CN104475849B - Manufacturing method for durable milling cutter - Google Patents
Manufacturing method for durable milling cutter Download PDFInfo
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- CN104475849B CN104475849B CN201410789691.8A CN201410789691A CN104475849B CN 104475849 B CN104475849 B CN 104475849B CN 201410789691 A CN201410789691 A CN 201410789691A CN 104475849 B CN104475849 B CN 104475849B
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- workpiece
- milling cutter
- heating
- hardness
- support stick
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- 238000003801 milling Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000010791 quenching Methods 0.000 claims abstract description 8
- 230000000171 quenching effect Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000005496 tempering Methods 0.000 claims abstract 2
- 229910000734 martensite Inorganic materials 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 3
- 239000010721 machine oil Substances 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000000704 physical effect Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005289 physical deposition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/34—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/22—Martempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turning (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a durable milling cutter and a manufacturing method thereof. The durable milling cutter comprises a cutting layer which is arranged in the middle of the axis of a tool and clamping layers which are arranged on two sides of the cutting layer, wherein the clamping layers are harder than the cutting layer, a plurality of expanded cavities are formed on the middle axles on two sides of the cutting layer in an array manner, supporting rods which are in interference fit with the expanded cavities are placed in the expanded cavities, and the cutting edge plane of the tool is arranged on the cutting layer. The manufacturing process comprises the following steps: a stock manufacturing process, a primary heating process, a primary cooling process, a secondary heating process, a secondary cooling process and a forming process. The tool has different physical properties inside and outside by center tempering and peripheral quenching of the tool; as the durable milling cutter is harde in surface and good in rigidity, so that the durable milling cutter has good installation precision; meanwhile, the hardness at the cutting edge of the tool is relatively small, so that the durable milling cutter is easy to polish, and easy deformation due to small hardness and the like is avoided.
Description
Technical field
The present invention relates to a kind of manufacture method of durable type milling cutter, belongs to tools for machine tools field.
Background technology
At present, cut stainless steel material cutting tool have higher intensity requirement, due to cutter and stainless steel material
Between the cutting used heat that produces of continuous frictional, cause cutting edge bonding, tool wear serious, produce processing hardening, and easily produce
Raw bits tumor, is difficult chip breaking, and these factors can affect universal cutter cutting precision and service life, while universal cutter can not be at a high speed
Cut stainless steel in high quality.In prior art, hard is coated on cutter usually through physical deposition and the method for chemical deposition
Coating, this method can improve to a certain extent intensity, hardness, wear resistance and the service life of cutter,
However, this kind of film layer is loose porous, mechanical property is slightly worse, and film substrate bond strength is low, and described cutter for cutting to coating with
Adhesion requirement between matrix is higher, once between the two adhesion not enough, then coating shedding easily occurs, affects cutter
Service life.
Refer to that a kind of employing ion pair cutter interior physical property improved in ZL201110144780.3 to system
Scheme and associated cutter are made, this kind of processing method difficulty is than larger, it is impossible to realize in most factories, cost is higher,
And the performance indications of this kind of mode of ameliorating are under non-cutting state, it is difficult to be detected；In addition the cutter mentioned in the patent is adopted
Ion implanting is carried out with pulse mode, it is easy to which the crystalline phase distribution and molecule consistency on cutter interior brings impact, affects
The stress distribution of cutter interior so that cutter easily bursts apart when in use.
For another example ZL97198792.0, it is mentioned that a kind of cutter of edge sword, although this kind of cutter is improved by material reaching
Good physical property has been arrived, but its cutter is bonded by bi-material, and integraty is poor, it is easy in turning because knife
Tool is heated, cools down and so that ftracture between bi-material, cause the cracking of cutter.
The content of the invention
The technical problem to be solved in the present invention is：, in high-speed cutting, easy all day occurs to overcome cutter in prior art
Abrasion and the larger technical problem of difficulty of polishing, there is provided a kind of durable type milling cutter and its manufacture method.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of manufacture method of durable type milling cutter, the milling cutter includes being located at the cutting lay in the middle part of tool axis and positioned at cutting
The clamping layer of layer both sides is cut, the hardness of the clamping layer is more than cutting lay, goes into battle in two side central axis of the cutting lay
Row are provided with some expansion cavitys, the expansion cavity filled with support stick, the support stick and expansion cavity interference fit,
The cutting edge plane of the cutter is located on cutting lay.
The manufacture method includes heating process, cooling procedure, a course of processing, post bake process and secondary
Cooling procedure and forming process；
1. a heating process：Blank part is put into into low frequency electromagnetic stove to be heated, heating-up temperature it is stable 800 ~
1000℃；
2. a cooling procedure：Whole blank part is carried out into isothermal hardening, treats that workpiece surface temperature is reduced to 200 ~ 300
DEG C when, on blank part clamping to drilling machine, will be drilled on the side wall of the blank part of strip so as to obtain expand cavity,
The axis of expansion cavity is vertical with the axis of blank part, and the axis of drilling should be located on the axis of the blank part of strip；
3. post bake process, heating rod array corresponding with expansion array of cavities by being fixed on a heating rod,
A cylindrical cavity is provided with the heating rod, one electrothermal tube is installed in cylindrical empty intracavity, heating rod is installed
Air stove is put the workpiece in into after, slow heat is carried out, is interference fit between heating rod and expansion cavity, heating rod passes through
Electrothermal tube is conducted heat, and heating-up temperature is stable at 500 ~ 700 DEG C；
4. secondary cooling process, when workpiece surface temperature is stablized at 500 ~ 700 DEG C, starts electrothermal tube, and blank is put into
Stage-hardening is carried out in machine oil pond, the positive and negative two sides of workpiece occur first rapid quenching, treat that workpiece surface temperature is reduced to
When 200 ~ 300 DEG C, air-cooled, surface of the work quick-hardening in the presence of quenching is carried out, workpiece middle part is made in the waste heat of heating rod
It is tempered with, inner hardness is less than surface of the work hardness；
5. forming process, by hammering heating rod is removed, while the two sides of workpiece are clamped, in expansion cavity
Interior to press-fit support stick by static(al), the hardness of support stick should be greater than or equal to the hardness of outer surface of workpiece, right after the completion of loading
Surface of the work is cut so that parallel to each other between the apparent surface of workpiece.
Used as the further innovation of the present invention, the support stick is titanium alloy material.
Used as the further innovation of the present invention, the cutting lay is tempered martensite, and the clamping layer is tempered martensite
With the mixed layer of martensite.
Used as the further innovation of the present invention, the forming process also includes solidification process, and the solidification process is for first
Workpiece to installing support stick is heated, and heating adopts air stove, and temperature is 150 ~ 300 DEG C, is reached in workpiece surface temperature
To after 200 DEG C, workpiece is put into and carry out in oil oil cooling.
Used as the further innovation of the present invention, the solidification process also includes the process heated to support stick：To prop up
After support rod is heated to 300 ~ 400 DEG C, it is pressed in expansion cavity via pneumatic hammer.
Used as the further innovation of the present invention, the heating rod includes quartz outer tube and electric heating inner tube, the quartz outer tube
It is socketed in electric heating inner tube, heat-conducting silicone grease is filled between the quartz outer tube and cylindrical empty cavity wall.
Used as the further innovation of the present invention, the heating rod is made of copper.
The invention has the beneficial effects as follows：
1st, the present invention carries out Local cooling to workpiece come the physical characteristics of improved tool diverse location by differential, differential temperature.
The hardness of cutter middle part material is less than the hardness of cutter exterior material, first so that cutter is when clamping,
Because the hardness on surface is higher, rigidity is more preferably, it is possible to possess more preferable installation accuracy；While the hardness ratio at cutting edge roundness
It is less, it is more prone to be polished, under cutting edge sheet is supported in the higher cutter outer surface of hardness, certain cutting can be kept
Power, will not be susceptible to situations such as deforming because hardness is too small.
In cutting feed excessive velocities, in the case that cutting edge constant-pressure is excessive, the less cutting edge of hardness can become first
Shape, compared to traditional integral rigidity high cutter is all compared, and the cutter of the present invention can timely find foregoing problems, will not
All deform in whole cutter or just find in the case of ftractureing, after cutting edge deformation, can timely reduce the depth of cut, and
Again polish cutting edge, prevent the damage of workpiece and lathe.
Support stick can provide good support performance and rigidity for cutter, reduce cutter after prolonged cutting, send out
Situations such as raw deformation.
2nd, the support stick of titanium alloy material not only make use of the good rigidity of titanium alloy and case hardness, while also utilizing
The good metal fusion performance of titanium alloy, compared to other metals, titanium alloy once merges, just do not allow it is easy to fall off, it is stable
Property is improved.
