Improved Process for Boring and Milling Inner Holes of Bearing Bushings

Abstract

The present invention relates to an improved process for boring and milling inner holes of bearings, which is based on a bearing processing system, comprising a frame assembly, and an automatic bearing processing and transmission line arranged on the frame assembly and used for transmitting bearing parts (1) between processes, a bearing milling positioning lip device connected in sequence with the processes of the automatic bearing processing and transmission line, a bearing inner hole milling device, a bearing inner oil line boring device, and a bearing oil line inner hole repairing machine (12); the present invention has a reasonable design, a compact structure and is easy to use.

Description

Technical Field

[0001] The invention relates to a bearing bush processing system and process, and in particular to an improved process for boring and milling inner holes of bearing bushes. Background Art

[0002] The bearing shell is the part where the sliding bearing contacts the journal. It is a semi-cylindrical surface in the shape of a tile and is very smooth. It is generally made of wear-resistant materials such as bronze and anti-friction alloy. In special cases, it can be made of wood, engineering plastics or rubber.

[0003] Thick-walled bearings can be cast. To improve friction performance, a layer of bearing alloy (called bearing lining) can be poured on the inner surface of the bearing. In order to make the bearing alloy and the bearing adhere well, various forms of tenons, grooves or threads are often made on the inner surface of the bearing. Thin-walled bearings can be mass-produced using processes such as continuous rolling of bimetallic plates.

[0004] Powder metallurgy is to mix powdered iron or copper and other basic materials with graphite, and then press and sinter them into a shape. Its pores can store lubricating oil, which is called oil-containing bearing.

[0005] The bearing material is usually soft, and the inner cylindrical surface is not suitable for grinding. It can be processed by boring, diamond boring, scraping or grinding. When grinding, the method of grinding with the shaft diameter should not be used, but a special grinding rod with the same size as the bearing hole should be used. Scraping is mostly used for some bearings, and it is scraped with a wide-blade scraper. When scraping by hand, the scratches should be shallow. For bearings with complex inner surface shapes, special boring methods should be used according to the specific shapes.

[0006] In the bearing processing industry, with the improvement of automation, different equipment such as boring machines and chamfering equipment are often connected by conveyor belts to improve production efficiency. In fact, the existing technology can already transform the front and rear machines into integrated transmission. However, there is such a problem in the processing process. After the front machine such as the boring machine is processed, the bearing is oriented to the left, and when entering the rear machine such as the chamfering equipment, the processing requirement requires the bearing to enter the equipment in a state of facing right. This steering process can only be completed manually at present. Because the production volume of bearings is large, this process greatly increases the workload and reduces production efficiency. CN201320804939.4 A conveying device for automatically steering bearings provides a conveying device, but it cannot meet the needs of automation.

[0007] In the existing bearing oil groove processing process, the bearing oil groove is processed entirely by lathes, which is inefficient, with a production of no more than 1,700 pieces per shift, high labor intensity, manual clamping, and hand-cranked lathe feeding. It is also easy to produce chipping marks or edges and corners, and cannot guarantee the accuracy requirements. Although CN201020289599.2 milling bearing oil groove device provides a processing solution, it cannot meet the processing methods of various oil grooves, has poor versatility, and is high in cost.

[0008] When the punch of the prior art punches the locating lip of the bearing bush, the bearing bush is easily damaged, which easily leads to the breakage of the punch. CN201020289581.2 A milling device before punching the locating lip of the bearing bush, but there is still a defect of low processing accuracy.

[0009] CN201811537434.X Bearing high-precision oil line processing equipment, processing method and assembly method, CN201811536596.1 High-precision unmanned bearing processing method has been greatly improved compared with the traditional process, but there is still high processing cost and room for improvement, so as to improve efficiency, improve precision, upgrade and meet the needs of customers with different engines and diesel engines. Summary of the invention

[0010] The technical problem to be solved by the present invention is generally to provide a bearing processing system and process; the detailed technical problems solved and the beneficial effects achieved are described in detail in the following content and in combination with the content of the specific implementation method. Its sub-case number: 2020113983302 Automobile bearing automatic processing technology; application date: 20190717; parent case number: CN201910643765.X.

[0011] To solve the above problems, the technical solution adopted by the present invention is:

[0012] A bearing processing system also includes a frame assembly, and an automatic bearing processing and transmission line arranged on the frame assembly and used to transmit bearing parts between processes, a bearing milling and positioning lip device that is sequentially connected with the processes of the automatic bearing processing and transmission line, a bearing inner hole milling device, a bearing inner oil line boring device, and a bearing oil line inner hole repairing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the assembly line of the present invention.

[0014] Figure 2 It is a structural schematic diagram of one of the partial assembly lines of the present invention.

[0015] Figure 3 It is a schematic structural diagram of the device for milling inner holes of bearing bushes according to the present invention.

[0016] Figure 4 It is a structural schematic diagram of the second partial assembly line of the present invention.

[0017] Figure 5 It is a structural schematic diagram of the third partial assembly line of the present invention.

[0018] Figure 6 It is a structural schematic diagram of the bearing oil line milling machine of the present invention.

[0019] Figure 7 It is a structural schematic diagram of the inner hole machine of the bearing oil repair line of the present invention.

[0020] Figure 8 It is a structural schematic diagram of the inner hole machine of the bearing oil repair line from another perspective of the present invention.

[0021] Fig. 9 It is a schematic structural diagram of the lip processing device of the present invention.

[0022] Fig.10 It is a structural schematic diagram of the lip processing device of the present invention from another perspective.

[0023] Fig.11 It is a schematic diagram of the hydraulic structure of the bearing oil line milling machine of the present invention.

[0024] Fig.12 It is a circuit control schematic diagram of the bearing oil line milling machine of the present invention.

[0025] Wherein: 1. Bearing shell part; 2. First conveying device; 3. First separating and aligning device; 4. First feeding manipulator; 5. Inner hole boring and milling device; 6. Second conveying device; 7. Spacer lining feeding device; 8. Auxiliary conveying device; 9. Material frame part; 10. Third conveying device; 11. Oil groove milling device; 12. Inner hole machine for bearing shell repair oil line; 13. Lip machining device; 14. First conveyor belt; 15. First indexing toothed dial; 16. First herringbone guide plate; 17. First V-shaped guide frame; 18. First laterally inclined guide channel; 19. First side plate notch; 20. First tail process notch; 21. First side pushing arm; 22. First side telescopic rod; 23. First rear pushing L-shaped rod; 24. First rear pushing C-shaped arc plate; 25. First separating conveyor belt; 26. First aligning positioning fixture; 27. First aligning process inner stop; 28. First aligning positioning step; 29. First radial process groove; 30. First mechanical lifting and rotating base; 31. First telescopic mechanical head; 32. First lifting head; 33. First rotating head; 34. First telescopic finger; 35. First lower positioning inner stop; 36. Boring and milling machine frame; 37. Boring and milling rotating frame; 38. Boring and milling positioning fixture; 39. Boring and milling upper pushing frame; 40. Boring and milling process baffle; 41. Boring and milling positioning center cone sleeve; 42. Boring and milling opening elastic sleeve; 43. Boring and milling cutter bar; 44. Second discharge conveyor belt; 45. Second obliquely indexing and dial gear; 46. Second obliquely side guide channel; 47. Second linearly inclined conveyor belt; 48. Second spiral conveyor belt; 49. Second aggregating conveyor belt; 50. Second direction-changing pushing arm; 51. Second direction-changing conveyor belt; 52. Second falling box body; 53. Second lower inserting wedge; 54. Second storage box body; 55. Second feeding push plate; 56. Second cruciform elastic lining; 57. Second elastic auxiliary piece; 58. Second output feeding plate; 59. Auxiliary material frame conveyor belt; 60. Auxiliary material frame body; 61. Inner guide plate in auxiliary frame; 62. Bottom feeding channel of auxiliary frame; 63. Auxiliary support frame; 64. Auxiliary rotating prism; 65. Auxiliary supporting hand; 66. Third conveyor belt; 67. Third side baffle; 68. Third blocking manipulator; 69. Third positioning manipulator; 70. Third output obliquely pushing head; 71. Oil groove milling feeding plate; 72. Oil groove milling secondary feeding manipulator; 73. Side wall of oil groove milling; 74. Three-coordinate head of oil groove milling; 75. Lifting and pressing head of oil groove milling; 76. Lower profiling arc of oil groove milling; 77. Side positioning plate of oil groove milling; 78. Bottom process notch of oil groove milling; 79. Alloy drill of oil groove milling; 80. Flat drill of oil groove milling; 81. Milling cutter of oil groove milling; 82. Grooving cutter of oil groove milling; 83. Output telescopic arm of oil groove milling; 84. Finishing feeding output belt; 85. Finishing turning and inclined conveyor belt; 86. Finishing front inclined arc plate; 87. Finishing feeding conveyor belt; 88. Finishing vertical plate; 89. Finishing inclined guide plate; 90. Finishing positioning groove; 91. Finishing reset spring piece; 92. Finishing horizontal U-shaped pushing frame; 93. Finishing three-axis telescopic rod94. Dressing side fixed plate; 95. Dressing inner wall support rod; 96. Dressing side movable plate; 97. Dressing workbench; 98. Dressing positioning step; 99. Dressing output rotating frame; 100. Dressing lower arc pressure plate; 101. Dressing tool rod; 102. Dressing tool head; 103. Dressing inclined conveyor belt; 104. Dressing rear baffle; 105. Dressing output tipping roller; 106. Lip feeding conveyor belt; 107. Lip adjustment tipping roller; 108. Lip drop conveyor belt; 109. Lip V-shaped positioning jig; 110. Lip two-coordinate lifting seat; 111. Lip active rod; 112. Lip semicircular positioning plate; 113. Lip side fixed plate; 114. Lip side movable plate; 115. Lip side plate driving rod; 116. Lip gantry machine base; 117. Lip gantry planer; 118. Lip auxiliary machine head; 119. Lip grinding tool seat; 120. Lip grinding drive shaft; 121. Lip grinding edge tilting grinding wheel; 122. Lip output conveyor belt; 123. Lip traction rod; 124. Third output pusher electromagnetic valve; 125, third output push head hydraulic cylinder; 126, third output linkage left push rod; 127, third output linkage right push rod; 128, third output stroke switch; 129, milling oil trough secondary feeding solenoid valve; 130, milling oil trough secondary feeding motor; 131, milling oil trough secondary feeding bevel gear set; 132, gear rack assembly; 133, coupling; 134, output arm solenoid valve; 135, output telescopic arm hydraulic lock; 136, output telescopic arm hydraulic cylinder; 137, output telescopic arm stroke switch; 13 8. Input voltage; 139. Voltage transformer PT; 140. Indicator module L; 141. DC circuit; 142. DC main switch SA; 143. DC relay KM; 144. Rectifier; 145. Relay SB; 146. PLC; 147. DC emergency stop switch SD; 148. Control switch SC; 149. Control relay KB; 150. Intermediate relay KC; 151. Industrial circuit; 152. Working motor; 153. Interlock switch SD; 154. Warning light. ; DETAILED DESCRIPTION

[0026] like Figure 1-12 As shown, the bearing processing system of this embodiment also includes a frame assembly, and a bearing automatic processing and transmission line arranged on the frame assembly and used to transfer the bearing parts 1 between processes, a bearing milling positioning lip device which is sequentially connected with the bearing automatic processing and transmission line processes, a bearing inner hole milling device, a bearing inner oil line boring device, and a bearing oil line inner hole machine 12.

[0027] The bearing automatic processing transmission line includes a first conveying device 2 whose input end is connected with the output end of the bearing milling positioning lip device, a first separation and matching device 3 whose input end is connected with the output end of the first conveying device 2, and a first feeding manipulator 4 used for connecting the first separation and matching device 3 with the bearing inner hole milling device, and a second conveying device 6 whose input end is connected with the output end of the first feeding manipulator 4;

[0028] The first conveying device 2 includes two first conveying belts 14 arranged in parallel, and a first indexing toothed thumbwheel 15 arranged above the output end of the first conveying belts 14;

[0029] The bearing bushes 1 on the two first conveyor belts 14 are arranged face to face; the linear velocity direction of the lower end of the first indexing toothed paddle wheel 15 is the same as the conveying direction of the upper portion of the first conveyor belt 14; when the first indexing toothed paddle wheel 15 is stationary, the teeth of the first indexing toothed paddle wheel 15 block the bearing bushes 1 on the first conveyor belt 14 from moving forward, and when the first indexing toothed paddle wheel 15 rotates, the teeth of the first indexing toothed paddle wheel 15 move the bearing bushes 1 on the first conveyor belt 14 forward;

