Cutter positioning structure of five-axis numerical control high-speed gear hobbing machine

Abstract

The cutter positioning structure of the five-axis numerical control high-speed gear hobbing machine comprises a machine body and a control box, the control box is fixedly arranged on the outer surface of the machine body, a machine bin is formed in the machine body, and a mounting frame is arranged on the inner wall of the top end of the machine bin through a lifting device. And a driving motor is fixedly mounted in the mounting frame, a rotating rod is fixedly mounted at the output end of the driving motor, and the bottom end of the rotating rod is sleeved with a mounting sleeve. According to the hobbing cutter, the machine body, the machine bin, the mounting frame, the driving motor, the rotating rod, the mounting sleeve, the positioning cutter head, the check block, the rotating disc, the positioning column and other parts are matched, so that the function of preventing the positioning cutter head from being damaged is achieved, the safety of the hobbing cutter is improved, the positioning cutter head can be replaced quickly and conveniently, time and labor are saved, and the working efficiency is improved. And meanwhile, the positioning column and a machined workpiece can be rapidly fixed and positioned, and the practicability of the gear hobbing machine is improved.

Description

A tool positioning structure for a five-axis CNC high-speed gear hobbing machine Technical Field

[0001] This utility model relates to the field of gear hobbing machine technology, and in particular to a tool positioning structure for a five-axis CNC high-speed gear hobbing machine. Background Technology

[0002] The gear hobbing machine is one of the most widely used machine tools in gear processing. It can cut spur gears, helical gears, worm gears, sprockets, etc. It is a gear processing machine tool that uses a hob to process spur gears, helical gears, herringbone gears, and worm gears using the generating method.

[0003] In the prior art, before using a gear hobbing machine to process gears, it is necessary to position the initial position of the positioning cutter head. Most existing positioning methods involve directly lowering the positioning cutter head so that it directly contacts the chassis. This positioning method is too rudimentary and can easily damage the positioning cutter head, reducing the safety of the gear hobbing cutter. At the same time, existing gear hobbing machines are not convenient for replacing the positioning cutter head, which wastes time and effort when replacing the positioning cutter head and reduces the practicality of the gear hobbing machine. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tool positioning structure for a five-axis CNC high-speed gear hobbing machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tool positioning structure for a five-axis CNC high-speed gear hobbing machine, comprising a machine body and a control box. The control box is fixedly mounted on the outer surface of the machine body. A machine compartment is formed inside the machine body. A mounting frame is provided on the inner wall of the top of the machine compartment via a lifting device. A drive motor is fixedly mounted inside the mounting frame. A rotating rod is fixedly mounted on the output end of the drive motor. A mounting sleeve is fitted on the bottom end of the rotating rod. A locking block is fixedly mounted on the inner wall of the mounting sleeve. A positioning tool head is fixedly mounted on the bottom end of the mounting sleeve. A stop block is fixedly mounted on the outer surface of the positioning tool head. A mounting bolt is threadedly connected to the outer surface of the mounting sleeve. A chassis is fixedly mounted on the bottom end of the machine compartment. A turntable is rotatably connected to the upper surface of the chassis. A moving device is provided inside the machine compartment. A tool holder is rotatably connected to the side of the moving device near the positioning tool head. An installation component is provided on the outer surface of the tool holder.

[0006] As a further description of the above technical solution:

[0007] The outer surface of the rotating rod is provided with a slot for sliding connection with the locking block, and the mounting bolt penetrates the outer wall of the mounting sleeve and is inserted into the rotating rod.

[0008] As a further description of the above technical solution:

[0009] The positioning cutter head is inserted into the positioning hole, the stop block abuts against the top of the positioning post, the upper surface of the turntable has a mounting hole, the upper surface of the turntable has a positioning post inserted through the mounting hole, the top of the positioning post has a positioning hole, the upper surface of the turntable has two clamping plates symmetrically arranged, the upper surface of the turntable has two grooves, the inner wall of one groove is rotatably connected to a threaded rod, the threaded rod passes through the inner wall of the groove and extends to the outside of the turntable, the end of the threaded rod away from the turntable is fixedly installed with a rotating block, and the inside of the other groove is fixedly installed with a limit rod.

[0010] As a further description of the above technical solution:

[0011] Both clamping plates are arc-shaped. The outer surface of the threaded rod is provided with a forward thread and a reverse thread. The sidewalls at one end of the two clamping plates are respectively provided with threaded holes that mesh with the forward thread and the reverse thread. The sidewalls at the other end of the two clamping plates are inserted into the limiting rod.

