Servo drive rotary table

Abstract

The utility model relates to the technical field of servo rotary tables and discloses a servo drive rotary table, a first motor is arranged on the lower portion of a rotary table drive disc to form a direct drive structure, a second motor is matched with a drive screw to form an indirect drive structure, and a switching electric cylinder drives a sliding connecting base to achieve transmission combination control of the drive screw and the rotary table drive disc. The rotary table is of a double-motor driving structure, a first motor and a second motor are arranged at the bottom and on the side face of a rotary table driving disc respectively, the first motor is connected with the rotating shaft end of the rotary table driving disc to form a direct driving structure, and the second motor is connected with a driving tooth groove in the outer circumferential side of the rotary table driving disc through a driving screw to form a worm driving assembly. And the worm driving assembly adopts a sliding type connecting structure, and the joint state of the driving screw can be switched through the switching electric cylinder during working, so that the first motor and the second motor can separately drive the turntable driving disc in two modes, and the turntable can meet the use requirements of different scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of servo turntables, in particular to a servo driven turntable. Background Art

[0002] Turntables are often used on CNC machine tools. Turntables are workbenches for placing products to be processed. They can rotate around their rotation axis to any position and be fixed at that position. They are also called rotary tables. Servo turntables are a type of turntable. The servo turntable is driven by a servo motor. The controller adjusts the output signal according to feedback information to control and drive the servo motor, thereby achieving precise control of the turntable position.

[0003] Existing servo turntables are mainly divided into two drive structures: direct drive and indirect drive. The difference between the two drive structures lies in the difference in the speed range and load-bearing capacity of the turntable. Corresponding to different usage environments, traditional servo-driven turntables are mostly set up with a single drive structure. Only a single drive structure can be used as the drive structure of the turntable, which will limit the function of the turntable and cannot simultaneously meet the requirements of the turntable speed and load-bearing capacity. Utility Model Content

[0004] The purpose of the utility model is to provide a servo-driven turntable to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a servo-driven turntable, comprising a servo drive mechanism for driving a turntable drive disk, the servo drive mechanism comprising a first motor and a worm drive assembly, the first motor is arranged at the lower part of the turntable drive disk to form a direct drive structure, and the worm drive assembly is arranged on the side of the turntable drive disk;

[0006] The worm drive assembly includes a sliding connection seat, a second motor, a driving screw and a switching electric cylinder. The second motor cooperates with the driving screw to form an indirect drive structure. The second motor and the driving screw are both arranged on the upper part of the sliding connection seat. The sliding connection seat is movably arranged. The switching electric cylinder drives the sliding connection seat to realize the transmission combined control of the driving screw and the turntable drive disk.

[0007] Preferably, the top of the turntable driving disk is evenly provided with turntable connecting holes, the inside of the turntable connecting holes is provided with connecting bolts, and the turntable is fixed to the top of the turntable connecting holes by the connecting bolts.

[0008] Preferably, a driving shaft seat is fixedly connected to the middle part of the bottom side of the turntable driving disk, the rotating shaft end of the first motor is fixedly connected to the driving shaft seat, and the turntable driving disk is fixed to the rotating shaft end of the first motor through the driving shaft seat.

[0009] Preferably, the second motor is fixed to one side of the top of the sliding connection seat by bolts, a support shaft seat is fixed to the other side of the top of the sliding connection seat, the driving screw is rotatably arranged in the middle of the supporting shaft seat, the end of the driving screw is fixedly connected to the shaft end of the second motor, and a driving tooth groove is arranged on the circumferential side of the outer circle of the turntable driving disk, and the turntable driving disk is meshed with the spiral pattern on the upper part of the driving screw through the driving tooth groove.

[0010] Preferably, a sliding rail seat is provided at the bottom of the sliding connection seat, and the number of the sliding rail seats is two. The two sliding rail seats are fixed to the upper part of the equipment table at a fixed interval, and sliding grooves are opened on both sides of the bottom of the sliding connection seat. The sliding rail seat is slidably connected to the inner side of the sliding groove, and the sliding connection seat is slidably connected to the upper part of the sliding rail seat through the sliding groove, and a limited platform is fixed to the rear top of the two sliding rail seats.

[0011] Preferably, the switching electric cylinder is arranged on the front side of the sliding connection seat, the bottom of the switching electric cylinder is fixed to the upper part of the equipment table by bolts, and the push rod end of the switching electric cylinder is fixedly connected to the middle part of the front side of the sliding connection seat.

[0012] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0013] The servo-driven turntable adopts a dual-motor drive structure. A first motor and a second motor are respectively arranged at the bottom and the side of the turntable drive disk. The first motor is connected to the rotating shaft end of the turntable drive disk to form a direct drive structure. The second motor is connected to the driving tooth groove on the outer circumference side of the turntable drive disk through a driving screw to form a worm drive assembly, which can meet the direct drive and indirect drive of the turntable. The worm drive assembly adopts a sliding connection structure. When working, the engagement state of the driving screw can be switched by switching the electric cylinder, so that the first motor and the second motor can separately drive the turntable drive disk in two modes without interfering with each other, so that the turntable can meet the usage requirements of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall upper structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall lower structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the front structure of the worm drive assembly of the utility model;

[0019] Figure 5 It is a schematic diagram of the rear structure of the worm drive assembly of the utility model.

