Welding fixture for gear ring of flexible disc assembly

Abstract

The utility model discloses a welding fixture for a gear ring of a flexible disc assembly. The welding fixture comprises a working table plate, an outer edge base plate and a central positioning cylinder, the working table plate is of a plate-shaped structure, a center positioning cylinder of a cylindrical structure is fixed to the center of the working table plate, an outer edge base plate of a ring structure is concentrically arranged outside the center positioning cylinder, and the shape of the outer edge base plate needs to meet the requirement that when a tray and a gear ring are arranged on the outer edge base plate, the outer edge base plate is fixed; the outer edge base plate supports the lower surface of the outer edge of the tray and the lower surface of the gear ring on the same plane and supports the non-outer edge part of the tray at the same time; a plurality of groups of ring pressing devices used for pressing and fixing gear rings are arranged on the working table plate in a circumferential array mode, a hole site concentric with the center positioning barrel is arranged in the center of the working table plate, a first air cylinder is fixed below the hole site, and the telescopic end of the first air cylinder penetrates through the hole site and is connected with a pressing plate fixing device in the center positioning barrel. A pressing plate is concentrically limited below the pressing plate fixator, and the first air cylinder can pull the pressing plate downwards in parallel through the pressing plate fixator. The device has the beneficial effects of reducing rotation jumping of the flexible disc finished gear ring and being wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible disk manufacturing fixtures, in particular to a welding fixture for a flexible disk assembly gear ring. Background Art

[0002] The flexible disk connects the engine crankshaft and the torque converter. The flexible disk has a certain degree of rigidity and flexibility. It can absorb the impact of the torque converter on the engine by its own deformation during the torque transmission process. The patent document with publication number CN203962908U discloses a flexible disk to solve the problem that the traditional flexible disk has a complex manufacturing process, which makes the cost high, and is easy to crack during use. In addition, the distance between the transmission and the engine is close, which is prone to danger. The flexible disk comprises: a circular tray with two annular surfaces, two circular gaskets located in the center of the tray, and a circular gear ring located at the edge of the tray and meshing with the starter gear ring; the two circular gaskets comprise a first annular gasket arranged on the first annular surface of the tray contacting the engine crankshaft, and a second annular gasket arranged on the second annular surface of the tray; the first gasket and the second gasket are both provided with a plurality of first mounting holes for fixing the flexible disk on the engine crankshaft, and the first mounting holes pass through the first gasket, the tray, and the second gasket; the tray is evenly distributed with a plurality of protrusions on the circumference close to the gear ring, and each protrusion is provided with a second mounting hole for fixing the flexible disk on the torque converter on the transmission side.

[0003] When the tray and the gear ring in the above-mentioned prior art flexible disk are subjected to argon arc welding, the gear ring is easily deformed due to the heat from the argon arc welding. However, the existing tray and gear ring argon arc welding process mostly uses manual clamping. When the gear ring is deformed by heat, it is easy to cause uneven clamping due to its deformation, resulting in excessive vibration of the finished gear ring of the welded flexible disk, affecting the performance of the flexible disk. Utility Model Content

[0004] The utility model aims to provide a welding fixture for a gear ring of a flexible disc assembly to solve the problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A welding fixture for a gear ring of a flexible disk assembly comprises: a workbench, an outer edge pad, and a center positioning cylinder; the workbench is a plate-like structure, a center positioning cylinder of a cylindrical structure is fixed at the center of the workbench, and an outer edge pad of a ring structure is concentrically arranged outside the center positioning cylinder, and the shape of the outer edge pad must meet the following requirements: when a pallet and a gear ring are placed on the outer edge pad, the outer edge pad supports the lower surface of the outer edge of the pallet and the lower surface of the gear ring on the same plane, and simultaneously supports the non-outer edge part of the pallet; a plurality of groups of ring pressers for pressing and fixing the gear ring are provided in a circumferential array on the workbench, a hole position concentric with the center positioning cylinder is provided at the center position of the workbench, a first cylinder is fixed below the hole position, the telescopic end of the first cylinder penetrates the hole position and is connected to a pressure plate fixture inside the center positioning cylinder, a pressure plate is concentrically limited below the pressure plate fixture, and the first cylinder can pull the pressure plate downward in parallel through the pressure plate fixture.

[0007] Furthermore, in order to be able to press the gear ring evenly, the ring press includes: a second cylinder, a connecting beam, a fixing nut, a long rod bolt, a pressure block, a first clamping nut, and a second clamping nut; the second cylinder is fixed on the workbench with an axial circular array of the center positioning cylinder, and a pressure block for pressing the gear ring is provided above the outer edge pad. The number of pressure blocks is consistent with the number of second cylinders, and a long rod bolt is screwed on the top of each group of pressure blocks, and the long rod bolt and the second cylinder adjacent to it are connected by a connecting beam with a beam structure.

[0008] Furthermore, in order to enable the ring press to press gear rings of different thicknesses, a fixing nut is embedded in the connecting beam, the long-rod bolt is perpendicular to the connecting beam, and the long-rod bolt and the fixing nut are threadedly matched; the bolt cap of the long-rod bolt is located above the connecting beam.

[0009] Furthermore, in order to lock the pressure block and the long rod bolt after the angle of the pressure block is determined to prevent the angle deviation from affecting the pressing effect on the gear ring, the long rod bolt below the connecting beam is threaded with a first clamping nut, which is screwed upward to clamp the long rod bolt and the connecting beam, and the long rod bolt below the first clamping nut is threaded with a second clamping nut, which is screwed downward to clamp the long rod bolt and the pressure block.

[0010] In order to evenly hold the pallet, the main body of the pressure plate is a pressure holding ring plate with a ring structure, a connecting disk is fixed in the center of the pressure holding ring plate, and the main body of the pressure plate fixture is a connecting column with a rod-shaped structure, a threaded section is provided below the connecting column, and the connecting column is screwed onto the telescopic end of the first cylinder by the threaded section. A special-shaped block with a block-like structure is embedded and fixed on the connecting column, and the connecting column is located in the center of the connecting disk. The special-shaped block on the connecting column limits the upward space of the connecting disk.

[0011] Furthermore, in order to facilitate the removal of the pressure plate to facilitate the installation and removal of the pallet, the hole of the connecting column embedded in the connecting plate is a special-shaped hole, and the cross-sectional outer contour of the special-shaped hole is consistent with the cross-sectional outer contour of the special-shaped block. The cross-sectional contours of the special-shaped hole and the special-shaped block must meet the requirement that when the special-shaped block is not rotated to the point where its horizontal plane projection contour is consistent with the horizontal plane projection contour of the special-shaped hole, the special-shaped block cannot pass through the special-shaped hole.

[0012] Furthermore, in order to facilitate the rotation of the pressure plate fixer, a rotating bolt cap is fixed to the top of the connecting column.

[0013] Furthermore, in order to increase the pressing area and the evenness of the pressing of the pressing block, one side of the pressing block close to the center positioning tube is set as an inner arc surface, and the diameter of the inner arc surface is greater than or equal to the inner diameter of the gear ring.

[0014] Furthermore, in order to place the utility model as a whole on a welding platform for automated welding, a plate-shaped fixing seat is fixed under the workbench using a number of supporting columns. The fixing seat and the workbench are arranged in parallel, and the length of the supporting columns is greater than the cylinder length of the first cylinder.

[0015] In summary, the utility model has the following beneficial effects:

[0016] ① Reduce the rotational vibration of the finished gear ring of the flexible disk: Through the establishment of the ring press, the gear ring is clamped by evenly distributed ring presses, and the second cylinder is used for synchronous shortening and pressing, which ensures the uniformity of the gear ring pressing, reduces the rotational vibration of the finished gear ring of the flexible disk, and improves the performance of the flexible disk.

[0017] ② Wide application range: It can be applied to the welding of gear rings of different thicknesses through the establishment of long-rod bolts with adjustable heights and connecting columns; when it is necessary to weld gear rings of different thicknesses, the first clamping nut can be loosened, and the long-rod bolt can be rotated upward or downward, and then the pressing thickness of the pressure block under the long-rod bolt can be adjusted according to the thickness of the gear ring. After the adjustment, the first clamping nut can be re-tightened to clamp and fix the connecting beam and the long-rod bolt.

[0018] ③ Suitable for welding pallets of different thicknesses: When different pallets need to be welded, the screw bolt is rotated by a wrench to drive the threaded section on the connecting column to move up or down on the telescopic end of the first cylinder, thereby adjusting the overall height of the connecting column, and then adjusting the height of the bottom surface of the special-shaped block on the connecting column to make the pressing thickness of the special-shaped block consistent with the total thickness of the new pallet and the pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the medium pressure ring assembly of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the medium pressure plate fixer of the utility model;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the medium pressure plate of the utility model;

[0024] Figure 6 It is a schematic diagram of the top view of the structure of the medium pressure plate of the utility model.

[0025] Figure 7 for Figure 2 A magnified view of the structure in the middle.

[0026] Figure 8 Schematic diagram of the distribution of welding points on the tray and gear ring.

[0027] In the figure, 1, workbench plate; 2, outer edge pad; 3, center positioning cylinder; 4, first cylinder; 5, pressure plate holder; 6, pressure plate; 7, pressure ring; 8, fixed seat; 9, supporting column; 10, tray; 11, gear ring; 12, welding point; 51, connecting column; 52, threaded section; 53, guide cone; 54, special-shaped block; 55, rotating bolt cap; 61, holding ring plate; 62, connecting plate; 63, special-shaped hole; 71, second cylinder; 72, connecting beam; 73, fixing nut; 74, long rod bolt; 75, pressure block; 76, first clamping nut; 77, second clamping nut. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] See also Figure 1-Figure 8 , the utility model provides a technical solution:

[0030] A welding fixture for a gear ring of a flexible disk assembly, comprising: a workbench 1, an outer edge pad 2, and a center positioning cylinder 3; the workbench 1 is a plate-like structure, a center positioning cylinder 3 of a cylindrical structure is fixed at the center of the workbench 1, and an outer edge pad 2 of a ring structure is concentrically arranged outside the center positioning cylinder 3. The shape of the outer edge pad 2 must meet the following requirements: when a tray 10 and a gear ring 11 are placed on the outer edge pad 2, the outer edge pad 2 supports the lower surface of the outer edge of the tray 10 and the lower surface of the gear ring 11 in the same plane, and At the same time, the non-outer edge part of the tray 10 is supported; there are multiple groups of ring pressers 7 for pressing and fixing the gear ring 11 in a circular array on the workbench 1, and a hole concentric with the center positioning cylinder 3 is provided at the center position of the workbench 1, and a first cylinder 4 is fixed below the hole, and the telescopic end of the first cylinder 4 penetrates the hole and is connected to a pressure plate fixture 5 inside the center positioning cylinder 3, and a pressure plate 6 is concentrically limited below the pressure plate fixture 5, and the first cylinder 4 can pull the pressure plate 6 downward in parallel through the pressure plate fixture 5.

[0031] In order to evenly press the gear ring 11, the ring press 7 includes: a second cylinder 71, a connecting beam 72, a fixing nut 73, a long rod bolt 74, a pressure block 75, a first clamping nut 76, and a second clamping nut 77. The second cylinder 71 is fixed on the worktable 1 in an axial circular array of the center positioning tube 3, and a pressure block 75 for pressing the gear ring 11 is provided above the outer edge pad 2. The number of pressure blocks 75 is consistent with the number of second cylinders 71, and a long rod bolt 74 is screwed on the top of each group of pressure blocks 75. The long rod bolt 74 and the second cylinder 71 adjacent to it are connected by a connecting beam 72 with a beam structure.

