CN110303300A - The processing technology of titanium alloy brushless motor shell - Google Patents
The processing technology of titanium alloy brushless motor shell Download PDFInfo
- Publication number
- CN110303300A CN110303300A CN201910618788.5A CN201910618788A CN110303300A CN 110303300 A CN110303300 A CN 110303300A CN 201910618788 A CN201910618788 A CN 201910618788A CN 110303300 A CN110303300 A CN 110303300A
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- milling
- alloy
- titanium
- milling cutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of processing technology of titanium alloy brushless motor shell, including successively processing step as follows: titanium alloy blank being struck out to the shape of motor case first, Milling Process is then carried out by the way of climb cutting；It further include titanium alloy crude green body rolling process at least twice before carrying out punching press to titanium alloy blank；It is Milling Process twice in Milling Process process, it is for the first time the low speed interrupted cut that Milling Speed is 30~60m/min, the material of milling cutter used is ultrafine gain size, and second be the material of form milling and milling cutter used that Milling Speed is 15~35m/min is high-speed steel M42.The present invention has captured miniature precision titanium alloy metal cutting difficulty, difficult forming, has prevented the problems such as warpage；Manufactured brushless motor casing has low-density, and high-intensitive, high-temperature behavior is good, and corrosion resistance is strong and composite material combines excellent in compatibility equal outstanding advantages.
Description
Technical field
The present invention relates to the processing technologys of titanium alloy brushless motor shell.
Background technique
2011, the consumption proportion of global commerce aviation reached 46%, and military titanium ratio is 9% (predominantly military boat
It is empty), entire aviation field consumption titanium ratio surpasses 50%；Industrial consumption titanium ratio is 43%, and emerging market consumes titanium ratio
Example is 2%.But there are notable differences on area for titanium article demand structure, are possessing flourishing aerospace and military project state
The North America and European Union area of anti-industry, the especially U.S., 50% or more titanium article demand is from aerospace and military project state
Anti- field.China be although the maximum titanium producing country in the whole world and country of consumption one of, but the big portion of titanium article demand, China
Divide and come from chemical field, technology content is not relatively high, and aerospace field high demand accounts for 10% or so.It is led specific to chemical industry
Domain, titanium application is mainly corrosion-resistant material, and six big application fields are respectively chlor-alkali, soda ash, vacuum salt production, petro-chemical fiber, essence
Refine work and inorganic salts.
Its is light-weight for titanium, intensity is high, there is metallic luster, corrosion-resistant, high-low temperature resistant etc. to be characterized in that motor case is managed
The moulding material thought, but be made in the prior art of titanium since its material is not easily molded, not easy to be processed and cost is excessively high
Motor case production in the blank phase, no matter domestic or external people can not be made using titanium at this stage
Motor case.
Machining is especially difficult when the hardness of titanium alloy is greater than HB350, and it is existing that viscous knife is then easy to appear when less than HB300
As, it is also difficult to it cuts.But the hardness of titanium alloy is only difficult to the one aspect of machining, and key is that titanium alloy itself is changed
It learns, influence of the synthesis between Physical and mechanical properties to its machinability.
The current development trend of titanium alloy: since the access threshold of China's titanium industry is lower, lead to low side titanium dog-eat-dog.
Therefore, the plant networki meaning of high-end titanium is more great, and product structure becomes its inexorable trend developed to high-end transfer.State
Demand of the industries such as interior petrochemical industry, aerospace, electric power, ocean engineering and Leisure Sport to high-end titanium products continues to keep prosperous
It contains, the high-tech industries such as simultaneous computer are also continuing to bring out the demand growth point of titanium, and titanium products is promoted to send out to high-end field
Exhibition.Currently, China's titanium only 10% is used for high-end field, and foreign countries 50% apply in high-end field, this is a no small difference
Away from.Domestic titanium industry has had the support of the dual guiding of policy and market to high-endization development, steps up industrial chain advantage,
It will be a long-range development process.By exploitation titanium band, titanium and its alloy extrusion tubing, new function titanium is researched and developed, it is full with this
The whole construction of foot country needs, and is the vital task of current China's titanium industry development.Due to the machine physical property of titanium itself, at present
It there is no core technology that can research and develop success both at home and abroad, maturation is applied on motor casing.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, adding for titanium alloy brushless motor shell is provided
Work technique a variety of international problems such as captures miniature precision titanium alloy metal cutting difficulty, difficult forming, prevents warpage, simultaneously
The motor case can be zoomed in and out by ratio or expanding production, and use scope is extensive；The corresponding small-sized essence of the present invention
The high-end extraordinary profile of domain-specific high-precision such as close high-speed brushless motor titanium alloy brushless motor casing is suitable for aerospace, doctor
Various different level fields such as treatment, machinery have low-density, and high-intensitive, high-temperature behavior is good, and corrosion resistance is strong, and multiple
Condensation material combines excellent in compatibility equal outstanding advantages.
