Floating rotating device for eliminating error of oversized turntable and operation method

Abstract

The invention discloses a floating rotating device for eliminating errors of a super-large rotating disc and an operation method, and belongs to the technical field of multi-station rotating disc adjustment. The invention discloses a floating rotating device for eliminating errors by using an oversized turntable. The floating rotating device comprises a lower frame mechanism, a turntable mechanism, an XZ-direction floating mechanism, a Y-direction floating tool, a jacking rotating mechanism and a grounding terminal pin mechanism, through cooperative operation of the X-direction floating mechanism, the Z-direction floating mechanism and the Y-direction floating mechanism, rotation and flatness errors of the rotary table are effectively eliminated, the terminal press-fitting alignment rate is effectively increased, and then the product percent of pass is effectively increased; and the integrated jacking and rotating mechanism realizes press fitting of four terminals through single-time clamping, so that the single-station circulation time is effectively shortened, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-station turntables, and in particular to a floating rotation device for eliminating errors of an extra-large turntable and an operating method thereof. Background Art

[0002] In the field of multi-station turntable oil pump stator terminal insertion equipment, the oversized turntable driven by the cam divider has some shortcomings in operation:

[0003] The cam divider itself has rotational errors, which causes a slight offset after the oversized turntable rotates to the designated workstation. In addition, the oversized turntable itself is not sufficiently flat, which may cause the product to tilt when placed, affecting the terminal press-fitting accuracy, resulting in misalignment and deviation in press-fitting, which may ultimately lead to a low product qualification rate. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the above background technology, and to propose a floating rotation device and an operating method for eliminating errors of an extra-large turntable.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A floating rotation device for eliminating errors of an extra-large turntable, comprising a lower frame mechanism, a turntable mechanism, an XZ floating mechanism, a Y floating tooling, a lifting and rotating mechanism, and a grounding terminal pin mechanism;

[0007] The lower frame mechanism includes a welded steel frame, a workbench and feet, the feet are installed at the bottom of the welded steel frame, and the workbench is installed at the top;

[0008] The turntable mechanism includes a cam divider, an oversized turntable, a pad and a fixed disk. The cam divider is fixed under the worktable. The rotating end of the cam divider extends upward and connects to the oversized turntable. The pad and fixed disk are installed in sequence above the fixed end of the cam divider.

[0009] Preferably, the XZ floating mechanism is installed above the super-large turntable, and the XZ floating mechanism includes an XZ floating fixed base plate, an X-direction floating assembly and a Z-direction floating assembly. The XZ floating fixed base plate is fixed to the super-large turntable by adjusting bolts, and the X-direction floating assembly includes an X-direction limit mounting plate, an X-direction equal height bolt, an X-direction floating plate and an X-direction spring. The X-direction limit mounting plate is fixed below the XZ floating fixed base plate, the X-direction equal height bolt passes through the X-direction limit mounting plate and is connected to the X-direction floating plate, the X-direction spring is sleeved on the X-direction equal height bolt, and both ends respectively resist against The X-direction limit mounting plate and the X-direction floating plate; the Z-direction floating assembly includes a Z-direction limit block, a Z-direction guide rail connecting block, a Z-direction linear guide rail, an XZ-direction tooling base plate and a Z-direction spring, the Z-direction guide rail connecting block is fixed above the X-direction floating plate, the Z-direction linear guide rail is installed on the Z-direction guide rail connecting block, the XZ-direction tooling base plate is connected to the Z-direction linear guide rail through a slider, the Z-direction limit block is fixed on the X-direction floating plate, the Z-direction spring is sleeved on the hexagon socket head screw passing through the Z-direction limit block, and the two ends of the Z-direction spring respectively abut the Z-direction limit block and the XZ-direction tooling base plate.

[0010] Furthermore, the Y-direction floating tooling is installed above the XZ-direction tooling base plate, and the Y-direction floating tooling includes a tooling plate, a guide shaft, a linear bearing, a bearing seat and a Y-direction spring. The tooling plate is fixed to the XZ-direction tooling base plate by pins and movable bolts, and the guide shaft is vertically fixed above the tooling plate. The linear bearing is installed below the bearing seat and sleeved on the guide shaft. The Y-direction limit plate is fixed to the top of the guide shaft, and the Y-direction spring is sleeved on the guide shaft. The two ends of the Y-direction spring respectively rest on the Y-direction limit plate and the bearing seat; an expansion shaft is provided above the bearing seat, and the expansion shaft is connected to the bearing seat through a positioning bead. A product support block is installed on the top of the expansion shaft, and the bottom end is connected to the lifting and rotating mechanism through a rotating connector.

