Hydraulic self-centering center frame

Abstract

The utility model discloses a hydraulic self-centering center frame, and relates to the technical field of center frames. The hydraulic self-centering center frame comprises a positioning plate and a bolt, the bottom of the positioning plate is fixedly connected with one end of a vertical rod, the other end of the vertical rod is rotationally installed on an installation block, a limiting mechanism is arranged on the installation block, and the limiting mechanism comprises a gear, clamping teeth, a connecting plate, a spring A and a fixing plate. The gear is in transmission connection with the vertical rod through a connecting shaft, one end of a clamping tooth is slidably inserted into a gear gap of the gear, and a connecting plate is fixedly installed on the clamping tooth. The gear, the clamping teeth and the spring A which are arranged in the limiting mechanism are matched with one another, it can be guaranteed that when the angle of the positioning plate needs to be adjusted according to the type of the lathe, the clamping teeth are pulled out of the gear, after the positioning plate is adjusted, the clamping teeth are clamped into the gaps of the gear again, the positioning plate is limited, and the machining precision is improved. And the whole device is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of center frames, in particular to a hydraulic self-centering center frame. Background Art

[0002] The self-centering center rest is a supporting product for high-precision CNC machine tools such as CNC lathes, turning centers, and grinders. It is used to improve the stress conditions during the processing of slender shafts, crankshafts, and pipe parts. When the self-centering center rest is working, the workpiece is clamped by the claws of the center rest, and the balls on the claws rotate with the workpiece, which can reduce the radial movement of the workpiece, thereby reducing vibration and preventing the workpiece from bending, making it easier to process it.

[0003] According to a disclosed hydraulically driven self-centering center frame (CN214722380U), it includes a fixing assembly and a push rod; the fixing assembly includes a positioning plate and a bolt, the bolt is movably mounted on the slide rails arranged at both ends of the positioning plate by tightening the nut; the push rod includes a positioning pin, the positioning pin is movably mounted at the axis of the outer side of the push rod, and the top of the push rod is fixedly connected with the positioning plate. The hydraulically driven self-centering center frame of the present invention can accurately monitor the working distance through the setting of a position monitoring sensor, and then push the positioning plate fixedly connected to the piston rod and the push rod to the required position to realize the automatic centering function, with a novel structure and outstanding features. However, since the connection between the positioning plate and the bearing is always in a state of friction during the actual use of the center frame, the positioning plate is deformed due to heat and friction after long-term use, which is prone to safety accidents. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a hydraulic self-centering center frame, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical solutions: a hydraulic self-centering center frame, including a positioning plate and a bolt, the bottom of the positioning plate is fixedly connected to one end of the vertical rod, the other end of the vertical rod is rotatably mounted on the mounting block, a limiting mechanism is provided on the mounting block, the limiting mechanism includes a gear, a latch, a connecting plate, a spring A and a fixed plate, the gear is connected to the vertical rod through a connecting shaft, one end of the latch is slidably inserted in the gear gap of the gear, a connecting plate is fixedly installed on the latch, the latch is slidably connected to the surface of the mounting block, a fixed plate is fixedly installed on the mounting block, and the connecting plate and the fixed plate are respectively fixedly connected to the two ends of the spring A.

[0005] Preferably, one end of an L-shaped plate is fixedly mounted on the left side of the positioning plate, and a motor is fixedly mounted on the other end of the L-shaped plate, and the output shaft of the motor is fixedly connected to a rotating wheel, and the rotating wheel is provided in two groups and is connected by a transmission belt, and a moving block is fixedly mounted on the transmission belt, and a fan is rotatably mounted on the moving block, and the output shaft of the fan contacts one end of a friction plate, and the other end of the friction plate is fixedly mounted on the surface of the L-shaped plate. Through the cooperation between the fan and the friction plate, when the CNC machine tool is in a long-term working state, through the cooperation between the motor and the fan, the connection between the positioning plate and the bearing can be fully cooled.

[0006] Preferably, a C-shaped plate is fixedly mounted on the surface of the L-shaped plate, and a convex box is slidably inserted into the C-shaped plate.

