Special clamp for numerical control internal grinding machine

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a special fixture for a numerical control internal grinding machine, which comprises a clamping table, a main fixture is fixedly connected to one side of the upper surface of the clamping table, a cooling component is arranged on the surface of the clamping table, and a protective sleeve is fixedly connected to the other side of the upper surface of the clamping table. According to the utility model, through the arrangement of the cooling assembly and the cooperation of the water collecting tank, the water pump, the spray head pipe, the atomizing nozzle and other parts, water or cooling liquid is liquefied into fine particles through the atomizing nozzle, so that the water or the cooling liquid can cover a processing area more uniformly, the cooling effect is improved, and the cooling effect is improved by reducing the temperature of the processing area. According to the clamp, the cooling assembly is arranged, the workpiece deformation risk caused by thermal expansion is effectively reduced, the size precision and the shape precision of the workpiece are ensured, in addition, the working temperature of the clamp can be effectively reduced, the aging and fatigue process of a clamp material is slowed down, the service life of the clamp is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a special fixture for a numerical control internal grinding machine. Background Art

[0002] The numerical control internal grinding machine is one of the indispensable important equipment in modern mechanical processing, mainly used for processing the inner hole surfaces of various parts with high precision and high efficiency.

[0003] During the grinding process of the machine tool, due to the generation and accumulation of cutting heat, the temperature in the processing area will rise rapidly. This high-temperature environment will not only cause thermal deformation of the workpiece, affecting its dimensional and shape accuracy, but also accelerate the aging and fatigue of the fixture material, thus shortening the service life of the fixture. This not only increases the production cost but also may cause instability in the processing quality. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a special fixture for a numerical control internal grinding machine.

[0005] The utility model is realized by the following technical solutions: A special fixture for a numerical control internal grinding machine, including a clamping table, one side of the upper surface of the clamping table is fixedly connected with a main fixture, a cooling component is arranged on the surface of the clamping table, and the other side of the upper surface of the clamping table is fixedly connected with a protective cover;

[0006] The cooling component includes a water collection tank, the bottom of the water collection tank is fixedly connected to the upper surface of the clamping table, a water pump is fixedly installed on the inner bottom wall of the water collection tank through bolts, the output end of the water pump is fixedly connected with a spray pipe, an atomizing nozzle is fixedly connected to the outer surface of the spray pipe, both ends of the spray pipe are sleeved with pipe support seats, the lower surface of the pipe support seats is fixedly connected to the upper surface of the clamping table, and a filling port is opened on the upper surface of the water collection tank.

[0007] Through the above technical solutions, the cooling component can reduce the temperature in the processing area, reduce the deformation of the workpiece caused by thermal expansion, thereby ensuring the dimensional accuracy and shape accuracy of the workpiece. At the same time, it can also reduce the working temperature of the fixture, slow down the aging and fatigue of the fixture material, extend its service life, and reduce the production cost.

[0008] As a further improvement of the above solution, a servo motor is arranged inside the protective cover, and the output end of the servo motor is fixedly connected with a main pulley.

[0009] Through the above technical solutions, the protective cover can provide additional protection for the servo motor, prevent dust, chips and other impurities from entering the motor interior and affecting its normal operation. The servo motor can provide high-precision position control and speed control, thereby realizing precise drive of the main pulley.

[0010] As a further improvement of the above solution, a transmission belt is provided on the outer surface of the main pulley, and the other end of the transmission belt is provided with a secondary pulley.

[0011] Through the above technical solution, the transmission belt can smoothly transmit the power output by the servo motor to the secondary pulley.

[0012] As a further improvement of the above solution, a support shaft seat is fixedly connected to the surface of the secondary pulley, and the lower surface of the support shaft seat is fixedly connected to the upper surface of the clamping table.

[0013] Through the above technical solution, the support shaft seat can provide stable support for the secondary pulley, ensuring its accurate position and direction during operation, thereby guaranteeing the stability and reliability of the transmission system.

[0014] As a further improvement of the above solution, a sliding groove is provided on the surface of the clamping table, and threaded rods are fixedly connected to the surfaces of both the main pulley and the secondary pulley.

[0015] Through the above technical solution, through the synchronous rotation of the pulleys, the linkage control of the main pulley and the secondary pulley can be realized, thereby ensuring the synchronous rotation of the two threaded rods and achieving precise control of the fixture.

[0016] As a further improvement of the above solution, the other end of the threaded rod is rotatably connected to the inner wall of the sliding groove, and a movable frame is provided on the surface of the threaded rod.

[0017] Through the above technical solution, through the cooperation of the threaded rod and the sliding groove, the horizontal movement of the movable frame can be realized, thereby adjusting the position of the movable frame to adapt to the clamping requirements of workpieces of different sizes.

[0018] As a further improvement of the above solution, a secondary fixture is fixedly connected to the surface of the movable frame, and rubber pads are provided on the outer surfaces of both the main fixture and the secondary fixture.

