A fixture for grinding a connecting rod body and a connecting rod cap joint

Abstract

The utility model discloses a kind of clamps for grinding connecting rod body and the clamp for grinding connecting rod cover combined tooth, the clamp includes rack, clamping assembly and first limit block, third limit block being arranged on rack, oil cylinder group. First limit block and third limit block are respectively provided with first locating surface and third locating surface, and oil cylinder group connects clamping assembly and communicates oil circuit group. The first cover air channel, the first body air channel and the oil circuit group are opened in rack, and the first cover air channel is communicated with the second cover air channel, and the second cover air channel is opened in the first locating surface. The second body air channel is opened in third locating surface, and the first body air channel is communicated with the second body air channel, and the second body air channel is communicated with the second body air channel. Clamping assembly cooperates first locating surface and third locating surface to fix connecting rod cover and connecting rod body. The clamp can detect the clamping accuracy of connecting rod cover and connecting rod body on clamp, and then guarantee machining accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp for grinding the combined teeth of a connecting rod body and a connecting rod cap. Background Art

[0002] A connecting rod is an important transmission component in mechanical transmission, and is crucial for ensuring the normal operation of a mechanical structure. In engine technology, a connecting rod is composed of a connecting rod body and a connecting rod cap assembled through the fit between combined teeth and tooth grooves. The connecting rod converts the reciprocating motion of a piston into the rotational motion of a crankshaft and transmits the force acting on the piston set to the crankshaft. The machining accuracy of the combined teeth and the tooth grooves directly affects the overall operating performance of the engine.

[0003] In the existing milling processing technology for connecting rod tooth grooves, due to the irregular structure of the connecting rod, clamping the connecting rod with the magnetic chuck supporting the grinding machine has the technical problems of difficult positioning and being unable to achieve a specific clamping posture of the connecting rod. Therefore, it is often necessary to design a special clamp to clamp the connecting rod cap and the connecting rod body for grinding.

[0004] However, cumulative errors may exist in the processing and assembly of special clamp parts, resulting in position deviations between the connecting rod cap, the connecting rod body and the positioning components of the clamp. Even when workers clamp the connecting rod cap and the connecting rod body on the special clamp, artificial clamping errors may occur, such as offset and skew of the clamping position. All the above errors will affect the machining accuracy of the combined teeth of the connecting rod body and the connecting rod cap, and further affect the fitting accuracy between the connecting rod cap and the connecting rod body, which will directly affect the overall operating performance of the engine.

[0005] In addition, in the existing special clamp technology, an oil cylinder or an air cylinder is used to clamp the connecting rod cap and the connecting rod body. The oil pipes connected to the oil cylinder or the air pipes connected to the air cylinder are directly exposed outside the clamp, which is messy, occupies the space of the special clamp, and even interferes with the parts of the special clamp, affecting the service performance of the special clamp. Summary of the Invention

[0006] The main objective of the utility model is to provide a clamp for grinding the combined teeth of a connecting rod body and a connecting rod cap, so as to solve the technical problem set forth in the background art.

[0007] To achieve the above objective, the utility model provides a clamp for grinding the combined teeth of a connecting rod body and a connecting rod cap, comprising: a frame, a clamping assembly, and a first limiting block, a third limiting block and an oil cylinder set mounted on the frame; The first limiting block and the third limiting block are respectively provided with a first positioning surface and a third positioning surface, the clamping assembly is mounted on the oil cylinder set and abuts against the connecting rod cap and the connecting rod body; The frame has a first cover air passage that penetrates the frame, the first limiting block has a second cover air passage that penetrates the first positioning surface, the first cover air passage is connected to the second cover air passage, and the connecting rod cover abuts against the first positioning surface and the through opening of the second cover air passage on the first positioning surface. The frame has a first air passage that penetrates the frame, and the third limiting block has a second air passage that penetrates the third positioning surface. The first air passage is connected to the second air passage, and the connecting rod abuts against the third positioning surface and the through-hole of the second air passage on the third positioning surface. The frame is provided with an oil passage group that runs through the frame, and the oil passage group is connected to the oil cylinder group; The clamping assembly, in conjunction with the first positioning surface and the frame, fixes the connecting rod cover and, in conjunction with the third positioning surface, fixes the connecting rod body.

[0008] In an optional embodiment, the frame includes a base, an upright plate, a first support plate, a second support plate, a mounting plate, a first mounting seat, a second mounting seat, a third mounting seat, and a fourth mounting seat; The upright plate is mounted on the base, the first support plate and the second support plate are mounted on the base and fixedly connected to one side of the upright plate, and the mounting plate is mounted on the first support plate and the second support plate and fixedly connected to one side of the upright plate. The first mounting base and the second mounting base are mounted on the mounting plate and are arranged opposite to each other in a second direction; the third mounting base is mounted on the mounting plate and supports the connecting rod cover in a third direction; the fourth mounting base is mounted on the mounting plate and is fixedly connected to one side of the upright plate. The hydraulic cylinder assembly includes a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, and a fourth hydraulic cylinder. The first hydraulic cylinder is mounted on a first mounting base, the second hydraulic cylinder is mounted on a second mounting base, the third hydraulic cylinder is mounted on the first mounting base, and the fourth hydraulic cylinder is mounted on a fourth mounting base. The first direction is parallel to the X-axis, the second direction is parallel to the Y-axis, and the third direction is parallel to the Z-axis.

[0009] In an optional embodiment, the first cover air passage includes a base segment penetrating the base, a first support plate segment penetrating the first support plate, a mounting plate segment penetrating the mounting plate, and a fourth mounting seat segment penetrating the fourth mounting seat. The base segment is connected to the first support plate segment, the first support plate segment is connected to the mounting plate segment, the mounting plate segment is connected to the fourth mounting seat segment, and the fourth mounting seat segment is connected to the second cover air passage.

[0010] In an optional embodiment, the oil circuit assembly includes a first cover oil inlet circuit and a first cover oil return circuit passing through the base, a second cover oil inlet circuit and a second cover oil return circuit passing through the second support plate, a third cover oil inlet circuit and a third cover oil return circuit passing through the mounting plate, and a fourth cover oil inlet circuit and a fourth cover oil return circuit passing through the first mounting base. The first cover oil inlet is connected to the second cover oil inlet, the second cover oil inlet is connected to the third cover oil inlet, the third cover oil inlet is connected to the fourth cover oil inlet, and the fourth cover oil inlet is connected to the third oil cylinder; The first cover oil return circuit is connected to the second cover oil return circuit, the second cover oil return circuit is connected to the third cover oil return circuit, the third cover oil return circuit is connected to the fourth cover oil return circuit, and the fourth cover oil return circuit is connected to the third oil cylinder. The oil circuit assembly also includes a fifth cover oil inlet circuit that penetrates the mounting plate, a sixth cover oil inlet circuit and a sixth cover oil return circuit that penetrate the first mounting base, and a seventh cover oil inlet circuit and a seventh cover oil return circuit that penetrate the second mounting base. The fifth cover oil inlet circuit is connected to the sixth cover oil inlet circuit, the sixth cover oil inlet circuit is connected to the first oil cylinder, the third cover return oil circuit is connected to the sixth cover return oil circuit, and the sixth cover return oil circuit is connected to the first oil cylinder. The fifth cover oil inlet circuit is connected to the seventh cover oil inlet circuit, the seventh cover oil inlet circuit is connected to the second oil cylinder, the third cover return oil circuit is connected to the seventh cover return oil circuit, and the seventh cover return oil circuit is connected to the second oil cylinder; The oil circuit assembly also includes an eighth cover oil inlet circuit that penetrates the mounting plate, a ninth cover oil inlet circuit that penetrates the fourth mounting base, and a ninth cover return circuit. The eighth cover oil inlet circuit is connected to the ninth cover oil inlet circuit, the ninth cover oil inlet circuit is connected to the fourth oil cylinder, the third cover return circuit is connected to the ninth cover return circuit, and the ninth cover return circuit is connected to the fourth oil cylinder.

[0011] In an optional embodiment, the cross-sectional area of ​​the second cover air passage is smaller than the cross-sectional area of ​​the fourth mounting segment, and the cross-sectional area of ​​the fourth mounting segment is smaller than the cross-sectional areas of the base segment, the first support plate segment, and the mounting plate segment.

[0012] In an alternative embodiment, the third limiting block is installed on the side of the upright plate opposite to the connecting rod cover; The cylinder assembly also includes a fifth cylinder, a sixth cylinder, and a seventh cylinder. The fifth cylinder is mounted on the vertical plate, the sixth cylinder is mounted on the vertical plate, and the seventh cylinder is mounted on the vertical plate.

[0013] In an alternative embodiment, the first body airway passes through the upright plate and connects to the second body airway.

[0014] In an optional embodiment, the oil circuit group further includes a first body oil inlet circuit penetrating the base, a second body oil inlet circuit penetrating the vertical plate, and a body return oil circuit penetrating the vertical plate. The first body oil inlet circuit is connected to the second body oil inlet circuit, the second body oil inlet circuit is connected to the seventh oil cylinder, and the body return oil circuit is connected to the seventh oil cylinder. The oil circuit assembly also includes a third body oil inlet circuit that runs through the vertical plate, the third body oil inlet circuit being connected to the fifth oil cylinder and the sixth oil cylinder, and the body return oil circuit being connected to the fifth oil cylinder and the sixth oil cylinder.

[0015] In an alternative embodiment, the cross-sectional area of ​​the second body airway is smaller than that of the first body airway.

[0016] In an optional embodiment, a jig for grinding the connecting rod body and connecting rod cap mating teeth further includes a first air nozzle, a second air nozzle, a first oil nozzle, a second oil nozzle, a third oil nozzle, a fourth oil nozzle, a fifth oil nozzle, a sixth oil nozzle, and a seventh oil nozzle; The first air nozzle is mounted on the base and connected to the base section; the second air nozzle is mounted on the upright plate and connected to the first body air passage. The first oil nozzle is installed on the base and connected to the first cover oil inlet circuit; the second oil nozzle is installed on the base and connected to the first cover oil return circuit; the third oil nozzle is installed on the mounting plate and connected to the fifth cover oil inlet circuit; and the fourth oil nozzle is installed on the mounting plate and connected to the eighth cover oil inlet circuit. The fifth oil nozzle is installed on the base and connected to the first body oil inlet circuit; the sixth oil nozzle is installed on the upright plate and connected to the body return oil circuit; the seventh oil nozzle is installed on the upright plate and connected to the third body oil inlet circuit. The first air nozzle and the second air nozzle are connected to an air testing device, and the first oil nozzle, the second oil nozzle, the third oil nozzle, the fourth oil nozzle, the fifth oil nozzle, the sixth oil nozzle, and the seventh oil nozzle are connected to a hydraulic device.

[0017] Compared with the prior art, the present invention has the following technical effects: This utility model relates to a fixture for grinding the connecting rod body and connecting rod cap mating teeth. It employs a first limiting block and a third limiting block, with a first positioning surface and a third positioning surface respectively provided on the first and third limiting blocks. The flat surface of the connecting rod cap abuts against the first positioning surface, and the flat surface of the connecting rod body abuts against the third positioning surface. A first cover air passage and a second cover air passage are also provided, with the second cover air passage penetrating the first positioning surface and the first cover air passage connecting to a gas detection device. A first body air passage and a second body air passage are also provided, with the second body air passage penetrating the third positioning surface and the first body air passage connecting to the gas detection device.

[0018] Test gases are input into the first cover air passage and the first body air passage respectively. By observing the pressure curve changes of the gas testing equipment, it is determined whether there is any deviation in the clamping position of the connecting rod cover and the connecting rod body in the fixture, so as to ensure the clamping accuracy of the fixture and thus ensure the machining accuracy of the connecting rod body and the connecting rod cover mating teeth.

[0019] This utility model relates to a fixture for grinding connecting rod bodies and connecting rod cap mating teeth. The fixture uses a hydraulic cylinder to clamp the connecting rod body and connecting rod cap, and the hydraulic circuit assembly, as well as the first cap air passage, second cap air passage, first body air passage, and second body air passage, are provided on the fixture parts. This eliminates the need for oil pipes and air pipes, avoiding the messy arrangement of oil pipes and air pipes, which occupy the space of the dedicated fixture and interfere with the fixture parts, thus improving the performance of the fixture. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of the connecting rod cap and connecting rod body. Figure 2 This is a schematic diagram of the structure of the first cover air passage, the second cover air passage, the first body air passage, the second body air passage, and the oil passage assembly of a fixture for grinding connecting rod body and connecting rod cover mating teeth according to the present invention. Figure 3 This is a schematic diagram of the structure of a clamp for grinding the connecting rod body and connecting rod cap mating teeth according to the present invention; Figure 4 This is an exploded view of a fixture for grinding connecting rod body and connecting rod cap mating teeth according to the present invention. Figure 5 This is a structural schematic diagram of the first cover airway, the second cover airway, the first body airway, and the second body airway; Figure 6 A schematic diagram of the hydraulic circuit assembly connecting the third hydraulic cylinder; Figure 7 A schematic diagram of the structure of a portion of the hydraulic circuit group connecting the first hydraulic cylinder, the second hydraulic cylinder, and the fourth hydraulic cylinder; Figure 8 This is a schematic diagram of a portion of the hydraulic circuit connecting the fifth, sixth, and seventh hydraulic cylinders.

[0022] Explanation of icon numbers: 100. A jig for grinding the connecting rod body and connecting rod cap mating teeth; 1. Frame; 101. Base; 102. Vertical plate; 103. First support plate; 104. Second support plate; 105. Mounting plate; 106. First mounting seat; 107. Second mounting seat; 108. Third mounting seat; 109. Fourth mounting bracket; 2. Clamping assembly; 201. First connecting rod; 202. First support rod; 203. First pressure block; 204. Second connecting rod; 205. Second support rod; 206. Second pressure block; 207. Third pressure block; 208. Fourth connecting rod; 209. Fourth support rod; 210. Fourth pressure block; 211. Fifth connecting rod; 212. Fifth support rod; 213. Fifth pressure block; 214. Sixth connecting rod; 215. Sixth support rod; 216. Sixth pressure block; 217. Seventh connecting rod; 218. Seventh support rod; 219. Seventh pressure block; 3. First limiting block; 301. First positioning surface; 4. Third limiting block; 401. Third positioning surface; 5. Hydraulic cylinder assembly; 501, First hydraulic cylinder; 502, Second hydraulic cylinder; 503, Third hydraulic cylinder; 504, Fourth cylinder; 505, Fifth cylinder; 506, Sixth cylinder; 507, Seventh cylinder; 6. Second limiting block; 601. Second positioning surface; 7. Fourth limiting block; 701. Fourth positioning surface; 8. Limiting post; 9. First air nozzle; 10. Second air nozzle; 11. First oil nozzle; 12. Second oil nozzle; 13. Third oil nozzle; 14. Fourth oil nozzle; 15. Fifth oil nozzle; 16. Sixth oil nozzle; 17. The seventh oil nozzle; 200. Connecting rod cap; 300. Connecting rod body; 350. Mounting hole; 400. First cover air passage; 410. Base section; 420. First support plate section; 430. Mounting plate section; 440. Fourth mounting section; 500. Second cover air passage; 600. First body air passage; 700. Second body air passage; 800. Oil circuit assembly; 820. First cover oil inlet circuit; 821. First cover oil return circuit; 822. Second cover oil inlet passage; 823. Second cover oil return passage; 824. Third cover oil inlet passage; 825. Third cover oil return line; 826. Fourth cover oil inlet line; 827. Fourth cover oil return line; 830. Oil inlet passage of the fifth cover; 832. Oil inlet passage of the sixth cover; 833. Oil return passage of the sixth cover; 834. Oil inlet passage of the seventh cover; 835. Oil return passage of the seventh cover; 840. Oil inlet passage of the eighth cover; 841. Oil inlet passage of the ninth cover; 842. Oil return passage of the ninth cover; 850. First body oil inlet circuit; 851. Second body oil inlet circuit; 852. Body return oil circuit; 860. Third-body oil inlet circuit; 900, mating teeth. The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] 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.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] Please refer to Figures 1-8 This utility model proposes a fixture 100 for grinding connecting rod body and connecting rod cap mating teeth.

[0027] Please refer to Figures 1-3 In this embodiment of the utility model, the fixture 100 for grinding the connecting rod body and connecting rod cap teeth includes a frame 1, a clamping assembly 2, and a first limiting block 3, a third limiting block 4, and a hydraulic cylinder assembly 5 mounted on the frame 1.

[0028] The first limiting block 3 and the third limiting block 4 are respectively provided with a first positioning surface 301 and a third positioning surface 401. The clamping assembly 2 is installed on the cylinder assembly 5 and abuts against the connecting rod cover 200 and the connecting rod body 300. The frame 1 has a first cover air passage 400 that penetrates the frame 1, and the first limiting block 3 has a second cover air passage 500 that penetrates the first positioning surface 301. The first cover air passage 400 connects to the second cover air passage 500. The connecting rod cover 200 abuts against the first positioning surface 301 and the second cover air passage 500 through the opening of the first positioning surface 301.

[0029] The frame 1 has a first air passage 600 that penetrates the frame 1, and the third limiting block 4 has a second air passage 700 that penetrates the third positioning surface 401. The first air passage 600 is connected to the second air passage 700, and the connecting rod body 300 abuts against the third positioning surface 401 and the through opening of the second air passage 700 in the third positioning surface 401.

[0030] The frame 1 has an oil passage assembly 800 that runs through the frame 1 and connects to the oil cylinder assembly. The clamping assembly 2, in conjunction with the first positioning surface 301, fixes the connecting rod cover 200 and, in conjunction with the third positioning surface 401, fixes the connecting rod body 300.

[0031] Please refer to Figures 3-4 Specifically, the frame 1 includes a base 101, an upright plate 102, a first support plate 103, a second support plate 104, a mounting plate 105, a first mounting base 106, a second mounting base 107, a third mounting base 108, and a fourth mounting base 109. The upright plate 102 is mounted on the base 101 by screws. The first support plate 103 and the second support plate 104 are both mounted on the base 101 by screws and are fixedly connected to one side of the upright plate 102 by screws. The mounting plate 105 is mounted on the first support plate 103 and the second support plate 104 by screws and is fixedly connected to one side of the upright plate 102 by screws. The first mounting base 106 and the second mounting base 107 are both mounted on the mounting plate 105 by means of screw connection and are arranged opposite to each other in the second direction; the third mounting base 108 is mounted on the mounting plate 105 by means of screw connection and supports the connecting rod cover 200 in the third direction; the fourth mounting base 109 is mounted on the mounting plate 105 by means of screw connection and is fixedly connected to one side of the upright plate 102 by means of screw connection.

[0032] Please refer to Figures 3-4A fixture 100 for grinding the connecting rod body and connecting rod cap mating teeth further includes a second limiting block 6, which is mounted on a second mounting base 107 by screws and has a second positioning surface 601. The second positioning surface 601 is perpendicular to a second direction and abuts against the connecting rod cap 200. A first limiting block 3 is also mounted on a fourth mounting base 109 by screws, and the first positioning surface 301 is perpendicular to a first direction.

[0033] The clamping assembly 2 includes a first connecting rod 201, a first support rod 202, a first pressure block 203, a second connecting rod 204, a second support rod 205, a second pressure block 206, a third pressure block 207, a fourth connecting rod 208, a fourth support rod 209, and a fourth pressure block 210. The hydraulic cylinder assembly 5 includes a first hydraulic cylinder 501, a second hydraulic cylinder 502, a third hydraulic cylinder 503, and a fourth hydraulic cylinder 504.

[0034] The first hydraulic cylinder 501 is mounted on the first mounting base 106 by means of screw connection. The output shaft of the first hydraulic cylinder 501 extends along the first direction. One end of the first connecting rod 201 is rotatably connected to the output shaft of the first hydraulic cylinder 501 by means of hinge connection, and the other end is connected to the first pressure block 203 by means of screw connection. The two ends of the first support rod 202 are respectively rotatably connected to the cylinder body of the first hydraulic cylinder 501 and the first connecting rod 201 by means of hinge connection. The first pressure block 203 is arranged opposite to the first positioning surface 301 and abuts against the connecting rod cover 200.

[0035] The second hydraulic cylinder 502 is mounted on the second mounting base 107 by means of screw connection. The output shaft of the second hydraulic cylinder 502 extends along the first direction. One end of the second connecting rod 204 is rotatably connected to the output shaft of the second hydraulic cylinder 502 by means of hinge connection, and the other end is connected to the second pressure block 206 by means of screw connection. The two ends of the second support rod 205 are respectively rotatably connected to the cylinder body of the second hydraulic cylinder 502 and the second connecting rod 204 by means of hinge connection. The second pressure block 206 is arranged opposite to the first positioning surface 301 and abuts against the connecting rod cover 200.

[0036] The third cylinder 503 is mounted on the first mounting base 106 by screw connection. The output shaft of the third cylinder 503 extends in the second direction. The third pressure block 207 is mounted on the output shaft of the third cylinder 503 by thread connection and is positioned opposite to the second positioning surface 601, abutting against the connecting rod cover 200. The fourth cylinder 504 is mounted on the fourth mounting base 109 by screw connection. The output shaft of the fourth cylinder 504 extends in the third direction. One end of the fourth connecting rod 208 is rotatably connected to the output shaft of the fourth cylinder 504 by hinge connection, and the other end is connected to the fourth pressure block 210 by screw connection. The two ends of the fourth support rod 209 are rotatably connected to the cylinder body of the fourth cylinder 504 and the fourth connecting rod by hinge connection, respectively. The fourth pressure block 210 is positioned opposite to the third mounting base 108 in the third direction and abuts against the connecting rod body 300.

[0037] The first direction, the second direction, and the third direction are all perpendicular to each other. The first direction is parallel to the X-axis, the second direction is parallel to the Y-axis, and the third direction is parallel to the Z-axis.

[0038] Please refer to Figures 2-5 The first cover air passage 400 includes a base section 410 penetrating the base 101, a first support plate section 420 penetrating the first support plate 103, a mounting plate section 430 penetrating the mounting plate 105, and a fourth mounting seat section 440 penetrating the fourth mounting seat 109. The base section 410 connects to the first support plate section 420, the first support plate section 420 connects to the mounting plate section 430, the mounting plate section 430 connects to the fourth mounting seat section 440, and the fourth mounting seat section 440 connects to the second cover air passage 500. The end of the base section 410 away from the first support plate section 420 penetrates the base 101 and connects to an air detection device (not shown in the figure).

[0039] Please refer to Figures 2-4 and Figure 6 The oil circuit assembly 800 includes a first cover oil inlet circuit 820 and a first cover oil return circuit 821 passing through the base 101, a second cover oil inlet circuit 822 and a second cover oil return circuit 823 passing through the second support plate 104, a third cover oil inlet circuit 824 and a third cover oil return circuit 825 passing through the mounting plate 105, and a fourth cover oil inlet circuit 826 and a fourth cover oil return circuit 827 passing through the first mounting base 106.

[0040] The first cover oil inlet 820 is connected to the second cover oil inlet 822, the second cover oil inlet 822 is connected to the third cover oil inlet 824, the third cover oil inlet 824 is connected to the fourth cover oil inlet 826, and the fourth cover oil inlet 826 is connected to the third oil cylinder 503.

[0041] The first cover oil return line 821 connects to the second cover oil return line 823, the second cover oil return line 823 connects to the third cover oil return line 825, the third cover oil return line 825 connects to the fourth cover oil return line 827, and the fourth cover oil return line 827 connects to the third oil cylinder 503.

[0042] The end of the first cover oil inlet passage 820 away from the second cover oil inlet passage 822 passes through the base 101 and is connected to the hydraulic equipment. The end of the first cover oil return passage 821 away from the second cover oil return passage 823 passes through the base 101 and is connected to the hydraulic equipment (not shown in the figure).

[0043] Please refer to Figures 2-4 and Figure 7 The oil circuit assembly 800 also includes a fifth cover oil inlet circuit 830 that passes through the mounting plate 105, a sixth cover oil inlet circuit 832 and a sixth cover oil return circuit 833 that pass through the first mounting base 106, and a seventh cover oil inlet circuit 834 and a seventh cover oil return circuit 835 that pass through the second mounting base 107.

[0044] The fifth cover oil inlet 830 is connected to the sixth cover oil inlet 832, the sixth cover oil inlet 832 is connected to the first oil cylinder 501, the third cover return oil line 825 is connected to the sixth cover return oil line 833, and the sixth cover return oil line 833 is connected to the first oil cylinder 501.

[0045] The fifth cover oil inlet 830 is connected to the seventh cover oil inlet 834, the seventh cover oil inlet 834 is connected to the second oil cylinder 502, the third cover return oil line 825 is connected to the seventh cover return oil line 835, and the seventh cover return oil line 835 is connected to the second oil cylinder 502.

[0046] The third cover return oil passage 825 is connected to the third cover return oil passage 825; the end of the fifth cover oil passage 830 away from the sixth cover oil passage 832 and the seventh cover oil passage 834 passes through the mounting plate 105 and is connected to the hydraulic equipment.

[0047] Please refer to Figures 2-4 and Figure 7 The oil circuit assembly 800 also includes an eighth cover oil inlet circuit 840 that penetrates the mounting plate 105, a ninth cover oil inlet circuit 841 that penetrates the fourth mounting base 109, and a ninth cover return oil circuit 842. The eighth cover oil inlet circuit 840 is connected to the ninth cover oil inlet circuit 841, the ninth cover oil inlet circuit 841 is connected to the fourth oil cylinder 504, the third cover return oil circuit 825 is connected to the ninth cover return oil circuit 842, and the ninth cover return oil circuit 842 is connected to the fourth oil cylinder 504.

[0048] The end of the eighth cover oil inlet 840 that is away from the ninth cover oil return 842 passes through the mounting plate 105 and is connected to the hydraulic equipment.

[0049] The cross-sectional area of ​​the second cover air passage 500 is smaller than that of the first cover air passage 400. Specifically, the cross-sectional area of ​​the second cover air passage 500 is smaller than that of the fourth mounting section 440, and the cross-sectional area of ​​the fourth mounting section 440 is smaller than that of the base section 410, the first support plate section 420, and the mounting plate section 430. When the gas detection equipment supplies gas to the first cover air passage 400 and the second cover air passage 500, the second cover air passage 500 can obtain higher pressure, thereby improving the sensitivity of the gas detection equipment to the connecting rod cover 200.

[0050] Please refer to Figures 3-4 A fixture 100 for grinding the connecting rod body and connecting rod cap mating teeth further includes a fourth limiting block 7 and a limiting post 8. The third limiting block 4, the fourth limiting block 7 and the limiting post 8 are installed on the side of the upright plate 102 opposite to the connecting rod cap 200 by means of screw connection. The fourth limiting block 7 is provided with a fourth positioning surface 701, which is perpendicular to the second direction and abuts against the connecting rod body 300. The third positioning surface 401 is perpendicular to the first direction. The limiting post 8 extends along the first direction and is fixedly sleeved in the mounting hole 350 of the connecting rod body 300.

[0051] The clamping assembly 2 also includes a fifth connecting rod 211, a fifth support rod 212, a fifth pressure block 213, a sixth connecting rod 214, a sixth support rod 215, a sixth pressure block 216, a seventh connecting rod 217, a seventh support rod 218, and a seventh pressure block 219. The hydraulic cylinder assembly 5 also includes a fifth hydraulic cylinder 505, a sixth hydraulic cylinder 506, and a seventh hydraulic cylinder 507.

[0052] The fifth hydraulic cylinder 505 is mounted on the vertical plate 102 by means of screw connection. The output shaft of the fifth hydraulic cylinder 505 extends along the first direction. One end of the fifth connecting rod 211 is rotatably connected to the output shaft of the fifth hydraulic cylinder 505 by means of hinge connection, and the other end is connected to the fifth pressure block 213 by means of screw connection. The two ends of the fifth support rod 212 are rotatably connected to the cylinder body of the fifth hydraulic cylinder 505 and the fifth connecting rod 211 by means of hinge connection respectively. The fifth pressure block 213 is arranged opposite to the third positioning surface 401 and abuts against the connecting rod body 300.

[0053] The sixth hydraulic cylinder 506 is mounted on the vertical plate 102 by means of screw connection. The output shaft of the sixth hydraulic cylinder 506 extends along the first direction. One end of the sixth connecting rod 214 is rotatably connected to the output shaft of the sixth hydraulic cylinder 506 by means of hinge connection, and the other end is connected to the sixth pressure block 216 by means of screw connection. The two ends of the sixth support rod 215 are rotatably connected to the cylinder body of the sixth hydraulic cylinder 506 and the sixth connecting rod 214 by means of hinge connection respectively. The sixth pressure block 216 is arranged opposite to the third positioning surface 401 and abuts against the connecting rod body 300.

[0054] The seventh cylinder 507 is mounted on the vertical plate 102 by screw connection. The output shaft of the seventh cylinder 507 extends in the third direction. One end of the seventh connecting rod 217 is rotatably connected to the output shaft of the seventh cylinder 507 by hinge connection, and the other end is connected to the seventh pressure block 219 by screw connection. The two ends of the seventh support rod 218 are rotatably connected to the cylinder body of the seventh cylinder 507 and the seventh connecting rod 217 by hinge connection respectively. The seventh pressure block 219 and the base 101 are arranged opposite each other in the third direction and abut against the connecting rod body 300.

[0055] Please refer to Figures 2-5 The first airway 600 passes through the vertical plate 102 and connects to the second airway 700. The end of the first airway 600 away from the second airway 700 passes through the vertical plate 102 and connects to the air detection equipment.

[0056] The cross-sectional area of ​​the second air passage 700 is smaller than that of the first air passage 600. When the gas detection equipment delivers gas to the first air passage 600 and the second air passage 700, the second air passage 700 can obtain higher pressure, thereby improving the sensitivity of the gas detection equipment to the gas detection of the connecting rod body 300.

[0057] Please refer to Figures 2-4 and Figure 8 The oil circuit assembly 800 also includes a first body oil inlet 850 penetrating the base 101, a second body oil inlet 851 penetrating the vertical plate 102, and a body return oil circuit 852 penetrating the vertical plate 102. The first body oil inlet 850 is connected to the second body oil inlet 851, the second body oil inlet 851 is connected to the seventh oil cylinder 507, and the body return oil circuit 852 is connected to the seventh oil cylinder 507. The oil circuit assembly 800 also includes a third body oil inlet circuit 860 that penetrates the vertical plate 102. The third body oil inlet circuit 860 is connected to the fifth oil cylinder 505 and the sixth oil cylinder 506, and the body return oil circuit 852 is connected to the fifth oil cylinder 505 and the sixth oil cylinder 506.

[0058] The first body oil inlet passage 850, at its end away from the second body oil inlet passage 851, passes through the base 101 and is connected to the hydraulic equipment. The third body oil inlet passage 860, at its end away from the fifth cylinder 505 and the sixth cylinder 506, passes through the vertical plate 102 and is connected to the hydraulic equipment. The body return oil passage 852, at its end away from the fifth cylinder 505, the sixth cylinder 506, and the seventh cylinder 507, passes through the vertical plate 102 and is connected to the hydraulic equipment.

[0059] Please refer to Figures 4-8 A jig 100 for grinding connecting rod body and connecting rod cap mating teeth further includes a first air nozzle 9, a second air nozzle 10, a first oil nozzle 11, a second oil nozzle 12, a third oil nozzle 13, a fourth oil nozzle 14, a fifth oil nozzle 15, a sixth oil nozzle 16, and a seventh oil nozzle 17.

[0060] The first air nozzle 9 is installed on the base 101 and connected to the base section 410. The second air nozzle 10 is installed on the upright plate 102 and connected to the first body air passage 600.

[0061] The first oil nozzle 11 is installed on the base 101 and connected to the first cover oil inlet passage 820. The second oil nozzle 12 is installed on the base 101 and connected to the first cover return oil passage 821. The third oil nozzle 13 is installed on the mounting plate 105 and connected to the fifth cover oil inlet passage 830. The fourth oil nozzle 14 is installed on the mounting plate 105 and connected to the eighth cover oil inlet passage 840.

[0062] The fifth oil nozzle 15 is installed on the base 101 and connected to the first body oil inlet passage 850. The sixth oil nozzle 16 is installed on the vertical plate 102 and connected to the body return oil passage 852. The seventh oil nozzle 17 is installed on the vertical plate 102 and connected to the third body oil inlet passage 860.

[0063] The first air nozzle 9 and the second air nozzle 10 are connected to the air testing equipment, and the first oil nozzle 11, the second oil nozzle 12, the third oil nozzle 13, the fourth oil nozzle 14, the fifth oil nozzle 15, the sixth oil nozzle 16, and the seventh oil nozzle 17 are connected to the hydraulic equipment.

[0064] Please refer to Figure 5 In one embodiment of the present invention, the second cover air passage 500 has three through-holes on the first positioning surface 301. The three through-holes of the second cover air passage 500 on the first positioning surface 301 are distributed on the first positioning surface 301 according to the shape and size of the connecting rod cover 200, thereby improving the detection sensitivity of the air detection equipment to the connecting rod cover 200.

[0065] Please refer to Figure 5 Similarly, the second air passage 700 has three through-holes on the third positioning surface 401. The three through-holes of the second air passage 700 on the third positioning surface 401 are distributed on the third positioning surface 401 according to the shape and size of the connecting rod body 300, thereby improving the detection sensitivity of the air detection equipment to the connecting rod body 300.

[0066] In the specific application of this application: The first hydraulic cylinder 501 drives the first connecting rod 201, the first support rod 202, and the first pressure block 203 to clamp the connecting rod cover 200 in a first direction in conjunction with the first positioning surface 301. The hydraulic equipment supplies driving oil to the fifth cover oil inlet 830. The driving oil enters the first hydraulic cylinder 501 through the sixth cover oil inlet 832. The output shaft of the first hydraulic cylinder 501 extends and, in conjunction with the first support rod 202, drives the first connecting rod 201 to rotate. The first connecting rod 201 drives the first pressure block 203 to clamp the connecting rod cover 200. The driving oil flows back to the hydraulic equipment through the sixth cover return oil line 833, the third cover return oil line 825, the second cover return oil line 823, and the first cover return oil line 821. When the driving oil is input in the reverse direction and flows back in the reverse direction, that is, when the hydraulic equipment cooperates with the reversing valve to input driving oil from the first cover return oil circuit 821 and flow back to the hydraulic equipment from the fifth cover inlet oil circuit 830, the output shaft of the first cylinder 501 retracts and the first pressure block 203 releases the connecting rod cover 200.

[0067] The second hydraulic cylinder 502 drives the second connecting rod 204, the second support rod 205, and the second pressure block 206 to clamp the connecting rod cover 200 in the first direction in conjunction with the first positioning surface 301. The hydraulic equipment supplies driving oil to the fifth cover inlet oil passage 830. The driving oil enters the second hydraulic cylinder 502 through the seventh cover inlet oil passage 834. The output shaft of the second hydraulic cylinder 502 extends, cooperating with the second support rod 205 to drive the second connecting rod 204 to rotate. The second connecting rod 204 then drives the second pressure block 206 to clamp the connecting rod cover 200. The driving oil flows back to the hydraulic equipment through the seventh cover return oil passage 835, the third cover return oil passage 825, the second cover return oil passage 823, and the first cover return oil passage 821. When the driving oil is input in the reverse direction and flows back in the reverse direction, that is, when the hydraulic equipment cooperates with the reversing valve to input driving oil from the first cover return oil circuit 821 and flow back to the hydraulic equipment from the fifth cover inlet oil circuit 830, the output shaft of the second cylinder 502 retracts and the second pressure block 206 releases the connecting rod cover 200.

[0068] The third cylinder 503 drives the third pressure block 207 to clamp the connecting rod cover 200 in the second direction in conjunction with the second positioning surface 601. The hydraulic equipment supplies driving oil to the first cover inlet oil passage 820. The driving oil enters the third cylinder 503 via the second cover inlet oil passage 822, the third cover inlet oil passage 824, and the fourth cover inlet oil passage 826. The third oil output shaft extends, driving the third pressure block 207 to clamp the connecting rod cover 200. The driving oil flows back to the hydraulic equipment via the fourth cover return oil passage 827, the third cover return oil passage 825, the second cover return oil passage 823, and the first cover return oil passage 821. When the driving oil is input in the reverse direction and flows back in the reverse direction, i.e., the hydraulic equipment, in conjunction with the reversing valve, inputs driving oil from the first cover return oil passage 821 and flows back to the hydraulic equipment from the first cover inlet oil passage 820. The output shaft of the third cylinder 503 retracts, and the third pressure block 207 releases the connecting rod cover 200.

[0069] The fourth hydraulic cylinder 504 drives the fourth connecting rod 208, the fourth support rod 209, and the fourth pressure block 210 to clamp the connecting rod cover 200 in a third-direction upward position in conjunction with the third mounting base 108. The hydraulic equipment supplies driving oil to the eighth cover inlet oil passage 840. The driving oil enters the fourth hydraulic cylinder 504 through the ninth cover inlet oil passage 841. The output shaft of the fourth hydraulic cylinder 504 extends, cooperating with the fourth support rod 209 to drive the fourth connecting rod 208 to rotate. The fourth connecting rod 208 then drives the fourth pressure block 210 to clamp the connecting rod cover 200. The driving oil flows back to the hydraulic equipment through the ninth cover return oil passage 842, the third cover return oil passage 825, the second cover return oil passage 823, and the first cover return oil passage 821. When the driving oil is input in the reverse direction and flows back in the reverse direction, that is, when the hydraulic equipment cooperates with the reversing valve to input driving oil from the first cover return oil circuit 821 and flow back to the hydraulic equipment from the eighth cover inlet oil circuit 840, the output shaft of the fourth cylinder 504 retracts and the fourth pressure block 210 releases the connecting rod cover 200.

[0070] The fifth cylinder 505 drives the fifth connecting rod 211, the fifth support rod 212, and the fifth pressure block 213 to clamp the connecting rod body 300 in the first direction in conjunction with the third positioning surface 401. The hydraulic equipment supplies driving oil to the third body inlet oil passage 860. The driving oil enters the fifth cylinder 505 through the third body inlet oil passage 860, causing the output shaft of the fifth cylinder 505 to extend. This, in conjunction with the fifth support rod 212, drives the fifth connecting rod 211 to rotate, and the fifth connecting rod 211 drives the fifth pressure block 213 to clamp the connecting rod body 300. The driving oil flows back to the hydraulic equipment through the body return oil passage 852. When the driving oil is input in the opposite direction and flows back in the opposite direction, i.e., the hydraulic equipment, in conjunction with the reversing valve, inputs driving oil from the body return oil passage 852 and flows back to the hydraulic equipment from the third body inlet oil passage 860. The output shaft of the fifth cylinder 505 retracts, and the fifth pressure block 213 releases the connecting rod body 300.

[0071] The sixth cylinder 506 drives the sixth connecting rod 214, the sixth support rod 215, and the sixth pressure block 216 to clamp the connecting rod body 300 in the first direction in conjunction with the third positioning surface 401. The hydraulic equipment supplies driving oil to the third body inlet oil passage 860. The driving oil enters the sixth cylinder 506 through the third body inlet oil passage 860, causing the output shaft of the sixth cylinder 506 to extend. This, in conjunction with the sixth support rod 215, drives the sixth connecting rod 214 to rotate, causing the sixth connecting rod 214 to drive the sixth pressure block 216 to clamp the connecting rod body 300. The driving oil flows back to the hydraulic equipment through the body return oil passage 852. When the driving oil is input in the opposite direction and flows back in the opposite direction, i.e., the hydraulic equipment, in conjunction with the reversing valve, inputs driving oil from the body return oil passage 852 and flows back to the hydraulic equipment from the third body inlet oil passage 860. The output shaft of the sixth cylinder 506 retracts, and the sixth pressure block 216 releases the connecting rod body 300.

[0072] The seventh cylinder 507 drives the seventh connecting rod 217, the seventh support rod 218, and the seventh pressure block 219 to cooperate with the fourth positioning surface 701 and the limiting post 8 to restrict the connecting rod body 300 from rotating around the limiting post 8. The hydraulic equipment supplies driving oil to the first body oil inlet 850. The driving oil enters the seventh cylinder 507 through the second body oil inlet 851. The output shaft of the seventh cylinder 507 extends, cooperating with the seventh support rod 218 to drive the seventh connecting rod 217 to rotate. The seventh connecting rod 217 drives the seventh pressure block 219 to clamp the connecting rod body 300. The driving oil flows back to the hydraulic equipment through the body return oil passage 852. When the driving oil is input in the opposite direction and flows back in the opposite direction, that is, when the hydraulic equipment cooperates with the reversing valve to input driving oil from the body return oil passage 852 and flow back to the hydraulic equipment from the first body oil inlet 850, the output shaft of the seventh cylinder 507 retracts, and the seventh pressure block 219 releases the connecting rod body 300.

[0073] The gas testing equipment inputs gas into the first cover gas passage 400. The gas is transported from the base section 410, the first support plate section 420, the mounting plate section 430, and the fourth mounting seat section 440 of the first cover gas passage 400 to the second cover gas passage 500. The connecting rod cover 200 seals the through-hole of the second cover gas passage 500 on the first positioning surface 301. By observing the pressure curve changes of the gas testing equipment, it is determined whether there is any deviation in the clamping position of the connecting rod cover 200 in the fixture 100 used for grinding the connecting rod body and the connecting rod cover mating teeth, such as whether the connecting rod cover is tightly attached to the first positioning surface, to ensure the clamping accuracy of the fixture 100 used for grinding the connecting rod body and the connecting rod cover mating teeth.

[0074] The gas testing equipment inputs gas into the first gas passage 600, which then transports the gas to the second gas passage 700. The connecting rod body 300 seals the penetration opening of the second gas passage 700 at the third positioning surface 401. By observing the pressure curve changes of the gas testing equipment, it is determined whether there is any deviation in the clamping position of the connecting rod body 300 in the fixture 100 used for grinding the connecting rod body and connecting rod cap mating teeth, such as whether the connecting rod body is tightly against the third positioning surface, thus ensuring the clamping accuracy of the fixture 100 used for grinding the connecting rod body and connecting rod cap mating teeth.

[0075] The cutting tool of the grinding machine feeds in a third direction and travels along a first direction to grind the connecting teeth 900 of the connecting rod cap 200 and the connecting rod body 300.

[0076] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A jig for grinding the connecting rod body and connecting rod cap mating teeth, characterized in that, include: The frame, clamping assembly, and first limit block, third limit block, and hydraulic cylinder assembly mounted on the frame; The first limiting block and the third limiting block are respectively provided with a first positioning surface and a third positioning surface. The clamping assembly is installed on the cylinder group and abuts against the connecting rod cover and the connecting rod body. The frame has a first cover air passage that penetrates the frame, the first limiting block has a second cover air passage that penetrates the first positioning surface, the first cover air passage is connected to the second cover air passage, and the connecting rod cover abuts against the first positioning surface and the through opening of the second cover air passage on the first positioning surface. The frame has a first air passage that penetrates the frame, and the third limiting block has a second air passage that penetrates the third positioning surface. The first air passage is connected to the second air passage, and the connecting rod abuts against the third positioning surface and the through-hole of the second air passage on the third positioning surface. The frame is provided with an oil passage group that runs through the frame, and the oil passage group is connected to the oil cylinder group; The clamping assembly, in conjunction with the first positioning surface and the frame, fixes the connecting rod cover and, in conjunction with the third positioning surface, fixes the connecting rod body.

2. The fixture for grinding the connecting rod body and connecting rod cap mating teeth as described in claim 1, characterized in that, The frame includes a base, an upright plate, a first support plate, a second support plate, a mounting plate, a first mounting seat, a second mounting seat, a third mounting seat, and a fourth mounting seat; The upright plate is mounted on the base, the first support plate and the second support plate are mounted on the base and fixedly connected to one side of the upright plate, and the mounting plate is mounted on the first support plate and the second support plate and fixedly connected to one side of the upright plate. The first mounting base and the second mounting base are mounted on the mounting plate and are arranged opposite to each other in a second direction; the third mounting base is mounted on the mounting plate and supports the connecting rod cover in a third direction; the fourth mounting base is mounted on the mounting plate and is fixedly connected to one side of the upright plate. The hydraulic cylinder assembly includes a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, and a fourth hydraulic cylinder. The first hydraulic cylinder is mounted on a first mounting base, the second hydraulic cylinder is mounted on a second mounting base, the third hydraulic cylinder is mounted on the first mounting base, and the fourth hydraulic cylinder is mounted on a fourth mounting base. The first direction is parallel to the X-axis, the second direction is parallel to the Y-axis, and the third direction is parallel to the Z-axis.

3. A fixture for grinding the connecting rod body and connecting rod cap mating teeth as described in claim 2, characterized in that, The first cover air passage includes a base segment penetrating the base, a first support plate segment penetrating the first support plate, a mounting plate segment penetrating the mounting plate, and a fourth mounting seat segment penetrating the fourth mounting seat. The base segment is connected to the first support plate segment, the first support plate segment is connected to the mounting plate segment, the mounting plate segment is connected to the fourth mounting seat segment, and the fourth mounting seat segment is connected to the second cover air passage.

4. A fixture for grinding the connecting rod body and connecting rod cap mating teeth as described in claim 3, characterized in that, The oil circuit assembly includes a first cover oil inlet circuit and a first cover oil return circuit that pass through the base, a second cover oil inlet circuit and a second cover oil return circuit that pass through the second support plate, a third cover oil inlet circuit and a third cover oil return circuit that pass through the mounting plate, and a fourth cover oil inlet circuit and a fourth cover oil return circuit that pass through the first mounting base. The first cover oil inlet is connected to the second cover oil inlet, the second cover oil inlet is connected to the third cover oil inlet, the third cover oil inlet is connected to the fourth cover oil inlet, and the fourth cover oil inlet is connected to the third oil cylinder; The first cover oil return circuit is connected to the second cover oil return circuit, the second cover oil return circuit is connected to the third cover oil return circuit, the third cover oil return circuit is connected to the fourth cover oil return circuit, and the fourth cover oil return circuit is connected to the third oil cylinder. The oil circuit assembly also includes a fifth cover oil inlet circuit that penetrates the mounting plate, a sixth cover oil inlet circuit and a sixth cover oil return circuit that penetrate the first mounting base, and a seventh cover oil inlet circuit and a seventh cover oil return circuit that penetrate the second mounting base. The fifth cover oil inlet circuit is connected to the sixth cover oil inlet circuit, the sixth cover oil inlet circuit is connected to the first oil cylinder, the third cover return oil circuit is connected to the sixth cover return oil circuit, and the sixth cover return oil circuit is connected to the first oil cylinder. The fifth cover oil inlet circuit is connected to the seventh cover oil inlet circuit, the seventh cover oil inlet circuit is connected to the second oil cylinder, the third cover return oil circuit is connected to the seventh cover return oil circuit, and the seventh cover return oil circuit is connected to the second oil cylinder; The oil circuit assembly also includes an eighth cover oil inlet circuit that penetrates the mounting plate, a ninth cover oil inlet circuit that penetrates the fourth mounting base, and a ninth cover return circuit. The eighth cover oil inlet circuit is connected to the ninth cover oil inlet circuit, the ninth cover oil inlet circuit is connected to the fourth oil cylinder, the third cover return circuit is connected to the ninth cover return circuit, and the ninth cover return circuit is connected to the fourth oil cylinder.

5. A fixture for grinding connecting rod body and connecting rod cap mating teeth as described in claim 4, characterized in that, The cross-sectional area of ​​the second cover air passage is smaller than the cross-sectional area of ​​the fourth mounting segment, and the cross-sectional area of ​​the fourth mounting segment is smaller than the cross-sectional areas of the base segment, the first support plate segment, and the mounting plate segment.

6. A fixture for grinding the connecting rod body and connecting rod cap mating teeth as described in claim 5, characterized in that, The third limiting block is installed on the side of the upright plate opposite to the connecting rod cover; The cylinder assembly also includes a fifth cylinder, a sixth cylinder, and a seventh cylinder. The fifth cylinder is mounted on the vertical plate, the sixth cylinder is mounted on the vertical plate, and the seventh cylinder is mounted on the vertical plate.

7. A fixture for grinding connecting rod body and connecting rod cap mating teeth as described in claim 6, characterized in that, The first body airway penetrates the vertical plate and connects to the second body airway.

8. A fixture for grinding connecting rod body and connecting rod cap mating teeth as described in claim 7, characterized in that, The oil circuit assembly also includes a first body oil inlet circuit passing through the base, a second body oil inlet circuit passing through the vertical plate, and a body return oil circuit passing through the vertical plate. The first body oil inlet circuit is connected to the second body oil inlet circuit, the second body oil inlet circuit is connected to the seventh oil cylinder, and the body return oil circuit is connected to the seventh oil cylinder. The oil circuit assembly also includes a third body oil inlet circuit that runs through the vertical plate, the third body oil inlet circuit being connected to the fifth oil cylinder and the sixth oil cylinder, and the body return oil circuit being connected to the fifth oil cylinder and the sixth oil cylinder.

9. A fixture for grinding connecting rod body and connecting rod cap mating teeth as described in claim 8, characterized in that, The cross-sectional area of ​​the second body airway is smaller than that of the first body airway.

10. A fixture for grinding connecting rod body and connecting rod cap mating teeth as described in claim 9, characterized in that, A fixture for grinding connecting rod body and connecting rod cap mating teeth further includes a first air nozzle, a second air nozzle, a first oil nozzle, a second oil nozzle, a third oil nozzle, a fourth oil nozzle, a fifth oil nozzle, a sixth oil nozzle, and a seventh oil nozzle; The first air nozzle is mounted on the base and connected to the base section; the second air nozzle is mounted on the upright plate and connected to the first body air passage. The first oil nozzle is installed on the base and connected to the first cover oil inlet circuit; the second oil nozzle is installed on the base and connected to the first cover oil return circuit; the third oil nozzle is installed on the mounting plate and connected to the fifth cover oil inlet circuit; and the fourth oil nozzle is installed on the mounting plate and connected to the eighth cover oil inlet circuit. The fifth oil nozzle is installed on the base and connected to the first body oil inlet circuit; the sixth oil nozzle is installed on the upright plate and connected to the body return oil circuit; the seventh oil nozzle is installed on the upright plate and connected to the third body oil inlet circuit. The first air nozzle and the second air nozzle are connected to an air testing device, and the first oil nozzle, the second oil nozzle, the third oil nozzle, the fourth oil nozzle, the fifth oil nozzle, the sixth oil nozzle, and the seventh oil nozzle are connected to a hydraulic device.

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