[0032] In order to enable the ring press 7 to press the gear rings 11 of different thicknesses, a fixing nut 73 is embedded and fixed in the connecting beam 72, and the long rod bolt 74 is perpendicular to the connecting beam 72, and the long rod bolt 74 and the fixing nut 73 are threadedly matched; the bolt cap of the long rod bolt 74 is located above the connecting beam 72.

[0033] In order to lock the pressure block 75 and the long rod bolt 74 after the angle of the pressure block 75 is determined to prevent their angle deviation from affecting the pressing effect on the gear ring 11, the long rod bolt 74 below the connecting beam 72 is threadedly engaged with a first clamping nut 76, and the first clamping nut 76 is tightened upward to clamp the long rod bolt 74 and the connecting beam 72, and the long rod bolt 74 below the first clamping nut 76 is threadedly engaged with a second clamping nut 77, and the second clamping nut 77 is screwed downward to clamp the long rod bolt 74 and the pressure block 75.

[0034] In order to evenly hold the pallet 10, the main body of the pressure plate 6 is a holding ring plate 61 with an annular structure, and a connecting disk 62 is fixed to the center of the holding ring plate 61. The main body of the pressure plate fixture 5 is a connecting column 51 with a rod-shaped structure, and a threaded section 52 is provided below the connecting column 51. The connecting column 51 is screwed onto the telescopic end of the first cylinder 4 by the threaded section 52. A special-shaped block 54 with a block-like structure is embedded and fixed on the connecting column 51. The connecting column 51 is located at the center of the connecting disk 62, and the special-shaped block 54 on the connecting column 51 limits the upward space of the connecting disk 62.

[0035] In order to facilitate the removal of the pressing plate 6, so as to facilitate the installation and removal of the tray 10, the hole of the connecting column 51 embedded in the connecting plate 62 is a special-shaped hole 63, and the cross-sectional outer contour of the special-shaped hole 63 is consistent with the cross-sectional outer contour of the special-shaped block 54 (the outer expansion profile of the special-shaped block 54 in the utility model is not limited, and the outer contour that can be used is as follows Figure 6 As shown, it is an axially symmetrical structure with a circular middle portion and three semicircular structures evenly distributed along the circumferential direction on the edge. It can also be an equilateral triangle, rhombus, etc.). The cross-sectional profiles of the special-shaped hole 63 and the special-shaped block 54 must meet the following requirements: when the special-shaped block 54 is not rotated to the point where its horizontal plane projection profile is consistent with the horizontal plane projection profile of the special-shaped hole 63, the special-shaped block 54 cannot pass through the special-shaped hole 63.

[0036] In order to facilitate the rotation of the pressure plate holder 5 , a rotating bolt cap 55 is fixed to the top of the connecting column 51 .

[0037] In order to increase the pressing area and the evenness of the pressing block 75 , the side of the pressing block 75 close to the center positioning tube 3 is set as an inner arc surface, and the diameter of the inner arc surface is greater than or equal to the inner diameter of the gear ring 11 .

[0038] In order to place the utility model as a whole on the welding platform for automatic welding, a plate-shaped fixing seat 8 is fixed under the workbench 1 by using a plurality of supporting columns 9. The fixing seat 8 and the workbench 1 are arranged in parallel. The length of the supporting columns 9 is greater than the cylinder length of the first cylinder 4 (the workbench 1 equipped with the first cylinder 4 is inconvenient to place).

[0039] Brief description of the usage process:

[0040] When in use, an external pneumatic control mechanism is connected to all the second cylinders 71 and the first cylinder 4, and the external pneumatic control mechanism is used to control the extension of all the second cylinders 71 and the first cylinder 4. The pressing plate 6 is removed by passing the special-shaped hole 63 through the special-shaped block 54, and then the pallet 10 to be welded is concentrically embedded on the center positioning tube 3 to complete the positioning of the pallet 10 in a center positioning manner. At this time, the outer edge pad 2 supports the outer edge and non-outer edge part of the pallet 10.

