CN113146277A

CN113146277A - Rotary workbench

Info

Publication number: CN113146277A
Application number: CN202110358246.6A
Authority: CN
Inventors: 姜岸委; 刘利文; 肖勇; 刘三勇; 毛勇
Original assignee: Changsha Chaint Robotics Co Ltd
Current assignee: Changsha Chaint Robotics Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-07-23

Abstract

The invention relates to a rotary worktable which comprises a worktable main body, a controller, a positioning assembly and a clamping and fixing assembly, wherein the worktable main body comprises a fixed part and a rotating part, the rotating part comprises a rotating frame, the rotating frame is arranged on the fixed part and is connected with a supporting shaft, the rotating frame is provided with a worktable surface, the rotary worktable is provided with an angle sensor, the controller is used for receiving a detection signal of the angle sensor and controlling the starting, the stopping and the contracting brake of a rotating motor, the positioning assembly comprises a positioning telescopic part arranged on a base and a positioning part arranged at the bottom of the rotating frame, when the rotating frame rotates to a preset position, the positioning telescopic part extends to abut against or clamp the positioning part, and the clamping and fixing assembly is arranged on the base. The invention has simple integral structure, can meet the positioning precision requirement while increasing the working position and improving the production rhythm, and ensures that the workbench runs stably and reliably for a long time and has low maintenance rate.

Description

Rotary workbench

Technical Field

The invention belongs to the technical field of workpiece processing, and particularly relates to a rotary workbench.

Background

Machining is short for machining and refers to a machining process for removing materials through mechanical precision machining. The mechanical processing mainly comprises two types of manual processing and numerical control processing. At present, most machining workshops adopt numerical control machining technology, a CNC controller of a numerical control machine controls shafts of the numerical control machine through recognizing and interpreting program languages, and materials are automatically removed according to requirements, so that a finished workpiece is obtained. Numerical control machining processes workpieces in a continuous manner, is suitable for large batches of parts with complex shapes, and needs to be applied to a workbench in the machining process.

At present, the station utilization rate of a rotary workbench is low, clamping and machining cannot be carried out simultaneously, and the rotary workbench directly clamps and machines workpieces, so that the types of the machined workpieces of the rotary workbench are limited, and the applicability is not strong; the positioning accuracy of the rotary worktable is not high enough, the size of a processed workpiece is overlarge, the whole weight is overweight, the stability in processing and the positioning accuracy in the processing process cannot be guaranteed to change, the rotary table does not have a lubricating system, the abnormal movement sound can be generated after the rotary table works for a long time, the rotation is not smooth, the positioning accuracy does not meet the requirement, the rotary table rotates too much, the error accumulation of the rotation angle can be caused, and the operation of maintaining or installing the rotary worktable is complicated.

In summary, it is desirable to provide a rotary worktable capable of increasing the production tact of the stations and satisfying the requirement of positioning accuracy, and ensuring stable and reliable long-term operation of the worktable and low maintenance rate.

Disclosure of Invention

The invention aims to provide a rotary workbench which can increase the production rhythm of stations and promote the production rhythm, can meet the requirement of positioning precision, and ensures the long-term stable and reliable operation of the workbench and low maintenance rate.

The above purpose is realized by the following technical scheme: a rotary worktable comprises a worktable main body, a controller, a positioning assembly and a clamping and fixing assembly, wherein the worktable main body comprises a fixing part and a rotating part, the fixing part comprises a base, a rotary motor and a supporting shaft, the supporting shaft is rotatably connected to the base, the output end of the rotary motor is in transmission connection with the supporting shaft and can drive the supporting shaft to rotate, the rotating part comprises a rotating frame, the rotating frame is arranged on the fixing part and is connected with the supporting shaft, the rotating frame is provided with a worktable surface, the rotary worktable is provided with an angle sensor for detecting the rotating angle of the rotating frame, the angle sensor is in communication connection with the controller, the rotary motor is electrically connected with the controller, the controller is used for receiving the detection signal of the angle sensor and controlling the starting, stopping and brake of the rotary motor, the positioning assembly comprises a positioning telescopic piece arranged on the base and a positioning piece arranged at the bottom of the rotating frame, when the rotating frame rotates to a preset position, the positioning telescopic piece extends to abut against or block the positioning piece, and the clamping fixing assembly is arranged on the base and used for clamping and fixing the rotating frame.

