A positioning device for machining helical gears

Abstract

This utility model relates to the field of helical gear machining and discloses a positioning device for helical gear machining, including a mounting column fixed to the top surface of a base. An externally threaded tube is fixedly sleeved on the mounting column. A blocking ring is fixed to the bottom surface of the externally threaded tube. A lowerly threaded ring is threaded onto the externally threaded tube. A sliding ring is sleeved on the externally threaded tube. An upperly threaded ring is threaded onto the externally threaded tube. The sliding ring is positioned between the lower and upperly threaded rings. Two handles are fixed to the top surface of the upperly threaded ring, and a pressing plate is fixed to the surface of the sliding ring. In this utility model, by applying a downward force to the sliding ring through the downwardly screwed upperly threaded ring, the position of the sliding ring is determined. Once the upperly threaded ring stops rotating, the sliding ring is fixed in its current position, increasing the stability of the sliding ring in that position.

Description

Technical Field

[0001] This utility model relates to the technical field of helical gear processing, specifically to a positioning device for helical gear processing. Background Technology

[0002] Helical gear machining is a gear manufacturing technology used to transmit motion and power between intersecting shafts. Its tooth contact line is oblique, which can meet the requirements of non-parallel shaft transmission. Machining requires CNC milling machines, gear hobbing machines, or specialized helical gear machining equipment, combined with precise calculations and programming to ensure accurate matching of tooth profile parameters. The process includes blank forming, tooth profile milling / hobbing, tooth surface hardening, and fine grinding, requiring strict control of helix angle error and axial misalignment to ensure smooth meshing.

[0003] According to Chinese Patent No. CN213614590U, a positioning device for grinding the end face of a helical gear includes a base, a mounting column fixedly mounted on the top surface of the base, a limiting plate fixedly mounted on the top surface of the mounting column, an external thread on the middle of the mounting column, a helical gear receiving platform fixedly mounted on the outer circumferential surface of the mounting column below the external thread, and a pressing assembly including a nut placed on the external thread and movable up and down along the external thread, a support plate sleeved on the outer circumferential surface of the mounting column above the nut, a mounting hole in the middle of the support plate, a linear bearing fixedly mounted on the inner circumferential surface of the mounting hole, the inner ring of the linear bearing mounted on the outer circumferential surface of the mounting column, a mounting plate fixedly mounted on the bottom surface of the limiting plate, an upper mounting groove on the bottom surface of the mounting plate, a lower mounting groove on the top surface of the support plate, compression springs installed in the upper and lower mounting grooves, and a pressing plate fixedly mounted on the outer circumferential surface of the bottom surface of the support plate for pressing the edge of the top surface of the helical gear to be ground.

[0004] In the above scheme, a compression spring is used to apply a downward force to the support plate, which still has the following disadvantages: after the compression spring applies a downward force to the support plate, the support plate may rebound due to external force after being pressed down by the compression spring, resulting in poor stability of the helical gear positioning. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for helical gear processing, so as to solve the problem that the support plate may rebound due to external force after being pressed down by the compression spring, resulting in poor positioning stability of the helical gear.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a positioning device for machining helical gears, comprising a mounting column, the mounting column being fixed to the top surface of a base, an external threaded tube being fixedly sleeved on the mounting column, a blocking ring being fixed to the bottom surface of the external threaded tube, a lower threaded ring being threadedly connected to the external threaded tube, a sliding ring being sleeved on the external threaded tube, an upper threaded ring being threadedly connected to the external threaded tube, the sliding ring being disposed between the lower threaded ring and the upper threaded ring, two handles being fixed to the top surface of the upper threaded ring, and a pressing plate being fixed to the surface of the sliding ring.

[0007] Preferably, a connecting plate is fixed on the mounting column, a receiving platform is fixed on one side of the connecting plate, a debris receiving groove is formed on the top surface of the receiving platform, a support platform is rotatably arranged on the bottom surface of the debris receiving groove, and a gear receiving groove is formed on the top surface of the support platform.

[0008] Preferably, the bottom surface of the debris receiving groove is provided with a rotating groove, and a rotating cover is rotatably disposed inside the rotating groove, the top surface of the rotating cover being fixed to the bottom surface of the support platform.