[0041] The pressure plate 6 is then externally embedded on the connecting column 51 in such a way that the special-shaped hole 63 passes through the special-shaped block 54, and then the pressure plate 6 is rotated with the connecting column 51 as the axis so that the horizontal plane projection contours of the special-shaped block 54 and the special-shaped hole 63 are inconsistent, and then the external pneumatic control mechanism is used to control the first cylinder 4 to shorten. After the first cylinder 4 completes the contraction, it drives the connecting column 51 to descend, and the special-shaped block 54 on the connecting column 51 presses the pressure plate 6 downward, and then the tray 10 is pressed and fixed by the pressure plate 6.

[0042] The gear ring 11 is then embedded on the outer diameter of the tray 10, and the outer edge pad 2 is used to support the gear ring 11; then the external pneumatic control mechanism is used to control all the second cylinders 71 to shorten synchronously, and the telescopic end of the second cylinder 71 drives the long rod bolt 74 and the pressure block 75 to descend as a whole through the connecting beam 72, and then the gear ring 11 is pressed and fixed by the pressure block 75, thereby completing the relative fixation of the tray 10 and the gear ring 11.

[0043] Then, the entirety of the utility model clamping the tray 10 and the gear ring 11 can be placed on a welding platform with the fixing seat 8 as the bottom surface, and then the contact parts of the tray 10 and the gear ring 11 can be uniformly welded by a welding robot.

[0044] After welding is completed, the external pneumatic control mechanism is used to control all the second cylinders 71 and the first cylinder 4 to extend, the second cylinder 71 releases the pressure on the ring gear 11, and the first cylinder 4 releases the pressure on the pallet 10, and then the pressure plate 6 is rotated as a whole so that the horizontal plane projection contours of the special-shaped block 54 and the special-shaped hole 63 are consistent, and then the pressure plate 6 is removed in a way that the special-shaped hole 63 passes through the special-shaped block 54, and then the flexible disk assembly formed by the welded pallet 10 and ring gear 11 can be removed as a whole.

[0045] When it is necessary to weld gear rings 11 of different thicknesses, the first clamping nut 76 can be loosened, the long rod bolt 74 can be rotated upward or downward, and then the pressing thickness of the pressure block 75 below the long rod bolt 74 can be adaptively adjusted according to the thickness of the gear ring 11. After the adjustment, the first clamping nut 76 is re-tightened to clamp and fix the connecting beam 72 and the long rod bolt 74; when it is necessary to weld different pallets 10, similarly, the screw bolt 55 is rotated by a wrench to drive the threaded section 52 on the connecting column 51 to move upward or downward on the telescopic end of the first cylinder 4, thereby adjusting the overall height of the connecting column 51, and then adjusting the height of the bottom surface of the special-shaped block 54 on the connecting column 51 so that the pressing thickness of the special-shaped block 54 is consistent with the total thickness of the new pallet 10 and the pressure plate 6.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A welding fixture for a flexible disc assembly gear ring, comprising: A workbench (1), an outer edge pad (2), and a center positioning cylinder (3); characterized in that: the workbench (1) is a plate-like structure, a center positioning cylinder (3) of a cylindrical structure is fixed at the center of the workbench (1), and an outer edge pad (2) of a ring structure is concentrically arranged outside the center positioning cylinder (3), and the shape of the outer edge pad (2) must meet the following requirements: when the tray and the gear ring are placed on the outer edge pad (2), the outer edge pad (2) supports the lower surface of the outer edge of the tray (10) and the lower surface of the gear ring (11) on the same plane, and at the same time supports the tray (10) The non-outer edge portion is supported; a plurality of groups of ring pressers (7) for pressing and fixing the gear ring (11) are arranged in a circular array on the workbench (1); a hole position concentric with the center positioning cylinder (3) is arranged at the center position of the workbench (1); a first cylinder (4) is fixed below the hole position; the telescopic end of the first cylinder (4) penetrates the hole position and is connected to a pressure plate holder (5) inside the center positioning cylinder (3); a pressure plate (6) is provided concentrically limited below the pressure plate holder (5); the first cylinder (4) can pull the pressure plate (6) downward in parallel through the pressure plate holder (5).

