CN104493264A - Stepped drill integrated with drilling and chamfering functions - Google Patents
Stepped drill integrated with drilling and chamfering functions Download PDFInfo
- Publication number
- CN104493264A CN104493264A CN201410507738.7A CN201410507738A CN104493264A CN 104493264 A CN104493264 A CN 104493264A CN 201410507738 A CN201410507738 A CN 201410507738A CN 104493264 A CN104493264 A CN 104493264A
- Authority
- CN
- China
- Prior art keywords
- chamfering
- segment
- cutting
- bottom outlet
- blades
- 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
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- 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
- B23B51/10—Bits for countersinking
- B23B51/103—Deburring or chamfering tools for the ends of tubes or rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention relates to a stepped drill integrated with drilling and chamfering functions. The stepped drill comprises a handle portion and a blade portion; the blade portion comprises a bottom hole drilling segment at the front end and a chamfering cutting segment behind the bottom hole drilling segment; the bottom hole drilling segment and the chamfering cutting segment are coaxial; two spiral bottom hole cutting blades are formed on the bottom hole drilling segment, and a chip removal groove is formed between the two bottom hole cutting blades; two chamfering blades are formed at the front end of the chamfering cutting segment, and the bottom hole cutting blades extend outwards to form chamfering blades; a 90-degree angle is formed between the two chamfering blades; and the length of the chamfering blades is 1/4 to 1/3 that of the bottom hole drilling segment, and the chip removal groove spirally extends to the chamfering cutting segment. Compared with the prior art, the stepped drill is integrated with the drilling and chamfering functions at the same time, and man hours of an operator are reduced; procurement of a machine tool is reduced, the production cost is reduced, and the production efficiency is improved; and meanwhile, due to the fact that bottom holes and chamfers are integrally formed, the precision of the chamfers is much higher than that of chamfers machined through two working procedures.
Description
Technical field
The present invention relates to a kind of step drill, especially relate to a kind of step drill integrating boring and chamfering function.
Background technology
At present, need two step manufacturing procedures when thread mill drilling bottom outlet, subdrilling bottom outlet, then chamfering, this processing mode takes time and effort, and increases cost of parts, and on the bottom outlet formerly formed in addition during chamfering, chamfering precision is not easy to control.
The step drill of current existence uses when being all generally the hole of processing two kinds of different pore sizes, its lower end processing fine pore, processing gross porosity footpath, upper end, and does not generally have transition or rounding off between two sector hole footpaths, can not form chamfering between two sector hole footpaths.
Summary of the invention
Object of the present invention is exactly provide to overcome defect that above-mentioned prior art exists that a kind of structure is simple, the step drill integrating boring and chamfering function of production cost of enhancing productivity, reduce.
Object of the present invention can be achieved through the following technical solutions:
A kind of step drill integrating boring and chamfering function, comprise shank and blade, described blade comprises the bottom outlet drilling section that is positioned at front end and the chamfering segment of cutting after being positioned at bottom outlet drilling section, described bottom outlet drilling section is coaxial with chamfering segment of cutting, described bottom outlet drilling section offers spiral helicine two bottom outlet cutting edges, between two bottom outlet cutting edges, forms chip area; Described chamfering segment of cutting front end offers two chamfering blades, described chamfering blades to stretch out formation along bottom outlet cutting edge, the length of described chamfering blades is 1/4 ~ 1/3 of bottom outlet drilling segment length, article two, the angle between chamfering blades is 90 °, and described chip area is along spiral extension to chamfering segment of cutting.
The diameter of described bottom outlet drilling section is the half of shank diameter, and the length of described bottom outlet drilling section is 2 times of bottom outlet drilling section diameter, and the drift angle of described bottom outlet drilling section is 115 °.
The diameter of described chamfering segment of cutting is identical with shank diameter, and the length of described chamfering segment of cutting is 1 ~ 1.5 times of chamfering segment of cutting diameter.
The cross section of described shank is circular, and it is the foursquare clamping part of band chamfering that cross section is offered in shank rear end.
The length of described shank is identical with blade length.
Described edge portion surfaces is coated with titanium aluminum nitride coating.
Compared with prior art, vibrational power flow of the present invention is ingenious, its bottom outlet drilling section, chamfering segment of cutting, cutting edge L/D ratio example relation arrange meet process bottom outlet while, 45 degree of chamferings are formed at the edge of bottom outlet, use step drill of the present invention integrated boring simultaneously and chamfering two functions, when reducing operative employee, reduce the buying of lathe, reduce production cost, and enhance productivity, simultaneously due to one-body molded bottom outlet and chamfering, the accuracy of chamfering is more high than employing two step operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of step drill of the present invention.
