Precise grinding device for special-shaped curved surface of camshaft

Abstract

The utility model relates to the technical field of mechanical engineering, and discloses a cam shaft special-shaped curved surface precision grinding device which comprises a fixing plate and further comprises a positioning shell fixed to the rear side of the fixing plate, and a limiting frame is connected into the positioning shell in a sliding mode. Firstly, a cam shaft rod is horizontally arranged between a positioning cone and a fixing shell, then a supporting plate can be pushed to move to be adjusted according to the length of a cam, positioning is conducted through a screw rod and a fixing plate, and then a second hydraulic rod is opened to retract so that a connecting frame can drive a T-shaped block to move in a sliding rail in a limited mode; then the slide rail drives the special-shaped plate to be matched with the clamping ring to gradually move towards the middle, finally four-direction relative movement is achieved to clamp and fix the shaft rod, under four-direction fixing, supporting of the two ends of the cam shaft and a shaft body is more uniform, and the problem of eccentricity or bending caused by two-direction fixing can be effectively solved; and particularly, when special-shaped curved surface grinding is carried out on the middle part of the cam shaft, the linearity and the symmetry of the workpiece can be better kept.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically to a precision grinding device for irregular curved surfaces of camshafts. Background Technology

[0002] A precision grinding apparatus for camshaft irregular curved surfaces is a specialized device used to machine complex irregular curved surfaces on camshafts, typically surfaces with specific geometries, to achieve high precision. Camshafts are critical components in internal combustion engines, automatic transmissions, and other mechanical equipment; their surface accuracy is crucial to the operational performance and stability of the entire mechanical system. Therefore, precision grinding is a necessary step to ensure component performance.

[0003] When producing irregular curved surfaces of camshafts, they usually need to be precision ground into the required cam shape. However, existing grinding equipment usually fixes the camshaft end in two directions. Although this fixing method is simple, its stability is poor. Especially when the camshaft shape is complex or the length is long, it is easy to cause small axial or radial displacements. Utility Model Content

[0004] The purpose of this invention is to provide a precision grinding device for irregular curved surfaces of camshafts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precision grinding device for irregular curved surfaces of camshafts, including a fixed plate, and further comprising:

[0006] A positioning shell is fixed to the rear side of the fixing plate. A limit frame is slidably connected inside the positioning shell. Slide grooves are provided on both sides inside the fixing plate. A support plate is slidably connected to one side of the top of the fixing plate. A slider that works with the slide groove is fixedly connected to the bottom of the support plate.

[0007] A limiting plate is fixed to one side of the top of the fixed plate. A positioning cone is fixedly connected to one side of the limiting plate. A fixed shell is fixedly connected to one side of the support plate. A clamping assembly is fixedly connected to one side of the support plate. The clamping assembly includes a second hydraulic rod. An adjusting component is fixedly connected to one side of the limiting frame. The adjusting component includes a first motor and a support frame.

[0008] Preferably, a screw is threaded to the front side of the slider, a torsion block is fixedly connected to one end of the screw, a fixing plate for positioning the slider is threaded to the surface of the screw, a limit rod is slidably connected to one side inside the fixing plate, and one end of the limit rod is fixedly connected to the slider.

[0009] Preferably, a first hydraulic rod is fixedly connected to the rear side of the positioning shell, and the output end of the first hydraulic rod extends into the interior of the positioning shell and is fixedly connected to the limiting frame.

[0010] Preferably, the first motor is fixed to one side of the limiting frame, the output end of the first motor passes through the interior of the positioning shell and is fixedly connected to a threaded rod, one end of the threaded rod is rotatably connected to the limiting frame through a bearing, and an internal threaded block is threadedly connected to the surface of the threaded rod, the top of the internal threaded block is fixedly connected to the support frame.

[0011] Preferably, a servo motor is fixedly connected to one side of the support frame, the output end of the servo motor extends through to one side of the support frame and is fixedly connected to a transmission rod, and a grinding roller is fixedly connected to the surface of the transmission rod.

[0012] Preferably, the second hydraulic rod is fixed to one side of the support plate, and a connecting frame is fixedly connected to the output end of the second hydraulic rod. A T-shaped block is fixedly connected to the end of the connecting frame away from the second hydraulic rod. A slide rail is slidably connected to the surface of the T-shaped block. A slide rod is slidably connected to one side of the slide rail. One end of the slide rod is fixedly connected to the fixed shell through a connecting plate. The end of the slide rail away from the slide rod extends to the outside of the fixed shell and is fixedly connected to a shaped plate. A retaining ring is fixedly connected to one side of the shaped plate.

[0013] Preferably, a rubber pad is fixedly connected to one side of the retaining ring, and a reinforcing block is fixedly connected between one side of the irregular plate and the slide rail.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention first places the camshaft rod flat between the positioning cone and the fixed shell. Then, the support plate can be pushed to move and adjust according to the cam length. It is positioned by the screw and the retaining plate. Then, the second hydraulic rod is opened to retract, causing the connecting frame to move the T-block within the slide rail. Subsequently, the slide rail will drive the irregular plate to move gradually towards the center with the retaining ring, finally achieving four-way relative movement to clamp and fix the shaft rod. Under four-way fixation, the support of the two ends of the camshaft and the shaft body is more uniform, which can effectively prevent the eccentricity or bending problems caused by two-way fixation. Especially when performing irregular curved surface grinding in the middle of the camshaft, it can better maintain the straightness and symmetry of the workpiece. Attached Figure Description

[0016] Figure 1 A schematic diagram of the camshaft irregular curved surface precision grinding device provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the structure from another perspective provided by this utility model;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 A schematic diagram of the clamping assembly structure provided by this utility model;

[0020] Figure 5 A schematic diagram of the adjusting component provided by this utility model.

[0021] In the diagram: 1. Fixed plate; 2. Positioning shell; 3. Limiting frame; 4. Slide groove; 5. Support plate; 6. Slider; 7. Limiting plate; 8. Positioning cone; 9. Fixed shell; 10. Clamping assembly; 1001. Second hydraulic rod; 1002. Connecting frame; 1003. T-block; 1004. Slide rail; 1005. Slide rod; 1006. Irregular plate; 1007. Snap ring; 1008. Rubber pad; 1009. Reinforcing block; 11. Adjusting component; 1101. First motor; 1102. Support frame; 1103. Threaded rod; 1104. Internal threaded block; 1105. Servo motor; 1106. Transmission rod; 1107. Grinding roller; 12. Screw; 13. Torsion block; 14. Fixed plate; 15. Limiting rod; 16. First hydraulic rod. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 As shown, the precision grinding device for irregular curved surfaces of camshaft includes a fixed plate 1 and a positioning shell 2 fixed to the rear side of the fixed plate 1. A limit frame 3 is slidably connected inside the positioning shell 2. Slide grooves 4 are provided on both sides inside the fixed plate 1. The position of the support plate 5 can be adjusted by the sliding block 6 through the opening of the slide grooves 4. The support plate 5 is slidably connected to one side of the top of the fixed plate 1, and the bottom of the support plate 5 is fixedly connected to the sliding block 6 used in conjunction with the slide grooves 4.

[0024] A limiting plate 7 is fixed to one side of the top of the fixed plate 1. The limiting plate 7, together with the positioning cone 8, facilitates the positioning of the other end of the shaft. The positioning cone 8 is fixedly connected to one side of the limiting plate 7. A fixed shell 9 is fixedly connected to one side of the support plate 5. A clamping assembly 10 is fixedly connected to one side of the support plate 5. The clamping assembly 10 includes a second hydraulic rod 1001. An adjusting component 11 is fixedly connected to one side of the limiting frame 3. The adjusting component 11 includes a first motor 1101 and a support frame 1102.

[0025] A screw 12 is threadedly connected to the front side of the slider 6. A torsion block 13 is fixedly connected to one end of the screw 12. A fixing plate 14 for positioning the slider 6 is threadedly connected to the surface of the screw 12. A limiting rod 15 is slidably connected to one side inside the fixing plate 14. One end of the limiting rod 15 is fixedly connected to the slider 6. When the user needs to position the slider 6 and the support plate 5 after they have moved, the torsion block 13 can be rotated to drive the screw 12 to rotate. At this time, the fixing plate 14 will move close to the fixing plate 1 on the surface of the screw 12 and the limiting rod 15 and press against the fixing plate 1 for positioning. A first hydraulic rod 16 is fixedly connected to the rear side of the positioning shell 2. The setting of the first hydraulic rod 16 makes it convenient to adjust the front and rear position of the limiting frame 3. The output end of the first hydraulic rod 16 passes through the interior of the positioning shell 2 and is fixedly connected to the limiting frame 3.

[0026] The first motor 1101 is fixed to one side of the limiting frame 3. The output end of the first motor 1101 passes through the interior of the positioning shell 2 and is fixedly connected to a threaded rod 1103. One end of the threaded rod 1103 is rotatably connected to the limiting frame 3 through a bearing. An internal threaded block 1104 is threadedly connected to the surface of the threaded rod 1103. The top of the internal threaded block 1104 is fixedly connected to the support frame 1102. By turning on the first motor 1101, the threaded rod 1103 can be rotated. At this time, the internal threaded block 1104 will drive the support frame 1102 to adjust left and right. Then, the servo motor 1105 is turned on in conjunction with the transmission rod 1106 to make the grinding roller 1107 rotate, thereby grinding the shaft. The grinding position can be adjusted left and right. A servo motor 1105 is fixedly connected to one side of the support frame 1102. The output end of the servo motor 1105 passes through one side of the support frame 1102 and is fixedly connected to a transmission rod 1106. A grinding roller 1107 is fixedly connected to the surface of the transmission rod 1106.

[0027] The second hydraulic rod 1001 is fixed to one side of the support plate 5. A connecting frame 1002 is fixedly connected to the output end of the second hydraulic rod 1001. A T-shaped block 1003 is fixedly connected to the end of the connecting frame 1002 away from the second hydraulic rod 1001. A slide rail 1004 is slidably connected to the surface of the T-shaped block 1003. A slide rod 1005 is slidably connected to one side inside the slide rail 1004. One end of the slide rod 1005 is fixedly connected to the fixed shell 9 through a connecting plate. Opening the second hydraulic rod 1001 and retracting it causes the connecting frame 1002 to move the T-shaped block 1003 within the slide rail 1004. Subsequently, one side of the slide rail 1004 will move within the surface of the slide rod 1005, thereby moving the irregular plate 1006. As the retaining ring 1007 gradually moves towards the center, the four retaining rings 1007 gradually move towards the center position, causing the rubber pad 1008 to adhere to the surface of the shaft for clamping and positioning. Finally, four-way relative movement is achieved to clamp and fix the shaft. The end of the slide rail 1004 away from the slide rod 1005 extends to the outside of the fixed shell 9 and is fixedly connected to the irregular plate 1006. A retaining ring 1007 is fixedly connected to one side of the irregular plate 1006, and a rubber pad 1008 is fixedly connected to one side of the retaining ring 1007. A reinforcing block 1009 is fixedly connected between one side of the irregular plate 1006 and the slide rail 1004. The reinforcing block 1009 can improve the connection strength between the irregular plate 1006 and the slide rail 1004.

