A toothed wire cutting fixture for toothed cutting tools

Abstract

This utility model discloses a wire cutting fixture for a toothed cutter, including a fixture mandrel and a fixture plate. One end of the fixture mandrel has a limiting block that engages with the limiting groove of the fixture plate, and the other end is secured to the toothed cutter by a locking nut. Locking washers distribute the clamping force evenly. Fastening bolts on the side wall of the fixture plate eliminate clearance and prevent the limiting block from moving up and down. The pressure plate achieves positioning and limiting through multiple sets of positioning grooves and protrusions. The frame has multiple sets of clamping threaded holes to expand the adjustment range. Different sized expanding sleeves are fitted onto the fixture mandrel to accommodate toothed cutters of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, specifically to a tooth profile wire cutting fixture for a gear shaper. Background Technology

[0002] Gear shapers are key cutting tools in gear machining, typically gear-shaped. Their tooth profile accuracy directly affects the quality of gear machining. Traditional gear shaper tooth profile machining mainly relies on grinding on a gear shaper grinder, which is extremely inefficient. Using wire EDM to rough-machine the gear shaper tooth profile, followed by grinding on a gear shaper grinder, can significantly reduce grinding time and improve production efficiency. However, gear-shaped gear shapers are difficult to clamp, often prone to loosening, and difficult to adapt to multiple gear shaper specifications. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects existing in the prior art and provide a toothed wire cutting fixture for toothed cutters.

[0004] To achieve the above objectives, the technical solution of this utility model is to design a toothed wire cutting fixture, including a fixture mandrel and a fixture plate. The fixture plate is mounted on a frame and has a limiting groove. One end of the fixture mandrel is provided with a limiting block that matches the limiting groove, and the other end is provided with a locking thread. A locking nut that matches the locking thread is provided on the locking thread, and an installation part is provided between the limiting block and the locking thread.

[0005] Furthermore, a baffle is provided on the side of the limiting block near the locking thread. The baffle can further position and limit the position of the limiting block and the limiting groove.

[0006] Furthermore, it also includes an expanding sleeve, the inner side of which is provided with an expanding slider, and the mounting part is provided with an expanding groove that matches the expanding slider. By fitting expanding sleeves of different diameters on the mounting part, more sizes of gear shaping cutters can be accommodated.

[0007] Preferably, the limiting groove and the limiting block are centrally symmetrical shapes. Oval, rectangular, or elliptical shapes are preferred. Because of the mutual constraints between parts during wire cutting, each cut can only be 180 degrees. Therefore, after completing a 180-degree cut, rotation to change direction is required. When the limiting groove and the limiting block are centrally symmetrical shapes, this function can be achieved.

[0008] Furthermore, the fixture plate has a fastening threaded hole on one side perpendicular to the axis of the limiting groove, and a matching fastening bolt is provided on the fastening threaded hole. The fastening threaded hole and the fastening bolt can axially fix the limiting block in the limiting groove, preventing it from moving up and down during processing.

[0009] Furthermore, it also includes a locking washer, which is fitted onto the fixture mandrel and positioned between the locking nut and the gear hobbing cutter to be processed, which is also fitted onto the fixture mandrel. The locking washer further restricts the displacement of the gear hobbing cutter to be processed.

[0010] Furthermore, it also includes a pressure plate, on both sides of which are provided at least two clamping threaded holes, and on one side of the frame, at least two clamping threaded holes are also provided. The spacing between the clamping threaded holes is greater than the width of the clamping plate, and clamping bolts are inserted into the clamping threaded holes. By using clamping bolts in conjunction with the clamping threaded holes, the clamping plate can be clamped using the pressure plate and the frame, thereby fixing the clamping plate.

[0011] Preferably, the clamping threaded holes on one side of the frame are multiple and evenly spaced. The multiple clamping threaded holes on the frame allow for adjustment of the clamping position of the fixture plate as needed.

[0012] Furthermore, the pressure plate is provided with at least two positioning protrusions, and the contact surface between the fixture plate and the pressure plate is provided with multiple sets of positioning grooves that match the positioning protrusions. The positioning protrusions and positioning grooves can further restrict the fixture plate to prevent displacement, and can adjust the position of the pressure plate pressing the fixture plate, thereby adjusting the position of the gear hobbing cutter to be processed.

[0013] Furthermore, one end of the clamping plate is provided with a stepped surface. During installation, aligning the stepped surface with the mounting side of the frame serves to position the clamping plate and prevent it from shifting.

[0014] The advantages and beneficial effects of this utility model are as follows:

[0015] 1. When using wire EDM for rough machining of tooth profiles, it can effectively fix the gear cutter to be machined.

[0016] 2. The interplay of the clamping threaded hole, positioning protrusion, and positioning groove allows for adjustment of the distance between the gear shaping cutter and the wire EDM device, thereby adapting to different sizes of gear shaping cutters and the clamping environment required for tooth profile machining.