Number in the figure: 1 is bottom outlet drilling section, and 11 is bottom outlet cutting edge, and 12 is chip area, and 2 is chamfering segment of cutting, and 21 is chamfering blades, and 3 is shank, and 4 is clamping part.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of step drill integrating boring and chamfering function, as shown in Figure 1, comprise shank 3 and blade, blade comprises the bottom outlet drilling section 1 that is positioned at front end and the chamfering segment of cutting 2 after being positioned at bottom outlet drilling section 1, bottom outlet drilling section 1 is coaxial with chamfering segment of cutting 2, bottom outlet drilling section 1 offers between spiral helicine two bottom outlet cutting edges 11, two bottom outlet cutting edges 11 and form chip area 12; Chamfering segment of cutting 2 front end offers two chamfering blades 21, chamfering blades 21 to stretch out formation along bottom outlet cutting edge 11, the length of chamfering blades 21 is 1/4 ~ 1/3 of bottom outlet drilling section 1 length, in the present embodiment, the length of chamfering blades 21 is 1/4 of bottom outlet drilling section 1 length, article two, the angle between chamfering blades 21 is 90 °, and chip area 12 is along spiral extension to chamfering segment of cutting 2.
Wherein, the diameter of bottom outlet drilling section 1 is the half of shank 3 diameter, and the length of bottom outlet drilling section 1 is 2 times of bottom outlet drilling section 1 diameter, and the drift angle of bottom outlet drilling section 1 is 115 °.The diameter of chamfering segment of cutting 2 is identical with shank 3 diameter, and the length of chamfering segment of cutting 2 is 1 ~ 1.5 times of chamfering segment of cutting 2 diameter.The cross section of shank 3 is circular, and it is the foursquare clamping part 4 of band chamfering that cross section is offered in shank 3 rear end.The length of shank 3 is identical with blade length.
Edge portion surfaces is coated with titanium aluminum nitride coating.
While the L/D ratio example relation of the bottom outlet drilling section 1 of the present embodiment, chamfering segment of cutting 2, cutting edge 11 arranges and meets and process bottom outlet, 45 degree of chamferings are formed at the edge of bottom outlet, use step drill integrated boring simultaneously and chamfering two functions of the present embodiment, when reducing operative employee, reduce the buying of lathe, reduce production cost, and enhance productivity, simultaneously due to one-body molded bottom outlet and chamfering, the accuracy of chamfering is more high than employing two step operation.
Above-mentioned is can understand and use invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (6)
1. one kind integrates the step drill of boring and chamfering function, it is characterized in that, comprise shank and blade, described blade comprises the bottom outlet drilling section that is positioned at front end and the chamfering segment of cutting after being positioned at bottom outlet drilling section, described bottom outlet drilling section is coaxial with chamfering segment of cutting, described bottom outlet drilling section offers spiral helicine two bottom outlet cutting edges, between two bottom outlet cutting edges, forms chip area; Described chamfering segment of cutting front end offers two chamfering blades, described chamfering blades to stretch out formation along bottom outlet cutting edge, article two, the angle between chamfering blades is 90 °, the length of described chamfering blades is 1/4 ~ 1/3 of bottom outlet drilling segment length, and described chip area is along spiral extension to chamfering segment of cutting.
2. a kind of step drill integrating boring and chamfering function according to claim 1, it is characterized in that, the diameter of described bottom outlet drilling section is the half of shank diameter, the length of described bottom outlet drilling section is 2 times of bottom outlet drilling section diameter, and the drift angle of described bottom outlet drilling section is 115 °.
3. a kind of step drill integrating boring and chamfering function according to claim 1, it is characterized in that, the diameter of described chamfering segment of cutting is identical with shank diameter, and the length of described chamfering segment of cutting is 1 ~ 1.5 times of chamfering segment of cutting diameter.
4. a kind of step drill integrating boring and chamfering function according to claim 1, is characterized in that, the cross section of described shank is circular, and it is the foursquare clamping part of band chamfering that cross section is offered in shank rear end.
5. a kind of step drill integrating boring and chamfering function according to claim 1, it is characterized in that, the length of described shank is identical with blade length.
