Automatic rotating device capable of automatically loosening high-precision grinding head of vertical grinding machine

Abstract

The utility model discloses a vertical grinder high-precision grinding head automatic rotating device capable of automatically loosening, which belongs to the technical field of high-precision grinding head automatic rotating devices and comprises a servo motor, a driving gear, a driven gear, a high-precision servo speed reducer, an angle encoder, a rotating plate, a base, an oil cylinder body, a piston rod, a belleville spring, a flat key and an oil pipe joint. The oil cylinder body is connected with the piston rod through the belleville spring, the second piston rod sealing ring and the first piston rod sealing ring, and the oil cylinder body assembly is fixedly connected to the base through the end cover and screws. The grinding head automatic turning device is advanced and reasonable in structure and stable in working performance, the rigidity and the impact resistance of external factors of the grinding head automatic turning device of the vertical grinding machine are enhanced, and the failure rate is greatly reduced. The service life of the grinding head rotating device of the vertical grinding machine is effectively prolonged, market competitiveness is effectively improved, and the high-rigidity and high-load grinding function of the vertical grinding machine is expanded.

Description

Technical Field

[0001] This utility model relates to the technical field of high-precision grinding head automatic rotation device, and in particular to a high-precision grinding head automatic rotation device for a vertical grinding machine that can automatically release. Background Technology

[0002] Existing technical solutions: such as Figure 1 and Figure 2 .

[0003] The existing vertical grinding machine has an automatic grinding head rotation and automatic hydraulic clamping device (as shown in the attached document). Figure 1 Appendix Figure 2 As shown), it comprises a servo motor 1, a worm gear 8 assembly, a worm gear 9 assembly, a rotary plate 19 assembly, a base 20 assembly, and an angle encoder 25. The worm gear 8 assembly is equipped with a set of angular contact bearings 7, a sleeve 6, a nut 4, and a nut 3; the worm gear 9 assembly is equipped with a linear bearing 11, a sleeve 14, a sleeve 13, and a clamping nut 15; the rotary plate 19 assembly is equipped with a turntable bearing 29, an adjusting plate 22, a worm gear 30, and a centering shaft 26; the base 20 assembly is equipped with an elastic brake pad 32, a hydraulic cylinder shaft 23, an elastic clamping hydraulic cylinder body 33, and a mounting base 28. The hydraulic cylinder shaft 23 is equipped with a sealing ring 34, a sealing ring 39, and a retainer 24; the rotary plate 19 assembly and the base 20 assembly are connected by the brake pad 32, the turntable bearing 29, and the rotary sealing ring 35, respectively, and are secured with screws; the rotary plate 19... The components are connected to the base 20 via the adjusting plate 27 and the angle encoder 25, and are secured with nuts 37; the worm gear 8 component is connected to the base 20 via the pressure cap 5 and is secured with screws; the worm gear 8 component and the worm gear 9 component are connected via the pressure cap 16 and are secured with screws 18; the worm gear 9 component is connected to the base 20 via the sleeve 13 and is supported by bolts 12; the servo motor 1 is connected to the worm gear 8 component via the coupling 2 and is secured with screws; the rotary plate 19 is equipped with a baffle 21; the base 20 is equipped with a baffle 31, a positioning sleeve 38, a positioning shaft 36, and an oil level indicator 10; the elastic clamping cylinder body 33 is equipped with an extension joint 40.

[0004] The working principle of the automatic rotation and automatic hydraulic clamping device of the grinding head of the existing vertical grinding machine is as follows: The operator connects one end of the oil pipe to port A of the two-position four-way solenoid valve on the hydraulic oil tank and the other end to the extension connector 40. After the connection is completed, the oil pump is started and the pressure is adjusted to the range of 65-80 Bar. Port A of the two-position four-way solenoid valve is working (oil is flowing). The diaphragm of the elastic clamping cylinder 33 expands to a certain displacement and contacts the elastic brake pad 32, forcing the elastic brake pad 32 to deform and fully contact the friction surface of the base 20, generating friction. This causes the rotating plate 19 to be tightly attached to the base 20 through the brake pad 32 and fixed in place, thereby fixing the grinding head mounted on the rotating plate 19. When the grinding head needs to automatically rotate to a certain angle, the two-position four-way solenoid valve is energized, and port B of the two-position four-way solenoid valve operates. The pressure in the elastic clamping cylinder 33 is released to the oil tank, and the diaphragm of the elastic clamping cylinder 33 elastically contracts to its original position. Since there is no external pressure, the elastic brake pad 32 also contracts to its original position. Thus, there are gaps between the elastic brake pad 32, the elastic clamping cylinder 33, and the base 20. The servo motor 1 starts and drives the worm 8 and worm 9 to rotate through the coupling 2, which in turn drives the worm wheel 30 to rotate, thereby causing the grinding head on the rotary plate 19 to rotate. When the grinding head on the rotary plate 19 rotates to a certain angle, the angle encoder 25 sends a signal, the servo motor 1 stops, the two-position four-way solenoid valve is de-energized, and hydraulic oil quickly enters the elastic clamping cylinder 33, forcing the elastic brake pad 32 to deform and fully contact the friction surface of the base 20, generating friction. This causes the rotary plate 19 to be tightly pressed against the base 20 by the brake pad 32 and fixed in place, thereby fixing the grinding head mounted on the rotary plate 19. The action of clamping and fixing the rotary plate 19 until it is released and rotates is repeated cyclically.

[0005] In existing technologies, the grinding head rotation on a rotary plate is achieved by a servo motor driving a high-precision worm gear, requiring high precision in both the worm gear and its installation position. However, the manufacturing process for the worm gear is complex and costly. Accidental tool collisions during grinding head rotation can lead to jamming, as the worm gear, made of soft copper, is easily damaged. Hydraulic clamping after the grinding head has rotated a certain angle requires a constantly high-pressure oil pump, resulting in high power consumption, heat generation, and environmental pollution. Hydraulic clamping relies on friction generated by high-pressure hydraulic clamping to prevent rotation, but this clamping method is susceptible to external factors (such as pressure fluctuations), leading to unstable grinding head fixation and affecting normal operation. These technologies are complex and difficult to manufacture. Therefore, we propose an automatic high-precision grinding head rotation device for vertical grinding machines that can automatically release the clamping mechanism to solve this problem. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic rotation device for a high-precision grinding head of a vertical grinding machine that can automatically release, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An automatic rotation device for a high-precision grinding head of a vertical grinding machine that can automatically release includes: a servo motor, a drive gear, a driven gear, a high-precision servo reducer, an angle encoder, a rotary plate, a base, a cylinder body, a piston rod, a disc spring, a flat key, and an oil pipe connector. The cylinder body is connected to the piston rod via a disc spring, a second piston rod sealing ring, and a first piston rod sealing ring. The cylinder body assembly is fixedly connected to the base via end caps and screws. The upper surface of the cylinder body and the upper surface of the base are assembled from two parts and machined in one operation.

[0009] Preferably, the rotary plate is fixedly connected to the base by screws via a second adjusting plate, a high-precision servo reducer, and a sealing protective cover. The sealing protective cover and the base are in clearance fit, and the second adjusting plate is used to adjust the clearance between the rotary plate and the high-precision servo reducer.

[0010] Preferably, the rotary plate is fixed to the base via a signal shaft, an adjustment plate, an angle encoder, and a clamping nut. The adjustment plate is used to adjust the gap between the angle encoder and the signal shaft.

[0011] Preferably, a washer and a second clamping nut are movably mounted on the piston rod, and a second cover plate and a first cover plate are mounted on the rotary plate.

[0012] Preferably, the servo motor is fixedly mounted with a third adjusting plate, a drive gear, and a tensioning sleeve by screws. The third adjusting plate is used to adjust the meshing width between the drive gear and the driven gear. The servo motor assembly is fixedly mounted on the base by screws.

[0013] Preferably, an oil pipe connector is movably mounted on the end cap, the flat key is movably mounted on the base, a T-slot is provided on the rotary plate, a piston rod, a second clamping nut, and a washer are provided in the T-slot, a press-fit type oil injection cup is installed on the base, and an oil groove is provided on the contact surface between the base and the rotary plate.

[0014] In this invention, the automatic rotation device for a high-precision grinding head of a vertical grinding machine, capable of automatic release, features a large mechanical clamping force on the rotating plate when the grinding head is working after the grinding head has stopped rotating. This clamping performance is stable, impact-resistant, and less affected by external factors, resulting in high grinding head rigidity. During grinding, the rotating plate is in a static clamping state, held by the mechanical elastic tension generated by the disc spring itself when the oil pump stops, requiring no external energy consumption. When the grinding head is not performing grinding, it rotates to a certain angle after the oil pump is turned on. Due to the short time required and low external energy consumption, the entire process is energy-efficient and environmentally friendly.

[0015] This invention discloses an automatic rotation device for a high-precision grinding head on a vertical grinding machine that can automatically release. It features a simplified structure, low manufacturing cost, long service life, smooth rotation, and high efficiency. Operation is simple and safe, improving the vertical grinding machine's resistance to external impacts and its market competitiveness. It also avoids damage to the rotation device due to misoperation during the automatic rotation of the grinding head, thus significantly reducing the failure rate of the automatic rotation device and protecting operator safety.

