CN2593990Y - Straight spiral drill - Google Patents
Straight spiral drill Download PDFInfo
- Publication number
- CN2593990Y CN2593990Y CN 02288296 CN02288296U CN2593990Y CN 2593990 Y CN2593990 Y CN 2593990Y CN 02288296 CN02288296 CN 02288296 CN 02288296 U CN02288296 U CN 02288296U CN 2593990 Y CN2593990 Y CN 2593990Y
- Authority
- CN
- China
- Prior art keywords
- cutting edge
- front cutting
- straight spiral
- drill
- auger
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a straight auger, which comprises an auger body, a spiral groove, a main cutting edge, a front cutting edge, a conical auger tip and an auger shank. The utility model is characterized in that the back of the main cutting edge is provided with the front cutting edge; the main cutting edge and the front cutting edge are adjacently connected together; the front cutting edge radially protrudes out of the surface of the auger body; the cross-section of the spiral groove is circular arc-shaped. The utility model has the advantages that the cutting edges have high intensity, the straight auger is not easily ruptured, the surface of the spiral groove is smooth, and scraps are removed expeditely.
Description
Technical field:
The utility model relates to a kind of Straight spiral drill, can be used for belonging to non-metal material hole machining tool technical field in the nonmetallic materials borings such as timber, plastics.
Background technology:
Carpenter's Straight spiral drill of at present common usefulness, as shown in Figure 2, the drill body front end face has a main cutting edge and a front cutting edge that exceeds main cutting edge, and two cutting edges are separated from each other, and there is a conical screw shape apex point at the front end face center, a helicla flute is arranged on the drill body, the spiral fluted shape of cross section is square, and there is drillstock the drill body back, because main, front cutting edge separates, edge strength is lower, when boring, when running into harder knot, front cutting edge fractures easily, in addition, helicla flute on the drill body is square, because process tool, the helicla flute surface ratio is more coarse, not smooth in the chip removal of when boring, stop up easily.
Summary of the invention:
The purpose of this utility model is invented a kind of edge strength height exactly, easy fracture not, helicla flute smooth surface, the Straight spiral drill that chip removal is unimpeded.
For realizing above purpose, the technical solution of the utility model provides a kind of Straight spiral drill, it comprises the Straight spiral drill that drill body, helicla flute, main cutting edge, front cutting edge, conical screw apex point, drillstock are formed, its characteristics are, the main cutting edge back is equipped with front cutting edge, main cutting edge and front cutting edge are adjacent to link together, and front cutting edge radially protrudes from the drill body surface, and the helicla flute cross section is the garden arc.
Behind main cutting edge contact machined material, begin cutting and remove machined material, front cutting edge plays hole wall smoothing effect, links together because major and minor cutting edge is adjacent, and the effect of mutual support reinforcing is arranged, so the edge strength height, is difficult for the tipping fracture; Front cutting edge radially protrudes from the drill body surface, the diameter of being holed is bigger than drill body diameter, the friction of drill body and hole wall is little, and drill bit is difficult for heating, in addition because processing spiral fluted milling cutter is a protruding garden arc, no wedge angle, the helicla flute cross section that processes is the garden arc, and the surface is very smooth, and cutting chip removal, to go out resistance little, chip removal is unimpeded, does not produce clogging.
The utility model has the advantages that the edge strength height, easy fracture not, the helicla flute smooth surface, chip removal is unimpeded.
Description of drawings:
Fig. 1 is the Straight spiral drill structural representation;
Fig. 2 is a Straight spiral drill structure A-A schematic diagram;
Fig. 3 is a Straight spiral drill structure B-B schematic diagram;
Fig. 4 is former Straight spiral drill structural representation.
The specific embodiment:
As Fig. 1, Fig. 2, shown in Figure 3, be the Straight spiral drill structural representation, it is made up of drill body 1, helicla flute 2, main cutting edge 3, front cutting edge 4, conical screw apex point 5, drillstock 6.
The processing Straight spiral drill makes drill body 1 be Cylinder; Helicla flute 2 cross sections are the garden arc; The front end processing main cutting edge 3 of helicla flute 2, main cutting edge 3 back are equipped with front cutting edge 4, main cutting edge 3 and front cutting edge 4 adjacent linking together, front cutting edge 4 radially protrudes from the drill body surface; Conical screw shape apex point 5 that protrudes forward of drill body 1 front end face center processing; The clamping position cross section of drillstock 6 is regular hexagon.
During work, drillstock 6 is clamped in the drill chuck of drilling machine or jackhammer, drill bit and drilling machine or jackhammer are linked up, and transferring power, conical screw apex point 5 is aimed at by the boring center, axial compressive force a little, conical screw apex point 5 just is screwed into machined material, and conical screw apex point 5 has two effects at this moment, and the one, play the centralized positioning effect, the 2nd, conical screw apex point 5 produces a pulling force forward after being screwed into machined material, drill bit is pulled to machined material, make drill bit energy autofeed, behind main cutting edge contact machined material, begin cutting and remove machined material, front cutting edge plays hole wall smoothing effect, and the smear metal of cutting is outside helicla flute 2 taps, carry out so continuously, form a circular hole.
Claims (4)
1. Straight spiral drill of forming by drill body (1), helicla flute (2), main cutting edge (3), front cutting edge (4), conical screw apex point (5), drillstock (6), it is characterized in that, main cutting edge (3) back is equipped with front cutting edge (4), main cutting edge (3) and adjacent the linking together of front cutting edge (4), front cutting edge (4) radially protrudes from the drill body surface.
2. Straight spiral drill according to claim 1 is characterized in that, described drill body (1) is a Cylinder.
3. Straight spiral drill according to claim 1 is characterized in that, described helicla flute (2) cross section is the garden arc.
4. Straight spiral drill according to claim 1 is characterized in that, the clamping position cross section of described drillstock (6) is regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288296 CN2593990Y (en) | 2002-12-13 | 2002-12-13 | Straight spiral drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288296 CN2593990Y (en) | 2002-12-13 | 2002-12-13 | Straight spiral drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2593990Y true CN2593990Y (en) | 2003-12-24 |
Family
ID=33748234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02288296 Expired - Fee Related CN2593990Y (en) | 2002-12-13 | 2002-12-13 | Straight spiral drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2593990Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821068B (en) * | 2007-11-06 | 2013-05-29 | 罗伯特·博世有限公司 | Auger bit including reamer and manufacture method thereof |
-
2002
- 2002-12-13 CN CN 02288296 patent/CN2593990Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821068B (en) * | 2007-11-06 | 2013-05-29 | 罗伯特·博世有限公司 | Auger bit including reamer and manufacture method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |