CN203401119U - High-strength highly-durable drill - Google Patents
High-strength highly-durable drill Download PDFInfo
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- CN203401119U CN203401119U CN201320464701.1U CN201320464701U CN203401119U CN 203401119 U CN203401119 U CN 203401119U CN 201320464701 U CN201320464701 U CN 201320464701U CN 203401119 U CN203401119 U CN 203401119U
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- chisel edge
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Abstract
The utility model relates to a high-strength highly-durable drill which comprises a narrow and long component provided with a lengthwise axis, a handle portion and a cutting end, wherein the handle portion and the cutting end can be installed on a rotation machine. The cutting end at least comprises a first cutting blade and a second cutting blade, wherein the first cutting blade and the second cutting blade are symmetrically arranged on two opposite sides of the axis. The cutting blades comprise linear chisel edge portions of which one ends are connected with the axis and arc cutting connection portions used for being smoothly jointed with main cutting portions and the chisel edge portions. According to the high-strength highly-durable drill, at least two linear chisel edge portions and two arc connection portion blades are formed, thus, centring of the drill is obviously reinforced, the chip breaking capacity of the drill is obviously reinforced, the cutting resistance is reduced, the chisel edge portions are protected and durability is obviously improved.
Description
Technical field
The utility model relates to a kind of cutter for hole processing, relates in particular to a kind of drill bit, is applicable to various materials to carry out hole processing, has durability.
Background technology
Drill bit is that a class goes out through hole or blind hole in order to drilling on solid material, and can carry out to existing hole the general name of the cutter of reaming.Its conventional kind is as fluted drill, chit drill, depth drill, reamer and centre drill etc.
Conventional common spiral bit, does not adopt chisel edge grinding conventionally at present.Drill bit is in working angles, and when especially high hardness material is cut, because the chisel edge part without reconditioning is long, to such an extent as to instrument durability is low, and the hole low precision of processing causes workpiece to scrap in a large number or defective.
In order to improve the heat radiation of drill bit tip, to alleviate cutter shoulder, cross the phenomenon of cause thermal damage, a kind of method is leaned on outer radius rake face of reconditioning again in chip area rake face one side of fluted drill; Another kind method is at drill body, cooling bath to be set to help cooling fluid arrival drill bit tip.Although these methods have played thermolysis to a certain extent, effect is also not obvious, also can cause the generation of phenomenons such as causing that because reduce cutter sharpness machine torque warning and processing are scrapped in reality processing.
For the defect of above-mentioned technology, a kind of spiral bit of thinning has been proposed, as shown in Figure 1, its cutting edge is comprised of long arc shape blade 1 and short arc blade 2 its axial view, and completes chip breaking by blade 2.The spiral bit of another kind of thinning, as shown in Figure 2, its cutting edge is only linear pattern blade 3 to its axial view.These drill bits all, from shortening the length of the chisel edge part that cannot participate in cutting, to reduce drilling resistance, extend tool life.Although obtain certain effect, but due to the apex point part insufficient strength through reconditioning, in reality processing, the clamping error of cutter can make the cutter of duty beat, very easily cause the phenomenons such as tipping and breakage, shortened on the contrary life tools and caused part to scrap and device damage.
Or change the linear pattern cutting edge shown in Fig. 2 into circular arc type, by dispersive stress, strengthen the intensity of the apex point chisel edge part after reconditioning.But still come with some shortcomings, as: processing technology is complicated, need by the processing of high-performance numerical control grinding machine, just can make two circular arcs on cutting edge accurately be tangential on apex point part, and this kind equipment overwhelming majority belongs to import, expensive; Centering poor-performing, the centering ability of circular arc type apex point is far worse than common simple and easy thinning; Chip-breaking performance is not good, although circular arc type apex point has been protected apex point chisel edge, makes the smear metal in drilling can not get fully extension distortion yet, and smear metal can not be ruptured at all, and in actual processing, due to the winding of long smear metal, drill bit is often only processed and just fractureed and scrap for several times; Reconditioning more often cannot be carried out voluntarily to the circular arc type apex point drill bit with old in production scene, must send cutter manufacturing enterprise back to, reuses cost high.
Chinese invention patent application 201210084358.8 discloses a kind of fluted drill that bores high strength, high hardness alloy material essence hole, proposed a kind of major cutting edge by multi-ladder, it also comprises the technical scheme that web thinning the inner edge part forming and the sword that weighs are formed by connecting.Its technical way is the main cutting edge that the oblique sword of multistage ladder, the flat sword of multistage ladder, multistage guiding sword, ream sword and ream wiper edges are formed.This structure can be carried out high accurate hole drilling to multiple material.Once complete brill, strand work, can increase substantially drilling efficiency, hole crudy and drill bit durability.
Utility model content
An object of the present utility model is to provide a kind of high strength high durable drill bit, on the basis of the fluted drill of applying in routine, apex point is carried out to thinning, lower cutting resistance, improve service life, when guaranteeing abundant chip breaking, take into account the cutter of reusing cost.
Another object of the present utility model is to provide a kind of high strength high durable drill bit, on the basis of the fluted drill of applying in routine, apex point is carried out to thinning, has the cutter of higher centering performance.
These drill bits that the utility model provides comprise an elongated bodies member, there is a longitudinal axis, can be installed to shank on rotating machinery and a cutting termination, the first cutting edge and the second cutting edge are at least contained in cutting termination, and the relative bilateral symmetry of axis arrange.Concrete, these drill bits that the utility model provides belong to a kind of fluted drill.
These drill bits that the utility model provides, its cutting termination also comprises the major first flank of the first cutting edge, the second rear knife face of the first cutting edge, the second rear knife face of the major first flank of the second cutting edge, the second cutting edge, the first chisel edge machined surface and the second chisel edge machined surface.The second rear knife face of the major first flank of the first cutting edge and the first cutting edge intersects, and the second rear knife face of the major first flank of the second cutting edge and the second cutting edge intersects.
The embodiment of a kind of the first chisel edge machined surface that the utility model provides, is surrounded by the section at the second rear knife face edge of the first cutting edge and adjacent helicla flute edge.
The embodiment of another kind the first chisel edge machined surface that the utility model provides, is surrounded by the section at section of the second rear knife face edge of the first cutting edge, cutting outer, termination and adjacent helicla flute edge.
The embodiment of a kind of the second chisel edge machined surface that the utility model provides, is surrounded by the section at the second rear knife face edge of the second cutting edge and adjacent helicla flute edge.
The embodiment of another kind the second chisel edge machined surface that the utility model provides, by the second rear knife face edge of the second cutting edge, a section at another section of cutting outer, termination and adjacent helicla flute edge surrounded.
The embodiment of the high durable drill bit of a kind of high strength that the utility model provides, its first cutting edge also comprises
The first main cutting portion, its one end is extended and is intersected in cutting outer, termination;
The first chisel edge portion, it is the straight line sword of one end and axes intersect;
The first cutting connecting portion, is circular arc, radius 0.2mm-9.6mm, and its two ends link up smoothly with the first main cutting portion and the first chisel edge portion respectively;
Its second cutting edge also comprises
The second main cutting portion, its one end is extended and is intersected in cutting outer, termination;
The second chisel edge portion, it is the straight line sword of one end and axes intersect;
The second cutting connecting portion, is circular arc, radius 0.2mm-9.6mm, and its two ends link up smoothly with the second main cutting portion and the second chisel edge portion respectively;
Preferential select, the first chisel edge portion with the second chisel edge portion in the relative bilateral symmetry setting of axis.
Preferential selection, when the first cutting connecting portion and second cuts connecting portion when the relative bilateral symmetry of axis arranges, can farthest realize cutting effect.
The beneficial effect that technical solutions of the utility model realize:
The high durable drill bit of the utility model high strength, carries out thinning to the apex point of existing fluted drill, forms the connecting portion angle of throat of at least 2 linear chisel edge portions and 2 circular arcs.Each chisel edge portion arranges at the relative both sides Central Symmetry of axis; Each connecting portion angle of throat arranges at the relative both sides Central Symmetry of axis.Thus, significantly strengthen drill bit centering, made the hole surface fineness of machining hole can reach ▽ 4 ranks; The chip breaking ability that has significantly strengthened drill bit, linear pattern thinning has partly aggravated smear metal distortion, and chip breaking situation is obviously improved; Apex point part through reconditioning has significantly reduced cutting resistance and has protected chisel edge part, and durability improves more than 1 times, and extended service life.
The high durable drill bit of the utility model high strength, realized the simplification of reconditioning again, both can be on Digit Control Machine Tool reconditioning or/and processing also can be carried out common thinning on non-Digit Control Machine Tool, then with the circular arc of the hand tools chips sword connecting portions such as abrasive brush.
Accompanying drawing explanation
Fig. 1 is the radial structure schematic diagram of prior art drill bit one embodiment;
Fig. 2 is the radial structure schematic diagram of another embodiment of prior art drill bit;
Fig. 3 is the transversary schematic diagram of the whole embodiment of the utility model drill bit;
Fig. 4 is the radial structure schematic diagram of drill bit shown in Fig. 1;
Fig. 5 is the radial structure schematic diagram of another embodiment of the utility model drill bit;
Fig. 6 is the radial structure schematic diagram of another embodiment of the utility model drill bit;
Fig. 7 is the radial structure schematic diagram of another embodiment of the utility model drill bit.
The specific embodiment
Below in conjunction with accompanying drawing, describe the technical solution of the utility model in detail.The utility model embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical scheme of utility model, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in claim scope of the present utility model.
Fig. 3 is the transversary schematic diagram of the whole embodiment of the high durable drill bit of the utility model high strength, and Fig. 4 is the radial structure schematic diagram of drill bit shown in Fig. 3, and Fig. 5 is the radial structure schematic diagram of another embodiment of the utility model drill bit.As shown in Figure 3, this drill bit has a longitudinal axis 400, can be installed to shank 500 and a cutting termination 600 on rotating machinery.
In conjunction with Fig. 3, as shown in Figure 4 and Figure 5, cutting termination 600, comprise the first main cutting edge 110, the first cutting connecting portion 130 and be located at the first chisel edge portion 120 of axis one side, the first cutting connecting portion 130 two ends link up smoothly with the first main cutting edge 110 and the first chisel edge portion 120 respectively, one end of the first main cutting edge 110 is extended and is intersected in cutting outer, termination 610, and one end of the first chisel edge portion 120 and longitudinal axis 400 intersect.An embodiment for preferential selection, in the relative side of this axis, with the first chisel edge portion 120 Central Symmetries the second chisel edge portion 220 is set.Meanwhile, in the relative both sides of axis 400, arrange and centrosymmetric the second cutting connecting portion 230 of the first cutting connecting portion 130.The two ends of the second cutting connecting portion 230 link up smoothly with the second main cutting edge 210 and the second chisel edge portion 220 respectively, and one end of the second main cutting edge 210 is extended and intersected in cutting outer, termination 610.Thus, in the relative both sides of axis, the first main cutting edge 110 and the second main cutting edge 210 arrange also in a center of symmetryly.
The first chisel edge minister degree B or the second chisel edge minister degree are preferentially selected 0.1mm-3.3mm, or are selected from arbitrary scope of 0.1mm-1.1mm, 1.1mm-2.1mm and 2.1mm-3.3mm.Concrete, as: but be not limited only to 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm and 3.3mm.In the present embodiment, the first chisel edge minister degree is identical with the second chisel edge minister degree.
The first angle D of chisel edge portion or the second chisel edge minister degree are preferential selects 15 °-65 °, or is selected from arbitrary scope of 15 °-25 °, 25 °-35 °, 35 °-45 °, 45 °-55 ° and 55 °-65 °.In the present embodiment, the first chisel edge portion angle is identical with the second chisel edge portion angle.
In the present embodiment, the first cutting connecting portion is circular arc, radius 0.2mm-9.6mm, or be selected from arbitrary scope of 0.2mm-2.2mm, 2.2mm-4.2mm, 4.2mm-6.2mm, 6.2mm-8.2mm and 8.2mm-9.6mm.
In the present embodiment, the second cutting connecting portion is circular arc, radius 0.2mm-9.6mm, or be selected from arbitrary scope of 0.2mm-2.2mm, 2.2mm-4.2mm, 4.2mm-6.2mm, 6.2mm-8.2mm and 8.2mm-9.6mm.
Fig. 6 is the radial structure schematic diagram of another embodiment of the utility model drill bit, and Fig. 7 is the radial structure schematic diagram of another embodiment of the utility model drill bit.As shown in Figure 6 and Figure 7, along the first cutting edge 100(, comprise the first main cutting edge 110, the first cutting connecting portion 130 and the first chisel edge portion 120 that is located at axis one side) side extends to form the major first flank 140 of the first cutting edge in cutting end, continuation is with the edge 141 of this major first flank 140, and around the intersection of this edge and axis, at cutting end head surface, rotate and form the second extension edge along 151, edge 141, the second extension edge is along 151, and the region that a section 611 of cutting outer, termination 610 surrounds is jointly the second rear knife face 150 of the first cutting edge.
Along the second cutting edge 200(, comprising the second main cutting edge 210, the second cutting connecting portion 230 and be located at the second chisel edge portion 220 of axis one side) side extends to form the major first flank 240 of the second cutting edge in cutting end, continuation is with the edge 241 of this major first flank 240, and around the intersection of this edge and axis, at cutting end head surface, rotate and form the second extension edge along 251, edge 241, the second extension edge are along 251, and the region that another section 612 of cutting outer, termination 610 surrounds is jointly the second rear knife face 250 of the second cutting edge.Preferential selection, in the present embodiment, the major first flank 140 of the first cutting edge arranges at the relative both sides Central Symmetry of axis with the major first flank 240 of the second cutting edge, and the second rear knife face 150 of the first cutting edge arranges at the relative both sides Central Symmetry of axis with the second rear knife face 250 of the second cutting edge.
In the present embodiment, also comprise the first chisel edge machined surface 121, its region (referring to Fig. 6) for being surrounded with the section at the edge 320 of adjacent helicla flute 300 along 251 by the second extension edge of the second cutting edge; Or be by the second extension edge of the second cutting edge along 251, another section 613 of cutting outer, termination, the region (referring to Fig. 7) surrounding with the section at the edge 320 of adjacent helicla flute 300.
In the present embodiment, also comprise the second chisel edge machined surface 221, its region (referring to Fig. 6) for being surrounded with the section at the edge 310 of adjacent helicla flute 300 along 151 by the second extension edge of the first cutting edge; Or be by the second extension edge of the first cutting edge along 151, another section 614 of cutting outer, termination, the region (referring to Fig. 7) surrounding with the section at the edge 310 of adjacent helicla flute 300.
Preferential selection, in the present embodiment, the first chisel edge machined surface 121 arranges at the relative both sides Central Symmetry of axis with the second chisel edge machined surface 221.
The drill bit that the present embodiment is provided, or on Digit Control Machine Tool reconditioning or/and processing also can be carried out common thinning, then with hand tools Machining Arcs such as abrasive brush on non-Digit Control Machine Tool.Be particularly useful for the processing of various high-hardness (as: but being not limited only to high temperature alloy and glass hard steel, quenched and tempered steel etc.), the contrast situation of its processing characteristics is in Table 1.
The processing characteristics of the various drill bits of table 1 to the processed material of difference
Claims (10)
1. the high durable drill bit of a high strength, include a longitudinal axis, can be installed to shank and a cutting termination on rotating machinery, the first cutting edge and the second cutting edge are at least contained in the cutting termination described in it is characterized in that, and the relative bilateral symmetry of axis arrange
The first described cutting edge comprises
The first main cutting portion, its one end is extended and is intersected in described outer, cutting termination;
The first chisel edge portion, it is the straight line sword of one end and described axes intersect;
The first cutting connecting portion, is circular arc, and its two ends link up smoothly with described the first cutting edge and described the first chisel edge portion respectively;
The second described cutting edge also comprises
The second main cutting portion, its one end is extended and is intersected in described outer, cutting termination;
The second chisel edge portion, it is the straight line sword of one end and described axes intersect;
The second cutting connecting portion, is circular arc, and its two ends link up smoothly with described the second cutting edge and described the second chisel edge portion respectively.
2. the high durable drill bit of high strength according to claim 1, is characterized in that the radius of described the first cutting connecting portion is 0.2mm-9.6mm.
3. the high durable drill bit of high strength according to claim 1, is characterized in that the radius of described the second cutting connecting portion is 0.2mm-9.6mm.
4. the high durable drill bit of high strength according to claim 1, the length that it is characterized in that described the first chisel edge portion is 0.1mm-3.3mm, angle is 15 °-65 °.
5. the high durable drill bit of high strength according to claim 1, the length that it is characterized in that described the second chisel edge portion is 0.1mm-3.3mm, angle is 15 °-65 °.
6. the high durable drill bit of high strength according to claim 1, characterized by further comprising the major first flank of the first cutting edge, the second rear knife face of the first cutting edge, the second rear knife face of the major first flank of the second cutting edge, the second cutting edge, the first chisel edge machined surface and the second chisel edge machined surface.
7. the high durable drill bit of high strength according to claim 6, is characterized in that the first described chisel edge machined surface is surrounded by a section at the second rear knife face edge of the first described cutting edge and adjacent helicla flute edge.
8. the high durable drill bit of high strength according to claim 6, is characterized in that the second described chisel edge machined surface is surrounded by a section at the second rear knife face edge of the second described cutting edge and adjacent helicla flute edge.
9. the high durable drill bit of high strength according to claim 6, is characterized in that the first described chisel edge machined surface by the second rear knife face edge of the first described cutting edge, a section at section of the outer of described cutting termination and adjacent helicla flute edge is surrounded.
10. the high durable drill bit of high strength according to claim 6, is characterized in that the second described chisel edge machined surface by the second rear knife face edge of the second described cutting edge, a section at section of the outer of described cutting termination and adjacent helicla flute edge is surrounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464701.1U CN203401119U (en) | 2013-07-31 | 2013-07-31 | High-strength highly-durable drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464701.1U CN203401119U (en) | 2013-07-31 | 2013-07-31 | High-strength highly-durable drill |
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| Publication Number | Publication Date |
|---|---|
| CN203401119U true CN203401119U (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464701.1U Expired - Lifetime CN203401119U (en) | 2013-07-31 | 2013-07-31 | High-strength highly-durable drill |
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| CN (1) | CN203401119U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338978A (en) * | 2013-07-31 | 2015-02-11 | 上海名古屋精密工具股份有限公司 | High-strength highly-durable drill bit |
| JP2018518376A (en) * | 2015-05-08 | 2018-07-12 | テグテック リミテッドＴａｅｇｕＴｅｃ Ｌｔｄ． | Cutting tools |
-
2013
- 2013-07-31 CN CN201320464701.1U patent/CN203401119U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338978A (en) * | 2013-07-31 | 2015-02-11 | 上海名古屋精密工具股份有限公司 | High-strength highly-durable drill bit |
| CN104338978B (en) * | 2013-07-31 | 2017-08-04 | 上海名古屋精密工具股份有限公司 | The high durable drill bit of high intensity |
| JP2018518376A (en) * | 2015-05-08 | 2018-07-12 | テグテック リミテッドＴａｅｇｕＴｅｃ Ｌｔｄ． | Cutting tools |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221128 Address after: 611833 Block B, No. 6 Jinteng Road, Dujiangyan Economic Development Zone, Chengdu, Sichuan Patentee after: CHENGDU YUJU SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 201801 Fanjia village, Malu Town, Jiading District, Shanghai Patentee before: SHANGHAI NAGOYA PRECISION TOOLS Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |