High-precision automated grinding production line for bearing bushings

Abstract

The application discloses a high-precision automatic bearing bush grinding production line and relates to the technical field of bearing product machining. The high-precision automatic bearing bush grinding production line comprises a table plate mechanism, and the table plate mechanism comprises a table top. A fixed groove is formed through the middle of the surface of the table top. A sliding groove is formed through the table top beside the fixed groove. A first grinding assembly for grinding the inner circle of the bearing bush is fixedly arranged in the fixed groove. A second grinding assembly for grinding the outer circle of the bearing bush is slidably arranged in the sliding groove. An abutting mechanism for abutting the bearing bush is arranged on the side of the first grinding assembly away from the second grinding assembly, and 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 inner face of the cylinder plate is fixedly connected with a disc at the upper end. A plurality of column shafts are fixedly inserted into the middle of the surface of the disc. The high-precision automatic bearing bush grinding production line effectively eliminates clamping deformation, improves grinding cylindricity and reduces the production scrap rate.

Description

Technical Field

[0001] This invention relates to the field of bearing product processing technology, specifically to a high-precision automated grinding production line for bearing bushes. Background Technology

[0002] Bearing shells are a crucial component of sliding bearings, commonly used in automotive engines, industrial machinery, and other fields. They require high-precision machining to ensure good wear resistance and fit accuracy. Therefore, high-precision automated grinding production lines are essential for bearing shell production.

[0003] The bearing bush is the part that contacts the journal of a sliding bearing. It is a semi-cylindrical surface shaped like a tile, and is very smooth. It is generally made of wear-resistant materials such as bronze and anti-friction 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. Integral bearing shells are usually called bushings. Integral bearing shells are available with or without oil grooves. The bearing shell and the journal are fitted with a clearance fit, and the bearing shell generally does not rotate with the shaft.

[0005] Patent CN117564828B discloses a grinding and polishing device for copper bearing surfaces. The device includes a base and a sliding plate slidably connected to one side of the base via a linear slide rail. A clamping part is movably connected to the inner side of the base, and a driving part for driving the clamping part is provided on one side of the base. A grinding part is provided 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, multiple jaws radially slidably connected to the end face of the housing, and an end face limiting block slidably connected only axially to the inner wall of the housing. An abutment head is slidably connected to the side wall of each jaw. A ball bearing is rolled around the bottom of the abutment head, and a spring is fastened to the bottom of the abutment head. The other end of the spring is fastened to the side wall of the jaw. By configuring the grinding part as a combination of a rotating drum and a grinding block, and utilizing the centrifugal force of the rotating grinding block to control the grinding pressure, the grinding pressure can be controlled by controlling the rotation speed of the rotating drum, thereby improving the grinding quality.

[0006] In the above technical solution, the grinding blocks are connected by springs. As the grinding time increases, the spring force will gradually change. Furthermore, the grinding pressure of the grinding blocks is controlled by centrifugal force, which makes it difficult to adjust the grinding pressure precisely. Split bearings exist, and the above method cannot be used to grind split bearings. Therefore, there are still problems in actual work. There is an urgent need for a high-precision automated grinding production line for bearings to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a high-precision automated grinding production line for bearing bushes to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a high-precision automated grinding production line for bearing bushes, including a table mechanism, wherein the table mechanism includes a tabletop, and table legs for support are fixedly connected to the four corners of the lower surface of the tabletop;

[0009] A fixed groove is provided through the center of the surface of the desktop;

[0010] A sliding groove that runs through the tabletop is provided next to the solid groove;

[0011] A first grinding component for grinding the inner circle of the bearing bush is fixedly installed in the groove.

[0012] A second grinding component for grinding the outer circle of the bearing bush is slidably disposed in the groove.

[0013] The first grinding assembly has an abutting mechanism for abutting the bearing bush on the side away from the second grinding assembly. The abutting mechanism includes a second cylinder fixedly connected to the table. The output end of the second cylinder is fixedly connected to a cylinder plate. A disc is fixedly connected to the upper end of the inner surface of the cylinder plate. A column shaft is fixedly inserted in the middle of the surface of the disc. An abutting roller adapted to the cylinder plate is movably sleeved at the lower end of the column shaft.

[0014] As a preferred embodiment of the present invention, slide rails fixedly embedded in the tabletop are respectively provided on both sides of the slide groove.

[0015] As a preferred embodiment of the present invention, the first grinding assembly includes a first motor mechanism, a first grinding shaft mechanism, and a first pressing mechanism;

[0016] The first motor mechanism includes a first motor fixedly connected to the lower surface of the desktop, and the output end of the first motor is fixedly connected to a first shaft that passes through a fixed groove;

[0017] The first machine shaft is fixedly sleeved onto the first grinding shaft mechanism.

[0018] The first grinding shaft mechanism includes, from bottom to top, a first shoulder assembly, a first elastic bushing assembly, a first grinding wheel assembly, a second elastic bushing assembly, and a second shoulder assembly;

[0019] The first shoulder assembly includes a first shoulder that is fixedly sleeved onto the first machine shaft, the first shoulder is adapted to insert a fastening groove, and a first assembly groove adapted to the first elastic bushing assembly is provided on the lower inner wall of the first shoulder.

[0020] The first elastic bushing assembly includes a sleeve that is adapted to be inserted into the first assembly groove, and bone pieces are fixedly connected at equal intervals and evenly in the middle of the inner sidewall of the sleeve.

[0021] The first grinding wheel assembly includes a cylinder that is fixedly sleeved onto a first machine shaft. The end of the cylinder is correspondingly inserted into a first elastic bushing assembly and a second elastic bushing assembly. A sleeve is fixedly sleeved onto the outer side of the cylinder, and a grinding wheel is fixedly sleeved onto the outer side of the sleeve. A third assembly groove is provided on both the upper and lower end faces of the sleeve. The third assembly groove is adapted to both the first elastic bushing assembly and the second elastic bushing assembly.

[0022] The second elastic bushing assembly and the first elastic bushing assembly have the same structure;

[0023] The second shoulder assembly includes a second shoulder that is fixedly sleeved onto the first machine shaft. A second mounting groove adapted to the second elastic bushing assembly is provided on the lower surface of the second shoulder. The surface of the second shoulder is provided with uniformly spaced tool holes.

[0024] The first pressing mechanism includes a pressing ring adapted to be fitted with a grinding wheel. The pressing ring is located below the second shoulder. The upper end face of the pressing ring is fixedly connected with sliding shafts corresponding to the tool holes at equal intervals. Each sliding shaft is fixedly connected with a stop block at its upper end.

[0025] Each of the aforementioned sliding shafts is fitted with a slider that is fixedly inserted into the hole.

[0026] 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.

[0027] The second motor mechanism includes a second motor located on the lower surface of the desktop, and the output end of the second motor is fixedly connected to a second shaft that passes through a sliding groove;

[0028] The second machine shaft is fixedly sleeved onto the second grinding shaft mechanism;

[0029] The first cylinder is fixedly connected to the side of the fixed end of the second motor, and the first cylinder is fixedly connected to the lower surface of the table.

[0030] The second grinding shaft mechanism has the same structure as the first grinding shaft mechanism, and the second grinding shaft mechanism includes a second grinding wheel assembly.

[0031] As a preferred embodiment of the present invention, first auxiliary rollers are symmetrically arranged on both sides of the abutting roller, and a first roller shaft is fixedly connected to the upper middle part of the first auxiliary roller.

[0032] An adjusting arm assembly is provided between the first roller shaft and the column shaft;

[0033] The adjusting arm assembly includes a first sleeve that is movably fitted onto a column shaft, a torsion spring that is fixedly connected between the first sleeve and the column shaft, an electric telescopic rod that is fixedly connected to one side of the first sleeve, and a second sleeve that is movably fitted onto a first roller shaft that is fixedly connected to the end of the electric telescopic rod away from the first sleeve.

