CN116100088A - Multifunctional high-precision numerical control gear grinding machine tool - Google Patents

Multifunctional high-precision numerical control gear grinding machine tool Download PDF

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Publication number
CN116100088A
CN116100088A CN202211593575.XA CN202211593575A CN116100088A CN 116100088 A CN116100088 A CN 116100088A CN 202211593575 A CN202211593575 A CN 202211593575A CN 116100088 A CN116100088 A CN 116100088A
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CN
China
Prior art keywords
axis module
axis
machine tool
grinding wheel
gear
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Pending
Application number
CN202211593575.XA
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Chinese (zh)
Inventor
王学庚
王芋
王若来
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Fuqing Yongyulai Gear Co ltd
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Fuqing Yongyulai Gear Co ltd
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Priority to CN202211593575.XA priority Critical patent/CN116100088A/en
Publication of CN116100088A publication Critical patent/CN116100088A/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
    • B23F19/02—Lapping gear teeth
    • 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
    • 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
    • B23F23/08—Index mechanisms
    • 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
    • B23F23/10—Arrangements for compensating irregularities in drives or indexing mechanisms
    • 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
    • B23F23/12—Other devices, e.g. tool holders; Checking devices for controlling workpieces in machines for manufacturing gear teeth
    • B23F23/1225—Arrangements of abrasive wheel dressing devices on gear-cutting machines
    • 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
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • 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
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • B23Q5/56—Preventing backlash
    • 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)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The invention relates to a multifunctional high-precision numerical control gear grinding machine tool, in particular to the field of gear forming gear grinding machining equipment, which comprises four parts of a machine tool body, a workpiece moving mechanism, a grinding wheel moving mechanism and an auxiliary machining mechanism, wherein the four parts comprise an X-axis module, a Y-axis module, a Z-axis module, an A-axis module and a B-axis module, the X-axis module, the Y-axis module and the Z-axis module are linear movement modules, the A-axis module and the B-axis module are rotary movement modules, the grinding wheel moving mechanism comprises a Y-axis module, a Z-axis module and a B-axis module, and the auxiliary machining mechanism comprises a grinding wheel trimming part and a tailstock clamping part. According to the five-axis linkage motion scheme, the workpiece is ground by the grinding wheel, so that efficient and high-precision gear grinding processing of precision transmission parts such as a straight gear, a bevel gear, a worm gear and a worm can be met.

Description

Multifunctional high-precision numerical control gear grinding machine tool
Technical Field
The invention relates to the field of gear forming and gear grinding processing equipment, in particular to a multifunctional high-precision numerical control gear grinding machine tool.
Background
Along with transformation and upgrading of mechanical equipment, higher requirements are put on the quality and precision of transmission parts commonly seen in mechanical equipment such as gears, worm gears and worms, and high-precision grinding is a necessary finishing means for obtaining the precision transmission parts. Most of the existing numerical control gear grinding machine tools adopt a generating grinding method, only one type of gear grinding processing can be completed, and the economic and efficient manufacturing requirements of various gear parts cannot be met. Currently, efficient, high-precision and multifunctional complete machining is a main development trend of a numerical control machine tool, and the multifunctional high-precision numerical control gear grinding machine tool can effectively improve tooth surface grinding efficiency and contour precision by adopting a forming grinding method, and is suitable for grinding various tooth surfaces by adopting a multi-axis motion scheme through multi-axis linkage. Meanwhile, the technology of designing and developing a corresponding shaping grinding wheel dressing device, grinding wheel passivation inspection, automatic positioning, error compensation and the like realizes the automation and intellectualization level of the numerical control shaping grinding wheel gear grinding machine, is a multifunctional, efficient and high-precision tooth surface grinding machine tool, can realize the efficient and high-precision gear grinding machining of the tooth surfaces of precision parts such as a straight gear, a helical gear, a worm, a helical rotor, a screw and the like, meets the demands of equipment manufacturing enterprises, and has wide application prospects.
Disclosure of Invention
(1) Technical problem to be solved
Aiming at the problems in the prior art, the invention provides a multifunctional high-precision numerical control gear grinding machine tool which can be reasonably manufactured and used in order to make up the defects in the prior art.
