Machine tool for worm machining
By enabling multiple milling operations in a single clamping of a worm gear machining machine, the problem of reduced accuracy caused by multiple clampings of the worm gear workpiece is solved, thereby improving machining accuracy and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LULIAN TRANSMISSION TECHNOLOGY (ZHENGZHOU) CO LTD
- Filing Date
- 2025-08-30
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing technology, the machining accuracy of worm gear workpieces is reduced due to multiple clamping during the machining process, making it difficult to guarantee the form and position tolerances and resulting in low production efficiency.
Design a machine tool for worm gear machining, which can perform multiple milling operations in one clamping. By combining a rotary shaft, a displacement transmission structure and a power structure, the outer circle, circular arc groove and end face dimensions of the worm gear workpiece can be machined simultaneously, eliminating the error of multiple clamping.
This improved the machining accuracy and production efficiency of worm gear workpieces, ensured dimensional and positional tolerances, and enabled efficient machining of worm gear workpieces.
Smart Images
Figure CN224587118U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of worm gear processing equipment technology, specifically to a machine tool for worm gear processing. Background Technology
[0002] Worm gears are commonly used to transmit motion and power between two intersecting shafts. They typically mesh with a worm shaft, and the worm gear and worm shaft act as a gear and rack in their intermediate plane. Worm gear and worm shaft mechanisms are often used in applications where two shafts intersect, the transmission ratio is large, the transmission power is high, or the operation is intermittent. During the manufacturing process of a worm gear, it needs to be milled according to the design requirements using a milling structure. The milling structure's motor drives the milling cutter to rotate, thus machining the worm gear. The outer diameter, thickness, and outer ring groove of the worm gear must meet the design requirements.
[0003] Existing technologies require different milling structures for machining the outer diameter, thickness, and outer ring groove of worm gear workpieces. Therefore, the worm gear workpieces need to be clamped multiple times, which leads to reduced machining accuracy, difficulty in guaranteeing the form and position tolerances of the worm gear workpieces, and low production efficiency. Summary of the Invention
[0004] This invention addresses the problem of reduced machining accuracy in worm gear workpieces due to multiple clamping operations in existing technologies by providing a worm gear machining machine tool. This machine tool allows for milling of worm gear workpieces, enabling multiple milling processes to be completed with only one clamping, eliminating errors caused by multiple clamping operations, improving the machining accuracy of worm gears, ensuring the form and position tolerances of worm gear workpieces, and increasing production efficiency.
[0005] To achieve the above objectives, the technical solution of this utility model is: a machine tool for worm gear machining, comprising a bed and a power structure. A rotating shaft is longitudinally rotatably mounted at one end of the bed. A worktable located at the top of the bed is fixedly sleeved on the rotating shaft. A worm gear limiting component is provided at the upper end of the rotating shaft, and the power structure is connected to the lower end. The worm gear limiting component is used to clamp and fix the worm gear workpiece on the rotating shaft. The power structure drives the rotating shaft to rotate, so that the worm gear workpiece follows the rotating shaft in a circular motion.
[0006] The machine bed is equipped with displacement transmission structures on its top and both sides. These structures are connected to mounting bases, on which the power structure is mounted. Two opposing mounting bases each have a rotating external cylindrical milling assembly and a rotating annular groove milling assembly, respectively. A longitudinally rotating end-face milling assembly is mounted on the other mounting base. The displacement transmission structures drive the mounting bases to move laterally. The three mounting bases can respectively drive the external cylindrical milling assembly, the rotating annular groove milling assembly, and the end-face milling assembly, allowing for positional adjustments to achieve milling of worm gear workpieces of different sizes.
[0007] The external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly are arranged sequentially around the rotation axis, and each assembly is connected to the power structure. The power structure provides power for the milling of the worm gear workpiece by the external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly. The external cylindrical milling assembly processes the outer cylindrical dimension of the worm gear workpiece, the annular groove milling assembly processes the outer arc groove of the worm gear workpiece, and the end face milling assembly processes the end face dimension of the worm gear workpiece.
[0008] Furthermore, the power structure includes a drive motor, a drive pulley, a transmission belt, and a driven pulley. The drive pulley is connected to the output end of the drive motor, and the transmission belt is sleeved on the drive pulley and the driven pulley. The output end of the drive motor drives the drive pulley to rotate, and the drive pulley drives the driven pulley to rotate synchronously via the transmission belt.
[0009] Furthermore, the drive motor is provided at one end of the bed. The bed has a hollow interior and is open at one end. The lower end of the rotating shaft extends into the interior of the bed and is connected to the driven wheel. When the driven wheel rotates through the transmission belt and the driving wheel, it can drive the rotating shaft to rotate simultaneously, thereby achieving the effect of the rotating shaft driving the worm gear workpiece to rotate in a circular motion.
[0010] Furthermore, the upper part of the rotating shaft is provided with an external thread, and there are two worm gear limiting components, which are locking nuts. The locking nuts are detachably connected to the rotating shaft via threads. By utilizing the cooperation between the two locking nuts and the external threads of the rotating shaft, the worm gear workpiece to be processed is clamped and fixed on the rotating shaft.
[0011] Furthermore, the displacement transmission structure includes a support platform, a transmission assembly, and a slide. The support platform is fixedly connected to the bed, and reinforcing plates are fixedly installed between the two opposing support platforms and the bed. The slide is slidably mounted on top of the support platform. The top of the support platform is provided with spaced-apart sliding grooves, and the bottom of the slide is provided with sliders that match the sliding grooves. The reinforcing plates provide a stable and reinforced connection between the support platform and the bed, and the sliding of the slide slide is facilitated by the cooperation between the slider and the sliding grooves at the bottom of the slide.
[0012] Furthermore, the transmission assembly includes a motor base, a servo motor, and a lead screw. The motor base is fixedly mounted at the end of the support platform. The servo motor is located outside the motor base, and its output end is connected to the lead screw. The lead screw drives the slide table, and the mounting base is fixedly mounted on the top of the slide table. The servo motor drives the lead screw to rotate, causing the lead screw to move the slide table, which in turn moves the mounting base. This allows for the adjustment of the positions of the external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly, facilitating the milling of the worm gear workpiece.
[0013] Furthermore, the external milling assembly includes a drive shaft, a milling cutter power head, and an external milling cutter. The drive shaft is rotatably connected to the mounting base. The two ends of the drive shaft are respectively connected to the milling cutter power head and a power structure. The end of the milling cutter power head near the rotating shaft is connected to the external milling cutter. The power structure provides power for the rotation of the external milling assembly, driving the drive shaft to rotate. The drive shaft, through the milling cutter power head, drives the external milling cutter to rotate, and the external milling cutter machines the outer diameter of the worm gear workpiece.
[0014] Furthermore, the annular groove milling assembly includes a second drive shaft, a second milling cutter power head, and an annular groove milling cutter. The second drive shaft is rotatably connected to the mounting base. The two ends of the second drive shaft are respectively connected to the second milling cutter power head and a power structure. The end of the second milling cutter power head near the rotating shaft is connected to the annular groove milling cutter. The power structure provides power for the rotation of the annular groove milling assembly, driving the second drive shaft to rotate. The second drive shaft, through the second milling cutter power head, drives the annular groove milling cutter to rotate, and the annular groove milling cutter machines the outer arc-shaped annular groove of the worm gear workpiece.
[0015] Furthermore, a groove is provided inside the mounting base located above the machine bed; the end milling assembly includes a third drive shaft and two end mills. The third drive shaft is rotatably connected to the mounting base and its upper end is connected to the power structure. The end mills are keyed to the third drive shaft and located within the groove. A pad fitted on the third drive shaft is provided between the end mill and the mounting base, and between the two end mills. The power structure provides power for the rotation of the end milling assembly, driving the third drive shaft to rotate. The third drive shaft drives the end mills to rotate, and the end mills machine the end face dimensions of the worm gear workpiece. By adjusting the thickness of the pads, the end mills can machine the end face dimensions of worm gear workpieces of different specifications.
[0016] The beneficial effects of this utility model through the above technical solution are as follows: This utility model has a reasonable structure and good performance. It can perform milling operations on worm gear workpieces by clamping the workpiece only once, and can complete multiple milling processes. It can complete the machining of the outer circle dimension, arc groove and end face dimension of the worm gear workpiece, eliminate the error caused by clamping the worm gear workpiece multiple times, improve the machining accuracy of the worm gear workpiece, ensure the form and position tolerance of the worm gear workpiece, and improve production efficiency.
[0017] This utility model provides power to the outer diameter milling assembly, the annular groove milling assembly, and the end face milling assembly for milling the worm gear workpiece through a power structure. The rotation of the outer diameter milling assembly realizes the machining of the outer diameter of the worm gear workpiece, the rotation of the annular groove milling assembly realizes the machining of the outer arc groove of the worm gear workpiece, and the rotation of the end face milling assembly realizes the machining of the end face of the worm gear workpiece.
