A gear shaving machine based on a cylindrical cutter

Abstract

The utility model provides a kind of shaving machine tool based on cylindrical cutter, including bed, the top of bed is slidably installed with stand by radial feed device, and the slide base is slidably installed with the slide base on stand by axial feed device, the slide base is rotatably installed with slide plate on slide base by angle adjustment mechanism, the main shaft is slidably installed with slide plate by tangential feed device, the output end of main shaft is installed with cylindrical cutter for gear shaving machining, the side of stand and located the top of bed is provided with workbench, and the workbench is used for clamping gear to be processed.This machine tool uses cylindrical cutter as the cutter of shaving machine tool, overcomes the problem of unstable tooth profile and high cost of traditional shaving machine tool using conical cutter for machining.

Description

Technical Field

[0001] This utility model relates to the field of tooth scraping machine technology, and in particular to a tooth scraping machine tool based on a cylindrical cutting tool. Background Technology

[0002] Traditional gear scraping machines use conical cutting tools. Conical cutting tools have a clearance angle, and their biggest drawback is that as the cutting tip is ground, the diameter decreases, resulting in unstable tooth profiles and a short effective grinding length, leading to a low overall tool life. Cylindrical cutting tools maintain a consistent diameter before and after grinding, producing stable tooth profiles, a long effective grinding length, and a long tool life. However, cylindrical cutting tools lack a clearance angle in their design, requiring the gear scraping machine to adjust and control the tool's tilt angle and tangential position during machining to create a larger clearance angle between the tool and the workpiece at the cutting point, thus completing the machining of internal and external gears. Therefore, the gear scraping machine needs to be modified and adjusted accordingly to meet the requirements of machining with cylindrical cutting tools. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a gear scraping machine tool based on a cylindrical cutter. This machine tool uses a cylindrical cutter as the cutting tool, which overcomes the problems of unstable tooth profile and high cost of traditional gear scraping machine tools using conical cutters. By adjusting and controlling the tilt angle and tangential position of the cylindrical cutter during processing, the tool and the workpiece form a certain cutting clearance angle at the cutting point, thus completing the processing of internal and external gears. The processing accuracy is more stable and the tool life is longer.

[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A gear scraping machine tool based on a cylindrical cutting tool includes a bed, a column slidably mounted on the top of the bed via a radial feed device, a slide mounted on the column via an axial feed device, a slide plate rotatably mounted on the slide plate via a tilting angle adjustment mechanism, a spindle slidably mounted on the slide plate via a tangential feed device, a cylindrical cutting tool for gear scraping is mounted at the output end of the spindle, and a worktable is provided on the side of the column and at the top of the bed for clamping the gear to be processed.

[0005] Preferably, the radial feed device includes a radial feed motor fixed to one end of the top of the bed, the output shaft of the radial feed motor is connected to a radial feed screw, the radial feed screw and the column form a screw drive cooperation and drive it to move radially X along the bed.

[0006] Preferably, the axial feed device includes an axial feed motor fixed to the top of the column, the output shaft of the axial feed motor is connected to an axial feed screw, the axial feed screw and the slide form a screw drive cooperation and drive it to move vertically Z along the column.

[0007] Preferably, the angle adjustment mechanism includes an angle adjustment rotary motor fixed to the top of the slide block. The output shaft of the angle adjustment rotary motor is connected to the slide block worm gear. The slide block worm gear and the slide block worm wheel form a worm gear transmission. The slide block worm wheel is fixedly connected to the slide plate and drives the slide plate to rotate around the rotation center synchronously through the rotation of the slide block worm wheel.

[0008] Preferably, the tangential feed device includes a tangential feed motor fixed on the slide plate, the output shaft of the tangential feed motor is connected to a tangential feed screw, the tangential feed screw and the main shaft form a screw drive cooperation and drive it to move tangentially Y along the outer wall of the slide plate.

[0009] The present invention has the following beneficial effects:

[0010] 1. This utility model can be widely applied to the machining of internal and external gears using cylindrical cutting tools on gear scraping machines. By adjusting and controlling the tilt angle and tangential position of the cutting tool during machining, a certain cutting clearance angle is formed between the cutting tool and the workpiece at the cutting point, thus completing the machining of internal and external gears. The machining tooth profile accuracy is more stable and reliable, reducing the requirements for machine tool operation, while also extending the tool life and reducing machine tool processing costs.

[0011] 2. Radial adjustment can be achieved through the radial feed device.

[0012] 3. The axial height can be adjusted by the axial feed device described above.

[0013] 4. The above-mentioned angle adjustment mechanism can be used to adjust the rotation angle, thereby adjusting the machining angle of the cylindrical tool 13.

[0014] 5. The tangential feed device described above can be used to adjust the tangential position of the cylindrical tool during subsequent machining processes. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is the front view of the present utility model.

[0017] Figure 2 This is the left view of the present invention.

[0018] Figure 3 This is a diagram showing the rotation adjustment state of the cylindrical cutting tool of this utility model.

[0019] Figure 4 This is a schematic diagram of the cutting principle of this utility model.

[0020] Figure 5 This is a diagram of the cutting process of this utility model.

[0021] In the diagram: 1. Bed; 2. Worktable; 3. Gear; 4. Radial feed motor; 5. Radial feed screw; 6. Column; 7. Slide; 8. Axial feed screw; 9. Slide worm gear; 10. Angle-shifting rotary motor; 11. Axial feed motor; 12. Cylindrical cutting tool; 13. Spindle; 14. Slide plate; 15. Tangential feed motor; 16. Tangential feed screw; 17. Rotation center; 18. Workpiece axis; 19. Top circle center point; 20. Projection curve A; 21. Cutting point; 22. Projection curve B; 23. Workpiece tooth top circle center point; 24. Detailed Implementation

[0022] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0023] Example 1:

[0024] See Figure 1-5 A gear scraping machine tool based on a cylindrical cutting tool includes a bed 1. A column 6 is slidably mounted on the top of the bed 1 via a radial feed device. A slide 7 is slidably mounted on the column 6 via an axial feed device. A slide plate 15 is rotatably mounted on the slide plate 7 via a tilting angle adjustment mechanism. A spindle 14 is slidably mounted on the slide plate 15 via a tangential feed device. A cylindrical cutting tool 13 for gear scraping is mounted at the output end of the spindle 14. A worktable 2 is provided on the side of the column 6 and on the top of the bed 1, for clamping the gear 3 to be processed. This gear scraping machine tool can be used to process internal and external gears using cylindrical cutting tools. The cylindrical cutting tool has no back angle in its structural design. By adjusting and controlling the tilt angle and tangential position of the cutting tool during processing, a certain cutting back angle is formed between the cutting tool and the workpiece at the cutting point, thus completing the processing of internal and external gears. This overcomes the problems of unstable tooth profiles and high costs associated with traditional gear scraping machine tools using conical cutting tools, resulting in more stable processing accuracy and longer tool life.

[0025] In the specific processing, the column 6 can be moved horizontally on the machine body through the axial feed device, the rotation angle of the slide plate 15 can be adjusted through the angle adjustment mechanism, and the tangential position of the cylindrical tool 13 can be adjusted through the tangential feed device.

[0026] Furthermore, the radial feed device includes a radial feed motor 4 fixed to one end of the top of the bed 1. The output shaft of the radial feed motor 4 is connected to a radial feed lead screw 5. The radial feed lead screw 5 and the column 6 form a lead screw transmission engagement, driving the column 6 to move radially X along the bed 1. Radial adjustment can be achieved through the radial feed device. During operation, when feed is required, the radial feed motor 4 is started, driving the radial feed lead screw 5, which in turn drives the column 6, causing the column 6 to move along the machine body, thereby achieving feed adjustment.

[0027] Furthermore, the axial feed device includes an axial feed motor 12 fixed to the top of the column 6. The output shaft of the axial feed motor 12 is connected to an axial feed screw 8. The axial feed screw 8 and the slide 7 form a screw drive engagement, driving the slide 7 to move vertically along the column 6 in the Z direction. The axial feed device described above enables axial height adjustment. During operation, when height adjustment is required, the axial feed motor 12 is started, driving the axial feed screw 8, which in turn drives the slide 7 to achieve vertical lifting and lowering adjustment along the column 6.

[0028] Furthermore, the angle adjustment mechanism includes an angle adjustment rotary motor 11 fixed to the top of the slide block 7. The output shaft of the angle adjustment rotary motor 11 is connected to the slide block worm gear 10. The slide block worm gear 10 and the slide block worm wheel 9 form a worm gear transmission. The slide block worm wheel 9 is fixedly connected to the slide plate 15, and the rotation of the slide block worm wheel 9 synchronously drives the slide plate 15 to rotate around the rotation center 18. Through the above-mentioned angle adjustment mechanism, the rotation angle can be adjusted, thereby adjusting the machining angle of the cylindrical tool 13. During operation, when it is necessary to adjust the machining angle of the cylindrical tool 13, the angle adjustment rotary motor 11 is started. The angle adjustment rotary motor 11 drives the slide block worm gear 10, which in turn drives the slide block worm wheel 9. The slide block worm wheel 9 then drives the slide plate 15 to rotate around the rotation center 18, thereby driving the corresponding spindle 14 to rotate, thus achieving the purpose of adjusting the machining angle of the cylindrical tool 13.

[0029] Furthermore, the tangential feed device includes a tangential feed motor 16 fixed on the slide plate 15. The output shaft of the tangential feed motor 16 is connected to a tangential feed lead screw 17. The tangential feed lead screw 17 and the main shaft 14 form a lead screw transmission engagement, driving the main shaft 14 to move tangentially along the outer wall of the slide plate 15 in the Y direction. This tangential feed device can be used to adjust the tangential position of the cylindrical tool 13 during subsequent machining processes. Specifically, during adjustment, the tangential feed motor 16 is started, which drives the tangential feed lead screw 17. The tangential feed lead screw 17 drives the main shaft 14 to slide, thereby driving the corresponding cylindrical tool 13 through the main shaft 14 to achieve tangential adjustment.

[0030] Example 2:

[0031] The method for gear machining using a gear scraping machine tool based on a cylindrical cutting tool includes the following steps:

[0032] Step 1, Adjusting the rotation angle of the cylindrical cutter 13:

[0033] The angle-shifting rotary motor 11 drives the slide worm gear 10 to rotate, the slide worm gear 10 drives the slide worm wheel 9 to rotate, and the slide worm wheel 9 drives the slide plate 15, the main shaft 14, and the cylindrical cutter 13 to rotate around the rotation center 18 by an angle A1.

[0034] Step 2, Adjustment of the tangential distance of the cylindrical cutter 13:

[0035] The tangential feed motor 16 drives the spindle 14 and the cylindrical cutter 13 to move linearly along the Y direction through the tangential feed screw 17, so that the distance between the center point 20 of the tooth tip circle of the cylindrical cutter 13 and the workpiece axis 19 is Y1.

[0036] Step 3, Adjustment of the radial distance of the cylindrical cutter 13:

[0037] The radial feed motor 4 drives the column 6, spindle 14, and cylindrical cutter 13 to move linearly along the X direction through the radial feed screw 5, so that the distance between the center point 20 of the tooth tip circle of the cylindrical cutter 13 and the workpiece axis 19 is X1.

[0038] Step 4: Through the above actions, the projection curve A21 of the tooth tip circle of the cylindrical cutter 13 on the horizontal plane is made tangent to the projection curve B23 of the tooth tip circle of the gear 3 to be processed on the horizontal plane. The tangent position is the cutting point 22.

[0039] Step 5: Draw a cross section from the line connecting the cutting point 22 and the center point 24 of the workpiece tooth tip circle. The cylindrical tool 13 and the gear to be processed 3 form a back angle at the cutting point 22, and the back angle angle is θ.

[0040] Step 6: By controlling the X and Y axes of the machine tool in tandem, the cylindrical tool 13 is cyclically machined along the Kappa angle.

[0041] The Kappa angle is the angle between the line connecting the cutting point 22 and the center point 24 of the workpiece tooth tip circle and the X-axis.

Claims

1. A tooth scraping machine tool based on a cylindrical cutting tool, characterized in that, The machine includes a bed (1), a column (6) is slidably mounted on the top of the bed (1) via a radial feed device, a slide (7) is slidably mounted on the column (6) via an axial feed device, a slide plate (15) is rotatably mounted on the slide plate (7) via a lifting angle adjustment mechanism, a spindle (14) is slidably mounted on the slide plate (15) via a tangential feed device, a cylindrical tool (13) for gear scraping is mounted on the output end of the spindle (14), and a worktable (2) is provided on the side of the column (6) and on the top of the bed (1), and the worktable (2) is used to clamp the gear (3) to be processed. The angle adjustment mechanism includes an angle adjustment rotary motor (11) fixed on the top of the slide (7). The output shaft of the angle adjustment rotary motor (11) is connected to the slide worm (10). The slide worm (10) and the slide worm wheel (9) form a worm gear transmission. The slide worm wheel (9) is fixedly connected to the slide plate (15). The slide plate (15) is driven to rotate around the rotation center (18) synchronously by the rotation of the slide worm wheel (9). The tangential feed device includes a tangential feed motor (16) fixed on the slide plate (15). The output shaft of the tangential feed motor (16) is connected to a tangential feed screw (17). The tangential feed screw (17) and the main shaft (14) form a screw drive cooperation and drive it to move tangentially along the outer wall of the slide plate (15).

2. The gear scraping machine tool based on a cylindrical cutting tool according to claim 1, characterized in that: The radial feed device includes a radial feed motor (4) fixed at one end of the top of the bed (1). The output shaft of the radial feed motor (4) is connected to a radial feed screw (5). The radial feed screw (5) and the column (6) form a screw drive cooperation and drive it to move radially X along the bed (1).

3. The gear scraping machine tool based on a cylindrical cutting tool according to claim 1, characterized in that: The axial feed device includes an axial feed motor (12) fixed at the top of the column (6). The output shaft of the axial feed motor (12) is connected to an axial feed screw (8). The axial feed screw (8) and the slide (7) form a screw drive cooperation and drive it to move vertically Z along the column (6).

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