Double-station grinding and polishing turntable

Abstract

The utility model relates to a kind of double-station polishing and polishing rotary table, it includes drive device, with the bottom plate of drive device connection and the first work rotary table and the second work rotary table of symmetrical arrangement on bottom plate, drive device can drive bottom plate rotation.The first work rotary table and the second work rotary table all include first servo motor, first speed reducer and clamping mechanism, clamping mechanism rotation setting in the top surface of bottom plate, first servo motor and first speed reducer are all set in the bottom surface of bottom plate, the rotation axis of first servo motor and the rotation axis of clamping mechanism are different shaft, first servo motor is connected clamping mechanism by first speed reducer to drive clamping mechanism rotation, clamping mechanism is connected gas source or hydraulic source by pipeline.The rotation axis of first servo motor and the rotation axis of clamping mechanism are arranged by non-coaxial, it is convenient to install first speed reducer between first servo motor and clamping mechanism, by the form of servo motor plus speed reducer, meet the polishing and polishing requirement of high inertia high speed.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, and in particular to a dual-station grinding and polishing turntable. Background Technology

[0002] When grinding workpieces, the equipment typically needs to position the workpiece using a positioning fixture to facilitate machining by the grinding wheel. Polishing usually requires a high relative linear velocity between the workpiece and the tool, so the turntable needs to rotate with the fixture and workpiece to increase the relative linear velocity. Currently, the mainstream turntable technology uses a cam divider or a rotary platform. In scenarios requiring high grinding and polishing linear velocity, the turntable's own speed generally needs to exceed 300 r / min, which neither cam dividers nor rotary platforms can meet; their speeds are usually limited to below 200 r / min. Alternatively, a direct drive motor (DD motor) can achieve the required high speed, but if the workpiece to be processed is large, the turntable needs to have high inertia. Direct drive motors (DD motors) that meet the requirements of high inertia and high speed have complex structures and are difficult to maintain. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a dual-station grinding and polishing turntable.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the dual-station grinding and polishing turntable of this utility model includes a driving device, a base plate connected to the driving device, and a first working turntable and a second working turntable symmetrically arranged on the base plate. The driving device is capable of driving the base plate to rotate.

[0007] Both the first and second worktables include a first servo motor, a first reduction mechanism, and a clamping mechanism. The clamping mechanism is rotatably mounted on the top surface of the base plate, and the first servo motor and the first reduction mechanism are both mounted on the bottom surface of the base plate. The rotation axis of the first servo motor is not coaxial with the rotation axis of the clamping mechanism. The first servo motor is connected to the clamping mechanism through the first reduction mechanism to drive the clamping mechanism to rotate. The clamping mechanism is connected to an air source or a hydraulic source through a pipe.

[0008] Optionally, the first deceleration mechanism includes a first deceleration component and a second deceleration component;

[0009] The output shaft of the first servo motor, the first reduction assembly, and the second reduction assembly are connected in sequence. The second reduction assembly is connected to the rotating shaft of the clamping mechanism. The output shaft of the first servo motor and the rotating shaft of the clamping mechanism are not coaxial.

[0010] Optionally, the first reduction assembly is a reduction gear assembly, and the second reduction assembly includes a first pulley, a second pulley, and a timing belt;

[0011] The input shaft of the reduction gear assembly is connected to the output shaft of the first servo motor. The first pulley is disposed on the output shaft of the reduction gear, and the second pulley is disposed on the rotating shaft of the clamping mechanism. The first pulley and the second pulley are connected by the synchronous belt, and the diameter of the first pulley is smaller than the diameter of the second pulley.

[0012] Optionally, the clamping mechanism includes a first hollow rotating shaft, a chuck assembly, and a rotary joint;

[0013] The first hollow rotating shaft is rotatably connected to the base plate, and the first hollow rotating shaft is vertically installed through the base plate. The second pulley is connected to the portion of the first hollow rotating shaft located below the base plate, and the chuck assembly is connected to the portion of the first hollow rotating shaft located above the base plate.

[0014] The rotary joint is connected to the lower end of the first hollow rotating shaft, and the rotary joint is connected to an air source or a hydraulic source.

[0015] Optionally, a fixture may be detachably provided on the chuck assembly.

