CN216555202U

CN216555202U - Transmission mechanism of high-precision rotary table

Info

Publication number: CN216555202U
Application number: CN202220052922.7U
Authority: CN
Inventors: 甘俊红; 石文祥; 闻河秀; 张强
Original assignee: Royal Precision Technology Co ltd
Current assignee: Royal Precision Technology Co ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-05-17
Anticipated expiration: 2032-01-10

Abstract

The utility model is suitable for the technical field of high-precision turntables, and provides a transmission mechanism of a high-precision turntable, which comprises: a base, a transmission disc rotatably arranged on the base, a transmission shaft rotatably arranged inside the base and engaged with the transmission disc, a driver, which is fixedly connected to the base, a transmission part which is fixedly connected to the output end of the driver, and a coupling component, the driver transmits the output kinetic energy to the transmission part through the output end of the driver, the transmission shaft fixedly connected with the transmission part through the coupling component receives the kinetic energy output by the output end of the driver, the transmission shaft rotates to drive the screw thread on the outer wall to synchronously rotate, because the transmission disc and the transmission shaft have a joint surface and a plurality of projections distributed circumferentially at the bottom of the transmission disc are engaged with the screw thread, it can drive a plurality of lugs through the mode of meshing and move to the drive transmission dish rotates.

Description

Transmission mechanism of high-precision rotary table

Technical Field

The utility model belongs to the technical field of high-precision turntables, and particularly relates to a transmission mechanism of a high-precision turntable.

Background

A numerical control machine tool often uses a turntable, which is a table for placing a product to be processed, and can rotate around a rotation shaft thereof to any position and be fixed at the position, and is also called a rotary table. Most of the traditional turntables adopt a worm and gear transmission mode to realize power transmission.

In the prior art, when the transmission mode is adopted, a meshing gap must be reserved between the worm and the gear, otherwise, seizure is easy to occur. However, after long-time use, abrasion inevitably occurs between the worm wheel and the worm, so that the service life of the worm wheel is reduced, and in the assembling process, the assembling precision of the worm is not ensured, so that the capacity of bearing torque is poor, and deflection is easy to generate, thereby seriously affecting the transmission precision and the transmission stability of the turntable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a transmission mechanism of a high-precision rotary table, and aims to solve the problems in the background technology.

The utility model is realized in this way, a transmission mechanism of a high-precision turntable, comprising: the base, the driving disk, its rotate set up in on the base, the transmission shaft, its rotatable set up in the inside of base, and with the meshing is connected between the driving disk, is used for the drive the driving disk rotates along its center, the driver, its rigid coupling in on the base, drive unit, its rigid coupling in on the output of driver, and, the shaft coupling subassembly, its both ends are connected respectively drive unit and the corresponding tip of transmission shaft, be used for with the kinetic energy transmission of driver output extremely on the transmission shaft.

Preferably, the transmission shaft includes: the transmission disc comprises a first connecting section and second connecting sections symmetrically and fixedly connected to two end parts of the first connecting section, wherein threads which are distributed spirally are arranged on the outer wall of the first connecting section in a surrounding mode, and a plurality of convex blocks meshed with the threads are distributed at the edge position of the bottom end face of the transmission disc at equal angles.

Preferably, the first connecting section and the second connecting sections on the two sides are integrally formed, and a guide part fixedly connected with the base is sleeved on the outer wall of each second connecting section.

Preferably, the guide member includes: and the top of the base is horizontally provided with a sleeve, a guide sleeve is accommodated in the sleeve, the second connecting section is arranged in the guide sleeve in a penetrating manner, the outer wall of the guide sleeve is attached to the inner wall of the sleeve, and the inner wall of the guide sleeve is attached to the outer wall of the second connecting section.

Preferably, the two end portions of each guide sleeve are integrally provided with annular protrusions protruding outwards, each annular protrusion is internally provided with a shaft sleeve in an embedded mode, and the second connecting section penetrates through the corresponding shaft sleeve and is rotatably connected with the inner peripheral wall of the shaft sleeve.

