High-speed dry-cutting seven-axis CNC gear hobbing machine

Abstract

The present invention relates to a high-speed dry-cutting seven-axis CNC gear hobbing machine, which includes: a bed device provided with a mounting support; a frame assembly and a gear hobbing device, the gear hobbing device is equipped with a gear hobbing cutter; a multi-stage adjustment frame and a manipulator device, the manipulator device is provided with two or more claw assemblies. A fixture device and a top device installed on the multi-stage adjustment frame, the top device and the fixture device are arranged relative to each other, and the claw assembly is located between the top device and the fixture device when in the processing position. The gear hobbing device and the claw assembly are arranged relative to each other, the frame assembly drives the gear hobbing device to move, and the gear hobbing cutter is used to process the gear workpiece clamped and defined by the fixture device and the top device. The top device and the fixture device jointly define the gear workpiece, which can improve the impact resistance of the gear workpiece and improve the impact force and cutting speed of the gear hobbing cutter on the gear workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of gear hobbing machines, in particular to a high-speed dry-cutting seven-axis numerically controlled gear hobbing machine. Background Art

[0002] The gear hobbing machine processes the tooth surface rough workpiece by a gear hobbing cutter, wherein the gear hobbing cutter is processed by a generating method. The existing CNC gear hobbing machine enables the rough workpiece to be positioned and fixed by workers by assembling the workpiece to a fixture device.

[0003] Chinese patent CN201868023U provides a CNC gear hobbing machine, which includes a main machine and a CNC system; the main machine includes: a base, a column arranged at one end of the base, an axial feed assembly arranged on the column, a hob assembly that axially displaces and processes a workpiece under the control of the axial feed assembly, a radial feed assembly arranged on the base, and a circumferential feed assembly for placing a workpiece that radially displaces under the control of the radial feed assembly.

[0004] Chinese patent application CN 110170839 A also discloses a continuous gear hobbing and chamfering compound machine tool, including a machine platform, a station switching mechanism installed on the machine platform, a gear hobbing mechanism and a chamfering mechanism. The station switching mechanism includes a switching column fixedly installed on the machine platform, a rotating disk rotatably sleeved on the bottom of the switching column, and a plurality of clamping claws slidably installed on the rotating disk. A hanging platform is installed on the bottom of the switching column, and a plurality of makeshift grooves are opened on the hanging platform. A driving mechanism is installed on the hanging platform and at positions corresponding to the makeshift grooves. The driving mechanism is arranged corresponding to the clamping claw, and a clamping block is arranged on the clamping claw. The clamping block extends into the interior of the driving mechanism. A clamping member is also installed on the clamping claw. The clamping member clamps the processed gear, and the clamping claw is adjusted by the driving mechanism to switch between the gear hobbing mechanism and the chamfering mechanism, thereby adjusting the position of the gear circumferentially on the machine platform, realizing simultaneous processing of the gear hobbing and chamfering processes, and saving processing time.

[0005] The gear hobbing machine disclosed above fixes the workpiece by a jig when processing the workpiece, and does not limit the upper part of the workpiece. In the low-speed processing state, the structure can meet the gear processing requirements. For example, when the cutting amount is 0.5mm / r to 0.8mm / r, the gear hobbing cutter can process the workpiece fixed by the jig. However, when the cutting amount exceeds 1.0mm / r, the above structure is difficult to meet the processing requirements of the gear hobbing cutter. The machine tool has difficulty in positioning the workpiece with the jig, and the required jig structure is complex; the workpiece processing accuracy is low, the processing efficiency is low, and other technical problems, so it needs to be improved. Summary of the invention

[0006] In order to overcome the problems existing in the related art, an embodiment of the present invention provides a high-speed dry-cutting seven-axis CNC gear hobbing machine.

[0007] A high-speed dry-cutting seven-axis CNC gear hobbing machine according to an embodiment of the present invention comprises:

[0008] A bed device is provided with a mounting support;

[0009] A frame assembly slidably connected to the bed device and a gear hobbing device installed on the frame assembly, wherein the gear hobbing device is equipped with a gear hobbing cutter;

[0010] A multi-stage adjustment frame mounted on the mounting support and a manipulator device sleeved on the mounting support, the manipulator device is provided with two or more claw assemblies, the claw assemblies include a closed posture for closing and clamping a gear workpiece and an expanded posture for expanding and releasing the gear workpiece; the manipulator device is rotatably connected to the mounting support, and the manipulator device includes a processing position and at least one clamping position;

[0011] A jig device mounted on the bed device and a center device mounted on the multi-stage adjustment frame, the center device and the jig device are arranged opposite to each other, the jaw assembly is located between the center device and the jig device when in the processing position, and the center line of the jig device, the center line of the center device and the center line of the jaw assembly in the processing position are in the same straight line;

[0012] The gear hobbing device is arranged opposite to the claw assembly, the frame assembly drives the gear hobbing device to move, and the gear hobbing cutter is used to process the gear workpiece clamped and limited by the fixture device and the top device.

[0013] In one embodiment, the multi-stage adjustment frame includes a first adjustment seat detachably connected to the mounting pillar, an adjustment drive installed on the first adjustment seat, and a second adjustment seat slidably connected to the first adjustment seat, the first adjustment seat includes an installation space recessed inward from both side surfaces and a mounting hole corresponding to each of the installation spaces, a fastener passes through the mounting hole and is locked to the mounting pillar, the top device is installed on the second adjustment seat, and the adjustment drive is drivingly connected to the second adjustment seat.

[0014] In one embodiment, the top device includes a rotating shaft assembly rotatably mounted on the multi-stage adjustment frame, a pin assembly mounted on the rotating shaft assembly, a locking assembly sleeved on the rotating shaft assembly, a pressure-bearing bearing assembly and a rotating bearing assembly respectively sleeved on both ends of the rotating shaft assembly, the pressure-bearing bearing assembly abuts against one end of the multi-stage adjustment frame, the rotating bearing assembly is mounted on the locking assembly, and the locking assembly is locked to the multi-stage adjustment frame.