[0011] Furthermore, the lifting and rotating mechanism is located directly below the Y-axis floating tooling, and the lifting and rotating mechanism includes a mounting plate, a linear guide, a first slider mounting plate, a reducer, a servo motor and a cylindrical cylinder. The mounting plate is fixed below the worktable, and the linear guide is installed below the mounting plate. The first slider mounting plate is connected to the linear guide through a slider, a bearing seat mounting plate is installed on the top of the first slider mounting plate, and a cylinder mounting plate is installed on the bottom end, and the cylindrical cylinder is fixed on the cylinder mounting plate; a bearing base is provided on the bearing seat mounting plate, and an angular contact ball bearing is installed in the bearing base. The connecting rod passes through the angular contact ball bearing, and the top end is connected to the rotating connector through a transition block, and the bottom end is connected to the output end of the reducer through a coupling, and the input end of the reducer is connected to the servo motor.

[0012] Furthermore, the grounding terminal pin mechanism is located directly above the Y-axis floating tooling, and the grounding terminal pin mechanism includes a welding frame, a linear guide rail and a grounding terminal insertion device. The welding frame is fixed above the workbench, and the linear guide rail is installed on the front of the welding frame through a guide rail pad. The grounding terminal insertion device is fixed to the slider of the linear guide rail through a second slider mounting plate and a reinforcing rib.

[0013] Furthermore, the X-direction floating plate is connected to the XZ-direction floating fixed base plate through an X-direction linear guide rail, the Z-direction guide rail connecting block is fixed above the X-direction floating plate, and the Z-direction linear guide rail is arranged in the vertical direction.

[0014] Furthermore, a pull head and a limit shaft are provided in the expansion shaft, the pull head is fixedly connected to the limit shaft and passes through the expansion shaft, the limit shaft is connected to the expansion shaft through a flat key, a spring is provided at the bottom end, and a top block is provided on the expansion shaft, and the top block is expanded or contracted by the up and down movement of the pull head.

[0015] Preferably, the transition block is provided with a second positioning pin, and the rotary connector is provided with a positioning sleeve that cooperates with the second positioning pin.

[0016] A floating rotation operation method for eliminating errors of an oversized turntable is provided, which uses the floating rotation device for eliminating errors of an oversized turntable, and the steps are as follows:

[0017] S1, the cam divider drives the oversized turntable to rotate to a designated workstation, and the XZ floating mechanism eliminates the X and Z deviations caused by the rotation error of the oversized turntable through the elastic action of the X and Z springs;

[0018] S2, the cylindrical cylinder is lifted, pushing the Y-direction floating tooling to rise through the connecting rod and the transition block, the linear bearing moves along the guide shaft, and the Y-direction spring is compressed to eliminate the Y-direction tilt caused by the flatness error of the oversized turntable;

[0019] S3, the servo motor drives the connecting rod to rotate through the reducer and the coupling, driving the expansion shaft and the product support block to rotate, so that the products are aligned with the grounding terminals in sequence and inserted into the equipment;

[0020] S4, the ground terminal insertion device moves along the linear guide rail to complete the terminal press-fitting;

[0021] S5. After the press-fitting is completed, the cylindrical cylinder retracts, the Y-axis floating fixture is reset, and the cam divider drives the oversized turntable to rotate to the next station, and steps S1-S4 are repeated.

[0022] Preferably, in step S3, the servo motor drives the expansion shaft to rotate 90° each time, so as to realize the sequential press-fitting of four terminals that are evenly distributed circumferentially of the product.

[0023] Compared with the prior art, the present invention provides a floating rotation device and operating method for eliminating errors of an oversized turntable, which has the following beneficial effects:

[0024] 1. The present invention effectively eliminates turntable rotation and flatness errors through the coordinated operation of the XZ and Y floating mechanisms, effectively improving the terminal press-fit alignment rate and thus effectively improving the product qualification rate; and the integrated lifting and rotating mechanism realizes the press-fitting of four terminals in a single clamping, effectively shortening the single-station cycle time and effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a floating rotation device for eliminating errors of an extra-large turntable proposed by the present invention;

[0026] Figure 2 This is a schematic structural diagram of a turntable mechanism in a floating rotation device for eliminating errors of an extra-large turntable proposed by the present invention;

[0027] Figure 3 This is a structural diagram of the XZ floating mechanism in a floating rotation device for eliminating errors of an extra-large turntable proposed by the present invention;

[0028] Figure 4 This is a schematic structural diagram of the Y-axis floating fixture in a floating rotation device for eliminating errors of an extra-large turntable proposed by the present invention;

[0029] Figure 5 This is a cross-sectional view of the Y-axis floating fixture in the floating rotation device for eliminating errors of an extra-large turntable proposed by the present invention;

[0030] Figure 6 This is a structural diagram of the lifting and rotating mechanism in a floating rotating device for eliminating errors of an extra-large turntable proposed by the present invention;

[0031] Figure 7 This is a cross-sectional view of a lifting and rotating mechanism in a floating rotating device for eliminating errors of an extra-large turntable proposed by the present invention;

[0032] Figure 8 This is a structural diagram of a ground terminal pin mechanism in a floating rotation device for eliminating errors of an extra-large turntable proposed by the present invention;

[0033] Figure 9 This is a structural schematic diagram of the lower frame mechanism in a floating rotation device for eliminating errors of an extra-large turntable proposed by the present invention.

[0034] Figure: 1. Lower frame mechanism; 2. Turntable mechanism; 3. XZ floating mechanism; 4. Y floating fixture; 5. Lifting and rotating mechanism; 6. Grounding terminal pin mechanism; 11. Welding steel frame; 12. Work table; 13. Ground anchor; 21. Cam divider; 22. Oversized turntable; 23. Backing plate; 24. Fixed plate; 31. XZ floating fixed base plate; 32. Adjusting bolt; 33. X limit mounting plate; 34. X-axis equal height bolt; 35. X-axis floating plate; 36. X-axis spring; 37. X-axis linear guide. 38. Z-axis limit block; 39. Z-axis guide rail connection block; 391. Z-axis linear guide; 392. XZ-axis tooling base plate; 393. Z-axis spring; 394. Hexagon socket head screw; 395. Visible bolt; 396. First locating pin; 397. Pin; 41. Tooling plate; 42. Guide shaft; 43. Linear bearing; 44. Bearing seat; 45. Y-axis limit plate; 46. Y-axis spring; 47. Plunger mounting plate; 48. Locating bead; 49. Expansion shaft; 490. Product support block; 491. Pull head; 49 2. Limit shaft; 493. Flat key; 494. Spring; 495. Ejector block; 496. Sealing ring; 497. Bearing; 498. Spacer; 499. End cover; 4990. First locking nut; 4991. Handle; 4992. Positioning sleeve; 4993. Polyurethane washer; 4994. Rotary connector; 51. Mounting plate; 52. Guide rail mounting plate; 53. Linear guide; 54. First slider mounting plate; 55. Bearing seat mounting plate; 56. Reducer mounting plate; 57. Floating joint; 58. Reducer; 59. , servo motor; 590, bearing base; 591, angular contact ball bearing; 592, connecting rod; 593, transition block; 594, second locating pin; 595, second locking nut; 596, bearing pressure block; 597, coupling; 598, cylinder mounting plate; 599, cylindrical cylinder; 60, welding frame; 61, base plate; 62, guide rail spacer; 63, linear guide; 64, second slider mounting plate; 65, reinforcement rib; 66, mechanism mounting base; 67, grounding terminal insertion device; 68, guide rail fixing block. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Example 1:

[0037] Reference Figures 1-9 A floating rotation device for eliminating errors of an extra-large turntable includes a lower frame mechanism 1, a turntable mechanism 2, an XZ floating mechanism 3, a Y floating tooling 4, a lifting and rotating mechanism 5, and a grounding terminal pin mechanism 6;

[0038] The lower frame mechanism 1 includes a welded steel frame 11, a workbench 12 and a footing 13. The footing 13 is installed at the bottom of the welded steel frame 11, and the workbench 12 is installed at the top.

[0039] The turntable mechanism 2 includes a cam divider 21, an oversized turntable 22, a pad 23 and a fixed disk 24. The cam divider 21 is fixed under the workbench 12. The rotating end of the cam divider 21 extends upward and connects to the oversized turntable 22. The pad 23 and the fixed disk 24 are installed in sequence above the fixed end of the cam divider 21.

[0040] Reference Figure 2 、 Figure 9 In the specific implementation, the welding steel frame 11 is welded with Q235 steel, and the bottom foot 13 is provided with an adjustable foot bolt for equipment horizontal calibration. The workbench 12 above the welding steel frame 11 is made of cast iron, and the surface is ground to ensure installation accuracy; the pad 23 is a steel structure, and a photoelectric sensor is installed on the fixed plate 24 to detect the work station in place signal.

[0041] The XZ floating mechanism 3 is installed above the oversized turntable 22. The XZ floating mechanism 3 includes an XZ floating fixed base plate 31, an X-direction floating assembly and a Z-direction floating assembly. The XZ floating fixed base plate 31 is fixed to the oversized turntable 22 by an adjusting bolt 32. The X-direction floating assembly includes an X-direction limit mounting plate 33, an X-direction equal height bolt 34, an X-direction floating plate 35 and an X-direction spring 36. The X-direction limit mounting plate 33 is fixed below the XZ floating fixed base plate 31. The X-direction equal height bolt 34 passes through the X-direction limit mounting plate 33 and is connected to the X-direction floating plate 35. The X-direction spring 36 is sleeved on the X-direction equal height bolt 34, and its two ends respectively press against the X-direction limit mounting plate 33 and X-direction floating plate 35; the Z-direction floating assembly includes a Z-direction limit block 38, a Z-direction guide rail connecting block 39, a Z-direction linear guide 391, an XZ-direction tooling base plate 392 and a Z-direction spring 393. The Z-direction guide rail connecting block 39 is fixed above the X-direction floating plate 35. The Z-direction linear guide 391 is installed on the Z-direction guide rail connecting block 39. The XZ-direction tooling base plate 392 is connected to the Z-direction linear guide 391 through a slider. The Z-direction limit block 38 is fixed on the X-direction floating plate 35. The Z-direction spring 393 is sleeved on the hexagon socket head screw 394 passing through the Z-direction limit block 38. The two ends of the Z-direction spring 393 respectively abut the Z-direction limit block 38 and the XZ-direction tooling base plate 392.

[0042] Reference Figure 3-Figure 4In the specific implementation, the X-direction limit mounting plate 33 is fixed to the bottom of the XZ-direction floating fixed base plate 31 by a hexagon socket bolt, the X-direction floating plate 35 is slidably connected to the XZ-direction floating fixed base plate 31 through two X-direction linear guides 37, and the X-direction spring 36 is a compression spring; the Z-direction guide rail connecting block 39 is welded above the X-direction floating plate 35, the Z-direction linear guide 391 is installed vertically, the XZ-direction tooling base plate 392 is connected to the Z-direction linear guide 391 through a slider, and the Z-direction spring 393 is sleeved on the hexagon socket cylindrical head screw 394.

[0043] The Y-direction floating tooling 4 is installed above the XZ-direction tooling base plate 392. The Y-direction floating tooling 4 includes a tooling plate 41, a guide shaft 42, a linear bearing 43, a bearing seat 44 and a Y-direction spring 46. The tooling plate 41 is fixed to the XZ-direction tooling base plate 392 by a pin 397 and a movable bolt 395. A positioning pin 396 is connected to the XZ-direction tooling base plate 392. The positioning pin 396 is connected to the movable bolt 395. The guide shaft 42 is vertically fixed above the tooling plate 41. The linear bearing 43 is fixed to the XZ-direction tooling base plate 392. 3 is installed below the bearing seat 44 and sleeved on the guide shaft 42, the Y-direction limit plate 45 is fixed to the top of the guide shaft 42, the Y-direction spring 46 is sleeved on the guide shaft 42, and the two ends of the Y-direction spring 46 respectively abut against the Y-direction limit plate 45 and the bearing seat 44; an expansion shaft 49 is provided above the bearing seat 44, and the expansion shaft 49 is connected to the bearing seat 44 through a positioning bead 48. The product support block 490 is installed on the top of the expansion shaft 49, and the bottom end is connected to the lifting and rotating mechanism 5 through a rotating connector 4994.