Preferably, the transmission member includes: the rigid coupling in connecting axle on the driver output, with the drive shaft that transmission shaft tip is connected through the coupling subassembly, cup joint on the outer wall of connecting axle and be fixed with the driving gear, just on the outer wall of drive shaft, it is fixed with driven gear to correspond the driving gear cup joints, the driving gear with intermeshing between the driven gear.

Preferably, the transmission member further includes: the sleeve joint is fixed in the drive shaft and the belt pulley on the connecting axle outer wall, two the belt pulley sets up relatively, and the transmission is provided with driving belt on the outer wall.

Preferably, the driver is one of a servo motor, a direct current motor and a stepping motor.

Preferably, the coupling assembly includes: the rigid coupling in accept the seat on the base, it rotates in and is provided with the shaft coupling spare, the shaft coupling spare includes: the bearing seat is characterized in that the bearing seat is rotatably connected with a first pipe body in the bearing seat, second pipe bodies are fixedly installed on two end portions of the first pipe body, two second pipe bodies are far away from the end face of the first pipe body, accommodating grooves extending towards the interior of the first pipe body are formed in the two second pipe bodies, and the corresponding end portions of the driving shaft and the corresponding end portions of the transmission shaft are fixedly connected in the corresponding accommodating grooves respectively.

Preferably, the drive shaft and the transmission shaft extend to correspond to the end parts in the accommodating grooves, limit blocks are fixedly connected to the end parts, and each accommodating groove is internally provided with a limit groove capable of accommodating the limit blocks, and the size of the limit groove is larger than that of the accommodating groove.

Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to a transmission mechanism of a high-precision turntable, which comprises the following components:

the driver transmits the kinetic energy of output to drive disk through its output, then, receive the kinetic energy of being exported by the driver output with the transmission shaft of drive disk through the coupling subassembly rigid coupling, and then, the transmission shaft takes place to rotate, and simultaneously, the screw thread on the drive disk outer wall carries out synchronous rotation, because there is the looks binding face between transmission dish and the transmission shaft, and the transmission dish bottom is the equal and screw thread between meshing of a plurality of lugs of circumference distribution, consequently, when the screw thread is rotatory, it can drive a plurality of lugs through the mode of meshing and move, thereby the drive disk rotates.

Because both ends at the transmission shaft all be provided with the guide part of rigid coupling between the base, consequently, when the transmission shaft at the pivoted in-process, the beat that its produced perhaps rocks and can transmit the guide part in, is spacing and fixed rotating the in-process to the transmission shaft by guide part to can effectually guarantee that the transmission shaft rotates along predetermined position, and then, guaranteed the stable meshing between transmission dish and the transmission shaft, prolonged the life of the two.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of a transmission member according to the present invention;

FIG. 3 is a schematic structural view of the coupling assembly of the present invention;

FIG. 4 is a schematic structural view of a propeller shaft according to the present invention;

FIG. 5 is a schematic view of the structure of the guide member of the present invention;

FIG. 6 is a bottom view of the drive plate of the present invention;

in the figure:

1. a base;

2. a drive plate; 21. a bump;

3. a drive shaft; 31. a first connection section; 32. a second connection section; 33. a thread;

4. a driver;

5. a transmission member; 51. a connecting shaft; 52. a drive shaft; 53. a driving gear; 54. a driven gear; 55. a belt pulley; 56. a drive belt;

6. a coupling assembly; 61. a bearing seat; 62. a coupling member; 621. a first pipe body; 622. a second tube body; 623. a containing groove; 624. a limiting block; 625. a limiting groove;

