Axle housing grinding device and grinding method

Abstract

The invention relates to the technical field of workpiece grinding, in particular to an axle housing grinding device and a grinding method.The axle housing grinding device comprises a base plate, a supporting frame is fixedly installed on one side of the upper end face of the base plate, two symmetrically-arranged n-shaped plates are fixedly installed on the lower side of the supporting frame, and two symmetrically-arranged electric push plates are fixedly installed on the lower end faces of the n-shaped plates; according to the bearing bush grinding device, the cleaning roller is located below the grinding belt, dust impurities on the grinding belt can be cleaned in time, the problem that the grinding quality is affected due to adhesion of the dust impurities on the grinding belt is effectively avoided, meanwhile, comprehensive grinding of a bearing bush is met, and when the bearing bush is ground, the grinding quality is improved. The grinding strength of the grinding belt can be rapidly, simply and conveniently controlled, the arranged sliding rod can tighten the loose grinding belt in time under the cooperation of the spring, and the situation that after the grinding belt completes the bearing bush grinding operation, the grinding belt loses abutting of one side and then gets loose after the bearing bush is taken out is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece grinding, and specifically relates to a bridge housing grinding device and a grinding method. Background Art

[0002] The bridge housing is not only a component of the transmission system, but also a component of the running gear system. The bearing bush on the bridge housing plays a very important role in mechanical transmission, including functions such as friction protection, lubrication, load bearing, axial positioning and support, and cooling.

[0003] The prior art discloses a Chinese patent with the application number CN202411064715.3, an electric drive axle housing grinding device, and discloses that a servo motor drives two grinding discs to continuously reciprocate in the bearing bush groove, and the grinding motor drives the two grinding discs to rotate through a transmission component, so that the bottom surface and two side surfaces of the bearing bush groove can be ground simultaneously, thereby improving the grinding efficiency of the bearing bush groove.

[0004] Although the above device can grind the bearing bush on the bridge housing, there are still some defects in use: 1. Since the specifications of some bearing bushes are different, a single grinding cannot be applied to bearing bushes of multiple specifications during grinding, and the above device can only grind the inner side of the bearing bush, and the outer arc of the bearing bush cannot be ground; 2. Since the outside of the bearing bush is semicircular, conventional grinding cannot fully cover and grind it, and the grinding belt is extremely likely to fall off after the bearing bush is taken out. Summary of the Invention

[0005] The purpose of the present invention is to provide a bridge housing grinding device and a grinding method to solve the problem of synchronous grinding of the inside and outside of the bearing bush proposed in the above background art.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A bridge housing grinding device includes a base plate. On one side of the upper end surface of the base plate, a support frame is fixedly installed. On the lower side of the support frame, two symmetrically arranged U-shaped plates are fixedly installed. On the lower end surface of the U-shaped plates, two symmetrically arranged electric push plates are fixedly installed. Between the two electric push plates on the same side, a lower roller is rotatably installed. In the middle of the support frame, two symmetrically arranged adjustment slots are provided. In the adjustment slots, a moving block is slidably installed through an electric slider. Between the two moving blocks, an upper roller is rotatably installed through a motor. A grinding belt is jointly installed between the upper roller and the lower roller. On the upper end surface of the base plate, a placement rack is fixedly installed. A cleaning component is provided on the lower side of the electric push plate. A tensioning unit is fixedly installed inside the electric push plate. In the middle of the support frame, a pressing unit for pressing the grinding belt is fixedly installed. On the front and back of the base plate, an inner grinding unit is jointly installed.

[0007] Preferably, two front and rear corresponding limiting plates are slidably mounted on the upper end surface of the placement rack. Two symmetrically arranged sliding rods are slidably mounted on the outer side of the U-shaped plate. End plates are fixedly mounted at the ends of the sliding rods. Springs are sleeved on the outer parts of the sliding rods. Two symmetrically arranged stretching rollers are commonly mounted between the front and rear end plates. The two stretching rollers are respectively located inside and outside the grinding belt.

[0008] Preferably, the cleaning assembly includes a folding plate. Corresponding positioning grooves are respectively formed in the lower parts of the folding plate and the electric push plate. A clamping plate for fixing the folding plate and the electric push plate is arranged in the positioning groove. A cleaning roller is commonly mounted between two corresponding front and rear folding plates. The cleaning roller is located below the grinding belt.

[0009] Preferably, the tensioning unit includes an outer edge plate fixedly mounted on the inner side of the electric push plate. A rectangular groove is formed in the middle of the outer edge plate. A moving shaft is slidably mounted in the rectangular groove. A tensioning roller is commonly mounted between the front and rear moving shafts. An outer frame is fixedly mounted on the outer part of the moving shaft. A cylinder is commonly mounted between the outer frame and the electric push plate.

[0010] Preferably, the abutting unit includes an arc-shaped frame. A plurality of equally spaced telescopic rods are fixedly mounted on the inner side of the arc-shaped frame. A vertically arranged mounting frame is fixedly mounted on the lower end surface of the telescopic rod. An abutting roller for contacting the grinding belt is rotatably mounted below the mounting frame.

[0011] Preferably, symmetrically arranged vertical plates are fixedly mounted in the middle of the front and rear sides of the substrate. Outer cylinders are rotatably mounted on one side close to each other of the two vertical plates through motors. An end groove is formed in the upper end surface of the outer cylinder. An inner cylinder is arranged in the outer cylinder. A spring is mounted between the outer cylinder and the inner cylinder. A contact plate located in the end groove is fixedly mounted on the upper end surface of the inner cylinder. One side of the contact plate is arc-shaped. A support plate fixed to the vertical plate is arranged on one side of the contact plate. A cam is mounted on the upper end surface of the support plate through a motor. A clamp is arranged inside the inner cylinder.

[0012] Preferably, the inner grinding unit includes a central rod. The central rod is fixedly mounted between the two inner cylinders through a clamp. A fixed sleeve is fixedly mounted in the middle of the central rod. A plurality of circumferentially arranged telescopic plates are fixedly mounted on the outer edge of the fixed sleeve. Grinding knives are fixedly mounted at the ends of the telescopic plates. A rotating ring is rotatably mounted on one side of the fixed sleeve through an electric slider. A plurality of circumferentially arranged pushing plates are hinged on the rotating ring. One end of the pushing plate away from the rotating ring is hinged to one side of the telescopic plate.

[0013] Preferably, ear plates are mounted on both sides of the telescopic plate. Folding angle plates are commonly hinged between the ear plates on every two adjacent telescopic plates. A sleeve plate is sleeved on the outer side of the folding angle plate. A hydraulic rod is commonly mounted between the sleeve plate and the fixed sleeve. A coating rack is fixedly mounted on the coaxial outer side of the folding angle plate.

[0014] A sponge is arranged on the coating rack. The sponge is infiltrated with a coolant.

[0015] Another object of the present invention is to provide a grinding method for a bridge housing grinding device, comprising the following steps: S1: Placing the inner bearing shell of the bridge housing: The inner bearing shell of the bridge housing is placed on the placing rack with the opening facing downwards. Subsequently, the electric slider is activated to drive the sliding of two limiting plates towards each other until the front and rear ends of the bearing shell are limited and fixed, so as to synchronously grind the inside and outside of the bearing shell subsequently. S2: Grinding operation: The motor is activated to drive the upper roller to rotate until the grinding belt rotates, thereby realizing the grinding operation on the outside of the bearing shell. And the setting of the abutting unit enables the grinding belt to always fit on the outside of the bearing shell when grinding the bearing shell.

[0016] Advantages of the present invention: 1. Through the setting of the limiting plates, the present invention can limit the bearing shell of the workpiece placed on the placing rack, avoiding sliding during the grinding operation. And through the displacement between the limiting plates, it can also be applied to the fixed limit when grinding bearing shells of different sizes, making its application more extensive. After the bearing shell is polished and taken out, the part of the grinding belt that fits the bearing shell loses abutment and collapses. Under the setting of the sliding rod and the spring, due to the elastic force of the spring, it can drive the sliding rod to slide outwards. At this time, the two stretching rollers on the end plate tightly stretch the collapsed part of the grinding belt outwards in time, thus effectively avoiding the loosening of the grinding belt after the bearing shell is removed from grinding. Compared with the existing device, the present invention can fix different specifications of bearing shells during grinding. At the same time, the set sliding rod, in cooperation with the spring, can also tightly stretch the loosened grinding belt in time, avoiding the loosening of the grinding belt after the grinding operation of the bearing shell is completed and the bearing shell is taken off.

[0017] 2. Through the setting of the limiting plates, the present invention can limit the bearing shell of the workpiece placed on the placing rack, avoiding sliding during the grinding operation. And through the displacement between the limiting plates, it can also be applied to the fixed limit when grinding bearing shells of different sizes, making its application more extensive. After the bearing shell is polished and taken out, the part of the grinding belt that fits the bearing shell loses abutment and collapses. Under the setting of the sliding rod and the spring, due to the elastic force of the spring, it can drive the sliding rod to slide outwards. At this time, the two stretching rollers on the end plate tightly stretch the collapsed part of the grinding belt outwards in time, thus effectively avoiding the loosening of the grinding belt after the bearing shell is removed from grinding. Compared with the existing device, the present invention can fix different specifications of bearing shells during grinding. At the same time, the set sliding rod, in cooperation with the spring, can also tightly stretch the loosened grinding belt in time, avoiding the loosening of the grinding belt after the grinding operation of the bearing shell is completed and the bearing shell is taken off.

[0018] 3. When the present invention grinds the outside of the bearing shell by rotating the grinding belt, the generated dust and impurities adhere to the surface of the grinding belt. Since the cleaning roller is located below the grinding belt, it can timely clean the dust and impurities on the grinding belt, effectively avoiding the problem that the adhesion of dust and impurities on the grinding belt affects the grinding quality. When the cylinders push forward towards each other, at this time, the two cylinders on both sides drive the two tensioning rollers to approach each other respectively. At this time, when the two tensioning rollers approach each other, the grinding belt is tightened, thereby strengthening the grinding force of the grinding belt. When the cylinders on both sides retract away from each other, at this time, the grinding belt is loosened, and the grinding force when the grinding belt grinds the bearing shell is weakened. Moreover, due to the special positions of the two tensioning rollers, the grinding belt can also fully cover the outer arc of the semi-circle of the bearing shell, effectively solving the problem in the prior art that the bearing shell cannot be evenly ground due to its special shape. Compared with the existing device, the present invention can meet the comprehensive grinding of the bearing shell, and when grinding it, can quickly and simply control the intensity of grinding.

[0019] 4. Through the setting of the arc-shaped frame, the present invention can enable the abutting rollers below the multiple telescopic rods to fully and comprehensively press the grinding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings; Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the overall front structural schematic diagram of the present invention; Figure 3 is the overall side-sectional structural schematic diagram of the present invention; Figure 4 is the partial side-sectional structural schematic diagram of the present invention; Figure 5 is the structural schematic diagram of the inner grinding unit of the present invention; Figure 6 is the partial structural schematic diagram of the present invention.

[0021] The reference numerals in the drawings are as follows: 1. Substrate; 10. Support frame; 101. Regulation groove; 102. Moving block; 103. Upper roller; 11. C-shaped plate; 12. Electric push plate; 121. Lower roller; 122. Folding plate; 123. Positioning groove; 124. Clamping plate; 125. Cleaning roller; 13. Grinding belt; 14. Placing rack; 141. Limiting plate; 15. Outer edge plate; 151. Rectangular groove; 152. Moving shaft; 153. Tensioning roller; 154. Outer frame; 155. Cylinder; 16. Slide bar; 161. End plate; 162. Tensile roller; 17. Arc-shaped frame; 171. Telescopic rod; 172. Mounting rack; 173. Contact roller; 21. Vertical plate; 211. Support plate; 212. Cam; 22. Outer cylinder; 23. End groove; 24. Inner cylinder; 241. Contact plate; 3. Central rod; 31. Fixed sleeve; 32. Telescopic plate; 33. Grinding knife; 34. Rotating ring; 35. Pushing plate; 36. Folding angle plate; 37. Sleeve plate; 38. Hydraulic rod; 39. Coating rack. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As shown in the attached Figure 1-6 figure, a bridge housing grinding device includes a substrate 1. On one side of the upper end surface of the substrate 1, a support frame 10 is fixedly installed. On the lower side of the support frame 10, two symmetrically arranged C-shaped plates 11 are fixedly installed. On the lower end surface of the C-shaped plates 11, two symmetrically arranged electric push plates 12 are fixedly installed. Between the two electric push plates 12 on the same side, a lower roller 121 is rotatably installed. In the middle of the support frame 10, two symmetrically arranged regulation grooves 101 are opened. In the regulation grooves 101, a moving block 102 is slidably installed through an electric slider. Between the two moving blocks 102, an upper roller 103 is rotatably installed through a motor. A grinding belt 13 is jointly installed between the upper roller 103 and the lower roller 121. On the upper end surface of the substrate 1, a placing rack 14 is fixedly installed. A cleaning assembly is arranged on the lower side of the electric push plate 12. A tensioning unit is fixedly installed inside the electric push plate 12. In the middle of the support frame 10, a contact unit for pressing the grinding belt 13 is fixedly installed. Inside and outside the substrate 1, an inner grinding unit is jointly installed.

