Cam shaft polishing device

Abstract

The utility model discloses a camshaft polishing device, which belongs to the field of polishing and comprises a workbench, a camshaft clamping device is arranged above the workbench and comprises a rotating motor, a positioning four-jaw chuck and a movable positioning cone device. An output shaft of the rotating motor is connected with the positioning four-jaw chuck through a fixed bearing frame, and a cam shaft grinding device is arranged on one side of the workbench. Compared with the prior art, the cam shaft polishing device has the advantages that the position of the circle center of the polishing disc is changed by adjusting the movable adjusting block below the movable polishing fixing frame, and when the protruding part of the cam shaft rotates to the wheel face of the polishing disc, the movable adjusting block below the polishing disc moves outwards in the adjusting block sliding groove; when the concave surface part of the cam shaft rotates to the wheel surface of the grinding disc, the movable adjusting block is pushed by the thrust spring to move towards the interior of the adjusting block sliding groove, and therefore the wheel surface of the grinding disc makes contact with the wheel surface of the cam shaft all the time.

Description

Technical Field

[0001] The utility model relates to the field of grinding, in particular to a camshaft grinding device. Background Art

[0002] A camshaft refers to a mechanical transmission component consisting of a cam and a shaft. It is connected to a certain component by multiple concentric cams, thereby controlling the movement trajectory and speed of the component, thereby realizing the normal operation of various mechanical equipment. Due to its characteristics, it is widely used in internal combustion engines, hydraulic machinery, agricultural machinery, engineering machinery and other fields. In the production process of camshafts, four processes of turning, milling, drilling and cutting must be performed. Therefore, the camshaft will inevitably have burrs after completing the above processes. In order to ensure the accuracy of the camshaft, a camshaft grinding device is needed to grind the camshaft after turning, milling, drilling and cutting to remove burrs and ensure its accuracy.

[0003] After searching, the Chinese utility model patent with application number: 202320882549.2 discloses a burr grinding device for camshaft processing. The camshaft is clamped by a four-jaw chuck and a movable positioning cone device above the workbench, and the position of the grinding disc is controlled by a movable slider. The grinding disc is moved to the axial surface of the camshaft, and the rotating motor is turned on to make the camshaft rotate and grind on the grinding disc. The grinding disc is pushed to move on the cross section of the camshaft by changing the position of the movable slider, thereby achieving the grinding effect of the camshaft.

[0004] This type of grinding device can effectively grind a straight camshaft. However, when facing a camshaft whose cam is not concentric with the shaft, because the grinding surface of the grinding device is a straight line, the protruding part of the camshaft will be directly ground flat after grinding, thereby changing the camshaft structure and causing the camshaft to be scrapped. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing camshaft grinding device cannot grind the cam whose cam is not concentric with the shaft rod.

[0006] To solve the above technical problems, the technical solution provided by the utility model is: a camshaft grinding device, comprising a workbench, a camshaft clamping device is provided above the workbench, the camshaft clamping device comprises a rotating motor, a positioning four-jaw chuck and a movable positioning cone device, the output shaft of the rotating motor is connected to the positioning four-jaw chuck through a fixed bearing frame, a camshaft grinding device is provided on one side of the workbench, the camshaft grinding device comprises a grinding disk for grinding the surface of the camshaft and a movable slider for fixing the position of the grinding disk, movable reset thread frames for adjusting the position of the movable slider are provided on both sides of the movable slider, the movable reset thread frame passes through the movable slider, the movable reset thread frame is connected to the workbench through a movable adjustment block below the movable reset thread frame, and the movable adjustment block passes through the side wall of the workbench.

[0007] As an improvement, the movable resetting threaded frame includes a grinding threaded rod, a grinding sliding auxiliary rod and a movable grinding fixed frame located on both sides of the grinding threaded rod and the grinding sliding auxiliary rod, the grinding threaded rod and the grinding sliding auxiliary rod both pass through the movable sliding block, the grinding threaded rod and the grinding sliding auxiliary rod are both connected to the movable grinding fixed frame through bearings, and the movable adjustment block is located below the movable grinding fixed frame.

[0008] As an improvement, the side wall of the workbench is provided with an adjustment block slot corresponding to the movable adjustment block, and the side of the workbench is provided with a closing plate for closing the entrance of the adjustment block slot, and a thrust spring is provided between the closing plate and the movable adjustment block, and the thrust spring is located inside the adjustment block slot.

