Numerical control gear shaper based on double-drive synchronous compensation

Abstract

The invention discloses a numerical control gear shaping machine based on double-drive synchronous compensation, and belongs to the technical field of gear shaping machines. Comprising a lathe bed, a stand column vertically and fixedly connected to one side of the top of the lathe bed, a tool rest slidably connected to one side of the stand column, a slotting cutter detachably installed at the bottom of the tool rest, a radial sliding table slidably arranged on the other side of the top of the lathe bed and a sliding plate slidably arranged on the top of the radial sliding table. The workbench is rotationally arranged at the top of the sliding plate; and the rotating motor drives the workbench to rotate. The radial feeding system composed of the servo motor, the ball screw and the sliding block is symmetrically arranged at the top of the radial sliding table, driving force can be applied to a machining part in a balanced mode from the two sides, radial stress generated in the scene of large-load machining or large-diameter workpiece machining can be effectively offset, the deflection deformation amount of the ball screw is greatly reduced, and the machining precision is improved. Radial positioning precision fluctuation caused by lead screw deformation is avoided, the precision stability of key parameters such as the tooth pitch and the tooth shape in the gear machining process is finally ensured, and the precision gear manufacturing requirement is met.

Description

Technical Field

[0001] This invention relates to a CNC gear shaping machine, and more particularly to a CNC gear shaping machine based on dual-drive synchronous compensation, belonging to the technical field of gear shaping machines. Background Technology

[0002] As a core piece of equipment for precision gear manufacturing, CNC gear shaping machines are widely used in the automotive, aerospace, and engineering machinery industries. Their machining accuracy, efficiency, and tool life directly determine the performance of the gear transmission system.

[0003] Traditional gear shaper machines typically employ a single servo motor paired with a single ball screw in their radial feed system. This single power source drives the gear shaper cutter or workpiece to move radially, thereby controlling the depth of cut. However, in this single-drive mode, the screw is subjected to a driving force on one side. Under heavy loads or when machining large-diameter workpieces, it is prone to deflection and deformation, leading to fluctuations in radial positioning accuracy. This directly causes the cumulative error of the gear pitch to exceed the tolerance, affecting the machining accuracy.

[0004] In addition, in the cooling system of the cutting zone, traditional gear shapers mostly adopt an open spray coolant supply method, which sprays coolant into the cutting area through fixed nozzles to achieve cooling and lubrication. However, in the roughing stage, in order to improve efficiency, machining parameters with large feed rate and high cutting rate are usually used. During this process, a large amount of cutting heat will be generated instantaneously in the meshing area between the tool and the workpiece, forming a high-temperature vapor layer. A large amount of heat accumulates on the tool edge, accelerating tool thermal wear. This not only shortens the tool life, but may also cause problems such as tooth surface burn and built-up edge formation due to tool overheating, thus deteriorating the surface quality of the machined part.

[0005] To address this issue, a CNC gear hobbing machine based on dual-drive synchronous compensation was designed. Summary of the Invention

[0006] The main objective of this invention is to provide a CNC gear shaping machine based on dual-drive synchronous compensation. By symmetrically arranging a radial feed system consisting of a servo motor, ball screw, and slider on the top of the radial slide, a balanced driving force can be applied to the workpiece from both sides. This design effectively counteracts the radial stress generated during heavy-load machining or machining of large-diameter workpieces, significantly reducing the deflection of the ball screw and avoiding fluctuations in radial positioning accuracy caused by screw deformation. Ultimately, it ensures the accuracy and stability of key parameters such as tooth pitch and tooth profile during gear machining, meeting the requirements of precision gear manufacturing. By installing an outer and inner sheath on the top of the slide and outside the worktable, a closed space is formed inside the sheath during gear shaping and filled with coolant. Combined with a drainage pipe, discharge pipe, nozzle, and circulating filter mechanism, coolant circulation is achieved, upgrading traditional spray cooling to immersion cooling. This method can overcome the high-temperature vapor layer formed in the cutting zone during high-feed and high-cutting-rate machining, directly applying the coolant. At the core meshing area between the tool and the workpiece, it efficiently removes a large amount of instantaneous cutting heat, reducing thermal wear on the tool edge and significantly extending the service life of tools such as gear shapers. The circulating filtration mechanism, consisting of a circulation box, mesh frame, stop block, filter plate, drain port, circulation pump, addition port, cleaning motor, scraper, and screw, has the dual functions of graded filtration of debris and automatic cleaning of the filter plate. The mesh frame can first intercept large cutting debris, and the filter plate further filters small impurities, achieving stratified purification of the coolant. At the same time, the cleaning motor drives the screw to drive the scraper to clean the surface of the filter plate periodically, preventing impurities from clogging the filter plate and ensuring the circulation flow and unblocking effect of the coolant. It eliminates the need for frequent manual disassembly and cleaning, greatly improving the convenience and practicality of the equipment. By setting a height adjustment mechanism consisting of a fixing ring, vertical rod, guide block, vertical groove, and horizontal groove between the outer and inner sheaths, the height of the vertical rod can be adjusted to adapt to workpieces of different heights and specifications without changing special tooling, significantly improving the adaptability of the equipment to diverse processing needs.

[0007] The objective of this invention can be achieved by adopting the following technical solution: A CNC gear shaping machine based on dual-drive synchronous compensation includes a bed, a column vertically fixed to one side of the top of the bed, a tool post slidably connected to one side of the column, a gear shaping cutter detachably installed at the bottom of the tool post, a radial slide slidably disposed on the other side of the top of the bed, a slide plate slidably disposed on the top of the radial slide plate, a worktable rotatably disposed on the top of the slide plate, and a rotary motor for driving the worktable to rotate. Two sets of radial feed components are symmetrically arranged on the top of the radial slide, and both sets of radial feed components are connected to the slide plate drive to achieve dual-drive synchronous drive. An inner protective sleeve is fitted on the top of the skateboard and outside the workbench, and an outer protective sleeve is fitted outside the inner protective sleeve. A height adjustment mechanism is provided between the outer sheath and the inner sheath; A drainage hood is installed on the outside of the outer sheath, and a drainage tube is installed at the end of the drainage hood; An annular conduit is fitted on the top of the outer side of the inner sheath. Inside the inner sheath, nozzles that communicate with the annular conduit are installed in a uniformly inclined annular array. A discharge pipe is installed on the outer side of the annular conduit. The end of the bed is equipped with a circulation filter mechanism, and the ends of the drainage pipe and the discharge pipe are both connected to the circulation filter mechanism.

[0008] Preferably, the radial feed assembly includes a servo motor, a ball screw, and a slider. The servo motor is symmetrically fixed to both sides of the end of the radial slide. The output end of the servo motor is connected to one end of the ball screw, and the other end of the ball screw is rotatably connected to the other end of the top of the radial slide. The slider is threaded onto the outside of the ball screw, and the top of the slider is fixedly connected to the bottom of the slide plate.

[0009] Preferably, the top of the radial slide table is provided with a groove that matches the slider, the slider is slidably embedded in the groove, and a limiting groove that cooperates with the rotary motor is provided at the middle position of the top of the radial slide table along the straight direction.

[0010] Preferably, the circulating filtration mechanism includes a circulating box, a mesh frame, a filter plate, a circulating pump, and a cleaning component. The circulating box is fixedly connected to one side of the bed. A mesh frame is horizontally slidably installed on the top of the circulating box. A filter plate is inclinedly fixedly installed on the bottom of the circulating box. A cleaning component is provided on the top of the filter plate. The circulating pump is fixedly connected to the top of the circulating box. The input end of the circulating pump passes into the circulating box and is located below the filter plate. The output end of the circulating pump is connected to one end of the discharge pipe.

[0011] Preferably, the cleaning assembly includes a cleaning motor, a scraper, and a screw. The cleaning motor is fixed to the outer wall of the circulation box. The output end of the cleaning motor passes through the circulation box and is connected to one end of the screw. The other end of the screw is rotatably connected to the inner wall of the circulation box. The scraper is threaded onto the outside of the screw and its bottom surface is in contact with the top surface of the filter plate.

[0012] Preferably, the circulation box has an opening on one side wall that is adapted to the mesh frame, a stop block is rotatably installed on the side of the circulation box and at the top of the opening, the inner side of the stop block is attached to the end face of the mesh frame, a discharge port is provided at the bottom of the circulation box near the opening, and an addition port is provided at the top of the circulation box.

