Positioning device for machining splines at two ends of motor shaft

Abstract

The utility model discloses a positioning device for machining splines at the two ends of a motor shaft, and relates to the technical field of machining, in particular to the positioning device for machining splines at the two ends of the motor shaft. A positioning vertical plate is fixedly installed on the other side of the upper portion of the positioning bottom plate, an inner arc profiling groove is formed in the side, close to the positioning vertical plate, of the profiling groove positioning tool, a to-be-machined motor shaft is arranged in the inner arc profiling groove, and an air cylinder is installed on the side, away from the profiling groove positioning tool, of the positioning vertical plate. According to the machining and positioning device for the splines at the two ends of the motor shaft, through matched arrangement of a profiling groove positioning tool, an air cylinder and a pressing plate, the machining and positioning device for the splines at the two ends of the motor shaft has the effects that rapid and accurate positioning and fixing can be achieved, and then the machining and positioning device can be applied to an automatic production line; the motor shaft two-end spline machining and positioning device has the effects that splines can be rapidly taken out, and then the device can be applied to an automatic production line.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a spline machining and positioning device at both ends of a motor shaft. Background Art

[0002] At present, new energy vehicles have entered a stage of rapid development, and the main power source of the driving system in new energy vehicles is the drive motor. The motor is driven by electric energy to work, and then the motor outputs mechanical energy to drive the gearbox to work, so that the car can run normally, forward and backward. The working principle of the drive motor is to use the excitation coil to generate a rotating magnetic field to form a magneto-electric rotating torque. The wire is subjected to force in the magnetic field, so that the motor outputs torque. The motor uses the motor shaft to output torque. The motor shaft is an important component in the drive motor and is indispensable.

[0003] The widely used drive motor shafts are generally integrated motor shafts with one end connected by an internal spline or an external spline. Since the precision requirements for each position of the integrated motor shaft are relatively high, in order to ensure the processing accuracy of the splines during processing, the existing technology generally fixes them to the turntable of the gear shaping machine by manual clamping and checks the concentricity with a runout meter before starting processing. The current positioning method of the motor shaft is only suitable for manual operation and cannot achieve automatic disassembly and assembly of the robot, resulting in the inability to use automatic production lines. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a spline machining and positioning device at both ends of a motor shaft, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a spline processing and positioning device at both ends of a motor shaft, comprising a positioning base plate, a profiling groove positioning tooling is fixedly installed on one side above the positioning base plate, a positioning vertical plate is fixedly installed on the other side above the positioning base plate, an inner arc profiling groove is opened on the side of the profiling groove positioning tooling close to the positioning vertical plate, and the motor shaft to be processed is arranged in the inner arc profiling groove, a cylinder is installed on the side of the positioning vertical plate away from the profiling groove positioning tooling, linear bearings are installed on the upper and lower parts of the positioning vertical plate close to the cylinder, an optical axis sliding left and right is arranged inside the linear bearing, a floating plate is installed on one end of the optical axis close to the inner arc profiling groove, a pressure plate is installed on the side of the floating plate close to the inner arc profiling groove, a slot plate is arranged below the floating plate, a U-shaped notch is opened in the middle of the slot plate, swingable buckle plates are installed on both sides of the U-shaped notch, and spring plates are installed on both sides of the slot plate.

[0008] Preferably, the inner side surface of the inner arc profiling groove is an arc surface with the same radius as the motor shaft to be processed, and the two side surfaces of the inner arc profiling groove are outwardly spread in a V-shape, so that the motor shaft to be processed can be easily placed in the inner arc profiling groove.

[0009] Preferably, when the piston rod of the cylinder is pushed out, the pressure plate is pushed to press the motor shaft to be processed to the inside of the inner arc profiling groove and fix it, and at the same time, the U-shaped groove is inserted under the motor shaft to be processed. In this process, the buckle plate overcomes the elastic force of the spring plate and bounces to both sides under the thrust of the cylinder, and then resets under the elastic force of the spring plate. At this time, the lower end of the motor shaft to be processed is clamped in the inner arc profiling groove by the buckle plate.

[0010] Preferably, the material of the pressing plate is rubber with relatively high hardness, that is, the deformation amount due to force is small, and the floating plate is embedded inside by providing a groove with the same length and width as the pressing plate.

[0011] Preferably, the end of the motor shaft to be processed that needs to be splined faces upward, and a feed amount is set when moving downward during gear inserting, and no feed amount is set when moving upward so that the upward pulling force on the motor shaft to be processed is small.

[0012] Preferably, the width of the U-shaped slot is larger than the diameter of the lower end of the motor shaft to be processed, and right-angled trapezoidal holes are provided on both sides of the U-shaped slot. A pin penetrating the end of the buckle plate is installed inside the right-angled trapezoidal hole. The buckle plate and the pin are clearance-matched. The buckle plate rotates around the pin into the U-shaped slot under the elastic force of the spring plate, and the inward rotation angle is limited by the inclined surface of the right-angled trapezoidal hole.

[0013] Preferably, a positioning circular hole concentric with the inner arc profiling groove is opened below the positioning base plate, and the positioning base plate is fixedly mounted on the turntable of the gear shaping machine through the positioning circular hole so that the inner arc profiling groove is concentric with the turntable.

[0014] The utility model provides a spline processing and positioning device at both ends of a motor shaft, which has the following beneficial effects:

[0015] 1. The spline processing and positioning device at both ends of the motor shaft has the effect of realizing fast and accurate positioning and fixing through the coordinated arrangement of the profiling groove positioning tooling, the cylinder and the pressure plate, so that the spline processing and positioning device at both ends of the motor shaft can be applied to the automatic production line. The vertical inner arc profiling groove with a wide outer opening and a profiling arc surface inside is opened on the side of the profiling groove positioning tooling, and there is enough space to allow the manipulator to place the motor shaft to be processed into the inner arc profiling groove. The cylinder pushes the pressure plate to press the motor shaft to be processed into the inner arc profiling groove with a large contact area, so that accurate positioning can be achieved by only pushing the motor shaft to be processed into the inner arc profiling groove with force to complete the fit of the motor shaft to be processed.

[0016] 2. The spline processing and positioning device at both ends of the motor shaft, through the coordinated arrangement of the cylinder, the slot plate and the buckle plate, enables the spline processing and positioning device at both ends of the motor shaft to achieve the effect of rapid removal and application to the automatic production line. The motor shaft to be processed is buckled in the U-shaped groove through the buckle plate. The motor shaft to be processed can be pulled out from the inner arc profiling groove by simply retracting the piston rod of the cylinder. The pulled out motor shaft to be processed is still inserted in the U-shaped groove and maintained in an upright state but is not fixed. At this time, there is enough space on the side of the motor shaft to allow the robot to take out the processed motor shaft, so that the positioning tooling can realize the rapid removal of the motor shaft and can be applied to the automatic production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a three-dimensional view of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the front view of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the top view of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a first partial exploded view of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a second partial explosion view of the utility model.

[0022] In the figure: 1. positioning base plate; 101. positioning circular hole; 2. profiling groove positioning tooling; 201. inner arc profiling groove; 3. positioning vertical plate; 4. motor shaft to be processed; 5. cylinder; 6. linear bearing; 7. optical axis; 8. floating plate; 9. pressure plate; 10. slot plate; 1001. U-shaped notch; 1002. right-angle trapezoidal hole; 11. buckle plate; 12. spring plate; 13. pin. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figures 1 to 5The utility model provides a technical solution: a spline processing and positioning device for both ends of a motor shaft, comprising a positioning base plate 1, a profiling groove positioning tool 2 is fixedly installed on one side above the positioning base plate 1, a positioning vertical plate 3 is fixedly installed on the other side above the positioning base plate 1, an inner arc profiling groove 201 is opened on one side of the profiling groove positioning tool 2 close to the positioning vertical plate 3, a motor shaft 4 to be processed is arranged in the inner arc profiling groove 201, the inner side surface of the inner arc profiling groove 201 is an arc surface with the same radius as the motor shaft 4 to be processed, and the two side surfaces of the inner arc profiling groove 201 are V-shaped and are opened outward, so that the motor shaft 4 to be processed can be easily placed in the inner arc profiling groove 201, and the motor shaft 4 to be processed needs One end of the spline for processing faces upwards, and a feed amount is set when it moves downward during gear insertion, and no feed amount is set when it moves upwards, so that the upward pulling force on the motor shaft 4 to be processed is small. A cylinder 5 is installed on the side of the positioning vertical plate 3 away from the profiling groove positioning fixture 2, and a linear bearing 6 is installed on the upper and lower parts of the positioning vertical plate 3 close to the cylinder 5. An optical axis 7 that slides left and right is arranged inside the linear bearing 6. A floating plate 8 is installed on the end of the optical axis 7 close to the inner arc profiling groove 201, and a pressure plate 9 is installed on the side of the floating plate 8 close to the inner arc profiling groove 201. The material of the pressure plate 9 is rubber with relatively high hardness, that is, the force deformation is small, and the floating plate 8 is embedded inside by opening a groove with the same length and width as the length and width of the pressure plate 9. A slot plate 10 is provided below the movable plate 8, a U-shaped slot 1001 is provided in the middle of the slot plate 10, swingable buckle plates 11 are installed on both sides of the U-shaped slot 1001, and spring plates 12 are installed on both sides of the slot plate 10. When the piston rod of the cylinder 5 is pushed out, the pressing plate 9 is pushed to press the motor shaft 4 to be processed into the inner side of the inner arc profiling groove 201 and fix it. At the same time, the U-shaped slot 1001 is inserted under the motor shaft 4 to be processed. In this process, the buckle plate 11 overcomes the elastic force of the spring plate 12 under the thrust of the cylinder 5 and bounces to both sides, and then resets under the elastic force of the spring plate 12. At this time, the lower end of the motor shaft 4 to be processed is stuck in the inner arc profiling groove 201 by the buckle plate 11, and the U-shaped slot 1 The width dimension of 001 is larger than the diameter of the lower end of the motor shaft 4 to be processed, and right-angled trapezoidal holes 1002 are provided on both sides of the U-shaped notch 1001. A pin 13 penetrating the end of the gusset plate 11 is installed inside the right-angled trapezoidal hole 1002. The gusset plate 11 and the pin 13 are clearance-matched. The gusset plate 11 rotates around the pin 13 toward the inside of the U-shaped notch 1001 under the elastic force of the spring plate 12. The inward rotation angle is limited by the inclined surface of the right-angled trapezoidal hole 1002. A positioning circular hole 101 concentric with the inner arc profiling groove 201 is provided below the positioning base plate 1. The positioning base plate 1 is fixedly installed on the turntable of the gear shaping machine through the positioning circular hole 101 so that the inner arc profiling groove 201 is concentric with the turntable.

[0025] When in use, first fix the profiling groove positioning tool 2 adapted to the motor shaft 4 to be processed to the positioning base plate 1, and require the inner arc profiling groove 201 to be concentric with the positioning circular hole 101, and further install the positioning device on the turntable of the gear shaping machine through the positioning base plate 1. At this time, the positioning circular hole 101 is required to be concentric with the turntable, that is, the inner arc profiling groove 201 is concentric with the turntable, wherein the signal of the cylinder 5 is connected with the air pipe through a slip ring. When processing the motor shaft 4 to be processed, the motor shaft 4 to be processed is placed inside from the opening side of the inner arc profiling groove 201 by manual or mechanical hands. At this time, the motor shaft 4 to be processed is on itself Under the action of gravity and the shaft shoulder, it is temporarily placed in the inner arc profiling groove 201, and the cylinder 5 works to push the floating plate 8 toward the motor shaft 4 to be processed through the piston rod, and the pressure plate 9 squeezes the motor shaft 4 to be processed toward the inner side of the inner arc profiling groove 201. Since the inner side of the inner arc profiling groove 201 is an arc surface with the same radius as the motor shaft 4 to be processed, and the arc surface area is large, it is only necessary to push the motor shaft 4 to be processed into the inner arc profiling groove 201 with force to complete the fit with the motor shaft 4 to be processed, and accurate positioning can be achieved. At the same time, the U-shaped notch 1001 in the middle of the slot plate 10 is also Insert it to the bottom of the motor shaft 4 to be processed. During this process, the buckle plate 11 overcomes the elastic force of the spring plate 12 under the thrust of the cylinder 5 and bounces to both sides, and then resets under the elastic force of the spring plate 12. At this time, the lower end of the motor shaft 4 to be processed is stuck in the inner arc profiling groove 201 by the buckle plate 11. The gear shaping machine further works on the upper end of the motor shaft 4 to be processed to process the inner spline or outer spline. During the gear shaping process, a feed amount is set when the gear shaping moves downward, and no feed amount is set when the gear moves upward, so that the upward pulling force on the motor shaft 4 to be processed is small, so that it will not be pulled upward. After the processing is completed The cylinder 5 works to pull the floating plate 8 back to its original position, and the slot plate 10 also retracts at this time. Since the lower end of the motor shaft 4 to be processed is held in the U-shaped slot 1001 by the buckle plate 11, the processed motor shaft is also pulled out of the inner arc contoured slot 201 together with the floating plate 8. Finally, the processed motor shaft is inserted in the U-shaped slot 1001 and remains in an upright state without being locked. It is very simple to remove the motor shaft by simply pulling it up. The above-mentioned motor shaft is very simple to install and remove, and can be completed by a robot, so the positioning tooling can be used in an automated production line.

[0026] In summary, the spline processing and positioning device at both ends of the motor shaft uses the vertical inner arc profiling groove 201 with a wide outer opening and a profiling arc surface inside opened on the side of the profiling groove positioning tool 2, and when placing the motor shaft 4 to be processed, there is a large enough space on one side of the inner arc profiling groove 201 to allow the manipulator to place the motor shaft 4 to be processed into the inner arc profiling groove 201. After the motor shaft 4 to be processed is placed in the inner arc profiling groove 201, it is pre-placed in the inner arc profiling groove 201 under the action of gravity. After the manipulator leaves, the cylinder 5 pushes the pressing plate 9 to press the motor shaft 4 to be processed into the inner arc profiling groove 201. Since the shape and size of the inner side surface of the inner arc profiling groove 201 are the same as the shape and size of the outer surface of the motor shaft 4 to be processed and the contact area is large, it only needs to be forced. Precise positioning can be achieved by pushing the motor shaft 4 to be processed into the inner arc profiling groove 201 to complete the fit of the motor shaft 4 to be processed. When fixing the motor shaft 4 to be processed, the slot plate 10 is inserted under the motor shaft 4 to be processed and the shaft body is buckled in the U-shaped groove 1001 through the buckle plate 11. When it is necessary to remove the motor shaft 4 to be processed, the piston rod of the cylinder 5 only needs to be retracted to pull the motor shaft 4 out of the inner arc profiling groove 201. The pulled out motor shaft 4 to be processed is still inserted in the U-shaped groove 1001 and maintained in an upright state but not fixed. At this time, there is enough space on the side of the processed motor shaft to allow the robot to take out the processed motor shaft, so that the positioning tool can quickly remove the motor shaft and can be applied to automatic production lines.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spline processing and positioning device for both ends of a motor shaft, comprising a positioning base plate (1), characterized in that: A profiling groove positioning tool (2) is fixedly installed on one side above the positioning base plate (1), and a positioning vertical plate (3) is fixedly installed on the other side above the positioning base plate (1). An inner arc profiling groove (201) is provided on the side of the profiling groove positioning tool (2) close to the positioning vertical plate (3), and a motor shaft (4) to be processed is arranged in the inner arc profiling groove (201). A cylinder (5) is installed on the side of the positioning vertical plate (3) away from the profiling groove positioning tool (2), and linear bearings (6) are installed above and below the positioning vertical plate (3) close to the cylinder (5). A left-right sliding optical axis (7) is arranged inside the linear bearing (6), a floating plate (8) is installed at one end of the optical axis (7) close to the inner arc profiling groove (201), a pressing plate (9) is installed at one side of the floating plate (8) close to the inner arc profiling groove (201), a slot plate (10) is arranged below the floating plate (8), a U-shaped notch (1001) is opened in the middle of the slot plate (10), swingable buckle plates (11) are installed on both sides of the U-shaped notch (1001), and spring plates (12) are installed on both sides of the slot plate (10).

2. The motor shaft spline processing and positioning device according to claim 1, characterized in that: The inner side surface of the inner arc profiling groove (201) is an arc surface with a radius dimension identical to that of the motor shaft (4) to be processed, and the two side surfaces of the inner arc profiling groove (201) are outwardly spread in a V-shape, so that the motor shaft (4) to be processed can be easily placed in the inner arc profiling groove (201).

3. The motor shaft spline processing and positioning device according to claim 1, characterized in that: When the piston rod of the cylinder (5) is pushed out, the pressing plate (9) is pushed to press the motor shaft (4) to be processed into the inner side of the inner arc profiling groove (201) and fix it. At the same time, the U-shaped notch (1001) is inserted under the motor shaft (4) to be processed. In this process, the buckle plate (11) is rebounded to both sides under the thrust of the cylinder (5) to overcome the elastic force of the spring plate (12) and then reset under the elastic force of the spring plate (12). At this time, the lower end of the motor shaft (4) to be processed is clamped in the inner arc profiling groove (201) by the buckle plate (11).

4. The motor shaft spline processing and positioning device according to claim 1, characterized in that: The material of the pressing plate (9) is rubber with relatively high hardness, i.e., the deformation amount due to force is small, and the floating plate (8) is embedded inside by providing a groove with the same length and width as the pressing plate (9).

5. The motor shaft spline processing and positioning device according to claim 1, characterized in that: The end of the motor shaft (4) to be processed that needs to be processed with the spline faces upward, and a feed amount is set when moving downward during gear insertion, and no feed amount is set when moving upward, so that the upward pulling force on the motor shaft (4) to be processed is small.

6. The motor shaft spline processing and positioning device according to claim 1, characterized in that: The width of the U-shaped notch (1001) is larger than the diameter of the lower end of the motor shaft (4) to be processed. Right-angled trapezoidal holes (1002) are provided on both sides of the U-shaped notch (1001). A pin (13) penetrating the end of the buckle plate (11) is installed inside the right-angled trapezoidal hole (1002). The buckle plate (11) and the pin (13) are clearance-matched. The buckle plate (11) is rotated around the pin (13) toward the inside of the U-shaped notch (1001) by the elastic force of the spring plate (12). The inward rotation angle is limited by the inclined surface of the right-angled trapezoidal hole (1002).

7. The motor shaft spline processing and positioning device according to claim 1, characterized in that: A positioning circular hole (101) concentric with the inner arc profiling groove (201) is provided below the positioning base plate (1). The positioning base plate (1) is fixedly mounted on the turntable of the gear shaping machine through the positioning circular hole (101) so that the inner arc profiling groove (201) is concentric with the turntable.

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