A production process for self-lubricating rod end bearing

Abstract

The present invention provides a production process for a self-lubricating rod-end bearing, including blanking, forging, heat treatment, rough and fine machining, testing, spraying paint, paint processing, assembly, and warehousing; wherein, in the paint processing, a detection and processing integrated machine is used to detect, precisely process and detect the inner ring paint layer after processing, and the inner diameter of the inner ring is detected at the same time; the detection and processing integrated machine includes an XZ drive component, a clamping component and a loading and unloading component, the output end of the XZ drive component is provided with a processing component and a first detection component, and the clamping component is provided with a second detection component, and the outer diameter of the inner ring is detected before spraying, and the outer diameter of the inner ring after processing is re-detected, so as to calculate the thickness of the paint, and the paint is processed by the processing component, so as to prevent the paint from being too thick or the paint spraying uniformity is poor, thereby increasing the production accuracy of the inner ring.

Description

Technical Field

[0001] The invention relates to a rod end bearing, in particular to a production process of a self-lubricating rod end bearing. Background Art

[0002] Rod end bearings, also known as spherical bearings and fisheye bearings, are mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. This structure enables the rod end bearing to withstand larger loads, and due to its special spherical contact surface design, it can withstand radial loads, axial loads or a combined load of the two.

[0003] At present, a Chinese patent with announcement number CN110605539A discloses a production process for rod end bearings and a cutting device for production, including cutting, rust removal, heating, forming, trimming, hole extraction, shot blasting, and warehousing, thereby solving the shortcomings of the existing rod end bearing production process being complicated and the low cutting accuracy of the blank during production, thereby increasing the quality of the produced rod end bearings.

[0004] The above patent still has shortcomings. Usually, rod end bearings need to be used under various working conditions, and grease needs to be applied during use to ensure the service life of the rod end bearings. However, regular application of grease makes the labor maintenance cost of the rod end bearings high, and it is not suitable for equipment that is difficult to disassemble. With the development of self-lubricating coatings, the above problems can be solved by self-lubricating rod end bearings. However, self-lubricating rod end bearings require self-lubricating materials to be sprayed on the outside of the inner ring, which has high requirements for production precision. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a production process for a self-lubricating rod end bearing, which has the advantage of high production precision.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a production process of a self-lubricating rod end bearing, comprising the following steps:

[0007] Step 1: Cut the inner and outer rings into corresponding sizes using a material cutting machine;

[0008] Step 2: Forging: After heating the blank using a forging machine, the inner ring and the outer ring are forged into blanks close to the final shape through a die;

[0009] Step 3: Heat treatment, heat treatment of the blank through quenching furnace and tempering furnace;

[0010] Step 4: Rough and fine machining, cutting and grinding the inner and outer rings through a high-precision machining center;

[0011] Step 5: Testing: Use a testing instrument to test the inner diameter of the outer ring and the outer diameter of the inner ring;

[0012] Step 6: Spray the paint, spray the self-lubricating paint on the inner ring surface through the spray chamber;

[0013] Step 7: Coating processing: the inner ring coating layer is inspected, precision-processed and inspected after processing by the integrated inspection and processing machine, and the inner diameter of the inner ring is inspected at the same time;

[0014] Step 8: Assemble the inner ring and the outer ring;

[0015] Step 9: Storage;

[0016] The detection and processing integrated machine of step seven includes an XZ drive component, a clamping component, and a loading and unloading component. The output end of the XZ drive component is provided with a processing component and a first detection component. The clamping component is provided with a second detection component. The first detection component is used to detect the outer diameter of the inner ring, and the second detection component is used to detect the inner diameter of the inner ring.

[0017] Through the above-mentioned technical means, by spraying self-lubricating paint on the outer surface of the inner ring, the rod end bearing does not need to add grease regularly during use, by detecting the outer diameter of the inner ring before spraying, and setting a first detection component at the output end of the XZ drive component, the size of the inner ring before and after spraying is detected, so as to calculate the thickness of the paint, and the paint is processed by the processing component to prevent the paint from being too thick or the paint spraying uniformity is poor, thereby increasing the production accuracy of the inner ring.

[0018] Preferably, the processing assembly includes a mounting frame, a first rotating motor and a processing tool, the mounting frame is arranged at the output end of the XZ drive assembly, the first rotating motor is fixedly arranged on the mounting frame, the processing tool is arranged at the output end of the first rotating motor, and the first detection assembly includes a machine tool probe, the machine tool probe is arranged at the output end of the first rotating motor and is arranged opposite to the processing tool.

[0019] Through the above technical means, the first rotary motor drives the machining tool and the first detection component to rotate, and cooperates with the XZ drive component to achieve the machining and detection of the outer spherical surface of the inner ring.

[0020] Preferably, the loading and unloading assembly includes an inner ring slide, the upper end surface of the inner ring slide is inclined and has a sliding groove, the inner ring slide is also provided with an installation groove relative to the clamping assembly, a limiting cylinder 1 is provided at the side end of the installation groove, and a limiting stop block is provided at the output end of the limiting cylinder 1.

[0021] Through the above technical means, the sliding groove is set at an angle so that the inner ring rolls from a high place to a low place, and the limit block is driven to move by the limit cylinder, so that the inner ring rolls to the clamping assembly to complete the clamping, thereby realizing automatic loading and unloading of the inner ring.

[0022] Preferably, the clamping assembly includes a second rotating motor and a linear cylinder, the output end of the second rotating motor is provided with a limiting pin one, the end of the limiting pin one is also provided with a positioning block one, the output end of the linear cylinder is rotatably provided with a limiting pin two, the end face of the limiting pin two is provided with a positioning block two, and the linear cylinder drives the limiting pin two to move and cooperate with the limiting pin one to clamp the inner ring.

[0023] Through the above technical means, through the cooperation between the positioning block 1 and the positioning block 2, and through the linear cylinder driving the limiting head 2 to tighten the inner ring, the positioning and clamping of the inner ring is completed.

[0024] Preferably, the second detection assembly includes a mounting rod and a detection head, the mounting rod is fixed to the output end of the linear cylinder, the detection head is arranged on the side end of the mounting rod, a rotating hole is opened in the middle of the second limiting head, and the second limiting head is sleeved on the mounting rod.

[0025] Through the above technical means, by sleeve-arranging the second limiting plug on the mounting rod, the second limiting plug is rotationally matched with the mounting rod. When the second rotating motor drives the inner ring to rotate, the second limiting plug follows the rotation, thereby ensuring the rotation of the inner ring.

[0026] Preferably, a butt ring is further provided at the output end of the linear oil cylinder, and a plane bearing is further provided between the butt ring and the second limiting head.

[0027] Through the above technical means, the friction between the second limiting head and the retaining ring is reduced by setting a plane bearing, while ensuring the installation stability of the inner ring.

[0028] Preferably, the support ring is further provided with an annular groove at one end facing the limiting pin 2, a spring 1 is arranged in the annular groove, the other end of the spring 1 abuts against the plane bearing, one end of the rotating hole and one end of the mounting rod are respectively provided with a conical inclined surface and a conical inclined block that cooperate with each other, the detection head includes a contact displacement sensor, a spring 2 is arranged at the bottom of the detection head, a reset groove is arranged at the side end of the detection head, a reset hole is also arranged on the mounting rod, a reset push rod is arranged in the reset hole, one end of the reset push rod abuts against the reset groove, and the other end abuts against the conical inclined surface.

[0029] Through the above technical means, by setting a conical inclined surface and a conical inclined hole, and setting a spring 1, after pushing the limit head 2 to press the inner ring, the mounting rod continues to move an end distance. At this time, the spring 2 drives the detection head to be pushed out, thereby protecting the detection head from collision before the positioning block 2 enters the inner ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the detection and processing integrated machine;

[0031] Figure 2 It is a cross-sectional schematic diagram of the detection and processing integrated machine;

[0032] Figure 3 It is a structural schematic diagram of the processing component;

[0033] Figure 4 A partial cross-sectional view of the inspection and processing integrated machine;

[0034] Figure 5 for Figure 4 Schematic diagram of part A;

[0035] Figure 6 This is a schematic diagram of the second detection component when it is working.

