Grinding device for cambered surface of rocker arm head

Abstract

The utility model belongs to the technical field of mechanical tools, and particularly relates to a rocker arm head cambered surface polishing device which comprises a machine frame, a fixing mechanism and a polishing mechanism are arranged on the machine frame, the fixing mechanism comprises a first supporting frame fixedly installed on the machine frame, and the top of the first supporting frame is connected with a second supporting frame in a sliding mode. One side of the second supporting frame is connected with a first electric push rod, a rotating assembly is arranged in the second supporting frame, the second supporting frame is rotationally connected with a third supporting frame through the rotating assembly, and a clamping assembly is arranged at the top of the third supporting frame; the clamping assembly comprises a first mounting seat and a second mounting seat, and a bracket and a mounting plate are fixedly arranged on the first mounting seat. According to the rocker arm head cambered surface polishing device, taking and placing operation is easy and fast, machining efficiency is high, the machining precision of the milling cutter disc on the cambered surface is high, and the machining effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical tooling, and in particular relates to a rocker arm head arc surface grinding device. Background Art

[0002] The valve rocker arm mechanism is an important and indispensable mechanism of the internal combustion engine. One end of the valve rocker arm in the engine contacts the cam of the camshaft, and the other end controls the valve. Its main function is to transmit the motive force of the camshaft, cooperate with the operation of the camshaft, open the valve at the right time, and complete the engine's intake and exhaust.

[0003] like Figure 4 As shown, a rotating shaft hole 20 is provided in the middle of the rocker arm head, and a wear-resistant block 21 is provided at one end. The wear-resistant block 21 contacts the cam to increase its wear resistance. One side wall of the wear-resistant block is cut into an arc surface 22, so that the contact between the wear-resistant block 21 and the cam is smoother.

[0004] The utility model patent with publication number CN217702808U proposes an engine rocker arm arc surface grinding device, including a mounting seat, a control member, a grinding member and a driving assembly for driving the grinding member to rotate; the grinding member is detachably fixedly connected to the driving assembly, the grinding member includes sandpaper, and the driving assembly includes a motor and a conveyor belt; the mounting seat is mounted on the grinding member; the control member is rotatably connected to the mounting seat; the rocker arm is detachably fixedly connected to the control member, and the control member controls the rocker arm to press against or move away from the grinding member. This patent grinds and polishes the arc surface of the rocker arm by high-speed rotation of the sandpaper and tangency with the arc surface of the rocker arm, thereby improving the smoothness of the arc surface of the rocker arm.

[0005] During use, this technical solution may cause the conveyor belt to get stuck due to excessive grinding debris, affecting processing efficiency. In addition, the sandpaper becomes tight due to the increase in temperature during grinding, which may affect the processing accuracy to a certain extent. Utility Model Content

[0006] The utility model aims to provide a rocker arm head arc surface grinding device to solve the problems raised in the above background technology.

[0007] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0008] A rocker arm head arc surface grinding device, comprising a frame, the frame is provided with a fixing mechanism and a grinding mechanism, the fixing mechanism comprises a first support frame fixedly mounted on the frame, the top of the first support frame is slidably connected to a second support frame, one side of the second support frame is connected to a first electric push rod, a rotating assembly is provided in the second support frame, the second support frame is rotatably connected to a third support frame through the rotating assembly, and a clamping assembly is provided on the top of the third support frame;

[0009] The clamping assembly includes a first mounting seat and a second mounting seat fixedly arranged on the third support frame, a bracket and a mounting plate are fixedly arranged on the first mounting seat, the bracket vertically passes through the rotating shaft hole of the rocker arm head, a second electric push rod is arranged on the mounting plate, the second electric push rod is connected to the first push rod, a second push rod is fixedly arranged on the top of the second mounting seat, and the first push rod and the second push rod are respectively located on both sides of the bracket.

