A rotary table

Abstract

The utility model relates to numerical control machine tool technical field provides a kind of rotary table, comprising: first rotating unit, including first rotary table pedestal and first rotating shaft being rotatably arranged in the first rotary table pedestal;Second rotating unit, it is oppositely arranged with first rotating unit, including second rotary table pedestal and second rotating shaft being rotatably arranged in second rotary table pedestal;Workbench, its both ends are connected with first rotating shaft and second rotating shaft respectively, for fixing workpiece;Drive device, it is set on first rotating unit and / or second rotating unit.The rotary table provided by the utility model, through first rotating unit, second rotating unit and the workbench connected with both ends respectively, cooperate drive device to drive workbench rotation, realize that workpiece once clamping can complete the processing of positive and negative face, avoid the problem that two clamping, change machine tool or sub-process processing are needed in traditional processing.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a rotary worktable. Background Technology

[0002] With technological advancements, multi-axis machining is finding increasingly wider applications. The rotary table, as the rotating axis of a machine tool, is an indispensable component of multi-axis machine tools. Traditional cradle-type rotary tables are widely used in multi-axis machine tools due to their multi-axis linkage, high precision, and ability to machine multiple surfaces. However, traditional rotary tables are limited by their single working structure, resulting in limited machining efficiency. In some fields, such as automotive and smart home appliances, increasing the number of machine tools is necessary to ensure efficient batch processing, leading to increased machining costs.

[0003] Some patents currently propose rotary tables with dual-station and multi-station structures, which can indeed improve processing efficiency to some extent. However, in some processing fields that require machining on both sides, the bottom surface of the workpiece cannot be machined due to limitations in bridge plates and fixture structures. In actual processing, the bottom surface of the workpiece can only be machined by clamping it twice in separate processes, which increases processing time and affects processing efficiency. Utility Model Content

[0004] This utility model provides a rotary worktable to solve the problem that existing worktables can only be used for machining workpieces that require processing on both sides in two separate processes to reach the bottom surface of the workpiece, which increases processing time and affects processing efficiency.

[0005] This utility model provides a rotary worktable, comprising: The first rotating unit includes a first turntable base and a first rotating shaft rotatably disposed in the first turntable base; The second rotating unit is disposed opposite to the first rotating unit and includes a second turntable base and a second rotating shaft rotatably disposed in the second turntable base; The worktable, with its two ends connected to the first rotating shaft and the second rotating shaft respectively, is used to fix the workpiece; A driving device is disposed on the first rotating unit and / or the second rotating unit, for driving the first rotating shaft and / or the second rotating shaft to rotate, thereby causing the worktable to rotate around the axis of the first rotating shaft.

[0006] According to the present invention, a rotary worktable is provided, wherein the driving device is disposed in the first turntable base and drives the worktable through the first rotating shaft.

[0007] According to the rotary worktable provided by this utility model, the first rotating unit further includes: a first rotary table bearing; the second rotating unit further includes: a second rotary table bearing; The first turntable bearing is fixed in the first turntable base, and the first rotating shaft is rotatably disposed in the first turntable bearing; The second turntable bearing is fixed in the second turntable base, and the second rotating shaft is rotatably disposed in the second turntable bearing.

[0008] According to the present invention, a rotary worktable is provided, one end of which is connected to the first rotating shaft via a first swing arm, and the other end of which is connected to the second rotating shaft via a second swing arm.

[0009] According to the rotary worktable provided by this utility model, the first rotary unit further includes: a first rotary joint; the second rotary unit further includes: a second rotary joint; The first rotary joint is disposed in the first rotating shaft, the second rotary joint is disposed in the second rotating shaft, the first rotary joint is connected to the first swing arm, and the second rotary joint is connected to the second swing arm.

[0010] According to the present invention, a rotary worktable is provided, the worktable comprising: a turntable bridge and a clamp; The two ends of the turntable bridge are connected to the first swing arm and the second swing arm, and the fixture clamps the workpiece.

[0011] According to the present invention, a rotary worktable is provided on the turntable bridge plate, wherein at least two workstations are provided, and each workstation is equipped with at least one of the aforementioned fixtures.

[0012] According to the present invention, a rotary worktable further includes: The machine tool spindle is located on one side of the worktable and is used to process the workpiece when the worktable rotates to the corresponding angle.

[0013] According to the present invention, a rotary worktable is provided, wherein the worktable has a first state and a second state; In the first state, the front of the worktable is opposite to the machine tool spindle; In the second state, the back of the worktable is opposite to the machine tool spindle.

[0014] According to the present invention, a rotary worktable is provided, wherein the driving device includes a first drive motor disposed in the first turntable base, and the driving end of the first drive motor is connected to the first rotating shaft.

[0015] The rotary worktable provided by this utility model, through a first rotary unit, a second rotary unit and worktables connected to both ends respectively, and a drive device to drive the worktable to rotate, realizes that the front and back sides of the workpiece can be processed in one clamping, avoiding the problems of secondary clamping, machine tool change or multi-process processing required in traditional processing. It is particularly suitable for the production of batch workpieces that need to be processed on both sides, significantly shortens the processing time, and reduces equipment investment and production costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure provided by this utility model example.

[0018] Figure 2 This is a schematic diagram of the overall structure of a two-station workbench provided in this utility model example.

[0019] Figure 3 This is a schematic diagram of the overall structure under a certain processing scenario provided by this utility model.

[0020] Figure 4 This is a schematic diagram of the overall structure under a certain processing scenario provided by this utility model.

[0021] Figure 5 This is a schematic diagram of the overall structure of the four-station workbench provided in this utility model example.

[0022] Figure label: 1. First rotating unit; 11. First turntable base; 12. First rotating shaft; 13. First rotary joint; 14. First turntable bearing; 15. First swing arm; 16. First drive motor; 2. Second rotating unit; 21. Second turntable base; 22. Second rotating shaft; 23. Second rotary joint; 24. Second turntable bearing; 25. Second swing arm; 3. Worktable; 31. Turntable bridge; 32. Fixture; 41. Machine tool spindle; 42. Workpiece. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] The following is combined with Figures 1-3 This invention describes the rotary worktable.

[0025] This utility model embodiment provides a rotary worktable, such as Figures 1 to 3 As shown, the system includes a first rotating unit 1, a second rotating unit 2, a worktable 3, and a driving device. The first rotating unit 1 includes a first turntable base 11 and a first rotating shaft 12 rotatably disposed within the first turntable base 11. The first rotating shaft 12 can rotate flexibly, providing basic power support for the subsequent rotation of the worktable 3. The second rotating unit 2 is disposed opposite to the first rotating unit 1 and includes a second turntable base 21 and a second rotating shaft 22 rotatably disposed within the second turntable base 21. The rotational movement of the second rotating unit 2 coordinates with the rotational movement of the first rotating shaft 12, jointly driving the worktable 3 to achieve rotational action.

[0026] The worktable 3 is connected at both ends to the first rotating shaft 12 and the second rotating shaft 22 respectively, for fixing the workpiece 42; the driving device is set on the first rotating unit 1 and / or the second rotating unit 2, for driving the first rotating shaft 12 and / or the second rotating shaft 22 to rotate, thereby driving the worktable 3 to rotate around the axis of the first rotating shaft 12.

[0027] Different types of drive devices can be selected according to actual processing needs, such as motor drive devices, hydraulic drive devices, or pneumatic drive devices. Motor drive devices have the advantages of fast response speed, high control precision, and smooth operation, and are suitable for occasions with high processing precision requirements; hydraulic drive devices have the characteristics of large output torque, smooth transmission, and easy to achieve stepless speed change, and are suitable for processing large workpieces or processing scenarios that require large torque; pneumatic drive devices have a simple structure, low cost, and convenient maintenance, but are relatively weak in torque output and control precision.

[0028] When using this rotary table for machining, such as Figure 3As shown, the drive device first drives the first rotating shaft 12 and / or the second rotating shaft 22 to rotate, causing the worktable 3 to rotate around the axis of the first rotating shaft 12 to a suitable position, exposing the front surface of the workpiece 42 to the processing range of the machining equipment. For example, if the front surface of the workpiece 42 needs to be milled, the drive device will rotate the worktable 3 to an angle position where the milling cutter can machine the front surface of the workpiece 42. During the rotation, the drive device ensures that the rotation of the worktable 3 is smooth and accurate through precise control and transmission systems. At the same time, the control system monitors the rotation position and angle of the worktable 3 in real time and feeds it back to the drive device so as to adjust the rotation speed and angle in a timely manner, ensuring that the worktable 3 can accurately reach the preset processing position.

[0029] After the front side of workpiece 42 is machined, the drive device is restarted, driving the first rotating shaft 12 and / or the second rotating shaft 22 to rotate, causing the worktable 3 to rotate 180 degrees (or other suitable rotation angle) around the axis of the first rotating shaft 12. Figure 4 As shown, the reverse side of workpiece 42 is exposed within the processing range of the processing equipment. During rotation, the drive device strictly controls the rotation speed and angle according to the preset parameters to ensure that the worktable 3 can rotate smoothly and accurately to the reverse side processing position.

[0030] The rotary worktable provided by this utility model, through the first rotary unit 1, the second rotary unit 2 and the worktable 3 connected to both ends respectively, and the drive device drives the worktable 3 to rotate, realizes that the workpiece 42 can be processed on both sides in one clamping, avoiding the problems of secondary clamping, machine tool change or multi-process processing required in traditional processing. It is particularly suitable for the production of batch workpieces 42 that need to be processed on both sides, significantly shortens the processing time, and reduces equipment investment and production costs.

[0031] In some embodiments, such as Figures 1 to 3 As shown, the drive device is located inside the first turntable base 11 and drives the worktable 3 through the first rotating shaft 12.

[0032] When the drive unit is activated, it transmits power to the worktable 3 via the first rotating shaft 12. This power transmission method enables the worktable 3 to rotate precisely and stably around the axis of the first rotating shaft 12. During rotation, the second rotating shaft 22 is rotatably mounted in the second turntable base 21, opposite to the first rotating shaft 12. This relative arrangement allows the second rotating shaft 22 to provide additional support and stability as the worktable 3 rotates. Specifically, the second rotating shaft 22 can rotate accordingly as the worktable 3 rotates, thereby ensuring that the worktable 3 remains balanced during rotation.

[0033] In some embodiments, the second rotating shaft 22 may also be equipped with sensors for real-time monitoring of its rotational position and speed. These sensors can feed data back to the control system, which then uses this data to precisely control the drive mechanism, thereby achieving precise control of the rotational motion of the worktable 3.

[0034] In some embodiments, such as Figures 1 to 4 As shown, the first rotating unit 1 further includes a first turntable bearing 14; the second rotating unit 2 further includes a second turntable bearing 24; the first turntable bearing 14 is fixed in the first turntable base 11, and the first rotating shaft 12 is rotatably disposed in the first turntable bearing 14; the second turntable bearing 24 is fixed in the second turntable base 21, and the second rotating shaft 22 is rotatably disposed in the second turntable bearing 24.

[0035] Specifically, the first turntable bearing 14 is fixed inside the first turntable base 11, ensuring a stable position and condition during operation. Simultaneously, the first rotating shaft 12 is rotatably mounted inside the first turntable bearing 14, allowing for flexible and stable rotation under the support and constraint of the first turntable bearing 14. Similarly, the second turntable bearing 24 is firmly fixed inside the second turntable base 21, providing a stable support foundation for the second rotating shaft 22. The second rotating shaft 22 is rotatably mounted inside the second turntable bearing 24, enabling smooth and reliable rotation under the support of the second turntable bearing 24.

[0036] By setting the first rotary table bearing 14 and the second rotary table bearing 24 in the first rotary unit 1 and the second rotary unit 2 respectively, not only is the structural stability of the entire rotary table enhanced, but the accuracy and reliability of the rotary motion of the worktable 3 are also further improved. This design enables the rotary table to rotate more smoothly during the machining process, thus providing a strong guarantee for the high-quality machining of the workpiece 42.

[0037] In some embodiments, such as Figures 1 to 4 As shown, one end of the worktable 3 is not directly connected to the first rotating shaft 12, but is connected to the first rotating shaft 12 through the first swing arm 15. The length and shape of the first swing arm 15 can be optimized according to actual processing requirements to achieve the best motion characteristics and load capacity. Similarly, the other end of the worktable 3 is not directly connected to the second rotating shaft 22, but is connected to the second rotating shaft 22 through the second swing arm 25. The structure and size of the second swing arm 25 can also be adjusted according to specific application scenarios to adapt to the processing requirements of workpieces 42 of different sizes and shapes.

