CN219724831U

CN219724831U - Gear grinding clamping tool

Info

Publication number: CN219724831U
Application number: CN202320720266.8U
Authority: CN
Inventors: 袁劲松; 蔡来英; 袁达
Original assignee: Zhejiang Laiyuan Machinery Co ltd
Current assignee: Zhejiang Laiyuan Machinery Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-09-22
Anticipated expiration: 2033-03-30

Abstract

The utility model provides a gear grinding and clamping tool which solves the problems of inconvenient adjustment of bevel gear grinding angles and the like. The utility model has the advantages of good adaptability, stable structure and the like.

Description

Gear grinding clamping tool

Technical Field

The utility model belongs to the technical field of gear clamps, and particularly relates to a gear grinding and clamping tool.

Background

Gear machining typically begins with rough cutting of the raw material into sheet metal to form the general shape of the gear. The gears are then moved to a more precise machine, removing more material; this process may need to be repeated several times. The gear part then goes to a final grinding process. The gear grinding process is to finish the quenched gear on a gear grinding machine, and the precision of the gear after gear grinding can reach more than 6 levels. According to the tooth profile forming method, the grinding teeth also have two methods of forming and generating, but most types of grinding machines process gears by generating. However, in the actual machining process, the gear grinding angle cannot be adjusted in time in the gear grinding process, and the requirements of bevel gear grinding cannot be met. In addition, the conventional gear grinding fixture has poor adaptability to gears of different specifications, and stability in the gear machining process cannot be guaranteed.

In order to solve the defects existing in the prior art, long-term exploration is performed, and various solutions are proposed. For example, chinese patent literature discloses an adjustable positioning fixture [201911348386.4] for gear grinding, it includes base, first servo brake motor, electric cylinder and second servo brake motor, one side welding at base top has first mounting panel, one side welding that first mounting panel is close to the second mounting panel has first device storehouse, the avris fixed mounting of movable block has the gag lever post, one side fixed mounting that first mounting panel kept away from the second mounting panel has first servo brake motor, slide mechanism is installed to the intermediate position department at base top, the outside cover of first pivot is established and is fixed with first gear body, one side fixed mounting that the second mounting panel is close to first mounting panel has electric cylinder.

The problem of gear machining stability is solved to a certain extent by the scheme, but the scheme still has a plurality of defects, such as the problem that the requirements on bevel gear grinding angle adjustment cannot be met.

Disclosure of Invention

Aiming at the problems, the utility model provides a gear grinding clamping tool which is reasonable in design and convenient to adjust the bevel gear grinding angle.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a gear grinding presss from both sides tight frock, includes the dabber, the dabber is inside to be provided with locking mechanism, and the dabber both ends are connected and are provided with rotation actuating mechanism through universal joint and clamp holder body rotation respectively between, clamp holder body lower extreme and clamp base sliding connection, are provided with lift actuating mechanism between clamp base and the clamp holder body, are provided with the mechanism that opens and shuts between dabber and the universal joint. The universal coupler is utilized, the rotation driving mechanism drives the mandrel and the clamped gear to rotate in an inclined state, and the lifting driving mechanism and the slidable clamping frame body are utilized to flexibly adjust the inclination angle of the mandrel, so that the requirements of bevel gear grinding at different angles are met.

In the gear grinding clamping tool, the locking mechanism comprises locking pins which are symmetrically arranged relative to the center of the mandrel, an elastic resetting piece is arranged between the locking pins and the mandrel, and a synchronous telescopic assembly is arranged between the locking pins and the mandrel. The locking mechanism has better clamping stability on the gear.

In the gear grinding clamping tool, the synchronous telescopic assembly comprises a driving shaft rotatably arranged in the mandrel, the driving shaft is provided with driving blocks in one-to-one correspondence with the locking pins, the driving blocks are provided with driving surfaces abutted against the locking pins, and the driving shaft is in transmission connection with the locking motor through the variable speed transmission assembly. The synchronous telescopic assembly is utilized to adapt to gear center holes with different calibers, so that the gear grinding requirements of different specifications are met.

In the gear grinding clamping tool, the variable-speed transmission assembly comprises a transmission gear fixed at the tail end of the mandrel, and the transmission gear is in transmission connection with the locking motor through the planetary gear set. The variable speed drive assembly ensures that the spindle provides a large clamping drive torque.

In the gear grinding clamping tool, the rotation driving mechanism comprises a driving rod arranged at the end head of the universal coupler, a lifting base is arranged in the clamping frame body in a vertical sliding mode, the driving rod is rotationally connected with the lifting base, and a reversing gear set and a rotation motor are arranged between the inside of the lifting base and the driving rod. The rotation driving mechanism drives the mandrel to rotate, the rotation quantity is precisely controlled, and the gear grinding precision is ensured.