[0030] The first separation and matching device 3 includes two first herringbone guide plates 16 arranged in a herringbone shape in front of the output end of the first conveyor belt 14, two first V-shaped guide frames 17 symmetrically located below the first herringbone guide plates 16, a first transverse inclined guide channel 18 transversely arranged on the first V-shaped guide frame 17 and used to receive the bearing 1 sliding down from the first herringbone guide plate 16, a first side plate notch 19 transparently arranged on the first V-shaped guide frame 17 and located on both sides of the first transverse inclined guide channel 18, a first tail process notch 20 transparently arranged on the first V-shaped guide frame 17 and located at the input end of the first transverse inclined guide channel 18 and connected to the first side plate notch 19, a first side push arm 21 arranged on the first V-shaped guide frame 17 along the conveying direction of the first transverse inclined guide channel 18, and a first side push arm 21 transversely arranged at the end of the first side push arm 21 and used to enter the first transverse inclined guide channel 18 through the corresponding first side plate notch 19 to block the first transverse inclined guide channel 18 located above the first side plate notch. a first side telescopic rod 22 through which the bearing bush 1 in the guide channel 18 slides down, a first backward-pushing L-shaped rod 23 provided at the end of the first side telescopic rod 22 and used to enter the upper end of the first transverse inclined guide channel 18 through the first tail process notch 20 and push the bearing bush 1 in the first transverse inclined guide channel 18 to slide down, a first backward-pushing C-shaped arc plate 24 provided on the first backward-pushing L-shaped rod 23 and used to contact the outer arc surface of the bearing bush 1, a first separation conveyor belt 25 provided between the oblique lower ends of the first transverse inclined guide channel 18, a first mating positioning jig 26 provided on the first separation conveyor belt 25 and used to receive the bearing bush 1 dropped from the first transverse inclined guide channel 18, a first mating positioning step 28 provided in the first mating positioning jig 26, a first mating process inner stop 27 provided at the center of the first mating positioning step 28, and a first radial process groove 29 distributed radially on the first mating positioning step 28 and communicating with the first mating process inner stop 27;

[0031] The bearing bush 1 on the first transverse inclined guide channel 18 slides into the first matching positioning step 28 for positioning;

[0032] The first feeding robot 4 includes a first mechanical lifting and rotating base 30 arranged outside the output end of the first separation conveyor belt 25, a first telescopic mechanical head 31 arranged on the first mechanical lifting and rotating base 30, a first lifting head 32 arranged at the lower end of the first telescopic mechanical head 31, a first rotating head 33 connected below the first lifting head 32, first telescopic fingers 34 radially telescopically distributed on the outer side wall of the first rotating head 33, and a first lower positioning inner stop 35 arranged at the lower end of the first lifting head 32;

[0033] The first rotating head 33 descends and enters into the first matching process inner stop 27 of the first matching positioning jig 26 located at the output end of the first separation conveyor belt 25 and rotates, the first telescopic finger 34 enters into the corresponding first radial process groove 29 and contacts with the lower surface of the bearing bush 1 in the vertical direction by pressure, and the first lower positioning inner stop 35 contacts with the upper surface of the bearing bush 1 by pressure;

[0034] The second conveying device 6 includes a second discharge conveyor belt 44 whose output end is located at the third right-angled position of the first mechanical lifting and rotating base 30, a second oblique side guide channel 46 arranged on the second discharge conveyor belt 44, a second oblique indexing shifting gear 45 arranged above the second oblique side guide channel 46 and rotating and shifting the bearing bush 1 along the direction corresponding to the second oblique side guide channel 46, a second straight inclined conveyor belt 47 arranged at the output end of a second oblique side guide channel 46 and receiving the bearing bush 1 output from the second discharge conveyor belt 44, a second spiral conveyor belt 48 arranged at the output end of another second oblique side guide channel 46 and receiving the bearing bush 1 output from the second discharge conveyor belt 44, a second aggregate conveyor belt 49 arranged in the middle below the second straight inclined conveyor belt 47 and having the same conveying direction as the second straight inclined conveyor belt 47 and having an input end arranged at the outlet of the second spiral conveyor belt 48 and receiving the bearing bush 1 after being changed in direction by the second spiral conveyor belt 48, and a second direction-changing conveyor belt 51 perpendicular to the output direction of the second aggregate conveyor belt 49;

[0035] The second conveying device 6 includes a second direction-changing pushing arm 50 disposed at one side of the output end of the second polymer conveyor belt 49 and used to push the bearing bush 1 on the second polymer conveyor belt 49 onto the second direction-changing conveyor belt 51, and its pushing speed in the direction of the second direction-changing conveyor belt 51 is the same as the conveying speed of the second direction-changing conveyor belt 51;

[0036] A spacer lining feeding device 7 is arranged above the second direction-changing conveyor belt 51.

[0037] The spacer lining feeding device 7 comprises a second drop box 52 which is arranged above the second direction-changing conveyor belt 51 and has an opening at the lower end, a second downwardly inserted wedge 53 which is movably arranged in the second drop box 52, a second material storage box 54 which is connected to the side opening of the second drop box 52 and has a second "-" shaped elastic lining 56 placed thereon, and a second feeding push plate 55 which is arranged in the second material storage box 54 and pushes the second "-" shaped elastic lining 56 in an upright state into the second drop box 52;

[0038] The second '-shaped elastic liner 56 includes a partition and a spring sheet with its root portion arranged on the side of the partition;

[0039] The bearing bush automatic processing and transmission line also includes an auxiliary transmission device 8;

[0040] The auxiliary conveying device 8 includes a material frame member 9 for receiving the bearing bush member 1 outputted from the second direction-changing conveyor belt 51 and with its opening facing downward, an auxiliary material frame conveyor belt 59 located below the second direction-changing conveyor belt 51 and used for outputting the inverted material frame member 9, an auxiliary support frame 63 arranged at the output end of the auxiliary material frame conveyor belt 59, an auxiliary rotating prism 64 rotatably arranged on the auxiliary support frame 63, auxiliary supporting hands 65 distributed on the auxiliary rotating prism 64 and inserted into the side wall of the material frame member 9, a second elastic auxiliary sheet 57 arranged above the output end of the second direction-changing conveyor belt 51, and a second output feeding plate 58 arranged obliquely downward at the outlet of the second direction-changing conveyor belt 51;

[0041] The material frame member 9 includes a hollow auxiliary material frame body 60, an auxiliary frame bottom feeding channel 62 arranged on the bottom side wall of the auxiliary material frame body 60, and an auxiliary frame inner guide plate 61 arranged at the inlet of the auxiliary material frame body 60;

[0042] The hollow upper and lower widths of the auxiliary material frame 60 are greater than the length of the auxiliary support 65;

[0043] When the auxiliary support 65 of the auxiliary rotating prism 64 drives the auxiliary material frame 60 to rotate to a state where the opening is inclined upward, the opening of the auxiliary material frame 60 is located obliquely below the second output feed plate 58, and the bearing bush 1 slides into the auxiliary material frame 60 along the second output feed plate 58;

[0044] The third conveying device 10 includes a third conveyor belt 66 whose input end is arranged at the other side of the auxiliary support frame 63 and is used to receive and convey the material frame member 9 conveyed by the auxiliary support hand 65, a third side baffle 67 arranged at the side of the third conveyor belt 66, a third blocking mechanical arm 68 arranged above the third conveyor belt 66 and used to block the material frame member 9 from moving forward to the third transverse pushing station, a third positioning mechanical arm 69 arranged above the third conveyor belt 66 and used to block the material frame member 9 from leaving the third transverse pushing station, and a third output oblique pusher 70 arranged at the third transverse pushing station and used to enter the auxiliary frame bottom feeding channel 62 in turn and push the bearing bush member 1 out transversely.

[0045] The bearing automatic processing transmission line also includes a trimming feed input conveyor belt for conveying the output of the milling oil trough device 11, a trimming feed input shift rod arranged on one side of the trimming feed input conveyor belt and used to change the bearing component 1 from an inverted state to a flat state, a trimming feed output belt 84 arranged perpendicularly to the trimming feed input conveyor belt and whose input end is connected to the output end of the trimming feed input conveyor belt, a trimming turning inclined conveyor belt 85 arranged laterally inclined and whose input end is connected to the output end of the trimming feed output belt 84, a trimming front inclined arc plate 86 arranged obliquely at the output end of the trimming turning inclined conveyor belt 85, a trimming feed conveyor belt 87 whose input end is located below the trimming turning inclined conveyor belt 85 and whose conveying direction is perpendicular to the trimming feed output belt 84, a trimming vertical upright plate 88 distributed laterally on the trimming feed conveyor belt 87, and a trimming inclined guide plate 89 arranged in front of the trimming vertical upright plate 88 , a trimming positioning groove 90 arranged between a trimming vertical upright plate 88 and a trimming inclined guide plate 89, a trimming reset spring sheet 91 arranged on the trimming vertical upright plate 88, a trimming transverse U-shaped push frame 92 arranged transversely on one side of the output end of the trimming feeding conveyor belt 87 and used to push the bearing bush component 1 transversely away from the trimming positioning groove 90 and into the inner hole machine 12 of the bearing bush oil repair line, a trimming three-axis telescopic rod 93 arranged in parallel on one side of the trimming feeding conveyor belt 87, a trimming side fixed plate 94 distributedly arranged on the trimming three-axis telescopic rod 93 and used to contact the side surface of the bearing bush component 1, at least two trimming inner wall support rods 95 radially arranged on the trimming three-axis telescopic rod 93 and used to contact the inner arc surface of the bearing bush component 1, and a trimming side movable plate 96 arranged on the trimming three-axis telescopic rod 93 and located on the other side of the trimming three-axis telescopic rod 93 and used to be pushed by a cylinder to contact the other side surface of the bearing bush component 1;

[0046] The bearing bush component 1 falls from the trimming and turning inclined conveyor belt 85 into the trimming and positioning groove 90 .

[0047] The equipment for milling inner holes of bearing bushes includes an inner hole boring and milling device 5;

[0048] The inner hole boring and milling device 5 comprises a boring and milling frame 36 arranged at one side of the second right-angle station of the first feeding manipulator 4, a boring and milling rotating frame 37 arranged on the boring and milling frame 36, boring and milling positioning jigs 38 distributed in a circumferential array on the boring and milling rotating frame 37, a boring and milling positioning center cone sleeve 41 which is arranged in the central through hole of the boring and milling positioning jig 38 and is larger at the top and smaller at the bottom, a boring and milling opening elastic sleeve 42 which is arranged in the boring and milling positioning center cone sleeve 41 and is used for elastically contacting the outer side wall of the bearing bush 1, a boring and milling upper push frame 39 which is arranged at the replacement station of the boring and milling frame 36 and is used for pushing up the lower end surface of the bearing bush 1, and a boring and milling process baffle 40 which is distributed on the boring and milling rotating frame 37 and is used for blocking the contact with the upper end surface of the boring and milling opening elastic sleeve 42;

[0049] The first lower positioning inner stop 35 presses the bearing bush 1 downward to contact the inner wall of the boring and milling opening elastic sleeve 42.

[0050] A boring and milling machine head is arranged on the boring and milling machine frame 36 , a boring and milling head for pressure contact with the upper end surface of the bearing bush 1 is distributed on the lower end surface of the boring and milling machine head, and a boring and milling cutter rod 43 for machining the inner hole of the bearing bush 1 is arranged at the lower end of the boring and milling machine head.

[0051] The bearing shell inner oil line boring equipment includes an oil groove milling device 11;

[0052] The milling oil groove device 11 includes a milling oil groove feed plate 71 on which an undercut bearing bushing 1 is placed, a milling oil groove secondary feeding robot arm 72 arranged on one side of the undercut milling oil groove feed plate 71 and used to push the bearing bushing 1, a milling oil groove bottom process notch 78 arranged at the output end of the undercut milling oil groove feed plate 71, a milling oil groove side wall 73 arranged on both sides of the milling oil groove bottom process notch 78 and located on both sides of the bearing bushing 1, a milling oil groove three-coordinate machine head 74 arranged on one side of the milling oil groove side wall 73, a milling oil groove lifting head 75 arranged on the milling oil groove three-coordinate machine head 74, a milling oil groove lower contour arc 76 arranged at the lower end of the milling oil groove lifting head 75 and used for pressure contact with the upper end arc surface of the undercut bearing bushing 1, and a milling oil groove lower contour arc 76 movably arranged at the bottom of the milling oil groove. The oil groove side positioning plates 77 are arranged on both sides of the lower contoured arc 76 of the oil groove, the oil groove flat head drill 80 and the oil groove alloy drill 79 are arranged below the process notch 78 at the bottom of the oil groove and driven by the machine head with the cutter head facing upward and drilling holes on the inner arc surface of the bearing bush 1, the oil groove milling cutter 81 is arranged below the process notch 78 at the bottom of the oil groove and driven by the machine head with the cutter head facing upward and transversely milling grooves on the inner arc surface of the bearing bush 1, the oil groove grooving cutter 82 is arranged below the process notch 78 at the bottom of the oil groove and driven by the machine head with the cutter head facing upward and longitudinally milling oil grooves on the inner arc surface of the bearing bush 1, and the oil groove output telescopic arm 83 is arranged below the process notch 78 at the bottom of the oil groove and has telescopic fingers to output the processed bearing bush 1.

