CN102266970A - Step drill - Google Patents
Step drill Download PDFInfo
- Publication number
- CN102266970A CN102266970A CN2011102148283A CN201110214828A CN102266970A CN 102266970 A CN102266970 A CN 102266970A CN 2011102148283 A CN2011102148283 A CN 2011102148283A CN 201110214828 A CN201110214828 A CN 201110214828A CN 102266970 A CN102266970 A CN 102266970A
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- section
- chip
- side edge
- step drill
- chip pocket
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Abstract
The invention provides a step drill, which can ensure smooth chip removal so as to improve the process safety and stability in the high-feed machining process. The step drill comprises a handle part and an edge part, wherein, the edge part comprises a first section close to the end part of the edge part and a second section close to the handle part, the diameter of the first section is less than that of the second section, the first section and the second section are axially equipped with parabolic grooves so as to form side edges and chip flutes, and the side edge of the second section is equipped with the second chip flute. During the hole machining process, firstly a workpiece is drilled by the side edge of the first section, and then chips are removed through the chip flute of the first section; and when the side edge of the second section participates in the drilling operation as the step drill is fed, the chip flute and the second chip flute of the second section can be adopted at the same time for removing the chips, and the increase of the chip flutes is more beneficial to removing the chips, thus achieving the purpose of timely and smoothly removing the iron scraps generated in the high-feed processing course, improving the production efficiency and ensuring the machining quality.
Description
Technical field
The invention belongs to cutter manufacturing technology field, specially refer to a kind of step drill.
Background technology
Drill bit is mainly used in the roughing in hole as an important component part in the machining usefulness cutter.Along with the development of mechanical industry, the user is to having proposed requirements at the higher level delivery date of the crudy of product, process reliability, working (machining) efficiency, cutter etc.Traditional step drill is adding man-hour, and along with the increase in aperture, iron filings can increase suddenly, chip removal has some setbacks, and adds at roughing feed and easily causes man-hour the boring inner surface to be scratched by iron filings, even cause the drill bit fracture, working (machining) efficiency and crudy are caused negative effect, therefore can increase processing cost.
Summary of the invention
The objective of the invention is to propose a kind of step drill, add at roughing feed and can guarantee that chip removal is smooth and easy man-hour, thereby improve process safety and stability.
Step drill of the present invention comprises shank and blade, described blade comprises second section near blade end first section and close shank, the diameter of described first section is less than the diameter of second section, described first section and second section be all along himself being axially arranged with parabola shaped groove forming side edge and chip pocket, and key is to offer second chip pocket on the side edge of described second section.
During machining hole, the side edge of first section at first carries out drilling to workpiece, and utilizes the chip pocket of first section to carry out chip removal; When feeding along with step drill, when the side edge of second section participates in drilling, just can utilize the chip pocket of second section and second chip pocket to carry out chip removal simultaneously, increasing of chip pocket more helps chip removal, therefore can discharge roughing feed in time, swimmingly and add the iron filings that produce man-hour, thereby can enhance productivity, guarantee crudy.
Further, described second chip pocket is opened in the sidepiece of the second section side edge, and a side and the chip pocket of second chip pocket be integrated, with convenient processing and chip removal.
Further, described second chip pocket is opened in second section side edge sidepiece towards direction of rotation when the step drill feeding, and such second chip pocket has produced the effect of " two seamed edge " on side edge, good guidance quality is arranged, can obviously improve machining accuracy, improve hole wall quality.
Step drill of the present invention has satisfied the chip removal needs of step drill roughing feed by second chip pocket is set, and has improved production efficiency, has guaranteed crudy.
Description of drawings
Fig. 1 is the structural representation of step drill of the present invention.
Fig. 2 is the A-A cutaway view among Fig. 1.
Among the figure: 1, shank; 2, blade; 3, first section; 4, second section; 5, the side edge of first section; 6, the chip pocket of first section; 7, the side edge of second section; 6, the chip pocket of second section; 9, second chip pocket.
The specific embodiment
Contrast accompanying drawing below, by description, the effect of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are described in further detail embodiment.
Embodiment 1:
As shown in Figure 1, 2, the step drill of present embodiment comprises shank 1 and blade 2, and blade 2 comprises near blade end first section 3 with near the diameter of second section, 4, the first sections 3 of the shank diameter less than second section 4; First section 3 is along himself being axially arranged with parabola shaped groove forming side edge 5 and chip pocket 6, the second sections 4 along himself being axially arranged with parabola shaped groove forming side edge 7 and chip pocket 8, and key is to offer second chip pocket 9 on the side edge 7 of second section.
During machining hole, the side edge 5 of first section at first carries out drilling to workpiece, and utilizes the chip pocket 6 of first section to carry out chip removal; When feeding along with step drill, when the side edge 7 of second section participates in drilling, just can utilize the chip pocket 8 and second chip pocket 9 of second section to carry out chip removal simultaneously, increasing of chip pocket more helps chip removal, therefore can discharge roughing feed in time, swimmingly and add the iron filings that produce man-hour, thereby can enhance productivity, guarantee crudy.
The step drill of present embodiment utilizes numerical control five-axle interlock grinding machine, independently writes knives routine and processes, and its material adopts carbide alloy.
Claims (3)
1. step drill, comprise shank and blade, described blade comprises second section near blade end first section and close shank, the diameter of described first section is less than the diameter of second section, described first section and second section be all along himself being axially arranged with parabola shaped groove to form side edge and chip pocket, it is characterized in that offering second chip pocket on the side edge of described second section.
2. step drill according to claim 1 it is characterized in that described second chip pocket is opened in the sidepiece of the second section side edge, and a side and the chip pocket of second chip pocket is integrated.
3. step drill according to claim 1 and 2 is characterized in that described second chip pocket is opened in second section side edge sidepiece towards direction of rotation when the step drill feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102148283A CN102266970A (en) | 2011-07-29 | 2011-07-29 | Step drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102148283A CN102266970A (en) | 2011-07-29 | 2011-07-29 | Step drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102266970A true CN102266970A (en) | 2011-12-07 |
Family
ID=45049536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102148283A Pending CN102266970A (en) | 2011-07-29 | 2011-07-29 | Step drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102266970A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4507028A (en) * | 1981-09-26 | 1985-03-26 | Densaburo Sakai | Combined drill and reamer |
| JP2003334709A (en) * | 2002-05-13 | 2003-11-25 | Nippon Choko Kk | Stepped drill |
| CN2850780Y (en) * | 2005-12-13 | 2006-12-27 | 长安汽车（集团）有限责任公司 | Stepwise expanding drill |
| CN101780555A (en) * | 2009-12-08 | 2010-07-21 | 苏州富莱克精密工具有限公司 | Step drill |
| CN202155573U (en) * | 2011-07-29 | 2012-03-07 | 锑玛(苏州)精密工具有限公司 | Step drill |
-
2011
- 2011-07-29 CN CN2011102148283A patent/CN102266970A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4507028A (en) * | 1981-09-26 | 1985-03-26 | Densaburo Sakai | Combined drill and reamer |
| JP2003334709A (en) * | 2002-05-13 | 2003-11-25 | Nippon Choko Kk | Stepped drill |
| CN2850780Y (en) * | 2005-12-13 | 2006-12-27 | 长安汽车（集团）有限责任公司 | Stepwise expanding drill |
| CN101780555A (en) * | 2009-12-08 | 2010-07-21 | 苏州富莱克精密工具有限公司 | Step drill |
| CN202155573U (en) * | 2011-07-29 | 2012-03-07 | 锑玛(苏州)精密工具有限公司 | Step drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111207 |