A polishing machine tool for the swing arm bracket of an excavator

Abstract

The present invention relates to the technical field of rocker arm bracket processing, and specifically relates to a polishing machine tool for an excavator rocker arm bracket, which includes a bed and four support legs, and also includes a controller, a clamping mechanism, a polishing mechanism and a processing mechanism. The clamping mechanism includes a driving component, a transverse rotation component and two sliding components. The polishing mechanism includes a polishing wheel, a lead screw slide table, a swing component and an angle adjustment component. The processing mechanism includes a collection box, a traction component, a transmission component, a longitudinal rotation component and four air nozzles. A feeding plate is fixedly arranged at the center of the top of the bed. The driving component, the swing component and the angle adjustment component are all electrically connected to the controller. The polishing machine tool for an excavator rocker arm bracket according to the present invention can polish rocker arm brackets with different lengths and different thicknesses, thereby meeting the polishing requirements of rocker arm brackets with different sizes and improving the practicability of this machine tool.

Description

Technical Field

[0001] The present invention relates to the technical field of rocker arm bracket processing, and particularly relates to a polishing machine tool for an excavator rocker arm bracket. Background Art

[0002] On an excavator, in order to make the bucket perform downward digging and upward stretching actions, a rocker arm needs to be provided between the connecting rod connected to the bucket and the boom. The upper and lower ends of the rocker arm are connected to the boom through a rotating shaft and a connecting rod. One end of the rocker arm shaft is fixed to the rocker arm bracket, and the other end is suspended. Since the rocker arm shaft is assembled to the rocker arm bracket in a cantilever form, high requirements are also put forward for the surface roughness of the turntable member of the rocker arm bracket.

[0003] Polishing refers to a processing method that uses mechanical, chemical or electrochemical actions to reduce the surface roughness of a workpiece to obtain a bright and flat surface. It is a finishing process that uses a polishing tool and abrasive particles or other polishing media to process the surface of the workpiece.

[0004] Existing rocker arm bracket polishing equipment has the following deficiencies:

[0005] 1. It is unable to automatically clean the debris generated during polishing during the polishing process. These debris are likely to cover the surface of the bracket, affecting the polishing vision, and at the same time, it is easy to dirty the machine tool, increasing the cleaning burden.

[0006] 2. Each mechanism operates independently, consuming a large amount of electricity, which is not conducive to reducing the polishing cost, and at the same time increases the cost of the equipment. Summary of the Invention

[0007] The purpose of the present invention is to provide a polishing machine tool for an excavator rocker arm bracket.

[0008] To achieve this purpose, the present invention adopts the following technical solutions:

[0009] Provide a polishing machine tool for an excavator rocker arm bracket, including a bed and four support legs,

[0010] It further includes a controller, a clamping mechanism, a polishing mechanism and a processing mechanism,

[0011] The clamping mechanism is arranged on the top of the bed to fix the bracket. The clamping mechanism includes a driving component, a lateral rotation component and two sliding components,

[0012] The polishing mechanism is arranged on the top of the bed to polish the bracket. The polishing mechanism includes a polishing wheel, a lead screw slide, a swinging component and an angle adjustment component. The lead screw slide is fixedly arranged on the top of the bed. There is a slide plate on the lead screw slide. The swinging component is arranged on the top of the slide plate. The angle adjustment component is arranged on the swinging component. The polishing wheel is fixedly arranged on the angle adjustment component,

[0013] The processing mechanism is arranged at the top of the bed table. The processing mechanism includes a collection box, a traction assembly, a transmission assembly, a longitudinal rotation assembly, and four air nozzles. A feeding plate is fixedly arranged at the center of the top of the bed table. The four air nozzles are symmetrically arranged at the top of the bed table. The collection box is arranged on the side wall of the bed table. The longitudinal rotation assembly is arranged on the transmission assembly. The traction assembly is arranged between the swing assembly and the transmission assembly. The drive assembly, the swing assembly, and the angle adjustment assembly are all electrically connected to the controller.

[0014] Further, the drive assembly includes an electric push rod, a first gear, and a first rack. An installation groove is arranged inside the bed table. A dust-proof plate is fixedly arranged at the open end of the installation groove. A guide rail is fixedly arranged inside the installation groove. The first rack is slidably arranged inside the guide rail. A rotating shaft is inserted inside the installation groove. The first gear is fixedly arranged on the outer wall of the rotating shaft. The first gear and the first rack are meshed and connected. The electric push rod is fixedly arranged inside the installation groove. Its output end passes through the guide rail and is fixedly connected to one end of the first rack. The electric push rod is electrically connected to the controller.

[0015] Further, the transverse rotation assembly includes a turntable and two connecting rods. The turntable is fixedly arranged at the top of the rotating shaft. The two connecting rods are both hinged at the top of the turntable.