3rd, the hardness of tempered martensite is moderate, is especially suitable for the processing of soft cutting edge being previously mentioned in the present invention.
4th, once heating of the invention can allow blank body to be transformed into austenite, and the crystal in blank can be changed
It is good, to ensure stablizing for physical property, while before turning, blank is reduced to 200 DEG C or so rather than is cooled to by the present invention
Room temperature, blank now is not fully hardened, if now processing expansion cavity, will not cause blank because of the stress for adding man-hour
The molecule in cutting face gather and crystal arrangement and blank inside create a difference, so as to affect future, entirely cutter product is stablized
Property；
During post bake, heating rod and blank Synchronous Heating itself, temperature gap is little, expansion also relatively synchronization, it is not easy to
Because the temperature difference is different with expansion causing the damage of heating rod；
Cooling twice is incubated by heating rod to the inside of blank part so that quenching is synchronously carried out with annealing, and is compared
In traditional selective hardening, the controllability of the crystal of the present invention is more preferable；
5th, solidification process of the invention is used to improve the consistency of cutter interior molecule, prevent from cooling down it is asynchronous produced by
Internal stress is uneven, cutter interior Stress non-homogeneity, it is easy to when in use, bursting apart for cutter occurs, while can also prevent
When only support stick is inserted, the cracking that tool surface occurs because of deformation；
Simultaneously in order to quick oil cooling can allow blank that very fast contraction occurs, can improve between expansion cavity and support stick
Fitness.
6th, support stick its case hardness after heating is lower, so as to pair expansion cavity deformed because of heat treatment carry out it is good
Good filling, increases its adhesion, it is ensured that stress it is uniform.
7th, the heating tube of quartz ampoule and electric heating is drawn materials conveniently, and with good Water-proof and oil-proof performance, it is not easy to damaged,
Can be with Reusability, the heat-conducting silicone grease filled can provide good heat-transfer effect.
8th, copper heating rod case hardness is relatively low, heating rod into and out when, it is not easy to expand cavity make
Into deformation.
Description of the drawings
With reference to the accompanying drawings and examples the present invention is further described.
Longitudinal sectional drawing when Fig. 1 is post bake of the present invention；
Transverse cross-sectional view when Fig. 2 is post bake of the present invention；Heating rod 4
Figure includes：Cutting lay 1 and the clamping layer 6 positioned at the both sides of cutting lay 1 in the middle part of axis, the clamping layer 6 it is hard
Degree is more than cutting lay 1, expansion cavity 2, heating rod 3, heating rod 4, cylindrical cavity 5, clamping layer 6.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are simplified schematic diagram, only with
The basic structure of the illustration explanation present invention, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, a kind of durable type milling cutter, including the cutting lay 1 in the middle part of tool axis and positioned at 1 liang of cutting lay
The clamping layer 6 of side, the hardness of the clamping layer 6 is more than cutting lay 1, the array on two side central axis of the cutting lay 1
Some expansion cavitys 2 are provided with, support stick is filled with the expansion cavity 2, the support stick is matched somebody with somebody with the expansion interference of cavity 2
Close, the cutting edge plane of the cutter is located on cutting lay 1；
The support stick is titanium alloy material；
The cutting lay 1 is tempered martensite, and the clamping layer 6 is the mixed layer of tempered martensite and martensite.
As shown in Figure 1 and 2, a kind of manufacture method of durable type milling cutter：Including heating process, cooling procedure, plus
Work process, post bake process and secondary cooling process and forming process；
1. a heating process：Blank part is put into into low frequency electromagnetic stove to be heated, heating-up temperature it is stable 800 ~
1000℃；
2. a cooling procedure：Whole blank part is carried out into isothermal hardening, treats that workpiece surface temperature is reduced to 200 ~ 300
DEG C when, on blank part clamping to drilling machine, will be drilled on the side wall of the blank part of strip so as to obtain expand cavity
2, the axis for expanding cavity 2 is vertical with the axis of blank part, and the axis of drilling should be located on the axis of the blank part of strip；
3. post bake process, the array of heating rod 3 corresponding with the expansion array of cavity 2 is by being fixed on a heating rod 4
On, a cylindrical cavity 5 is provided with the heating rod 4, an electrothermal tube is installed in cylindrical cavity 5, it is described to add
Hot pin 3 includes quartz outer tube and electric heating inner tube, and the quartz outer tube is socketed in electric heating inner tube, the quartz outer tube and cylinder
Heat-conducting silicone grease is filled between the inwall of cavity 5.
Put the workpiece in air stove after the installation of heating rod 3, carry out slow heat, heating rod 3 and expansion cavity 2 it
Between be interference fit, heating rod 3 conducted heat by electrothermal tube, and heating-up temperature is stable at 500 ~ 700 DEG C；
4. secondary cooling process, when workpiece surface temperature is stablized at 500 ~ 700 DEG C, starts electrothermal tube, and blank is put into
Stage-hardening is carried out in machine oil pond, the positive and negative two sides of workpiece occur first rapid quenching, treat that workpiece surface temperature is reduced to
When 200 ~ 300 DEG C, air-cooled, surface of the work quick-hardening in the presence of quenching is carried out, workpiece middle part is made in the waste heat of heating rod 3
It is tempered with, inner hardness is less than surface of the work hardness；
5. forming process, by hammering heating rod 3 is removed, while the two sides of workpiece are clamped, in expansion cavity
Support stick is press-fited by static(al) in 2, the hardness of support stick should be greater than or equal to the hardness of outer surface of workpiece, after the completion of loading,
Surface of the work is cut so that parallel to each other between the apparent surface of workpiece；
The forming process also includes solidification process, and the solidification process is that the workpiece first to installing support stick is carried out
Heating, heating adopts air stove, and temperature is 150 ~ 300 DEG C, after workpiece surface temperature reaches 200 DEG C, workpiece is put into into oil
In carry out oil cooling.
The solidification process also includes the process heated to support stick：After support stick is heated to into 300 ~ 400 DEG C, Jing
It is pressed in expansion cavity 2 by pneumatic hammer.
When using, cutting edge is set in the position of cutting lay 1, clamping layer 6 is installed on the power output shaft of milling machine；
Local cooling is carried out to workpiece come the physical characteristics of improved tool diverse location by differential, differential temperature.
The hardness of cutter middle part material is less than the hardness of cutter exterior material, first so that cutter is when clamping,
Because the hardness on surface is higher, rigidity is more preferably, it is possible to possess more preferable installation accuracy；While the hardness ratio at cutting edge roundness
It is less, it is more prone to be polished, under cutting edge sheet is supported in the higher cutter outer surface of hardness, certain cutting can be kept
Power, will not be susceptible to situations such as deforming because hardness is too small.
In cutting feed excessive velocities, in the case that cutting edge constant-pressure is excessive, the less cutting edge of hardness can become first
Shape, compared to traditional integral rigidity high cutter is all compared, and the cutter of the present invention can timely find foregoing problems, will not
All deform in whole cutter or just find in the case of ftractureing, after cutting edge deformation, can timely reduce the depth of cut, and
Again polish cutting edge, prevent the damage of workpiece and lathe.
Support stick can provide good support performance and rigidity for cutter, reduce cutter after prolonged cutting, send out
Situations such as raw deformation.
With the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Entirely various change and modification can be carried out in the range of without departing from this invention technological thought.The technology of this invention
Property scope is not limited to the content in description, it is necessary to its technical scope is determined according to right.
Claims (7)
1. a kind of manufacture method of durable type milling cutter, is characterized in that：The milling cutter includes being located at the cutting lay in the middle part of tool axis
With the clamping layer positioned at cutting lay both sides, the hardness of the clamping layer is more than cutting lay, in two middle side edges of the cutting lay
Array is provided with some expansion cavitys, the expansion cavity filled with support stick, the support stick and expansion cavity on axis
Interference fit, the cutting edge plane of the cutter is located on cutting lay；
Manufacture process includes heating process, cooling procedure, a course of processing, post bake process and secondary cooling process
And forming process；
Heating process：Blank part is put into into low frequency electromagnetic stove to be heated, heating-up temperature is stable at 800 ~ 1000 DEG C；
Cooling procedure：Whole blank part is carried out into isothermal hardening, when workpiece surface temperature is reduced to 200 ~ 300 DEG C, will
Blank part clamping is drilled so as to obtain expanding cavity on drilling machine on the side wall of the blank part of strip, and expansion is empty
The axis in chamber is vertical with the axis of blank part, and the axis of drilling should be located on the axis of the blank part of strip；
Post bake process, heating rod array corresponding with expansion array of cavities is generated heat on rod by being fixed on one, described
A cylindrical cavity is provided with hot rod, one electrothermal tube is installed in cylindrical empty intracavity, will after heating rod installation
Workpiece puts into air stove, carries out slow heat, is interference fit between heating rod and expansion cavity, and heating rod passes through electrothermal tube
Conducted heat, heating-up temperature is stable at 500 ~ 700 DEG C；
Secondary cooling process, when workpiece surface temperature is stablized at 500 ~ 700 DEG C, starts electrothermal tube, and blank is put into into machine oil
Stage-hardening is carried out in pond, the positive and negative two sides of workpiece occur first rapid quenching, treat that workpiece surface temperature is reduced to 200 ~ 300
DEG C when, carry out air-cooled, surface of the work quick-hardening in the presence of quenching, workpiece middle part is carried out under the waste heat effect of heating rod
Tempering, inner hardness is less than surface of the work hardness；
Forming process, by hammering heating rod is removed, while the two sides of workpiece are clamped, by quiet in expansion cavity
Dress support stick is forced, the hardness of support stick should be greater than or equal to the hardness of outer surface of workpiece, after the completion of loading, to surface of the work
Cut so that parallel to each other between the apparent surface of workpiece.
2. a kind of manufacture method of durable type milling cutter as claimed in claim 1, is characterized in that：The support stick is titanium alloy material
Matter.
3. a kind of manufacture method of durable type milling cutter as claimed in claim 1, is characterized in that：The cutting lay is tempered martensite
Body, the clamping layer is the mixed layer of tempered martensite and martensite.
4. a kind of manufacture method of durable type milling cutter as claimed in claim 1, it is characterised in that：The forming process also includes
Solidification process, the solidification process is that the workpiece first to installing support stick is heated, and heating adopts the air stove, temperature to be
150 ~ 300 DEG C, after workpiece surface temperature reaches 200 DEG C, workpiece is put into and carry out in oil oil cooling.
5. a kind of manufacture method of durable type milling cutter as claimed in claim 4, it is characterised in that：The solidification process also includes
The process that support stick is heated：After support stick is heated to into 300 ~ 400 DEG C, it is pressed in expansion cavity via pneumatic hammer.
6. a kind of manufacture method of durable type milling cutter as claimed in claim 1, it is characterised in that：The heating rod includes quartz
Outer tube and electric heating inner tube, the quartz outer tube is socketed in electric heating inner tube, between the quartz outer tube and cylindrical empty cavity wall
Filled with heat-conducting silicone grease.
7. a kind of manufacture method of durable type milling cutter as claimed in claim 1, it is characterised in that：The heating rod adopts copper
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410789691.8A CN104475849B (en) | 2014-12-19 | 2014-12-19 | Manufacturing method for durable milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410789691.8A CN104475849B (en) | 2014-12-19 | 2014-12-19 | Manufacturing method for durable milling cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104475849A CN104475849A (en) | 2015-04-01 |
| CN104475849B true CN104475849B (en) | 2017-04-12 |
Family
ID=52750525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410789691.8A Expired - Fee Related CN104475849B (en) | 2014-12-19 | 2014-12-19 | Manufacturing method for durable milling cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104475849B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252102A (en) * | 1979-04-19 | 1981-02-24 | Christensen, Inc. | Cutting element for processing rocks, metal or the like |
| JP2000005904A (en) * | 1998-06-18 | 2000-01-11 | Sumitomo Metal Mining Co Ltd | Surface treated steel based cutting tool |
| CN201432139Y (en) * | 2009-05-08 | 2010-03-31 | 尖点科技股份有限公司 | Milling cutter structure improvement |
| DE102010037286A1 (en) * | 2010-09-02 | 2012-03-08 | Knipex-Werk C. Gustav Putsch Kg | Schneidzange |
| CN103495849B (en) * | 2013-10-10 | 2016-05-18 | 北京航空航天大学 | A kind of face gear milling cutter manufacture method |
| CN103952521B (en) * | 2014-04-14 | 2016-03-23 | 宁波宏迪尺业有限公司 | A kind of method making two hardness blade |
-
2014
- 2014-12-19 CN CN201410789691.8A patent/CN104475849B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104475849A (en) | 2015-04-01 |
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