6. a kind of step drill integrating boring and chamfering function according to claim 1, it is characterized in that, described edge portion surfaces is coated with titanium aluminum nitride coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507738.7A CN104493264A (en) | 2014-09-28 | 2014-09-28 | Stepped drill integrated with drilling and chamfering functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507738.7A CN104493264A (en) | 2014-09-28 | 2014-09-28 | Stepped drill integrated with drilling and chamfering functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104493264A true CN104493264A (en) | 2015-04-08 |
Family
ID=52934764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410507738.7A Pending CN104493264A (en) | 2014-09-28 | 2014-09-28 | Stepped drill integrated with drilling and chamfering functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104493264A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312636A (en) * | 2015-04-27 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Drill bit with double chip removal channels for printed circuit board (PCB) |
| CN105834493A (en) * | 2016-05-05 | 2016-08-10 | 覃世文 | Stepped drill bit for Buddha bead hole machining |
| CN106624075A (en) * | 2016-12-20 | 2017-05-10 | 江西杰浩硬质合金工具有限公司 | Step molding drill for pore forming on carbon fiber plate |
| CN110842259A (en) * | 2019-11-11 | 2020-02-28 | 株洲钻石切削刀具股份有限公司 | Twist drill for processing laminated welding steel holes |
| CN110860722A (en) * | 2019-10-21 | 2020-03-06 | 广东鼎泰高科精工科技有限公司 | Stepped drill for processing high-temperature alloy |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007007831A (en) * | 2005-07-04 | 2007-01-18 | Osg Corp | Stepped drill |
| JP2009184043A (en) * | 2008-02-05 | 2009-08-20 | Tungaloy Corp | Stepped twist drill and method of manufacturing the same |
| CN102489753A (en) * | 2011-12-07 | 2012-06-13 | 苏州阿诺精密切削技术股份有限公司 | Non-cogrooved step drill |
| CN203018804U (en) * | 2012-12-21 | 2013-06-26 | 浙江欣兴工具有限公司 | Steel plate drill with chamfering function |
| CN203171033U (en) * | 2013-04-06 | 2013-09-04 | 上海冠钻精密工具有限公司 | Multi-stage composite chamfering forming drill |
| CN204194898U (en) * | 2014-09-28 | 2015-03-11 | 上海奥林汽车安全系统有限公司 | Integrate the step drill of boring and chamfering function |
-
2014
- 2014-09-28 CN CN201410507738.7A patent/CN104493264A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007007831A (en) * | 2005-07-04 | 2007-01-18 | Osg Corp | Stepped drill |
| JP2009184043A (en) * | 2008-02-05 | 2009-08-20 | Tungaloy Corp | Stepped twist drill and method of manufacturing the same |
| CN102489753A (en) * | 2011-12-07 | 2012-06-13 | 苏州阿诺精密切削技术股份有限公司 | Non-cogrooved step drill |
| CN203018804U (en) * | 2012-12-21 | 2013-06-26 | 浙江欣兴工具有限公司 | Steel plate drill with chamfering function |
| CN203171033U (en) * | 2013-04-06 | 2013-09-04 | 上海冠钻精密工具有限公司 | Multi-stage composite chamfering forming drill |
| CN204194898U (en) * | 2014-09-28 | 2015-03-11 | 上海奥林汽车安全系统有限公司 | Integrate the step drill of boring and chamfering function |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312636A (en) * | 2015-04-27 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Drill bit with double chip removal channels for printed circuit board (PCB) |
| CN105834493A (en) * | 2016-05-05 | 2016-08-10 | 覃世文 | Stepped drill bit for Buddha bead hole machining |
| CN106624075A (en) * | 2016-12-20 | 2017-05-10 | 江西杰浩硬质合金工具有限公司 | Step molding drill for pore forming on carbon fiber plate |
| CN106624075B (en) * | 2016-12-20 | 2018-12-18 | 江西杰浩硬质合金工具有限公司 | The molding step drill of the drilling on carbon fiber board |
| CN110860722A (en) * | 2019-10-21 | 2020-03-06 | 广东鼎泰高科精工科技有限公司 | Stepped drill for processing high-temperature alloy |
| CN110842259A (en) * | 2019-11-11 | 2020-02-28 | 株洲钻石切削刀具股份有限公司 | Twist drill for processing laminated welding steel holes |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |
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| RJ01 | Rejection of invention patent application after publication |