[0012] As a further description of the above technical solution:

[0013] The mounting assembly includes a tool motor and a drive rod. The tool motor is fixedly mounted on the side wall of one end of the tool holder, and the drive rod is fixedly mounted on the output end of the tool motor. The drive rod passes through the outer wall of the tool holder and extends into the interior of the tool holder. A drive plate is fixedly mounted on the end of the drive rod away from the tool motor. A tool roller is provided on the side wall of the drive plate. A rotating shaft is rotatably connected to the side wall of the other end of the tool holder. A positioning rod is inserted into the inner wall of the tool roller. A limit block is fixedly mounted on the outer surface of the positioning rod. A fixing bolt is threadedly connected to the outer surface of the rotating shaft.

[0014] As a further description of the above technical solution:

[0015] The side walls of the rotating shaft, the tool holder, and the drive disc are all provided with slots that are compatible with the positioning rod and the limiting block, and the inner wall of the cutter roller is provided with a limiting groove that is slidably connected to the limiting block.

[0016] As a further description of the above technical solution:

[0017] The fixing bolt passes through the rotating shaft and is inserted into the positioning rod.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, the tool positioning structure of this five-axis CNC high-speed gear hobbing machine, through the cooperation of components such as the machine body, control box, machine compartment, mounting bracket, drive motor, rotating rod, mounting sleeve, clamping block, positioning tool head, stop block, mounting bolt, chassis, turntable, positioning column, clamping plate, groove, threaded rod, rotating block, limit rod, moving device, and tool holder, achieves the function of preventing damage to the positioning tool head. By setting up the stop block and the positioning column with a positioning hole at the top, when positioning the positioning tool head, the positioning tool head is inserted into the positioning hole, and the stop block abuts against the top of the positioning column, thereby preventing damage to the positioning tool head and improving the safety of the gear hobbing cutter. It also allows for quick and convenient replacement of the positioning tool head, saving time and effort. At the same time, it can quickly fix and position the positioning column and the workpiece, improving the practicality of the gear hobbing machine.

[0020] 2. Compared with existing technologies, the tool positioning structure of this five-axis CNC high-speed gear hobbing machine, through the coordination of components such as the tool motor, drive rod, drive disc, tool roller, rotating shaft, positioning rod, limit block and fixing bolt, realizes the function of convenient and quick positioning and installation of the tool roller. It improves the installation method of the tool roller in the existing technology, making it easy to install the tool roller onto the tool holder, saving time and effort, and further improving the practicality of the gear hobbing machine on the original basis. Attached Figure Description

[0021] Figure 1 is a three-dimensional structural diagram of the tool positioning structure of a five-axis CNC high-speed gear hobbing machine proposed in this utility model;

[0022] Figure 2 is a schematic diagram of the machine compartment structure of the tool positioning structure of a five-axis CNC high-speed gear hobbing machine proposed in this utility model;

[0023] Figure 3 is a schematic diagram of the mounting frame structure of the tool positioning structure of a five-axis CNC high-speed gear hobbing machine proposed in this utility model;

[0024] Figure 4 is a schematic diagram of the drive motor structure of the tool positioning structure of a five-axis CNC high-speed gear hobbing machine proposed in this utility model.

[0025] Figure 5 is a schematic diagram of the clamping plate structure of the tool positioning structure of a five-axis CNC high-speed gear hobbing machine proposed in this utility model.

[0026] Figure 6 is a schematic diagram of the mounting assembly structure of the tool positioning structure of a five-axis CNC high-speed gear hobbing machine proposed in this utility model;

[0027] Figure 7 is a schematic diagram of the tool holder structure of a five-axis CNC high-speed gear hobbing machine proposed in this utility model.

[0028] Legend:

[0029] 1. Machine body; 2. Control box; 3. Machine compartment; 4. Mounting bracket; 5. Drive motor; 6. Rotating rod; 7. Mounting sleeve; 8. Clamping block; 9. Positioning cutter head; 10. Stop block; 11. Mounting bolt; 12. Chassis; 13. Turntable; 14. Positioning column; 15. Clamping plate; 16. Groove; 17. Threaded rod; 18. Rotating block; 19. Limiting rod; 20. Moving device; 21. Tool holder; 22. Tool motor; 23. Drive rod; 24. Drive disc; 25. Cutting roller; 26. Rotating shaft; 27. Positioning rod; 28. Limiting block; 29. ​​Fixing bolt. Detailed Implementation

[0030] 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.

