Automatic feeding gear hobbing machine

Abstract

The invention relates to an automatic feeding gear hobbing machine, and belongs to the technical field of cooling fin machining, the automatic feeding gear hobbing machine comprises a workbench, a fixed clamping seat is arranged on the workbench, a movable clamping seat is arranged on the workbench in a sliding mode, and a driving source is arranged on the workbench; the driving source is used for driving the movable clamping base to get close to or get away from the fixed clamping base in the horizontal direction, the fixed clamping base and the movable clamping base are each provided with a multi-direction limiting mechanism, and the multi-direction limiting mechanisms are used for clamping and limiting a workpiece base plate in multiple directions including the vertical direction and the horizontal direction. The clamping device has the effects that the situation that the workpiece base plate is upwarped in the vertical direction in the clamping process is prevented, and the machining safety is improved to a certain degree.

Description

Technical Field

[0001] The present invention relates to the technical field of heat sink processing, and in particular to a hobbing machine with automatic feeding. Background Art

[0002] A heat sink is a structure used to dissipate heat from heat-generating electronic components in an electrical appliance. During use, the heat dissipated from the electronic components is conducted to the heat sink, and the heat is dissipated to the surrounding environment through the heat sink. Heat sinks are mostly made of materials with high thermal conductivity coefficients such as aluminum alloy and brass.

[0003] For some heat sinks with high precision requirements, usually after the broaching is completed, a hobbing machine is further used for finish machining; the hobbing machine mainly includes a machine body, a workbench, and a tool mechanism arranged on the machine body. The workbench is slidably arranged on the machine body, and a tooling fixture for clamping the heat sink substrate is arranged on the workbench. During use, the heat sink substrate is clamped and fixed by the tooling fixture, then the workbench is driven to drive the heat sink substrate to move, and then the heat sink substrate is further processed by the rotating tool mechanism.

[0004] Currently, most of the tooling fixtures on the hobbing machine are clamped from left and right. During the process of clamping the heat sink substrate from left and right, the heat sink substrate is prone to warp in the vertical direction due to the force, posing a safety hazard. Summary of the Invention

[0005] To help prevent the workpiece substrate from warping in the vertical direction during the clamping process and improve the processing safety to a certain extent, the present invention provides a hobbing machine with automatic feeding.

[0006] The hobbing machine with automatic feeding provided by the present invention adopts the following technical solutions: A hobbing machine with automatic feeding includes a workbench, a fixed clamping seat is arranged on the workbench, a moving clamping seat is slidably arranged on the workbench, a driving source is arranged on the workbench, the driving source is used to drive the moving clamping seat to approach or move away from the fixed clamping seat in the horizontal direction, and multi-directional limiting mechanisms are arranged on both the fixed clamping seat and the moving clamping seat, and the multi-directional limiting mechanisms are used to clamp and limit the workpiece substrate in multiple directions including vertical and horizontal directions.

[0007] Preferably, each multi-directional limiting mechanism includes a clamping part, the clamping part is arranged on the corresponding fixed clamping seat or moving clamping seat, the surfaces of the clamping parts on the moving clamping seat and the fixed clamping seat that are close to each other are inclined surfaces, the distance between the two inclined surfaces increases from top to bottom, and the inclined surfaces are used to abut against the workpiece substrate.

[0008] Preferably, each of the multi-directional limiting mechanisms includes a mounting plate, a horizontal abutting plate, a vertical abutting plate, and a transmission assembly. The mounting plate is disposed on the corresponding fixed clamping seat or movable clamping seat. The horizontal abutting plate is slidably inserted through the corresponding mounting plate. The sliding direction of the horizontal abutting plate is parallel to the arrangement direction of the fixed clamping seat and the movable clamping seat. The horizontal abutting plate is used to abut against the side surface of the workpiece substrate. The vertical abutting plate is slidably disposed on the corresponding mounting plate in the vertical direction. The vertical abutting plate is used to abut against the upper surface of the workpiece substrate. The transmission assembly is configured to drive the vertical abutting plate to move toward the workpiece substrate when the horizontal abutting plate slides toward the direction close to the corresponding mounting plate.