[0009] Preferably, the top of the mounting column is provided with a mounting groove, a cross plate is fixed inside the mounting groove, a motor is fixed on the bottom surface of the cross plate, the output shaft of the motor is rotatably inserted into the cross plate, two sliding plates are fixed on the surface of the motor output shaft, and two positioning rods are fixed on the top surface of the upper threaded ring, with the sliding plates and positioning rods slidably inserted into each other.

[0010] Preferably, the bottom surface of the upper threaded ring is provided with a plurality of fixing grooves, and rollers are rotatably arranged inside the fixing grooves.

[0011] Preferably, a support column is fixed to the top surface of the base, and the top end of the support column is fixed to the bottom surface of the receiving platform.

[0012] Compared with the prior art, the positioning device for helical gear machining that adopts the above technical solution has the following beneficial effects:

[0013] 1. By applying a downward force to the sliding ring through the downward-screwing upper threaded ring, the position of the sliding ring is determined. Once the upper threaded ring stops rotating, the sliding ring can be fixed in the current position, which increases the stability of the sliding ring in the current position.

[0014] Second, the presence of the support column can support the receiving platform upwards, increasing the stability of the receiving platform's position on the mounting column. The output shaft of the motor will drive the two sliding plates to rotate above the top of the mounting column, and during the rotation, it will drive the two positioning rods to rotate synchronously. During the rotation of the upper threaded ring, the roller will slide on the top surface of the sliding ring, reducing the friction of the upper threaded ring rotating on the sliding ring, thereby realizing the automatic up and down movement of the upper threaded ring on the external threaded pipe. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0016] Figure 2 This is a schematic diagram of the split section in an embodiment.

[0017] Figure 3 This is a schematic diagram of the separation of the blocking ring and the pressing plate in an embodiment.

[0018] Figure 4 This is a schematic diagram of the disassembly of the sliding plate and positioning rod in an embodiment.

[0019] In the diagram: 1. Base; 2. Mounting post; 3. External threaded pipe; 4. Blocking ring; 5. Lower threaded ring; 6. Sliding ring; 7. Upper threaded ring; 8. Handle; 9. Pressing plate; 10. Connecting plate; 11. Receiving platform; 12. Debris receiving groove; 13. Support platform; 14. Gear receiving groove; 15. Rotating groove; 16. Rotating cover; 17. Mounting groove; 18. Cross plate; 19. Motor; 20. Sliding plate; 21. Positioning rod; 22. Supporting post; 23. Fixing groove; 24. Roller. Detailed Implementation

[0020] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-3As shown, a positioning device for machining helical gears includes a mounting column 2, which is fixed to the top surface of a base 1. An external threaded tube 3 is fixedly sleeved on the mounting column 2. A blocking ring 4 is fixed to the bottom surface of the external threaded tube 3. A lower threaded ring 5 is threadedly connected to the external threaded tube 3. A sliding ring 6 is sleeved on the external threaded tube 3. An upper threaded ring 7 is threadedly connected to the external threaded tube 3. The sliding ring 6 is located between the lower threaded ring 5 and the upper threaded ring 7. Two handles 8 are fixed to the top surface of the upper threaded ring 7. A pressing plate 9 is fixed to the surface of the sliding ring 6. A connecting plate 10 is fixed to the mounting column 2. A receiving platform 11 is fixed to one side of the connecting plate 10. A chip receiving groove 12 is opened on the top surface of the receiving platform 11. A support platform 13 is rotatably arranged on the bottom surface of the chip receiving groove 12. A gear receiving groove 14 is opened on the top surface of the support platform 13. A rotating groove 15 is opened on the bottom surface of the chip receiving groove 12. A rotating cover 16 is rotatably arranged inside the rotating groove 15. The top surface of the rotating cover 16 is fixed to the bottom surface of the support platform 13.

[0022] In use, the operator first places the helical gear into the gear receiving groove 14. Then, according to the position of the helical gear, the operator first adjusts the height of the lower threaded ring 5 on the external threaded tube 3, which drives the sliding ring 6 to adjust up and down synchronously. This causes the bottom surface of the pressing plate 9 to approach the top of the helical gear. After the position of the sliding ring 6 is determined, the downward-screwed upper threaded ring 7 will apply a downward force to the sliding ring 6. The pressing plate 9 can then apply a downward force to the helical gear, thereby fixing the helical gear inside the gear receiving groove 14. Subsequently, during the processing of the helical gear, the angle of the helical gear can be adjusted by rotating the support table 13.

