A rotor rotary cutting jig

Abstract

The application discloses a rotor rotary cutting clamp and relates to the technical field of tooling clamps, which comprises first servo motors, a rotary platform, a rotary table, bearing plates, bearing seats and a tray arranged in sequence from bottom to top, clamping assemblies are respectively arranged on the bearing plates on the two sides of the bearing seat, a second servo motor is arranged on one side of the bearing seat, the second servo motor is in transmission connection with the tray through a belt, and a rotor workpiece is placed on the tray; the second servo motor drives a flange shaft through a belt, the flange shaft synchronously drives the tray to rotate, automatic adjustment of the tray is realized, multiple cutting point positions existing on the rotor workpiece can be conveniently machined, manual input is reduced, machining precision and machining efficiency are improved, the first servo motors are adopted to realize overall rotation, double servo driving is adopted to realize rotation of the overall structure and partial structures respectively, and flexibility during weight cutting of the rotor workpiece is improved.

Description

Technical Field

[0001] This application relates to the field of tooling and fixture technology, and in particular to a rotor rotary cutting fixture. Background Technology

[0002] After the rotor is produced, it needs to be dynamically balanced. Rotors that do not meet the dynamic balance specifications need to be deweighted. Rotor deweighting refers to the process of achieving balance by removing excess weight from the rotor. There are many ways to deweight the rotor, such as cutting. During cutting operations, a clamp is needed to hold the rotor in place.

[0003] Sometimes, heavy-duty cutting requires cutting multiple points on the rotor, but existing fixtures do not have the function of driving the rotor to rotate. To change the position of the rotor, it is necessary to open the fixture and operate manually, which is time-consuming and labor-intensive, and the accuracy of manual adjustment is low. Utility Model Content

[0004] Purpose of the invention: This application provides a rotor rotation cutting fixture, which aims to improve the technical problem of insufficient flexibility in adjusting rotor workpieces on the fixture.

[0005] Technical solution: This application provides a rotor rotary cutting fixture, including a first servo motor and a rotary clamping device. The first servo motor is disposed below the rotary clamping device and is used to drive the rotary clamping device to move. The rotary clamping device includes a clamping assembly, a material tray and a second servo motor. The second servo motor is drivenly connected to the material tray. The material tray is used to place rotor workpieces. The clamping assembly abuts against the rotor workpieces.

[0006] By adopting the above technical solution, a material tray for loading is provided. The material tray is driven to rotate by a second servo motor, so as to realize the flexible rotation of the rotor workpiece, which facilitates the processing of multiple cutting points on the rotor workpiece. The first servo motor drives the rotary clamping device to rotate, so as to realize the flexible rotation of the entire fixture. The dual servo rotary fixture composed of the first servo motor and the second servo motor improves the flexibility of the fixture and the rotor workpiece.

[0007] Furthermore, a rotating platform is provided above the first servo motor, and the rotating clamping device also includes a support plate and a support seat. The support plate is installed on the rotating platform, and the support seat and clamping assembly are both installed on the upper surface of the support plate. A pad is provided on the top of the support seat, and the material tray is placed above the pad with a gap between it and the pad.

[0008] By adopting the above technical solution, the first servo motor drives the rotating platform to rotate synchronously. The rotating platform serves as a support and speed reducer, which improves the stability and consistency of the rotating clamping device during rotation.

[0009] Furthermore, the material tray includes a flange shaft and a product guide seat disposed on the top of the flange shaft. The flange shaft extends downward through the pad and into the interior of the bearing seat. A driven wheel is disposed on a portion of the flange shaft located inside the bearing seat. A driving wheel is disposed on the output shaft of the second servo motor. Belts are disposed on the driving wheel and the driven wheel.

[0010] By adopting the above technical solution, the second servo motor drives the material tray to rotate through belt drive. The belt drive structure is simple and has good stability. The product guide seat can improve the positioning accuracy of the rotor workpiece.