[0024] The electric slider is used to control the up-and-down sliding of the moving block 102 in the regulation groove 101. When the moving block 102 slides up and down, it synchronously drives the upper roller 103 to move up and down. When the upper roller 103 moves up, it can regulate the tightness of the grinding belt 13, so as to regulate the force when the grinding belt 13 grinds the outside of the bearing bush. Through the setting of the cleaning component, the dust and impurities adhered to the grinding belt 13 during the grinding of the outside of the bearing bush can be cleaned and removed, avoiding the impurities adhered to the grinding belt 13 from affecting the grinding quality of the bearing bush. Through the setting of the abutting unit, when the grinding belt 13 grinds the outside of the bearing bush, according to the different arc sizes of the bearing bush, the grinding belt 13 can be precisely attached to the outside of the bearing bush, meeting the use of bearing bushes of different sizes. Through the setting of the internal grinding unit, the inside of the bearing bush can be ground, so as to cooperate with the grinding belt 13 for synchronous grinding operations on its outside and inside. And the setting of the internal grinding unit can also move back and forth during the circumferential grinding of the inside of the bearing bush, meeting the combined grinding operations on the axial and radial directions inside the bearing bush. Compared with the existing grinding devices, the present invention can perform synchronous grinding operations on the inside and outside during the grinding of the bearing bush, and can perform targeted grinding operations according to the particularity of the bearing bush shape.

[0025] As shown in the Figure 1 attachment, two front and rear corresponding limit plates 141 are slidably installed on the upper end surface of the placement rack 14 through electric sliders. Two symmetrically arranged sliding rods 16 are slidably installed on the outside of the U-shaped plate 11. End plates 161 are fixedly installed at the ends of the sliding rods 16. Springs are sleeved on the outside of the sliding rods 16. Two symmetrically arranged tension rollers 162 are commonly installed between the front and rear end plates 161. The two tension rollers 162 are respectively located on the inside and outside of the grinding belt 13.

[0026] Through the setting of the limit plates 141, the workpiece bearing bush placed on the placement rack 14 can be limited, avoiding sliding during the grinding operation. And through the displacement between the limit plates 141, it can also be applied to the fixed limit during the grinding of bearing bushes of different sizes, making its application more extensive. After the bearing bush is removed after grinding, the part of the grinding belt 13 attached to the bearing bush collapses after losing the abutment. Under the setting of the sliding rods 16 and the springs, due to the elastic force of the springs, the sliding rods 16 can be driven to slide outwards. At this time, the two tension rollers 162 on the end plates 161 timely tighten the collapsed part of the grinding belt 13 outwards, effectively avoiding the loosening of the grinding belt 13 after the bearing bush is removed from the grinding. Compared with the existing devices, the present invention can fix the bearing bushes of different specifications during grinding. At the same time, the sliding rods 16 set in cooperation with the springs can also timely tighten the loosened grinding belt 13, avoiding the loosening of the grinding belt 13 after the grinding operation of the completed bearing bush and after the bearing bush is removed.

[0027] As shown in the Figure 6As shown, the cleaning component includes a folding plate 122. Corresponding positioning grooves 123 are provided in both the lower part of the folding plate 122 and the electric push plate 12. A clamping plate 124 for fixing the folding plate 122 and the electric push plate 12 is provided in the positioning groove 123. A cleaning roller 125 is commonly installed between two corresponding folding plates 122 in the front and back. The cleaning roller 125 is located below the grinding belt 13.

[0028] When the grinding belt 13 rotates to perform grinding operations on the outside of the bearing bush, the generated dust and impurities adhere to the surface of the grinding belt 13. Since the cleaning roller 125 is located below the grinding belt 13, it can timely clean the dust and impurities on the grinding belt 13, effectively avoiding the problem that the adhesion of dust and impurities on the grinding belt 13 affects the grinding quality.

[0029] The tensioning unit includes an outer edge plate 15 fixedly installed inside the electric push plate 12. A rectangular groove 151 is provided in the middle of the outer edge plate 15. A moving shaft 152 is slidably installed in the rectangular groove 151. A tensioning roller 153 is commonly installed between two moving shafts 152 in the front and back. An outer frame 154 is fixedly installed on the outside of the moving shaft 152. A cylinder 155 is commonly installed between the outer frame 154 and the electric push plate 12.

