Rotary table device with upper table top and lower table top

Abstract

The invention relates to a rotary table device with an upper table top and a lower table top. The rotary table device comprises a table top assembly, a shaft system assembly, a driving and sensing assembly and a base body assembly. The table top assembly comprises an upper table top connector, an upper table top, a lower table top and a lower table top connector; the shafting assembly comprises an upper adapter shaft, a shafting main shaft, an upper bearing module, a lower bearing module, a rotary table angle measuring shaft and a lower adapter shaft; the driving and sensing assembly comprises a rotary table motor module and a rotary table angle measurement module; the base body assembly comprises a rotary table body and a rotary table lower bearing transition seat. The shaft system main shaft is fixed through the upper bearing module and the rotary table lower bearing module. Compared with the prior art, the testing efficiency is high, the upper and lower double-table-board device of the rotary table is arranged, the upper and lower table boards test the same product each time, the rotary table does not need to be trimmed, the rotary table testing process is optimized, the rotary table testing time is shortened, and the rotary table testing efficiency is improved; the method is safe, reliable, low in testing cost and convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of inertial product testing, and in particular to an upper and lower double-table turntable device. Background Art

[0002] Turntables can be generally divided into tabletop turntables and frame-type turntables according to different load installation methods. Tabletop turntables have been widely used in the field of inertial product testing due to their convenient load installation and universal installation tooling. At present, most tabletop turntables at home and abroad are single-tabletop turntables, that is, the load installation axis system has only a single load installation table. After the load is installed, the load counterweight is installed in a symmetrical place to balance the turntable. Since there are many types of turntable test products, the size and weight of each test product are different. Therefore, the single-tabletop turntable needs to be re-balanced each time a different product is tested. For product testing, this increases the turntable test time, increases the turntable test cost, and wastes the turntable test space.

[0003] Patent CN201210102889.5 discloses a three-axis turntable angular position positioning and calibration device. The angle measuring assembly consists of an optical encoder disk and an angle measuring rod. The optical encoder disk is used as a measurement reference. The angle measuring rod is rigidly connected to the outer rotor of the optical encoder disk. The optical encoder disk is fixed to the measured shaft of the turntable through a coupling fixture or fixed to the measured shaft of the turntable. The positioning installation platform is fixed on the turntable base and parallel to the horizontal plane. The measurement reference rod is installed on the positioning installation platform and perpendicular to the horizontal plane. The digital display device is connected to the optical encoder disk through a data transmission cable. During measurement, the angular displacement of the measured shaft is transmitted to the inner rotor of the optical encoder disk through the coupling fixture or transmitted to the optical encoder disk. The photoelectric shaft angle encoder of the optical encoder disk converts the angular displacement into a digital signal, which is then processed and displayed by the digital display device. The measurement accuracy is improved, but the turntable needs to be re-balanced each time a different product is tested, which increases the turntable test time. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide an upper and lower double-table turntable device with high testing efficiency. The upper and lower double-table device of the turntable can test the same product each time, and there is no need to balance the turntable. The turntable testing process is optimized, the turntable testing time is reduced, and the turntable testing efficiency is improved. It is safe and reliable, with low testing cost and easy operation.

[0005] The present invention provides an upper and lower double-table turntable device, comprising: a table assembly, a shaft assembly, a driving and sensing assembly, and a base assembly;

[0006] The table top assembly includes: an upper table top connector, an upper table, a lower table top, and a lower table top connector; the shaft system assembly includes: an upper adapter shaft, a shaft system main shaft, an upper bearing module, a lower bearing module, a turntable angle measurement shaft, and a lower adapter shaft; the drive and sensor assembly includes: a turntable motor module, a turntable angle measurement module; the base assembly includes: a turntable body, a turntable lower bearing transition seat; the shaft system main shaft is fixed by an upper bearing module and a turntable lower bearing module.

[0007] Furthermore, two threading holes are provided in the middle of the main shaft of the shaft system, and external wires can pass through the threading holes to supply power to the upper table connector and the lower table connector at the same time, so that the turntable can install the test product and the bearing transition seat under the turntable at the upper and lower tables at the same time.

[0008] Furthermore, the upper table and the lower table are symmetrical about the center of the turntable body, and the upper table and the lower table have the same weight. Thus, when the same test product is installed on the upper and lower tables, there is no need to perform a balancing operation on the turntable.

[0009] Furthermore, the external power supply wire enters the internal structure of the turntable from the wire holes on the left and right ends of the turntable body, and enters the turntable shaft system from the wire hole at the center of the shaft system main shaft. The wire is divided into two strands, one wire passes through the transfer shaft and the upper table surface on the turntable to supply power to the upper table surface connector; the other wire passes through the turntable angle measurement axis, the lower transfer shaft, and the lower table surface to supply power to the lower table surface connector.

