CN102407364A - Ant-vibration drill bit - Google Patents
Ant-vibration drill bit Download PDFInfo
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- CN102407364A CN102407364A CN2011104162020A CN201110416202A CN102407364A CN 102407364 A CN102407364 A CN 102407364A CN 2011104162020 A CN2011104162020 A CN 2011104162020A CN 201110416202 A CN201110416202 A CN 201110416202A CN 102407364 A CN102407364 A CN 102407364A
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- cutting blade
- cutting
- antivibration
- drill body
- drill
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Abstract
The invention discloses an ant-vibration drill bit which comprises a bit stock, a stepped-shaft-shaped drill body, a group of front cutting blade parts and a group of rear cutting blade parts, wherein the front cutting blade parts are arranged at the top end of the drill body, the rear cutting blade parts are arranged at a stepped part of the drill body, and deflection angles theta are formed between the front cutting blade parts and the rear cutting blade parts; and the group of rear cutting blade parts comprise first rear cutting blade parts and second rear cutting blade parts which are adjacent to each other, included angles alpha 1 between the first rear cutting blade parts and the second rear cutting blade parts are equal to 360 DEG/n-beta, wherein n refers to the number of the rear cutting blade parts, and beta refers to an ant-vibration declination angle (theta2-theta1). In the ant-vibration drill bit disclosed by the invention, the rear cutting blade parts are not uniformly distributed on the circumference of the drill body, so that the vibration caused when the natural frequency of a cutting force is same as the frequency of a machine tool can be eliminated; and the ant-vibration drill bit is high in vibration resistance and good in rigidity.
Description
Technical field
The invention discloses a kind of drill bit, be specifically related to a kind of step drill, particularly a kind of automotive hub PCD hole drill.
Background technology
The Hyundai Motor wheel hub has carried out wheel hub large-scale production of aluminium matter and use, in aluminium matter wheel hub process, needs to use a kind of target drill to carry out the wheel hub connection and processes with bolt hole.Process the increasing substantially along with the automobile production capacity of being changed a social system the Specialty Design manufacturing by simple and easy unit-type drill head experienced in the development of this type of dedicated tool; The wheel hub manufacturing industry has also proposed requirements at the higher level to production efficiency of products and quality; Traditional wheel hub drill bit design and manufacturing process can not satisfy present instructions for use, and it is low mainly to show as working (machining) efficiency, and work piece quality and surface roughness are poor; Cutter life is low, and production line is long and poor stability of bit change post debugging time more.
Step drill can make has diameter different successive section in the boring of same operation; Say so more accurately through in boring the body tip, not only comprising one group of cutting edge; And in one or more alleged ladders, said ladder is formed on a distance at most advanced and sophisticated rear, and has the diameter bigger than the tip; Comprise the attached cutting sword, said attached cutting sword can produce the additional holes section of the diameter with continuous increase.
Add man-hour holing,, can cause vibration, during processing shoulder hole,, then require the rigidity of step drill high, good anti-vibration if the small aperture of shoulder hole and macropore diameter differ bigger if the frequency of the intrinsic frequency of cutting force and lathe is identical.Existing step drill does not reach above-mentioned requirements, is prone to take place the phenomenon that the step drill drill bit fractures.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of antivibration drill bit, can eliminate the vibration that adds man-hour.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of antivibration drill bit is provided; Comprise: drillstock, cut blade after being before the drill body, a group of multidiameter shape cutting blade and one group; Cutting edge portion is positioned at the drill body top before said, and cutting edge portion in said back is positioned at drill body ladder place, said before the cutting blade form deflection angle theta with back cutting blade; The cutting blade comprises the first adjacent back cutting blade and the second back cutting blade after said one group, the angle between the said first back cutting blade and the second back cutting blade
1=360 °/n-β, wherein n is the quantity of back cutting blade, β is the antivibration drift angle.
In preferred embodiment of the present invention, said antivibration drift angle β scope is 1 °≤β≤15 °.
In preferred embodiment of the present invention, the scope of said deflection angle theta is 10 °≤θ≤35 °.
In preferred embodiment of the present invention; Last cutting slot and two groups of cutting slots of following cutting slot are arranged on the said drill body; Said upward cutting slot cuts blade in the past to begin to extend along drill body toward the drillstock direction; The cutting blade begins to extend along drill body toward the drillstock direction said cutting slot down from the back, and afterbody and last cutting slot converge.
In preferred embodiment of the present invention; Said step drill also comprises the cooling duct, and said cooling duct comprises cooling main channel and cooling subchannel, and said cooling main channel is positioned at the step drill main shaft; Said cooling subchannel is told by the main channel; Subchannel and back subchannel two component passages before comprising, the other drill body part of cutting blade before the coolant outlet of preceding subchannel is positioned at, the coolant outlet of back subchannel is positioned at the drill body part on the back cutting blade.