The rotating table is used for fixing and positioning a workpiece during machining, the workpiece flows on the rotating table during machining, in a specific application process, the workpiece is clamped by a workpiece clamping tool, after corresponding operation is carried out on a first station, the workpiece needs to flow to the next station, the controller controls the rotating motor to start and drive the rotating part to rotate, the angle sensor detects the rotating angle of the rotating frame and transmits the rotating angle to the controller, the controller compares a received angle signal with a preset angle value, and when the received angle signal reaches a preset angle, the controller controls the rotating motor to stop and carry out contracting brake, so that the rotating part cannot rotate relative to the fixed part; then controlling the positioning telescopic part to extend, and determining whether the movable end of the positioning telescopic part can be matched with the positioning part or not, if not, releasing the band-type brake of the rotating motor by the controller, rotating the rotating part to finely adjust the rotating part, so that the movable end of the positioning telescopic part can be matched with the positioning column, and when the movable end of the positioning telescopic part can be matched with the positioning part and can abut against or clamp the positioning part, controlling the band-type brake of the rotating motor again by the controller, clamping and fixing the rotating part by the clamping and fixing component, and fixing the rotating workbench; and then, carrying out corresponding operation on the workpiece on the station, repeating the operation, and after the workpiece which is firstly processed is circulated on the rotary worktable, loosening the workpiece by the workpiece clamping tool to take the workpiece, then re-assembling the workpiece and repeating the steps.

The further technical scheme is that a fixing plate is arranged at the bottom of the rotating frame, the clamping and fixing assembly comprises a clamping cylinder, a fixed end of the clamping cylinder is fixed on the base, and a movable end can extend at a preset position to abut against the fixing plate and fix the rotating part. So set up, the fixed plate cooperatees with die clamping cylinder and realizes the fixed of rotating part for the swivel work head is in fixed position, prevents that the relative fixed part of course of working work piece from removing, guarantees to add the stability man-hour. The fixation plate is preferably L-shaped.

The further technical scheme is that the rotary workbench comprises a limiting assembly, the limiting assembly comprises a limiting support arranged on the rotary frame and at least two limiting stops arranged on the base, the connecting line of the two limiting stops passes through the axis of the supporting shaft, and the limiting stops are used for blocking the limiting support and further limiting the rotation range of the rotary frame. So set up, during the duplex position, the direction of rotation of swivel work head rotating part is for making a round trip 180 rotations, and swivel work head itself can the self-adaptation eliminate the error like this to accumulated precision error when can reducing the rotation.

The technical scheme is that the positioning part comprises at least two positioning columns, connecting lines of the two positioning columns pass through the rotating center of the rotating frame, the positioning telescopic part is a positioning cylinder, the fixed end of the positioning cylinder is fixed on the base, and when the rotating frame rotates to a preset position, the fixed end of the positioning cylinder extends to abut against or block the positioning columns.

The further technical scheme is that the output end of the rotating motor is provided with a driving gear, the supporting shaft is provided with a transmission gear, the driving gear is meshed with the transmission gear, and the diameter of the driving gear is smaller than that of the transmission gear.

The further technical scheme is that the rotary workbench is provided with a lubricating oil pipeline system used for lubricating the internal ball of the supporting shaft and the meshing position of the driving gear and the transmission gear. Therefore, the lubricating oil pipeline system lubricates the rotating part of the supporting shaft, and the stability of rotation is enhanced.

