Crankcase blank machining and positioning device

Abstract

The utility model relates to the technical field of positioning devices, and discloses a crankcase blank machining positioning device which solves the problems that when the height of a clamping plate of an existing positioning device is adjusted, a bolt needs to be manually rotated, operation is very inconvenient, the labor amount of workers is increased, and working efficiency is reduced. Mounting cylinders are arranged at the two ends of the top of the workbench, moving columns are inserted into the mounting cylinders, racks are fixedly mounted on the sides, away from each other, of the two moving columns, two sliding blocks are fixedly mounted at the bottoms of the two mounting cylinders, four sliding grooves are formed in the upper surface of the workbench, and the four sliding blocks are slidably mounted in the four sliding grooves; clamping plates are fixedly mounted at the tops of the two moving columns, supporting frames are fixedly mounted at the two ends of the workbench, and air cylinders are fixedly mounted on the sides, close to each other, of the two supporting frames; according to the positioning device, the height of the clamping plate can be rapidly and conveniently adjusted, the labor amount of workers is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of positioning device technology, specifically a positioning device for crankcase blank processing. Background Technology

[0002] A crankcase blank machining positioning device is used to determine the required position of the crankcase blank during machining. This device plays a crucial role in the machining process of the crankcase blank, ensuring the stability and accuracy of the blank during machining, thereby improving machining efficiency and product quality. An existing patent (publication number: CN220613913U) describes a positioning device for crankcase machining. The positioning structure of this device facilitates position and height adjustments for crankcases of different specifications, significantly improving adjustment convenience. However, adjusting the height of the clamping plate requires manually rotating bolts, which is inconvenient, increases the workload of workers, and reduces work efficiency. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a crankcase blank machining positioning device, which effectively solves the problem that the existing positioning device requires manual rotation of bolts when adjusting the height of the clamping plate, which is very inconvenient to operate, increases the workload of workers, and reduces work efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a crankcase blank machining positioning device, comprising a worktable, mounting cylinders at both ends of the top of the worktable, movable columns inserted inside the mounting cylinders, racks fixedly mounted on the sides of the two movable columns that are far apart from each other, two sliders fixedly mounted at the bottom of the two mounting cylinders, four sliding grooves on the upper surface of the worktable, the four sliders slidably mounted inside the four sliding grooves, clamping plates fixedly mounted on the tops of the two movable columns, support frames fixedly mounted at both ends of the worktable, cylinders fixedly mounted on the sides of the two support frames that are close to each other, the transmission ends of the two cylinders being fixedly connected to the two mounting cylinders respectively, a support plate fixedly mounted on one side of the top of the worktable, a drive motor fixedly mounted on the upper part of one side of the support plate, a transmission assembly provided at the output end of the drive motor, the transmission assembly being connected to the two clamping plates, and when the drive motor is running, power is output to the two clamping plates through the transmission assembly, causing the two clamping plates to move and adjust their height.

[0005] Preferably, the transmission assembly includes a drive sprocket, which is fixedly installed at the output end of the drive motor. A driven sprocket is provided on one side of the drive sprocket. A chain meshes between the driven sprocket and the drive sprocket. A positioning frame is rotatably installed on the side of the driven sprocket away from the drive motor. One end of the positioning frame is fixedly connected to a support plate. A rotating cylinder is fixedly installed in the middle of the driven sprocket. Two bushings are rotatably installed on the surface of the rotating cylinder. The lower parts of the two bushings are fixedly connected to the top of the worktable through mounting rods.

[0006] Preferably, two transmission rods are inserted into the inside of the rotating cylinder, and two limiting strips are fixedly installed on the surface of each of the two transmission rods. Two limiting grooves are symmetrically opened inside the rotating cylinder, and four limiting strips are slidably installed inside the two limiting grooves respectively. A drive bevel gear is fixedly installed at the ends of the two transmission rods that are far apart from each other. A bearing is rotatably installed on the surface of each of the two transmission rods, and the two bearings are fixedly connected to the two mounting cylinders through connectors.

[0007] Preferably, a driven bevel gear is meshed with one side of the surface of the driving bevel gear, a rotating rod is fixedly installed on one side of the driven bevel gear, a rotating sleeve is rotatably installed on the surface of the rotating rod, the surfaces of the two rotating sleeves are fixedly connected to two mounting cylinders respectively, a transmission gear is fixedly installed at one end of the rotating rod, a positioning seat is rotatably installed at the end of the transmission gear away from the rotating rod, the sides of the two positioning seats that are close to each other are fixedly connected to the two mounting cylinders respectively, and one side of the two transmission gears is meshed with two racks respectively.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the operator starts the drive motor to drive the active sprocket to rotate along the positioning frame. When the active sprocket rotates, it drives the driven sprocket to rotate through the chain. When the driven sprocket rotates, it drives the rotating cylinder to rotate along the inside of the bushing. When the rotating cylinder rotates, it drives the two transmission rods to rotate along the inside of the two bearings through the cooperation of the limiting strip and the limiting groove. When the two transmission rods rotate, they drive the driven bevel gear to rotate through the active bevel gear.

[0009] When the driven bevel gears rotate, they both drive the rotating rods to rotate inside the rotating sleeve. The rotation of both rotating rods drives the transmission gears to rotate along the positioning seat. The rotation of the transmission gears, in turn, drives the moving columns to move upwards along the inside of the mounting cylinder via the rack. The upward movement of the two moving columns allows the clamping plates to move upwards to adjust the height. During positioning, the operator activates two cylinders to push the two mounting cylinders to move towards each other. As the two mounting cylinders move, they both drive the sliders to slide inside the slide grooves, increasing the stability of the mounting cylinder movement. The two moving columns then drive the two clamping plates to move towards each other, clamping and positioning the crankshaft blank. This positioning device allows for quick and convenient adjustment of the clamping plate height, reducing the workload of the operators and improving work efficiency. Attached Figure Description

[0010] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0011] In the attached diagram:

[0012] Figure 1 This is a schematic diagram of the crankcase blank machining positioning device of this utility model. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the crankcase blank machining positioning device of this utility model. Figure 2 ;

[0014] Figure 3 This is a schematic diagram of the internal structure of the mounting cylinder of this utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the rotating cylinder of this utility model;

[0016] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0017] In the diagram: 1. Workbench; 2. Mounting cylinder; 3. Moving column; 4. Rack; 5. Slider; 6. Slide groove; 7. Clamping plate; 8. Support frame; 9. Cylinder; 10. Support plate; 11. Drive motor; 12. Drive sprocket; 13. Positioning frame; 14. Driven sprocket; 15. Rotating cylinder; 16. Bushing; 17. Transmission rod; 18. Bearing; 19. Driven bevel gear; 20. Driven bevel gear; 21. Rotating rod; 22. Rotating sleeve; 23. Transmission gear; 24. Positioning seat; 25. Chain; 26. Limiting strip; 27. Limiting groove. Detailed Implementation

[0018] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Depend on Figures 1 to 5The present invention includes a workbench 1, with mounting cylinders 2 at both ends of the top of the workbench 1. Movable columns 3 are inserted into the interior of each mounting cylinder 2. A rack 4 is fixedly installed on the side of each movable column 3 that is far apart from each other. Two sliders 5 are fixedly installed at the bottom of each mounting cylinder 2. Four sliding grooves 6 are formed on the upper surface of the workbench 1, and the four sliders 5 are slidably installed inside the four sliding grooves 6. Clamping plates 7 are fixedly installed on the top of each movable column 3. Support frames 8 are fixedly installed at both ends of the workbench 1. Cylinders 9 are fixedly installed on the side of each support frame 8 that is close to each other. The transmission ends of the two cylinders 9 are respectively fixedly connected to the two mounting cylinders 2. A support plate 10 is fixedly installed on one side of the top of the workbench 1. A drive motor 11 is fixedly installed on the upper part of one side of the support plate 10. The output end of the drive motor 11 is provided with a transmission assembly, which is connected to the two clamping plates 7. When the drive motor 11 operates, it outputs power to the two clamping plates 7 through the transmission assembly, causing the two clamping plates 7 to move and adjust their height.

[0020] In use, the operator starts the drive motor 11 to drive the transmission assembly. When the transmission assembly is running, it drives the moving column 3 to move upward along the inside of the mounting cylinder 2 via the rack 4. When the two moving columns 3 move upward, they can drive the clamping plate 7 to move upward to adjust the height. During positioning, the operator starts the two cylinders 9 to push the two mounting cylinders 2 to move towards each other. When the two mounting cylinders 2 move, they drive the slider 5 to slide inside the slide groove 6, which increases the stability of the mounting cylinders 2 during movement. When the two mounting cylinders 2 move towards each other, they drive the two clamping plates 7 to move towards each other via the two moving columns 3 to clamp and position the crankcase blank. This positioning device allows for quick and convenient adjustment of the height of the clamping plate 7, reducing the workload of the operator and improving work efficiency.

[0021] The transmission assembly includes a drive sprocket 12, which is fixedly mounted on the output end of the drive motor 11. A driven sprocket 14 is provided on one side of the drive sprocket 12. A chain 25 meshes between the driven sprocket 14 and the drive sprocket 12. A positioning frame 13 is rotatably mounted on the side of the driven sprocket 14 away from the drive motor 11. One end of the positioning frame 13 is fixedly connected to the support plate 10. A rotating cylinder 15 is fixedly mounted in the middle of the driven sprocket 14. Two bushings 16 are rotatably mounted on the surface of the rotating cylinder 15. The lower parts of the two bushings 16 are fixedly connected to the top of the workbench 1 via mounting rods. Two transmission rods 17 are inserted into the inside of the rotating cylinder 15. Two limit strips 26 are fixedly mounted on the surface of each of the two transmission rods 17. Two limit grooves 27 are symmetrically opened inside the rotating cylinder 15. The four limit strips 26 are slidably mounted on the two limit grooves respectively. Inside the slot 27, a driving bevel gear 19 is fixedly installed at the ends of the two transmission rods 17 that are far apart from each other. A bearing 18 is rotatably installed on the surface of the two transmission rods 17. The two bearings 18 are fixedly connected to the two mounting cylinders 2 through connectors. A driven bevel gear 20 is meshed on one side of the surface of the driving bevel gear 19. A rotating rod 21 is fixedly installed on one side of the driven bevel gear 20. A rotating sleeve 22 is rotatably installed on the surface of the rotating rod 21. The surfaces of the two rotating sleeves 22 are fixedly connected to the two mounting cylinders 2 respectively. A transmission gear 23 is fixedly installed at one end of the rotating rod 21. A positioning seat 24 is rotatably installed at the end of the transmission gear 23 that is far away from the rotating rod 21. The sides of the two positioning seats 24 that are close to each other are fixedly connected to the two mounting cylinders 2 respectively. One side of the two transmission gears 23 is meshed with the two racks 4 respectively.

[0022] In use, the operator starts the drive motor 11 to drive the drive sprocket 12 to rotate along the positioning frame 13. When the drive sprocket 12 rotates, it drives the driven sprocket 14 to rotate through the chain 25. When the driven sprocket 14 rotates, it drives the rotating cylinder 15 to rotate along the inside of the bushing 16. When the rotating cylinder 15 rotates, it drives the two transmission rods 17 to rotate along the inside of the two bearings 18 through the cooperation of the limiting strip 26 and the limiting groove 27. When the two transmission rods 17 rotate, they drive the driven bevel gear 20 to rotate through the drive bevel gear 19.