[0016] This utility model features a reasonable structural design. It utilizes a servo motor to drive gears and a high-precision cycloidal reducer, resulting in high rotational accuracy, simple manufacturing, convenient adjustment, and stable performance. The rotary plate is clamped using the mechanical elastic force generated by the disc spring itself, providing a large, stable, and reliable clamping force with minimal external interference, strong impact resistance, and safe and reliable operation. The oil pressure required for the grinding head to rotate exceeds the elastic force of the disc spring, compressing it and allowing the rotary plate to rotate. This results in short rotation time, low energy consumption, and no external energy consumption during plate fixing, ensuring reliable clamping performance and energy efficiency. An angle encoder base is mounted on the rotary plate, with the encoder's signal shaft mounted on the base via a long positioning shaft, facilitating easy assembly and disassembly and enhancing maintainability. Furthermore, the entire device boasts an advanced and reasonable structure with stable operation, enhancing the rigidity and impact resistance of the automatic grinding head rotation device on vertical grinders, significantly reducing the failure rate. This effectively improves the service life and market competitiveness of the grinding head rotation device on vertical grinders and expands the high-rigidity, high-load grinding capabilities of vertical grinders. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an existing technical solution;

[0018] Figure 2 A cross-sectional view (AA) of the structural schematic diagram of the existing technical solution;

[0019] Figure 3 This is a schematic diagram of the structure of the present invention and utility model;

[0020] Figure 4This is a cross-sectional view of the present invention and utility model.

[0021] In the diagram: 1. Rotary plate; 2. Sealing protective cover; 3. Press-fit oil cup; 4. Base; 5. No. 1 cover plate; 6. Angle encoder; 7. Transmitting shaft; 8. No. 1 clamping nut; 9. No. 1 adjusting plate; 10. No. 2 adjusting plate; 11. No. 2 cover plate; 12. Piston rod; 13. No. 2 clamping nut; 14. Gasket; 15. No. 1 piston rod sealing ring; 16. Cylinder body; 17. Disc spring; 18. No. 2 piston rod sealing ring; 20. End cap; 21. Oil pipe connector; 22. Flat key; 23. High-precision servo reducer; 24. Driven gear; 25. Drive gear; 26. Tensioning sleeve; 27. No. 3 adjusting plate; 28. Servo motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 An automatic rotation device for a high-precision grinding head of a vertical grinding machine that can automatically release its components includes: a servo motor 28, a drive gear 25, a driven gear 24, a high-precision servo reducer 23, an angle encoder 6, a rotary plate 1, a base 4, a cylinder body 16, a piston rod 12, a disc spring 17, a flat key 22, and an oil pipe connector 21. The cylinder body 16 is connected to the piston rod 12 via the disc spring 17, a second piston rod sealing ring 18, and a first piston rod sealing ring 15. The cylinder body 16 assembly is fixedly connected to the base 4 via an end cap 20 and screws. The upper surface of the cylinder body 16 and the upper surface of the base 4 are assembled from two parts and machined in one operation.

[0024] In this embodiment, the rotary plate 1 is fixedly connected to the base 4 by screws through the second adjusting piece 10, the high-precision servo reducer 23, and the sealing protective cover 2. The sealing protective cover 2 and the base 4 are in clearance fit. The second adjusting piece 10 is used to adjust the gap between the rotary plate 1 and the high-precision servo reducer 23, so as to facilitate the adjustment of the gap between the rotary plate 1 and the high-precision servo reducer 23.

[0025] In this embodiment, the rotary plate 1 is fixed to the base 4 via the signal shaft 7, the first adjustment piece 9, the angle encoder 6, and the first clamping nut 8. The first adjustment piece 9 is used to adjust the gap between the angle encoder 6 and the signal shaft 7, making it convenient to adjust the gap between the angle encoder 6 and the signal shaft 7.

[0026] In this embodiment, a washer 14 and a second clamping nut 13 are movably mounted on the piston rod 12. A second cover plate 11 and a first cover plate 5 are mounted on the rotary plate 1. The servo motor 28 is fixedly mounted with a third adjusting plate 27, a drive gear 25, and a tensioning sleeve 26 by screws. The third adjusting plate 27 is used to adjust the meshing width between the drive gear 25 and the driven gear 24. The servo motor 28 assembly is fixedly mounted on the base 4 by screws for easy fixation of the servo motor 28 assembly.

[0027] In this embodiment, an oil pipe connector 21 is movably installed on the end cap 20, the flat key 22 is movably installed on the base 4, a T-slot is opened on the rotary plate 1, and a piston rod 12, a second clamping nut 13, and a washer 14 are located in the T-slot. A press-fit type oil cup 3 is installed on the base 4, and an oil groove is provided on the contact surface between the base 4 and the rotary plate 1 to lubricate the rotary contact surface of the rotary plate 1.

