A kind of heat abstractor of high speed cutting tool and its heat dissipating method
Technical field
The present invention relates to machine tooling technical field, especially a kind of heat abstractor of high speed cutting tool and its radiating side
Method.
Background technology
During machine tooling, due to the high-speed friction of cutter and workpiece, substantial amounts of heat can be produced, in order to keep
The good cutting power of cutter and the cutting quality of workpiece, need to carry out radiating treatment to frictional heat.Wherein, middle promulgated by the State Council
Bright patent cn 102501132 b discloses a kind of spraying heat abstractor, is relatively advanced a kind of radiating dress in prior art
Put.But, in the machining of big depth, cooling cutting fluid is not easily accessible the cutwork of inside so that this spraying dissipates
The radiating effect of thermal is deteriorated, and the cutter interior chiller of prior art cannot provide enough radiatings to conduct effect
Rate is so that this technical problem annoyings machine tooling enterprise always.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of heat abstractor of high speed cutting tool and its heat dissipating method, energy
Enough solve the deficiencies in the prior art, effectively improve radiating effect during big deep cuts.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows.
A kind of heat abstractor of high speed cutting tool, including cutter body, is provided with cooling chamber, cutter in cutter body
The outside of body is provided with sprayer unit, is provided with the first cooling tube and the second cooling tube, the first cooling in described cooling chamber
Pipe is be arranged in parallel with the second cooling tube, and the first cooling tube is located at the outside of the second cooling tube, is filled with conduction oil in cooling chamber, cold
But chamber roof is provided with evaporation cavity, and the part body of the first cooling tube is located in evaporation cavity, and evaporation cavity is provided with
Several through holes, towards evaporation cavity, the first cooling tube sets towards on the direction of the second cooling tube the injection direction of sprayer unit
It is equipped with the first metal clips, the top of the first metal clips is connected with inner metal sleeve, the second cooling tube dorsad the first cooling tube
Second metal clips is provided with direction, the top of the second metal clips is connected with metal-coating, metal-coating is provided with logical
Groove, metal-coating is plugged on the outside of the second cooling tube, the top of metal-coating and the top slide of inner metal sleeve by groove
It is plugged in together, the bottom of through hole is arranged on the side wall of cutter body, and the lower section of through hole is connected with guiding gutter, the first cooling tube
With a frequency variable circulating pump is respectively arranged with the second cooling tube.
Preferably, the ratio of the internal diameter of described first cooling tube and the second cooling tube is 1:3, the first cooling tube and second cold
But the distance between pipe is equal with the external diameter of the first cooling tube, the wall thickness of the first cooling tube and the second cooling tube be 0.1mm~
0.15mm, the wall thickness of evaporation cavity is 0.8mm~1mm, and the internal diameter of through hole is 0.25mm~0.35mm.
Preferably, being provided with described through hole, u shape is curved, the curved top of u shape is line part, and the curved lower section of u shape is curve
Portion.
Preferably, described sprayer unit includes feed tube, feed tube is connected with trocar sheath, and trocar sheath is internally provided with interior
Sleeve pipe, the lateral wall of inner sleeve is provided with several inlet openings and is connected with trocar sheath, is provided with atomising mechanism in inner sleeve, interior
The outlet of sleeve pipe is located at outside trocar sheath.
Preferably, described atomising mechanism includes several screw rods, screw shaft is connected in inner sleeve, two neighboring screw rod it
Between be provided with row's elastic sheet metal, remain with space, mistake between adjacent screw rod and elastic sheet metal between elastic sheet metal
It is full of cooperation, the direction of rotation of the screw rod of same row's elastic sheet metal both sides is contrary.
Preferably, the coefficient of expansion of described first metal clips is more than the coefficient of expansion of the second metal clips.
Preferably, the outside of described screw rod is evenly arranged with several plectrums, elastic sheet metal is provided with inclined hole, bullet
Property sheet metal surface be provided with sawtooth layer, inclined hole and the angle of sawtooth layer are 90 °, and plectrum is contacted with sawtooth layer.
A kind of heat dissipating method of the heat abstractor for above-mentioned high speed cutting tool, comprises the following steps:
A, in the first cooling tube and the second cooling tube, it is filled with the first coolant and the second coolant respectively, and pass through frequency conversion
Circulating pump is circulated in the first cooling tube and the second cooling tube, and sprayer unit is carried out to evaporation cavity using cutting fluid simultaneously
Injection;
The first coolant rate in b, the first cooling tube changes with the change of the temperature of cutting position, the second cooling
The second coolant rate in pipe changes with the change of heat conduction oil temperature, and the emitted dose of sprayer unit is with the first coolant
Temperature change and change;
After c, cutting terminate, stop the circulation of the first coolant, and keep the second coolant circulation and cutting fluid simultaneously
Normal injection, wholly off after time delay.
Using having the beneficial effects that technique scheme is brought: the present invention solves in prior art spray cooling no
Method gos deep into the problem in cutwork face, and the evaporation being produced in evaporation cavity by cutting fluid is so that cutting fluid can be more
Enter cutwork face, utilize the evaporation of cutting fluid simultaneously, so that the mean temperature in the first cooling tube reduces, thus carrying
The heat conduction efficiency of high cutter interior cooling circulation.The inner metal sleeve of setting and gold between the first cooling tube and the second cooling tube
Belong to overcoat and can effectively carry out heat conduction, thus reducing the hysteresis quality of coolant rate control.Sprayer unit can be real
The combination injection of existing liquid and mist state, and the negative pressure brought using the flow at high speed of cutting fluid drives the spray of mist state cutting fluid
Go out.Compared with common supersonic atomizer or atomizer, the sprayer unit that the present invention provides can provide larger stream
The cutting fluid injection dosage of amount, atomization level is moderate, is suitable for matching with evaporation cavity thus reaching good injection evaporation effect
Really.
Brief description
Fig. 1 is the structure chart of one specific embodiment of the present invention.
Fig. 2 is the structure chart of cooling chamber in one specific embodiment of the present invention.
Fig. 3 is the structure chart of through hole in one specific embodiment of the present invention
Fig. 4 is the structure chart of guiding gutter in one specific embodiment of the present invention.
Fig. 5 is the structure chart of elastic sheet metal in one specific embodiment of the present invention.
In figure: 1, cutter body;2nd, cooling chamber;3rd, sprayer unit;4th, the first cooling tube;5th, the second cooling tube;6th, steam
Send out cavity;7th, through hole;8th, the first metal clips;9th, inner metal sleeve;10th, the second metal clips;11st, metal-coating;12nd, groove;
13rd, guiding gutter;14th, adjusting lever;15th, u shape is curved;16th, line part;17th, curve part;18th, feed tube;19th, trocar sheath;20th, inner sleeve
Pipe;21st, inlet opening;22nd, screw rod;23rd, elastic sheet metal;24th, plectrum;25th, sawtooth layer;26th, inclined hole;27th, deflection plate;28th, narrow
Seam;29th, baffle plate.
Specific embodiment
All can commercially using the standardized element arriving in the present invention, shaped piece is according to description and accompanying drawing
Record and all can carry out customized, the concrete connected mode of each part all adopts the bolt of maturation, rivet, weldering in prior art
The conventional meanses such as connect, paste, will not be described in detail herein.
Reference picture 1-5, one specific embodiment of the present invention includes cutter body 1, is provided with cooling chamber in cutter body 1
Room 2, the outside of cutter body 1 is provided with sprayer unit 3, is provided with the first cooling tube 4 and the second cooling in described cooling chamber 2
Pipe 5, the first cooling tube 4 is be arranged in parallel with the second cooling tube 5, and the first cooling tube 4 is located at the outside of the second cooling tube 5, cooling chamber
It is filled with conduction oil, cooling chamber 2 top is provided with evaporation cavity 6, the part body of the first cooling tube 4 is located at evaporation cavity in room 2
In body 6, evaporation cavity 6 is provided with several through holes 7, the injection direction of sprayer unit 3 is towards evaporation cavity 6, the first cooling
Pipe 4 is provided with the first metal clips 8 towards on the direction of the second cooling tube 5, and the top of the first metal clips 8 is connected with metal
Set 9, the second cooling tube 5 is dorsad provided with the second metal clips 10, the top of the second metal clips 10 on the direction of the first cooling tube 4
Portion is connected with metal-coating 11, and metal-coating 11 is provided with groove 12, and it is cold that metal-coating 11 is plugged on second by groove 12
But the outside of pipe 5, the top of metal-coating 11 is plugged in together with the top slide of inner metal sleeve 9, and the bottom of through hole 7 is arranged on
On the side wall of cutter body 1, the lower section of through hole 7 is connected with guiding gutter 13, and the first cooling tube 4 and the second cooling tube 5 set respectively
It is equipped with a frequency variable circulating pump (not shown).The internal diameter of the first cooling tube 4 is 2.5mm, and the internal diameter of the second cooling tube 5 is
7.5mm, the distance between the first cooling tube 4 and the second cooling tube 5 are equal with the external diameter of the first cooling tube 4, the first cooling tube 4
Wall thickness is 0.12mm, and the wall thickness of the second cooling tube 5 is 0.15mm, and the wall thickness of evaporation cavity 6 is 0.8mm, and the internal diameter of through hole 7 is
0.3mm.The top being provided with u shape curved 15, u shape curved 15 in through hole 7 is line part 16, and the lower section of u shape curved 15 is curve part 17.Spray
Mist device 3 includes feed tube 18, and feed tube 18 is connected with trocar sheath 19, and trocar sheath 19 is internally provided with inner sleeve 20, inner sleeve
20 lateral wall is provided with several inlet openings 21 and is connected with trocar sheath 19, is provided with atomising mechanism, inner sleeve in inner sleeve 20
The outlet of pipe 20 is located at outside trocar sheath 19.Atomising mechanism includes several screw rods 22, and screw rod 22 axle is connected in inner sleeve 20, phase
It is provided with row's elastic sheet metal 23 between adjacent two screw rods 22, between elastic sheet metal 23, remain with space, adjacent screw rod
Interference fit between 22 and elastic sheet metal 23, the direction of rotation of the screw rod 22 of same row's elastic sheet metal 23 both sides is contrary.Spiral shell
The outside of bar 22 is evenly arranged with several plectrums 24, and elastic sheet metal 23 is provided with inclined hole 26, the table of elastic sheet metal 23
Face is provided with sawtooth layer 25, and inclined hole 26 is 90 ° with the angle of sawtooth layer 25, and plectrum 24 is contacted with sawtooth layer 25.First metal
The coefficient of expansion of shell fragment 8 is 71.5, and the coefficient of expansion of the second metal clips 10 is 43.2.It is provided with several foldings in guiding gutter 13
Stream plate 27, is provided with slit 28 between the bottom of deflection plate 27 and guiding gutter 13.
For the heat dissipating method of the heat abstractor of above-mentioned high speed cutting tool, comprise the following steps:
A, in the first cooling tube 4 and the second cooling tube 5, it is filled with the first coolant and the second coolant respectively, and by becoming
Frequency circulating pump is circulated in the first cooling tube 4 and the second cooling tube 5, and sprayer unit 3 uses cutting fluid to evaporation cavity simultaneously
Body 6 is sprayed, and spray angle is 25 °;
The first coolant rate in b, the first cooling tube 4 changes with the change of the temperature of cutting position, its change
Rule is: q1=k1*t1 2, q1For the first coolant rate, t1For cutting position temperature, k1For the first proportionality coefficient;
The second coolant rate in second cooling tube 5 changes with the change of heat conduction oil temperature, and its Changing Pattern is:
q2=k2* (dt2/ dt) * t2,q2For the second coolant rate, t2For heat conduction oil temperature, k2For the second proportionality coefficient;
The emitted dose of sprayer unit changes with the temperature change of the first coolant, and its Changing Pattern is: q3=k3*t3 2+
k4*t3, q3For sprayer unit emitted dose, t3For the temperature of the first coolant, k3And k4It is respectively the 3rd proportionality coefficient and the 4th ratio
Example coefficient;
After c, cutting terminate, stop the circulation of the first coolant, and keep the second coolant circulation and cutting fluid simultaneously
Normal injection, wholly off after time delay, time delay condition is the first coolant, the second coolant, the temperature of conduction oil all drop
To less than 40 DEG C, and delay time is more than or equal to 10min.
Wherein, the first coolant includes the diphenyl acetic acid first of the ethanol of 25wt%, the propylene glycol monomethyl ether of 2.5wt%, 3wt%
Ester, the sodium citrate of 2wt%, balance of deionized water;Second coolant include the ethanol of 15wt%, the propylene glycol monomethyl ether of 5wt%,
The diethanol phenylate of 0.75wt%, the 2- chloroethyl sodium sulfonate of 3.5wt%, balance of deionized water.
It is provided with baffle plate 29, baffle plate 29 carries out the regulation of upper-lower position by adjusting lever 14 above inlet opening 21.By gear
The change of plate 29 position, thus it is possible to vary the atomization quantity of atomising mechanism.When the temperature of the first coolant raises, reduce baffle plate 29
Position, reduces the atomization quantity of atomising mechanism, when the temperature of the second coolant raises, raises the position of baffle plate 29, improves atomization
The atomization quantity of mechanism, if the temperature of two kinds of coolings all rises, directly improves the flow of cutting fluid.
Present invention is particularly suitable for big depth cuts operating mode for a long time, can effectively protect cutting tool and processing
Part.
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.