To achieve the above object, the technical scheme is to design a kind of processing works of titanium alloy brushless motor shell
Skill, including successively processing step as follows: titanium alloy blank being struck out to the shape of motor case first, then to the horse of square tube type
Milling Process is carried out by the way of climb cutting up to shell and mills out square hole；It further include at least two before carrying out punching press to titanium alloy blank
Secondary titanium alloy crude green body rolling process；Be Milling Process twice in Milling Process process, for the first time for Milling Speed be 30~
The low speed interrupted cut of 60m/min, the material of milling cutter used are ultrafine gain size, are for Milling Speed for the second time
The material of the form milling of 15~35m/min and milling cutter used is high-speed steel M42.Its is light-weight for titanium, intensity is high, tool
There are metallic luster, corrosion-resistant, high-low temperature resistant etc. to be characterized in the ideal moulding material of motor case；High-speed steel M42 is high cobalt toughness
High-speed steel is mainly used for the accurate wear-resisting hardware cold-punching mould of high tenacity, it can also be used to cooling in cutting tool and knife, high temperature hardness
Height is easy grinding.Steel hardness is high, and up to 70HRC, thermohardening is good, and high temperature hardness is high, is easy grinding.Use carbide cutter tool
Tool, as tungsten-cobalt series hard alloy with titanium alloy chemical affinity is small, thermal conductivity is good, intensity is also higher.Under low speed when interrupted cut
It selects impact-resistant ultrafine gain size, and shapes and the complex cutting tool then high-speed steel good with high-temperature behavior, by twice
Cutting reaches final desired shape of product structure, using milling twice and twice using different milling cutters, can be properly arrived at
The requirement of final products overcomes not easily molded, the not easy to be processed problem of titanium alloy its material.Titanium alloy milling is more tired than turning
Difficulty, because milling is interrupted cut, and chip is easily bonded with blade, when the cutter tooth of viscous bits cuts workpiece again, is glued
Bits are touched down and take away a fritter cutter material, form tipping, significantly reduce cutting wear.Therefore titanium alloy is milled
The milling mode for taking climb cutting is cut, cutter material then uses high-speed steel M42.The processing of general steel alloy does not use climb cutting,
Because of machine tool lead screw, the influence in nut gap, when climb cutting, milling cutter is acted on workpiece, component and feeding side in feed direction
To identical, so that work stage is generated intermittence play, cause to forge a knife.For climb cutting, cutter tooth is cut at the beginning just encounters sclerderm
And lead to tool failure.But since upmilling chip is by thin to thickness, in initial incision, cutter adds easily with workpiece generation dry friction
The viscous bits and tipping of weight cutter, for titanium alloy, latter contradiction seems more prominent, therefore uses climb cutting.In addition, due to titanium
The characteristic of alloy, therefore lower Milling Speed has been selected, and use sharp teeth profile milling cutter, it is strong to improve that point of a knife uses arc transition sword
Degree, avoids wedge angle scaling loss and tipping.To improve production efficiency, it can suitably increase milling depth and width, milling depth is generally thick
It is processed as 1.5~3.0mm, is finished as 0.2~0.5mm.For also negative incidence can be ground in cutting wimble fraction convenient for chip removal.To the greatest extent
Amount selects short screw tap to increase screw tap rigidity.It the back taper part of screw tap should be compared with the appropriate increasing of standard, to reduce screw tap and workpiece
Friction.Ultrafine gain size and ordinary rigid alloy hardness under the same conditions, intensity is higher；The identical feelings of intensity
Under condition, hardness is higher.Be primarily due to: particle becomes smaller, the cobalt between WC (tungsten carbide) and WC can be thinning, thus resist plasticity change
The bending strength of shape increases.WC, metallic cobalt of the ultrafine crystal grain hard alloy material by ultra-fine grain tungsten carbide i.e. 0.5 μm
Co, carbide vanadium vc and chromium carbide Cr3C2 are formed, the weight percent between each component are as follows: WC: Co: VC: Cr3C2 is equal to 90
~92.5: 7~9: 0.1~0.5: 0.3~0.7.The material had not only had very high hardness and wear-resisting property, but also had very high
Intensity and toughness.
