Motor end cover processing tool

Abstract

The utility model relates to a relevant technical field of motor production especially relates to a motor end cover processing frock, including base, the gear linkage assembly of installing in the top of base, and a plurality of clamping assemblies are arranged on gear linkage assembly. The utility model discloses when driving motor drives center transmission pinion rotates, three groups of driven gear wheel can realize synchronous reverse motion, and then drive three groups of clamping assemblies to act in concert, solve the synchronous defect of traditional manual regulation or single drive single clamping structure, make end cover receive even circumferential hug tight force in the clamping process, aiming at the stress rotation, loose problem of traditional replaceable clamping head because of threaded connection, and the rigidity fixed structure of double bolt, fixed seat and round groove is adopted in this device, and the circumferential rotation of clamping head is limited through the axial compression of bolt, and the fixed stability is enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of electric motor production, and in particular to a tooling for machining electric motor end caps. Background Technology

[0002] The motor end cover is a key component of the motor, used to seal the internal structure of the motor and support the rotor bearing. Its machining accuracy directly affects the assembly quality and operational stability of the motor. During the machining process of the end cover, a special tooling is required to achieve stable clamping and avoid machining errors caused by vibration or displacement. Therefore, a special tooling for machining motor end covers is needed.

[0003] Currently, most tooling uses manual adjustment or a single-drive single-clamping structure. Multiple clamping components are difficult to achieve fully synchronized operation, resulting in uneven force on the end cap and easy micro-deformation. Some replaceable clamping heads are fixed by threaded connection between the clamping head and the clamping arm. During the clamping process, the clamping head is prone to rotation under force, which can lead to loosening and affect the clamping effect.

[0004] To address the aforementioned issues, a machining fixture for motor end caps is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for machining motor end caps, so as to solve the problem of the existing tooling for machining motor end caps mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tooling for machining an electric motor end cover, comprising a base, a gear linkage assembly mounted on the base, and a plurality of clamping assemblies disposed on the gear linkage assembly; The gear linkage assembly includes a base plate, a transmission pinion, a driven gear meshing with the transmission pinion, a top plate, and a drive motor for driving the transmission pinion to rotate. The transmission pinion and the driven gear are disposed between the base plate and the top plate. The clamping assembly includes a clamping head, a first fixed seat, a second fixed seat, and bolts. The clamping head passes through the extension section of the driven large gear. The first fixed seat and the second fixed seat are both fixed at the bottom of the extension section of the driven large gear, and the bottom of the clamping head is located between the first fixed seat and the second fixed seat, and is connected by bolts.

[0007] Preferably, the clamping assembly further includes protrusions and a circular groove. The clamping head is uniformly glued with protrusions around its periphery, and the bottom of the clamping head is provided with a circular groove that matches the bolt, so that the bolt can pass through the second fixing seat and the circular groove to connect with the first fixing seat.

[0008] Preferably, the transmission pinion is rotatably mounted at the center of the base plate, and the driven large gear is provided in three sets, with each set of driven large gears corresponding to one of the clamping components.

[0009] Preferably, the transmission pinion is connected to the output shaft of the drive motor.

[0010] Preferably, the base has three sets of bottom mounting holes, which are arranged in a ring on the base.

[0011] Preferably, the base has three sets of connecting columns arranged in a ring on the base for connecting the base and the bottom plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This device adopts a linkage structure of a central drive pinion and three sets of driven large gears. The three sets of driven large gears are symmetrically distributed at 120° along the triangular base plate. When the drive motor drives the central drive pinion to rotate, the three sets of driven large gears can achieve synchronous reverse movement, thereby driving the three sets of clamping components to work together. This solves the synchronization defects of traditional manual adjustment or single drive single clamping structures, so that the end cap is subjected to a uniform circumferential clamping force during the clamping process. To address the issues of rotation and loosening caused by threaded connections in traditional replaceable clamping heads, this device employs a rigid fixing structure consisting of double bolts, a fixed base, and a circular groove. The axial clamping force of the bolts restricts the circumferential rotation of the clamping head, enhancing its stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the gear linkage assembly of this utility model; Figure 3 This is a partial structural schematic diagram of the gear linkage assembly of this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the clamping component of this utility model.

[0014] In the diagram: 1. Base; 2. Gear linkage assembly; 201. Base plate; 202. Transmission pinion; 203. Driven gear; 204. Top plate; 205. Drive motor; 3. Clamping assembly; 301. Clamping head; 302. First fixed seat; 303. Second fixed seat; 304. Protrusion; 305. Circular groove; 306. Bolt; 4. Bottom mounting hole; 5. Connecting column. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Example like Figure 1-3 As shown, the assembly includes a base 1, a gear linkage assembly 2 mounted on the base 1, and multiple clamping assemblies 3 disposed on the gear linkage assembly 2. The base 1 has three sets of bottom mounting holes 4 arranged in a ring on the base 1, and three sets of connecting posts 5 arranged in a ring on the base 1 for connecting the base 1 and the gear linkage assembly 2. The gear linkage assembly 2 includes a base plate 201, a transmission pinion 202, a driven gear 203 meshing with the transmission pinion 202, a top plate 204, and a drive motor 205 for driving the transmission pinion 202 to rotate. The transmission pinion 202 and the driven gear 203 are disposed between the base plate 201 and the top plate 204.

[0017] It should be noted that in this embodiment, the base 1 is a circular steel plate structure with a milled bottom to ensure placement stability. Three sets of bottom mounting holes 4 are evenly spaced along the circumference of the base 1 for fixing the fixture to the worktable of the machine tool using expansion bolts. Simultaneously, three sets of connecting columns 5 are evenly welded along the circumference of the top surface of the base 1. The connecting columns 5 are cylindrical steel columns, with their tops welded to the base plate 201. The gear linkage assembly 2 drives the clamping assembly 3 to move synchronously. Both the base plate 201 and the top plate 204 are equilateral triangular steel plates with rounded corners to prevent collisions. A transmission shaft runs through the center of the triangular base plate 201 and top plate 204. Both ends of the transmission shaft are rotatably connected to bearing seats at the center of the base plate 201 and top plate 204 respectively via angular contact ball bearings. The bearing seats are welded and fixed to the base plate and top plate to ensure the transmission pinion 2... 02 can rotate flexibly. There are three sets of driven large gears 203, which mesh with the transmission small gears 202 and are distributed on the inner sides of the three corners of the triangular base plate 201. The material and precision of each set of driven large gears 203 are compatible with the transmission small gears 202. The center of each set of driven large gears 203 is also through the transmission shaft. The two ends of the transmission shaft are rotatably connected to the bearing seats at the corresponding positions of the base plate 201 and the top plate 204 through deep groove ball bearings. The bearing seats are welded inside the base plate 201 and the top plate 204 to ensure that the meshing clearance between the three sets of driven large gears 203 and the transmission small gears 202 is consistent. One side of each set of driven large gears 203 extends outward to form an extension section. The drive motor 205 is a servo motor fixed at the center of the bottom surface of the base plate 201. Its output shaft is connected to the lower end of the transmission small gear 202 through a flexible coupling, which can drive the transmission small gear 202 to rotate in both directions. The servo motor 205 used in this device has a self-locking function, which is achieved through a built-in electromagnetic brake. When the motor receives a stop signal or is powered off, the armature of the electromagnetic brake is tightly fitted with the brake disc under the action of spring force, generating a frictional torque to lock the motor output shaft, preventing it from rotating under external force. After the output shaft of the servo motor 205 is locked, the transmission pinion 202 connected to it cannot rotate, and then locks the three sets of driven large gears 203 through meshing relationship, ultimately keeping the three sets of clamping heads 301 in the current clamping posture.

[0018] like Figure 4 As shown, the clamping assembly 3 includes a clamping head 301, a first fixed seat 302, a second fixed seat 303, and a bolt 306. The clamping head 301 passes through the extension of the driven large gear 203. The first fixed seat 302 and the second fixed seat 303 are both fixed at the bottom of the extension of the driven large gear 203, and the bottom of the clamping head 301 is located between the first fixed seat 302 and the second fixed seat 303, and is connected by the bolt 306. The clamping assembly 3 also includes a protrusion 304 and a circular groove 305. The protrusion 304 is uniformly glued around the periphery of the clamping head 301. The bottom of the clamping head 301 is provided with a circular groove 305 that is adapted to the bolt 306, so that the bolt 306 can pass through the second fixed seat 303 and the circular groove 305 to connect with the first fixed seat 302.

[0019] It should be noted that in this embodiment, the three sets of clamping components 3 are respectively connected to the extension sections of the three sets of driven large gears 203, arranged in a triangular distribution, corresponding to the three clamping positions of the end cover. The upper part of the clamping head 301 is the clamping section, with rubber protrusions 304 glued to its outer periphery for anti-slip, and the lower part is the connecting section. The first fixed seat 302 and the second fixed seat 303 are both rectangular steel plates, symmetrically welded to the root of the extension section of the driven large gear 203. The connecting end of the clamping head 301 and the corresponding position of the second fixed seat 303 are provided with circular grooves 305. The bottom of the clamping head 301 connecting section is located between the two fixed seats. The clamping head connecting section is connected by bolts 306, which pass through the second fixed seat 303 and the circular groove 305 of the clamping head connecting section, and finally lock with the threaded hole of the first fixed seat 302 to prevent the clamping head 301 from moving. The bolts 306 are provided with two sets for fixing the clamping head 301 on the extension section of the driven large gear 203 to ensure the stability of the installation. At the same time, it is convenient to disassemble and assemble the clamping head 301. When the protrusion 304 is worn, the clamping head 301 can be replaced by removing the bolts 306.

[0020] Working principle of this utility model: Refer to the instruction manual appendix Figure 1-4According to the inner hole size of the motor end cover to be processed, select a suitable clamping head 301. By removing two sets of bolts 306, place the connecting section of the clamping head 301 between the first fixed seat 302 and the second fixed seat 303, so that the circular groove 305 of the clamping head connecting section is aligned with the through hole of the second fixed seat 303. Then, pass the bolts 306 through the circular groove 305 and screw them into the threaded hole of the first fixed seat 302 to lock them. At this time, the rubber protrusion 304 on the outer periphery of the upper clamping section of the clamping head 301 remains intact and can be tightly fitted with the inner hole wall of the end cover through elastic deformation. At the same time, the two sets of bolts 306 ensure that the clamping head 301 is rigidly connected to the extension section of the driven large gear 203 to avoid axial or radial movement. The inner hole of the motor end cover is fitted onto the upper clamping section of the clamping head 301 of the three sets of clamping components 3. Since the three sets of clamping components 3 are symmetrically distributed at 120° along the inner side of the three corners of the triangular base plate 201 and correspond one-to-one with the driven large gear 203, the end cover will naturally align with the center of the tooling after it is fitted in, and the bottom surface of the end cover will fit against the top surface of the top plate 204, thus achieving initial positioning. Then the drive motor 205 is started, and its output shaft drives the drive shaft of the transmission pinion 202 to rotate through the flexible coupling. The transmission pinion 202 rotates flexibly in the central bearing seat of the base plate 201 and the top plate 204 through the angular contact ball bearings at both ends of the central drive shaft. Since it meshes with the three sets of driven large gears 203, and the three sets of driven large gears 203 rotate in the corresponding bearing seats of the base plate 201 and the top plate 204 through the deep groove ball bearings at both ends of their respective drive shafts, and their meshing clearance is consistent, the rotation of the transmission pinion 202 will drive the three sets of driven large gears 203 to rotate synchronously in opposite directions. The extended section of the driven large gear 203 rotates synchronously with the gear, thereby driving the clamping head 301 fixed on the extended section to rotate synchronously. At this time, the rubber protrusion 304 on the upper part of the clamping head 301 generates friction with the inner wall of the end cover. The synchronous rotation of the three sets of clamping heads 301 forms a uniform circumferential clamping force on the end cover, so that the end cover is stably clamped. When the rubber protrusions 304 of the clamping head 301 wear down due to long-term use, resulting in a decrease in the anti-slip effect, the clamping performance can be restored by removing the two sets of bolts 306, taking off the old clamping head 301 and replacing it with a new clamping head 301, and then re-fixing it with bolts 306. The operation is convenient.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for machining an electric motor end cover, characterized in that: It includes a base (1), a gear linkage assembly (2) mounted on the base (1); and a plurality of clamping assemblies (3) disposed on the gear linkage assembly (2). The gear linkage assembly (2) includes a base plate (201), a transmission pinion (202), a driven gear (203) meshing with the transmission pinion (202), a top plate (204), and a drive motor (205) for driving the transmission pinion (202) to rotate. The transmission pinion (202) and the driven gear (203) are disposed between the base plate (201) and the top plate (204). The clamping assembly (3) includes a clamping head (301), a first fixed seat (302), a second fixed seat (303), and a bolt (306). The clamping head (301) passes through the extension of the driven large gear (203). The first fixed seat (302) and the second fixed seat (303) are both fixed at the bottom of the extension of the driven large gear (203), and the bottom of the clamping head (301) is located between the first fixed seat (302) and the second fixed seat (303), and is connected by a bolt (306).

2. The tooling for machining an electric motor end cover according to claim 1, characterized in that: The clamping assembly (3) also includes a protrusion (304) and a circular groove (305). The protrusion (304) is uniformly glued around the clamping head (301). The bottom of the clamping head (301) is provided with a circular groove (305) that is compatible with the bolt (306), so that the bolt (306) can pass through the second fixing seat (303) and the circular groove (305) to connect with the first fixing seat (302).

3. The tooling for machining an electric motor end cover according to claim 1, characterized in that: The transmission pinion (202) is rotatably mounted at the center of the base plate (201). The driven large gear (203) is provided in three sets, and each set of the driven large gear (203) is provided with a corresponding clamping component (3).

4. The tooling for machining an electric motor end cover according to claim 1, characterized in that: The transmission pinion (202) is connected to the output shaft of the drive motor (205).

5. The tooling for machining an electric motor end cover according to claim 1, characterized in that: The base (1) has three sets of bottom mounting holes (4) arranged in a ring on the base (1).

6. The tooling for machining an electric motor end cover according to claim 1, characterized in that: The base (1) has three sets of connecting columns (5) arranged in a ring on the base (1) to connect the base (1) and the base plate (201).

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