The invention has the beneficial effects as follows: antivibration drill bit of the present invention, back cutting blade is not even distribution on the drill body circumference, can eliminate the identical vibration that causes with the lathe intrinsic frequency of frequency because of the cutting vibrations, vibration resistance is high, good rigidly.
Description of drawings
Fig. 1 is the perspective view of antivibration drill bit one preferred embodiment of the present invention;
Fig. 2 is that sketch map is looked on the left side of antivibration drill bit shown in Figure 1;
Fig. 3 is the cross-sectional schematic of antivibration drill bit shown in Figure 1;
The mark of each parts is following in the accompanying drawing: 1 for drillstock, 2 for drill body, 31 be before first cutting blade, 32 be before first cutting blade, 41 be the first back cutting blade, 42 be the second back cutting blade, 51 for last cutting slot, 52 for cutting slot down, 6 for the cooling main channel, 61 for the coolant outlet of preceding subchannel, 62 for after the coolant outlets of subchannel.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1, Fig. 2 and Fig. 3, the embodiment of the invention comprises:
A kind of antivibration drill bit comprises: drillstock 1, drill body 2, cut blade behind cutting blade and one group before one group;
Drill body 2 is the multidiameter shape, comprises big footpath section and path section, and the path section is positioned at the front end of drill body 2, and big footpath section is positioned at the rear end of drill body 2, and drillstock 1 is connected with big footpath, rear end section.
Before cutting edge portion be positioned at the drill body top, back cutting edge portion is positioned at drill body ladder place.Cut blade before comprising two in the present embodiment---cutting blade 32 before the first preceding cutting blade 31 and second; Cutting blade after two---the cutting blade 31 and the first back cutting blade 41 form deflection angle theta before the first back cutting blade 41 and the second back cutting blade 42, the first
1, the second preceding cutting blade 32 and the second back cutting blade 42 form deflection angle theta
2, deflection angle theta
1And θ
2Scope be 10 ° ~ 35 °, deflection angle theta in the present embodiment
1And deflection angle theta
2Angle unequal.
Angle between the first back cutting blade and the second cutting blade
1=360 °/n-β, wherein n is the quantity of back cutting blade, and β is the antivibration drift angle, and antivibration drift angle β scope is 1 ° ~ 10 °.Angle in the present embodiment between the first back cutting blade and the second cutting blade
1=175 °, antivibration drift angle β in the present embodiment=θ 2-θ 1.
For ease of chip removal; 52 liang of groups of last cutting slot 51 and following cutting slot cutting slot is arranged on the drill body 2; Said upward cutting slot 51 cuts blade in the past to begin to extend along drill body 2 toward drillstock 1 directions; The cutting blade begins to extend along drill body 2 toward drillstock 1 direction said cutting slot 52 down from the back, and afterbody and last cutting slot 51 converge.Front and back cutting blade adopts and reverses the structure that staggers; Can form two cutting slots up and down; Last cutting slot 51 is main to be responsible for that preceding cutting blade is cut the cutting swarf that gets off and to discharge, and following cutting slot 52 is main to be responsible for will back cutting blade cutting the cutting swarf that gets off and to discharge, and effectively prevents the accumulation of cutting swarf.
Cooling during for ease of cutting; Step drill also comprises the cooling duct, and said cooling duct comprises cooling main channel 6 and cooling subchannel, and said cooling main channel is positioned at the step drill main shaft; Said cooling subchannel is told by the main channel; Subchannel and back subchannel two component passages before comprising, the other drill body part of cutting blade before the coolant outlet 61 of preceding subchannel is positioned at, the coolant outlet 62 of back subchannel is positioned at the drill body part on the back cutting blade.Cooling fluid pushes away the effect of bits layering in addition simultaneously, makes chip removal smooth more.
Antivibration drill bit of the present invention, back cutting blade is not even distribution on the drill body circumference, can eliminate the identical vibration that causes with the lathe frequency of intrinsic frequency because of cutting force, vibration resistance is high, good rigidly.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (5)
1. antivibration drill bit; Comprise: drillstock, cut blade after being before the drill body, a group of multidiameter shape cutting blade and one group, said before cutting edge portion be positioned at the drill body top, said back cutting edge portion is positioned at drill body ladder place; The cutting blade forms deflection angle theta with back cutting blade before said; It is characterized in that the cutting blade comprises the first adjacent back cutting blade and the second back cutting blade after said one group, the angle between the said first back cutting blade and the second back cutting blade
1=360 °/n-β, wherein n is the quantity of back cutting blade, β is the antivibration drift angle.
2. antivibration drill bit according to claim 1 is characterized in that, said antivibration drift angle β scope is 1 °≤β≤15 °.
3. antivibration drill bit according to claim 1 is characterized in that, the scope of said deflection angle theta is 10 °≤θ≤35 °.
4. antivibration drill bit according to claim 1; It is characterized in that; Last cutting slot and two groups of cutting slots of following cutting slot are arranged on the said drill body; Said upward cutting slot cuts blade in the past to begin to extend along drill body toward the drillstock direction, and said cutting slot down cuts blade to begin to extend along drill body toward the drillstock direction from the back, and afterbody and last cutting slot converge.
5. antivibration drill bit according to claim 1 is characterized in that, said antivibration drill bit also comprises the cooling duct; Said cooling duct comprises cooling main channel and cooling subchannel; Said cooling main channel is positioned at the step drill main shaft, and said cooling subchannel is told by the main channel, subchannel and back subchannel two component passages before comprising; The other drill body part of cutting blade before the coolant outlet of preceding subchannel is positioned at, the coolant outlet of back subchannel is positioned at the back and cuts the drill body part on the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104162020A CN102407364A (en) | 2011-12-14 | 2011-12-14 | Ant-vibration drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104162020A CN102407364A (en) | 2011-12-14 | 2011-12-14 | Ant-vibration drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102407364A true CN102407364A (en) | 2012-04-11 |
Family
ID=45909878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104162020A Pending CN102407364A (en) | 2011-12-14 | 2011-12-14 | Ant-vibration drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102407364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449624A (en) * | 2019-07-18 | 2019-11-15 | 浙江固德轴承制造有限公司 | Line rail puncher |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120008A (en) * | 1986-11-05 | 1988-05-24 | Mitsubishi Metal Corp | Drill |
| CN201168811Y (en) * | 2008-03-19 | 2008-12-24 | 西安理工大学 | Staggered deep hole processing tool bit |
| CN101534985A (en) * | 2006-08-07 | 2009-09-16 | Hanita金属制品有限公司 | A chatter-resistant end mill and a method of making such an end mill |
| CN201543873U (en) * | 2009-09-09 | 2010-08-11 | 孙生强 | Compound drill bit |
| CN201609781U (en) * | 2010-01-03 | 2010-10-20 | 阿诺（苏州）刀具有限公司 | Drilling-reaming type powerful drill |
| CN101920354A (en) * | 2010-09-16 | 2010-12-22 | 株洲钻石切削刀具股份有限公司 | Asymmetric dynamic balance vertical milling cutter |
| CN102009216A (en) * | 2010-12-14 | 2011-04-13 | 株洲钻石切削刀具股份有限公司 | End milling cutter for processing nonferrous metal |
| CN102145399A (en) * | 2011-03-30 | 2011-08-10 | 常熟市磊王合金工具有限公司 | Step drill |
| CN202428004U (en) * | 2012-05-23 | 2012-09-12 | 常熟市磊王合金工具有限公司 | Shock-resistance drill bit |
-
2011
- 2011-12-14 CN CN2011104162020A patent/CN102407364A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120008A (en) * | 1986-11-05 | 1988-05-24 | Mitsubishi Metal Corp | Drill |
| CN101534985A (en) * | 2006-08-07 | 2009-09-16 | Hanita金属制品有限公司 | A chatter-resistant end mill and a method of making such an end mill |
| CN201168811Y (en) * | 2008-03-19 | 2008-12-24 | 西安理工大学 | Staggered deep hole processing tool bit |
| CN201543873U (en) * | 2009-09-09 | 2010-08-11 | 孙生强 | Compound drill bit |
| CN201609781U (en) * | 2010-01-03 | 2010-10-20 | 阿诺（苏州）刀具有限公司 | Drilling-reaming type powerful drill |
| CN101920354A (en) * | 2010-09-16 | 2010-12-22 | 株洲钻石切削刀具股份有限公司 | Asymmetric dynamic balance vertical milling cutter |
| CN102009216A (en) * | 2010-12-14 | 2011-04-13 | 株洲钻石切削刀具股份有限公司 | End milling cutter for processing nonferrous metal |
| CN102145399A (en) * | 2011-03-30 | 2011-08-10 | 常熟市磊王合金工具有限公司 | Step drill |
| CN202428004U (en) * | 2012-05-23 | 2012-09-12 | 常熟市磊王合金工具有限公司 | Shock-resistance drill bit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449624A (en) * | 2019-07-18 | 2019-11-15 | 浙江固德轴承制造有限公司 | Line rail puncher |
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Application publication date: 20120411 |