7. a guide member; 71. a base; 72. a sleeve; 73. a guide sleeve; 731. an annular projection; 732. and a shaft sleeve.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Referring to fig. 1 and 4-6, the present invention provides a technical solution:

a drive mechanism for a high-precision turntable, comprising: the device comprises a base 1, a transmission disc 2 and a transmission shaft 3, wherein the transmission disc 2 is rotatably arranged on the base 1, and the transmission shaft 3 is rotatably arranged in the base 1 and is meshed and connected with the transmission disc 2 to drive the transmission disc 2 to rotate along the center of the transmission disc;

the propeller shaft 3 includes: the first connecting section 31 and the second connecting sections 32 symmetrically fixed on the two ends of the first connecting section 31, the outer wall of the first connecting section 31 is provided with screw threads 33 which are distributed in a spiral shape in a surrounding way, and a plurality of lugs 21 which are meshed with the screw threads 33 are distributed at the edge position of the bottom end surface of the transmission disc 2 in an equal angle way;

the first connecting section 31 and the second connecting sections 32 on two sides are integrally formed, and the outer wall of each second connecting section 32 is sleeved with a guide part 7 fixedly connected with the base 1;

the guide member 7 includes: a base 71 fixedly connected with the base 1, wherein the top of the base is horizontally provided with a sleeve 72, a guide sleeve 73 is accommodated in the sleeve 72, and a second connecting section 32 is arranged in the guide sleeve 73 in a penetrating manner, wherein the outer wall of the guide sleeve 73 is attached to the inner wall of the sleeve 72, and the inner wall of the guide sleeve 73 is attached to the outer wall of the second connecting section 32;

each guide sleeve 73 has annular protrusions 731 protruding outward and integrally formed at both end portions, a bushing 732 is fitted into each annular protrusion 731, and the second connection section 32 penetrates the corresponding bushing 732 and is rotatably connected to the inner peripheral wall of the bushing 732.

It is specific, kinetic energy through 4 output of driver drives transmission shaft 3 and rotates, because be provided with screw thread 33 on the outer wall of transmission shaft 3, and simultaneously, when transmission shaft 3 is rotatory, screw thread 33 can be synchronous rotates, and then, the lug 21 that drives 2 bottoms of drive plate moves, and is specific, lug 21 can block and between two adjacent spiral lines of screw thread 33, when the displacement takes place for the spiral line, it can pull lug 21 and carry out the displacement motion, and then, continuity, drive plate 2 and rotate.

It should be noted that, when the transmission shaft 3 rotates, the inner wall of the shaft sleeve 732 disposed in the annular protrusion 731 on the guiding sleeve 73 can be clamped on the outer wall of the second connecting section 32, so as to limit the second connecting section 32 from deflecting and shaking during rotation, and limit it to rotate along a preset track, and meanwhile, the guiding sleeve 73 is disposed in the sleeve 72 in a transition fit manner, and the sleeve 72 is in a transition fit manner in the base 71, so that the transmission shaft 3 can be effectively guaranteed to move along the preset track through a triple limiting effect, and further, stable engagement between the transmission shaft 3 and the transmission disc 2 can be well guaranteed, and service lives of the two transmission shafts can be prolonged.

Referring to fig. 1, a driver 4 is fixed on the base 1, and the driver 4 is one of a servo motor, a dc motor, and a stepping motor.

Referring to fig. 1-3, a transmission unit 5 is fixed to the output end of the driver 4, the transmission unit 5 includes: a connecting shaft 51 fixedly connected to the output end of the driver 4, and a driving shaft 52 connected to one end of the transmission shaft 3 through a coupling assembly 6, wherein a driving gear 53 is fixedly sleeved on the outer wall of the connecting shaft 51, a driven gear 54 is fixedly sleeved on the outer wall of the driving shaft 52 corresponding to the driving gear 53, and the driving gear 53 and the driven gear 54 are engaged with each other;

the transmission member 5 further includes: the belt pulleys 55 are sleeved and fixed on the outer walls of the driving shaft 52 and the connecting shaft 51, the two belt pulleys 55 are oppositely arranged, and a driving belt 56 is arranged on the outer wall in a driving mode.

Specifically, after driver 4 switches on external power supply, its output is rotatory, and then, with rotatory kinetic energy transmission to connecting axle 51 on, then, cup joint fixed driving gear 53 on the connecting axle 51 outer wall and can drive driven gear 54 on the drive shaft 52 outer wall and rotate, and then, drive shaft 52 and rotate, utilize the coupling subassembly 6 of rigid coupling on the drive shaft 52 tip to drive transmission shaft 3 and rotate, and then, drive transmission dish 2 rotates.