[0018] This invention uses a displacement transmission structure to drive the mounting base to move laterally, which in turn drives the external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly to move laterally. The positions of the external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly are adjusted, and the external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly move in the direction of the rotation axis, so as to achieve the effect of milling worm gear workpieces of different specifications and sizes.
[0019] This invention uses a worm gear limiting component on the upper part of a rotating shaft to clamp and fix the worm gear workpiece, and drives the rotating shaft to rotate through a power structure. This causes the rotating shaft to drive the worm gear workpiece to rotate in a circle. During the circumferential rotation of the worm gear workpiece, the outer circle dimension, the arc groove, and the end face dimension of the worm gear workpiece are processed in one operation, eliminating the error of multiple clamping operations, ensuring the form and position tolerance of the worm gear workpiece, and improving the machining accuracy and production efficiency of the worm gear. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a machine tool for machining worm gears according to this utility model. Figure 1; Figure 2 This is a schematic diagram of the structure of a machine tool for machining worm gears according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a machine tool for machining worm gears according to this utility model. Figure 3 ; Figure 4 This is a schematic diagram of the structure of a machine tool for machining worm gears according to this utility model. Figure 4 .
[0021] The labels in the attached diagram are as follows: 1 is the bed, 2 is the worktable, 3 is the rotary shaft, 4 is the lock nut, 5 is the support platform, 6 is the reinforcing plate, 7 is the slide groove, 8 is the slide table, 9 is the mounting base, 10 is the groove, 11 is the motor base, 12 is the servo motor, 13 is the lead screw, 14 is the first drive shaft, 15 is the first milling cutter power head, 16 is the external milling cutter, 17 is the second drive shaft, 18 is the second milling cutter power head, 19 is the annular groove milling cutter, 20 is the third drive shaft, 21 is the end mill, 22 is the drive motor, 23 is the driving pulley, 24 is the transmission belt, and 25 is the driven pulley. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-4 As shown, a worm gear machining machine tool includes a bed 1 and a power structure. A rotating shaft 3 is longitudinally rotatable at one end of the bed 1. A worktable 2 located on the top of the bed 1 is fixedly sleeved on the rotating shaft 3. A worm gear limiting member is provided at the upper end of the rotating shaft 3, and the power structure is connected to the lower end. In this embodiment, the worm gear limiting member serves to limit and fix the worm gear workpiece. The worm gear workpiece can be clamped and fixed at the upper end of the rotating shaft 3 by two worm gear limiting members, and the worm gear workpiece is clamped and fixed between the two worm gear limiting members. The power structure provides power for the rotation of the rotating shaft 3, driving the rotating shaft 3 to rotate, and the rotating shaft 3 drives the worktable 2 and the worm gear workpiece on its upper end to rotate.
[0023] The bed 1 is equipped with displacement transmission structures on its top and both sides. These structures are connected to mounting bases 9, which house the power structure. Two opposing mounting bases 9 are respectively equipped with an external cylindrical milling assembly and an annular groove milling assembly, with the external cylindrical milling assembly and the annular groove milling assembly positioned opposite each other. A longitudinally rotating end-face milling assembly is mounted on another mounting base 9. In this embodiment, three displacement transmission structures are used. These structures drive the mounting bases 9 to perform lateral movements, thereby causing the three mounting bases 9 to respectively drive the external cylindrical milling assembly, the annular groove milling assembly, and the end-face milling assembly to move laterally. These components move towards the rotation axis 3, achieving the milling of worm gear workpieces and the milling of worm gear workpieces of different sizes.
[0024] The end milling assembly is located between the outer diameter milling assembly and the annular groove milling assembly. The included angle between the end milling assembly and both the outer diameter milling assembly and the annular groove milling assembly is 90°. According to the design requirements of the worm gear workpiece, the outer diameter milling assembly processes the outer diameter of the worm gear workpiece, the annular groove milling assembly processes the outer arc groove of the worm gear workpiece, and the end milling assembly processes the end face of the worm gear workpiece. When the worm gear workpiece rotates one revolution with the rotating shaft 3, the outer diameter, arc groove, and end face of the worm gear workpiece are processed in one go, eliminating the error of multiple clamping and improving the machining accuracy of the worm gear workpiece.
[0025] The external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly are arranged sequentially around the rotation axis 3, and each assembly is connected to the power structure. In this embodiment, the three power structures drive the external cylindrical milling assembly, the annular groove milling assembly, and the end face milling assembly to rotate, thereby realizing the milling of the worm gear workpiece.