[0009] As an improvement, the movable adjustment block is connected to the adjustment block slide groove through body contact, the grinding threaded rod is connected to the screw hole inside the movable slider through a thread, the grinding disc is connected to the movable slider through a pin structure, and the grinding sliding auxiliary rod is slidingly connected to the movable adjustment block through body contact.

[0010] As an improvement, the movable positioning cone device includes a positioning cone, a positioning cone fixing plate, a fixed threaded rod, a fixed auxiliary rod and a fixed bearing frame. The positioning cone fixing plate and the positioning cone, the fixed threaded rod, the fixed auxiliary rod and the fixed bearing frame are all connected through bearings. The fixed threaded rod and the fixed auxiliary rod both pass through the positioning cone fixing plate. The fixed threaded rod is connected to the screw hole of the positioning cone fixing plate through a thread, and the fixed auxiliary rod is slidably connected to the sliding hole of the positioning cone fixing plate through body contact.

[0011] As an improvement, a rotating handle connecting column is provided on one side of the fixed threaded rod and the grinding threaded rod, a rotating handle is provided on the cylindrical surface of the rotating handle connecting column, and the rotating motor is connected to the power supply through a wire.

[0012] The advantages of the utility model compared with the prior art are: the device changes the center position of the grinding disk by adjusting the movable adjusting block under the movable grinding fixing frame, when the convex part of the camshaft rotates to the wheel surface of the grinding disk, the movable adjusting block under the grinding disk moves outward in the adjusting block slide groove, and when the concave part of the camshaft rotates to the wheel surface of the grinding disk, the movable adjusting block moves into the inside of the adjusting block slide groove under the push of the thrust spring, so that the wheel surface of the grinding disk is always in contact with the wheel surface of the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a general structural diagram of a camshaft grinding device.

[0014] Figure 2 The utility model discloses an exploded diagram of a camshaft grinding device of the utility model.

[0015] Figure 3 The utility model is a sectional view of a camshaft grinding device of the utility model.

[0016] Figure 4 The utility model is a cross-sectional view of a movable positioning cone device of a camshaft grinding device.

[0017] As shown in the figure: 1. Workbench; 2. Camshaft clamping device; 21. Rotating motor; 22. Positioning four-jaw chuck; 23. Movable positioning cone device; 231. Positioning cone; 232. Positioning cone fixing plate; 233. Fixed threaded rod; 234. Fixed auxiliary rod; 235. Rotating handle connecting column; 236. Rotating handle; 24. Fixed bearing frame; 3. Camshaft grinding device; 31. Grinding disc; 32. Moving slide block; 33. Movable reset threaded frame; 331. Grinding threaded rod; 332. Grinding sliding auxiliary rod; 333. Movable grinding fixed frame; 34. Moving adjustment block; 35. Adjustment block slide groove; 36. Closing plate; 37. Thrust spring; 4. Bearing. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] As the instruction manual Figure 1 , 2, 3, comprising a workbench 1, a camshaft clamping device 2 is arranged above the workbench, the camshaft clamping device 2 comprises a rotating motor 21, a positioning four-jaw chuck 22 and a movable positioning cone device 23, the output shaft of the rotating motor 21 is connected to the positioning four-jaw chuck 22 through a fixed bearing frame 24, a camshaft grinding device 3 is arranged on one side of the workbench 1, the camshaft grinding device 3 comprises a grinding disc 31 for grinding the surface of the camshaft and a movable slider 32 for fixing the position of the grinding disc 31, and both sides of the movable slider 32 A movable reset thread frame 33 for adjusting the position of the movable slider 32 is provided, the movable reset thread frame 33 passes through the movable slider 32, the movable reset thread frame 33 is connected to the workbench 1 through a movable adjustment block 34 below the movable reset thread frame 33, the movable adjustment block 34 passes through the side wall of the workbench 1, the movable reset thread frame 33 includes a grinding thread rod 331, a grinding sliding auxiliary rod 332 and a movable grinding fixed frame 33 located on both sides of the grinding thread rod 331 and the grinding sliding auxiliary rod 332 3, the grinding threaded rod 331 and the grinding sliding auxiliary rod 332 both pass through the movable slider 32, the grinding threaded rod 331 and the grinding sliding auxiliary rod 332 are both connected to the movable grinding fixed frame 333 through the bearing 4, the movable adjustment block 34 is located below the movable grinding fixed frame 333, the side wall of the workbench 1 is provided with an adjustment block slide 35 corresponding to the movable adjustment block 34, the side of the workbench 1 is provided with a closing plate 36 for closing the entrance of the adjustment block slide 35, and a sealing plate 36 is provided between the closing plate 36 and the movable adjustment block 34. There is a thrust spring 37, which is located inside the adjusting block slot 35. The movable adjusting block 34 is connected to the adjusting block slot 35 through body contact. The grinding threaded rod 331 is connected to the screw hole inside the movable slider 32 through a thread. The grinding disc 31 is connected to the movable slider 32 through a pin structure. The grinding sliding auxiliary rod 332 is slidingly connected to the movable adjusting block 34 through body contact. The thrust spring 37 in the adjusting block slot 35 allows the camshaft and the grinding disc 31 to always maintain the corresponding grinding depth.

[0020] As the instruction manual Figure 1 , 2As shown in , 4, the movable positioning cone device 23 includes a positioning cone 231, a positioning cone fixing plate 232, a fixed threaded rod 233, a fixed auxiliary rod 234 and a fixed bearing frame 24, the positioning cone fixing plate 232 and the positioning cone 231, the fixed threaded rod 233, the fixed auxiliary rod 234 and the fixed bearing frame 24 are all connected through the bearing 4, the fixed threaded rod 233 and the fixed auxiliary rod 234 all pass through the positioning cone fixing plate 232, the fixed threaded rod 233 is connected to the screw hole of the positioning cone fixing plate 232 through a thread, the fixed auxiliary rod 234 is slidably connected to the sliding hole of the positioning cone fixing plate 232 through body contact, the fixed threaded rod 233 and the grinding threaded rod 331 are both provided with a rotating handle connecting column 235 on one side, and a rotating handle 236 is provided on the cylindrical surface of the rotating handle connecting column 235, the rotating motor 21 is connected to the power supply through a wire, and the length of the camshaft clamping device 2 is adjusted by rotating the fixed threaded rod 233 to facilitate the clamping of the camshaft.

[0021] During the specific implementation of the utility model, the rotating motor 21 is fixed to the workbench 1 by screws, the output shaft of the rotating motor 21 passes through one side of the fixed bearing frame 24, the input shaft of the positioning four-jaw chuck 22 is inserted through the fixed bearing frame 24, the bearing 4 is passed through the through hole of the fixed bearing frame 24, the output shaft of the rotating motor 21 and the input shaft of the positioning four-jaw chuck 22 are fixedly connected, the thread of the fixed threaded rod 233 is screwed into the screw hole of the positioning cone fixing plate 232, the fixed auxiliary rod 234 passes through the sliding hole of the positioning cone fixing plate 232, the fixed threaded rod 233 and the fixed auxiliary rod 234 are inserted into the fixed bearing frame 24 below the positioning four-jaw chuck 22, and the bearing 4 is used for fixing. Note that the positioning cone through hole of the positioning cone fixing plate 232 is located above the fixed threaded rod 233 and the fixed auxiliary rod 234; the bearing 4 is inserted into the positioning cone through hole of the positioning cone fixing plate 232, and the positioning cone 231 is inserted into the bearing 4; the other end of the fixed threaded rod 233 and the fixed auxiliary rod 234 are passed through the fixed cone fixing plate 232. Insert the bearing 4 into the through hole of the fixed bearing frame 24 on the opposite side of the input shaft of the four-jaw chuck 22 for fixing, and the rotating handle connecting column 235 of the fixed threaded rod 233 is located on the outside of the fixed bearing frame 24; align the pin hole of the grinding disc 31 with the pin hole of the moving slider 32, and insert the pin for fixing; insert the grinding threaded rod 331 and the grinding sliding auxiliary rod 332 into the screw hole and through hole of the moving slider 32 respectively; connect the column sleeves at both ends of the grinding threaded rod 331 and the grinding sliding auxiliary rod 332 Upper bearing 4, insert the ends of bearing 4 on both sides of the grinding threaded rod 331 and the grinding sliding auxiliary rod 332 into the through holes of the movable grinding fixed frame 333, slide the movable adjustment blocks 34 under the two movable grinding fixed frames 333 into the adjustment block slide grooves 35 on both sides of the side walls of the workbench 1 respectively; connect the thrust spring 37 to the side wall end of the movable adjustment block 34; use the closing plate 36 to close the notch of the adjustment block slide groove 35, align the screw holes of the closing plate 36 and the workbench 1, and screw in the screws to fix it.

[0022] Before use, clamp the camshaft in the bayonet of the positioning four-jaw chuck 22, use the rotating handle 236 to cover the rotating handle connecting column 235, rotate and fix the threaded rod 233, so that the positioning cone 231 tightens the other end of the camshaft; pull the movable grinding fixing frame 333 backward, use the rotating handle 236 to rotate the grinding threaded rod 331, move the grinding disc 31 to the side wall of the cam, loosen the movable grinding fixing frame 333, and the grinding disc 31 is pressed against the side wall of the cam under the action of the thrust spring 37, turn on the rotating motor 21, and grind the cam in turn; when the cam is not concentric with the shaft rod, the grinding disc 31 moves back and forth under the action of the thrust spring 37 to ensure the grinding degree of the grinding disc 31.

[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A camshaft grinding device, comprising a workbench (1), a camshaft clamping device (2) is arranged above the workbench, the camshaft clamping device (2) comprises a rotating motor (21), a positioning four-jaw chuck (22) and a movable positioning cone device (23), the output shaft of the rotating motor (21) is connected to the positioning four-jaw chuck (22) through a fixed bearing frame (24), a camshaft grinding device (3) is arranged on one side of the workbench (1), the camshaft grinding device (3) comprises a grinding disc (31) for grinding the surface of the camshaft and a movable slider (32) for fixing the position of the grinding disc (31), characterized in that: A movable reset thread frame (33) for adjusting the position of the movable slider (32) is provided on both sides of the movable slider (32); the movable reset thread frame (33) passes through the movable slider (32); the movable reset thread frame (33) is connected to the workbench (1) via a movable adjustment block (34) below the movable reset thread frame (33); and the movable adjustment block (34) passes through the side wall of the workbench (1).

2. A camshaft grinding device according to claim 1, characterized in that: The movable resetting threaded frame (33) comprises a grinding threaded rod (331), a grinding sliding auxiliary rod (332), and a movable grinding fixed frame (333) located on both sides of the grinding threaded rod (331) and the grinding sliding auxiliary rod (332); the grinding threaded rod (331) and the grinding sliding auxiliary rod (332) both pass through the movable sliding block (32); the grinding threaded rod (331) and the grinding sliding auxiliary rod (332) are both connected to the movable grinding fixed frame (333) via a bearing (4); and the movable adjustment block (34) is located below the movable grinding fixed frame (333).

3. A camshaft grinding device according to claim 2, characterized in that: The side wall of the workbench (1) is provided with an adjustment block slot (35) corresponding to the movable adjustment block (34); the side of the workbench (1) is provided with a closing plate (36) for closing the entrance of the adjustment block slot (35); a thrust spring (37) is provided between the closing plate (36) and the movable adjustment block (34); and the thrust spring (37) is located inside the adjustment block slot (35).

4. A camshaft grinding device according to claim 3, characterized in that: The movable adjustment block (34) is connected to the adjustment block slide groove (35) through body contact, the grinding threaded rod (331) is connected to the screw hole inside the movable slider (32) through a thread, the grinding disc (31) is connected to the movable slider (32) through a pin structure, and the grinding sliding auxiliary rod (332) is slidably connected to the movable adjustment block (34) through body contact.

5. The camshaft grinding device according to claim 1, characterized in that: The movable positioning cone device (23) comprises a positioning cone (231), a positioning cone fixing plate (232), a fixed threaded rod (233), a fixed auxiliary rod (234) and a fixed bearing frame (24); the positioning cone fixing plate (232) and the positioning cone (231), the fixed threaded rod (233), the fixed auxiliary rod (234) and the fixed bearing frame (24) are all connected via a bearing (4); the fixed threaded rod (233) and the fixed auxiliary rod (234) both pass through the positioning cone fixing plate (232); the fixed threaded rod (233) is connected to a screw hole of the positioning cone fixing plate (232) via a thread; and the fixed auxiliary rod (234) is slidably connected to a sliding hole of the positioning cone fixing plate (232) via body contact.

6. A camshaft grinding device according to claim 5, characterized in that: A rotating handle connecting column (235) is provided on one side of the fixed threaded rod (233) and the grinding threaded rod (331). A rotating handle (236) is provided on the cylindrical surface of the rotating handle connecting column (235). The rotating motor (21) is connected to a power source via a wire.

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