be stably supported at multiple points. The deformation and displacement of the half shell during the grinding process are reduced, and the grinding quality and assembly accuracy are improved. At the same time, the lifting and adjustment function of the top support column enables the fixture to adapt to half shells of different heights and shapes, enhancing the versatility and flexibility of the fixture;

[0026] 3. A shielding cover is set on the outer wall of the top support column to effectively prevent the splashes or debris generated during the grinding process from damaging the second pusher. The shielding cover protects the second pusher and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure in which the central motor housing is placed on a fixture in an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the explosion structure of the central motor housing and the fixture in the embodiment of the present application.

[0029] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure of the positioning convex pile in part A.

[0030] Figure 4 It is an enlarged schematic diagram of the structure of the clamping assembly in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the structural explosion of the top support assembly in the embodiment of the present application.

[0032] Explanation of the reference numerals: 0, shell; 01, mounting hole; 1, base; 11, flat operating table; 12, fixing member; 2, fixing column; 3, clamping assembly; 31, clamping head; 32, steering member; 33, first pushing member; 331, first cylinder body; 332, first pushing rod; 333, mounting seat; 4, pre-fixing column; 41, positioning convex pile; 5, supporting assembly; 51, supporting column; 511, shielding cover; 52, second pushing member; 521, second cylinder body; 522, second pushing rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-5 And embodiments, the present application is further described in detail.

[0034] The embodiment of the present application discloses a central motor housing fixture. Figure 1 and Figure 2 A plurality of mounting holes 01 for inserting connectors are circumferentially opened at the edge of the middle motor housing 0, and the middle motor housing 0 is clamped and fixed on the middle motor housing fixture.

[0035] The central motor housing fixture includes a horizontal operating table 11, a base 1, a fixing column 2, a pre-fixing column 4, a clamping assembly 3 and a top support assembly 5. The base 1 is provided on the horizontal operating table 11 for fixing other components, and a fixing member 12 for fixing the base 1 is provided on the horizontal operating table 11. The fixing member 12 is symmetrically arranged on both sides of the base 1 and is screwed to the horizontal operating table 11.

[0036] Reference Figure 2 and Figure 3 , the fixed column 2 and the pre-fixed column 4 are both vertically fixedly connected to the base 1. In this embodiment, the number of the fixed columns 2 is preferably three, and each fixed column 2 is dispersedly arranged on the base 1 and the connecting line of each distribution point is a triangle. In this embodiment, the number of the pre-fixed columns 4 is preferably two, and the two pre-fixed columns 4 are respectively arranged at adjacent positions of two of the fixed columns 2, and the height of each pre-fixed column 4 is consistent with that of each fixed column 2.

[0037] The upper end surface of the pre-fixing column 4 is coaxially and integrally provided with a positioning convex pile 41, which is arranged in a cone shape, and the diameter of the positioning convex pile 41 gradually decreases from the end connected to the pre-fixing column 4 to the end away from the pre-fixing column 4, and the number of the positioning convex piles 41 is two. When the half shell is placed on the fixing column 2 and the pre-fixing column 4, the upper end surface of the fixing column 2 abuts against the mounting hole 01 of the half shell, and the positioning convex pile 41 passes through the mounting hole 01 to position the half shell.

[0038] Reference Figure 2 and Figure 4In this embodiment, the number of the clamping assemblies 3 is preferably three, and each clamping assembly 3 is dispersedly arranged on the base 1 and the connecting line of each distribution point is a triangle, wherein two clamping assemblies 3 are respectively located at adjacent positions of two pre-fixed columns 4. The clamping assembly 3 includes a clamping head 31, a steering member 32 and a first pushing member 33. In this embodiment, the first pushing member 33 is preferably a cylinder with a certain supporting capacity, and the first pushing member 33 includes a first cylinder body 331 and a first pushing rod 332.

[0039] The first cylinder body 331 is installed on the horizontal operating table 11 and vertically passes through the base 1. The first push rod 332 is arranged on the first cylinder body 331, and the pressing head 31 is rotatably connected to the upper end of the first push rod 332. A mounting seat 333 for mounting the steering member 32 is arranged on the side of the first cylinder body 331 facing the fixed column 2. The mounting seat 333 is threadedly fixed to the upper end surface of the first cylinder body 331. The two ends of the steering member 32 are rotatably connected to the mounting seat 333 and the middle position of the side of the pressing member. When the first push rod 332 is pushed up, the pressing member realizes the downward pressing effect through the steering member 32 and is pressed at the edge position of the half shell.

[0040] Reference Figure 2 and Figure 5 In this embodiment, the number of the supporting components 5 is preferably four, and each fixing column 2, each pre-fixing column 4 and each pressing component 3 are circumferentially distributed on the periphery of each supporting component 5. The supporting component 5 includes a supporting column 51 and a second pushing member 52. In this embodiment, the second pushing member 52 is preferably a cylinder with a certain supporting capacity, and the second pushing member 52 includes a second cylinder body 521 and a second pushing rod 522.

