High-precision automatic grinding production line for bearing bushes

Abstract

The invention discloses a high-precision automatic grinding production line for a bearing bush, and relates to the technical field of bearing product machining. A high-precision automatic grinding production line for bearing bushes comprises a table plate mechanism which comprises a table top. A fixing groove penetrates through the middle of the surface of the tabletop; a sliding groove formed in the table top in a penetrating mode is formed beside the fixing groove. A first grinding assembly used for grinding the inner circle of the bearing bush is fixedly arranged in the fixing groove. A second grinding assembly used for grinding the outer circle of the bearing bush is slidably arranged in the sliding groove. The side, away from the second grinding assembly, of the first grinding assembly is provided with an abutting mechanism used for abutting against the bearing bush, the abutting mechanism comprises a second air cylinder fixedly connected with the table top, the output end of the second air cylinder is fixedly connected with a cylinder plate, the upper end of the inner face of the cylinder plate is fixedly connected with a disc, and a column shaft fixedly penetrates through the middle of the surface of the disc. The high-precision automatic grinding production line for the bearing bush effectively eliminates clamping deformation, improves the grinding cylindricity and reduces the production rejection rate.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing product processing, and specifically to a high-precision automatic grinding production line for bearing shells. Background Art

[0002] The bearing shell is an important part of a sliding bearing and is usually used in fields such as automotive engines and industrial machinery. High-precision processing is required to ensure good wear resistance and fitting accuracy. Therefore, a high-precision automatic grinding production line is crucial for the production of bearing shells.

[0003] The bearing shell is the part that contacts the journal of the sliding bearing. Its shape is a semi-cylindrical surface in the shape of a tile and is very smooth. It is generally made of wear-resistant materials such as bronze and antifriction alloys. In special cases, it can be made of wood, engineering plastics or rubber.

[0004] There are two types of bearing shells: integral and split. The integral bearing shell is usually called a bushing. The integral bearing shell can be either without an oil groove or with an oil groove. The bearing shell and the journal adopt a clearance fit and generally do not rotate with the shaft.

[0005] The patent with the publication number CN117564828B discloses a surface grinding and polishing device for a copper bearing shell, which includes a base and a sliding plate slidably connected to one side surface of the base through a linear slide rail. A clamping part is movably connected inside the base, a driving part for driving the clamping part is arranged on one side of the base, and a grinding part is arranged on the side wall of the sliding plate; the clamping part includes a housing, a rotating block rotatably connected to the inner side wall of the housing, a plurality of clamping jaws radially slidably connected to the end face of the housing, and an end face limiting block slidably connected to the inner wall of the housing only axially. A contact head is slidably connected to the side wall of the clamping jaw, a ball is in rolling fit with the bottom of the contact head, and a first spring is buckled to the bottom of the contact head, and the other end of the first spring is buckled to the side wall of the clamping jaw. By setting the grinding part as a combination of a rotating cylinder and a grinding block, and then using the centrifugal force of the grinding block rotating around to control the grinding pressure, the grinding pressure can be controlled by controlling the rotation speed of the rotating cylinder, thereby improving the grinding quality.

[0006] In the above technical solution, the grinding block is connected by a spring. As the grinding time increases, the elastic force of the spring will gradually change, and the grinding pressure of the grinding block is controlled by centrifugal force, which actually makes it difficult to accurately adjust the grinding pressure; there are split bearing shells, and the above method cannot grind split bearing shells. Therefore, there are still problems in actual work, and a high-precision automatic grinding production line for bearing shells is urgently needed to solve the above existing problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a high-precision automatic grinding production line for bearing shells to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: a high-precision automatic grinding production line for bearing bushes, including a table mechanism, the table mechanism includes a tabletop, and table legs for support are respectively fixedly connected to the four corners of the lower surface of the tabletop; A fixing groove is penetrated and opened in the middle of the surface of the tabletop; A sliding groove penetrated through the tabletop is arranged beside the fixing groove; A first grinding component for grinding the inner circle of the bearing bush is fixedly arranged in the fixing groove; A second grinding component for grinding the outer circle of the bearing bush is slidably arranged in the sliding groove; An abutting mechanism for abutting against the bearing bush is arranged on one side of the first grinding component away from the second grinding component. The abutting mechanism includes a second cylinder fixedly connected to the tabletop, the output end of the second cylinder is fixedly connected with a cylinder plate, the upper end of the inner surface of the cylinder plate is fixedly connected with a disc, a column shaft is fixedly inserted through the middle of the surface of the disc, and an abutting roller adapted to the cylinder plate is movably sleeved at the lower end of the column shaft.

