Reaming clamp of coreless motor commutator

Abstract

The reaming clamp comprises a first cylinder, a square metal block is connected to the right side of the first cylinder in an inserted mode, a motor axis is connected to the right side of the square metal block in an inserted mode, and a fixing device is installed on the right side of the first cylinder. The fixing device comprises an elastic sliding mechanism and rotary fixing mechanisms, the elastic sliding mechanism is installed on the left side of the first cylinder, the multiple rotary fixing mechanisms are installed on the elastic sliding mechanism, the elastic sliding mechanism comprises a fixing column, a sliding cylinder and a spring, the right side of the fixing column is fixedly installed on the left side of the first cylinder, and the sliding cylinder is fixedly installed on the left side of the first cylinder. The sliding cylinder is connected to the middle side of the fixing column in a sliding mode, and the spring is arranged on the fixing column. By means of the mode, a machined workpiece can be rapidly clamped only through one step, the concentricity of an inner hole of the motor axis and the outer contour of the motor axis can be improved, and meanwhile motor axes of different thicknesses can be clamped.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a hinge hole fixture for a hollow cup motor commutator. Background Technology

[0002] A spindle is a slender, rotating shaft-like part mainly used to support or position other parts, and can also transmit torque. It plays a key role in machining and assembly processes. Turning the inner hole of a coreless motor spindle is an important process in motor manufacturing. The coreless motor spindle is usually a cylindrical metal shaft. Turning the inner hole involves using a milling machine to machine a round hole of a suitable size on the inner surface of the cylinder of the motor spindle. The purpose of turning the inner hole is to meet the specific design requirements of the motor, such as reducing weight, installing other components, or realizing special fluid channels. The concentricity of the inner and outer rings of the machined spindle must be high.

[0003] Chinese patent CN216226988U discloses a mandrel comprising a base plate with a clamping device connected to it. The mandrel assembly includes a tapered shaft A and a tapered shaft B. A square column is positioned at the large diameter end of tapered shaft A, and a screw is positioned at the small diameter end of tapered shaft A. An internal thread is positioned at the small diameter end of tapered shaft B, and a cylinder is positioned at the large diameter end of tapered shaft B. An expansion core is sleeved and connected to the large diameter ends of tapered shafts A and B. The screw at the small diameter end of tapered shaft A and the internal thread at the small diameter end of tapered shaft B are threadedly connected. The square column, tapered shaft A, and screw are integrally formed, as are the cylinder, internal thread, and tapered shaft B. The expansion core is made of spring steel. A positive threaded rod drives a second fixed sleeve to move, and a negative threaded rod drives a first fixed sleeve to move in opposite directions, thereby clamping and fixing the cylinder.

[0004] However, the technical solution of this patent has the following problems:

[0005] 1. This patent uses a positive thread rod to drive the second fixed sleeve to move, and a negative thread rod to drive the first fixed sleeve to move in opposite directions to clamp and fix the cylinder. However, the clamping process involves too many steps, and when the clamping is being processed, it cannot improve the concentricity of the inner hole and the outer ring.

[0006] Therefore, those skilled in the art have provided a hinge hole fixture for a coreless motor commutator to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a hinge hole fixture for a hollow cup motor commutator to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A hinge hole clamp for a hollow cup motor commutator includes a first cylinder. A square metal block is inserted into the right side of the first cylinder, and a motor shaft is inserted into the right side of the square metal block. A fixing device is installed on the right side of the first cylinder. The fixing device includes an elastic sliding mechanism and a rotating fixing mechanism. The elastic sliding mechanism is installed on the left side of the first cylinder, and multiple rotating fixing mechanisms are installed on the elastic sliding mechanism. The elastic sliding mechanism includes a fixed column, a sliding cylinder, and a spring. The right side of the fixed column is fixedly installed on the left side of the first cylinder. The sliding cylinder is slidably connected to the middle side of the fixed column. The spring is disposed on the fixed column, with one end of the spring tightly abutting a first groove and the other end of the spring tightly abutting the right side of the sliding cylinder.

[0010] The sliding cylinder has a thread on its left side;

[0011] The first cylinder has a first groove on the inner ring of its left side wall for accommodating the spring, a second groove on the outer ring of its left side wall, and four first slots evenly distributed on the outer ring side wall of the first cylinder.

[0012] Furthermore, the rotating fixing mechanism includes: a base, a transmission rod, and a pressure rod. Multiple bases are fixedly installed on the outer wall of the sliding cylinder, with the same spacing between adjacent bases. The left side of the transmission rod is rotatably connected to the end of the base away from the outer wall of the sliding cylinder via a rotating shaft. The middle side of the transmission rod is disposed within a first slot. The middle side of multiple pressure rods is rotatably connected to the right side of the first cylinder via a rotating shaft. The right side of the transmission rod is rotatably connected to the end of the pressure rod away from the center of the first cylinder via a rotating shaft. A first protrusion is provided at the end of the pressure rod away from the transmission rod, and the first protrusion abuts against the right side wall of the motor shaft.

[0013] Furthermore, a second cylinder is provided on the left side of the first cylinder, and a plurality of second protrusions are provided on the right side wall of the second cylinder, the second protrusions being disposed in the second groove;

[0014] Furthermore, a second slot is provided on the middle side of the second cylinder. The second slot is cross-shaped and penetrates through the second cylinder. The left side of the transmission rod is located in the second slot.

[0015] Furthermore, a triggering device is installed on the middle side of the second cylinder;

[0016] Furthermore, the triggering device includes a sliding rod, a third groove is provided on the right side of the sliding rod, a threaded hole is provided in the third groove, the middle side of the sliding rod is slidably connected to the middle side of the second slot, and the right side of the sliding rod is threadedly connected to the left side of the sliding cylinder;

[0017] Furthermore, the left side wall of the second cylinder is provided with a plurality of fourth grooves, which are evenly arranged along the central axis of the second cylinder;

[0018] Furthermore, each of the fourth grooves is threaded with a fixing screw, and the right side of the fixing screw is threaded to the left side of the first cylinder.

[0019] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model inserts a square metal block into the right side of the first cylinder, clamps the product on the lathe through the second cylinder, and presses the product forcefully towards the lathe jaws, causing the triggered sliding rod to move to the right. The sliding rod moves to the right, causing the sliding cylinder to move to the right, which compresses the spring. The sliding cylinder moves to the right, causing the base to move to the right. The base moves to the right, causing the transmission rod to move to the right. The transmission rod moves to the right, causing the end of the pressure rod away from the center of the first cylinder to move to the right. Through the lever principle, the end of the pressure rod away from the center of the first cylinder moves to the right, causing the end of the pressure rod close to the center of the first cylinder to move to the left, firmly pressing the square metal block into the first cylinder. The workpiece to be processed is placed on the square metal block and fixed together, which is conducive to quickly fixing the workpiece to be processed in one step.

[0020] 2. By machining a hole with the same diameter as the motor shaft on the right side of the square metal block using a lathe, the second cylinder is slowly moved out of the lathe's jaws by a certain distance. The compressed spring returns to its original position, and the motor shaft can then be placed into the machined hole on the right side of the square metal block. Next, the product is clamped on the lathe by the second cylinder, and the product is pressed firmly against the lathe jaws, so that the pressure rod firmly presses the motor shaft into the first cylinder. At this point, the inner hole of the motor shaft is machined, which can improve the concentricity between the inner hole and the outer contour of the motor shaft. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a front view of the present utility model;

[0023] Figure 3 This is the left view of the present invention;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0025] Figure 5 This is a three-dimensional structural diagram of the present invention without the second cylinder;

[0026] Figure 6 This is a three-dimensional structural diagram of the exploded view of this utility model. Figure 1 ;

[0027] Figure 7 This is a three-dimensional structural diagram of the exploded view of this utility model. Figure 2 .

[0028] In the diagram: 1. First cylinder; 2. Square metal block; 3. Motor shaft; 4. Fixing device; 41. Fixing column; 42. Sliding cylinder; 43. Spring; 44. Base; 45. Transmission rod; 46. Pressure rod; 47. First protrusion; 5. First groove; 6. Second groove; 7. First slot; 8. Second cylinder; 9. Second protrusion; 10. Second slot; 11. Sliding rod; 12. Third groove; 14. Fourth groove; 15. Fixing screw. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0031] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-7 A hinge hole clamp for a hollow cup motor commutator includes a first cylinder 1. A square metal block 2 is inserted into the right side of the first cylinder 1. A motor shaft 3 is inserted into the right side of the square metal block 2. A fixing device 4 is installed on the right side of the first cylinder 1. The fixing device 4 includes an elastic sliding mechanism and a rotating fixing mechanism. The elastic sliding mechanism is installed on the left side of the first cylinder 1. Multiple rotating fixing mechanisms are installed on the elastic sliding mechanism. The elastic sliding mechanism includes a fixed column 41, a sliding cylinder 42, and a spring 43. The right side of the fixed column 41 is fixedly installed on the left side of the first cylinder 1. The sliding cylinder 42 is slidably connected to the middle side of the fixed column 41. The spring 43 is disposed on the fixed column 41. One end of the spring 43 is tightly attached to a first groove 5, and the other end of the spring 43 is tightly attached to the right side of the sliding cylinder 42.

