CN104607700A - Step hole forming drill - Google Patents
Step hole forming drill Download PDFInfo
- Publication number
- CN104607700A CN104607700A CN201510053851.7A CN201510053851A CN104607700A CN 104607700 A CN104607700 A CN 104607700A CN 201510053851 A CN201510053851 A CN 201510053851A CN 104607700 A CN104607700 A CN 104607700A
- Authority
- CN
- China
- Prior art keywords
- step hole
- edge
- cutting
- cutting edge
- bores
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/009—Stepped drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/20—Number of cutting edges
- B23B2251/202—Three cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/24—Overall form of drilling tools
- B23B2251/241—Cross sections of the diameter of the drill
- B23B2251/242—Cross sections of the diameter of the drill increasing in a direction towards the shank from the tool tip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/04—Drills for trepanning
- B23B51/0411—Drills for trepanning with stepped tubular cutting bodies
Abstract
The invention provides a step hole forming drill. The step hole forming drill comprises a cutting part, a reaming part and a cutter handle part, wherein the cutting part is provided with a cutting blade and a corresponding first cutter back, the cutting edge is formed on the edge of the first cutter back, the cutting edge of the cutting blade is a straight cutting edge, the cutting blade comprises a cross blade body, an inner blade body and a main blade body, the cross blade body, the inner blade body and the main blade body are connected, the inner blade body is located between the cross blade body and the main blade body, the diameter of the reaming part is larger than the diameter of the cutting part, the reaming part is provided with a second cutter back, a reaming blade is formed on the edge of the second cutter back, and a chip groove of the step hole forming drill is formed by the first cutter back and the second cutter back. According to the step hole forming drill, the problem that when an existing drill bit is used for machining a bolt hole in a high-strength blocking connecting rod, the machining efficiency is low is solved. When the step hole forming drill is used for machining the bolt hole in the high-strength blocking connecting rod, one-time forming can be achieved, and machining efficiency is high; in addition, the strength of the cutting edge of the step hole forming drill is high, the cutting edge of the step hole forming drill can bear large cutting force, the chip removal performance is high, and the service life is long.
Description
Technical field
The present invention relates to cutting-tool engineering field, particularly relate to a kind of step hole molding being applicable to the processing of high strength blocking-up connecting rod upper bolt hole and bore.
Background technology
As shown in Figure 1, bolt hole is processed as the necessary operation of connecting rod production process, and wherein, bolt hole is divided into hole) and lower opening, the diameter of the two is respectively D1 and D2, and described upper bore dia is large compared with lower bore dia.As shown in Figure 1, be cusp A at the bottom of plain connecting rod bolt hole hole, this cusp A in drill bit process by point of a knife self-assembling formation.
But high strength blocks connecting rod and requires without cusp at the bottom of hole, as shown in Figure 2, wherein R angle transition structure.For achieving the above object, blocking the common processing method of connecting rod bolt holes is: 1. use one hole on drill bit processing bolt hole; 2. use another drill bit processing bolt hole lower opening, now the point of a knife point of this drill bit leaves cusp at the bottom of hole; 3. re-use corresponding shaping reamer the cusp formed is removed.
Thus, need use three sections of cutters to process this bolt hole altogether.Process time is: t*3 (three tool change times)+L1/F (in processing hole time)+L2/F*2 (boring lower opening time and hinge lower opening time).Therefore, due to needs repeatedly tool changing, and add many non-cutting times, working (machining) efficiency is lower, and the cost of charp tool is higher.Wherein, setting t is each tool changing required time of lathe, uses three altogether cutter, therefore total tool change time is t*3; It is F that setting adds man-hour feed speed, should be processing distance process time divided by feed speed, therefore drilled process time is L1/F; Boring and cutting with scissors the lower opening time is all L2/F.
Therefore, for solving the problem, be necessary to propose further solution.
Summary of the invention
A kind of step hole molding is the object of the present invention is to provide to bore, to overcome the deficiencies in the prior art.
For achieving the above object, the invention provides a kind of step hole molding and bore, it comprises: cutting portion, reamer and shank section; Described cutting portion is formed at one end of described reamer, and described shank section is formed at the other end of described reamer, and described cutting portion, reamer and shank section are coaxially arranged;
Described cutting portion has cutting edge and corresponding first knife back, described cutting edge is formed at the edge of described first knife back, the cutting edge of described cutting edge is straight cutting edge, described cutting edge comprises chisel edge, inner edge and main sword, described chisel edge, inner edge and main sword are interconnected, and described inner edge is between described chisel edge and main sword;
The diameter of described reamer is greater than the diameter of described cutting portion, and described reamer has second knife back, and described second knife back edge forms reaming sword;
Described first knife back and second knife back form the chip area that step hole molding bores.