[0007] Preferably, a partition net is fixedly mounted on the C-shaped plate and the convex box, and dry ice is arranged in the convex box. The cooling effect of the fan is improved by the cooperation of the convex box, the C-shaped plate, the partition net and the dry ice.

[0008] Preferably, a latch is passed through the C-shaped plate and is slidably connected to the latch, and the latch and the C-shaped plate are fixedly connected to both ends of the spring B respectively.

[0009] Preferably, a card slot is provided on the convex box, and a latch is slidably inserted in the card slot. Through the cooperation between the latch and the card slot, the stability of the convex box and the C-shaped plate during use can be effectively guaranteed.

[0010] The utility model provides a hydraulic self-centering center frame. It has the following beneficial effects:

[0011] (1) According to the mutual cooperation of the gear, the latch and the spring A provided in the limit mechanism in the application, it can be ensured that when the angle of the positioning plate needs to be adjusted according to the model of the lathe, the latch can be pulled out of the gear. When the positioning plate is adjusted, the latch is re-inserted into the gap of the gear to limit the positioning plate and make the whole device more stable.

[0012] (2) The cooperation between the fan, convex box, C-shaped plate and dry ice set in the application can effectively ensure that the heat dissipation effect of the fan is improved during use and the service life of the positioning plate is increased. At the same time, after the dry ice melts, it is convenient for workers to add more. At the same time, the convex box is limited by the pin to ensure that the entire heat dissipation device can be more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement of part A;

[0015] Figure 3 A schematic diagram of the structure of the utility model as a whole from a top view;

[0016] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of part B.

[0017] In the figure: 1. positioning plate; 2. bolt; 3. vertical rod; 4. mounting block; 5. limiting mechanism; 51. gear; 52. latch; 53. connecting plate; 54. spring A; 55. fixing plate; 6. L-shaped plate; 7. motor; 8. rotating wheel; 9. transmission belt; 10. moving block; 11. fan; 12. friction plate; 13. C-shaped plate; 14. convex box; 15. partition net; 16. latch; 17. spring B; 18. slot. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Embodiment 1

[0020] See also Figure 1-4 A hydraulic self-centering center frame includes a positioning plate 1 and a bolt 2. The bottom of the positioning plate 1 is fixedly connected to one end of a vertical rod 3. The other end of the vertical rod 3 is rotatably mounted on a mounting block 4. A limiting mechanism 5 is provided on the mounting block 4. The limiting mechanism 5 includes a gear 51, a latch 52, a connecting plate 53, a spring A54 and a fixing plate 55. The gear 51 is transmission-connected to the vertical rod 3 through a connecting shaft. One end of the latch 52 is slidably inserted in the gear gap of the gear 51. A connecting plate 53 is fixedly installed on the latch 52. The latch 52 is slidably connected to the surface of the mounting block 4. A fixing plate 55 is fixedly installed on the mounting block 4. The connecting plate 53 and the fixing plate 55 are respectively fixedly connected to both ends of the spring A54. Next, one end of an L-shaped plate 6 is fixedly installed on the left side of the positioning plate 1, and a motor 7 is fixedly installed on the other end of the L-shaped plate 6. The output shaft of the motor 7 is fixedly connected to a rotating wheel 8. Two groups of rotating wheels 8 are provided and are connected through a transmission belt 9. A moving block 10 is fixedly installed on the transmission belt 9, and a fan 11 is rotatably installed on the moving block 10. The output shaft of the fan 11 contacts one end of a friction plate 12, and the other end of the friction plate 12 is fixedly installed on the surface of the L-shaped plate 6. Through the mutual cooperation of the fan 11 and the friction plate 12, when the CNC machine tool is in a long-term working state, the connection between the positioning plate 1 and the bearing can be fully cooled through the mutual cooperation of the motor 7 and the fan 11.

[0021] During use, when it is necessary to adjust the angle of the positioning plate 1, after pulling the latch tooth 52 out of the tooth gap of the gear 51, the positioning plate 1 is rotated to drive the positioning plate 1 to rotate. When the angle of the positioning plate 1 is adjusted, the latch tooth 52 is inserted into the gear 51 again, and the latch tooth 52 is completely inserted into the gear gap of the gear 51 through the elasticity of the spring A54. At the same time, during the use of the center frame, the motor 7 is started, and the reciprocating rotation of the motor 7 drives the moving block 10 to move up and down. During the movement of the moving block 10, friction is generated between the output shaft of the fan 11 and the friction plate 12, driving the fan 11 to rotate, so that during the up and down movement of the fan 11, the positioning plate 1 and the bearing are fully cooled, thereby improving the service life of the center frame.

[0022] Embodiment 2

[0023] See also Figure 1-4 On the basis of the first embodiment, a C-shaped plate 13 is fixedly installed on the surface of the L-shaped plate 6, a convex box 14 is slidably inserted in the C-shaped plate 13, a partition 15 is fixedly installed on the C-shaped plate 13 and the convex box 14, dry ice is arranged in the convex box 14, a latch 16 runs through the C-shaped plate 13 and is slidably connected with the latch 16, the latch 16 and the C-shaped plate 13 are respectively fixedly connected to the two ends of the spring B17, a slot 18 is provided on the convex box 14, and the latch 16 is slidably inserted in the slot 18. Through the mutual cooperation of the latch 16 and the slot 18, the stability of the convex box 14 and the C-shaped plate 13 during use can be effectively guaranteed.

[0024] During use, based on the first embodiment, when the fan 11 moves up and down to dissipate heat, the temperature of the air blown by the fan 11 is reduced by the dry ice arranged in the convex box 14, and the wind blows toward the positioning plate 1 through the partition net 15 to improve the cooling effect. When new dry ice needs to be placed, the latch 16 is pulled out from the slot 18 of the convex box 14 and the convex box 14 is pulled out.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic self-centering center frame, comprising a positioning plate (1) and a bolt (2), characterized in that: The bottom of the positioning plate (1) is fixedly connected to one end of the vertical rod (3), and the other end of the vertical rod (3) is rotatably mounted on the mounting block (4). A limiting mechanism (5) is provided on the mounting block (4), and the limiting mechanism (5) comprises a gear (51), a latch tooth (52), a connecting plate (53), a spring A (54) and a fixing plate (55). The gear (51) is transmission-connected to the vertical rod (3) via a connecting shaft, and one end of the latch tooth (52) is slidably inserted into a gear gap of the gear (51). A connecting plate (53) is fixedly mounted on the latch tooth (52), and the latch tooth (52) is slidably connected to the surface of the mounting block (4). A fixing plate (55) is fixedly mounted on the mounting block (4), and the connecting plate (53) and the fixing plate (55) are respectively fixedly connected to two ends of the spring A (54).

2. A hydraulic self-centering steady rest according to claim 1, characterized in that: One end of an L-shaped plate (6) is fixedly mounted on the left side of the positioning plate (1), and a motor (7) is fixedly mounted on the other end of the L-shaped plate (6). The output shaft of the motor (7) is fixedly connected to a rotating wheel (8). The rotating wheel (8) is provided with two groups and is connected by a transmission belt (9). A moving block (10) is fixedly mounted on the transmission belt (9), and a fan (11) is rotatably mounted on the moving block (10). The output shaft of the fan (11) contacts one end of a friction plate (12), and the other end of the friction plate (12) is fixedly mounted on the surface of the L-shaped plate (6).

3. A hydraulic self-centering steady rest according to claim 2, characterized in that: A C-shaped plate (13) is fixedly mounted on the surface of the L-shaped plate (6), and a convex box (14) is slidably inserted into the C-shaped plate (13).

4. A hydraulic self-centering steady rest according to claim 3, characterized in that: A partition net (15) is fixedly mounted on both the C-shaped plate (13) and the convex box (14), and dry ice is arranged in the convex box (14).

5. The hydraulic self-centering steady rest according to claim 4, characterized in that: A latch pin (16) passes through the C-shaped plate (13) and is slidably connected to the latch pin (16); the latch pin (16) and the C-shaped plate (13) are respectively fixedly connected to two ends of a spring B (17).

6. A hydraulic self-centering steady rest according to claim 5, characterized in that: The convex box (14) is provided with a slot (18), and a latch (16) is slidably inserted into the slot (18).

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