[0032] The sliding cylinder 42 has a thread on its left side.

[0033] The first cylinder 1 has a first groove 5 on the inner ring of its left side wall for accommodating the spring 43, a second groove 6 on the outer ring of its left side wall, and four first slots 7 evenly arranged on the outer ring side wall of the first cylinder 1.

[0034] The rotating fixing mechanism includes: a base 44, a transmission rod 45, and a pressure rod 46. Multiple bases 44 are fixedly installed on the outer sidewall of the sliding cylinder 42, with the same spacing between adjacent bases 44. The left side of the transmission rod 45 is rotatably connected to the end of the base 44 away from the outer sidewall of the sliding cylinder 42 via a rotating shaft. The middle side of the transmission rod 45 is disposed within the first slot 7. The middle side of multiple pressure rods 46 is rotatably connected to the right side of the first cylinder 1 via a rotating shaft. The right side of the transmission rod 45 is rotatably connected to the end of the pressure rod 46 away from the center of the first cylinder 1 via a rotating shaft. A first protrusion 47 is provided at the end of the pressure rod 46 away from the transmission rod 45, and the first protrusion 47 abuts against the right sidewall of the motor shaft 3.

[0035] The sliding rod 11 moves to the right, causing the sliding cylinder 42 to move to the right, which compresses the spring 43. The sliding cylinder 42 moves to the right, causing the base 44 to move to the right. The base 44 moves to the right, causing the transmission rod 45 to move to the right. The transmission rod 45 moves to the right, causing the end of the pressure rod 46 away from the center of the first cylinder 1 to move to the right. Through the lever principle, the end of the pressure rod 46 away from the center of the first cylinder 1 moves to the right, causing the end of the pressure rod 46 close to the center of the first cylinder 1 to move to the left, firmly pressing the square metal block 2 into the first cylinder 1, which is conducive to quickly fixing the square metal block 2.

[0036] Example 2: In some embodiments, such as Figures 1-7 In a preferred embodiment of the present invention, a second cylinder 8 is provided on the left side of the first cylinder 1, and a plurality of second protrusions 9 are provided on the right side wall of the second cylinder 8, and the second protrusions 9 are disposed in the second groove 6.

[0037] The second cylinder 8 has a second slot 10 on its middle side. The second slot 10 is cross-shaped and penetrates through the second cylinder 8. The transmission rod 45 is located in the second slot 10 on its left side.

[0038] A triggering device is installed on the middle side of the second cylinder 8.

[0039] The triggering device includes a sliding rod 11, a third groove 12 is provided on the right side of the sliding rod 11, a threaded hole is provided in the third groove 12, the middle side of the sliding rod 11 is slidably connected to the middle side of the second slot 10, and the right side of the sliding rod 11 is threadedly connected to the left side of the sliding cylinder 42.

[0040] The left side wall of the second cylinder 8 is provided with a plurality of fourth grooves 14, which are evenly arranged along the central axis of the second cylinder 8.

[0041] Each of the fourth grooves 14 is threaded with a fixing screw 15, and the right side of the fixing screw 15 is threaded to the left side of the first cylinder 1.

[0042] When machining the inner hole of the motor shaft 3, insert the square metal block 2 into the right side of the first cylinder 1. Clamp the product onto the lathe using the second cylinder 8 and press it firmly against the lathe jaws. This causes the triggered sliding rod 11 to move to the right. The rightward movement of the sliding rod 11 moves the sliding cylinder 42 to the right, compressing the spring 43. The rightward movement of the sliding cylinder 42 moves the base 44 to the right, which in turn moves the transmission rod 45 to the right. The rightward movement of the transmission rod 45 moves the end of the pressure rod 46 away from the center of the first cylinder 1 to the right. Through the lever principle, the rightward movement of the end of the pressure rod 46 away from the center of the first cylinder 1 causes the end of the pressure rod 46 near the center of the first cylinder 1 to move to the left. The square metal block 2 is firmly pressed into the first cylinder 1. A hole with the same diameter as the motor shaft 3 is machined on the right side of the square metal block 2 using a lathe. Then, the second cylinder 8 is slowly moved out of the lathe's jaws by a certain distance. The compressed spring 43 returns to its original position and pushes the sliding cylinder 42 back to its initial position. At this time, the motor shaft 3 can be placed into the hole just machined on the right side of the square metal block 2. Then, the product is clamped on the lathe by the second cylinder 8 and pressed tightly towards the lathe jaws, so that the pressure rod 46 firmly presses the motor shaft 3 into the first cylinder 1. At this time, the inner hole of the motor shaft 3 is machined to improve the concentricity between the inner hole of the motor shaft 3 and the outer contour of the motor shaft 3. At the same time, motor shafts 3 of different thicknesses can be clamped.

[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hinge hole fixture for a hollow cup motor commutator, comprising a first cylinder (1), characterized in that, A square metal block (2) is inserted into the right side of the first cylinder (1), and a motor shaft (3) is inserted into the right side of the square metal block (2). A fixing device (4) is installed on the right side of the first cylinder (1). The fixing device (4) includes an elastic sliding mechanism and a rotating fixing mechanism. The elastic sliding mechanism is installed on the left side of the first cylinder (1), and multiple rotating fixing mechanisms are installed on the elastic sliding mechanism. The elastic sliding mechanism includes a fixed column (41), a sliding cylinder (42), and a spring (43). The right side of the fixed column (41) is fixedly installed on the left side of the first cylinder (1). The sliding cylinder (42) is slidably connected to the middle side of the fixed column (41). The spring (43) is set on the fixed column (41). One end of the spring (43) is tightly attached to the first groove (5), and the other end of the spring (43) is tightly attached to the right side of the sliding cylinder (42).

2. The hinge hole fixture for a hollow cup motor commutator according to claim 1, characterized in that, The sliding cylinder (42) has a thread on its left side.

3. The hinge hole fixture for a hollow cup motor commutator according to claim 2, characterized in that, The first cylinder (1) has a first groove (5) on the inner ring of the left side wall, a second groove (6) on the outer ring of the left side wall, and four first slots (7) are evenly arranged on the outer ring side wall of the first cylinder (1).

4. The hinge hole fixture for a hollow cup motor commutator according to claim 3, characterized in that, The rotating fixing mechanism includes: a base (44), a transmission rod (45), and a pressure rod (46). Multiple bases (44) are fixedly installed on the outer ring side wall of the sliding cylinder (42). The spacing between each adjacent base (44) is the same. The left side of the transmission rod (45) is rotatably connected to the end of the base (44) away from the outer ring side wall of the sliding cylinder (42) via a rotating shaft. The middle side of the transmission rod (45) is set in the first slot (7). The middle side of multiple pressure rods (46) is rotatably connected to the right side of the first cylinder (1) via a rotating shaft. The right side of the transmission rod (45) is rotatably connected to the end of the pressure rod (46) away from the center of the first cylinder (1) via a rotating shaft. The end of the pressure rod (46) away from the transmission rod (45) is provided with a first protrusion (47). The first protrusion (47) abuts against the right side wall of the motor shaft (3).

5. The hinge hole fixture for a hollow cup motor commutator according to claim 4, characterized in that, A second cylinder (8) is provided on the left side of the first cylinder (1), and a plurality of second protrusions (9) are provided on the right side wall of the second cylinder (8), and the second protrusions (9) are provided in the second groove (6).

6. The hinge hole fixture for a hollow cup motor commutator according to claim 5, characterized in that, The second cylinder (8) has a second slot (10) on its middle side. The second slot (10) is cross-shaped and penetrates the second cylinder (8). The transmission rod (45) is located in the second slot (10) on its left side.

7. The hinge hole fixture for a hollow cup motor commutator according to claim 6, characterized in that, A triggering device is installed on the middle side of the second cylinder (8).

8. The hinge hole fixture for a hollow cup motor commutator according to claim 7, characterized in that, The triggering device includes a sliding rod (11), a third groove (12) is provided on the right side of the sliding rod (11), a threaded hole is provided in the third groove (12), the middle side of the sliding rod (11) is slidably connected to the middle side of the second slot (10), and the right side of the sliding rod (11) is threadedly connected to the left side of the sliding cylinder (42).

9. The hinge hole fixture for a hollow cup motor commutator according to claim 8, characterized in that, The second cylinder (8) has a plurality of fourth grooves (14) on its left side wall, and the fourth grooves (14) are evenly arranged along the central axis of the second cylinder (8).

10. The hinge hole fixture for a hollow cup motor commutator according to claim 9, characterized in that, Each of the fourth grooves (14) is threaded with a fixing screw (15), and the right side of the fixing screw (15) is threaded to the left side of the first cylinder (1).

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