Steering upper column tube subassembly assembly machine

Abstract

The application relates to a steering upper column pipe sub-assembly assembling machine tool and belongs to the technical field of steering upper column pipe assembly. The steering upper column pipe sub-assembly assembling machine tool comprises a rack, a dividing turntable, workpiece clamps, bearing assembling mechanisms, dust cover assembling mechanisms, spline shaft assembling mechanisms, sliding force testers and positioning ring assembling mechanisms; the rack is provided with the dividing turntable; eight groups of the workpiece clamps are uniformly arranged on the dividing turntable; the bearing assembling mechanisms, the dust cover assembling mechanisms, the spline shaft assembling mechanisms, the sliding force testers and the positioning ring assembling mechanisms are sequentially arranged on the rack around the dividing turntable; the steering upper column pipe sub-assembly assembling machine tool is compact in structure and ingenious in design; the assembly work of the steering upper column pipe sub-assembly can be completed mechanically; the problems of low work efficiency and high waste rate existing when the steering upper column pipe sub-assembly is manually assembled are solved; and the steering upper column pipe sub-assembly assembling machine tool is especially suitable for the needs of steering upper column pipe sub-assembly assembly.

Description

Technical Field

[0001] This invention relates to a steering upper column tube sub-assembly assembly machine tool, belonging to the field of steering upper column tube assembly technology. Background Technology

[0002] The upper steering column tube subassembly comprises seven components: the upper column, elastic bearing, splined shaft, outer ring of the dust cover, inner ring of the dust cover, locating ring, and spacer. Currently, the assembly of the upper steering column tube subassembly is done manually in stages, which not only suffers from low work efficiency but also from a high scrap rate. Therefore, it is necessary to develop an assembly machine tool to mechanize the assembly of the upper steering column tube subassembly and solve the above-mentioned problems existing in the current manual assembly. Summary of the Invention

[0003] The purpose of this invention is to provide a machine tool for assembling the steering column tube sub-assembly that is compact in structure and ingenious in design, so as to solve the problems of low work efficiency and high scrap rate when manually assembling the steering column tube sub-assembly.

[0004] The technical solution of this invention is:

[0005] A machine tool for assembling a steering column sub-assembly includes a frame, an indexing turntable, workpiece fixtures, a bearing assembly mechanism, a dust cover assembly mechanism, a spline shaft assembly mechanism, a sliding force tester, and a positioning ring assembly mechanism. The machine tool is characterized by: an indexing turntable mounted on the frame; eight sets of workpiece fixtures evenly mounted on the indexing turntable; and the bearing assembly mechanism, dust cover assembly mechanism, spline shaft assembly mechanism, sliding force tester, and positioning ring assembly mechanism sequentially mounted on the frame around the indexing turntable; each of these mechanisms corresponds to a workpiece fixture.

[0006] The advantages of this invention are:

[0007] This steering column tube assembly machine tool has a compact structure and ingenious design; it can mechanize the assembly of the steering column tube assembly, solving the problems of low work efficiency and high scrap rate that exist when manually assembling the steering column tube assembly, and is particularly suitable for the needs of steering column tube assembly. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the isometric structure of the present invention;

[0009] Figure 2 This is a schematic diagram of the isometric structure of the present invention from another direction;

[0010] Figure 3 This is a top view of the structure of the present invention;

[0011] Figure 4 This is a schematic diagram of the structure of the frame and indexing turntable of the present invention;

[0012] Figure 5 for Figure 4 A top-view structural diagram;

[0013] Figure 6 for Figure 4 Enlarged structural diagram at point A;

[0014] Figure 7 This is a schematic diagram of the bearing assembly mechanism of the present invention;

[0015] Figure 8 This is a schematic diagram of the isometric structure of the bearing assembly mechanism of the present invention;

[0016] Figure 9 This is a top view schematic diagram of the bearing feeder of the present invention;

[0017] Figure 10 for Figure 9 Schematic diagram of the structure in the middle BB direction;

[0018] Figure 11 for Figure 9 Schematic diagram of the CC-axis structure;

[0019] Figure 12 A schematic diagram of the structure of the bearing feeder for the invention;

[0020] Figure 13 This is a schematic diagram of the dust cover assembly mechanism of the present invention;

[0021] Figure 14 This is a schematic diagram of the inner ring assembler of the present invention;

[0022] Figure 15 A schematic diagram of the invention's lifting cylinder, rotating cylinder, and inner ring pressure head;

[0023] Figure 16 for Figure 15 Enlarged structural diagram at point D;

[0024] Figure 17 This is a schematic diagram of the outer ring assembler of the present invention;

[0025] Figure 18 This is a schematic diagram of the lifting cylinder, rotating cylinder, and outer ring gripper cylinder of the present invention;

[0026] Figure 19 This is a schematic diagram of the spline shaft assembly mechanism of the present invention;

[0027] Figure 20This is a schematic diagram of the isometric structure of the spline shaft assembly mechanism of the present invention;

[0028] Figure 21 This is a schematic diagram of the spline shaft flipper of the present invention;

[0029] Figure 22 This is a schematic diagram of the spline shaft flipper of the present invention;

[0030] Figure 23 This is a schematic diagram of the structure of the tubular phase aligner of the present invention;

[0031] Figure 24 This is a schematic diagram of the spline shaft phase aligner of the present invention;

[0032] Figure 25 This is a schematic diagram of the spline shaft phase aligner of the present invention;

[0033] Figure 26 This is a schematic diagram of the alignment camera of the present invention;

[0034] Figure 27 This is a schematic diagram of the sliding force tester and indexing turntable of the present invention;

[0035] Figure 28 This is a schematic diagram of the push cylinder and limiting pressure plate of the sliding force tester of the present invention;

[0036] Figure 29 This is a schematic diagram of the lifting cylinder and limiting cylinder of the sliding force tester of the present invention;

[0037] Figure 30 for Figure 29 A schematic diagram of the cross-sectional structure;

[0038] Figure 31 for Figure 29 Enlarged structural diagram at point E;

[0039] Figure 32 for Figure 30 Enlarged structural diagram at point F;

[0040] Figure 33 This is a schematic diagram of the positioning ring assembly mechanism of the present invention;

[0041] Figure 34 This is a schematic diagram of the structure of the transfer press device of the present invention;

[0042] Figure 35 This is a partial structural schematic diagram of the transfer press device of the present invention;

[0043] Figure 36 for Figure 35 A magnified structural diagram at point G;

[0044] Figure 37 This is a schematic diagram of the structure of the feeder of the present invention;

[0045] Figure 38 This is a schematic diagram of the lifting cylinder, auxiliary cylinder, and clamping cylinder in the feeder of the present invention;

[0046] Figure 39 This is a schematic diagram of the lifting assembler and the spacer phase aligner of the present invention;

[0047] Figure 40 This is a schematic diagram of the lifting assembler of the present invention;

[0048] Figure 41 This is a schematic diagram of the phase aligner of the present invention.

[0049] Figure 42 for Figure 41 A schematic diagram of the cross-sectional structure;

[0050] Figure 43 for Figure 40 A magnified structural diagram at point H;

[0051] Figure 44 for Figure 41 Enlarged structural diagram at point I;

[0052] Figure 45 for Figure 42 A magnified structural diagram of point J in the middle.

[0053] In the diagram: 1. Frame; 2. Indexing turntable; 3. Workpiece fixture; 4. Bearing assembly mechanism; 5. Dust cover assembly mechanism; 6. Splined shaft assembly mechanism; 7. Sliding force tester; 8. Positioning ring assembly mechanism; 9. Floating plate; 10. Buffer spring; 11. Main positioning sleeve; 12. Secondary positioning sleeve; 13. Limiting plate; 14. Bearing feeder; 15. Bearing press; 16. Support column; 17. Feeding seat; 18. Material cylinder; 19. Cylinder; 20. Spacer plate; 21. Discharge hole; 22. Pusher plate; 3. Guide cylinder; 24. Guide plate; 25. Guide trough; 26. Feeding plate; 27. Outer ring assembler; 28. Inner ring assembler; 29. ​​Inner ring vibrating feed plate; 30. Lifting cylinder; 31. Rotating cylinder; 32. Inner ring pressure head; 33. Outer ring vibrating feed plate; 34. Outer ring gripper cylinder; 35. Pressure sleeve; 36. Pressure core; 37. Return spring; 38. Spline shaft phase aligner; 39. Alignment camera; 40. Tube column phase aligner; 41. Lifting cylinder; 42. Pushing cylinder; 43. Clamping gripper cylinder; 44. Gripper cylinder; 45. Lateral slide plate; 46. Lifting plate; 47. Push-pull cylinder; 48. Inner chuck; 49. Servo motor; 50. Transmission gear pair; 51. Lateral plate; 52. Inner pressure head; 53. Limiting pressure plate; 54. Limiting port; 55. Limiting cylinder; 56. Snap-fit ​​interface; 57. Snap-fit ​​gripper cylinder; 58. Feeder; 59. Spacer phase aligner; 60. Lifting assembler; 61. Transfer pressing assembler; 62. Feeding gantry; 63. Storage platform; 64. Lateral slide plate; 65. Longitudinal slide block; 66. Auxiliary cylinder; 67. Clamping cylinder; 68. Tie rod cylinder; 69. Internal clamping joint; 70. Positioning sleeve; 71. Transmission gear; 72. Photoelectric sensor; 73. Assembly cylinder; 74. Rotary gear ring; 75. Rotary cylinder; 76. Lateral movement pressure block; 77. Pressing boss; 78. Push-pull cone; 79. Assembly seat; 80. Limiting ring; 81. Clamping cylinder; 82. Clamping arc plate; 83. Lifting pin; 84. Lifting cylinder; 85. Pressing cylinder; 86. Pressing cylinder; 87. Pressing head; 88. Splined shaft flipper. Detailed Implementation

[0054] The steering column sub-assembly assembly machine tool includes a frame 1, an indexing turntable 2, a workpiece fixture 3, a bearing assembly mechanism 4, a dust cover assembly mechanism 5, a spline shaft assembly mechanism 6, a slip force tester 7, and a positioning ring assembly mechanism 8 (see the instruction manual appendix). Figure 1 , 2 and 3).

[0055] The frame 1 is equipped with an indexing turntable 2; eight sets of workpiece fixtures 3 are evenly installed on the indexing turntable 2 (see the instruction manual appendix). Figure 4 and 5 The indexing turntable 2 is an externally purchased device. During operation, the indexing turntable 2 can rotate intermittently according to a set angle.

[0056] The workpiece fixture 3 includes a floating plate 9, a buffer spring 10, a main positioning sleeve 11, a secondary positioning sleeve 12, and a limiting plate 13 (see the instruction manual appendix). Figure 6 ).

[0057] A floating plate 9 is slidably mounted on the indexing turntable 2 via a sliding pin; a buffer spring 10 is installed between the floating plate 9 and the indexing turntable 2. During operation, the floating plate 9 will move downward after being pressed, overcoming the elastic force of the buffer spring 10.

[0058] A main positioning sleeve 11 and a secondary positioning sleeve 12 are installed at intervals on the floating plate 9; the lower ends of the main positioning sleeve 11 and the secondary positioning sleeve 12 extend to the lower end of the indexing turntable 2. During operation, when the main positioning sleeve 11 and the secondary positioning sleeve 12 are compressed, they will overcome the elastic force of the buffer spring 10 and move down to contact the support column 16 below the indexing turntable 2, providing support for the main positioning sleeve 11 and the secondary positioning sleeve 12. This avoids the problem of easy deformation caused by the indexing turntable 2 providing support when the main positioning sleeve 11 and the secondary positioning sleeve 12 are under force.

[0059] A limit plate 13 is installed on the floating plate 9 on one side of the main positioning sleeve 11 (see the instruction manual appendix). Figure 6 During operation, the upper tube column of the component can be installed on the main positioning sleeve 11 by insertion, and the spline shaft of the component can be installed on the secondary positioning sleeve 12 by insertion. The limiting plate 13 can provide support and limitation for the upper tube column from the side.

[0060] Bearing assembly mechanisms 4 are sequentially installed on the frame 1 around the indexing turntable 2 (see instruction manual appendix). Figure 1 and 2 The bearing assembly mechanism 4 includes a bearing feeder 14 and a bearing presser 15 (see the instruction manual appendix). Figure 7 and 8 ).

[0061] A bearing presser 15 is mounted on the frame 1 above a set of workpiece fixtures 3 on the indexing turntable 2. The bearing presser 15 includes a presser cylinder 86 and a presser head 87; the presser head 87 is mounted on the frame 1 via the presser cylinder 86 (see the instruction manual appendix). Figure 8 The press-fit head 87 has a stepped pin structure. During operation, after it is inserted into the elastic bearing, it will drive the elastic bearing to move together through the friction between the two. When the press-fit head 87 presses the elastic bearing into the upper tube column, the friction between the elastic bearing and the upper tube column is greater than the friction between the press-fit head 87 and the elastic bearing due to the interference fit between them. Therefore, when the press-fit head 87 moves upward and resets, it will disengage from the elastic bearing and will not cause the elastic bearing to move together.

[0062] A support column 16 is installed below the indexing turntable 2 below the bearing press 15 (see the instruction manual appendix). Figure 4 The bearing feeder 14 is mounted on the frame 1 on one side of the bearing press 15 (see the instruction manual appendix). Figure 7 and 8 ).

[0063] The bearing feeder 14 includes a material cylinder 18, a partition plate 20, a feeding seat 17, a pusher plate 22, and a feeding plate 26 (see the instruction manual appendix). Figure 9 , 10 11 and 12). A feeding seat 17 is mounted on the frame 1 on one side of the indexing turntable 2; multiple material cylinders 18 are mounted side by side on the feeding seat 17 (see the instruction manual). Figure 12 The interior of the barrel 18 can be equipped with multiple elastic bearings that can be stacked.

[0064] A partition plate 20 is slidably mounted on the feed seat 17 below the feed cylinder 18 via a cylinder 19; the partition plate 20 has multiple discharge holes 21 spaced apart (see the instruction manual appendix). Figure 10 and 12 During operation, cylinder 19 drives spacer 20 to slide back and forth; when the discharge hole 21 on spacer 20 corresponds to the material cylinder 18, the elastic bearing at the bottom of the material cylinder 18 can pass through the discharge hole 21 and fall into the material seat 17 below it. When the body of spacer 20 corresponds to the material cylinder 18, spacer 20 seals the lower end of the material cylinder 18.

[0065] A pusher plate 22 is slidably mounted on the feeding seat 17 below the partition plate 20 via a cylinder 19 (see instruction manual appendix). Figure 11 and 12 During operation, the pusher plate 22 can push the elastic bearing located inside the feed seat 17 onto the guide groove 25 of the guide plate 24.