[0020] Explanation of the accompanying drawings: 1. Turntable drive disk; 2. First motor; 3. Worm drive assembly; 4. Sliding connection seat; 5. Second motor; 6. Driving screw; 7. Switching electric cylinder; 8. Support shaft seat; 9. Driving tooth groove; 10. Turntable connecting hole; 11. Sliding rail seat; 12. Limiting seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0023] Example

[0024] See also Figure 1-5 The utility model provides a technical solution: a servo-driven turntable, including a servo drive mechanism for driving a turntable drive disk 1, the servo drive mechanism including a first motor 2 and a worm drive assembly 3, turntable connecting holes 10 are evenly arranged on the top of the turntable drive disk 1, connecting bolts are arranged inside the turntable connecting holes 10, and the turntable is fixed to the top of the turntable connecting holes 10 by the connecting bolts.

[0025] A driving shaft seat is fixedly connected to the middle part of the bottom side of the turntable driving disk 1. The first motor 2 is a servo motor. The first motor 2 is arranged at the lower part of the turntable driving disk 1. The rotating shaft end of the first motor 2 is fixedly connected to the driving shaft seat. The turntable driving disk 1 is fixed to the rotating shaft end of the first motor 2 through the driving shaft seat to form a direct drive structure. The turntable driving disk 1 is directly driven by the first motor 2 to perform high-speed and low-load load-bearing operations.

[0026] The worm drive assembly 3 is arranged on the side of the turntable drive disk 1. The worm drive assembly 3 includes a sliding connection seat 4, a second motor 5, a driving screw 6 and a switching electric cylinder 7. The second motor 5 is a servo motor. The second motor 5 is fixed to one side of the top of the sliding connection seat 4 by bolts. A supporting shaft seat 8 is fixed to the other side of the top of the sliding connection seat 4. There are two supporting shaft seats 8. Support bearings are arranged in the middle of the two supporting shaft seats 8. The driving screw 6 is rotatably arranged between the two supporting shaft seats 8 through the support bearings. The end of the driving screw 6 is fixedly connected to the rotating shaft end of the second motor 5. A driving tooth groove 9 is arranged on the circumferential side of the outer circle of the turntable drive disk 1. The turntable drive disk 1 is meshed with the worm pattern on the upper part of the driving screw 6 through the driving tooth groove 9. The second motor 5 cooperates with the driving screw 6 to form an indirect drive structure. The second motor 5 indirectly drives the turntable drive disk 1 through the driving screw 6 to drive the turntable to rotate, and performs low-speed and high-load load-bearing operations.

[0027] The sliding connection seat 4 is movably arranged, and a sliding rail seat 11 is arranged at the bottom of the sliding connection seat 4. The sliding rail seat 11 is a T-shaped rail seat. There are two sliding rail seats 11, and the two sliding rail seats 11 are fixed to the upper part of the equipment table at a fixed interval. Sliding grooves are provided on both sides of the bottom of the sliding connection seat 4. The sliding rail seat 11 is slidably connected to the inner side of the sliding groove. The sliding connection seat 4 is slidably connected to the upper part of the sliding rail seat 11 through the sliding groove, and can perform a smooth horizontal sliding movement on the upper part of the sliding rail seat 11. A limited platform 12 is fixed to the top of the rear side of the two sliding rail seats 11, and a buffer is arranged on the front side of the limited platform 12. The punch pad can limit the sliding of the sliding connection seat 4 through the limit base 12, so that the driving screw 6 and the driving tooth groove 9 can be accurately meshed and connected; the driving screw 6 and the driving tooth groove 9 are matched and meshed with each other; when controlling the meshing connection between the driving screw 6 and the driving tooth groove 9, it is necessary to control the driving screw 6 to rotate slowly in the early stage to ensure that the surface thread of the driving screw 6 can smoothly mesh into the driving tooth groove 9, and the switching electric cylinder 7 is slowly pushed forward during docking to prevent mechanical damage caused by impact, thereby ensuring that the driving screw 6 and the driving tooth groove 9 are successfully matched and meshed with each other, and it is not easy to damage the surface of the driving screw 6 and the driving tooth groove 9.

[0028] The switching electric cylinder 7 is a servo electric cylinder. The switching electric cylinder 7 is arranged on the front side of the sliding connection seat 4. The bottom of the switching electric cylinder 7 is fixed to the upper part of the equipment table by bolts. The push rod end of the switching electric cylinder 7 is fixedly connected to the middle part of the front side of the sliding connection seat 4. The switching electric cylinder 7 drives the sliding connection seat 4 to realize the transmission combination control of the driving screw 6 and the turntable drive disk 1. When working, the switching electric cylinder 7 can switch the engagement state of the driving screw 6, so that the first motor 2 and the second motor 5 can drive the turntable drive disk 1 in two modes separately without interfering with each other. The first motor 2 and the second motor 5 are both non-locking brake motors, and the output shafts can rotate freely when they stop working.