[0026] The power structure includes a drive motor 22, a drive pulley 23, a transmission belt 24, and a driven pulley 25. The drive pulley 23 is connected to the output end of the drive motor 22, and the transmission belt 24 is sleeved on the drive pulley 23 and the driven pulley 25. In this embodiment, the output end of the drive motor 22 drives the drive pulley 23 to rotate, and the drive pulley 23 drives the driven pulley 25 to rotate through the transmission belt 24.
[0027] The drive motor 22 is provided at one end of the bed 1. The bed 1 has a hollow interior and is open at one end. The lower end of the rotating shaft 3 extends into the interior of the bed 1 and is connected to the driven wheel 25. In this embodiment, the drive motor 22, which drives the rotating shaft 3, is fixed to the end of the bed 1 by a mounting plate. The bed 1 is hollow inside to facilitate the transmission belt 24 being fitted onto the drive wheel 22 and the driven wheel 25 at the lower end of the rotating shaft 3. The rotating shaft 3 is rotatably connected to the bed 1 via bearings. When the drive motor 22 drives the drive wheel 23 to rotate, the drive wheel 23 drives the driven wheel 25 to rotate via the transmission belt 24. The driven wheel 25 drives the rotating shaft 3 to rotate, and the rotating shaft 3 drives the worktable 2 and the worm gear workpiece on top of it to rotate.
[0028] The upper part of the rotating shaft 3 is provided with an external thread. There are two worm gear limiting components, each a locking nut 4, which is detachably threaded to the rotating shaft 3. In this embodiment, the locking nut 4 engages with the external thread on the upper part of the rotating shaft 3 to clamp and fix the worm gear workpiece on the upper part of the rotating shaft 3, allowing the worm gear workpiece to rotate synchronously with the rotating shaft 3, thus facilitating the milling process of the worm gear workpiece. Furthermore, the position of the two locking nuts 4 on the rotating shaft 3 allows for adjustment of the worm gear workpiece height.
[0029] The displacement transmission structure includes a support platform 5, a transmission assembly, and a slide table 8. The support platform 5 is fixedly connected to the bed 1, and a reinforcing plate 6 is fixedly installed between each of the two opposing support platforms 5 and the bed 1. The slide table 8 is slidably mounted on the top of the support platform 5. The top of the support platform 5 is provided with grooves 7 at intervals, and the bottom of the slide table 8 is provided with sliders that match the grooves 7. In this embodiment, the reinforcing plate 6 plays a role in stabilizing and reinforcing the connection between the support platform 5 and the bed 1. The grooves 7 and the sliders are both inverted "T" shaped structures. The sliders are slidably installed in the grooves 7. The top of the support platform 5 has three grooves 7 at equal intervals, and the top of the slide table 8 is equipped with three sliders corresponding to the grooves 7. Through the cooperation of the sliders and the grooves 7, the slide table 8 can slide on the top of the support platform 5, and at the same time, it guides the movement of the slide table 8.
[0030] The transmission assembly includes a motor base 11, a servo motor 12, and a lead screw 13. The motor base 11 is fixedly mounted at the end of the support platform 5. The servo motor 12 is located outside the motor base 11, and its output end is connected to the lead screw 13. The lead screw 13 is connected to the slide table 8. The mounting base 9 is fixedly mounted on the top of the slide table 8. In this embodiment, the transmission assembly drives the slide table 8 to slide on the top of the support platform 5. The servo motor 12 is turned on, and its output end drives the lead screw 13 to rotate. The lead screw 13 drives the slide table 8 to slide on the top of the support platform 5, thereby causing the slide table 8 to move the mounting base 9 laterally.
[0031] The external milling assembly includes a drive shaft 14, a milling cutter power head 15, and an external milling cutter 16. The drive shaft 14 is rotatably connected to the mounting base 9. The two ends of the drive shaft 14 are respectively connected to the milling cutter power head 15 and the power structure. The end of the milling cutter power head 15 near the rotating shaft 3 is connected to the external milling cutter 16. In this embodiment, the drive shaft 14 can be rotatably connected to the mounting base 9 via a bearing. The power structure drive motor 22, which drives the external milling assembly to rotate, is fixed to the top of the mounting base 9 via a mounting plate. When the drive motor 22 is turned on, its output end drives the drive wheel 23 to rotate. The drive wheel 23 drives the driven wheel 25 to rotate via a transmission belt 24. The driven wheel 25 is installed at the end of the drive shaft 14. The driven wheel 25 drives the drive shaft 14 to rotate, and the drive shaft 14 drives the external milling cutter 16 to rotate via the milling cutter power head 15. The rotating external milling cutter 16 performs milling machining on the outer diameter of the worm gear workpiece.
[0032] The annular groove milling assembly includes a second drive shaft 17, a second milling cutter power head 18, and an annular groove milling cutter 19. The second drive shaft 17 is rotatably connected to the mounting base 9. The two ends of the second drive shaft 17 are respectively connected to the second milling cutter power head 18 and the power structure. The end of the second milling cutter power head 18 near the rotating shaft 3 is connected to the annular groove milling cutter 19. In this embodiment, the second drive shaft 17 can be rotatably connected to the mounting base 9 via bearings. The power structure drive motor 22 that drives the annular groove milling assembly to rotate is fixed to the top of the mounting base 9 via a mounting plate. When the drive motor 22 is turned on, its output end drives the drive wheel 23 to rotate. The drive wheel 23 drives the driven wheel 25 to rotate via a transmission belt 24. The driven wheel 25 is installed at the end of the second drive shaft 17. The driven wheel 25 drives the second drive shaft 17 to rotate. The second drive shaft 17 drives the annular groove milling cutter 19 to rotate via the second milling cutter power head 18. The rotating annular groove milling cutter 19 performs milling machining on the outer arc groove of the worm gear workpiece.
[0033] A groove 10 is provided on the inner side of the mounting base 9 located above the bed 1. The end milling assembly includes a drive shaft 20 and two end mills 21. The drive shaft 20 is rotatably connected to the mounting base 9 and its upper end is connected to the power structure. The end mills 21 are keyed to the drive shaft 20 and are located in the groove 10. A pad fitted on the drive shaft 20 is provided between the end mill 21 and the mounting base 9 and between the two end mills 21. In this embodiment, the drive shaft 20 can be rotatably connected to the mounting base 9 via a copper sleeve. The drive shaft 20 and the copper sleeve are clearance-fitted. The drive shaft 20 can be pulled out from the top of the mounting base 9 to replace pads of different thicknesses (not shown in the figure) and adjust the distance between the two end mills 21 to achieve the effect of milling the end face size of worm gear workpieces of different specifications.
[0034] The drive motor 22, which drives the end milling assembly to rotate, is fixed to the rear side of the mounting base 9 by a mounting plate. When the drive motor 22 is turned on, the output end of the drive motor 22 drives the drive wheel 23 to rotate. The drive wheel 23 drives the driven wheel 25 to rotate through the transmission belt 24. The driven wheel 25 is installed at the end of the drive shaft 3 20. The driven wheel 25 drives the drive shaft 3 20 to rotate. The drive shaft 3 20 drives the end mill 21 to rotate. The two rotating end mills 21 realize the milling of the end face dimensions of the worm gear workpiece.
[0035] The working principle of this utility model is as follows: First, the worm gear workpiece to be processed is clamped and fixed on the rotating shaft 3 by two locking nuts 4. After the worm gear workpiece is clamped and fixed, the three displacement transmission structures drive the outer diameter milling assembly, the annular groove milling assembly and the end face milling assembly to move towards the rotating shaft 3 respectively. Specifically, the servo motor 12 is turned on, and the output end of the servo motor 12 drives the lead screw 13 to rotate. The lead screw 13 drives the slide table 8 to slide on the top of the support table 5, thereby causing the slide table 8 to drive the mounting base 9 to move laterally. The three mounting bases 8 drive the outer diameter milling assembly, the annular groove milling assembly and the end face milling assembly to move towards the rotating shaft 3 respectively.
[0036] Three power structures drive the outer diameter milling assembly, the ring groove milling assembly, and the end face milling assembly to rotate, respectively, to mill the worm gear workpiece according to design requirements. The outer diameter milling cutter 16 of the outer diameter milling assembly rotates to mill the outer diameter of the worm gear workpiece, the ring groove milling cutter 19 of the ring groove milling assembly rotates to mill the outer arc groove of the worm gear workpiece, and the end face milling cutter 21 of the end face milling assembly rotates to mill the end face of the worm gear workpiece. Then, the power structure connected to the rotating shaft 3 drives the rotating shaft 3 to rotate, which in turn drives the worktable 2 and the worm gear workpiece on its upper end to rotate. The outer diameter, arc groove, and end face of the worm gear workpiece are milled in one rotation. Multiple processes are completed in one clamping of the worm gear workpiece, eliminating the errors caused by multiple clamping, ensuring the form and position tolerances of the worm gear workpiece, and improving the machining accuracy and production efficiency of the worm gear.
[0037] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.
Claims
1. A machine tool for worm machining, comprising a bed (1) and a power structure, characterized in that, The bed (1) is longitudinally rotatably provided with a rotating shaft (3) at one end, and a worktable (2) located on the top of the bed (1) is fixedly sleeved on the rotating shaft (3). The upper end of the rotating shaft (3) is provided with a worm gear limiting component, and the lower end is connected to the power structure. The bed (1) is provided with a displacement transmission structure on the top and both sides. The displacement transmission structure is connected to the mounting base (9). The power structure is provided on the mounting base (9). An outer circle milling component and an annular groove milling component are respectively rotatably provided on the two opposite mounting bases (9). The outer circle milling component and the annular groove milling component are opposite to each other. An end face milling component is rotatably provided on the other mounting base (9). The outer circle milling assembly, the annular groove milling assembly, and the end face milling assembly are arranged sequentially around the rotation axis (3), and the outer circle milling assembly, the annular groove milling assembly, and the end face milling assembly are all connected to the power structure.
2. A machine tool for machining a worm gear according to claim 1, wherein The power structure includes a drive motor (22), a drive wheel (23), a transmission belt (24), and a driven wheel (25). The drive wheel (23) is connected to the output end of the drive motor (22), and the transmission belt (24) is sleeved on the drive wheel (23) and the driven wheel (25).
3. The machine tool for worm gear machining according to claim 2, characterized in that, The bed (1) is provided with the drive motor (22) at one end. The bed (1) is hollow inside and open at one end. The lower end of the rotating shaft (3) extends into the interior of the bed (1) and is connected to the driven wheel (25).
4. The machine tool for worm gear machining according to claim 1, characterized in that, The upper part of the rotating shaft (3) is provided with an external thread, and there are two worm gear limiting parts. The worm gear limiting parts are locking nuts (4), and the locking nuts (4) are detachably connected to the rotating shaft (3) by threads.
5. A machine tool for worm gear machining according to claim 1, characterized in that, The displacement transmission structure includes a support platform (5), a transmission component and a slide (8). The support platform (5) is fixedly connected to the bed (1). Two support platforms (5) arranged opposite to each other are fixedly provided with reinforcing plates (6) between them and the bed (1). The slide (8) is slidably disposed on the top of the support platform (5). The top of the support platform (5) is provided with grooves (7) at intervals. The bottom of the slide (8) is provided with sliders that match the grooves (7).
6. The machine tool for worm gear machining according to claim 5, characterized in that, The transmission assembly includes a motor base (11), a servo motor (12), and a lead screw (13). The motor base (11) is fixedly mounted at the end of the support platform (5). The servo motor (12) is mounted on the outside of the motor base (11) and its output end is connected to the lead screw (13). The lead screw (13) is connected to the slide (8) via a transmission. The mounting base (9) is fixedly mounted on the top of the slide (8).
7. The machine tool for worm gear machining according to claim 1, characterized in that, The external milling assembly includes a drive shaft (14), a milling cutter power head (15), and an external milling cutter (16). The drive shaft (14) is rotatably connected to the mounting base (9). The two ends of the drive shaft (14) are respectively connected to the milling cutter power head (15) and the power structure. The end of the milling cutter power head (15) near the rotating shaft (3) is connected to the external milling cutter (16).
8. The machine tool for worm gear machining according to claim 1, characterized in that, The annular groove milling assembly includes a second drive shaft (17), a second milling cutter power head (18), and an annular groove milling cutter (19). The second drive shaft (17) is rotatably connected to the mounting base (9). The two ends of the second drive shaft (17) are respectively connected to the second milling cutter power head (18) and the power structure. The end of the second milling cutter power head (18) near the rotating shaft (3) is connected to the annular groove milling cutter (19).
9. A machine tool for machining worm gears according to claim 1, characterized in that, A groove (10) is provided on the inner side of the mounting seat (9) located above the bed (1); the end milling assembly includes a drive shaft three (20) and two end mills (21). The drive shaft three (20) is rotatably connected to the mounting seat (9) and its upper end is connected to the power structure. The end mills (21) are keyed to the drive shaft three (20) and are located in the groove (10). A pad is provided between the end mills (21) and the mounting seat (9) and between the two end mills (21) and is fitted on the drive shaft three (20).