Numerical control gear hobbing machine for face gear and face gear

Abstract

The invention discloses a face gear and a numerical control gear hobbing machine thereof.The numerical control gear hobbing machine comprises a lathe bed device, the lathe bed device comprises a first lathe bed assembly and a second lathe bed assembly, and the first lathe bed assembly is axially perpendicular to the second lathe bed assembly; the first guide assembly is slidably connected to the top of the first lathe bed assembly, and a supporting plate assembly is arranged on the side, close to the second lathe bed assembly, of the first guide assembly; the hob head assembly is arranged on the supporting plate assembly, and the supporting plate assembly moves in the full-length direction; the online measuring system and the automatic tool setting system are arranged on the hob head assembly; and the second guide assembly is slidably connected to the top of the second lathe bed assembly, and a first station and a second station are installed at the top of the second guide assembly. When the hob head assembly is used for machining the face gear, a hob blade is in linear contact with the face gear, the feed amount is increased, and the machining efficiency is improved; and secondly, dual-mode machining operation is achieved, machining is conducted on one workbench, a new face gear is replaced on the other workbench, and efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of face gear processing, and in particular relates to a CNC gear hobbing machine for face gears and the face gears. Background Art

[0002] Face gear is a new type of gear structure. The gear pair formed by face gear and cylindrical gear is used for power transmission between intersecting or staggered axes. Its special tooth surface form makes the transmission have the characteristics of large transmission ratio, good interchangeability, excellent torque transmission performance, etc. It can reduce the number of stages of traditional systems, significantly reduce the weight of the transmission system and improve the power density. At the same time, face gear transmission has strong flexibility and adaptability, and can be suitable for transmission occasions with any axis angle. Face gear transmission has a wide range of application value in aviation, aerospace, weapons, automobiles and other industries.

[0003] At present, there are two main processing methods for rough machining of face gear teeth, one is to use a machining center for milling, and the other is to use a face gear turning machine for turning. Therefore, the processing equipment used is a general-purpose machining center and a face gear turning machine. When machining by a machining center, three-axis machining centers and five-axis machining centers are mainly used; among them, when machining by a three-axis machining center, the face gear is mounted on a workbench, and while the milling cutter rotates, the gear teeth are machined by interpolating two linear axes along the radial movement of the face gear and feeding the linear axes along the axial movement of the face gear. The machined tooth surface is repeatedly machined by the milling cutter along the tooth width direction until the entire tooth surface is machined. At this time, the face gear does not move, and another tooth is machined until the entire face gear is machined; when machining by a five-axis machining center, the face gear is mounted on a rotary table, and while the milling cutter rotates, two linear axes are interpolated along the radial movement of the face gear and the linear axes are fed in along the axial movement of the face gear. The gear teeth are processed by linear axis interpolation and linear axis feed along the axial movement of the face gear. The milling cutter repeatedly processes along the width of the face gear until the entire tooth surface is processed. At this time, the workbench rotates the angle of one tooth and processes another tooth until the entire face gear is processed. Due to the small space at the root of the face gear, the tool diameter used in processing is small, and the processing speed and cutting amount cannot be large, otherwise it will cause tool breakage, resulting in low processing efficiency. In addition, the three-axis and five-axis machining centers do not process face gears continuously, so there are interpolation tool errors in processing, low processing accuracy, and discontinuous processing efficiency is generally slow.

[0004] When using a face gear turning machine for processing, there is currently no special equipment in China, only a turning machine modified from a bevel gear milling machine. During turning, the turning cutter spindle intersects with the face gear axis. While the turning cutter and the face gear rotate, the turning cutter moves along the axial direction of the face gear and moves along the radial direction of the face gear to complete the face gear gear processing. When the turning cutter processes the face gear, the tip of the cutter is in point contact with the face gear. The relationship between the gear cutting cutter and the face gear is that the number of teeth on the gear cutting cutter is the number of teeth on the cylindrical gear meshing with the face gear. When the face gear is being cut, the tip of the cutter wears faster because the tip of the cutter is in point contact with the face gear. In order to reduce the wear of the gear cutting cutter, a small feed amount is used for processing, and the processing efficiency is low. Because the number of teeth on the gear cutting cutter used to process the face gear is the same as the number of teeth on the cylindrical gear meshing with the face gear, different gear cutting cutters need to be customized for face gears of different module specifications, which is costly. After gear cutting, wear of the gear cutting cutter is inevitable. After wear, it needs to be repaired edge by edge. Because the entire blade of the gear cutting cutter is the shape of the cylindrical gear teeth meshing with the face gear, a special five-axis grinding machine is required for repair, which is costly and difficult. Summary of the invention

[0005] The object of the present invention is to provide a CNC gear hobbing machine and a face gear for face gears, so as to solve the technical defects of the prior art in which rough machining of face gears using a machining center or a face gear machining turning machine is difficult, costly and inefficient.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a CNC gear hobbing machine for a face gear is provided, comprising: The bed device comprises a first bed component and a second bed component, wherein the first bed component and the second bed component are axially perpendicular to each other; A first guide assembly is slidably connected to the top of the first bed assembly, and a support plate assembly is provided on a side of the first guide assembly close to the second bed assembly; The hob assembly is arranged on the support plate assembly, and the support plate assembly is displaced in the longitudinal direction; An online measuring system and an automatic tool setting system are arranged on the hob assembly; The second guide assembly is slidably connected to the top of the second bed assembly, and a No. 1 workstation and a No. 2 workstation are installed on the top of the second guide assembly.

[0007] Furthermore, the hob assembly includes a slide seat, the slide seat cooperates with the support plate assembly, and the online measurement system and the automatic tool setting system are installed on the top of the slide seat; The opposite ends of the slide are equipped with bearing seats and spindle boxes, the end of the spindle box is equipped with a support shaft, the outer side of the support shaft is equipped with a gear hobbing cutter, a first adjustment sleeve and a second adjustment sleeve, and the end of the support shaft is installed in the bearing seat.

[0008] Furthermore, the gear hobbing cutter is installed between the first adjustment sleeve and the second adjustment sleeve.

[0009] Furthermore, the No. 1 workstation and the No. 2 workstation are spaced apart from each other, and a first face gear blank is installed on the top of the No. 1 workstation, and a second face gear blank is installed on the top of the No. 2 workstation.

[0010] Furthermore, a first workbench rotating body is installed on the top of the No. 1 workstation, a first tooling is installed on the top of the first workbench rotating body, and the first face gear blank is installed on the top of the first tooling.

[0011] Furthermore, a second workbench rotating body is installed on the top of the second workstation, a second tooling is installed on the top of the second workbench rotating body, and a second face gear blank is installed on the top of the second tooling.

[0012] Further, the support plate assembly includes a support plate, the support plate is slidably connected to the first guide assembly, and the support plate and the first guide assembly are axially perpendicular; A second guide rail and a second motor are installed on the top of the support plate, a second lead screw is connected to the driving end of the second motor, and an end of the second lead screw extends into the second guide rail and cooperates with the hob assembly.

[0013] Furthermore, the first bed assembly and the second bed assembly have the same structure.

[0014] Furthermore, the hob assembly is located above the No. 1 workstation and the No. 2 workstation.

[0015] In a second aspect, a face gear is provided, comprising a face gear body, wherein the face gear body is subjected to rough machining before heat treatment or fine machining after heat treatment using the CNC gear hobbing machine as described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the hob assembly installed on the support plate assembly is used to process the face gear, the hob blade is in linear contact with the face gear, which increases the feed amount and improves the processing efficiency. Secondly, the No. 1 and No. 2 stations installed on the second guide assembly realize dual-mode processing operations, one workbench is used for processing, and the other workbench replaces the new face gear, which improves efficiency.

[0017] 2. In gear hobbing based on the principle of generating method, when machining the opposite gear, the rotational motion of the hob and the tooth separation motion work together to form the involute tooth shape of the gear with high precision.

[0018] 3. Through the precise cooperation of the first adjustment sleeve and the second adjustment sleeve, the position of the gear hobbing cutter can be precisely adjusted, which helps to ensure the accurate position of the gear hobbing cutter during the processing, thereby improving the processing accuracy. The first adjustment sleeve and the second adjustment sleeve allow the axial and radial positions of the gear hobbing cutter to be adjusted, which can meet the processing requirements of face gears of different specifications and shapes, and improve the flexibility and adaptability of the equipment. In addition, the gear hobbing cutter is clamped between the first adjustment sleeve and the second adjustment sleeve. This design helps to provide stable support, reduce vibration and tool wear during the processing, and extend the service life of the tool.

[0019] 4. The two workstations allow the equipment to immediately start processing the blanks at another workstation while waiting for one workstation to complete processing, thereby optimizing the resource utilization of the equipment, reducing the idle time of the equipment, and improving the utilization rate of the equipment.

[0020] 5. The first worktable rotary body allows the first tooling and the first face gear blank thereon to rotate, so that the position and angle of the face gear blank can be easily adjusted during the processing to meet different processing requirements, improve the processing flexibility, and enable the equipment to handle more complex face gear processing tasks. By accurately controlling the rotation of the first worktable rotary body, it can be ensured that the first tooling and the first face gear blank thereon maintain the correct position and posture during the processing, which helps to reduce processing errors and improve processing accuracy, thereby ensuring the quality of the face gear.

[0021] 6. The combination of the second worktable rotary body and the second tooling enables the second face gear blank to be rotated and adjusted during the processing, thereby meeting more complex processing requirements, improving processing flexibility and efficiency, and enabling the equipment to process two face gear blanks of different specifications or shapes at the same time, further shortening the production cycle. By precisely controlling the rotation of the second worktable rotary body, it is possible to ensure that the second tooling and the second face gear blank on it maintain the correct position and posture during the processing, which helps to reduce processing errors and improve processing accuracy, thereby ensuring that the face gears processed at the two stations have consistent high quality.

[0022] 7. By driving the second lead screw to move in the second guide rail through the second motor, precise position control of the hob assembly in the vertical axis direction can be achieved, which helps to ensure that the hob assembly can be accurately moved to the desired position during the processing, thereby improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The overall schematic diagram of the CNC gear hobbing machine for face gears provided by the present invention; Figure 2 A side view of a CNC gear hobbing machine for face gears provided by the present invention; Figure 3 A diagram defining the motion axis of a CNC gear hobbing machine for face gears provided by the present invention; Figure 4 A schematic diagram of a center column of a CNC gear hobbing machine for face gears provided by the present invention; Figure 5 A schematic diagram of a support plate in a CNC gear hobbing machine for face gears provided by the present invention; Figure 6 A schematic diagram of a hob assembly in a CNC gear hobbing machine for face gears provided by the present invention; Figure 7 A schematic diagram of a workstation in a CNC gear hobbing machine for face gears provided by the present invention; Figure 8 The present invention is a schematic diagram of a bed device in a CNC gear hobbing machine for face gears provided by the present invention.

[0025] Among them: 1. Column component; 101. First motor; 102. First guide rail; 103. First screw rod; 104. Column; 2. Support plate assembly; 201. Second guide rail; 202. Second screw rod; 203. Support plate; 204. Second motor; 3. Hob assembly; 301. Bearing seat; 302. Support bearing; 303. First adjustment sleeve; 304. Second adjustment sleeve; 305. Spindle box; 306. Hob cutter; 307. Support shaft; 308. Lock nut; 309. Sliding seat; 4 , workbench components; 401, first face gear blank; 402, second face gear blank; 403, first workbench rotary body; 404, first tooling; 405, workbench; 406, second workbench rotary body; 407, second tooling; 5, bed device; 501, third motor; 502, first motor seat; 503, third screw rod; 504, third guide rail; 505, bed; 506, fourth guide rail; 507, fourth screw rod; 508, second motor seat; 509, fourth motor. 6, online measurement system; 7, automatic tool setting system; 8, No. 1 station; 9, No. 2 station. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] Face gear is a new type of gear structure. The gear pair formed by face gear and cylindrical gear is used for power transmission between intersecting or staggered axes. Its special tooth surface form makes the transmission have the characteristics of large transmission ratio, good interchangeability, excellent torque transmission performance, etc. It can reduce the number of stages of traditional systems, significantly reduce the weight of the transmission system and improve the power density. At the same time, face gear transmission has strong flexibility and adaptability, and can be suitable for transmission occasions with any axis angle. Face gear transmission has a wide range of application value in aviation, aerospace, weapons, automobiles and other industries.

