CN106078510A - A kind of grinding machine with on-line measurement function - Google Patents
A kind of grinding machine with on-line measurement function Download PDFInfo
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- CN106078510A CN106078510A CN201610599801.3A CN201610599801A CN106078510A CN 106078510 A CN106078510 A CN 106078510A CN 201610599801 A CN201610599801 A CN 201610599801A CN 106078510 A CN106078510 A CN 106078510A
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- 238000000227 grinding Methods 0.000 title claims abstract description 100
- 238000005259 measurement Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 24
- 229910045601 alloy Inorganic materials 0.000 claims description 34
- 239000000956 alloy Substances 0.000 claims description 34
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 14
- 230000001360 synchronised Effects 0.000 claims description 14
- 239000000523 sample Substances 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 10
- 230000000087 stabilizing Effects 0.000 claims description 10
- 230000004301 light adaptation Effects 0.000 claims description 9
- 230000011664 signaling Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000000875 corresponding Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 230000002093 peripheral Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000003754 machining Methods 0.000 abstract description 6
- 239000000428 dust Substances 0.000 description 5
- 229910001651 emery Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 210000001138 Tears Anatomy 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003044 adaptive Effects 0.000 description 2
- 238000011030 bottleneck Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 210000003491 Skin Anatomy 0.000 description 1
- 229910008947 W—Co Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005296 abrasive Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
- B24B49/045—Specially adapted gauging instruments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
Abstract
The invention discloses a kind of grinding machine with on-line measurement function, it is characterized in that, it include in frame, control system, frame arrange for fixing the wheel grinding mechanism of the chuck of workpiece, Grinder bench and upper setting thereof, on-line measurement system, driving wheel grinding mechanism and the constant force griding system of on-line measurement system action；Control system connects control wheel grinding mechanism, on-line measurement system, constant force griding system；Described on-line measurement system uses point contact type to synchronize on-line measurement mode, the on-line measurement supporting mechanism including servo-control system, being arranged on Grinder bench, on-line measurement chi, the measurement process of on-line measurement chi and course of processing real-time synchronization.Present configuration is simple, easy to use, and machining accuracy is high, good stability, and compared to the product of same type, production efficiency is high, and performance is more superior.
Description
Technical field
The present invention relates to grinding machine technical field, especially relate to a kind of grinding machine with on-line measurement function.
Background technology
Being developed so far of China's Cemented Carbide Industry, product variety is the most complete, relates to metal cutting, mining, draws
Each fields such as molding tool, wear part, except part high-performance precision abrasive coating blade and kit, high-performance superfine alloy
Bar and a small amount of big different goods need to be from external imports, and overwhelming majority product is Chinese all can be produced.The hard carbide industry of China
While fast development, still exist research and development of products input relative deficiency, equipment the level that renovates is the highest, alloy
Produce and the equipment of product produce the problem of the aspects such as disconnection, cause that industry innovation ability is strong, high added value and supporting product
The problems such as product are few, industrial economy benefit is the highest.Wherein hart metal product produces the development deficiency of equipment is restriction China hard
The bottleneck that alloy product produces.According to ASSOCIATE STATISTICS, the most external minority advanced enterprises product is pressed in the occupation rate of Chinese market
Weight calculates 1.5% less than China's hard alloy yield, but year alloy gross sales amount accounts for and always sells in China's hard alloy year
More than the 10% of volume.Along with the demand of alloy cutter is increased by domestic industries, the Precision Machining of alloy cutter becomes conjunction
The bottleneck of gold production Rapid Development of Enterprise, it is the most domestic that to specialize in alloy Special Purpose Machine for Processing enterprise few, therefore alloy
Cutter manufacturing enterprise is in the urgent need to undergoing technological transformation to some processing apparatus.
Through Site Detection, it is as follows that current China alloy cutter produces lathe situation:
1, lathe uses the time longer, and equipment exists the most aging；
2, lathe grinds workpiece is W-Co kind carbide wafer, and working environment dust pollution is bigger；
3, in the course of the work, there is certain cooling water corrosion, work spindle is produced certain precision impact, simultaneously
Because life-time service, work spindle revolution gap becomes big, affects machining accuracy；
4, during machine operation workman onsite application, there are the following problems:
(1), workman is when carrying out alloy blade grinding, on-the-spot visible substantially alloy dust airborne dust, working environment dust pollution
Relatively big, dust is healthy unfavorable to workman simultaneously；
(2), workman's fixturing blade time, use do not shut down working method, now emery wheel is in high-speed cruising state, workman's hands
Refer to be very close to (eye estimate about about 5cm) with emery wheel, there is severe compromise；
(3), when carrying out grinding work, needing skilled worker's grinder to operate, carry out full manual work, labor intensity is big；
(4), when detecting workpiece, needing to tear open workpiece sensing, single workpiece machines, halfway from starting to grind
Need to regard the experience of workman, repeatedly disassemble detection, working (machining) efficiency is extremely low, easily causes work pieces process excess, causes workpiece report
Useless, high to the operation level requirement of operator.
Wherein, off-line measurement side the most frequently used during the machining detection that (4th) described individual problem is the most traditional
Formula, its concrete operations are in the course of processing of part, according to the experience of operator, according to job demand, are shut down by lathe,
Use measuring instrument, when processing workpiece and disassembling or do not disassemble, workpiece is carried out the detection of physical quantity.This detection mode
It is built upon on the basis of processing is separated from each other with detection, Product checking the when of processing, to be carried out, can not the when of detection
Carry out Product processing, cause production efficiency low, simultaneously as the repeatedly dismounting of workpiece and clamping, make the Set and Positioning base of workpiece
Standard constantly changes, and causes the mismachining tolerance of workpiece artificially to increase, affects product quality.
Therefore, in order to ensure the quality of machine tooling part, production efficiency is greatly improved, reduces production cost, implement to add
Work measures the line Measurement Technique of integration, is significant.Wherein, it is processed that described on-line measurement refers at part
Cheng Zhong, does not tear workpiece open by directly or indirectly metering system and carries out Quality Detection.It is divided into 2 kinds of situations:
1, measure parts in the course of processing of part, measure the machining accuracy of part, the course of processing of part the most in real time
It is to synchronize with detection process；
2, the course of processing separates with detection process, when a step operation completes or after part completion of processing, does not tear workpiece open, measures
Part is detected by mechanism, and it is nonsynchronous for processing with measurement.
But, the measurement scheme used on grinding machine at present is the most preferable, has the modes such as use simulation calculating to estimate sand
Wheel waste in grinding process, then count in grinding machine data system, this kind of design is built upon abrasion of grinding wheel according to one
On the basis of set pattern rule, more the influence factor of actual grinding process, therefore can not preferably reflect real grinding situation,
Therefore the actual application of scheme is unsatisfactory.
Summary of the invention
The one that the purpose of the present invention is contemplated to solve the deficiency of prior art and provides is not only simple in structure, and measures essence
Accurate, it is possible to increase product quality and the grinding machine with on-line measurement function of production efficiency.
The present invention is to use following technical solution to be attained in that a kind of grinding with on-line measurement function
Lathe, it is characterised in that it include in frame, control system, frame arrange for fixing the chuck of workpiece, Grinder bench
And wheel grinding mechanism, on-line measurement system, driving wheel grinding mechanism and the perseverance of on-line measurement system action of upper setting
Power grinding system；Control system connects control wheel grinding mechanism, on-line measurement system, constant force griding system；
Described on-line measurement system uses point contact type to synchronize on-line measurement mode, including servo-control system, is arranged on
On-line measurement supporting mechanism on Grinder bench, on-line measurement chi, the measurement process of on-line measurement chi is real-time with the course of processing
Synchronize, when i.e. measuring, it is not necessary to shut down detection；
Described constant force griding system includes the gentle unloading device that pushes back of servomotor, synchronous transmission mechanism, described servomotor
For permanent torque servomotor, permanent torque servomotor is constantly fed power through what synchronous transmission mechanism transmission was converted to workbench,
Making wheel grinding mechanism that workpiece end face is carried out grinding, in whole grinding process, active force between the two is invariable, when
After being ground to the size of regulation, on-line measurement system sends signal, workbench feed-disabling, under control of the control system, and gas
Pushing back unloading device to realize the horizontal operation of workbench and return, after arriving the position of regulation, workbench stop motion, workman takes off work
Part, completes the processing of a workpiece；If the circular knife diameter of processing changes, the selection arranged by regulation and control system
Switch, selects correspondingly sized moment.
