Polishing device for boring hole of connecting rod

Abstract

The invention relates to the field of hole polishing, and discloses a connecting rod boring polishing device which comprises a polishing mechanism, a clamping mechanism and a sensor unit, the clamping mechanism comprises a fixed base, a guide column is arranged on the upper surface of the fixed base, and a lifting base and a first spring located between the lifting base and the fixed base are arranged outside the guide column in a sleeving mode; a sliding seat is arranged on the lifting seat in a sliding mode in the horizontal direction, a guide rod extends from one end of the sliding seat, the tail end of the guide rod penetrates through a guide hole formed in the lifting seat and then is provided with a fixing ring, the guide rod is sleeved with two second springs located on the two sides of the guide hole respectively, a clamp is arranged on the upper surface of the sliding seat, and the initial position of the clamp serves as the origin of coordinates. A plane coordinate system can be constructed with the moving direction of the sliding base as the x axis and the vertical direction as the y axis, and the sensor unit is used for monitoring coordinate values of the clamp in the plane coordinate system.

Description

Technical Field

[0001] This invention relates to the field of grinding, specifically to the field of hole grinding, and particularly to a grinding device for connecting rod boring. Background Technology

[0002] Grinding refers to the finishing process performed on the surface of a part. The connecting rod is the heart of the engine, operating in harsh environments of high speed, high pressure, and high temperature. The quality of its holes directly determines the engine's performance, lifespan, and reliability. Therefore, high-precision final machining of the holes on the connecting rod (mainly the big end hole and piston pin hole) is essential.

[0003] In existing grinding technology, the connecting rod is usually clamped by a fixture, and then the grinding tool is set between the grinding tool and the connecting rod hole before grinding. This method has some shortcomings, specifically: 1. The grinding tool needs to rotate around the axis of the connecting rod hole to grind the hole wall. Therefore, tool setting is required before grinding, and the accuracy of tool setting is one of the important factors affecting the subsequent grinding quality. In existing technologies, there are several methods for tool setting when grinding hole walls: First, manual or semi-automatic tool setting is performed using tools such as dial indicators, edge finders, and plug gauges; second, automatic tool setting is achieved by relying on sensors and program control. The former is cumbersome and has low precision, while the latter relies on sensors and programs. Errors in the program or poor sensor precision will affect the accuracy of tool setting. 2. Clamping the connecting rod with a fixture can lead to vibration if the fixture is not stable enough during subsequent grinding, thus affecting the final grinding accuracy. The impact of vibration on grinding accuracy is not visible to the naked eye. If each component is ground for quality inspection, the workload will increase significantly.

[0004] To address the aforementioned problems, this invention proposes a grinding device for connecting rod boring. Summary of the Invention

[0005] To address the problems mentioned in the background above, the present invention provides a grinding device for connecting rod boring.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A grinding device for connecting rod boring includes a grinding mechanism, a clamping mechanism, and a sensor unit; The clamping mechanism includes a fixed base, a guide post on the upper surface of the fixed base, a lifting seat and a spring located between the lifting seat and the fixed base; The fixed base is equipped with a limiting component for restricting or removing the restriction on the movement of the lifting seat; A slide block is slidably mounted on the lifting seat in the horizontal direction. A guide rod extends from one end of the slide block. The extension direction of the guide rod is parallel to the sliding direction of the slide block. A fixing ring is provided after the end of the guide rod passes through the guide hole provided on the lifting seat. A second spring is sleeved on the outside of the guide rod. There are two springs, which are located on both sides of the guide hole respectively. A clamp is provided on the upper surface of the slide block. The lifting platform is equipped with a limiting component 2 for restricting or removing the restriction on the movement of the slide; With the initial position of the fixture as the origin, the direction of movement of the slide as the x-axis, and the vertical direction as the y-axis, a planar coordinate system can be constructed. The sensor unit is used to monitor the coordinate values ​​of the fixture in the planar coordinate system.