[0028] In this embodiment, during use, the servo motor 28 is connected to an external power source, and the oil pipe connector 21 is connected to the oil pump on the hydraulic oil tank through the oil pipe. When the oil pump is started, oil flows into the cylinder body 16. When the oil pressure reaches 60 Bar, the oil pressure force acting on the lower end face of the piston rod 12 is 2.3T, which is greater than the elastic force of the disc spring 17 (1.8-2T). The piston rod 12 extends, and the second clamping nut 13 and the washer 14 are in a free state with the base 4, that is, there is no force between the rotating plate 1 and the base 4. When the servo motor 28 receives the CNC system command to rotate the grinding head, the servo motor 28 rotates and drives the driven gear 24 through the driving gear 25. The eccentric shaft of the high-precision servo reducer 23, which is fixed to the driven gear 24, rotates in the opposite direction to the rotation direction of the servo motor 28. The eccentric shaft of the high-precision servo reducer 23 is driven to rotate through the curve plate of the high-precision servo reducer 23. The rotary plate 1, which is connected to the frame of the high-precision servo reducer 23, rotates accordingly. The rotation direction of the rotary plate 1 is opposite to the rotation direction of the eccentric shaft of the high-precision servo reducer 23, but the same as the rotation direction of the servo motor 28. When the grinding head on the rotary plate 1 rotates to the rotation angle position signaled by the angle encoder 6, the servo motor 28 receives a stop CNC command and stops rotating. At this time, the oil pump stops working, the oil in the cylinder body 16 is depressurized and drained into the hydraulic oil tank, and the disc spring 17 drives the piston rod back to its original position due to its own elastic force (1.8-2T), thus stopping the grinding head of the rotary plate 1. This cycle of rotation and stopping of the rotary plate 1 continues.

[0029] The above provides a detailed description of the automatic rotation device for a high-precision grinding head of a vertical grinding machine that can automatically release. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high-precision grinding head automatic rotation device for an automatic release vertical grinder, characterized in that, It includes: Servo motor (28), driving gear (25), driven gear (24), high-precision servo reducer (23), angle encoder (6), rotary plate (1), base (4), oil cylinder body (16), piston rod (12), disc spring (17), flat key (22) and oil pipe joint (21), the oil cylinder body (16) is connected with the piston rod (12) through the disc spring (17), the second piston rod sealing ring (18) and the first piston rod sealing ring (15), the oil cylinder body (16) assembly is fixedly connected on the base (4) through the end cover (20) by screws, and the upper plane of the oil cylinder body (16) and the upper plane of the base (4) are machined by assembling twice.

2. The automatic release vertical grinder high-precision grinding head automatic rotation device according to claim 1, characterized in that, The rotary plate (1) is fixedly connected on the base (4) through the second adjusting piece (10), the high-precision servo reducer (23) and the sealing protective cover (2) by screws, the sealing protective cover (2) is in clearance fit with the base (4), and the second adjusting piece (10) is used for adjusting the clearance between the rotary plate (1) and the high-precision servo reducer (23).

3. The automatic release vertical grinder high-precision grinding head automatic rotation device according to claim 1, characterized in that, The rotary plate (1) is fixed with the base (4) through the signaling shaft (7), the first adjusting piece (9), the angle encoder (6) and the first split nut (8), and the first adjusting piece (9) is used for adjusting the clearance between the angle encoder (6) and the signaling shaft (7).

4. The automatic release vertical grinder high-precision grinding head automatic rotation device according to claim 1, characterized in that, The piston rod (12) movably installs the gasket (14) and the second split nut (13), and the rotary plate (1) movably installs the second cover plate (11) and the first cover plate (5).

5. The automatic release vertical grinder high-precision grinding head automatic rotation device according to claim 1, characterized in that, The servo motor (28) movably installs the third adjusting piece (27), the driving gear (25) and the expansion sleeve (26) by screws, respectively, the third adjusting piece (27) is used for adjusting the meshing width of the driving gear (25) and the driven gear (24), and the servo motor (28) assembly is fixedly installed on the base (4) by screws.

6. The automatic release vertical grinder high-precision grinding head automatic rotation device according to claim 1, characterized in that, The end cover (20) movably installs the oil pipe joint (21), the flat key (22) is movably installed on the base (4), the rotary plate (1) is provided with a T-shaped groove, the piston rod (12) and the second split nut (13) and the gasket (14) are arranged in the T-shaped groove, the base (4) is provided with a press-fit type pressure injection oil cup (3), and the contact surface of the base (4) and the rotary plate (1) is provided with an oil groove.

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