[0010] Furthermore, the upper bearing module includes a pair of angular contact ball bearings installed back to back.

[0011] Furthermore, the lower bearing module includes a pair of angular contact ball bearings installed face to face. Such an axial fixing method can simultaneously bear the axial load and radial load during the operation of the turntable, and can withstand a large overturning moment, which is conducive to precise centering, so that the entire rotating shaft has a higher concentricity relative to the base axis.

[0012] Furthermore, the axis system movement of the turntable device is driven by the turntable motor module, which is a permanent magnet brush torque motor. The brush motor technology is mature, the control is simple, the operation is stable, the starting and braking effects are good, the control accuracy is high, and the high-precision operation of the turntable can be ensured.

[0013] Furthermore, the turntable angle measurement module is used to feed back the turntable angle position. The turntable angle measurement module adopts a domestically produced Shishan angle measurement sensor as an angle sensor with a position accuracy of ±3°.

[0014] Furthermore, during testing, the upper table test product is installed on the upper table, and the lower table test product is installed on the lower table; the upper table connector and the lower table connector respectively supply power to the two loads. The loads are completely symmetrical about the turntable body, so there is no need for balancing, which can improve the turntable test efficiency and reduce the turntable test cost.

[0015] Furthermore, the upper table test product is installed on the upper table through an upper table test product installation block, and the lower table test product is installed on the lower table through a lower table test product installation block.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) High test efficiency: The turntable has two upper and lower tables. The upper and lower tables test the same product each time, and there is no need to balance the turntable. This optimizes the turntable test process, reduces the turntable test time, and improves the turntable test efficiency.

[0018] (2) Safe and reliable: The turntable has two upper and lower surfaces, which optimizes the test process and reduces the risk for test workers to install the balancing mechanism.

[0019] (3) Low testing cost: Compared with the conventional single-table structure, the turntable has two upper and lower tables, which can test more products each time, greatly reducing the testing cost.

[0020] (4) Convenient operation: Compared with the traditional single-table turntable, which has the disadvantage of requiring the turntable axis to be re-balanced each time a different test product is changed, the double-table turntable can install the same product on the upper and lower tables, without the need for balancing, and is simpler to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of an upper and lower double-table turntable device;

[0022] Figure 2 This is a schematic diagram of the structure of the load installation of the present invention.

[0023] Figure numerals: 1. upper table connector, 2. upper table, 3. upper adapter shaft, 4. main shaft of the shaft system, 5. upper bearing module, 6. turntable body, 7. turntable motor module, 8. turntable lower bearing transition seat, 9. lower bearing module, 10. turntable angle measurement module, 11. turntable angle measurement shaft, 12. lower adapter shaft, 13. lower table, 14. lower table connector, 121. upper table test product, 122. upper table test product mounting block, 123. turntable device, 124. lower table test product mounting block, 125. lower table test product. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms and other features not clearly described in this technical solution are all considered to be common technical features disclosed in the prior art.

[0025] Example 1

[0026] This embodiment provides a double-table turntable device, such as Figure 1 As shown, it includes: a table assembly, a shaft assembly, a drive and sensor assembly, and a base assembly;

[0027] The table top assembly includes: an upper table top connector 1, an upper table top 2, a lower table top 13, and a lower table top connector 14; the shaft system assembly includes: an upper adapter shaft 3, a shaft system main shaft 4, an upper bearing module 5, a lower bearing module 9, a turntable angle measurement shaft 11, and a lower adapter shaft 12; the drive and sensor assembly includes: a turntable motor module 7, a turntable angle measurement module 10; the base assembly includes: a turntable body 6, a turntable lower bearing transition seat 8; the shaft system main shaft 4 is fixed by the upper bearing module 5 and the turntable lower bearing module 9.

[0028] In a specific embodiment, two threading holes are provided in the middle of the shaft system main shaft 4, and external wires can pass through the threading holes to supply power to the upper table connector 1 and the lower table connector 14 at the same time, so that the turntable can install the test product and the turntable lower bearing transition seat 8 on the upper and lower tables at the same time.

[0029] In a specific embodiment, the upper table 2 and the lower table 13 are symmetrical about the center of the turntable body 6, and the upper table 2 and the lower table 13 have the same weight. In this way, when the same test product is installed on the upper and lower tables, there is no need to perform a balancing operation on the turntable.

[0030] In a specific implementation, the external power supply wire enters the internal structure of the turntable from the threading holes on the left and right ends of the turntable body 6, and enters the turntable shaft system from the threading hole at the center of the shaft system main shaft 4. The wire is divided into two strands, one wire passes through the upper adapter shaft 3 and the upper table 2 on the turntable to supply power to the upper table connector 1; the other wire passes through the turntable angle measurement shaft 11, the lower adapter shaft 12, and the lower table 13 to supply power to the lower table connector 14.

[0031] In a specific embodiment, the upper bearing module 5 includes a pair of angular contact ball bearings installed back to back.

[0032] In a specific embodiment, the lower bearing module 9 includes a pair of angular contact ball bearings installed face to face. Such an axial fixing method can simultaneously bear the axial load and radial load during the operation of the turntable, and can withstand a large overturning moment, which is conducive to precise centering, so that the entire rotating shaft has a higher concentricity relative to the base axis.

[0033] In a specific embodiment, the axis system movement of the turntable device 123 is driven by the turntable motor module 7, which is a permanent magnet brush torque motor. The brush motor technology is mature, the control is simple, the operation is stable, the starting and braking effects are good, the control accuracy is high, and the high-precision operation of the turntable can be ensured.

[0034] In a specific implementation, the turntable angle measurement module 10 is used to feed back the turntable angle position. The turntable angle measurement module 10 uses a domestically produced Shishan angle measurement sensor as an angle sensor with a position accuracy of ±3°.

[0035] In a specific embodiment, during testing, the upper table test product 121 is installed at the upper table 2, and the lower table test product 125 is installed at the lower table 13; the upper table connector 1 and the lower table connector 14 respectively supply power to the two loads. The loads are completely symmetrical about the turntable body 6, so there is no need for balancing, which can improve the turntable test efficiency and reduce the turntable test cost.

[0036] like Figure 2 As shown, in a specific implementation, the upper table test product 121 is installed at the upper table 2 through the upper table test product mounting block 122, and the lower table test product 125 is installed at the lower table 13 through the lower table test product mounting block 124.

[0037] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0038] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. An upper and lower double-table turntable device, characterized in that: include: Table assembly, shaft assembly, drive and sensor assembly, base assembly; The table assembly comprises: an upper table connector (1), an upper table (2), a lower table (13), and a lower table connector (14); the shaft assembly comprises: an upper adapter shaft (3), a shaft main shaft (4), an upper bearing module (5), a lower bearing module (9), a turntable angle measurement shaft (11), and a lower adapter shaft (12); the drive and sensor assembly comprises: a turntable motor module (7), and a turntable angle measurement module (10); the base assembly comprises: a turntable body (6), and a turntable lower bearing transition seat (8); the shaft main shaft (4) is fixed by an upper bearing module (5) and a turntable lower bearing module (9).

2. The upper and lower double-table turntable device according to claim 1, characterized in that: Two threading holes are arranged in the middle of the shaft system main shaft (4), and external wires can pass through the threading holes to simultaneously power the upper table connector (1) and the lower table connector (14), so that the turntable can simultaneously install the test product and the lower bearing transition seat (8) of the turntable at the upper and lower double tables.

3. The upper and lower double-table turntable device according to claim 1, characterized in that: The upper table surface (2) and the lower table surface (13) are symmetrical about the center of the turntable body (6), and the upper table surface (2) and the lower table surface (13) have the same weight.

4. The upper and lower double-table turntable device according to claim 1, characterized in that: The external power supply wire enters the internal structure of the turntable from the threading holes at the left and right ends of the turntable body (6), and enters the turntable shaft system from the threading hole at the center of the shaft system main shaft (4). The wire is divided into two strands. One strand passes through the upper transfer shaft (3) and the upper table (2) of the turntable to supply power to the upper table connector (1); the other strand passes through the turntable angle measuring shaft (11), the lower transfer shaft (12), and the lower table (13) to supply power to the lower table connector (14).

5. The upper and lower double-table turntable device according to claim 1, characterized in that: The upper bearing module (5) comprises a pair of angular contact ball bearings mounted back to back.

6. The upper and lower double-table turntable device according to claim 1, characterized in that: The lower bearing module (9) comprises a pair of angular contact ball bearings mounted face to face.

7. The upper and lower double-table turntable device according to claim 1, characterized in that: The axis system movement of the turntable device (123) is driven by a turntable motor module (7), and the turntable motor module (7) is a permanent magnet brush torque motor.

8. The upper and lower double-table turntable device according to claim 1, characterized in that: The turntable angle measurement module (10) is used to feed back the turntable angle position. The turntable angle measurement module (10) uses a domestically produced Shishan angle measurement sensor as an angle sensor, and the position accuracy is ±3°.

9. The upper and lower double-table turntable device according to claim 1, characterized in that: During testing, the upper table test product (121) is installed on the upper table (2), and the lower table test product (125) is installed on the lower table (13); the upper table connector (1) and the lower table connector (14) respectively supply power to the two loads.

10. The upper and lower double-table turntable device according to claim 9, characterized in that: The upper table test product (121) is installed on the upper table (2) via an upper table test product installation support block (122), and the lower table test product (125) is installed on the lower table (13) via a lower table test product installation support block (124).

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