[0017] 3. By fitting different sized expanding sleeves onto the mounting part, more sizes of gear shaping cutters can be accommodated. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the fixture structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the fixture of this utility model;

[0020] Figure 3 This is a schematic diagram of the clamp mandrel structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixture plate structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the pressure plate structure with positioning protrusions of this utility model.

[0023] Figure 6 This is a schematic diagram of the expanded diameter sleeve structure of this utility model.

[0024] In the diagram: 1. Fixture mandrel; 11. Limiting block; 12. Locking thread; 13. Locking nut; 14. Baffle; 15. Mounting part; 151. Expanding groove; 2. Fixture plate; 21. Limiting groove; 22. Fastening threaded hole; 23. Fastening bolt; 24. Positioning groove; 25. Stepped surface; 3. Frame; 4. Locking washer; 5. Gear cutter to be processed; 6. Pressure plate; 61. Pressing threaded hole; 62. Pressing bolt; 63. Positioning protrusion; 7. Wire cutting device; 8. Expanding sleeve; 81. Expanding slider. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0026] according to Figure 1 As shown, this utility model relates to a toothed wire cutting fixture, including a fixture mandrel 1 and a fixture plate 2. The fixture plate 2 is mounted on a frame 3 and has a limiting groove 21. One end of the fixture mandrel 1 is provided with a limiting block 11 that matches the limiting groove 21, and the other end is provided with a locking thread 12. A locking nut 13 that matches the locking thread 12 is provided on the locking thread 12. An installation part 15 is provided between the limiting block 11 and the locking thread 12.

[0027] The working principle is as follows: First, the fixture plate 2 is installed in a suitable position on the frame 3. This can be done by fixed installation, such as welding, or by detachable installation, such as bolt connection. Then, the gear hobbing cutter 5 to be processed is mounted on the mounting part 15 of the fixture mandrel 1, and the locking nut 13 is screwed into the locking thread 12 at one end of the fixture mandrel 1. Next, the limiting block 11 at one end of the fixture mandrel 1 is inserted into the limiting groove 21 on the fixture plate 2. During processing, the cutting line of the wire cutting device 7 will perform coarse cutting of the gear hobbing cutter 5 along the set route. After one side of the gear hobbing cutter 5 is cut, due to the mutual constraint between the parts during wire cutting, each cut can only be 180 degrees. Therefore, after completing the 180-degree cut, it is necessary to change the direction and continue cutting.

[0028] according to Figure 2 , 3As shown, in any embodiment, a baffle 14 is provided on the side of the limiting block 11 near the locking thread 12. The difference from other embodiments is that the baffle 14 is provided on the side of the limiting block 11 near the locking thread 12, and the baffle 14 can clamp the gear hobbing cutter 5 to be processed with the locking nut 13, so as to better prevent it from shifting.

[0029] according to Figure 3 , 6 As shown, in any embodiment, an expanding sleeve 8 is further included. An expanding slider 81 is provided on the inner side of the expanding sleeve 8, and an expanding groove 151 matching the expanding slider 81 is provided on the mounting portion 15. The difference from other embodiments is that expanding sleeves 8 of different sizes can accommodate gear hobbing cutters 5 of different sizes. In use, before fitting the gear hobbing cutter 5, simply insert the expanding slider 81 of the expanding sleeve 8 into the expanding groove 151 of the mounting portion 15 to make them fit together, and then fit the gear hobbing cutter 5 onto the expanding sleeve 8.

[0030] In any embodiment, the limiting groove 21 and the limiting block 11 are centrally symmetrical. The difference from other embodiments is that, due to the mutual constraints between parts during wire cutting, each cut can only be performed in 180-degree increments. Therefore, after completing a 180-degree cut, the direction needs to be reversed to continue cutting. Thus, when the limiting groove 21 and the limiting block 11 are centrally symmetrical, it is only necessary to remove the entire clamping mandrel 1 and all components mounted on it, then rotate it 180 degrees and insert it back into the limiting groove 21; there is no need to disassemble or reassemble the locking nut 13.

[0031] according to Figure 1 , 2 As shown in Figures 4 and 5, in any embodiment, the clamping plate 2 has a fastening threaded hole 22 on one side perpendicular to the axis of the limiting groove 21, and a matching fastening bolt 23 is provided on the fastening threaded hole 22. The difference from other embodiments is that, in use, the fastening bolt 23 is screwed into the fastening threaded hole 22 on the clamping plate 2 and pressed against the limiting block 11 of the clamping core rod 1, which can further fix the clamping core rod 1.

[0032] according to Figure 1 , 2 As shown, in any embodiment, a locking washer 4 is further included. The locking washer 4 is fitted onto the fixture mandrel 1 and positioned between the locking nut 13 and the gear hobbing cutter 5 to be processed. The gear hobbing cutter 5 to be processed is also fitted onto the fixture mandrel 1. The difference from other embodiments is that the locking washer 4 is added to make the gear hobbing cutter 5 to be processed and the locking nut 13 more secure, further preventing the gear hobbing cutter 5 to be processed from shifting. In use, after fitting the gear hobbing cutter 5 to be processed, the locking washer 4 is also fitted onto the fixture mandrel 1, and the locking nut 13 is tightened.

[0033] according to Figure 1 , 2 As shown, in any embodiment, a pressure plate 6 is also included. The pressure plate 6 has at least two clamping threaded holes 61 on both sides, and the frame 3 also has at least two clamping threaded holes 61 on one side. The spacing between the clamping threaded holes 61 is greater than the width of the clamping plate 2, and clamping bolts 62 pass through the clamping threaded holes 61. The difference from other embodiments is that this embodiment uses the pressure plate 6 to mount the clamping plate 2 onto the frame 3, thereby allowing for a movable connection between the two, facilitating future replacement and position adjustment. In use, simply place the clamping plate 2 between the pressure plate 6 and the frame 3, and then screw the clamping bolts 62 into the clamping threaded holes 61.

[0034] according to Figure 1 , 2 As shown, in any embodiment, the clamping threaded holes 61 on one side of the frame 3 are a plurality of evenly spaced holes. The difference from other embodiments is that the frame 3 has multiple sets of clamping threaded holes 61 on one side, allowing the relative position of the clamping plate 2 to be adjusted as needed by using different clamping threaded holes 61.

[0035] according to Figure 4 , 5 As shown, in any embodiment, the pressure plate 6 is provided with at least two positioning protrusions 63 or positioning grooves 24, and the contact surface between the clamping plate 2 and the pressure plate 6 is provided with multiple sets of positioning grooves 24 or positioning protrusions 63 that match the positioning protrusions 63 or positioning grooves 24. The difference from other embodiments is that when the pressure plate 6 presses against the clamping plate 2, the positioning protrusions 63 and positioning grooves 24 need to be aligned to achieve positioning and fixing.

[0036] according to Figure 2 As shown, in any embodiment, one end of the clamping plate 2 is provided with a stepped surface 25. The difference from other embodiments is that when the clamping plate 2 is installed on the frame 3, the two surfaces of the stepped surface 25 are respectively in contact with the two surfaces of the frame 3, which can also realize the positioning and limiting functions of the clamping plate 2.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pinion cutter profile line cutting jig, characterized by, The fixture includes a clamping mandrel (1) and a clamping plate (2). The clamping plate (2) is mounted on a frame (3). The clamping plate (2) is provided with a limiting groove (21). One end of the clamping mandrel (1) is provided with a limiting block (11) that matches the limiting groove (21), and the other end is provided with a locking thread (12). The locking thread (12) is provided with a locking nut (13) that matches it. An installation part (15) is provided between the limiting block (11) and the locking thread (12).

2. A pinion cutter profile line cutting jig according to claim 1, wherein The limiting block (11) is provided with a baffle (14) on the side near the locking thread (12).

3. A pinion cutter profile line cutting jig according to claim 1, wherein It also includes an expansion sleeve (8), an expansion slider (81) is provided on the inner side of the expansion sleeve (8), and an expansion groove (151) matching the expansion slider (81) is provided on the mounting part (15).

4. A pinion cutter profile line cutting jig according to claim 1 wherein, The limiting groove (21) and the limiting block (11) are centrally symmetrical.

5. A pinion cutter profile line cutting jig according to claim 1 wherein, The clamp plate (2) has a fastening threaded hole (22) on one side perpendicular to the axis of the limiting groove (21), and a matching fastening bolt (23) is provided on the fastening threaded hole (22).

6. A pinion cutter profile line cutting jig according to claim 1 wherein, It also includes a locking washer (4), which is fitted on the clamping mandrel (1) and positioned between the locking nut (13) and the gear cutter (5) to be processed, which is also fitted on the clamping mandrel (1).

7. A pinion cutter profile line cutting jig according to claim 1 wherein, It also includes a pressure plate (6), on both sides of the pressure plate (6) at least two clamping threaded holes (61), and on one side of the frame (3) at least two clamping threaded holes (61) are also provided. The spacing between the clamping threaded holes (61) is greater than the width of the clamp plate (2), and clamping bolts (62) are inserted into the clamping threaded holes (61).

8. A pinion cutter profile line cutting jig according to claim 7 wherein, The clamping threaded holes (61) on one side of the frame (3) are multiple and evenly spaced.

9. A pinion cutter profile line cutting jig according to claim 7 or 8, wherein, The pressure plate (6) is provided with at least two positioning protrusions (63) or positioning grooves (24), and the contact surface between the clamp plate (2) and the pressure plate (6) is provided with multiple sets of positioning grooves (24) or positioning protrusions (63) that match the positioning protrusions (63) or positioning grooves (24).

10. A pinion cutter profile line cutting jig according to claim 7 or 8, wherein, One end of the clamp plate (2) is provided with a stepped surface (25).

Images