CN101992385A - Wear-free drill cutting blade and manufacture method thereof - Google Patents
Wear-free drill cutting blade and manufacture method thereof Download PDFInfo
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- CN101992385A CN101992385A CN 201010519696 CN201010519696A CN101992385A CN 101992385 A CN101992385 A CN 101992385A CN 201010519696 CN201010519696 CN 201010519696 CN 201010519696 A CN201010519696 A CN 201010519696A CN 101992385 A CN101992385 A CN 101992385A
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Abstract
The invention discloses a manufacture method of a wear-free drill cutting blade, which comprises the following steps of: 1, manufacturing a helical blank body; 2, finishing the blank body, wherein the width of the finished blank body is slightly less than that of a cutting blade installing grove, the finished back is matched with the inner wall of a drill body installing groove in shape, and a helical angel of the finished front blade surface is equal to the helical angle of the drill body installing groove; 3, cutting the blank body into a plurality of cutting blades; 4, machining a cutting edge at the top of the cutting blade; and 5, arranging screw holes on two wall surfaces of the cutting blade, and arranging a positioning groove at the bottom of the cutting blade, wherein when the cutting blade is arranged on a drill body, and the torque acting forces of a wear-free drill during the work, which are applied on the cutting blade and the drill body, are same, thus the deformation and the damage of inner wall of the drill body installing groove are prevented, and the service life of the drill body and the cutting blade is prolonged.
Description
Technical field
The present invention relates to drill bit, particularly a kind of preparation method and of the cutting tip that is used for exempting from the abrasive drilling head is according to the prepared cutting tip of described method.
Background technology
In the prior art, conventional drill bit comprises the cylindrical cutter body that has at least one spiral flute and land as fluted drill, and wherein flute and land follow helical angle to the preceding edge of a knife.Fluted drill the rear end can in the chuck of for example hand-operated tools or drilling machine, fix.The edge of a knife of drill bit is a conical shaped, has cutting edge, and a pair of thus radially relative cutting edge is defined by the guide face of trough of belt land and the side that forms the drill bit of trough of belt land end face.The periphery of each trough of belt land all has radial projection portion in its forward position, and radial projection portion is called land, cylindrical land differently and supports the limit.Support the length of edge trough of belt land to extend for these two.
This drill bit commonly used, because boring body and drill bit is that integrally casting forms, after drill bit is worn, just need polishing again, the comparison difficulty because drill bit is refaced, and Geju City drill bit of polishing is more taller than the price of buying a green bit, so the user often directly throws away old drill bit later at bit wear, has caused the waste of material and money.
Multi-stylus cutting drill of the prior art also claims by " Ni Zhifu drill ", and this drill bit possesses at a high speed, lightly good, the production efficiency of laborsaving, chip removal convenience, long service life, crudy can improve multiple advantage such as to three times, is described as unique in the world drill bit.Brainstrust is referred to as " significant innovation in the mechanical industry metal cutting industry ".In the four continent seminars that 1964 hold in Beijing, " Ni's brill " won the praise of 44 the countries and regions scientists of attending the meeting, and obtains the United Nations's World Intellectual Property Organization's gold medal and certificate in 1986.But this drill bit is because there is the sharpening difficulty equally in brill type complexity, and therefore the difficult problem of refacing can not be promoted the use of always.Though now solved a sharpening difficult problem, the difficult problem of refacing still exists, so this outstanding drill bit also fails to introduce to the market always, simultaneously, because it is often harder to produce the material of drill bit, difficulty of processing is also very big.Therefore how processability is good, structure firm, head-changeable exempt from the abrasive drilling head, solve the sharpening difficulty by the form that can change cutting tip, the difficult problem of refacing just becomes the research direction that the drill produced industry is endeavoured.
What occurred at present a little replaceable cutting inserts on the market exempts from the abrasive drilling head, and it separates manufacturing with cutting tip, assembles the mode of use afterwards by boring body, has overcome some weakness of conventional drill.But, because it is generally rectangle in the set cutting tip mounting groove cross section of brill on one's body, its wall is the plane, the cross section of cutting tip also is that rectangle, its wall suitable with the cutting tip mounting groove also is the plane, its when assembling exist the location inaccurate, connect untight problem, and when work moment of torsion active force then big more, then more little the closer to boring the body circumferential section the closer to the part in the center of circle, make cutting tip mounting groove wall deform easily, damage, the life-span of boring body falls short of.
Summary of the invention
The objective of the invention is to, a kind of preparation method who exempts from an abrasive drilling cutting tip is provided, can prepare the cutting tip that a kind of wall is a spiral camber by this method, this cutting tip can closely cooperate with the brill body of exempting from the abrasive drilling head, accurate positioning, because boring the cutting tip mounting groove inwall of body front end is spiral camber, when this cutting tip is installed to when boring on one's body, the active force of moment of torsion is all the same on one's body big with brill at cutting tip when exempting from the work of abrasive drilling head, there be not common the big more of abrasive drilling of exempting from the closer to boring body circumferential section active force, the closer to the more little phenomenon of center of circle partial action power, effectively preventing to bore body mounting groove inwall deforms, damage, prolonged the service life of boring body and cutting tip.
The present invention also aims to provide a kind of according to the prepared cutting tip of aforementioned preparation method.
The technical scheme that the present invention is adopted for achieving the above object is:
A kind of preparation method who exempts from an abrasive drilling cutting tip, it may further comprise the steps:
1) according to the shape of the width of the cutting tip mounting groove of the brill body front end of need couplings, this mounting groove inwall with should bore the spiral angle of the helical groove of body, prepare spiral helicine idiosome by raw material metal being rolled, turned round system or extrusion process, two walls of described idiosome are the axis symmetry of this idiosome relatively, respectively is provided with a rake face and a back on two walls of described idiosome;
2) described idiosome is carried out fine finishining, mode fine finishining back by helix cutting or spiral mill, mode fine finishining rake face by the spiral mill, make the precision of rake face and back reach designing requirement, the thickness of the idiosome after the fine finishining is slightly less than the width of described cutting tip mounting groove, back shape after the fine finishining and described mounting groove inner wall shape are suitable, and the spiral angle of the rake face after the fine finishining is identical with the spiral angle of described brill body helical groove;
3) described idiosome is cut according to the cutting tip monomer length of setting, be divided into a plurality of cutting tips, this cutting tip is installed to when boring on one's body, and the rake face on these cutting tip two walls and this bore on one's body that the bottom surface of helical groove is on the same helicoid;
4) process the cutting blade at the top of described cutting tip;
5) on two walls of described cutting tip, screw is set, locating slot is set in the bottom of described cutting tip.
As a further improvement on the present invention, described step 2) in, it is further comprising the steps of:
21) according to the cutting tip thickness of setting, with spiral mill mode the rake face on one wall of this idiosome is processed, idiosome is axially at the uniform velocity pushed ahead and the while forward at the uniform velocity rotates, this idiosome forward impelling is identical with the spiral angle of the helical groove of described brill body with the formed spiral angle of rotation, this idiosome advances always, when the idiosome length of being processed reaches preseting length, stop the action of this idiosome forward impelling, the rake face on the wall is identical with the spiral angle of the helical groove of described brill body at this moment;
22) to another wall repeating step 21 of this idiosome) action, the rake face on another wall of this idiosome to be processed, the rake face that machines on the rear surface is identical with the spiral angle of the helical groove of described brill body.
As a further improvement on the present invention, described step 2) in, it is further comprising the steps of:
23) according to the cutting tip thickness of setting, method with helix cutting or spiral mill is carried out spiral processing to the back on the wall of this idiosome, idiosome is axially at the uniform velocity pushed ahead and the while forward at the uniform velocity rotates, this idiosome advances always, when the idiosome length of being processed reaches preseting length, stop the action of this idiosome forward impelling, the inwall of formed back and described mounting groove is suitable on the wall at this moment;
24) to another wall repeating step 23 of this idiosome) action, the back on another wall of this idiosome to be processed, the inwall that machines back on the rear surface and described mounting groove is suitable.
A kind of according to the aforementioned prepared cutting tip of preparation method of exempting from an abrasive drilling cutting tip, it comprises a spiral helicine blade body, two walls of described blade body are the axis symmetry of this blade body relatively, a described wall is provided with a rake face and a back, the spiral angle of described rake face is identical with the spiral angle of the helical groove of described brill body, and the inwall of described back and described brill mounting groove on one's body is suitable.
As a further improvement on the present invention, described blade body is provided with two and is convenient to this cutting tip is fixed to described brill screw on one's body, and described two screws run through two walls of this blade body and the axis symmetry of relative blade body.
As a further improvement on the present invention, the bottom of described blade body is provided with one and is convenient to this cutting tip and is fixed to described brill locating slot on one's body.
Beneficial effect of the present invention is: the inventive method is reasonable in design, can prepare the cutting tip that a kind of wall is a spiral camber by this method, this cutting tip can closely cooperate with the brill body of exempting from the abrasive drilling head, accurate positioning, because boring the cutting tip mounting groove inwall of body front end is spiral camber, when this cutting tip is installed to when boring on one's body, the active force of moment of torsion is all the same on one's body big with brill at cutting tip when exempting from the work of abrasive drilling head, there be not common the big more of abrasive drilling of exempting from the closer to boring body circumferential section active force, the closer to the more little phenomenon of center of circle partial action power, effectively preventing to bore body mounting groove inwall deforms, damage, prolonged the service life of boring body and cutting tip.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
Description of drawings
Fig. 1 is a structure enlarged diagram of the present invention;
Fig. 2 is cutting tip of the present invention and the brill body assembling schematic diagram of exempting from the abrasive drilling head;
Fig. 3 be Fig. 2 assemble finish after structural representation;
Fig. 4 is the structural representation of idiosome among the present invention.
The specific embodiment
Embodiment: see Fig. 1 to Fig. 4, a kind of preparation method who exempts from an abrasive drilling cutting tip of the present invention, it may further comprise the steps:
1) according to the shape of the width of the cutting tip mounting groove 21 of brill body 2 front ends of need couplings, these mounting groove 21 inwalls with should bore the spiral angle of the helical groove 22 of body 2, prepare spiral helicine idiosome by raw material metal being rolled, turned round system or extrusion process, two walls of described idiosome are the axis symmetry of this idiosome relatively, respectively is provided with a rake face 12 and a back 11 on two walls of described idiosome;
2) described idiosome is carried out fine finishining, mode fine finishining back 11 by helix cutting or spiral mill, mode fine finishining rake face 12 by the spiral mill, make the rake face 12 and the precision of back 11 reach designing requirement, the thickness of the idiosome after the fine finishining is slightly less than the width of described cutting tip mounting groove 21, back 11 shapes and described mounting groove 21 inner wall shape after the fine finishining are suitable, and the spiral angle of the rake face 12 after the fine finishining is identical with the spiral angle of described brill body 2 helical grooves 22;
3) described idiosome is cut according to the cutting tip monomer length of setting, be divided into a plurality of cutting tips, when being installed to this cutting tip on the brill body 2, the bottom surface of helical groove 22 is on the same helicoid on the rake face 12 on these cutting tip two walls and this brill body 2;
4) process cutting blade 13 at the top of described cutting tip;
5) on two walls of described cutting tip, screw 14 is set, locating slot 15 is set in the bottom of described cutting tip.
Described step 2) in, it is further comprising the steps of:
21) according to the cutting tip thickness of setting, with spiral mill mode the rake face on one wall of this idiosome is processed, idiosome is axially at the uniform velocity pushed ahead and the while forward at the uniform velocity rotates, this idiosome forward impelling is identical with the spiral angle of the helical groove 22 of described brill body 2 with the formed spiral angle of rotation, this idiosome advances always, when the idiosome length of being processed reaches preseting length, stop the action of this idiosome forward impelling, the rake face 12 on the wall is identical with the spiral angle of the helical groove 22 of described brill body 2 at this moment;
22) to another wall repeating step 21 of this idiosome) action, the rake face 12 on another wall of this idiosome to be processed, the rake face 12 that machines on the rear surface is identical with the spiral angle of the helical groove 22 of described brill body 2.
Described step 2) in, it is further comprising the steps of:
23) according to the cutting tip thickness of setting, method with helix cutting or spiral mill is carried out spiral processing to the back on the wall of this idiosome 11, idiosome is axially at the uniform velocity pushed ahead and the while forward at the uniform velocity rotates, this idiosome advances always, when the idiosome length of being processed reaches preseting length, stop the action of this idiosome forward impelling, formed back 11 is suitable with the inwall of described mounting groove 21 on the wall at this moment;
24) to another wall repeating step 23 of this idiosome) action, the back 11 on another wall of this idiosome to be processed, the back 11 that machines on the rear surface is suitable with the inwall of described mounting groove 21.
