CN109249315A - A kind of thermoelectric cooling grinding wheel and its micro water lubrication accurate grinding system of autocondensation - Google Patents
A kind of thermoelectric cooling grinding wheel and its micro water lubrication accurate grinding system of autocondensation Download PDFInfo
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- CN109249315A CN109249315A CN201811341002.1A CN201811341002A CN109249315A CN 109249315 A CN109249315 A CN 109249315A CN 201811341002 A CN201811341002 A CN 201811341002A CN 109249315 A CN109249315 A CN 109249315A
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- ring
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- thermoelectric cooling
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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
- B24B49/14—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 taking regard of the temperature during grinding
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention discloses a kind of thermoelectric cooling grinding wheel and its micro water lubrication accurate grinding systems of autocondensation, including toroidal wheel grinding layer, refrigerating plant and circulation heat radiator；The grinding layer of grinding wheel carries out grinding to workpiece and generates heat when work；Refrigerating part of the present invention uses thermoelectric module, the heat transfer that the thermoelectric module after energization generates when utilizing heat pump principle for grinding to hot face, and the heat assembled on hot face is taken away by cycle cooling system.It is acted on simultaneously using the cryogenic condensation of wheel face, micro condensed water is carried to grinding area, play the role of micro lubricating, realize the micro water lubrication grinding of autocondensation.This grinding wheel and grinding system are mountable applied to various types of grinding machines including surface grinding machine, cylindrical grinder and curve surface grinder etc..
Description
Technical field
The invention belongs to accurate grinding fields, are related to a kind of grinding wheel and packet that internal refrigeration storage is carried out using thermoelectric module
Include the micro water lubrication accurate grinding system of autocondensation of the grinding wheel.
Background technique
During wheel grinding, the abrasive grain and bonding agent of wheel face to the scratching of workpiece material and plough plough in grinding area
Effect generates a large amount of grinding heat, and grinding heat can change the surface quality and mechanical property of machined material, or even cause material
The burn on surface；Accelerate abrasion of grinding wheel, influences the service life of grinding wheel；So that grinding wheel and workpiece is generated thermal deformation, influences plane or various
Several very little precision or form accuracy of curved surface precision component, it is therefore desirable to cool down to grinding area.Most common cooling side
Method is directly injected near grinding area using grinding fluid, using grinding fluid take away heat arrived for grinding wheel and workpiece cooling
Purpose.However when this high speed rotation due to grinding wheel airflow field opposite grinding cut the inhibition of liquid, grinding fluid can not be effectively
It is cooling to grinding area, it is difficult to critically to control temperature when wheel grinding, hydrodynamic acts on half quarter sawing that also will affect grinding wheel
It is deep.Being constantly progressive and be gradually increased with consciousness of the mankind to environmental protection with society, grinding fluid to the pollution of environment also gradually
It attract attention.Green Grinding is a kind of grinding side for comprehensively considering optimizing network resource utilization and environmental impact minimization
Formula, presently, there are Green Grinding mode have the cooling grinding technique of dry type grinding technique, micro lubricating grinding technique, liquid nitrogen,
Gas jet cooling technology and solid lubrication technology.Wherein, dry type grinding technique is not due to using grinding fluid, it is possible to complete
It totally disappeared except grinding fluid bring negatively affects, but the cooling, lubrication and chip removal problem in grinding process are difficult to solve.Micro profit
Sliding grinding technique can effectively lubricate grinding wheel with the contact surface of abrasive dust and grinding wheel and workpiece, to reduce friction and prevent
Abrasive dust adheres on grinding wheel, is conducive to the grinding capacity for improving grinding wheel, prolongs the service life, improvement grinding surface quality, but mesh
Preceding micro lubricating mainly uses various inorganic cutting oils, and disperse is unfavorable to the health of operator in air.Liquid nitrogen is cooling
Grinding technique as grinding fluid is directly injected to processing district using liquid nitrogen, is conducive to the processing performance of raising grinding wheel, and can be with
Grinding area temperature is significantly reduced, but needs matched liquid nitrogen cooling recirculation system, system structure is more complex.Gas jet cools down skill
Art has the advantages that dry abrasive cutting, but the big chip of gas pressure is difficult to collect, and gas jet noise is difficult to solve.Solid profit
Sliding technology can effectively reduce the coefficient of friction of grinding skin, reduce the adhesion wear of abrasive grain and workpiece, and then reduce grinding heat
It generates, inhibits scorch, but its greenhouse cooling ability is limited.Grinding fluid is difficult to re-use after use, in equipment
Upper accumulation can generate spot, and waste and old grinding fluid can cause damages to environment, and harmless treatment cost is relatively high.In addition, grinding
Volatile chemical substance, which can generate common antirust agent triethanolamine in irritative gas, such as grinding fluid, in liquid can stimulate eye
Eyeball, hexamethylenetetramine etc. can cause dermatitis and eczema when contacting skin, these all can seriously threaten equipment operator
Physical and mental health.In addition, in the grinding of some materials, such as resin-based carbon fiber composite, because of common grinding fluid
It will cause material mechanical performance decline, so common grinding fluid cannot be used in process.
Summary of the invention
In order to realize effective control of grinding area temperature in grinding process, and solve the problems, such as grinding fluid environmental pollution,
The present invention proposes a kind of thermoelectric cooling grinding wheel and the micro water lubrication accurate grinding system of autocondensation including the grinding wheel, the present invention are
It is a kind of that internal cooling and cooling to grinding area by heat transfer realization system being carried out to grinding wheel using thermoelectric cooling principle.This
Invention the technical solution adopted is as follows:
A kind of thermoelectric cooling grinding wheel, including toroidal wheel grinding layer, refrigerating plant and circulation heat radiator；The annular
Wheel grinding layer is fixed to and is mounted on the wheel hub of refrigerating plant；The refrigerating plant uses thermoelectric module, the heat
The huyashi-chuuka (cold chinese-style noodles) of electric cooling piece is contacted with toroidal wheel grinding layer, and the heat of grinding area is transmitted to grinding wheel mill first in thermo-conducting manner
It cuts in layer inner ring, then is transmitted on the huyashi-chuuka (cold chinese-style noodles) of thermoelectric module, the hot face of thermoelectric module and the coolant liquid of circulation heat radiator
Contact, is taken away heat by the flowing of coolant liquid.
Further, the circulation heat radiator includes the thermometric hot spot of the huyashi-chuuka (cold chinese-style noodles) and hot face positioned at thermoelectric cooling ring
Even, temperature control system and electro-hydraulic combination slip ring.
The thermoelectric cooling ring is connected by conducting wire with the electro-hydraulic rotor wire leading-out terminal for combining slip ring, and electro-hydraulic combination is slided
The stator conductor leading-out terminal of ring is connected with power supply, mainly powers for the thermoelectric module and thermocouple of thermoelectric cooling ring, and pass
The signal of defeated thermocouple；The rotor of electro-hydraulic combination slip ring is fixed on grinding wheel wheel hub, is rotated with grinding wheel, stator is fixed on wheel guard
On remain stationary.
Further, the thermoelectric module includes multiple, and multiple thermoelectric modules are serially connected to form a ring
The thermoelectric cooling ring of shape, the external annular surface of the thermoelectric cooling ring are huyashi-chuuka (cold chinese-style noodles), and inner ring surface is hot face；Outside thermoelectric cooling ring
Ring surface is contacted with the inner ring of wheel grinding device cools down to wheel grinding part, and reachable -75 DEG C of the temperature of huyashi-chuuka (cold chinese-style noodles).
Further, the thermometric thermocouple can carry out real-time monitoring to temperature.Then, it can be learnt according to calculating
Grinding wheel huyashi-chuuka (cold chinese-style noodles) and hot face lead to the outer diameter after its thermal expansion or contraction, by the temperature of control refrigeration work consumption and recirculated water come accurate
Grinding wheel is controlled in the stroke of radial direction, and then precision controls grinding wheel radius cutting-in.
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Further, the toroidal wheel grinding layer is cyclic structure, and the bonding agent in grinding layer uses thermal coefficient
Higher metallic bond or vitrified bond；Annular grinding layer is bonded by bonding agent and metallic matrix outer ring, metallic matrix
Be joined with bolts on wheel hub, annular grinding layer outer surface is contacted with workpiece surface in grinding process, ring inner surface and
The huyashi-chuuka (cold chinese-style noodles) of thermoelectric cooling ring contacts.
Further, the thermoelectric cooling ring inner ring is mounted in wheel hub, and thermoelectric cooling ring wheel hub has cavity structure,
With cooling water circulatory flow, the huyashi-chuuka (cold chinese-style noodles) of thermoelectric module is towards toroidal wheel grinding layer, and hot face is towards cooling water circulatory flow.
Further, the grinding wheel wheel hub is made of main body and sealing cover, and the sealing cover is separately mounted to wheel hub
Two sides, be tightly connected between wheel hub, on the sealing cover be equipped with coolant liquid water inlet and coolant liquid water outlet.
The maintenance maintenance of thermoelectric refrigerating system, temperature control system and coolant liquid circulatory flow is convenient in the design of sealing cover,
Junction is sealed using sealing ring for water proof and dust proof.
Further, the coolant liquid water inlet and coolant liquid water outlet lead to electro-hydraulic slip-ring rotor end two of combining respectively
Road liquid conduits be connected, electro-hydraulic two access liquid conduits of combination slip ring stator terminal respectively with apparatus for supplying cool water and cooling water tank
Body connection, realizes the supply and discharge of cooling water；
Cooling water from apparatus for supplying cool water by cooling water pipeline flow out, by cooling water intake flow into sealing cover wheel with
In the cavity that hub is formed；Then enter cooling water pipeline from cooling water outlet outflow and flow into cooling water body case.Further, sharp
Clamping is carried out to grinding wheel main body with grinding wheel chuck, using attaching nut by electro-hydraulic combination slip-ring rotor and precision grinder grinding wheel spindle
Connection.
Further, the grinding wheel of invention is mounted on grinding machine spindle, sets refrigeration work consumption and circulating water temperature, main shaft rotation
Turn to open thermoelectric refrigerating system and the constant temp cooling water circulatory system after starting, after wheel face temperature is stablized, to reach lower than room temperature
100 degree of low temperature is ground workpiece.
Further, grinding wheel of the invention is by mills such as grinding wheel speed, feed speed and the grinding wheel radius cutting-ins of grinding machine setting
Parameter is cut to be ground workpiece.
A kind of grinding system provided by the invention, including mentioned-above thermoelectric cooling grinding wheel, the thermoelectric cooling sand
Wheel is installed on the main shaft of precision grinder, the rotor and grinding wheel synchronous rotary of electro-hydraulic combination slip ring, and electro-hydraulic combination slip ring stator is solid
It is scheduled on wheel guard, remain stationary.
Further, using the opposite of the local air around small-sized humidifier and humidity sensor active control grinding wheel
Humidity makes the vapor rapid condensation in air form frost or small water droplet to wheel face using the low temperature of wheel face, and
Minor amount of water is brought into grinding area by grinding wheel rotary motion, plays the role of micro lubricating, realizes the micro water lubrication grinding of autocondensation.
The grinding layer of medium plain emery wheel of the present invention is directly contacted with workpiece at work, is carried out grinding and is generated heat；System of the present invention
Cold part uses thermoelectric module, and the heat generated when being ground is transferred to hot face, the heat assembled on hot face by thermoelectric module
It is taken away by cycle cooling system.
Circulation cooling part of the present invention carries out cooling water supply and discharge to grinding wheel internal cavities using electro-hydraulic combination slip ring.
The inlet and outlet of grinding wheel front end face are connected with the electro-hydraulic two access liquid conduits of slip-ring rotor end that combine respectively, electro-hydraulic combination
Two access liquid conduits of slip ring stator terminal are connect with apparatus for supplying cool water and cooling water cabinet respectively, realize the supply of cooling water
And discharge.
Beneficial effects of the present invention are as follows:
The grinding wheel that the present invention designs carries out internal cooling to its ontology using thermoelectric module, improves grinding with can dramatically adds
Cooling effect during work, improve because grinding area temperature it is excessively high caused by workpiece surface quality problem, increase grinding wheel use the longevity
Life, it is more significant that grinding method biggish for contact arc length compares traditional cast-type cooling effect.
Grinding wheel proposed by the present invention can make the cold and hot expansion of grinding wheel be able to essence by control refrigeration work consumption and cooling water temperature
Close control reduces the influence because of grinding wheel part Thermal Distortion on Machining Precision, to guarantee to guarantee accurate grinding wheel radius cutting-in
The dimensional accuracy and form accuracy of plane and various curved surface accurate grindings are of great significance.
The internal refrigeration storage method that the present invention uses only cools down grinding wheel, avoids low temperature liquid nitrogen or cold air cast-type is cold
But influence of the mode to entire processing processing temperature, advantageously reducing influences processing essence because temperature change leads to machine tool variety
Degree.
The present invention utilizes the low temperature of wheel face, wet using the local air around small-sized humidifier active control grinding wheel
Degree makes the vapor rapid condensation in air form frost to low temperature wheel face, and passes through grinding wheel rotary motion for minor amount of water
It brings grinding area into, plays the role of micro lubricating, do not use electrodeless cutting oil, realize the micro water lubrication grinding of autocondensation, it can
Grinding force and abrasion of grinding wheel are reduced, surface quality is improved.
The accurate grinding grinding wheel that the present invention designs does not need to avoid grinding fluid pair using grinding fluid in grinding process
The pollution of environment and harm to human body, save the cost of grinding fluid.Wherein grinding fluid includes grinding fluid to the harm of human body
Harm of the interior volatile hazardous substances to human respiratory and skin, grinding fluid splash in skin and eyes in operation
Harm.
This grinding wheel and grinding system are mountable applied to various including surface grinding machine, cylindrical grinder and curve surface grinder etc.
The grinding machine of type.
At work, the cooling water used can be recycled for a long time the present invention in cooling-water machine, operation and processing cost
It is low.
The annular abrasive layer for the grinding wheel that the present invention designs, metallic matrix are connect by bolt with hub portion, abrasive material
It can replace as needed, it is easy-to-use, it is at low cost.
Detailed description of the invention
Figure of description is constituted part of this application to be used to provide further understanding of the present application, the signal of the application
Property embodiment and its explanation for explaining the application, do not constitute an undue limitation on the present application.
Fig. 1, Fig. 2 are thermoelectric cooling grinding system and tool scheme of installation；
Fig. 3, Fig. 4 are thermoelectric cooling grinding wheels system schematic diagram；
Fig. 5, Fig. 6 are thermoelectric cooling grinding wheel main part；
Fig. 7 is electro-hydraulic each access schematic diagram of combination slip ring；
Fig. 8, Fig. 9 are thermoelectric cooling grinding wheel internal structure；
Figure 10 is annular thermoelectricity cold core structure；
Figure 11 is that toroidal wheel grinding layer and becket bond schematic diagram；
Figure 12 is grinding wheel mounted inside relation schematic diagram；
Figure 13 is circulation cooling partial schematic diagram；
Figure 14 is that thermoelectric module carries out internal refrigeration storage and the micro water lubrication Principle of Grinding and Cutting figure of autocondensation to abrasive grinding wheel；
Wherein, 1, wheel guard；1-a fixed frame；2, attaching nut；3, grinding wheel chuck front end；4, electro-hydraulic combination slip ring；4-a,
The first access of stator terminal；4-b, the first access of rotor-end；4-c, rotor-end alternate path；4-d, stator terminal alternate path；4-e,
Rotor-end conducting wire；4-f, stator terminal conducting wire；5, drive end bearing bracket；5-a, coolant liquid water inlet；5-b, coolant liquid water outlet；6, bolt；
7, preceding Sealing shield ring；8, toroidal wheel grinding layer；9, rear Sealing shield ring；10, rear end cap；11, grinding wheel chuck rear end；12, grinding machine
Main shaft；13, thermoelectric cooling ring；13-a, thermoelectric module；13-b, thermocouple resistance；14, grinding wheel hub support；15, cooling water
Body pump；16, cooling water body case；17, cooling water pipeline；18, abrasive grinding wheel；19, grinding workpiece；20, thermoelectric module is cold
Face；21, the hot face of thermoelectric module；22, recirculated cooling water；The frost of 23 condensations or small water droplet.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination；
As background technique is introduced, the method for the most frequently used grinding wheel cooling is directly sprayed using grinding fluid in the prior art
It is mapped to wheel face, taking away heat using grinding fluid arrived the purpose to cool down for grinding wheel, however as being constantly progressive for society
It is gradually increased with consciousness of the mankind to environmental protection, grinding fluid is also gradually subject to the people's attention the pollution of environment.
Grinding fluid is difficult to re-use after use, and accumulation can generate spot in equipment, and waste and old grinding fluid can be to ring
Border causes damages, and harmless treatment cost is relatively high.In addition, chemical substance volatile in grinding fluid can generate stimulation stimulation
Property gas, such as grinding fluid in meeting when eyes, hexamethylenetetramine etc. can be stimulated to contact skin of common antirust agent triethanolamine
Cause dermatitis and eczema, this all can seriously threaten the physical and mental health of equipment operator.In addition, in the grinding of some materials
In processing, such as resin-based carbon fiber composite, decline because common grinding fluid will cause material mechanical performance, so cannot make
With grinding fluid, it is necessary to using dry grinding cutting method.It there is no and freezed to accurate grinding with grinding wheel using thermoelectric module at present
Grinding wheel and accurate grinding system.
In Grinding Process, carrying out the avoidable grinding fluid of internal refrigeration storage to abrasive grinding wheel using thermoelectric module makes
With, and cooling effect is significant, forms minor amount of water to grinding process in wheel face rapid condensation using the vapor in air and moistens
Sliding effect, meets the theory of green manufacturing.It there is no the sand to be freezed to accurate grinding with grinding wheel using thermoelectric module at present
Wheel and accurate grinding system and the method for realizing the micro water lubrication grinding of autocondensation using the system.
The present invention is a kind of internal to grinding wheel progress cooling using thermoelectric module, and makes to be ground by way of heat transfer
Generated heat is transmitted on the huyashi-chuuka (cold chinese-style noodles) of thermoelectric module, is dropped using cooling water recirculation system to the hot face of thermoelectric module
Temperature makes wheel grinding layer keep low so that heat caused by during making wheel grinding is passed by water circulation system
Grinding area temperature is effectively reduced in temperature.Thermoelectric module is a kind of heat pump, when direct current passes through two kinds of different semiconductor material series connection
At galvanic couple when, the both ends of galvanic couple can absorb respectively heat and release heat, wherein absorb heat one end be referred to as huyashi-chuuka (cold chinese-style noodles),
Exothermic one end is referred to as hot face, so as to realize the purpose of refrigeration.Heat caused by wheel grinding part passes through heat
Pump principle is transmitted on the huyashi-chuuka (cold chinese-style noodles) of thermoelectric module, is cooled down using cooling water recirculation system to the hot face of thermoelectric module, from
And pass generated heat during wheel grinding by water circulation system, so that wheel grinding layer is kept low temperature, has
Effect reduces grinding area temperature.Meanwhile using the low temperature of wheel face, using the office around small-sized humidifier active control grinding wheel
Portion's air humidity makes the vapor rapid condensation in air form frost to wheel face, and will be micro- by grinding wheel rotary motion
Amount water brings grinding area into, plays the role of micro lubricating, realizes the micro water lubrication grinding of autocondensation, reduces grinding force and grinding wheel mill
Damage improves surface quality.Grinding wheel is critically controlled in the flexible of radial direction by the temperature of control refrigeration work consumption and recirculated water
Amount realizes the accurate control of the grinding wheel radius cutting-in as important grinding parameter, guarantees grinding accuracy, to plane and various curved surfaces
Accurate grinding processing be of great significance；Specifically, cold including grinding workpiece, abrasive grinding wheel, thermoelectric module, circulation
But system；
Principle such as Figure 14 is shown；18 pairs of grinding workpieces processings 19 of abrasive grinding wheel are processed, and thermoelectric module is being ground
The inside of grinding wheel.
When abrasive grinding wheel 18 processes workpiece 19, the abrasive grain and bonding agent of wheel face draw workpiece material in grinding area
It wipes and the effect of cultivated plough generates a large amount of grinding heat, increase abrasive grinding wheel temperature, thermoelectric module is inside abrasive grinding wheel, grinding
The heat of generation is transmitted on thermoelectric module huyashi-chuuka (cold chinese-style noodles) 20 by way of heat transfer, and the temperature of abrasive grinding wheel is reduced.
Electrothermal refrigeration piece huyashi-chuuka (cold chinese-style noodles) 20 is contacted with wheel grinding layer 18, after wheel face temperature is stablized, with -75 DEG C of low temperature pair
Workpiece is ground, and then using the local air humidity around small-sized humidifier active control grinding wheel, makes the water in air
Steam rapid condensation forms frost or small water droplet 23 to low temperature wheel face, and is brought into minor amount of water by grinding wheel rotary motion
Micro lubricating is played the role of in grinding area.
Hot 21 temperature of face of thermoelectric module increases, and the hot face 21 of thermoelectric module is contacted with cooling water 22, and cooling water 22 flows
Heat is taken away, reduces temperature, as shown in figure 14.
According to above-mentioned principle, a set of grinding wheel and its accurate grinding system without grinding fluid that the present invention designs, the design
It is that internal refrigeration storage is carried out to grinding wheel using thermoelectric module, specific design scheme is as follows:
As shown in Figure 1-Figure 11, the thermoelectric cooling grinding wheel that the present invention designs consists of three parts, respectively ring-shaped sand disc sharpener
Cut layer, refrigerating plant and circulation cooling and temprature control unit.
Toroidal wheel grinding layer of the present invention is directly contacted with workpiece when working, and is carried out grinding and is generated heat.
Refrigerating part of the present invention uses thermoelectric module, and the heat generated when being ground is transferred to hot face by thermoelectric module,
The heat assembled on hot face is taken away by cycle cooling system.
Circulation cooling part of the present invention carries out cooling water supply and discharge to grinding wheel internal cavities using electro-hydraulic combination slip ring.
The inlet and outlet of grinding wheel front end face are connected with the electro-hydraulic two access liquid conduits of slip-ring rotor end that combine respectively, electro-hydraulic combination
Two access liquid conduits of slip ring stator terminal are connect with coolant supply apparatus and coolant liquid cabinet respectively, realize the supply of cooling water
And discharge.
The grinding wheel that the present invention designs does not need to avoid dirt of the grinding fluid to environment using grinding fluid in grinding process
Dye and harm of the grinding fluid to human body, wherein grinding fluid to the harm of human body include in grinding fluid volatile hazardous substances to human body
The harm of breathing and skin, grinding fluid splash the harm in skin and eyes in operation.
The grinding layer 8 of grinding wheel of the invention is cyclic structure, and the bonding agent in grinding layer uses the higher gold of thermal coefficient
Belong to bonding agent or vitrified bond, annular grinding layer is bonded by bonding agent and metallic matrix outer ring, and metallic matrix is connected with bolt
It connects and is fixed on wheel hub, its external annular surface is contacted with workpiece surface in grinding process, ring inner surface and thermoelectric cooling ring 13
Huyashi-chuuka (cold chinese-style noodles) contact, realizes cooling, as shown in Figure 8 and Figure 9.
The present invention is using small-sized humidifier and 8 external annular surface of humidity sensor active control toroidal wheel grinding layer part
The relative humidity of air makes the vapor rapid condensation in air form frost to wheel face using the low temperature of wheel face
Or droplet, and minor amount of water into is brought in grinding area by grinding wheel rotary motion, play the role of micro lubricating, realizes that autocondensation is micro
Water lubrication grinding.
As shown in figure 11, the metallic matrix part of annular grinding layer 8 is the preceding Sealing shield ring 7 of metal material, annular grinding
Layer 8 is bonded by the preceding Sealing shield ring 7 of bonding agent and metal material, and preceding Sealing shield ring 7, which can be bolted, is fixed on wheel hub
On.
As shown in Figure 10, thermoelectric cooling ring 13 is the thermoelectric module 13-a of annular array, the outer ring of thermoelectric cooling ring 13
Surface is huyashi-chuuka (cold chinese-style noodles), and inner ring surface is hot face.
13 external annular surface of thermoelectric cooling ring is contacted with the inner ring of toroidal wheel grinding layer 8 drops toroidal wheel grinding layer
Temperature.The huyashi-chuuka (cold chinese-style noodles) of thermoelectric cooling ring 13 and hot face are equipped with 13-b thermocouple resistance, can carry out real-time monitoring to temperature.Then, according to meter
The outer diameter after grinding wheel huyashi-chuuka (cold chinese-style noodles) and hot face cause it to thermally expand or shrink can be learnt by calculating, and pass through control refrigeration work consumption and recirculated water
Temperature carrys out accurate control grinding wheel in the stroke of radial direction, and then precision controls grinding wheel radius cutting-in.
13 inner ring of thermoelectric cooling ring is equipped with grinding wheel hub support 14, the hot face of thermoelectric cooling ring and grinding wheel hub support 14
Contact, grinding wheel hub support 14 have cavity structure, and 14 two sides of grinding wheel hub support are equipped with drive end bearing bracket 5 and rear end cap 10.
Preceding Sealing shield ring 7 and rear Sealing shield ring 9 are sealed grinding wheel main body by bolt 6.
There are cooling water intake 5-a and cooling water outlet 5-b, cooling water water inlet on the drive end bearing bracket 5 of circulation cooling part
Mouth 5-a combines the first access 4-b connection of slip-ring rotor end with electro-hydraulic, and cooling water outlet 5-b combines slip-ring rotor end with electro-hydraulic
Alternate path 4-c connection, electro-hydraulic combination slip ring stator are fixed on wheel guard by 1-a fixed frame, the first access of stator terminal 4-a
It is connect respectively with apparatus for supplying cool water and cooling water cabinet with stator terminal alternate path 4-d, realizes supply and the row of coolant liquid
Out.
The rotor-end conducting wire 4-e of electro-hydraulic combination slip ring 4 is that thermoelectric module 13-a and thermocouple 13-b powers, and transmits heat
The even signal of point, the stator terminal conducting wire 4-f connection external power supply of electro-hydraulic combination slip ring 4.
The rotor of electro-hydraulic combination slip ring 4 is connected on grinding wheel spindle by attaching nut 2, the stator of electro-hydraulic combination slip ring 4
It is fixed on wheel guard 1 by fixed frame 1-a.
When grinding wheel rotates, the rotor of electro-hydraulic combination slip ring 4 is rotated with grinding wheel, and the stator of electro-hydraulic combination slip ring 4 is remain stationary.
Grinding wheel chuck rear end 11 and grinding wheel chuck front end 3 carry out clamping to grinding wheel main body, and are installed to precision grinder main shaft
On 12.
A kind of grinding wheels system provided by the invention, including mentioned-above thermoelectric cooling grinding wheel, the installation of thermoelectric cooling grinding wheel
It onto precision grinder, is rotated by grinding machine spindle 12, the rotor and grinding wheel synchronous rotary of electro-hydraulic combination slip ring 4, electro-hydraulic group
The stator for closing slip ring 4 is remain stationary.
Cooling water leads to cooled liquid pump 15 and flows out from cooling water body case 16, flows through cooling water pipeline 17 then by electro-hydraulic
The cooling water intake 5-a combined on the drive end bearing bracket 5 of slip ring 4 takes away inside grinding wheel into 14 internal cavity of grinding wheel hub support
Heat, and from drive end bearing bracket 5 cooling water outlet 5-b outflow, by it is electro-hydraulic combination slip ring 4 alternate path enter cooling
Waterpipe 17 flows back to cooling water body case 16.
Above-mentioned refrigerating method disclosed in the present invention applies also for other machining tool, including lathe tool, milling cutter, drill bit etc. and adds
Work tool.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of thermoelectric cooling grinding wheel, which is characterized in that including toroidal wheel grinding layer, refrigerating plant and circulation heat radiator；
The toroidal wheel grinding layer is fixed to and is mounted on the wheel hub of refrigerating plant；The refrigerating plant uses thermoelectric cooling
The huyashi-chuuka (cold chinese-style noodles) of piece, the thermoelectric module is contacted with toroidal wheel grinding layer, and the heat of grinding area is in thermo-conducting manner first
It is transmitted on wheel grinding layer inner ring surface, then is transmitted on the huyashi-chuuka (cold chinese-style noodles) of thermoelectric module, the hot face of thermoelectric module and circulation dissipate
The coolant liquid of thermal contacts, and is taken away heat by the flowing of coolant liquid.
2. a kind of thermoelectric cooling grinding wheel as described in claim 1, which is characterized in that the thermoelectric module include it is multiple,
Multiple thermoelectric modules are cascaded to form an annular thermoelectric cooling ring, and the external annular surface of the thermoelectric cooling ring is
Huyashi-chuuka (cold chinese-style noodles), inner ring surface are hot face；The outer surface of thermoelectric cooling ring is contacted with the inner ring of toroidal wheel grinding layer to wheel grinding portion
Divide and cools down.
3. a kind of thermoelectric cooling grinding wheel as claimed in claim 2, which is characterized in that the circulation heat radiator includes thermometric
Thermocouple, temperature control system and electro-hydraulic combination slip ring, the thermometric thermocouple be located at thermoelectric cooling ring huyashi-chuuka (cold chinese-style noodles) and hot face；
The thermoelectric cooling ring is connected by conducting wire with the electro-hydraulic rotor wire leading-out terminal for combining slip ring, the stator of electro-hydraulic combination slip ring
Conducting wire leading-out terminal is connected with power supply, and the rotor of electro-hydraulic combination slip ring is fixed on the wheel hub, rotates with grinding wheel, stator is fixed
It is remain stationary on wheel guard.
4. a kind of thermoelectric cooling grinding wheel as described in claim 1, which is characterized in that the toroidal wheel grinding layer is ring-type
Structure, the bonding agent in grinding layer use the higher metallic bond of thermal coefficient or vitrified bond；Annular grinding layer passes through
Bonding agent and metallic matrix outer ring bond, and metallic matrix is joined with bolts on wheel hub, annular grinding layer in grinding process
Outer surface is contacted with workpiece surface, and ring inner surface is contacted with the huyashi-chuuka (cold chinese-style noodles) of thermoelectric cooling ring.
5. a kind of thermoelectric cooling grinding wheel as claimed in claim 2, which is characterized in that the wheel hub is by main body and sealing cover group
At the sealing cover is separately mounted to the two sides of wheel hub, is tightly connected between wheel hub, is equipped on the sealing cover cold
But liquid water inlet and coolant liquid water outlet.
6. a kind of thermoelectric cooling grinding wheel as claimed in claim 5, which is characterized in that the cooling water intake and cooling water
Water outlet is connected with the electro-hydraulic two access liquid conduits of slip-ring rotor end that combine respectively, electro-hydraulic two access liquid of combination slip ring stator terminal
Conduit is connect with apparatus for supplying cool water and cooling water cabinet respectively, realizes the supply and discharge of cooling water.
7. a kind of thermoelectric cooling grinding wheel as claimed in claim 2, which is characterized in that the side of the thermoelectric cooling ring and wheel hub
Face is connect by preceding Sealing shield ring and rear Sealing shield ring with grinding wheel body seal.
8. a kind of grinding system, which is characterized in that including thermoelectric cooling grinding wheel as claimed in claim 1 to 7.
9. grinding system as claimed in claim 8, which is characterized in that grinding wheel chuck rear end and grinding wheel chuck front end are to grinding wheel master
Body carries out clamping, and is installed on precision grinder main shaft, is rotated by grinding machine spindle, the rotor and sand of electro-hydraulic combination slip ring
Synchronous rotary is taken turns, the stator of electro-hydraulic combination slip ring is remain stationary.
10. grinding system as claimed in claim 8, which is characterized in that actively using small-sized humidifier and humidity sensor
The relative humidity of local air around control grinding wheel makes the vapor rapid condensation in air using the low temperature of wheel face
Frost or small water droplet are formed to wheel face, and minor amount of water into is brought in grinding area by grinding wheel rotary motion, plays micro lubricating
The micro water lubrication grinding of autocondensation is realized in effect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811341002.1A CN109249315B (en) | 2018-11-12 | 2018-11-12 | A kind of thermoelectric cooling grinding wheel and its micro water lubrication accurate grinding system of autocondensation |
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| CN201811341002.1A CN109249315B (en) | 2018-11-12 | 2018-11-12 | A kind of thermoelectric cooling grinding wheel and its micro water lubrication accurate grinding system of autocondensation |
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| CN109249315B CN109249315B (en) | 2019-08-23 |
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| CN113351920A (en) * | 2021-05-18 | 2021-09-07 | 上海金兆节能科技有限公司 | Micro-lubricating milling device and working method |
| CN113714917A (en) * | 2021-10-23 | 2021-11-30 | 深圳市二砂深联有限公司 | Resin grinding wheel set for steel rail cutting and using method thereof |
| CN114473646A (en) * | 2022-02-22 | 2022-05-13 | 上海联净电子科技有限公司 | Heating roller hot grinding process and equipment |
| CN114871917A (en) * | 2022-04-29 | 2022-08-09 | 重庆猛荣机电有限公司 | Grinding machine with safety protection function |
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| CN114871917A (en) * | 2022-04-29 | 2022-08-09 | 重庆猛荣机电有限公司 | Grinding machine with safety protection function |
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| CN109249315B (en) | 2019-08-23 |
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