[0009] As a preferred technical solution of the present invention, slide rails fixedly embedded in the tabletop are respectively arranged on both sides of the sliding groove.

[0010] As a preferred technical solution of the present invention, the first grinding component includes a first motor mechanism, a first grinding shaft mechanism and a first pressing mechanism; The first motor mechanism includes a first motor fixedly connected to the lower surface of the tabletop, and a first machine shaft penetrating the fixing groove is fixedly connected to the output end of the first motor; The first machine shaft is fixedly sleeved with the first grinding shaft mechanism.

[0011] The first grinding shaft mechanism successively includes a first shaft shoulder component, a first elastic shaft sleeve component, a first grinding wheel component, a second elastic shaft sleeve component and a second shaft shoulder component from bottom to top; The first shaft shoulder component includes a first shaft shoulder fixedly sleeved on the first machine shaft, the first shaft shoulder is adaptively inserted into the fixing groove, and a first assembly groove adapted to the first elastic shaft sleeve component is opened on the lower inner wall of the first shaft shoulder; The first elastic shaft sleeve component includes a sleeve shell adaptively inserted into the first assembly groove, and bone pieces are fixedly connected to the middle of the inner side wall of the sleeve shell at equal intervals and uniformly; The first grinding wheel component includes a shaft cylinder fixedly sleeved on the first machine shaft, the end of the shaft cylinder is correspondingly inserted into the first elastic shaft sleeve component and the second elastic shaft sleeve component, a sleeve is fixedly sleeved on the outside of the shaft cylinder, a grinding wheel is fixedly sleeved on the outside of the sleeve, and third assembly grooves are opened on the upper and lower end surfaces of the sleeve, and the third assembly grooves are adapted to both the first elastic shaft sleeve component and the second elastic shaft sleeve component; The second elastic bushing assembly has the same structure as the first elastic bushing assembly; The second shoulder assembly includes a second shoulder fixedly sleeved on the first machine shaft. A second assembly groove adapted to the second elastic bushing assembly is formed on the lower surface of the second shoulder, and through holes are evenly and equidistantly formed on the surface of the second shoulder.

[0012] The first pressing mechanism includes a pressing ring adapted to sleeved on the grinding wheel. The pressing ring is located below the second shoulder. Slide shafts corresponding to the through holes are fixedly connected to the upper end surface of the pressing ring at equal intervals and uniformly. A stop block is fixedly connected to the upper end of each slide shaft; A slider fixedly inserted into the through hole is sleeved on each slide shaft.

[0013] The second grinding assembly has the same structure as the first grinding assembly. The second grinding assembly includes a second motor mechanism, a second grinding shaft mechanism and a second pressing mechanism; The second motor mechanism includes a second motor on the lower surface of the table. The output end of the second motor is fixedly connected to a second machine shaft inserted through the sliding groove; The second machine shaft is fixedly sleeved with the second grinding shaft mechanism; A first cylinder is fixedly connected to the side of the fixed end of the second motor. The first cylinder is fixedly connected to the lower surface of the table; The second grinding shaft mechanism has the same structure as the first grinding shaft mechanism. The second grinding shaft mechanism includes a second grinding wheel assembly.