(2) Technical proposal
Aiming at the conditions that the current numerical control gear grinding machine tool is single in machining type, low in machining precision stability and low in machine tool universality, in order to solve the problems, the invention provides a multifunctional high-precision numerical control gear grinding machine tool, which adopts the overall layout scheme of a T-shaped integral machine tool body and five-axis motion, and comprises a T-shaped machine tool body, a workpiece motion mechanism, a grinding wheel motion mechanism and an auxiliary machining mechanism, wherein the workpiece motion mechanism and the grinding wheel motion mechanism comprise an X-axis module, a Y-axis module, a Z-axis module, an A-axis module and a B-axis module, the X-axis module, the Y-axis module and the Z-axis module are linear motion modules which are respectively composed of a motor, a precise planetary gear reducer, a ball screw nut pair, a linear motion pair, a bearing support device and the like which are arranged on the shaft, the A-axis module and the B-axis module are rotary motion modules, and the A-axis module comprises a motor, a synchronous pulley transmission device, a workpiece spindle, a bearing support device, a three-jaw chuck and a movable tailstock, and a shaft assembly which comprise a double-worm gear transmission device, a worm gear transmission device and a shaft device which are arranged on the shaft; the workpiece movement mechanism comprises an X-axis module and an A-axis module which are used for driving a workpiece to move; the grinding wheel movement mechanism comprises a Y-axis module, a Z-axis module and a B-axis module which are used for driving a grinding wheel spindle to move; the auxiliary processing mechanism comprises a grinding wheel dresser part and a tailstock clamping mechanism part, and the grinding wheel is utilized to grind the workpiece through a five-axis linkage movement scheme, so that the efficient and high-precision gear grinding processing of precision transmission parts such as a straight gear, a bevel gear, a worm gear and a worm can be satisfied.
Further, the workpiece movement mechanism comprises an X-axis module and an A-axis module. The X-axis module is supported on the machine tool body, and the A-axis module is supported on the X-axis module; the A-axis module drives the workpiece to rotate around the X-axis module, and the linear motion module of the X-axis module drives the workpiece and the A-axis module to move in the X-axis direction. The X-axis module is linked with the A-axis module to realize the indexing function of the gear workpiece so as to adapt to the grinding processing of the workpiece with a spiral angle and a lead angle.
Further, the X-axis module comprises an X-axis motor, a precise planetary gear reducer, a plum blossom shaft coupling, a ball screw, a linear motion module, an X-axis fixing part and a workbench, wherein the input end of the precise planetary gear reducer is fixedly connected with the output end of the X-axis motor through a screw, the output end of the precise planetary gear reducer is fixedly connected with the plum blossom shaft coupling through a screw, two ends of the ball screw are supported through bearings, oil is blocked by a felt ring in a sealing mode, and the ball screw is locked by double nuts.
Further, the X-axis linear motion module comprises a matched ball screw, a ball screw nut pair and a pair of workbench linear guide rails symmetrically distributed about the ball screw, wherein the ball screw is connected with the precise planetary gear reducer through a coupler, the workbench linear guide rails are installed in parallel with the ball screw, and the workbench is fixedly connected with the ball screw nut pair through a cylindrical pin and an inner hexagon nut.
Further, the X-axis fixing part comprises a motor seat, a bearing seat and an end cover. The motor cabinet and the bearing seat are two motor cabinets which are fixed on a machine tool body through socket head cap screws and pins, a plurality of bearings are installed in the motor cabinet to fixedly support the ball screw, and the motor cabinets are sealed through end covers and felt rings. The ball screw is characterized in that the bearings are respectively a first deep groove ball bearing and a first thrust ball bearing which are arranged at the left end and the right end of the ball screw, the left side of the first deep groove ball bearing at the left end is fixed at the left end of the ball screw through a sleeve, the ball screw is pre-tightened and loose-proof by using double nuts, the right side of the first deep groove ball bearing is adjacently arranged with the first thrust ball bearing through a sleeve, the right side of the first thrust ball bearing is fixed through a shaft shoulder of the ball screw, an end cover and a felt ring are arranged on the shaft shoulder to seal, and the bearings inside the bearing seat at the right end of the ball screw are identical to the bearings inside the motor seat at the left end in installation mode and support the ball screw together. The plum blossom coupler and the motor base are fastened on a lathe bed through cylindrical pins and screws. The bearing pedestal supports the right end of the ball screw and is fixedly connected to the lathe bed through a cylindrical pin and an inner hexagonal nut.
Further, the A-axis module comprises an A-axis motor, a synchronous pulley transmission device, a workpiece spindle and a spindle box body, wherein the A-axis bearing support part and the three-jaw chuck are used for driving the synchronous pulley to rotate, the A-axis motor drives the synchronous pulley transmission device to rotate, and then the workpiece spindle is driven to rotate, and finally the three-jaw chuck fixedly connected to the workpiece spindle is driven to rotate, so that the indexing function of the workpiece is realized.
Further, the workpiece spindle is connected with a large synchronous pulley of the synchronous pulley transmission device, a small synchronous pulley of the synchronous pulley transmission device is connected with the A-axis motor, so that the workpiece spindle is decelerated, the workpiece spindle is supported by the A-axis bearing supporting part, the felt ring seals oil blocking, the felt ring is fixedly arranged on the workpiece spindle box body through an end cover, a hexagon socket head cap screw, a double nut and the like, and a center distance adjusting groove-shaped hole is formed in an A-axis motor seat and used for adjusting the center distance of the large synchronous pulley and the small synchronous pulley. The bearing support part of the A-axis bearing comprises a pair of double-row cylindrical roller bearings, an ultra-precise bidirectional angular contact ball bearing, a sleeve and double nuts, wherein the pair of double-row cylindrical roller bearings are respectively arranged on two sides of the A-axis and a workpiece spindle box body and are tightly arranged with an end cover, the sleeve is fixedly arranged at the left end of the right-side double-row cylindrical roller bearing, the ultra-precise bidirectional angular contact ball bearing is arranged at the left end of the sleeve, pre-tightening and anti-loosening are realized through the double nuts at the left end of the sleeve, and the left-side double-row cylindrical roller bearing is fixed through the end cover and the shaft shoulder.
Further, the left end and the right end of the large synchronous pulley of the synchronous pulley transmission device are fixed at the input end of the workpiece spindle through two sleeves and round nuts, the small synchronous pulley is provided with a synchronous pulley tensioner, and the synchronous pulley tensioner consists of a longitudinal sliding plate and a fixed base.
Furthermore, the three-jaw chuck is fixedly connected with the connecting flange through the hexagon socket head cap screw, and the connecting flange is fixedly connected with the workpiece spindle through the hexagon socket head cap screw and the pin sleeve.
Further, the grinding wheel movement mechanism comprises a Y-axis module, a Z-axis module and a B-axis module, wherein the Y-axis module is fixed on the machine tool body, the Y-axis module is perpendicular to the X-axis module, an upright post is arranged upwards on the Y-axis module, the Z-axis module is supported on the upright post, the B-axis module is supported on the Z-axis module, and the movement of the Y-axis module, the Z-axis module and the B-axis module forms the movement of the grinding wheel.
Further, the transmission and installation modes of the Y-axis module and the Z-axis module are the same as those of the X-axis module.
Further, the B-axis module comprises an upper rotating shaft workbench motor, a lower rotating shaft workbench motor, a transmission gap eliminating mechanism, a grinding wheel workbench box body, a motor fixing cover, a grinding wheel cutter disc mechanism, a rotary table bearing, an inner hexagonal cylindrical head screw, a large gear and a small gear, wherein the servo motor is fixedly connected with the motor fixing cover through a cylindrical screw, a motor shaft is fixedly connected with the small gear through a key and a pin, the small gear is meshed with the large gear, and the large gear is fixedly connected with a worm input end in the transmission gap eliminating mechanism. The turntable bearing is arranged on the workbench box body through an inner hexagonal cylindrical head screw, and the left shaft end of the turntable is assembled with the bearing and the inner circle of the anti-backlash gear in a matching way and is fixed on the anti-backlash gear through an inner hexagonal head screw.
Further, the transmission anti-backlash mechanism is composed of a double worm and an anti-backlash gear, the double worm is meshed with the anti-backlash gear at the upper end and the lower end of the anti-backlash gear respectively, one-way thrust is adopted at two ends of the worm, bearing rotating schemes with two sides fixed at one end are adopted, bearing play can be adjusted by adjusting a round nut at one end of the thrust end to achieve pre-tightening, the anti-backlash gear is fixedly connected with the worm, the pinion is fixedly connected with a servo motor shaft, and a transmission reverse gap is eliminated by two sets of worms which are symmetrical with respect to the center of the worm wheel.