[0028] Working principle: First, the camshaft rod is placed flat between the positioning cone 8 and the fixed housing 9. Then, the support plate 5 is pushed to move and adjust according to the cam length. Then, the torsion block 13 is rotated to drive the screw 12 to rotate. At this time, the retaining plate 14 will move close to the fixed plate 1 on the surface of the screw 12 and the limiting rod 15, and press and position itself. Then, the second hydraulic rod 1001 is opened and retracted, causing the connecting frame 1002 to drive the T-shaped block 1003 to move within the slide rail 1004. Then, one side of the slide rail 1004 will move within the surface of the slide rod 1005, and drive the irregular plate 1006 to move gradually towards the center in conjunction with the retaining ring 1007. Subsequently, the four retaining rings 1007 gradually move towards the center position, causing the rubber pad 1008 to adhere to the surface of the shaft for clamping and positioning. This achieves four-way relative movement to clamp and fix the shaft. At this time, the first hydraulic rod 16 can be opened to adjust the distance between the limit frame 3 and the fixed plate 1. Simultaneously, the first motor 1101 can be turned to rotate the threaded rod 1103. At this time, the internal threaded block 1104 will drive the support frame 1102 to adjust left and right. Then, the servo motor 1105 is turned on in conjunction with the transmission rod 1106 to rotate the grinding roller 1107, thereby grinding the shaft. The grinding position can be adjusted left and right.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] 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 camshaft profile precision grinding device comprising a fixed plate (1), characterized in that, Also includes: The positioning shell (2) is fixed to the rear side of the fixed plate (1), the inside of the positioning shell (2) is slidably connected with the limiting frame (3), the inside of the fixed plate (1) is provided with the sliding groove (4) on both sides, the top of the fixed plate (1) is slidably connected with the supporting plate (5), and the bottom of the supporting plate (5) is fixedly connected with the sliding block (6) matched with the sliding groove (4); The limiting plate (7) is fixed to one side of the top of the fixed plate (1), one side of the limiting plate (7) is fixedly connected with the positioning cone (8), one side of the supporting plate (5) is fixedly connected with the fixed shell (9), one side of the supporting plate (5) is fixedly connected with the clamping assembly (10), the clamping assembly (10) comprises a second hydraulic rod (1001), one side of the limiting frame (3) is fixedly connected with the adjusting part (11), and the adjusting part (11) comprises a first motor (1101) and a supporting frame (1102).

2. The camshaft profile surface precision grinding apparatus according to claim 1, characterized by: The front side of the sliding block (6) is threadedly connected with the screw rod (12), one end of the screw rod (12) is fixedly connected with the torsion block (13), and the surface of the screw rod (12) is threadedly connected with the retaining plate (14) used for positioning the sliding block (6). The inside of the retaining plate (14) is slidably connected with the limiting rod (15), and one end of the limiting rod (15) is fixedly connected with the sliding block (6).

3. The camshaft profile surface precision grinding apparatus of claim 1, wherein: The rear side of the positioning shell (2) is fixedly connected with the first hydraulic rod (16), and the output end of the first hydraulic rod (16) penetrates into the inside of the positioning shell (2) and is fixedly connected with the limiting frame (3).

4. The camshaft profile surface precision grinding apparatus of claim 1, wherein: The first motor (1101) is fixed to one side of the limiting frame (3), the output end of the first motor (1101) penetrates into the inside of the positioning shell (2) and is fixedly connected with the threaded rod (1103), one end of the threaded rod (1103) is rotatably connected with the limiting frame (3) through a bearing, and the surface of the threaded rod (1103) is threadedly connected with the internal thread block (1104). The top of the internal thread block (1104) is fixedly connected with the supporting frame (1102).

5. The camshaft profile surface precision grinding apparatus according to claim 4, characterized by: One side of the supporting frame (1102) is fixedly connected with the servo motor (1105), the output end of the servo motor (1105) penetrates into one side of the supporting frame (1102) and is fixedly connected with the transmission rod (1106), and the surface of the transmission rod (1106) is fixedly connected with the grinding roller (1107).

6. The camshaft profile surface precision grinding apparatus of claim 1, wherein: The second hydraulic rod (1001) is fixed on one side of the supporting plate (5), the output end of the second hydraulic rod (1001) is fixedly connected with the connecting frame (1002), one end, away from the second hydraulic rod (1001), of the connecting frame (1002) is fixedly connected with the T-shaped block (1003), the surface of the T-shaped block (1003) is slidably connected with the slide rail (1004), one side in the slide rail (1004) is slidably connected with the slide rod (1005), one end of the slide rod (1005) is fixedly connected with the fixed shell (9) through the connecting plate, one end, away from the slide rod (1005), of the slide rail (1004) penetrates to the outside of the fixed shell (9) and is fixedly connected with the special-shaped plate (1006), one side of the special-shaped plate (1006) is fixedly connected with the clasp ring (1007).

7. The camshaft profile surface precision grinding apparatus according to claim 6, characterized by: One side of the clasp ring (1007) is fixedly connected with the rubber pad (1008), and the special-shaped plate (1006) is fixedly connected with the reinforcing block (1009) between one side and the slide rail (1004).

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