Clamp for machining key groove in end face of motor shaft

Abstract

The utility model discloses a motor shaft end face key groove machining clamp which comprises a first clamp body and a second clamp body fixedly arranged on a working table, and the working table is provided with a second clamp body which horizontally moves in the radial direction of the first clamp body in a back-to-back or opposite mode. The first clamp and the second clamp are provided with limiting grooves allowing the motor shaft to penetrate through, and clamping blocks used for clamping the motor shaft are arranged on the walls of the limiting grooves in a circumferential winding mode. Adjusting mechanisms are arranged in the first clamp and the second clamp and used for driving the clamping blocks to clamp motor shafts of different sizes. Positioning mechanisms are arranged on the first clamp and the second clamp and used for positioning the motor shaft after the motor shaft is clamped by the adjusting clamping blocks. The adjusting mechanism is arranged and used for driving the clamping block to clamp and fix the motor shafts of different sizes, the motor shafts are fixed through the positioning mechanism after being mechanically clamped, and the situation that the clamping block is loosened and the machining accuracy is not improved is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures for machining shaft workpieces, in particular to a fixture for machining keyways on the end faces of motor shafts. Background Art

[0002] The motor shaft end face keyway machining fixture is an important tool for ensuring the accuracy and efficiency of motor shaft keyway machining. The motor shaft end face keyway machining fixture is mainly used to fix the motor shaft to keep it stable during machining and prevent it from moving or rotating, thereby ensuring machining accuracy.

[0003] In the prior art, for example, a fixture for machining keyways on the end faces of motor shafts is described in a Chinese utility model patent (publication number CN219599223U), which uses two relative fixing components so that the two ends of the motor shaft continuously push the extrusion plate under the drive of the first driving component, thereby driving the fixing claws to fix the motor shaft.

[0004] However, motor shafts are divided into different types and sizes. Motor shafts of different types and sizes require different types of clamps to fix them, but the device cannot clamp motor shafts of different sizes. When different types of motor shafts need to be clamped, the motor shaft needs to be clamped by replacing the fixing claws, which is not conducive to improving work efficiency. Utility Model Content

[0005] In view of the above problems, a clamp for machining keyways on the end faces of motor shafts is provided, which solves the problem of being unable to clamp motor shafts of different sizes through an adjustment mechanism.

[0006] In order to solve the problems of the prior art, the utility model provides a clamp for machining the keyway on the end face of a motor shaft, comprising a first clamp and the first clamp fixedly arranged on a workbench, a second clamp being arranged on the workbench for horizontally moving away from or towards the first clamp in a radial direction, the first clamp and the second clamp being provided with a limiting groove through which the motor shaft passes, a clamping block for clamping the motor shaft being circumferentially arranged on the wall of the limiting groove; an adjusting mechanism being arranged inside the first clamp and the second clamp for driving the clamping block to clamp motor shafts of different sizes; a positioning mechanism being arranged on the first clamp and the second clamp for positioning the motor shaft after the clamping block is adjusted to clamp the motor shaft.

[0007] Preferably, the adjustment mechanism includes a rotating disk, a positioning rod and an arc-shaped groove. The first clamp and the second clamp are provided with rotating disks that rotate toward one side and cooperate with the limit groove. The clamping block is provided with a positioning rod at one end close to the limit groove wall. The rotating disk is provided with an arc-shaped groove that cooperates with the positioning rod. The first clamp and the second clamp are provided with a rotating mechanism for driving the rotating disk to rotate.

[0008] Preferably, the rotating mechanism includes a driven gear ring, a driving gear and a rotating rod, the driven gear ring is sleeved on the periphery of the rotating disk, the first clamp and the second clamp are provided with a driving gear meshing with the driven gear ring, and the first clamp and the second clamp are provided with a rotating rod on the side away from the rotating disk for driving the driving gear to rotate.

[0009] Preferably, the positioning mechanism includes a worm, a worm wheel and a rotating column. A mounting seat is provided on the side wall of the first clamp and the second clamp away from the rotating disk. The mounting seat is provided with a receiving groove. The rotating column passes through the receiving groove to connect with the worm, the worm is meshed with the worm wheel, and the worm wheel is connected to the rotating rod near the side wall of the first clamp or the second clamp.

[0010] Preferably, a rubber pad is provided on the surface of the mounting seat in contact with the rotating column.

[0011] Preferably, a protective cover is installed on the first clamp and the second clamp near the rotating disk.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model is provided with an adjustment mechanism for driving the clamping block to clamp and fix motor shafts of different sizes, so as to improve the efficiency of clamping and fixing. When different types of motor shafts need to be clamped, there is no need to clamp and fix the motor shaft by disassembling and assembling the fixing claws.

[0014] 2. The utility model is provided with a positioning mechanism, which is used to fix the motor shaft after it is mechanically clamped, so as to prevent the clamping block from loosening, thereby failing to fix the motor shaft, which is not conducive to improving the processing accuracy.

[0015] 3. The utility model is provided with a protective cover to protect the adjusting mechanism to prevent it from being exposed to the outside, which would affect its service life and cause unnecessary damage to it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a fixture for machining the keyway on the end face of a motor shaft Figure 1 .

