CN201913286U - Drill bit for processing semicircle orifice - Google Patents
Drill bit for processing semicircle orifice Download PDFInfo
- Publication number
- CN201913286U CN201913286U CN2010206490800U CN201020649080U CN201913286U CN 201913286 U CN201913286 U CN 201913286U CN 2010206490800 U CN2010206490800 U CN 2010206490800U CN 201020649080 U CN201020649080 U CN 201020649080U CN 201913286 U CN201913286 U CN 201913286U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- lacks
- edge
- cutting
- processing
- 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
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Images
Landscapes
- Drilling Tools (AREA)
Abstract
A drill bit for processing a semicircle orifice comprises a drillstock and the drill bit, wherein the cutting part of the drill bit adopts a circular arc-shaped cutting edges; an edge point is formed at one end of each circular arc-shaped cutting edge; and a drill core point on the chisel edge of the drill bit is lower than the edge point. The semicircle orifice processed by the drill bit conforms to processing requirements, the cutting performance of the drill bit is greatly improved after the cutting edges are sharpened, the durability of a cutter is enhanced, the surface texture of a workpiece is improved, and the manufacturing cost is reduced.
Description
Technical field
The utility model relates to a kind of machine tool drill bit, specifically is meant a kind of drill bit that lacks the material hole of processing.
Background technology
Scarce material hole in the machined is that the limit of finger-hole is imperfect, lacks material, is called semicircle orifice traditionally.Drilling adds man-hour, if adopt general drill bit to carry out drilling, drill bit two outsides cause the cutting force imbalance because of workpiece lacks material, and force the drill bit deflection to lack one side of material, can produce serious skewness, even can't drilling process, destroyed the precision in hole and made the wearing and tearing of drill bit side edge, the service life of reducing drill bit.If the top in hole is full circle, the bottom is a semicircle, then in this case, tends to a full circle hole, top and spreads to elliptical aperture, influences the machining hole quality.
Summary of the invention
The purpose of this utility model provides a kind of drill bit that lacks the material hole of processing, and solves to lack the low technical problem of crudy, cutter life that material boring is difficult to guarantee product in the prior art, improves working (machining) efficiency.
In order to address the above problem, the purpose of this utility model is achieved in that a kind of drill bit that lacks the material hole of processing, and comprises drillstock and drill bit, and the cutting portion of drill bit is the circular arc cutting edge, and an end of cutting edge is provided with blade tip; The aspect ratio blade tip of the unbearable point on the chisel edge is low.
The cutting portion inner edge sharp angle Φ of drill bit is 100 °.
The cutting portion outside sharp angle α of drill bit is 120 °～140 °.
The arc chord angle β of cutting edge is 130 °～150 °.
The chisel edge width of drill bit is 1 mm～2 mm.
The point of contact, circular arc bottom of cutting edge is 3 mm to the height b of blade tip.
Blade tip is 2 mm to the height a of unbearable point.
A kind of drill bit that lacks the material hole of processing of the utility model, the scarce material hole that is processed meets processing request, the drill bit behind sharpening, its cutting ability is greatly improved, increased the durability of cutter greatly, workpiece surface quality is improved, and has reduced production cost.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a bit cutting of the present utility model portion structural representation.
The specific embodiment
A kind of drill bit that lacks the material hole of processing comprises drillstock 1 and drill bit 2, and the cutting portion of drill bit 2 is a circular arc cutting edge 3, and an end of cutting edge 3 is provided with blade tip 4; The aspect ratio blade tip 4 of unbearable sharp 5 on drill bit 2 chisel edges is low.
The cutting portion inner edge sharp angle Φ of drill bit 2 is 100 °.
The cutting portion outside sharp angle α of drill bit 2 is 120 °～140 °.
The arc chord angle β of cutting edge 3 is 130 °～150 °.
The chisel edge width of drill bit 2 is 1 mm～2 mm.
The point of contact, circular arc bottom of cutting edge 3 is 3 mm to the height b of blade tip 4.
A kind of drill bit that lacks the material hole of processing of the utility model is the special drill bit 2 that is formed by standard spiral bit sharpening, comprises drillstock 1 and drill bit 2, as shown in Figure 1.
The both sides blade tip 4 of drill bit 2 is highly equal and symmetrical behind the sharpening, and unbearable point 5 is than outside blade tip 4 low 2mm, circular arc type cutting edge 3 in grinding between the two; The point of contact, circular arc bottom of arc edge 3 is than low 3 mm of height of outside blade tip 4, as shown in Figure 2.