2. The welding fixture for the gear ring of a flexible disk assembly according to claim 1, characterized in that: The ring press (7) comprises: a second cylinder (71), a connecting beam (72), a fixing nut (73), a long rod bolt (74), a pressure block (75), a first clamping nut (76), and a second clamping nut (77); the second cylinder (71) is fixed on the workbench (1) in an axial circular array of a center positioning cylinder (3), and a pressure block (75) for pressing the gear ring (11) is provided above the outer edge pad (2). The number of pressure blocks (75) is consistent with the number of second cylinders (71), and a long rod bolt (74) is screwed on the top of each group of pressure blocks (75). The long rod bolt (74) and the adjacent second cylinder (71) are connected by a connecting beam (72) of a beam structure.

3. The welding fixture for the gear ring of the flexible disk assembly according to claim 2 is characterized in that: The connection beam (72) is embedded with a fixing nut (73), the long-rod bolt (74) is perpendicular to the connection beam (72), and the long-rod bolt (74) and the fixing nut (73) are threadedly matched; the bolt cap of the long-rod bolt (74) is located above the connection beam (72).

4. The welding fixture for the gear ring of the flexible disk assembly according to claim 3 is characterized in that: The long rod bolt (74) below the connecting beam (72) is threadedly engaged with a first clamping nut (76), and the first clamping nut (76) is screwed upward to clamp and fix the long rod bolt (74) and the connecting beam (72), and the long rod bolt (74) below the first clamping nut (76) is threadedly engaged with a second clamping nut (77), and the second clamping nut (77) is screwed downward to clamp and fix the long rod bolt (74) and the pressure block (75).

5. The welding fixture for the gear ring of a flexible disk assembly according to claim 1, characterized in that: The main body of the pressure plate (6) is a pressure holding ring plate (61) with an annular structure, and a connecting disk (62) is fixed at the center of the pressure holding ring plate (61). The main body of the pressure plate fixer (5) is a connecting column (51) with a rod-shaped structure. A threaded section (52) is provided below the connecting column (51). The connecting column (51) is screwed onto the telescopic end of the first cylinder (4) by means of the threaded section (52). A special-shaped block (54) with a block-shaped structure is embedded and fixed on the connecting column (51). The connecting column (51) is located at the center of the connecting disk (62). The special-shaped block (54) on the connecting column (51) limits the upward space of the connecting disk (62).

6. The welding fixture for the gear ring of the flexible disk assembly according to claim 5, characterized in that: The hole in the connecting plate (62) through which the connecting column (51) is embedded is a special-shaped hole (63). The cross-sectional outer contour of the special-shaped hole (63) is consistent with the cross-sectional outer contour of the special-shaped block (54). The cross-sectional contours of the special-shaped hole (63) and the special-shaped block (54) must satisfy that when the special-shaped block (54) is not rotated to the point where its horizontal plane projection contour is consistent with the horizontal plane projection contour of the special-shaped hole (63), the special-shaped block (54) cannot pass through the special-shaped hole (63).

7. The welding fixture for the gear ring of the flexible disk assembly according to claim 6, characterized in that: A rotating bolt cap (55) is fixed on the top of the connecting column (51).

8. The welding fixture for the gear ring of a flexible disk assembly according to claim 2, characterized in that: The side of the pressing block (75) close to the center positioning cylinder (3) is arranged as an inner arc surface, and the diameter of the inner arc surface is greater than or equal to the inner diameter of the gear ring (11).

9. The welding fixture for the gear ring of a flexible disk assembly according to claim 1, characterized in that: A plate-shaped fixing seat (8) is fixed below the workbench (1) using a plurality of supporting columns (9); the fixing seat (8) and the workbench (1) are arranged in parallel; and the length of the supporting columns (9) is greater than the cylinder body length of the first cylinder (4).

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