Further technical solution is that its crystallite dimension of ultrafine gain size is at 0.5 micron or less；The Ultra-fine Grained
Its anterior angle of grain carbide-tipped milling cutter is 8~15 °, relief angle is 9~18 °；Described its anterior angle of high-speed steel milling cutter is 9~17 °, relief angle is
11~22 °.Relative to universal standard milling cutter, the smooth milling of titanium alloy is enabled using lesser anterior angle and biggish relief angle.
Lesser anterior angle and biggish relief angle are used to increase the contact length of chip and rake face, reduces rubbing for workpiece and flank
It wipes, point of a knife uses arc transition sword to improve intensity, avoids wedge angle scaling loss and tipping.
Further technical solution is that titanium alloy blank is α alloy or beta alloy or alpha+beta titanium alloys.α alloy is that α phase is stabilized
Element and neutral element are solid-solution in single-phase alloy formed in α phase, and for this titanium alloy blank, material can use Ti-
5Al-2.5Sn, such alloy high and low temperature performance is stable, and ductility and resistance to creep are good.In alpha+beta alloy, the content of α and β phase by
α stabilizes element and the influence of the stable element of β is very big, also has in performance dramatically different.The few then alloy behavior of β phase content is similar to α
Alloy, on the contrary the few then alloy behavior of α phase content is similar to beta alloy.Ti-6Al-4V can be used.The more person of β phase content has Ti-
6Al-6V-2Sn and Ti-6Al-2Sn-4Zr-6Mo etc..Beta alloy at normal temperature subject to stabilize body centred cubic packing (BCC) knot
Structure is single beta phase alloy.Cold processability of such alloy is preferred compared with alpha+beta alloy, and tensile strength is reachable after age-hardening processing
150kgf/mm2, yield strength is up to 140kgf/mm2.Can be used Ti-15V-3Cr-3Su-3Al, Ti-10V-2Fe-3Al and
Ti-13V-11Cr-3Al etc..Titanium alloy raw material have several profiles it can be selected that first is that pipe as motor case molded substrate
Material, second is that plate, third is that wire rod.
Further technical solution is that titanium alloy blank is α alloy, and the anterior angle A of milling cutter is 13 °~17 °, milling cutter
The relief angle B of tool is 16 °~22 °.For α alloy compared to beta alloy or alpha+beta titanium alloys, hardness is higher, after pressure machining characteristics are not so good as
The two, plasticity is bad, therefore is easy tipping, so (herein referred in the range of small anterior angle using big anterior angle and big relief angle
Using biggish preceding angle value), the friction for reducing the contact length of chip and rake face and reduction workpiece and flank can be avoided
The problem of tipping.
Further technical solution is that titanium alloy blank is beta alloy, and the anterior angle A of milling cutter is 8 °~10 °, milling cutter
The relief angle B of tool is 9 °~12 °.Beta alloy plasticity is good, but the problem of more strengthen the big ductile property of titanium alloy, knife easy to stick (viscous knife
Main cause: being material poor radiation, and ductility is big, and titanium alloy is exactly the material for being easy viscous knife), therefore use small anterior angle
And small relief angle, increase the contact length of chip and rake face and increases the friction of workpiece and flank (convenient for gluing bits from adhesion
Rake face, fall off in flank).
Further technical solution is that titanium alloy is alpha+beta titanium alloys, and the anterior angle A of milling cutter is 10 °~14 °, milling cutter
The relief angle B of tool is 11 °~20 °, and the mass percentage content X of α phase is 4%~6% in alpha+beta titanium alloys, anterior angle A, relief angle B and three
Relationship between person is as follows: A=100 × (1.67~3.50) X；B=(0.79~2) A.Metal material plasticity is better, and deformation is anti-
Power is smaller, and pressure machining characteristics are better.And the presence of β phase can improve pressure machining characteristics, so in alpha+beta titanium alloys, β
Mutually more, plasticity is better；,,；
Further technical solution is, twice its rolling temperature of rolling process be respectively 900 DEG C~950 DEG C, 860 DEG C~
890 DEG C, titanium alloy blank is made annealing treatment after secondary rolling, annealing temperature is 730 DEG C~760 DEG C, and the type of cooling is sky
It is cold.
The performance indicator of final products is specific as follows: density of material range is 4g/cm3-4.8g/cm3；Motor case is without magnetic
Property；Thermal conductivity/W (mk): 100-160；Tensile strength >=950Mpa, yield strength >=900Mpa.
The advantages and beneficial effects of the present invention are: using hard alloy cutter, such as tungsten-cobalt series hard alloy and titanium alloy
Chemical affinity is small, thermal conductivity is good, intensity is also higher.Impact-resistant ultra-fine grain hard is selected to close under low speed when interrupted cut
Gold, and shape and the complex cutting tool then high-speed steel good with high-temperature behavior, reach final desired shape of product by cutting twice
Structure can be properly arrived at the requirement of final products, overcome titanium alloy using milling twice and twice using different milling cutters
Not easily molded, the not easy to be processed problem of its material.Titanium alloy milling because milling is interrupted cut, and is cut than turning difficulty
Bits are easily bonded with blade, and when the cutter tooth of viscous bits cuts workpiece again, viscous consider to be worth doing is touched down and takes away a fritter cutter material,
Tipping is formed, cutting wear is significantly reduced.Therefore the milling mode of climb cutting is taken to titanium alloy milling, using compared with
Small anterior angle and biggish relief angle enable the smooth milling of titanium alloy；Lesser anterior angle and biggish relief angle is used to cut to increase
The contact length of bits and rake face, reduces the friction of workpiece and flank, and point of a knife uses arc transition sword to improve intensity, avoids
Wedge angle scaling loss and tipping.For α alloy compared to beta alloy or alpha+beta titanium alloys, hardness is higher, and pressure machining characteristics are not so good as rear the two,
Plasticity is bad, therefore is easy tipping, so using big anterior angle and big relief angle (herein refer in the range of small anterior angle using compared with
Big preceding angle value), the friction for reducing the contact length of chip and rake face and reduction workpiece and flank can be avoided tipping
Problem.Beta alloy plasticity is good, but (the main reason for viscous knife: being material the problem of more strengthen the big ductile property of titanium alloy, knife easy to stick
Expect poor radiation, ductility is big, and titanium alloy is exactly the material for being easy viscous knife), therefore small anterior angle and small relief angle are used, increase
Friction (rake face, the rear knife convenient for viscous bits from adhesion of the contact length and increase workpiece and flank of big chip and rake face
It falls off on face).
Specific embodiment
With reference to embodiment, the specific embodiment of the present invention is further described.Following embodiment is only used for more
Add and clearly demonstrate technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment one:
The present invention is the processing technology of titanium alloy brushless motor shell, is comprised the technical steps that: first by titanium alloy hair
Base strikes out the shape of motor case, and Milling Process is then carried out by the way of climb cutting；Punching press is being carried out to titanium alloy blank
Before further include titanium alloy crude green body rolling process twice；It is Milling Process twice in Milling Process process, is for the first time milling speed
Degree is the low speed interrupted cut of 30~60m/min, and the material of milling cutter used is ultrafine gain size, and second is milling
The material for cutting the form milling that speed is 15~35m/min and milling cutter used is high-speed steel M42.Ultrafine gain size
Its crystallite dimension is at 0.5 micron or less；Described its anterior angle of ultrafine gain size milling cutter is 8~15 °, relief angle is 9~18 °；
Described its anterior angle of high-speed steel milling cutter is 9~17 °, relief angle is 11~22 °.Titanium alloy blank is α alloy, the anterior angle A of milling cutter
It is 13 °~17 °, the relief angle B of milling cutter is 16 °~22 °.Its rolling temperature of rolling process is respectively 900 DEG C~950 twice
DEG C, 860 DEG C~890 DEG C, titanium alloy blank is made annealing treatment after secondary rolling, annealing temperature be 730 DEG C~760 DEG C, it is cold
But mode is air-cooled.