[0038] In some embodiments, such as Figures 1 to 4 As shown, the first rotating unit 1 further includes a first rotary joint 13; the second rotating unit 2 further includes a second rotary joint 23. The first rotary joint 13 is disposed in the first rotating shaft 12 and is connected to the first swing arm 15. Through this connection, the first rotary joint 13 serves as a power transmission mechanism to transmit external driving force (hydraulic or pneumatic), which is then transmitted to the worktable 3 via the first swing arm 15. The reserved channel on the worktable 3 is mainly used to set up the fixture 32, realizing functions such as clamping the fixture 32 and workpiece inspection. The second rotary joint 23 is disposed in the second rotating shaft 22 and is connected to the second swing arm 25, enabling the second rotary joint 23 to transmit the driving force through the second swing arm 25 and the internal channel of the worktable 3 to the hollow fixture 32, thus also realizing the control of the fixture 32.

[0039] Compared to traditional methods of transmitting power via pipelines, such as rotary cable chains, the rotary joint method offers the significant advantage of 360° rotation. This means that the turntable can rotate 360° while maintaining control of the clamps.

[0040] In some embodiments, such as Figures 1 to 4 As shown, the worktable 3 includes a turntable bridge plate 31 and a clamp 32; the two ends of the turntable bridge plate 31 are connected to the first swing arm 15 and the second swing arm 25, and the clamp 32 clamps the workpiece 42.

[0041] In this embodiment, the clamp 32 can be a hollow clamp 32, and two hollow clamps 32 can be installed on a single turntable bridge plate 31. The hollow clamp 32 is used to clamp the workpiece 42 and can rotate with the turntable bridge plate 31.

[0042] In the actual processing, the workpiece 42 is first placed in the hollow fixture 32 and firmly fixed by the clamping mechanism of the fixture 32. Then, the drive unit is activated, driving the first swing arm 15 and the second swing arm 25 to rotate via the first rotating shaft 12 and the second rotating shaft 22. This causes the turntable bridge plate 31, the hollow fixture 32 on it, and the workpiece 42 to rotate together. During rotation, the control system monitors the rotation position and speed in real time and precisely controls the drive unit through a feedback mechanism to ensure that the workpiece 42 accurately reaches the preset processing position.

[0043] After the front side of workpiece 42 is machined, the drive unit is restarted, causing the turntable bridge plate 31 to rotate 180 degrees (or other suitable rotation angle), exposing the back side of workpiece 42 to the machining range of the machining equipment. Throughout the process, the hollow fixture 32 maintains a firm grip on workpiece 42, ensuring that workpiece 42 does not loosen or shift during rotation and machining.

[0044] The turntable bridge plate 31 has at least two stations, each equipped with at least one fixture 32. These fixtures 32 can be customized according to the shape, size, and processing requirements of the workpiece 42. In some embodiments, each station can be equipped with multiple fixtures 32 to accommodate workpieces 42 of different sizes and shapes. For example, as... Figure 5 As shown, the configuration includes four workstations, each equipped with a hollow clamp 32 for clamping different parts of the workpiece 42, thereby improving clamping stability and flexibility. As the turntable bridge 31 rotates, the workpieces 42 at all four workstations can be processed on both sides, significantly improving processing efficiency. Furthermore, this turntable bridge 31 has a simple structure, significantly reducing its weight compared to other turntable bridges 31, and placing relatively lower demands on the turntable motor's performance.

[0045] In some embodiments, such as Figures 1 to 4 As shown, the rotary table also includes a machine tool spindle 41. The machine tool spindle 41 is located on one side of the worktable 3 and is used to machine the workpiece 42 when the worktable 3 rotates to a corresponding angle. The machine tool spindle 41 starts machining the workpiece 42 when the worktable 3 rotates to the corresponding angle. The machine tool spindle 41 can employ various machining methods, such as milling, drilling, and grinding, depending on the machining requirements of the workpiece 42 and the spindle design.

[0046] In this embodiment, the worktable 3 has a first state and a second state. In the first state, the front of the worktable 3 faces the machine tool spindle 41, and the front of the workpiece 42 is exposed within the machining range of the machine tool spindle 41, allowing for machining operations. In the second state, the back of the worktable 3 faces the machine tool spindle 41. At this time, the back of the workpiece 42 is exposed within the machining range of the machine tool spindle 41, allowing for machining operations.

[0047] When the front side of workpiece 42 needs to be machined, the worktable 3 is in the first state. For example, if the front side of workpiece 42 needs to be milled, drilled, or otherwise machined, the machine spindle 41 can be aligned with the front side of workpiece 42 for machining. After the front side of workpiece 42 is machined, the drive device is activated, causing the worktable 3 to rotate 180 degrees (or other suitable rotation angle), entering the second state. At this time, the back side of workpiece 42 is exposed within the machining range of the machine spindle 41 and can be machined. This design allows both sides of workpiece 42 to be machined in a single setup, reducing the time and error associated with secondary setups.

[0048] Based on the above embodiments, in some embodiments, such as Figures 1 to 4As shown, the driving device includes a first drive motor 16, which is disposed in the first turntable base 11. The drive end of the first drive motor 16 is connected to the first rotating shaft 12. The first drive motor 16 receives commands from the control system and precisely controls the rotation angle of the first rotating shaft 12. When it is necessary to switch the worktable 3 from the first state to the second state, the motor can accurately drive the first rotating shaft 12 to rotate 180 degrees.

[0049] In this embodiment, by setting a first drive motor 16 in the first turntable base 11 and connecting its drive end to the first rotating shaft 12, the rotary table can achieve more efficient and precise rotational motion control. The direct drive method of the first drive motor 16 not only improves transmission efficiency and response speed, but also ensures the precise rotation of the table 3 through a high-precision control system.

[0050] It should be noted that a rotary axis can also be provided in the fixture 32 corresponding to the worktable 3, so that the workpiece 42 can rotate around the axis of the rotary axis. This allows the workpiece 42 to be processed not only on both sides of the worktable 3, but also at multiple angles on each side, thereby achieving more complex processing tasks.

[0051] The rotating shaft is typically positioned at the center of the fixture 32. It can be mechanically connected to a drive unit within the fixture 32 via a coupling or gear drive, ensuring efficient and stable power transmission to the workpiece 42. Simultaneously, the rotating shaft within the fixture 32 can be equipped with sensors to monitor its rotational position and speed in real time. These sensors feed data back to the control system, which then uses this data to precisely control the rotating shaft.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rotary table, characterized by, include: The first rotating unit includes a first turntable base and a first rotating shaft rotatably disposed in the first turntable base; The second rotating unit is disposed opposite to the first rotating unit and includes a second turntable base and a second rotating shaft rotatably disposed in the second turntable base; The worktable, with its two ends connected to the first rotating shaft and the second rotating shaft respectively, is used to fix the workpiece; A driving device is disposed on the first rotating unit and / or the second rotating unit, for driving the first rotating shaft and / or the second rotating shaft to rotate, thereby causing the worktable to rotate around the axis of the first rotating shaft.

2. The rotary table according to claim 1, wherein, The driving device is located inside the first turntable base and drives the worktable through the first rotating shaft.

3. The rotary table according to claim 2, wherein, The first rotating unit further includes: a first turntable bearing; the second rotating unit further includes: a second turntable bearing; The first turntable bearing is fixed in the first turntable base, and the first rotating shaft is rotatably disposed in the first turntable bearing; The second turntable bearing is fixed in the second turntable base, and the second rotating shaft is rotatably disposed in the second turntable bearing.

4. The rotary table according to claim 1, wherein, One end of the workbench is connected to the first rotating shaft via a first swing arm, and the other end is connected to the second rotating shaft via a second swing arm.

5. The rotary table according to claim 4, wherein, The first rotating unit further includes: a first rotary joint; the second rotating unit further includes: a second rotary joint; The first rotary joint is disposed in the first rotating shaft, the second rotary joint is disposed in the second rotating shaft, the first rotary joint is connected to the first swing arm, and the second rotary joint is connected to the second swing arm.

6. The rotary table according to claim 4, wherein, The worktable includes: a turntable bridge and a clamp; The two ends of the turntable bridge are connected to the first swing arm and the second swing arm, and the fixture clamps the workpiece.

7. The rotary table according to claim 6, wherein, The turntable bridge plate is provided with at least two workstations, and each workstation is equipped with at least one of the aforementioned fixtures.

8. The rotary table according to any one of claims 1 to 7, wherein, The rotary table also includes: The machine tool spindle is located on one side of the worktable and is used to process the workpiece when the worktable rotates to the corresponding angle.

9. The rotary table according to claim 8, wherein, The workbench has a first state and a second state; In the first state, the front of the worktable is opposite to the machine tool spindle; In the second state, the back of the worktable is opposite to the machine tool spindle.

10. The rotary table according to any one of claims 2-7, wherein, The driving device includes a first drive motor, which is disposed in the first turntable base, and the drive end of the first drive motor is connected to the first rotating shaft.

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