[0010] As an improvement, the rotating assembly includes a first bevel gear, which is fixedly connected to the third support frame via a connecting rod, the first bevel gear is meshed with a second bevel gear, the second bevel gear is connected to the first motor, a frame is fixedly provided inside the second support frame, and the first bevel gear, the second bevel gear and the first motor are all mounted on the frame.

[0011] As a further improvement, the grinding mechanism includes a fourth support frame, in which a second motor is fixedly installed, and the second motor is rotatably connected to a milling cutter disc, and the milling cutter disc is located outside the fourth support frame.

[0012] As a further improvement, the upper and lower parts of the bracket are both cylindrical in shape, the diameter of the upper cylinder is smaller than the diameter of the lower cylinder, the diameter of the upper cylinder is smaller than the diameter of the rocker arm head rotating shaft hole, and the diameter of the lower cylinder is larger than the diameter of the rocker arm head rotating shaft hole.

[0013] As a further improvement, a fifth support frame is fixedly provided on the frame, the first electric push rod is fixedly installed in the fifth support frame, and the push rod of the first electric push rod passes through the side wall of the fifth support frame and is fixedly connected to the second support frame.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] The rocker arm head arc surface grinding device provided by the utility model fixes the rocker arm head by arranging a clamping assembly to ensure stability during the grinding process, and at the same time, the taking and placing operations are simple and quick, thereby improving the processing efficiency; by arranging a rotating assembly to drive the rocker head to rotate and grind, the milling cutter disc has a higher processing accuracy for the arc surface, thereby achieving a better processing effect of the rocker arm head; compared with the prior art, no transmission belt and sandpaper are used, so there will be no problems of the transmission belt being stuck and the sandpaper being tightened due to the increase in temperature during grinding, thereby affecting the processing efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2is a schematic diagram of the internal structure of the second support frame and the fifth support frame;

[0018] Figure 3 is a schematic diagram of the structure of the clamping assembly;

[0019] Figure 4 It is a structural diagram of the rocker arm head;

[0020] Wherein: 1-frame, 2-first support frame, 3-second support frame, 4-third support frame, 5-fourth support frame, 6-fifth support frame, 7-first electric push rod, 8-first mounting seat, 9-second mounting seat, 10-bracket, 11-mounting plate, 12-second electric push rod, 13-first push rod, 14-second push rod, 15-first bevel gear, 16-second bevel gear, 17-first motor, 18-milling cutter disc, 19-frame, 20-rotating shaft hole, 21-wear-resistant block, 22-arc surface. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the specific implementation methods and the accompanying drawings. The accompanying drawings are only for illustrative purposes and are only schematic diagrams, not actual drawings, and should not be construed as limiting the present application. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] like Figure 1-4 As shown, a rocker arm head arc surface grinding device includes a frame 1, on which a fixing mechanism and a grinding mechanism are provided, the fixing mechanism includes a first support frame 2 fixedly mounted on the frame 1, the top of the first support frame 2 is slidably connected to the second support frame 3, one side of the second support frame 3 is connected to the first electric push rod 7, the first electric push rod 7 drives the second support frame 3 to slide on the first support frame 2, and the second support frame 3 can move horizontally in a direction close to or away from the grinding mechanism.

[0024] Specifically, the frame 1 is fixedly provided with a fifth support frame 6, the first electric push rod 7 is fixedly installed in the fifth support frame 6, and the push rod of the first electric push rod 7 passes through the side wall of the fifth support frame 6 and is fixedly connected to the second support frame 3. The second support frame 3 is driven to move by the first electric push rod 7. When grinding is required, the first electric push rod 7 moves the rocker arm head toward the direction close to the milling cutter disc 18, and after grinding is completed, the rocker arm head is moved away from the milling cutter disc 18.

[0025] A rotating assembly is provided in the second support frame 3, and the second support frame 3 is rotatably connected to the third support frame 4 through the rotating assembly. A clamping assembly is provided on the top of the third support frame 4, and the clamping assembly fixes the rocker arm head and makes it rotate with the rotation of the third support frame 4.

[0026] The clamping assembly includes a first mounting seat 8 and a second mounting seat 9 fixedly mounted on the third support frame 4. A bracket 10 and a mounting plate 11 are fixedly mounted on the first mounting seat 8. The bracket 10 is arranged in a direction close to the grinding mechanism. The bracket 10 vertically passes through the rotating shaft hole 20 of the rocker head. The bracket 10 plays a supporting and limiting role. A second electric push rod 12 is fixedly mounted on the mounting plate 11. The second electric push rod 12 is connected to the first push rod 13. The second electric push rod 12 drives the first push rod 13 to move horizontally. A second push rod 14 is fixedly mounted on the top of the second mounting seat 9. The first push rod 13 and the second push rod 14 are respectively located on both sides of the bracket 10, and the first push rod 13 and the second push rod 14 correspond to the two ends of the rocker head respectively. One end of the rocker head provided with a wear-resistant block 21 abuts against the second push rod 14, and the arc surface 22 is placed in a direction close to the milling cutter disc 18.

[0027] In this embodiment, the rocker head is fixed by cooperating with the first push rod 13 and the second push rod 14. First, the bracket 10 is inserted into the rotating shaft hole 20 of the rocker head. Then, the push rod of the second electric push rod 12 is extended, driving the first push rod 13 to move toward the rocker head and abut against it, so that the other end of the rocker head abuts against the second push rod 14, so that the rocker head is firmly fixed on the clamping assembly.

[0028] Specifically, the rotating assembly includes a first bevel gear 15, which is fixedly connected to the third support frame 4 through a connecting rod, and the first bevel gear 15 is meshed with a second bevel gear 16, and the second bevel gear 16 is connected to a first motor 17. A frame 19 is fixedly provided in the second support frame 3, and the first bevel gear 15, the second bevel gear 16 and the first motor 17 are all mounted on the frame 19.

[0029] In this embodiment, the first motor 17 drives the second bevel gear 16 to rotate, and the second bevel gear 16 drives the first bevel gear 15 to rotate, thereby driving the third support frame 4 to rotate.

[0030] Specifically, the grinding mechanism includes a fourth support frame 5, in which a second motor is fixedly installed (the second motor is not drawn in the accompanying drawings), and the second motor is rotatably connected to a milling cutter disc 18, which is installed on the outside of the fourth support frame 5. The arc surface 22 is ground by rotating the milling cutter disc 18.

[0031] In this embodiment, the second motor drives the milling disc 18 to rotate at high speed, and moves the rocker arm head toward the milling disc 18 until the rocker arm head moves to a position where it can be polished by the milling disc 18, and then the rotating assembly drives the rocker arm head to rotate 45° to complete the polishing of the arc surface 22 of the rocker arm head.

[0032] Specifically, the upper and lower parts of the bracket 10 are both cylindrical in shape, the diameter of the upper cylinder is smaller than the diameter of the lower cylinder, and the diameter of the upper cylinder is smaller than the diameter of the rotating shaft hole 20, so that the rocker arm head can be placed on the bracket 10, and the diameter of the lower cylinder is larger than the diameter of the rotating shaft hole 20 of the rocker arm head, so that the rocker arm head will not slide down after being placed on the bracket 10, thereby fixing the position of the rocker arm head during the grinding process, ensuring grinding stability and processing accuracy.

[0033] The working process of the utility model is: align the rotating shaft hole 20 of the rocker head with the bracket 10, the wear-resistant block 21 and the second push rod 14 are located on the same side of the bracket 10, and the arc surface 22 is placed toward the milling cutter disc 18, and then the push rod of the second electric push rod 12 is extended, driving the first push rod 13 to move in the direction close to the rocker head and abut against it, so that the wear-resistant block 21 and the second push rod 14 abut against each other, and the rocker head is fixed on the clamping assembly. After the rocker head is fixed, the push rod of the first electric push rod 7 is extended, and the second support frame 3 is moved in the direction close to the milling cutter disc 18, thereby driving the rocker head to move in the direction close to the milling cutter disc 18, until it moves to the position where the rocker head and the milling cutter disc 18 can be polished, and then the first motor 17 works, driving the second bevel gear 16 to rotate, and then driving the first bevel gear 15 to rotate, so that the third support frame 4 drives the rocker head to rotate 45°, and the arc surface 22 of the rocker head is polished. After grinding is completed, the push rod of the first electric push rod 7 contracts, causing the rocker arm head to move away from the milling cutter disc 18, and then the rotating assembly causes the third support frame 4 to rotate in the opposite direction. Finally, the push rod of the second electric push rod 12 contracts, and the rocker arm head is released and can be removed from the bracket 10.

[0034] The rocker head arc surface 22 grinding device provided by the utility model fixes the rocker head by setting a clamping assembly to ensure stability during the grinding process, and the pick-up and placement operation is simple and fast, thereby improving processing efficiency. By setting a rotating assembly to drive the rocker head to rotate for grinding, the milling cutter disc 18 has a higher processing accuracy for the arc surface 22, so that the processing effect of the rocker head is better. Compared with the prior art, no transmission belt and sandpaper are used, so there will be no problems such as the transmission belt getting stuck and the sandpaper being tightened due to the increase in temperature during grinding, thereby affecting the processing efficiency and accuracy.

[0035] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A rocker arm head arc surface grinding device, comprising a frame, wherein the frame is provided with a fixing mechanism and a grinding mechanism, characterized in that: The fixing mechanism comprises a first support frame fixedly mounted on the frame, the top of the first support frame is slidably connected to the second support frame, one side of the second support frame is connected to the first electric push rod, a rotating assembly is provided in the second support frame, the second support frame is rotatably connected to the third support frame through the rotating assembly, and a clamping assembly is provided on the top of the third support frame; The clamping assembly includes a first mounting seat and a second mounting seat fixedly arranged on the third support frame, a bracket and a mounting plate are fixedly arranged on the first mounting seat, the bracket vertically passes through the rotating shaft hole of the rocker arm head, a second electric push rod is arranged on the mounting plate, the second electric push rod is connected to the first push rod, a second push rod is fixedly arranged on the top of the second mounting seat, and the first push rod and the second push rod are respectively located on both sides of the bracket.

2. The rocker arm head arc surface grinding device according to claim 1, characterized in that: The rotating assembly includes a first bevel gear, which is fixedly connected to the third support frame via a connecting rod, the first bevel gear is meshed with a second bevel gear, the second bevel gear is connected to a first motor, a frame is fixedly provided inside the second support frame, and the first bevel gear, the second bevel gear and the first motor are all mounted on the frame.

3. The rocker arm head arc surface grinding device according to claim 2, characterized in that: The grinding mechanism comprises a fourth support frame, a second motor is fixedly installed in the fourth support frame, the second motor is rotatably connected to a milling cutter disc, and the milling cutter disc is located outside the fourth support frame.

4. The rocker arm head arc surface grinding device according to claim 3, characterized in that: The upper and lower parts of the bracket are both cylindrical in shape, the diameter of the upper cylinder is smaller than the diameter of the lower cylinder, the diameter of the upper cylinder is smaller than the diameter of the rocker head rotating shaft hole, and the diameter of the lower cylinder is larger than the diameter of the rocker head rotating shaft hole.

5. The rocker arm head arc surface grinding device according to claim 4, characterized in that: A fifth support frame is fixedly provided on the frame, the first electric push rod is fixedly installed in the fifth support frame, and a push rod of the first electric push rod passes through a side wall of the fifth support frame and is fixedly connected to the second support frame.

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