[0008] Furthermore, the bottom of the lifting seat extends with a protruding plate, and a pressure plate is provided on each side of the protruding plate. A cylinder is provided on each side of the two pressure plates facing away from each other, and the output end of the cylinder is connected to the corresponding pressure plate.

[0009] Furthermore, a vertically arranged cylinder two is provided at the bottom of the lifting seat, and a top plate is provided at the output end of the cylinder two, which is located below the slide.

[0010] Furthermore, the grinding mechanism includes a cantilever bracket and a traction assembly, the traction assembly being used to move the cantilever bracket within a three-dimensional coordinate system; The cantilever bracket has a vertically arranged main shaft and a first motor for driving the main shaft to rotate at the suspension end. A mounting bracket is provided at the bottom of the main shaft, and a grinding component is provided on the mounting bracket.

[0011] Furthermore, the traction assembly includes a movable bracket and a first linear module for driving the movable bracket to move. The moving direction of the movable bracket is parallel to the sliding direction of the slide block. The movable bracket is provided with a column bracket and a second linear module for driving the column bracket to move. The moving direction of the column bracket is horizontally arranged and perpendicular to the moving direction of the movable bracket. The cantilever bracket and the column bracket form a sliding connection in the vertical direction. The column bracket is provided with a third linear module for driving the cantilever bracket to move.

[0012] Furthermore, the grinding assembly includes a rotating shaft and a tool setting shaft arranged coaxially. Initially, both are arranged horizontally and perpendicular to the sliding direction of the slide. A conical tool setting head is coaxially provided at the end of the tool setting shaft that is away from the rotation shaft. The end of the tool setting head with a larger diameter is connected to the tool setting shaft. A rotating support is provided at the end of the rotation shaft that is away from the tool setting shaft. A transmission shaft and a first lead screw are arranged in parallel on the rotating support, and both are perpendicular to the rotation shaft. A grinding bracket is slidably mounted on the rotating bracket. The direction of movement of the grinding bracket is parallel to the axis of the first lead screw. The grinding bracket and the first lead screw are connected by a thread. A grinding shaft is installed on the side of the grinding bracket away from the rotating shaft. The grinding shaft is parallel to the rotating shaft, and a grinding head is provided on the outside of the grinding shaft. The grinding shaft and the transmission shaft are connected by a power transmission component.

[0013] Furthermore, the driving component of the power transmission component is mounted on the transmission shaft via a spline, and when the driving component moves along with the grinding bracket, the transmission shaft continuously outputs power to the driving component via the spline.

[0014] Furthermore, the rotating shaft is hollow and has an intermediate shaft inside, the intermediate shaft is hollow and has a connecting shaft inside, and one end of the connecting shaft is fixedly connected to the tool setting shaft. The transmission shaft and the connecting shaft form a power connection, and the first lead screw and the intermediate shaft form a power connection. The mounting bracket is equipped with a second motor for driving the rotary shaft to rotate, a third motor for driving the intermediate shaft to rotate, and a fourth motor for driving the tool setting shaft to rotate.

[0015] Furthermore, a counterweight is slidably mounted on the rotating support, the counterweight moves in a direction parallel to the moving direction of the grinding support, and both are located on opposite sides of the rotating shaft. A second lead screw is installed on the rotating bracket. The second lead screw is coaxial with the first lead screw, and the second lead screw is connected to the intermediate shaft for power connection.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows: In this case, tool setting is achieved by rotating and moving the tool head simultaneously, ensuring that the axis of the grinding head's revolution trajectory coincides with the axis of the connecting rod's hole, making the entire tool setting process convenient and fast. II. In this case, the integrated solution of floating fixture, sensor unit, tool setting head, and grinding head achieves the following technical effects: Technical benefits 1. Self-centering tool setting is achieved by using a tool setting head, which can adapt to the grinding of connecting rods of different sizes. Different sizes refer to the length, width and thickness of the connecting rod. Therefore, it can achieve high-precision centering and alignment of holes for connecting rods of different specifications. Technical effect 2: The grinding action of the grinding head's rotation and revolution can make the grinding trajectory of the grinding head form a standard circle, further improving the grinding quality; Because the distance between the grinding head and the rotating shaft is adjustable, it can adapt to high-precision grinding of connecting rod holes with different diameters; Technical effect 3: Before grinding, after completing the self-centering tool setting, the coordinate values ​​(x1, y1) of the fixture in the planar coordinate system are detected by the sensor unit. After grinding, the coordinates (x2, y2) of the fixture in the planar coordinate system are detected by the sensor unit. The impact of the vibration generated by grinding on the grinding result is verified by checking whether the values ​​of x2-x1 and y2-y1 are within the preset range, thereby ensuring the accuracy of grinding. Then, the self-centering tool setting is repeated once. The coordinate values ​​(x3, y3) of the fixture in the planar coordinate system are detected by the sensor unit. Based on whether the values ​​of x3-x1 and y3-y1 are within the preset range, it can be determined whether there is any offset of the axis of the hole of the connecting rod during the grinding process. That is, the coaxiality is used to further verify whether the grinding result is qualified. In summary, the above dual verification can enable self-inspection of the polishing results and ensure that the polishing results meet quality standards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure during tool setting according to the present invention; Figure 2 This is a schematic diagram of the structure during the polishing process of the present invention; Figure 3 This is a schematic diagram of the grinding mechanism; Figure 4 A schematic diagram of the spindle, mounting bracket, and grinding components; Figure 5 This is a structural diagram of the polishing component; Figure 6 A cross-sectional view of the polished component; Figure 7 Schematic diagram of the clamping mechanism Figure 1 ; Figure 8 Schematic diagram of the clamping mechanism Figure 2 .

[0018] The labels in the attached diagram are: 100. Grinding mechanism; 101. First linear module; 102. Movable support; 103. Second linear module; 104. Column support; 105. Third linear module; 106. Cantilever support; 107. First motor; 108. Spindle; 109. Mounting bracket; 110. Second motor; 111. Third motor; 112. Fourth motor; 113. Tool setting axis; 114. Tool setting head; 115. Rotary axis; 116. Rotary support; 117. Connecting shaft; 118. Intermediate 119. Transmission shaft; 120. First lead screw; 121. Grinding bracket; 122. Grinding shaft; 123. Grinding head; 124. Second lead screw; 125. Counterweight; 200. Clamping mechanism; 201. Fixed base; 202. Guide column; 203. Lifting seat; 204. Spring 1; 205. Convex plate; 206. Pressure plate; 207. Cylinder 1; 208. Slide; 209. Guide rod; 210. Spring 2; 211. Clamp; 212. Cylinder 2; 213. Top plate. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] Reference Figures 1-8 A grinding device for connecting rod boring includes a grinding mechanism 100 and a clamping mechanism 200.

[0021] I. Clamping Mechanism 200 Reference Figure 7 and Figure 8 The clamping mechanism 200 includes a fixed base 201, a guide post 202 is provided on the upper surface of the fixed base 201, a lifting seat 203 is sleeved on the outside of the guide post 202, and a spring 204 is located between the lifting seat 203 and the fixed base 201.

[0022] Furthermore, the bottom of the lifting seat 203 extends with a protruding plate 205, and a pressure plate 206 is provided on each side of the protruding plate 205. A cylinder 207 is provided on each side of the two pressure plates 206 facing away from each other. The output end of the cylinder 207 is connected to the corresponding pressure plate 206. The cylinder 207 can drive the pressure plate 206 to move closer to or away from the protruding plate 205, thereby clamping or releasing the protruding plate 205, so that the movement of the lifting seat 203 is restricted or unrestricted.

[0023] A slide block 208 is slidably mounted on the lifting seat 203 in the horizontal direction. A guide rod 209 extends from one end of the slide block 208. The extension direction of the guide rod 209 is parallel to the sliding direction of the slide block 208. A fixing ring is provided after the end of the guide rod 209 passes through the guide hole provided on the lifting seat 203. A second spring 210 is sleeved on the outside of the guide rod 209. Two springs 210 are provided and are located on both sides of the guide hole respectively.

[0024] The upper surface of the slide 208 is provided with a clamp 211 for clamping the connecting rod. The clamp 211 can be implemented using existing clamping technologies, such as bench vise technology, etc., which will not be elaborated here.

[0025] The bottom of the lifting seat 203 is provided with a vertically arranged cylinder 212. The output end of the cylinder 212 is provided with a top plate 213, which is located below the slide 208. The cylinder 212 can drive the top plate 213 to move up or down, thereby abutting against or releasing the abutment against the slide 208, thus restricting or removing the restriction on the movement of the slide 208.

[0026] II. Grinding mechanism 100 Reference Figures 3-6 The grinding mechanism 100 includes a cantilever bracket 106 and a traction component, which is used to move the cantilever bracket 106 in a three-dimensional coordinate system.

[0027] Furthermore, the traction assembly includes a movable support 102 and a first linear module 101 for driving the movable support 102 to move. The moving direction of the movable support 102 is parallel to the sliding direction of the slide block 208. A column support 104 and a second linear module 103 for driving the column support 104 to move are provided on the movable support 102. The moving direction of the column support 104 is horizontally arranged and perpendicular to the moving direction of the movable support 102. The cantilever support 106 and the column support 104 form a sliding connection in the vertical direction. A third linear module 105 for driving the cantilever support 106 to move is provided on the column support 104. The linear modules mentioned in this case can all be implemented using existing lead screw linear movement technology, which will not be elaborated here. Through the cooperation of the three linear modules, the cantilever support 106 can be driven to move in the three-dimensional coordinate system.

[0028] The cantilever bracket 106 has a vertically arranged main shaft 108 and a first motor 107 for driving the main shaft 108 to rotate. The first motor 107 adopts servo motor technology.

[0029] A mounting bracket 109 is provided at the bottom of the spindle 108, and a grinding component is provided on the mounting bracket 109.

[0030] Specifically, refer to Figure 5 and Figure 6The grinding assembly includes a rotating shaft 115 and a tool setting shaft 113 arranged coaxially. Initially, both are parallel to the moving direction of the column support 104.

[0031] The rotating shaft 115 is hollow and has an intermediate shaft 118 inside it. The intermediate shaft 118 is also hollow and has a connecting shaft 117 inside it. One end of the connecting shaft 117 is fixedly connected to the tool setting shaft 113.

[0032] A conical tool setting head 114 is coaxially provided at the end of the tool setting shaft 113 that is away from the rotation shaft 115. The end of the tool setting head 114 with a larger diameter is connected to the tool setting shaft 113.

[0033] A rotating support 116 is provided at the end of the rotating shaft 115 that is away from the tool setting shaft 113.

[0034] The rotating bracket 116 is provided with a transmission shaft 119 and a first lead screw 120 arranged in parallel, both of which are perpendicular to the rotating shaft 115.

[0035] The transmission shaft 119 and the connecting shaft 117 form a power connection, and the first lead screw 120 and the intermediate shaft 118 form a power connection.

[0036] A grinding bracket 121 is slidably mounted on the rotating bracket 116. The moving direction of the grinding bracket 121 is parallel to the axis of the first lead screw 120. The grinding bracket 121 and the first lead screw 120 are threadedly connected. Therefore, the rotation of the intermediate shaft 118 can drive the first lead screw 120 to rotate, thereby adjusting the position of the grinding bracket 121 on the rotating bracket 116.

[0037] A grinding shaft 122 is mounted on the side of the grinding bracket 121 away from the rotating shaft 115. The grinding shaft 122 is parallel to the rotating shaft 115, and a grinding head 123 is provided on the outside of the grinding shaft 122. Therefore, changing the position of the grinding bracket 121 on the rotating bracket 116 changes the distance between the center line of the grinding head 123 and the center line of the rotating shaft 115.

[0038] The grinding shaft 122 and the transmission shaft 119 are connected by a power transmission component. The driving component of the power transmission component is set on the transmission shaft 119 by a spline. When the driving component moves with the grinding bracket 121, the transmission shaft 119 continuously outputs power to the driving component through the spline, that is, continuously outputs power to the grinding shaft 122 and the grinding head 123.

[0039] Furthermore, refer to Figure 5 The mounting bracket 109 is equipped with a second motor 110 for driving the rotating shaft 115 to rotate, a third motor 111 for driving the intermediate shaft 118 to rotate, and a fourth motor 112 for driving the tool setting shaft 113 to rotate.

[0040] In a preferred embodiment, for the purpose of gravitational balance, refer to Figure 6 A counterweight 125 is slidably mounted on the rotating support 116. The moving direction of the counterweight 125 is parallel to the moving direction of the grinding support 121, and the two are located on opposite sides of the rotating shaft 115.

[0041] The rotating bracket 116 is also equipped with a second lead screw 124, which is coaxial with the first lead screw 120 and is also connected to the intermediate shaft 118.

[0042] The counterweight 125 is used to balance the gravity of the grinding bracket 121 and the parts set on the grinding bracket 121, so as to prevent vibration when the rotating bracket 116 rotates.

[0043] Third, this case also includes a sensor unit for monitoring the position of the clamp 211. Specifically, a planar coordinate system is constructed with the initial position of the clamp 211 as the origin, the moving direction of the slide 208 as the x-axis, and the vertical direction as the y-axis. The sensor unit is used to monitor the coordinate changes of the clamp 211 in this planar coordinate system in real time. The sensor unit can use a combination of several distance sensors, which is feasible with existing technology and will not be elaborated further.

[0044] Working principle of the invention: Step 1: Clamp the connecting rod using fixture 211, and the hole to be ground on the connecting rod is approximately coaxial with the tool setting head 114; Step 2: The fourth motor 112 drives the tool setting shaft 113 to rotate, thereby causing the tool setting head 114 to rotate. At the same time, the traction assembly drives the tool setting head 114 to move closer to the connecting rod. That is, the tool setting head 114 moves towards the hole on the connecting rod while moving. Since the tool setting head 114 is conical and the clamp 211 is floating in the plane coordinate system, the tool setting head 114 can finally be inserted into the hole of the connecting rod, making the tool setting head 114 coaxial with the hole of the connecting rod. During this process, the connecting rod and the clamp 211 will undergo corresponding position correction. That is, the cutting process is complete; The movement of the lifting seat 203 is restricted by cylinder 207 and pressure plate 206, and the movement of the slide 208 is restricted by cylinder 212 and top plate 213. After that, the clamp 211 and the connecting rod are restricted to their current positions. Simultaneously, the current coordinate values ​​(x1, y1) of the fixture 211 in the planar coordinate system are detected by the sensor unit. Step 3: Drive the cutter head 114 away from the connecting rod using the traction assembly; The first motor 107 drives the spindle 108 to rotate, and the spindle 108 rotates together with the mounting bracket 109, with a rotation angle of 180 degrees. The intermediate shaft 118 is rotated by the third motor 111, which in turn drives the first lead screw 120 to rotate, thereby changing the distance between the grinding head 123 and the rotating shaft 115. Furthermore, the radius of the grinding head 123 is r1, the distance between the center line of the grinding head 123 and the center line of the rotating shaft 115 is L, and the radius of the hole in the connecting rod is r2, so that r2 = L + r1. Since r2 and r1 are known values, r2 = L + r1 can be achieved by changing the distance between the grinding head 123 and the rotating shaft 115. Step 4: Drive the grinding head 123 into the hole of the connecting rod using the traction assembly; At the same time, the fourth motor 112 drives the tool setting shaft 113 to rotate, the tool setting shaft 113 drives the transmission shaft 119 to rotate through the connecting shaft 117, and the transmission shaft 119 drives the grinding shaft 122 and the grinding head 123 to rotate around their own axis through the power transmission component. At the same time, the second motor 110 drives the rotating shaft 115 to rotate, and the rotating shaft 115 rotates the rotating bracket 116, so that the grinding shaft 122 and the grinding head 123 revolve around the rotating shaft 115. The rotation and revolution of the grinding head 123 work together to grind the hole wall of the connecting rod. Since the revolution trajectory of the grinding head 123 is circular, the quality of the hole of the connecting rod obtained by grinding is better. After polishing, the current coordinates (x2, y2) of the fixture 211 in the planar coordinate system are detected by the sensor unit. If the values ​​of x2-x1 and y2-y1 are within the preset range, proceed to the next step; otherwise, it indicates that there are flaws in the polishing process and the polishing quality is unqualified. Its technological advantage lies in its ability to verify the impact of vibrations generated during grinding on the grinding results, thereby ensuring the precision of grinding. Step 5: Cylinder 1 207 and Cylinder 2 212 release the restriction on the lifting seat 203 and slide 208, and then repeat the tool setting in Step 2. After tool setting, the current coordinate value (x3, y3) of the fixture 211 in the plane coordinate system is detected by the sensor unit. If the values ​​of x3-x1 and y3-y1 are within the preset range, then the grinding is qualified. If they are not within the preset range, it means that there are defects in the grinding process and the grinding quality is unqualified. Its technical advantage lies in the fact that by correcting the coaxiality of the polished hole with the cutter head 114, and by detecting the coordinate value change of the fixture 211 through the sensor unit, it is possible to determine whether there is a deviation in the axis of the hole of the connecting rod during the polishing process, that is, to further verify whether the polishing result is qualified through coaxiality.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A grinding device for connecting rod boring, comprising a grinding mechanism (100) and a clamping mechanism (200), characterized in that, It also includes a sensor unit; The clamping mechanism (200) includes a fixed base (201), a guide post (202) is provided on the upper surface of the fixed base (201), a lifting seat (203) is sleeved on the outside of the guide post (202), and a spring (204) is located between the lifting seat (203) and the fixed base (201). The fixed base (201) is provided with a limiting component for restricting or removing the restriction on the movement of the lifting seat (203); A slide block (208) is slidably mounted on the lifting seat (203) in the horizontal direction. A guide rod (209) extends from one end of the slide block (208). The extension direction of the guide rod (209) is parallel to the sliding direction of the slide block (208). A fixing ring is provided after the end of the guide rod (209) passes through the guide hole provided on the lifting seat (203). A second spring (210) is sleeved on the outside of the guide rod (209). There are two springs (210) and they are located on both sides of the guide hole respectively. A clamp (211) is provided on the upper surface of the slide block (208). The lifting seat (203) is provided with a limiting component 2 for restricting or removing the restriction on the movement of the slide (208); With the initial position of the fixture (211) as the origin of the coordinate system, the moving direction of the slide (208) as the x-axis, and the vertical direction as the y-axis, a planar coordinate system can be constructed. The sensor unit is used to monitor the coordinate values ​​of the fixture (211) in the planar coordinate system.

2. The grinding device for connecting rod boring according to claim 1, characterized in that, The bottom of the lifting seat (203) extends with a protruding plate (205). A pressure plate (206) is provided on each side of the protruding plate (205). A cylinder (207) is provided on each side of the two pressure plates (206) facing away from each other. The output end of the cylinder (207) is connected to the corresponding pressure plate (206).

