CN103978255B - Composite milling cutter for machining different-diameter holes - Google Patents

Composite milling cutter for machining different-diameter holes Download PDF

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Publication number
CN103978255B
CN103978255B CN201410228598.XA CN201410228598A CN103978255B CN 103978255 B CN103978255 B CN 103978255B CN 201410228598 A CN201410228598 A CN 201410228598A CN 103978255 B CN103978255 B CN 103978255B
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China
Prior art keywords
cutter
milling
blade
groove
cutting
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CN201410228598.XA
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Chinese (zh)
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CN103978255A (en
Inventor
谢宁
程绍杨
韩伯君
陈青月
王建刚
孟子茹
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CNNC Tianjin Machinery Co Ltd
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CNNC Tianjin Machinery Co Ltd
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Abstract

The invention discloses a composite milling cutter for machining different-diameter holes. The composite milling cutter comprises a cutter handle, a main cooling pipe and a cutting part, wherein the cutter handle is connected with a machine tool, the main cooling pipe is arranged in the cutter handle, and the cutting part is arranged at the front end of the cutter handle; an arc-shaped clamping groove is formed in the middle of the cutter handle, and chip removal grooves are uniformly distributed in the cutting part in a circumferential direction; an assembly wall is formed at the front end of a groove wall among the chip removal grooves, and a second cutter groove for inserting a small-hole milling blade is formed in the front end of the assembly wall; a first cutter groove for inserting a large-hole milling blade is formed in the transition position of the assembly wall and the groove wall, and the assembly wall and the groove wall are stepped; first cooling holes and second cooling holes, which are communicated with the main cooling pipe, are formed in the positions, close to the groove wall, in the chip removal grooves; the first cooling holes and the second cooling holes are respectively higher than the first cutter groove and the second cutter groove. The composite milling cutter can be used for machining the different-diameter holes in one time, a curved edge in the large-hole milling blade can machine a manhole fillet of the top of a small hole, and the phenomenon that the top of the small hole can generate burrs in the process of pulling out the composite milling cutter is avoided. The composite milling cutter has the advantages of high machining efficiency and long service life.

Description

Process the composite milling cutter of different diameter hole
Technical field
The invention belongs to milling cutter field, and in particular to a kind of composite milling cutter of processing different diameter hole.
Background technology
Milling cutter, is for Milling Process, the rotary cutter with one or more cutters tooth.During work each cutter tooth successively between Cut the surplus of workpiece with having a rest.Milling cutter is mainly used in processing plane, step, groove, profiled surface and cut-out workpiece on milling machine Deng.
Milling cutter can be further divided into again according to purposes, cylindrical milling cutter, face milling cutters, slotting cutter, face and side cutter, angle Milling cutter, metal saw and T-shaped milling cutter.Milling cutter can be divided into monoblock type milling cutter, entirety by the assembling form according to milling cutter and cutter hub Weld tooth-like milling cutter, inserted tooth milling cutter, indexable formula milling cutter.
With the development of milling cutter industry, milling cutter is also widely used on hole machined and pocket machining direction.The milling in hole Cut processing to be widely used in machining industry, especially apply in space industry, automotive engine applications and complexity Equipment field is in the processing in complicated hole.The processing of various composite holes to machine tool and the requirement more and more higher of cutter, not only Meeting requirement on machining accuracy will also ensure cutter life, while processing cost is low.
At present, the processing of different diameter hole is main is carried out using alloy bit and the combined form of slotting cutter, and alloy is used first Drill bit roughing small size pores and large aperture hole successively, then finish small size pores and large aperture hole successively with slotting cutter, apply The above method is processed not only long processing time to different diameter hole, and Cutter wear is serious, and the replacing cutter that takes place frequently causes to add Work high cost.
The content of the invention
The present invention is proposed to solve the problems, such as prior art, the purpose is to provide a kind of the compound of processing different diameter hole Milling cutter.
The technical scheme is that:A kind of composite milling cutter for processing different diameter hole, including handle of a knife, the handle of a knife being connected with lathe Internal main cooling tube, the cutting portion of front end, handle of a knife middle part forms arcuation draw-in groove, and chip area is evenly distributed in cutting portion, arranges Cell wall front end between bits groove forms fit walls, and fit walls front end is provided with the second cutter groove of insertion milling aperture blade, fit walls The first cutter groove for inserting milling macropore blade is provided with the transition position of cell wall, the fit walls are stepped with cell wall, chip area In formation connect with main cooling tube at the cell wall the first Cooling Holes, the second Cooling Holes, the first described Cooling Holes are higher than the One cutter groove, the second Cooling Holes are higher than the second cutter groove.
Described milling macropore blade include sickle -shaped first installation portion and unlimited place be sequentially connected pass through first time side edge, Circular Nose Cutting Edge, the first chisel edge, side edge on first, first cutter groove coordinate with the first installation portion.
Described milling aperture blade includes that the second installation portion of arcuation and unlimited place are sequentially connected the second chisel edge, second passed through Side edge, second cutter groove coordinates with the second installation portion.
Cutter blade is connected in cutter groove by silver-alloy brazing, and described milling macropore blade, milling aperture blade are diamond blade.
The chip area is arc surface with cutting portion joint face.
First Cooling Holes, the second Cooling Holes and main cooling tube are inclined and connected, the first Cooling Holes, the second Cooling Holes to Cutting portion front end inclines.
Composite milling cutter of the invention can disposably process different diameter hole, simplify operation, improve production efficiency, milling macropore Circular Nose Cutting Edge in blade can be processed and enter hole fillet at the top of aperture, and be avoided small during composite milling cutter is extracted Hole top can produce the phenomenon of burr, high in machining efficiency, long service life of the invention.
Brief description of the drawings
Fig. 1 is front view of the invention;
Fig. 2 is the partial enlarged drawing in A portions in Fig. 1 of the present invention;
Fig. 3 is upward view of the invention;
Fig. 4 is the structural representation of milling macropore blade in the present invention;
Fig. 5 is the structural representation of milling aperture blade in the present invention.
Wherein:
The main cooling tube of 1 handle of a knife 2
The cutting portion of 3 draw-in groove 4
The Cooling Holes of 5 chip area 6 first
The fit walls of 7 second Cooling Holes 8
The cutter groove of 9 milling macropore blade 10 first
The cutter groove of 11 milling aperture blade 12 second
The installation portion of 13 cell wall 14 first
15 first time Circular Nose Cutting Edge of side edge 16
Side edge on 17 first chisel edges 18 first
The chisel edge of 19 second installation portion 20 second
21 second side edges.
Specific embodiment
Hereinafter, referring to the drawings and embodiment the present invention is described in detail:
It is a kind of to process the composite milling cutter of different diameter hole as shown in Fig. 1 ~ 5, including be connected with lathe handle of a knife 1, inside handle of a knife 1 Main cooling tube 2, front end cutting portion 4, the middle part of handle of a knife 1 forms arcuation draw-in groove 3, chip area 5 is evenly distributed in cutting portion 4, Cell wall front end between chip area 5 forms fit walls 8, and the front end of fit walls 8 is provided with the second cutter groove of insertion milling aperture blade 11 12, fit walls 8 are provided with the first cutter groove 10 of insertion milling macropore blade 9, the fit walls 8 and cell wall with the transition position of cell wall 13 13 is stepped, formation is connected with main cooling tube 2 at cell wall 13 in chip area 5 the first Cooling Holes 6, the second Cooling Holes 7, The first described Cooling Holes 6 are higher than the first cutter groove 10, and the second Cooling Holes 7 are higher than the second cutter groove 12.
Described milling macropore blade 9 is used for the large diameter hole processed in different diameter hole, and described milling aperture blade 11 is used for adding Small inner diameter hole in work different diameter hole.
Described milling macropore blade 9 includes that sickle -shaped first installation portion 14 and unlimited place are sequentially connected the first downside passed through Side edge 18 on sword 15, Circular Nose Cutting Edge 16, the first chisel edge 17, first, first cutter groove 10 coordinates with the first installation portion 14.
Described milling aperture blade 11 includes that the second installation portion 19 of arcuation and unlimited place are sequentially connected the second chisel edge for passing through 20th, the second side edge 21, second cutter groove 12 coordinates with the second installation portion 19.
Cutter blade is connected in cutter groove by silver-alloy brazing, and described milling macropore blade 9, milling aperture blade 11 are diamond tool Piece.
The chip area 5 is arc surface with the joint face of cutting portion 4.
First Cooling Holes 6, the second Cooling Holes 7 are inclined with main cooling tube 2 and connected, the first Cooling Holes 6, the second Cooling Holes 7 incline to the front end of cutting portion 4.
Handle of a knife 1 in the present invention is preferably BT40 handle of a knifes.
The right-hand member of the first chisel edge 17 of milling macropore blade 9 is downward-sloping in the present invention, and first chisel edge 17 can be by reducing Transition face processing tapering in hole between large diameter hole and diameter holes is 1:6 conical surface, is easy to the assembling of different diameter hole to use.
Milling macropore blade 9, the cutting of milling aperture blade 11 position are respectively formed cutting anterior angle α and back angle β in the present invention.
The function of the cutting anterior angle α is to make cutting edge more sharp, reduces cutting deformation and reduces cutting force, excessive Cutting anterior angle can influence intensity and the radiating of cutting edge.And when different materials are processed, the anterior angle of cutting is slightly different, such as milling When cutting steel part, cutting anterior angle is 10 ° ~ 20 °;During milling cast iron, cutting anterior angle is 5 ° ~ 15 °, during milling hard alloy, before cutting Angle is 5 ° ~ 10 °, and the cutting anterior angle α at milling macropore blade 9, milling aperture blade 11 the cutting position in the present invention is in scope allowable Smaller value is inside taken, extends the service life of cutting edge.
The back angle β be mainly reduce after friction between knife face and finished work, so as to improve workpiece surface Finish, the back angle β in the present invention takes higher value in scope allowable, so as to improve the quality of workpiece.
Composite milling cutter of the invention can disposably process different diameter hole, simplify operation, improve production efficiency, milling macropore Circular Nose Cutting Edge in blade can be processed and enter hole fillet at the top of aperture, and be avoided small during composite milling cutter is extracted Hole top can produce the phenomenon of burr, high in machining efficiency, long service life of the invention.

Claims (2)

1. a kind of composite milling cutter for processing different diameter hole, including the handle of a knife being connected with lathe(1), handle of a knife(1)Internal main cooling tube (2), front end cutting portion(4), it is characterised in that:Handle of a knife(1)Middle part forms arcuation draw-in groove(3), cutting portion(4)In it is circumferentially equal Cloth chip area(5), chip area(5)Between cell wall front end formed fit walls(8), fit walls(8)It is small that front end is provided with insertion milling Hole blade(11)The second cutter groove(12), fit walls(8)With cell wall(13)Transition position be provided with insertion milling macropore blade(9)'s First cutter groove(10), the fit walls(8)With cell wall(13)It is stepped, chip area(5)In near cell wall(13)Place formed with Main cooling tube(2)First Cooling Holes of connection(6), the second Cooling Holes(7), described the first Cooling Holes(6)Higher than the first cutter groove (10), the second Cooling Holes(7)Higher than the second cutter groove(12), described milling macropore blade(9)Including sickle -shaped first installation portion (14)The first time side edge for passing through is sequentially connected with unlimited place(15), Circular Nose Cutting Edge(16), the first chisel edge(17), side edge on first (18), first cutter groove(10)With the first installation portion(14)Coordinate, described milling aperture blade(11)Including arcuation second Installation portion(19)The second chisel edge for passing through is sequentially connected with unlimited place(20), the second side edge(21), second cutter groove(12)With Two installation portions(19)Coordinate, the chip area(5)With cutting portion(4)Joint face is arc surface, first Cooling Holes(6), Two Cooling Holes(7)With main cooling tube(2)Incline connection, the first Cooling Holes(6), the second Cooling Holes(7)To cutting portion(4)Front end Incline, the milling macropore blade(9)Cutting position is in 7 fonts.
2. it is according to claim 1 it is a kind of process different diameter hole composite milling cutter, it is characterised in that:Cutter blade passes through silver-alloy brazing It is connected in cutter groove, and described milling macropore blade(9), milling aperture blade(11)It is diamond blade.
CN201410228598.XA 2014-05-28 2014-05-28 Composite milling cutter for machining different-diameter holes Active CN103978255B (en)

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Application Number Priority Date Filing Date Title
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CN103978255B true CN103978255B (en) 2017-05-17

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Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN104907619A (en) * 2015-06-24 2015-09-16 昆山科森科技股份有限公司 MCD arc-surface-milling cutter
CN107138779B (en) * 2016-03-01 2020-09-29 北新集团建材股份有限公司 Panel edge milling device
CN106964826B (en) * 2017-05-11 2019-06-18 天津大学 Helical milling-counter boring-rounded corner integrated cutter
CN112692527A (en) * 2020-12-17 2021-04-23 昆山市优捷科自动化设备有限公司 Machining method of cutting knife saw

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CN202824794U (en) * 2012-09-21 2013-03-27 海门市沪海有色铸造有限公司 Inner conductor bearing surface machining tool for high-voltage electric main bus support cylinder
CN202951914U (en) * 2012-11-26 2013-05-29 四平市方向机械有限公司 Shell notch chamfering tool
CN203356695U (en) * 2013-07-31 2013-12-25 大连交通大学 Combined machining cutter
CN203459732U (en) * 2013-09-16 2014-03-05 无锡市蠡湖铸业有限公司 One-step forming cutter for secondary air inlet of pressurizer enclosure

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Publication number Priority date Publication date Assignee Title
EP0715917A1 (en) * 1994-12-06 1996-06-12 Izumi Industry Kabushiki Kaisha Milling cutter for T shaped groove
CN2825180Y (en) * 2005-09-16 2006-10-11 哈尔滨量具刃具集团有限责任公司 Turnable screw end mill
EP2014398A1 (en) * 2007-06-05 2009-01-14 Sandvik Intellectual Property AB An indexable end-milling insert
CN201253705Y (en) * 2008-08-25 2009-06-10 中冶宝钢技术服务有限公司 Milling machine cutter bar
CN201871773U (en) * 2010-10-25 2011-06-22 常州埃特法斯工具有限公司 Four-blade molding interior-cooling cutter
CN102717138A (en) * 2012-06-01 2012-10-10 上海交通大学 Re-constructable formed milling cutter for fine machining of circular-arc-shaped curved mortise of wheel disc
CN202824794U (en) * 2012-09-21 2013-03-27 海门市沪海有色铸造有限公司 Inner conductor bearing surface machining tool for high-voltage electric main bus support cylinder
CN202951914U (en) * 2012-11-26 2013-05-29 四平市方向机械有限公司 Shell notch chamfering tool
CN203356695U (en) * 2013-07-31 2013-12-25 大连交通大学 Combined machining cutter
CN203459732U (en) * 2013-09-16 2014-03-05 无锡市蠡湖铸业有限公司 One-step forming cutter for secondary air inlet of pressurizer enclosure

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