A positioning fixture for chamfering wind turbine gears

Abstract

This utility model relates to the field of wind turbine gear machining technology, specifically a positioning fixture for chamfering wind turbine gears. It includes a fixed base, a positioning plate, a screw, and a pressing assembly. The fixed base is fixed to a machining table, and an assembly protrusion is formed on the top end face of the fixed base. The positioning plate is detachably fixed to the top of the fixed base, and a through hole matching the assembly protrusion is opened in the center of the positioning plate. A positioning protrusion is formed on the receiving surface of the positioning plate, and the outer diameter of the positioning protrusion is adapted to the inner diameter of the through hole of the wind turbine gear at the mating point. The screw passes through the wind turbine gear and engages with the fixed base. The pressing assembly includes a pressure plate mating on the screw and a nut fixing the pressure plate. The pressure plate presses against the top end face of the wind turbine gear, and the nut is mated with the screw and close to the side of the pressure plate away from the wind turbine gear. This solves the technical problems of low clamping efficiency and poor adaptability of clamping tools in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gear machining technology, specifically a positioning fixture for chamfering wind turbine gears. Background Technology

[0002] Currently, wind turbine gears are relatively large workpieces, with large dimensions and heavy weight. Their clamping differs from that of traditional smaller workpieces, requiring higher positioning accuracy and precision, as well as demanding greater strength from the mounting fixtures. Furthermore, chamfering is one of the final processes in gear machining, at which point the gear tooth profile has been completed, and clamping must avoid damaging the tooth surface. Moreover, wind turbine gears are generally mass-produced products, so improving mounting efficiency while ensuring quality is also crucial in the production process. Summary of the Invention

[0003] To address the technical problems of low clamping efficiency and poor adaptability of clamping tools in existing wind turbine gears, this application proposes a positioning fixture for chamfering wind turbine gears, which solves the aforementioned technical problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] This utility model provides a positioning fixture for chamfering wind turbine gears, comprising: a fixed base, which is fixed on a machining table, and an assembly protrusion is formed on the top end face of the fixed base; a positioning plate, which is detachably fixed to the top of the fixed base, and has an assembly through hole in the center of the positioning plate that matches the assembly protrusion; the top surface of the positioning plate is formed as a receiving surface for receiving the bottom end of the wind turbine gear, and a positioning protrusion is formed on the receiving surface, extending into the through hole of the wind turbine gear, the outer diameter of the positioning protrusion being adapted to the inner diameter of the through hole of the wind turbine gear at the mating point; a screw, which is inserted from the top end of the wind turbine gear, passes through the wind turbine gear, and then engages with the fixed base; and a pressing assembly, which includes a pressure plate engaged with the screw and a nut for fixing the pressure plate, the pressure plate being pressed onto the top end face of the wind turbine gear to position the wind turbine gear on the positioning plate, and the nut engaging with the screw and abutting against the side of the pressure plate away from the wind turbine gear to position the pressure plate.

[0006] Furthermore, the positioning disk is screwed onto the positioning disk.

[0007] Furthermore, the positioning disk has multiple first threaded holes evenly distributed on its surface, and the top surface of the fixed base has multiple second threaded holes at positions corresponding to the first threaded holes of the positioning disk.

[0008] Furthermore, the pressure plate is a rectangular plate.

[0009] Furthermore, the fixed base also includes a column, the bottom of which forms a base plate. The base plate has multiple evenly distributed open waist-shaped holes, and the base plate is screwed to the machining table through the open waist-shaped holes.

[0010] Furthermore, multiple reinforcing ribs are welded at the connection between the chassis and the column.

[0011] Furthermore, a secondary convex ring is also formed on the assembly convex ring.

[0012] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0013] This utility model discloses a positioning fixture for chamfering wind turbine gears. It has a simple structure and uses a pressure plate to position and fix the wind turbine gear. The clamping surfaces of the wind turbine gear are formed on the two end faces of the gear, which does not interfere with the chamfering process on the outer wall of the gear. The positioning plate can be adjusted and replaced according to different specifications of the wind turbine gear without replacing the fixed base, which improves adaptability and simplifies the positioning process. The screw and pressing assembly are common workshop parts, which are readily available and easy to replace. The cost is low and the assembly method is simple, thus solving the technical problems of low clamping efficiency and poor adaptability of clamping tools in the prior art. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the positioning fixture for chamfering wind turbine gears according to this utility model.

[0015] Figure 2 This is a schematic diagram of the positioning disc of this utility model;

[0016] Figure 3 This is a schematic diagram of the fixed base of this utility model;

[0017] Figure 4 This is a cross-sectional view of the fixed base of this utility model.