Embodiment two:
With being different only in that for embodiment one, titanium alloy blank is beta alloy, and the anterior angle A of milling cutter is 8 °~10 °, milling
The relief angle B of cutting knife tool is 9 °~12 °.
Embodiment three:
With being different only in that for embodiment one, titanium alloy is alpha+beta titanium alloys, and the anterior angle A of milling cutter is 10 °~14 °, milling
The relief angle B of cutting knife tool is 11 °~20 °, and the mass percentage content X of α phase is 4%~6% in alpha+beta titanium alloys, anterior angle A, relief angle B
And the relationship between three is as follows: A=100 × (1.67~3.50) X；B=(0.79~2) A.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. the processing technology of titanium alloy brushless motor shell, which is characterized in that including successively processing step as follows: first closing titanium
Golden blank strikes out the shape of motor case, and Milling Process milling is then carried out by the way of climb cutting to the motor case of square tube type
Square hole out；It further include titanium alloy crude green body rolling process at least twice before carrying out punching press to titanium alloy blank；Milling Process work
It is Milling Process twice in sequence, the low speed interrupted cut for being for the first time 30~60m/min for Milling Speed, milling cutter used
Material is ultrafine gain size, is for the second time form milling and milling cutter used that Milling Speed is 15~35m/min
Material be high-speed steel M42.
2. the processing technology of titanium alloy brushless motor shell as described in claim 1, which is characterized in that the ultra-fine grain is hard
Its crystallite dimension of matter alloy is at 0.5 micron or less；Described its anterior angle of ultrafine gain size milling cutter is 8~15 °, relief angle 9
~18 °；Described its anterior angle of high-speed steel milling cutter is 9~17 °, relief angle is 11~22 °.
3. the processing technology of titanium alloy brushless motor shell as claimed in claim 1 or 2, which is characterized in that the titanium alloy
Blank is α alloy or beta alloy or alpha+beta titanium alloys.
4. the processing technology of titanium alloy brushless motor shell as claimed in claim 3, which is characterized in that the titanium alloy blank
For α alloy, the anterior angle A of milling cutter is 13 °~17 °, and the relief angle B of milling cutter is 16 °~22 °.
5. the processing technology of titanium alloy brushless motor shell as claimed in claim 3, which is characterized in that the titanium alloy blank
For beta alloy, the anterior angle A of milling cutter is 8 °~10 °, and the relief angle B of milling cutter is 9 °~12 °.
6. the processing technology of titanium alloy brushless motor shell as claimed in claim 3, which is characterized in that the titanium alloy be α+
Beta-titanium alloy, the anterior angle A of milling cutter are 10 °~14 °, and the relief angle B of milling cutter is 11 °~20 °, α phase in alpha+beta titanium alloys
Mass percentage content X is 4%~6%, and the relationship between anterior angle A, relief angle B and three is as follows: A=100 × (1.67~
3.50)X；B=(0.79~2) A.