[0066] A guide plate 24 is mounted on the feeding seat 17 at one end of the pusher plate 22 via a guide cylinder 23; a guide groove 25 is provided on the guide plate 24; a feeding plate 26 is mounted on one end of the guide groove 25 via a cylinder 19 (see the instruction manual appendix). Figure 12 The purpose of arranging the guide plate 24 and guide groove 25 in this way is that, during operation, after the pusher plate 22 pushes the elastic bearing onto the guide groove 25 of the guide plate 24, the loading plate 26 can then push the elastic bearing to the end of the guide groove 25; subsequently, the guide cylinder 23 can push the guide plate 24 to move, so that the end of the guide plate 24 moves to below the bearing press 15. After the bearing press 15 removes the elastic bearing from the guide plate 24, the guide plate 24 can be reset. In this way, the spacer plate 20, pusher plate 22, guide plate 24 and loading plate 26 on the bearing feeder 14 can cooperate to transport one elastic bearing at a time, thus completing the loading of elastic bearings.

[0067] A dust cover assembly mechanism 5 is provided on one side of the bearing assembly mechanism 4 (see the instruction manual appendix). Figure 1 , 2 And 3). The dust cover assembly mechanism 5 includes an outer ring assembler 27 and an inner ring assembler 28 (see the instruction manual appendix). Figure 13 ).

[0068] The outer ring assembler 27 and the inner ring assembler 28 are mounted on the frame 1 on one side of the indexing turntable 2 (see the instruction manual appendix). Figure 13 The inner ring assembler 28 corresponds to the workpiece fixture 3, and the frame 1 below it is equipped with a support column 16 (see the instruction manual appendix). Figure 4 ).

[0069] The inner ring assembler 28 includes an inner ring vibrating feed plate 29, a lifting cylinder 30, a rotating cylinder 31, and an inner ring pressure head 32 (see the instruction manual appendix). Figure 14 , 15 and 16).

[0070] An inner ring vibrating feeder 29 is mounted on the frame 1 on one side of the indexing turntable 2. The inner ring vibrating feeder 29 is an externally purchased device. When it is working, it can transport the inner rings of the dust cover of the workpiece one by one to its conveying end, so that the inner ring pressure head 32 can grab the inner rings of the dust cover one by one at the output end of the inner ring vibrating feeder 29.

[0071] A rotary cylinder 31 is mounted on the frame 1 on one side of the inner ring vibrating feed plate 29 via a lifting cylinder 30; the rotary cylinder 31 is equipped with an inner ring pressure head 32 (see the instruction manual appendix). Figure 14 and 15 The lifting cylinder 30 and the rotating cylinder 31 can drive the inner ring pressure head 32 to grab the inner ring of the dust cover from the inner ring vibrating feeding plate 29 and assemble it on the splined shaft on the workpiece fixture 3.

[0072] The inner ring pressure head 32 includes a pressure sleeve 35 and a pressure core 36; the pressure sleeve 35 is mounted on the end of the rotary cylinder 31; the pressure core 36 is slidably mounted inside the pressure sleeve 35; the lower end of the pressure core 36 extends to the lower part of the pressure sleeve 35; the lower end of the pressure core 36 has a tapered structure; a return spring 37 is installed between the upper end of the pressure core 36 and the pressure sleeve 35 (see the attached instruction manual). Figure 16The pressure core 36 always tends to move downwards under the elastic force of the return spring 37; the pressure sleeve 35 is provided with a limiting inner flange; the pressure sleeve 35 can limit the pressure core 36 through the limiting inner flange, thereby preventing the pressure core 36 from detaching from the pressure sleeve 35. During operation, when the pressure core 36 is pressed down through the inner hole of the dust cover inner ring, the dust cover inner ring will gradually move upwards relative to the pressure core 36 along the conical surface of the pressure core 36, and finally, through an interference fit, the dust cover inner ring 6 is engaged with the circumferential surface of the lower end of the pressure core 36. With the cooperation of the lifting cylinder 30 and the rotating cylinder 31, the inner ring pressure head 32 can grip the inner ring of the dust cover by pressing down. After the inner ring pressure head 32 grips the inner ring of the dust cover, when assembling it onto the spline shaft, the pressure core 36 of the inner ring pressure head 32 needs to be aligned with the end of the spline shaft. Then, the lifting cylinder 30 drives the inner ring pressure head 32 to move down. During the downward movement of the inner ring pressure head 32, the end face of the pressure core 36 will first contact the end of the spline shaft. At this time, the spline shaft will hinder the further movement of the pressure core 36. Subsequently, the pressure sleeve 35 on the inner ring pressure head 32 will overcome the elastic force of the return spring 37 and continue to press down. During this process, the pressure sleeve 35 presses the inner ring of the dust cover down to the outer surface of the spline shaft, thus completing the assembly of the inner ring of the dust cover.

[0073] The outer ring assembler 27 includes an outer ring vibrating feed plate 33, a lifting cylinder 30, a rotating cylinder 31, and an outer ring gripper cylinder 34 (see the instruction manual appendix). Figure 17 and 18 The indexing turntable 2 is mounted on the frame 1 on one side, and the outer ring vibrating feed plate 33 is installed (see the instruction manual appendix). Figure 17 The outer ring vibrating feed plate 33 is an externally purchased device, which can output the outer ring of the dust cover in a uniform manner during operation.

[0074] A rotary cylinder 31 is mounted on the frame 1 on one side of the outer ring vibrating feed plate 33 via a lifting cylinder 30; an outer ring gripper cylinder 34 is mounted at the end of the rotary cylinder 31 (see instruction manual 18). During operation, the outer ring gripper cylinder 34, in cooperation with the lifting cylinder 30 and the rotary cylinder 31, can grab the outer ring of the dust cover from the outer ring vibrating feed plate 33 and then assemble it onto the spline shaft in an insert manner.

[0075] The dust cover assembly mechanism 5 has a splined shaft assembly mechanism 6 mounted on one side of the frame (see the instruction manual appendix). Figure 1 , 2 And 3). The spline shaft assembly mechanism 6 includes a spline shaft flipper 88, a spline shaft phase aligner 38, a column phase aligner 40, and an alignment camera 39 (see the attached instruction manual). Figure 19 and 20 ).

[0076] The indexing turntable 2 and a set of workpiece fixtures 3 are mounted on the frame 1, which is equipped with a splined shaft phase aligner 38 (see instruction manual appendix). Figure 19 and20 The spline shaft phase aligner 38 includes a push cylinder 42, a transverse sliding plate 45, a lifting plate 46, a push-pull cylinder 47, an inner chuck 48, a servo motor 49, and a transmission gear pair 50 (see the instruction manual appendix). Figure 24 and 25 ).

[0077] A transverse sliding plate 45 is slidably mounted on the frame 1 via a push cylinder 42 and a guide rail (see instruction manual appendix). Figure 24 and 25 The push cylinder 42 can push the transverse sliding plate 45 to slide back and forth laterally. A lifting plate 46 is mounted on the transverse sliding plate 45 via a lifting cylinder 30; an inner clamp 48 is mounted on the lifting plate 46 via a push-pull cylinder 47; the inner clamp 48 has a conventional structure, consistent with the clamp structure disclosed in the invention patent application with publication number CN114042948A. During operation, when the push cylinder 42 moves upward, the inner clamp 48 is in a clamped state; when the push cylinder 42 moves downward, the inner clamp 48 is in a released state. Thus, the movement of the push cylinder 42 controls the movement of the inner clamp 48.

[0078] A servo motor 49 is mounted on the lifting plate 46 on one side of the inner chuck 48; the servo motor 49 is connected to the inner chuck 48 via a transmission gear pair 50 (see the instruction manual appendix). Figure 24 When the servo motor 49 is working, it can drive the inner collet 48 to rotate synchronously through the transmission gear pair 50. Thus, when the inner collet 48 clamps the spline shaft, the servo motor 49 can drive the inner collet 48 and the spline shaft to rotate synchronously through the transmission gear pair 50; thus, the purpose of adjusting the phase angle of the spline shaft can be achieved.

[0079] The frame 1 below the splined shaft phase aligner 38 is equipped with an alignment camera 39 via a lifting cylinder 30 (see instruction manual appendix). Figure 26 The lifting cylinder 30 can drive the alignment camera 39 to move up and down.

[0080] A tube-type phase aligner 40 is mounted on one side of the frame 1 of the camera 39 (see instruction manual appendix). Figure 19 and 20 The tubing phase aligner 40 includes a pusher cylinder 42, a transverse plate 51, a servo motor 49, and a transmission gear pair 50 (see the instruction manual appendix). Figure 23 A transverse plate 51 is mounted on the frame 1 via a push cylinder 42; when the push cylinder 42 is working, it can drive the transverse plate 51 to slide back and forth.

[0081] A lifting plate 46 is mounted on the transverse plate 51 via a lifting cylinder 30; an inner pressure head 52 is mounted on the lifting plate 46 via a bearing; the bottom of the inner pressure head 52 has a conical structure; a servo motor 49 is mounted on the lifting plate 46 on one side of the inner pressure head 52; the servo motor 49 is connected to the inner pressure head 52 via a transmission gear pair 50 (see the attached instruction manual). Figure 23During operation, the internal pressure head 52 can be inserted into the lower tube column with the cooperation of the lifting cylinder 30; then, the servo motor 49 drives the internal pressure head 52 to rotate through the transmission gear pair 50, which in turn drives the lower tube column to rotate synchronously, thus achieving the purpose of adjusting the phase angle of the lower tube column.

[0082] The spline shaft flipper 88 is mounted on the frame 1 on one side of the indexing turntable 2 (see the instruction manual appendix). Figure 19 and 20 The spline shaft flipper 88 includes a lifting cylinder 30, a pushing cylinder 42, a hoisting cylinder 41, a rotating cylinder 31, and a gripper cylinder 44 (see the instruction manual appendix). Figure 21 and 22 A lifting cylinder 30 is mounted on the frame 1 on one side of the indexing turntable 2 via a lifting cylinder 41; a pushing cylinder 42 is mounted at the end of the lifting cylinder 30; and a gripper cylinder 44 is mounted at the end of the pushing cylinder 42 via a rotating cylinder 31 (see the instruction manual appendix). Figure 21 and 22 During operation, the gripper cylinder 44, in conjunction with the push cylinder 42, the lifting cylinder 30, and the rotating cylinder 31, can grip, move, and flip the splined shaft.

[0083] The splined shaft assembly mechanism 6 has a sliding force tester 7 mounted on one side of the frame (see instruction manual appendix). Figure 1 , 2 (and 3). The sliding force tester 7 includes a push cylinder 42, a limit pressure plate 53, a lifting cylinder 30, a limit cylinder 55, and a clamping claw cylinder 57 (see the instruction manual appendix). Figure 27 ).

[0084] A limit plate 53 is mounted on the frame 1 on one side of the indexing turntable 2 via a push cylinder 42; the limit plate 53 is provided with a limit port 54 (see the instruction manual appendix). Figure 28 During operation, the limiting pressure plate 53 can press the lower tube column through the limiting port 54, thereby preventing the lower tube column from deviating from the installation position during the sliding force test.

[0085] A limit cylinder 55 is mounted on the frame 1 above the indexing turntable 2 via a lifting cylinder 30 and a tension / compression sensor; symmetrical locking interfaces 56 are arranged on the circumference of the limit cylinder 55; a locking gripper cylinder 57 is mounted on one side of the limit cylinder 55; the grippers of the locking gripper cylinder 57 correspond to the locking interfaces 56 and are intermittently inserted and connected (see the instruction manual appendix). Figure 29 , 30 (and 31). During operation, after the limiting cylinder 55 is plugged into the spline shaft, when the clamping jaw cylinder 57 clamps, it can clamp the spline shaft by inserting its jaws into the inside of the limiting cylinder 55; when the clamping jaw cylinder 57 is released, it can disengage from the spline shaft; thus, after the clamping jaw cylinder 57 clamps, it can drive the spline shaft to move, thereby achieving the purpose of testing the sliding force of the spline shaft with the cooperation of the tension and pressure sensor.

[0086] The slip force tester 7 has a positioning ring assembly mechanism 8 mounted on one side of the frame (see instruction manual). Figure 1 , 2 And 3). The positioning ring assembly mechanism 8 includes a lifting assembler 60, a feeder 58, a spacer phase aligner 59, and a transfer press 61 (see the instruction manual appendix). Figure 33 ).

[0087] The indexing turntable 2 is equipped with a feeder 58 on one side; the feeder 58 includes a feeding gantry 62, a storage platform 63, a transverse slide plate 64, a longitudinal sliding block 65, a lifting cylinder 30, an auxiliary cylinder 66, and a clamping cylinder 67 (see the instruction manual appendix). Figure 37 ).

[0088] A loading truss 62 is provided on one side of the indexing turntable 2; the loading truss 62 contains a storage platform 63 (see the instruction manual). Figure 33 The storage platform 63 is equipped with multiple positioning rings and spacers via insert mounting (see the instruction manual appendix). Figure 33 ).

[0089] The upper end of the feeding truss 62 is equipped with a transverse slide plate 64 via a slide rail and a rodless cylinder; the transverse slide plate 64 is equipped with a longitudinal sliding block 65 via a rodless cylinder and a slide rail (see the instruction manual appendix). Figure 37 The rodless cylinder can drive the transverse slide plate 64 to slide laterally on the loading gantry 62, and can drive the longitudinal slide block 65 to move longitudinally on the transverse slide plate 64.

[0090] An auxiliary cylinder 66 is mounted on the longitudinal slide block 65 via a lifting cylinder 30; a clamping cylinder 67 is mounted on the end of the auxiliary cylinder 66 via a rotating cylinder 31. The lifting cylinder 30 and the auxiliary cylinder 66 can drive the clamping cylinder 67 to move up and down. In this operation, the clamping cylinder 67 can clamp and place the positioning ring and spacer with the cooperation of the transverse slide block 64 and the longitudinal slide block 65.

[0091] The frame 1 between the feeder 58 and the indexing turntable 2 is equipped with a spacer phase aligner 59 and a lifting assembler 60 (see the instruction manual appendix). Figure 33 The spacer phase aligner 59 includes a lifting cylinder 30, a lifting plate 46, a photoelectric sensor 72, a servo motor 49, a lever cylinder 68, and an internal locking connector 69 (see the instruction manual appendix). Figure 41 and 42 ).

[0092] A lifting plate 46 is mounted on the frame 1 via a lifting cylinder 30; an internal locking connector 69 is mounted on the lifting plate 46 via a lever cylinder 68 (see instruction manual appendix). Figure 41 and 42A transmission gear 71 is mounted on the lifting plate 46 on one side of the inner clamp connector 69 via a servo motor 49; the transmission gear 71 is engaged with the inner clamp connector 69.

[0093] The internal clamping connector 69 includes an assembly cylinder 73, a rotating gear ring 74, a rotating cylinder 75, a push-pull rod, a push-pull cone 78, and a transverse pressure block 76 (see the instruction manual appendix). Figure 45 ).

[0094] The bottom end of the lifting plate 46 in the spacer phase aligner 59 is equipped with an assembly cylinder 73; the lower end of the assembly cylinder 73 is equipped with a rotating gear ring 74 via a bearing; the rotating gear ring 74 meshes with the transmission gear 71 (see the instruction manual appendix). Figure 44 A rotating cylinder 75 is fixedly mounted on the lower end of the rotating gear ring 74. When the servo motor 49 drives the transmission gear 71 to rotate, the transmission gear 71 can drive the rotating cylinder 75 to rotate synchronously through the rotating gear ring 74.

[0095] Multiple transverse pressure blocks 76 are evenly arranged on the inner side of the rotating cylinder 75; each transverse pressure block 76 is provided with a pressing boss 77; the pressing boss 77 passes through the rotating cylinder 75 and extends to its outer side (see the instruction manual appendix). Figure 44 and 45 ).

[0096] The transverse pressure block 76 has a push-pull cone 78 inside; the upper end of the push-pull cone 78 is connected to the pull rod cylinder 68 via a push-pull rod; the inner surface of the transverse pressure block 76 has a conical structure; the push-pull cone 78 is connected to the transverse pressure block 76 via a groove (not shown in the attached diagram). The purpose of this arrangement of the push-pull cone 78 and the transverse pressure block 76 is that, during operation, when the pull rod cylinder 68 pulls the push-pull cone 78 upward via the push-pull rod, the push-pull cone 78 can press each transverse pressure block 76 from the inside through its conical surface and the groove (dovetail type), causing the transverse pressure block 76 to expand outward under pressure, thereby achieving the purpose of extending the clamping boss 77 outward to clamp the spacer from the inside. When the push-pull cone 78 moves downward, it pulls each transverse pressure block 76 inward through the groove on its surface, thereby achieving the purpose of retracting the clamping boss 77 inward and loosening the spacer.

[0097] A reflective photoelectric sensor 72 is mounted on one side of the inner connector 69 (see instruction manual appendix). Figure 44 During operation, after the inner clamping connector 69 clamps the spacer from the inside, the servo motor 49 drives the spacer to rotate synchronously through the transmission gear 71, the rotating gear ring 74, and the rotating cylinder 75. When the photoelectric sensor 72 detects the hole on the spacer, it indicates that the spacer has rotated to the specified angle, and then the servo motor 49 stops rotating. In this way, the purpose of adjusting the phase angle of the spacer can be achieved.

[0098] The lifting assembler 60 includes an assembly base 79, a clamping cylinder 81, a clamping arc plate 82, a limit ring 80, and a lifting pin 83 (see the instruction manual appendix). Figure 40 ).

[0099] The mounting base 79 is fitted with a limit ring 80 (see instruction manual appendix). Figure 43 The inner diameter of the limiting ring 80 is the same as the outer diameter of the workpiece positioning ring; thus, the positioning ring can be inserted into the inside of the limiting ring 80 for assembly during operation.

[0100] Two sets of clamping arc plates 82 are symmetrically mounted on the mounting seats 79 on both sides of the limiting ring 80 via clamping cylinders 81; a stepped lifting pin 83 is slidably mounted on the mounting seat 79 on the inner side of the limiting ring 80; a lifting cylinder 84 is mounted on the mounting seat 79 below the lifting pin 83; the lifting cylinder 84 is connected to the lifting pin 83 (see the instruction manual appendix). Figure 40 and 43 During operation, the positioning ring is first placed inside the limiting ring 80, and then the workpiece spacer is inserted into the lifting pin 83. After adjusting the spacer to a suitable angle using the spacer phase aligner 59, the spacer is clamped and fixed using the clamping arc plate 82. Then, the lifting pin 83 moves upward on the lifting cylinder 84. During its upward movement, the positioning ring is pressed by its own stepped surface, causing it to insert into the lower end of the spacer. This completes the assembly of the positioning ring and the spacer.

[0101] A transfer presser 61 is mounted on the frame 1 above the indexing turntable 2 on one side of the spacer phase aligner 59 (see instruction manual appendix). Figure 33 The transfer press 61 includes a clamping cylinder 85, a lifting cylinder 30, a rotating cylinder 31, a clamping cylinder 67, a positioning sleeve 70, and a clamping jaw cylinder 43 (see the instruction manual appendix). Figure 34 ).

[0102] A rotating cylinder 31 is mounted on the frame 1 via a lifting cylinder 30; a clamping cylinder 67 is mounted at the end of the rotating cylinder 31; when the clamping cylinder 67 is working, it can clamp the assembled positioning ring and spacer with the cooperation of the lifting cylinder 30 and the rotating cylinder 31, and transfer them to the top of the corresponding workpiece fixture 3, so as to facilitate the positioning sleeve 70 to press the positioning ring and spacer into the upper tube column.

[0103] A positioning sleeve 70 is mounted on one side of the clamping cylinder 67 via a clamping cylinder 85; a clamping jaw cylinder 43 is mounted on one side of the positioning sleeve 70; the jaws of the clamping jaw cylinder 43 pass through the positioning sleeve 70 and extend into its interior (see the instruction manual appendix). Figure 35 and 36 During operation, when the upper end of the positioning ring is inserted into the inside of the positioning sleeve 70, the clamping jaws of the clamping jaw cylinder 43 clamp the spacer and fix it inside the positioning sleeve 70. When the clamping jaw cylinder 43 is released, the positioning ring will detach from the positioning sleeve 70.

[0104] The workpiece fixture 3 on one side of the positioning ring assembly mechanism 8 corresponds to the spare station. Other functional mechanisms can be added to this station later. The workpiece fixture 3 on the side of the spare station corresponds to the unloading station. The unloading work of the steering column tube sub-assembly can be completed by a robot or manually at the unloading station.

[0105] When the steering column tube sub-assembly assembly machine is working, the upper tube column of the component is first installed on the main positioning sleeve 11 by inserting it on the workpiece fixture 3 on one side of the bearing assembly mechanism 4, and the spline shaft of the component is installed on the secondary positioning sleeve 12 by inserting it.

[0106] After the splined shaft and upper tube column are assembled, the indexing turntable 2 rotates at a certain angle, causing the workpiece fixture 3 for assembling the splined shaft and upper tube column to rotate until it corresponds to the bearing assembly mechanism 4 and then stops. Subsequently, the bearing feeder 14 outputs a flexible bearing; then the pressing cylinder 86 of the bearing presser 15 drives the pressing head 87 to move downward, so that the pressing head 87 squeezes and presses the flexible bearing from the inside and then drives it to move upward a certain distance; then the bearing feeder 14 resets, and the pressing cylinder 86 drives the flexible bearing through the pressing head 87 to press it into the corresponding upper tube column and then resets. In this way, the bearing assembly mechanism 4 can complete the assembly of the flexible bearing.

[0107] After the bearing assembly mechanism 4 completes the assembly of the elastic bearing, the indexing turntable 2 rotates at a certain angle so that the workpiece fixture 3, which has completed the assembly of the elastic bearing, rotates to correspond with the dust cover assembly mechanism 5, and then the indexing turntable 2 stops moving.

