CN101125377A - Step rear face rotor forming milling cutter and processing technology thereof - Google Patents
Step rear face rotor forming milling cutter and processing technology thereof Download PDFInfo
- Publication number
- CN101125377A CN101125377A CNA2007100501912A CN200710050191A CN101125377A CN 101125377 A CN101125377 A CN 101125377A CN A2007100501912 A CNA2007100501912 A CN A2007100501912A CN 200710050191 A CN200710050191 A CN 200710050191A CN 101125377 A CN101125377 A CN 101125377A
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- cutter
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- milling cutter
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- rotor
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Abstract
The present invention discloses a milling cutter molded by the rotor on the step back cutter face and machining technology therein. By analyzing the molded line of the rotor wheel slot, the milling time of the milling cutter in normal conditions is determined. In the foundation, the width of the back cutter face is slightly increased to ensure that the cutter blade has enough intensity; the remaining needless back cutter face undergoes pretreatment to ensure not machining the place in the subsequent milling machining of the back cutter face. As the milling area of the back cutter face is reduced, the milling efficiency of the cutter is greatly improved; meanwhile, as the milling quantity of the cutter is small, the precision of the molded line of the grinding wheel can maintain longer and the service life of a same grinding wheel can be prolonged, which further improves the milling efficiency and the cutter precision; moreover, the invention reduces the machining cost of the rotor wheel slot milling cutter and promises the performance of the cutter not be affected. Moreover, the present invention structure is not only applicable to the relieving cutter, but also effective to the sharp-tooth cutter.
Description
Technical field
The present invention relates to a kind of dedicated tool of turbomachinery, especially a kind of step rear face rotor forming milling cutter and processing technology thereof are suitable for the processing of rotor groove molded lines.
Background technology
At present, no matter be in the processing of domestic or external rotor groove molded lines, main what use is whole or to the high-speed steel milling cutter of welding structure.Its main cause is that the turbomachinery rotor involves great expense, the molded lines complexity of race, and molded lines surface accuracy and roughness require high.Its molded lines surface does not allow to occur any quality problems.Simultaneously because the whole hard alloy milling cutter is difficult for accomplishing molded lines cutter necessary diameter, perhaps just accomplished necessary diameter at last, its price also is very expensive, moreover the hard alloy cutter cutting edge can't accomplish very sharply, is very disadvantageous for the processing for this material.And high-speed steel milling cutter price is comparatively cheap comparatively speaking, it has good red hardness and toughness simultaneously, be not easy in Milling Process to occur that cutter fractures and the tipping phenomenon, reach the surface quality requirement of molded lines of rotor face harshness easily, so be widely used in this field.
The milling cutter of processing such molded lines generally carries out grinding with whole back knife face during fabrication, and according to the varying in size of cutter, back knife face width from 3mm to 50mm more than, cause the manufacturing time of whole cutter very long, seriously delay the production cycle.Because back knife face grinding area is bigger, cause the whole grinding time long simultaneously, the molded lines abrasion of grinding wheel is bigger, is not easy to guarantee the precision of rotor milling cutter.Though carry out the length that roughing can reduce grinding face when finish grinding if adopt increasing back-off amount, but can't accomplish the ideal length of back knife face, and after strengthening the back-off amount, because the characteristics of spiral of Archimedes, minimum diameter place grinding at milling cutter is more, cause minimum tooth place intensity very poor, cause the little head rupture of milling cutter easily, cause the accident.
And the width of rotor groove molded lines has strict tolerance, cause all such milling cutters not have reconditioning value or the reconditioning number of times less, the back knife face that all processes has not been given play to effectiveness fully, is a kind of waste.
Summary of the invention
One of purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, and its structure is improved, and designs a kind of step rear face rotor forming milling cutter.
Two of purpose of the present invention is the processing technologys that solve this milling cutter, produces this rotor forming milling cutter.
The objective of the invention is such realization: by the rotor groove molded lines is analyzed, determine the reconditioning number of times of this milling cutter under regular service conditions, increase the width of back knife face on this basis a little, to guarantee that cutting edge roundness has enough intensity, all the other unwanted back knife faces are anticipated, guarantee when the back knife face carries out grinding, not reprocess this position.Because the grinding area of back knife face has lacked, tool grinding efficient improves greatly, and the knife face stock removal is few behind the cutter simultaneously, and the precision of emery wheel molded lines just can keep more for a long time, and increase the service time of same emery wheel, further improved the precision of efficient and cutter.
Good effect of the present invention is: by above-mentioned improvement, improved the production efficiency of rotor groove milling cutter, reduced the processing cost of rotor groove milling cutter, and cutting performance does not have loss yet.Simultaneously, structure of the present invention is not only applicable to relieving tool, and is effective equally for the pointed tooth cutter.
Description of drawings
Fig. 1 is a cutter original structure schematic diagram.
The left view of Fig. 2 Fig. 1.
Fig. 3 is the blade profile of Fig. 1.
Fig. 4 is the cutter structure schematic diagram after the present invention improves.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is Fig. 5 blade profile.
Code name implication among the figure: 1 blade molded lines part, 2 shank K back-off amounts
The specific embodiment
With reference to Fig. 1-Fig. 6, by the rotor groove molded lines is analyzed, determine the reconditioning number of times of this milling cutter under regular service conditions, increase the width of back knife face on this basis a little, to guarantee that cutting edge roundness has enough intensity, all the other unwanted back knife faces are anticipated, preprocess method: need pretreated back knife face than former cutting edge sinking 0.7～1mm (see figure 6), imitate the processing of back-off on this basis again.So just can guarantee when the back knife face carries out grinding, not reprocess this position.Because the grinding area of back knife face has dwindled, tool grinding efficient improves greatly.Owing to knife face stock removal behind the cutter is few, the precision of emery wheel molded lines keeps more for a long time simultaneously, and increase the service time of same emery wheel, has further improved the precision of efficient and cutter.
Cutter processing for this spline structure at first utilizes three-dimensional software, sets up the model of cutter and works out out nc program.After the molded lines of cutter and groove processing finish, utilize the CNC milling machine will back knife face sinking place completion of processing, then carry out conventional rotor milling cutter heat treatment, during the correct grinding molded lines, only the seamed edge of reserving need be ground and get final product.
Claims (2)
1. a step rear face rotor forming milling cutter comprises blade molded lines part and shank, it is characterized in that: the back knife face structure with stepped ramp type.
2. the processing technology of a step rear face rotor forming milling cutter as claimed in claim 1:
1. utilize three-dimensional software, set up the model of cutter and work out out nc program;
2. after the molded lines of cutter and groove processing finish, utilize CNC milling machine with back knife face sinking place completion of processing;
3. then carry out conventional rotor milling cutter heat treatment;
When 4. finish grinding molded lines, only the seamed edge of reserving need be ground and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100501912A CN101125377A (en) | 2007-09-30 | 2007-09-30 | Step rear face rotor forming milling cutter and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100501912A CN101125377A (en) | 2007-09-30 | 2007-09-30 | Step rear face rotor forming milling cutter and processing technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101125377A true CN101125377A (en) | 2008-02-20 |
Family
ID=39093555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100501912A Pending CN101125377A (en) | 2007-09-30 | 2007-09-30 | Step rear face rotor forming milling cutter and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101125377A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328127A (en) * | 2011-09-22 | 2012-01-25 | 山东理工大学 | Superfine tapered ball end milling cutter |
| CN103111820A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN103921090A (en) * | 2014-04-28 | 2014-07-16 | 哈尔滨汽轮机厂有限责任公司 | Machining method of wheel groove semi-finish milling cutter |
| CN105269285A (en) * | 2015-10-29 | 2016-01-27 | 江苏中晟钻石工具有限公司 | Preparation method of abrasion-resistant PCD trapezoidal-groove milling cutter |
| CN105364156A (en) * | 2015-12-07 | 2016-03-02 | 四川成发航空科技股份有限公司 | Molding milling cutter with cutter aligning structure |
-
2007
- 2007-09-30 CN CNA2007100501912A patent/CN101125377A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328127A (en) * | 2011-09-22 | 2012-01-25 | 山东理工大学 | Superfine tapered ball end milling cutter |
| CN102328127B (en) * | 2011-09-22 | 2013-04-10 | 山东理工大学 | Superfine tapered ball end milling cutter |
| CN103111820A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN103111820B (en) * | 2013-03-20 | 2014-12-24 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN103921090A (en) * | 2014-04-28 | 2014-07-16 | 哈尔滨汽轮机厂有限责任公司 | Machining method of wheel groove semi-finish milling cutter |
| CN105269285A (en) * | 2015-10-29 | 2016-01-27 | 江苏中晟钻石工具有限公司 | Preparation method of abrasion-resistant PCD trapezoidal-groove milling cutter |
| CN105364156A (en) * | 2015-12-07 | 2016-03-02 | 四川成发航空科技股份有限公司 | Molding milling cutter with cutter aligning structure |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |