A rotating workbench

Abstract

The present invention relates to a rotary workbench, comprising a workbench body, a controller, a positioning assembly and a clamping and fixing assembly, wherein the workbench body comprises a fixed part and a rotating part, wherein the rotating part comprises a rotating frame, wherein the rotating frame is arranged on the fixed part and connected to a supporting shaft, wherein the rotating frame is provided with a work table surface, wherein the rotary workbench is provided with an angle sensor, wherein the controller is used to receive a detection signal of the angle sensor and control the start and stop and the brake of the rotary motor, wherein the positioning assembly comprises a positioning telescopic member arranged on a base and a positioning member arranged at the bottom of the rotating frame, wherein the positioning telescopic member is extended to resist or clamp the positioning member when the rotating frame rotates to a predetermined position, and wherein the clamping and fixing assembly is arranged on the base. The present invention has a simple overall structure, can meet the positioning accuracy requirements while increasing the workstations and improving the production rhythm, and can ensure that the workbench can operate stably and reliably for a long time with a low maintenance rate.

Description

Technical Field

[0001] The invention belongs to the technical field of workpiece processing, and in particular relates to a rotary worktable. Background Art

[0002] Machining is the abbreviation of mechanical processing, which refers to the processing technology of removing materials through mechanical precision processing. Mechanical processing mainly includes two categories: manual processing and CNC processing. Nowadays, most machining workshops use CNC processing technology. The CNC controller of CNC machine tools controls the axes of CNC machine tools by identifying and interpreting program languages, automatically removing materials as required, and thus obtaining finely processed workpieces. CNC machining processes workpieces in a continuous manner, which is suitable for large quantities of parts with complex shapes, and a workbench is required during the processing.

[0003] At present, the utilization rate of the workstations of the rotary worktable is not high, clamping and processing cannot be carried out at the same time, and the rotary worktable directly clamps the processed workpiece, resulting in limited types of workpieces that can be processed by the rotary worktable, making it not very applicable; the positioning accuracy of the rotary worktable is not high enough, the size of the processed workpiece is too large, and the overall weight is too heavy, resulting in the inability to guarantee stability during processing and changes in positioning accuracy during processing; the rotary table itself does not have a lubrication system, resulting in abnormal movement noise, uneven rotation and positioning accuracy that does not meet requirements after working for too long; excessive rotation of the rotary table itself will cause the accumulation of rotation angle errors, making the operation of repairing or installing the rotary table complicated.

[0004] In summary, there is an urgent need to provide a rotary worktable that can increase the number of workstations and improve the production rhythm while meeting the positioning accuracy requirements and ensuring that the worktable operates stably and reliably for a long time with a low maintenance rate. Summary of the invention

[0005] The object of the present invention is to provide a rotary worktable which can increase the number of workstations and improve the production rhythm while meeting the positioning accuracy requirements and ensuring the long-term stable and reliable operation of the worktable with a low maintenance rate.

[0006] The above object is achieved through the following technical scheme: a rotating workbench, comprising a workbench body, a controller, a positioning assembly and a clamping and fixing assembly, the workbench body comprising a fixed part and a rotating part, the fixed part comprising a base, a rotating motor and a support shaft, the support shaft is rotatably connected to the base, the output end of the rotating motor is transmission-connected to the support shaft and can drive the support shaft to rotate, the rotating part comprises a rotating frame, the rotating frame is arranged on the fixed part and connected to the support shaft, the rotating frame is provided with a work table surface, the rotating workbench is provided with an angle sensor for detecting the rotation angle of the rotating frame, the angle sensor is communicatively connected to the controller, the rotating motor is electrically connected to the controller, the controller is used to receive the detection signal of the angle sensor and control the start, stop and brake of the rotating motor, the positioning assembly comprises a positioning telescopic member arranged on the base and a positioning member arranged at the bottom of the rotating frame, when the rotating frame rotates to a predetermined position, the positioning telescopic member is extended to resist or clamp the positioning member, and the clamping and fixing assembly is arranged on the base for clamping and fixing the rotating frame.

[0007] The present invention is used for fixing and positioning a workpiece during processing. During processing, the workpiece circulates on the rotating workbench. In a specific application process, the workpiece is clamped by a workpiece clamping fixture. After a corresponding operation is performed at a first station, the workpiece needs to be transferred to the next station. The controller controls the rotating motor to start driving the rotating part to rotate. The angle sensor detects the rotation angle of the rotating frame and transmits it to the controller. The controller compares the received angle signal with the preset angle value. When the received angle signal reaches the preset angle, the controller controls the rotating motor to stop and brakes, so that the rotating part cannot rotate relative to the fixed part. Then the positioning telescopic part is controlled to extend, and its movable end Can it cooperate with the positioning part? If not, the controller releases the brake of the rotating motor, rotates the rotating part to make slight adjustments to the rotating part, so that the movable end of the positioning telescopic part can cooperate with the positioning column. When the movable end of the positioning telescopic part can cooperate with the positioning part and it can resist or jam the positioning part, the controller controls the brake of the rotating motor again, and the clamping and fixing assembly clamps and fixes the rotating part to complete the fixation of the rotary worktable; then the workpiece on the workstation is operated accordingly, and this is repeated. When the first workpiece to be processed completes the circulation on the rotary worktable, the workpiece clamping tool releases the workpiece to take it out, then reinstalls it and repeats the above steps.

[0008] A further technical solution is that a fixed plate is provided at the bottom of the rotating frame, and the clamping and fixing assembly includes a clamping cylinder, the fixed end of the clamping cylinder is fixed to the base, and the movable end is extended at a predetermined position to support the fixed plate and fix the rotating part. In this way, the fixed plate cooperates with the clamping cylinder to fix the rotating part, so that the rotating table is in a fixed position, preventing the workpiece from moving relative to the fixed part during the processing, and ensuring the stability during processing. The fixed plate is preferably L-shaped.

[0009] A further technical solution is that the rotating table includes a limit assembly, the limit assembly includes a limit support provided on the rotating frame and at least two limit blocks provided on the base, the connection line of the two limit blocks passes through the axis of the support shaft, and the limit blocks are used to block the limit support and thus limit the rotation range of the rotating frame. In this way, when the rotating table is in a double position, the rotation direction of the rotating part of the rotating table is 180° back and forth, so that the rotating table itself can adaptively eliminate errors, thereby reducing the accumulated precision errors during rotation.

[0010] A further technical solution is that the positioning member includes at least two positioning columns, the line connecting the two positioning columns passes through the rotation center of the rotating frame, the positioning telescopic member is a positioning cylinder, the fixed end of the positioning cylinder is fixed on the base, and when the rotating frame rotates to a predetermined position, the fixed end of the positioning cylinder is extended to resist or clamp the positioning column.

[0011] A further technical solution is that a driving gear is provided at the output end of the rotating motor, and a transmission gear is provided at the support shaft, the driving gear is meshed with the transmission gear, and the diameter of the driving gear is smaller than the diameter of the transmission gear.

[0012] A further technical solution is that the rotary worktable is provided with a lubricating oil pipeline system for lubricating the inner ball of the support shaft and the meshing point between the driving gear and the transmission gear. In this way, the lubricating oil pipeline system lubricates the rotating part of the support shaft to enhance the stability of the rotation.

[0013] A further technical solution is that a partition for isolating processing dust is provided on the rotating worktable. In this way, the partition divides the rotating part into a plurality of workstations, which can isolate the dust from the workpiece processing.

[0014] A further technical solution is that the positioning cylinder and the clamping cylinder are electrically connected to the controller, and the controller can control the extension and start and stop of the positioning cylinder and the clamping cylinder. In this way, the above structures are all controlled by the controller, which can realize the automation and intelligence of the workpiece processing project.

[0015] A further technical solution is that the rotating frame has a plurality of positioning pin holes for mounting workpiece clamping fixtures in cooperation with the positioning pins. With such a configuration, a plurality of different workpiece clamping fixtures can be mounted through the positioning pins, so that a variety of different types of workpieces can be processed, and other workpiece clamping fixtures can be replaced, thereby increasing the adaptability of the rotating worktable.

[0016] A further technical solution is that the fixing portion is provided with a reserved installation position for installing a workpiece clamping fixture.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts multiple workstations, and different workpiece clamping fixtures can be installed at the same time to increase the applicability of the rotary worktable, and the accuracy of the rotation angle and the maintenance of accuracy during the processing are guaranteed by the positioning assembly and the clamping and fixing assembly; in addition, the rotation, positioning, and clamping are automatically and integratedly controlled by the controller, and the rotation direction of the rotary worktable is 180° back and forth, and the rotary worktable itself can adaptively eliminate errors; the overall structure of the present invention is simple, and while increasing the workstations to improve the production rhythm, it can meet its positioning accuracy requirements and ensure that the worktable can operate stably and reliably in the long term with a low maintenance rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 It is a structural schematic diagram of a rotary worktable involved in one embodiment of the present invention;

[0020] Figure 2 A front view of a rotary table according to an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of a rotating part involved in one embodiment of the present invention;

[0022] Figure 4 It is a schematic structural diagram of a fixing part involved in one embodiment of the present invention.

[0023] In the figure:

[0024] 1 Rotating part 2 Fixed part 3 Positioning telescopic part 4 Clamping cylinder

[0025] 5 Lubricating oil pipeline system 6 Partition 7 Rotating frame 8 Rotating motor

[0026] 9 positioning member 10 fixing plate 11 limiting support 12 limiting block

[0027] 13 base 14 support shaft 15 angle sensor 16 driving gear

[0028] 17 Transmission gear DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention. In addition, those skilled in the art can make corresponding combinations of the features in the embodiments and in different embodiments in this document based on the description of this document.

[0030] The embodiments of the present invention are as follows, referring to Figures 1 to 4 A rotary workbench includes a workbench body, a controller, a positioning assembly and a clamping and fixing assembly. The workbench body includes a fixed part 2 and a rotating part 1. The fixed part 2 includes a base 13, a rotating motor 8 and a support shaft 14. The support shaft 14 is rotatably connected to the base 13. The output end of the rotating motor 8 is transmission-connected to the support shaft 14 and can drive the support shaft 14 to rotate. The rotating part 1 includes a rotating frame 7, which is arranged on the fixed part 2 and connected to the support shaft 14. The rotating frame 7 is provided with a work table surface. The rotary workbench is provided with a device for detecting the rotation An angle sensor 15 for the rotation angle of the rotating frame 7, the angle sensor 15 is communicatively connected to the controller, the rotating motor 8 is electrically connected to the controller, the controller is used to receive the detection signal of the angle sensor 15 and control the start, stop and brake of the rotating motor 8, the positioning assembly includes a positioning telescopic member 3 arranged on the base 13 and a positioning member 9 arranged at the bottom of the rotating frame 7, when the rotating frame 7 rotates to a predetermined position, the positioning telescopic member 3 is extended to resist or clamp the positioning member 9, and the clamping and fixing assembly is arranged on the base 13 for clamping and fixing the rotating frame 7.

[0031] The present invention is used for fixing and positioning a workpiece during processing. During processing, the workpiece flows on the rotating workbench. In a specific application process, the workpiece is clamped by a workpiece clamping fixture. After a corresponding operation is performed at a first station, the workpiece needs to flow to the next station. The controller controls the rotating motor 8 to start driving the rotating part 1 to rotate. The angle sensor 15 detects the rotation angle of the rotating frame 7 and transmits it to the controller. The controller compares the received angle signal with the preset angle value. When the received angle signal reaches the preset angle, the controller controls the rotating motor 8 to stop and brake, so that the rotating part 1 cannot rotate relative to the fixed part 2; then the positioning telescopic member 3 is controlled to extend, and its movable end Can it cooperate with the positioning part 9? If not, the controller releases the brake of the rotating motor 8, rotates the rotating part 1 to make a slight adjustment to the rotating part 1, so that the movable end of the positioning telescopic part 3 can cooperate with the positioning column. When the movable end of the positioning telescopic part 3 can cooperate with the positioning part 9, it can resist or jam the positioning part 9, the controller controls the rotating motor 8 to hold the brake again, and the clamping and fixing assembly clamps and fixes the rotating part 1 to complete the fixation of the rotary worktable; then the workpiece on the workstation is operated accordingly, and this is repeated. When the first workpiece to be processed completes the circulation on the rotary worktable, the workpiece clamping tool releases the workpiece to take out the workpiece, then reinstalls the workpiece and repeats the above steps.

[0032] Based on the above embodiment, in another embodiment of the present invention, Figures 1 to 4 The bottom of the rotating frame 7 is provided with a fixed plate 10, and the clamping and fixing assembly includes a clamping cylinder 4, the fixed end of the clamping cylinder 4 is fixed on the base 13, and the movable end is extended at a predetermined position to support the fixed plate 10 and fix the rotating part 1. In this way, the fixed plate 10 cooperates with the clamping cylinder 4 to fix the rotating part 1, so that the rotating table is in a fixed position, preventing the workpiece from moving relative to the fixed part 2 during the processing process, and ensuring the stability during processing. The fixed plate 10 is preferably L-shaped.

[0033] Based on the above embodiment, in another embodiment of the present invention, Figure 3 and Figure 4 The rotating table includes a limit assembly, which includes a limit support 11 arranged on the rotating frame 7 and at least two limit blocks 12 arranged on the base 13. The connection line of the two limit blocks 12 passes through the axis of the support shaft 14. The limit blocks 12 are used to block the limit support 11 and thus limit the rotation range of the rotating frame 7. In this way, when the rotating table is in a double position, the rotation direction of the rotating part 1 of the rotating table is 180° back and forth, so that the rotating table itself can adaptively eliminate errors, thereby reducing the accumulated precision errors during rotation.

[0034] Based on the above embodiment, in another embodiment of the present invention, Figures 2 to 4The positioning member 9 includes at least two positioning columns, and the connecting line of the two positioning columns passes through the rotation center of the rotating frame 7. The positioning telescopic member 3 is a positioning cylinder, and the fixed end of the positioning cylinder is fixed on the base 13. When the rotating frame 7 rotates to a predetermined position, the fixed end of the positioning cylinder is extended to resist or clamp the positioning column.

[0035] Based on the above embodiment, in another embodiment of the present invention, Figure 4 A driving gear 16 is provided at the output end of the rotating motor 8 , and a transmission gear 17 is provided at the support shaft 14 . The driving gear 16 is meshed with the transmission gear 17 , and a diameter of the driving gear 16 is smaller than a diameter of the transmission gear 17 .

[0036] Based on the above embodiment, in another embodiment of the present invention, Figure 1 and Figure 4 The rotary table is provided with a lubricating oil pipeline system 5 for lubricating the inner ball of the support shaft 14 and the meshing position of the driving gear 16 and the transmission gear 17. In this way, the lubricating oil pipeline system 5 lubricates the rotating part of the support shaft 14 to enhance the stability of the rotation.

[0037] Based on the above embodiment, in another embodiment of the present invention, Figure 1 and Figure 2 The rotating work table is provided with a partition 6 for isolating processing dust. In this way, the partition 6 divides the rotating part 1 into a plurality of workstations, which can isolate the dust of workpiece processing.

[0038] Based on the above embodiment, in another embodiment of the present invention, Figure 1 and Figure 2 The positioning cylinder and the clamping cylinder 4 are electrically connected to the controller, and the controller can control the extension and start and stop of the positioning cylinder and the clamping cylinder 4. In this way, the above structures are all controlled by the controller, which can realize the automation and intelligence of the workpiece processing project.

[0039] Based on the above embodiment, in another embodiment of the present invention, the rotating frame 7 has a plurality of positioning pin holes for mounting workpiece clamping fixtures in cooperation with the positioning pins. In this way, a plurality of different workpiece clamping fixtures can be mounted through the positioning pins, so that the processing of various different types of workpieces can be realized, and other workpiece clamping fixtures can be replaced, thereby increasing the adaptability of the rotating worktable.

[0040] On the basis of the above embodiment, in another embodiment of the present invention, the fixing portion 2 is provided with a reserved installation position for installing a workpiece clamping tool.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts multiple workstations, and different workpiece clamping fixtures can be installed at the same time to increase the applicability of the rotary worktable, and the accuracy of the rotation angle and the maintenance of accuracy during the processing are guaranteed by the positioning assembly and the clamping and fixing assembly; in addition, the rotation, positioning, and clamping are automatically and integratedly controlled by the controller, and the rotation direction of the rotary worktable is 180° back and forth, and the rotary worktable itself can adaptively eliminate errors; the overall structure of the present invention is simple, and while increasing the workstations to improve the production rhythm, it can meet its positioning accuracy requirements and ensure that the worktable can operate stably and reliably in the long term with a low maintenance rate.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rotary table, characterized in that: The invention comprises a workbench body, a controller, a positioning assembly and a clamping and fixing assembly, wherein the workbench body comprises a fixed part and a rotating part, wherein the fixed part comprises a base, a rotating motor and a supporting shaft, wherein the supporting shaft is rotatably connected to the base, and the output end of the rotating motor is transmission-connected to the supporting shaft and can drive the supporting shaft to rotate, wherein the rotating part comprises a rotating frame, wherein the rotating frame is arranged on the fixed part and connected to the supporting shaft, wherein the rotating frame is provided with a worktable surface, and the rotating workbench is provided with an angle sensor for detecting the rotation angle of the rotating frame, wherein the angle sensor is communicatively connected to the controller, and the rotating motor is electrically connected to the controller. , the controller is used to receive the detection signal of the angle sensor and control the start, stop and brake of the rotating motor, the positioning component includes a positioning telescopic member arranged on the base and a positioning member arranged at the bottom of the rotating frame, when the rotating frame rotates to a predetermined position, the positioning telescopic member extends to resist or clamp the positioning member, the clamping and fixing component is arranged on the base for clamping and fixing the rotating frame; a fixing plate is provided at the bottom of the rotating frame, the clamping and fixing component includes a clamping cylinder, the fixed end of the clamping cylinder is fixed on the base, and the movable end is extended at a predetermined position to resist the fixed plate and fix the rotating part, the rotating The output end of the rotating motor is provided with a driving gear, the support shaft is provided with a transmission gear, the driving gear is meshed with the transmission gear, the diameter of the driving gear is smaller than the diameter of the transmission gear, the rotating workbench includes a limit assembly, the limit assembly includes a limit support arranged on the rotating frame and at least two limit blocks arranged on the base, the line connecting the two limit blocks passes through the axis of the support shaft, the limit block is used to block the limit support and thus limit the rotation range of the rotating frame, the positioning member includes at least two positioning columns, the line connecting the two positioning columns passes through the rotation center of the rotating frame, and the positioning telescopic member The present invention relates to a positioning cylinder, wherein the fixed end of the positioning cylinder is fixed on the base, and when the rotating frame rotates to a predetermined position, the fixed end of the positioning cylinder is extended to resist or clamp the positioning column, and the rotating worktable is provided with a lubricating oil pipeline system for lubricating the internal ball of the supporting shaft and the meshing position of the driving gear and the transmission gear, and a partition for isolating processing dust is provided on the rotating worktable surface, and the positioning cylinder and the clamping cylinder are electrically connected to the controller, and the controller can control the extension and retraction and start and stop of the positioning cylinder and the clamping cylinder, and the rotating frame is provided with a plurality of positioning pin holes for cooperating with the positioning pins to install the workpiece clamping tooling.

2. The rotary table according to claim 1, characterized in that: The fixing portion is provided with an installation position for installing a workpiece clamping tool.

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