[0030] When adjusting the tension of the grinding belt 13, the cylinders 155 on both sides are opened to expand and contract at this time. When the cylinders 155 on both sides push forward while approaching each other, the cylinders 155 on both sides respectively drive the two tensioning rollers 153 to approach each other. At this time, when the two tensioning rollers 153 approach each other, the grinding belt 13 is tightened, thereby strengthening the grinding force of the grinding belt 13. When the cylinders 155 on both sides retract while moving away from each other, the grinding belt 13 is loosened at this time, and the grinding force when the grinding belt 13 grinds the bearing bush is weakened. And due to the special positions of the two tensioning rollers 153, the grinding belt 13 can also fully cover according to the outer arc of the semi-circle of the bearing bush, effectively solving the problem in the prior art that the bearing bush cannot be evenly ground due to its special shape. Compared with the existing device, the present invention can meet the full grinding of the bearing bush, and when grinding it, quickly and simply control the grinding intensity.

[0031] As shown in the attachment Figure 3 As shown, the abutting unit includes an arc-shaped frame 17. A plurality of equally spaced telescopic rods 171 are fixedly installed inside the arc-shaped frame 17. A vertically arranged mounting frame 172 is fixedly installed on the lower end surface of the telescopic rod 171. An abutting roller 173 for contacting the grinding belt 13 is rotatably installed below the mounting frame 172.

[0032] Through the setting of the arc-shaped frame 17, the abutting rollers 173 below the multiple telescopic rods 171 can fully and comprehensively press the grinding belt 13, enabling it to fit completely around the outside of the bearing shell. At the same time, the setting of the abutting rollers 173 can also not affect the rotation of the grinding belt 13, keeping the grinding belt 13 in close contact when grinding the outside of the bearing shell.

[0033] As shown in the Figure 4 attachment, symmetrically arranged vertical plates 21 are fixedly installed in the middle of the front and rear sides of the substrate 1. On the side where the two vertical plates 21 are close to each other, outer cylinders 22 are rotatably installed through motors. An end groove 23 is formed on the upper end surface of the outer cylinder 22. An inner cylinder 24 is arranged inside the outer cylinder 22. A spring is installed between the outer cylinder 22 and the inner cylinder 24. A contact plate 241 located in the end groove 23 is fixedly installed on the upper end surface of the inner cylinder 24. One side of the contact plate 241 is arc-shaped. A support plate 211 fixed to the vertical plate 21 is arranged on one side of the contact plate 241. A cam 212 is installed on the upper end surface of the support plate 211 through a motor. A fixture is arranged inside the inner cylinder 24.

[0034] Through the setting of the fixture, the inner grinding unit can be installed on the two inner cylinders 24. And when the inner grinding unit is performing grinding operations on the inner side of the bearing shell, the motor is turned on to drive the cam 212 to rotate. When the cam 212 rotates, it intermittently presses the contact plate 241. After being pressed, the contact plate 241 pushes the inner cylinder 24 to perform working movement inside the outer cylinder 22, so as to realize that while the inner grinding unit performs circumferential grinding operations on the inside of the bearing shell, it can also perform sliding grinding in the front and back directions.

[0035] As shown in the Figure 4 、 Figure 5 attachment, the inner grinding unit includes a central rod 3. The central rod 3 is fixedly installed between the two inner cylinders 24 through a fixture. A fixed sleeve 31 is fixedly installed in the middle of the central rod 3. A plurality of circumferentially arranged telescopic plates 32 are fixedly installed on the outer edge of the fixed sleeve 31. Grinding knives 33 are fixedly installed at the ends of the telescopic plates 32. A rotating ring 34 is rotatably installed on one side of the fixed sleeve 31 through an electric slider. A plurality of circumferentially arranged pushing plates 35 are hinged on the rotating ring 34. One end of the pushing plate 35 far from the rotating ring 34 is hinged to one side of the telescopic plate 32.

[0036] When the outer cylinder 22 is driven to rotate by the motor, the outer cylinder 22 drives the central rod 3, so that a plurality of grinding cutters 33 rotate, realizing the grinding operation on the inner side of the bearing shell. And when grinding bearing shells of different sizes, the electric slider is turned on to drive the rotating ring 34 to rotate. When the rotating ring 34 rotates, the telescopic plate 32 is pushed and pulled through a plurality of push plates 35. When a plurality of telescopic plates 32 are telescopic, at this time, a plurality of circumferentially arranged grinding cutters 33 abut against the inner side of the bearing shell, so as to realize the grinding of bearing shells of different specifications and sizes. And the movement of the grinding cutter 33 is driven by the telescopic movement of the telescopic plate 32, and the grinding intensity during the inner side grinding can also be adjusted. Compared with the existing device, the present invention can grind the inner side of bearing shells of different specifications after they are placed, and meet the grinding requirements of different intensities.

