CN202845866U - Drill - Google Patents
Drill Download PDFInfo
- Publication number
- CN202845866U CN202845866U CN 201220488492 CN201220488492U CN202845866U CN 202845866 U CN202845866 U CN 202845866U CN 201220488492 CN201220488492 CN 201220488492 CN 201220488492 U CN201220488492 U CN 201220488492U CN 202845866 U CN202845866 U CN 202845866U
- Authority
- CN
- China
- Prior art keywords
- drill
- neck
- cutter
- apex point
- handle
- 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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- Drilling Tools (AREA)
Abstract
The utility model belongs to the field of cutting tools and particularly provides a drill. The drill comprises a drill handle, a drill neck and a drill tip, two ends of the drill neck are respectively and integrally connected with the drill handle and the drill tip, the diameter of the drill handle is larger than that of the drill neck, a chip discharging groove is formed in the drill neck, cutting blades are arranged on the drill tip, the cutting blades are two arc-shaped blades which are symmetrically arranged. The drill has the advantages of being accurate in centering of the drill tip, small in jumping and good in stability of drilling a hole.
Description
Technical field
The utility model belongs to the cutting tool field, specifically a kind of drill bit.
Background technology
The structure of various cutters all is comprised of clamping part and working portion.Clamping part and the working portion of overall structure cutter all are made on the cutter hub; The working portion of inserted structure cutter (cutter tooth or blade) then is installed on the cutter hub.The clamping of cutter partly has with holes and band handle two classes.Rely on inner hole sleeve to be contained on the main shaft or axle of lathe with spot facing cutter, transmit torsional moment by axial bond or straight end-face key, such as cylindrical milling cutter, facing-type cutter etc.With the cutter of handle three kinds of rectangular shank, cylindrical handle and circular cone handles are arranged usually.Lathe tool, planing tool etc. are generally rectangular shank; The circular cone handle leans on the tapering bearing axial pushing force, and by the frictional force transmitting torque; Cylindrical handle generally is applicable to the cutters such as less fluted drill, slotting cutter, and the frictional force that produces when clamping during cutting is transmitted torsional moment.Much make with low-alloy steel with the shank of the cutter of handle, working portion then forms two parts butt welding with high-speed steel.The working portion of cutter is exactly the part that produces and process smear metal, comprises blade, makes smear metal structure, chip removal or appearance disconnected broken or that wind up store up the space of smear metal, the structural elements such as passage of cutting fluid.The working portion of the cutter that has is exactly cutting tip, such as lathe tool, planing tool, boring cutter and milling cutter etc.; The working portion of the cutter that has then comprises cutting tip and calibrated section, such as drill bit, reamer, reamer, inner surface broaching tool and screw tap etc.The effect of cutting tip is to excise smear metal with blade, and the effect of calibrated section is finished surface and the guiding cutter that smoothing has been cut.
Summary of the invention
The purpose of this utility model provides the drill bit of a kind of processing metal sheet material or handicraft boring.
The utility model provides following technical scheme:
Drill bit, it comprises drillstock, drill neck and apex point, and drill neck two ends respectively one connect drillstock and apex point, and the diameter of drillstock is provided with chip area greater than the diameter of drill neck on the drill neck, and apex point is provided with cutting edge, and described cutting edge is symmetrically arranged two Circular Nose Cutting Edges.
The angle of described apex point is 140 °.
The utility model has the advantages that drill bit centering accurately, it is little to beat, and borehole stability is good.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the side view of Fig. 1.
The specific embodiment
As shown in Figure 1 and Figure 2, drill bit, it comprises drillstock 1, drill neck 2 and apex point 3, drill neck 2 two ends respectively one connect drillstock 1 and apex point 3, the diameter of drillstock 1 is greater than the diameter of drill neck 2, be provided with chip area on the drill neck 2, apex point 3 is provided with cutting edge, and described cutting edge is symmetrically arranged two Circular Nose Cutting Edges 4.
The angle of described apex point is 140 °.
Claims (2)
1. drill bit, it comprises drillstock, drill neck and apex point, and drill neck two ends respectively one connect drillstock and apex point, and the diameter of drillstock is provided with chip area greater than the diameter of drill neck on the drill neck, and apex point is provided with cutting edge, and described cutting edge is symmetrically arranged two Circular Nose Cutting Edges.
2. drill bit according to claim 1, it is characterized in that: the angle of described apex point is 140 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488492 CN202845866U (en) | 2012-09-23 | 2012-09-23 | Drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488492 CN202845866U (en) | 2012-09-23 | 2012-09-23 | Drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202845866U true CN202845866U (en) | 2013-04-03 |
Family
ID=47977102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220488492 Expired - Fee Related CN202845866U (en) | 2012-09-23 | 2012-09-23 | Drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202845866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190999A (en) * | 2014-08-01 | 2014-12-10 | 常州西利合金工具有限公司 | Reaming cutter |
-
2012
- 2012-09-23 CN CN 201220488492 patent/CN202845866U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190999A (en) * | 2014-08-01 | 2014-12-10 | 常州西利合金工具有限公司 | Reaming cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130923 |