[0108] Subsequently, the outer ring gripper cylinder 34 in the outer ring assembler 27 of the dust cover assembly mechanism 5, with the cooperation of the lifting cylinder 30 and the rotating cylinder 31, grabs the outer ring of the dust cover from the outer ring vibrating feed plate 33, assembles it on the spline shaft in a plug-in manner, and then resets. In this way, the outer ring assembler 27 can complete the assembly of the outer ring of the dust cover.

[0109] After the outer ring assembler 27 completes the assembly of the outer ring of the dust cover, the lifting cylinder 30 and rotating cylinder 31 of the inner ring assembler 28 cooperate to align the inner ring pressure head 32 with the inner ring of the dust cover output from the inner ring vibrating feed plate 29, and then move downward to press the inner ring of the dust cover. During the pressing process of the inner ring pressure head 32, the inner ring of the dust cover will gradually move upward relative to the conical surface of the pressure core 36, and finally, the inner ring of the dust cover 6 is engaged with the circumferential surface of the lower end of the pressure core 36 by interference fit (see the instruction manual appendix). Figure 16 ).

[0110] Subsequently, the inner ring pressure head 32, in cooperation with the lifting cylinder 30 and the rotating cylinder 31, rotates to correspond with the spline shaft on the workpiece fixture 3. Then, the lifting cylinder 30 drives the inner ring pressure head 32 to move downward. During the downward movement of the inner ring pressure head 32, the end face of the pressure core 36 will first contact the end of the spline shaft. At this time, the spline shaft will hinder the further movement of the pressure core 36. Then, the pressure sleeve 35 on the inner ring pressure head 32 will overcome the elastic force of the return spring 37 and continue to press down. During this process, the pressure sleeve 35 presses the inner ring of the dust cover down to the outer surface of the spline shaft, thus completing the assembly of the inner ring of the dust cover. Then, the inner ring assembler 28 resets. At this point, the dust cover assembly mechanism 5 has completed the assembly of the outer ring and the inner ring of the dust cover.

[0111] After the dust cover assembly mechanism 5 completes the assembly of the outer ring and inner ring of the dust cover, the indexing turntable 2 rotates at a certain angle so that the workpiece fixture 3, which has completed the assembly of the outer ring and inner ring of the dust cover, rotates to correspond with the spline shaft assembly mechanism 6, and then the indexing turntable 2 stops moving.

[0112] When the spline shaft assembly mechanism 6 aligns with the workpiece fixture 3 that has completed the assembly of the outer and inner rings of the dust cover, the lifting cylinder 30 drives the alignment camera 39 to move down and align with the upper tube column. Subsequently, the push cylinder 42 and the lifting cylinder 30 of the tube column phase aligner 40 work together to insert the inner pressure head 52 into the lower tube column; then, the servo motor 49 drives the inner pressure head 52 to rotate through the transmission gear pair 50. During this process, the inner pressure head 52 drives the lower tube column to rotate synchronously. During the rotation of the lower tube column, the alignment camera 39 monitors the surface of the lower tube column. When the phase line on the surface of the lower tube column enters the field of view of the alignment camera 39, the inner pressure head 52 stops rotating and resets. At this point, the tube column phase aligner 40 has completed the phase alignment work of the lower tube column.

[0113] Subsequently, the gripper cylinder 44 on the spline shaft flipper 88, in cooperation with the push cylinder 42, the lifting cylinder 30, and the rotating cylinder 31, clamps and removes the spline shaft from the workpiece fixture 3, then rotates it 180°. The spline shaft flipper 88 then inserts the 180° rotated spline shaft into the inner chuck 48 of the spline shaft phase aligner 38. After the inner chuck 48 clamps and fixes the spline shaft, the spline shaft flipper 88 resets.

[0114] After the spline shaft flipper 88 resets, the push cylinder 42 of the spline shaft phase aligner 38 moves the spline shaft, which holds the inner collet 48, above the upper tube column. Then, the lifting cylinder 30 moves the alignment camera 39 upwards to align with the spline shaft. Subsequently, the servo motor 49 drives the inner collet 48 and the spline shaft to rotate synchronously via the transmission gear pair 50. During the rotation of the spline shaft, when the phase line on the surface of the spline shaft enters the field of view of the alignment camera 39, the inner collet 48 stops rotating. Then, the lifting cylinder 30 of the spline shaft phase aligner 38 pushes the inner collet 48 and the spline shaft downwards, inserting the spline shaft into the corresponding upper tube column. The spline shaft phase aligner 38 then releases the spline shaft and resets. At this point, the spline shaft assembly mechanism 6 has completed the work of installing the spline shaft into the upper tube column.

[0115] After the spline shaft assembly mechanism 6 completes the work of installing the spline shaft into the upper tube column, the indexing turntable 2 rotates at a certain angle so that the workpiece fixture 3, which has completed the spline shaft assembly, rotates to correspond with the sliding force tester 7, and then stops.

[0116] When the sliding force tester 7 corresponds to the workpiece fixture 3 after the spline shaft assembly is completed, the push cylinder 42 on the sliding force tester 7 pushes the limiting pressure plate 53 to move above the upper tube column, and keeps the limiting port 54 in sliding connection with the spline shaft.

[0117] Subsequently, the lifting cylinder 30 moves the limiting cylinder 55 downwards to engage with the spline shaft and then stops. The clamping jaw cylinder 57 then clamps and secures the spline shaft. The lifting cylinder 30 then pulls the spline shaft upwards a certain distance via the limiting cylinder 55 and the clamping jaw cylinder 57, before moving it downwards to its original position. During this process, the tension and compression sensors on the sliding force tester 7 detect the sliding force of the spline shaft. After the spline shaft returns to its original position, the clamping jaw cylinder 57 releases the spline shaft, and the lifting cylinder 30 moves it back to its original position. Thus, the sliding force tester 7 completes the test of the spline shaft's sliding force. After the spline shaft sliding force test is completed, if the sliding force is qualified, the subsequent components of the steering column tube sub-assembly assembly machine will operate normally to complete the assembly of the subsequent positioning rings and spacers. If the sliding force is unqualified, the subsequent positioning ring assembly mechanism 8 will not operate and will be transferred with the workpiece fixture 3 to the final unloading station as scrap for recycling.

[0118] After the sliding force tester 7 completes the test of the sliding force of the spline shaft, the indexing turntable 2 rotates at a certain angle so that the workpiece fixture 3, which has completed the test of the sliding force of the spline shaft, rotates to correspond with the positioning ring assembly mechanism 8, and then the indexing turntable 2 stops moving.

[0119] When the positioning ring assembly mechanism 8 aligns with the upper tube column and spline shaft with qualified sliding force, the clamping cylinder 67 of the feeder 58, in cooperation with the transverse slide plate 64, longitudinal slide block 65, lifting cylinder 30, and auxiliary cylinder 66, clamps the positioning ring from the storage platform 63 and places it inside the limiting ring 80 of the lifting assembler 60. Subsequently, the clamping cylinder 67 of the feeder 58, in cooperation with the transverse slide plate 64, longitudinal slide block 65, and lifting cylinder 30, clamps the spacer from the storage platform 63 and places it on the lifting pin 83 of the lifting assembler 60 before resetting.

[0120] After the above process is completed, the lifting cylinder 30 of the spacer phase aligner 59 will drive the inner clamping connector 69 to move down and clamp the spacer. Then, the servo motor 49 drives the spacer to rotate synchronously through the transmission gear 71, the rotating gear ring 74 and the rotating cylinder 75. When the photoelectric sensor 72 detects the hole on the spacer, it means that the spacer has rotated to the specified angle. Then the servo motor 49 stops rotating, thus achieving the purpose of rotating the spacer to the appropriate angle. After the spacer rotates to the appropriate angle, the clamping cylinder 81 actuates to clamp and fix the spacer through the clamping arc plate 82. Then, the lifting pin 83 moves up in the lifting cylinder 84. During its upward movement, it squeezes the positioning ring through its stepped surface, causing it to insert into the lower end of the spacer. This completes the assembly of the positioning ring and the spacer.

[0121] After the positioning ring and spacer are assembled, the clamping arc plate 82 resets; the inner clamping connector 69 releases the spacer and resets. Then, the clamping cylinder 67 on the transfer press-fitter 61, in cooperation with the lifting cylinder 30 and the rotating cylinder 31, clamps the spacer from the lifting assembler 60 and inserts one end into the positioning sleeve 70. When the clamping jaw cylinder 43 clamps, it secures one end of the spacer inside the positioning sleeve 70. Then, the lifting cylinder 30 and the rotating cylinder 31 drive the clamping cylinder 67 to reset. Afterwards, the clamping cylinder 85, through the positioning sleeve 70, moves the spacer and positioning ring downwards and presses them into the upper tube column where the spline shaft is installed. Then, the clamping jaw cylinder 43 releases and resets. Thus, the positioning ring assembly mechanism 8 completes the assembly of the spacer and positioning ring, and the entire assembly of the upper steering column tube sub-assembly is completed on the machine tool. The assembled upper column tube sub-assembly then rotates together with the indexing turntable 2. After it moves to the unloading station, the upper column tube sub-assembly is removed, and the rotating upper column tube sub-assembly assembly machine tool can then re-enter the next work cycle.

[0122] This steering column tube assembly machine tool has a compact structure and ingenious design; it can mechanize the assembly of the steering column tube assembly, solving the problems of low work efficiency and high scrap rate that exist when manually assembling the steering column tube assembly, and is particularly suitable for the needs of steering column tube assembly.

Claims

1. A machine tool for assembling a steering column sub-assembly, comprising a frame (1), an indexing turntable (2), a workpiece fixture (3), a bearing assembly mechanism (4), a dust cover assembly mechanism (5), a spline shaft assembly mechanism (6), a sliding force tester (7), and a positioning ring assembly mechanism (8); characterized in that: The frame (1) is equipped with an indexing turntable (2); eight sets of workpiece fixtures (3) are evenly installed on the indexing turntable (2); bearing assembly mechanism (4), dust cover assembly mechanism (5), spline shaft assembly mechanism (6), sliding force tester (7) and positioning ring assembly mechanism (8) are installed sequentially on the frame (1) around the indexing turntable (2); the bearing assembly mechanism (4), dust cover assembly mechanism (5), spline shaft assembly mechanism (6), sliding force tester (7) and positioning ring assembly mechanism (8) correspond one-to-one with the workpiece fixtures (3); The bearing assembly mechanism (4) includes a bearing feeder (14) and a bearing presser (15); the bearing presser (15) is mounted on the frame (1) above a set of workpiece fixtures (3) on the indexing turntable (2); a support column (16) is mounted below the indexing turntable (2) below the bearing presser (15); the bearing feeder (14) is mounted on the frame (1) on one side of the bearing presser (15). The bearing press-fitter (15) includes a press-fit cylinder (86) and a press-fit head (87); the press-fit head (87) is mounted on the frame (1) via the press-fit cylinder (86). The bearing feeder (14) includes a material cylinder (18), a spacer plate (20), a feeding seat (17), a pusher plate (22), and a feeding plate (26); the feeding seat (17) is mounted on the frame (1) on one side of the indexing turntable (2); multiple material cylinders (18) are mounted side by side on the feeding seat (17); the spacer plate (20) is slidably mounted on the feeding seat (17) below the material cylinders (18) via a cylinder (19); the spacer plate (20) is mounted on the feeding seat (17) below the material cylinders (18). Multiple feeding holes (21) are spaced apart on the partition plate (20); a pusher plate (22) is slidably mounted on the feeding seat (17) below the partition plate (20) via a cylinder (19); a guide plate (24) is mounted on the feeding seat (17) at one end of the pusher plate (22) via a guide cylinder (23); a guide groove (25) is provided on the guide plate (24); a feeding plate (26) is mounted on one end of the guide groove (25) via a cylinder (19).

2. The steering column sub-assembly assembly machine tool according to claim 1, characterized in that: The workpiece fixture (3) includes a floating plate (9), a buffer spring (10), a main positioning sleeve (11), a secondary positioning sleeve (12), and a limiting plate (13); the floating plate (9) is slidably mounted on the indexing turntable (2) via a sliding pin; a buffer spring (10) is installed between the floating plate (9) and the indexing turntable (2); the main positioning sleeve (11) and the secondary positioning sleeve (12) are installed on the floating plate (9) at intervals; the limiting plate (13) is installed on the floating plate (9) on one side of the main positioning sleeve (11).

3. The steering column sub-assembly assembly machine tool according to claim 2, characterized in that: The dust cover assembly mechanism (5) includes an outer ring assembler (27) and an inner ring assembler (28); the outer ring assembler (27) and the inner ring assembler (28) are mounted on the frame (1) on one side of the indexing turntable (2); the inner ring assembler (28) is mounted on the frame (1) below the workpiece fixture (3) with a support column (16); the inner ring assembler (28) includes an inner ring vibrating feed plate (29), a lifting cylinder (30), a rotating cylinder (31), and an inner ring pressure head (32); the inner ring vibrating feed plate (29) is mounted on the frame (1) on one side of the indexing turntable (2); the inner ring vibrating feed plate (29) is mounted on the frame (1) on one side of the indexing turntable (2); the inner ring vibrating feed plate (29) is mounted on the frame (1) on one side of the indexing turntable (2); the inner ring vibrating feed plate (29) is mounted on the frame (1) on one side of the indexing turntable (2). A rotating cylinder (31) is mounted on the frame (1) on one side of the feeding tray (29) via a lifting cylinder (30); an inner ring pressure head (32) is mounted on the rotating cylinder (31); the outer ring assembler (27) includes an outer ring vibrating feeding tray (33), a lifting cylinder (30), a rotating cylinder (31), and an outer ring gripper cylinder (34); an outer ring vibrating feeding tray (33) is mounted on the frame (1) on one side of the indexing turntable (2); a rotating cylinder (31) is mounted on the frame (1) on one side of the outer ring vibrating feeding tray (33) via a lifting cylinder (30); an outer ring gripper cylinder (34) is mounted at the end of the rotating cylinder (31); The inner ring pressure head (32) includes a pressure sleeve (35) and a pressure core (36); the end of the rotary cylinder (31) is equipped with a pressure sleeve (35); the pressure core (36) is slidably installed inside the pressure sleeve (35); the lower end of the pressure core (36) extends to the lower part of the pressure sleeve (35); the lower end of the pressure core (36) has a conical structure; a return spring (37) is installed between the upper end of the pressure core (36) and the pressure sleeve (35).