[0017] Figure 2 A schematic diagram of the three-dimensional structure of a fixture for machining the keyway on the end face of a motor shaft Figure 2 .

[0018] Figure 3 A schematic diagram of the partial three-dimensional structure of a fixture for machining the keyway on the end face of a motor shaft Figure 1 .

[0019] Figure 4 A schematic diagram of the partial three-dimensional structure of a fixture for machining the keyway on the end face of a motor shaft Figure 2 .

[0020] Figure 5 The invention is a schematic diagram of the exploded three-dimensional structure of the installation of a fixture for machining the keyway on the end face of a motor shaft.

[0021] Figure 6 This is a fixture for machining keyway on the end face of a motor shaft. Figure 1 Schematic diagram of the locally enlarged structure of A in the middle.

[0022] The numbers in the figure are: 101, workbench; 102, protective cover; 103, first clamp; 104, second clamp; 105, rotating block; 106, clamping block; 107, screw; 201, rotating disk; 202, positioning rod; 203, arc groove; 301, driven gear ring; 302, driving gear; 401, worm; 402, worm wheel; 403, rotating column. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-Figure 6 A clamp for machining keyways on the end face of a motor shaft, comprising a first clamp 103 and the first clamp 103 fixedly arranged on a workbench 101, a second clamp 104 being arranged on the workbench 101 for horizontally moving away from or towards the first clamp 103 in the radial direction, a limiting groove for the motor shaft to pass through being arranged on the first clamp 103 and a clamping block 106 for clamping the motor shaft being arranged in a circle on the wall of the limiting groove; an adjusting mechanism being arranged inside the first clamp 103 and the second clamp 104 for driving the clamping block 106 for clamping motor shafts of different sizes; a positioning mechanism being arranged on the first clamp 103 and the second clamp 104 for positioning the motor shaft after the clamping block 106 is adjusted to clamp the motor shaft.

[0025] The workbench 101 is provided with an adjustment distance component for driving the second clamp 104 to move horizontally toward or away from the first clamp 103, and the adjustment distance component includes a rotating block 105 and a screw rod 107. A sliding groove is provided on the workbench 101, and a screw rod 107 is rotatably provided in the sliding groove. One end of the screw rod 107 is rotatably connected to the sliding groove wall, and the other end of the screw rod 107 passes through the sliding groove wall to connect to the rotating block 105. A sliding block is provided at the lower end of the second clamp 104, and the sliding block is sleeved on the outer periphery of the screw rod 107. The sliding block is provided with a thread matching the screw rod 107.

[0026] Rotating the rotating block 105 drives the screw rod 107 to rotate, and the rotation of the screw rod 107 cooperates with the sliding block to drive the sliding block to reciprocate in the sliding groove, and the sliding block drives the second clamp 104 to reciprocate toward the first clamp 103. The staff adjusts the distance between the first clamp 103 and the second clamp 104 according to the length of the motor shaft to be processed, and places the motor shaft in the limit grooves of the first clamp 103 and the second clamp 104. The clamping block 106 is driven by the adjustment mechanism to clamp and fix the motor shaft. In this way, motors of different types and sizes can be fixed and clamped. When adjusted to a suitable position, it is fixed by the positioning mechanism to avoid displacement of the motor shaft in the limit groove, which is not conducive to improving the processing accuracy. At the same time, it also improves the efficiency of clamping and fixing motor shafts of different sizes. There is no need to fix the motor shaft by replacing different fixing claws, which is cumbersome to operate.

[0027] Reference Figure 3-Figure 5 : The adjusting mechanism includes a rotating disk 201, a positioning rod 202 and an arc groove 203. The first clamp 103 and the second clamp 104 are provided with a rotating disk 201 that rotates toward one side and cooperates with the limiting groove. A positioning rod 202 is provided on one end of the clamping block 106 close to the limiting groove wall. The rotating disk 201 is provided with an arc groove 203 that cooperates with the positioning rod 202. The first clamp 103 and the second clamp 104 are provided with a rotating mechanism for driving the rotating disk 201 to rotate.

[0028] The rotating disk 201 is rotated, and the positioning rod 202 cooperates with the rotating disk 201 to drive the clamping block 106 to move. According to the size of the motor shaft, the rotating disk 201 is rotated to drive the clamping block 106 to clamp the outer periphery of the motor shaft, and then fixed by the positioning mechanism, the motor shaft can be fixed.

[0029] Reference Figure 3-Figure 4 : The rotating mechanism includes a driven gear ring 301, a driving gear 302 and a rotating rod 303. The driven gear ring 301 is sleeved on the outer periphery of the rotating disk 201. The first clamp 103 and the second clamp 104 are provided with a driving gear 302 that meshes with the driven gear ring 301. The first clamp 103 and the second clamp 104 are provided with a rotating rod 303 on the side away from the rotating disk 201 for driving the driving gear 302 to rotate.