In the gear grinding clamping tool, the lifting driving mechanism is arranged in the clamping frame body and extends along the vertical direction, the lifting base is slidably arranged in the lifting groove, and the lifting screw rod is arranged between the lifting base and the clamping frame body. The lifting driving mechanism adjusts the inclination angle and the integral height of the mandrel and adapts to the corresponding grinding disc body.

In the gear grinding clamping tool, the opening and closing mechanism comprises an opening and closing groove arranged on the driving rod, an opening and closing strip clamped with the opening and closing groove is fixed at the end head of the universal coupling, and a fixing assembly is arranged between the opening and closing groove and the opening and closing strip. The opening and closing mechanism controls the mandrel to open and close for replacing the gear.

In the gear grinding clamping tool, the fixing assembly comprises a fixing sliding sleeve which is in sliding connection with the driving rod, the fixing sliding sleeve is fixedly connected with the driving rod and the universal coupling end in a sliding mode, and a threaded connection portion is arranged between the fixing sliding sleeve and the universal coupling end. The fixing component ensures the sealing effect of the mandrel and the universal coupling, ensures the stable transmission,

in the gear grinding clamping tool, the bottom of the clamping base is provided with the fixing feet, the fixing feet are provided with the fixing holes, the upper end of the clamping base is provided with the material receiving frame, and the sliding screw is arranged between the clamping base and the clamping frame body. The clamping frame body horizontally slides by utilizing a sliding screw rod and is matched with the rotation driving mechanism to adjust the azimuth of the mandrel.

In the gear grinding clamping tool, the indication mark and the optical sensor are arranged on the mandrel. When the gear is ground, the indication mark and the optical sensor assist the gear to clamp, so that grinding precision is ensured.

Compared with the prior art, the utility model has the advantages that: the spindle penetrates through the gear hole and adjusts the inclination angle through the lifting driving mechanism, and the assembled rotation driving mechanism is matched with the universal coupling to drive the spindle to rotate, so that the grinding requirement of bevel gears at any angle is met; the locking mechanism can adapt to gear holes with different calibers, and has good adaptability to gears with different specifications; the opening and closing mechanism realizes the separation of the mandrel and the universal coupling, thereby realizing the rapid replacement of the machined part, and the equipped fixing component has better connection stability.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a partial cross-sectional view of the locking mechanism of the present utility model;

FIG. 3 is a partial cross-sectional view of the synchronous telescoping assembly of the present utility model;

FIG. 4 is a partial cross-sectional view of the variable speed drive assembly of the present utility model;

FIG. 5 is a partial cross-sectional view of the rotary drive mechanism of the present utility model;

FIG. 6 is a partial cross-sectional view of the opening and closing mechanism of the present utility model;

in the drawing, a spindle 1, a locking mechanism 2, a locking pin 21, an elastic restoring member 22, a driving shaft 23, a driving block 24, a driving surface 25, a locking motor 26, a transmission gear 27, a planetary gear set 28, a universal coupling 3, a clamping frame 4, a rotation driving mechanism 5, a driving rod 51, a lifting base 52, a reversing gear set 53, a rotation motor 54, a clamping base 6, a fixing leg 61, a fixing hole 62, a receiving frame 63, a sliding screw 64, a lifting driving mechanism 7, a lifting groove 71, a lifting screw 72, an opening and closing mechanism 8, an opening and closing groove 81, an opening and closing bar 82, a fixing sliding sleeve 83 and a threaded connection 84.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description.

As shown in fig. 1, the gear grinding clamping tool comprises a mandrel 1 penetrating into a gear center hole, and a locking mechanism 2 which is attached to and tightly pressed with the inner side of the gear center hole is arranged in the mandrel 1. The two ends of the mandrel 1 are respectively connected with the clamping frame body 4 in a rotating way through the universal coupler 3, and a rotating driving mechanism 5 is arranged between the two ends of the mandrel 1, and the mandrel 1 is driven by the rotating driving mechanism 5 to adjust the circumferential angle in an inclined state. The lower end of the clamping frame body 4 is in sliding connection with the clamping base 6, a lifting driving mechanism 7 is arranged between the clamping base 6 and the clamping frame body 4, and when the lifting driving mechanism 7 drives the two ends of the mandrel 1 to be adjusted in height, the horizontal relative distance of the clamping frame body 4 is also adjusted adaptively. An opening and closing mechanism 8 is arranged between the mandrel 1 and the universal coupling 3, and after gear grinding is completed, the mandrel 1 and the universal coupling 3 are separated by the opening and closing mechanism 8, so that a machined part is replaced.

As shown in fig. 2, unlike the conventional clamping method, the locking mechanism 2 inside the mandrel 1 can adapt to the gear grinding requirements of different specifications. The locking mechanism 2 specifically comprises a locking pin 21 which is symmetrically arranged relative to the center of the mandrel 1, an elastic reset piece 22 is arranged between the locking pin 21 and the mandrel 1, and a synchronous telescopic assembly is arranged between the locking pin 21 and the mandrel 1. The synchronous telescopic assembly drives each locking pin 21 to synchronously eject out of the mandrel 1 and compress with the gear holes, and the synchronous telescopic assembly has good clamping stability for the gear holes with different apertures.

As shown in fig. 3, the synchronous telescopic assembly comprises a driving shaft 23 rotatably mounted inside the mandrel 1 and having central axes which are coincident, the driving shaft 23 has driving blocks 24 in one-to-one correspondence with the locking pins 21, the driving blocks 24 have driving surfaces 25 which abut against the locking pins 21, and when the driving shaft 23 rotates, the locking pins 21 eject the mandrel 1 under the guidance of the driving surfaces 25. The drive shaft 23 is in driving connection with a locking motor 26 via a variable speed transmission assembly. The drive shaft 23 is provided with a rotational drive force by a lock motor 26.

As shown in fig. 4, since a large clamping torque is required, the rotation torque of the drive shaft 23 is increased by using a variable speed transmission assembly including a transmission gear 27 fixed to the end of the spindle 1, the transmission gear 27 being drivingly connected to the locking motor 26 through a planetary gear set 28. The low speed high torque transmission requirement is met by the transfer gear 27 and the planetary gear set 28.

As shown in fig. 5, the rotation driving mechanism 5 is used for adjusting the circumferential angle of the mandrel 1, and is transmitted with torque by the universal coupling 3, and specifically comprises a driving rod 51 installed at the end of the universal coupling 3, a sliding chute is formed in the clamping frame 4, a lifting base 52 is installed in a vertically sliding manner, the driving rod 51 is rotationally connected with the lifting base 52, and a reversing gear set 53 and a rotation motor 54 are arranged between the inside of the lifting base 52 and the driving rod 51. The rotating motor 54 and the reversing gear set 53 drive the driving rod 51 and the universal coupling 3 to rotate at a constant speed, and the single rotation angle is controlled by the PLC unit.

In addition, since the mandrel 1 is installed between the clamping frames 4, when the mandrel 1 needs to adjust the inclination angle, the heights of both ends are independently adjusted. The lifting driving mechanism 7 is arranged in the lifting groove 71 which extends along the vertical direction in the clamping frame body 4, the lifting base 52 is slidably arranged in the lifting groove 71, and a lifting screw 72 is arranged between the lifting base 52 and the clamping frame body 4. The lifting screw 72 drives the lifting base 52 to slide up and down, and the motor is locked when the height is adjusted to a specified height.

As shown in fig. 6, after gear grinding is completed, the opening and closing mechanism 8 is separated, the locking mechanism 2 is unlocked and replaced by a workpiece, the opening and closing mechanism 8 comprises an opening and closing groove 81 arranged on the driving rod 51, an opening and closing strip 82 clamped with the opening and closing groove 81 is fixed at the end of the universal coupling 3, and a fixing assembly is arranged between the opening and closing groove 81 and the opening and closing strip 82. After the opening and closing bar 82 is clamped into the opening and closing groove 81, the fixing component is fixed in a sliding manner.

The fixing assembly comprises a fixing sliding sleeve 83 in sliding connection with the driving rod 51, the fixing sliding sleeve 83 is fixedly connected with the driving rod 51 and the end head of the universal coupling 3 in a sliding manner, and a threaded connection part 84 is arranged between the fixing sliding sleeve 83 and the end head of the universal coupling 3. When the fixed slide 83 is connected between the universal joint 3 and the drive rod 51, the fixed slide 83 is rotated until the screw connection 84 is connected and fixed.

Obviously, the clamping base 6 is integrally fixed on a corresponding workbench, the bottom of the clamping base 6 is provided with a fixing foot 61 which is attached and fixed with the table top, the fixing foot 61 is provided with a fixing hole 62, the upper end of the clamping base 6 is provided with a material receiving frame 63, and a sliding screw 64 is arranged between the clamping base 6 and the clamping frame body 4. The sliding screw rod 64 drives the clamping frame bodies 4 to be close to or far away from each other, and is synchronously adjusted with the lifting driving mechanism 7.

Preferably, the mandrel 1 is provided with an indication mark and a light sensor. When the gear is clamped on the mandrel 1, the indication mark and the optical sensor are utilized to ensure the positioning precision.

