CN109794634A - A kind of roughing bulk ceramics milling cutter - Google Patents

A kind of roughing bulk ceramics milling cutter Download PDF

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Publication number
CN109794634A
CN109794634A CN201910162394.3A CN201910162394A CN109794634A CN 109794634 A CN109794634 A CN 109794634A CN 201910162394 A CN201910162394 A CN 201910162394A CN 109794634 A CN109794634 A CN 109794634A
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China
Prior art keywords
cutting edge
angle
milling cutter
edge portion
knife
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Pending
Application number
CN201910162394.3A
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Chinese (zh)
Inventor
杨路
王弢
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Suzhou Ahno Precision Cutting Technology Co Ltd
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Suzhou Ahno Precision Cutting Technology Co Ltd
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Priority to CN201910162394.3A priority Critical patent/CN109794634A/en
Publication of CN109794634A publication Critical patent/CN109794634A/en
Pending legal-status Critical Current

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Abstract

The present invention provides a kind of roughing bulk ceramics milling cutter, the cutting speed block when processing nickel base superalloy improves processing efficiency, and the service life of cutter is long.It includes shank, neck and cutting edge portion, the rear end of the front end connecting neck portion of shank, the rear end of the front end connection cutting edge portion of neck, it is characterized by: the material of milling cutter is Sialon ceramics, cutting edge portion includes cutting edge, chip pocket and chip space, wherein cutting edge is by Zhou Ren, hold sword and the angle point of a knife R composition, the angle point of a knife R is used to connect the Zhou Ren and end sword of corresponding position, Zhou Ren is equipped with rake face and circular arc flank, sword is held to be equipped with rake face and straight flank, the angle point of a knife R is equipped with rake face and circular arc flank, chip pocket is equipped with groove bottom and out knife face, if dry end sword is radially uniformly arranged relative to the front end face of cutting edge portion, each end sword respectively corresponds the angle point of a knife R, one Zhou Ren, Zhou Ren cutting edge portion peripheral ring surface helix to being intervally arranged.

Description

A kind of roughing bulk ceramics milling cutter
Technical field
The present invention relates to the technical field of aerospace field milling cutter, specially a kind of roughing bulk ceramics milling cutter.
Background technique
In recent years, the development of domestic air mail aerospace industry is very swift and violent.With army/civilian big aircraft, invisbile plane, space flight fortune It carries continuous equip such as rocket to come into operation, difficult-to-machine material nickel base superalloy is just got more and more applications.However, due to Components mostly use greatly the processing technology based on solid forging blank, are largely even as high as 90% in NC Machining Process Nickel-base high-temperature alloy material is all removed as clout, and material removal amount is very big, machining deformation control is also extremely difficult.
For the milling process of components, at present mainly using hard alloy and its coating milling cutter come thick/finishing, usually Cutting speed only has 30~60m/min, and processing efficiency is extremely low.This is mainly due to cutting speed is improved, cutting temperature will cause Higher, the Binder Phase cobalt in hard alloy ingredient can be lost, and sharply be worn so as to cause cutter, and the service life, which declines to a great extent even, to be occurred Moment failure is not available situation.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of roughing bulk ceramics milling cutter, in processing nickel base superalloy When cutting speed block, improve processing efficiency, and the service life of cutter is long.
A kind of roughing bulk ceramics milling cutter, technical solution are such comprising shank, neck and cutting edge portion, The front end of the shank connects the rear end of the neck, and the front end of the neck connects the rear end of the cutting edge portion, feature Be: the material of the milling cutter is Sialon ceramics, and the cutting edge portion includes cutting edge, chip pocket and chip space, wherein cutting Sword is made of Zhou Ren, end sword and the angle point of a knife R, and the angle the point of a knife R is used to connect the Zhou Ren and end sword of corresponding position, and the week sword is set There are rake face and circular arc flank, the end sword is equipped with rake face and straight flank, and the angle the point of a knife R is equipped with rake face and circular arc Flank, chip pocket are equipped with groove bottom and out knife face, front end face center-diameter of several end swords relative to the cutting edge portion To being uniformly arranged, each end sword respectively corresponds the angle the point of a knife R, a Zhou Ren, and the Zhou Ren is cut described The peripheral ring surface helix of blade is cut to being intervally arranged.
It is further characterized by: the material of the milling cutter is alpha-beta complex phase Sialon ceramics;
The quantity of the cutting edge of the cutting edge portion is 4~8;
The diameter of the cutting edge portion is 4~30mm, and the length of the cutting edge portion is 1~2 times of diameter, the cutting The core thickness of blade is 0.7~0.8 times of diameter;
The radius at the angle the point of a knife R is 0.5mm~2mm;
The anterior angle angle of each Zhou Ren is -10 °~-3 °, and the relief angles of each Zhou Ren are 6 °~15 °, institute The anterior angle angle for stating chip pocket is -5 °~0 °, and the end face inclination angle of the chip pocket is 12 °~22 °, and the chip pocket goes out nose angle It is -45 °~-30 °, the relief angles of the end sword are 6 °~15 °;
The helix angle of the Zhou Ren is 38 °~42 °;
The rake face at the angle the point of a knife R is provided with appearance bits fillet slot, can dramatically improve the intensity at the angle point of a knife R, So that it is not easy fragmentation in high-speed and high-temperature machining nickel base superalloy, improves cutter life.
After adopting the structure of the invention, when bulk ceramics milling cutter roughing nickel base superalloy, cutting speed can be up to 700~1000m/min, high cutting temperature make nickel base superalloy component surface material softening, and cutting becomes very Easily, while cutting force declines, and greatly improves the cutting ability of nickel base superalloy, and processing efficiency improves 10 times or more;And it is whole Body ceramics milling cutter can bear 1500 DEG C or more high temperature, under the conditions of high-speed cutting technique, cutter own material ingredient and mechanics Performance is hardly affected, so that cutter life also greatly improves while greatly improving processing efficiency;And pass through Optimize cutting edge roundness geometric parameter, if core is thick, rake angle and relief angle, chip pocket end face inclination angle, end clearance angle, so that matching is whole Ceramic material used by body milling cutter, bulk ceramics milling cutter intensity when increasing high-speed cutting, thus greatly improving processing efficiency While, cutter life is also further improved;
Detailed description of the invention
Fig. 1 is appearance schematic front view of the invention;
Fig. 2 is all sword partial schematic sectional views of the invention;
By the partial enlargement structural representation of end sword when Fig. 3 is isometric side view angle of the invention;
Fig. 4 is cutting edge end view of the invention.
Specific embodiment
Intensity and extreme hardness when nickel base superalloy room temperature, belong to typical difficult-to-machine material.In usual machining Under the conditions of, carbide-tipped milling cutter process velocity is extremely low, and usual cutting speed only has 30~60m/min, and processing efficiency is extremely low.This master If will cause that cutting temperature is higher due to improving cutting speed, the Binder Phase cobalt in hard alloy ingredient can be lost, to lead Cause cutter sharply wear, the service life decline to a great extent or even occur moment failure be not available situation.
However, if machining temperature is more than 800 DEG C, nickel-base high-temperature closes for nickel base superalloy roughing Thermal softening can occur for metal working part surfacing, and the intensity and hardness of material sharply decline at this time, so that machining becomes light Very much, processing efficiency dramatically improves, and cutter life can also greatly improve.