[0029] Working principle or structural principle, when the turntable needs to perform high-speed and low-load operation, the push rod of the switching electric cylinder 7 is retracted, so that the driving screw 6 is separated from the driving tooth groove 9 on the outer side of the turntable driving disk 1, and the turntable driving disk 1 is directly driven by the first motor 2;

[0030] When the turntable needs to perform low-speed and high-load operations, the push rod of the switching electric cylinder 7 is extended, pushing the sliding connecting seat 4 to slide backward. When the sliding connecting seat 4 contacts the limit seat 12 at the rear of the sliding rail seat 11, the driving screw 6 engages with the driving tooth groove 9 on the upper part of the turntable driving disk 1, and the second motor 5 indirectly drives the turntable driving disk 1 through the driving screw 6 to drive the turntable to rotate.

[0031] In summary, the servo-driven turntable adopts a dual-motor drive structure, and a first motor 2 and a second motor 5 are respectively arranged at the bottom and the side of the turntable drive disk 1. The first motor 2 is connected to the shaft end of the turntable drive disk 1 to form a direct drive structure, and the second motor 5 is connected to the drive tooth groove 9 on the outer circumferential side of the turntable drive disk 1 through a drive screw 6 to form a worm drive assembly 3, which can meet the direct drive and indirect drive of the turntable, and the worm drive assembly 3 adopts a sliding connection structure. During operation, the engagement state of the drive screw 6 can be switched by switching the electric cylinder 7, so that the first motor 2 and the second motor 5 can respectively drive the turntable drive disk 1 in two modes without interfering with each other, so that the turntable can meet the usage requirements of different scenarios.

[0032] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0033] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A servo-driven turntable, comprising a servo drive mechanism for driving a turntable drive disk (1), characterized in that: The servo drive mechanism comprises a first motor (2) and a worm drive assembly (3), wherein the first motor (2) is arranged at the bottom of the turntable drive disk (1) to form a direct drive structure, and the worm drive assembly (3) is arranged on the side of the turntable drive disk (1); The worm drive assembly (3) comprises a sliding connection seat (4), a second motor (5), a driving screw (6) and a switching electric cylinder (7); the second motor (5) cooperates with the driving screw (6) to form an indirect drive structure; the second motor (5) and the driving screw (6) are both arranged on the upper part of the sliding connection seat (4); the sliding connection seat (4) is movably arranged; the switching electric cylinder (7) drives the sliding connection seat (4) to realize transmission combination control of the driving screw (6) and the turntable drive disk (1).

2. A servo-driven turntable according to claim 1, characterized in that: The top of the turntable driving disk (1) is evenly provided with turntable connecting holes (10), the inside of the turntable connecting holes (10) is provided with connecting bolts, and the top of the turntable connecting holes (10) is fixed with the turntable via the connecting bolts.

3. A servo-driven turntable according to claim 2, characterized in that: A drive shaft seat is fixedly connected to the middle part of the bottom side of the turntable drive disk (1), the rotating shaft end of the first motor (2) is fixedly connected to the drive shaft seat, and the turntable drive disk (1) is fixed to the rotating shaft end of the first motor (2) via the drive shaft seat.

4. The servo-driven turntable according to claim 1, characterized in that: The second motor (5) is fixed to one side of the top of the sliding connection seat (4) by bolts, and a support shaft seat (8) is fixed to the other side of the top of the sliding connection seat (4). The driving screw (6) is rotatably arranged in the middle of the support shaft seat (8), and the end of the driving screw (6) is fixedly connected to the rotating shaft end of the second motor (5). The outer circumferential side of the turntable driving disk (1) is provided with a driving tooth groove (9), and the turntable driving disk (1) is meshed with the spiral pattern on the upper part of the driving screw (6) through the driving tooth groove (9).

5. The servo-driven turntable according to claim 4, characterized in that: A sliding rail seat (11) is arranged at the bottom of the sliding connection seat (4), and the number of the sliding rail seats (11) is two. The two sliding rail seats (11) are fixed to the upper part of the equipment table at a fixed interval. Sliding grooves are provided on both sides of the bottom of the sliding connection seat (4). The sliding rail seat (11) is slidably connected to the inner side of the sliding groove. The sliding connection seat (4) is slidably connected to the upper part of the sliding rail seat (11) through the sliding groove. A limiting seat (12) is fixed to the top of the rear side of the two sliding rail seats (11).

6. The servo-driven turntable according to claim 5, characterized in that: The switching electric cylinder (7) is arranged on the front side of the sliding connection seat (4), the bottom of the switching electric cylinder (7) is fixed to the upper part of the equipment table by bolts, and the push rod end of the switching electric cylinder (7) is fixedly connected to the middle part of the front side of the sliding connection seat (4).

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