A precision tooling for worm gear meshing

Abstract

This utility model discloses a precision tooling for worm gear meshing, including a support assembly for supporting the worm gear, comprising a tooling table and slide seat fixed by bolts, a lead screw and slide plate slidably connected, a pad and support block fixed by screws, and a locating pin fixed to the support block by bearings; and a center assembly for clamping the worm, comprising a fixed center seat fixed to the tooling table by screws, a first center inserted into the fixed center seat at one end, a movable center seat fixed to the tooling table by screws, and an adjusting cylinder passing through the movable center seat; the designed support assembly and center assembly can limit the worm gear and fix the worm, and can also adjust the position of the worm gear to ensure accurate meshing with the worm. The resistance plate and resistance pad press the worm gear tightly to prevent the worm gear from deflecting under the helical action during worm installation, thus avoiding inaccurate fit between the worm gear and the worm and resulting in a small contact area between the worm gear and the worm.

Description

Technical Field

[0001] This utility model belongs to the field of tooling technology, specifically relating to a precision tooling for worm gear meshing. Background Technology

[0002] In the production process of worm gear parts, they need to be assembled and connected in meshing, and then the helical transmission test of the meshing connection is carried out. The worm gear assembly uses traditional tooling, which uses pins or clamps to limit the worm gear and worm, and fixes the worm gear parts to be assembled in a preset position to prevent them from shifting, deflecting or shaking during manual operation, thus facilitating further precise assembly by manual labor.

[0003] Traditional tooling fixtures for worm gears are simple positioning and fixing devices, mainly consisting of a rotary table, a pin that limits the worm gear, and support blocks that support and limit both ends of the worm. During testing, the worm gear is fitted onto the outside of the pin, thus limiting the worm gear. The worm is supported by the support blocks, and the worm meshes with the worm gear. After rotating the worm, the worm gear rotates under the transmission action, which can test the meshing effect between the worm gear and the worm. However, this simple tooling fixture cannot fine-tune the position of the worm gear and the worm to adjust the meshing clearance between them and ensure precise meshing. This has shortcomings and needs improvement.

[0004] Existing traditional simple tooling, when used for worm gears, has the problem of not having a tooling design that facilitates the adjustment of the meshing clearance between the worm gear and the worm. To address this, this application proposes a precision tooling for worm gear meshing. Utility Model Content

[0005] The purpose of this invention is to provide a precision tooling for worm gear meshing, in order to solve the problem mentioned in the background art that the existing simple tooling does not have a tooling design that facilitates the adjustment of the meshing clearance between the worm gear and the worm.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision tooling for worm gear meshing, comprising...

[0007] The support assembly for supporting the worm gear includes a tooling table and slide seat fixed by bolts, a lead screw and slide plate slidably connected, a pad and support block fixed by screws, and a locating pin fixed to the support block by bearings.

[0008] The center assembly for clamping the worm gear includes a fixed center seat fixed to the tooling table by screws, a first center inserted into the fixed center seat at one end, a movable center seat fixed to the tooling table by screws, an adjusting cylinder passing through the movable center seat, and a second center fixedly connected to one end of the adjusting cylinder.

[0009] The pressing assembly for pressing the side of the worm gear includes a fixed base fixed to the tooling table by screws, a lifting rod pulled and connected to the fixed base, a lifting plate perpendicular to the top of the lifting rod, and a resistance plate fixedly connected to one end of the lifting plate. A clamping plate for clamping the lifting rod is welded inside one side of the fixed base, and a movable plate welded to the clamping plate passes through the top surface of one side of the fixed base.

[0010] Preferably, the fixed base includes a horizontal part and a vertical part, the lifting rod is inserted into the vertical part, the clamping plate is installed in the vertical part, and a limiting cylinder and a guide rod are provided between the lifting plate and the horizontal part for sliding connection.

[0011] Preferably, the opposing surfaces of the lifting rod are provided with recessed slots b.

[0012] Preferably, the top of the clamping plate is curved, and the curved end surface of the clamping plate is welded with protruding teeth that are embedded in the slot b.

[0013] Preferably, the movable plate passing through the top surface of the fixed base is cylindrical, and the cylindrical ends of the symmetrically distributed movable plates are distributed on both sides of the lifting plate.

[0014] Preferably, the resistance plate is arc-shaped, and a resistance pad is glued to one side surface of the resistance plate, with a grid pattern a on the surface of the resistance pad.

[0015] Preferably, the first and second centers have clamping cone tips welded to their opposing surfaces; a handwheel is fixed to one end of the lead screw that passes through the slide seat by a screw; a round rod straight handle is threadedly connected to one end of the adjusting cylinder; and an auxiliary support block is fixed to the surface of the tooling table near the fixed center seat by a screw.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this utility model, the designed support component and top component can limit and fix the worm gear and adjust the position of the worm gear so that it can accurately mesh with the worm.

[0018] 2. In this utility model, the worm wheel is pressed tightly by the designed pressing component, resistance plate and resistance pad, so as to avoid the worm wheel deflecting under the action of the helical force during the installation of the worm, which would result in inaccurate matching between the worm wheel and the worm and a small contact area between the worm wheel and the worm. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the precision tooling and the combination of worm gear and worm of this utility model;

[0020] Figure 2This is a top view schematic diagram of the precision tooling and the combination of worm gear and worm of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the precision tooling of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the slide base of this utility model;

[0023] Figure 5 For the present utility model Figure 1 Enlarged structural diagram of section C;

[0024] Figure 6 This is a side view of the fixing base of this utility model.

[0025] Figure 7 This is a three-dimensional structural diagram of the lifting plate of this utility model;

[0026] Figure 8 This is a three-dimensional structural diagram of the lifting rod of this utility model;

[0027] In the diagram: 1. Tooling table; 6. Fixed seat; 7. Lifting plate; 8. Resistance plate; 9. Auxiliary support block; 10. Movable plate; 21. Slide table seat; 22. Lead screw; 23. Slide table plate; 31. Fixed center seat; 32. First center; 41. Movable center seat; 42. Adjusting cylinder; 43. Second center; 51. Pad; 52. Support block; 53. Positioning pin; 61. Limiting cylinder; 62. Guide rod; 63. Clamping plate; 71. Lifting rod; 81. Resistance pad; 631. Protruding tooth. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 8 This utility model provides a technical solution: a precision tooling for worm gear meshing, including a support assembly for supporting the worm gear, comprising a tooling table 1 and a slide base 21 fixed by bolts, a lead screw 22 and a slide plate 23 slidably connected, a pad 51 and a support block 52 fixed by screws, and a locating pin 53 fixed to the support block 52 by a bearing. The pad 51 and the slide plate 23 are fixed by screws. Figure 1As shown, A is the worm gear, and B is the worm wheel. When installing the worm wheel B, it is sleeved on the outside of the locating pin 53. By manually operating the handwheel at the end of the lead screw 22, the slide plate 23 can be moved linearly along the axial direction of the lead screw 22, thereby changing the position of the pad 51, the support block 52, and the worm wheel B, achieving the purpose of fine-tuning the position of the worm wheel B so as to ensure precise meshing between the worm wheel B and the worm gear A. The center assembly for clamping the worm gear includes a fixed center seat 31 fixed to the tooling table 1 by screws, a first center 32 with one end inserted into the fixed center seat 31, and a communication point with the tooling table 1. The system comprises a movable center seat 41 fixed by screws, an adjusting cylinder 42 passing through the movable center seat 41, and a second center 43 fixedly connected to one end of the adjusting cylinder 42. The adjusting cylinder 42 and the movable center seat 41 are connected by a threaded connection. When the adjusting cylinder 42 rotates, it moves along its own axial direction, which can change the distance between the opposing first center 32 and second center 43. When the worm A is installed, one end of the worm A is in point contact with the first center 32, and the other end of the worm A is in point contact with the second center 43. The worm A is clamped between the first center 32 and the second center 43. Rod A makes point contact with the first tip 32 and the second tip 43, resulting in low friction and not affecting the rotation of worm A, thereby driving worm wheel B. The pressing assembly for clamping the side of worm wheel includes a fixed base 6 fixed to the tooling table 1 by screws, a lifting rod 71 pulled and connected to the fixed base 6, a lifting plate 7 perpendicular to the top of the lifting rod 71, and a resistance plate 8 fixedly connected to one end of the lifting plate 7. When worm wheel B is fixed in position, the resistance plate 8 presses down on worm wheel B, and the clamping plate 63 clamps the lifting rod 71. In addition, the protrusion 631 is embedded inside the lifting rod 71, keeping the lifting rod 71, the lifting plate 7, and the resistance plate 8 stable. The fixed base 6 is designed to press the worm wheel B firmly, preventing the worm wheel B from being deflected when the worm A is installed and engaged with it. This would result in a large meshing clearance between the worm wheel B and the worm A, preventing accurate meshing. A clamping plate 63 for holding the lifting rod 71 is welded to the inside of one side of the fixed base 6. A movable plate 10, welded to the clamping plate 63, passes through the top surface of one side of the fixed base 6. The clamping plate 63 holds the lifting rod 71. When the movable plate 10 is moved under force during manual operation, it causes the clamping plate 63 to open, allowing the protruding teeth 631 to leave the lifting rod 71, facilitating operation.

