A numerically controlled hobbing machine and its operation method

Abstract

The present invention discloses a numerically controlled hobbing machine tool and its operation method, including a base, and further including: a rotating table arranged at the top of the base. The moving mechanism includes a sliding plate sliding between a pressing plate and a moving frame, a reinforcing plate installed outside a second hydraulic cylinder and connected to the moving frame, and a rotating assembly arranged inside one side of the moving plate. In the present invention, the second hydraulic cylinder and the auxiliary hydraulic cylinder are used to push the moving plate to move, adjust the height of the tool in the vertical direction, and the driving motor drives the main box body to flip through a worm and a worm gear to adjust the cutting angle of the tool, realizing the function of flexible movement, which helps to reduce the cutting force fluctuation and cutting heat accumulation during the cutting process. At the same time, it can ensure the stability and accuracy of size control during the cutting process, and reduce the size errors and deviations caused by inflexible movement of the tool.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, and in particular to a numerically controlled gear hobbing machine tool and an operating method thereof. Background Art

[0002] Gears are mechanical elements that can continuously mesh to transmit motion and power. They are widely used in mechanical transmission and the entire mechanical field. However, since the processing and manufacturing of gears is a complicated process, CNC gear hobbing machines are required to improve the production efficiency of gears while ensuring the processing accuracy and stability of gears.

[0003] When the CNC gear hobbing machine tool of the prior art is working, the initially processed gear will vibrate when it touches the milling cutter, which can easily cause the grain grinded on the outer side of the gear to deviate, resulting in reduced quality of the produced gear, increased vibration and impact generated when cutting the gear, and further affecting the accuracy of the tooth shape and surface roughness. At the same time, the cutting speed is reduced, thereby extending the processing time, reducing the overall processing efficiency and increasing the production cost;

[0004] Therefore, a CNC gear hobbing machine tool and an operating method thereof are needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the tool movement is not flexible and it is not convenient to automatically load the workpiece, and to propose a CNC gear hobbing machine tool and an operation method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A CNC gear hobbing machine tool comprises a base and also comprises:

[0008] A rotating table is arranged on the top of the base, and a workpiece is arranged on the top of the rotating table;

[0009] A feeding mechanism, arranged on one side of the rotating table, is used for automatically feeding the workpiece;

[0010] A positioning mechanism, arranged on one side of the top end of the base, for fixing the workpiece on the top of the rotating table;

[0011] A second slide rail is installed on both sides of the top of the base, and the top of the second slide rail is slidably connected to a moving frame, and a fourth hydraulic cylinder connected to the base is installed inside one side of the moving frame;

[0012] A protective cover is fixed to one side of the top of the moving frame, and a pressing plate is fixed to one side of the moving frame;

[0013] The moving mechanism is arranged inside one side of the moving frame. Among them, the moving mechanism includes a sliding plate that slides between the pressing plate and the moving frame, a moving plate fixed to one side of the sliding plate, an auxiliary hydraulic cylinder installed at the top of one side of the moving plate and connected to the moving frame, a second hydraulic cylinder installed at the top of the other side of the moving plate, a reinforcing plate installed outside the second hydraulic cylinder and connected to the moving frame, a guide rod slidably connected inside the reinforcing plate and connected to the moving plate, and a rotating assembly arranged inside one side of the moving plate;

[0014] The main box body is arranged on one side of the moving mechanism, and a gear box is installed on one side of the main box body. A knife striking cylinder is installed at the bottom end of one side of the gear box, a tool rod is installed at the bottom end of the other side of the gear box, and a tool is detachably installed on the outside of the tool rod. A main shaft motor is installed at the top end of the other side of the gear box, and a motor protection shell connected to the main box body is sleeved outside the main shaft motor.

[0015] As a preferred technical solution of the present application, the rotating assembly includes a connecting shaft rotatably connected inside the moving plate, a worm wheel installed on the other side of the connecting shaft, a worm installed at the top of one side of the moving plate and meshing with the worm wheel, a driving motor installed on one side of the moving plate and with its rotating end connected to the worm, a ball bearing installed between the moving plate and the connecting shaft, a rotating seat fixed to one side of the connecting shaft and connected to the main box body, and a sliding groove opened on one side inside the rotating seat.

[0016] As a preferred technical solution of the present application, a slide rail matching the sliding groove is arranged on one side of the moving plate, and the sliding groove and the connecting shaft are on the same axis.

[0017] As a preferred technical solution of the present application, there are two groups of the sliding plates, and the sliding plates are symmetrically distributed on the vertical center line of the moving plate.

[0018] As a preferred technical solution of the present application, the feeding mechanism includes a supporting assembly installed at the top end of the base, a material guiding shell arranged at the top of the supporting assembly, a second positioning groove opened on one side of the top end of the material guiding shell, a first positioning groove opened on one side of the bottom end of the material guiding shell, a material storage shell fixed to the top end of the material guiding shell, a pushing block sliding inside one side of the material guiding shell, and a first hydraulic cylinder installed at the bottom end of one side of the material guiding shell and connected to the pushing block.

[0019] As a preferred technical solution of the present application, the supporting assembly includes a supporting seat installed at one side of the top end of the base, an electric sliding table installed at the top of the supporting seat, and a connecting frame fixed to the top of the electric sliding table and connected to the material guiding shell.

[0020] As a preferred technical solution of the present application, an arc-shaped groove matching the side shape of the workpiece is opened on one side of the pushing block, and the electric sliding table drives the material guiding shell to move horizontally through the connecting frame.

[0021] As a preferred technical solution of the present application, the positioning mechanism includes a column installed on one side of the top of the base, a first slide rail installed on one side of the column, a moving seat sliding on the outside of the first slide rail, a third hydraulic cylinder installed inside the top of the column, a mounting block fixed to the bottom end of the third hydraulic cylinder and connected to the moving seat, a pointed rod rotatably connected inside the mounting block, and a lower clamp seat installed on the top of the rotating table.

[0022] As a preferred technical solution of the present application, the pointed rod and the lower clamp seat are located on the same vertical center line, and a rotary bearing is installed between the pointed rod and the mounting block.

[0023] As a preferred technical solution of the present application, it includes the following steps:

[0024] S1: Place the device at the working area position, connect the device to the power supply, and then install the cutting tool on the outside of the tool bar.

[0025] S2: Put the workpiece into the internal part of the feeding mechanism, start the feeding mechanism to automatically feed the workpiece, and at the same time, the positioning mechanism fixes the workpiece moved to the designated position.

[0026] S3: Start the fourth hydraulic cylinder to push the moving frame to slide on the top of the second slide rail, so that the moving frame drives the cutting tool to move towards the workpiece, and makes the workpiece contact the cutting tool.

[0027] S4: Start the main shaft motor, so that the gearbox drives the cutting tool to rotate at a high speed through the tool bar, and perform cutting processing on the workpiece. At the same time, the rotating table can drive the workpiece to rotate to process the four sides of the workpiece.

[0028] S5: Drive the cutting tool to move up and down in the vertical direction through the moving mechanism, and rotate the angle of the cutting tool, so as to process the workpiece from different angles.

[0029] S6: After the processing is completed, control the positioning mechanism to loosen the workpiece, so that the feeding mechanism feeds the unprocessed workpiece, and pushes the processed workpiece down, and repeat the processing operation.

[0030] Compared with the prior art, the present invention provides a numerical control hobbing machine and its operation method, which has the following beneficial effects:

[0031] 1. The second hydraulic cylinder and the auxiliary hydraulic cylinder are used to push the moving plate to move, adjust the height of the cutting tool in the vertical direction, and the drive motor drives the main box body to turn over through the worm and the worm wheel to adjust the cutting angle of the cutting tool, realizing the function of flexible movement, which helps to reduce the cutting force fluctuation and cutting heat accumulation during the cutting process. At the same time, it can ensure the stability and accuracy of size control during the cutting process, and reduce the size error and deviation caused by the inflexible movement of the cutting tool.

[0032] 2. Stack the workpieces through the storage shell, and use the first hydraulic cylinder to push the workpieces to move through the push block for feeding, realizing the automatic feeding function, improving production efficiency and processing quality, reducing labor intensity and costs, and enhancing the competitiveness of the enterprise;

[0033] 3. Push the mounting block downward through the third hydraulic cylinder, insert the pointed rod into the hole groove inside the workpiece, and press and fix the workpiece on the top of the lower clamp seat, realizing the automatic fixing function, facilitating the automatic fixing of the position of the workpiece, and at the same time making the position of the workpiece fixed accurately and not easy to shake. Brief Description of the Drawings

[0034] Figure 1 One of the structural schematic diagrams of a numerical control hobbing machine and its operating method proposed by the present invention;

[0035] Figure 2 Two of the structural schematic diagrams of a numerical control hobbing machine and its operating method proposed by the present invention;

[0036] Figure 3 Three-dimensional structural schematic diagram of the moving mechanism of a numerical control hobbing machine and its operating method proposed by the present invention;

[0037] Figure 4 One of the three-dimensional structural schematic diagrams of the main housing of a numerical control hobbing machine and its operating method proposed by the present invention;

[0038] Figure 5 Two of the three-dimensional structural schematic diagrams of the main housing of a numerical control hobbing machine and its operating method proposed by the present invention;

[0039] Figure 6 Three-dimensional structural schematic diagram of the positioning mechanism of a numerical control hobbing machine and its operating method proposed by the present invention;

[0040] Figure 7 Three-dimensional structural schematic diagram of the rotating table of a numerical control hobbing machine and its operating method proposed by the present invention;

[0041] Figure 8 One of the three-dimensional structural schematic diagrams of the feeding mechanism of a numerical control hobbing machine and its operating method proposed by the present invention;

[0042] Figure 9 Two of the three-dimensional structural schematic diagrams of the feeding mechanism of a numerical control hobbing machine and its operating method proposed by the present invention;

[0043] Figure 10 Three-dimensional sectional structural schematic diagram of the feeding mechanism of a numerical control hobbing machine and its operating method proposed by the present invention.

[0044] In the figure:

[0045] 1. Base; 2. Loading mechanism; 201. Support base; 202. Electric slide table; 203. First positioning groove; 204. Connecting frame; 205. Material guiding shell; 206. Second positioning groove; 207. Material storage shell; 208. First hydraulic cylinder; 209. Pushing block; 3. Rotary table; 4. Pressing plate; 5. Moving mechanism; 501. Second hydraulic cylinder; 502. Reinforcing plate; 503. Moving plate; 504. Driving motor; 505. Worm; 506. Worm gear; 507. Slide plate; 508. Auxiliary hydraulic cylinder; 509. Guide rod; 510. Connecting shaft; 511. Ball bearing; 512. Rotary seat; 513. Chute; 6. Moving frame; 7. Protective cover; 8. Motor protection shell; 9. Main box body; 10. Positioning mechanism; 1001. Column; 1002. Moving seat; 1003. First slide rail; 1004. Pointed rod; 1005. Mounting block; 1006. Third hydraulic cylinder; 1007. Lower clamping seat; 11. Fourth hydraulic cylinder; 12. Second slide rail; 13. Spindle motor; 14. Gear box; 15. Workpiece; 16. Tool rod; 17. Tool; 18. Tool clamping cylinder. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] As Figures 1 to 10 shown, an embodiment of the present invention provides a numerical control hobbing machine, including a base 1, and further including:

[0048] A rotary table 3, arranged at the top of the base 1, and a workpiece 15 is arranged at the top of the rotary table 3;

[0049] A loading mechanism 2, arranged on one side of the rotary table 3, for automatically loading the workpiece 15;

[0050] A positioning mechanism 10, arranged on one side of the top of the base 1, for fixing the workpiece 15 on the top of the rotary table 3;

[0051] A second slide rail 12, installed on both sides of the top of the base 1, and a moving frame 6 is slidably connected to the top of the second slide rail 12. A fourth hydraulic cylinder 11 connected to the base 1 is installed inside one side of the moving frame 6;

[0052] A protective cover 7, fixed on one side of the top of the moving frame 6, and a pressing plate 4 is fixed on one side of the moving frame 6;

[0053] The moving mechanism 5 is arranged inside one side of the moving frame 6. Among them, the moving mechanism 5 includes a sliding plate 507 that slides between the pressing plate 4 and the moving frame 6, a moving plate 503 fixed to one side of the sliding plate 507, an auxiliary hydraulic cylinder 508 installed at the top of one side of the moving plate 503 and connected to the moving frame 6, a second hydraulic cylinder 501 installed at the top of the other side of the moving plate 503, a reinforcing plate 502 installed outside the second hydraulic cylinder 501 and connected to the moving frame 6, a guide rod 509 slidably connected inside the reinforcing plate 502 and connected to the moving plate 503, and a rotating assembly arranged inside one side of the moving plate 503;

[0054] The main box body 9 is arranged on one side of the moving mechanism 5. A gear box 14 is installed on one side of the main box body 9. A tool striking cylinder 18 is installed at the bottom of one side of the gear box 14. A tool rod 16 is installed at the bottom of the other side of the gear box 14. A tool 17 is detachably installed on the outside of the tool rod 16. A main shaft motor 13 is installed at the top of the other side of the gear box 14. A motor protection shell 8 connected to the main box body 9 is sleeved outside the main shaft motor 13.

[0055] The working principle and beneficial effects of the above technical solution are as follows: Place the device at the working area position, connect the device to the power supply. Then, install the tool 17 on the outside of the tool rod 16, put the workpiece 15 into the feeding mechanism 2, and start the feeding mechanism 2 to automatically feed the workpiece 15. At the same time, the positioning mechanism 10 fixes the workpiece 15 that has moved to the designated position. Start the fourth hydraulic cylinder 11 to push the moving frame 6 to slide on the top of the second slide rail 12, so that the moving frame 6 drives the tool 17 to move towards the workpiece 15, making the workpiece 15 contact the tool 17. Start the main shaft motor 13, so that the gear box 14 drives the tool 17 to rotate at a high speed through the tool rod 16 to perform cutting processing on the workpiece 15. At the same time, the rotating table 3 can drive the workpiece 15 to rotate to process the four sides of the workpiece 15. The moving mechanism 5 drives the tool 17 to move up and down in the vertical direction and rotates the angle of the tool 17 to facilitate processing the workpiece 15 from different angles. After the processing is completed, control the positioning mechanism 10 to release the workpiece 15, so that the feeding mechanism 2 feeds the unprocessed workpiece 15 and pushes the processed workpiece 15 down.

[0056] As Figure 3 、 Figure 4 and Figure 5As shown, in one embodiment: The rotating assembly includes a connecting shaft 510 rotatably connected inside the moving plate 503, a worm gear 506 installed on the other side of the connecting shaft 510, a worm 505 installed at the top of one side of the moving plate 503 and meshing with the worm gear 506, a driving motor 504 installed on one side of the moving plate 503 with its rotating end connected to the worm 505, a ball bearing 511 installed between the moving plate 503 and the connecting shaft 510, a rotating seat 512 fixed on one side of the connecting shaft 510 and connected to the main housing 9, and a sliding groove 513 opened on one side inside the rotating seat 512.

[0057] The working principle and beneficial effects of the above technical solution are as follows: By starting the extension of the second hydraulic cylinder 501 and the auxiliary hydraulic cylinder 508, the second hydraulic cylinder 501 and the auxiliary hydraulic cylinder 508 push the moving plate 503 to move. At the same time, the moving plate 503 drives the main housing 9 to move up and down to adjust the height of the cutter 17. Start the driving motor 504 to drive the worm 505 to rotate, so that the worm 505 starts the connecting shaft 510 to rotate inside the moving plate 503 through the worm gear 506, and drives the main housing 9 to flip to adjust the cutting angle of the cutter 17. The friction between the connecting shaft 510 and the moving plate 503 is reduced by the ball bearing 511.

[0058] As Figure 3 、 Figure 4 and Figure 5 shown, in one embodiment: A slide rail matching the sliding groove 513 is provided on one side of the moving plate 503, and the sliding groove 513 and the connecting shaft 510 are on the same axis.

[0059] The working principle and beneficial effects of the above technical solution are as follows: By sliding the sliding groove 513 on one side of the moving plate 503, the rotation of the rotating seat 512 is guided, and the shaking between the main housing 9 and the rotating seat 512 is reduced.

[0060] As Figure 3 、 Figure 4 and Figure 5 shown, in one embodiment: Two sets of sliding plates 507 are provided, and the sliding plates 507 are symmetrically distributed on the vertical center line of the moving plate 503.

[0061] The working principle and beneficial effects of the above technical solution are as follows: By sliding the left and right two sets of sliding plates 507 between the moving frame 6 and the pressing plate 4, one side of the moving plate 503 is guided, so that the moving plate 503 can only move vertically.

[0062] As Figure 8 、 Figure 9 and Figure 10As shown, in one embodiment: The feeding mechanism 2 includes a support assembly installed at the top end of the base 1, a material guiding shell 205 arranged at the top end of the support assembly, a second positioning groove 206 opened at one side of the top end of the material guiding shell 205, a first positioning groove 203 opened at one side of the bottom end of the material guiding shell 205, a material storage shell 207 fixed at the top end of the material guiding shell 205, a pushing block 209 slidably arranged at one side inside the material guiding shell 205, and a first hydraulic cylinder 208 installed at the bottom end of one side of the material guiding shell 205 and connected to the pushing block 209.

[0063] The working principle and beneficial effects of the above technical solution are as follows: By placing multiple groups of workpieces 15 into the interior of the material storage shell 207 to stack the multiple groups of workpieces 15 neatly, then starting the contraction of the first hydraulic cylinder 208, causing the first hydraulic cylinder 208 to drive the pushing block 209 to move backward. At the same time, the workpieces 15 inside the material storage shell 207 fall into the interior of the material guiding shell 205. When feeding is required, start the electric sliding table 202 to transport the material guiding shell 205 to the processing position, and start the extension of the first hydraulic cylinder 208, causing the pushing block 209 to push the workpiece 15 to move directly above the rotating table 3. At the same time, the positioning mechanism 10 fixes the position of the workpiece 15. Through the first positioning groove 203, it is convenient for the bottom of the workpiece 15 to contact the lower clamping seat 1007. At the same time, the second positioning groove 206 facilitates the pointed rod 1004 to be inserted into the hole groove inside the workpiece 15.

[0064] As Figure 8 、 Figure 9 and Figure 10 shown, in one embodiment: The support assembly includes a support seat 201 installed at one side of the top end of the base 1, an electric sliding table 202 installed at the top end of the support seat 201, and a connecting frame 204 fixed at the top end of the electric sliding table 202 and connected to the material guiding shell 205.

[0065] The working principle and beneficial effects of the above technical solution are as follows: By starting the electric sliding table 202 to move the material guiding shell 205, and at the same time, the support seat 201 supports the electric sliding table 202.

[0066] As Figure 8 、 Figure 9 and Figure 10 shown, in one embodiment: An arc-shaped groove matching the side shape of the workpiece 15 is opened on one side of the pushing block 209, and the electric sliding table 202 drives the material guiding shell 205 to move horizontally through the connecting frame 204.

[0067] The working principle and beneficial effects of the above technical solution are as follows: Through the arc-shaped groove of the pushing block 209, it is convenient to push the workpiece 15 to move, so that the workpiece 15 is not easily offset during the movement process.

[0068] As Figure 6 and Figure 7As shown, in one embodiment: the positioning mechanism 10 includes a column 1001 installed on one side of the top of the base 1, a first slide rail 1003 installed on one side of the column 1001, a moving seat 1002 sliding on the outside of the first slide rail 1003, a third hydraulic cylinder 1006 installed inside the top of the column 1001, a mounting block 1005 fixed to the bottom end of the third hydraulic cylinder 1006 and connected to the moving seat 1002, a pointed rod 1004 rotatably connected to the inside of the mounting block 1005, and a lower clamping seat 1007 installed on the top of the rotating table 3.

[0069] The working principle and beneficial effects of the above technical solution are as follows: by starting the third hydraulic cylinder 1006 to push the mounting block 1005 downward, the mounting block 1005 drives the pointed rod 1004 to be inserted into the hole groove inside the workpiece 15, and then with the continuous pressing of the third hydraulic cylinder 1006, the pointed rod 1004 presses the workpiece 15 to be fixed on the top of the lower clamping seat 1007, and the mounting block 1005 and the pointed rod 1004 are guided by sliding the moving seat 1002 on the surface of the first slide rail 1003.

[0070] like Figure 6 and Figure 7 As shown, in one embodiment: the pointed rod 1004 and the lower clamp seat 1007 are located on the same vertical center line, and a rotating bearing is installed between the pointed rod 1004 and the mounting block 1005.

[0071] The working principle and beneficial effects of the above technical solution are as follows: by rotating the pointed rod 1004 inside the mounting block 1005, the resistance of the workpiece 15 during rotation is reduced.

[0072] Specifically, when the CNC gear hobbing machine is in use, the device is placed in the working area, the device is connected to a power source, and then the tool 17 is installed on the outside of the tool rod 16, the workpiece 15 is placed in the feeding mechanism 2, and the feeding mechanism 2 is started to automatically feed the workpiece 15, and at the same time, the positioning mechanism 10 fixes the workpiece 15 moved to the specified position, and the fourth hydraulic cylinder 11 is started to push the moving frame 6 to slide on the top of the second slide rail 12, so that the moving frame 6 drives the tool 17 to move toward the workpiece 15, so that the workpiece 15 contacts the tool 17, and the workpiece 15 is started. The spindle motor 13 drives the gear box 14 to rotate at high speed through the tool rod 16 to cut the workpiece 15. At the same time, the rotary table 3 can drive the workpiece 15 to rotate to process the four sides of the workpiece 15. The moving mechanism 5 drives the tool 17 to move up and down in the vertical direction and rotate the angle of the tool 17 to process the workpiece 15 from different angles. After the processing is completed, the positioning mechanism 10 is controlled to release the workpiece 15, so that the loading mechanism 2 loads the unprocessed workpiece 15 and pushes the processed workpiece 15 down;

[0073] By starting the extension of the second hydraulic cylinder 501 and the auxiliary hydraulic cylinder 508, the second hydraulic cylinder 501 and the auxiliary hydraulic cylinder 508 push the moving plate 503 to move. At the same time, the sliding plate 507 slides between the moving frame 6 and the pressing plate 4 to guide one side of the moving plate 503, enabling the moving plate 503 to only perform vertical movement. Meanwhile, the moving plate 503 drives the main box body 9 to rise and fall to adjust the height of the cutting tool 17. Start the driving motor 504 to drive the worm 505 to rotate, so that the worm 505 starts the connecting shaft 510 to rotate inside the moving plate 503 through the worm gear 506, and drives the main box body 9 to flip to adjust the cutting angle of the cutting tool 17. The friction between the connecting shaft 510 and the moving plate 503 is reduced through the ball bearing 511. Slide on one side of the moving plate 503 through the chute 513 to guide the rotation of the rotating seat 512 and reduce the shaking of the main box body 9 and the rotating seat 512;

[0074] By placing multiple groups of workpieces 15 inside the storage shell 207, the multiple groups of workpieces 15 are stacked neatly. Immediately start the contraction of the first hydraulic cylinder 208, so that the first hydraulic cylinder 208 drives the push block 209 to move backward. At the same time, the workpieces 15 inside the storage shell 207 fall into the inside of the material guiding shell 205. When feeding is required, start the electric sliding table 202 to transport the material guiding shell 205 to the processing position. Start the extension of the first hydraulic cylinder 208, so that the push block 209 pushes the workpiece 15 to move directly above the rotating table 3. At the same time, the positioning mechanism 10 fixes the position of the workpiece 15. Through the first positioning groove 203, it is convenient for the bottom of the workpiece 15 to contact the lower clamping seat 1007. At the same time, the second positioning groove 206 makes it convenient for the pointed rod 1004 to insert into the hole groove inside the workpiece 15;

[0075] By starting the third hydraulic cylinder 1006 to push the mounting block 1005 to move downward, the mounting block 1005 drives the pointed rod 1004 to insert into the hole groove inside the workpiece 15. Immediately, with the continuous pressing of the third hydraulic cylinder 1006, the pointed rod 1004 presses and fixes the workpiece 15 on the top of the lower clamping seat 1007. Since the bottom of the pointed rod 1004 is a conical tip, when the pointed rod 1004 inserts into the inside of the workpiece 15, the inclined surface of the conical tip pushes the workpiece 15 to move to the axis position of the pointed rod 1004, making the placement position of the workpiece 15 accurate. The mounting block 1005 and the pointed rod 1004 are guided by sliding the moving seat 1002 on the surface of the first sliding rail 1003. The resistance during the rotation of the workpiece 15 is reduced by the rotation of the pointed rod 1004 inside the mounting block 1005.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above-described embodiments and descriptions in the specification are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all such changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A CNC gear hobbing machine tool, comprising a base (1), characterized in that: Also includes: A rotating table (3) is arranged on the top of the base (1), and a workpiece (15) is arranged on the top of the rotating table (3); A feeding mechanism (2) is arranged on one side of the rotating table (3) and is used for automatically feeding the workpiece (15); A positioning mechanism (10) is arranged on one side of the top of the base (1) and is used to fix the workpiece (15) on the top of the rotating table (3); A second slide rail (12) is installed on both sides of the top of the base (1), and the top of the second slide rail (12) is slidably connected to a moving frame (6), and a fourth hydraulic cylinder (11) connected to the base (1) is installed inside one side of the moving frame (6); A protective cover (7) is fixed to one side of the top of the movable frame (6), and a pressure plate (4) is fixed to one side of the movable frame (6); A moving mechanism (5) is arranged inside one side of a moving frame (6), wherein the moving mechanism (5) comprises a slide plate (507) sliding between a pressure plate (4) and the moving frame (6), a moving plate (503) fixed on one side of the slide plate (507), an auxiliary hydraulic cylinder (508) installed at the top of one side of the moving plate (503) and connected to the moving frame (6), a second hydraulic cylinder (501) installed at the top of the other side of the moving plate (503), a reinforcing plate (502) installed on the outside of the second hydraulic cylinder (501) and connected to the moving frame (6), a guide rod (509) slidably connected inside the reinforcing plate (502) and connected to the moving plate (503), and a rotating assembly arranged inside one side of the moving plate (503); A main housing (9) is arranged on one side of the moving mechanism (5), and a gear box (14) is installed on one side of the main housing (9), a knife-beating cylinder (18) is installed at the bottom end of one side of the gear box (14), a knife rod (16) is installed at the bottom end of the other side of the gear box (14), and a knife (17) is detachably installed on the outer side of the knife rod (16), a spindle motor (13) is installed at the top end of the other side of the gear box (14), and a motor protection shell (8) connected to the main housing (9) is sleeved on the outer side of the spindle motor (13); The rotating assembly comprises a connecting shaft (510) rotatably connected to the inside of the moving plate (503), a worm wheel (506) mounted on the other side of the connecting shaft (510), a worm (505) mounted on the top of one side of the moving plate (503) and meshing with the worm wheel (506), a driving motor (504) mounted on one side of the moving plate (503) and having a rotating end connected to the worm (505), a ball bearing (511) mounted between the moving plate (503) and the connecting shaft (510), a rotating seat (512) fixed on one side of the connecting shaft (510) and connected to the main housing (9), and a rotating shaft (512) provided on the rotating seat. The material loading mechanism (2) comprises a support assembly mounted on the top of the base (1), a material guide shell (205) arranged on the top of the support assembly, a second positioning groove (206) opened on one side of the top of the material guide shell (205), a first positioning groove (203) opened on one side of the bottom of the material guide shell (205), a material storage shell (207) fixed on the top of the material guide shell (205), a push block (209) sliding on one side of the inside of the material guide shell (205), and a first hydraulic cylinder (208) mounted on the bottom of one side of the material guide shell (205) and connected to the push block (209).

2. A CNC gear hobbing machine according to claim 1, characterized in that: A slide rail matching the slide groove (513) is provided on one side of the movable plate (503), and the slide groove (513) and the connecting shaft (510) are located on the same axis.

3. A CNC gear hobbing machine according to claim 2, characterized in that: The slide plates (507) are provided in two groups, and the slide plates (507) are symmetrically distributed on the vertical center line of the moving plate (503).

4. A CNC gear hobbing machine according to claim 1, characterized in that: The support assembly comprises a support seat (201) mounted on one side of the top end of the base (1), an electric slide (202) mounted on the top end of the support seat (201), and a connecting frame (204) fixed on the top end of the electric slide (202) and connected to a material guide shell (205).

5. A CNC gear hobbing machine tool according to claim 4, characterized in that: An arc-shaped groove matching the side shape of the workpiece (15) is provided on one side of the push block (209), and the electric slide (202) drives the material guide shell (205) to move horizontally via the connecting frame (204).

6. A CNC gear hobbing machine tool according to claim 1, characterized in that: The positioning mechanism (10) comprises a column (1001) mounted on one side of the top end of the base (1), a first slide rail (1003) mounted on one side of the column (1001), a movable seat (1002) sliding on the outside of the first slide rail (1003), a third hydraulic cylinder (1006) mounted inside the top end of the column (1001), a mounting block (1005) fixed at the bottom end of the third hydraulic cylinder (1006) and connected to the movable seat (1002), a pointed rod (1004) rotatably connected inside the mounting block (1005), and a lower clamping seat (1007) mounted on the top end of the rotating table (3).

7. A CNC gear hobbing machine tool according to claim 6, characterized in that: The pointed rod (1004) and the lower clamp seat (1007) are located on the same vertical center line, and a rotating bearing is installed between the pointed rod (1004) and the mounting block (1005).

8. A method for operating a CNC gear hobbing machine tool according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: placing the device in the working area, connecting the device to a power source, and then installing the tool (17) on the outside of the tool rod (16); S2: placing the workpiece (15) into the loading mechanism (2) and starting the loading mechanism (2) to automatically load the workpiece (15), while the positioning mechanism (10) fixes the workpiece (15) moved to the designated position; S3: starting the fourth hydraulic cylinder (11) to push the movable frame (6) to slide on the top of the second slide rail (12), so that the movable frame (6) drives the tool (17) to move toward the workpiece (15), so that the workpiece (15) contacts the tool (17); S4: starting the spindle motor (13), so that the gear box (14) drives the tool (17) to rotate at high speed through the tool rod (16), and the workpiece (15) is cut. At the same time, the rotary table (3) can drive the workpiece (15) to rotate, and the surrounding of the workpiece (15) is processed; S5: driving the tool (17) to move vertically up and down through the moving mechanism (5), and rotating the angle of the tool (17) so as to process the workpiece (15) from different angles; S6: After the processing is completed, the positioning mechanism (10) is controlled to release the workpiece (15), so that the loading mechanism (2) loads the unprocessed workpiece (15) and pushes down the processed workpiece (15), and the processing operation is repeated in a cycle.

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