[0053] The inner hole machine 12 of the bearing oil repair line includes a dressing workbench 97, a dressing positioning step 98 arranged on the dressing workbench 97 and used for positioning and contacting with the open end face of the undercut bearing component 1, a dressing output rotating frame 99 arranged on one side of the dressing positioning step 98, a dressing lower arc pressure plate 100 arranged at the lower ends of the two end arms of the dressing output rotating frame 99 and having a suction nozzle, a dressing process channel arranged between the dressing positioning steps 98, a dressing tool rod 101 arranged in the dressing process channel, a dressing tool head 102 arranged on the dressing tool rod 101 and used for contacting with the inner arc surface of the bearing component 1, a dressing inclined conveyor belt 103 inclinedly arranged on the dressing workbench 97 and used for receiving the bearing component 1 delivered by the dressing lower arc pressure plate 100, a dressing rear baffle plate 104 arranged at the output end of the dressing inclined conveyor belt 103, and a dressing output laying roller 105 arranged on the dressing inclined conveyor belt 103.

[0054] The bearing milling and positioning lip device includes a lip processing device 13; the lip processing device 13 includes a lip feeding conveyor belt 106 for conveying the upright bearing member 1, a lip falling conveyor belt 108 which is in the same direction as the lip feeding conveyor belt 106 and whose input end is located below the output end of the lip feeding conveyor belt 106, a lip adjustment and lowering roller 107 which is arranged above the input end of the lip falling conveyor belt 108, and a lip adjusting roller 107 which is distributed on the lip falling conveyor belt 108 and is used to receive the lip feeding conveyor belt 106 from the lip feeding conveyor belt 108. The lip V-shaped positioning jig 109 of the falling bearing bush 1, the lip processing workbench arranged on the output end of the lip falling conveyor 108, the lip two-coordinate lifting seat 110 arranged on the side of the lip processing workbench, the lip active rod 111 arranged on the lip two-coordinate lifting seat 110 along the conveying direction, the lip semicircular positioning plate 112 distributed on the lip active rod 111 and in contact with the inner arc wall of the bearing bush 1 with the opening facing upward, and the lip semicircular positioning plate 112 arranged on the lip active rod 111 and located at the lip semicircular positioning plate 112 The lip side fixing plate 113 on one side of the circular positioning plate 112, the lip side plate driving rod 115 arranged on the two coordinate lifting seats 110 of the lip and parallel to the lip active rod 111, the lip side movable plate 114 arranged on the other side of the lip semicircular positioning plate 112 and used for clamping the two side walls of the bearing bush 1 with the lip side fixing plate 113, and the lip side movable plate 114 arranged on the lip processing workbench for longitudinal sliding A gantry machine base 116, a lip gantry planer 117 disposed on the lip gantry machine base 116 and used for processing the lip of the bearing bush 1, a lip auxiliary machine head 118 disposed on the lip gantry machine base 116, a lip grinding tool holder 119 disposed at the lower end of the lip auxiliary machine head 118, a lip grinding drive shaft 120 disposed on the lip grinding tool holder 119, a lip grinding edge tilting grinding wheel 121 rotatably disposed on the lip grinding drive shaft 120 and used for grinding the planed edge,

[0055] A lip output conveyor 122 is arranged on one side of the lip falling conveyor 108, a push rod / suction nozzle is arranged at the input end of the lip output conveyor 122 and is used to laterally deliver the bearing component 1 in the lip falling conveyor 108 to the lip output conveyor 122, two lip separation guide channels are arranged on the lip output conveyor 122, and a lip traction rod 123 is swingably arranged at the end of the partition plate in the lip separation guide channel and guides the bearing component 1 to change direction.

[0056] The bearing oil line boring equipment also includes a bearing oil line boring machine hydraulic system;

[0057] The hydraulic system of the bearing bush vertical boring oil line machine includes a third output push head solenoid valve 124, a third output push head hydraulic cylinder 125, a third output linkage left push rod 126, a third output linkage right push rod 127, a third output stroke switch 128, a milling oil groove secondary feeding solenoid valve 129, a milling oil groove secondary feeding motor 130, a milling oil groove secondary feeding bevel gear set 131, a gear rack assembly 132, a coupling 133, an output arm solenoid valve 134, an output telescopic arm hydraulic lock 135, an output telescopic arm hydraulic cylinder 136, an output telescopic arm stroke switch 137,

[0058] The third output push head hydraulic cylinder 125 drives the third output oblique push head 70 to extend and retract; the rod chamber and the rodless chamber of the third output push head hydraulic cylinder 125 are respectively connected to the corresponding oil outlets of the third output push head solenoid valve 124 with a middle position function of M type; the third output linkage left push rod 126 and the third output linkage right push rod 127 are respectively arranged at the root and end of the piston rod of the third output push head hydraulic cylinder 125; the third output stroke switch 128 is at the end position of the piston rod stroke of the third output push head hydraulic cylinder 125;

[0059] The milling oil tank secondary feeding motor 130 drives the milling oil tank secondary feeding mechanical arm 72 to swing; the pipeline of the milling oil tank secondary feeding motor 130 is connected to the oil outlet corresponding to the milling oil tank secondary feeding electromagnetic valve 129;

[0060] The reversing handles on both sides of the milling oil tank secondary feeding solenoid valve 129 correspond to the third output linkage left push rod 126 and the third output linkage right push rod 127 respectively;

[0061] The milling oil trough secondary feeding motor 130 is connected to the milling oil trough secondary feeding bevel gear group 131, and the milling oil trough secondary feeding bevel gear group 131 drives the gear rack assembly 132 through the transmission shaft. The output rack of the gear rack assembly 132 is connected to the output arm solenoid valve 134 through the coupling 133, and the output telescopic arm hydraulic cylinder 136 drives the milling oil trough output telescopic arm 83 to move. An output telescopic arm hydraulic lock 135 is arranged on the pipeline between the output arm solenoid valve 134 and the output telescopic arm hydraulic cylinder 136; the output telescopic arm stroke switch 137 is at the stroke end of the output telescopic arm hydraulic cylinder 136.