7. the processing technology of titanium alloy brushless motor shell as claimed in claim 3, which is characterized in that twice rolling process its
Rolling temperature is respectively 900 DEG C~950 DEG C, 860 DEG C~890 DEG C, makes annealing treatment, moves back to titanium alloy blank after secondary rolling
Fiery temperature is 730 DEG C~760 DEG C, and the type of cooling is air-cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618788.5A CN110303300A (en) | 2019-07-10 | 2019-07-10 | The processing technology of titanium alloy brushless motor shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618788.5A CN110303300A (en) | 2019-07-10 | 2019-07-10 | The processing technology of titanium alloy brushless motor shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110303300A true CN110303300A (en) | 2019-10-08 |
Family
ID=68080790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910618788.5A Pending CN110303300A (en) | 2019-07-10 | 2019-07-10 | The processing technology of titanium alloy brushless motor shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110303300A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202114325U (en) * | 2011-05-19 | 2012-01-18 | 沈阳飞机工业（集团）有限公司 | TA15 titanium alloy finish machining cobalt high speed steel end milling cutter |
| CN108055801A (en) * | 2014-12-31 | 2018-05-18 | 广东欧珀移动通信有限公司 | Terminal shell and its terminal of application and terminal shell production method |
| CN108372389A (en) * | 2018-01-17 | 2018-08-07 | 昆山腾荣机械有限公司 | A kind of Sheet Metal Forming Technology of New energy automobile motor shell |
-
2019
- 2019-07-10 CN CN201910618788.5A patent/CN110303300A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202114325U (en) * | 2011-05-19 | 2012-01-18 | 沈阳飞机工业（集团）有限公司 | TA15 titanium alloy finish machining cobalt high speed steel end milling cutter |
| CN108055801A (en) * | 2014-12-31 | 2018-05-18 | 广东欧珀移动通信有限公司 | Terminal shell and its terminal of application and terminal shell production method |
| CN108372389A (en) * | 2018-01-17 | 2018-08-07 | 昆山腾荣机械有限公司 | A kind of Sheet Metal Forming Technology of New energy automobile motor shell |
Non-Patent Citations (3)
| Title |
|---|
| 吴广东: "TA15钛合金结构件高效铣削解决方案研究", 《工具技术》 * |
| 曹振宇: "钛合金的铣削加工", 《工具技术》 * |
| 苏雍贵: "TC-4钛合金的铣削加工", 《机械制造》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5608269B2 (en) | Composite materials | |
| KR101465252B1 (en) | Insert for milling of cast iron | |
| CN107052476B (en) | A kind of low damage processing technology of Continuous Fiber Reinforced Ceramic Matrix Composites screw thread | |
| JPS5823457B2 (en) | Tough cermet | |
| CN103418822A (en) | Rough milling cutter for rotor and wheel groove of steam turbine and manufacturing technology of rough milling cutter | |
| CN103834842A (en) | TiCN-based metal ceramic numerical control tool material with nanocrystalline grain size and preparation method thereof | |
| CN102049559A (en) | Method for quickly choosing numerical-control milling tool | |
| JPS6089574A (en) | Surface-coated sintered hard alloy member for cutting tool and wear-resistant tool | |
| CN104227019A (en) | Cutting technology for thin-wall titanium alloy part | |
| CN109280837B (en) | Hard alloy cutter and preparation method thereof | |
| CN103433543A (en) | Ball end mill structure | |
| US4290807A (en) | Hard alloy and a process for the production of the same | |
| CN110303300A (en) | The processing technology of titanium alloy brushless motor shell | |
| Sortino et al. | Innovative tool coatings for increasing tool life in milling Nickel-coated Nickel-Silver alloy | |
| CN203390273U (en) | End milling cutter structure | |
| EP0364975B1 (en) | Hobbing tool for finishing gears | |
| CN101745680A (en) | Cemented carbide profile milling cutter with large helix angle | |
| JPH08502213A (en) | End mill tool | |
| CN203390276U (en) | Ball-end milling cutter structure | |
| JPS6067638A (en) | Cermet for cutting tool and hot processing tool | |
| CN220679485U (en) | Milling cutter | |
| CN220388140U (en) | Four transposition gear hobs of super large modulus | |
| CN216065817U (en) | Alloy coating composite internal cooling reamer for precision machining of valve body holes | |
| CN109972017B (en) | Cemented carbide tool material for high-speed cutting and method for manufacturing cemented carbide tool | |
| JPS585981B2 (en) | Tough cermet containing titanium nitride |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191008 |
|
| RJ01 | Rejection of invention patent application after publication |