Gear key groove milling clamping device

Abstract

The utility model discloses a gear key groove milling clamping device, and relates to the technical field of machining. Comprising a bottom plate, a cover plate is installed on the bottom plate through bolts, a shaft rod is installed in an inner cavity of the cover plate through a bearing, follow-up gears are evenly distributed on the shaft rod, one end of the shaft rod is in threaded connection with a hand wheel, the head end of the hand wheel extends outwards from the cover plate, and the hand wheel is in threaded connection with a hand screw bolt and is in fastening connection with the cover plate through the hand screw bolt. According to the gear key groove milling clamping device, a workpiece is placed between the two pressing plates, the hand-screwing bolt is unscrewed, then the hand wheel is rotated, the follow-up gear on the shaft rod is driven to rotate, the pressing plates on the lifting rod are driven to descend under the meshing action of the follow-up gear and the rack so as to press and fix the workpiece, and then the hand-screwing bolt is screwed so that the hand wheel can be fastened to the cover plate. According to the clamping device, simultaneous clamping of multiple stations can be achieved according to the actual situation, the clamping time can be saved, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a gear keyway milling clamping device. Background Technology

[0002] A gear shaft consists of a long shaft and a gear mounted on the long shaft. When machining the gear on the long shaft using a machine tool, a fixture is needed to clamp the long shaft of the gear shaft in order to ensure the machining accuracy of the gear shaft.

[0003] A common gear clamping fixture is a structure that can clamp and fix the gear shaft by unscrewing the nut. It is manually clamped, which requires labor, and can only mill one workpiece at a time, resulting in low production efficiency and failure to improve equipment utilization. Utility Model Content

[0004] This invention provides a gear keyway milling clamping device to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gear keyway milling clamping device, comprising a base plate, a cover plate mounted on the base plate by bolts, a shaft mounted in the inner cavity of the cover plate by bearings, and follower gears evenly distributed on the shaft, a handwheel threadedly connected to one end of the shaft, the head end of the handwheel extending outward from the cover plate, a hand-tightening bolt threadedly connected to the handwheel, and fastened to the cover plate by the hand-tightening bolt, sleeve holes evenly distributed on the cover plate, and a lifting rod movably sleeved through the sleeve holes, a rack provided at the lower part of the lifting rod, and meshing with the follower gears through the rack, and a pressure plate mounted at the top of the lifting rod, with the pressure plates pressing and holding workpieces between each other.

[0006] Furthermore, the rear wall of the cover plate is provided with fixing holes, and the fixing holes are located at both ends thereon.

[0007] Furthermore, the top of the cover plate is inlaid with a limiting post, and the limiting post is located between each pair of pressure plates.

[0008] Furthermore, a lower rubber gasket is attached to the top of the cover plate, and the lower rubber gasket is located between each pair of pressure plates.

[0009] Furthermore, the lifting rod has a hollow structure, and a guide rod is embedded in the cover plate, with the guide rod being movably connected to the lifting rod.

[0010] Furthermore, an upper rubber pad is attached to the bottom surface of the pressure plate, and the upper rubber pad is located at both ends of the pressure plate.

[0011] Compared with the prior art, the present invention provides a gear keyway milling clamping device, which has the following advantages:

[0012] This gear keyway milling clamping device involves placing the workpiece between two pressure plates, loosening the hand-tightening bolts, and then rotating the handwheel to drive the follower gear on the shaft to rotate. Under the meshing action of the follower gear and the rack, the pressure plate on the lifting rod is driven to descend, thereby pressing and fixing the workpiece. Afterwards, the hand-tightening bolts are tightened to secure the handwheel to the cover plate. This clamping device can achieve simultaneous clamping at multiple stations according to actual conditions, which helps to save clamping time and improve processing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a top sectional view of the present invention;

[0015] Figure 3 This is a side sectional view of the present invention.

[0016] In the diagram: 1. Base plate; 2. Cover plate; 3. Shaft; 4. Follower gear; 5. Handwheel; 6. Hand-tightening bolt; 7. Sleeve hole; 8. Lifting rod; 9. Rack; 10. Pressure plate; 11. Workpiece; 12. Fixing hole; 13. Limiting post; 14. Lower rubber gasket; 15. Guide rod; 16. Upper rubber gasket. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3This utility model discloses a gear keyway milling clamping device, including a base plate 1. A cover plate 2 is bolted to the base plate 1. A shaft 3 is mounted in the inner cavity of the cover plate 2 via a bearing, and follower gears 4 are evenly distributed on the shaft 3. A handwheel 5 is threaded to one end of the shaft 3, and the head end of the handwheel 5 extends outward from the cover plate 2. A hand-tightening bolt 6 is threaded to the handwheel 5 and is fastened to the cover plate 2 through the hand-tightening bolt 6. The cover plate 2 has evenly distributed sleeve holes 7, and a lifting rod 8 is movably sleeved through the sleeve holes 7. A rack 9 is provided at the lower part of the lifting rod 8, and the rack 9 is connected to... The follower gear 4 is engaged, and the top of the lifting rod 8 is equipped with a pressure plate 10. The pressure plates 10 hold the workpiece 11 between each other. The workpiece 11 is placed between the two pressure plates 10, the hand-tightening bolt 6 is loosened, and then the handwheel 5 is turned to drive the follower gear 4 on the shaft 3 to rotate. Under the meshing action of the follower gear 4 and the rack 9, the pressure plates 10 on the lifting rod 8 are driven to descend, thereby holding and fixing the workpiece 11. Then the hand-tightening bolt 6 is tightened to secure the handwheel 5 to the cover plate 2. This clamping device can achieve simultaneous clamping of multiple stations according to the actual situation, which is beneficial to save clamping time and improve processing efficiency.

[0019] Specifically, the cover plate 2 has fixing holes 12 on its rear wall, and the fixing holes 12 are located at both ends.

[0020] In this embodiment, the fixing hole 12 is used to fit the bolt and fix the clamping device to the milling equipment.

[0021] Specifically, the top of the cover plate 2 is inlaid with a limiting post 13, and the limiting post 13 is located between the pressure plates 10.

[0022] In this embodiment, the limiting post 13 is used to limit the workpiece 11 in the longitudinal direction.

[0023] Specifically, a lower rubber gasket 14 is attached to the top of the cover plate 2, and the lower rubber gasket 14 is located between the pressure plates 10.

[0024] In this embodiment, the lower rubber pad 14 can increase the roughness of the contact surface, thereby increasing the friction force on the workpiece 11, and playing the role of anti-slip and avoiding damage to the surface of the workpiece 11.

[0025] Specifically, the lifting rod 8 has a hollow structure, and the cover plate 2 is inlaid with a guide rod 15, which is movably connected to the lifting rod 8.

[0026] In this implementation plan, such as Figure 3 As shown, during the up-and-down movement of the lifting rod 8, the guide rod 15 is used to provide stable guidance so that the lifting rod 8 can move smoothly on the predetermined track.

[0027] Specifically, an upper rubber pad 16 is attached to the bottom surface of the pressure plate 10, and the upper rubber pad 16 is located at both ends of the pressure plate 10.

[0028] In this embodiment, the upper rubber pad 16 can increase the roughness of the contact surface, thereby increasing the frictional force on the workpiece 11, which serves to prevent slippage and avoid damaging the surface of the workpiece 11.

[0029] In use, place the workpiece 11 between the two pressure plates 10, loosen the hand-tightening bolt 6, and then turn the handwheel 5 to drive the follower gear 4 on the shaft 3 to rotate. Under the meshing action of the follower gear 4 and the rack 9, the pressure plate 10 on the lifting rod 8 will descend to hold and fix the workpiece 11. Then tighten the hand-tightening bolt 6 to secure the handwheel 5 to the cover plate 2. This clamping device can achieve simultaneous clamping at multiple stations according to the actual situation, which helps to save clamping time and improve processing efficiency.

[0030] In summary, this gear keyway milling clamping device involves placing the workpiece 11 between two pressure plates 10, loosening the hand-tightening bolt 6, and then rotating the handwheel 5 to drive the follower gear 4 on the shaft 3 to rotate. Under the meshing action of the follower gear 4 and the rack 9, the pressure plate 10 on the lifting rod 8 is driven to descend, thereby pressing and fixing the workpiece 11. Afterwards, the hand-tightening bolt 6 is tightened to secure the handwheel 5 to the cover plate 2. This clamping device can achieve simultaneous clamping at multiple stations according to actual conditions, which helps to save clamping time and improve processing efficiency.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear keyway milling chucking device comprising a base plate (1), characterized in that: A cover plate (2) is bolted to the base plate (1). A shaft (3) is mounted in the inner cavity of the cover plate (2) through a bearing. Follower gears (4) are evenly distributed on the shaft (3). A handwheel (5) is threaded to one end of the shaft (3). The head end of the handwheel (5) extends outward from the cover plate (2). A hand-tightening bolt (6) is threaded to the handwheel (5). The hand-tightening bolt (6) is fastened to the cover plate (2). Sleeve holes (7) are evenly distributed on the cover plate (2). A lifting rod (8) is movably sleeved through the sleeve holes (7). A rack (9) is provided at the lower part of the lifting rod (8). The rack (9) meshes with the follower gears (4). A pressure plate (10) is installed at the top of the lifting rod (8). The pressure plates (10) hold the workpiece (11) between each other.

2. A gear keyway milling fixture according to claim 1, characterized in that: The cover plate (2) has a fixing hole (12) on its rear wall, and the fixing hole (12) is located at both ends.

3. A gear keyway milling fixture as claimed in claim 1, wherein: The top of the cover plate (2) is inlaid with a limiting post (13), and the limiting post (13) is located between each pair of pressure plates (10).

4. A gear keyway milling fixture as claimed in claim 1, wherein: The top of the cover plate (2) is attached with a lower rubber pad (14), and the lower rubber pad (14) is located between each pair of pressure plates (10).

5. A gear keyway milling fixture as claimed in claim 1, wherein: The lifting rod (8) is a hollow structure, and a guide rod (15) is inlaid on the cover plate (2), and the guide rod (15) is movably connected to the lifting rod (8).

6. A gear keyway milling fixture as defined in claim 1 wherein: The bottom surface of the pressure plate (10) is attached with an upper rubber pad (16), and the upper rubber pad (16) is located at the left and right ends of the pressure plate (10).

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