[0014] As a preferred technical solution of the present invention, first auxiliary rollers are symmetrically arranged on both sides of the abutting roller. A first roller shaft is fixedly connected to the middle of the upper end of the first auxiliary roller; An adjusting arm assembly is arranged between the first roller shaft and the column shaft; The adjusting arm assembly includes a first sleeve movably sleeved on the column shaft. A torsion spring is fixedly connected between the first sleeve and the column shaft. An electric telescopic rod is fixedly connected to one side of the first sleeve. The end of the electric telescopic rod away from the first sleeve is fixedly connected to a second sleeve movably sleeved on the first roller shaft.

[0015] As a preferred technical solution of the present invention, auxiliary mechanisms are symmetrically arranged on both sides of the second grinding assembly. Each auxiliary mechanism includes a second auxiliary roller. A second roller shaft is vertically movably inserted through the middle of the second auxiliary roller. A rail block slidably inserted into the slide rail is fixedly connected to the lower end of the second roller shaft. A pressure sensor is fixedly inserted into the inner side of the second auxiliary roller.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1)The high-precision automatic grinding production line for bearing shells can completely fill the microscopic assembly gaps between the first shoulder assembly, the second shoulder assembly and the grinding wheel assembly through the axial compression deformation of the thin-walled cylindrical first elastic bushing assembly and the second elastic bushing assembly, and generate a stable pre-tightening force. This pre-tightening force not only cancels the axial force during the grinding process, but also reduces the axial runout distance of the grinding wheel assembly through the uniform deformation of the first elastic bushing assembly and the second elastic bushing assembly, improves the axial positioning accuracy, and effectively eliminates the assembly gap.

[0017] (2)The high-precision automatic grinding production line for bearing shells. The slight deformation of the elastic bushing assembly can achieve flexible fitting for the flatness error or parallelism deviation between the shoulder assembly and the grinding wheel assembly, improve the uniformity of the contact surface pressure distribution between the shoulder assembly and the grinding wheel assembly, reduce the local stress of their connection, equalize the geometric error of the connection, and extend the service life of the grinding wheel assembly.

[0018] (3)The high-precision automatic grinding production line for bearing shells. Bone pieces are fixedly connected equidistantly and evenly in the middle of the inner side of the housing. When the grinding wheel assembly and the shoulder assembly are assembled, the deformation of the housing makes the bone pieces approach each other, assisting in improving the stiffness of the elastic bushing assembly, preventing the elastic bushing from being overloaded or relaxed, and enhancing the reliability.

[0019] (4)The high-precision automatic grinding production line for bearing shells. The clamping force is precisely controlled by the second cylinder of the abutting mechanism and the first cylinder of the second motor mechanism, avoiding the skew of the bearing shell caused by traditional single-sided clamping, ensuring the perpendicularity of the grinding reference surface and the axis of the grinding wheel, enabling the integral bearing shell to be uniformly stressed in both directions, effectively eliminating the clamping deformation, improving the grinding cylindricity, and reducing the production rejection rate.

[0020] (5)The high-precision automatic grinding production line for bearing shells. The first motor of the first motor mechanism starts the first grinding wheel assembly of the first grinding component to perform inner ring grinding on the integral bearing shell, and at the same time, the second motor of the second motor mechanism starts the second grinding wheel assembly of the second grinding component to perform outer ring grinding on the integral bearing shell. The double-surface processing of the bearing shell is completed in a single clamping, improving the grinding efficiency of the bearing shell.

[0021] (6)The high-precision automatic grinding production line for bearing shells. By setting the first auxiliary rollers on both sides of the abutting roller to assist in performing arc-shaped limiting on the bearing shell, and by setting auxiliary mechanisms on both sides of the second grinding component respectively to assist in performing arc-shaped limiting on the bearing shell, the moving path of the bearing shell under the operation of the first grinding component and the second grinding component can be optimized. Thus, for split bearing shells, the two split bearing shells can be assembled and ground synchronously, thereby broadening the types of bearing shells that can be processed and improving the applicable range.

[0022] (7)Automated high-precision grinding production line for bearing shells. During the synchronous grinding of the split bearing shell assembly, the slider is activated to cause the pressure ring to slide down along it and fit against the upper end face of the bearing shell. When the gap between the two split bearing shells just reaches the grinding assembly, the pressing of the pressure ring can stabilize the assembly of the bearing shell and improve the grinding stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic top plan view of the structure of the present invention; Figure 3 is a schematic diagram of the table mechanism of the present invention; Figure 4 is a schematic diagram of the connection of the table mechanism of the present invention; Figure 5 is a schematic bottom view of the connection of the table mechanism of the present invention; Figure 6 is a schematic diagram of the first grinding assembly of the present invention; Figure 7 is a schematic diagram of the first motor mechanism of the present invention; Figure 8 is a schematic diagram of the first grinding shaft mechanism of the present invention; Figure 9 is a schematic diagram of the elastic bushing assembly of the present invention; Figure 10 is a schematic diagram of the grinding wheel assembly of the present invention; Figure 11 is a schematic diagram of the second shaft shoulder assembly of the present invention; Figure 12 is a schematic diagram of the first pressing mechanism of the present invention; Figure 13 is a schematic diagram of the abutting mechanism of the present invention; Figure 14 is a schematic diagram of the main body of the abutting mechanism of the present invention; is a schematic diagram of the first auxiliary roller of the present invention; Figure 15 is a schematic diagram of the auxiliary mechanism of the present invention; Figure 16 is a schematic diagram of the second grinding assembly of the present invention; Figure 17 is a schematic diagram of the second motor mechanism of the present invention.

[0024] In the figure: 1. Table board mechanism; 101. Table top; 102. Table legs; 103. Fixing groove; 104. Sliding groove; 105. Slide rail; 2. First motor mechanism; 201. First motor; 202. First shaft; 3. First grinding shaft mechanism; 301. First shaft shoulder; 302. First assembly groove; 303. Sleeve housing; 304. Bone piece; 305. Shaft cylinder; 306. Cylinder sleeve; 307. Grinding wheel; 308. Third assembly groove; 309. Second shaft shoulder; 310. Second assembly groove; 311. Tool hole; 4. First pressing mechanism; 401. Pressing ring; 402. Slide shaft; 403. Stopper; 404. Slider; 5. Second motor mechanism; 501. Second motor; 502. Second shaft; 503. First cylinder; 6. Second grinding shaft mechanism; 7. Second pressing mechanism; 8. Abutting mechanism; 801. Second cylinder; 802. Cylinder plate; 803. Disc; 804. Column shaft; 805. Abutting roller; 806. First auxiliary roller; 807. First roller shaft; 808. First sleeve; 809. Torsion spring; 810. Electric telescopic rod; 811. Second sleeve; 9. Auxiliary mechanism; 901. Second auxiliary roller; 902. Second roller shaft; 903. Rail block; 904. Pressure sensor. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment: Please refer to Figure 18 , Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 13 , a high-precision automatic grinding production line for bearing bushes, including a table board mechanism 1. The table board mechanism 1 includes a table top 101, and table legs 102 for support are respectively fixedly connected to the four corners of the lower surface of the table top 101; A fixing groove 103 is penetrated and opened in the middle of the surface of the table top 101; A sliding groove 104 penetrated through the table top 101 is arranged beside the fixing groove 103; A first grinding assembly for grinding the inner circle of the bearing bush is fixedly arranged in the fixing groove 103; A second grinding assembly for grinding the outer circle of the bearing bush is slidably arranged in the sliding groove 104; On one side of the first grinding assembly away from the second grinding assembly, there is an abutting mechanism 8 for abutting against the bearing bush. The abutting mechanism 8 includes a second cylinder 801 fixedly connected to the tabletop 101. The output end of the second cylinder 801 is fixedly connected with a cylinder plate 802. The upper end of the inner surface of the cylinder plate 802 is fixedly connected with a disc 803. A column shaft 804 is fixedly inserted through the middle of the surface of the disc 803. Abutting roller 805 adapted to the cylinder plate 802 is movably sleeved at the lower end of the column shaft 804.

[0027] Please refer to Figure 14 On both sides of the sliding groove 104, there are sliding rails 105 fixedly embedded in the tabletop 101 respectively.

[0028] Please refer to Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 17 The first grinding assembly includes a first motor mechanism 2, a first grinding shaft mechanism 3 and a first pressing mechanism 4; The first motor mechanism 2 includes a first motor 201 fixedly connected to the lower surface of the tabletop 101. The output end of the first motor 201 is fixedly connected with a first machine shaft 202 inserted through the fixed groove 103; The first machine shaft 202 is fixedly sleeved with the first grinding shaft mechanism 3.

[0029] The first grinding shaft mechanism 3 successively includes a first shaft shoulder assembly, a first elastic shaft sleeve assembly, a first grinding wheel assembly, a second elastic shaft sleeve assembly and a second shaft shoulder assembly from bottom to top; The first shaft shoulder assembly includes a first shaft shoulder 301 fixedly sleeved with the first machine shaft 202. The first shaft shoulder 301 is adapted to be inserted into the fixed groove 103. A first assembly groove 302 adapted to the first elastic shaft sleeve assembly is opened on the lower inner wall of the first shaft shoulder 301; The first elastic shaft sleeve assembly includes a sleeve shell 303 adapted to be inserted into the first assembly groove 302. Equally spaced and uniformly fixed bone pieces 304 are connected to the middle of the inner side wall of the sleeve shell 303; The first grinding wheel assembly includes a shaft cylinder 305 fixedly sleeved with the first machine shaft 202. The ends of the shaft cylinder 305 are correspondingly inserted into the first elastic shaft sleeve assembly and the second elastic shaft sleeve assembly. A cylinder sleeve 306 is fixedly sleeved on the outside of the shaft cylinder 305. A grinding wheel 307 is fixedly sleeved on the outside of the cylinder sleeve 306. Third assembly grooves 308 are opened on the upper and lower end faces of the cylinder sleeve 306, and the third assembly grooves 308 are adapted to both the first elastic shaft sleeve assembly and the second elastic shaft sleeve assembly; The second elastic shaft sleeve assembly has the same structure as the first elastic shaft sleeve assembly; The second shaft shoulder assembly includes a second shaft shoulder 309 fixedly sleeved on the first machine shaft 202. A second assembly groove 310 adapted to the second elastic shaft sleeve assembly is provided on the lower surface of the second shaft shoulder 309, and a tool hole 311 is evenly and equidistantly penetrated through the surface of the second shaft shoulder 309.

[0030] The first pressing mechanism 4 includes a pressing ring 401 adapted to sleeved on the grinding wheel 307. The pressing ring 401 is located below the second shaft shoulder 309. Sliding shafts 402 corresponding to the tool holes 311 are fixedly connected to the upper end surface of the pressing ring 401 at equal distances and evenly. A stop block 403 is fixedly connected to the upper end of each sliding shaft 402, and the radius of the stop block 403 is greater than the radius of the tool hole 311; A slider 404 fixedly inserted into the tool hole 311 is sleeved on each sliding shaft 402.

[0031] The structure of the second grinding assembly is the same as that of the first grinding assembly. The second grinding assembly includes a second motor mechanism 5, a second grinding shaft mechanism 6 and a second pressing mechanism 7; The second motor mechanism 5 includes a second motor 501 located on the lower surface of the table 101. The output end of the second motor 501 is fixedly connected to a second machine shaft 502 inserted through the sliding groove 104; The second machine shaft 502 is fixedly sleeved on the second grinding shaft mechanism 6; A first cylinder 503 is fixedly connected to the side of the fixed end of the second motor 501, and the first cylinder 503 is fixedly connected to the lower surface of the table 101; The structure of the second grinding shaft mechanism 6 is the same as that of the first grinding shaft mechanism 3. The second grinding shaft mechanism 6 includes a second grinding wheel assembly.