[0037] As shown in the Figure 5 accompanying drawings, ear plates are installed on both sides of the telescopic plate 32. A folding plate 36 is jointly hinged between the ear plates on every two adjacent telescopic plates 32. A sleeve plate 37 is sleeved outside the folding plate 36. A hydraulic rod 38 is jointly installed between the sleeve plate 37 and the fixed sleeve 31. A coating rack 39 is fixedly installed coaxially outside the folding plate 36.

[0038] By turning on the hydraulic rod 38 to push up, the middle part of the folding plate 36 moves close to the bearing shell. At this time, through the setting of the coating rack 39, the coolant inside it can be used to coat the bearing shell, so that it can be cooled during grinding, and at the same time, the lubrication during grinding can also be promoted.

[0039] The coating rack 39 is provided with a sponge, and the sponge is infiltrated with coolant.

[0040] Another object of the present invention is to provide a grinding method for a bridge shell grinding device, including the following steps: S1: Placing the bearing shell in the bridge shell: The bearing shell in the bridge shell is placed on the placing rack 14 with the opening facing downwards. Subsequently, the electric slider is turned on to drive the two limiting plates 141 to slide towards each other until the front and rear ends of the bearing shell are limited and fixed, so as to synchronously grind the inside and outside of the bearing shell subsequently; S2: Grinding operation: The motor is turned on to drive the upper roller 103 to rotate until the grinding belt 13 rotates, so as to realize the grinding operation on the outside of the bearing shell. And the setting of the abutting unit can make the grinding belt 13 always fit on the outside of the bearing shell when grinding the bearing shell.