[0031] Referring to Figures 1 to 7, the present invention provides a tool positioning structure for a five-axis CNC high-speed gear hobbing machine: It includes a machine body 1 and a control box 2. The control box 2 is fixedly mounted on the outer surface of the machine body 1. A machine compartment 3 is formed inside the machine body 1. A mounting frame 4 is mounted on the inner wall of the top of the machine compartment 3 via a lifting device. A drive motor 5 is fixedly mounted inside the mounting frame 4. A rotating rod 6 is fixedly mounted on the output end of the drive motor 5. A mounting sleeve 7 is fitted onto the bottom end of the rotating rod 6. A locking block 8 is fixedly mounted on the inner wall of the mounting sleeve 7. A slot for sliding connection with the locking block 8 is formed on the outer surface of the rotating rod 6. The bottom end of the mounting sleeve 7... A positioning cutter head 9 is fixedly installed, and a stop block 10 is fixedly installed on the outer surface of the positioning cutter head 9. A mounting bolt 11 is threadedly connected to the outer surface of the mounting sleeve 7. The mounting bolt 11 penetrates the outer wall of the mounting sleeve 7 and is inserted into the rotating rod 6. A chassis 12 is fixedly installed at the bottom of the machine compartment 3. A turntable 13 is rotatably connected to the upper surface of the chassis 12. A mounting hole is opened on the upper surface of the turntable 13. A positioning pin 14 is inserted into the upper surface of the turntable 13 through the mounting hole. A positioning hole is opened at the top of the positioning pin 14. The positioning cutter head 9 is inserted into the positioning hole, and the stop block 10 abuts against the top of the positioning pin 14.

[0032] To facilitate the fixing and positioning of the positioning pin 14 and the workpiece, two clamping plates 15 are symmetrically arranged on the upper surface of the turntable 13. Both clamping plates 15 are arc-shaped. Two grooves 16 are formed on the upper surface of the turntable 13. A threaded rod 17 is rotatably connected to the inner wall of one groove 16. The outer surface of the threaded rod 17 is provided with forward and reverse threads. The side walls at one end of the two clamping plates 15 are respectively provided with threaded holes that mesh with the forward and reverse threads. The threaded rod 17 passes through the inner wall of the groove 16 and extends to the outside of the turntable 13. A rotating block 18 is fixedly installed at the end of the threaded rod 17 away from the turntable 13. A limit rod 19 is fixedly installed inside the other groove 16. The side walls at the other end of the two clamping plates 15 are inserted into the limit rod 19. A moving device 20 is provided inside the machine compartment 3. A tool holder 21 is rotatably connected to the side of the moving device 20 near the positioning cutter head 9.

[0033] By setting up the machine body 1, control box 2, machine compartment 3, mounting bracket 4, drive motor 5, rotating rod 6, mounting sleeve 7, clamping block 8, positioning cutter head 9, stop block 10, mounting bolt 11, chassis 12, turntable 13, positioning column 14, clamping plate 15, groove 16, threaded rod 17, rotating block 18, limit rod 19, moving device 20, and tool holder 21, the function of preventing damage to the positioning cutter head 9 is realized. By setting up the stop block 10 and the positioning column 14 with a positioning hole at the top, when positioning the positioning cutter head 9, the positioning cutter head 9 is inserted into the positioning hole, and the stop block 10 abuts against the top of the positioning column 14, thereby preventing damage to the positioning cutter head 9, improving the safety of the gear hobbing cutter, and also allowing for quick and convenient replacement of the positioning cutter head 9, saving time and effort. At the same time, it can quickly fix and position the positioning column 14 and the workpiece, improving the practicality of the gear hobbing machine.

[0034] The outer surface of the tool holder 21 is provided with a mounting assembly, which includes a tool motor 22 and a drive rod 23. The tool motor 22 is fixedly mounted on the side wall of one end of the tool holder 21, and the drive rod 23 is fixedly mounted on the output end of the tool motor 22. The drive rod 23 passes through the outer wall of the tool holder 21 and extends into the interior of the tool holder 21. A drive disc 24 is fixedly mounted on the end of the drive rod 23 away from the tool motor 22. A cutter roller 25 is provided on the side wall of the drive disc 24. The other side wall of the tool holder 21... A rotating shaft 26 is rotatably connected. A positioning rod 27 is inserted into the inner wall of the cutter roller 25. A limit block 28 is fixedly installed on the outer surface of the positioning rod 27. The side walls of the rotating shaft 26, the cutter holder 21, and the drive plate 24 are all provided with slots that are compatible with the positioning rod 27 and the limit block 28. The inner wall of the cutter roller 25 is provided with a limit groove that is slidably connected to the limit block 28. A fixing bolt 29 is threadedly connected to the outer surface of the rotating shaft 26. The fixing bolt 29 passes through the rotating shaft 26 and is inserted into the positioning rod 27.

[0035] By setting up the cutter motor 22, drive rod 23, drive disc 24, cutter roller 25, rotating shaft 26, positioning rod 27, limit block 28 and fixing bolt 29, the function of convenient and quick positioning and installation of cutter roller 25 is realized, which improves the installation method of cutter roller 25 in the existing technology, making it easy to install cutter roller 25 onto cutter holder 21, saving time and effort, and further improving the practicality of gear hobbing machine on the original basis.

[0036] Working principle: When positioning the positioning cutter head 9, the positioning pin 14 is first inserted into the upper surface of the turntable 13 through the mounting hole. Then, the rotating block 18 is rotated. When the rotating block 18 rotates, it drives the threaded rod 17 to rotate inside the groove 16. Under the action of the limiting rod 19, the two clamping plates 15 move from both ends of the threaded rod 17 to the middle position of the threaded rod 17 along the limiting rod 19. When the arc-shaped inner wall of the two clamping plates 15 reaches the positioning pin 14, the positioning pin 14 is fixed and positioned. Then, the mounting frame 4 is lowered by the lifting device, so that the positioning cutter head 9 is lowered. When the positioning cutter head 9 is inserted into the positioning hole, the stop block 10 abuts against the top of the positioning pin 14, completing the positioning of the positioning cutter head 9.

[0037] After the positioning head 9 is positioned, the mounting bracket 4 and clamping plate 15 return to their original positions. The workpiece is placed on the upper surface of the turntable 13, and the rotating block 18 is rotated to fix and position the workpiece with the clamping plate 15. Then, the mounting bracket 4 is lowered so that the positioning head 9 rests against the top of the workpiece. The drive motor 5 is then started. When the drive motor 5 is running, it drives the mounting sleeve 7 and the positioning head 9 to rotate through the rotating rod 6, thereby causing the workpiece and the turntable 13 to rotate on the upper surface of the chassis 12. Then, the moving device 20 is moved towards the workpiece, and the tilt angle of the tool holder 21 is adjusted by rotation. When the tool holder 21 is tilted to a suitable angle, the tool motor 22 is started. When the tool motor 22 is running, it drives the drive rod 23 and the drive plate 24 to rotate. The drive plate 24 drives the positioning rod 26 and the limit block 28 to rotate, thereby driving the cutter roller 25 to rotate. At the same time, the rotating shaft 26 rotates on the side wall of the tool holder 21. The moving device 20 is continued to move closer to the workpiece. When the blade on the cutter roller 25 contacts the workpiece, the workpiece is processed.

[0038] When replacing the positioning cutter head 9, tighten the mounting bolt 11 so that the mounting bolt 11 extends away from the mounting sleeve 7. After the mounting bolt 11 separates from the rotating rod 6, release the fixing of the mounting sleeve 7, and then pull the mounting sleeve 7 down so that the mounting sleeve 7 slides down on the outer surface of the rotating rod 6. The locking block 8 slides inside the locking groove. After the mounting sleeve 7 separates from the rotating rod 6, the disassembly of the positioning cutter head 9 is completed. Then take out the new positioning cutter head 9 and reverse the above operation to complete the replacement of the positioning cutter head 9.

