CN203184714U - Twist drill - Google Patents
Twist drill Download PDFInfo
- Publication number
- CN203184714U CN203184714U CN 201320120433 CN201320120433U CN203184714U CN 203184714 U CN203184714 U CN 203184714U CN 201320120433 CN201320120433 CN 201320120433 CN 201320120433 U CN201320120433 U CN 201320120433U CN 203184714 U CN203184714 U CN 203184714U
- Authority
- CN
- China
- Prior art keywords
- cutter head
- face
- cutting edges
- face cutting
- drill bit
- 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 machine tool processing cutter, in particular to a twist drill which comprises a cutter head and a cutter handle. A plurality of end face cutting edges are arranged on the front end face of the cutter head, spiral chip grooves are formed in the cutter head and besides the end face cutting edges, and lateral side cutting edges are arranged on the cutter head and between every two adjacent chip grooves. By means of the structure that the end face cutting edges are arranged at the top of a drill bit of the twist drill and the lateral side cutting edges are arranged on the lateral side cutter head, the lateral side cutting edges of the drill bit can cut a work piece in a drilling process of the drill bit so as to reduce drilling resistance of the drill bit, improve drilling efficiency of the drill bit and enable drilling effect of the twist drill to be better. In addition, the included angles between the end face cutting edges are favorable for improving drilling efficiency.
Description
Technical field
The utility model relates to a kind of machine tooling cutter, particularly a kind of fluted drill.
Background technology
Fluted drill is that rotary cutting by its relative fixed axis is with the instrument of the circular hole of drilling workpiece, gain the name because its chip area curl is similar to fried dough twist, fluted drill can be clamped on manual, electronic hand-held boring bar tool or drilling machine, milling machine, lathe and even the machining center and use.
Fluted drill when the side that fluted drill enters into workpiece fluted drill when creeping into can be subjected to resistance from workpiece, can influence the speed of Twist Drill and the effect of boring on workpiece during machining hole like this.
Summary of the invention
The utility model technical issues that need to address provide the fast fluted drill of bore rate.
For solving above-mentioned technical problem, fluted drill of the present utility model comprises cutter head and handle of a knife, described cutter head front end face is provided with some face cutting edges, have the helical form chip area on the other cutter head of described each face cutting edge, the cutter head between described adjacent two chip areas is provided with the side cut sword.
Totally two of described face cutting edges, about cutting end face central point center symmetry, described two formed drift angles of face cutting edge are α, described α is 130 ° ± 2 °.
Described each face cutting edge links to each other with chip area by the drilling inclined-plane.
After adopting said structure, fluted drill of the present utility model not only is provided with face cutting edge at the drill bit top, side at cutter head is provided with the side cut sword again, drill bit is in the process of creeping into like this, the side cut sword of drill bit also can cut workpiece, reduce the resistance that drill bit creeps into, so not only improved the drill bit drilling efficiency, also made the better effects if of Twist Drill.In addition, the angle of the utility model face cutting edge also is conducive to improve and creeps into speed.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model cutting end face.
Among the figure: 1 is cutter head, and 2 is handle of a knife, and 3 is face cutting edge, and 4 is chip area, and 5 are the side cut sword, and 6 are the drilling inclined-plane
The specific embodiment
Fluted drill of the present utility model comprises cutter head 1 and handle of a knife 2, and the junction of described cutter head 1 and handle of a knife 2 is connected with chamfering, is convenient to understand the drilling depth of drill bit like this.Described cutter head front end face is provided with some face cutting edges, and face cutting edge 3 is totally two here, about cutting end face central point center symmetry, could guarantee drill bit like this in creeping into the process of workpiece, the bottom surface of holing even.
In order to guarantee normal cutting, have helical form chip area 4 at described each face cutting edge 3 other cutter head, the chip under fluted drill bores from workpiece in the process of creeping into is like this understood in the automatic chip area 4 and is discharged from.In order to guarantee that workpiece can not bring too many resistance to the side of fluted drill, the cutter head between described adjacent two chip areas is provided with side cut sword 5.The face cutting edge 3 of fluted drill is in boring like this, and side cut sword 5 has reduced the frictional resistance between fluted drill side and the workpiece inwall also at rotary cutting, has improved the bore rate of fluted drill.Simultaneously, also the inwall to boring cuts, and makes that the inside in hole is more smooth, the boring better effects if.
Further, in order to make the rate of penetration of fluted drill higher, described two face cutting edges, 3 formed drift angles are α, and described α is 130 ° ± 2 °, and the angle of selecting α like this is 130 °.
Further, for better chip removal, described each face cutting edge 3 links to each other with chip area 4 by drilling inclined-plane 6, and in the process that drill bit creeps into, chip can be slipped in the chip area from drilling cuttings inclined-plane 6 by nature, makes chip removal more convenient.
Claims (3)
1. fluted drill, comprise cutter head and handle of a knife, it is characterized in that: described cutter head front end face is provided with some face cutting edges, has the helical form chip area on the other cutter head of described each face cutting edge, and the cutter head between described adjacent two chip areas is provided with the side cut sword.
2. according to the described fluted drill of claim 1, it is characterized in that: totally two of described face cutting edges, about cutting end face central point center symmetry, described two formed drift angles of face cutting edge are α, described α is 130 ° ± 2 °.
3. according to claim 1 or 2 described fluted drills, it is characterized in that: described each face cutting edge links to each other with chip area by the drilling inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120433 CN203184714U (en) | 2013-03-15 | 2013-03-15 | Twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120433 CN203184714U (en) | 2013-03-15 | 2013-03-15 | Twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203184714U true CN203184714U (en) | 2013-09-11 |
Family
ID=49101610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320120433 Expired - Fee Related CN203184714U (en) | 2013-03-15 | 2013-03-15 | Twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203184714U (en) |
-
2013
- 2013-03-15 CN CN 201320120433 patent/CN203184714U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20150315 |
|
| EXPY | Termination of patent right or utility model |