[0032] Please refer to Figure 18 、 Figure 13 , first auxiliary rollers 806 are symmetrically arranged on both sides of the abutting roller 805, and a first roller shaft 807 is fixedly connected to the middle of the upper end of the first auxiliary roller 806; An adjusting arm assembly is provided between the first roller shaft 807 and the column shaft 804; The adjusting arm assembly includes a first sleeve 808 movably sleeved on the column shaft 804. A torsion spring 809 is fixedly connected between the first sleeve 808 and the column shaft 804. An electric telescopic rod 810 is fixedly connected to one side of the first sleeve 808, and a second sleeve 811 movably sleeved on the first roller shaft 807 is fixedly connected to the end of the electric telescopic rod 810 away from the first sleeve 808.

[0033] Please refer to Figure 15 Figure 16, auxiliary mechanisms 9 are symmetrically arranged on both sides of the second grinding assembly. Each auxiliary mechanism 9 includes a second auxiliary roller 901. A second roller shaft 902 is vertically movably inserted through the middle of the second auxiliary roller 901. A rail block 903 that slidably inserts into the slide rail 105 is fixedly connected to the lower end of the second roller shaft 902. A pressure sensor 904 is fixedly inserted inside the second auxiliary roller 901.

[0034] The working principle of the present invention is as follows: Through the axial compression deformation of the thin-walled cylindrical first elastic bushing assembly and the second elastic bushing assembly, the microscopic assembly gaps between the first shoulder assembly, the second shoulder assembly and the grinding wheel assembly can be completely filled, and a stable pre-tightening force is generated. This pre-tightening force not only cancels the axial force during the grinding process, but also reduces the axial runout distance of the grinding wheel assembly through the uniform deformation of the first elastic bushing assembly and the second elastic bushing assembly, improves the accuracy of axial positioning, and effectively eliminates the assembly gap.

[0035] The thin-walled structures of the first elastic bushing assembly and the second elastic bushing assembly are compressed when loading the grinding wheel assembly and exhibit linear elastic characteristics. When the grinding wheel assembly rotates at high speed and generates periodic axial vibration, the elastic bushing assembly absorbs energy through deformation, avoids crosstalk caused by gaps, reduces the axial vibration amplitude of the grinding wheel assembly, and significantly improves the grinding accuracy of the bearing surface.

[0036] The micro-deformation of the elastic bushing assembly can achieve flexible fitting for the flatness error or parallelism deviation between the shoulder assembly and the grinding wheel assembly, improve the uniformity of the contact surface pressure distribution between the shoulder assembly and the grinding wheel assembly, reduce the local stress of their connection, equalize the geometric error of the connection, and extend the service life of the grinding wheel assembly.

[0037] A third assembly groove 308 is provided on the sleeve 306 of the grinding wheel assembly, a first assembly groove 302 is provided on the first shoulder assembly, and a second assembly groove 310 is provided on the second shoulder assembly, all of which are adapted to the elastic bushing assembly, shortening the assembly time of the elastic bushing assembly, having high centering accuracy of the elastic bushing assembly, improving the replacement efficiency, and enhancing the convenience of assembling the elastic bushing assembly.

[0038] Bone pieces 304 are fixedly connected to the middle part of the inner side of the housing 303 at equal intervals and uniformly. When the grinding wheel assembly and the shoulder assembly are assembled, the deformation of the housing 303 makes the bone pieces 304 approach each other, assisting in enhancing the stiffness of the elastic bushing assembly, preventing the elastic bushing from being overloaded or relaxed, and improving the reliability.

[0039] The integral bearing shell is synchronously clamped by the first grinding wheel assembly and the abutting roller 805, while the second grinding wheel assembly abuts against the integral bearing shell from the other side, forming a rigid three-point positioning. The clamping force is precisely controlled by the second cylinder 801 of the abutting mechanism 8 and the first cylinder 503 of the second motor mechanism 5, avoiding the skew of the bearing shell caused by traditional single-sided clamping, ensuring that the perpendicularity between the grinding reference surface and the axis of the grinding wheel is level, enabling the integral bearing shell to be uniformly stressed in both directions, effectively eliminating the clamping deformation, improving the grinding cylindricity, and reducing the production rejection rate.