Roughing bulk ceramics milling cutter of the present invention, it is intended to by developing and being substituted using high temperature resistant Sialon ceramics current extensive The sintered carbide tool material used, then bulk ceramics milling cutter optimization cutting edge roundness geometric parameter is matched, as core is thick, rake angle With relief angle, chip pocket end face inclination angle, end clearance angle etc., increase the intensity of bulk ceramics milling cutter, so that with high cutting When speed processes nickel base superalloy, whole Sialon ceramics milling cutter performance and precision keep stablizing, and on the other hand high cutting heat Lead to workpiece surface material thermal softening, processing efficiency can be improved 10 times it is even higher, while the cutting tool service life also obtain into Improve to one step.
The attribute for the Sialon ceramics of exploitation and existing cemented carbide material compares as shown in table 1.It can be seen that Sai Longtao Porcelain fracture toughness is lower than hard alloy, but coefficient of friction only has the 1/4~1/5 of hard alloy, and ceramic milling cutter high speed can be improved Chip removal performance when cutting reduces tool wear, improves cutter life.In addition, in terms of thermal characteristics, the thermal conductivity of Sialon ceramics Extremely low, high cutting heat when high-speed cutting is difficult to be transmitted to Sialon ceramics cutter hub.And on the other hand, Sialon ceramics linear expansivity It is lower, it is ensured that in high-speed and high-temperature cutting, Sialon ceramics milling cutter has better precision stability.Particularly, Sai Longtao Porcelain can bear 1600 DEG C of high temperature of highest, far more than hard alloy material, thereby may be ensured that whole Sialon ceramics milling cutter in height Cutter stable material quality when fast high-temperature machining, corresponding intensity and hardness are substantially unaffected, the progress that cutter can be relatively stable High speed, high efficiency cuts nickel base superalloy.
In addition, compared with hard alloy material, since Sialon ceramics has lower chemical affinity, in High-speed machining nickel When based high-temperature alloy, Sialon ceramics milling cutter is more difficult that oxidation occurs and diffusive wear, cutter life are higher.
Table 1
Based on Sialon ceramic material, entirety Sialon ceramics roughing milling cutter technical solution set forth below.
Roughing bulk ceramics milling cutter of the present invention, it is contemplated that cutter different diameter specifications and processing technology, milling cutter cutting edge Sword number be set as 4~8.
As specific implementation case, by taking 6 blade milling cutters as an example, see FIG. 1 to FIG. 4: it includes shank 1, neck 2 and cutting edge portion 3, the rear end of the front end connecting neck portion 2 of shank 1, the front end of neck 2 connects the rear end of cutting edge portion 3, and the material of milling cutter is multiple for alpha-beta Phase Sialon ceramics, shank 1 are installed for cutter and knife handle, and neck 2 is kept away interference and used when being milling cutter machining, and usual neck 2 is straight Diameter is 0.2~0.3mm smaller than milling cutter sword diameter dc or so;Cutting edge portion 3 is milling cutter actual participation nickel base superalloy workpiece cutting portion Position, including cutting edge 4, chip pocket 5 and chip space 6, cutting edge 4 is by all swords 7, end sword 8 and connects all swords 7 and holds the point of a knife R of sword 8 Angle 9 forms, and the angle point of a knife R 9 is used to connect all swords 7 and end sword 8 of corresponding position, front end of six end swords 8 relative to cutting edge portion 3 Face is radially uniformly arranged, and each end sword 8 respectively corresponds all swords 7 in 9, one, angle point of a knife R, and Zhou Ren 7 is in cutting edge portion 3 Peripheral ring surface helix is to being intervally arranged.
Milling cutter sword diameter dc is 4~30mm, and blade length lc is 1~2 times of milling cutter sword diameter dc, and core thickness Dx is milling cutter sword diameter dc 0.7~0.8 times, so as to improve milling cutter intensity in high-speed and high-temperature machining nickel base superalloy, improve the cutter longevity Life;
Cutter helical angle is 38 °~42 °;9 radius of the angle point of a knife R is 0.5~2mm;
All swords 7 are equipped with rake face 10 and circular arc flank 11, and 7 anterior angle γ of Zhou Ren is -10 °~-3 °, and 7 relief angle α of Zhou Ren is 6 ° ~15 °;
Sword 8 is held to be equipped with rake face 12, the angle point of a knife R 9 is equipped with rake face 14, and rake face 14 is equipped with and holds bits fillet slot 18, this Sample can dramatically improve the intensity at the angle point of a knife R 9, be not easy it in high-speed and high-temperature machining nickel base superalloy Fragmentation improves cutter life;Chip pocket 5 is equipped with groove bottom 16.Correspondingly, 5 anterior angle of chip pocket is -5 °~0 °, 5 end face of chip pocket Inclination angle is 12 °~22 °;
Sword 8 is held to be equipped with straight flank 13, relief angle is 6 °~15 °.The angle point of a knife R 9 is equipped with circular arc flank 15, and chip pocket 5 is set There are knife face 17 out, nose angle is -45 °~-30 ° out.
As the specific implementation case of roughing bulk ceramics milling cutter of the present invention, it is respectively by comparing two cutter material Processing of the D12R1.5 round nose milling cutter of the Sialon ceramics of hard alloy in machining nickel base superalloy Inconel 718 Technique (as shown in table 2), it is found that whole Sialon ceramics milling cutter processing efficiency wants high more than hard alloy, it might even be possible to reach To as many as 12 times of its processing efficiency.On the other hand, the abrasion loss after whole Sialon ceramics milling cutter processing is lower, and cutter life reaches To 1.5 times of carbide-tipped milling cutter.Absolutely prove that roughing bulk ceramics Design Milling of the present invention is reasonable, it can be with high degree Ground improves processing efficiency of the difficult-to-machine material nickel base superalloy in roughing, while guaranteeing that cutter life is further mentioned It is high.
Table 2
Specific embodiments of the present invention are described in detail above, but content is only the preferable implementation of the invention Example, should not be considered as limiting the invention the practical range of creation.It is all to become according to equalization made by the invention application range Change and improve etc., it shall still fall within the scope of this patent.