3. The grinding device for connecting rod boring according to claim 1, characterized in that, The bottom of the lifting seat (203) is provided with a vertically arranged cylinder two (212), and the output end of the cylinder two (212) is provided with a top plate (213), which is located below the slide (208).

4. The grinding device for connecting rod boring according to claim 1, characterized in that, The grinding mechanism (100) includes a cantilever bracket (106) and a traction assembly, which is used to move the cantilever bracket (106) in a three-dimensional coordinate system; The cantilever bracket (106) has a vertically arranged main shaft (108) and a first motor (107) for driving the main shaft (108) to rotate. The bottom of the main shaft (108) is provided with a mounting bracket (109) and a grinding component is provided on the mounting bracket (109).

5. The grinding device for connecting rod boring according to claim 4, characterized in that, The traction assembly includes a movable bracket (102) and a first linear module (101) for driving the movable bracket (102) to move. The moving direction of the movable bracket (102) is parallel to the sliding direction of the slide block (208). A column bracket (104) and a second linear module (103) for driving the column bracket (104) to move are provided on the movable bracket (102). The moving direction of the column bracket (104) is arranged horizontally and perpendicular to the moving direction of the movable bracket (102). The cantilever bracket (106) and the column bracket (104) form a sliding connection in the vertical direction. A third linear module (105) for driving the cantilever bracket (106) to move is provided on the column bracket (104).

6. The grinding device for connecting rod boring according to claim 4, characterized in that, The grinding assembly includes a rotating shaft (115) and a tool setting shaft (113) arranged coaxially. Initially, both are arranged horizontally and perpendicular to the sliding direction of the slide (208). A conical tool setting head (114) is coaxially provided at one end of the tool setting shaft (113) away from the rotation shaft (115). The larger diameter end of the tool setting head (114) is connected to the tool setting shaft (113). A rotating support (116) is provided at one end of the rotation shaft (115) away from the tool setting shaft (113). A transmission shaft (119) and a first lead screw (120) are arranged in parallel on the rotating support (116), and both are perpendicular to the rotation shaft (115). A grinding bracket (121) is slidably mounted on the rotating bracket (116). The moving direction of the grinding bracket (121) is parallel to the axis of the first lead screw (120). The grinding bracket (121) and the first lead screw (120) are connected by a thread. A grinding shaft (122) is installed on the side of the grinding bracket (121) away from the rotating shaft (115). The grinding shaft (122) is parallel to the rotating shaft (115), and a grinding head (123) is provided on the outside of the grinding shaft (122). The grinding shaft (122) and the transmission shaft (119) are connected by a power transmission component.

7. A grinding device for connecting rod boring according to claim 6, characterized in that, The driving component of the power transmission component is set on the transmission shaft (119) via a spline, and when the driving component moves with the grinding bracket (121), the transmission shaft (119) continuously outputs power to the driving component via the spline.

8. A grinding device for connecting rod boring according to claim 6, characterized in that, The rotating shaft (115) is hollow and has an intermediate shaft (118) inside. The intermediate shaft (118) is hollow and has a connecting shaft (117) inside. One end of the connecting shaft (117) is fixedly connected to the tool setting shaft (113). The transmission shaft (119) and the connecting shaft (117) form a power connection, and the first lead screw (120) and the intermediate shaft (118) form a power connection; The mounting bracket (109) is equipped with a second motor (110) for driving the rotating shaft (115) to rotate, a third motor (111) for driving the intermediate shaft (118) to rotate, and a fourth motor (112) for driving the tool setting shaft (113) to rotate.

9. A grinding device for connecting rod boring according to claim 8, characterized in that, A counterweight (125) is slidably mounted on the rotating support (116). The moving direction of the counterweight (125) is parallel to the moving direction of the grinding support (121), and the two are located on opposite sides of the rotating shaft (115). A second lead screw (124) is provided on the rotating bracket (116). The second lead screw (124) is coaxial with the first lead screw (120), and the second lead screw (124) and the intermediate shaft (118) form a power connection.

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