Double-workbench rotary drive mechanism

Abstract

The present invention belongs to the field of mechanical equipment and relates to a double-workbench rotary drive mechanism which is arranged on the turntable of a machine tool. It includes a connecting seat that is matched and installed with the turntable and a support frame that is fixedly installed with the machine tool. A lower drive disk, an intermediate disk, and an upper drive disk are sequentially arranged in cooperation at one end of the connecting seat far from the turntable; a cycloidal speed reducer is fixedly connected to one end of the upper drive disk far from the intermediate disk through a fastener, a servo motor is matched and connected to one end of the cycloidal speed reducer far from the upper drive disk, and a motor adapter plate is also matched and arranged between the cycloidal speed reducer and the servo motor. The motor adapter plate is fixed on the support frame; the structure of the present invention is simple, the installation and adjustment are convenient, and the transmission accuracy is high, and the stability and reliability are also very good.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical equipment and relates to a double-workbench rotary drive mechanism. Background Art

[0002] Currently, most machine tools on the market use a single workbench, such as ordinary gear grinding machines, hobbing machines, etc. Since during the machining process, actions such as clamping and tool setting are required for each workpiece before machining, the auxiliary time is relatively long, and it can no longer fully meet the high-efficiency requirements of users for machining machine tools. The double-workbench machine tool can install and gear the workpiece at another workbench while machining at one workbench. After the previous workpiece is machined, only by rotating and changing positions can the next workpiece be machined, which greatly reduces the auxiliary time and improves the production efficiency. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a double-workbench rotary drive mechanism for realizing the rotary drive of the double-workbench machine tool during position change, and achieving the key technical purposes of fast and stable rotation and consistent accuracy during machining.

[0004] To achieve the above object, the present invention provides the following technical solution: The double-workbench rotary drive mechanism is arranged on the turntable of the machine tool and includes a connecting seat that is matched and installed with the turntable and a support frame that is fixedly installed with the machine tool. A lower drive disk, an intermediate disk, and an upper drive disk are sequentially and cooperatively arranged at one end of the connecting seat away from the turntable.

[0005] A cycloidal speed reducer is fixedly connected to one end of the upper drive disk away from the intermediate disk through a fastener. A servo motor is matched and connected to one end of the cycloidal speed reducer away from the upper drive disk. An electric motor adapter plate is also matched and arranged between the cycloidal speed reducer and the servo motor, and the electric motor adapter plate is fixed on the support frame.

[0006] Optionally, a plurality of claw teeth are respectively arranged on the upper drive disk and the lower drive disk, and a cross groove that is matched with the claw teeth is arranged on the intermediate disk.

[0007] Optionally, the claw teeth of the upper drive disk and the claw teeth of the lower drive disk are relatively staggered, the size of the claw teeth is matched with the cross groove, and the claw teeth are all inserted into the cross groove.

[0008] Optionally, staggered limit bosses are respectively arranged on the opposite end faces of the upper drive disk and the lower drive disk to ensure that the claw teeth will not be stuck with the cross groove and will not disengage from the cross groove.

[0009] Optionally, a plurality of bolt-type eccentric rollers are also matched and arranged on the support frame at a position close to the lower drive disk, and the bolt-type eccentric rollers are fixed by thin nuts.

[0010] Optionally, the eccentric rollers are evenly distributed on the outer circumference of the lower driving disk and are in contact with the outer circular surface of the lower driving disk.

[0011] Optionally, the servo motor is installed on the motor adapter plate, and a key is also provided at one end thereof close to the cycloidal speed reducer. The servo motor is connected to the end of the cycloidal speed reducer through this key.

[0012] Optionally, both ends of the support frame are fixedly connected to the machine tool through a plurality of screws, and a washer and a threaded sleeve are also arranged in a matching manner at each connection for adjusting the level of the support frame.

[0013] The beneficial effects of the present invention are as follows:

[0014] For the double-workbench rotary drive mechanism of the present invention, the upper and lower driving disks and the intermediate connecting disk are relied on to transmit torque. The upper and lower driving disks are matched with the cross grooves of the intermediate disk through claw teeth. Even if the motor shaft is not concentric with the lower turntable, it can still meet the assembly and use requirements; in addition, the level and verticality when the turntable floats can be adjusted through the threaded sleeve and the bolt-type roller installed on the support frame, ensuring the flexibility and stability when the turntable is lifted and rotated.

[0015] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent description, and to some extent, they will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following description. Brief Description of the Drawings

[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0017] Figure 1 is the overall front view of the double-workbench rotary drive mechanism of the present invention;

[0018] Figure 2 is the Figure 1 enlarged view of B in the double-workbench rotary drive mechanism of the present invention;

[0019] Figure 3 is the Figure 1 view of removing the support frame along A-A in the double-workbench rotary drive mechanism of the present invention;

[0020] Figure 4 is the axonometric view of the double-workbench rotary drive mechanism of the present invention;

[0021] Figure 5 is the partial structural schematic diagram of the double-workbench rotary drive mechanism of the present invention.

[0022] Reference numerals: servo motor 1, motor adapter plate 2, cycloidal speed reducer 3, support frame 4, upper drive disk 5, intermediate disk 6, lower drive disk 7, connecting seat 8, screw 9, washer 10, threaded sleeve 11, bolt-type eccentric roller 12, thin nut 13, turntable 14, claw teeth 15, cross slot 16, limit boss 17. Detailed implementation manners

[0023] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0024] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation to the present invention; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Please refer to Figures 1 to 4, which is a double-workbench rotary drive mechanism, is arranged on the turntable 14 of the machine tool. It includes a connecting seat 8 that is matched and installed with the turntable 14 and a support frame 4 that is fixedly installed with the machine tool. At one end of the connecting seat 8 away from the turntable 14, a lower drive disk 7, an intermediate disk 6, and an upper drive disk 5 are sequentially arranged in cooperation; at one end of the upper drive disk 5 away from the intermediate disk 6, a cycloidal reducer 3 is fixedly connected through a fastener. At one end of the cycloidal reducer 3 away from the upper drive disk 5, a servo motor 1 is matched and connected. An electric motor adapter plate 2 is also matched and arranged between the cycloidal reducer 3 and the servo motor 1. The electric motor adapter plate 2 is fixed on the support frame 4, and the servo motor 1 is installed on the electric motor adapter plate 2. A key is also arranged at one end of the servo motor 1 close to the cycloidal reducer 3. The servo motor 1 is connected to the end of the cycloidal reducer 3 through this key.

[0027] In this embodiment, a number of claw teeth 15 are respectively arranged on the upper drive disk 5 and the lower drive disk 7, and a cross groove 16 that matches the claw teeth 15 is arranged on the intermediate disk 6. The claw teeth 15 of the upper drive disk 5 and the claw teeth 15 of the lower drive disk 7 are arranged relatively staggeredly and are both inserted into the cross groove 16. Through a reasonable clearance fit design of the claw teeth 15 of the upper and lower drive disks and the cross groove 16 of the intermediate disk 6, the lifting movement of the turntable can be adapted. The design of the cross groove 16 can adapt to the problem of non-concentric upper and lower axes, which is convenient for installation.

[0028] In this embodiment, limiting convex platforms 17 are arranged on the upper and lower drive disks, which can ensure that the claw teeth 15 will not be stuck with the cross groove 16 nor break away from the cross groove 16; after the entire drive mechanism is assembled and adjusted, ensuring that the intermediate disk 6 is flexible up and down, there will be no lateral force when the turntable 14 rotates, ensuring reliability and stability.

[0029] In this embodiment, 4 bolt-type eccentric rollers 12 are also matched and arranged on the support frame 4 at a position close to the lower drive disk 7. The bolt-type eccentric rollers 12 are fixed by thin nuts 13. The 4 eccentric rollers are evenly distributed on the outer circumference of the lower drive disk 7. The eccentric rollers can be conveniently adjusted and are in contact with the outer circular surface of the lower drive disk 7, playing a role in radial positioning and not affecting the rotation and lifting movement of the turntable, making the turntable 14 stable during rotation and not skewing.

[0030] In this embodiment, both ends of the support frame 4 are fixedly connected to the machine tool through a number of screws 9, and a washer 10 and a threaded sleeve 11 are also matched and arranged at each connection for adjusting the level of the support frame 4.

[0031] When the invention needs to change positions, the floating positioning structure at the bottom of the turntable 14 lifts the entire turntable 14, separating the upper and lower end tooth disks. The servo motor 1 of the rotary drive mechanism then drives the turntable 14 to rotate through transmission. The two workbenches on the turntable 14 complete the position change, and then the floating positioning structure resets, and the position change is completed.

[0032] The rotary drive structure of the present invention mainly relies on the upper and lower drive disks and the intermediate connecting disk to transmit torque. The upper and lower drive disks are matched with the cross grooves 16 of the intermediate disk 6 through the claw teeth 15, which can meet the assembly and use requirements even if the motor shaft is not concentric with the lower turntable 14. At the same time, the horizontal and verticality of the turntable 14 when it floats are adjusted by the threaded sleeve 11 and the bolt-type roller installed on the support frame 4, ensuring the flexibility and stability of the turntable 14 during lifting and rotation. The structure of the present invention is simple, convenient for installation and adjustment, with high transmission accuracy, and excellent stability and reliability.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A double-workbench rotary drive mechanism is arranged on the turntable of a machine tool, and is characterized in that: It includes a connecting seat matched with the turntable and a supporting frame fixedly installed with the machine tool, and the connecting seat is sequentially provided with a lower driving disk, an intermediate disk and an upper driving disk on one end away from the turntable; The end of the upper driving disk away from the middle disk is fixedly connected to a cycloid reducer through a fastener, and the end of the cycloid reducer away from the upper driving disk is matched with a servo motor, and a motor receiving plate is matched between the cycloid reducer and the servo motor, and the motor receiving plate is fixed on the support frame; a plurality of claws are respectively arranged on the upper driving disk and the lower driving disk, and a cross groove matching the claws is arranged on the middle disk; the claws of the upper driving disk and the claws of the lower driving disk are relatively staggered, the size of the claws matches the cross groove, and the claws are all inserted into the cross groove; the upper driving disk and the lower driving disk are respectively provided with staggered limit convex protrusions on the opposite end faces The platform ensures that the claw teeth will not get stuck in the cross slot or disengage from the cross slot; a plurality of bolt-type eccentric rollers are matched and arranged on the support frame near the lower driving disk, and the bolt-type eccentric rollers are fixed with thin nuts; the eccentric rollers are matched and evenly distributed on the outer circumference of the lower driving disk and are in contact with the outer circumferential surface of the lower driving disk; the servo motor is installed on the motor receiving disk, and a key is also arranged at one end of the motor near the cycloid reducer, through which the servo motor is connected to the end of the cycloid reducer; the two ends of the support frame are fixedly connected to the machine tool by a plurality of screws, and each connection is matched and installed with a washer and a threaded sleeve for adjusting the level of the support frame.

Images