[0013] Preferably, heat sinks are evenly distributed on the outside of the circulation box and below the filter plate, and the heat sinks are made of copper-aluminum alloy.

[0014] Preferably, the height adjustment mechanism includes a fixing ring, a vertical rod, and a guide block. The fixing ring is fixed to the top of the outer side of the inner sheath. The vertical rod is evenly and vertically installed at the bottom of the fixing ring along the circumference. Vertical grooves are vertically opened at the positions of the vertical rods on the outer side of the outer sheath. Horizontal grooves communicating with the inside of the vertical grooves are opened on the sides of the vertical grooves. A guide block that matches the vertical grooves and horizontal grooves is fixed at the bottom of the vertical rod.

[0015] Preferably, a retaining ring is fixed circumferentially on the inner wall of the inner sheath, and the retaining ring is located at the bottom of the nozzle and tilted downward.

[0016] Preferably, sealing gaskets are provided between the inner sheath and the worktable, and between the outer sheath and the inner sheath. The sealing gaskets are made of rubber material that is resistant to coolant corrosion.

[0017] The beneficial effects of this invention are as follows: This invention provides a CNC gear shaping machine based on dual-drive synchronous compensation. By symmetrically arranging a radial feed system consisting of a servo motor, a ball screw, and a slider on the top of the radial slide, a balanced driving force can be applied to the workpiece from both sides. This design can effectively counteract the radial stress generated in heavy load processing or large-diameter workpiece processing scenarios, significantly reduce the deflection deformation of the ball screw, avoid fluctuations in radial positioning accuracy caused by screw deformation, and ultimately ensure the accuracy and stability of key parameters such as tooth pitch and tooth profile during gear processing, meeting the requirements of precision gear manufacturing. By installing an outer sheath and an inner sheath on the top of the slide plate and outside the worktable, a closed space can be formed inside the sheath and filled with coolant during gear hobbing. Combined with the drainage pipe, discharge pipe, nozzle and circulation filter mechanism, the coolant is circulated, upgrading the traditional spray cooling to immersion cooling. This method can break through the high temperature vapor layer formed in the cutting zone during high feed rate and high cutting rate machining, and directly apply the coolant to the core area of ​​tool and workpiece meshing, efficiently removing the large amount of cutting heat generated instantaneously, reducing the thermal wear of the tool edge, and significantly extending the service life of tools such as gear hobbing cutters. The circulating filtration mechanism, consisting of a circulation tank, mesh frame, baffles, filter plates, drain port, circulation pump, addition port, cleaning motor, scraper, and screw, has the dual functions of tiered filtration of debris and automatic cleaning of the filter plates. The mesh frame can first intercept large cutting debris, and the filter plates further filter small impurities, achieving tiered purification of the coolant. At the same time, the cleaning motor drives the screw to drive the scraper to clean the surface of the filter plates regularly, preventing impurities from clogging the filter plates and ensuring the circulation flow and unblocking effect of the coolant. It eliminates the need for frequent manual disassembly and cleaning, greatly improving the convenience and practicality of the equipment. By setting a height adjustment mechanism consisting of a fixing ring, a vertical rod, a guide block, a vertical groove, and a horizontal groove between the outer and inner sheaths, the height of the vertical rod can be adjusted to accommodate workpieces of different heights and specifications. This eliminates the need to change special tooling and significantly improves the equipment's adaptability to diverse processing needs. Attached Figure Description

[0018] Figure 1 This is a diagram of the internal structure of the chassis of a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention. Figure 2This is a front view of a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention; Figure 3 This is an exploded view of the top of the radial slide of a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention. Figure 4 This is a front view of the top of the radial slide in a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention; Figure 5 This is a schematic diagram of the sheath structure of a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention. Figure 6 This is a front view of the inner sheath of a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention; Figure 7 This is a cross-sectional view of the inner sleeve of a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention. Figure 8 This is a front view of a circulating filtration mechanism in a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention. Figure 9 This is a schematic diagram of the internal mechanism of the circulating filter mechanism in a preferred embodiment of a CNC gear hobbing machine based on dual-drive synchronous compensation according to the present invention.

[0019] In the diagram: 1. Bed; 2. Column; 3. Tool Post; 4. Gear Shaper; 5. Radial Slide; 6. Slide Plate; 7. Worktable; 8. Rotary Motor; 9. Limit Slot; 10. Slide Groove; 11. Slider; 12. Servo Motor; 13. Ball Screw; 14. Outer Sheath; 15. Inner Sheath; 16. Height adjustment mechanism; 1601. Fixing ring; 1602. Vertical rod; 1603. Guide block; 1604. Vertical groove; 1605. Horizontal groove; 17. Drainage hood; 18. Drainage tube; 19. Circular conduit; 20. Nozzle; 21. Discharge pipe; 22. Circulating filtration mechanism; 2201. Circulation box; 2202. Mesh frame; 2203. Baffle; 2204. Filter plate; 2205. Drain port; 2206. Circulating pump; 2207. Addition port; 2208. Cleaning motor; 2209. Scraper; 2210. Screw; 2211. Heat sink. Detailed Implementation

[0020] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0021] Example 1, as Figures 1-9As shown, this embodiment provides a CNC gear shaping machine based on dual-drive synchronous compensation, including a bed 1, a column 2 vertically fixed to one side of the top of the bed 1, a tool holder 3 slidably connected to one side of the column 2, a gear shaping cutter 4 detachably installed at the bottom of the tool holder 3, a radial slide 5 slidably disposed on the other side of the top of the bed 1, a slide plate 6 slidably disposed on the top of the radial slide plate 5, a worktable 7 rotatably disposed on the top of the slide plate 6, and a rotary motor 8 for driving the worktable 7 to rotate. Two sets of radial feed components are symmetrically arranged on the top of the radial slide table 5. Both sets of radial feed components are connected to the slide plate 6 to achieve dual-drive synchronous drive. An inner protective sleeve 15 is fitted on the top of the slide plate 6 and outside the workbench 7, and an outer protective sleeve 14 is fitted outside the inner protective sleeve 15. A height adjustment mechanism 16 is provided between the outer sheath 14 and the inner sheath 15; A drainage hood 17 is installed on the outside of the outer sheath 14, and a drainage tube 18 is installed at the end of the drainage hood 17; An annular conduit 19 is fitted on the top of the outer side of the inner sheath 15. The inner sheath 15 has nozzles 20 that are evenly inclined in a ring array and communicate with the annular conduit 19. An exhaust pipe 21 is installed on the outer side of the annular conduit 19. The end of the bed 1 is provided with a circulation filter mechanism 22, and the ends of the drainage pipe 18 and the discharge pipe 21 are both connected to the circulation filter mechanism 22.

[0022] Overall working principle: The gear workpiece to be processed is fixed on the worktable 7. The relative height of the outer sheath 14 and the inner sheath 15 is adjusted by the height adjustment mechanism 16 to ensure that the gear workpiece can be completely placed in the sealed space enclosed by the outer sheath 14 and the inner sheath 15. At the same time, the circulating filter mechanism 22 is checked and sufficient coolant is added to the circulating filter mechanism 22 to ensure that the coolant level reaches the standard for circulation. Then, the circulating filter mechanism 22 is started to fill the sealed space enclosed by the outer sheath 14 and the inner sheath 15 with coolant, submerging the gear workpiece. The flow rate of the drain pipe 18 and the discharge pipe 21 is then adjusted to ensure that the inflow and outflow are the same, thus ensuring the liquid level inside the sealed space.

[0023] After the equipment is started, the CNC system sends synchronous control signals to the radial feed components on both sides of the radial slide table 5 to ensure synchronous power output. The two sets of radial feed components work synchronously, and the two sets of components apply force symmetrically from both sides, driving the slide plate 6 to move smoothly along the radial slide table 5, offsetting the radial stress generated by the machining load, and ensuring that the workpiece on the worktable 7 is accurately close to the gear shaper 4. The tool holder 3 on the column 2 drives the gear shaper 4 to move vertically back and forth and rotate. At the same time, the rotary motor 8 drives the worktable 7 to rotate the workpiece, and the gear shaper 4 meshes with the workpiece to achieve gear cutting.

[0024] The coolant discharged from the discharge pipe 21 is evenly discharged from the nozzle 20 through the annular conduit 19. Since the nozzle 20 is distributed in an inclined annular array, the discharged coolant exerts a rotational thrust on the coolant inside the sealed space to ensure that the coolant is in a flowing state and increase the cooling effect during use.

[0025] Example 2: The solution in Example 1 will be further described below with reference to the specific working method. See the description below for details: In this embodiment, the radial feed assembly includes a servo motor 12, a ball screw 13, and a slider 11. The servo motor 12 is symmetrically fixed to both sides of the end of the radial slide 5. The output end of the servo motor 12 is connected to one end of the ball screw 13, and the other end of the ball screw 13 is rotatably connected to the other end of the top of the radial slide 5. The slider 11 is threaded onto the outside of the ball screw 13, and the top of the slider 11 is fixedly connected to the bottom of the slide plate 6.

[0026] Local working principle: When the servo motor 12 receives the synchronous control signal, the speed and direction of the two sets of motors are completely consistent, driving the two sets of ball screws 13 to rotate synchronously. According to the principle of thread transmission, the rotational motion of the ball screw 13 is converted into the linear motion of the slider 11 along the slide groove 10. The top of the slider 11 is fixed to the bottom of the slide plate 6, so the slide plate 6 moves smoothly in a straight line with the slider 11.

[0027] In this embodiment, the top of the radial slide table 5 is provided with a slide groove 10 that is adapted to the slider 11. The slider 11 is slidably embedded in the slide groove 10. At the middle position of the top of the radial slide table 5, a limiting groove 9 that cooperates with the rotary motor 8 is provided along the straight direction.

[0028] Local working principle: The slider 11 cooperates with the slide groove 10 to ensure the stable movement of the slide plate 6. The limiting groove 9 provides movement space for the rotary motor 8, avoids interference between the rotary motor 8 and the radial slide 5, and ensures that the slide plate 6 drives the worktable 7 to move smoothly throughout the entire process.

[0029] In this embodiment, the circulating filtration mechanism 22 includes a circulating box 2201, a mesh frame 2202, a filter plate 2204, a circulating pump 2206, and a cleaning assembly. The circulating box 2201 is fixedly connected to one side of the bed 1. The mesh frame 2202 is horizontally slidably arranged on the inner top of the circulating box 2201. The filter plate 2204 is obliquely fixedly installed on the inner bottom of the circulating box 2201. The top of the filter plate 2204 is provided with a cleaning assembly. The circulating pump 2206 is fixedly connected to the top of the circulating box 2201. The input end of the circulating pump 2206 passes through the circulating box 2201 and is located below the filter plate 2204. The output end of the circulating pump 2206 is connected to one end of the discharge pipe 21.

[0030] Local working principle: After the return coolant enters the circulation tank 2201 through the diversion pipe 18, it first flows through the mesh frame 2202. The mesh structure of the mesh frame 2202 intercepts larger cutting chips. The remaining coolant continues to permeate downwards to the filter plate 2204. The microporous structure of the filter plate 2204 filters out smaller particles of impurities. The purified coolant enters the liquid storage area at the bottom of the circulation tank 2201. The circulation pump 2206 draws coolant from the liquid storage area and enters the discharge pipe 21 to complete the circulation of coolant. When impurities accumulate on the surface of the filter plate 2204 and affect the flow rate, the surface of the filter plate 2204 can be cleaned by the cleaning component.

[0031] In this embodiment, the cleaning assembly includes a cleaning motor 2208, a scraper 2209, and a screw 2210. The cleaning motor 2208 is fixed to the outer wall of the circulation box 2201. The output end of the cleaning motor 2208 passes through the circulation box 2201 and is connected to one end of the screw 2210. The other end of the screw 2210 is rotatably connected to the inner wall of the circulation box 2201. The scraper 2209 is threaded onto the outside of the screw 2210 and its bottom surface is in contact with the top surface of the filter plate 2204.

[0032] Local working principle: When cleaning the surface of filter plate 2204, the cleaning motor 2208 is powered on and runs. Its output shaft drives the screw 2210 to rotate between the inner walls of the circulation box 2201. The scraper 2209 is threaded onto the screw 2210 and its bottom surface is in contact with the filter plate 2204. The rotation of the screw 2210 is converted into the linear motion of the scraper 2209. The scraper 2209 pushes the impurities on the filter plate 2204 downward.

[0033] In this embodiment, a side wall of the circulation box 2201 is provided with an opening that is adapted to the mesh frame 2202. A stop block 2203 is rotatably installed on the side of the circulation box 2201 and at the top of the opening. The inner side of the stop block 2203 is attached to the end face of the mesh frame 2202. A drain port 2205 is provided at the bottom of the circulation box 2201 near the opening. A filling port 2207 is also provided at the top of the circulation box 2201.

[0034] Partial working principle: The opening design allows the mesh frame 2202 to be easily pulled out horizontally. The initial liquid level of the refrigerant is lower than the bottom horizontal plane of the mesh frame 2202, making it more convenient to clean large particles of debris. The use of the baffle 2203 can limit the mesh frame 2202. The debris scraped off by the cleaning component can be discharged through the drain port 2205, while the addition port 2207 is used to add coolant during use.

[0035] In this embodiment, heat sinks 2211 are uniformly provided on the outer side of the circulation tank 2201 and below the filter plate 2204, and the heat sinks 2211 are made of copper-aluminum alloy.

[0036] Local working principle: The heat sink 2211 is made of copper-aluminum alloy. Copper-aluminum alloy has excellent thermal conductivity, which can quickly conduct the heat of the coolant in the circulation box 2201 to the air, thereby cooling the coolant and ensuring stable subsequent cooling effect.

[0037] In this embodiment, the height adjustment mechanism 16 includes a fixing ring 1601, a vertical rod 1602, and a guide block 1603. The fixing ring 1601 is fixed to the top of the outer side of the inner sheath 15. The vertical rod 1602 is evenly and vertically installed at the bottom of the fixing ring 1601 along the circumference. Vertical grooves 1604 are vertically opened on the outer side of the outer sheath 14 at the position corresponding to the vertical rod 1602. Horizontal grooves 1605 that communicate with the inside of the vertical grooves 1604 are opened on the side of each vertical groove 1604. A guide block 1603 that is adapted to the vertical grooves 1604 and horizontal grooves 1605 is fixed at the bottom end of the vertical rod 1602.

[0038] Local working principle: When the outer sheath 14 and inner sheath 15 are in the positioning state, the guide block 1603 is stuck inside the horizontal groove 1605. When adjusting the height of the inner sheath 15, first rotate the inner sheath 15 counterclockwise to move the guide block 1603 into the vertical groove 1604. Then push the inner sheath 15 down or up, and the guide block 1603 slides along the vertical groove 1604 until the distance between the top of the inner sheath 15 and the top of the workpiece meets the processing requirements. Then, rotate the inner sheath 15 clockwise to make the guide block 1603 slide into the horizontal groove 1605. The side wall of the horizontal groove 1605 restricts the up and down movement of the guide block 1603, thereby fixing the relative height of the outer sheath 14 and the inner sheath 15. Different workpieces can be adapted without changing special tooling.

[0039] In this embodiment, a retaining ring is fixed circumferentially on the inner wall of the inner sheath 15. The retaining ring is located at the bottom of the nozzle 20 and tilts downward.

[0040] Local working principle: The presence of the retaining ring can prevent the cooling liquid from carrying debris upwards when rotating in a closed space, thus preventing the debris from scratching the gears.

[0041] In this embodiment, sealing gaskets are provided between the inner sheath 15 and the worktable 7, and between the outer sheath 14 and the inner sheath 15. The sealing gaskets are made of rubber material that is resistant to coolant corrosion.

[0042] Local working principle: The use of sealing gaskets improves the sealing effect on the coolant.

[0043] Example 3: The solutions in Examples 1 and 2 will be further described below with reference to their specific working methods. See the description below for details: The operator installs and fixes the gear workpiece on the workbench 7, and adjusts the height of the inner sleeve 15 through the height adjustment mechanism 16. First, the inner sleeve 15 is rotated counterclockwise to move the guide block 1603 into the interior of the vertical groove 1604. Then, the inner sleeve 15 is pushed down or up, and the guide block 1603 slides along the vertical groove 1604 until the distance between the top of the inner sleeve 15 and the top of the workpiece meets the processing requirements. Then, the inner sleeve 15 is rotated clockwise to make the guide block 1603 slide into the horizontal groove 1605. The side wall of the horizontal groove 1605 restricts the up and down movement of the guide block 1603, thereby fixing the relative height between the outer sleeve 14 and the inner sleeve 15. Then, the stop block 2203 of the circulation tank 2201 is opened to check whether the mesh frame 2202 is clean. After cleaning, the stop block 2203 is reset, and coolant is injected through the addition port 2207 to the scale line of the circulation tank 2201. The liquid level is lower than the bottom horizontal plane of the mesh frame 2202.

[0044] The system sets the cutting speed, feed rate, reciprocating frequency of the gear shaper 4 and the rotation speed of the worktable 7. After the equipment is started, the system sends control signals synchronously. The tool holder 3 drives the gear shaper 4 to perform vertical reciprocating motion and rotational motion according to the set parameters. The rotary motor 8 drives the worktable 7 to rotate synchronously, preparing to enter the cutting state.

[0045] When cutting begins, the circulation pump 2206 starts, delivering the purified coolant in the circulation tank 2201 to the nozzle 20 via the discharge pipe 21 and the annular conduit 19. The nozzle 20 sprays coolant into the cutting area to form immersion cooling. The coolant carrying debris is guided by the baffle ring and collected by the diversion shroud 17, and then flows back to the circulation tank 2201 through the diversion pipe 18. It is then filtered in stages by the mesh frame 2202 and the filter plate 2204. The cleaning motor 2208 periodically drives the scraper 2209 to clean the impurities from the filter plate 2204. The impurities are discharged from the drain port 2205. The heat sink 2211 cools the coolant. The purified and cooled coolant is then drawn back by the circulation pump 2206, forming a closed-loop circulation.

[0046] The servo motors 12 of the two sets of radial feed components start synchronously, driving the ball screw 13 to rotate. The slider 11 moves smoothly along the slide groove 10, causing the slide plate 6 to move smoothly. The worktable 7 moves closer to the gear shaper 4 with the slide plate 6. Due to the symmetrical force applied by the two sets of components, the radial load generated by the meshing of the workpiece and the gear shaper 4 is offset, avoiding the deflection deformation of the ball screw 13 and ensuring the radial positioning accuracy of the workpiece. The gear shaper 4 and the workpiece are precisely meshed and begin cutting. After the gear processing reaches the set accuracy, the gear shaper 4 stops moving and resets. The rotary motor 8 stops running, and the servo motors 12 of the two sets of radial feed components reverse, driving the slide plate 6 and the worktable 7 to reset. The circulation pump 2206 is turned off, the drain port 2205 is opened to discharge the chips, and the processed gear workpiece is removed. If continuous processing is required, the above process is repeated after changing the workpiece, without the need to frequently adjust the core parameters of the equipment.

[0047] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A CNC gear shaping machine based on dual-drive synchronous compensation, comprising a bed (1), a column (2) vertically fixed to one side of the top of the bed (1), a tool holder (3) slidably connected to one side of the column (2), a gear shaping cutter (4) detachably installed at the bottom of the tool holder (3), a radial slide (5) slidably disposed on the other side of the top of the bed (1), a slide plate (6) slidably disposed on the top of the radial slide plate (5), a worktable (7) rotatably disposed on the top of the slide plate (6), and a rotary motor (8) for driving the worktable (7) to rotate; Its features are: Two sets of radial feed components are symmetrically provided on the top of the radial slide (5). Both sets of radial feed components are connected to the slide plate (6) to achieve dual-drive synchronous drive. The top of the slide (6) and the outside of the workbench (7) are fitted with an inner protective sleeve (15), and the outer protective sleeve (14) is fitted on the outside of the inner protective sleeve (15). A height adjustment mechanism (16) is provided between the outer sheath (14) and the inner sheath (15); A drainage hood (17) is installed on the outside of the outer sheath (14), and a drainage tube (18) is installed at the end of the drainage hood (17). An annular conduit (19) is fitted on the top of the outer side of the inner sheath (15). The inner sheath (15) is evenly and obliquely arranged in a ring array with nozzles (20) that communicate with the annular conduit (19). An exhaust pipe (21) is installed on the outer side of the annular conduit (19). The end of the bed (1) is provided with a circulation filter mechanism (22), and the ends of the drainage pipe (18) and the discharge pipe (21) are connected to the circulation filter mechanism (22).

2. The CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 1, characterized in that: The radial feed assembly includes a servo motor (12), a ball screw (13), and a slider (11). The servo motor (12) is symmetrically fixed on both sides of the end of the radial slide (5). The output end of the servo motor (12) is connected to one end of the ball screw (13) for transmission. The other end of the ball screw (13) is rotatably connected to the other end of the top of the radial slide (5). The slider (11) is threaded on the outside of the ball screw (13), and the top of the slider (11) is fixedly connected to the bottom of the slide plate (6).

3. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 2, characterized in that: The top of the radial slide (5) is provided with a groove (10) that is compatible with the slider (11). The slider (11) is slidably embedded in the groove (10). The middle position of the top of the radial slide (5) is provided with a limiting groove (9) that is compatible with the rotary motor (8) along the straight direction.

4. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 1, characterized in that: The circulating filtration mechanism (22) includes a circulation box (2201), a mesh frame (2202), a filter plate (2204), a circulation pump (2206), and a cleaning component. The circulation box (2201) is fixed to one side of the bed (1). The mesh frame (2202) is horizontally slidably installed on the top of the circulation box (2201). The filter plate (2204) is inclinedly fixedly installed on the bottom of the circulation box (2201). The top of the filter plate (2204) is provided with a cleaning component. The circulation pump (2206) is fixed to the top of the circulation box (2201). The input end of the circulation pump (2206) is inserted into the circulation box (2201) and located below the filter plate (2204). The output end of the circulation pump (2206) is connected to one end of the discharge pipe (21).

5. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 4, characterized in that: The cleaning assembly includes a cleaning motor (2208), a scraper (2209), and a screw (2210). The cleaning motor (2208) is fixed to the outer wall of the circulation box (2201). The output end of the cleaning motor (2208) is inserted into the circulation box (2201) and connected to one end of the screw (2210). The other end of the screw (2210) is rotatably connected to the inner wall of the circulation box (2201). The scraper (2209) is threaded on the outside of the screw (2210) and its bottom surface is in contact with the top surface of the filter plate (2204).

6. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 5, characterized in that: The circulation box (2201) has an opening on one side wall that is compatible with the wire mesh frame (2202). A stop block (2203) is rotatably installed on the side of the circulation box (2201) and at the top of the opening. The inner side of the stop block (2203) is attached to the end face of the wire mesh frame (2202). A drain port (2205) is provided at the bottom of the circulation box (2201) near the opening. An addition port (2207) is also provided at the top of the circulation box (2201).

7. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 4, characterized in that: Heat sinks (2211) are evenly provided on the outside of the circulation box (2201) and below the filter plate (2204), and the heat sinks (2211) are made of copper-aluminum alloy.

8. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 1, characterized in that: The height adjustment mechanism (16) includes a fixing ring (1601), a vertical rod (1602), and a guide block (1603). The fixing ring (1601) is fixed to the top of the outer side of the inner sheath (15). The vertical rod (1602) is evenly and vertically installed at the bottom of the fixing ring (1601) along the circumference. Vertical grooves (1604) are vertically opened at the positions of the vertical rod (1602) on the outer side of the outer sheath (14). Horizontal grooves (1605) that communicate with the inside of the vertical grooves (1604) are opened on the sides of the vertical grooves (1604). A guide block (1603) that matches the vertical grooves (1604) and horizontal grooves (1605) is fixed at the bottom of the vertical rod (1602).

9. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 1, characterized in that: A retaining ring is fixed circumferentially on the inner wall of the inner sleeve (15), and the retaining ring is located at the bottom of the nozzle (20) and tilted downward.

10. A CNC gear hobbing machine based on dual-drive synchronous compensation according to claim 1, characterized in that: A sealing gasket is provided between the inner sleeve (15) and the worktable (7), and between the outer sleeve (14) and the inner sleeve (15). The sealing gasket is made of rubber material that is resistant to coolant corrosion.

Images