[0039] When installing the cutter roller 25, first place the cutter roller 25 inside the tool holder 21. Then, insert the positioning rod 26 from the slot of the rotating shaft 27, passing through the rotating shaft 27 and the side wall of the tool holder 21 in sequence, and then insert it into the inside of the cutter roller 25. Finally, slide it into the slot on the drive plate 24, and then tighten the fixing bolt 29 to connect the positioning rod 26 to the rotating shaft 27 to complete the installation. Reverse the above operation to disassemble the cutter roller 25. Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tool positioning structure for a five-axis CNC high-speed gear hobbing machine, comprising a machine body (1) and a control box (2), characterized in that: The control box (2) is fixedly installed on the outer surface of the body (1). The body (1) has a machine compartment (3) inside. The inner wall of the top of the machine compartment (3) is provided with a mounting frame (4) through a lifting device. The mounting frame (4) is fixedly installed with a drive motor (5). The output end of the drive motor (5) is fixedly installed with a rotating rod (6). The bottom end of the rotating rod (6) is fitted with a mounting sleeve (7). The inner wall of the mounting sleeve (7) is fixedly installed with a locking block (8). The bottom end of the mounting sleeve (7) is fixedly installed with a positioning knife. The head (9) has a stop (10) fixedly installed on its outer surface. The mounting sleeve (7) has a mounting bolt (11) threadedly connected to its outer surface. The bottom end of the machine compartment (3) has a chassis (12) fixedly installed. The upper surface of the chassis (12) is rotatably connected to a turntable (13). The machine compartment (3) has a moving device (20) inside. The moving device (20) is rotatably connected to a tool holder (21) on the side of the moving device (20) near the positioning head (9). The outer surface of the tool holder (21) is provided with a mounting component.

2. The tool positioning structure of a five-axis CNC high-speed gear hobbing machine according to claim 1, characterized in that: The outer surface of the rotating rod (6) is provided with a slot for sliding connection with the locking block (8), and the mounting bolt (11) penetrates the outer wall of the mounting sleeve (7). The mounting bolt (11) is inserted into the rotating rod (6).

3. The tool positioning structure of a five-axis CNC high-speed gear hobbing machine according to claim 1, characterized in that: The upper surface of the turntable (13) is provided with mounting holes, and a positioning pin (14) is inserted into the upper surface of the turntable (13) through the mounting holes. The top of the positioning pin (14) is provided with a positioning hole. Two clamping plates (15) are symmetrically arranged on the upper surface of the turntable (13). Two grooves (16) are provided on the upper surface of the turntable (13). A threaded rod (17) is rotatably connected to the inner wall of one of the grooves (16). The threaded rod (17) passes through the inner wall of the groove (16) and extends to the outside of the turntable (13). A rotating block (18) is fixedly installed at the end of the threaded rod (17) away from the turntable (13). A limit rod (19) is fixedly installed inside the other groove (16).

4. The tool positioning structure of a five-axis CNC high-speed gear hobbing machine according to claim 3, characterized in that: The positioning cutter head (9) is inserted into the positioning hole, the stop block (10) abuts against the top of the positioning post (14), the two clamping plates (15) are both arc-shaped, the outer surface of the threaded rod (17) is provided with a forward thread and a reverse thread, the side wall of one end of the two clamping plates (15) is provided with a threaded hole that meshes with the forward thread and the reverse thread, and the side wall of the other end of the two clamping plates (15) is inserted into the limiting rod (19).

5. The tool positioning structure of a five-axis CNC high-speed gear hobbing machine according to claim 1, characterized in that: The mounting assembly includes a tool motor (22) and a drive rod (23). The tool motor (22) is fixedly mounted on the side wall of one end of the tool holder (21). The drive rod (23) is fixedly mounted on the output end of the tool motor (22). The drive rod (23) passes through the outer wall of the tool holder (21) and extends into the interior of the tool holder (21). A drive disc (24) is fixedly mounted on the end of the drive rod (23) away from the tool motor (22). A cutter roller (25) is provided on the side wall of the drive disc (24). A rotating shaft (26) is rotatably connected to the side wall of the other end of the tool holder (21). A positioning rod (27) is inserted into the inner wall of the cutter roller (25). A limit block (28) is fixedly mounted on the outer surface of the positioning rod (27). A fixing bolt (29) is threadedly connected to the outer surface of the rotating shaft (26).

6. The tool positioning structure of a five-axis CNC high-speed gear hobbing machine according to claim 5, characterized in that: The side walls of the rotating shaft (26), the tool holder (21), and the drive plate (24) are all provided with slots that are compatible with the positioning rod (27) and the limiting block (28). The inner wall of the cutter roller (25) is provided with a limiting groove that is slidably connected to the limiting block (28).

7. The tool positioning structure of a five-axis CNC high-speed gear hobbing machine according to claim 5, characterized in that: The fixing bolt (29) passes through the rotating shaft (26), and the fixing bolt (29) is inserted into the positioning rod (27).

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