[0034] As a preferred embodiment 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 and movably inserted in the middle of the second auxiliary roller. A rail block of a sliding 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.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] (1) The high-precision automated grinding production line for bearing bushes can completely fill the micro-assembly gap 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 preload. This preload not only offsets the axial force during grinding, 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, thereby improving the accuracy of axial positioning and effectively eliminating the assembly gap.

[0037] (2) In the high-precision automated grinding production line of bearing bush, the slight deformation of the elastic bushing assembly can achieve flexible fit for the flatness error or parallelism deviation of the shoulder assembly and the grinding wheel assembly, thereby improving the uniformity of the pressure distribution on the contact surface of the shoulder assembly and the grinding wheel assembly, reducing the local stress of the connection, homogenizing the geometric error of the connection, and extending the service life of the grinding wheel assembly.

[0038] (3) In the high-precision automated grinding production line of the bearing bush, the inner side of the sleeve is uniformly and evenly fixed with bone pieces. When the grinding wheel assembly and the shoulder assembly are assembled, the deformation of the sleeve makes the bone pieces approach each other, which helps to improve the rigidity of the elastic bushing assembly, prevents the elastic bushing from being overloaded or loosened, and improves reliability.

[0039] (4) The high-precision automated grinding production line for bearing bushes uses the clamping force to be precisely controlled by the second cylinder of the abutment mechanism and the first cylinder of the second motor mechanism. This avoids the bearing bush skew caused by traditional single-sided clamping, ensures that the grinding reference surface is perpendicular to the grinding wheel axis, and makes the integral bearing bush subjected to uniform force in both directions. This effectively eliminates clamping deformation, improves grinding cylindricity, and reduces the production scrap rate.

[0040] (5) The high-precision automated grinding production line for bearing bushes uses the first motor of the first motor mechanism to start the first grinding wheel assembly of the first grinding component to grind the inner ring of the integral bearing bush, and at the same time, uses the second motor of the second motor mechanism to start the second grinding wheel assembly of the second grinding component to grind the outer ring of the integral bearing bush. The double surface processing of the bearing bush is completed in a single clamping, thereby improving the grinding efficiency of the bearing bush.

[0041] (6) The high-precision automated grinding production line for bearing bushes, by setting first auxiliary rollers on both sides of the abutment roller, assists in arc-shaped limiting of the bearing bush, and by setting auxiliary mechanisms on both sides of the second grinding assembly to assist in arc-shaped limiting of the bearing bush, the movement path of the bearing bush under the operation of the first grinding assembly and the second grinding assembly can be optimized. Thus, for split bearing bushes, two split bearing bushes can be spliced ​​together and ground synchronously, thereby broadening the types of bearing bushes that can be processed and improving the scope of application.

[0042] (7) In the high-precision automated grinding production line for bearing bushes, during the synchronous grinding of split bearing bushes, the sliding device is activated so that the pressure ring slides down along it and fits against the upper end face of the bearing bush. When the gap between the two split bearing bushes is just at the grinding assembly, the pressing of the pressure ring can stabilize the bearing bush assembly and improve the grinding stability. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the present invention;

[0044] Figure 2 This is a top view schematic diagram of the structure of the present invention;

[0045] Figure 3 This is a schematic diagram of the tabletop mechanism of the present invention;

[0046] Figure 4 This is a schematic diagram of the tabletop mechanism connection of the present invention;

[0047] Figure 5 This is a bottom view of the tabletop mechanism connection of the present invention;

[0048] Figure 6 This is a schematic diagram of the first grinding assembly of the present invention;

[0049] Figure 7 This is a schematic diagram of the first motor mechanism of the present invention;

[0050] Figure 8 This is a schematic diagram of the first grinding shaft mechanism of the present invention;

[0051] Figure 9 This is a schematic diagram of the elastic bushing assembly of the present invention;

[0052] Figure 10 This is a schematic diagram of the grinding wheel assembly of the present invention;

[0053] Figure 11 This is a schematic diagram of the second shoulder assembly of the present invention;

[0054] Figure 12 This is a schematic diagram of the first pressing mechanism of the present invention;

[0055] Figure 13 This is a schematic diagram of the contact mechanism of the present invention;

[0056] Figure 14 This is a schematic diagram of the main body of the contact mechanism of the present invention;

[0057] Figure 15 This is a schematic diagram of the first auxiliary roller of the present invention;

[0058] Figure 16 This is a schematic diagram of the auxiliary mechanism of the present invention;

[0059] Figure 17 This is a schematic diagram of the second grinding assembly of the present invention;

[0060] Figure 18 This is a schematic diagram of the second motor mechanism of the present invention.

[0061] In the diagram: 1. Tabletop mechanism; 101. Tabletop; 102. Table leg; 103. Fixed groove; 104. Slide groove; 105. Slide rail; 2. First motor mechanism; 201. First motor; 202. First machine shaft; 3. First grinding shaft mechanism; 301. First shoulder; 302. First assembly groove; 303. Sleeve; 304. Bone plate; 305. Shaft sleeve; 306. Sleeve sleeve; 307. Grinding wheel; 308. Third assembly groove; 309. Second shoulder; 310. Second assembly groove; 311. Tool hole; 4. First pressing mechanism; 401. Pressure ring; 402. Slide shaft; 403. Stop block; 4 04. Slider; 5. Second motor mechanism; 501. Second motor; 502. Second machine 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

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] Example: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 13 , Figure 14 The high-precision automated grinding production line for bearing bushes includes a table mechanism 1, which includes a tabletop 101 and table legs 102 for support fixedly connected to the four corners of the lower surface of the tabletop 101.

[0064] A fixed groove 103 is provided through the center of the surface of the desktop 101;

[0065] A sliding groove 104 is provided next to the fixed groove 103, which runs through the tabletop 101;

[0066] A first grinding assembly for grinding the inner circle of the bearing bush is fixedly installed inside the groove 103;

[0067] A second grinding component for grinding the outer diameter of the bearing bush is slidably disposed in the groove 104;

[0068] A contacting mechanism 8 for abutting the bearing bush is provided on the side of the first grinding assembly away from the second grinding assembly. The contacting mechanism 8 includes a second cylinder 801 fixedly connected to the table 101. A cylinder plate 802 is fixedly connected to the output end of the second cylinder 801. A disc 803 is fixedly connected to the upper end of the inner surface of the cylinder plate 802. A column shaft 804 is fixedly inserted through the middle of the surface of the disc 803. A contacting roller 805 adapted to the cylinder plate 802 is movably sleeved at the lower end of the column shaft 804.

[0069] Please see Figure 3 The slide rails 105 are fixedly embedded on the desktop 101 on both sides of the slide 104.

[0070] Please see Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 17 , Figure 18 The first grinding assembly includes a first motor mechanism 2, a first grinding shaft mechanism 3, and a first pressing mechanism 4;

[0071] The first motor mechanism 2 includes a first motor 201 fixedly connected to the lower surface of the desktop 101, and the output end of the first motor 201 is fixedly connected to a first shaft 202 that passes through the fixed groove 103.

[0072] The first machine shaft 202 is fixedly sleeved onto the first grinding shaft mechanism 3.

[0073] The first grinding shaft mechanism 3 includes, from bottom to top, a first shoulder assembly, a first elastic bushing assembly, a first grinding wheel assembly, a second elastic bushing assembly, and a second shoulder assembly;

[0074] The first shoulder assembly includes a first shoulder 301 that is fixedly sleeved onto the first machine shaft 202. The first shoulder 301 is adapted to the insertion groove 103. A first assembly groove 302 adapted to the first elastic bushing assembly is provided on the lower inner wall of the first shoulder 301.

[0075] The first elastic bushing assembly includes a housing 303 adapted to be inserted into the first assembly groove 302, and bone pieces 304 are fixedly connected at equal intervals and evenly in the middle of the inner sidewall of the housing 303.

[0076] The first grinding wheel assembly includes a cylinder 305 that is fixedly sleeved on the first machine shaft 202. The end of the cylinder 305 is inserted into the first elastic bushing assembly and the second elastic bushing assembly respectively. A sleeve 306 is fixedly sleeved on the outside of the cylinder 305. A grinding wheel 307 is fixedly sleeved on the outside of the sleeve 306. A third mounting groove 308 is provided on both the upper and lower end faces of the sleeve 306. The third mounting groove 308 is adapted to both the first elastic bushing assembly and the second elastic bushing assembly.

[0077] The second elastic bushing assembly has the same structure as the first elastic bushing assembly;

[0078] The second shoulder assembly includes a second shoulder 309 that is fixedly sleeved onto the first machine shaft 202. A second mounting groove 310 adapted to the second elastic bushing assembly is provided on the lower surface of the second shoulder 309. A tool hole 311 is provided evenly and equidistantly through the surface of the second shoulder 309.

[0079] The first pressing mechanism 4 includes a pressing ring 401 adapted to connect with the grinding wheel 307. The pressing ring 401 is located below the second shoulder 309. The upper end face of the pressing ring 401 is fixedly connected with sliding shafts 402 corresponding to the tool hole 311 at equal intervals. Each sliding shaft 402 is fixedly connected with a stop block 403 at its upper end. The radius of the stop block 403 is larger than the radius of the tool hole 311.

[0080] Each slide shaft 402 is fitted with a slider 404 that is fixedly inserted into the device hole 311.

[0081] 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.

[0082] The second motor mechanism 5 includes a second motor 501 located on the lower surface of the desktop 101, and the output end of the second motor 501 is fixedly connected to a second shaft 502 that passes through the slide groove 104.

[0083] The second machine shaft 502 is fixedly sleeved onto the second grinding shaft mechanism 6;

[0084] The 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.

[0085] The second grinding shaft mechanism 6 has the same structure as the first grinding shaft mechanism 3, and the second grinding shaft mechanism 6 includes a second grinding wheel assembly.

[0086] Please see Figure 13 , Figure 15 The two sides of the abutting roller 805 are symmetrically provided with first auxiliary rollers 806, and the upper middle part of the first auxiliary roller 806 is fixedly connected with a first roller shaft 807.

[0087] An adjusting arm assembly is provided between the first roller shaft 807 and the column shaft 804;

[0088] The adjusting arm assembly includes a first sleeve 808 that is movably connected to a column shaft 804, a torsion spring 809 that is fixedly connected between the first sleeve 808 and the column shaft 804, an electric telescopic rod 810 that is fixedly connected to one side of the first sleeve 808, and a second sleeve 811 that is movably connected to a first roller shaft 807 that is fixedly connected to one end of the electric telescopic rod 810 away from the first sleeve 808.

[0089] Please see Figure 16 The second grinding assembly is symmetrically provided with auxiliary mechanisms 9 on both sides. Each auxiliary mechanism 9 includes a second auxiliary roller 901. A second roller shaft 902 is vertically inserted through the middle of the second auxiliary roller 901. The lower end of the second roller shaft 902 is fixedly connected to the rail block 903 of the sliding rail 105. A pressure sensor 904 is fixedly inserted into the inner side of the second auxiliary roller 901.

[0090] The working principle of this invention is as follows:

[0091] The axial compression deformation of the thin-walled cylindrical first and second elastic bushing assemblies can completely fill the micro-assembly gap between the first shoulder assembly, the second shoulder assembly and the grinding wheel assembly, and generate a stable preload. This preload not only counteracts the axial force during grinding, but also reduces the axial runout distance of the grinding wheel assembly through the uniform deformation of the first and second elastic bushing assemblies, thereby improving the accuracy of axial positioning and effectively eliminating the assembly gap.

[0092] The thin-walled structure of the first and second elastic bushing assemblies is compressed and exhibits linear elasticity when the grinding wheel assembly is loaded. When the grinding wheel assembly rotates at high speed and generates periodic axial vibration, the elastic bushing assembly absorbs energy through deformation, avoiding axial movement caused by gaps. The axial vibration amplitude of the grinding wheel assembly is reduced, significantly improving the grinding accuracy of the bearing surface.