Further illustrating as such scheme, described on-line measurement chi includes dip stick, is arranged on dip stick end
Measuring probe measures component with the driving cylinder driving dip stick to be displaced in the horizontal direction in, measuring probe as point cantact, and it is right to detect
The axial dimension variable quantity of elephant；
On-line measurement supporting mechanism includes that the fore bearing corresponding with dip stick supports, rear bearing supports, and Grinder bench is surveyed
Gage is supported by fore bearing, rear bearing support movable is arranged on Grinder bench, and driving cylinder promotes dip stick along grinding machine work
Station horizontal direction produces displacement, thus promotes measuring probe to produce surface with measured workpiece and contact, it is achieved measure process.
Further, the front end of described on-line measurement chi is provided with size self adaptation and grinding status stabilizing mechanism, size
The elastic pressure that self adaptation and grinding status stabilizing mechanism are arranged in including at least three screw of matrix and upper setting thereof, screw
Head, matrix is provided with the jointing holes corresponding with on-line measurement chi, before can securing it within on-line measurement chi by Outer screw
End.
Further, described compensating squeeze head includes headless screw that alloy pressure head threadeds with screw, is connected to alloy
Spring between pressure head and headless screw, one end of alloy pressure head extends outward through screw, and headless screw passes through spring compression
Alloy pressure head, each point of application alloy pressure head on matrix directly contacts with workpiece end face, thus ensures that workpiece is in grinding
During be in stable grinding status.
Further, servo-control system includes servo control mechanism, the position signalling processing module being connected with servomotor, position
Put signal processing module to be connected with servo control mechanism；Position signalling processing module is by the contact surface of measuring probe acquisition and workpiece
Physical location measures signal, and it is compared with target position signal, it may be judged whether processing puts in place, puts in place if undressed,
Sending signal and send servo control mechanism to, servo control mechanism, according to the undressed signal that puts in place, sends constant force voltage signal to servomotor
Device, after servo motor device accepts constant force voltage signal, drives Grinder bench feeding processing；So circulation, until workpiece
Being ground to target size, side stops processing.
Further, dip stick is outside equipped with screw micrometer, and the displacement stroke of dip stick is limited by screw micrometer
System.
Further, the rear sleeve of described dip stick is provided with linkage and embraces ring, and the piston rod front end of driving cylinder is provided with connection
Termination, this connection end is embraced ring with linkage and is connected.
Further, described servomotor is inertia motor TSB13102A, and on servomotor, connection has matched
Servo-driver TSTA30C.
Further, synchronous transmission mechanism includes: drive and driving belt, is provided with double wedge on the surface of drive,
Transmission band is provided with the groove engaged with double wedge.
Further, described air pressure rollback device includes: power set, pipeline, control device and executive component,
Described power set are used for being converted to the mechanical energy of prime mover the pressure energy of working media；
Described pipeline is connected between power set and executive component, serves as the runner of working media；
Described control device is arranged on pipeline, is used for controlling the flow direction of working media, pressure and flow；At pipeline
It is provided with working media storage bin and working media filter；
Described executive component is used for the pressure of working media can be converted to mechanical energy, exports under the effect of working media
Power and motion, to order about working table movement.
Described working media is air, and described power set are air compressor machine, and described executive component is cylinder.
Described working media is hydraulic oil, and described power set are hydraulic press, and described executive component is hydraulic cylinder.
The present invention uses above-mentioned technical solution can reach to provide the benefit that:
1, the present invention uses point contact type on-line synchronous metering system, to the axial dimension physics in the grinding process of workpiece
Amount carries out real-time online measuring, measurement process have the most controlled, certainty of measurement is high, the feature of good stability, and designs adaptive
Answer stabilizing mechanism, it is ensured that complete machine equipment can automatically adapt to workpiece size change when unmanned the intervention and control workpiece simultaneously
Grinding operating attitude, preferably control grinding accuracy and the surface quality of product.
2, the present invention is directed to the machine tool drive deformation of chain caused unstable because of grinding and feeding power in existing grinding
Phenomenon, and for the permanent displacement feeding mode by force used in numerically control grinder design, use the design concept of " constant force griding ", will
Grinding and feeding power is constant constant by unstable specification of variables, makes the deformation of machine tool drive chain be in steady statue and adds working medium
Measuring: compared with hand feed, use constant force feeding system to be processed, crudy is improved significantly；Efficiency is high: use
Constant force griding system carries out constant force processing, and production efficiency can improve about 2 times；Simple in construction: native system is installed at general-purpose grinder
On realize constant force feeding, simple in construction；Easy to operate: according to the diameter of circular knife, the selection in control system is switched and is transferred to
Correspondingly sized moment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the on-line measurement system operation principle of the present invention；
Fig. 3 is the on-line measurement system operating pneumatic circuit diagram of the present invention；
Fig. 4 is the on-line measurement supporting mechanism structural representation of the present invention；
Fig. 5 is size self adaptation and the grinding status stabilizing mechanism structural representation of the present invention；
Fig. 6 is the sectional view of Fig. 5；
Fig. 7 is the synchronous transmission mechanism structural representation of the present invention；
Fig. 8 is that center grinding schematic diagram crossed by emery wheel；
Fig. 9 is carbide wafer grinding force analysis schematic diagram；
Figure 10 is that grinding stress improves structural representation；
Figure 11 is the design drawing of stress point；
Figure 12 is the design drawing of stress point.
Description of reference numerals: 1, frame 2, control system 3, chuck 4, Grinder bench 5, wheel grinding mechanism 5-
1, skive 5-2, electric machine 6, on-line measurement system 6-1, servo-control system 6-11, servo control mechanism 6-12,
Position signalling processing module 6-2, on-line measurement supporting mechanism 6-21, fore bearing supporting 6-22, rear bearing supporting 6-3,
Line dip stick 6-31, dip stick 6-32, measuring probe 6-33, driving cylinder 7, constant force griding system 7-1, servomotor 7-
2, synchronous transmission mechanism 7-21, output shaft 7-22, rack and pinion drive mechanism 7-23, deep groove ball bearing 7-24, gear teeth
Strip transmission mechanism 7-3, air pressure rollback device 8, hard alloy circular knife frock 9, ball rail plate 10, screw micrometer
11, ring 12, connection end 13, size self adaptation and grinding status stabilizing mechanism 13-1, matrix 13-2, screw are embraced in linkage
13-3, compensating squeeze head 13-31, alloy pressure head 13-32, headless screw 13-33, spring 13-4, jointing holes 14, workpiece
15, bowl-type skive 16, carbide wafer 17, frock plug.
Detailed description of the invention
As shown in Fig. 1-Fig. 7, the present invention is a kind of grinding machine with on-line measurement function, and it includes frame 1, controls
The wheel grinding mechanism for fixing the chuck 3 of workpiece 14, Grinder bench 4 and upper setting thereof arranged in system 2, frame 1
5, on-line measurement system 6, driving wheel grinding mechanism and the constant force griding system 7 of on-line measurement system action；Control system is even
Connect control wheel grinding mechanism, on-line measurement system, constant force griding system；Wheel grinding mechanism 5 include skive 5-1,
Grinding wheel spindle and connection drive the electric machine 5-2 that grinding wheel spindle rotates, and chuck is fixed with hard alloy circular knife frock 8.
Described on-line measurement system 6 uses point contact type to synchronize on-line measurement mode, including servo-control system 6-1, sets
Put the on-line measurement supporting mechanism 6-2 on Grinder bench, on-line measurement chi 6-3, the measurement process of on-line measurement chi with add
Work process real-time synchronization, when i.e. measuring, it is not necessary to shuts down detection；Described constant force griding system 7 includes servomotor 7-1, synchronization
The gentle unloading device 7-3 that pushes back of transmission mechanism 7-2, the function of air pressure rollback device has 2: 1, by air pressure valve to pneumatic circuit
Control action, produces the feeding resistance of Grinder bench horizontal direction, thus controls the horizontal movement velocity of Grinder bench；2、
Effect by either simplex pneumatic cylinder, it is achieved the work of workbench is return, to prepare the grinding of lower 1 workpiece.Described servo
Motor 7-1 is permanent torque servomotor, and permanent torque servomotor is converted to the constant of workbench through synchronous transmission mechanism transmission
Centripetal force, makes wheel grinding mechanism that workpiece end face is carried out grinding, and in whole grinding process, active force between the two is constant
Constant, when, after the size being ground to regulation, on-line measurement system sends signal, and workbench feed-disabling, at the electricity of control system
Device controls under the control of device, and air pressure rollback device realizes the horizontal operation of workbench and returns, after arriving the position of regulation, and work
Platform stop motion, workman takes off workpiece, completes the processing of a workpiece；If the circular knife diameter of processing changes, pass through
The selection switch that regulation and control system is arranged, selects correspondingly sized moment.By the electrical control gear of control system,
According to the size of circular knife, the size of regulation grinding force, thus expand the grinding scope of this special purpose grinder.By regulation grinding
The size of power, it is possible to achieve to operations such as the corase grind of workpiece, fine grinding, tarry matters.
Described synchronous transmission mechanism 7-2 uses synchronous belt drive mechanism, and synchronous transmission mechanism includes: drive and transmission skin
Band, is provided with double wedge on the surface of drive, is provided with the groove engaged with double wedge on the belt.The output of synchronous belt drive mechanism
Axle 7-21 connect have rack and pinion drive mechanism 7-22, output shaft by deep groove ball bearing 7-23 as supporting, Grinder bench
Bottom is provided with the ball rail plate 9 being connected transmission with rack and pinion drive mechanism 7-24.Its total transmission efficiency calculates:
Determine that the efficiency of drive mechanism at different levels is as follows through looking into " the efficacy probability value of machine driving and friction pair ":
Toothed belt transmission: η band=0.97
Deep groove ball bearing: η bearing=0.98
Rack pinion: η tooth=0.97
Ball sliding bearing: η sliding=0.98
Then, the overall mechanical efficiency of this drive mechanism is:
η is total=sliding=0.97 × 0.98 × 0.97 × 0.98=0.903 of η band η bearing η tooth η.
Described on-line measurement chi 6-3 includes dip stick 6-31, the measuring probe 6-32 being arranged on dip stick end and driving
The driving cylinder 6-33 that dip stick is displaced in the horizontal direction in, measuring probe measures component, the axial chi of detection object as point cantact
Very little variable quantity；Dip stick is outside equipped with screw micrometer 10, and the displacement stroke of dip stick is limited by screw micrometer.Measure
The rear sleeve of chi is provided with linkage and embraces ring 11, and the piston rod front end of driving cylinder is provided with connection end 12, this connection end and linkage
Embrace ring to connect.
On-line measurement supporting mechanism 6-2 includes fore bearing supporting 6-21, the rear bearing supporting 6-22 corresponding with dip stick, mill
Bed workbench dip stick is supported by fore bearing, rear bearing support movable is arranged on Grinder bench, and driving cylinder promotes to be measured
Chi produces displacement along Grinder bench horizontal direction, thus promotes measuring probe to produce surface with measured workpiece and contact, it is achieved survey
Amount process.
Further, the front end of described on-line measurement chi is provided with size self adaptation and grinding status stabilizing mechanism 13, chi
The bullet that very little self adaptation and grinding status stabilizing mechanism are arranged in including matrix 13-1 and three screw 13-2 of upper setting thereof, screw
Property pressure head 13-3, matrix is provided with jointing holes 13-4 corresponding with on-line measurement chi, can be secured it within by Outer screw
The front end of line dip stick.Described compensating squeeze head 13-3 includes the headless screw 13-that alloy pressure head 13-31 is threadeded with screw
32, the spring 13-33 being connected between alloy pressure head and headless screw, one end of alloy pressure head extends outward through screw, nothing
Head screw is by spring compression alloy pressure head, and each point of application alloy pressure head on matrix directly contacts with workpiece end face,
Thus ensure that workpiece is in stable grinding status in grinding process.
Further, servo-control system 6-1 includes that the servo control mechanism 6-11 being connected with servomotor, position signalling process
Module 6-12, position signalling processing module is connected with servo control mechanism；Position signalling processing module is obtained by measuring probe and work
The physical location of the contact surface of part measures signal, and it is compared with target position signal, it may be judged whether processing puts in place, if
Undressed putting in place, send signal and send servo control mechanism to, servo control mechanism, according to the undressed signal that puts in place, sends constant force voltage letter
Number give servo motor device, after servo motor device accepts constant force voltage signal, drive Grinder bench feeding processing；So follow
Ring, until workpiece is ground to target size, side stops processing.
Further, described servomotor is inertia motor TSB13102A, and on servomotor, connection has matched
Servo-driver TSTA30C.Described air pressure rollback device includes: power set, pipeline, control device and executive component, described
Power set are used for being converted to the mechanical energy of prime mover the pressure energy of working media；Described pipeline is connected to power set and holds
Between units, serve as the runner of working media；Described control device such as solenoid directional control valve, choke valve etc. is arranged on pipeline,
It is used for controlling the flow direction of working media, pressure and flow；Pipeline is provided with working media storage bin and working media mistake
Filter；Executive component is used for the pressure of working media can be converted to mechanical energy, power output and fortune under the effect of working media
Dynamic, to order about working table movement, such as the either simplex cylinder of air pressure rollback device.Described working media is air, described power set
For air compressor machine, described executive component is cylinder.It should be noted that working media can also use hydraulic oil, described power fills
Being set to hydraulic press, described executive component is hydraulic cylinder.
The present invention compared with prior art, 1, use point contact type on-line synchronous metering system, the grinding process to workpiece
In axial dimension physical quantity carry out real-time online measuring, measurement process have the most controlled, certainty of measurement is high, good stability
Feature.
2, the present invention is directed to the machine tool drive deformation of chain caused unstable because of grinding and feeding power in existing grinding
Phenomenon, and for the permanent displacement feeding mode by force used in numerically control grinder design, use the design concept of " constant force griding ", will
Grinding and feeding power is constant constant by unstable specification of variables, makes the deformation of machine tool drive chain be in steady statue and adds working medium
Measuring: compared with hand feed, use constant force feeding system to be processed, crudy is improved significantly；Efficiency is high: use
Constant force griding system carries out constant force processing, and production efficiency can improve about 2 times；Simple in construction: native system is installed at general-purpose grinder
On realize constant force feeding, simple in construction；Easy to operate: according to the diameter of circular knife, the selection in control system is switched and is transferred to
Correspondingly sized moment.
Moreover, it is noted that the present invention has been firstly introduced adaptive stabilizing mechanism in on-line measurement chi, with the machine
As a example by the carbide wafer that bed is processed, the problem that traditional lathe exists following needs solution:
According to user's requirement, lathe needs the outside dimension range spans of the carbide wafer of processing to be 25-120mm,
Automatic machine tool design is required to adapt to the excursion of this processing dimension；
Traditional lathe is that the half fine ginding processing as carbide wafer is used.Owing to using plain grinding technique not reach
The surface smoothness needed, it is necessary to use cross grinding mode could meet surface quality requirements.When bowl-type skive 15
Carbide wafer 16 is carried out cross grinding, is that recruitment cored rod 17 carries out centralized positioning, required during bowl-type wheel grinding
Workpiece centre, as shown in Figure 8.
This workpiece centre grinding process and carbide wafer periphery unfixed floating grinding method excessively, at workpiece
Under the effect with axially loaded of deadweight, causing workpiece position in grinding process is a certain degree of fluctuation, thus impact is hard
The processing quality of matter alloy disk.
Above 2 problems, are addressed in the design of this lathe.
As it is shown in figure 9, from carbide wafer grinding force analysis, carbide wafer is at grinding process axle
To direction stress Fn ', this responsive to axial force, on disk, for unilateral stress, causes grinding status unstable, this in order to improve
Unilateral force structure, can increase stress F at the symmetrical side at the center of mistake, makes stability under loading on disk, as shown in Figure 10, increases new
Increasing stress point and can improve the force structure of carbide wafer, the grinding status making disk is stable.But for hard alloy
The outside dimension of disk, at 25-120mm range changing, only cannot meet requirement by increase single-point, need to design 2 even 3 points
Newly-increased force structure can make grinding status stable.
In carbide wafer 25-120mm specification limit, within field test, 40mm size, specification, does not increases
Stress point, its grinding status is stable, reliable product quality, therefore can need not increase stress point.
For the disk of 40-120mm size range, need to increase stress point and make its grinding status stable.Advise in this size
In lattice, the full-size of the internal diameter of disk is Dmax=20mm, and external diameter minimum dimension is dmin=40mm, the full-size of external diameter
For dmax=120mm, the maximum gauge of the bowl-type emery wheel that user is used is dsmax=150mm, as shown in Figure 10, according to this 4
Individual dimension limit, can carry out the distribution design of stress point.
As shown in figure 11.In figure, dash area is minimum stress area determined by carbide wafer, nearest from emery wheel
Stress 2 point (A, B) must be in this region, the 3rd point (C) is dmax=120mm near the full-size of external diameter.
According to the design analysis to stress point, design carbide wafer size self adaptation and grinding status stablizes machine
Structure, as shown in Figure 5 and Figure 6.This mechanism uses aluminium alloy as matrix, the use hard alloy pressure head of each point of application and disk
Directly contact；Use grub screw holddown spring to produce pressure compaction alloy pressure head, be that alloy pressure head produces effective pressure
Defeat carbide wafer processed, thus ensure that carbide wafer is guaranteed at stable grinding status in grinding process.
Above-described is only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make some deformation and improvement, these broadly fall into the present invention
Protection domain.
Claims (10)
1. a grinding machine with on-line measurement function, it is characterised in that it includes setting in frame, control system, frame
Put for fixing the wheel grinding mechanism of the chuck of workpiece, Grinder bench and upper setting thereof, on-line measurement system, driving sand
Wheel grinding mechanism and the constant force griding system of on-line measurement system action；Control system connects and controls wheel grinding mechanism, online
Measurement system, constant force griding system；
Described on-line measurement system uses point contact type to synchronize on-line measurement mode, including servo-control system, is arranged on grinding machine
On-line measurement supporting mechanism on workbench, on-line measurement chi, the measurement process of on-line measurement chi and course of processing real-time synchronization；
Described constant force griding system includes the gentle unloading device that pushes back of servomotor, synchronous transmission mechanism, and described servomotor is permanent
Torque servo motor, permanent torque servomotor is constantly fed power through what synchronous transmission mechanism transmission was converted to workbench, makes sand
Wheel grinding mechanism carries out grinding to workpiece end face, when, after the size being ground to regulation, on-line measurement system sends signal, workbench
Feed-disabling, under control of the control system, air pressure rollback device realizes the horizontal operation of workbench and returns, and arrives the position of regulation
Postponing, workbench stop motion, workman takes off workpiece, completes the processing of a workpiece.
A kind of grinding machine with on-line measurement function the most according to claim 1, it is characterised in that described online survey
Gage includes dip stick, the measuring probe being arranged on dip stick end and the driving cylinder driving dip stick to be displaced in the horizontal direction in,
Measuring probe measures component, the axial dimension variable quantity of detection object as point cantact；
On-line measurement supporting mechanism includes that the fore bearing corresponding with dip stick supports, rear bearing supports, Grinder bench dip stick
Supported by fore bearing, rear bearing support movable is arranged on Grinder bench, and driving cylinder promotes dip stick along Grinder bench
Horizontal direction produces displacement.
A kind of grinding machine with on-line measurement function the most according to claim 1 and 2, it is characterised in that described
The front end of line dip stick is provided with size self adaptation and grinding status stabilizing mechanism, size self adaptation and grinding status stabilizing mechanism
Including at least three screw, the interior compensating squeeze head arranged of screw of matrix and upper setting thereof, matrix is provided with and on-line measurement chi
Corresponding jointing holes, can secure it within the front end of on-line measurement chi by Outer screw.
A kind of grinding machine with on-line measurement function the most according to claim 3, it is characterised in that described elastic pressure
Head includes the headless screw that alloy pressure head is threadeded, the spring being connected between alloy pressure head and headless screw with screw, closes
One end of gold pressure head extends outward through screw, and headless screw passes through spring compression alloy pressure head.
A kind of grinding machine with on-line measurement function the most according to claim 1, it is characterised in that SERVO CONTROL system
System includes servo control mechanism, the position signalling processing module being connected with servomotor, and position signalling processing module is with servo control mechanism even
Connect；Position signalling processing module obtains the physical location with the contact surface of workpiece by measuring probe and measures signal, and by its with
Target position signal compares, it may be judged whether processing puts in place, puts in place if undressed, sends signal and send servo control mechanism to, watch
Take mechanism according to the undressed signal that puts in place, send constant force voltage signal and accept constant force to servo motor device, servo motor device
After voltage signal, drive Grinder bench feeding processing.
A kind of grinding machine with on-line measurement function the most according to claim 2, it is characterised in that dip stick peripheral hardware
Being equipped with screw micrometer, the displacement stroke of dip stick is limited by screw micrometer.
A kind of grinding machine with on-line measurement function the most according to claim 2, it is characterised in that described dip stick
Rear sleeve be provided with linkage and embrace a ring, the piston rod front end of driving cylinder is provided with connection end, and this connection end embraces ring even with linkage
Connect.
A kind of grinding machine with on-line measurement function the most according to claim 1, it is characterised in that described servo electricity
Machine is inertia motor TSB13102A, and connecting on servomotor has matched servo-driver TSTA30C；Synchronize transmission
Mechanism includes: drive and driving belt, is provided with double wedge on the surface of drive, is provided with engage with double wedge recessed on the belt
Groove.
A kind of grinding machine with on-line measurement function the most according to claim 1, it is characterised in that described air pressure returns
Unloading device includes: power set, pipeline, control device and executive component,
Described power set are used for being converted to the mechanical energy of prime mover the pressure energy of working media；
Described pipeline is connected between power set and executive component, serves as the runner of working media；
Described control device is arranged on pipeline, is used for controlling the flow direction of working media, pressure and flow；Pipeline sets
There are working media storage bin and working media filter；
Described executive component be used for the pressure of working media can be converted to mechanical energy, under the effect of working media power output and
Motion, to order about working table movement.
A kind of grinding machine with on-line measurement function the most according to claim 9, it is characterised in that described work
Medium is air, and described power set are air compressor machine, and described executive component is cylinder；Or,
Described working media is hydraulic oil, and described power set are hydraulic press, and described executive component is hydraulic cylinder.
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