[0030] Rotating the rotating rod 303 drives the driving gear 302 to rotate, the driving gear 302 drives the rotating rod 303 to rotate, and the rotating rod 303 drives the rotating disk 201 to rotate, so that the distance between the clamping block 106 and the outer periphery of the motor shaft can be adjusted to achieve fixed clamping of the motor shaft.

[0031] Reference Figure 6: The positioning mechanism includes a worm 401, a worm wheel 402 and a rotating column 403. A mounting seat is provided on the side wall of the first clamp 103 and the second clamp 104 away from the rotating disk 201, and a receiving groove is provided on the mounting seat. The rotating column 403 is connected to the worm 401 through the receiving groove. The worm 401 is meshed with the worm wheel 402, and the worm wheel 402 is connected to the rotating rod near the side wall of the first clamp 103 or the second clamp 104.

[0032] The worm 401 is driven to rotate by rotating the rotating column 403, the worm 401 drives the worm wheel 402 to rotate, the worm wheel 402 drives the rotating rod to rotate, and the rotating rod drives the driving gear 302 to rotate, thereby driving the clamping block 106 to slide and clamp the periphery of the motor shaft. In this way, the clamping block 106 can clamp the periphery of the motor shaft. Since the worm 401 and the worm wheel 402 can be self-locking, the clamping block 106 that clamps the motor shaft can be positioned, and the mounting seat is used to support the rotation of the rotating column 403.

[0033] Reference Figure 2-Figure 6 : A rubber pad is provided on the surface where the mounting seat contacts the rotating column.

[0034] The rotating column 403 is rotated to drive the clamping block 106 to fix and clamp motor shafts of different sizes. The surface where the receiving groove wall of the mounting seat contacts the rotating column 403 is provided with a rubber bottom to increase the friction between the receiving groove wall of the mounting seat and the rotating column 403, so that the rotating column 403 drives the clamping block 106 to clamp motor shafts of different sizes with greater stability.

[0035] Reference Figure 3-Figure 5 : A protective cover 102 is installed on the first clamp 103 and the second clamp 104 close to the rotating disk 201.

[0036] It is used to wrap the adjustment mechanism into the protective cover 102 to prevent the adjustment mechanism from being exposed to the outside, thereby causing unnecessary damage to the adjustment mechanism, reducing the service life of the equipment and increasing the maintenance cost.

[0037] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A fixture for machining a keyway on an end face of a motor shaft, comprising a first fixture (103) and the first fixture (103) fixedly arranged on a workbench (101), a second fixture (104) being arranged on the workbench (101) and moving horizontally in opposite directions or in opposite directions in a radial direction of the first fixture (103), characterized in that: The first clamp (103) and the second clamp (104) are provided with a limiting groove through which the motor shaft passes, and a clamping block (106) for clamping the motor shaft is circumferentially provided on the wall of the limiting groove; The first clamp (103) and the second clamp (104) are provided with adjustment mechanisms for driving the clamping block (106) to clamp motor shafts of different sizes; The first clamp (103) and the second clamp (104) are provided with positioning mechanisms for positioning the motor shaft after the motor shaft is clamped by the adjusting clamping block (106).

2. A fixture for machining keyway on end face of motor shaft according to claim 1, characterized in that: The adjustment mechanism comprises a rotating disk (201), a positioning rod (202) and an arc-shaped groove (203); the first clamp (103) and the second clamp (104) are provided with a rotating disk (201) which is matched with the limiting groove and is rotated toward one side; the clamping block (106) is provided with a positioning rod (202) at one end close to the limiting groove wall; the rotating disk (201) is provided with an arc-shaped groove (203) which is matched with the positioning rod (202); and the first clamp (103) and the second clamp (104) are provided with a rotating mechanism for driving the rotating disk (201) to rotate.

3. A fixture for machining keyway on end face of motor shaft according to claim 2, characterized in that: The rotating mechanism comprises a driven gear ring (301) and a driving gear (302); the driven gear ring (301) is sleeved on the periphery of the rotating disk (201); the first clamp (103) and the second clamp (104) are provided with a driving gear (302) meshing with the driven gear ring (301); and a rotating rod for driving the driving gear (302) to rotate is provided on the side of the first clamp (103) and the second clamp (104) away from the rotating disk (201).

4. A fixture for machining keyway on end face of motor shaft according to claim 1, characterized in that: The positioning mechanism comprises a worm (401), a worm wheel (402) and a rotating column (403); a mounting seat is provided on the side wall of the first clamp (103) and the second clamp (104) away from the rotating disk (201); a receiving groove is provided on the mounting seat; the rotating column (403) passes through the receiving groove to connect with the worm (401); the worm (401) is meshed with the worm wheel (402); and the worm wheel (402) is connected to the rotating rod on the side wall close to the first clamp (103) or the second clamp (104).

5. A fixture for machining keyway on end face of motor shaft according to claim 4, characterized in that: A rubber pad is provided on the surface of the mounting seat that contacts the rotating column (403).

6. A fixture for machining keyway on end face of motor shaft according to claim 1, characterized in that: A protective cover (102) is installed on one side of the first clamp (103) and the second clamp (104) close to the rotating disk (201).

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