[0040] The first grinding wheel assembly of the first grinding component is started by the first motor 201 of the first motor mechanism 2 to perform inner ring grinding on the integral bearing shell. At the same time, the second grinding wheel assembly of the second grinding component is started by the second motor 501 of the second motor mechanism 5 to perform outer ring grinding on the integral bearing shell. The double-surface machining of the bearing shell is completed in a single clamping, improving the grinding efficiency of the bearing shell.

[0041] By arranging the first auxiliary rollers 806 on both sides of the abutting roller 805 to assist in the arc-shaped limiting of the bearing shell, and by arranging the auxiliary mechanisms 9 on both sides of the second grinding component respectively to assist in the arc-shaped limiting of the bearing shell, the moving path of the bearing shell under the operation of the first grinding component and the second grinding component can be optimized. Thus, for split bearing shells, the two split bearing shells can be joined together and ground synchronously, thereby broadening the types of bearing shells that can be processed and improving the scope of application.

[0042] During the synchronous grinding of the joined split bearing shells, the slider 404 is started to make the pressure ring 401 slide down along it and fit against the upper end surface of the bearing shell. When the gap between the two joined split bearing shells is just at the grinding component, the pressing of the pressure ring 401 can stabilize the joining of the bearing shells and improve the grinding stability.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision automatic grinding production line for bearing bushes, including a table mechanism (1), the table mechanism (1) includes a tabletop (101), and table legs (102) for support are fixedly connected to the four corners of the lower surface of the tabletop (101); It is characterized in that: A fixing groove (103) is vertically opened in the middle of the surface of the tabletop (101); A sliding groove (104) penetrating through the tabletop (101) is arranged beside the fixing groove (103); A first grinding component for grinding the inner circle of the bearing bush is fixedly arranged in the fixing groove (103); A second grinding component for grinding the outer circle of the bearing bush is slidably arranged in the sliding groove (104); On one side of the first grinding component away from the second grinding component, there is an abutting mechanism (8) for abutting the bearing bush. The abutting mechanism (8) includes a second cylinder (801) fixedly connected to the tabletop (101), the output end of the second cylinder (801) is fixedly connected to a cylinder plate (802), the upper end of the inner surface of the cylinder plate (802) is fixedly connected to a disc (803), a column shaft (804) is fixedly inserted through the middle of the surface of the disc (803), and an abutting roller (805) adapted to the cylinder plate (802) is movably sleeved at the lower end of the column shaft (804).

2. The high-precision automatic grinding production line for bearing shells according to claim 1, characterized in that: Sliding rails (105) fixedly embedded in the tabletop (101) are respectively arranged on both sides of the sliding groove (104); 3. The high-precision automatic grinding production line for bearing shells according to claim 1, characterized in that: The first grinding component includes a first motor mechanism (2), a first grinding shaft mechanism (3) and a first pressing mechanism (4); The first motor mechanism (2) includes a first motor (201) fixedly connected to the lower surface of the tabletop (101), and a first machine shaft (202) inserted through the fixing groove (103) is fixedly connected to the output end of the first motor (201); The first machine shaft (202) is fixedly sleeved with the first grinding shaft mechanism (3); 4. The high-precision automatic grinding production line for bearing shells according to claim 3, characterized in that: The first grinding shaft mechanism (3) successively includes a first shaft shoulder component, a first elastic shaft sleeve component, a first grinding wheel component, a second elastic shaft sleeve component and a second shaft shoulder component from bottom to top; The first shaft shoulder component includes a first shaft shoulder (301) fixedly sleeved with the first machine shaft (202), the first shaft shoulder (301) is adapted to be inserted into the fixing groove (103), and a first assembly groove (302) adapted to the first elastic shaft sleeve component is opened on the lower inner wall of the first shaft shoulder (301); The first elastic shaft sleeve component includes a sleeve (303) adapted to be inserted into the first assembly groove (302), and bone pieces (304) are fixedly connected to the middle of the inner side wall of the sleeve (303) at equal intervals; The first grinding wheel component includes a shaft cylinder (305) fixedly sleeved with the first machine shaft (202), the ends of the shaft cylinder (305) are correspondingly inserted into the first elastic shaft sleeve component and the second elastic shaft sleeve component, a sleeve (306) is fixedly sleeved on the outside of the shaft cylinder (305), a grinding wheel (307) is fixedly sleeved on the outside of the sleeve (306), third assembly grooves (308) are opened on the upper and lower end faces of the sleeve (306), and the third assembly grooves (308) are adapted to both the first elastic shaft sleeve component and the second elastic shaft sleeve component; The second elastic bushing assembly has the same structure as the first elastic bushing assembly; The second shoulder assembly includes a second shoulder (309) fixedly sleeved on the first machine shaft (202). A second assembly groove (310) adapted to the second elastic bushing assembly is formed on the lower surface of the second shoulder (309), and a plurality of apertures (311) are evenly and equidistantly formed through the surface of the second shoulder (309).

5. The high-precision automatic grinding production line for bearing shells according to claim 4, characterized in that: The first pressing mechanism (4) includes a pressing ring (401) adapted to sleeved on the grinding wheel (307). The pressing ring (401) is located below the second shoulder (309). A plurality of sliding shafts (402) corresponding to the apertures (311) are fixedly connected to the upper end surface of the pressing ring (401) at equal intervals. A stopper (403) is fixedly connected to the upper end of each sliding shaft (402); A slider (404) fixedly inserted into the aperture (311) is sleeved on each sliding shaft (402).

6. The high-precision automatic grinding production line for bearing shells according to claim 5, characterized in that: The second grinding assembly has the same structure as the first grinding assembly. The second grinding assembly includes a second motor mechanism (5), a second grinding shaft mechanism (6), and a second pressing mechanism (7); The second motor mechanism (5) includes a second motor (501) located on the lower surface of the tabletop (101). The output end of the second motor (501) is fixedly connected to a second machine shaft (502) inserted through the sliding groove (104); The second machine shaft (502) is fixedly sleeved on the second grinding shaft mechanism (6); A first cylinder (503) is fixedly connected to the side of the fixed end of the second motor (501). The first cylinder (503) is fixedly connected to the lower surface of the tabletop (101); The second grinding shaft mechanism (6) has the same structure as the first grinding shaft mechanism (3). The second grinding shaft mechanism (6) includes a second grinding wheel assembly.

7. The high-precision automatic grinding production line for bearing shells according to claim 1, wherein: First auxiliary rollers (806) are symmetrically arranged on both sides of the abutting roller (805). A first roller shaft (807) is fixedly connected to the middle of the upper end of the first auxiliary roller (806); An adjusting arm assembly is arranged between the first roller shaft (807) and the column shaft (804); The adjusting arm assembly includes a first sleeve (808) movably sleeved on the column shaft (804). A torsion spring (809) is fixedly connected between the first sleeve (808) and the column shaft (804). An electric telescopic rod (810) is fixedly connected to one side of the first sleeve (808). The end of the electric telescopic rod (810) away from the first sleeve (808) is fixedly connected to a second sleeve (811) movably sleeved on the first roller shaft (807).

8. The high-precision automatic grinding production line for bearing shells according to claim 2, wherein: Auxiliary mechanisms (9) are symmetrically arranged on both sides of the second grinding assembly. Each auxiliary mechanism (9) includes a second auxiliary roller (901). A second roller shaft (902) is vertically movably inserted through the middle of the second auxiliary roller (901). A rail block (903) slidably inserted into the slide rail (105) is fixedly connected to the lower end of the second roller shaft (902). A pressure sensor (904) is fixedly inserted into the inner side of the second auxiliary roller (901).

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