[0023] By applying a downward force to the sliding ring 6 through the downward-screwing upper threaded ring 7, the position of the sliding ring 6 is determined. Once the upper threaded ring 7 stops rotating, the sliding ring 6 can be fixed in the current position, thus increasing the stability of the sliding ring 6 in the current position.

[0024] like Figures 2-4 As shown, the top of the mounting column 2 is provided with a mounting groove 17, and a cross plate 18 is fixed inside the mounting groove 17. A motor 19 is fixed on the bottom surface of the cross plate 18. The output shaft of the motor 19 is rotatably inserted into the cross plate 18. Two sliding plates 20 are fixed on the surface of the output shaft of the motor 19. Two positioning rods 21 are fixed on the top surface of the upper threaded ring 7. The sliding plates 20 and the positioning rods 21 are slidably inserted into each other. Several fixing grooves 23 are provided on the bottom surface of the upper threaded ring 7. Rollers 24 are rotatably installed inside the fixing grooves 23. A support column 22 is fixed on the top surface of the base 1. The top of the support column 22 is fixed to the bottom surface of the receiving platform 11.

[0025] During use, the presence of the support column 22 can support the receiving platform 11 upwards, increasing the stability of the receiving platform 11 on the mounting column 2. The output shaft of the rotating motor 19 will drive the two sliding plates 20 to rotate above the top of the mounting column 2, and drive the two positioning rods 21 to rotate synchronously during the rotation. During the rotation of the upper threaded ring 7, the roller 24 will slide on the top surface of the sliding ring 6, reducing the friction of the upper threaded ring 7 rotating on the sliding ring 6, thereby realizing the automatic up and down movement of the upper threaded ring 7 on the external threaded tube 3.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning device for machining helical gears, comprising a mounting column (2), said mounting column (2) being fixed to the top surface of a base (1), characterized in that, An external threaded tube (3) is fixedly sleeved on the mounting post (2). A blocking ring (4) is fixed on the surface of the bottom end of the external threaded tube (3). A lower threaded ring (5) is threadedly connected to the external threaded tube (3). A sliding ring (6) is sleeved on the external threaded tube (3). An upper threaded ring (7) is threadedly connected to the external threaded tube (3). The sliding ring (6) is located between the lower threaded ring (5) and the upper threaded ring (7). Two handles (8) are fixed on the top surface of the upper threaded ring (7). A pressing plate (9) is fixed on the surface of the sliding ring (6).

2. The positioning device for machining helical gears according to claim 1, characterized in that: A connecting plate (10) is fixed on the mounting column (2). A receiving platform (11) is fixed on one side of the connecting plate (10). A debris receiving groove (12) is opened on the top surface of the receiving platform (11). A support platform (13) is rotatably arranged on the bottom surface of the debris receiving groove (12). A gear receiving groove (14) is opened on the top surface of the support platform (13).

3. The positioning device for machining helical gears according to claim 2, characterized in that: The inner bottom surface of the debris receiving groove (12) is provided with a rotating groove (15), and a rotating cover (16) is rotatably provided inside the rotating groove (15). The top surface of the rotating cover (16) is fixed to the bottom surface of the support platform (13).

4. The positioning device for machining helical gears according to claim 1, characterized in that: The top of the mounting column (2) is provided with a mounting groove (17), and a cross plate (18) is fixed inside the mounting groove (17). A motor (19) is fixed on the bottom surface of the cross plate (18). The output shaft of the motor (19) is rotatably inserted into the cross plate (18). Two sliding plates (20) are fixed on the surface of the output shaft of the motor (19). Two positioning rods (21) are fixed on the top surface of the upper threaded ring (7). The sliding plates (20) and the positioning rods (21) are slidably inserted into each other.

5. A positioning device for machining helical gears according to claim 1, characterized in that: The bottom surface of the upper threaded ring (7) is provided with several fixing grooves (23), and a roller (24) is rotatably arranged inside the fixing groove (23).

6. The positioning device for machining helical gears according to claim 1, characterized in that: The top surface of the base (1) is fixed with a support column (22), and the top of the support column (22) is fixed with the bottom surface of the receiving platform (11).

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