[0032] At present, there are two main processing methods for rough machining of face gear teeth, one is to use a machining center for milling, and the other is to use a face gear turning machine for turning. Therefore, the processing equipment used is a general-purpose machining center and a face gear turning machine. When machining by a machining center, three-axis machining centers and five-axis machining centers are mainly used; among them, when machining by a three-axis machining center, the face gear is mounted on a workbench, and while the milling cutter rotates, the gear teeth are machined by interpolating two linear axes along the radial movement of the face gear and feeding the linear axes along the axial movement of the face gear. The machined tooth surface is repeatedly machined by the milling cutter along the tooth width direction until the entire tooth surface is machined. At this time, the face gear does not move, and another tooth is machined until the entire face gear is machined; when machining by a five-axis machining center, the face gear is mounted on a rotary table, and while the milling cutter rotates, two linear axes are interpolated along the radial movement of the face gear and the linear axes are fed in along the axial movement of the face gear. The gear teeth are processed by linear axis interpolation and linear axis feed along the axial movement of the face gear. The milling cutter repeatedly processes along the width of the face gear until the entire tooth surface is processed. At this time, the workbench rotates the angle of one tooth and processes another tooth until the entire face gear is processed. Due to the small space at the root of the face gear, the tool diameter used in processing is small, and the processing speed and cutting amount cannot be large, otherwise it will cause tool breakage, resulting in low processing efficiency. In addition, the three-axis and five-axis machining centers do not process face gears continuously, so there are interpolation tool errors in processing, low processing accuracy, and discontinuous processing efficiency is generally slow.

[0033] When using a face gear turning machine for processing, there is currently no special equipment in China, only a turning machine modified from a bevel gear milling machine. During turning, the turning cutter spindle intersects with the face gear axis. While the turning cutter and the face gear rotate, the turning cutter moves along the axial direction of the face gear and moves along the radial direction of the face gear to complete the face gear gear processing. When the turning cutter processes the face gear, the tip of the cutter is in point contact with the face gear. The relationship between the gear cutting cutter and the face gear is that the number of teeth on the gear cutting cutter is the number of teeth on the cylindrical gear meshing with the face gear. When the face gear is being cut, the tip of the cutter wears faster because the tip of the cutter is in point contact with the face gear. In order to reduce the wear of the gear cutting cutter, a small feed amount is used for processing, and the processing efficiency is low. Because the number of teeth on the gear cutting cutter used to process the face gear is the same as the number of teeth on the cylindrical gear meshing with the face gear, different gear cutting cutters need to be customized for face gears of different module specifications, which is costly. After gear cutting, wear of the gear cutting cutter is inevitable. After wear, it needs to be repaired edge by edge. Because the entire blade of the gear cutting cutter is the shape of the cylindrical gear teeth meshing with the face gear, a special five-axis grinding machine is required for repair, which is costly and difficult.

[0034] In order to solve the above technical defects, the inventor provides a CNC gear hobbing machine for face gears and a face gear.

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1-Figure 8 As shown, in the first aspect of the embodiment of the present invention, a CNC gear hobbing machine for face gears is provided, including a bed device 5, the bed device 5 includes a first bed assembly and a second bed assembly, the first bed assembly and the second bed assembly are axially vertically arranged between each other; a first guide assembly is slidably connected to the top of the first bed assembly, and a pallet assembly 2 is provided on the side of the first guide assembly close to the second bed assembly, the pallet assembly 2 is used to support the hob frame assembly 3, and enable the hob frame assembly 3 to be displaced along the full length direction of the pallet assembly 2; a An online measuring system 6 and an automatic tool setting system 7, wherein the online measuring system 6 is used to measure the face gear after rough machining, and the automatic tool setting system 7 is connected to the numerical control system to automatically adjust the working angle and position of the tool during face gear machining; a second guide assembly is slidably connected to the top of the second bed assembly, and a No. 1 station 8 and a No. 2 station 9 are installed on the top of the second guide assembly, wherein, during the process of machining the face gear, the No. 1 station 8 is used to machine the face gear, and the No. 2 station 9 is used to replace the face gear to be machined or to disassemble the face gear to be machined; Figure 1 As shown, when performing rough machining before heat treatment of the face gear or fine machining after heat treatment of the face gear, the hob assembly 3 installed on the support plate assembly 2 is used to process the face gear, so that the hob blade is in linear contact with the face gear, thereby increasing the feed amount and improving the machining efficiency; secondly, the No. 1 station 8 and the No. 2 station 9 installed on the second guide assembly realize dual-mode machining operations, where one workbench is used for machining and the other workbench is used to replace a new face gear, thereby improving efficiency.

[0036] like Figure 1-Figure 6As shown, the hob assembly 3 is located above the No. 1 station 8 and the No. 2 station 9, and the hob assembly 3 includes a slide 309, the cross section of the slide 309 is U-shaped, and its open end is slidably matched with the support plate assembly 2; the online measurement system 6 and the automatic tool setting system 7 are installed at the middle and lower part of the top of the slide 309, and the working ends of the online measurement system 6 and the automatic tool setting system 7 are facing the No. 1 station 8 and the No. 2 station 9. The cooperation between the slide 309 and the support plate assembly 2 ensures the stability and accuracy of the hob assembly 3 during the processing, helps to reduce the vibration and error during the processing, and improves the processing quality of the face gear. The bearing seat 301 and the spindle box 305 are installed at the opposite ends of the slide 309, and the end of the spindle box 305 is installed with a support shaft 307, and the outer side of the support shaft 307 is installed with a gear hobbing cutter 306, a first adjustment sleeve 303 and a second adjustment sleeve 304, and the end of the support shaft 307 is installed in the bearing seat 301. The spindle box 305 and the support shaft 307 provide stable support for the gear hobbing cutter 306, which helps to ensure the stability and durability of the gear hobbing cutter 306 during the processing and prolongs the service life of the tool. The bearing seat 301 is installed at one end of the slide 309 to support the support shaft 307 and ensure its correct installation and positioning, which helps to reduce friction and wear during the processing and improve the operating efficiency of the equipment. The online measurement system 6 and the automatic tool setting system 7 are installed on the top of the slide 309, which not only improves the processing efficiency and accuracy, but also reduces the difficulty and cost of operation.

[0037] like Figure 1 and Figure 6 As shown, the gear hobbing cutter 306 is installed between the first adjustment sleeve 303 and the second adjustment sleeve 304. Through the precise matching of the first adjustment sleeve 303 and the second adjustment sleeve 304, the position of the gear hobbing cutter 306 can be precisely adjusted, which helps to ensure the accurate position of the gear hobbing cutter 306 during the processing, thereby improving the processing accuracy. The existence of the first adjustment sleeve 303 and the second adjustment sleeve 304 allows the axial and radial positions of the gear hobbing cutter 306 to be adjusted, so that the hobbing cutter frame assembly 3 can adapt to the processing requirements of face gears of different specifications and shapes, thereby improving the flexibility and adaptability of the equipment. The gear hobbing cutter 306 is clamped between the first adjustment sleeve 303 and the second adjustment sleeve 304, which helps to provide stable support, reduce vibration and tool wear during the processing, and extend the service life of the tool. Secondly, by adjusting the first adjustment sleeve 303 and the second adjustment sleeve 304, the gear hobbing cutter 306 can be easily installed and removed, which simplifies the process of tool replacement and improves the operating efficiency and convenience of the equipment.

[0038] like Figure 7As shown, the No. 1 station 8 and the No. 2 station 9 are arranged at intervals, and the top of the No. 1 station 8 is installed with a first face gear blank 401, and the top of the No. 2 station 9 is installed with a second face gear blank 402. The top of the No. 1 station 8 is installed with a first workbench rotating body 403, and the top of the first workbench rotating body 403 is installed with a first tool 404, and the first face gear blank 401 is installed on the top of the first tool 404. The top of the No. 2 station 9 is installed with a second workbench rotating body 406, and the top of the second workbench rotating body 406 is installed with a second tool 407, and the top of the second tool 407 is installed with a second face gear blank 402.

[0039] The support plate assembly 2 includes a support plate 203, which is slidably connected to the first guide assembly, and the support plate 203 and the first guide assembly are axially perpendicular. A second guide rail 201 and a second motor 204 are installed on the top of the support plate 203. The driving end of the second motor 204 is connected to a second screw rod 202. The end of the second screw rod 202 extends into the second guide rail 201 and cooperates with the hob assembly 3. The first bed assembly and the second bed assembly have the same structure. The first guide assembly includes a column component 1, which is installed on the first bed assembly. A bed assembly includes a bed 505, a third guide rail 504 and a third motor 501 are installed on the top of the bed 505, a third screw rod 503 is installed on the driving end of the third motor 501, and the end of the third screw rod 503 extends into the third guide rail 504 to cooperate with the column component 1; the second bed assembly also includes a bed 505, a fourth motor 509 is installed on the bed 505 of the second bed assembly, the fourth motor 509 is installed on the second motor seat 508, and a fourth screw rod 507 is installed on the driving end of the fourth motor 509. The forward and backward movement of the column component 1 is the X-axis, the left and right movement of the hob assembly 3 is the Y-axis, the up and down movement of the support assembly 2 is the Z-axis, the left and right movement of the worktable component 4 is the V-axis, the rotational movement of the gear hob 306 along its own axis is the B-axis, and the rotation of the two worktable rotating bodies along their own axes is the C-axis.

[0040] Reference Figure 1 , Figure 4-Figure 8The bed 505 is fixed on the ground as the equipment foundation, the first motor seat 502 and the third guide rail 504 are installed at the rear end of the bed 505, the third motor 501 is installed on the first motor seat 502, the third screw rod 503 is connected to the third motor 501, the fourth guide rail 506 and the second motor seat 508 are installed at the front end of the bed 505, the fourth motor 509 is installed on the second motor seat 508, and the fourth screw rod 507 is connected to the fourth motor 509; the column 104 is installed on the third guide rail 504 and moves forward and backward along the third guide rail 504, the first guide rail 102 is installed on the front side of the column 104, the first motor 101 is installed on the top of the column 104, and the first screw rod 103 is connected to the first motor 101; the support plate 203 is installed on the first guide rail 102 and moves up and down along the first guide rail 102, the second guide rail 201 and the second motor 204 are installed on the support plate 203, and the second screw rod 202 is connected to the second motor 204 The slide 309 is mounted on the second guide rail 201 and moves left and right along the second guide rail 201. The bearing seat 301 and the spindle box 305 are respectively mounted on both sides of the slide 309. The gear hobbing cutter 306 is mounted on the support shaft 307. The axial position of the gear hobbing cutter 306 is adjusted by the first adjustment sleeve 303 and the second adjustment sleeve 304. The support bearing 302 is mounted on the bearing seat 301, and the gear hobbing cutter 306 is axially locked by the locking nut 308. The workbench 405 is mounted on the fourth guide rail 506 and moves left and right along the fourth guide rail 506. The first workbench rotating body 403 and the second workbench rotating body 406 are mounted at both ends of the workbench 405. The first face gear blank 401 and the second face gear blank 402 are mounted on the first workbench rotating body 403 and the second workbench rotating body 406 through the first tooling 404 and the second tooling 407. The automatic tool setting system 7 and the on-machine measurement system 6 are mounted on the pallet 203.

[0041] First, install the No. 1 station 8. After the installation is completed, the V axis moves to put the No. 1 station 8 in the processing position, and then install the second face gear blank 402 on the No. 2 station 9; the machine tool starts the automatic tool setting program, and the automatic tool setting probe extends out. Through the movement of the three linear axes X, Y, and Z, the probe is placed at the outer diameter position of the first face gear blank 401, and then the Y axis is moved to find the coordinate position of the outer diameter of the first face gear blank 401 closest to the probe. Through the movement of the three linear axes X, Y, and Z, the probe is placed at the outer diameter position of the first face gear blank 401. 401 top position, move the Z axis to determine the highest point position of the first face gear blank 401, then the tool setting position can be determined; gear hobbing, when the face gear is hobbing, the V axis first moves the No. 1 station to the specified position, and then the V axis is fixed during the entire processing process; the three linear axes X, Y, and Z move to the tool setting position, and the B and C axes rotate at the set speed, and the speed ratio is the number of face gear teeth. At the same time, the X axis processes along the outer diameter and inner diameter of the first face gear blank 401. During the processing, the Y axis moves along the tangent direction of the face gear Participate in linkage processing. When the processing in the tooth width direction is completed, the Z axis moves downward by a set value along the axial direction of the face gear, the X axis processes from the inner diameter direction of the face gear to the outer diameter direction, and the Y axis participates in linkage processing, which is repeated in sequence until the face gear hobbing is processed to the final size and the processing is completed; on-machine measurement: the machine tool starts the on-machine measurement system 6, and the on-machine measurement probe extends out, and moves through the X, Y, Z, and C axes together. When the measuring head is at the tooth top position of the first face gear blank 401, it stops, and then through the linear motion of the Y axis, Z axis, and X axis and the rotational motion of the C axis, the measuring head is allowed to measure the position coordinates of several given points on the two sides of a single tooth groove. The measurement results are compared with the position coordinate values ​​of the theoretical tooth surface, and they are qualified within the error range; workpiece disassembly and assembly, the CNC system controls the V axis to move the No. 1 station 8 to the leftmost side of the bed 505. At this time, the No. 2 station 9 is in the processing position, and the program is started to perform automatic tool setting-gear hobbing-on-machine measurement; during the processing of the No. 2 station 9, the No. 1 station 8 performs face gear disassembly and face gear blank installation. The above process is repeated, and the machine tool is always in the effective processing stage, which improves the utilization rate of the machine tool.

[0042] In a second aspect, a face gear is provided, comprising a face gear body, wherein the face gear body is rough-machined before heat treatment or fine-machined after heat treatment using the CNC gear hobbing machine as described above.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A CNC gear hobbing machine for face gears, characterized in that: include: A bed device (5) comprises a first bed component and a second bed component, wherein the first bed component and the second bed component are axially perpendicular to each other; A first guide assembly is slidably connected to the top of the first bed assembly, and a support plate assembly (2) is provided on a side of the first guide assembly close to the second bed assembly; The hob assembly (3) is arranged on the support plate assembly (2), and the support plate assembly (2) is displaced in the longitudinal direction; An online measurement system (6) and an automatic tool setting system (7) are arranged on the hob assembly (3); The second guide assembly is slidably connected to the top of the second bed assembly, and a first workstation (8) and a second workstation (9) are installed on the top of the second guide assembly.

2. The CNC gear hobbing machine according to claim 1, characterized in that: The hob assembly (3) comprises a slide seat (309), the slide seat (309) cooperates with the support plate assembly (2), and the online measurement system (6) and the automatic tool setting system (7) are installed on the top of the slide seat (309); A bearing seat (301) and a spindle box (305) are installed at opposite ends of the slide seat (309); a support shaft (307) is installed at the end of the spindle box (305); a gear hobbing cutter (306), a first adjustment sleeve (303) and a second adjustment sleeve (304) are installed on the outer side of the support shaft (307); and the end of the support shaft (307) is installed in the bearing seat (301).

3. The CNC gear hobbing machine according to claim 2, characterized in that: The gear hobbing cutter (306) is installed between the first adjustment sleeve (303) and the second adjustment sleeve (304).

4. The CNC gear hobbing machine according to claim 1, characterized in that: The first workstation (8) and the second workstation (9) are spaced apart from each other, and a first face gear blank (401) is installed on the top of the first workstation (8), and a second face gear blank (402) is installed on the top of the second workstation (9).

5. The CNC gear hobbing machine according to claim 4, characterized in that: A first workbench rotating body (403) is installed on the top of the No. 1 workstation (8), a first tooling (404) is installed on the top of the first workbench rotating body (403), and the first face gear blank (401) is installed on the top of the first tooling (404).

6. The CNC gear hobbing machine according to claim 4, characterized in that: A second workbench rotating body (406) is installed on the top of the second workstation (9), a second tooling (407) is installed on the top of the second workbench rotating body (406), and a second face gear blank (402) is installed on the top of the second tooling (407).

7. The CNC gear hobbing machine according to claim 1, characterized in that: The support plate assembly (2) comprises a support plate (203), the support plate (203) is slidably connected to the first guide assembly, and the support plate (203) and the first guide assembly are axially perpendicular; A second guide rail (201) and a second motor (204) are mounted on the top of the support plate (203); a second lead screw (202) is connected to the driving end of the second motor (204); an end of the second lead screw (202) extends into the second guide rail (201) and cooperates with the hob assembly (3).

8. The CNC gear hobbing machine according to claim 1, characterized in that: The first bed assembly and the second bed assembly have the same structure.

9. The CNC gear hobbing machine according to claim 1, characterized in that: The hob assembly (3) is located above the No. 1 workstation (8) and the No. 2 workstation (9).

10. A face gear, comprising a face gear body, characterized in that: The face gear body is rough-machined before heat treatment or fine-machined after heat treatment using the CNC gear hobbing machine described in any one of claims 1 to 9.

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