[0019] Through the above technical solution, the movable frame moves along the thread direction of the threaded rod, driving the secondary fixture to move towards the main fixture, thereby adjusting the distance between the two fixtures, and further clamping workpieces of different sizes. The rubber pads have good elasticity, which can increase the friction between the main fixture and the secondary fixture and the workpiece, thereby enhancing the clamping stability and preventing the workpiece from sliding or loosening during the processing.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] The utility model sets up a cooling component. Through the cooperation of components such as a water collecting tank, a water pump, a spray pipe, and atomizing nozzles, water or coolant is liquefied into fine particles through the atomizing nozzles, so that the water or coolant can more evenly cover the processing area, improving the cooling effect. By reducing the temperature of the processing area, the risk of workpiece deformation caused by thermal expansion is effectively reduced, thus ensuring the dimensional accuracy and shape accuracy of the workpiece. In addition, the combined use of the cooling component can also effectively reduce the working temperature of the fixture, slow down the aging and fatigue process of the fixture material, extend the service life of the fixture, and further reduce the production cost. Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the servo motor of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the sliding groove of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the rubber pad of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the cooling component of the utility model.

[0027] Main Symbol Explanation:

[0028] 1. Clamping table; 2. Main fixture; 3. Cooling component; 301. Water collecting tank; 302. Water pump; 303. Spray pipe; 304. Atomizing nozzle; 305. Pipe support seat; 306. Filling port; 4. Protective sleeve; 5. Servo motor; 6. Main pulley; 7. Transmission belt; 8. Auxiliary pulley; 9. Support shaft seat; 10. Sliding groove; 11. Threaded rod; 12. Movable frame; 13. Auxiliary fixture; 14. Rubber pad. Specific Embodiments

[0029] Next, in combination with the drawings and specific embodiments, the utility model will be further described. It should be noted that on the premise of no conflict, the following described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0030] Embodiment:

[0031] Please refer to Figures 1-5 , a special fixture for a numerically controlled internal grinder in this embodiment includes a clamping table 1, a main fixture 2 is fixedly connected to one side of the upper surface of the clamping table 1, a cooling component 3 is arranged on the surface of the clamping table 1, and a protective sleeve 4 is fixedly connected to the other side of the upper surface of the clamping table 1;

[0032] The cooling component 3 includes a water collecting tank 301. The bottom of the water collecting tank 301 is fixedly connected to the upper surface of the clamping table 1. A water pump 302 is fixedly installed on the inner bottom wall of the water collecting tank 301 through bolts. The output end of the water pump 302 is fixedly connected to a spray pipe 303. The outer surface of the spray pipe 303 is fixedly connected with atomizing nozzles 304. Both ends of the spray pipe 303 are sleeved with pipe support seats 305. The lower surface of the pipe support seat 305 is fixedly connected to the upper surface of the clamping table 1. A filling port 306 is opened on the upper surface of the water collecting tank 301. Through the cooperation of components such as the water collecting tank 301, the water pump 302, the spray pipe 303, and the atomizing nozzles 304, the cooling component 3 can spray the coolant into the processing area, quickly take away the heat, thereby maintaining the cooling of the workpiece and ensuring the processing quality. The water collecting tank 301 is used to store the coolant, and the water pump 302 is used to provide power to pump the coolant out of the water collecting tank 301 and transport it to the atomizing nozzles 304 through the spray pipe 303. The atomizing nozzles 304 can atomize the coolant into fine particles, which can cover the processing area more evenly and improve the cooling effect. The pipe support seats 305 are used to fix the spray pipe 303 to ensure its stability and accuracy. The filling port 306 facilitates the addition and replacement of the coolant.

[0033] A servo motor 5 is arranged inside the protective sleeve 4. The output end of the servo motor 5 is fixedly connected to a main pulley 6. The servo motor 5 is a high-precision driving device that can accurately control the rotation angle and speed of its output shaft by receiving control signals. In the fixture system, the servo motor 5 is used to drive the rotation of the main pulley 6, thereby driving the entire transmission system.

[0034] A transmission belt 7 is arranged on the outer surface of the main pulley 6. The other end of the transmission belt 7 is provided with a secondary pulley 8. The output end of the servo motor 5 is fixedly connected to the main pulley 6. The main pulley 6 is connected to the secondary pulley 8 through the transmission belt 7 to form a belt transmission system. When the servo motor 5 rotates, the main pulley 6 rotates accordingly, and drives the secondary pulley 8 to rotate through the transmission belt 7, thereby realizing power transmission.

[0035] A support shaft seat 9 is fixedly connected to the surface of the secondary pulley 8. The lower surface of the support shaft seat 9 is fixedly connected to the upper surface of the clamping table 1. The support shaft seat 9 is used to support and fix the secondary pulley 8 to ensure its stable position and posture during operation. The support shaft seat 9 is fixedly connected to the upper surface of the clamping table 1 through its lower surface to form a stable support structure.

[0036] Sliding grooves 10 are opened on the surface of the clamping table 1. Threaded rods 11 are fixedly connected to the surfaces of both the main pulley 6 and the secondary pulley 8. Through the synchronous rotation of the pulleys, the linkage control of the main pulley 6 and the secondary pulley 8 can be realized, thereby ensuring the synchronous rotation of the two threaded rods 11 and achieving precise control of the fixture.