[0016] Optionally, the drive device includes a fixed base, a second servo motor, and a second reduction mechanism;

[0017] The base plate is rotatably mounted on the fixed base. The second servo motor and the second reduction mechanism are both mounted on the fixed base. The second servo motor is connected to the base plate through the second reduction mechanism to drive the base plate to rotate.

[0018] Optionally, a second hollow rotating shaft is provided through the base plate, and the output shaft of the second reduction mechanism is connected to the second hollow rotating shaft to drive the second hollow rotating shaft to rotate;

[0019] The wires connecting the first servo motor and the pipes connecting the clamping mechanism are both sleeved in the second hollow rotating shaft.

[0020] Optionally, the top surface of the base plate is provided with a mounting groove, and the base plate is provided with a through hole, the through hole communicating with the mounting groove;

[0021] The wires connecting the first servo motor and the pipes connecting the clamping mechanism are arranged sequentially along the through hole, the mounting groove, and the second hollow rotating shaft.

[0022] Optionally, a cover plate is provided on the mounting slot.

[0023] Optionally, the dual-station grinding and polishing turntable further includes a partition plate vertically disposed on the top surface of the base plate, the axis of symmetry of the partition plate coinciding with the axis of rotation of the base plate, and the partition plate being arranged between the first working turntable and the second working turntable.

[0024] (III) Beneficial Effects

[0025] The base plate adopts a rotationally symmetrical plate structure. The first and second working turntables are symmetrically arranged around the center of symmetry of the base plate, forming a dual-station structure to improve the stability of the base plate rotation. The drive device drives the base plate to rotate, and the working positions of the first and second working turntables are switched. While the working turntable inside the station is grinding and polishing, the working turntable outside the station is used for loading and unloading operations, which improves work efficiency.

[0026] The rotation axis of the first servo motor and the rotation axis of the clamping mechanism are arranged non-coaxially, which facilitates the installation of the first reduction mechanism between the first servo motor and the clamping mechanism. By using a servo motor and a reduction gear, the requirements for high inertia and high speed grinding and polishing can be met. At the same time, the interference of the first servo motor with the arrangement of the clamping mechanism's pipes can be avoided. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the dual-station grinding and polishing turntable of this utility model;

[0028] Figure 2 This is a schematic diagram of the bottom structure of the dual-station grinding and polishing turntable of this utility model;

[0029] Figure 3 This is a schematic diagram of the working turntable of the dual-station grinding and polishing turntable of this utility model.

[0030] Figure 4 This is a schematic diagram of the drive device for the dual-station grinding and polishing turntable of this utility model.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1: First working turntable; 2: Second working turntable; 11: First servo motor; 12: First reduction mechanism; 13: Clamping mechanism;

[0033] 120: First reduction gear assembly; 121: First pulley; 122: Second pulley; 123: Timing belt;

[0034] 131: First hollow rotating shaft; 132: Chuck assembly; 133: Rotary joint;

[0035] 3: Drive unit; 30: Fixed base; 31: Second servo motor; 32: Second reduction mechanism; 33: Second hollow rotating shaft;

[0036] 4: Base plate; 5: Fixture; 6: Cover plate; 7: Partition plate. Detailed Implementation

[0037] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0038] While exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0039] This utility model provides a dual-station grinding and polishing turntable. It adopts a simple and reliable turntable design and uses a servo motor and reducer to meet the requirements of high inertia and high speed, while greatly improving the rotational stability and accuracy of the turntable itself.

[0040] like Figure 1 and Figure 2 As shown, the dual-station grinding and polishing turntable includes a drive unit 3, a base plate 4 connected to the drive unit 3, and a first working turntable 1 and a second working turntable 2 symmetrically arranged on the base plate 4. The drive unit 3 can drive the base plate 4 to rotate. The base plate 4 adopts a rotationally symmetrical plate structure. The first working turntable 1 and the second working turntable 2 are symmetrically arranged about the center of symmetry of the base plate 4, forming a dual-station structure, which improves the stability of the rotation of the base plate 4. The drive unit 3 drives the base plate 4 to rotate, and the workstations of the first working turntable 1 and the second working turntable 2 switch. While grinding and polishing is performed on the working turntable inside the station, loading and unloading operations are performed on the working turntable outside the station, which improves work efficiency.

[0041] like Figure 1 and Figure 3As shown, both the first working turntable 1 and the second working turntable 2 include a first servo motor 11, a first reduction mechanism 12, and a clamping mechanism 13. The clamping mechanism 13 is a conventional pneumatically or hydraulically driven chuck structure, preferably a three-jaw chuck in this application. The clamping mechanism 13 is rotatably mounted on the top surface of the base plate 4 and is used to clamp the workpiece to be polished and drive it to rotate. The first servo motor 11 and the first reduction mechanism 12 are both mounted on the bottom surface of the base plate 4. The first servo motor 11 is offset from the rotation axis of the clamping mechanism 13, so that the rotation axis of the first servo motor 11 is not coaxial with the rotation axis of the clamping mechanism 13. The first servo motor 11 is connected to the clamping mechanism 13 through the first reduction mechanism 12 to drive the clamping mechanism 13 to rotate. The clamping mechanism 13 is connected to an air source or a hydraulic source through a pipe. The rotation axis of the first servo motor 11 and the rotation axis of the clamping mechanism 13 are arranged non-coaxially, which facilitates the installation of the first reduction mechanism 12 between the first servo motor 11 and the clamping mechanism 13. By using a servo motor and a reduction gear, the requirements for high inertia and high speed grinding and polishing can be met. At the same time, the interference of the first servo motor 11 with the arrangement of the pipes of the clamping mechanism 13 can be avoided.

[0042] like Figure 3 As shown, the first reduction mechanism 12 includes a first reduction assembly 120 and a second reduction assembly connected in sequence. Specifically, the output shaft of the first servo motor 11, the first reduction assembly 120, and the second reduction assembly are connected in sequence. The second reduction assembly is connected to the rotating shaft of the clamping mechanism 13. The sequential connection of the two reduction assemblies makes the output shaft of the first servo motor 11 and the rotating shaft of the clamping mechanism 13 non-axial, providing an installation position for the pipe connection of the clamping mechanism 13. The first servo motor 11 drives the clamping mechanism 13 to rotate after being reduced in speed step by step by the first reduction assembly 120 and the second reduction assembly, so that the rotational speed of the clamping mechanism 13 matches the rotational speed required for grinding.

[0043] Preferably, the first reduction assembly 120 is a reduction gear assembly, the input shaft of which is connected to the output shaft of the first servo motor 11, facilitating a reduction in installation space and allowing direct integration onto the output shaft of the first servo motor 11. The second reduction assembly includes a first pulley 121, a second pulley 122, and a synchronous belt 123. The first pulley 121 is mounted on the output shaft of the reduction gear, and the second pulley 122 is mounted on the rotation shaft of the clamping mechanism 13. The first pulley 121 and the second pulley 122 are connected by the synchronous belt 123, and the diameter of the first pulley 121 is smaller than the diameter of the second pulley 122. The second reduction assembly offsets the motor's rotation shaft through the first pulley 121, the second pulley 122, and the synchronous belt 123, causing the rotation shaft of the first servo motor 11 to be non-axial with the rotation shaft of the clamping mechanism 13.

[0044] like Figure 2 and Figure 3As shown, the clamping mechanism 13 includes a first hollow rotating shaft 131, a chuck assembly 132, and a rotary joint 133. The first hollow rotating shaft 131 is rotatably connected to the base plate 4. The hollow rotating shaft is a tubular structure with open ends, allowing for the installation of pipes in the middle. The first hollow rotating shaft 131 is vertically inserted through the base plate 4. A second pulley 122 is connected to the portion of the first hollow rotating shaft 131 located below the base plate 4, driving the first hollow rotating shaft 131 to rotate. The chuck assembly 132 is connected to the portion of the first hollow rotating shaft 131 located above the base plate 4. Driven by the second pulley 122, the chuck assembly 132 rotates with the first hollow rotating shaft 131. The rotary joint 133 is directly connected to the lower end of the first hollow rotating shaft 131. The rotary joint 133 is a conventional structure used to connect to an air or hydraulic source. Using the first hollow rotating shaft 131 as the installation structure for the air and hydraulic lines simplifies the equipment structure, makes the equipment layout more rational, and reduces the difficulty of assembly and disassembly. Furthermore, a fixture 5 is detachably provided on the chuck assembly 132. The jaws of the chuck assembly are provided with threaded holes for mounting the fixture 5. The fixture 5 can also be replaced according to the size of the workpiece to be ground and polished, thereby improving the flexibility of the product.

[0045] like Figure 4 As shown, the drive device 3 includes a fixed base 30, a second servo motor 31, and a second reduction mechanism 32. The fixed base 30 is installed on the ground or a fixed frame, serving as the mounting foundation for the entire device. The base plate 4 is rotatably mounted on the fixed base 30. Both the second servo motor 31 and the second reduction mechanism 32 are mounted on the fixed base 30. The second reduction mechanism 32 adopts a conventional gearbox structure. The second servo motor 31 is connected to the base plate 4 through the second reduction mechanism 32 to drive the base plate 4 to rotate. The second servo motor 31 precisely controls the rotation angle of the base plate 4, greatly improving the rotational stability and accuracy of the base plate 4 itself. The worktable drives the workpiece to rotate, allowing for indexing and precise orientation. Combined with the spindle, it achieves dual-rotation operation, ensuring polishing quality.

[0046] See Figure 2 and Figure 4 A second central control shaft 33 is installed through the base plate 4. The output shaft of the second reduction mechanism 32 is connected to the second central control shaft 33 to drive the second central control shaft 33 to rotate. The second reduction mechanism 32 deflects the shaft of the second servo motor 31 away from the position of the second central control shaft 33. The wires connecting the first servo motor 11 and the pipes connecting the clamping mechanism 13 are all sleeved in the second central control shaft 33, ensuring that the equipment is clean while the base plate 4 can rotate freely.

[0047] See Figure 1The top surface of the base plate 4 has a mounting groove, and a through hole is provided on the base plate 4, which communicates with the mounting groove. The wires connecting the first servo motor 11 and the pipes connecting the clamping mechanism 13 are arranged sequentially along the through hole, the mounting groove, and the second central control shaft 33. Specifically, the wires and pipes pass through the through hole from the bottom of the base plate 4 and enter the mounting groove, then are arranged along the mounting groove to the position of the second central control shaft 33. They then pass downwards from the top of the second central control shaft 33 and connect to the corresponding air and hydraulic sources. The neat arrangement of pipes and lines avoids damage and entanglement during the rotation of the base plate 4, thus improving the quality of the equipment. Furthermore, a cover plate 6 is provided on the mounting groove to further protect the pipes and lines.

[0048] See Figure 1 The dual-station grinding and polishing turntable also includes a partition 7 vertically arranged on the top surface of the base plate 4. The axis of symmetry of the partition 7 coincides with the axis of rotation of the base plate 4, and the partition 7 is arranged between the first working turntable 1 and the second working turntable 2 to isolate the first working turntable 1 and the second working turntable 2. Together with the external housing, the first working turntable 1 and the second working turntable 2 are in two completely independent spaces to avoid mutual interference. In particular, even if one of the working turntables is performing grinding and polishing operations, it will not affect the loading and unloading operations of the other working turntable.

[0049] This application utilizes two worktables composed of two sets of independent servo motors arranged opposite each other, and a drive unit 3 centrally located and connected to the bottom to form an exchange platform. The exchange platform transports the workpiece from the loading position to the polishing position. Through signal communication with the robot, it achieves linkage and precise positioning. The exchange platform allows for switching between the two worktables, enabling manual loading and unloading operations outside the worktable while polishing is being performed on the worktable inside the station. The worktables drive the workpiece to rotate, allowing for indexing and precise orientation, and work in conjunction with the spindle to achieve dual-rotation operation, ensuring polishing quality.

[0050] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0052] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dual-station grinding and polishing turntable, characterized in that, The dual-station grinding and polishing turntable includes a drive device (3), a base plate (4) connected to the drive device (3), and a first working turntable (1) and a second working turntable (2) symmetrically arranged on the base plate (4). The drive device (3) can drive the base plate (4) to rotate. Both the first work turntable (1) and the second work turntable (2) include a first servo motor (11), a first reduction mechanism (12), and a clamping mechanism (13). The clamping mechanism (13) is rotatably disposed on the top surface of the base plate (4). The first servo motor (11) and the first reduction mechanism (12) are both disposed on the bottom surface of the base plate (4). The rotation axis of the first servo motor (11) is not coaxial with the rotation axis of the clamping mechanism (13). The first servo motor (11) is connected to the clamping mechanism (13) through the first reduction mechanism (12) to drive the clamping mechanism (13) to rotate. The clamping mechanism (13) is connected to an air source or a hydraulic source through a pipe.

2. The dual-station grinding and polishing turntable as described in claim 1, characterized in that, The first deceleration mechanism (12) includes a first deceleration assembly (120) and a second deceleration assembly; The output shaft of the first servo motor (11), the first deceleration assembly (120) and the second deceleration assembly are connected in sequence. The second deceleration assembly is connected to the rotating shaft of the clamping mechanism (13). The output shaft of the first servo motor (11) and the rotating shaft of the clamping mechanism (13) are not coaxial.

3. The dual-station grinding and polishing turntable as described in claim 2, characterized in that, The first reduction assembly (120) is a reduction gear assembly, and the second reduction assembly includes a first pulley (121), a second pulley (122), and a synchronous belt (123); The input shaft of the reduction gear assembly is connected to the output shaft of the first servo motor (11). The first pulley (121) is disposed on the output shaft of the reduction gear, and the second pulley (122) is disposed on the rotation shaft of the clamping mechanism (13). The first pulley (121) and the second pulley (122) are connected by the synchronous belt (123). The diameter of the first pulley (121) is smaller than the diameter of the second pulley (122).

4. The dual-station grinding and polishing turntable as described in claim 3, characterized in that, The clamping mechanism (13) includes a first hollow rotating shaft (131), a chuck assembly (132), and a rotary joint (133); The first hollow rotating shaft (131) is rotatably connected to the base plate (4), and the first hollow rotating shaft (131) is vertically installed through the base plate (4). The second pulley (122) is connected to the part of the first hollow rotating shaft (131) located below the base plate (4), and the chuck assembly (132) is connected to the part of the first hollow rotating shaft (131) located above the base plate (4). The rotary joint (133) is connected to the lower end of the first hollow rotating shaft (131), and the rotary joint (133) is connected to an air source or a hydraulic source.

5. The dual-station grinding and polishing turntable as described in claim 4, characterized in that, A fixture (5) is detachably provided on the chuck assembly (132).

6. The dual-station grinding and polishing turntable as described in claim 1, characterized in that, The drive device (3) includes a fixed base (30), a second servo motor (31), and a second reduction mechanism (32); The base plate (4) is rotatably mounted on the fixed base (30). The second servo motor (31) and the second reduction mechanism (32) are both mounted on the fixed base (30). The second servo motor (31) is connected to the base plate (4) through the second reduction mechanism (32) to drive the base plate (4) to rotate.

7. The dual-station grinding and polishing turntable as described in claim 6, characterized in that, A second central control shaft (33) is provided through the base plate (4), and the output shaft of the second deceleration mechanism (32) is connected to the second central control shaft (33) to drive the second central control shaft (33) to rotate; The wires connecting the first servo motor (11) and the pipes connecting the clamping mechanism (13) are both sleeved in the second central control shaft (33).

8. The dual-station grinding and polishing turntable as described in claim 7, characterized in that, The top surface of the base plate (4) is provided with an installation groove, and the base plate (4) is provided with a through hole, which communicates with the installation groove; The wires connecting the first servo motor (11) and the pipes connecting the clamping mechanism (13) are arranged sequentially along the through hole, the mounting groove and the second central control shaft (33).

9. The dual-station grinding and polishing turntable as described in claim 8, characterized in that, The mounting slot is provided with a cover plate (6).

10. The dual-station grinding and polishing turntable as described in claim 1, characterized in that, The dual-station grinding and polishing turntable also includes a partition (7) vertically disposed on the top surface of the base plate (4). The axis of symmetry of the partition (7) coincides with the axis of rotation of the base plate (4), and the partition (7) is arranged between the first working turntable (1) and the second working turntable (2).

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