[0062] The bearing oil line boring equipment also includes the bearing oil line boring machine electronic control system;

[0063] The electronic control system of the bearing oil boring line machine includes an input voltage 138, a voltage transformer PT139, an indicator light module L140, a DC circuit 141, a DC main switch SA142, a DC relay KM143, a rectifier 144, a relay SB145, a PLC146, a DC emergency stop switch SD147, a control switch SC148, a control relay KB149, an intermediate relay KC150, an industrial circuit 151, a working motor 152, an interlock switch SD153, and a warning light 154;

[0064] A DC main switch SA142 and a control coil of a DC relay KM143 are connected in series on a DC circuit 141; an execution switch of the DC relay KM143 is connected between a rectifier 144 and a secondary coil of a voltage transformer PT139;

[0065] The input voltage 138 is electrically connected to the primary coil of the voltage transformer PT139;

[0066] The input end of the rectifier 144 and the indicator light module L140 are connected in parallel to the secondary coil of the voltage transformer PT139;

[0067] The control coil of the relay SB145 and the input end of the PLC146 are connected in parallel between the output end of the rectifier 144; a DC emergency stop switch SD147 is provided at the output end of the rectifier 144;

[0068] The controller of the control switch SC148 and the control relay KB149 are connected in series to the corresponding output end of the PLC146;

[0069] The execution switch of the control relay KB149 and the control coil of the intermediate relay KC150 are connected in series between the output ends of the rectifier 144;

[0070] The industrial circuit 151 supplies power to each working motor 152 of the milling oil groove device 11 through the execution switch of the relay SB145; the working motor 152 is powered by the execution switch of the series-connected intermediate relay KC150 and the normally closed switch of the interlock switch SD153; the warning light 154 is powered by being connected in series with the linked normally open switch of the interlock switch SD153.

[0071] The bearing processing technology of this embodiment is based on a bearing processing system, which includes a frame assembly, a bearing automatic processing and transmission line arranged on the frame assembly and used to transmit the bearing parts 1 between processes, a bearing milling and positioning lip device connected with the bearing automatic processing and transmission line process in sequence, a bearing milling inner hole device, a bearing inner oil line boring device, and a bearing oil line inner hole machine 12; the process includes the following processes:

[0072] Process 1: milling the joint lip; using the bearing milling to locate the lip device;

[0073] Process 2: milling inner hole; using the equipment used for milling inner hole of bearing;

[0074] Process three, boring the inner oil line; using the bearing inner oil line boring equipment;

[0075] Process 4, repairing the inner hole; using the bearing oil line inner hole repairing machine 12;

[0076] Each process is connected through the bearing automatic processing and transmission line.

[0077] In process four or between process one and process two, the outer circle processing of the axle shell is carried out.

[0078] Process 1, milling the joint lip includes the following steps;

[0079] Step 1, first, the flat bearing bush 1 is blocked by the lip adjustment and laying roller 107 on the lip feeding conveyor 106, and falls down to the lip V-shaped positioning jig 109 of the lip falling conveyor 108, with the opening facing upward; then, the lip two-coordinate lifting seats 110 extend to the lip V-shaped positioning jig 109 and then descend, so that the lip semicircular positioning plate 112 contacts the inner wall of the bearing bush 1; secondly, the lip side plate driving rod 115 is driven, and the lip side movable plate 114 moves toward the lip side fixed plate 113 to clamp the two side walls of the bearing bush 1, and then it is brought to the lip processing workbench and positioned in the semicircular groove;

[0080] Step 1 and 2, first, the lip gantry machine base 116 moves to the top of the bearing bush 1; then, the lip gantry planers 117 on both sides move longitudinally and feed downward to process the lip mating surface; secondly, the lip grinding edge tilting grinding wheel 121 moves longitudinally to grind the processed lip;

[0081] Step 13. After the processing is completed, first, the two-coordinate lifting seat 110 of the lip drives the bearing 1 back to the lip V-shaped positioning jig 109; then, the push rod / suction nozzle takes out the bearing 1 and places it on the lip output conveyor 122; secondly, the bearing 1 is conveyed on the lip output conveyor 122, and the lip traction rod 123 swings left and right, so that the bearing 1 rotates ninety degrees alternately clockwise and counterclockwise, and enters the corresponding lip separation guide channel.

[0082] In process 2, the following steps are included:

[0083] Step 21, first, the first conveyor belt 14 conveys the bearing 1. When it reaches the end of the first conveyor belt 14, the first indexing toothed dial 15 rotates together with the first conveyor belt 14 to push the bearing 1 to the side plate corresponding to the first herringbone guide plate 16; then, the bearing 1 slides into the corresponding first transverse inclined guide channel 18, and at the same time, the first side push arm 21 blocks the bearing 1 from sliding down, and at the same time, the first indexing toothed dial 15 stops rotating to block the subsequent bearing 1 from moving forward; secondly, the first rear-push C-shaped arc plate 24 pushes the bearing 1 so that the lip of the bearing 1 contacts the first side push arm 21 and adjusts the position; again, the first side push arm 21 retracts, and the first rear-push C-shaped arc plate 24 pushes the corresponding bearing 1 to the first matching positioning step 28, and automatically matches and positions it; finally, the first separation conveyor belt 25 transports the first matching positioning jig 26 carrying the bearing 1;

[0084] Step 22, first, the first telescopic mechanical head 31 comes to the top of the first matching positioning mold 26 located at the output end of the first separation conveyor belt 25; then, the first rotating head 33 enters the first matching process inner stop 27 and rotates so that the first telescopic finger 34 corresponds to the first radial process groove 29; secondly,

[0085] At the same time, the first lifting head 32 drives the first lower positioning inner stop 35 to buckle on the bearing bush 1, and is in pressure contact with the upper surface of the bearing bush 1; again, the first feeding manipulator 4 drives the first pair of positioning jigs 26 to the loading and unloading stations of the inner hole boring and milling device 5;

[0086] Step 2 and 3, first, the first feeding manipulator 4 places the matched bearing bush 1 into the boring and milling opening elastic sleeve 42; then, the boring and milling upper push frame 39 pushes up the boring and milling positioning center cone sleeve 41, and uses the taper to hold the boring and milling opening elastic sleeve 42; secondly, the boring and milling rotating frame 37 rotates the boring and milling positioning jig 38 to the boring and milling station; again, the boring and milling cutter rod 43 processes the inner hole of the bearing bush 1; later, when the processing is completed, the boring and milling positioning jig 38 rotates to the loading and unloading station, and the boring and milling upper push frame 39 pulls down the boring and milling positioning center cone sleeve 41; then, the first feeding manipulator 4 lifts up the bearing bush 1 from the boring and milling positioning jig 38, and at the same time, the boring and milling process baffle 40 blocks the boring and milling opening elastic sleeve 42 from rising and separating from the bearing bush 1;

[0087] Step 24; first, the first feeding robot 4 places the bearing 1 on the second discharge conveyor 44; then, the second oblique indexing shift gear 45 is used to rotate obliquely and shift together with the second discharge conveyor 44 to separate the bearing 1 into their respective corresponding second oblique side guide channels 46; secondly, the bearing 1 on one side is linearly conveyed along the second linear inclined conveyor 47 to the second aggregate conveyor 49, and the bearing 1 on the other side is conveyed along the second spiral conveyor 48 to the second aggregate conveyor 49 and is located on the rear side of the bearing 1 that is linearly conveyed along the second linear inclined conveyor to the second aggregate conveyor; again, under the swinging push of the second change-of-direction push arm 50, the bearing 1 on the second aggregate conveyor 49 is conveyed to the second change-of-direction conveyor 51.

[0088] In process three, the following steps are included:

[0089] Step 31: First, when the bearing bush 1 is conveyed on the second redirecting conveyor belt 51, the second feeding push plate 55 and the second downward inserting wedge 53 act to drop the second "-" shaped elastic liner 56 between the adjacent bearing bushes 1; then, the auxiliary material frame conveyor belt 59 drives the auxiliary material frame 60 to be conveyed and inserted into the auxiliary support 65; secondly, the auxiliary rotating prism 64 drives the auxiliary material frame 60 to rotate to a state where the opening is tilted upward, and at the same time, the second redirecting conveyor belt 51 slides the bearing bush 1 into the auxiliary material frame 60 through the second output feed plate 58;

[0090] Step 32, first, the auxiliary rotating prism 64 places the auxiliary material frame 60 equipped with the bearing bush 1 on the third conveyor belt 66; then, the auxiliary support hand 65 rotates and separates from the auxiliary material frame 60; secondly, the third conveyor belt 66 conveys it to the third transverse pushing station, and the third blocking mechanical arm 68 and the third positioning mechanical arm 69 fall; thirdly, the third output oblique pushing head 70 feeds the bearing bush 1 located at the bottom of the auxiliary material frame conveyor belt 59 from the auxiliary frame bottom feeding channel 62 to the undercut milling oil groove feeding plate 71;

[0091] Step three, first, the milling oil groove secondary feeding robot arm 72 pushes the bearing 1 to between the side walls 73 of the milling oil groove; then, the milling oil groove lifting head 75 presses down the outer wall of the bearing 1; secondly, the corresponding machine heads control the milling oil groove flat head drill 80, the milling oil groove alloy drill 79, the milling oil groove milling cutter 81, and the milling oil groove grooving cutter 82 to process the oil groove on the inner arc surface of the bearing 1; again, the milling oil groove lifting head 75 rises, and the milling oil groove output telescopic arm 83 sends the bearing 1 out.

[0092] In process 4, the following steps are included:

[0093] Step 41: First, the push rod at the output end of the trimming feed input conveyor belt sends the bearing bush 1 on the trimming feed input conveyor belt to the trimming feed output belt 84; then, the bearing bush 1 passes through the trimming feed output belt 84 and the trimming turning inclined conveyor belt 85, and falls into the trimming positioning groove 90 of the trimming feed input conveyor belt 87 under the guidance of the trimming front inclined arc plate 86;

[0094] Step 42, first, the trimming transverse U-shaped push frame 92 pushes the bearing bush 1 in the trimming positioning groove 90 laterally; then, the trimming three-axis telescopic rod 93 enters and extends into the lower end space of the bearing bush 1 and rises; secondly, the trimming side fixed plate 94 and the trimming side movable plate 96 clamp the bearing bush 1 and send it to the trimming positioning step 98; thirdly, the trimming output rotating frame 99 drives the trimming lower arc surface pressing plate 100 to press the bearing bush 1 downward; later, the trimming cutter head 102 trims the inner arc surface;

[0095] Step 43: First, the trimming lower arc pressure plate 100 drives the bearing component 1 to the trimming inclined conveyor belt 103; then, under the action of the trimming output laying roller 105, the trimming inclined conveyor belt 103 outputs the bearing component 1.

[0096] The conveyor belt side of the present invention is not shown, the first conveyor belt 14 is used for transmission, the first indexing toothed dial wheel 15 is used for auxiliary pushing and blocking, the first herringbone guide plate 16 is used for automatic separation, the first transverse inclined guide channel 18 of the first V-shaped guide frame 17 is used for automatic sliding down and alignment, the notch facilitates the movement of the rod, the first side push arm 21, the first side telescopic rod 22, the first rear push L-shaped rod 23 are used for driving or blocking, and the position is adjusted automatically, the first matching process inner stop 27 is used for easy entry of the manipulator, the first matching positioning step 28 is used for automatic alignment, and the first radial process groove 29 is used for easy entry of the telescopic finger. The first mechanical lifting and rotating base 30, the first telescopic mechanical head 31, the first lifting head 32, the first rotating head 33, the first telescopic finger 34, and the first lower positioning inner stop 35 are used for clamping the paired bearings.

[0097] The boring and milling upper push frame 39 realizes the combination or separation of the bearing shell and the boring and milling opening elastic sleeve 42, the boring and milling opening elastic sleeve 42 realizes automatic alignment, the boring and milling process baffle 40 blocks the elastic sleeve from discharging, the boring and milling positioning center cone sleeve 41 automatically aligns, and the boring and milling cutter rod 43 bores the inner hole.

[0098] The second discharge conveyor belt 44 realizes conveying, and the second oblique indexing and shifting gear 45 realizes auxiliary shifting and blocking. Through the second oblique side guiding channel 46, the second straight inclined conveyor belt 47, the second spiral conveyor belt 48, and the second polymerization conveyor belt 49, the arrangement mode of the bearing shells is changed. The second direction-changing pushing arm 50 performs auxiliary pushing. The second direction-changing conveyor belt 51 and the second falling box body 52 facilitate material storage. It can perform intermittent processing on the outer arc surface. The second downward inserting wedge 53, the second material storage box body 54, and the second feeding push plate 55 realize the falling of the second cruciform elastic liner 56. By using the second cruciform elastic liner 56, the bearing shells are separated from each other to avoid mutual scratching. The second elastic auxiliary piece 57 and the second output feeding plate 58 realize output.