[0023] When the driven bevel gear 20 rotates, it drives the rotating rod 21 to rotate inside the rotating sleeve 22. When the two rotating rods 21 rotate, they drive the transmission gear 23 to rotate along the positioning seat 24. When the transmission gear 23 rotates, it drives the moving column 3 to move upward through the rack 4.

Claims

1. A machining positioning device for a crankcase blank, comprising a worktable (1), characterized in that: Both ends of the top of the workbench (1) are provided with mounting barrels (2), the interiors of the mounting barrels (2) are inserted with moving columns (3), the sides away from each other of the two moving columns (3) are fixedly provided with racks (4), the bottoms of the two mounting barrels (2) are fixedly provided with two sliding blocks (5), the upper surface of the workbench (1) is provided with four sliding grooves (6), the four sliding blocks (5) are slidingly installed in the interiors of the four sliding grooves (6), the tops of the two moving columns (3) are fixedly provided with clamping plates (7), both ends of the workbench (1) are fixedly provided with support frames (8), the sides close to each other of the two support frames (8) are fixedly provided with air cylinders (9), the transmission ends of the two air cylinders (9) are fixedly connected with the two mounting barrels (2), one side of the top of the workbench (1) is fixedly provided with a support plate (10), the upper portion of one side of the support plate (10) is fixedly provided with a driving motor (11), the output end of the driving motor (11) is provided with a transmission assembly, the transmission assembly is drivingly connected with the two clamping plates (7), when the driving motor (11) operates, power is output to the two clamping plates (7) through the transmission assembly, so that the two clamping plates (7) move to adjust the height.

2. A crankcase blank machining positioning device according to claim 1, characterised in that: The transmission assembly comprises a driving sprocket (12), the driving sprocket (12) is fixedly installed at the output end of the driving motor (11), one side of the driving sprocket (12) is provided with a driven sprocket (14), the driving sprocket (12) and the driven sprocket (14) are meshedly connected with a chain (25) therebetween, the driven sprocket (14) is rotatably installed with a positioning frame (13) on the side away from the driving motor (11), one end of the positioning frame (13) is fixedly connected with the support plate (10), the middle portion of the driven sprocket (14) is fixedly installed with a rotating barrel (15), the surface of the rotating barrel (15) is rotatably installed with two shaft sleeves (16), the lower portions of the two shaft sleeves (16) are fixedly connected with the top of the workbench (1) through mounting rods.

3. A crankcase blank machining positioning device according to claim 2, characterised in that: The interiors of the rotating barrel (15) are inserted with two transmission rods (17), the surfaces of the two transmission rods (17) are fixedly installed with two limiting strips (26), the interiors of the rotating barrel (15) are symmetrically provided with two limiting grooves (27), the four limiting strips (26) are slidingly installed in the interiors of the two limiting grooves (27) respectively, the ends away from each other of the two transmission rods (17) are fixedly installed with driving bevel gears (19), the surfaces of the two transmission rods (17) are rotatably installed with bearings (18), the two bearings (18) are fixedly connected with the two mounting barrels (2) through connecting heads.

4. A crankcase blank machining positioning device according to claim 3, characterised in that: Said initiative bevel gear (19) surface one side is engaged with driven bevel gear (20), driven bevel gear (20) one side is fixedly installed with rotating rod (21), the surface of rotating rod (21) is rotatably installed with rotating sleeve (22), the surface of two rotating sleeves (22) is fixedly connected with two installation cylinders (2) respectively, one end of rotating rod (21) is fixedly installed with transmission gear (23), the end away from rotating rod (21) of transmission gear (23) is rotatably installed with positioning seat (24), the side of two positioning seats (24) close to each other is fixedly connected with two installation cylinders (2) respectively, one side of two transmission gears (23) is engaged with two racks (4) respectively.

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