Further, the grinding wheel cutterhead mechanism comprises a grinding wheel, a grinding electric spindle, a flange, an electric spindle fixing seat, an inner hexagonal cylindrical head screw, an inner threaded cylindrical pin and a BT30 cutter handle. The grinding wheel is fixed on the tool handle through a BT30 tool handle shoulder, a flange and a double nut, the grinding electric spindle is fixedly connected with the BT30 tool handle and is fixed on the electric spindle fixing seat through an inner hexagonal cylindrical head screw, and the electric spindle fixing seat is fixed at the right end of the rotary table through an inner threaded cylindrical pin and an inner hexagonal cylindrical head nut.
Further, the grinding wheel dressing component comprises a grinding wheel dresser, an inner hexagonal cylindrical head screw and an inner threaded cylindrical pin, wherein the grinding wheel dresser is fixed on the workpiece spindle box body through the inner hexagonal cylindrical head screw and the inner threaded cylindrical pin and is arranged on the left side of the three-jaw clamping plate.
Further, the tailstock clamping component comprises a thimble, a tailstock rotating shaft, a tailstock driving servo motor, a gear, a rack and a tailstock seat body, the thimble is fixedly connected with the tailstock rotating shaft, the tailstock rotating shaft is sequentially provided with a double-row cylindrical roller bearing, a second deep groove ball bearing, a spring and a second thrust ball bearing in an axial fixing mode from the thimble to the tail end by using an end cover, a sleeve, a shaft shoulder, a double-nut and the like, the left side of the thimble is only installed by the shaft shoulder of the thimble, the right side of the thimble is provided with the second deep groove ball bearing, the right side of the second deep groove ball bearing is pre-tightened and loose by using the double-nut, the right end cover of the second thrust ball bearing is tightly installed and fixed, the left side of the second thrust ball bearing is tightly connected with the spring, the double-row cylindrical roller bearing is fixed by abutting against the shaft shoulder, and the spring plays a role of buffering. The tail frame driving servo motor is fixed on the tail frame seat body through a screw, the gear is fixed on a tail frame driving servo motor shaft through a pin and a set screw, the rack is arranged on a machine tool body boss, and the gear rack mechanism is driven by the tail frame driving servo motor to drive the tail frame to move so as to realize the buffer jacking of the ejector pin to a workpiece. Therefore, efficient and high-precision gear grinding processing of various gear precision transmission parts such as straight gears, helical gears, worm gears and worms is realized.
(3) Advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
1. according to the multifunctional high-precision numerical control gear grinding machine tool, the workpiece is ground by utilizing the grinding wheel through the five-axis linkage movement scheme, so that grinding of various gear precision transmission parts can be realized.
2. The X-axis module and the A-axis module of the machine tool have a linkage function so as to realize the indexing function of gear workpieces and the grinding processing of workpieces with helix angles and lead angles.
3. The transmission anti-backlash mechanism of the machine tool comprises a double worm, a worm wheel and an anti-backlash gear, wherein the anti-backlash gear realizes that one gear is close to a tooth slot of a wide gear no matter in forward or reverse rotation so as to keep the gear transmission engagement gapless; the double worm mechanism eliminates transmission reverse clearance by two sets of worm transmission devices which are symmetrical about the center of the worm wheel at the time, so that high-precision machining of the machine tool is realized.
4. The two ends of the worm adopt a bearing configuration scheme that one end is one-way and two sides of the other end are fixed, the thrust stopping end is not positioned radially by a shaft shoulder, and the fixed end is positioned radially by the shaft shoulder, so that bearing play can be adjusted by adjusting a round nut at one end, pretension is realized, and the influence of temperature rise deformation on the system precision in the worm transmission process is reduced.
5. The tailstock clamping mechanism of the machine tool comprises a design that a gear rack drives the tailstock to feed and a thimble jacks up and down, so that the rigidity of a workpiece during machining is improved, and the degree of automation of machining of the machine tool is improved.