During work, the inner edge of cutting edge 3 location, the cutting of two outsides, cutting surface forms convex tendon when making boring, has limited the skew of drill bit, thereby can carry out monolateral drilling.A kind of processing of the utility model lacks the hole processing that the drill bit of expecting the hole is applicable to the part under the situation that surpasses half hole and be no more than half hole.
Claims (7)
1. a processing lacks the drill bit of expecting the hole, comprises drillstock (1) and drill bit (2), and it is characterized in that: the cutting portion of drill bit (2) is circular arc cutting edge (3), and an end of cutting edge (3) is provided with blade tip (4); The aspect ratio blade tip (4) of the unbearable point (5) on drill bit (2) chisel edge is low.
2. a kind of drill bit that lacks the material hole of processing according to claim 1, it is characterized in that: the cutting portion inner edge sharp angle Φ of drill bit (2) is 100 °.
3. a kind of drill bit that lacks the material hole of processing according to claim 1, it is characterized in that: the cutting portion outside sharp angle α of drill bit (2) is 120 °～140 °.
4. a kind of drill bit that lacks the material hole of processing according to claim 1, it is characterized in that: the arc chord angle β of cutting edge (3) is 130 °～150 °.
5. a kind of drill bit that lacks the material hole of processing according to claim 1, it is characterized in that: the chisel edge width of drill bit (2) is 1 mm～2 mm.
6. a kind of drill bit that lacks the material hole of processing according to claim 1, it is characterized in that: the point of contact, circular arc bottom of drill bit (2) cutting edge (3) is 3 mm to the height b of blade tip (4).
7. a kind of drill bit that lacks the material hole of processing according to claim 1, it is characterized in that: blade tip (4) is 2 mm to the height a of unbearable point (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206490800U CN201913286U (en) | 2010-12-09 | 2010-12-09 | Drill bit for processing semicircle orifice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206490800U CN201913286U (en) | 2010-12-09 | 2010-12-09 | Drill bit for processing semicircle orifice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201913286U true CN201913286U (en) | 2011-08-03 |
Family
ID=44413102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206490800U Expired - Fee Related CN201913286U (en) | 2010-12-09 | 2010-12-09 | Drill bit for processing semicircle orifice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201913286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150137A (en) * | 2017-05-12 | 2017-09-12 | 湖北旭扬工贸有限公司 | A kind of fluted drill for processing inclined |
-
2010
- 2010-12-09 CN CN2010206490800U patent/CN201913286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150137A (en) * | 2017-05-12 | 2017-09-12 | 湖北旭扬工贸有限公司 | A kind of fluted drill for processing inclined |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202010808U (en) | Cubic boron nitride (CBN)/polycrystalline diamond (PCD) deep-cavity end-cutting end milling cutter | |
| CN201862823U (en) | Drill for processing sheets | |
| CN201079853Y (en) | Hard alloy countersink drill | |
| CN201913286U (en) | Drill bit for processing semicircle orifice | |
| CN102554323A (en) | Straight fluted drill | |
| CN202539600U (en) | Oblique groove forming tool | |
| CN201889548U (en) | Diamond reamer for processing pneumatic valve | |
| CN104227093A (en) | Drill point centering countersinking cutter | |
| CN201120491Y (en) | Single end blade chip flute R butt mill | |
| CN202411453U (en) | Polycrystalline diamond welding arc edge transition forming knife | |
| CN201988785U (en) | Spiral copy cutter | |
| CN104174902A (en) | High-precision inner-cooling stepped drill | |
| CN204159944U (en) | Apex point centering countersink | |
| CN205020957U (en) | Rose reamer | |
| CN202155572U (en) | Powerful drill bit | |
| CN103042256A (en) | Small diameter stepped drill | |
| CN209110249U (en) | Hard alloy forms gouge bit | |
| CN203765095U (en) | PCD reamer | |
| CN201889551U (en) | Diamond reamer with Hohl Schaft Kegel (HSK) tool holder clamping mode | |
| CN202155573U (en) | Step drill | |
| CN203197333U (en) | Polycrystalline cubic boron nitride blade for machining thrust bearing surface on vortex disc | |
| CN203679377U (en) | Profile cutter used for machining sides and chamfers | |
| CN202479565U (en) | Chamfering drill | |
| CN202155576U (en) | Drill head | |
| CN204094213U (en) | A kind of continuous cutting T-shaped cutter |
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: 20110803 Termination date: 20131209 |