A kind of according to the aforementioned prepared cutting tip of preparation method of exempting from an abrasive drilling cutting tip, it comprises a spiral helicine blade body 1, two walls of described blade body 1 are the axis symmetry of this blade body 1 relatively, a described wall is provided with a rake face 12 and a back 11, the spiral angle of described rake face 12 is identical with the spiral angle of the helical groove 22 of described brill body 2, and the inwall of the mounting groove 21 on described back 11 and the described brill body 2 is suitable.
Described blade body 1 is provided with two and is convenient to this cutting tip is fixed to screw 14 on the described brill body 2, and described two screws 14 run through two walls of this blade body 1 and the axis symmetry of blade body 1 relatively.
The bottom of described blade body 1 is provided with one and is convenient to this cutting tip and is fixed to locating slot 15 on the described brill body 2.
Use when of the present invention, this cutting tip is used for a kind of solution sharpening difficulty, the difficult abrasive drilling head of exempting from of refacing, brill body 2 front ends that are complementary with this cutting tip are provided with cutting tip mounting groove 21, the inwall of this mounting groove 21 is a spiral camber, the corresponding mounting groove 21 of this cutting tip is snapped onto in this mounting groove 21, because back 11 shapes and described mounting groove 21 inner wall shape of cutting tip are suitable, back 11 is close to the inwall of mounting groove 21, the bottom of mounting groove 21 is provided with a projection 25, this projection 25 is stuck in the cutting tip locating slot at bottom 15, two screws 14 on the cutting tip are corresponding with two screws 24 on the brill body 2 respectively at this moment, this cutting tip can be fixed on by two-screw 3 and bore on the body 2.Because cutting tip is to cooperate by spiral camber with the inwall of mounting groove 21, and it cooperates closely, accurate positioning, when exempting from the work of abrasive drilling head, the active force of the moment of torsion that rake face 12 cutting workpieces are produced cutting tip with bore body 2 on all the same big, do not exist common exempt from abrasive drilling the closer to bore body 2 circumferential section active forces big more, the closer to the more little phenomenon of center of circle partial action power, effectively prevent to bore body 2 mounting grooves 21 inwalls and deform, damage, prolonged the service life of boring body and cutting tip
As described in the embodiment of the invention, exempt from the preparation method and the cutting tip of an abrasive drilling cutting tip with other of the same or similar structure of the present invention, all in protection domain of the present invention.
Claims (6)
1. preparation method who exempts from an abrasive drilling cutting tip is characterized in that it may further comprise the steps:
1) according to the shape of the width of the cutting tip mounting groove of the brill body front end of need couplings, this mounting groove inwall with should bore the spiral angle of the helical groove of body, prepare spiral helicine idiosome by raw material metal being rolled, turned round system or extrusion process, two walls of described idiosome are the axis symmetry of this idiosome relatively, respectively is provided with a rake face and a back on two walls of described idiosome;
2) described idiosome is carried out fine finishining, mode fine finishining back by helix cutting or spiral mill, mode fine finishining rake face by the spiral mill, make the precision of rake face and back reach designing requirement, the thickness of the idiosome after the fine finishining is slightly less than the width of described cutting tip mounting groove, back shape after the fine finishining and described mounting groove inner wall shape are suitable, and the spiral angle of the rake face after the fine finishining is identical with the spiral angle of described brill body helical groove;
3) described idiosome is cut according to the cutting tip monomer length of setting, be divided into a plurality of cutting tips, this cutting tip is installed to when boring on one's body, and the rake face on these cutting tip two walls and this bore on one's body that the bottom surface of helical groove is on the same helicoid;
4) process the cutting blade at the top of described cutting tip;
5) on two walls of described cutting tip, screw is set, locating slot is set in the bottom of described cutting tip.
2. according to the described preparation method who exempts from an abrasive drilling cutting tip of claim 1, it is characterized in that described step 2) in, it is further comprising the steps of:
21) according to the cutting tip thickness of setting, with spiral mill mode the rake face on one wall of this idiosome is processed, idiosome is axially at the uniform velocity pushed ahead and the while forward at the uniform velocity rotates, this idiosome forward impelling is identical with the spiral angle of the helical groove of described brill body with the formed spiral angle of rotation, this idiosome advances always, when the idiosome length of being processed reaches preseting length, stop the action of this idiosome forward impelling, the rake face on the wall is identical with the spiral angle of the helical groove of described brill body at this moment;
22) to another wall repeating step 21 of this idiosome) action, the rake face on another wall of this idiosome to be processed, the rake face that machines on the rear surface is identical with the spiral angle of the helical groove of described brill body.
3. according to the described preparation method who exempts from an abrasive drilling cutting tip of claim 2, it is characterized in that described step 2) in, it is further comprising the steps of:
23) according to the cutting tip thickness of setting, method with helix cutting or spiral mill is carried out spiral processing to the back on the wall of this idiosome, idiosome is axially at the uniform velocity pushed ahead and the while forward at the uniform velocity rotates, this idiosome advances always, when the idiosome length of being processed reaches preseting length, stop the action of this idiosome forward impelling, the inwall of formed back and described mounting groove is suitable on the wall at this moment;
24) to another wall repeating step 23 of this idiosome) action, the back on another wall of this idiosome to be processed, the inwall that machines back on the rear surface and described mounting groove is suitable.
4. one kind according to the described prepared cutting tip of preparation method of exempting from an abrasive drilling cutting tip of claim 1, it is characterized in that: it comprises a spiral helicine blade body, two walls of described blade body are the axis symmetry of this blade body relatively, a described wall is provided with a rake face and a back, the spiral angle of described rake face is identical with the spiral angle of the helical groove of described brill body, and the inwall of described back and described brill mounting groove on one's body is suitable.
5. cutting tip according to claim 4, it is characterized in that, described blade body is provided with two and is convenient to this cutting tip is fixed to described brill screw on one's body, and described two screws run through two walls of this blade body and the axis symmetry of relative blade body.
6. cutting tip according to claim 5 is characterized in that, the bottom of described blade body is provided with one and is convenient to this cutting tip and is fixed to described brill locating slot on one's body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010519696 CN101992385A (en) | 2010-10-26 | 2010-10-26 | Wear-free drill cutting blade and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010519696 CN101992385A (en) | 2010-10-26 | 2010-10-26 | Wear-free drill cutting blade and manufacture method thereof |
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| CN101992385A true CN101992385A (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010519696 Pending CN101992385A (en) | 2010-10-26 | 2010-10-26 | Wear-free drill cutting blade and manufacture method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896479A (en) * | 2012-09-17 | 2013-01-30 | 苏茂均 | Method for manufacturing drill bit with cutting tool bit replaceable and product thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6485235B1 (en) * | 2001-05-08 | 2002-11-26 | Allied Machine & Engineering Corp. | Cutting tool assembly with replaceable cutting head |
| CN1630569A (en) * | 2002-02-21 | 2005-06-22 | 肯纳梅泰尔公司 | Rotary cutting tool, such as a drill, comprising an exchangeable cutting insert, and an exchangeable cutting insert |
| CN201249283Y (en) * | 2008-07-01 | 2009-06-03 | 东莞市微创工具科技有限公司 | Novel twist drill |
| CN101502927A (en) * | 2008-12-31 | 2009-08-12 | 东莞市微创工具科技有限公司 | Method for preparing grinding-free drill head and drill head |
-
2010
- 2010-10-26 CN CN 201010519696 patent/CN101992385A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6485235B1 (en) * | 2001-05-08 | 2002-11-26 | Allied Machine & Engineering Corp. | Cutting tool assembly with replaceable cutting head |
| CN1630569A (en) * | 2002-02-21 | 2005-06-22 | 肯纳梅泰尔公司 | Rotary cutting tool, such as a drill, comprising an exchangeable cutting insert, and an exchangeable cutting insert |
| CN201249283Y (en) * | 2008-07-01 | 2009-06-03 | 东莞市微创工具科技有限公司 | Novel twist drill |
| CN101502927A (en) * | 2008-12-31 | 2009-08-12 | 东莞市微创工具科技有限公司 | Method for preparing grinding-free drill head and drill head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896479A (en) * | 2012-09-17 | 2013-01-30 | 苏茂均 | Method for manufacturing drill bit with cutting tool bit replaceable and product thereof |
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