CN201900339U - Control system of numerical control hobber - Google Patents
Control system of numerical control hobber Download PDFInfo
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- CN201900339U CN201900339U CN2010206464242U CN201020646424U CN201900339U CN 201900339 U CN201900339 U CN 201900339U CN 2010206464242 U CN2010206464242 U CN 2010206464242U CN 201020646424 U CN201020646424 U CN 201020646424U CN 201900339 U CN201900339 U CN 201900339U
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- numerical control
- motor driver
- feeding motor
- teaching
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Abstract
The utility model provides a control system of a numerical control hobber, which comprises a CPU (central processing unit), a system bus, a photo-coupled isolation I/O (input/output) circuit, an axial feeding motor driver, a radial feeding motor driver, a rotary feeding motor driver and a PLC (programmable logic controller), wherein the photo-coupled isolation I/O circuit is connected with the system bus, and the axial feeding motor driver, the radial feeding motor driver, the rotary feeding motor driver and the PLC are connected with the photo-coupled isolation I/O circuit. The system bus is connected with a hob shaft encoder in the numerical control hobber through an encoder counting card. The control system can be used for developing and practicing teaching phases of the course of numerical control technology, and can be used for displaying teaching contents, such as composition of numerical control equipment, development process of numerical control equipment, mechanical structural design of numerical control equipment, hardware structure of numerical control equipment, software structure of numerical control equipment, C language development and practice, hob machining experiments and the like. The control system combines advanced technique of current hob machining and economy of teaching equipment, and meets experimental teaching of hob machining while teaching cost can be reduced greatly.
Description
Technical field
The utility model relates to a kind of the teaching with the control system of chain digital control gear hobbing machine.
Background technology
The numerical control device that industrial production is used not only costs an arm and a leg, and because of technical know-how, is difficult to show to the student details such as numerical control device development process.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of simple in structure, with low cost and be suitable for showing the control system of the chain digital control gear hobbing machine that the software and hardware of numerical control device is formed.
For solving the problems of the technologies described above, the utility model provides a kind of control system of chain digital control gear hobbing machine, comprise: CPU, the system bus that links to each other with CPU, the light-coupled isolation I/O circuit that links to each other with system bus, the axial feed motor driver, radial feed motor driver, rotary feed motor driver and the PLC that link to each other with light-coupled isolation I/O circuit, this PLC links to each other with the hobboing cutter motor driver; Described system bus links to each other with cutter shaft encoder in the chain digital control gear hobbing machine by an encoder to count card.
Further, the control end of described CPU is connected with the numerical control keyboard, and the control end of described light-coupled isolation I/O circuit is connected with control panel.
The utlity model has positive effect: (1) chain digital control gear hobbing machine of the present utility model can be " Numeric Control Technology " course and carries out the practical teaching link, can be used for showing the contents of courses such as numerical control device composition, numerical control device development process, the design of numerical control device frame for movement, Computerized Numerical Control system hardware structure, cnc system software structure, C language development are put into practice, gear hobbing machining experiment.This equipment combines the advanced technology of current gear hobbing processing with the economy of teaching equipment, when satisfying the teaching of gear hobbing machining experiment, can reduce instruction cost greatly.In the chain digital control gear hobbing machine of the present utility model, the cutter shaft inclination angle adjusting structure is simple, convenient, practical.(2) transmission feeding mechanism adopts numerical control control, has high sensitivity, good guiding accuracy, and is economical and practical.Based on the digital control system in open type of Industrial PC Computer, the hardware using modular construction, large-screen lc shows that function software friendly interface, system maintenance and function expansion are convenient.It is lower that complete equipment is produced cost in batches.This complete equipment is used example as teaching, can significantly improve student's learning interest and results of learning.(3) the complete machine lathe bed is designed to column and base Bolt Connection, is convenient to process and installation, and column and base are the closed frame Welding Structure, guarantee to have enough rigidity, the good and saving material of manufacturability.Cutter shaft adopts double supporting structure, supports with paired high accuracy angular contact ball bearing, good rigidly, can eliminate the gap, has satisfied gear-hobbing machine to the high rigidity of hobboing cutter, the demanding requirement of axial location tool setting.Axially reach depth-feed mechanism and adopt the high accuracy precise ball screw pair, leading screw supports with paired high accuracy angular contact ball bearing, sensitivity, no gap, good rigidly.Axially reach the radial feed slide unit and adopt high-precision cylinder line slideway and linear bearing, enough kinematic accuracies and good guiding accuracy are arranged, economic and practical.Leading screw is driven by stepper motor, adopts band transmission synchronously to make one-level and slows down, and realizes that reduction of speed increases torque.
Description of drawings
Fig. 1 is the structural representation of the chain digital control gear hobbing machine in the present embodiment.
Fig. 2 is that the A of the chain digital control gear hobbing machine among Fig. 1 is to view.
Fig. 3 is the vertical view of the chain digital control gear hobbing machine among Fig. 1.
Fig. 4 is the structural representation of the digital control system in the chain digital control gear hobbing machine of the present utility model.
The specific embodiment
See Fig. 1-Fig. 4, the chain digital control gear hobbing machine of present embodiment comprises: main frame and digital control system (that is: the control system of chain digital control gear hobbing machine); Described main frame comprises: base 5, be located at base 5 one ends column 1, be located at axial feed assembly 2 on this column 1, under the control of this axial feed assembly 2 axially the hobboing cutter assembly 3 of displacement and processing work 11, be located at the radial feed assembly 6 on the base 5, the rotary feed assembly 4 that is used for place work piece 11 of radial displacement under the control of this radial feed assembly 6; Described axial feed assembly 2 comprises axial feed motor 21, and radial feed assembly 6 comprises radial feed motor 61, and hobboing cutter assembly 3 comprises the hobboing cutter motor 31 that is used to drive cutter shaft 33, and rotary feed assembly 4 comprises rotary feed motor 41.
Described digital control system comprises: CPU, the system bus that links to each other with CPU, the light-coupled isolation I/O circuit that links to each other with system bus, the axial feed motor driver, radial feed motor driver, rotary feed motor driver and the PLC that link to each other with light-coupled isolation I/O circuit, this PLC links to each other with the hobboing cutter motor driver; Described cutter shaft is provided with the cutter shaft encoder, and this cutter shaft encoder links to each other with described system bus by the encoder to count card.Light-coupled isolation I/O circuit is the signal input and output electric current of light-coupled isolation.
The control end of described CPU is connected with the numerical control keyboard, and the control end of described light-coupled isolation I/O circuit is connected with control panel.
Described axial feed assembly 2 also comprises: be located at the axial ball-screw bearing block 28 on column 1 front end face, the vertical screw mandrel 26(that is located in this axial ball-screw bearing block 28 is an X-axis), be located at column 1 the place ahead and in a pair of cylindrical guide 25 of screw mandrel 26 both sides, be located at the axial encoder 22 and the synchronous pulley 27 that links to each other with described axial feed motor 21 transmissions on screw mandrel 26 tops; The mounting seat 30 of described hobboing cutter assembly 3 is located on described screw mandrel 26 and the cylindrical guide 25.
Be provided with counterweight 24 in the described column 1, this counterweight 24 links to each other with the mounting seat 30 of described hobboing cutter assembly 3 by the directive wheel of steel wire rope 23 through being located at column 1 top.This balancing weight is lifted on the axial slide unit through wire rope pulley by two steel wire ropes, balances the weight of the hobboing cutter assembly of 70-80%, and is main in order to alleviate the axial force of axial feed leading screw.Make axial feed slide unit flexible operation.
Described radial feed assembly 6 also comprises: be located at a pair of radial guidance 62 on the base 5 and be located at this to the ball-screw transmission mechanism 63 between the radial guidance 62, the end of the ball-screw in the ball-screw transmission mechanism 63 (being the Z axle) is provided with radially encoder 64.
Described hobboing cutter assembly 3 also comprises: by a plurality of set bolts be located at rotating disk 32 on the described mounting seat 30, be used to be provided with described cutter shaft 33 bearing block 36, be located at described cutter shaft 33 ends cutter shaft encoder 35, be located at the corner scale direction board 34 on the described mounting seat 30; Described hobboing cutter motor 31 is in transmission connection by synchronous band with cutter shaft 33.
Described rotary feed assembly 4 also comprises: be located on the described a pair of radial guidance 62 and the installation base plate 40 that links to each other with described ball-screw transmission mechanism 63, the rotary feed encoder 45, the bearing that link to each other with the output shaft of described rotary feed motor 41 on being located at this installation base plate 40 are connected the staged workpiece spindle 43 of installing on the base plate 40 and being in transmission connection by synchronous band with rotary feed motor 41, the workpiece clamping mechanism 47 of being located at workpiece spindle 43 tops.
The supporting system of main frame is the section material framework Welding Structure, and compact conformation, rigidity height, manufacturability are good.The cutter shaft of double base, axial location string cutter is accurately convenient.The cutter shaft inclination angle adjusting structure is simple, convenient, practical.Axially and depth-feed mechanism adopt: stepper motor, band, ball screw assembly, and cylinder line slideway synchronously, have high sensitivity, good guiding accuracy, economical and practical.The numerical control device all functions concentrate in the accurate PC-610 industry of the station symbol cabinet, and digital quantity input-output card, encoder capture card are installed in the motherboard slot, install on the case front panel: handwheel, numeric keypad, crawl button, scram button; Various control signal connectors are installed on the upper cover plate outer surface, and inner surface is installed binding post.Adopt electric board, installation PLC in common hard disk position is being installed.Cnc system software design, cnc system software are based on the DOS platform, with C language development tension management software, with the multi-shaft interlocked real-time control software of compilation exploitation.
In order to reduce manufacturing cost, all motors all adopt stepper motor, and wherein cutter shaft is controlled its startup, stopped, deciding rotary speed movement by PLC.Photoelectric encoder is installed on the cutter shaft, gear hobbing adds the man-hour digital control system and controls the workpiece spindle rotational angle again after detecting the cutter shaft corner earlier, promptly by detect the umber of pulse that the cutter shaft encoder sends in the sampling period, calculate the umber of pulse that send to the workpiece spindle driver again.Z, X-axis are installed photoelectric encoder, are used for the accurate location at zero point.
Realize transmission with being with synchronously between stepper motor and workpiece spindle.Band transmission synchronously has gear-driven accurate gearratio based on it, and the flexibility of band transmission centre-to-centre spacing is arranged again.According to synchronously with the moment of torsion of required transmission, select that the arc toothed band of HTD-HTD-475-5M-20(pitch length is that 475 ㎜, the number of teeth are 95, model is 5M, bandwidth 20 ㎜).The band driving pulley is 20-5M-25F synchronously, and passive belt wheel is 72-5M-25F.The driving pulley number of teeth is Z
Main=20, the passive belt tooth number is Z
Quilt=72, realize the reduction of speed transmission of gearratio i=72/20=3.6.
Stepper motor 90BYG350C can reach 10000 pulse motors through sub-circuit control and go around.And the indexing accuracy of workpiece spindle is 0.01 °/pulse.The required umber of pulse of promptly going around is: N=360 °/0.01 °=36000=4 * 2500 * 3.6, promptly under band transmission (gearratio i=3.6) synchronously, realized that motor changes four commentaries on classics, and workpiece spindle is goed around.Workpiece spindle adopts conventional multidiameter, with bearing 7106GB297-84(Ф 30 * Ф 55 * 17) the realization double base.Top processes the location with axle and external screw thread M16, location and clamping during as Gear Processing.Bearing 7106GB297-84 can radially reach axial gap by what reconditioning end cap pad was eliminated axle, to improve the kinematic accuracy and the dynamic and static rigidity of axle.
The radial feed slide unit mainly by feeding transmission (being the ball-screw transmission mechanism) and radially the slide unit support rails form.The guide rail of radial feed slide unit adopts linear bearing and linear cylindrical guide rail 15.Linear bearing become to slide to rolling, and friction is reduced greatly, has improved the sensitivity of guide rail, has avoided creeping, and has improved guide rail service life.
Balancing weight is lifted on the axial slide unit through wire rope pulley by two steel wire ropes, balances the weight of the slide unit of 70-80% and rotary disk etc., and is main in order to alleviate the axial force of axial feed leading screw.Make axial feed slide unit flexible operation.
The hobboing cutter pendulum angle is realized by a manual guiding mechanism.When adjusting the angle of cutter shaft and workpiece spindle, unclamp 3 rotating disk set bolts 5 earlier, manually rotating disk 2 is turned over a required angle, institute's gyration is by 3 indications of corner scale direction board.And then tighten 3 set bolts 5.
The chain digital control gear hobbing machine of present embodiment at first enters the lathe adjusting module and carries out the return reference point operation after start, return reference point is meant that moving-member falls back on a changeless limit point in the lathe coordinate system, thereby sets up lathe coordinate system.The return reference point operation is passed through near the switch coarse positioning, then by encoder zero pulse fine positioning.Lathe moves to the lathe reference point with setting speed during return reference point, when the inductive head that covers near the switch block near switch, lathe slows down and enters the low-speed motion stage, this moment, digital control system was constantly inquired about encoder zero pulse signal, after reading the zero pulse signal, lathe is stop motion at once, and leading screw (encoder) accurately is parked in circumferencial direction fixed position-encoder zero-bit, and this moment, lathe accurately was parked in the lathe reference point.
The chain digital control gear hobbing machine of present embodiment has the crawl function: pinning each crawl key of digital control system guidance panel can arbitrarily move Z, X, workpiece spindle, is stop motion when unclamping the crawl key.
The chain digital control gear hobbing machine of present embodiment has the handwheel function: realize each is finely tuned by handwheel, enter the lathe adjusting module after, select certain handwheel function after, select the handwheel multiplying power again.Rotate handwheel then, cnc system software whenever detect handwheel send a pulse promptly to correspondence the axle driver send the individual pulse of n (n=1 * handwheel multiplying power).
Before the gear hobbing processing, be introduced into parameter input module, establish gear parameter (number of teeth, modulus, the facewidth), processing feed speed.The gear hobbing processing module, at first radially feed, at axial feed, the reprocessing beginning, PLC drives the cutter shaft rotation, and workpiece is followed main axis rotation, and the Z axle is by setting the process velocity feeding.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.
Claims (2)
1. the control system of a chain digital control gear hobbing machine, it is characterized in that comprising: CPU, the system bus that links to each other with CPU, the light-coupled isolation I/O circuit that links to each other with system bus, the axial feed motor driver, radial feed motor driver, rotary feed motor driver and the PLC that link to each other with light-coupled isolation I/O circuit, this PLC links to each other with the hobboing cutter motor driver;
Described system bus links to each other with cutter shaft encoder in the chain digital control gear hobbing machine by an encoder to count card.
2. the control system of a kind of chain digital control gear hobbing machine according to claim 1, it is characterized in that: the control end of described CPU is connected with the numerical control keyboard, and the control end of described light-coupled isolation I/O circuit is connected with control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206464242U CN201900339U (en) | 2010-12-07 | 2010-12-07 | Control system of numerical control hobber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206464242U CN201900339U (en) | 2010-12-07 | 2010-12-07 | Control system of numerical control hobber |
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| Publication Number | Publication Date |
|---|---|
| CN201900339U true CN201900339U (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206464242U Expired - Fee Related CN201900339U (en) | 2010-12-07 | 2010-12-07 | Control system of numerical control hobber |
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| CN (1) | CN201900339U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615358A (en) * | 2012-03-15 | 2012-08-01 | 温岭市精仁机械有限公司 | Numeric control worm-gear hobbing machine |
| CN103624333A (en) * | 2013-09-16 | 2014-03-12 | 浙江速成精密机械有限公司 | Direct-driven worm-gear hobbing machine |
| CN103777566A (en) * | 2014-01-03 | 2014-05-07 | 无锡市明鑫机床有限公司 | Machine tool zero point outage conservation method based on simple numerical control system 808D |
| CN111381613A (en) * | 2020-03-24 | 2020-07-07 | 南京工程学院 | Feeding compliance control system and method of automatic assembly system |
-
2010
- 2010-12-07 CN CN2010206464242U patent/CN201900339U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615358A (en) * | 2012-03-15 | 2012-08-01 | 温岭市精仁机械有限公司 | Numeric control worm-gear hobbing machine |
| CN103624333A (en) * | 2013-09-16 | 2014-03-12 | 浙江速成精密机械有限公司 | Direct-driven worm-gear hobbing machine |
| CN103624333B (en) * | 2013-09-16 | 2016-02-10 | 浙江速成精密机械有限公司 | Direct-drive type worm-gear hobbing machine |
| CN103777566A (en) * | 2014-01-03 | 2014-05-07 | 无锡市明鑫机床有限公司 | Machine tool zero point outage conservation method based on simple numerical control system 808D |
| CN103777566B (en) * | 2014-01-03 | 2016-06-22 | 无锡市明鑫机床有限公司 | Lathe zero point power-off keeping method based on simple nc system 808D |
| CN111381613A (en) * | 2020-03-24 | 2020-07-07 | 南京工程学院 | Feeding compliance control system and method of automatic assembly system |
| CN111381613B (en) * | 2020-03-24 | 2022-12-13 | 南京工程学院 | Feeding compliance control system and method of automatic assembly system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20131207 |