Drawings
FIG. 1 is a general assembly view of a multifunctional high-precision numerical control gear grinding machine according to the invention;
FIG. 2 is a schematic view of an X-axis module of the multifunctional high-precision numerical control gear grinding machine of the invention;
FIG. 3 is a schematic diagram of an A-axis module of the multifunctional high-precision numerical control gear grinding machine;
FIG. 4 is a schematic diagram of a B-axis module of the multifunctional high-precision numerical control gear grinding machine;
FIG. 5 is a schematic view of a grinding wheel dressing member of the multifunctional high-precision numerical control gear grinding machine of the present invention;
FIG. 6 is a front cross-sectional view of a tailstock gripping member of the multi-function high-precision numerically controlled gear grinding machine of the present invention;
FIG. 7 is a top view of the tailstock clamping member of the multi-functional high-precision numerical control gear grinding machine of the present invention mounted on a linear guide of a workbench;
FIG. 8 is a top view of the A-axis module of the multifunctional high-precision numerical control gear grinding machine of the invention.
Wherein: 1-X axis module, 2-machine tool body, 3-A axis module, 4-grinding wheel spindle module, 5-Z axis module, 6-B axis module, 7-Y axis module, 8-tailstock, 9-X axis motor, 10-precision planetary gear reducer, 11-plum blossom shaft coupling, 12-motor base, 13-ball screw, 14-workbench, 15-ball screw nut pair, 16-bearing seat, 17-X axis end cover, 18-first thrust ball bearing, 19-first deep groove ball bearing, 20-A axis motor, 21-reducer, 22-synchronous pulley tensioner, 23-small synchronous pulley, 24-sleeve, 25-large synchronous pulley, 26-double-row thrust ball bearing, 27-spindle box, 28-ultra-precise bidirectional angular contact ball bearings, 29-A shaft end covers, 30-workpiece spindles, 31-connecting flanges, 32-three-jaw chucks, 33-grinding wheel workbench boxes, 34-worms, 35-observation windows, 36-worm gears, 37-large gears, 38-motor fixing covers, 39-pinion gears, 40-rotating shaft workbench motors, 41-turntable bearings, 42-turntables, 43-electric spindle fixing seats, 44-grinding electric spindles, 45-BT30 tool shanks, 46-flanges, 47-grinding wheels, 48-ejector pins, 49-tailstock left end covers, 50-ejector pin shafts, 51-second deep groove ball bearings, 52-tailstock seat bodies, 53-double-row cylindrical roller bearings, 54-springs, 55-second thrust ball bearings, 56-tailstock right end cover, 57-tailstock driving motor, 58-tailstock gear, 59-workbench linear guide rail, 60-rack, 61-A shaft motor seat and 62-grinding wheel trimmer.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a multifunctional high-precision numerical control gear grinding processing technical scheme and equipment, which can realize high-speed high-efficiency, high-precision and precision stability, processing universality and multifunctional integration, and improve the precision of processed parts and the universality of a machine tool, thereby improving the utilization rate of the equipment and reducing the manufacturing cost.
In order that the above-recited objects, features and advantages of the invention will become more apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
As shown in FIG. 1, the invention provides a multifunctional high-precision numerical control gear grinding processing technical scheme and equipment, which comprises an X-axis module 1 shown in FIG. 2, an A-axis module 3 shown in FIG. 3, a B-axis module 1 shown in FIG. 4, a grinding wheel dressing part of an auxiliary processing mechanism shown in FIG. 5 and a tailstock clamping part of the auxiliary processing mechanism shown in FIG. 6. The A-axis module 3 and the auxiliary processing mechanism clamp the workpiece, the B-axis module 6 adjusts the processing angle of the grinding wheel, the X-axis module 1, the Y-axis module 7 and the Z-axis module 5 are in linkage feeding after adjusting the processing positions, the grinding electric spindle 44 rotates at a high speed to form and grind the workpiece, and the A-axis module 3 and the B-axis module 6 can realize indexing of the workpiece with spiral angles and lead angles such as helical gears, worms and the like through adjusting the angles.
As shown in fig. 2, the X-axis module of the present invention comprises an X-axis motor 9, a precision planetary gear reducer 10, a plum blossom shaft coupling 11, a motor base 12, a ball screw 13, a workbench 14, a ball screw nut pair 15, a bearing block 16, an X-axis end cover 17, a first thrust ball bearing 18, a first deep groove ball bearing 19, a workbench linear guide rail 58, and an a-axis motor base 60; the X-axis motor 9 is fixedly connected with the precise planetary gear reducer 10 through an inner hexagon screw, the precise planetary gear reducer 10 is fixedly connected with the plum blossom coupler 11 through an inner hexagon screw, two ends of the ball screw 13 are supported by a first deep groove ball bearing 19 and a first thrust ball bearing 18, a felt ring and a sleeve are used for sealing oil retaining, a bearing gap is pre-tightened through double nuts, the left shaft end and the right shaft end of the ball screw 13 are sealed by an X-axis end cover 17, and the X-axis end cover 17 is respectively fixed on the bearing seat 16 and the motor seat 12 through inner hexagon cylindrical screws. The ball screw nut pair 15 is matched with the ball screw 13, the workbench 14 is arranged on the ball screw nut pair 15 through an inner hexagon screw and a pin, and the power of the X-axis motor 9 is transmitted to the ball screw 13 through the precise planetary gear reducer 10 and the plum blossom shaft coupling 11, so that the workbench 14 is driven to feed in the X-axis direction.
As shown in fig. 3 and 8, the a-axis module of the present invention includes an a-axis motor 20, a speed reducer 21, a synchronous pulley tensioning mechanism 22, a small synchronous pulley 23, a sleeve 24, a large synchronous pulley 25, a double-row thrust ball bearing 26, a main spindle box 27, an ultra-precise bidirectional angular contact ball bearing 28, an a-axis end cover 29, a workpiece main spindle 30, a connecting flange 31, and a three-jaw chuck 32. The A-axis motor 20 is fixedly connected with the speed reducer 21 through an inner hexagon screw, an output shaft of the speed reducer 21 is connected with the small synchronous pulley 23 through a key, the small synchronous pulley 23 is connected with the large synchronous pulley 25 through a synchronous belt, the speed reducer 21 and the large synchronous pulley and the small synchronous pulley are decelerated twice to enable the three-jaw chuck 32 to slowly rotate according to the indexing of a workpiece with a spiral angle or a lead angle such as a bevel gear or a worm, the synchronous pulley tensioner 22 is installed between the speed reducer 21 and the small synchronous pulley 23 and used for adjusting the tightness of the synchronous pulley, the large synchronous pulley 25 is connected with the workpiece spindle 30 through a key to drive the workpiece spindle 30 to rotate, two ends of the workpiece spindle 30 are respectively supported by a double-row thrust ball bearing 26, the right end of the workpiece spindle 30 is supported by an ultra-precise bidirectional angular contact ball bearing 28, the two bearings are combined to be used, the two bearings do not interfere with each other, the axial force and the large radial force in two directions can be borne simultaneously, the left end matched with the large synchronous pulley 25 is fixed and loosened by using a double nut, the two ends matched with the workpiece spindle 30 and the spindle box 27 are respectively fixed by using the A-axis end cover 29, and the inner sleeve 24 is used for adjusting the felt gap. The right shaft shoulder of the workpiece spindle 30 is connected with a connecting flange 31 through an inner hexagon screw, and the connecting flange 31 is fixedly connected with a three-jaw chuck 32 through the inner hexagon screw. The spindle box 27 and the motor base 12 are mounted on the machine bed 2 by screws and pins.
As shown in FIG. 4, the B-axis module of the present invention comprises a grinding wheel cutter head mechanism, wherein the grinding wheel cutter head mechanism comprises a grinding wheel workbench box 33, a worm 34, an observation window 35, a worm wheel 36, a large gear 37, a motor fixing cover 38, a pinion 39, a rotary shaft workbench motor 40, a turntable bearing 41, a turntable 42, an electric spindle fixing seat 43, a grinding electric spindle 44, a BT30 cutter handle 45, a flange 46 and a grinding wheel 47, the observation window 35 is arranged on the grinding wheel workbench box 33 through screws, the rotary shaft workbench motor 40 is connected with the motor fixing cover 38 through screws, the motor fixing cover 38 is fixed on the grinding wheel workbench box 33 through hexagon socket head cap screws, the output end of the rotary shaft workbench motor 40 is connected with the pinion 39 through a key, the pinion 39 is meshed with the large gear 37, the large gear 37 is connected with the worm 34 through a key, the power of the rotary shaft workbench motor 40 is transmitted to the worm 34 after being reduced by the meshing gears, the upper rotary shaft workbench motor 40 and the lower rotary shaft workbench motor 40 are installed and transmitted in the same mode, the worm 34 is meshed and transmitted with the worm wheel 36, the worm wheel 36 is connected with the inner ring of the rotary table bearing 41 through a screw and connected with the rotary table 42 through the screw, the worm 34 drives the worm wheel 36 to rotate, the worm wheel 36 and the rotary table 42 are fixedly connected with the rotary table bearing 41 and driven by the rotary table 42 to rotate, the electric spindle fixing seat 43 is fixedly connected with the rotary table 42 through a pin and the screw, finally, the grinding electric spindle 43 is driven to rotate around the B-axis module 6, meanwhile, the grinding electric spindle motor drives the grinding electric spindle 43 to rotate at a high speed, the tail end of the grinding electric spindle 43 is fixedly connected with the tool shank 45 of the BT30, and the connecting flange 46 is installed on the tool shank 45 of the BT30 and is pre-tightened and anti-loose through double nuts. The grinding wheel 47 is mounted on the attachment flange 46.
As shown in fig. 5, the dressing unit of the present invention includes a dressing unit 62, and when the dressing unit needs to be adjusted, the dressing unit adjusts the dressing unit 47 to a vertical direction and rotates at a high speed to be close to the dressing unit 62, thereby completing dressing.
As shown in fig. 6 and 7, the tailstock clamping member of the present invention comprises a thimble 48, a left end cover 49, a thimble shaft 50, a second deep groove ball bearing 51, a tailstock seat 52, a double-row cylindrical roller bearing 53, a spring 54, a second thrust ball bearing 55, a tailstock right end cover 56, a tailstock driving motor 57, and a tailstock gear 58, wherein the thimble 48 is supported on the tailstock seat 52 through the double-row cylindrical roller bearing 53, the left and right ends are respectively sealed by the tailstock left end cover 49, the tailstock right end cover 56 and a felt collar, the tailstock driving motor 57 is mounted on the tailstock seat 52 through screws, the output end shaft is connected with the tailstock gear 58 through a key, the tailstock gear 58 is matched with a rack 60, the tailstock seat 52 is integrally mounted on a table linear guide 59 of a linear motion module through a linear track slider, so that the tailstock seat 52 can move left and right along the X axis direction, and when processing, the tailstock seat 52 is moved right, the thimble 48 is pushed against a workpiece on the three chucks 32, and the processing is completed, and the buffer effect is realized through the spring 54.
The above examples only show preferred embodiments of the present invention, which are described in more detail, but the present invention is not limited to these examples, and it should be noted that it is obvious to those skilled in the art that the present invention is not limited to these examples. Any modifications thereof fall within the scope of the present invention without departing from the spirit of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A multifunctional high-precision numerical control gear grinding machine tool is characterized in that: the grinding wheel grinding machine comprises a T-shaped machine tool body, a workpiece movement mechanism, a grinding wheel movement mechanism and an auxiliary machining mechanism, wherein the workpiece movement mechanism and the grinding wheel movement mechanism comprise an X-axis module, a Y-axis module, a Z-axis module, an A-axis module and a B-axis module, the X-axis module, the Y-axis module and the Z-axis module are linear movement modules, and the A-axis module and the B-axis module are rotary movement modules;
the workpiece movement mechanism comprises an X-axis module and an A-axis module which are used for driving a workpiece to move; the grinding wheel movement mechanism comprises a Y-axis module, a Z-axis module and a B-axis module which are used for driving a grinding wheel spindle to move; the auxiliary processing mechanism comprises a grinding wheel dressing part and a tailstock clamping part.
2. The multifunctional high-precision numerical control gear grinding machine tool according to claim 1, wherein: the X-axis module is supported on the machine tool body, and the A-axis module is supported on the X-axis module; the A-axis module drives the workpiece to rotate around the X-axis module, and the X-axis module drives the workpiece and the A-axis module to move in the X-axis direction.
3. The multifunctional high-precision numerical control gear grinding machine tool according to claim 2, wherein: the X-axis module comprises an X-axis motor, a precise planetary gear reducer, a plum blossom shaft coupling, a ball screw, a linear motion module, an X-axis fixing part and a workbench, wherein the input end of the precise planetary gear reducer is fixedly connected with the output end of the X-axis motor through a screw, the output end of the precise planetary gear reducer is fixedly connected with the plum blossom shaft coupling through a screw, two ends of the ball screw are supported through the X-axis fixing part, oil is blocked by a felt ring in a sealing mode, and the ball screw is locked by a double nut.
4. The multifunctional high-precision numerical control gear grinding machine tool according to claim 2, wherein: the A-axis module comprises an A-axis motor, a synchronous pulley transmission device, a workpiece spindle, a spindle box body, an A-axis bearing supporting part and a three-jaw chuck, and the A-axis motor drives the synchronous pulley to rotate.
5. The multifunctional high-precision numerical control gear grinding machine tool according to claim 4 is characterized in that: the workpiece spindle is connected with a large synchronous pulley of the synchronous pulley transmission device, a small synchronous pulley of the synchronous pulley transmission device is connected with the A-axis motor, the workpiece spindle is decelerated, and a center distance adjusting groove hole is formed in the A-axis motor seat and used for adjusting the center distance between the large synchronous pulley and the small synchronous pulley.
6. The multifunctional high-precision numerical control gear grinding machine tool according to claim 1, wherein: the Y-axis module is fixed on the machine tool body, the Y-axis module is vertical to the X-axis module, an upright post is arranged on the Y-axis module upwards, the Z-axis module is supported on the upright post, the B-axis module is supported on the Z-axis module, and the movement of the Y-axis module, the Z-axis module and the B-axis module form the movement of the grinding wheel.
7. The multifunctional high-precision numerical control gear grinding machine tool according to claim 1, wherein: the B-axis module comprises a transmission clearance elimination mechanism and a grinding wheel cutter head mechanism, the transmission clearance elimination mechanism comprises a double worm and a clearance elimination gear, the worm adopts a bearing supporting mode that one end is one-way thrust and two sides of one end are fixed, the thrust end adjusts bearing play through adjusting one end round nut to realize pre-tightening, and the clearance elimination gear is fixedly connected with the worm.
8. The multifunctional high-precision numerical control gear grinding machine tool according to claim 7 is characterized in that: the grinding wheel cutterhead mechanism comprises a grinding wheel, a grinding electric spindle, a flange, an electric spindle fixing seat and a BT30 cutter handle,
the grinding wheel is fixed on the BT30 cutter handle through a BT30 cutter handle shaft shoulder, a flange and a double nut, the grinding electric spindle is fixedly connected with the BT30 cutter handle and is fixed on the electric spindle fixing seat through an inner hexagonal cylindrical head screw, and the electric spindle fixing seat is fixed on a rotary table of the B-axis module through an inner threaded cylindrical pin and an inner hexagonal cylindrical head nut.
9. The multifunctional high-precision numerical control gear grinding machine tool according to claim 1, wherein: the grinding wheel dressing component comprises a grinding wheel dresser, and the grinding wheel dresser is fixedly connected to the main shaft box body through an inner hexagonal cylindrical head screw and a cylindrical pin.
10. The multifunctional high-precision numerical control gear grinding machine tool according to claim 1, wherein: the tailstock clamping component comprises a thimble, a tailstock rotating shaft, a tailstock driving servo motor, a gear, a rack and a tailstock seat body, wherein the thimble is fixedly connected with the tailstock rotating shaft, the tailstock rotating shaft is axially fixed in a mode of utilizing an end cover, a sleeve, a shaft shoulder and a double nut from the thimble to the tail end, a double-row cylindrical roller bearing, a second deep groove ball bearing, a spring and a second thrust ball bearing are sequentially assembled, the tailstock driving motor is fixed on the tailstock seat body through a screw, the gear is fixed on a tailstock driving motor shaft through a pin and a set screw, and the rack is installed on a machine tool body boss.
CN202211593575.XA 2022-12-13 2022-12-13 Multifunctional high-precision numerical control gear grinding machine tool Pending CN116100088A (en)

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CN202211593575.XA CN116100088A (en) 2022-12-13 2022-12-13 Multifunctional high-precision numerical control gear grinding machine tool

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Application Number Priority Date Filing Date Title
CN202211593575.XA CN116100088A (en) 2022-12-13 2022-12-13 Multifunctional high-precision numerical control gear grinding machine tool

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117506015A (en) * 2024-01-08 2024-02-06 苏州艾布纳精密机械有限公司 Polishing device for mechanical part production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117506015A (en) * 2024-01-08 2024-02-06 苏州艾布纳精密机械有限公司 Polishing device for mechanical part production
CN117506015B (en) * 2024-01-08 2024-04-23 苏州艾布纳精密机械有限公司 Polishing device for mechanical part production

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