[0041] The second cylinder 521 is installed on the horizontal operating table 11 and vertically passes through the base 1. The second push rod 522 is arranged on the second cylinder 521. The top support column 51 is coaxially arranged and fixedly connected to the upper end of the second push rod. Since the distance between the top support assembly 5 and the grinding position of the half shell is small, a shielding cover 511 for preventing dust from entering the second cylinder 521 is arranged on the outer wall of the top support column 51. The shielding cover 511 and the top support column 51 are coaxially arranged and threadedly connected.

[0042] The implementation principle of the central motor housing fixture in the embodiment of the present application is as follows: the fixture realizes stable support of the central motor housing 0 through the fixing column 2 and the pre-fixing column 4. The fixing column 2 is vertically arranged on the base 1, and the end face of the fixing column 2 abuts against the mounting hole 01 of the half shell. The pre-fixing column 4 is provided with a positioning convex pile 41, which can extend into the mounting hole 01, and plays a role in positioning and pre-fixing the half shell, ensuring the position and stability of the half shell on the fixture, reducing the displacement or shaking of the half shell during the grinding process, and improving the stability of the grinding process.

[0043] The fixture clamps and fixes the edge of the half shell through the clamping assembly 3. The first pushing member 33 drives the clamping head 31 to achieve a downward pressing effect through the steering member 32, and firmly presses the edge of the half shell on the fixture to prevent the half shell from loosening or shifting due to vibration or external force during the grinding process.

[0044] The top support assembly 5 provides multi-point support for the half shell under the half shell. The top support assembly 5 includes a top support column 51 and a second pusher 52. The top support column 51 can be raised and lowered under the drive of the second pusher 52 to adapt to different heights and shapes on the half shell, which helps to reduce the deformation and displacement of the half shell during the grinding process, and improves the grinding quality and assembly accuracy. A shielding cover 511 is set on the outer wall of the top support column 51 to prevent the splashes or debris generated during the grinding process from damaging the second pusher 52.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be included in the protection scope of the present application. In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the present embodiment can be set in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

Claims

1. The central motor housing fixture is characterized by: It comprises a base (1) and a plurality of fixing columns (2) for supporting a half shell, each of the fixing columns (2) being vertically arranged on the base (1), and the end surface of the fixing column (2) away from the base (1) abuts against the installation hole position of the half shell, and the base (1) is also provided with a clamping assembly (3) for clamping the edge of the half shell from top to bottom; The clamping assembly (3) is arranged on the base (1) and is located adjacent to the fixed column (2). The clamping assembly (3) comprises a clamping head (31), a steering member (32) and a first pushing member (33) for driving the clamping head (31). The clamping head (31) is rotatably connected to the top of the first pushing member (33), and the two ends of the steering member (32) are rotatably connected to the side walls of the clamping head (31) and the first pushing member (33), respectively.

2. The central motor housing fixture according to claim 1 is characterized in that: The base (1) is provided with a pre-fixing column (4), the pre-fixing column (4) being vertically arranged on the base (1), and a positioning convex pile (41) for extending into the installation hole is integrally arranged on the end surface of the pre-fixing column (4) away from the base (1).

3. The central motor housing fixture according to claim 2 is characterized in that: The diameter of the positioning protruding pile (41) gradually decreases from an end connected to the pre-fixing column (4) to an end away from the pre-fixing column (4).

4. The central motor housing fixture according to claim 1, characterized in that: The first pushing member (33) is arranged on the base (1), and the first pushing member (33) includes a first cylinder body (331) and a first pushing rod (332). The clamping head (31) is rotatably connected to the end of the first pushing rod (332). A mounting seat (333) for connecting the steering member (32) is arranged on one side of the first cylinder body (331) close to the fixed column (2), and the two ends of the steering member (32) are respectively rotatably connected to the mounting seat (333) and the middle position of the side wall of the clamping head (31).

5. The central motor housing fixture according to claim 1, characterized in that: It also includes a top support assembly (5), each of the fixed columns (2) is circumferentially arranged around the top support assembly (5), and the top support assembly (5) includes a top support column (51) for supporting the half shell and a second pushing member (52) for driving the top support column (51).

6. The central motor housing fixture according to claim 5, characterized in that: The second pushing member (52) comprises a second cylinder body (521) and a second pushing rod (522); the second cylinder body (521) is arranged on the base (1); and the supporting column (51) is fixedly connected to the end of the second pushing rod (522).

7. The central motor housing fixture according to claim 6, characterized in that: A shielding cover (511) is sleeved on the outer side wall of the top support column (51), and the shielding cover (511) is fixedly connected to the middle position of the outer side wall of the top support column (51).

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