A floating rotating device and its operation method for eliminating errors on an ultra-large turntable

Abstract

This invention discloses a floating rotation device and operating method for eliminating errors on an ultra-large turntable, belonging to the field of multi-station turntable adjustment technology. The floating rotation device for eliminating errors on an ultra-large turntable includes a lower frame mechanism, a turntable mechanism, an XZ-axis floating mechanism, a Y-axis floating fixture, a lifting and rotating mechanism, and a grounding terminal pin mechanism. This invention effectively eliminates turntable rotation and flatness errors through the coordinated operation of the XZ and Y-axis floating mechanisms, thereby effectively improving the terminal pressing alignment rate and thus effectively increasing the product qualification rate. Furthermore, the integrated lifting and rotating mechanism enables the pressing of four terminals in a single clamping operation, effectively shortening the single-station cycle time and effectively improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of multi-station turntable technology, and in particular to a floating rotation device and operating method for eliminating errors on an ultra-large turntable. Background Technology

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

[0003] The cam divider itself has rotational error, which causes a slight offset after the large turntable rotates to the designated station; in addition, the large turntable itself has insufficient machining flatness, which may cause the product to tilt when placed, affecting the terminal pressing accuracy, causing misalignment, misalignment and other phenomena, which may ultimately lead to a low product qualification rate. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a floating rotation device and operating method for eliminating errors on an ultra-large turntable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A floating rotation device for eliminating errors on an ultra-large turntable includes a lower frame mechanism, a turntable mechanism, an XZ-axis floating mechanism, a Y-axis floating fixture, a lifting and rotating mechanism, and a grounding terminal pin mechanism.

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

[0008] The turntable mechanism includes a cam divider, a large turntable, a pad, and a fixed plate. The cam divider is fixed below the worktable, and the rotating end of the cam divider extends upward and connects to the large turntable. The pad and the fixed plate are installed sequentially above the fixed end of the cam divider.

[0009] Preferably, the XZ-direction floating mechanism is installed above the large turntable. The XZ-direction floating mechanism includes an XZ-direction floating fixed base plate, an X-direction floating assembly, and a Z-direction floating assembly. The XZ-direction floating fixed base plate is fixed to the large turntable by adjusting bolts. The X-direction floating assembly includes an X-direction limiting mounting plate, an X-direction leveling bolt, an X-direction floating plate, and an X-direction spring. The X-direction limiting mounting plate is fixed below the XZ-direction floating fixed base plate. The X-direction leveling bolt passes through the X-direction limiting mounting plate and connects to the X-direction floating plate. The X-direction spring is sleeved on the X-direction leveling bolt, with its two ends respectively abutting against... The X-axis limiting mounting plate and the X-axis floating plate; the Z-axis floating assembly includes a Z-axis limiting block, a Z-axis guide rail connecting block, a Z-axis linear guide rail, an XZ-axis tooling base plate, and a Z-axis spring. The Z-axis guide rail connecting block is fixed above the X-axis floating plate, the Z-axis linear guide rail is mounted on the Z-axis guide rail connecting block, the XZ-axis tooling base plate is connected to the Z-axis linear guide rail via a slider, the Z-axis limiting block is fixed on the X-axis floating plate, and the Z-axis spring is sleeved on an internal hexagon head screw passing through the Z-axis limiting block. The two ends of the Z-axis spring abut against the Z-axis limiting block and the XZ-axis tooling base plate, respectively.

[0010] Furthermore, the Y-axis floating fixture is installed above the XZ-axis fixture base plate. The Y-axis floating fixture includes a fixture plate, a guide shaft, a linear bearing, a bearing seat, and a Y-axis spring. The fixture plate is fixed to the XZ-axis fixture base plate by pins and hinge bolts. The guide shaft is vertically fixed above the fixture plate. The linear bearing is installed below the bearing seat and sleeved on the guide shaft. The Y-axis limiting plate is fixed to the top of the guide shaft. The Y-axis spring is sleeved on the guide shaft, and its two ends abut against the Y-axis limiting plate and the bearing seat, respectively. An expansion shaft is provided above the bearing seat. The expansion shaft is connected to the bearing seat through a positioning bead. A product support block is installed at 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 fixture. The lifting and rotating mechanism includes a mounting plate, a linear guide rail, 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 rail is installed below the mounting plate. The first slider mounting plate is connected to the linear guide rail via a slider. A bearing seat mounting plate is installed at the top of the first slider mounting plate, and a cylindrical cylinder mounting plate is installed at the bottom. The cylindrical cylinder is fixed to the cylindrical cylinder mounting plate. The bearing seat mounting plate is provided with a bearing base, and an angular contact ball bearing is installed inside the bearing base. A connecting rod passes through the angular contact ball bearing, and its top end is connected to the rotating connector via a transition block. Its bottom end is connected to the output end of the reducer via a coupling. 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 fixture. 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. The linear guide rail is mounted on the front of the welding frame via a guide rail shim. The grounding terminal insertion device is fixed on the slider of the linear guide rail via a second slider mounting plate and reinforcing ribs.

[0013] Furthermore, the X-direction floating plate is connected to the XZ-direction floating fixed base plate via 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, the expansion shaft is provided with a pull head and a limiting shaft. The pull head is fixedly connected to the limiting shaft and passes through the expansion shaft. The limiting shaft is connected to the expansion shaft through a flat key and has a spring at its bottom end. The expansion shaft is provided with a top block. The top block expands or contracts by moving the pull head up and down.

[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 on an ultra-large turntable, employing the aforementioned floating rotation device for eliminating errors on an ultra-large turntable, comprises the following steps:

[0017] S1. The cam divider drives the large turntable to rotate to the designated work position. The XZ floating mechanism eliminates the X and Z offsets caused by the rotation error of the large turntable through the elastic action of the X and Z springs.

[0018] S2. The cylindrical cylinder lifts the Y-axis floating fixture by means of the connecting rod and transition block. The linear bearing moves along the guide shaft and the Y-axis spring is compressed to eliminate the Y-axis tilt caused by the flatness error of the large turntable.

[0019] S3. The servo motor drives the connecting rod to rotate through the reducer and coupling, which in turn drives the expansion shaft and the product support block to rotate, so that the products are sequentially aligned with the grounding terminal and inserted into the device.

[0020] S4. The grounding terminal insertion device moves along the linear guide rail to complete the terminal pressing;

[0021] S5. After pressing is completed, the cylindrical cylinder retracts, the Y-axis floating fixture resets, and the cam divider drives the large turntable to rotate to the next station, repeating steps S1-S4.

[0022] Preferably, in step S3, the servo motor drives the expansion shaft to rotate 90° each time to achieve sequential pressing of the four terminals that are evenly distributed around the product.

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

[0024] 1. This invention effectively eliminates turntable rotation and flatness errors through the coordinated operation of XZ and Y-axis floating mechanisms, thereby improving the terminal pressing alignment rate and thus effectively increasing the product qualification rate. Furthermore, the integrated lifting and rotating mechanism enables the pressing of 4 terminals in a single clamping operation, effectively shortening the single-station cycle time and improving production efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a floating rotation device for eliminating errors on an ultra-large turntable proposed in this invention.

[0026] Figure 2 This is a schematic diagram of the turntable mechanism in a floating rotating device for eliminating errors on an ultra-large turntable proposed in this invention.

[0027] Figure 3 This is a schematic diagram of the XZ-direction floating mechanism in a floating rotation device for eliminating errors on an ultra-large turntable proposed in this invention.

[0028] Figure 4 This is a schematic diagram of the Y-axis floating fixture in a floating rotation device for eliminating errors on an ultra-large turntable proposed in this invention.

[0029] Figure 5 This is a cross-sectional view of the Y-axis floating fixture in a floating rotary device for eliminating errors on an ultra-large turntable proposed in this invention.

[0030] Figure 6 This is a schematic diagram of the lifting and rotating mechanism in a floating rotating device for eliminating errors on an ultra-large turntable proposed in this invention.

[0031] Figure 7 This is a cross-sectional view of the lifting and rotating mechanism in a floating rotating device for eliminating errors on an ultra-large turntable proposed in this invention.

[0032] Figure 8 This is a schematic diagram of the grounding terminal pin mechanism in a floating rotation device for eliminating errors on an ultra-large turntable proposed in this invention.

[0033] Figure 9 This is a schematic diagram of the lower frame mechanism in a floating rotating device for eliminating errors on an ultra-large turntable proposed in this invention.