Claims (8)

1. a kind of roughing bulk ceramics milling cutter comprising shank, neck and cutting edge portion, the shank front end connection described in The rear end of neck, the front end of the neck connect the rear end of the cutting edge portion, it is characterised in that: the material of the milling cutter is match Grand ceramics, the cutting edge portion include cutting edge, chip pocket and chip space, and wherein cutting edge is by Zhou Ren, end sword and the angle point of a knife R group At the angle the point of a knife R is used to connect the Zhou Ren of corresponding position and end sword, the Zhou Ren are equipped with rake face and circular arc flank, institute It states end sword and is equipped with rake face and straight flank, the angle the point of a knife R is equipped with rake face and circular arc flank, and chip pocket is equipped with groove bottom Knife face out, several end swords are radially uniformly arranged relative to the front end face of the cutting edge portion, each end sword Respectively correspond the angle the point of a knife R, a Zhou Ren, the Zhou Ren the cutting edge portion peripheral ring surface helix to Every arrangement.
2. a kind of roughing bulk ceramics milling cutter as described in claim 1, it is characterised in that: the material of the milling cutter is alpha-beta Complex phase Sialon ceramics.
3. a kind of roughing bulk ceramics milling cutter as claimed in claim 2, it is characterised in that: the cutting edge of the cutting edge portion Quantity be 4~8.
4. a kind of roughing bulk ceramics milling cutter as claimed in claim 3, it is characterised in that: the diameter of the cutting edge portion is 4~30mm, the length of the cutting edge portion are 1~2 times of diameter, and the core thickness of the cutting edge portion is the 0.7~0.8 of diameter Times.
5. a kind of roughing bulk ceramics milling cutter as described in claim 1, it is characterised in that: the radius at the angle the point of a knife R is 0.5mm~2mm.
6. a kind of roughing bulk ceramics milling cutter as described in claim 1, it is characterised in that: the anterior angle angle of each Zhou Ren Degree is -10 °~-3 °, and the relief angles of each Zhou Ren are 6 °~15 °, and the anterior angle angle of the chip pocket is -5 °~0 °, The end face inclination angle of the chip pocket is 12 °~22 °, and the nose angle that goes out of the chip pocket is -45 °~-30 °, the relief angle of the end sword Angle is 6 °~15 °.
7. a kind of roughing bulk ceramics milling cutter as described in claim 1, it is characterised in that: the helix angle of the Zhou Ren It is 38 °~42 °.
8. a kind of roughing bulk ceramics milling cutter as described in claim 1, it is characterised in that: the rake face at the angle the point of a knife R It is provided with appearance bits fillet slot.
CN201910162394.3A 2019-03-05 2019-03-05 A kind of roughing bulk ceramics milling cutter Pending CN109794634A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111906360A (en) * 2020-08-11 2020-11-10 西安交通大学深圳研究院 Nickel-based superalloy closed impeller rough machining method
CN112157303A (en) * 2020-10-23 2021-01-01 苏州阿诺精密切削技术有限公司 A ripples sword rough milling cutter for processing of cast iron vortex dish
CN112191956A (en) * 2020-09-02 2021-01-08 锑玛(苏州)精密工具股份有限公司 Thread milling cutter for high-temperature nickel-based alloy
CN112828368A (en) * 2021-01-04 2021-05-25 苏州阿诺精密切削技术有限公司 Taper milling cutter for worm machining
CN114147271A (en) * 2021-12-13 2022-03-08 山东大学 Ceramic milling cutter with multi-section arc edges

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CN209565540U (en) * 2019-03-05 2019-11-01 苏州阿诺精密切削技术有限公司 A kind of roughing bulk ceramics milling cutter

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JP2004141975A (en) * 2002-10-22 2004-05-20 Osg Corp Radius end mill
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JP2016159379A (en) * 2015-02-27 2016-09-05 三菱マテリアル株式会社 Radius end mill
CN205218161U (en) * 2015-11-27 2016-05-11 广州巴达精密刀具有限公司 Auto -parts parts machining's milling cutter
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CN106270702A (en) * 2016-10-25 2017-01-04 哈尔滨理工大学 A kind of monoblock type hard alloy profile milling cutter with curve sword
CN107363312A (en) * 2017-09-11 2017-11-21 大连理工大学 Band edge sword slotting cutter for carbon fibre composite high-speed milling
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111906360A (en) * 2020-08-11 2020-11-10 西安交通大学深圳研究院 Nickel-based superalloy closed impeller rough machining method
CN112191956A (en) * 2020-09-02 2021-01-08 锑玛(苏州)精密工具股份有限公司 Thread milling cutter for high-temperature nickel-based alloy
CN112157303A (en) * 2020-10-23 2021-01-01 苏州阿诺精密切削技术有限公司 A ripples sword rough milling cutter for processing of cast iron vortex dish
CN112828368A (en) * 2021-01-04 2021-05-25 苏州阿诺精密切削技术有限公司 Taper milling cutter for worm machining
CN114147271A (en) * 2021-12-13 2022-03-08 山东大学 Ceramic milling cutter with multi-section arc edges

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Application publication date: 20190524