[0016] Further, each sliding assembly includes a slider, a vertical rod, a horizontal rod, a screw rod, and a pressing block. The slider is slidably arranged on the top of the bed table. The bottom of the slider is hinged to one end of one of the connecting rods away from the turntable. The vertical rod is fixedly arranged on the top of the slider. A sliding sleeve is sleeved on the outer wall of the vertical rod. The horizontal rod is fixedly arranged on the inner wall of the sliding sleeve. The screw rod is threadedly connected to one end of the horizontal rod away from the sliding sleeve. The pressing block is fixedly arranged at the bottom of the screw rod. A knob is fixedly arranged at the top of the screw rod. A pressing bolt is threadedly connected to the outer wall of the sliding sleeve. The end of the pressing bolt abuts against the outer wall of the vertical rod.

[0017] Further, a conical indicating rod is fixedly arranged at the top of each sliding sleeve. Two scales are symmetrically arranged at the top of the bed table. The end of each conical indicating rod faces one of the scales.

[0018] Further, the swing assembly includes a servo motor, a turning frame, and two swing rods. The turning frame is hinged at the top of the sliding plate. Two hinge shafts are arranged on the top of the sliding plate. Each swing rod is fixedly arranged on one of the hinge shafts. Two insertion rods are fixedly arranged on the outer walls on both sides of the turning frame. An avoidance groove for the insertion rod to slide is arranged at one end of each swing rod away from the sliding plate. The servo motor is fixedly arranged on the top of the sliding plate. Its output end is fixedly connected to one of the hinge shafts. The servo motor is electrically connected to the controller.

[0019] Further, the angle adjustment assembly includes a stepper motor, a mounting block, and a folding plate. The stepper motor is inserted into the top of the flipping frame. The mounting block is fixedly arranged on its output end. The folding plate is fixedly arranged on the outer wall of the mounting block. A micro motor is inserted into the outer wall of the folding plate, and its output end is fixedly connected to the polishing wheel. Both the stepper motor and the micro motor are electrically connected to the controller.

[0020] Further, the traction assembly includes a pull rope, a pull rod, a second rack, and a return spring. A vertical plate is fixedly arranged on the top of the bed table. A slide rail is fixedly arranged on the outer wall of the vertical plate. The second rack is slidably arranged inside the slide rail. The pull rod is fixedly arranged on one side wall of the flipping frame. The pull rope is fixedly arranged between the bottom of the pull rod and the top of the second rack. The pull rope passes through the slide rail. A limiting rod is fixedly arranged inside the installation groove. The return spring is fixedly arranged between the bottom of the second rack and the top of the limiting rod. Two guide wheels are arranged on the top of the vertical plate. The pull rope passes between the two guide wheels.

[0021] Further, the transmission assembly includes a rotating rod, a second gear, and a third gear. The second gear is rotatably arranged on the outer wall of the vertical plate. The rotating rod is rotatably arranged on the top of the bed table. The third gear is fixedly arranged at one end of the rotating rod. The second gear, the third gear, and the second rack are sequentially meshed, and the second gear is larger than the third gear.

[0022] Further, the longitudinal rotation assembly includes a driving wheel, a driven wheel, a belt, and a fan. The driving wheel is fixedly arranged at the other end of the rotating rod. A circular housing is fixedly arranged on the inner top of the installation groove. The fan is rotatably arranged inside the circular housing through a hinge rod. The driven wheel is fixedly arranged on the outer wall of the hinge rod. The belt is sleeved between the driving wheel and the driven wheel, and the driving wheel is larger than the driven wheel. A feeding pipe is obliquely arranged at one end of the circular housing close to the collecting box, and the bottom end of the feeding pipe faces the top end of the collecting box. A U-shaped pipe is fixedly arranged on the inner top of the installation groove. The bottom of each air nozzle is communicated with the U-shaped pipe through a conveying pipe. A communicating pipe is fixedly arranged between the end of the U-shaped pipe close to the circular housing and the circular housing.

[0023] Advantages of the present invention:

[0024] 1. By designing the clamping mechanism, namely the driving assembly, the transverse rotation assembly, and the two sliding assemblies, the present invention can polish rocker brackets with different lengths and different thicknesses, thereby meeting the polishing requirements of rocker brackets of different sizes and improving the practicability of this machine tool.

[0025] 2. By fixedly designing a conical indicating rod at the top of each sliding sleeve, and symmetrically designing two scale rulers on the top of the bed table, and the end of each conical indicating rod faces one scale ruler. When adjusting the lifting stroke of each sliding sleeve, the conical indicating rod faces the scale ruler to ensure that the height adjustment of the two pressing blocks is consistent without deviation, which is beneficial to improving the pressing effect, preventing errors, improving the clamping accuracy, and is beneficial to improving the polishing efficiency.

[0026] 3. The present invention can realize free adjustment of the lateral and longitudinal angles of the polishing wheel by designing a screw slide, a flip assembly and an angle adjustment assembly, thereby achieving a universal polishing effect, thereby meeting the polishing requirements of any position on the surface of the rocker arm bracket and improving the flexibility of the machine tool.

[0027] 4. The present invention designs a traction component, namely a pull rope, a pull rod, a second rack and a reset spring. When the polishing wheel rotates to adjust the polishing angle, it can drive four air nozzles to blow or suck air, so that the polishing mechanism and the processing mechanism operate in conjunction, rather than the two mechanisms operating independently. Compared with the prior art, the number of driving electrical appliances used is greatly reduced, the power consumption of the machine tool is reduced, which is beneficial to saving polishing costs. At the same time, the overall structure of the machine tool can be reduced to reduce manufacturing costs.

[0028] 5. The present invention designs a traction assembly, namely a pull rope, a pull rod, a second rack and a reset spring, so that air can be blown to the rocker bracket on the top of the discharge plate before polishing to blow away the adhered impurities on its surface, thereby preventing the bracket from being scratched during polishing and improving the polishing quality. At the same time, it can also prevent the adhered impurities from damaging the polishing wheel, thereby protecting the polishing wheel and extending its service life. Each time the flip frame rotates clockwise, the reset spring changes from the pull rope state to the contracted state, thereby driving the second rack to descend, thereby driving the third gear and the rotating rod to rotate clockwise, and then driving the fan to rotate clockwise through the belt, and the polished product produced during polishing is blown away by the four air nozzles. The raw debris is absorbed into the inside of the circular cover. Since the circular cover and the feeding tube are fixedly connected, the bottom end of the feeding tube faces the top of the collection box, and then slides into the inside of the collection box through the feeding tube for collection. After melting, it can be used again as a raw material for manufacturing the rocker arm bracket, which is convenient for secondary utilization and helps to save the manufacturing cost of the rocker arm bracket. At the same time, it can improve the surface cleanliness of the bracket after polishing, improve the polishing quality, and prevent the debris from accumulating on the top of the machine tool to cause dirt or accumulating on the surface of the bracket to cover the polishing field of view during the polishing process, which helps to improve the polishing efficiency and reduce the cleaning burden of the machine tool, thereby improving its maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings in the embodiment of the present invention are briefly introduced below.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0032] Figure 3 for Figure 1 The enlarged schematic diagram of point B in FIG.

[0033] Figure 4 Cross-section of the bed of the present invention Figure 1 ;

[0034] Figure 5 is Figure 4 The enlarged schematic diagram at position C in

[0035] Figure 6 Cross-section of the bed of the present invention Figure 2 ;

[0036] Figure 7 is Figure 6 The enlarged schematic diagram at position D in

[0037] Figure 8 is Figure 6 The enlarged schematic diagram at position E in

[0038] In the figure: Bed 1, drive assembly 2, lateral rotation assembly 3, sliding assembly 4, polishing wheel 5, lead screw slider 6, swing assembly 7, angle adjustment assembly 8, collection box 10, traction assembly 11, transmission assembly 12, longitudinal rotation assembly 13, air nozzle 14, feeding plate 15, electric push rod 16, first gear 17, first rack 18, turntable 19, connecting rod 20, slider 21, vertical rod 22, horizontal rod 23, screw 24, pressing block 25, sliding sleeve 26, knob 27, compression bolt 28, conical indicating rod 29, scale 30, servo motor 31, flipping frame 32, swing rod 33, inserting rod 34, stepping motor 35, mounting block 36, folding plate 37, micro motor 38, pulling rope 39, pulling rod 40, second rack 41, return spring 42, limiting rod 43, limiting rod 43, rotating rod 45, second gear 46, third gear 47, driving wheel 48, driven wheel 49, belt 50, fan 51, circular housing 52, feeding pipe 53, U-shaped pipe 54, conveying pipe 55, connecting pipe 56. Detailed implementation manners

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0040] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings are omitted, enlarged or reduced, and do not represent the dimensions of the actual products.

[0041] A polishing machine tool for an excavator boom bracket includes a bed 1 and four support legs,

[0042] and also includes a controller, a clamping mechanism, a polishing mechanism and a processing mechanism,

[0043] The clamping mechanism is arranged on the top of the bed 1 to fix the bracket. The clamping mechanism includes a driving component 2, a transverse rotation component 3 and two sliding components 4.

[0044] The polishing mechanism is arranged on the top of the bed 1 to polish the bracket. The polishing mechanism includes a polishing wheel 5, a lead screw slide 6, a swing component 7 and an angle adjustment component 8. The lead screw slide 6 is fixedly arranged on the top of the bed 1. A slide plate 9 is arranged on the lead screw slide 6. The swing component 7 is arranged on the top of the slide plate 9. The angle adjustment component 8 is arranged on the swing component 7. The polishing wheel 5 is fixedly arranged on the angle adjustment component 8.

[0045] The processing mechanism is arranged on the top of the bed 1. The processing mechanism includes a collection box 10, a traction component 11, a transmission component 12, a longitudinal rotation component 13 and four air nozzles 14. A feeding plate 15 is fixedly arranged at the center of the top of the bed 1. The four air nozzles 14 are symmetrically arranged on the top of the bed 1. The collection box 10 is arranged on the side wall of the bed 1. The longitudinal rotation component 13 is arranged on the transmission component 12. The traction component 11 is arranged between the swing component 7 and the transmission component 12. The driving component 2, the swing component 7 and the angle adjustment component 8 are all electrically connected to the controller.

[0046] Refer to Figure 4 As shown, the driving component 2 includes an electric push rod 16, a first gear 17 and a first rack 18. An installation groove is arranged inside the bed 1. A dust-proof plate is fixedly arranged at the open end of the installation groove. A guide rail is fixedly arranged inside the installation groove. The first rack 18 is slidably arranged inside the guide rail. A rotating shaft is inserted inside the installation groove. The first gear 17 is fixedly arranged on the outer wall of the rotating shaft. The first gear 17 and the first rack 18 are meshed and connected. The electric push rod 16 is fixedly arranged inside the installation groove. Its output end passes through the guide rail and is fixedly connected to one end of the first rack 18. The electric push rod 16 is electrically connected to the controller. When encountering a rocker bracket with a small length, first place the rocker bracket on the top of the feeding plate 15, and then start the electric push rod 16, so that its output end drives the first rack 18 to extend towards the end away from the electric push rod 16. Since the first rack 18 is fixedly connected to the first gear 17 and the first gear 17 is fixedly connected to the rotating shaft, the rotating shaft is driven to rotate counterclockwise.

[0047] Refer to Figure 4As shown in the figure, the horizontal rotation assembly 3 includes a turntable 19 and two connecting rods 20. The turntable 19 is fixedly arranged at the top of the rotating shaft. The two connecting rods 20 are both hinged to the top of the turntable 19. When the rotating shaft rotates counterclockwise, since each slider 21 and the turntable 19 are respectively hinged to both ends of a connecting rod 20, the slider 21 is slidably connected to the bed 1, and the pressing block 25 is arranged on the top of the slider 21, thus driving the two sliders 21 and the two pressing blocks 25 thereon to approach each other. Then rotate the two knobs 27 to drive the two screw rods 24 and the two pressing blocks 25 at their bottoms to descend, and press the two ends of the top of the rocker arm bracket with a smaller length to achieve the fixation of the bracket.

[0048] Referring to Figure 2 As shown in the figure, each sliding assembly 4 includes a slider 21, a vertical rod 22, a horizontal rod 23, a screw rod 24 and a pressing block 25. The slider 21 is slidably arranged on the top of the bed 1. The bottom of the slider 21 is hinged to one end of a connecting rod 20 away from the turntable 19. The vertical rod 22 is fixedly arranged on the top of the slider 21. A sliding sleeve 26 is sleeved on the outer wall of the vertical rod 22. The horizontal rod 23 is fixedly arranged on the inner wall of the sliding sleeve 26. The screw rod 24 is threadedly connected to one end of the horizontal rod 23 away from the sliding sleeve 26. The pressing block 25 is fixedly arranged at the bottom of the screw rod 24. A knob 27 is fixedly arranged at the top of the screw rod 24. A pressing bolt 28 is threadedly connected to the outer wall of the sliding sleeve 26, and the end of the pressing bolt 28 abuts against the outer wall of the vertical rod 22. During polishing, first place the rocker arm bracket on the top of the feeding plate 15, and then manually rotate the knob 27 to drive the screw rod 24 and the pressing block 25 at its bottom to descend, and press the two ends of the top of the rocker arm bracket, and cooperate with the feeding plate 15 to achieve its fixation. Since the horizontal rod 23 is fixedly connected to the sliding sleeve 26 and the pressing bolt 28 is in threaded cooperation with the sliding sleeve 26, the height of the screw rod 24 on the horizontal rod 23 and the pressing block 25 at its bottom can be adjusted to meet the pressing and fixation of rocker arm brackets with different thicknesses.

[0049] Referring to Figure 2 As shown in the figure, a conical indicating rod 29 is fixedly arranged at the top of each sliding sleeve 26. Two scales 30 are symmetrically arranged on the top of the bed 1. The end of each conical indicating rod 29 faces one scale 30. When adjusting the lifting stroke of each sliding sleeve 26, the conical indicating rod 29 faces the scale 30 to ensure that the height adjustment of the two pressing blocks 25 is consistent without deviation, which is beneficial to improving the pressing effect, preventing errors and improving the accuracy of clamping.

[0050] Referring to Figure 7As shown, the swing assembly 7 includes a servo motor 31, a turnover frame 32 and two swing rods 33. The turnover frame 32 is hinged to the top of the slide plate 9. There are two hinge shafts provided on the top of the slide plate 9, and each swing rod 33 is fixedly arranged on one hinge shaft. Two insertion rods 34 are fixedly arranged on the outer walls on both sides of the turnover frame 32. An avoidance groove for the insertion rod 34 to slide is provided at one end of each swing rod 33 away from the slide plate 9. The servo motor 31 is fixedly arranged on the top of the slide plate 9, and its output end is fixedly connected to one of the hinge shafts. The servo motor 31 is electrically connected to the controller. After the rocker arm bracket is fixed, the servo motor 31 is started through the controller, so that its output end rotates counterclockwise. Since its output end is fixedly connected to one of the hinge shafts, each swing rod 33 is fixedly connected to one hinge shaft, each insertion rod 34 is fixedly connected to the side wall of the turnover frame 32, and each insertion rod 34 is inserted into one end of a swing rod 33 away from the hinge shaft. In addition, the turnover frame 32 is hinged to the top of the slide plate 9. Therefore, when the swing rod 33 rotates counterclockwise, the contact force generated by the avoidance groove on the insertion rod 34 drives the turnover frame 32 and the polishing wheel 5 on its top to rotate counterclockwise until they are attached to the surface of the rocker arm bracket.

[0051] Referring to Figure 3 As shown, the angle adjustment assembly 8 includes a stepper motor 35, a mounting block 36 and a folding plate 37. The stepper motor 35 is inserted into the top of the turnover frame 32. The mounting block 36 is fixedly arranged on its output end. The folding plate 37 is fixedly arranged on the outer wall of the mounting block 36. A micro motor 38 is inserted into the outer wall of the folding plate 37, and its output end is fixedly connected to the polishing wheel 5. The stepper motor 35 and the micro motor 38 are both electrically connected to the controller. When the polishing wheel 5 rotates counterclockwise until it is attached to the surface of the rocker arm bracket, the micro motor 38 is started through the controller. Since its output end is fixedly connected to the polishing wheel 5, the polishing wheel 5 is driven to rotate to polish the rocker arm bracket. Since the output end of the stepper motor 35 is fixedly connected to the mounting block 36 and the polishing wheel 5 is fixedly connected to the mounting block 36, the polishing wheel 5 is driven to rotate left and right to meet the polishing requirements of any position on the surface of one end of the rocker arm bracket. The lead screw slide table 6 drives the polishing wheel 5 to slide horizontally until one end of the rocker arm bracket is completely polished. Then, the two pressing blocks 25 are loosened, the rocker arm bracket is turned over, and the above steps are repeated to polish the other end.

[0052] Referring to Figure 7As shown, the traction assembly 11 includes a pull rope 39, a pull rod 40, a second rack 41 and a return spring 42. A vertical plate is fixedly provided at the top of the bed table 1. A slide rail is fixedly provided on the outer wall of the vertical plate. The second rack 41 is slidably arranged inside the slide rail. The pull rod 40 is fixedly arranged on one side wall of the flipping frame 32. The pull rope 39 is fixedly arranged between the bottom of the pull rod 40 and the top of the second rack 41. The pull rope 39 passes through the slide rail. A limiting rod 43 is fixedly arranged inside the installation groove. The return spring 42 is fixedly arranged between the bottom of the second rack 41 and the top of the limiting rod 43. Two guide wheels 44 are provided at the top of the vertical plate. The pull rope 39 passes between the two guide wheels 44. While the polishing wheel 5 rotates counterclockwise and approaches the rocker arm bracket, since the pull rope 39 is fixedly connected to the top of the flipping frame 32 through the pull rod 40, and the other end of the pull rope 39 is fixedly connected to the top of the second rack 41, and the second rack 41 is slidably connected to the slide rail, it drives the second rack 41 to slide upward inside the slide rail. Since the bottom of the second rack 41 and the top of the limiting rod 43 are respectively fixedly connected to both ends of the return spring 42, when the second rack 41 slides upward, it drives the return spring 42 to change from a contracted state to a stretched state.

[0053] Refer to Figure 7 As shown, the transmission assembly 12 includes a rotating rod 45, a second gear 46 and a third gear 47. The second gear 46 is rotatably arranged on the outer wall of the vertical plate. The rotating rod 45 is rotatably arranged on the top of the bed table 1. The third gear 47 is fixedly arranged at one end of the rotating rod 45. The second gear 46, the third gear 47 and the second rack 41 are sequentially meshed. And the second gear 46 is larger than the third gear 47. When the second rack 41 slides upward, since the rotating rod 45 is rotatably connected to the bed table 1, the second gear 46 is rotatably connected to the vertical plate, and the third gear 47 is fixedly connected to one end of the rotating rod 45, and since the second gear 46, the third gear 47 and the second rack 41 are sequentially meshed, it drives the rotating rod 45 to rotate counterclockwise.

[0054] Refer to Figure 8As shown in the figure, the longitudinal rotation assembly 13 includes a driving wheel 48, a driven wheel 49, a belt 50 and a fan 51. The driving wheel 48 is fixedly arranged at the other end of the rotating rod 45. The inner top of the installation groove is fixedly provided with a circular housing 52. The fan 51 is rotatably arranged inside the circular housing 52 through a hinge rod. The driven wheel 49 is fixedly arranged on the outer wall of the hinge rod. The belt 50 is sleeved between the driving wheel 48 and the driven wheel 49, and the driving wheel 48 is larger than the driven wheel 49. One end of the circular housing 52 close to the collection box 10 is inclined with a feeding pipe 53. The bottom end of the feeding pipe 53 faces the top end of the collection box 10. The inner top of the installation groove is fixedly provided with a U-shaped pipe 54. The bottom of each air nozzle 14 is communicated with the U-shaped pipe 54 through a conveying pipe 55. A communicating pipe 56 is fixedly arranged between one end of the U-shaped pipe 54 close to the circular housing 52 and the circular housing 52. When the rotating rod 45 rotates counterclockwise, since the driving wheel 48 is connected to the other end of the rotating rod 45, the driven wheel 49 is fixedly connected to the hinge rod, and the fan 51 is rotatably connected to the circular housing 52 through the hinge rod, the fan 51 is driven to rotate counterclockwise. Also, since the four air nozzles 14 are communicated with the U-shaped pipe 54 through the four conveying pipes 55, the U-shaped pipe 54 is communicated with the circular housing 52 through the communicating pipe 56, and in addition, the four air nozzles 14 are designed around the feeding plate 15, it is possible to blow air on the rocker arm bracket on the top of the feeding plate 15 before polishing, blow off the adhered impurities on its surface, prevent scratching the bracket during polishing, improve the polishing quality, and at the same time prevent the adhered impurities from damaging the polishing wheel 5, playing a role in protecting the polishing wheel 5, which is beneficial to extending its service life. And when the flipping frame 32 rotates clockwise each time, the reset spring 42 changes from the state of being pulled by the rope 39 to the contracted state, thereby driving the second rack 41 to descend, thereby driving the third gear 47 and the rotating rod 45 to rotate clockwise, and then driving the fan 51 to rotate clockwise through the belt 50. The debris generated during polishing is adsorbed into the circular housing 52 through the four air nozzles 14. Since the circular housing 52 is fixedly connected to the feeding pipe 53, the bottom end of the feeding pipe 53 faces the top end of the collection box 10, and then it slides down into the collection box 10 through the feeding pipe 53 for collection. After melting, it can be used again as the raw material for manufacturing the rocker arm bracket, which is convenient for realizing secondary utilization, beneficial to saving the manufacturing cost of the rocker arm bracket, and at the same time can improve the surface cleanliness of the polished bracket, improve the polishing quality, and prevent debris from accumulating on the top of the machine tool to cause dirt during the polishing process, or accumulating on the surface of the bracket to cover the grinding vision, which is beneficial to improving the grinding efficiency and reducing the cleaning burden of this machine tool, and improving its maintenance efficiency.

[0055] Working principle of the present invention: During polishing, first place the rocker arm bracket on the top of the loading plate 15, and then manually rotate the knob 27 to drive the screw rod 24 and the pressing block 25 at its bottom to descend, pressing and clamping both ends of the top of the rocker arm bracket, and cooperating with the loading plate 15 to fix it. Since the cross bar 23 is fixedly connected to the sliding sleeve 26, and the pressing bolt 28 is in threaded cooperation with the sliding sleeve 26, the height of the screw rod 24 on the cross bar 23 and the pressing block 25 at its bottom can be adjusted to meet the pressing and fixing requirements for rocker arm brackets of different thicknesses.

[0056] When encountering a rocker arm bracket with a smaller length, first place the rocker arm bracket on the top of the loading plate 15, and then start the electric push rod 16 to drive its output end to extend the first rack 18 towards the end away from the electric push rod 16. Since the first rack 18 is fixedly connected to the first gear 17, and the first gear 17 is fixedly connected to the rotating shaft, the rotating shaft is driven to rotate counterclockwise.

[0057] When the rotating shaft rotates counterclockwise, since each slider 21 and the turntable 19 are respectively hinged to both ends of a connecting rod 20, the slider 21 is slidably connected to the bed 1, and the pressing block 25 is arranged on the top of the slider 21, the two sliders 21 and the two pressing blocks 25 thereon are driven to approach each other. Then rotate the two knobs 27 to drive the two screw rods 24 and the two pressing blocks 25 at their bottoms to descend, pressing and clamping both ends of the top of the rocker arm bracket with a smaller length to fix the bracket.

[0058] When adjusting the lifting stroke of each sliding sleeve 26, the conical indicating rod 29 faces the scale 30 to ensure that the height adjustment of the two pressing blocks 25 is consistent without deviation, which is beneficial to improving the pressing effect, preventing errors, and enhancing the accuracy of clamping.

[0059] After the rocker arm bracket is fixed, start the servo motor 31 through the controller to drive its output end to rotate counterclockwise. Since its output end is fixedly connected to one of the hinge shafts, each swing rod 33 is fixedly connected to a hinge shaft, each insertion rod 34 is fixedly connected to the side wall of the turning frame 32, and each insertion rod 34 is inserted into the end of a swing rod 33 away from the hinge shaft. In addition, the turning frame 32 is hinged to the top of the sliding plate 9. Therefore, when the swing rod 33 rotates counterclockwise, the turning frame 32 and the polishing wheel 5 on its top are driven to rotate counterclockwise until they are in contact with the surface of the rocker arm bracket.

[0060] When the polishing wheel 5 rotates counterclockwise until it fits against the surface of the rocker arm bracket, the micro-motor 38 is started by the controller. Since its output end is fixedly connected to the polishing wheel 5, the polishing wheel 5 is driven to rotate to polish the rocker arm bracket. Since the output end of the stepping motor 35 is fixedly connected to the mounting block 36 and the polishing wheel 5 is fixedly connected to the mounting block 36, the polishing wheel 5 is driven to rotate left and right to meet the polishing requirements for any position on the surface of one end of the rocker arm bracket. The lead screw slide 6 drives the polishing wheel 5 to slide horizontally until one end of the rocker arm bracket is completely polished. Then, the two pressing blocks 25 are loosened, the rocker arm bracket is flipped over, and the above steps are repeated to polish the other end.

[0061] While the polishing wheel 5 rotates counterclockwise and approaches the rocker arm bracket, since the pull rope 39 is fixedly connected to the top of the turnover frame 32 through the pull rod 40, the other end of the pull rope 39 is fixedly connected to the top of the second rack 41, and the second rack 41 is slidably connected to the slide rail, the second rack 41 is driven to slide upward inside the slide rail. Since the bottom of the second rack 41 and the top of the limiting rod 43 are respectively fixedly connected to both ends of the return spring 42, when the second rack 41 slides upward, the return spring 42 is driven to change from the contracted state to the stretched state.

[0062] When the second rack 41 slides upward, since the rotating rod 45 is rotatably connected to the bed 1, the second gear 46 is rotatably connected to the vertical plate, the third gear 47 is fixedly connected to one end of the rotating rod 45, and since the second gear 46, the third gear 47 and the second rack 41 are sequentially meshed, the rotating rod 45 is driven to rotate counterclockwise.

[0063] When the rotating rod 45 rotates counterclockwise, since the driving wheel 48 is connected to the other end of the rotating rod 45, the driven wheel 49 is fixedly connected to the articulated rod, and the fan 51 is rotatably connected to the circular housing 52 through the articulated rod, the fan 51 is driven to rotate counterclockwise. Also, since the four air nozzles 14 are connected to the U-shaped pipe 54 through the four conveying pipes 55, and the U-shaped pipe 54 is connected to the circular housing 52 through the connecting pipe 56, and in addition, the four air nozzles 14 are designed around the feeding plate 15, it is possible to blow air on the rocker arm bracket on the top of the feeding plate 15 before polishing, blow away the adhered impurities on its surface, prevent scratching the bracket during polishing, improve the polishing quality, and at the same time, it can also prevent the adhered impurities from damaging the polishing wheel 5, play a role in protecting the polishing wheel 5, and is beneficial to extending its service life. When the flipping frame 32 rotates clockwise each time, the return spring 42 changes from the state of being pulled by the rope 39 to the contracted state, thereby driving the second rack 41 to descend, driving the third gear 47 and the rotating rod 45 to rotate clockwise, and then driving the fan 51 to rotate clockwise through the belt 50. The debris generated during polishing is adsorbed into the circular housing 52 through the four air nozzles 14. Since the circular housing 52 is fixedly connected to the feeding pipe 53, the bottom end of the feeding pipe 53 faces the top end of the collection box 10, and then it slides down through the feeding pipe 53 into the collection box 10 for collection. After melting, it can be used again as the raw material for manufacturing the rocker arm bracket, which is convenient for realizing secondary utilization, beneficial to saving the manufacturing cost of the rocker arm bracket, and at the same time can improve the surface cleanliness of the polished bracket, improve the polishing quality, and can prevent the debris from accumulating on the top of the machine tool to cause dirt, or accumulating on the surface of the bracket to cover the grinding vision, which is beneficial to improving the grinding efficiency and reducing the cleaning burden of this machine tool, and improving its maintenance efficiency.

Claims

1. A polishing machine tool for the swing arm bracket of an excavator, comprising a bed (1) and four support legs, characterized in that: It further includes a controller, a clamping mechanism, a polishing mechanism and a processing mechanism. The clamping mechanism is arranged on the top of the bed (1) to fix the bracket. The clamping mechanism includes a driving component (2), a lateral rotation component (3) and two sliding components (4). The polishing mechanism is arranged on the top of the bed (1) to polish the bracket. The polishing mechanism includes a polishing wheel (5), a lead screw slide (6), a swing component (7) and an angle adjustment component (8). The lead screw slide (6) is fixedly arranged on the top of the bed (1). A slide plate (9) is arranged on the lead screw slide (6). The swing component (7) is arranged on the top of the slide plate (9). The angle adjustment component (8) is arranged on the swing component (7). The polishing wheel (5) is fixedly arranged on the angle adjustment component (8). The processing mechanism is arranged on the top of the bed (1). The processing mechanism includes a collection box (10), a traction component (11), a transmission component (12), a longitudinal rotation component (13) and four air nozzles (14). A feeding plate (15) is fixedly arranged at the center of the top of the bed (1). The four air nozzles (14) are symmetrically arranged on the top of the bed (1). The collection box (10) is arranged on the side wall of the bed (1). The longitudinal rotation component (13) is arranged on the transmission component (12). The traction component (11) is arranged between the swing component (7) and the transmission component (12). The driving component (2), the swing component (7) and the angle adjustment component (8) are all electrically connected to the controller. The swing component (7) includes a servo motor (31), a turning frame (32) and two swing rods (33). The turning frame (32) is hinged to the top of the slide plate (9). Two hinge shafts are arranged on the top of the slide plate (9). Each swing rod (33) is fixedly arranged on a hinge shaft. Two insertion rods (34) are fixedly arranged on the outer walls of both sides of the turning frame (32). An avoidance groove for the insertion rod (34) to slide is arranged at one end of each swing rod (33) away from the slide plate (9). The servo motor (31) is fixedly arranged on the top of the slide plate (9), and its output end is fixedly connected to one of the hinge shafts. The servo motor (31) is electrically connected to the controller. The traction component (11) includes a pull rope (39), a pull rod (40), a second rack (41) and a return spring (42). A vertical plate is fixedly arranged on the top of the bed (1). A slide rail is fixedly arranged on the outer wall of the vertical plate. The second rack (41) is slidably arranged inside the slide rail. The pull rod (40) is fixedly arranged on one side wall of the turning frame (32). The pull rope (39) is fixedly arranged between the bottom of the pull rod (40) and the top of the second rack (41). The pull rope (39) passes through the slide rail. A limiting rod (43) is fixedly arranged inside the installation groove. The return spring (42) is fixedly arranged between the bottom of the second rack (41) and the top of the limiting rod (43). Two guide wheels (44) are arranged on the top of the vertical plate. The pull rope (39) passes between the two guide wheels (44).

2. The polishing machine tool for the swing arm bracket of an excavator according to claim 1, wherein: The driving component (2) includes an electric push rod (16), a first gear (17) and a first rack (18). An installation groove is provided inside the bed (1). A dust-proof plate is fixedly provided at the open end of the installation groove. A guide rail is fixedly provided inside the installation groove. The first rack (18) is slidably arranged inside the guide rail. A rotating shaft is inserted inside the installation groove. The first gear (17) is fixedly arranged on the outer wall of the rotating shaft. The first gear (17) and the first rack (18) are meshed and connected. The electric push rod (16) is fixedly arranged inside the installation groove, and its output end passes through the guide rail and is fixedly connected to one end of the first rack (18). The electric push rod (16) is electrically connected to the controller.

3. A polishing machine tool for an excavator swing arm bracket according to claim 2, characterized in that: The lateral rotation component (3) includes a turntable (19) and two connecting rods (20). The turntable (19) is fixedly arranged on the top of the rotating shaft. The two connecting rods (20) are both hinged on the top of the turntable (19).

4. A polishing machine tool for an excavator swing arm bracket according to claim 3, characterized in that: Each sliding component (4) includes a slider (21), a vertical rod (22), a horizontal rod (23), a screw rod (24) and a pressing block (25). The slider (21) is slidably arranged on the top of the bed (1). The bottom of the slider (21) is hinged to one end of one of the connecting rods (20) away from the turntable (19). The vertical rod (22) is fixedly arranged on the top of the slider (21). A sliding sleeve (26) is sleeved on the outer wall of the vertical rod (22). The horizontal rod (23) is fixedly arranged on the inner wall of the sliding sleeve (26). The screw rod (24) is threadedly connected to one end of the horizontal rod (23) away from the sliding sleeve (26) and the pressing block (25) is fixedly arranged at the bottom of the screw rod (24). A knob (27) is fixedly arranged at the top of the screw rod (24). A pressing bolt (28) is threadedly connected to the outer wall of the sliding sleeve (26), and the end of the pressing bolt (28) abuts against the outer wall of the vertical rod (22).

5. A polishing machine tool for an excavator swing arm bracket according to claim 4, characterized in that: A conical indicating rod (29) is fixedly arranged on the top of each sliding sleeve (26). Two scales (30) are symmetrically arranged on the top of the bed (1). The end of each conical indicating rod (29) faces one of the scales (30).

6. A polishing machine tool for an excavator swing arm bracket according to claim 5, characterized in that: The angle adjustment component (8) includes a stepper motor (35), a mounting block (36) and a folding plate (37). The stepper motor (35) is inserted into the top of the flipping frame (32). The mounting block (36) is fixedly arranged on its output end. The folding plate (37) is fixedly arranged on the outer wall of the mounting block (36). A micro motor (38) is inserted into the outer wall of the folding plate (37), and its output end is fixedly connected to the polishing wheel (5). The stepper motor (35) and the micro motor (38) are both electrically connected to the controller.

7. A polishing machine tool for an excavator swing arm bracket according to claim 6, characterized in that: The transmission component (12) includes a rotating rod (45), a second gear (46) and a third gear (47). The second gear (46) is rotatably arranged on the outer wall of the vertical plate. The rotating rod (45) is rotatably arranged on the top of the bed (1). The third gear (47) is fixedly arranged at one end of the rotating rod (45). The second gear (46), the third gear (47) and the second rack (41) are sequentially meshed and connected, and the second gear (46) is larger than the third gear (47).

8. A polishing machine tool for an excavator swing arm bracket according to claim 7, characterized in that: The longitudinal rotation assembly (13) includes a driving wheel (48), a driven wheel (49), a belt (50) and a fan (51). The driving wheel (48) is fixedly arranged at the other end of the rotating rod (45). The inner top of the installation groove is fixedly provided with a circular housing (52). The fan (51) is rotatably arranged inside the circular housing (52) through a hinge rod. The driven wheel (49) is fixedly arranged on the outer wall of the hinge rod. The belt (50) is sleeved between the driving wheel (48) and the driven wheel (49), and the driving wheel (48) is larger than the driven wheel (49). One end of the circular housing (52) close to the collection box (10) is inclined with a feeding pipe (53). The bottom end of the feeding pipe (53) faces the top end of the collection box (10). The inner top of the installation groove is fixedly provided with a U-shaped pipe (54). The bottom of each air nozzle (14) is communicated with the U-shaped pipe (54) through a conveying pipe (55). A communicating pipe (56) is fixedly arranged between one end of the U-shaped pipe (54) close to the circular housing (52) and the circular housing (52).

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