[0018] Wherein: a-wind turbine gear; 1-fixed base, 11-assembly convex ring, 111-secondary convex ring, 12-second threaded hole, 13-column, 14-base plate, 15-open waist-shaped hole, 16-reinforcing rib; 2-positioning plate, 21-assembly through hole, 22-positioning convex ring, 23-first threaded hole; 3-screw; 4-pressing assembly, 41-pressure plate, 42-nut. Detailed Implementation

[0019] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] like Figure 1-4 As shown, this utility model provides a positioning fixture for chamfering wind turbine gears, including a fixed base 1, a positioning plate 2, a screw 3, and a pressing assembly 4. The fixed base 1 is fixed on a machining table, and an assembly protrusion 11 is formed on the top end face of the fixed base 1. The positioning plate 2 is detachably fixed to the top of the fixed base 1. An assembly through hole 21 matching the assembly protrusion 11 is opened in the center of the positioning plate 2. The top surface of the positioning plate 2 is formed as a receiving surface for receiving the bottom end of the wind turbine gear a. A positioning protrusion 22 is formed on the receiving surface. The positioning protrusion 22 extends... The positioning ring 22 is inserted into the through hole of the wind turbine gear a. The outer diameter of the positioning ring 22 is adapted to the inner diameter of the through hole of the wind turbine gear a at the mating point. The screw 3 is inserted from the top of the wind turbine gear a and passes through the wind turbine gear a before being fitted into the fixed base 1. The pressing assembly 4 includes a pressure plate 41 fitted on the screw 3 and a nut 42 that fixes the pressure plate 41. The pressure plate 41 is pressed onto the top end face of the wind turbine gear a to position the wind turbine gear a on the positioning plate 2. The nut 42 is fitted on the screw 3 and close to the side of the pressure plate 41 away from the wind turbine gear a to position the pressure plate 41.

[0021] The positioning fixture for chamfering wind turbine gears of this utility model adopts a combination clamping method, which is highly flexible and can be adapted to wind turbine gears of similar size and shape. It can also be extended to the pre-clamping of similar gear-type workpieces before chamfering.

[0022] The positioning disc 2 is made of 45 steel, which has been heat-treated and has a hardness of 270-300HB.

[0023] In one specific embodiment of this utility model, the positioning disk 2 is screwed onto the positioning disk 2.

[0024] Specifically, the positioning disk 2 has multiple first threaded holes 23 evenly distributed on its surface, and at the same time, the top surface of the fixed base 1 has multiple second threaded holes 12 at positions corresponding to the first threaded holes 23 of the positioning disk 2.

[0025] In one specific embodiment of this utility model, the pressure plate 41 is a rectangular plate.

[0026] In a specific embodiment of this utility model, the fixed base 1 further includes a column 13, and a base plate 14 is formed at the bottom of the column 13. The base plate 14 has a plurality of evenly distributed open waist-shaped holes 15, and the base plate 14 is screwed to the machining table through the open waist-shaped holes 15.

[0027] Furthermore, multiple reinforcing ribs 16 are welded at the connection between the chassis 14 and the column 13.

[0028] In one specific embodiment of this utility model, a secondary convex ring 111 is also formed on the mounting convex ring 11 so that the fixed base 1 can be directly adapted to the gear workpiece with the same shape, thereby increasing the adaptability.

[0029] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A positioning fixture for chamfering wind turbine gears, characterized in that, include: A fixed base (1) is fixed on a machining table, and an assembly protrusion (11) is formed on the top end face of the fixed base (1). Positioning disk (2), the positioning disk (2) is detachably fixed to the top of the fixed base (1), the center of the positioning disk (2) is provided with an assembly through hole (21) that matches the assembly convex ring (11), the top surface of the positioning disk (2) is formed as a receiving surface for receiving the bottom end of the wind turbine gear (a), a positioning convex ring (22) is formed on the receiving surface, the positioning convex ring (22) extends into the through hole of the wind turbine gear (a), and the outer diameter of the positioning convex ring (22) is adapted to the inner diameter of the through hole of the wind turbine gear (a) at the mating point; Screw (3), which is inserted from the top of the wind turbine gear (a) and passes through the wind turbine gear (a) before being fitted into the fixed base (1); The pressing assembly (4) includes a pressure plate (41) fitted on the screw (3) and a nut (42) for fixing the pressure plate (41). The pressure plate (41) is pressed onto the top end face of the wind turbine gear (a) to position the wind turbine gear (a) on the positioning plate (2). The nut (42) is fitted on the screw (3) and close to the side of the pressure plate (41) away from the wind turbine gear (a) to position the pressure plate (41).

2. The positioning fixture for chamfering wind turbine gears according to claim 1, characterized in that, The positioning disk (2) is screwed to the positioning disk (2).

3. The positioning fixture for chamfering wind turbine gears according to claim 2, characterized in that, The positioning disk (2) has a plurality of first threaded holes (23) evenly distributed on its surface. Meanwhile, the top surface of the fixed base (1) has a plurality of second threaded holes (12) at positions corresponding to the first threaded holes (23) of the positioning disk (2).

4. The positioning fixture for chamfering wind turbine gears according to claim 1, characterized in that, The pressure plate (41) is a rectangular plate.

5. The positioning fixture for chamfering wind turbine gears according to claim 1, characterized in that, The fixed base (1) also includes a column (13), and a base plate (14) is formed at the bottom of the column (13). The base plate (14) has a plurality of evenly distributed open waist-shaped holes (15), and the base plate (14) is screwed to the machining table through the open waist-shaped holes (15).

6. The positioning fixture for chamfering wind turbine gears according to claim 5, characterized in that, Multiple reinforcing ribs (16) are welded at the connection between the chassis (14) and the column (13).

7. The positioning fixture for chamfering wind turbine gears according to claim 1, characterized in that, A secondary convex ring (111) is also formed on the assembly convex ring (11).

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