[0009] Preferably, the transmission assembly includes a piston ring disposed on the horizontal abutting plate, an airbag disposed on the mounting plate, and an elastic member disposed in the mounting plate. An installation cavity is formed in the mounting plate. The horizontal abutting plate is slidably inserted through the installation cavity. The piston ring is sleeved on the horizontal abutting plate. The piston ring abuts against the inner wall of the installation cavity. An air passage is formed in the mounting plate. One end of the air passage communicates with the installation cavity, and the other end communicates with the airbag. The airbag is connected to the vertical abutting plate. The elastic member is configured to push the horizontal abutting plate to move away from the installation cavity.

[0010] Preferably, the elastic member includes a first spring disposed in the installation cavity. The first spring is configured to push the horizontal abutting plate to move away from the installation cavity.

[0011] Preferably, the horizontal abutting plate includes a moving plate and a clamping plate. The moving plate is slidably inserted through the installation cavity. The piston ring is sleeved on the moving plate. The clamping plate is slidably disposed on the moving plate in the vertical direction. The clamping plate is located below the vertical abutting plate. An elastic reset member is disposed on the moving plate for driving the clamping plate to reset.

[0012] Preferably, the elastic reset member includes a second spring for driving the clamping plate to reset. One end of the second spring is disposed on the moving plate, and the other end is disposed on the clamping plate. When the vertical abutting plate and the clamping plate are in a separated state, the upper surface of the clamping plate is higher than the upper surface of the workpiece substrate.

[0013] Preferably, when the first spring is in a natural state, the surface of the clamping plate close to the workpiece substrate is flush with the surface of the vertical abutting plate close to the workpiece substrate.

[0014] Preferably, the driving source includes a cylinder disposed on the workbench. The movable clamping seat is connected to the piston rod of the cylinder.

[0015] Preferably, the hobbing machine further includes a machine body and a sliding table. The sliding table is slidably arranged on the machine body. The workbench is arranged on the sliding table. A driving member is arranged on the machine body. The driving member is used to drive the sliding table to drive the workbench to move in a direction close to or away from the cutting tool on the machine body.

[0016] In summary, the present invention includes the following beneficial technical effects: During operation, the workpiece substrate is placed between the fixed clamping seat and the movable clamping seat. Then, the driving source is used to drive the movable clamping seat to move in a direction close to the fixed clamping seat. The multi-directional limiting mechanism on the movable clamping seat abuts against the workpiece substrate, and the workpiece substrate is abutted against the multi-directional limiting mechanism of the fixed clamping seat. Thus, the workpiece substrate is clamped and limited by the multi-directional limiting mechanisms on both sides. Since the multi-directional limiting mechanism can limit the workpiece substrate in multiple directions including vertical and horizontal directions, it helps to prevent the workpiece substrate from tilting in the vertical direction during the clamping process, and improves the processing safety to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present invention.

[0018] Figure 2 is the overall structural schematic diagram of the workbench in Embodiment 1 of the present invention.

[0019] Figure 3 is the overall structural plan view of the workbench in Embodiment 1 of the present invention.

[0020] Figure 4 is the overall structural schematic diagram of the workbench in Embodiment 2 of the present invention.

[0021] Figure 5 is the overall structural sectional view of the mounting plate in Embodiment 2 of the present invention.

[0022] Description of the reference numerals: 1. Workbench; 2. Fixed clamping seat; 3. Movable clamping seat; 31. Sub-seat; 4. Driving source; 5. Clamping part; 6. Mounting plate; 7. Horizontal abutting plate; 71. Movable plate; 72. Clamping plate; 8. Vertical abutting plate; 9. Piston ring; 10. Airbag; 11. Mounting cavity; 12. First spring; 13. Second spring; 14. Machine body; 15. Sliding table; 16. Support seat; 17. Pad; 18. Guide rail; 19. Limiting plate; 20. Positioning groove; 21. Groove; 22. Chute; 23. Slide block; 24. Support plate; 25. Air duct. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following is a further detailed description of the present invention in conjunction with Figures 1-5 for the present invention.

[0024] Embodiment 1:

[0025] An embodiment of the present invention discloses a hobbing machine with automatic feeding. Refer to Figure 1 , the hobbing machine with automatic feeding includes a machine body 14, a slide table 15 and a workbench 1. The slide table 15 is slidably installed on the machine body 14. The length direction of the slide table 15 is perpendicular to the axis direction of the cutting tool on the machine body 14, and the sliding direction of the slide table 15 is parallel to the length direction of the slide table 15; the workbench 1 is fixedly installed on the slide table 15 by bolts.

[0026] Refer to Figure 1 and Figure 2 , a fixed clamping seat 2 is fixedly arranged on the workbench 1 by bolts. A support seat 16 is fixed on the workbench 1. The upper surface of the support seat 16 is lower than the upper surface of the fixed clamping seat 2. The support seat 16 is used for placing a workpiece. A movable clamping seat 3 is slidably arranged on the workbench 1. The support seat 16 is located between the movable clamping seat 3 and the fixed clamping seat 2. The upper surface of the movable clamping seat 3 is higher than the upper surface of the support seat 16. The sliding direction of the movable clamping seat 3 is parallel to the length direction of the workbench 1. The arrangement direction of the movable clamping seat 3 and the fixed clamping seat 2 is parallel to the length direction of the workbench 1; a driving source 4 is arranged on the workbench 1. The driving source 4 is used to drive the movable clamping seat 3 to approach or move away from the fixed clamping seat 2 in the horizontal direction. Multi-directional limiting mechanisms are arranged on both the fixed clamping seat 2 and the movable clamping seat 3. The multi-directional limiting mechanism is used to clamp and limit the workpiece substrate from multiple directions including vertical and horizontal directions.

[0027] During operation, the workpiece substrate is placed on the support seat 16. Then, the driving source 4 is used to drive the movable clamping seat 3 to move towards the direction close to the fixed clamping seat 2. The multi-directional limiting mechanism on the movable clamping seat 3 abuts against the workpiece substrate, and the workpiece substrate is abutted against the multi-directional limiting mechanism of the fixed clamping seat 2. Thus, the workpiece substrate is clamped and limited by the multi-directional limiting mechanisms on both sides. Since the multi-directional limiting mechanism can limit the workpiece substrate in multiple directions including vertical and horizontal directions, it helps to prevent the workpiece substrate from tilting in the vertical direction during the clamping process, and improves the processing safety to a certain extent.

[0028] Refer to Figure 1, a driving member is provided on the machine body 14. The driving member is used to drive the sliding table 15 to drive the workbench 1 to move in a direction approaching or departing from the tool on the machine body 14. Specifically, the driving member includes a support, a motor, and a screw rod. The support is fixed on the machine body 14, the motor is fixedly installed on the sliding table 15, the screw rod is rotatably arranged on the sliding table 15, the rotation axis of the screw rod is parallel to the sliding direction of the sliding table 15, the screw rod is coaxially fixed with the output shaft of the motor, and the screw rod is threadedly arranged on the support. By driving the screw rod to rotate by the motor, and the screw rod is in threaded cooperation with the support, relative movement between the screw rod and the support will occur, thereby driving the sliding table 15 and the workbench 1 to slide and automatically feeding towards the tool for processing, which is simple and convenient, labor-saving and has high safety. The motor is controlled by an external PLC controller, which helps to improve the automation of processing. In other embodiments, the support, the motor, and the screw rod can be replaced with an electric cylinder, an electric push rod, etc. installed on the machine body 14, and the automatic feeding of the sliding table 15 and the workbench 1 can also be achieved by the pushing of the electric cylinder and the electric push rod.

[0029] Referring to Figure 2 , to facilitate the vertical and horizontal multi-directional limiting and clamping of the workpiece substrate, each multi-directional limiting mechanism includes a clamping portion 5. The clamping portions 5 are integrally formed on the corresponding moving clamping seat 3 or fixed clamping seat 2 respectively, and the two clamping portions 5 are respectively located on the side of the moving clamping seat 3 and the fixed clamping seat 2 that are close to each other. The sides of the two clamping portions 5 that are close to each other are inclined surfaces, and the distance between the two inclined surfaces increases from top to bottom. The inclined surfaces are used to abut against the workpiece substrate.

[0030] When it is necessary to clamp the workpiece substrate, the driving source 4 is used to drive the moving clamping seat 3 to move in a direction approaching the support seat 16. The inclined surface of the clamping portion 5 on the moving clamping seat 3 gradually abuts the workpiece substrate against the inclined surface of the clamping portion 5 on the fixed clamping seat 2, so that the workpiece substrate is clamped by the clamping portions 5 with inclined surfaces on both sides. Since the inclined surfaces of the clamping portions 5 can block the upward and horizontal movement of the workpiece substrate, multi-directional limiting in the vertical and horizontal directions of the workpiece substrate is achieved, which helps to prevent the workpiece substrate from tilting in the vertical direction during the clamping process and improves the processing safety; at the same time, it can also be applicable to workpiece substrates of different thicknesses.

[0031] Referring to Figure 2 and Figure 3, for the convenience of installing the moving clamping seat 3, a backing plate 17 is fixed on the workbench 1 by bolts, and a guide rail 18 is fixed on the backing plate 17. The lower end of the moving clamping seat 3 is slidably matched with the guide rail 18, which helps to guide the sliding of the moving clamping seat 3; to facilitate adapting to work-piece substrates of different sizes and save energy consumption, the moving clamping seat 3 may include a plurality of sub-seats 31. The arrangement direction of the plurality of sub-seats 31 is perpendicular to the length direction of the workbench 1, and the guide rail 18 corresponds to the sub-seat 31 one by one. The lower end of the sub-seat 31 is slidably matched with the corresponding guide rail 18. In the embodiment of the present invention, three sub-seats 31 are provided. In other embodiments, the number of sub-seats 31 can be set as required.

[0032] Refer to Figure 2 and Figure 3 , to facilitate driving the moving clamping seat 3 to move, a support plate 24 is fixed on the backing plate 17. The support plate 24 is located on the side of the moving clamping seat 3 away from the support seat 16. The driving source 4 includes a cylinder. The cylinder is fixedly installed on the support plate 24, and the moving clamping seat 3 is fixedly connected to the piston rod of the cylinder; further, the cylinder corresponds to the sub-seat 31 one by one, and the sub-seat 31 is fixedly connected to the piston rod of the corresponding cylinder. The cylinder is controlled by an external PLC controller, which helps to improve the processing automation.

[0033] During operation, start the corresponding number of cylinders according to the size of the work-piece substrate, and drive the corresponding sub-seats 31 to move through the cylinders, so as to clamp the work-piece substrate; when processing small work-piece substrates, the usage amount of the cylinders can be reduced, thereby saving energy consumption.

[0034] Refer to Figure 2 and Figure 3 , for the convenience of installing the backing plate 17, limit plates 19 are installed on both sides of the workbench 1 by screws. The backing plate 17 is located between the two limit plates 19 and abuts against the limit plates 19 on both sides. Through the setting of the limit plates 19, the backing plate 17 can be quickly and accurately installed on the workbench 1.

[0035] Refer to Figure 2 and Figure 3 , since a positioning boss is usually provided at the bottom of the heat sink work-piece substrate, to facilitate positioning the heat sink work-piece substrate, a positioning groove 20 is formed on the upper surface of the support seat 16. The positioning groove 20 is generally larger than the positioning boss below the heat sink work-piece substrate. The positioning groove 20 penetrates through the opposite sides of the support seat 16, and the penetration direction of the positioning groove 20 is perpendicular to the arrangement direction of the fixed clamping seat 2 and the moving clamping seat 3. When placing the heat sink work-piece substrate, place the boss below the heat sink work-piece substrate in the positioning groove 20 in the support seat 16, so as to be able to perform certain positioning on the heat sink work-piece substrate.

[0036] The implementation principle of Embodiment 1 of the present invention is as follows: During operation, the workpiece substrate is placed on the support base 16. Then, the air cylinder is started to drive the corresponding sub-seat 31 to move towards the direction close to the support base 16. The inclined surface of the clamping part 5 on the moving clamping seat 3 gradually abuts the workpiece substrate against the inclined surface of the clamping part 5 of the fixed clamping seat 2, so that the workpiece substrate is clamped by the clamping parts 5 with inclined surfaces on both sides. Since the inclined surfaces of the clamping parts 5 can block the upward and horizontal movement of the workpiece substrate, multi-directional limiting of the workpiece substrate in the vertical and horizontal directions is achieved, which helps to prevent the workpiece substrate from tilting in the vertical direction during the clamping process, and improves the processing safety to a certain extent; at the same time, it can also be applied to workpiece substrates with different thicknesses.

[0037] Embodiment 2:

[0038] Referring to Figure 4 and Figure 5 This embodiment is different from Embodiment 1 in that each multi-directional limiting mechanism includes a mounting plate 6, a horizontal abutting plate 7, a vertical abutting plate 8 and a transmission assembly. The mounting plate 6 is welded and fixed on the corresponding fixed clamping seat 2 or moving clamping seat 3, and the two mounting plates 6 are respectively located on the mutually close sides of the fixed clamping seat 2 and the moving clamping seat 3. The lower surface of the mounting plate 6 is lower than the upper surface of the support base 16, and the support base 16 is located between the two mounting plates 6 on both sides; specifically, the mounting plate 6 is in an inverted L shape, and the horizontal distance from the side of the upper end of the mounting plate 6 close to the support base 16 to the center of the support base 16 is less than the horizontal distance from the side of the lower end of the mounting plate 6 close to the support base 16 to the center of the support base 16.

[0039] Referring to Figure 4 and Figure 5 A mounting cavity 11 is formed on the side of the mounting plate 6 close to the support base 16. The mounting cavity 11 is located at the lower end of the mounting plate 6. The horizontal abutting plate 7 is slidably inserted into the mounting cavity 11. The horizontal abutting plate 7 includes a moving plate 71 and a clamping plate 72. The moving plate 71 is slidably inserted into the mounting cavity 11, and the sliding direction of the moving plate 71 is parallel to the arrangement direction of the fixed clamping seat 2 and the moving clamping seat 3. The clamping plate 72 is arranged on the moving plate 71, and the lower surface of the clamping plate 72 is lower than the upper surface of the support base 16. The clamping plate 72 is used to abut against the side surface of the workpiece substrate, so as to limit the workpiece substrate in the horizontal direction.

[0040] Referring to Figure 4 and Figure 5, the vertical abutting plate 8 is slidably connected to the upper end of the mounting plate 6 in the vertical direction, and the vertical abutting plate 8 and the top of the mounting plate 6 are slidably connected through the cooperation of the guide block and the guide groove; specifically, the vertical abutting plate 8 is L-shaped, the vertical abutting plate 8 is located above the clamping plate 72, and the vertical abutting plate 8 is used to abut against the upper surface of the workpiece substrate, so as to facilitate the vertical limit of the workpiece substrate. When the transmission component makes the moving plate 71 slide towards the direction close to the bottom wall of the corresponding installation cavity 11, the vertical abutting plate 8 is driven to move towards the workpiece substrate. The thickness of the workpiece substrate is always less than or equal to the vertical distance from the upper surface of the clamping plate 72 to the upper surface of the support base 16.

[0041] When the moving clamping seat 3 moves towards the direction close to the support base 16, the clamping plate 72 on the moving clamping seat 3 will abut against the workpiece substrate to make it fit with the clamping plate 72 on the fixed clamping seat 2. As the moving clamping seat 3 continues to approach the support base 16, the moving plate 71 will move towards the direction close to the bottom wall of the corresponding installation cavity 11. At this time, the transmission component drives the vertical abutting plate 8 to move towards the workpiece substrate until the vertical abutting plate 8 abuts against the upper surface of the workpiece substrate, so as to realize the multi-directional limit of the workpiece substrate in the vertical and horizontal directions, which helps to prevent the workpiece substrate from tilting vertically during the clamping process and improves the processing safety; at the same time, it can also be applicable to workpiece substrates with different thicknesses.

[0042] Refer to Figure 4 and Figure 5 , to facilitate the driving of the vertical abutting plate 8 to move towards the workpiece substrate when the moving plate 71 slides towards the direction close to the bottom wall of the corresponding installation cavity 11; a groove 21 is opened on the mounting plate 6, the groove 21 opens downward and is aligned with the lower end of the vertical abutting plate 8, and the volume of the groove 21 is smaller than the volume of the installation cavity 11. The transmission component includes a piston ring 9, an airbag 10 and an elastic member. The piston ring 9 is fixedly sleeved on the outer wall of the moving plate 71, and the piston ring 9 abuts against the inner wall of the installation cavity 11. The movement of the moving plate 71 can adjust the gas; the airbag 10 is movably arranged in the groove 21, and the lower end of the airbag 10 is fixedly connected to the vertical abutting plate 8, so as to drive the movement of the vertical abutting plate 8 according to the expansion or contraction of the airbag 10; an air duct 25 is opened in the mounting plate 6, one section of the air duct 25 is communicated with the installation cavity 11, and the other end is communicated with the airbag 10 in the groove 21, which helps to adjust the gas volume in the airbag 10 during the movement of the moving plate 71; the elastic member is arranged in the installation cavity 11, and the elastic member is used to push the moving plate 71 towards the direction away from the bottom wall of the installation cavity 11.

[0043] Refer to Figure 4 and Figure 5, to facilitate the movement of the moving plate 71 away from the bottom wall of the installation cavity 11, the elastic member includes a first spring 12. The first spring 12 is located in the installation cavity 11, and the extending direction of the first spring 12 is parallel to the sliding direction of the moving plate 71. One end of the first spring 12 is fixed to the bottom wall of the installation cavity 11, and the other end is fixed to the side of the moving plate 71 away from the clamping plate 72. To improve the reset effect, multiple first springs 12 are distributed, and the sum of the elastic forces of the multiple first springs 12 is greater than the sum of the friction force between the piston ring 9 and the installation cavity 11 and the gravity of the vertical abutting plate 8; when the first spring 12 is in a natural state, the lower end of the vertical abutting plate 8 abuts against the surface of the mounting plate 6 close to the opening of the groove 21, and the surface of the lower end of the vertical abutting plate 8 away from the support seat 16 is flush with the surface of the moving plate 71 close to the support seat 16.

[0044] When the moving clamping seat 3 moves towards the support seat 16, the clamping plate 72 on the moving clamping seat 3 will abut against the side surface of the workpiece substrate and make the other side of the workpiece substrate abut against the clamping plate 72 on the fixed clamping seat 2. As the moving clamping seat 3 continues to approach the support seat 16, the moving plate 71 will move towards the bottom wall of the corresponding installation cavity 11. At this time, the moving plate 71 squeezes the air in the installation cavity 11 into the corresponding airbag 10, driving the airbag 10 to expand rapidly and driving the vertical abutting plate 8 to move downward until the vertical abutting plate 8 abuts against the upper surface of the workpiece substrate. At this time, the air in the installation cavity 11 is balanced with the air in the airbag 10, and the moving plate 71 can no longer squeeze the air, thereby realizing multi-directional limiting of the workpiece substrate in the vertical and horizontal directions, helping to prevent the workpiece substrate from being lifted in the vertical direction during the clamping process, improving the processing safety; at the same time, it can also be applicable to workpiece substrates of different thicknesses.

[0045] Refer to Figure 4 and Figure 5 , the clamping plate 72 is slidably arranged on the moving plate 71 in the vertical direction. A sliding groove 22 is formed on the surface of the clamping plate 72 close to the corresponding moving plate 71. A sliding block 23 is fixed on the moving plate 71, and the sliding block 23 is slidably matched with the corresponding sliding groove 22. The cross-sections of the sliding block 23 and the sliding groove 22 are set as required to ensure that the moving plate 71 and the clamping plate 72 will not separate, thereby guiding the sliding of the clamping plate 72; an elastic reset member is arranged on the moving plate 71 to drive the clamping plate 72 to reset.

[0046] Refer to Figure 4 and Figure 5, for facilitating the reset of the clamping plate 72, the elastic reset member includes a second spring 13. The second spring 13 is located in the chute 22, below the slider 23. One end of the second spring 13 is fixed to the bottom wall of the slider 23, and the other end is fixed to the lower end of the chute 22. When the second spring 13 is in the natural state, the upper surface of the clamping plate 72 is higher than the upper surface of the moving plate 71. At this time, the upper surface of the clamping plate 72 is close to the lower end of the vertical abutting plate 8.

[0047] Referring to Figure 4 and Figure 5 , when the first spring 12 is in the natural state, the surface of the clamping plate 72 close to the workpiece substrate is flush with the surface of the vertical abutting plate 8 close to the workpiece substrate, and the horizontal distance from the surface of the moving plate 71 close to the support base 16 to the center of the support base 16 is less than the horizontal distance from the surface of the lower end of the mounting plate 6 close to the support base 16 to the center of the support base 16; when the surface of the moving plate 71 close to the support base 16 is flush with the surface of the lower end of the mounting plate 6 close to the support base 16, the lower end of the vertical abutting plate 8 is close to the lower end of the mounting plate 6, so as to ensure the clamping and limiting of workpiece substrates with different thicknesses.

[0048] When the clamping plate 72 is in a separated state from the workpiece substrate, the surface of the clamping plate 72 close to the workpiece substrate is flush with the surface of the vertical abutting plate 8 close to the workpiece substrate, so that the upper end of the mounting plate 6 will not protrude from the clamping plate 72, which is convenient for placing the workpiece substrate and will not interfere with the upper end of the mounting plate 6; when the moving plate 71 moves relatively close to the bottom wall of the corresponding mounting cavity 11, the moving plate 71 will squeeze the air in the mounting cavity 11 into the corresponding airbag 10, quickly driving the airbag 10 to expand and drive the vertical abutting plate 8 to move downward. Since the upper surface of the workpiece substrate is always lower than the upper surface of the clamping plate 72, as the vertical abutting plate 8 moves downward, the vertical abutting plate 8 presses the clamping plate 72 to move downward until the vertical abutting plate 8 abuts against the upper surface of the workpiece substrate. At this time, the upper surface of the clamping plate 72 is flush with the upper surface of the workpiece substrate, and the air in the mounting cavity 11 is balanced with the air in the airbag 10. The moving plate 71 can no longer squeeze the air, thereby realizing multi-directional limiting of the workpiece substrate in the vertical and horizontal directions, which helps to prevent the workpiece substrate from tilting upward in the vertical direction during the clamping process and improves the processing safety.

[0049] The implementation principle of Embodiment 2 of the present invention is as follows: When the moving clamping seat 3 moves towards the direction close to the support seat 16, the clamping plate 72 on the moving clamping seat 3 will abut against the side surface of the workpiece substrate and push the other side of the workpiece substrate to abut against the clamping plate 72 on the fixed clamping seat 2. As the moving clamping seat 3 continues to approach the support seat 16, the moving plate 71 will relatively approach the bottom wall of the corresponding installation cavity 11. Then, the moving plate 71 will squeeze the air in the installation cavity 11 into the corresponding airbag 10, quickly driving the airbag 10 to expand and drive the vertical abutting plate 8 to move downward. As the vertical abutting plate 8 moves downward, the vertical abutting plate 8 first presses the corresponding clamping plate 72 to move downward until the vertical abutting plate 8 abuts against the upper surface of the workpiece substrate. At this time, the upper surface of the clamping plate 72 is flush with the upper surface of the workpiece substrate, and the air in the installation cavity 11 is balanced with the air in the airbag 10. The moving plate 71 can no longer squeeze the air, thereby realizing multi-directional limiting of the workpiece substrate in the vertical and horizontal directions, helping to prevent the workpiece substrate from moving vertically during the clamping process, improving the processing safety; at the same time, it can also adapt to workpiece substrates of different thicknesses.

[0050] The above are all the preferred embodiments of the present invention. Without restricting the protection scope of the present invention accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An automated feeding gear hobbing machine, comprising a workbench (1), characterized in that: The workbench (1) is provided with a fixed clamping seat (2), the workbench (1) is slidably provided with a mobile clamping seat (3), the workbench (1) is provided with a driving source (4), the driving source (4) is used to drive the mobile clamping seat (3) to approach or move away from the fixed clamping seat (2) in a horizontal direction, and the fixed clamping seat (2) and the mobile clamping seat (3) are both provided with a multi-directional limiting mechanism, and the multi-directional limiting mechanism is used to clamp and limit the workpiece substrate from multiple directions including vertical and horizontal directions.

2. The automatic feeding gear hobbing machine according to claim 1, characterized in that: Each of the multi-directional limiting mechanisms comprises a clamping portion (5), wherein the clamping portion (5) is arranged on a corresponding fixed clamping seat (2) or a movable clamping seat (3), wherein a surface of the clamping portions (5) on the movable clamping seat (3) and the fixed clamping seat (2) that are close to each other is an inclined surface, wherein the distance between the two inclined surfaces increases from top to bottom, and the inclined surface is used for contacting with a workpiece substrate.

3. The automatic feeding gear hobbing machine according to claim 1, characterized in that: Each of the multi-directional limiting mechanisms comprises a mounting plate (6), a horizontal abutment plate (7), a vertical abutment plate (8) and a transmission assembly. The mounting plate (6) is arranged on a corresponding fixed clamping seat (2) or a movable clamping seat (3). The horizontal abutment plate (7) is slidably arranged on the corresponding mounting plate (6). The sliding direction of the horizontal abutment plate (7) is parallel to the arrangement direction of the fixed clamping seat (2) and the movable clamping seat (3). The horizontal abutment plate (7) is used to abut against the side surface of the workpiece substrate. The vertical abutment plate (8) is slidably arranged on the corresponding mounting plate (6) along the vertical direction. The vertical abutment plate (8) is used to abut against the upper surface of the workpiece substrate. The transmission assembly is used to drive the vertical abutment plate (8) to move toward the workpiece substrate when the horizontal abutment plate (7) slides in a direction close to the corresponding mounting plate (6).

4. The automatic feeding gear hobbing machine according to claim 3, characterized in that: The transmission assembly comprises a piston ring (9) arranged on a horizontal abutment plate (7), an airbag (10) arranged on a mounting plate (6), and an elastic member arranged in the mounting plate (6); a mounting cavity (11) is provided on the mounting plate (6); the horizontal abutment plate (7) is slidably arranged in the mounting cavity (11); the piston ring (9) is sleeved on the horizontal abutment plate (7); the piston ring (9) abuts against the inner wall of the mounting cavity (11); an air passage (25) is provided on the mounting plate (6); one end of the air passage (25) is connected to the mounting cavity (11), and the other end is connected to the airbag (10); the airbag (10) is connected to the vertical abutment plate (8); and the elastic member is used to push the horizontal abutment plate (7) to move in a direction away from the mounting cavity (11).

5. The automatic feeding gear hobbing machine according to claim 4, characterized in that: The elastic member comprises a first spring (12) arranged in the installation cavity (11), and the first spring (12) is used to push the horizontal abutment plate (7) to move in a direction away from the installation cavity (11).

6. The automatic feeding gear hobbing machine according to claim 5, characterized in that: The horizontal abutment plate (7) comprises a movable plate (71) and a clamping plate (72); the movable plate (71) is slidably arranged in the installation cavity (11); the piston ring (9) is sleeved on the movable plate (71); the clamping plate (72) is slidably arranged on the movable plate (71) along the vertical direction; the clamping plate (72) is located below the vertical abutment plate (8); and an elastic reset member for driving the clamping plate (72) to reset is arranged on the movable plate (71).

7. The automatic feeding gear hobbing machine according to claim 6, characterized in that: The elastic reset member comprises a second spring (13) for driving the clamping plate (72) to reset, one end of the second spring (13) is arranged on the movable plate (71), and the other end is arranged on the clamping plate (72), and when the vertical abutment plate (8) and the clamping plate (72) are in a disengaged state, the upper surface of the clamping plate (72) is higher than the upper surface of the workpiece substrate.

8. The automatic feeding gear hobbing machine according to claim 6, characterized in that: When the first spring (12) is in a natural state, a surface of the clamping plate (72) close to the workpiece substrate is flush with a surface of the vertical abutment plate (8) close to the workpiece substrate.

9. The automatic feeding gear hobbing machine according to claim 1, characterized in that: The driving source (4) comprises a cylinder arranged on the workbench (1), and the movable clamping seat (3) is connected to the piston rod of the cylinder.

10. An automated feeding gear hobbing machine according to any one of claims 1 to 9, characterized in that: The gear hobbing machine also includes a machine body (14) and a slide (15), wherein the slide (15) is slidably arranged on the machine body (14), and the workbench (1) is arranged on the slide (15). A driving member is arranged on the machine body (14), and the driving member is used to drive the slide (15) to drive the workbench (1) to move in a direction close to or away from a tool on the machine body (14).

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