[0044] Reference Figure 4 The tooling plate 41 is symmetrically connected to a handle 4991 .

[0045] Reference Figure 5 In specific implementation, the tooling plate 41 is fixed to the XZ-axis tooling base plate 392 by two pins 397 and a movable bolt 395; the positioning bead 48 is fixed to the plunger mounting plate 47 by a top screw, and the head is embedded in the annular groove of the expansion shaft 49 to prevent the expansion shaft 49 from moving when the turntable rotates; a sealing ring 496 is provided in the inner hole of the expansion shaft 49 to prevent foreign matter from entering when the top block 495 slides.

[0046] Reference Figure 5 The bearing 497 and the spacer 498 are installed in the bearing seat 44 and fixed by the end cover 499 and the first locking nut 4990 to ensure the rotation accuracy of the expansion shaft 49; the polyurethane washer 4993 is installed above the linear bearing 43 to adjust the Y-direction floating stroke.

[0047] The lifting and rotating mechanism 5 is located directly below the Y-direction floating tooling 4. The lifting and rotating mechanism 5 includes a mounting plate 51, a linear guide 53, a first slider mounting plate 54, a reducer 58, a servo motor 59 and a cylindrical cylinder 599. The mounting plate 51 is fixed below the workbench 12. The linear guide 53 is installed below the mounting plate 51. The first slider mounting plate 54 is connected to the linear guide 53 through a slider. The top of the first slider mounting plate 54 is installed with a bearing seat mounting plate 55, and the bottom is installed with a cylinder mounting plate 598. The cylinder 599 is fixed on the cylinder mounting plate 598; the first slider mounting plate 54 is also connected to the reducer mounting plate 56 and the floating joint 57, and the bearing seat mounting plate 55 is provided with a bearing base 590, and an angular contact ball bearing 591 is installed in the bearing base 590. The connecting rod 592 passes through the angular contact ball bearing 591, and the top end is connected to the rotating connector 4994 through the transition block 593, and the bottom end is connected to the output end of the reducer 58 through the coupling 597. The input end of the reducer 58 is connected to the servo motor 59.

[0048] Reference Figure 6-Figure 7 In specific implementation, it is fixed to the guide rail mounting plate 52 through the cylinder mounting plate 598; the first slider mounting plate 54 is connected to the linear guide rail 53 through four linear guide sliders to ensure a smooth lifting process; the transition block 593 at the top of the connecting rod 592 is provided with two second positioning pins 594, which cooperate with the positioning sleeve 4992 of the rotating connector 4994 to achieve precise docking.

[0049] Reference Figure 6-Figure 7 The bearing base 590 fixes the outer ring of the angular contact ball bearing 591 through the bearing pressing block 596, and the connecting rod 592 fixes the inner ring of the bearing through the second locking nut 595 to ensure accurate axial positioning during rotation.

[0050] The grounding terminal pin mechanism 6 is located directly above the Y-direction floating tooling 4. The grounding terminal pin mechanism 6 includes a welding frame 60, a linear guide rail 63 and a grounding terminal insertion device 67. The welding frame 60 is fixed above the workbench 12. The linear guide rail 63 is installed on the front of the welding frame 60 through the guide rail pad 62. The grounding terminal insertion device 67 is fixed on the slider of the linear guide rail 63 through the second slider mounting plate 64 and the reinforcing rib 65.

[0051] Reference Figure 8 The welding frame 60 is connected to the workbench 12 by T-bolts, and the guide rail pad 62 is made of aluminum alloy profile to ensure that the grounding terminal insertion device 67 is vertically aligned with the product support block 490; the reinforcement rib 65 is welded between the second slider mounting plate 64 and the mechanism mounting base plate 66 to improve the structural rigidity.

[0052] The guide rail fixing block 68 rigidly connects the base plate 61 and the second slider mounting plate 64 to prevent the mechanism from shaking during press-fitting; the reinforcing rib 65 is triangular and improves the torsional rigidity of the mechanism mounting base plate 66.

[0053] The X-direction floating plate 35 is connected to the XZ-direction floating fixed base plate 31 through the X-direction linear guide 37 , the Z-direction guide connection block 39 is fixed above the X-direction floating plate 35 , and the Z-direction linear guide 391 is arranged in the vertical direction.

[0054] A pull head 491 and a limit shaft 492 are provided in the expansion shaft 49. The pull head 491 is fixedly connected to the limit shaft 492 and passes through the expansion shaft 49. The limit shaft 492 is connected to the expansion shaft 49 through a flat key 493. A spring 494 is provided at the bottom end. A top block 495 is provided on the expansion shaft 49. The top block 495 expands or contracts by the up and down movement of the pull head 491.

[0055] During specific implementation, the limiting shaft 492 is circumferentially fixed to the expansion shaft 49 by a flat key 493, and the bottom spring 494 is a compression spring. When the pull head 491 moves downward, the top block 495 is pushed by the spring force to extend out of the outer hole of the expansion shaft 49 to fix the product; when the pull head 491 moves upward, the top block 495 retracts.

[0056] A second positioning pin 594 is provided on the transition block 593 , and a positioning sleeve 4992 that cooperates with the second positioning pin 594 is provided on the rotary connector 4994 .

[0057] Reference Figures 1-9 , in specific implementation, the steps are as follows:

[0058] S1. Workstation positioning and XZ error elimination:

[0059] The cam divider 21 drives the oversized turntable 22 to rotate. When it approaches the target workstation, the photoelectric sensor on the fixed disk 24 detects the workstation mark, and the cam divider 21 slows down and accurately positions itself. Due to the error of the cam divider 21 itself or the rotational inertia of the oversized turntable 22, the workstation may be offset. At this time, the XZ floating mechanism 3 is started: the X-direction floating plate 35 slides along the X-direction linear guide 37 through the elastic force of the X-direction spring 36 to compensate for the X-direction offset; the XZ-direction tooling base plate 392 slides along the Z-direction linear guide 391 through the elastic force of the Z-direction spring 393 to compensate for the Z-direction offset.

[0060] S2, Y-direction lifting and flatness error elimination:

[0061] The cylindrical cylinder 599 is energized and extended, pushing the first slider mounting plate 54 to rise along the linear guide rail 53, and the second positioning pin 594 of the transition block 593 is inserted into the positioning sleeve 4992 of the rotating connector 4994 to achieve mechanical connection; the cylinder continues to lift, driving the Y-direction floating tooling 4 to rise: the bearing seat 44 slides along the guide shaft 42 through the linear bearing 43, compressing the Y-direction spring 46 to compensate for the Y-direction tilt caused by the flatness error of the oversized turntable 22; the top block 495 of the expansion shaft 49 contacts the oil pump stator, and the spring 494 is compressed to cause the top block 495 to expand, fixing the product on the product support block 490.

[0062] S3. Product rotation and terminal alignment:

[0063] The servo motor 59 is started, driving the connecting rod 592 to rotate through the reducer 58 and the coupling 597, and driving the expansion shaft 49 to rotate through the transition block 593 and the rotating connector 4994; the expansion shaft 49 drives the limit shaft 492 and the pull head 491 to rotate synchronously through the flat key 493, and the positioning bead 48 is embedded in the groove of the expansion shaft 49 to prevent axial movement during rotation; the servo motor 59 rotates 90° each time, so that the four terminal installation positions evenly distributed around the product are aligned with the grounding terminal insertion device 67 in turn.

[0064] S4, terminal press-fit:

[0065] The driving mechanism of the grounding terminal insertion device 67 is started, pushing the terminal downward along the linear guide rail 63 and pressing it into the corresponding hole of the oil pump stator; at this time, the Y-direction spring 46 provides a buffering force to avoid excessive impact force during press-fitting and damage to the product. At the same time, the XZ-direction floating mechanism 3 maintains real-time compensation to ensure the verticality of the press-fitting.

[0066] S5, reset and next station cycle:

[0067] After the press-fitting is completed, the cylindrical cylinder 599 retracts, the Y-axis floating tooling 4 descends along with the first slider mounting plate 54, and the top block 495 contracts due to the reset of the spring 494, releasing the product; the cam divider 21 drives the oversized turntable 22 to rotate to the next station, and repeats steps S1-S4 until all station operations are completed.

[0068] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A floating rotation device for eliminating errors of an extra-large turntable, characterized in that: It comprises a lower frame mechanism (1), a turntable mechanism (2), an XZ floating mechanism (3), a Y floating tool (4), a lifting and rotating mechanism (5) and a grounding terminal pin mechanism (6); The lower frame mechanism (1) comprises a welded steel frame (11), a workbench (12) and a footing (13); the footing (13) is mounted on the bottom of the welded steel frame (11) and the workbench (12) is mounted on the top; The turntable mechanism (2) comprises a cam divider (21), an oversized turntable (22), a pad (23) and a fixed disk (24); the cam divider (21) is fixed below the workbench (12); the rotating end of the cam divider (21) extends upward and connects to the oversized turntable (22); the pad (23) and the fixed disk (24) are sequentially mounted above the fixed end of the cam divider (21).

2. The floating rotation device for eliminating errors of an extra-large turntable according to claim 1, characterized in that: The XZ floating mechanism (3) is installed above the super-large turntable (22), and the XZ floating mechanism (3) includes an XZ floating fixed base plate (31), an X-direction floating assembly and a Z-direction floating assembly. The XZ floating fixed base plate (31) is fixed to the super-large turntable (22) by adjusting bolts (32). The X-direction floating assembly includes an X-direction limit mounting plate (33), an X-direction equal height bolt (34), an X-direction floating plate (35) and an X-direction spring (36). The X-direction limit mounting plate (33) is fixed below the XZ floating fixed base plate (31), the X-direction equal height bolt (34) passes through the X-direction limit mounting plate (33) and is connected to the X-direction floating plate (35), and the X-direction spring (36) is sleeved on the X-direction equal height bolt (34), with its two ends respectively abutting against the X-direction limit mounting plate (33) and An X-direction floating plate (35); the Z-direction floating assembly comprises a Z-direction limit block (38), a Z-direction guide rail connecting block (39), a Z-direction linear guide rail (391), an XZ-direction tooling base plate (392) and a Z-direction spring (393); the Z-direction guide rail connecting block (39) is fixed above the X-direction floating plate (35); the Z-direction linear guide rail (391) is installed on the Z-direction guide rail connecting block (39); the XZ-direction tooling base plate (392) is connected to the Z-direction linear guide rail (391) via a slider; the Z-direction limit block (38) is fixed on the X-direction floating plate (35); the Z-direction spring (393) is sleeved on a hexagon socket head screw (394) passing through the Z-direction limit block (38); and the two ends of the Z-direction spring (393) respectively abut against the Z-direction limit block (38) and the XZ-direction tooling base plate (392).

3. The floating rotation device for eliminating errors of an extra-large turntable according to claim 2, characterized in that: The Y-direction floating tooling (4) is installed above the XZ-direction tooling base plate (392). The Y-direction floating tooling (4) includes a tooling plate (41), a guide shaft (42), a linear bearing (43), a bearing seat (44) and a Y-direction spring (46). The tooling plate (41) is fixed to the XZ-direction tooling base plate (392) through a pin (397) and a movable bolt (395). The guide shaft (42) is vertically fixed above the tooling plate (41). The linear bearing (43) is installed below the bearing seat (44) and is sleeved on the guide shaft (42). ), the Y-direction limit plate (45) is fixed on the top of the guide shaft (42), the Y-direction spring (46) is sleeved on the guide shaft (42), and the two ends of the Y-direction spring (46) are respectively against the Y-direction limit plate (45) and the bearing seat (44); an expansion shaft (49) is provided above the bearing seat (44), and the expansion shaft (49) is connected to the bearing seat (44) through a positioning bead (48), and a product support block (490) is installed on the top of the expansion shaft (49), and the bottom end is connected to the lifting and rotating mechanism (5) through a rotating connector (4994).

4. The floating rotation device for eliminating errors of an extra-large turntable according to claim 3 is characterized in that: The lifting and rotating mechanism (5) is located directly below the Y-direction floating fixture (4). The lifting and rotating mechanism (5) includes a mounting plate (51), a linear guide rail (53), a first slider mounting plate (54), a reducer (58), a servo motor (59) and a cylindrical cylinder (599). The mounting plate (51) is fixed below the workbench (12). The linear guide rail (53) is installed below the mounting plate (51). The first slider mounting plate (54) is connected to the linear guide rail (53) through a slider. A bearing seat mounting plate ( 55), a cylinder mounting plate (598) is installed at the bottom end, and the cylindrical cylinder (599) is fixed on the cylinder mounting plate (598); a bearing base (590) is provided on the bearing seat mounting plate (55), an angular contact ball bearing (591) is installed in the bearing base (590), a connecting rod (592) passes through the angular contact ball bearing (591), the top end is connected to the rotating connecting member (4994) through a transition block (593), and the bottom end is connected to the output end of the reducer (58) through a coupling (597), and the input end of the reducer (58) is connected to the servo motor (59).

5. The floating rotation device for eliminating errors of an extra-large turntable according to claim 4, characterized in that: The grounding terminal pin mechanism (6) is located directly above the Y-direction floating tooling (4), and the grounding terminal pin mechanism (6) includes a welding frame (60), a linear guide rail (63) and a grounding terminal insertion device (67). The welding frame (60) is fixed above the workbench (12), the linear guide rail (63) is installed on the front of the welding frame (60) through a guide rail pad (62), and the grounding terminal insertion device (67) is fixed on the slider of the linear guide rail (63) through a second slider mounting plate (64) and a reinforcing rib (65).

6. The floating rotation device for eliminating errors of an extra-large turntable according to claim 5, characterized in that: The X-direction floating plate (35) is connected to the XZ-direction floating fixed base plate (31) via an X-direction linear guide rail (37), the Z-direction guide rail connecting block (39) is fixed above the X-direction floating plate (35), and the Z-direction linear guide rail (391) is arranged in the vertical direction.

7. The floating rotation device for eliminating errors of an extra-large turntable according to claim 5, characterized in that: A pull head (491) and a limiting shaft (492) are provided in the expansion shaft (49); the pull head (491) is fixedly connected to the limiting shaft (492) and passes through the expansion shaft (49); the limiting shaft (492) is connected to the expansion shaft (49) via a flat key (493); a spring (494) is provided at the bottom end; a top block (495) is provided on the expansion shaft (49); the top block (495) is expanded or contracted by the up and down movement of the pull head (491).

8. The floating rotation device for eliminating errors of an extra-large turntable according to claim 1, characterized in that: The transition block (593) is provided with a second positioning pin (594), and the rotating connecting member (4994) is provided with a positioning sleeve (4992) that cooperates with the second positioning pin (594).

9. A floating rotation operation method for eliminating errors of an oversized turntable, using the floating rotation device for eliminating errors of an oversized turntable according to claim 7, characterized in that: Here are the steps: S1, the cam divider (21) drives the super-large turntable (22) to rotate to a designated work position, and the XZ floating mechanism (3) eliminates the X-direction and Z-direction offsets caused by the rotation error of the super-large turntable (22) through the elastic action of the X-direction spring (36) and the Z-direction spring (393); S2, the cylindrical cylinder (599) is lifted, and the Y-direction floating tooling (4) is pushed up through the connecting rod (592) and the transition block (593), the linear bearing (43) moves along the guide shaft (42), and the Y-direction spring (46) is compressed to eliminate the Y-direction tilt caused by the flatness error of the oversized turntable (22); S3, the servo motor (59) drives the connecting rod (592) to rotate through the reducer (58) and the coupling (597), thereby driving the expansion shaft (49) and the product support block (490) to rotate, so that the products are aligned with the ground terminal insertion device (67) in sequence; S4, the ground terminal insertion device (67) moves along the linear guide rail (63) to complete the terminal press-fitting; S5. After the press-fitting is completed, the cylindrical cylinder (599) retracts, the Y-direction floating fixture (4) is reset, and the cam divider (21) drives the super-large turntable (22) to rotate to the next station, and steps S1-S4 are repeated.

10. The floating rotation operation method for eliminating errors of a large turntable according to claim 9, characterized in that: In step S3, the servo motor (59) drives the expansion shaft (49) to rotate 90 degrees each time to achieve sequential press-fitting of four terminals that are evenly distributed around the circumference of the product.

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