As the improvement that step hole molding of the present invention bores, the shaping R angle of described cutting edge is 1.0 ~ 2.5.
As the improvement that step hole molding of the present invention bores, described first knife back and second knife back are made of one piece.
As the improvement that step hole molding of the present invention bores, described step hole molding also offers interior cold hole on boring, and the through described step hole molding in described interior cold hole is drilled with to be put, and described interior cold hole is parallel to the axial direction that described step hole molding bores.
As the improvement that step hole molding of the present invention bores, described interior cold hole is two.
As the improvement that step hole molding of the present invention bores, described chip area is two, and takes polishing to chip area.Corresponding described two chip areas, described cutting edge and reaming sword are two.
Compared with prior art, the invention has the beneficial effects as follows: step hole molding of the present invention bores the problem that when overcoming existing drill bit processing high strength blocking-up connecting rod upper bolt hole, working (machining) efficiency is low, it is when high strength blocks processing bolt hole on connecting rod, can one-shot forming, and working (machining) efficiency is high; And step hole molding brill cutting edge strength of the present invention is high, can bear larger cutting force, chip removal performance is good, long service life.
Accompanying drawing explanation
Fig. 1 is the floor map of the bolt hole at the bottom of hole with cusp;
Fig. 2 is the floor map without the bolt hole of cusp at the bottom of hole;
Fig. 3 is the floor map of the detailed description of the invention that step hole molding of the present invention bores;
Fig. 4 is the side-looking enlarged drawing that in Fig. 3, step hole molding bores.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Change as shown in Figure 3,4 and amendment.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to right.
As shown in Figure 3,4, step hole molding brill 100 of the present invention comprises: cutting portion 10, reamer 20 and shank section 30.Wherein, described cutting portion 10 is formed at one end of described reamer 20, and described shank section 30 is formed at the other end of described reamer 20, and described cutting portion 10, reamer 20 and shank section 30 are coaxially arranged.
Described cutting portion 10 carries out perforate and cutting for blocking connecting rod to high strength, and it has cutting edge and corresponding first knife back 12.Described cutting edge is formed at the edge of described first knife back 12, and the cutting edge of described cutting edge is straight cutting edge.Setting like this, greatly strengthen cutting edge strength, improves the life-span of cutter.Described cutting edge specifically comprises chisel edge 110, inner edge 111 and main sword 112, and described chisel edge 110, inner edge 111 and main sword 112 are interconnected, and described inner edge 111 is between described chisel edge 110 and main sword 112.In addition, the point of a knife place of described cutting edge adopts larger R angle, and this R angle is 1.0 ~ 2.5.So can ensure the R angle forming requirements at the bottom of processed bolt hole hole.
Described reamer 20 expands for the hole offered by cutting portion 10, forms the upper hole of respective bolt holes.Thus the diameter of this reamer 20 is greater than the diameter of described cutting portion 10, this reamer 20 has second knife back 21, and described second knife back 21 edge forms reaming sword.Further, described first knife back 12 and second knife back 21 are made of one piece, and namely cutting edge and reaming sword share the same knife back.
Described first knife back 12 and second knife back 21 form the chip area 40 that step hole molding bores, and this chip area 40 is for discharging the iron filings produced during boring.In addition polishing is taken to chip area, be beneficial to chip removal, improve cutter life equally.As required, described chip area is two, and corresponding described many two chip areas, described cutting edge and reaming sword are two.
Described step hole molding bores on 100 and also offers interior cold hole 50, and this interior cold hole 50 is for injecting cooling fluid, and this cooling fluid can reduce cutting edge temperature during cutting on the one hand, thus reduces wearing and tearing, extends cutter life; When refluxing after access aperture with the cooling fluid of certain pressure on the other hand, the discharge of iron filings can be assisted.Particularly, the through described step hole molding in described interior cold hole 59 is drilled with to be put, and described interior cold hole 50 is parallel to the axial direction that described step hole molding bores, and preferably, described interior cold hole is two.
Shown shank section 30 forms the retained part that step hole molding of the present invention bores, for the installation that step hole molding bores.
Below, Binding experiment, tests the performance that step hole molding of the present invention bores.In test experiments, be that the high strength blocking-up connecting rod of C70 is processed object with model.Utilize step hole molding of the present invention bore and existing use many mode of drill bit respectively to high strength block connecting rod process, the working (machining) efficiency of both contrasts.Result is as shown in table 1:
Table 1
As can be seen here, when step hole molding drill point of the present invention blocks Machining of Connecting Rod bolt hole to high strength, there is higher working (machining) efficiency.
Thus step hole molding of the present invention bores and many moneys cutter is combined into a cutter, decrease the time repeating to process.Decrease repeatedly tool change time, working (machining) efficiency improves 48.14% simultaneously.During Tool Design, owing to adopting straight cutting edge form, enhance cutting edge strength, improve cutter life.When testing, the processing life-span reaches 104 meters, also substantially exceeds the normal drill bit processing life-span.From cost of charp tool aspect, former use three sections of cutters, substantially exceed the cost of a cutter, and by comparison, and step hole molding of the present invention brill cost performance is very high.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. a step hole molding bores, and it is characterized in that, described step hole molding bores and comprises: cutting portion, reamer and shank section; Described cutting portion is formed at one end of described reamer, and described shank section is formed at the other end of described reamer, and described cutting portion, reamer and shank section are coaxially arranged;
Described cutting portion has cutting edge and corresponding first knife back, described cutting edge is formed at the edge of described first knife back, the cutting edge of described cutting edge is straight cutting edge, described cutting edge comprises chisel edge, inner edge and main sword, described chisel edge, inner edge and main sword are interconnected, and described inner edge is between described chisel edge and main sword;
The diameter of described reamer is greater than the diameter of described cutting portion, and described reamer has second knife back, and described second knife back edge forms reaming sword;
Described first knife back and second knife back form the chip area that step hole molding bores.
2. step hole molding according to claim 1 bores, and it is characterized in that, the shaping R angle of described cutting edge is 1.0 ~ 2.5.
3. step hole molding according to claim 1 bores, and it is characterized in that, described first knife back and second knife back are made of one piece.
4. step hole molding according to claim 1 bores, and it is characterized in that, described step hole molding also offers interior cold hole on boring, and the through described step hole molding in described interior cold hole is drilled with to be put, and described interior cold hole is parallel to the axial direction that described step hole molding bores.
5. step hole molding according to claim 4 bores, and it is characterized in that, described interior cold hole is two.
6. step hole molding according to claim 1 bores, and it is characterized in that, described chip area is two, and takes polishing to chip area, and corresponding described two chip areas, described cutting edge and reaming sword are two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510053851.7A CN104607700A (en) | 2015-02-02 | 2015-02-02 | Step hole forming drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510053851.7A CN104607700A (en) | 2015-02-02 | 2015-02-02 | Step hole forming drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104607700A true CN104607700A (en) | 2015-05-13 |
Family
ID=53142491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510053851.7A Pending CN104607700A (en) | 2015-02-02 | 2015-02-02 | Step hole forming drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104607700A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480722A (en) * | 2018-06-11 | 2018-09-04 | 常熟市磊王合金工具有限公司 | A kind of interior cold subland drill of shank grooving lap guard bits |
| CN113458462A (en) * | 2020-03-30 | 2021-10-01 | 深圳市西科技术有限公司 | Stepped drill tool |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002172508A (en) * | 2000-12-06 | 2002-06-18 | Masayoshi Yoda | Drill |
| US20030202853A1 (en) * | 2002-04-24 | 2003-10-30 | Sung-Lim Ko | Step drill for minimization of burrs when drilling |
| DE20209768U1 (en) * | 2002-06-24 | 2003-11-27 | Gühring, Jörg, Dr. | Drill for drilling through sandwich-structure workpieces is in form of stepped drilling tool with smaller-diameter preliminary drilling sector |
| JP2007007831A (en) * | 2005-07-04 | 2007-01-18 | Osg Corp | Stepped drill |
| CN101733452A (en) * | 2010-01-03 | 2010-06-16 | 阿诺（苏州）刀具有限公司 | Drilling and reaming powerful drill |
| CN101856737A (en) * | 2009-04-07 | 2010-10-13 | 山特维克知识产权股份有限公司 | Solid step drill |
| JP2014054680A (en) * | 2012-09-11 | 2014-03-27 | Nachi Fujikoshi Corp | Stepped drill |
| CN104174899A (en) * | 2013-05-21 | 2014-12-03 | 苏州锑玛精密机械有限公司 | High-strength R angle drill |
| CN203992531U (en) * | 2014-08-12 | 2014-12-10 | 苏州用朴合金工具有限公司 | Powerful drill reamer at the bottom of a kind of cone |
| CN104245196A (en) * | 2012-03-26 | 2014-12-24 | 克莱斯博士玛帕精密仪器工厂两合公司 | Drill |
| CN204430372U (en) * | 2015-02-02 | 2015-07-01 | 苏州阿诺精密切削技术股份有限公司 | Step hole molding bores |
-
2015
- 2015-02-02 CN CN201510053851.7A patent/CN104607700A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002172508A (en) * | 2000-12-06 | 2002-06-18 | Masayoshi Yoda | Drill |
| US20030202853A1 (en) * | 2002-04-24 | 2003-10-30 | Sung-Lim Ko | Step drill for minimization of burrs when drilling |
| DE20209768U1 (en) * | 2002-06-24 | 2003-11-27 | Gühring, Jörg, Dr. | Drill for drilling through sandwich-structure workpieces is in form of stepped drilling tool with smaller-diameter preliminary drilling sector |
| JP2007007831A (en) * | 2005-07-04 | 2007-01-18 | Osg Corp | Stepped drill |
| CN101856737A (en) * | 2009-04-07 | 2010-10-13 | 山特维克知识产权股份有限公司 | Solid step drill |
| CN101733452A (en) * | 2010-01-03 | 2010-06-16 | 阿诺（苏州）刀具有限公司 | Drilling and reaming powerful drill |
| CN104245196A (en) * | 2012-03-26 | 2014-12-24 | 克莱斯博士玛帕精密仪器工厂两合公司 | Drill |
| JP2014054680A (en) * | 2012-09-11 | 2014-03-27 | Nachi Fujikoshi Corp | Stepped drill |
| CN104174899A (en) * | 2013-05-21 | 2014-12-03 | 苏州锑玛精密机械有限公司 | High-strength R angle drill |
| CN203992531U (en) * | 2014-08-12 | 2014-12-10 | 苏州用朴合金工具有限公司 | Powerful drill reamer at the bottom of a kind of cone |
| CN204430372U (en) * | 2015-02-02 | 2015-07-01 | 苏州阿诺精密切削技术股份有限公司 | Step hole molding bores |
Non-Patent Citations (2)
| Title |
|---|
| 沈志雄: "《金属切削原理与刀具（第2版）》", 31 January 2014 * |
| 王文丽: "《金属切削原理与刀具》", 30 June 2008 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480722A (en) * | 2018-06-11 | 2018-09-04 | 常熟市磊王合金工具有限公司 | A kind of interior cold subland drill of shank grooving lap guard bits |
| CN113458462A (en) * | 2020-03-30 | 2021-10-01 | 深圳市西科技术有限公司 | Stepped drill tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204639254U (en) | A kind of carbide drill reaming and milling composite cutter | |
| CN103121121B (en) | Indexable drilling bore chamfer compound cutter | |
| CN102950314B (en) | Alloy drilling reamer | |
| CN104384823A (en) | Method for machining titanium alloy pipe plate pipe hole | |
| CN102581355A (en) | Twist drill for drilling precision holes on high-strength and high-hardness alloy materials | |
| CN204108417U (en) | Staged fluted drill | |
| CN104607700A (en) | Step hole forming drill | |
| CN103157833A (en) | Longhole double-spiral inner-cooling drill bit | |
| CN204430372U (en) | Step hole molding bores | |
| CN206839240U (en) | A kind of hard alloy combines reamer | |
| CN206139882U (en) | Helical angle stereoplasm such as compound integral type of two sharp cutting drills hinge ream close system spot facing cutter | |
| EP2758200B1 (en) | Drill reamer | |
| CN102145394B (en) | Polycrystalline diamond drilling ream integrated cutter and processing method | |
| CN204430373U (en) | Multi-ladder contoured reamer | |
| CN208391098U (en) | A kind of shift case specific complex drills and reams milling cutter | |
| CN202804285U (en) | Drilling and milling cutter with orifice chamfering function | |
| CN203401121U (en) | Countersinking and reaming composite cutter for solid carbide drill | |
| CN202263964U (en) | Inner cold spiral-hole twist drill | |
| CN102581396A (en) | Drilling and milling screwer | |
| CN204975452U (en) | Optimize spot facing work drill bit of chip groove | |
| CN104338976A (en) | Durable drill | |
| CN103551633A (en) | Drilling and reaming processing cutter | |
| CN203711944U (en) | Durable drill | |
| CN203304646U (en) | Chip dividing straight flute bit | |
| CN204135347U (en) | Brill, boring, car multifunction turning instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Suzhou City, Jiangsu province 215122 Industrial Park Kuatang subarea Baoda Road No. 8 Applicant after: Suzhou Ahno Precision Cutting Technology Co., Ltd. Address before: Po Road Industrial Park in Suzhou city of Jiangsu Province, No. 8 215122 Applicant before: Suzhou Ahno Cutting Tool Technology Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150513 |