[0041] When the present invention is in use, the bearing bush in the axle housing is placed on the placing rack 14 with the opening of the bearing bush facing downwards. The two limiting plates 141 slide towards each other to limit the front and rear ends thereof. The movable slider is actuated to control the moving block 102 to slide up and down in the regulation groove 101. When the moving block 102 slides up and down, it synchronously drives the upper roller 103 to move up and down. When the upper roller 103 moves upwards, it can regulate the tightness of the grinding belt 13, so as to regulate the force when the grinding belt 13 grinds the outside of the bearing bush. Through the arrangement of the cleaning assembly, it can clean and remove the dust and impurities adhered to the grinding belt 13 when the grinding belt 13 grinds the outside of the bearing bush, avoiding the influence of the impurities adhered to the grinding belt 13 on the grinding quality of the bearing bush. Through the arrangement of the abutting unit, when the grinding belt 13 grinds the outside of the bearing bush, according to the different arc sizes of the bearing bush, the grinding belt 13 can be precisely attached to the outside of the bearing bush, meeting the use of bearing bushes of different sizes. Through the arrangement of the internal grinding unit, it can grind the inside of the bearing bush, so as to cooperate with the grinding belt 13 for synchronous grinding operations on its outside and inside. Moreover, the arrangement of the internal grinding unit can also move back and forth when performing circumferential grinding on the inside of the bearing bush, meeting the combined grinding operations on the axial and radial directions inside the bearing bush. Compared with the existing grinding devices, the present invention can perform synchronous grinding operations on the inside and outside when grinding the bearing bush, and can perform targeted grinding operations according to the particularity of the bearing bush shape; After the bearing bush is taken out after grinding, the part of the grinding belt 13 attached to the bearing bush collapses after losing the abutment. Under the arrangement of the sliding rod 16 and the spring, due to the elastic force of the spring, it can drive the sliding rod 16 to slide outwards. At this time, the two stretching rollers 162 on the end plate 161 tightly stretch outwards in time the collapsed part of the loose grinding belt 13, thus effectively avoiding the loosening of the grinding belt 13 after the grinding of the bearing bush is cancelled. Compared with the existing devices, the present invention can fix the bearing bush of different specifications during grinding. At the same time, the arranged sliding rod 16, in cooperation with the spring, can also tightly stretch the loose grinding belt 13 in time, avoiding the loosening of the grinding belt 13 after the grinding operation of the bearing bush is completed and the bearing bush is taken off. When the grinding belt 13 rotates to grind the outside of the bearing bush, the generated dust and impurities adhere to the surface of the grinding belt 13. Through the cleaning roller 125 located below the grinding belt 13, it can clean the dust and impurities on the grinding belt 13 in time, effectively avoiding the problem that the adhesion of the dust and impurities on the grinding belt 13 affects the grinding quality; When adjusting the tightness of the grinding belt 13, the cylinders 155 on both sides are actuated to extend and retract. When the cylinders 155 on both sides move forward towards each other, the two tension rollers 153 are driven by the cylinders 155 on both sides to move closer to each other. At this time, the two tension rollers 153 tighten the grinding belt 13 when moving closer to each other, thereby enhancing the grinding force of the grinding belt 13. When the cylinders 155 on both sides retract away from each other, the grinding belt 13 is loosened, and at this time, the grinding force of the grinding belt 13 when grinding the bearing bush is weakened. Moreover, due to the special positions of the two tension rollers 153, the grinding belt 13 can fully cover the outer arc of the semi-circle of the bearing bush, effectively solving the problem in the prior art that the bearing bush cannot be evenly ground due to its special shape. Compared with the existing device, the present invention can satisfy the full grinding of the bearing bush and can quickly and simply control the grinding intensity during the grinding process. The setting of the arc-shaped frame 17 enables the abutting rollers 173 below the plurality of telescopic rods 171 to fully and comprehensively press the grinding belt 13, so that it fully fits outside the bearing bush. At the same time, the setting of the abutting rollers 173 can also not affect the rotation of the grinding belt 13, so that the grinding belt 13 remains tightly attached when grinding the outside of the bearing bush; The fixture enables the inner grinding unit to be installed on the two inner cylinders 24. And when the inner grinding unit is grinding the inner side of the bearing bush, the motor is turned on to drive the cam 212 to rotate. When the cam 212 rotates, it intermittently presses the contact plate 241. After being pressed, the contact plate 241 pushes the inner cylinder 24 to move operationally inside the outer cylinder 22, thereby realizing that while the inner grinding unit performs circumferential grinding on the inner part of the bearing bush, it can also perform sliding grinding back and forth. When the motor is turned on to drive the outer cylinder 22 to rotate, the outer cylinder 22 rotates the plurality of grinding knives 33 through the central rod 3, realizing the grinding operation on the inner side of the bearing bush. And when grinding bearing bushes of different sizes, the electric slider is turned on to drive the rotating ring 34 to rotate. When the rotating ring 34 rotates, it realizes the pushing and pulling of the telescopic plate 32 through the plurality of push plates 35. When the plurality of telescopic plates 32 expand and contract, at this time, the circumferentially arranged plurality of grinding knives 33 abut against the inner side of the bearing bush, thereby realizing the grinding of bearing bushes of different specifications. And by the expansion and contraction of the telescopic plate 32 driving the movement of the grinding knives 33, the grinding intensity during the inner grinding can also be regulated. Compared with the existing device, the present invention can grind the inner side of bearing bushes of different specifications after they are placed and can meet the grinding requirements of different intensity levels; When the hydraulic rod 38 is actuated to push upward, the middle part of the folding plate 36 moves closer to the bearing bush. At this time, through the setting of the coating rack 39, the coolant inside it can coat the bearing bush, so that it can be cooled down during grinding and at the same time, the lubrication during grinding can also be promoted.

[0042] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A bridge housing grinding device, comprising a substrate (1), characterized in that, On one side of the upper end surface of the substrate (1), a support frame (10) is fixedly installed. On the lower side of the support frame (10), two symmetrically arranged U-shaped plates (11) are fixedly installed. On the lower end surface of the U-shaped plate (11), two symmetrically arranged electric push plates (12) are fixedly installed. A lower roller (121) is rotatably installed between the two electric push plates (12) on the same side. In the middle of the support frame (10), two symmetrically arranged adjustment grooves (101) are formed. A moving block (102) is slidably installed in the adjustment groove (101) through an electric slider. An upper roller (103) is rotatably installed between the two moving blocks (102) through a motor. A grinding belt (13) is jointly installed between the upper roller (103) and the lower roller (121). A placement rack (14) is fixedly installed on the upper end surface of the substrate (1). A cleaning component is arranged below the electric push plate (12). A tensioning unit is fixedly installed inside the electric push plate (12). In the middle of the support frame (10), an abutting unit for pressing the grinding belt (13) is fixedly installed. Inner grinding units are jointly installed on the front and back of the substrate (1).

2. The bridge housing grinding device according to claim 1, characterized in that, The cleaning component includes a folding plate (122). Corresponding positioning grooves (123) are formed in both the lower part of the folding plate (122) and the electric push plate (12). A clamping plate (124) for fixing the folding plate (122) and the electric push plate (12) is arranged in the positioning groove (123). A cleaning roller (125) is jointly installed between the two corresponding folding plates (122) at the front and back. The cleaning roller (125) is located below the grinding belt (13).

3. The bridge housing grinding device according to claim 1, characterized in that, The tensioning unit includes an outer edge plate (15) fixedly installed inside the electric push plate (12). A rectangular groove (151) is formed in the middle of the outer edge plate (15). A moving shaft (152) is slidably installed in the rectangular groove (151). A tensioning roller (153) is jointly installed between the two moving shafts (152) at the front and back. An outer frame (154) is fixedly installed on the outer part of the moving shaft (152). A cylinder (155) is jointly installed between the outer frame (154) and the electric push plate (12).

4. A bridge housing grinding device according to claim 1, characterized in that, The abutting unit includes an arc-shaped frame (17). A plurality of equally spaced telescopic rods (171) are fixedly installed inside the arc-shaped frame (17). A vertically arranged mounting frame (172) is fixedly installed on the lower end surface of the telescopic rod (171). An abutting roller (173) for contacting the grinding belt (13) is rotatably installed below the mounting frame (172).

5. The bridge housing grinding device according to claim 1, characterized in that, On the middle parts of the front and rear sides of the substrate (1), symmetrically arranged vertical plates (21) are fixedly installed. On the side of each of the two vertical plates (21) close to each other, an outer cylinder (22) is rotatably installed through a motor. An end groove (23) is formed in the upper end surface of the outer cylinder (22). An inner cylinder (24) is arranged inside the outer cylinder (22). A spring is installed between the outer cylinder (22) and the inner cylinder (24). A contact plate (241) located in the end groove (23) is fixedly installed on the upper end surface of the inner cylinder (24). One side of the contact plate (241) is arc-shaped. A support plate (211) fixed to the vertical plate (21) is arranged on one side of the contact plate (241). A cam (212) is installed on the upper end surface of the support plate (211) through a motor. A fixture is arranged inside the inner cylinder (24).

6. The bridge housing grinding device according to claim 1, characterized in that, The inner grinding unit includes a central rod (3). The central rod (3) is fixedly installed between the two inner cylinders (24) through a fixture. A fixed sleeve (31) is fixedly installed in the middle of the central rod (3). A plurality of circumferentially arranged telescopic plates (32) are fixedly installed on the outer edge of the fixed sleeve (31). A grinding tool (33) is fixedly installed at the end of the telescopic plate (32). A rotating ring (34) is rotatably installed on one side of the fixed sleeve (31) through an electric slider. A plurality of circumferentially arranged pushing plates (35) are hinged on the rotating ring (34). The end of the pushing plate (35) away from the rotating ring (34) is hinged to one side of the telescopic plate (32).

7. The bridge housing grinding device according to claim 6, characterized in that, Earc plates are installed on both sides of the telescopic plate (32). A folding plate (36) is jointly hinged between the earc plates on every two adjacent telescopic plates (32). A sleeve plate (37) is sleeved outside the folding plate (36). A hydraulic rod (38) is jointly installed between the sleeve plate (37) and the fixed sleeve (31). A coating rack (39) is fixedly installed coaxially outside the folding plate (36).

8. The bridge housing grinding device according to claim 7, characterized in that, A sponge is arranged on the coating rack (39), and the sponge is infiltrated with a coolant.

9. The bridge housing grinding device according to claim 1, characterized in that, On the upper end surface of the placing rack (14), two front and rear corresponding limiting plates (141) are slidably installed through electric sliders. Two symmetrically arranged sliding rods (16) are slidably installed on the outside of the U-shaped plate (11). An end plate (161) is fixedly installed at the end of the sliding rod (16). A spring is sleeved outside the sliding rod (16). Two symmetrically arranged stretching rollers (162) are jointly installed between the front and rear two end plates (161). The two stretching rollers (162) are respectively located inside and outside the grinding belt (13).

10. A grinding method for a bridge housing grinding device, applied to a bridge housing grinding device described in claim 9, characterized in that, Including the following steps: S1: Placing the axle bush in the axle housing: The axle bush in the axle housing is placed on the placing rack (14) with the opening facing downwards. Subsequently, the electric slider is turned on to drive the two limiting plates (141) to slide towards each other until the front and rear ends of the axle bush are limited and fixed, so as to synchronously grind the inside and outside of the axle bush subsequently. S2: Grinding operation: The motor is turned on to drive the upper roller (103) to rotate until the grinding belt (13) rotates, so as to realize the grinding operation on the outside of the axle bush. And the setting of the abutting unit can make the grinding belt (13) always fit on the outside of the axle bush when grinding the axle bush.

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