[0015] In one embodiment, the mounting support includes a tube body and a grid rib portion distributed on the inner wall surface of the tube body, the outer peripheral wall of the tube body is provided with a planar mounting surface, and the multi-stage adjustment frame is mounted on the mounting surface.

[0016] In one embodiment, the manipulator device includes a turntable drive assembly installed on the bed device, a fixed plate fixed to the mounting support, and a turntable assembly rotatably mounted on the fixed plate, the claw assembly is evenly distributed on the turntable assembly, the turntable drive assembly and the turntable assembly are connected by gear meshing drive, and the turntable drive assembly is spaced apart from the fixture device.

[0017] In one embodiment, the robot device further comprises an unlocking assembly mounted on the mounting support, wherein the unlocking assembly corresponds to the processing position and the clamping position and is used to drive the claw assembly to be opened or closed accordingly.

[0018] In one embodiment, the gear hobbing device includes a tool holder disc assembly installed on the frame assembly and a hob assembly installed on the tool holder disc assembly, the hob assembly pulls and tightens the gear hobbing cutter, the tool holder disc assembly drives the hob assembly to rotate, the center line of the gear hobbing cutter is perpendicular or inclined at a preset angle relative to the center line of the fixture device, and the hob assembly drives the gear hobbing cutter to rotate.

[0019] In one embodiment, the hob assembly includes a hob frame assembled on the rotating cutter disc, a hob drive member installed on the hob frame, a hob drive shaft rotatably connected to the hob frame, an abutment assembly slidably connected to the hob frame and an installation cutter shaft for installing the gear hob, the hob drive shaft and the abutment assembly are arranged opposite to each other, one end of the installation cutter shaft is connected to the hob drive shaft, and the abutment assembly pushes the other end of the installation cutter shaft.

[0020] In one embodiment, the bed device includes a machine tool base and a chip removal frame installed on the machine tool base, the chip removal frame includes a cover body portion mounted on the fixture device and a chip guide portion inclined from one side of the mounting support to the other side of the machine tool base, and the chip guide portion extends to the chip removal space inside the machine tool base.

[0021] In one embodiment, the high-speed dry-cutting seven-axis CNC gear hobbing machine further includes a magnetic slag removal device, which extends from the chip removal space to the outside of the bed device and is used to guide the waste in the chip removal space to be magnetically adsorbed and discharged.

[0022] The technical solution provided by the embodiments of the present invention may include the following beneficial effects: the top device pushes the gear workpiece against the fixture device to fix the upper and lower surfaces of the gear workpiece. The gear hobbing cutter performs dry cutting on the tangent direction of the gear workpiece to machine a toothed structure with high processing efficiency. The top device and the fixture device jointly define the gear workpiece, which can improve the impact resistance of the gear workpiece and improve the impact force and cutting speed of the gear hobbing cutter on the gear workpiece. The manipulator device can automatically load and unload the processed gear workpiece, thereby realizing automatic processing of the gear hobbing machine with a high degree of automation. The pillars are installed to position and support the manipulator device, the multi-stage adjustment frame and the top device, so as to realize the rationality of the overall layout of the machine tool and the full utilization of the processing space.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 It is a schematic structural diagram of a CNC gear hobbing machine according to an exemplary embodiment.

[0026] Figure 2 It is a schematic diagram of a CNC gear hobbing machine bed device with a hidden portion according to an exemplary embodiment.

[0027] Figure 3 It is a schematic assembly diagram of a bed device, a multi-stage adjustment frame and a center device according to an exemplary embodiment.

[0028] Figure 4 It is a schematic cross-sectional structure diagram showing a top device installed on a second adjustment seat according to an exemplary embodiment.

[0029] Figure 5 It is a schematic cross-sectional structural diagram of a claw assembly according to an exemplary embodiment.

[0030] Figure 6 It is a schematic structural diagram of a gear hobbing device according to an exemplary embodiment.

[0031] Figure 7 It is a schematic cross-sectional structural diagram of a gear hobbing device according to an exemplary embodiment.

[0032] Figure 8 It is a schematic structural diagram of a fixture assembly according to an exemplary embodiment.

[0033] Fig. 9It is a schematic structural diagram of a magnetic slag removal device according to an exemplary embodiment.

[0034] In the figure, the bed device 10; the mounting support 11; the tube body 111; the reinforcing rib 112; the mounting space 113; the mounting hole 114; the chip removal frame 12; the machine tool base 13; the frame assembly 20; the gear hobbing device 30; the gear hobbing cutter 31; the hob frame 32; the installation cutter shaft 33; the abutment assembly 34; the abutment frame 341; the abutment telescopic member 342; the abutment shaft 343; the hob drive member 35; the hob drive shaft 35; the hollow shaft 351; the pull rod assembly 352; the push drive member 353; the spring member 354; the tool holder disc assembly 37; the rotating cutter disc 371; the multi-stage adjustment frame 40; the adjustment drive member 41; the second adjustment seat 42; the support seat 421; the sliding seat 4 22; support hole 423; first adjustment seat 43; manipulator device 50; claw assembly 51; claw frame 511; first claw 512; second claw 513; elastic member 514; linkage mechanism 515; turntable assembly 52; fixture device 60; fixture rotating assembly 61; fixture telescopic assembly 62; fixture assembly 63; fixture base 64; top device 70; shaft assembly 71; pressure bearing assembly 72; rotating bearing assembly 73; locking assembly 74; locking shell 741; sealing ring 742; ejector pin assembly 75; unlocking assembly 80; magnetic suction slag removal device 90; slag removal frame 91; conveyor belt assembly 92; magnetic member 93; scraper wheel 94. DETAILED DESCRIPTION

[0035] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0036] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] like Figures 1 to 4 As shown, the present invention provides a high-speed dry-cutting seven-axis CNC gear hobbing machine, which is used to process gears, including spur gears, helical gears, etc. The high-speed dry-cutting seven-axis CNC gear hobbing machine includes a bed device 10, a frame assembly 20, a gear hobbing device 30, a multi-stage adjustment frame 40, a manipulator device 50, a fixture device 60 and a top device 70. The bed device 10 is a rigid frame structure, and a mounting pillar 11 is arranged on the bed device 10. The mounting pillar 11 is a columnar protrusion at one end of the bed device 10, and the multi-stage adjustment frame 40, the manipulator device 50 and the top device 70 are all mounted on the mounting pillar 11.

[0039] In an optional embodiment, the mounting pillar 11 includes a tube body 111 and a grid rib portion distributed on the inner wall surface of the tube body 111, and the outer peripheral wall of the tube body 111 is provided with a planar mounting surface, and the multi-stage adjustment frame 40 is mounted on the mounting surface. The mounting pillar 11 is a tubular structure protruding from the bed device 10, wherein a grid-shaped reinforcement rib 112 is provided on the inner wall surface of the tube body 111, thereby improving the structural strength and shape stability of the tube body 111. The multi-stage adjustment frame 40 is mounted on the tube body 111, and the top device 70 mounted on the multi-stage adjustment frame 40 transmits the force to the tube body 111 through the lever principle, and the mounting pillar 11 constructs a bending and torsion-resistant structure through the internal grid rib portion.

[0040] The frame assembly 20 is slidably connected to the bed device 10, and the gear hobbing device 30 is installed on the frame assembly 20. The frame assembly 20 is slidably connected to the bed device 10 through a guide rail so that the gear hobbing device 30 can move back and forth in a straight line in the sliding direction of the guide rail. The gear hobbing device 30 is equipped with a gear hobbing cutter 31, and the gear hobbing cutter 31 can perform dry cutting processing on the gear workpiece in the moving direction. Preferably, the gear hobbing device 30 is slidably connected to the frame assembly 20, and the gear hobbing cutter 31 can adjust the processing position under the joint movement adjustment of the gear hobbing device 30 and the frame assembly 20. Among them, the sliding direction of the frame assembly 20 on the bed device 10 and the sliding direction of the gear hobbing device 30 on the frame assembly 20 intersect. The gear hobbing cutter 31 dry cuts the tangent direction of the gear workpiece to process a toothed structure, and the processing efficiency is high.

[0041] like Figures 1 to 4As shown, the manipulator device 50 is sleeved on the mounting pillar 11, and accordingly, the range of movement of the manipulator device 50 is distributed in a circle around the center line of the mounting pillar 11. The mounting pillar 11 is arranged at one end of the bed device 10, so that the range of movement of the manipulator device 50 includes the inner side and the outer side of the bed device 10. The manipulator device 50 is rotatably connected to the mounting pillar 11, and the manipulator device 50 includes a processing position and at least one clamping position. Among them, the manipulator device 50 switches the processing position and the clamping position during the rotation process, so that the workpieces grasped by the manipulator device 50 are processed in turn, and the processed workpieces are output one by one. Preferably, the processing position is located in the inner space of the bed device 10, and is arranged opposite to the gear hobbing cutter 31, and the clamping position is located in the outer space of the bed device 10, and is arranged corresponding to the external feeding mechanism.

[0042] The manipulator device 50 is provided with two or more claw assemblies 51, and the claw assemblies 51 include a closed posture for closing and clamping the gear workpiece and an expanded posture for expanding and releasing the gear workpiece. Each claw assembly 51 flexibly switches between the processing position and the clamping position as the manipulator device 50 rotates on the mounting support 11. The specific action process is: the claw assembly 51 closes and clamps the gear workpiece at the clamping position, and the manipulator device 50 rotates to move the gear workpiece to the processing position, then the claw assembly 51 can expand and release the gear workpiece. The manipulator device 50 can automatically load and unload the processed gear workpiece, thereby realizing the automatic processing of the gear hobbing machine, and the degree of automation is high.

[0043] The multi-stage adjustment frame 40 is assembled on the mounting pillar 11, and the transfer positions of the two can be relatively adjusted so that the multi-stage adjustment frame 40 is set at different heights along the center line direction of the mounting pillar 11, and the assembly is flexible. The fixture device 60 is assembled on the bed device 10, and the top device 70 is installed on the multi-stage adjustment frame 40. The top device 70 and the fixture device 60 are arranged relative to each other. The claw assembly 51 is located between the top device 70 and the fixture device 60 when it is in the processing position, and the center line of the fixture device 60, the center line of the top device 70 and the center line of the claw assembly 51 in the processing position are in the same straight line. The gear workpiece is assembled to the fixture device 60, and the top device 70 presses and defines the top center part of the gear workpiece.

[0044] The gear hobbing device 30 is arranged opposite to the claw assembly 51, and the frame assembly 20 drives the gear hobbing device 30 to move. The gear hobbing cutter 31 is used to process the gear workpiece clamped and limited by the fixture device 60 and the top device 70. The top device 70 pushes the gear workpiece to the fixture device 60 to fix the upper and lower surfaces of the gear workpiece. The top device 70 and the fixture device 60 jointly define the gear workpiece, which can improve the impact resistance of the gear workpiece and improve the impact force and cutting speed of the gear workpiece by the gear hobbing cutter 31. The support column 11 is installed to position and support the manipulator device 50, the multi-stage adjustment frame 40 and the top device 70, so as to realize the rationality of the overall layout of the machine tool and the adequacy of the processing space.

[0045] like Figures 1 to 4 As shown, the multi-stage adjustment frame 40 can adjust the top device 70 of different installation heights so that the top device 70 can adapt to the top tightening range and activity range required by different heights. Optionally, the multi-stage adjustment frame 40 includes at least two stages of adjustment mechanisms that are relatively slidably connected. The multi-stage adjustment frame 40 is provided with two or more stages, which can not only improve the overall rigidity of the multi-stage adjustment frame 40, but also expand the activity range of the multi-stage adjustment frame 40 to adapt to a larger activity range.

[0046] In one embodiment, the multi-stage adjustment frame 40 includes a first adjustment seat 43 detachably connected to the mounting pillar 11, an adjustment driving member 41 mounted on the first adjustment seat 43, and a second adjustment seat 42 slidably connected to the first adjustment seat 43, and the top device 70 is mounted on the second adjustment seat 42. The first adjustment seat 43 is mounted on the mounting pillar 11, wherein the height of the mounting pillar 11 is different, and different multi-stage adjustment frames 40 can be adapted, thereby expanding the installation range of the top device 70. The first adjustment seat 43 adjusts the overall installation height of the multi-stage mounting frame of the multi-stage adjustment frame 40 along the length direction of the mounting pillar 11, thereby constituting the installation height adjustment of the top device 70. Further, the second adjustment seat 42 is slidably connected to the first adjustment seat 43, wherein the sliding range of the second adjustment seat 42 constitutes a further adjustment of the installation height of the top device 70. Further, the top device 70 is mounted on the second adjustment seat 42, and the relative installation position of the two is adjustable, thereby constituting another adjustment of the installation height of the top device 70. The installation height of the top device 70 can be adjusted in multiple stages to meet different axial movement range requirements. At the same time, the first adjustment seat 43 and the second adjustment seat 42 both protrude from the outer surface of the mounting pillar 11, with good overall rigidity and adjustable protrusion height to adapt to the requirements of different center distances of the top device 70 from the center of the mounting pillar 11, thereby improving the compatibility of the equipment.

[0047] The first adjustment seat 43 includes an installation space 113 recessed inward from the two side surfaces and an installation hole 114 corresponding to each installation space 113, and the fastener passes through the installation hole 114 and is locked to the installation pillar 11. The first adjustment seat 43 is a rigid frame structure. Optionally, the first adjustment seat 43 is set as a hollow tubular structure; or, the first adjustment seat 43 is set as a U-shaped frame structure. Further, an internal reinforcing rib 112 is set in the space of the first adjustment seat 43, and the reinforcing rib 112 protrudes from the inner side wall of the first adjustment seat 43 toward the center. Preferably, the internal reinforcing rib 112 is configured as a ring rib or a U-shaped convex rib structure.

[0048] The installation plane of the first adjustment seat 43 is fitted to the installation pillar 11, and the side walls on both sides of the installation plane are provided with concave reinforcing walls, and the surrounding space of the reinforcing walls constitutes a groove-shaped installation space 113. The reinforcing wall on one side is flush with the installation plane, and the mounting hole 114 connects the installation plane and the installation space 113. The fastener passes through the mounting hole 114 and is locked to the threaded hole on the installation pillar 11. Preferably, the threaded holes are spaced along the length direction of the installation pillar 11, so that the first adjustment seat 43 can be flexibly adjusted and installed along the length direction of the installation pillar 11. In addition, the reinforcing wall protrudes toward the inside of the first adjustment seat 43 to form a local reinforcement structure. At the same time, the reinforcing wall is built into the installation space 113, increasing the matching area between the first adjustment seat 43 and the installation pillar 11 and maximizing the width of the first adjustment seat 43, thereby improving the overall structural strength of the first adjustment seat 43.

[0049] An adjustment rail is provided on the surface of the first adjustment seat 43 away from the mounting support 11, and the second adjustment seat 42 is slidably connected to the adjustment rail via a slider. The adjustment driver 41 is drivingly connected to the second adjustment seat 42, and the second adjustment seat 42 moves back and forth linearly along the adjustment rail under the drive of the adjustment driver 41. In the length direction, the adjustment driver 41 adjusts the sliding range and sliding height of the second adjustment seat 42 by adjusting the connection position connected to the second adjustment seat 42. In addition, the adjustment driver 41 is installed on the first adjustment seat 43, and the installation height of the first adjustment seat 43 itself is adjustable. In the height direction of the second adjustment seat 42 protruding from the first adjustment seat 43, the second adjustment seat 42 can adjust the overall height by adjusting its own structural dimensions or the height of the slider, thereby adjusting the height position of the top device 70.

[0050] Preferably, the shape of the second adjustment seat 42 includes a sliding seat 422 for mounting a slider and a support seat 421 protruding from the sliding seat 422, and the top device 70 is mounted on the support seat 421. Preferably, the support seat 421 is a long boss structure, and a support hole 423 is provided in the length direction of the support seat 421, and the top device 70 is inserted into the support hole 423 and assembled and connected with the support seat 421. The height of the support seat 421 is used to adjust the centerline position of the top device 70, so that the centerline of the top device 70 is adjusted to a suitable position through the multi-stage adjustment frame 40, so that the centerline of the top device 70 coincides with the centerline of the fixture device 60. In addition, the multi-stage adjustment frame 40 is composed of multiple parts and has good structural rigidity and assembly flexibility.

[0051] Optionally, the multi-stage adjustment frame 40 includes a position sensing component installed on the first adjustment seat 43, and the position sensing component is used to detect the sliding position of the second adjustment seat 42. Optionally, the position sensing component is configured as one of a travel switch, a Hall sensor, and a photoelectric sensor.

[0052] In one embodiment, the top device 70 includes a rotating shaft assembly 71 rotatably mounted on the multi-stage adjustment frame 40, a pin assembly 75 mounted on the rotating shaft assembly 71, a locking assembly 74 sleeved on the rotating shaft assembly 71, and a pressure-bearing bearing assembly 72 and a rotating bearing assembly 73 respectively sleeved on both ends of the rotating shaft assembly 71. The pressure-bearing bearing assembly 72 abuts against one end of the multi-stage adjustment frame 40, and the rotating bearing assembly 73 is mounted on the locking assembly 74, and the locking assembly 74 is locked to the multi-stage adjustment frame 40.

[0053] The rotating shaft assembly 71 is abutted against the stepped surface of the support hole 423 through the pressure bearing assembly 72 to transfer the pressure on the rotating shaft assembly 71 to the second adjustment seat 42. Among them, the pressure bearing assembly 72 can adopt a thrust ball bearing or other rotating element that can withstand greater pressure and maintain flexible rotation. The rotating shaft assembly 71 is installed in the support hole 423 of the support seat 421 and can rotate relative to the support seat 421. Optionally, the rotating shaft assembly 71 includes a connecting shaft and an end cover seat, and the ejector assembly 75 includes a conical ejector installed on the connecting shaft, and the end cover seat is sleeved on the conical ejector and locked to the support seat 421 to limit the conical ejector to the connecting shaft. Preferably, the conical ejector and the connecting shaft are plug-in matched, and the matching surfaces of the two are conical surfaces. Optionally, the end cover seat is provided with a nozzle, and the nozzle is connected to the pressure bearing assembly 72.

[0054] The other end of the rotating shaft assembly 71 passes through the support seat 421 and is sleeved and connected with a rotating bearing assembly 73. The outer ring of the rotating bearing assembly 73 is installed on the locking assembly 74, and the locking assembly 74 is configured as a cover structure. The locking assembly 74 is installed on the other end of the support seat 421, which can limit the support of the rotating shaft assembly 71, facilitate the adjustment of the sealing between the locking assembly 74 and the rotating shaft assembly 71, and prevent dirt from entering the activity space of the rotating shaft assembly 71. Preferably, the locking assembly 74 includes a locking shell 741 and a sealing ring 742 installed in the locking shell 741, the sealing ring 742 is sleeved on the rotating shaft assembly 71, and the locking shell 741 is fixed to the support seat 421. Optionally, the locking shell 741 is provided with an oil nozzle mechanism, and the oil nozzle mechanism is connected with the rotating bearing assembly 73.

[0055] like Figures 1 to 5 As shown, the manipulator device 50 is sleeved on the mounting pillar 11 and rotates relative to the mounting pillar 11 to switch the claw assembly 51 and the gear workpiece clamped by the claw assembly 51 at different positions, wherein the mounting pillar 11 supports the manipulator device 50 .

[0056] In one embodiment, the manipulator device 50 includes a turntable drive assembly mounted on the bed device 10, a fixed plate fixed to the mounting support 11, and a turntable assembly 52 rotatably mounted on the fixed plate, and the claw assemblies 51 are evenly distributed on the turntable assembly 52 and rotate and adjust the position with the turntable assembly 52. ​​The turntable drive assembly and the turntable assembly 52 are connected by gear meshing drive, and the turntable drive assembly is spaced apart from the fixture device 60.

[0057] The fixed plate is directly fixed to the mounting support 11 to form a stable lifting foundation. The turntable assembly 52 is mounted on the fixed plate, and the joint surface of the two includes a sliding connection or a rolling connection. Specifically, the turntable assembly 52 and the fixed plate are slidably connected, and the lower surface of the turntable assembly 52 is attached to the upper surface of the fixed plate, and the joint surface between the two is filled with lubricating oil. Preferably, the fixed plate limits the upper surface of the turntable assembly 52 so that the turntable assembly 52 is in a plane rotation. Optionally, at least part of the cross-section of the fixed plate is U-shaped or J-shaped, so as to confine at least part of the turntable assembly 52 within a limited space, and the rotation plane is good.

[0058] Optionally, the rotating disk assembly 52 and the fixed disk are connected in a rolling manner, which is different from the sliding connection disclosed in the above embodiment in that an annular rolling groove or a spaced positioning groove is provided on the fixed disk, and balls are distributed in the rolling groove or the positioning groove. The rotating disk assembly 52 is mounted on the balls to form a rolling connection with low rolling resistance.

[0059] Gear teeth are provided on the outer peripheral wall of the turntable assembly 52, and the turntable drive assembly is meshed with the gear teeth to form a gear meshing drive structure. Preferably, a mounting frame is fixed to the side of the mounting pillar 11, and the turntable drive assembly is mounted on the mounting frame and is connected to the gear teeth. Preferably, the center line of the turntable drive assembly is parallel to the length direction of the mounting pillar.

[0060] The claw assembly 51 rotates with the turntable assembly 52 to be in different positions. Among them, the claw assembly 51 adopts an unpowered automatic clamping mechanism, which is unlocked and unfolded by external pressure. Accordingly, the claw assembly 51 rotates at any angle with the turntable assembly 52. ​​In one embodiment, the manipulator device 50 also includes an unlocking assembly 80 installed on the mounting pillar 11, and the unlocking assembly 80 corresponds to the processing position and the clamping position, and is used to drive the claw assembly 51 to unfold or close accordingly. The unlocking assembly 80 triggers the claw assembly 51 through a mechanical structure, so that the claw assembly 51 can perform the unfolding function, and perform self-closing after the unlocking assembly 80 is away. In an optional embodiment, the claw assembly 51 includes a claw frame 511, a first claw 512 and a second claw 513 hingedly mounted on the claw frame 511, a linkage mechanism 515 connecting the first claw 512 and the second claw 513, and at least one elastic member 514, and the elastic member 514 acts on the elastic preload force of the first claw 512 and the second claw 513 to close relative to each other. The unlocking assembly 80 triggers the linkage mechanism 515 , so that the linkage mechanism 515 drives the first clamping claw 512 and the second clamping claw 513 to open to overcome the elastic pre-tightening force.

[0061] Preferably, the linkage mechanism 515 includes a connecting rod mechanism, which includes a trigger rod protruding from the claw frame 511. The connecting rod structure is approximately a "human" shaped structure and is hingedly connected to the first claw 512 and the second claw 513 inside the claw frame 511. The unlocking component 80 is configured as a telescopic driving member or a cam mechanism with varying heights to drive the trigger rod to move a preset length so that the first claw 512 and the second claw 513 can be unfolded.

[0062] Preferably, the linkage mechanism 515 includes a cam rod, which includes a wheel shaft, a symmetrical cam installed at one end of the wheel shaft, and a claw gear installed at the other end of the wheel shaft. The first claw 512 and the second claw 513 abut against the symmetrical cam under the elastic force of the spring. The unlocking assembly 80 is configured as a rack mechanism that moves telescopically. The rack mechanism drives the claw gear to rotate during the telescopic movement, thereby driving the symmetrical cam to move. The symmetrical cam drives the first claw 512 and the second claw 513 to expand through the fluctuation change, and retracts after passing the vertex of the symmetrical cam.

[0063] Preferably, a rotatably connected positive and negative threaded stud and a claw gear mounted on the positive and negative threaded stud are installed in the claw frame 511, and the first claw 512 and the second claw 513 are slidably connected to the claw frame 511, and the first claw 512 and the second claw 513 are respectively threadedly connected to the positive and negative threaded stud to achieve synchronous closing or separation. Correspondingly, the unlocking component 80 is configured as a rack mechanism that moves telescopically, and the rack mechanism drives the claw gear to rotate during the telescopic movement, thereby driving the first claw 512 and the second claw 513 to move. In addition, after the rack mechanism is away from the linkage mechanism 515, the manipulator device 50 can rotate arbitrarily.

[0064] Optionally, the first claw 512 and the second claw 513 are respectively hingedly connected to the claw frame 511, a first spring is provided between the first claw 512 and the claw frame 511, and a second spring is provided between the second claw 513 and the claw frame 511. The unlocking assembly 80 includes an unlocking hydraulic cylinder and a wedge or cam installed on the output shaft of the unlocking hydraulic cylinder. When the unlocking hydraulic cylinder is extended, the wedge or cam is inserted between the first claw 512 and the second claw 513 to push the first claw 512 and the second claw 513 to rotate relative to each other, thereby releasing the workpiece. When the unlocking hydraulic cylinder is retracted, the first claw 512 and the second claw 513 are automatically reset under the elastic force of their respective springs. Optionally, the first spring and the second spring are configured as compression springs.

[0065] like Figures 1 to 4 , Figure 8 As shown, the jig device 60 includes a jig base 64 installed on the bed device 10, a jig rotating assembly 61 rotatably connected to the jig base 64, and a jig assembly 63 detachably installed on the jig rotating assembly 61. The jig rotating assembly 61 is located in the frame of the bed device 10 to drive the jig assembly 63 to rotate. The jig assembly 63 is located outside the bed device 10 and protrudes toward the top device 70, and its height is less than the height of the rotating plane of the claw assembly 51. The moving gear workpiece grasped by the claw assembly 51 is supported by the jig assembly 63, and the ejector assembly 75 is ejected against the center hole of the gear workpiece to realize automatic centering of the gear workpiece. At the same time, the jig assembly 63 drives the gear workpiece and the ejector assembly 75 to rotate under the drive of the jig rotating assembly 61, so that the gear hobbing cutter 31 can process gear teeth on the outer peripheral wall of the gear workpiece. Optionally, the jig rotating assembly 61 includes a jig rotating shaft, a jig gear fixed to the jig rotating shaft, and a jig driving member for driving the jig gear, and the jig rotating shaft is rotatably connected to the jig base 64 .

[0066] Furthermore, the jig device 60 includes a jig telescopic assembly 62 mounted on the jig rotating shaft, and the jig telescopic assembly 62 can telescope along the center line of the jig device 60 to promote the partial telescopic movement of the jig assembly 63. Optionally, the jig assembly 63 includes a jig body and a lifting body slidably connected to the jig body, and the lifting body receives the gear workpiece on the claw assembly 51 under the drive of the jig telescopic assembly 62, or lifts up the processed gear workpiece.

[0067] After the fixture device 60 and the top device 70 complete the clamping and positioning of the workpiece, the gear hobbing device 30 performs gear processing. The gear hobbing device 30 includes a tool holder disc assembly 37 installed on the frame assembly 20 and a hob assembly installed on the tool holder disc assembly 37. The hob assembly pulls and tightens the gear hobbing cutter 31, and the tool holder disc assembly 37 drives the hob assembly to rotate. The center line of the gear hobbing cutter 31 is perpendicular or inclined at a preset angle relative to the center line of the fixture device 60, and the hob assembly drives the gear hobbing cutter 31 to rotate.

[0068] like Figures 1 to 7 As shown, the tool holder disc assembly 37 is installed on the frame assembly 20, and the frame assembly 20 as a whole moves linearly along the bed device 10 to approach or move away from the fixture device 60. Further, the gear hobbing device 30 is installed on the frame assembly 20 and moves up and down along the frame assembly 20. Optionally, the lifting direction of the gear hobbing device 30 is perpendicular to the moving direction of the frame assembly 20. The gear hobbing cutter 31 cuts the gear workpiece on the moving path during the lifting and moving process of the gear hobbing device 30, so as to obtain accurate gear tooth processing. Alternatively, the gear hobbing cutter 31 moves to a height corresponding to the gear tooth workpiece, and the gear workpiece is processed by rotating the gear hobbing cutter 31. Or the gear hobbing cutter 31 rotates and moves synchronously in a linear manner to realize the processing of the gear tooth workpiece. Among them, the gear workpiece rotates under the drive of the fixture device 60 to process gear teeth of different angles.

[0069] Further, the tool holder disc assembly 37 can be rotatably mounted on the frame assembly 20 so that the center line of the gear hobbing cutter 31 can intersect with the lifting direction of the gear hobbing device 30, thereby forming bevel gear or helical gear processing with different processing angles. Among them, the tool holder disc assembly 37 includes a rotating cutter disc 371, a turntable shaft mounted on the rotating cutter disc 371, and a cutter disc driving member connected to the turntable shaft, and the turntable shaft is plugged and rotatably connected to the frame assembly 20. The hob assembly is mounted on the rotating cutter disc 371 so that the hob assembly rotates with the rotating cutter disc 371. Further, the hob assembly is slidably connected to the rotating cutter disc 371 so that the radial position of the hob assembly on the rotating cutter disc 371 can be linearly adjusted.

[0070] In one embodiment, the hob assembly includes a hob frame 32 mounted on a rotating cutter disc 371, a hob drive member 35 mounted on the hob frame 32, a hob drive shaft 35 rotatably connected to the hob frame 32, an abutment assembly 34 slidably connected to the hob frame 32, and a mounting cutter shaft 33 for mounting the gear hob 31, wherein the hob drive shaft 35 and the abutment assembly 34 are arranged opposite to each other and rotate coaxially. One end of the mounting cutter shaft 33 is connected to the hob drive shaft 35, and the abutment assembly 34 abuts against the other end of the mounting cutter shaft 33. The hob drive shaft 35 drives the mounting cutter shaft 33 and the abutment portion of the abutment assembly 34 to rotate under the drive of the hob drive member 35. Optionally, the abutment assembly 34 includes an abutment frame 341 slidably connected to the hob frame 32, an abutment shaft 343 rotatably connected to the abutment frame 341, and an abutment telescopic member 342 fixedly connected to the abutment frame 341, the abutment telescopic member 342 drives the abutment frame 341 to slide linearly relative to the hob frame 32, and the abutment shaft 343 abuts against the mounting cutter shaft 33 and can rotate with the mounting cutter shaft 33. Optionally, the abutment telescopic member 342 is embedded in the hob frame 32, such as the abutment telescopic member 342 is configured as a hydraulic cylinder assembly.

[0071] Optionally, the hob drive shaft 35 is connected to the installation cutter shaft 33 by threads to pull the installation cutter shaft 33 to move axially. The hob drive shaft 35 includes a hollow shaft 351 rotatably connected to the hob frame 32, a push drive member 353 installed on the hob frame 32, a pull rod assembly 352 slidably connected to the hollow shaft 351, and a spring member 354 sleeved on the pull rod assembly 352, the spring member 354 elastically abuts against the hollow shaft 351 to guide the pull rod assembly 352 to protrude toward one side of the push drive member 353. The push drive member 353 pushes the pull rod assembly 352 to protrude toward the abutment assembly 34 to facilitate the connection of the installation cutter shaft 33 to the pull rod assembly 352, and the push drive member 353 retracts so that the pull rod assembly 352 pulls the installation cutter shaft 33 to lock to the hob frame 32 and the hob drive shaft 35 under the action of the elastic preload force to form a tight connection. Preferably, the mating surface for mounting the cutter shaft 33 and the rolling cutter frame 32 is a conical surface.

[0072] In one embodiment, the bed device 10 includes a machine tool base 13 and a chip removal frame 12 installed on the machine tool base 13, and the chip removal frame 12 includes a cover body portion mounted on the fixture device 60 and a chip guide portion inclined from one side of the mounting support 11 to the other side of the machine tool base 13, and the chip guide portion extends to the chip removal space inside the machine tool base 13. The bottom of the machine tool base 13 is set as a hollow chip removal space, which is used to collect and gather the chips generated by the gear hobbing device 30 when processing the gear workpiece. Optionally, the chips are carbon steel or metal chips containing ferromagnetic materials. A chip removal channel connected to the chip removal space is provided on the machine tool base 13, and the chip guide frame is a guiding structure formed by bending a sheet metal part. Preferably, the chip guide frame is made of stainless steel to improve the guiding performance and avoid chip retention.

[0073] Optionally, the chip guide rack is provided with two or more chip guide channels, each chip guide channel adopts an inclined guide surface, and the inclination angle of the guide surface is set to 60 degrees to 70 degrees relative to the horizontal plane to achieve a chip guiding effect. Optionally, the bottom of the chip guide channel is set to an arc-shaped surface to form a stacking structure with gradually increasing self-weight, so that the chips can quickly slide out of the chip guide channel under the action of their own weight. Furthermore, the guide surface is provided with at least one inwardly arched and protruding arc-shaped surface, which is arranged along the length direction of the guide surface to separate the bottom surface of the chip guide channel into at least two recessed areas to prevent further accumulation of chips.

[0074] like Fig. 9 As shown, a waste frame can be installed in the chip removal space to receive the debris. However, the operation space required for dragging the waste frame or forking the waste frame is large. In one embodiment, the high-speed dry cutting seven-axis CNC gear hobbing machine also includes a magnetic slag removal device 90, which extends from the chip removal space to the outside of the bed device 10, and is used to guide the waste in the chip removal space to be magnetically adsorbed and discharged. The magnetic slag removal device 90 uses the magnetic suction principle to guide the debris from the chip removal space to be output from the bed device 10, and a waste frame for receiving the debris is provided outside the bed device 10. Optionally, the magnetic slag removal device 90 is arranged to be tilted upward to guide the debris to be discharged. Optionally, the magnetic slag removal device 90 includes a slag removal frame 91, a conveyor belt assembly 92 installed on the slag removal frame 91, a magnetic member 93 embedded in the conveyor belt assembly 92, and a scraper wheel 94 installed on the slag removal frame 91, and the scraper wheel 94 is arranged at an interval from the conveyor belt assembly 92. The conveyor belt assembly 92 absorbs and guides the debris during the transmission process, and the scraper wheel 94 scrapes the debris from the conveyor belt assembly 92 to the waste frame. The conveyor belt assembly 92 uses the magnetic suction principle to absorb and transport the debris, which can not only prevent the debris from rushing in, but also output the fine debris evenly, thereby improving the output effect. The magnetic suction slag removal device 90 ensures that the iron chips do not stay in the bed device 10, and at the same time, the cutting heat is well transmitted, which has a good improvement on the thermal balance and deformation during the machine tool processing process.

[0075] Furthermore, movable baffles are arranged at intervals on the conveyor belt assembly 92. The movable baffles can be swingably arranged on the conveyor belt assembly 92 to scoop up the debris, and can also swing under the action of the scraping wheel 94 to further increase the conveying amount of the debris.

[0076] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0077] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A high-speed dry-cutting seven-axis CNC gear hobbing machine, characterized in that: include: A bed device is provided with a mounting support; A frame assembly slidably connected to the bed device and a gear hobbing device installed on the frame assembly, wherein the gear hobbing device is equipped with a gear hobbing cutter; A multi-stage adjustment frame mounted on the mounting support and a manipulator device sleeved on the mounting support, the manipulator device is provided with two or more claw assemblies, the claw assemblies include a closed posture for closing and clamping a gear workpiece and an expanded posture for expanding and releasing the gear workpiece; the manipulator device is rotatably connected to the mounting support, and the manipulator device includes a processing position and at least one clamping position; A jig device mounted on the bed device and a center device mounted on the multi-stage adjustment frame, the center device and the jig device are arranged opposite to each other, the jaw assembly is located between the center device and the jig device when in the processing position, and the center line of the jig device, the center line of the center device and the center line of the jaw assembly in the processing position are in the same straight line; The gear hobbing device is arranged opposite to the claw assembly, the frame assembly drives the gear hobbing device to move, and the gear hobbing cutter is used to process the gear workpiece clamped and limited by the fixture device and the top device; The multi-stage adjustment frame includes a first adjustment seat detachably connected to the mounting support, an adjustment drive installed on the first adjustment seat, and a second adjustment seat slidably connected to the first adjustment seat, the first adjustment seat includes an installation space recessed inwardly from two side surfaces and a mounting hole corresponding to each of the installation spaces, a fastener passes through the mounting hole and is locked to the mounting support, the top device is installed on the second adjustment seat, and the adjustment drive is drivingly connected to the second adjustment seat; The top device includes a shaft assembly rotatably mounted on the multi-stage adjustment frame, a pin assembly mounted on the shaft assembly, a locking assembly sleeved on the shaft assembly, a pressure bearing assembly and a rotating bearing assembly sleeved on both ends of the shaft assembly, the pressure bearing assembly abuts against one end of the multi-stage adjustment frame, the rotating bearing assembly is mounted on the locking assembly, and the locking assembly is locked to the multi-stage adjustment frame; The gear hobbing device comprises a tool holder disc assembly mounted on the frame assembly and a hob assembly mounted on the tool holder disc assembly, the hob assembly pulls and tightens the gear hobbing cutter, the tool holder disc assembly drives the hob assembly to rotate, the center line of the gear hobbing cutter is perpendicular or inclined at a preset angle relative to the center line of the fixture device, and the hob assembly drives the gear hobbing cutter to rotate; The tool holder disc assembly includes a rotating cutter disc, a turntable shaft mounted on the rotating cutter disc and a cutter disc driving member connected to the turntable shaft, the turntable shaft is plugged and rotatably connected to the frame assembly, the hob assembly includes a hob frame assembled on the rotating cutter disc, a hob driving member mounted on the hob frame, a hob driving shaft rotatably connected to the hob frame, an abutment assembly slidably connected to the hob frame and a mounting cutter shaft for mounting a gear hob, the hob driving shaft and the abutment assembly are arranged opposite to each other, one end of the mounting cutter shaft is connected to the hob driving shaft, and the abutment assembly abuts against the other end of the mounting cutter shaft; The rotating shaft assembly abuts against the step surface of the supporting hole through the pressure bearing assembly to transmit the pressure on the rotating shaft assembly to the second adjustment seat; The rotating shaft assembly includes a connecting shaft and an end cover seat, the ejector assembly includes a conical ejector installed on the connecting shaft, and the end cover seat is sleeved on the conical ejector and locked on the support seat; One end of the rotating shaft assembly passes through the support seat and is sleeved and connected with a rotating bearing assembly. The outer ring of the rotating bearing assembly is installed on the locking assembly. The locking assembly is configured as a cover structure and is installed on one end of the support seat. The locking assembly includes a locking shell and a sealing ring installed in the locking shell, the sealing ring is sleeved on the rotating shaft assembly, and the locking shell is fixed to the support seat; the locking shell is provided with an oil nozzle mechanism, and the oil nozzle mechanism is connected to the rotating bearing assembly; The hob drive shaft drives the abutment part of the hob shaft and the abutment assembly to rotate under the drive of the hob drive member; The abutment assembly comprises an abutment frame slidably connected to the hob frame, an abutment shaft rotatably connected to the abutment frame, and an abutment telescopic member fixedly connected to the abutment frame, the abutment telescopic member drives the abutment frame to slide linearly relative to the hob frame, the abutment shaft abuts against the mounting cutter shaft and can rotate with the mounting cutter shaft, and the abutment telescopic member is embedded in the hob frame; The hob drive shaft is connected to the installation cutter shaft by threads to pull the installation cutter shaft to move axially. The hob drive shaft includes a hollow shaft rotatably connected to the hob frame, a push drive member installed on the hob frame, a pull rod assembly slidably connected to the hollow shaft, and a spring member sleeved on the pull rod assembly. The spring member elastically abuts against the hollow shaft to guide the pull rod assembly to protrude toward one side of the push drive member; the push drive member pushes the pull rod assembly to protrude toward the abutment assembly to facilitate the installation cutter shaft to be connected to the pull rod assembly; the push drive member retracts, so that the pull rod assembly pulls the installation cutter shaft to lock it to the hob frame and the hob drive shaft under the action of elastic preload, and the mating surface of the installation cutter shaft and the hob frame is a conical surface.

2. The high-speed dry-cutting seven-axis CNC gear hobbing machine according to claim 1, characterized in that: The mounting support comprises a tube body and a grid rib portion distributed on the inner wall surface of the tube body. The outer peripheral wall of the tube body is provided with a planar mounting surface, and the multi-stage adjustment frame is mounted on the mounting surface.

3. The high-speed dry-cutting seven-axis CNC gear hobbing machine according to claim 1, characterized in that: The manipulator device includes a turntable drive assembly installed on the bed device, a fixed plate fixed to the mounting support, and a turntable assembly rotatably mounted on the fixed plate, the claw assemblies are evenly distributed on the turntable assembly, the turntable drive assembly and the turntable assembly are connected by gear meshing drive, and the turntable drive assembly is spaced apart from the fixture device.

4. The high-speed dry-cutting seven-axis CNC gear hobbing machine according to claim 3 is characterized in that: The robot device also includes an unlocking component installed on the mounting pillar, and the unlocking component corresponds to the processing position and the clamping position, and is used to drive the claw assembly to expand or close accordingly.

5. The high-speed dry-cutting seven-axis CNC gear hobbing machine according to claim 1, characterized in that: The bed device includes a machine tool base and a chip removal frame installed on the machine tool base. The chip removal frame includes a cover body portion mounted on the fixture device and a chip guide portion inclined from one side of the mounting support to the other side of the machine tool base. The chip guide portion extends to the chip removal space inside the machine tool base.

6. The high-speed dry-cutting seven-axis CNC gear hobbing machine according to claim 5, characterized in that: The high-speed dry-cutting seven-axis CNC gear hobbing machine also includes a magnetic slag removal device, which extends from the chip removal space to the outside of the bed device and is used to guide the waste in the chip removal space to be magnetically adsorbed and discharged.

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