[0030] In this embodiment, the fixed base 6 includes a horizontal part and a vertical part. The lifting rod 71 is inserted into the vertical part, and the clamping plate 63 is installed in the vertical part. A limiting cylinder 61 and a guide rod 62 are provided between the lifting plate 7 and the horizontal part for sliding connection. The limiting cylinder 61 is fixed to the fixed base 6 by screw engagement, and the guide rod 62 is fixed to the end of the lifting plate 7 by screws. The limiting cylinder 61 and the guide rod 62 serve to limit the lifting plate 7 and prevent the lifting plate 7 from tilting during lifting.

[0031] In this embodiment, recessed slots b are provided on the opposite surfaces of the lifting rod 71. The top of the clamping plate 63 is curved. The curved end surface of the clamping plate 63 is welded with protruding teeth 631 that are embedded in the slots b. The clamping plate 63 clamps the lifting rod 71, and the protruding teeth 631 are embedded inside the lifting rod 71, so that the lifting rod 71, the lifting plate 7, and the resistance plate 8 remain stable.

[0032] In this embodiment, the movable plate 10 is cylindrical through the top surface of the fixed base 6, so that the movable plate 10 can be opened by pushing it with a finger. The cylindrical ends of the symmetrically distributed movable plates 10 are distributed on both sides of the lifting plate 7. When the lifting plate 7 is manually lifted, the symmetrically distributed movable plates 10 can be opened in opposite directions, which is conducive to the lifting plate 7 and the lifting rod 71 moving upward.

[0033] In this embodiment, the resistance plate 8 is arc-shaped, and a resistance pad 81 is glued to one side surface of the resistance plate 8. The resistance pad 81 has a grid pattern a on its surface. The grid pattern a increases the frictional resistance between the resistance pad 81 and the worm gear B. The resistance pad 81 on the resistance plate 8 is in contact with the worm gear B, and there is frictional resistance between the resistance pad 81 and the worm gear B, which achieves the function of limiting the worm gear B and preventing the worm gear B from deflecting.

[0034] In this embodiment, the first tip 32 and the second tip 43 are welded with cone-shaped clamping tips on their opposing surfaces. The end of the lead screw 22 that passes through the slide table 21 is fixed with a handwheel by screws. The handwheel facilitates changing the angle of the lead screw 22. The surface of one end of the adjusting cylinder 42 is connected with a round rod straight handle by thread. The round rod straight handle facilitates moving the adjusting cylinder 42 along its own axis, thereby fine-tuning the position of the adjusting cylinder 42. The surface of the tooling table 1 near the fixed tip seat 31 is fixed with an auxiliary support block 9 by screws. The auxiliary support block 9 supports one end of the worm gear A, preventing the worm gear A from becoming unbalanced due to lack of support.

[0035] Working principle and usage process of this utility model:

[0036] When assembling the worm gear B and the worm A, manually open the symmetrically distributed movable plates 10 in opposite directions. The movable plates 10 drive the clamping plates 63 to open, and manually move the lifting plates 7 and lifting rods 71 ​​upward.

[0037] When the lifting plate 7 moves to a suitable height, the movable plate 10 is released. The clamping plate 63 is made of an elastic material, such as spring steel, which has the ability to reset deformation. The clamping plate 63 and the movable plate 10 reset. The clamping plate 63 clamps the lifting rod 71. The protrusion 631 is embedded in the lifting rod 71, so that the lifting rod 71, the lifting plate 7, and the resistance plate 8 remain stable.

[0038] When installing worm gear B, worm gear B is sleeved on the outside of locating pin 53;

[0039] Manual operation causes the lifting rod 71, lifting plate 7, and resistance plate 8 to move down. The resistance plate 8 presses against the rounded surface of the worm wheel B. There is frictional resistance between the resistance pad 81 and the worm wheel B, which achieves the function of limiting the worm wheel B and preventing the worm wheel B from deflecting.

[0040] When worm A is installed, one end of worm A is in contact with the first tip 32, and the other end of worm A is in contact with the second tip 43. Worm A is clamped between the first tip 32 and the second tip 43.

[0041] By manually operating the handwheel at the end of the lead screw 22, the slide plate 23 can be moved linearly along the axial direction of the lead screw 22, thereby changing the position of the pad 51, the support block 52 and the worm wheel B, so as to finely adjust the position of the worm wheel B and make the meshing of the worm wheel B and the worm A precise fit.

[0042] In summary, this application proposes a tooling design for convenient adjustment of the meshing clearance between the worm wheel and the worm. The worm wheel B is sleeved on the outside of the locating pin 53. When the lead screw 22 rotates, the positions of the pad 51, the support block 52, and the worm wheel B are changed. The resistance plate 8 and the resistance pad 81 press the worm wheel B tightly. The worm A is clamped between the first center 32 and the second center 43. The position of the worm wheel B is finely adjusted to ensure a precise meshing fit between the worm wheel B and the worm A.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision tooling for worm gear meshing, characterized in that: include The support assembly for supporting the worm gear includes a tooling table (1) and a slide table (21) fixed by bolts, a lead screw (22) and a slide plate (23) slidably connected, a pad (51) and a support block (52) fixed by screws, and a locating pin (53) fixed to the support block (52) by a bearing. The center assembly for clamping the worm includes a fixed center seat (31) fixed to the tooling table (1) by screws, a first center (32) with one end inserted into the fixed center seat (31), a movable center seat (41) fixed to the tooling table (1) by screws, an adjusting cylinder (42) passing through the movable center seat (41), and a second center (43) fixedly connected to one end of the adjusting cylinder (42). The pressing assembly for pressing the side of the worm gear includes a fixed seat (6) fixed to the tooling table (1) by screws, a lifting rod (71) pulled and connected to the fixed seat (6), a lifting plate (7) perpendicular to the top of the lifting rod (71), and a resistance plate (8) fixedly connected to one end of the lifting plate (7). A clamping plate (63) for clamping the lifting rod (71) is welded inside one side of the fixed seat (6), and a movable plate (10) welded to the clamping plate (63) passes through the top surface of one side of the fixed seat (6).

2. The precision tooling for worm gear meshing according to claim 1, characterized in that: The fixed base (6) includes a horizontal part and a vertical part. The lifting rod (71) is inserted into the vertical part. The clamping plate (63) is installed in the vertical part. A limiting cylinder (61) and a guide rod (62) are provided between the lifting plate (7) and the horizontal part for sliding connection.

3. The precision tooling for worm gear meshing according to claim 1, characterized in that: The lifting rod (71) has recessed slots b on its opposite surfaces.

4. The precision tooling for worm gear meshing according to claim 3, characterized in that: The top of the clamping plate (63) is curved, and the curved end surface of the clamping plate (63) is welded with protruding teeth (631) embedded in the slot b.

5. The precision tooling for worm gear meshing according to claim 1, characterized in that: The movable plate (10) is cylindrical through the top surface of the fixed base (6), and the cylindrical ends of the symmetrically distributed movable plates (10) are distributed on both sides of the lifting plate (7).

6. The precision tooling for worm gear meshing according to claim 1, characterized in that: The resistance plate (8) is arc-shaped, and a resistance pad (81) is glued to one side surface of the resistance plate (8). The resistance pad (81) has a grid pattern a on its surface.

7. The precision tooling for worm gear meshing according to claim 1, characterized in that: The first tip (32) and the second tip (43) are welded with a cone-shaped clamping tip. The screw (22) is fixed with a handwheel by a screw at one end of the slide seat (21). The surface of one end of the adjusting cylinder (42) is connected with a round rod straight handle by a threaded connection. The surface of the tooling table (1) near the fixed tip seat (31) is fixed with an auxiliary support block (9) by a screw.

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