The further technical scheme is that a clapboard for isolating processing dust is arranged on the rotary working table surface. So set up, the dust that work piece processing can be completely cut off with rotary part into a plurality of stations to the baffle.

The further technical scheme is that the positioning cylinder and the clamping cylinder are electrically connected with the controller, and the controller can control the stretching and the starting and the stopping of the positioning cylinder and the clamping cylinder. So set up, above-mentioned structure all controls through the controller, can realize the automation and the intellectuality of work piece processing engineering.

The further technical scheme is that the rotating frame is provided with a plurality of positioning pin holes used for being matched with the positioning pins to install the workpiece clamping tool. According to the arrangement, the clamping tools for the different workpieces can be installed through the positioning pins, the workpieces of different types can be machined, the clamping tools for the other workpieces can be replaced, and the adaptability of the rotary workbench is improved.

The further technical scheme is that an installation station for installing the workpiece clamping tool is reserved on the fixing part.

Compared with the prior art, the invention has the beneficial effects that: the invention adopts a plurality of stations, different workpiece clamping tools can be simultaneously installed to increase the applicability of the rotary workbench, and the precision of the rotating angle and the maintenance of the precision in the machining process are ensured by the positioning assembly and the clamping and fixing assembly; in addition, the automatic integrated control is realized by the controller and the like for rotation, positioning and clamping, the rotation direction of the rotary worktable is back and forth 180 degrees, and the rotary worktable can self-adaptively eliminate errors; the invention has simple integral structure, can meet the positioning precision requirement while increasing the working position and improving the production rhythm, and ensures that the workbench runs stably and reliably for a long time and has low maintenance rate.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural view of a rotary table according to an embodiment of the present invention;

FIG. 2 is a front view of a rotary table according to one embodiment of the present invention;

fig. 3 is a schematic structural view of a rotary part according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a fixing portion according to an embodiment of the present invention.

In the figure:

1 rotating part 2 fixed part 3 positioning telescopic part 4 clamping cylinder

5 lubricating oil pipeline system 6 baffle 7 swivel mount 8 rotating electrical machines

9 locating piece 10, fixing plate 11, limit support 12 and limit stop

13 base 14 support shaft 15 angle sensor 16 driving gear

17 drive gear

Detailed Description

The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.

In the following embodiments of the present invention, referring to fig. 1 to 4, a rotary table includes a table body, a controller, a positioning assembly and a clamping and fixing assembly, the table body includes a fixing portion 2 and a rotating portion 1, the fixing portion 2 includes a base 13, a rotary motor 8 and a supporting shaft 14, the supporting shaft 14 is rotatably connected to the base 13, an output end of the rotary motor 8 is in transmission connection with the supporting shaft 14 and can drive the supporting shaft 14 to rotate, the rotating portion 1 includes a rotating frame 7, the rotating frame 7 is disposed on the fixing portion 2 and connected to the supporting shaft 14, the rotating frame 7 is provided with a table top, the rotary table is provided with an angle sensor 15 for detecting a rotation angle of the rotating frame 7, the angle sensor 15 is in communication connection with the controller, the rotary motor 8 is electrically connected to the controller, the controller is used for receiving angle sensor 15's detected signal and control rotating electrical machines 8 open and stop and band-type brake, positioning assembly is including setting up location extensible member 3 on base 13 and setting up are in the setting element 9 of swivel mount 7 bottom, when swivel mount 7 is rotatory to preset position the extension of location extensible member 3 can support or block setting element 9, it sets up to press from both sides tight fixed subassembly and be used for pressing from both sides tight fixed swivel mount 7 on the base 13.

The rotating table is used for fixing and positioning a workpiece during machining, the workpiece flows on the rotating table during machining, in a specific application process, the workpiece is clamped by a workpiece clamping tool, after corresponding operation is carried out on a first station, the workpiece needs to flow to the next station, a controller controls a rotating motor 8 to start and drive a rotating part 1 to rotate, an angle sensor 15 detects the rotating angle of a rotating frame 7 and transmits the rotating angle to the controller, the controller compares a received angle signal with a preset angle value, and when the received angle signal reaches a preset angle, the controller controls the rotating motor 8 to stop and brake so that the rotating part 1 cannot rotate relative to a fixed part 2; then controlling the positioning telescopic part 3 to extend, and whether the movable end of the positioning telescopic part can be matched with the positioning part 9, if not, releasing the contracting brake of the rotating motor 8 by the controller, rotating the rotating part 1 to finely adjust the rotating part 1, so that the movable end of the positioning telescopic part 3 can be matched with the positioning column, when the movable end of the positioning telescopic part 3 can be matched with the positioning part 9 and can abut against or block the positioning part 9, controlling the contracting brake of the rotating motor 8 by the controller again, clamping and fixing the rotating part 1 by the clamping and fixing component, and finishing the fixing of the rotating workbench; and then, carrying out corresponding operation on the workpiece on the station, repeating the operation, and after the workpiece which is firstly processed is circulated on the rotary worktable, loosening the workpiece by the workpiece clamping tool to take the workpiece, then re-assembling the workpiece and repeating the steps.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in fig. 1 to 4, a fixing plate 10 is disposed at the bottom of the rotating frame 7, the clamping and fixing assembly includes a clamping cylinder 4, a fixed end of the clamping cylinder 4 is fixed on the base 13, and a movable end of the clamping cylinder extends at a predetermined position to abut against the fixing plate 10 and fix the rotating portion 1. So set up, fixed plate 10 cooperatees with die clamping cylinder 4 and realizes the fixed of rotating part 1 for the rotary worktable is in fixed position, prevents that the relative fixed part 2 of course of working work from removing, guarantees that processing is time stability. The fixing plate 10 is preferably L-shaped.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 3 and 4, the rotary table includes a limiting assembly, the limiting assembly includes a limiting support 11 disposed on the rotary frame 7 and at least two limiting stoppers 12 disposed on the base 13, a connecting line of the two limiting stoppers 12 passes through an axis of the support shaft 14, and the limiting stoppers 12 are used for blocking the limiting support 11 to further limit a rotation range of the rotary frame 7. So set up, during the duplex position, the direction of rotation of swivel work head rotating part 1 is for making a round trip 180 rotations, and swivel work head itself can the self-adaptation eliminate the error like this to accumulated precision error when can reducing the rotation.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 2 to 4, the positioning member 9 includes at least two positioning columns, a connection line of the two positioning columns passes through a rotation center of the rotating frame 7, the positioning telescopic member 3 is a positioning cylinder, a fixed end of the positioning cylinder is fixed on the base 13, and when the rotating frame 7 rotates to a predetermined position, the fixed end of the positioning cylinder extends to abut against or block the positioning columns.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 4, the output end of the rotating electrical machine 8 is provided with a driving gear 16, the supporting shaft 14 is provided with a transmission gear 17, the driving gear 16 is engaged with the transmission gear 17, and the diameter of the driving gear 16 is smaller than the diameter of the transmission gear 17.

In another embodiment of the present invention based on the above embodiment, as shown in fig. 1 and 4, the rotary table is provided with a lubrication oil piping system 5 for lubricating the inner balls of the support shaft 14 and the meshing portion of the drive gear 16 and the transmission gear 17. Thus, the lubricating oil piping system 5 lubricates the rotating portion of the support shaft 14, and enhances the stability of the rotation.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in fig. 1 and fig. 2, the rotary table is provided with a partition plate 6 for isolating processing dust. So set up, baffle 6 divides into a plurality of stations with rotating part 1, can completely cut off the dust of work piece processing.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in fig. 1 and fig. 2, the positioning cylinder and the clamping cylinder 4 are electrically connected to the controller, and the controller can control the extension, retraction, start and stop of the positioning cylinder and the clamping cylinder 4. So set up, above-mentioned structure all controls through the controller, can realize the automation and the intellectuality of work piece processing engineering.