4. The steering column sub-assembly assembly machine tool according to claim 3, characterized in that: The spline shaft assembly mechanism (6) includes a spline shaft flipper (88), a spline shaft phase aligner (38), a column phase aligner (40), and an alignment camera (39); the spline shaft phase aligner (38) is mounted on the frame (1) above a set of workpiece fixtures (3) on the indexing turntable (2); the alignment camera (39) is mounted on one side of the frame (1) below the spline shaft phase aligner (38) via a lifting cylinder (30); the column phase aligner (40) is mounted on one side of the frame (1) next to the alignment camera (39); the spline shaft flipper (88) is mounted on one side of the frame (1) on the indexing turntable (2). The spline shaft flipper (88) includes a lifting cylinder (30), a pushing cylinder (42), a lifting cylinder (41), a rotating cylinder (31), and a gripper cylinder (44); the lifting cylinder (30) is mounted on the frame (1) on one side of the indexing turntable (2) via the lifting cylinder (41); the end of the lifting cylinder (30) is equipped with the pushing cylinder (42); the end of the pushing cylinder (42) is equipped with the gripper cylinder (44) via the rotating cylinder (31).

5. The steering column sub-assembly assembly machine tool according to claim 4, characterized in that: The spline shaft phase aligner (38) includes a push cylinder (42), a transverse sliding plate (45), a lifting plate (46), a push-pull cylinder (47), an inner clamp (48), a servo motor (49), and a transmission gear pair (50); the transverse sliding plate (45) is slidably mounted on the frame (1) via the push cylinder (42) and the guide rail; the lifting plate (46) is mounted on the transverse sliding plate (45) via the lifting cylinder (30); the inner clamp (48) is mounted on the lifting plate (46) via the push-pull cylinder (47); the servo motor (49) is mounted on the lifting plate (46) on one side of the inner clamp (48); the servo motor (49) is connected to the inner clamp (48) via the transmission gear pair (50); The tube phase aligner (40) includes a push cylinder (42), a transverse plate (51), a servo motor (49), and a transmission gear pair (50); the frame (1) is equipped with a transverse plate (51) via the push cylinder (42); a lifting plate (46) is equipped with a lifting cylinder (30) on the transverse plate (51); an inner pressure head (52) is equipped with a bearing on the lifting plate (46); a servo motor (49) is equipped with a lifting plate (46) on one side of the inner pressure head (52); the servo motor (49) is connected to the inner pressure head (52) via the transmission gear pair (50).

6. The steering upper column tube sub-assembly assembly machine tool according to claim 5, characterized in that: The sliding force tester (7) includes a push cylinder (42), a limiting pressure plate (53), a lifting cylinder (30), a limiting cylinder (55), and a clamping claw cylinder (57); the limiting pressure plate (53) is installed on the frame (1) on one side of the indexing turntable (2) via the push cylinder (42); the limiting pressure plate (53) is provided with a limiting port (54); the limiting cylinder (55) is installed on the frame (1) above the indexing turntable (2) via the lifting cylinder (30) and a tension / compression sensor; the clamping interface (56) is symmetrically arranged on the circumference of the limiting cylinder (55); the clamping claw cylinder (57) is installed on one side of the limiting cylinder (55); the clamping claw of the clamping claw cylinder (57) corresponds to the clamping interface (56) and is intermittently inserted and connected.

7. The steering upper column tube sub-assembly assembly machine tool according to claim 6, characterized in that: The positioning ring assembly mechanism (8) includes a lifting assembler (60), a feeder (58), a spacer phase aligner (59), and a transfer presser (61); the feeder (58) is mounted on one side of the indexing turntable (2); the spacer phase aligner (59) and the lifting assembler (60) are mounted on the frame (1) between the feeder (58) and the indexing turntable (2); the transfer presser (61) is mounted on the frame (1) above the indexing turntable (2) on one side of the spacer phase aligner (59). The feeder (58) includes a feed truss (62), a storage platform (63), a transverse slide plate (64), a longitudinal slide block (65), a lifting cylinder (30), an auxiliary cylinder (66), and a clamping cylinder (67); the indexing turntable (2) is provided with a feed truss (62) on one side; the feed truss (62) is equipped with a storage platform (63) inside; the upper end of the feed truss (62) is equipped with a transverse slide plate (64) through a slide rail and a rodless cylinder; the transverse slide plate (64) is equipped with a longitudinal slide block (65) through a rodless cylinder and a slide rail; the longitudinal slide block (65) is equipped with an auxiliary cylinder (66) through a lifting cylinder (30); the end of the auxiliary cylinder (66) is equipped with a clamping cylinder (67) through a rotating cylinder (31).

8. The steering upper column tube sub-assembly assembly machine tool according to claim 7, characterized in that: The phase aligner (59) includes a lifting cylinder (30), a lifting plate (46), a photoelectric sensor (72), a servo motor (49), a tie rod cylinder (68), and an inner clamping connector (69). The lifting plate (46) is mounted on the frame (1) via the lifting cylinder (30). The inner clamping connector (69) is mounted on the lifting plate (46) via the tie rod cylinder (68). A transmission gear (71) is mounted on the lifting plate (46) on one side of the inner clamping connector (69) via the servo motor (49). The transmission gear (71) meshes with the inner clamping connector (69). A photoelectric sensor (72) is mounted on one side of the inner clamping connector (69). The internal clamping connector (69) includes an assembly cylinder (73), a rotating gear ring (74), a rotating cylinder (75), a push-pull rod, a push-pull cone (78), and a transverse pressure block (76); the bottom end of the lifting plate (46) in the spacer phase aligner (59) is equipped with an assembly cylinder (73); the lower end of the assembly cylinder (73) is equipped with a rotating gear ring (74) via a bearing; the rotating gear ring (74) meshes with the transmission gear (71); the lower end of the rotating gear ring (74) is fixedly equipped with a rotating cylinder (75); Multiple transverse pressure blocks (76) are evenly arranged on the inner side of the rotating cylinder (75); a pressing boss (77) is provided on the transverse pressure block (76); the pressing boss (77) extends to the outer side after passing through the rotating cylinder (75); a push-pull cone (78) is provided inside the transverse pressure block (76); the upper end of the push-pull cone (78) is connected to the pull rod cylinder (68) through a push-pull rod; the inner side of the transverse pressure block (76) is provided with a conical structure; the push-pull cone (78) is connected to the transverse pressure block (76) through a sliding groove; The lifting assembler (60) includes an assembly base (79), a clamping cylinder (81), a clamping arc plate (82), a limiting ring (80), and a lifting pin (83); the assembly base (79) is equipped with a limiting ring (80); two sets of clamping arc plates (82) are symmetrically installed on the assembly base (79) on both sides of the limiting ring (80) through the clamping cylinder (81); a stepped lifting pin (83) is slidably installed on the assembly base (79) inside the limiting ring (80); a lifting cylinder (84) is installed on the assembly base (79) below the lifting pin (83); the lifting cylinder (84) is connected to the lifting pin (83); The transfer press (61) includes a pressing cylinder (85), a lifting cylinder (30), a rotating cylinder (31), a clamping cylinder (67), a positioning sleeve (70), and a pressing jaw cylinder (43); the frame (1) is equipped with a rotating cylinder (31) via the lifting cylinder (30); the end of the rotating cylinder (31) is equipped with a clamping cylinder (67); the clamping cylinder (67) is equipped with a positioning sleeve (70) via the pressing cylinder (85) on one side; the positioning sleeve (70) is equipped with a pressing jaw cylinder (43) on one side; the jaw of the pressing jaw cylinder (43) extends into the positioning sleeve (70) after passing through it.

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