[0034] In the diagram: 1. Lower frame mechanism; 2. Turntable mechanism; 3. XZ-axis floating mechanism; 4. Y-axis floating fixture; 5. Lifting and rotating mechanism; 6. Grounding terminal pin mechanism; 11. Welded steel frame; 12. Workbench; 13. Foot; 21. Cam divider; 22. Extra-large turntable; 23. Pad; 24. Fixed plate; 31. XZ-axis floating fixed base plate; 32. Adjusting bolt; 33. X-axis limit mounting plate; 34. X-axis equalizing bolt; 35. X-axis floating plate; 36. X-axis spring; 37. X-axis linear guide rail; 38. Z-axis limiting block; 39. Z-axis guide rail connecting block; 391. Z-axis linear guide rail; 392. XZ-axis tooling base plate; 393. Z-axis spring; 394. Socket head cap screw; 395. Hinged bolt; 396. First locating pin; 397. Pin; 41. Tooling plate; 42. Guide shaft; 43. Linear bearing; 44. Bearing housing; 45. Y-axis limiting plate; 46. Y-axis spring; 47. Plunger mounting plate; 48. Locating ball; 49. Expansion shaft; 490. Product support block; 491. Pull head; 49 2. Limiting shaft; 493. Flat key; 494. Spring; 495. Top 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 rail; 54. First slider mounting plate; 55. Bearing seat mounting plate; 56. Reducer mounting plate; 57. Floating joint; 58. Reducer; 59. 590. Servo motor; 591. Bearing base; 592. Angular contact ball bearing; 593. Connecting rod; 594. Transition block; 595. Second locating pin; 596. Second locking nut; 597. Bearing pressure block; 598. Coupling; 599. Circular cylinder mounting plate; 590. Circular cylinder; 60. Welding frame; 61. Base plate; 62. Guide rail shim strip; 63. Linear guide rail; 64. Second slider mounting plate; 65. Reinforcing rib; 66. Mechanism mounting base plate; 67. Grounding terminal insertion device; 68. Guide rail fixing block. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Example 1:

[0037] Reference Figures 1-9 A floating rotation device for eliminating errors on an ultra-large turntable includes a lower frame mechanism 1, a turntable mechanism 2, an XZ-axis floating mechanism 3, a Y-axis floating fixture 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 feet 13. The bottom of the welded steel frame 11 is fitted with feet 13, and the top is fitted with workbench 12.

[0039] The turntable mechanism 2 includes a cam divider 21, a large turntable 22, a pad 23, and a fixed plate 24. The cam divider 21 is fixed below the worktable 12. The rotating end of the cam divider 21 extends upward and connects to the large turntable 22. The pad 23 and the fixed plate 24 are installed sequentially above the fixed end of the cam divider 21.

[0040] Reference Figure 2 , Figure 9 In specific implementation, the welded steel frame 11 is welded from Q235 steel, and the bottom foot 13 is equipped with adjustable foot bolts for equipment leveling. The workbench 12 above the welded 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 photoelectric sensors are installed on the fixed plate 24 to detect the workstation position signal.

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

[0042] Reference Figures 3-4In specific implementation, the X-direction limiting mounting plate 33 is fixed to the bottom of the XZ-direction floating fixed base plate 31 by hexagon socket bolts. The X-direction floating plate 35 is slidably connected to the XZ-direction floating fixed base plate 31 by two X-direction linear guides 37. The X-direction spring 36 is a compression spring. The Z-direction guide 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 by a slider. The Z-direction spring 393 is sleeved on the hexagon socket head cap screw 394.

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

[0044] Reference Figure 4 The tooling plate 41 is symmetrically connected with handles 4991.

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

[0046] Reference Figure 5 The bearing 497 and spacer 498 are installed in the bearing housing 44 and fixed by the end cover 499 and the first locking nut 4990 to ensure the rotational 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-axis 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 worktable 12. The linear guide rail 53 is mounted below the mounting plate 51. The first slider mounting plate 54 is connected to the linear guide rail 53 via a slider. A bearing seat mounting plate 55 is mounted at the top of the first slider mounting plate 54, and a cylindrical cylinder mounting plate 599 is mounted at the bottom. 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. The bearing seat mounting plate 55 is provided with a bearing base 590. 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. The top end is connected to the rotating connector 4994 through the transition block 593. 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 Figures 6-7 In specific implementation, the cylinder mounting plate 598 is fixed on the guide rail mounting plate 52; the first slider mounting plate 54 is connected to the linear guide rail 53 through four linear guide rail 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 Figures 6-7 The bearing base 590 fixes the outer ring of the angular contact ball bearing 591 through the bearing pressure 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-axis floating fixture 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. The guide rail pad 62 is made of aluminum alloy profile to ensure that the grounding terminal inserted into the device 67 is vertically aligned with the product support block 490. The reinforcing 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 to the second slider mounting plate 64 to prevent the mechanism from shaking during pressing; the reinforcing rib 65 is triangular to improve 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 via the 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 set in the vertical direction.

[0054] The expansion shaft 49 is provided with a pull head 491 and a limiting shaft 492. 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 through a flat key 493. A spring 494 is provided at its bottom end. A top block 495 is provided on the expansion shaft 49. The top block 495 expands or contracts by moving the pull head 491 up and down.

[0055] In practice, the limiting shaft 492 is circumferentially fixed to the expansion shaft 49 by the 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 out of the outer peripheral hole of the expansion shaft 49 by the spring force to fix the product; when the pull head 491 moves upward, the top block 495 retracts.

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

[0057] Reference Figures 1-9 In practice, the steps are as follows:

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

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

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

[0061] The cylindrical cylinder 599 is energized and extends, pushing the first slider mounting plate 54 to rise along the linear guide rail 53. 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-axis floating fixture 4 to rise. The bearing seat 44 slides along the guide shaft 42 through the linear bearing 43, compressing the Y-axis spring 46 to compensate for the Y-axis tilt caused by the flatness error of the large turntable 22. The top block 495 of the expansion shaft 49 contacts the oil pump stator, and the spring 494 is compressed to expand the top block 495, fixing the product on the product support block 490.

[0062] S3. Product rotation and terminal alignment:

[0063] The servo motor 59 starts and drives the connecting rod 592 to rotate via the reducer 58 and coupling 597. The rod rotates via the transition block 593 and the rotating connector 4994, which in turn drives the expansion shaft 49 to rotate. The expansion shaft 49 drives the limit shaft 492 and the pull head 491 to rotate synchronously via the flat key 493. 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 mounting positions evenly distributed around the circumference of the product are aligned with the grounding terminal and inserted into the device 67 in sequence.

[0064] S4. Terminal press-fitting:

[0065] The drive mechanism of the grounding terminal insertion device 67 is activated, 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-axis spring 46 provides buffering force to avoid excessive impact force during pressing and damage to the product. Meanwhile, the XZ-axis floating mechanism 3 maintains real-time compensation to ensure the verticality of the pressing.

[0066] S5. Reset and next workstation cycle:

[0067] After pressing is completed, the cylindrical cylinder 599 retracts, the Y-axis floating fixture 4 descends with the first slider mounting plate 54, the top block 495 retracts due to the spring 494 resetting, and the product is released; the cam divider 21 drives the large turntable 22 to rotate to the next station, repeating steps S1-S4 until all station operations are completed.

[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A floating rotation device for eliminating errors on an ultra-large turntable, characterized in that, It includes a lower frame mechanism (1), a turntable mechanism (2), an XZ-direction floating mechanism (3), a Y-direction floating fixture (4), a lifting and rotating mechanism (5), and a grounding terminal pin mechanism (6). The lower frame mechanism (1) includes a welded steel frame (11), a workbench (12) and a base (13). The base (13) is installed at the bottom of the welded steel frame (11) and the workbench (12) is installed at the top. The turntable mechanism (2) includes a cam divider (21), a large turntable (22), a pad (23), and a fixed plate (24). The cam divider (21) is fixed below the worktable (12). The rotating end of the cam divider (21) extends upward and connects to the large turntable (22). The pad (23) and the fixed plate (24) are installed above the fixed end of the cam divider (21) in sequence. The XZ-direction floating mechanism (3) is installed above the large turntable (22). The XZ-direction floating mechanism (3) includes an XZ-direction floating fixed base plate (31), an X-direction floating assembly, and a Z-direction floating assembly. The XZ-direction floating fixed base plate (31) is fixed to the large turntable (22) by adjusting bolts (32). The X-direction floating assembly includes an X-direction limiting mounting plate (33), an X-direction equalizing bolt (34), an X-direction floating plate (35), and an X-direction spring (36). The X-direction limiting mounting plate (33) is fixed below the XZ-direction floating fixed base plate (31). The X-direction equalizing bolt (34) passes through the X-direction limiting mounting plate (33) and is connected to the X-direction floating plate (35). The X-direction spring (36) is sleeved on the X-direction equalizing bolt (34), with its two ends abutting against the X-direction limiting mounting plate (33) and the Z-direction floating assembly, respectively. X-direction floating plate (35); The Z-direction floating assembly includes a Z-direction limiting 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 mounted 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 limiting block (38) is fixed on the X-direction floating plate (35). The Z-direction spring (393) is sleeved on an internal hexagonal head screw (394) that passes through the Z-direction limiting block (38). The two ends of the Z-direction spring (393) abut against the Z-direction limiting block (38) and the XZ-direction tooling base plate (392), respectively. The Y-axis floating fixture (4) is installed above the XZ-axis fixture base plate (392). The Y-axis floating fixture (4) includes a fixture plate (41), a guide shaft (42), a linear bearing (43), a bearing seat (44), and a Y-axis spring (46). The fixture plate (41) is fixed to the XZ-axis fixture base plate (392) by pins (397) and hinge bolts (395). The guide shaft (42) is vertically fixed above the fixture plate (41). The linear bearing (43) is installed below the bearing seat (44) and sleeved on the guide shaft (42). On the guide shaft (42), the Y-direction limiting plate (45) is fixed at 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) abut against the Y-direction limiting plate (45) and the bearing seat (44) respectively; an expansion shaft (49) is provided above the bearing seat (44), the expansion shaft (49) is connected to the bearing seat (44) through a positioning bead (48), a product support block (490) is installed at 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).

2. The floating rotation device for eliminating errors on an ultra-large turntable according to claim 1, characterized in that, The lifting and rotating mechanism (5) is located directly below the Y-axis 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 worktable (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) via a slider. A bearing seat mounting plate is installed at the top of the first slider mounting plate (54). 55), a cylindrical cylinder mounting plate (598) is installed at the bottom, and the cylindrical cylinder (599) is fixed on the cylindrical 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 connector (4994) through a transition block (593), 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).

3. The floating rotation device for eliminating errors on an ultra-large turntable according to claim 2, characterized in that, The grounding terminal pin mechanism (6) is located directly above the Y-axis floating fixture (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 a guide rail pad (62). 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).

4. The floating rotation device for eliminating errors on an ultra-large turntable according to claim 3, characterized in that, The X-direction floating plate (35) is connected to the XZ-direction floating fixed base plate (31) via the 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 set in the vertical direction.

5. The floating rotation device for eliminating errors on an ultra-large turntable according to claim 3, characterized in that, The expansion shaft (49) is provided with a pull head (491) and a limiting shaft (492). 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) through a flat key (493). A spring (494) is provided at its bottom end. A top block (495) is provided on the expansion shaft (49). The top block (495) expands or contracts by moving the pull head (491) up and down.

6. The floating rotation device for eliminating errors on an ultra-large turntable according to claim 3, characterized in that, The transition block (593) is provided with a second positioning pin (594), and the rotary connector (4994) is provided with a positioning sleeve (4992) that cooperates with the second positioning pin (594).

7. A floating rotation operation method for eliminating errors on an ultra-large turntable, employing the floating rotation device for eliminating errors on an ultra-large turntable as described in claim 5, characterized in that, The steps are as follows: S1. The cam divider (21) drives the large turntable (22) to rotate to the designated work position. The XZ floating mechanism (3) eliminates the X and Z offsets caused by the rotation error of the large turntable (22) through the elastic action of the X spring (36) and the Z spring (393). S2. The cylindrical cylinder (599) is lifted, and the Y-direction floating fixture (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 super-large turntable (22). S3. The servo motor (59) drives the connecting rod (592) to rotate through the reducer (58) and coupling (597), which in turn drives the expansion shaft (49) and product support block (490) to rotate, so that the product is aligned with the grounding terminal insertion device (67) in sequence. S4. The grounding terminal insertion device (67) moves along the linear guide rail (63) to complete the terminal pressing; S5. After pressing is completed, the cylindrical cylinder (599) retracts, the Y-axis floating fixture (4) is reset, and the cam divider (21) drives the large turntable (22) to rotate to the next station, repeating steps S1-S4.

8. The floating rotation operation method for eliminating errors on an ultra-large turntable according to claim 7, characterized in that, In step S3, the servo motor (59) drives the expansion shaft (49) to rotate 90° each time to achieve sequential pressing of the four terminals that are evenly distributed around the product.

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