[0036] Figure numerals: 1. integrated detection and processing machine; 2. XZ drive assembly; 3. clamping assembly; 4. loading and unloading assembly; 5. processing assembly; 6. first detection assembly; 7. second detection assembly; 8. mounting frame; 9. first rotating motor; 10. processing tool; 11. second rotating motor; 12. linear oil cylinder; 13. limit head 1; 14. positioning block 1; 15. limit head 2; 16. positioning block 2; 17. inner ring slide; 18 , sliding groove; 19, mounting groove; 20, limit cylinder 1; 21, limit cylinder 2; 22, limit block; 23, mounting rod; 24, detection head; 25, rotating hole; 26, back ring; 27, plane bearing; 28, ring groove; 29, spring 1; 30, conical inclined surface; 31, conical inclined block; 32, contact displacement sensor; 33, spring 2; 34, reset groove; 35, reset hole; 36, reset push rod; 90, inner ring. DETAILED DESCRIPTION

[0037] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0038] A production process for a self-lubricating rod end bearing comprises the following steps:

[0039] Step 1: Cut the inner ring 90 and the outer ring into corresponding sizes using a material cutting machine;

[0040] Step 2: Forging, after heating the blank using a forging machine, the inner ring 90 and the outer ring are forged into blanks close to the final shape through a die;

[0041] Step 3: Heat treatment, heat treatment of the blank through quenching furnace and tempering furnace;

[0042] Step 4: Rough and fine machining: cutting and grinding the inner ring 90 and the outer ring by a high-precision machining center, so that the inner ring 90 and the outer ring can reach accurate precision;

[0043] Step 5: Testing: Use a dial indicator or other testing instrument to test the inner diameter of the outer ring and the outer diameter of the inner ring 90;

[0044] Step 6: spraying the coating, spraying the self-lubricating coating on the outer surface of the inner ring 90 through the spray chamber;

[0045] Step 7: coating processing, the coating layer of the inner ring 90 is inspected, precision-processed and inspected after processing by the inspection and processing integrated machine 1, and the inner diameter of the inner ring 90 is inspected at the same time;

[0046] Step 8: Assemble the inner ring 90 and the outer ring;

[0047] Step 9: Storage;

[0048] like Figure 1 As shown, the detection and processing integrated machine 1 of step seven includes an XZ drive component 2, a clamping component 3 and a loading and unloading component 4. The XZ drive component 2 is composed of a screw motor in two directions, and its output end is provided with a processing component 5 and a first detection component 6. The clamping component 3 is provided with a second detection component 7. The first detection component 6 is used to detect the outer diameter of the inner ring 90, and the second detection component 7 is used to detect the inner diameter of the inner ring 90. The first detection component 6 needs to measure the outer diameter of the inner ring 90 before and after spraying, and calculate the spraying thickness of the paint while detecting the size of the inner ring 90 before spraying, and grind the paint through the processing component 5 to make the paint reach the specified thickness, thereby preventing the paint from being too thick or the paint spraying uniformity is poor, and increasing the production accuracy of the inner ring.

[0049] like Figure 1 , Figure 3 As shown, the processing assembly 5 includes a mounting frame 8, a first rotating motor 9 and a processing tool 10. The mounting frame 8 is arranged at the output end of the XZ drive assembly 2, the first rotating motor 9 is fixedly arranged on the mounting frame 8, the processing tool 10 is arranged at the output end of the first rotating motor 9, and the first detection assembly 6 includes a machine tool probe, which is arranged at the output end of the first rotating motor 9 and is arranged opposite to the processing tool 10. The processing tool 10 and the first detection assembly 6 are driven to rotate by the first rotating motor 9, and cooperate with the XZ drive assembly 2 at the same time, so as to realize the arc processing and detection of the outer spherical surface of the inner ring 90.

[0050] like Figure 1 , Figure 2 , Figure 4As shown, the clamping assembly 3 includes a second rotating motor 11 and a linear cylinder 12. A limiting pin 13 is provided at the output end of the second rotating motor 11. A positioning block 14 is also provided at the end of the limiting pin 1. A limiting pin 2 15 is rotatably provided at the output end of the linear cylinder 12. A positioning block 2 16 is provided on the end face of the limiting pin 2 15. The linear cylinder 12 drives the limiting pin 2 15 to move and cooperate with the limiting pin 13 to clamp the inner ring 90. The positioning blocks 14 and 16 are both provided with chamfered surfaces to facilitate insertion into the inner hole of the inner ring 90.

[0051] like Figure 1 , Figure 2 , Figure 4 As shown, the loading and unloading assembly 4 includes an inner ring slide 17, the upper end surface of the inner ring slide 17 is inclined and has a sliding groove 18, the curvature of the sliding groove 18 fits the curved surface of the inner ring 90, and the inner ring slide 17 is also provided with a mounting groove 19 relative to the clamping assembly 3, and a limiting cylinder 1 20 is provided at the side end of the mounting groove 19, and a limiting cylinder 21 is provided on the opposite side of the limiting cylinder 1 20, and the output ends of the limiting cylinder 1 20 and the limiting cylinder 2 21 are both provided with a limiting block 22. When the inner ring 90 rolls down from a high place When it reaches the limit block 22, the two limit blocks 22 block the inner ring 90, thereby achieving the purpose of loading. Then, the inner ring 90 enters the installation groove 19 for processing through the cooperation of the linear cylinder 12 and the limit cylinder 1 20. When the processing is completed, the limit cylinder 1 20 and the limit cylinder 2 21 cooperate with the linear cylinder 12 to make the inner ring 90 separate from the positioning block 1 14 and the positioning block 2 16, and at the same time, the limit block 22 moves out of the range of the sliding groove 18, so that the inner ring 90 continues to roll downward, thereby achieving the purpose of unloading.

[0052] like Figure 4 , Figure 5 , Figure 6 As shown, the second detection component 7 includes a mounting rod 23 and a detection head 24. The mounting rod 23 is fixed at the output end of the linear cylinder 12. The detection head 24 is arranged on the side end of the mounting rod 23. A rotating hole 25 is opened in the middle of the limit pin 15. The limit pin 15 is sleeved on the mounting rod 23. A retaining ring 26 is also provided at the output end of the linear cylinder 12. A plane bearing 27 is also provided between the retaining ring 26 and the limit pin 15, so that the limit pin 15 and the mounting rod 23 can be rotated together. When the second rotating motor 11 drives the inner ring 90 to rotate, the limit pin 15 follows the rotation. The friction between the limit pin 15 and the retaining ring 26 is reduced by providing the plane bearing 27, thereby ensuring the smooth rotation of the inner ring 90.

[0053] An annular groove 28 is also provided at one end of the butt ring 26 facing the limit head 215, a spring 29 is arranged in the annular groove 28, and the other end of the spring 29 abuts against the plane bearing 27. One end of the rotating hole 25 and one end of the mounting rod 23 are respectively provided with a conical inclined surface 30 and a conical inclined block 31 that cooperate with each other. The detection head 24 includes a contact displacement sensor 32, a spring 23 is arranged at the bottom of the detection head 24, a reset groove 34 is provided at the side end of the detection head 24, and a reset hole 35 is also provided on the mounting rod 23. The reset hole 35 is connected with the mounting hole of the detection head 24, and a reset push rod 36 is arranged in the reset hole 35. One end of the reset push rod 36 abuts against the reset groove 34, and the other end abuts against the conical inclined surface 30. When the linear cylinder 12 is in the retracted state, the bottom of the reset push rod 36 abuts against the reset groove 34, and the top of the reset push rod 36 abuts against the conical inclined surface 30. Figure 5 , Figure 6 As shown, after the limiting push head 15 is pushed to press the inner ring 90, the mounting rod 23 can continue to move an end distance to separate the conical inclined surface 30 and the conical inclined hole. At this time, the spring 23 drives the detection head 24 to be ejected, and at the same time, the reset push rod 36 moves along the reset hole 35 and gradually disengages from the reset groove 34, so that the detection head 24 will extend and perform detection when the retaining ring 26 presses against the plane bearing 27. When the inner ring 90 is processed, the conical inclined block 31 gradually approaches the conical inclined surface 30. At this time, the conical inclined surface 30 presses against the reset push rod 36 so that its tail presses the reset groove 34, and compresses the spring 23 to retract the detection head 24, thereby protecting the detection head 24. When the inner ring 90 is undergoing rotation processing, the limiting push head 15 rotates with the inner ring 90, and the mounting rod 23 and the detection head 24 are fixed, so that the inner ring 90 is measured.

[0054] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A production process for a self-lubricating rod end bearing, characterized in that: The following steps are involved: Step 1: Cutting the inner ring (90) and the outer ring into corresponding sizes using a material cutting machine; Step 2: Forging, using a forging machine to heat the blank, and then forging the inner ring (90) and the outer ring into blanks close to the final shape through a die; Step 3: Heat treatment, heat treatment of the blank through quenching furnace and tempering furnace; Step 4: Rough and fine machining, cutting and grinding the inner ring (90) and outer ring through a high-precision machining center; Step 5: Testing: using a testing instrument to test the inner diameter of the outer ring and the outer diameter of the inner ring (90); Step 6: spraying the coating, spraying the self-lubricating coating on the surface of the inner ring (90) through the spray chamber; Step 7: coating processing: the coating layer of the inner ring (90) is precisely processed and inspected by the inspection and processing integrated machine (1), and the inner diameter of the inner ring (90) is inspected at the same time; Step 8: Assembling the inner ring (90) and the outer ring; Step 9: Storage; The detection and processing integrated machine (1) of step seven comprises an XZ drive component (2), a clamping component (3) and a loading and unloading component (4); the output end of the XZ drive component (2) is provided with a processing component (5) and a first detection component (6); the clamping component (3) is provided with a second detection component (7); the first detection component (6) is used to detect the outer diameter of the inner ring (90); and the second detection component (7) is used to detect the inner diameter of the inner ring (90); The clamping assembly (3) comprises a second rotating motor (11) and a linear oil cylinder (12); a limiting plug (13) is arranged at the output end of the second rotating motor (11); a positioning block (14) is also arranged at the end of the limiting plug (13); a limiting plug (15) is rotatably arranged at the output end of the linear oil cylinder (12); a positioning block (16) is arranged at the end face of the limiting plug (15); the linear oil cylinder (12) drives the limiting plug (15) to move and cooperates with the limiting plug (13) to clamp the inner ring (90); The second detection assembly (7) comprises a mounting rod (23) and a detection head (24), wherein the mounting rod (23) is fixed to the output end of the linear oil cylinder (12), the detection head (24) is arranged on the side end of the mounting rod (23), a rotation hole (25) is provided in the middle of the second limiting head (15), and the second limiting head (15) is sleeved on the mounting rod (23); The output end of the linear oil cylinder (12) is also provided with a retaining ring (26), and a plane bearing (27) is also provided between the retaining ring (26) and the second limiting head (15); The abutting ring (26) is provided with an annular groove (28) at one end thereof facing the second limiting head (15), a spring (29) is arranged in the annular groove (28), the other end of the spring (29) abuts against the plane bearing (27), one end of the rotating hole (25) and one end of the mounting rod (23) are respectively provided with a conical inclined surface (30) and a conical inclined block (31) which cooperate with each other, the detection head (24) comprises a contact displacement sensor (32), a spring (33) is arranged at the bottom of the detection head (24), a reset groove (34) is arranged at the side end of the detection head (24), a reset hole (35) is further arranged on the mounting rod (23), a reset push rod (36) is arranged in the reset hole (35), one end of the reset push rod (36) abuts against the reset groove (34), and the other end abuts against the conical inclined surface (30).

2. The production process of a self-lubricating rod end bearing according to claim 1 is characterized by: The processing assembly (5) comprises a mounting frame (8), a first rotating motor (9) and a processing tool (10); the mounting frame (8) is arranged at the output end of the XZ driving assembly (2); the first rotating motor (9) is fixedly arranged on the mounting frame (8); the processing tool (10) is arranged at the output end of the first rotating motor (9); and the first detection assembly (6) comprises a machine tool probe, which is arranged at the output end of the first rotating motor (9) and is arranged opposite to the processing tool (10).

3. The production process of a self-lubricating rod end bearing according to claim 1 is characterized by: The loading and unloading assembly (4) comprises an inner ring slide (17), the upper end surface of the inner ring slide (17) is inclined and has a sliding groove (18), the inner ring slide (17) is also provided with a mounting groove (19) relative to the clamping assembly (3), a limit cylinder (20) is provided at the side end of the mounting groove (19), and a limit stopper (22) is provided at the output end of the limit cylinder (20).

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