CN114871510A - Helical gear grinding machine tool - Google Patents

Helical gear grinding machine tool Download PDF

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Publication number
CN114871510A
CN114871510A CN202210807889.9A CN202210807889A CN114871510A CN 114871510 A CN114871510 A CN 114871510A CN 202210807889 A CN202210807889 A CN 202210807889A CN 114871510 A CN114871510 A CN 114871510A
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CN
China
Prior art keywords
driving
deflection
moving
disk
assembly
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Pending
Application number
CN202210807889.9A
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Chinese (zh)
Inventor
郭新民
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Liyang Tengxin Mechanical And Electrical Equipment Co ltd
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Liyang Tengxin Mechanical And Electrical Equipment Co ltd
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Application filed by Liyang Tengxin Mechanical And Electrical Equipment Co ltd filed Critical Liyang Tengxin Mechanical And Electrical Equipment Co ltd
Priority to CN202210807889.9A priority Critical patent/CN114871510A/en
Publication of CN114871510A publication Critical patent/CN114871510A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
    • B23F21/12—Milling tools
    • B23F21/16—Hobs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
    • B23F23/02—Loading, unloading or chucking arrangements for workpieces
    • B23F23/06—Chucking arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Processing (AREA)

Abstract

The invention relates to the technical field of gear grinding machines, in particular to a helical gear grinding machine tool which comprises a machine tool main body, a deflection driving assembly, a concentric driving assembly and a multi-claw clamping assembly, wherein a machine head lifting seat is fixedly arranged on the surface of the machine tool main body, a gear hobbing driving machine head is arranged on the surface of the gear hobbing driving machine head, the deflection driving assembly is fixedly arranged at the output end of the gear hobbing driving machine head, the concentric driving assembly is fixedly arranged at the inner side of the deflection driving assembly, and the multi-claw clamping assembly is movably arranged on the surface of the concentric driving assembly. Through setting up novel concentric clamping structure, utilize deflection drive assembly and concentric drive assembly drive multijaw centre gripping subassembly to carry out work piece ligand centre gripping, only need the motion of actuating lever can realize multijaw centre gripping of centre gripping subassembly through concentric drive assembly, a plurality of gripper jaws are to the synchronous centre gripping of idiosome surface to make the idiosome centre of a circle and the work centre of a circle of gear hobbing drive aircraft nose aim at, realize concentric centre gripping, work efficiency improves and the centre of a circle is proofreaded accurately.

Description

Helical gear grinding machine tool
Technical Field
The invention relates to the technical field of gear grinding machines, in particular to a bevel gear grinding machine tool.
Background
The common spur gears are engaged along the tooth width simultaneously, so that impact vibration noise is generated, and the transmission is not stable. The helical gear transmission is superior to straight gear transmission, and the center distance can be compact for high-speed heavy load. In order to improve the transmission precision and hardness of the gear, the gear needs to be ground. The process of grinding the tooth surfaces of the gear teeth of the cylindrical gear or some gears by using the gear grinding machine is called gear grinding, the gear grinding is mainly used for eliminating the deformation of the gear teeth after heat treatment and improving the gear precision, the precision of the ground gear teeth can reach 6-3 levels (JB179-83) or higher, the gear grinding is indispensable, gear transmission is a transmission link of each mechanical part and is the basis for realizing normal and efficient work of mechanical equipment, the gear grinding not only can obviously improve the labor productivity, but also can effectively ensure the quality of products and reduce the cost, the technical level of technical workers can be improved, the qualification rate of part products is improved, and the development of the mechanical industry is promoted.
In the prior art, the gears in the gear grinding clamp are positioned and installed through the fixed shaft sleeves, if gears with different sizes cannot be accurately positioned, in the process of clamping and positioning the blank, the concentric correction is manually carried out, namely the circle center of the blank is ensured to be positioned on the rotating axis of the machine head, otherwise, the produced gear structure is eccentric and can not be used, various precise instruments are required to be adopted for repeatedly measuring the center in order to ensure the processing precision, the operation is complex, and the efficiency is low, and the problem of inaccurate positioning is caused by loosening of a clamp and other conditions due to the action of rotation and centrifugation after long-time machining of the gear grinding, which causes great interference to the precision of gear grinding and needs to be corrected again, in addition, the existing gear grinding machine tool can only replace or move the tool bit through manpower to meet the requirement of gear grinding without large and small specifications, the applicability is low, and the use experience is poor.
In view of the above, the present invention provides a bevel gear grinding machine tool, which is developed to solve the problems of low concentric clamping efficiency, large error, and low applicability caused by fixed machine tool structure, and aims to achieve the purposes of solving the problems and improving the practical value through the technology.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the technical scheme adopted by the invention is as follows: a bevel gear grinding machine tool, comprising: the multi-jaw clamping machine comprises a machine tool main body, a deflection driving assembly, a concentric driving assembly and a multi-jaw clamping assembly, wherein a machine head lifting seat is fixedly installed on the surface of the machine tool main body, a hobbing driving machine head is arranged on the surface of the machine head lifting seat, the deflection driving assembly is fixedly installed at the output end of the hobbing driving machine head, the concentric driving assembly is fixedly installed on the inner side of the deflection driving assembly, the multi-jaw clamping assembly is movably installed on the surface of the concentric driving assembly, a multi-shaft mechanical arm is arranged on the surface of the machine tool main body, a driving motor is arranged at the tail end of the multi-shaft mechanical arm, and a hobbing cutter head is detachably sleeved at the output end of the driving motor;
the deflection driving assembly comprises a deflection moving ring, a fixed ring seat and a driving rod, the fixed ring seat is fixedly arranged at the output end of the hobbing driving machine head, a plurality of fixed lug plates are arranged on the peripheries of the deflection moving ring and the fixed ring seat, two ends of the driving rod are respectively movably connected with the surface of the fixed lug plate on the periphery of the deflection moving ring and the surface of the fixed lug plate on the periphery of the fixed ring seat, the concentric driving assembly comprises a driving disc and a fixed guide disc which are respectively fixed on the inner sides of the deflection moving ring and the fixed ring seat, a plurality of moving discs are arranged between the driving disc and the fixed guide disc, guide pin grooves and deflection sliding grooves which are the same as the moving discs in number are respectively arranged on the surfaces of the driving disc and the fixed guide disc, the deflection sliding grooves which are sleeved on the inner sides of the guide pin grooves are arranged on the surfaces of the moving discs, and deflection guide bars which are slidably arranged on the inner sides of the deflection sliding grooves are arranged on the other sides of the moving discs; the multi-claw clamping assembly comprises a claw disk seat and a plurality of clamping claws, the bottom ends of the clamping claws are fixedly connected with driving connecting pins fixedly connected with the surface of the moving disk, and the clamping claws are slidably mounted on the surface of the claw disk seat.
The present invention in a preferred example may be further configured to: the multi-axis mechanical arm is a four-axis servo mechanical arm structure, the driving motor is a servo motor structure, the input end electric connection of the multi-axis mechanical arm, the driving motor and the gear hobbing driving machine head is provided with a controller, and the controller is a PLC (programmable logic controller) or a single chip microcomputer.
The present invention in a preferred example may be further configured to: the surface of the hobbing cutter head is provided with a plurality of cutting tooth edges, waste removing gaps are arranged between the cutting tooth edges, and the cutting edges of the cutting tooth edges are in an acute-angle triangular shape.
The present invention in a preferred example may be further configured to: the circle centers of the deflection driving assembly, the concentric driving assembly and the multi-jaw clamping assembly are located on the axis of the hobbing driving machine head, the number of the fixed lug plates is a plurality of and is distributed on the peripheries of the deflection movable ring and the fixed ring seat in a circular array, and the driving rod is of an electric push rod structure.
The present invention in a preferred example may be further configured to: the quantity of gripper jaw equals and the one-to-one correspondence with the quantity of motion disc, the gripper jaw is along the radial arrangement of perpendicular claw dish seat and gear hobbing drive aircraft nose, the surface of claw dish seat is equipped with a plurality of motion guide rails, the tip of gripper jaw is equipped with slidable mounting in the concentric slider on motion guide rail surface, the inboard of motion guide rail is seted up and is used for driving the gliding logical groove of even round pin, and a plurality of motion guide rails are along the radial arrangement of claw dish seat.
The present invention in a preferred example may be further configured to: the number of the moving disks, the guide pin grooves and the deflection sliding grooves is six, the moving disks are distributed on the inner sides of the driving disk and the fixed guide disk in a circular array, and two sides of the moving disks are respectively in sliding abutting joint with the surfaces of the driving disk and the fixed guide disk.
The present invention in a preferred example may be further configured to: the driving disc and the fixed guide disc are of circular ring sheet structures, the guide pin groove is of an arc structure, the deflection sliding groove is of a linear groove structure, and the deflection sliding groove is arranged along the tangential direction of the inner ring of the fixed guide disc.
The present invention in a preferred example may be further configured to: the two ends of the driving rod are provided with lantern rings, the surface of the fixed lug plate is fixedly provided with a shaft pin, and the two ends of the driving rod are rotatably sleeved on the outer side of the shaft pin.
The beneficial effects obtained by the invention are as follows:
1. according to the invention, by arranging the novel concentric clamping structure, the deflection driving assembly and the concentric driving assembly are utilized to drive the multi-jaw clamping assembly to clamp the workpiece ligand, one-key clamping of the multi-jaw clamping assembly can be realized through the concentric driving assembly only by the movement of the driving rod, the plurality of clamping jaws synchronously clamp the surface of the blank, the center of the blank is aligned with the working center of a hobbing driving machine head, concentric clamping is realized, the working efficiency is improved, the center of the circle is accurately calibrated, and manual repeated calibration operation is not needed.
2. According to the invention, by arranging the deflection type driving structure, the concentric driving assembly and the multi-claw clamping assembly are driven to clamp the blank body by utilizing the relative deflection between the deflection rotating ring and the fixed ring seat, certain rotation kinetic energy of the workpiece blank body, the multi-claw clamping assembly and the deflection rotating ring is added by the rotation motion of the gear hobbing driving machine head in the working process, and the workpiece blank body, the multi-claw clamping assembly and the deflection rotating ring generate inertia potential energy under the rotation kinetic energy, so that the clamping force of the workpiece blank body in high-speed rotation is in direct proportion to the rotation speed, the clamping effect on the workpiece blank body is improved, and the clamping work is more stable.
3. According to the invention, by arranging the integrated automatic numerical control gear grinding machine tool structure, the multi-shaft mechanical arm and the gear hobbing driving machine head are utilized to drive the gear hobbing tool bit and the blank workpiece to perform relative rotation motion, the grinding machining of the tooth socket on the surface of the blank is performed under the relative motion of the gear hobbing tool bit and the blank, the multi-shaft motion structure of the multi-shaft mechanical arm can set the free angle of the gear hobbing tool bit according to a program so as to perform the bevel gear machining of different specifications and sizes, and the practicability and the automation degree are high.
Drawings
FIG. 1 is a schematic overall structure diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of a multi-axis robotic arm and yaw drive assembly in accordance with one embodiment of the present invention;
FIG. 3 is a schematic view of a hobbing cutter head structure according to an embodiment of the invention;
FIG. 4 is a schematic view of a yaw drive assembly and a multi-jaw clamp assembly mounting arrangement according to one embodiment of the present invention;
FIG. 5 is a schematic view of a concentric drive assembly mounting arrangement according to one embodiment of the present invention;
FIG. 6 is a schematic view of a multi-jaw clamp assembly mounting arrangement according to an embodiment of the present invention;
FIG. 7 is an exploded view of a concentric drive assembly according to one embodiment of the present invention.
Reference numerals:
100. a machine tool main body; 110. a machine head lifting seat; 120. a gear hobbing driving machine head; 130. a multi-axis robotic arm; 140. a hobbing cutter head;
200. a yaw drive assembly; 210. deflecting the rotating ring; 220. a fixed ring seat; 230. a lug fixing plate; 240. a drive rod;
300. a concentric drive assembly; 310. a driving disk; 320. a guide plate; 330. moving the disc; 311. a guide pin slot; 321. a deflection chute; 331. a motion shaft pin; 332. deflecting the guide bar;
400. a multi-jaw clamping assembly; 410. a claw disk seat; 420. a gripper jaw; 411. a moving guide rail; 421. a concentric slider; 422. the connecting pin is driven.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
It is to be understood that these descriptions are only exemplary, and are not intended to limit the scope of the present invention.
The following describes a bevel gear grinding machine according to some embodiments of the present invention with reference to the accompanying drawings.
Referring to fig. 1 to 7, the present invention provides a bevel gear grinding machine tool, including: the multi-jaw mechanical hand comprises a machine tool main body 100, a deflection driving assembly 200, a concentric driving assembly 300 and a multi-jaw clamping assembly 400, wherein a machine head lifting seat 110 is fixedly installed on the surface of the machine tool main body 100, a hobbing driving machine head 120 is arranged on the surface of the machine head lifting seat 110, the deflection driving assembly 200 is fixedly installed at the output end of the hobbing driving machine head 120, the concentric driving assembly 300 is fixedly installed on the inner side of the deflection driving assembly 200, the multi-jaw clamping assembly 400 is movably installed on the surface of the concentric driving assembly 300, a multi-shaft mechanical arm 130 is arranged on the surface of the machine tool main body 100, a driving motor is arranged at the tail end of the multi-shaft mechanical arm 130, and a hobbing tool bit 140 is detachably sleeved at the output end of the driving motor; the yaw drive assembly 200 includes a yaw ring 210, the fixed ring seat 220 and the driving rod 240, the fixed ring seat 220 is fixedly installed at the output end of the gear hobbing driving handpiece 120, the peripheries of the rotating deflection ring 210 and the fixed ring seat 220 are both provided with a plurality of fixed lug plates 230, two ends of the driving rod 240 are respectively movably connected with the surface of the fixed lug plate 230 at the periphery of the rotating deflection ring 210 and the surface of the fixed lug plate 230 at the periphery of the fixed ring seat 220, the concentric driving assembly 300 comprises a driving disc 310 and a fixed guide disc 320 which are respectively fixed at the inner sides of the rotating deflection ring 210 and the fixed ring seat 220, a plurality of moving discs 330 are arranged between the driving disc 310 and the fixed guide disc 320, the surfaces of the driving disc 310 and the fixed guide disc 320 are respectively provided with guide pin grooves 311 and deflection sliding grooves 321, the surfaces of the moving discs 330 are provided with deflection sliding chutes 321 which are sleeved at the inner sides of the guide pin grooves 311, and the other sides of the moving discs 330 are provided with deflection guide bars 332 which are slidably installed at the inner sides of the deflection sliding chutes 321; the multi-jaw clamping assembly 400 includes a jaw plate holder 410 and a plurality of clamping jaws 420, wherein a driving connecting pin 422 fixedly connected with the surface of the moving plate 330 is fixedly connected to the bottom end of the clamping jaws 420, and the clamping jaws 420 are slidably mounted on the surface of the jaw plate holder 410.
In this embodiment, the multi-axis robot arm 130 is a four-axis servo robot arm structure, the driving motor is a servo motor structure, and the input ends of the multi-axis robot arm 130, the driving motor and the gear hobbing drive head 120 are electrically connected to a controller, which is a PLC controller or a single chip microcomputer.
Specifically, the multi-axis motion structure of the multi-axis mechanical arm 130 can set the free angle of the hobbing cutter head 140 according to a program to perform bevel gear machining of different specifications and sizes, and perform grinding machining of the tooth socket on the surface of the blank under the relative motion of the hobbing cutter head 140 and the blank, so that the practicability is high and the degree of automation is high.
In this embodiment, the surface of the hobbing cutter head 140 is provided with a plurality of cutting teeth, clearance for removing waste is provided between the cutting teeth, and the cutting edge of the cutting teeth is in a triangular shape with an acute angle.
Specifically, the acute cutting edge of the acute-angle triangular cutting tooth blade is used for cutting and feeding in the rotating motion, and the grinding clearance cutting treatment is carried out through the triangular cutting tooth blade, so that the single chip quantity is effectively improved, and the grinding machining efficiency is improved.
In this embodiment, the centers of the deflection driving assembly 200, the concentric driving assembly 300 and the multi-jaw clamping assembly 400 are located on the axis of the hobbing machine head 120, the number of the fixed ear plates 230 is several and distributed on the peripheries of the deflection moving ring 210 and the fixed ring seat 220 in a circular array, and the fixed ear plates 230 are of an electric push rod structure.
Specifically, the concentric arrangement of the deflection driving assembly 200, the concentric driving assembly 300, the multi-jaw clamping assembly 400 and the hobbing drive head 120 is utilized to facilitate the concentric alignment of the workpiece with the hobbing drive head 120 in the clamping process of the multi-jaw clamping assembly 400, the driving of the plurality of lug plates 230 carries out the relative deflection of the deflection moving ring 210 and the lug plates 230 to realize the one-key clamping of the multi-jaw clamping assembly 400, the plurality of clamping jaws 420 synchronously clamp the surface of the blank, and the center of the circle of the blank is aligned with the working center of the hobbing drive head 120 to realize the concentric alignment and the clamping.
In this embodiment, the number of the clamping claws 420 is equal to and corresponds to the number of the moving disks 330 one by one, the clamping claws 420 are arranged along the radial direction of the vertical claw disk seat 410 and the hobbing drive head 120, the surface of the claw disk seat 410 is provided with a plurality of moving guide rails 411, the end of the clamping claws 420 is provided with a concentric slider 421 slidably mounted on the surface of the moving guide rails 411, the inner side of the moving guide rails 411 is provided with a through groove for driving the connecting pin 422 to slide, and the plurality of moving guide rails 411 are arranged along the radial direction of the claw disk seat 410.
Specifically, the relative sliding of the moving guide 411 and the concentric slide 421 is used to guide the movement of the clamping jaws 420, so that the clamping jaws 420 slide on the surface of the jaw plate seat 410 in the radial direction relative to the jaw plate seat 410 to clamp the workpiece, the workpiece position is adjusted by the synchronous movement of the plurality of clamping jaws 420, the periphery of the workpiece is synchronously clamped, and the center of the circle is calibrated.
In this embodiment, the number of the moving disk 330, the guide pin slot 311 and the deflection sliding slot 321 is six, and each moving disk 330 is distributed in a circular array on the inner sides of the driving disk 310 and the fixed guide disk 320, and both sides of the moving disk 330 are respectively in sliding contact with the surfaces of the driving disk 310 and the fixed guide disk 320.
Further, the driving disk 310 and the fixed guide disk 320 are of circular ring sheet structures, the guide pin slot 311 is of an arc structure, the deflection sliding slot 321 is of a linear slot structure, and the deflection sliding slot 321 is arranged along the inner ring tangential direction of the fixed guide disk 320.
Specifically, under the deflecting action of the driving disk 310 and the fixed guide disk 320, the driving disk 310 drives the moving shaft pin 331 to move through the surface guide pin slot 311, the moving disk 330 is drawn by the moving shaft pin 331 to move, the surface deflecting guide strip 332 slides inside the deflecting sliding slot 321, so that under the action of the moving shaft pin 331 and the deflecting guide strip 332, the moving disk 330 deflects around the moving shaft pin 331 in motion, and the deflection distance of one end of the moving disk 330 is gradually reduced from the center of the circle, thereby realizing clamping driving.
In this embodiment, the driving rod 240 has two ends provided with collars, the fixed lug plate 230 has a surface fixedly mounted with a shaft pin, and the two ends of the driving rod 240 are rotatably sleeved on the outer side of the shaft pin.
Specifically, under the driving action of the driving rod 240, the deflecting movable ring 210 deflects on the surface of the fixed ring seat 220 along the extending direction of the driving rod 240, and the driving rod 240 follows the deflecting motion of the deflecting movable ring 210 and the fixed ring seat 220 through the rotation of the collar and the shaft pin, so that the telescopic action of the driving rod 240 is converted into the relative deflection of the deflecting movable ring 210 and the fixed ring seat 220.
The working principle and the using process of the invention are as follows:
when the gear grinding machine is used, firstly, a cylindrical blank body structure with proper size and a gear hobbing cutter head 140 with proper specification are selected according to the specification of a gear, the gear hobbing cutter head 140 is fixed at the execution tail end of the multi-axis mechanical arm 130, the gear grinding machining specification is input from the control end, the position and the inclination angle of the gear hobbing cutter head 140 are adjusted according to the multi-axis drive of the multi-axis mechanical arm 130 controlled by a program, the advance control of the multi-axis mechanical arm 130 is carried out by the control end in the machining process, the cylindrical blank body is inserted into the end of the gear hobbing drive machine head 120, and the drive rod 240 is controlled by the controller to work;
under the driving action of the driving rod 240, the deflecting moving ring 210 deflects on the surface of the fixed ring seat 220 along the extending direction of the driving rod 240, so that the driving disk 310 and the fixed guide disk 320 relatively deflect, under the deflecting action of the driving disk 310 and the fixed guide disk 320, the driving disk 310 drives the moving shaft pin 331 to move through the surface guide pin slot 311, the moving disk 330 is drawn by the moving shaft pin 331 to move, the surface deflecting guide strip 332 slides inside the deflecting sliding slot 321, so that under the action of the moving shaft pin 331 and the deflecting guide strip 332, the moving disk 330 deflects by taking the moving shaft pin 331 in motion as the center of a circle, the deflection distance of one end of the moving disk 330 gradually decreases, the driving connecting pin 422 is driven to synchronously move, under the driving of the driving connecting pin 422, the disk seat 410 deflects on the inside of the driving disk 310, and the driving connecting pin 422 drives the concentric slide block 421 and the clamping pawl 420 to deflect towards the center of a circle under the guiding action of the moving guide rail 411, the outer side of the blank is synchronously clamped by the clamping jaws 420, so that the center of the circle of the blank and the centers of the deflection driving assembly 200, the concentric driving assembly 300 and the hobbing driving head 120 are positioned on the same axis to finish clamping and concentric calibration, the hobbing cutter head 140 and the blank workpiece are driven by the multi-axis mechanical arm 130 and the hobbing driving head 120 to perform relative rotary motion, grinding of tooth grooves on the surface of the blank is performed under the relative movement of the hobbing cutter head 140 and the blank, the workpiece blank, the multi-jaw holding assembly 400 and the deflecting rotating ring 210 generate a certain rotational kinetic energy in the rotational motion of the gear hobbing driving head 120, the rotational kinetic energy causes the workpiece blank, the multi-jaw clamping assembly 400 and the deflection rotating ring 210 to generate inertial potential energy, the clamping force applied to the workpiece blank during high-speed rotation is in direct proportion to the rotation rate, the clamping effect on the workpiece blank is improved, and reduction of the clamping effect and deviation of the circle center caused by movement centrifugation are avoided.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims (8)

1. The utility model provides a helical gear grinding machine tool which characterized in that includes: the multi-jaw mechanical arm comprises a machine tool main body (100), a deflection driving assembly (200), a concentric driving assembly (300) and a multi-jaw clamping assembly (400), wherein a machine head lifting seat (110) is fixedly installed on the surface of the machine tool main body (100), a hobbing driving machine head (120) is arranged on the surface of the machine head lifting seat (110), the deflection driving assembly (200) is fixedly installed at the output end of the hobbing driving machine head (120), the concentric driving assembly (300) is fixedly installed on the inner side of the deflection driving assembly (200), the multi-jaw clamping assembly (400) is movably installed on the surface of the concentric driving assembly (300), a multi-shaft mechanical arm (130) is arranged on the surface of the machine tool main body (100), a driving motor is arranged at the tail end of the multi-shaft mechanical arm (130), and a hobbing cutter head (140) is detachably sleeved at the output end of the driving motor;
the deflection driving assembly (200) comprises a deflection moving ring (210), a fixed ring seat (220) and a driving rod (240), the fixed ring seat (220) is fixedly arranged at the output end of the hobbing driving machine head (120), a plurality of fixed lug plates (230) are arranged on the peripheries of the deflection moving ring (210) and the fixed ring seat (220), two ends of the driving rod (240) are respectively movably connected with the surfaces of the fixed lug plates (230) on the periphery of the deflection moving ring (210) and the fixed lug plates (230) on the periphery of the fixed ring seat (220), the concentric driving assembly (300) comprises a driving disc (310) and a fixed guide disc (320) which are respectively fixed on the inner sides of the deflection moving ring (210) and the fixed ring seat (220), a plurality of moving discs (330) are arranged between the driving disc (310) and the fixed guide disc (320), and guide pins (311) and deflection sliding grooves (321) which are the same as the moving discs (330) in number are respectively arranged on the surfaces of the driving disc (310) and the fixed guide disc (320), the surface of the moving disk (330) is provided with a deflection sliding groove (321) sleeved on the inner side of the guide pin groove (311), and the other side of the moving disk (330) is provided with a deflection guide bar (332) slidably mounted on the inner side of the deflection sliding groove (321);
the multi-claw clamping assembly (400) comprises a claw disk seat (410) and a plurality of clamping claws (420), wherein the bottom ends of the clamping claws (420) are fixedly connected with driving connecting pins (422) fixedly connected with the surface of a moving disk (330), and the clamping claws (420) are slidably mounted on the surface of the claw disk seat (410).
2. The bevel gear grinding machine tool according to claim 1, wherein the multi-axis robot (130) is a four-axis servo robot structure, the driving motor is a servo motor structure, and the input ends of the multi-axis robot (130), the driving motor and the gear hobbing driving head (120) are electrically connected with a controller, wherein the controller is a PLC (programmable logic controller) or a single chip microcomputer.
3. The bevel gear grinding machine tool according to claim 1, characterized in that the surface of said hobbing cutter head (140) is provided with a plurality of cutting teeth edges, between said cutting teeth edges are provided with clearance for removing waste, and the cutting edges of said cutting teeth edges are in the shape of acute triangle.
4. The bevel gear grinding machine tool according to claim 1, wherein the centers of the deflection driving assembly (200), the concentric driving assembly (300) and the multi-jaw clamping assembly (400) are located on the axis of the hobbing driving head (120), the number of the fixed lug plates (230) is several and distributed on the peripheries of the deflection moving ring (210) and the fixed ring seat (220) in a circular array, and the driving rod (240) is of an electric push rod structure.
5. The bevel gear grinding machine tool according to claim 1, characterized in that the number of the clamping jaws (420) is equal to and corresponds to the number of the moving disks (330), the clamping jaws (420) are arranged along the radial direction of the vertical jaw disk seat (410) and the hobbing drive head (120), the surface of the jaw disk seat (410) is provided with a plurality of moving guide rails (411), the end of the clamping jaw (420) is provided with a concentric slide block (421) which is slidably mounted on the surface of the moving guide rails (411), the inner side of the moving guide rails (411) is provided with a through groove for driving the connecting pin (422) to slide, and the plurality of moving guide rails (411) are arranged along the radial direction of the jaw disk seat (410).
6. The bevel gear grinding machine tool according to claim 1, characterized in that the number of the moving disks (330), the guide pin grooves (311) and the deflection sliding grooves (321) is six, and each moving disk (330) is distributed on the inner sides of the driving disk (310) and the fixed guide disk (320) in a circular array, and two sides of the moving disk (330) are respectively in sliding contact with the surfaces of the driving disk (310) and the fixed guide disk (320).
7. The bevel gear grinding machine according to claim 1, wherein said driving disk (310) and said fixed guide disk (320) are of circular sheet structure, said guide pin slot (311) is of arc structure, said deflecting sliding slot (321) is of linear slot structure, and said deflecting sliding slot (321) is arranged along the tangential direction of the inner ring of the fixed guide disk (320).
8. The bevel gear grinding machine tool according to claim 1, characterized in that two ends of the driving rod (240) are provided with a sleeve ring, a shaft pin is fixedly installed on the surface of the fixed lug plate (230), and two rotation ends of the driving rod (240) are sleeved on the outer side of the shaft pin.
CN202210807889.9A 2022-07-11 2022-07-11 Helical gear grinding machine tool Pending CN114871510A (en)

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CN117047200B (en) * 2023-10-13 2023-12-22 江苏里华机械股份有限公司 Worm gear tooth slot machining lathe

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Application publication date: 20220809