It should be noted that, furthermore, on the connecting shaft 51 and the driving shaft 52, the belt pulley 55 located on one side of the driving gear 53 and the driven gear 54 is further respectively sleeved, the two belt pulleys 55 are sleeved with the transmission belt 56 capable of moving in a transmission manner, when the connecting shaft 51 rotates, the belt pulley 55 on the outer wall of the connecting shaft can drive the transmission belt 56 to move, and then the belt pulley 55 on the driving shaft 52 drives the driving shaft 52 to rotate, and through a dual transmission manner, the transmission stability is improved, and further, the stable driving transmission shaft 3 driven by the kinetic energy output by the driver 4 can be effectively ensured to rotate.

Referring to fig. 2 and 3, a coupling assembly 6 having two ends respectively connected to the transmission member 5 and the corresponding end of the transmission shaft 3 for transmitting the kinetic energy output from the driver 4 to the transmission shaft 3;

the coupling assembly 6 includes: the bearing seat 61 fixed on the base 1 is provided with a coupling part 62 in a rotating way, and the coupling part 62 comprises: the first pipe 621 rotatably connected in the bearing seat 61, two ends of the first pipe 621 are fixedly provided with second pipe 622, two end faces of the second pipe 622 away from the first pipe 621 are respectively provided with a containing groove 623 extending towards the inside thereof, wherein the driving shaft 52 and corresponding end portions of the driving shaft 3 are respectively and fixedly connected in the corresponding containing grooves 623;

the driving shaft 52 and the transmission shaft 3 extend to the end portions corresponding to the accommodating grooves 623, each of the driving shaft and the transmission shaft is fixedly connected with a limiting block 624, each of the accommodating grooves 623 is further provided with a limiting groove 625 capable of accommodating the corresponding limiting block 624, and the size of the limiting groove 625 is larger than that of the accommodating groove 623.

Specifically, the coupling assembly 6 includes: two second bodys 622 that set up relatively, between two second bodys 622, fixed mounting has first body 621, the rotatory setting of first body 621 is in accepting seat 61, and all be provided with holding drive shaft 52 in two second bodys 622, the storage tank 623 of the 3 corresponding tip of transmission shaft, preferably, drive shaft 52, the 3 corresponding tip of transmission shaft adopts the welding, the joint, mode erection fixation such as spiro union is in storage tank 623, thereby increase drive shaft 52, the 3 corresponding tip of transmission shaft and the friction between the storage tank 623, and then, the effectual stability of guaranteeing the kinetic energy transmission.

It should be noted that, preferably, the limiting groove 625 and the limiting block 624 are arranged to stably ensure that the corresponding end portions of the driving shaft 52 and the transmission shaft 3 cannot be disengaged from the accommodating groove 623, and further, to provide a guarantee for stable transmission of subsequent kinetic energy.

The working principle and the using process of the utility model are as follows: after the utility model is installed:

on the connecting axle 51 is transmitted to the kinetic energy of 4 output of driver, then, the driving gear 53 drives driven gear 54 on the drive shaft 52 and rotates (simultaneously, two belt pulleys 55 further guarantee the transmission of kinetic energy through driving belt 56), drive shaft 52 transmits rotatory kinetic energy to in the coupling 62, coupling 62 drives transmission shaft 3 and rotates, screw 33 on the outer wall of transmission shaft 3 drives lug 21 bottom the transmission dish 2 and carries out rotary motion, thereby drive transmission dish 2 rotates.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A transmission mechanism of a high-precision rotary table is characterized by comprising:

a base (1);

the transmission disc (2) is rotatably arranged on the base (1);

the transmission shaft (3) is rotatably arranged in the base (1) and is in meshed connection with the transmission disc (2) so as to drive the transmission disc (2) to rotate along the center of the transmission disc;

a driver (4) which is fixedly connected to the base (1);

a transmission component (5) which is fixedly connected to the output end of the driver (4);

and the two ends of the coupling assembly (6) are respectively connected with the transmission part (5) and the corresponding end part of the transmission shaft (3) and used for transmitting the kinetic energy output by the driver (4) to the transmission shaft (3).

2. A high-precision turret transmission mechanism according to claim 1, characterized in that said transmission shaft (3) comprises:

a first connecting section (31) and a second connecting section (32) symmetrically fixed on two ends of the first connecting section;

the outer wall of the first connecting section (31) is provided with screw threads (33) which are distributed spirally;

a plurality of lugs (21) meshed with the threads (33) are distributed at the edge of the bottom end surface of the transmission disc (2) in an equal angle.

3. A transmission mechanism of a high precision rotary table according to claim 2, wherein said first connecting section (31) and said second connecting sections (32) at both sides are integrally formed;

and a guide part (7) fixedly connected with the base (1) is sleeved on the outer wall of each second connecting section (32).

4. A high-precision turret transmission according to claim 3, characterized in that said guide means (7) comprise:

a base (71) fixedly connected with the base (1), wherein the top of the base is horizontally provided with a sleeve (72);

the guide sleeve (73) is accommodated in the sleeve (72);

the second connecting section (32) is arranged in the guide sleeve (73) in a penetrating way;

the outer wall of the guide sleeve (73) is attached to the inner wall of the sleeve (72), and the inner wall of the guide sleeve (73) is attached to the outer wall of the second connecting section (32).

5. The transmission mechanism of a high-precision rotary table as claimed in claim 4, wherein two end positions of each guide sleeve (73) are integrally provided with annular protrusions (731) protruding outwards, and each annular protrusion (731) is internally provided with a shaft sleeve (732) in an embedded manner;

the second connecting section (32) penetrates through the corresponding shaft sleeve (732) and is rotatably connected with the inner peripheral wall of the shaft sleeve (732).

6. A high-precision turret transmission mechanism according to claim 1, characterized in that said transmission means (5) comprise:

a connecting shaft (51) fixedly connected to the output end of the driver (4);

a driving shaft (52) connected with one end part of the transmission shaft (3) through a coupling component (6);

a driving gear (53) is fixedly sleeved on the outer wall of the connecting shaft (51), and a driven gear (54) is fixedly sleeved on the outer wall of the driving shaft (52) corresponding to the driving gear (53);

the driving gear (53) and the driven gear (54) are meshed with each other.

7. A high-precision turret transmission mechanism according to claim 6, characterized in that said transmission member (5) further comprises:

a belt pulley (55) sleeved and fixed on the outer walls of the driving shaft (52) and the connecting shaft (51);

the two belt pulleys (55) are oppositely arranged, and a transmission belt (56) is arranged on the outer wall in a transmission mode.

8. A high-precision turntable driving mechanism as claimed in claim 6, characterized in that said driver (4) is one of a servo motor, a DC motor, a stepping motor.

9. A high-precision turret transmission according to claim 6, characterized in that said coupling assembly (6) comprises:

a bearing seat (61) fixedly connected to the base (1), wherein a coupling part (62) is rotatably arranged in the bearing seat;

the coupling (62) includes:

a first pipe body (621) rotatably connected in the bearing seat (61), and second pipe bodies (622) are fixedly arranged on two end parts of the first pipe body;

the end faces, far away from the first pipe body (621), of the two second pipe bodies (622) are provided with accommodating grooves (623) extending towards the insides of the two second pipe bodies;

the driving shaft (52) and the corresponding end part of the transmission shaft (3) are respectively and fixedly connected in the corresponding accommodating groove (623).

10. The transmission mechanism of a high-precision rotary table according to claim 9, wherein the driving shaft (52) and the transmission shaft (3) extend to the end corresponding to the inside of the containing groove (623), and are fixedly connected with a limit block (624);

in addition, a limiting groove (625) capable of containing the corresponding limiting block (624) is formed in each containing groove (623);

the size of the limiting groove (625) is larger than that of the accommodating groove (623).