[0099] The auxiliary material frame conveyor belt 59, the auxiliary material frame body 60, the inner guiding plate 61 of the auxiliary frame, and the bottom feeding channel 62 of the auxiliary frame facilitate the storage of the bearing shells. The auxiliary support frame 63, the auxiliary rotating prism 64, and the auxiliary supporting hand 65 realize automatic fork-taking of the frame and automatic separation by means of automatic falling.

[0100] The third conveyor belt 66, the third side baffle 67, the third blocking robotic arm 68, the third positioning robotic arm 69, and the third output oblique pushing head 70 realize direction-changing output.

[0101] The side wall 73 of the milling oil groove realizes positioning, and the lifting and pressing head 75 of the oil groove realizes positioning and pressing. Through the alloy drill 79 for milling the oil groove, the flat drill 80 for milling the oil groove, the milling cutter 81 for milling the oil groove, and the grooving cutter 82 for milling the oil groove, the oil groove is processed according to the programming. The telescopic arm 83 for output of the milling oil groove realizes discharging.

[0102] The bearing shell is changed in direction through the trimming and turning-over inclined conveyor belt 85. The trimming front inclined arc plate 86 facilitates the falling of the bearing shell. When the conveyor belt conveys forward, the trimming vertical plate 88, the trimming inclined guiding plate 89, the trimming positioning groove 90 are adjusted to make it in a vertical state. The trimming reset spring piece 91 prevents the bearing shell from being overly inclined. The trimming transverse U-shaped pushing frame 92, the trimming three-axis telescopic rod 93, the trimming side fixing plate 94, the trimming inner wall support rod 95, the trimming side movable plate 96, the trimming workbench 97, the trimming positioning step 98, the trimming output rotating frame 99, the trimming lower arc surface pressing plate 100, the trimming tool rod 101, the trimming tool head 102, the trimming inclined conveyor belt 103, the trimming rear baffle 104, and the trimming output laying-down roller 105 are used to grind and deburr the burrs at the oil groove.

[0103] The lip V-shaped positioning fixture 109 realizes positioning. The two-coordinate lifting seat 110 of the lip. The joint surface is processed by the lip planer 117, and the burrs are ground off by the lip grinding edge inclined grinding wheel 121.

[0104] The third output push head solenoid valve 124 realizes hydraulic control, the third output push head hydraulic cylinder 125 realizes linear drive, the third output linkage left push rod 126 and the third output linkage right push rod 127 realize linkage control of the milling oil trough secondary feeding solenoid valve 129, the third output stroke switch 128 realizes reversing control, the milling oil trough secondary feeding motor 130 drives the milling oil trough secondary feeding bevel gear group 131 and the gear rack assembly 132 to drive, realize the linkage and reversing of swing and output reversing, the coupling 133 realizes pulling control of the output arm solenoid valve 134, the output telescopic arm hydraulic lock 135 realizes pressure maintenance, the output telescopic arm hydraulic cylinder 136 realizes drive, and the output telescopic arm stroke switch 137 realizes stroke control.

[0105] The input voltage 138 provides power, the voltage transformer PT139 implements voltage reduction processing, the indicator light module L140 implements circuit monitoring, the DC circuit 141 provides power, the DC main switch SA142 controls the on and off of the DC relay KM143, the rectifier 144 converts AC to DC, the relay SB145 implements intermediate control, the PLC146 implements logical control of the operation of each motor, the DC emergency stop switch SD147 implements safety control, the control switch SC148 implements remote control, the control relay KB149 and the intermediate relay KC150 implement relay control, the industrial circuit 151 and the working motor 152 are powered on and off, the interlock switch SD153 implements linked power on and off control, and the warning light 154 shows that the corresponding motor is working.

[0106] The invention has reasonable design, low cost, durability, safety and reliability, simple operation, time and labor saving, money saving, compact structure and convenient use.

Claims

1. A bearing bushing processing technology, characterized in that : With the aid of a bearing processing system, the system includes a frame assembly, and a bearing automatic processing and transmission line arranged on the frame assembly and used to transmit bearing parts (1) between processes, a bearing milling and positioning lip device connected in sequence with the bearing automatic processing and transmission line process, a bearing inner hole milling device, a bearing inner oil line boring device, and a bearing oil line inner hole repairing machine (12); the process includes the following processes: Process 1: milling the joint lip; using the bearing milling to locate the lip device; Process 2: milling inner hole; using the equipment used for milling inner hole of bearing; Process three, boring the inner oil line; using the bearing inner oil line boring equipment; Process 4, repairing the inner hole; using a bearing oil line inner hole repairing machine (12); Each process is connected through the bearing automatic processing and transmission line; In process three, the following steps are included: Execute step three-one; first, when the bearing bush component (1) is conveyed on the second redirecting conveyor belt (51), the second feeding push plate (55) and the second downward inserting wedge (53) act to drop the second "B"-shaped elastic liner (56) between adjacent bearing bush components (1); then, the auxiliary material frame conveyor belt (59) drives the auxiliary material frame body (60) to be conveyed and inserted into the auxiliary support (65); secondly, the auxiliary rotating prism (64) drives the auxiliary material frame body (60) to rotate to a state in which the opening is tilted upward, and at the same time, the second redirecting conveyor belt (51) slides the bearing bush component (1) into the auxiliary material frame body (60) through the second output feeding plate (58); In process three, the following steps are included: Execute step three-two. First, the auxiliary rotating prism (64) places the auxiliary material frame (60) equipped with the bearing bush (1) on the third conveyor belt (66); then, the auxiliary support (65) rotates and separates from the auxiliary material frame (60); secondly, the third conveyor belt (66) conveys it to the third transverse pushing station, and the third blocking mechanical arm (68) and the third positioning mechanical arm (69) fall down; thirdly, the third output oblique pushing head (70) feeds the bearing bush (1) located at the bottom of the auxiliary material frame conveyor belt (59) from the auxiliary frame bottom feeding channel (62) to the undercut milling oil groove feeding plate (71); In process three, the following steps are included: Execute step three-three. First, the oil groove milling secondary feeding robot arm (72) pushes the bearing bush (1) between the side walls (73) of the oil groove milling; then, the oil groove milling lifting head (75) presses down the outer wall of the bearing bush (1); secondly, the corresponding machine heads control the oil groove milling flat head drill (80), the oil groove milling alloy drill (79), the oil groove milling cutter (81), and the oil groove milling grooving cutter (82) to process the oil groove on the inner arc surface of the bearing bush (1); thirdly, the oil groove milling lifting head (75) rises, and the oil groove milling output telescopic arm (83) delivers the bearing bush (1).

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