In summary, the principle of this embodiment is as follows: the end head of the mandrel 1 rotates relative to the clamping frame body 4 through the universal coupler 3 and the rotation driving mechanism 5, and the lifting driving mechanism 7 drives the two ends of the mandrel 1 to independently lift relative to the clamping frame body 4, so that the overall inclination angle of the mandrel 1 is adjusted, and the bevel gear grinding requirement is met.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as the spindle 1, the locking mechanism 2, the locking pin 21, the elastic restoring member 22, the driving shaft 23, the driving block 24, the driving surface 25, the locking motor 26, the transmission gear 27, the planetary gear set 28, the universal joint 3, the clamping frame body 4, the rotation driving mechanism 5, the driving lever 51, the elevating base 52, the reversing gear set 53, the rotation motor 54, the clamping base 6, the fixing leg 61, the fixing hole 62, the receiving frame 63, the sliding screw 64, the elevating driving mechanism 7, the elevating groove 71, the elevating screw 72, the opening and closing mechanism 8, the opening and closing groove 81, the opening and closing bar 82, the fixing sliding sleeve 83, the screw connection 84 are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides a gear grinding presss from both sides tight frock, includes dabber (1), dabber (1) inside be provided with locking mechanism (2), its characterized in that, dabber (1) both ends be provided with rotation actuating mechanism (5) respectively through universal joint (3) with press from both sides tight support body (4) rotation connection and between, press from both sides tight support body (4) lower extreme and press from both sides tight base (6) sliding connection, tight base (6) and press from both sides and be provided with lift actuating mechanism (7) between tight support body (4), dabber (1) and universal joint (3) between be provided with mechanism (8) that open and shut.

2. The gear grinding and clamping tool according to claim 1, wherein the locking mechanism (2) comprises locking pins (21) which are symmetrically arranged relative to the center of the mandrel (1), an elastic reset piece (22) is arranged between the locking pins (21) and the mandrel (1), and a synchronous telescopic assembly is arranged between the locking pins (21) and the mandrel (1).

3. A gear grinding and clamping tool according to claim 2, characterized in that the synchronous telescopic assembly comprises a driving shaft (23) rotatably mounted in the mandrel (1), the driving shaft (23) is provided with driving blocks (24) in one-to-one correspondence with the locking pins (21), the driving blocks (24) are provided with driving surfaces (25) abutted against the locking pins (21), and the driving shaft (23) is in transmission connection with the locking motor (26) through a variable speed transmission assembly.

4. A gear grinding and clamping tool according to claim 3, wherein the variable speed transmission assembly comprises a transmission gear (27) fixed at the tail end of the mandrel (1), and the transmission gear (27) is in transmission connection with the locking motor (26) through a planetary gear set (28).

5. The gear grinding and clamping tool according to claim 1, wherein the rotary driving mechanism (5) comprises a driving rod (51) arranged at the end of the universal coupler (3), a lifting base (52) is arranged in the clamping frame body (4) in a vertically sliding mode, the driving rod (51) is rotationally connected with the lifting base (52), and a reversing gear set (53) and a rotary motor (54) are arranged between the inside of the lifting base (52) and the driving rod (51).

6. The gear grinding and clamping tool according to claim 5, wherein the lifting driving mechanism (7) is arranged in the clamping frame body (4) and is provided with a lifting groove (71) extending in the vertical direction, the lifting base (52) is slidably arranged in the lifting groove (71), and a lifting screw (72) is arranged between the lifting base (52) and the clamping frame body (4).

7. The gear grinding and clamping tool according to claim 5, wherein the opening and closing mechanism (8) comprises an opening and closing groove (81) arranged on the driving rod (51), an opening and closing strip (82) clamped with the opening and closing groove (81) is fixed at the end of the universal coupling (3), and a fixing assembly is arranged between the opening and closing groove (81) and the opening and closing strip (82).

8. The gear grinding and clamping tool according to claim 7, wherein the fixing assembly comprises a fixing sliding sleeve (83) which is slidably connected with the driving rod (51), the fixing sliding sleeve (83) is slidably fixed with the driving rod (51) and the end head of the universal coupling (3), and a threaded connection part (84) is arranged between the fixing sliding sleeve (83) and the end head of the universal coupling (3).

9. The gear grinding and clamping tool according to claim 1, wherein a fixing foot (61) is arranged at the bottom of the clamping base (6), a fixing hole (62) is formed in the fixing foot (61), a material receiving frame (63) is arranged at the upper end of the clamping base (6), and a sliding screw (64) is arranged between the clamping base (6) and the clamping frame body (4).

10. The gear grinding clamping tool according to claim 1, wherein the spindle (1) is provided with an indication mark and a light sensor.