[0037] The other end of the threaded rod 11 is rotatably connected to the inner wall of the sliding groove 10. An movable frame 12 is arranged on the surface of the threaded rod 11. The movable frame 12 is arranged on the surface of the threaded rod 11 and is in threaded cooperation with the threaded rod 11 to form a movable connection structure. The movable frame 12 can move axially along the threaded rod 11 under the drive of the rotation of the threaded rod 11, so as to realize its horizontal movement in the sliding groove 10.

[0038] A sub-jig 13 is fixedly connected to the surface of the movable frame 12. Rubber pads 14 are arranged on the outer surfaces of the main jig 2 and the sub-jig 13. The movable frame 12 moves along the thread direction of the threaded rod 11, driving the sub-jig 13 to move towards the main jig 2, so as to adjust the distance between the two jigs, and further clamp workpieces of different sizes. The rubber pads 14 have good elasticity, which can increase the friction between the main jig 2 and the sub-jig 13 and the workpiece, thereby enhancing the clamping stability and preventing the workpiece from sliding or loosening during the processing.

[0039] The implementation principle of a special fixture for a numerically controlled internal grinder in the embodiment of the present application is as follows: The operator starts the servo motor 5, and the main pulley 6 and the sub-pulley 8 rotate synchronously under the drive of power. The rotation of the two pulleys drives the two threaded rods 11 to rotate synchronously. The rotation of the threaded rod 11 drives the movable frame 12 to move axially along the threaded rod 11. The movement of the movable frame 12 drives the sub-jig 13 to move towards the main jig 2 to adjust the distance between the two jigs to adapt to workpieces of different sizes. When the distance between the two jigs is adjusted to the appropriate position, the rubber pads 14 provide good elasticity, increase the friction between the fixture and the workpiece, enhance the clamping stability, and prevent the workpiece from sliding or loosening during the processing. During the subsequent grinding process, the operator can start the water pump 302 to pump the coolant out of the water collecting tank 301 and transport it to the atomizing nozzle 304 through the spray pipe 303. The atomizing nozzle 304 can atomize the coolant into fine particles, which can cover the processing area more evenly, improve the cooling effect, reduce the temperature of the processing area, reduce the deformation of the workpiece caused by thermal expansion, thereby ensuring the dimensional accuracy and shape accuracy of the workpiece. At the same time, it can also reduce the working temperature of the fixture, slow down the aging and fatigue of the fixture material, extend its service life, and reduce the production cost.

[0040] The above implementation manners are only the preferred implementation manners of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of protection required by the present invention.

Claims

1. A special fixture for CNC internal grinding machine, characterized in that: It comprises a clamping platform (1), one side of the upper surface of the clamping platform (1) is fixedly connected to a main clamp (2), a surface of the clamping platform (1) is provided with a cooling component (3), and the other side of the upper surface of the clamping platform (1) is fixedly connected to a protective cover (4); The cooling assembly (3) comprises a water collecting tank (301), the bottom of the water collecting tank (301) is fixedly connected to the upper surface of the clamping platform (1), a water pump (302) is fixedly installed on the inner bottom wall of the water collecting tank (301) by means of bolts, the output end of the water pump (302) is fixedly connected to a nozzle pipe (303), the outer surface of the nozzle pipe (303) is fixedly connected to an atomizing nozzle (304), both ends of the nozzle pipe (303) are sleeved with a pipe support seat (305), the lower surface of the pipe support seat (305) is fixedly connected to the upper surface of the clamping platform (1), and a filling port (306) is provided on the upper surface of the water collecting tank (301).

2. A special fixture for CNC internal grinding machine according to claim 1, characterized in that: A servo motor (5) is arranged inside the protective cover (4), and an output end of the servo motor (5) is fixedly connected to a main pulley (6).

3. A special fixture for CNC internal grinding machine as claimed in claim 2, characterized in that: A transmission belt (7) is arranged on the outer surface of the main pulley (6), and a secondary pulley (8) is arranged on the other end of the transmission belt (7).

4. A special fixture for CNC internal grinding machine as claimed in claim 3, characterized in that: The surface of the secondary pulley (8) is fixedly connected to a support shaft seat (9), and the lower surface of the support shaft seat (9) is fixedly connected to the upper surface of the clamping platform (1).

5. A special fixture for CNC internal grinding machine as claimed in claim 2, characterized in that: The surface of the clamping platform (1) is provided with a sliding groove (10), and the surfaces of the main belt pulley (6) and the auxiliary belt pulley (8) are both fixedly connected with a threaded rod (11).

6. A special fixture for CNC internal grinding machine as claimed in claim 5, characterized in that: The other end of the threaded rod (11) is rotatably connected to the inner wall of the sliding groove (10), and a movable frame (12) is provided on the surface of the threaded rod (11).

7. A special fixture for CNC internal grinding machine according to claim 6, characterized in that: A secondary clamp (13) is fixedly connected to the surface of the movable frame (12), and rubber pads (14) are provided on the outer surfaces of the main clamp (2) and the secondary clamp (13).

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