[0011] Furthermore, the product guide seat has a vertically arranged positioning pin in the middle, the rotor workpiece is fastened on the product guide seat, the product guide seat is also provided with multiple limiting pins, the multiple limiting pins are arranged in a ring at intervals on the side of the product guide seat, each of the limiting pins is provided with a ball, at least a part of the ball protrudes from the limiting pin, and the outer surface of the product guide seat is an arc surface.

[0012] By adopting the above technical solution, the positioning pins further improve the positioning accuracy of the rotor workpiece, and by using multiple limiting pins arranged around the product guide seat, the limiting effect on the workpiece rotor is improved, so that the rotor workpiece rolls along the balls on the limiting pins to realize loading and unloading, without sticking to the product guide seat and generating friction, thus reducing wear during loading and unloading.

[0013] Furthermore, the bearing seat has a cavity inside, in which a bearing seat and a guide assembly surrounding the bearing seat are provided. The flange shaft passes through the bearing seat, the driven wheel is located below the bearing seat, and a locking nut is provided at the bottom of the flange shaft. The second servo motor is also provided with a motor mounting base, one end of which extends into the cavity and is fixedly connected to the bearing seat. A pulley protective cover is also provided between the second servo motor and the bearing seat, and the driving wheel is located inside the pulley protective cover.

[0014] By adopting the above technical solution, the cavity of the bearing seat is used to accommodate and protect the various transmission components and guide components, the outer side of the bearing seat is used to install the second servo motor, and the guide components are equipped with springs to provide a certain buffering effect when pressed.

[0015] Furthermore, there are two clamping assemblies arranged symmetrically and opposite to each other. Each clamping assembly includes a cylinder seat, a lifting cylinder and a pressing block arranged sequentially from bottom to top. The lifting cylinder is mounted on the upper end face of the support plate through the cylinder seat. The piston rod of the lifting cylinder is connected to the pressing block. The pressing block is stepped and has an arc-shaped pressing groove on the side of the pressing block facing the material tray.

[0016] By adopting the above technical solution and setting two synchronously moving clamping components, the consistency and stability of the clamping operation are improved. The arc-shaped clamping groove is conducive to the fit with the edge of the rotor workpiece, reducing damage to the rotor workpiece during clamping.

[0017] Furthermore, the lifting cylinder is also provided with a vertically installed guide block, which is located below the pressing block. The guide block is provided with a proximity sensor, and a pair of photoelectric switches are also provided on the guide block on one side of the proximity sensor. The side of the lifting cylinder facing away from the material tray is provided with multiple air pipe joints.

[0018] By adopting the above technical solution, the guide block and proximity sensor are used to provide a limit for the stroke of the lifting cylinder, preventing the clamping block from being too low and causing damage to the rotor workpiece.

[0019] Furthermore, the rotating platform includes a hollow rotary table and a helical gear reducer. The upper end face of the hollow rotary table is provided with a turntable, the bearing plate is installed on the upper end face of the turntable, the helical gear reducer is fixedly installed at the bottom of the rotary table, and the first servo motor is installed at the lower end of the helical gear reducer. The first servo motor is connected to the helical gear reducer in a transmission manner.

[0020] By adopting the above technical solution, the first servo motor drives the rotating platform to rotate, the rotating platform synchronously drives the turntable, the turntable synchronously drives the support plate, and the support plate synchronously drives the rotating clamping device installed above it to rotate, realizing overall rotation and further increasing flexibility.

[0021] Furthermore, multiple sensor assemblies are provided on both the turntable and the hollow rotating platform. Through holes are opened in the middle of the support plate, the turntable, and the hollow rotating platform, and the through holes on the support plate, the turntable, and the hollow rotating platform are interconnected.

[0022] By adopting the above technical solution, multiple sensor components are used for positioning and limiting of the cutting fixture, and through holes are opened to reduce the overall weight of the fixture, making it easier for the fixture to be applied to machine tools.

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

[0024] 1. A second servo motor is used to drive the flange shaft via a belt. The flange shaft synchronously drives the material tray to rotate, realizing the automatic adjustment of the material tray. This facilitates the processing of multiple cutting points on the rotor workpiece, reduces manual input, and improves processing accuracy and efficiency.

[0025] 2. The symmetrically arranged double clamping components achieve synchronous clamping, which improves the consistency and stability of the clamping operation. The arc-shaped pressure groove at the end of the clamping block is conducive to fitting with the edge of the rotor workpiece, reducing wear on the rotor workpiece during clamping.

[0026] 3. The first servo motor drives the turntable through the rotating platform, which synchronously drives the rotating clamping device to rotate, improving the stability and consistency of the rotating clamping device when it rotates as a whole. The dual-servo rotating fixture composed of the first servo motor and the second servo motor improves the flexibility of the fixture. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the rotary clamping device according to an embodiment of this application;

[0029] Figure 3 This is an exploded view of the rotary clamping device according to an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the clamping component structure according to an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. First servo motor; 2. Rotary platform; 21. Hollow rotary table; 22. Helical gear reducer; 3. Turntable; 4. Bearing plate; 5. Bearing seat; 51. Bearing seat; 52. Guide assembly; 53. Pulley protective cover; 54. Pad; 6. Clamping assembly; 61. Cylinder seat; 62. Lifting cylinder; 63. Pressing block; 64. Guide block; 65. Proximity sensor; 66. Through-beam photoelectric switch; 7. Material tray; 71. Flange shaft; 72. Product guide seat; 73. Limit pin shaft; 74. Positioning pin shaft; 75. Driven wheel; 8. Rotor workpiece; 9. Second servo motor; 91. Motor mounting base; 92. Drive wheel; 10. Belt. Detailed Implementation

[0032] The following combination Figures 1-4 This application will be described in further detail.

[0033] This application discloses a rotor rotation cutting fixture. (Refer to...) Figure 1 , Figure 2As shown, the fixture includes, from bottom to top, a first servo motor 1, a rotating platform 2, a turntable 3, a support plate 4, a support base 5, and a material tray 7. The rotating platform 2 consists of a hollow rotating table 21 and a helical gear reducer 22. The helical gear reducer 22 is installed at the bottom of the hollow rotating table 21, and the first servo motor 1 is installed at the bottom of the helical gear reducer 22. The first servo motor 1 drives the hollow rotating table 21 to rotate through the helical gear reducer 22. The turntable 3 is installed on the top of the hollow rotating table 21. Multiple sensor assemblies are installed on one side of both the turntable 3 and the hollow rotating table 21. These sensor assemblies are sensor seats and proximity sensors. The sensor assemblies are used for positioning and limiting during rotation. The support plate 4 is installed on the top of the turntable 3. A rotary clamping device consisting of a bearing seat 5, a material tray 7, a clamping assembly 6, and a second servo motor 9 is installed on the upper surface of the bearing plate 4. When the hollow rotary table 21 rotates, it synchronously drives the turntable 3 to rotate. The turntable 3 synchronously drives the rotary clamping device to rotate. The first servo motor 1 drives the rotary clamping device to rotate as a power source. It is used to cooperate with the cutting equipment so that when the cutting tool on the cutting equipment is cutting, the cutting area is expanded by the rotation of the rotary clamping device. For example, when the cutting tool is cutting in place, it cuts a square or round opening on the rotor workpiece 8. When the rotary clamping device is driven to rotate, it can expand the opening into a rectangular or arc-shaped long groove based on the cutting tool, which improves the weight removal efficiency and eliminates the need to adjust the position of the cutting tool multiple times.

[0034] Specifically, refer to Figure 1 , Figure 2 , Figure 3As shown, the support seat 5 is installed on the upper end face of the support plate 4. Two clamping components 6 are symmetrically and oppositely arranged on the support plates 4 on both sides of the support seat 5. A pad 54 is installed on the top of the support seat 5. The material tray 7 is placed above the pad 54. A gap is left between the material tray 7 and the pad 54 to facilitate the rotation of the material tray 7. The material tray 7 consists of a flange shaft 71 and a product guide seat 72. The product guide seat 72 is fixedly installed on the top of the flange shaft 71. The end of the flange shaft 71 facing away from the product guide seat 72 extends downward into the cavity inside the support seat 5. The part of the flange shaft 71 located inside the cavity has a driven wheel 75 at its lower part. A locking nut is provided on the flange shaft 71 below the driven wheel 75. A bearing seat 51 is also provided in the cavity of the support seat 5. A bearing is installed in the middle of the flange shaft 71, through which the driven wheel 75 is located below the bearing housing 51. A motor mounting base 91 is installed on the second servo motor 9, with one end of the motor mounting base 91 extending into the cavity and fixedly connected to the bearing housing 51. A drive wheel 92 is provided on the output shaft of the second servo motor 9 below the motor mounting base 91. The drive wheel 92 and the driven wheel 75 are connected by a belt 10. In use, the second servo motor 9 drives the flange shaft 71 to rotate, and the flange shaft 71 synchronously drives the product guide seat 72 to rotate. The rotor workpiece 8, which is fastened to the product guide seat 72, rotates synchronously. The rotor workpiece 8 can be conveniently rotated by the second servo motor 9 without manual intervention, which improves the accuracy and efficiency of the rotor workpiece 8 during rotation.

[0035] Reference Figure 2 , Figure 3 As shown, the tray 7 is used to place the workpiece rotor. The outer surface of the upper part of the product guide seat 72 is arc-shaped, which facilitates the workpiece rotor to be fastened onto the product guide seat 72. The middle part of the product guide seat 72 has a vertically arranged positioning pin 74 for centering and positioning the workpiece rotor. The product guide seat 72 is also provided with multiple limiting pins 73, which are arranged in a ring at intervals on the side of the product guide seat 72. During assembly, the limiting pins 73 pass through the product guide seat 72 and protrude from the side of the product guide seat 72 that is used to contact the workpiece rotor, that is, the outer side of the product guide seat 72. On the side, a ball bearing is installed inside the protruding limiting pin 73. At least part of the ball bearing protrudes from the limiting pin 73. In use, the opening of the workpiece rotor is fastened to the product guide seat 72 from top to bottom. The limiting pin 73, together with the ball bearing, provides limiting and sliding connection for the rotor workpiece 8. When the workpiece rotor moves downward, its inner wall contacts the ball bearing. The downward force causes the ball bearing to roll, realizing the sliding connection between the workpiece rotor and the ball bearing. This reduces the wear of the workpiece rotor when loading and unloading, and prevents the workpiece rotor from sticking to the product guide seat 72 when moving up and down, thus improving the convenience and flexibility of the rotor workpiece 8.

[0036] Reference Figure 1 , Figure 3As shown, the bearing seat 5 has an opening communicating with the cavity on the side facing the second servo motor 9. A pulley protective cover 53 is provided on the outside of the opening, and the drive wheel 92 is located inside the pulley protective cover 53. A guide assembly 52 is also provided in the cavity of the bearing seat 5. There are multiple guide assemblies 52. During installation, multiple guide assemblies 52 surround the outer periphery of the bearing seat 51. Multiple guide assemblies 52 are respectively set on the other three sides of the bearing seat 51 except the side facing the drive wheel 92. The guide assemblies 52 are vertically arranged. The top end of the guide assembly 52 passes through the bearing seat 51 and the bearing seat 5 and connects to the lower end face of the pad 54. The bottom end of the guide assembly 52 connects to the upper end face of the bearing plate 4. Each guide assembly 52 consists of a guide rod and a spring sleeved on the guide rod. The spring is located on the guide rod between the bearing seat 51 and the bearing plate 4. The cavity of the bearing seat 5 is used to accommodate and protect each transmission component and the guide assembly 52. ​​The outside of the bearing seat 5 is used to install the second servo motor 9. The guide assembly 52 is provided with a spring to provide a certain buffering effect when pressed.

[0037] Reference Figure 1 , Figure 2 , Figure 4 As shown, the clamping assemblies 6, respectively located on both sides of the bearing seat 5, consist of a cylinder seat 61, a lifting cylinder 62, and a clamping block 63. The lifting cylinder 62 is fixedly mounted on the bearing plate 4 via the cylinder seat 61. The clamping block 63 is connected to the piston rod of the lifting cylinder 62. The lifting cylinder 62 drives the clamping block 63 to move up and down. The two clamping assemblies 6 move synchronously, enabling simultaneous clamping of the rotor workpiece 8 during the clamping operation, thus improving the consistency and stability of the clamping operation. The clamping block 63 is stepped, and the side of the clamping block 63 that contacts the rotor workpiece 8 is provided with an arc-shaped pressure groove. It facilitates contact with the surface of the rotor workpiece 8, improves the fit with the rotor workpiece 8, and reduces damage to the rotor workpiece 8; the lifting motor is also equipped with a vertically installed guide block 64, the top of the guide block 64 has an opening groove, and the middle of the opening groove has a proximity sensor 65. The opening groove and the proximity sensor 65 are used to limit the pressing block 63 when it is pressed down, to prevent the pressing block 63 from being too low and causing damage to the rotor workpiece 8. A pair of photoelectric switches 66 are also provided on the guide block 64 on the side of the proximity sensor 65. The side of the lifting cylinder 62 facing away from the material tray 7 is equipped with multiple air pipe joints.

[0038] The implementation principle of a rotor rotary cutting fixture according to an embodiment of this application is as follows: First, the rotor workpiece 8 is placed on the product guide seat 72. The second servo motor 9 drives the entire material tray 7 to rotate, so that the first cutting point on the rotor workpiece 8 faces the cutting equipment. The two clamping components press down synchronously to clamp the rotor workpiece 8. The cutting equipment cuts the rotor workpiece 8 to remove weight. At this time, the first servo motor 1 drives the entire rotary clamping device to rotate. The rotor workpiece 8 moves relative to the cutting tool, enlarging the cut slot and increasing the weight removed. When the cutting at this point is completed, the first servo motor 1 stops, and the clamping components drive... The moving clamping block 63 rises to remove the rotor workpiece 8 for unloading. When the rotor workpiece 8 needs to be processed at multiple cutting points, after the first cutting point is completed based on the above steps, the clamping assembly drives the clamping block 63 to rise, releasing the clamping on the rotor workpiece 8. The second servo motor 9 starts and drives the material tray 7 to rotate to the next cutting point. After the position adjustment is completed, the clamping assembly clamps the rotor workpiece 8 again to perform the rotational cutting in the above steps. The above steps are repeated to complete the cutting operations at multiple points in sequence, which helps to improve the automation level of the fixture and facilitates the application of the fixture in highly automated machine tools.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotor rotary cutting fixture, characterized in that: It includes a first servo motor (1) and a rotary clamping device. The first servo motor (1) is located below the rotary clamping device and is used to drive the rotary clamping device to move. The rotary clamping device includes a clamping assembly (6), a material tray (7) and a second servo motor (9). The second servo motor (9) is connected to the material tray (7) for transmission. The material tray (7) is used to place the rotor workpiece (8). The clamping assembly (6) abuts against the rotor workpiece (8).

2. The rotor rotary cutting fixture according to claim 1, characterized in that: A rotating platform (2) is provided above the first servo motor (1). The rotating clamping device also includes a bearing plate (4) and a bearing seat (5). The bearing plate (4) is installed on the rotating platform (2). The bearing seat (5) and the clamping assembly (6) are both installed on the upper surface of the bearing plate (4). A pad (54) is provided on the top of the bearing seat (5). The material tray (7) is set above the pad (54) and a gap is left between it and the pad (54).

3. The rotor rotary cutting fixture according to claim 2, characterized in that: The tray (7) includes a flange shaft (71) and a product guide seat (72) located on the top of the flange shaft (71). The flange shaft (71) extends downward through the pad (54) and into the interior of the bearing seat (5). A driven wheel (75) is provided on a part of the flange shaft (71) located inside the bearing seat (5). A driving wheel (92) is provided on the output shaft of the second servo motor (9). A belt (10) is provided on the driving wheel (92) and the driven wheel (75).

4. The rotor rotary cutting fixture according to claim 3, characterized in that: The product guide seat (72) has a vertically arranged positioning pin (74) in the middle. The rotor workpiece (8) is fastened to the product guide seat (72). The product guide seat (72) is also provided with multiple limiting pins (73). The multiple limiting pins (73) are arranged in a ring at intervals on the side of the product guide seat (72). Each limiting pin (73) is provided with a ball. At least a part of the ball protrudes from the limiting pin (73). The outer surface of the product guide seat (72) is an arc surface.

5. The rotor rotary cutting fixture according to claim 3, characterized in that: The bearing seat (5) has a cavity inside, in which a bearing seat (51) and a guide assembly (52) surrounding the bearing seat (51) are provided. The flange shaft (71) passes through the bearing seat (51). The driven wheel (75) is located below the bearing seat (51). A locking nut is provided at the bottom of the flange shaft (71). The second servo motor (9) is also provided with a motor mounting base (91). One end of the motor mounting base (91) extends into the cavity and is fixedly connected to the bearing seat (51). A pulley protective cover (53) is also provided between the second servo motor (9) and the bearing seat (5). The driving wheel (92) is located inside the pulley protective cover (53).

6. The rotor rotary cutting fixture according to claim 2, characterized in that: Two clamping assemblies (6) are symmetrically arranged opposite each other. Each clamping assembly (6) includes a cylinder seat (61), a lifting cylinder (62), and a pressing block (63) arranged sequentially from bottom to top. The lifting cylinder (62) is mounted on the upper end face of the bearing plate (4) through the cylinder seat (61). The piston rod of the lifting cylinder (62) is connected to the pressing block (63). The pressing block (63) is stepped and has an arc-shaped pressing groove on the side of the pressing block (63) facing the material tray (7).

7. The rotor rotary cutting fixture according to claim 6, characterized in that: The lifting cylinder (62) is also provided with a vertically installed guide block (64), which is located below the pressing block (63). The guide block (64) is provided with a proximity sensor (65), and a pair of photoelectric switches (66) are also provided on the guide block (64) on one side of the proximity sensor (65). The side of the lifting cylinder (62) facing away from the material tray (7) is provided with multiple air pipe joints.

8. The rotor rotary cutting fixture according to claim 2, characterized in that: The rotating platform (2) includes a hollow rotating table (21) and a helical gear reducer (22). A turntable (3) is provided on the upper surface of the hollow rotating table (21). The bearing plate (4) is installed on the upper surface of the turntable (3). The helical gear reducer (22) is fixedly installed at the bottom of the rotating table (3). The first servo motor (1) is installed at the lower end of the helical gear reducer (22). The first servo motor (1) is connected to the helical gear reducer (22) in a transmission connection.

9. The rotor rotary cutting fixture according to claim 8, characterized in that: Multiple sensor assemblies are provided on the turntable (3) and the hollow rotary table (21). Through holes are opened in the middle of the bearing plate (4), the turntable (3) and the hollow rotary table (21), and the through holes on the bearing plate (4), the turntable (3) and the hollow rotary table (21) are connected.

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