On the basis of the above embodiment, in another embodiment of the present invention, the rotating frame 7 has a plurality of positioning pin holes for installing the workpiece clamping tool in cooperation with the positioning pins. According to the arrangement, the clamping tools for the different workpieces can be installed through the positioning pins, the workpieces of different types can be machined, the clamping tools for the other workpieces can be replaced, and the adaptability of the rotary workbench is improved.

On the basis of the above embodiment, in another embodiment of the present invention, an installation station for installing a workpiece clamping tool is reserved in the fixing portion 2.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A rotary worktable is characterized by comprising a worktable main body, a controller, a positioning assembly and a clamping and fixing assembly, wherein the worktable main body comprises a fixing part and a rotating part, the fixing part comprises a base, a rotary motor and a supporting shaft, the supporting shaft is rotatably connected to the base, the output end of the rotary motor is in transmission connection with the supporting shaft and can drive the supporting shaft to rotate, the rotating part comprises a rotating frame, the rotating frame is arranged on the fixing part and is connected with the supporting shaft, the rotating frame is provided with a worktable surface, the rotary worktable is provided with an angle sensor for detecting the rotation angle of the rotating frame, the angle sensor is in communication connection with the controller, the rotary motor is electrically connected with the controller, the controller is used for receiving the detection signal of the angle sensor and controlling the starting, stopping and brake of the rotary motor, the positioning assembly comprises a positioning telescopic piece arranged on the base and a positioning piece arranged at the bottom of the rotating frame, when the rotating frame rotates to a preset position, the positioning telescopic piece extends to abut against or block the positioning piece, and the clamping fixing assembly is arranged on the base and used for clamping and fixing the rotating frame.

2. The rotary worktable according to claim 1, wherein a fixed plate is arranged at the bottom of the rotary frame, the clamping and fixing assembly comprises a clamping cylinder, a fixed end of the clamping cylinder is fixed on the base, and a movable end of the clamping cylinder is extended at a preset position to abut against the fixed plate and fix the rotating part.

3. The rotary worktable according to claim 2, wherein the rotary worktable comprises a limiting assembly, the limiting assembly comprises a limiting support seat arranged on the rotary frame and at least two limiting stoppers arranged on the base, a connecting line of the two limiting stoppers passes through the axis of the supporting shaft, and the limiting stoppers are used for blocking the limiting support seat and further limiting the rotation range of the rotary frame.

4. The rotary workbench according to claim 3, wherein the positioning member comprises at least two positioning posts, the connecting line of the two positioning posts passes through the rotation center of the rotary frame, the positioning telescopic member is a positioning cylinder, the fixed end of the positioning cylinder is fixed on the base, and when the rotary frame rotates to a predetermined position, the fixed end of the positioning cylinder extends to abut against or block the positioning posts.

5. The rotary worktable according to any one of claims 1 to 4, wherein the output end of the rotary motor is provided with a driving gear, the supporting shaft is provided with a transmission gear, the driving gear is meshed with the transmission gear, and the diameter of the driving gear is smaller than that of the transmission gear.

6. The rotary table of claim 5, wherein the rotary table is provided with a lubrication oil conduit system for lubricating the inner balls of the support shaft and the meshing of the drive gear and the drive gear.

7. The rotary table of claim 5, wherein the rotary table top is provided with a partition for isolating process dust.

8. The rotary worktable according to claim 4, wherein the positioning cylinder and the clamping cylinder are electrically connected with the controller, and the controller can control the extension, the start and the stop of the positioning cylinder and the clamping cylinder.

9. The rotary worktable according to claim 8, wherein the rotary frame is provided with a plurality of positioning pin holes for mounting a workpiece clamping tool in cooperation with the positioning pins.

10. The rotary worktable according to claim 9, wherein the fixed part is reserved with an installation station for installing a workpiece clamping tool.