[0093] The slight deformation of the elastic bushing assembly can achieve flexible fit to address the flatness error or parallelism deviation of the shoulder assembly and the grinding wheel assembly, thereby improving the uniformity of pressure distribution on the contact surface of the shoulder assembly and the grinding wheel assembly, reducing the local stress at the connection, homogenizing the geometric error of the connection, and extending the service life of the grinding wheel assembly.

[0094] The sleeve 306 of the grinding wheel assembly has a third mounting groove 308, the first shoulder assembly has a first mounting groove 302, and the second shoulder assembly has a second mounting groove 310, all of which are adapted to the elastic bushing assembly. This shortens the assembly time of the elastic bushing assembly, and the elastic bushing assembly has high alignment accuracy, improved replacement efficiency, and enhanced assembly convenience.

[0095] The inner side of the sleeve 303 is uniformly and evenly connected with the bone pieces 304. When the grinding wheel assembly and the shoulder assembly are assembled, the deformation of the sleeve 303 causes the bone pieces 304 to approach each other, which helps to improve the rigidity of the elastic bushing assembly, prevents the elastic bushing from being overloaded or loosened, and improves reliability.

[0096] The integral bearing bush is synchronously clamped by the first grinding wheel assembly and the abutment roller 805, while the second grinding wheel assembly abuts against the integral bearing bush from the other side, forming a rigid three-point positioning. The clamping force is precisely controlled by the second cylinder 801 of the abutment mechanism 8 and the first cylinder 503 of the second motor mechanism 5, avoiding the bearing bush skew caused by traditional single-sided clamping, ensuring that the grinding reference surface is flush with the perpendicularity of the grinding wheel axis, so that the integral bearing bush is subjected to uniform force in both directions, effectively eliminating clamping deformation, improving grinding cylindricity, and reducing the production scrap rate.

[0097] The first motor 201 of the first motor mechanism 2 starts the first grinding wheel assembly of the first grinding component to perform inner ring grinding on the integral bearing. At the same time, the second motor 501 of the second motor mechanism 5 starts the second grinding wheel assembly of the second grinding component to perform outer ring grinding on the integral bearing. The double-surface processing of the bearing is completed in a single clamping, thereby improving the grinding efficiency of the bearing.

[0098] By setting first auxiliary rollers 806 on both sides of the abutment roller 805, the bearing bush can be arc-shapedly limited. By setting auxiliary mechanisms 9 on both sides of the second grinding assembly, the movement path of the bearing bush under the operation of the first and second grinding assemblies can be optimized. Thus, for split bearing bushes, two split bearing bushes can be spliced ​​together and ground synchronously, thereby broadening the types of bearing bushes that can be processed and improving the scope of application.

[0099] During the synchronous grinding of the split bearing bush assembly, the sliding device 404 is activated, causing the pressure ring 401 to slide down and fit against the upper end face of the bearing bush. When the gap between the two spliced ​​split bearing bushes is just at the grinding assembly, the pressing of the pressure ring 401 can stabilize the splicing of the bearing bushes and improve the grinding stability.

[0100] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision automated grinding production line for bearing bushes, including a table mechanism (1), wherein 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). Its features are: A solid groove (103) is provided through the center of the surface of the desktop (101). A sliding groove (104) is provided next to the fixed groove (103) and extends through the tabletop (101). A first grinding assembly for grinding the inner circle of the bearing bush is fixedly installed in the groove (103); A second grinding assembly for grinding the outer circle of the bearing bush is slidably disposed in the groove (104); The first grinding assembly is provided with an abutting mechanism (8) for abutting the bearing on the side away from the second grinding assembly. 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). A disc (803) is fixedly connected to the upper end of the inner surface of the cylinder plate (802). A column shaft (804) is fixedly inserted through the middle of the surface of the disc (803). The lower end of the column shaft (804) is movably sleeved with an abutting roller (805) adapted to the cylinder plate (802). 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 desktop (101), and the output end of the first motor (201) is fixedly connected to a first shaft (202) through a slot (103). The first machine shaft (202) is fixedly sleeved onto the first grinding shaft mechanism (3); The first grinding shaft mechanism (3) includes, from bottom to top, a first shoulder assembly, a first elastic bushing assembly, a first grinding wheel assembly, a second elastic bushing assembly, and a second shoulder assembly; The first shoulder assembly includes a first shoulder (301) that is fixedly sleeved with the first machine shaft (202), the first shoulder (301) is adapted to the insertion groove (103), and a first assembly groove (302) adapted to the first elastic bushing assembly is provided on the lower inner wall of the first shoulder (301). The first elastic bushing assembly includes a sleeve (303) adapted to be inserted into the first mounting groove (302), and bone pieces (304) are fixedly connected at equal intervals and evenly in the middle of the inner sidewall of the sleeve (303). The first grinding wheel assembly includes a cylinder (305) that is fixedly sleeved on the first machine shaft (202). The end of the cylinder (305) is inserted into the first elastic bushing assembly and the second elastic bushing assembly respectively. A sleeve (306) is fixedly sleeved on the outside of the cylinder (305). A grinding wheel (307) is fixedly sleeved on the outside of the sleeve (306). A third assembly groove (308) is provided on both the upper and lower end faces of the sleeve (306). The third assembly groove (308) is adapted to both the first elastic bushing assembly and the second elastic bushing assembly. The second elastic bushing assembly and the first elastic bushing assembly have the same structure; The second shoulder assembly includes a second shoulder (309) that is fixedly sleeved with the first machine shaft (202). A second mounting groove (310) adapted to the second elastic bushing assembly is provided on the lower surface of the second shoulder (309). A tool hole (311) is provided through the surface of the second shoulder (309) at equal and uniform intervals. The first pressing mechanism (4) includes a pressing ring (401) adapted to be connected to a grinding wheel (307). The pressing ring (401) is located below the second shoulder (309). The upper end face of the pressing ring (401) is fixedly connected with sliding shafts (402) corresponding to the tool holes (311) at equal intervals. Each sliding shaft (402) is fixedly connected with a stop block (403) at its upper end. Each of the slide shafts (402) is fitted with a slider (404) that is fixedly inserted into the device hole (311).

2. The high-precision automated grinding production line for bearing bushes according to claim 1, characterized in that: The slide (104) has slide rails (105) fixedly embedded on the tabletop (101) on both sides.

3. The high-precision automated grinding production line for bearing bushes according to claim 1, 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 desktop (101), and the output end of the second motor (501) is fixedly connected to a second shaft (502) that passes through the slide groove (104). The second machine shaft (502) is fixedly sleeved onto the second grinding shaft mechanism (6); The second motor (501) has a first cylinder (503) fixedly connected to the side of its fixed end, and the first cylinder (503) is fixedly connected to the lower surface of the table (101); The second grinding shaft mechanism (6) has the same structure as the first grinding shaft mechanism (3), and the second grinding shaft mechanism (6) includes a second grinding wheel assembly.

4. The high-precision automated grinding production line for bearing bushes according to claim 1, characterized in that: The abutting roller (805) is symmetrically provided with first auxiliary rollers (806) on both sides, 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) that is movably connected to a column shaft (804), a torsion spring (809) that is fixedly connected between the first sleeve (808) and the column shaft (804), an electric telescopic rod (810) that is fixedly connected to one side of the first sleeve (808), and a second sleeve (811) that is movably connected to a first roller shaft (807) that is fixedly connected to one end of the electric telescopic rod (810) away from the first sleeve (808).

5. The high-precision automated grinding production line for bearing bushes according to claim 2, characterized in that: The second grinding assembly is symmetrically provided with auxiliary mechanisms (9) on both sides. Each auxiliary mechanism (9) includes a second auxiliary roller (901). A second roller shaft (902) is vertically inserted through the middle of the second auxiliary roller (901). The lower end of the second roller shaft (902) is fixedly connected to the rail block (903) of the sliding rail (105). A pressure sensor (904) is fixedly inserted on the inner side of the second auxiliary roller (901).

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