CN201073705Y - Helical flute dual-terraced waveform blade blade-root mill - Google Patents
Helical flute dual-terraced waveform blade blade-root mill Download PDFInfo
- Publication number
- CN201073705Y CN201073705Y CNU2007200723237U CN200720072323U CN201073705Y CN 201073705 Y CN201073705 Y CN 201073705Y CN U2007200723237 U CNU2007200723237 U CN U2007200723237U CN 200720072323 U CN200720072323 U CN 200720072323U CN 201073705 Y CN201073705 Y CN 201073705Y
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- cutter
- milling cutter
- blade
- face
- milling
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Abstract
The utility model relates to a machining cutter, in particular to a dual trapezoidal milling cutter, which is characterized in that the dual trapezoidal waved blade root milling cutter with spiral groove is double-T shaped; a rake angle of the milling cutter is 4 to 10 degrees; a helix angle is 10 to 35 degrees; a plurality of cutting edges of a plurality of cutter teeth are wave-shaped; the cutting edges of a front end face and a rear end face of a plurality of T-shaped cutter teeth in the front row and a rear end face of a plurality of T-shaped cutter teeth in the rear row are perpendicular to an axis of the milling cutter; a combined back angle is arranged on the cutting edge of the cutter teeth. The utility model has the advantages of applicability to numerical control machining center, greatly improved machining efficiency of blades and blade roots of steam turbines, low vibration of the milling cutter and long service life.
Description
Technical field
The utility model relates to a kind of machining cutter, relates in particular to a kind of pair of ladder type milling cutter.
Background technology
In the steam turbine blade root processing, what adopt usually is two ladder type blade root milling cutters (being also referred to as double-T shaped blade root milling cutter), and promptly the front-seat cutter tooth of milling cutter is the T type, and back row's cutter tooth also is the T type, and integral body is double-T shaped structure.This milling cutter is a kind of high accuracy profile milling cutter, in design forms that adopt straight trough zero anterior angle more, and promptly helical angle and anterior angle are 0.This milling cutter can guarantee the precision of milling cutter molded lines and manufacturing thereof, the manufacturability of refacing.But be to use this straight trough blade root milling cutter, the area of cut is big, and cutting load is heavy, causes vibration big, and feed engagement also is restricted, and operating efficiency is not high.
The utility model content
The purpose of this utility model is to provide a kind of helicla flute two ladder type ripple sword blade root milling cutters, and this roughing milling cutter cutting vibration is little, long service life, high efficiency.
The utility model is achieved in that the two ladder type ripple sword blade root milling cutters of a kind of helicla flute, is double-T shaped structure, and the anterior angle of described milling cutter is 4 ° to 10 °, and helical angle is 10 ° to 35 °, and the cutter tooth cutting edge is wave mode along the milling cutter molded lines.
Three place's cutting edges of the front-seat T type cutter tooth front end face of described milling cutter, front-seat T type cutter tooth rear end face and back row T type cutter tooth rear end face are perpendicular to the milling cutter axis, and the cutter tooth cutting edge has compound relief angle.
The preferable anterior angle of described milling cutter is 5 °, and helical angle is 15 °.
The utility model adopts the blade of certain anterior angle, and cutting effect is good; Adopt certain helical angle, cutting blade length is longer than the blade of straight channel type milling cutter in the prior art, and cutting blade does not have full entry cutting, and cutting fluid is infiltrated easily, makes the milling cutter long service life.Adopt the wave mode cutting edge, cutting edge stress is disperseed, cutting vibration is little, cuts that into ability is strong, and thickness of cutting is big, and smear metal is thick chip of lacking, and chip removal is smooth and easy, high efficiency.
Milling cutter of the present utility model adopts the locating clip compact form of staight shank, being fit to the user uses at numerical control machining center, make the blade root of turbine blade process the outmoded technology of having broken away from milling on machine tool, blade root and the intermediate of blade, interior back of the body arc, the leaf top portion of blade are finished at numerical control machining center in the lump, not only shortened the blade manufacturing process flow, and realized the production pattern of one man operation multimachine having improved operating efficiency greatly.
Though innovation of the present utility model comes from the processing of steam turbine blade root, its application is not limited only to process steam turbine blade root, also can be used for processing other various moulding parts that have certain requirements.
Description of drawings
Fig. 1 is the two ladder type ripple sword blade root milling cutter construction schematic diagrames of the utility model helicla flute;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is a C portion partial enlarged drawing among Fig. 1.
Among the figure: 1 front-seat T type cutter tooth (front-seat cutter tooth), 2 back row T type cutters tooth (back row's cutter tooth), 4 milling cutter molded lines, 5 cutting edges, 6 handle of a knifes, 7 first vertical cutting edges, 8 second vertical cutting edges, 9 the 3rd vertical cutting edges; The A anterior angle, the B helical angle.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Fig. 2, the two ladder type ripple sword blade root milling cutters of a kind of helicla flute are double-T shaped structure, and the front-seat cutter tooth 1 of milling cutter front portion is divided into four, is symmetrical distribution, four cutters tooth and handle of a knife 6 formation T-shape structures; Back row's cutter tooth 2 at milling cutter rear portion also is divided into four, is symmetrical distribution, and four cutters tooth and handle of a knife 6 form another T-shape structures.Described milling cutter anterior angle A is 4 ° to 10 °, and helical angle B is 10 ° to 35 °; The anterior angle A that preferred embodiment is adopted is 5 °, and helical angle B is 15 °.Cutter tooth cutting edge 5 is wave mode along milling cutter molded lines 4, and promptly cutter tooth is the wave mode sword along milling cutter molded lines 4, and wave mode thickness extends to angular direction, compound back.Vertical bar line among Fig. 1 in the milling cutter molded lines 4 is promptly represented the crest or the trough of this wave mode, and the length of vertical bar line is represented the thickness that this wave mode is extended to angular direction, compound back from cutting edge 5.Referring to Fig. 3, Fig. 3 has shown the partial enlarged drawing of C portion cutter tooth cutting edge 5 among Fig. 1.Adopt wave mode cutting edge 5, cutting edge stress is disperseed, can reduce cutting vibration, improve cutting quality.
Front-seat T type cutter tooth 1 front end face of described milling cutter is vertical cutting edge with front-seat T type cutter tooth 1 rear end face, be the vertical cutting edge 8 of the first vertical cutting edge 7 with second, back row T type cutter tooth 2 rear end faces also are vertical cutting edge, be the 3rd vertical cutting edge 9, the vertical cutting edge 7,8,9 in three places is all perpendicular to the milling cutter axis, and cutter tooth cutting edge 5 has compound relief angle, guarantees milling cutter molded lines 4 precision after milling cutter is refaced.
After adopting present embodiment, through using proof, its linear velocity, the amount of feeding, cutting depth all have lifting significantly, and stock-removing efficiency has improved 3 times, referring to table 1.
Table 1
Milling cutter of the present utility model is suitable for numerical control machining center to be used, and can improve the working (machining) efficiency of turbine blade blade root greatly, and the milling cutter cutting vibration is little, long service life.
Claims (3)
1. the two ladder type ripple sword blade root milling cutters of helicla flute are double-T shaped structure, and it is characterized in that: the anterior angle of described milling cutter is 4 ° to 10 °, and helical angle is 10 ° to 35 °, and the cutter tooth cutting edge is wave mode along the milling cutter molded lines.
2. the two ladder type ripple sword blade root milling cutters of helicla flute according to claim 1, it is characterized in that: three place's cutting edges of the front-seat T type cutter tooth front end face of described milling cutter, front-seat T type cutter tooth rear end face and back row T type cutter tooth rear end face are perpendicular to the milling cutter axis, and the cutter tooth cutting edge has compound relief angle.
3. the two ladder type ripple sword blade root milling cutters of helicla flute according to claim 1 and 2, it is characterized in that: the preferable anterior angle of described milling cutter is 5 °, helical angle is 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200723237U CN201073705Y (en) | 2007-07-10 | 2007-07-10 | Helical flute dual-terraced waveform blade blade-root mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200723237U CN201073705Y (en) | 2007-07-10 | 2007-07-10 | Helical flute dual-terraced waveform blade blade-root mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201073705Y true CN201073705Y (en) | 2008-06-18 |
Family
ID=39518968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200723237U Expired - Lifetime CN201073705Y (en) | 2007-07-10 | 2007-07-10 | Helical flute dual-terraced waveform blade blade-root mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201073705Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780560A (en) * | 2010-04-12 | 2010-07-21 | 如皋透平叶片制造有限公司 | Blade double inverted T-shaped blade root slot milling cutter of steam turbine |
| CN102099139A (en) * | 2008-08-29 | 2011-06-15 | Osg株式会社 | Throw-away cutting rotary tool |
| CN103111676A (en) * | 2013-02-18 | 2013-05-22 | 山东大学 | High-speed face milling cutter for reducing resistance and noises by utilizing micro grooves in surface |
| US8714885B2 (en) | 2008-11-13 | 2014-05-06 | Osg Corporation | Throwaway rotary cutting tool |
-
2007
- 2007-07-10 CN CNU2007200723237U patent/CN201073705Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102099139A (en) * | 2008-08-29 | 2011-06-15 | Osg株式会社 | Throw-away cutting rotary tool |
| US8807881B2 (en) | 2008-08-29 | 2014-08-19 | Osg Corporation | Throwaway rotary cutting tool |
| CN102099139B (en) * | 2008-08-29 | 2014-10-15 | Osg株式会社 | Throw-away cutting rotary tool |
| US8714885B2 (en) | 2008-11-13 | 2014-05-06 | Osg Corporation | Throwaway rotary cutting tool |
| CN101780560A (en) * | 2010-04-12 | 2010-07-21 | 如皋透平叶片制造有限公司 | Blade double inverted T-shaped blade root slot milling cutter of steam turbine |
| CN103111676A (en) * | 2013-02-18 | 2013-05-22 | 山东大学 | High-speed face milling cutter for reducing resistance and noises by utilizing micro grooves in surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080618 |
|
| CX01 | Expiry of patent term |