CN207952723U - A kind of four land thin-walled composite drill bit of two-edged - Google Patents
A kind of four land thin-walled composite drill bit of two-edged Download PDFInfo
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- CN207952723U CN207952723U CN201820063730.XU CN201820063730U CN207952723U CN 207952723 U CN207952723 U CN 207952723U CN 201820063730 U CN201820063730 U CN 201820063730U CN 207952723 U CN207952723 U CN 207952723U
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- blade tip
- drill bit
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- concave arc
- hole
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Abstract
The utility model discloses a kind of four land thin-walled composite drill bits of two-edged, including drillstock and drill bit, the apex point of the drill bit is equipped with two concave arc shape swords being centrosymmetric, described two concave arc shape cutleries have center blade tip and edge blade tip, the center blade tip is longer than edge blade tip, the cutting edge band being centrosymmetric is extended spirally at described two edge blade tips respectively backward, the bottom of described two concave arc shape swords extends spirally the burnishing-in land being centrosymmetric respectively backward.The utility model is easier to position, and the hole drilled out not will produce burr, the precision higher of hole wall, the inner wall finish higher in hole, the quality higher in hole, drilling processing production efficiency higher up and down.
Description
Technical field
The utility model is related to machining apparatus or tool, especially a kind of four land thin-walled composite drill bit of two-edged.
Background technology
The existing drill bit for drilling to aluminium thin slice or sheet member, it is past due to the structure design of its tooth form
It is not easy to position when will produce many burrs up and down toward the hole drilled out, and drilling, apex point can shake sideslip in aluminium flake, drill out
The precision of the hole wall in hole is not high, will produce more defect, quality requirement is not achieved, and generally requires to carry out secondary operation, ability
It meets the requirements, low production efficiency.Therefore, it is necessary to a kind of new drill bit of design be developed, with overcome the deficiencies in the prior art.
Invention content
For overcome the deficiencies in the prior art, it is easier to position, drills out the purpose of this utility model is to provide a kind of
Hole not will produce burr, the precision higher of hole wall, the inner wall finish higher in hole, the quality higher in hole, drilling processing life up and down
Produce more efficient four land thin-walled composite drill bit of two-edged.
Technical solution adopted by the utility model to solve its technical problems is：A kind of four land thin-walled composite drill of two-edged
Head, including drillstock and drill bit, the apex point of the drill bit are equipped with two concave arc shape swords being centrosymmetric, described two concave arc shape swords
With center blade tip and edge blade tip, the center blade tip is longer than edge blade tip, spiral shell respectively backward at described two edge blade tips
Rotation is extended with the cutting edge band being centrosymmetric, and the bottom of described two concave arc shape swords has been extended spirally respectively backward in center pair
The burnishing-in land of title.
Preferably, the angle of the angle W of the curved cut line of two concave arc shape swords at the center blade tip be 130 °-
150°。
Preferably, described two edge blade tips all have straight line sword, the angle of the included angle of straight line W1 of described two straight line swords
It is 150 ° -170 °.
The utility model has the beneficial effects that：Due to including drillstock and drill bit, it is in center pair that the apex point of the drill bit, which is equipped with,
The two concave arc shape swords claimed, described two concave arc shape cutleries have center blade tip and edge blade tip, the center blade tip to be longer than edge
Blade tip, in such manner, it is possible to quickly centering positioning and chip breaking, two concave arc shape swords can play chip breaking, end chip removal, described two
The cutting edge band being centrosymmetric is extended spirally at edge blade tip respectively backward, plays main cutting, described two concave arc shapes
The bottom of sword extends spirally the burnishing-in land being centrosymmetric respectively backward, and burnishing-in land plays burnishing-in, supporting role, it is ensured that
The precision in aperture and the finish of hole wall, so the utility model is easier to position, the hole drilled out not will produce burr, hole up and down
The precision higher of wall, the inner wall finish higher in hole, the quality higher in hole, drilling processing production efficiency higher.
Description of the drawings
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the side structure schematic view of the utility model.
Fig. 2 is the structure enlargement diagram at A in Fig. 1.
Specific implementation mode
Referring to Fig.1, Fig. 2, a kind of four land thin-walled composite drill bit of two-edged of the utility model, including drillstock 1 and drill bit 2, institute
The apex point for stating drill bit is equipped with two concave arc shape swords 3 being centrosymmetric, and described two concave arc shape cutleries have center blade tip 4 and edge
Blade tip 5, the center blade tip are longer than edge blade tip, and two concave arc shape swords can quickly feel relieved positioning and chip breaking, two concave arc shapes
Sword can play chip breaking, end chip removal, extend spirally cutting of being centrosymmetric at described two edge blade tips respectively backward
Land 6 is cut, main cutting is played, the bottom of described two concave arc shape swords extends spirally the burnishing-in being centrosymmetric respectively backward
Land 7, burnishing-in land play burnishing-in, supporting role, ensure aperture and hole wall finish, so the utility model is easier to position,
The hole drilled out not will produce burr up and down, the precision higher of hole wall, the inner wall finish higher in hole, and the quality higher in hole is not required to
Carry out secondary operation, drilling processing production efficiency higher.
Preferred scheme, the angle of the angle W of the curved cut line of two concave arc shape swords at the center blade tip is 130 °-
150 °, this angle can achieve the effect that quickly feel relieved positioning and chip breaking, and the angle of preferred W is 140 °.Described two edges
Blade tip all has straight line sword 8, and the angle of the included angle of straight line W1 of described two straight line swords is 150 ° -170 °, on which can guarantee
Lower aperture impulse- free robustness, aperture precision is high, and hole wall is highly polished, and the angle of preferred W1 is 160 °, can reach preferably drilling and adds
Working medium amount.
Hole class processing of the utility model for thin wall aluminium part, there is accurate positioning of quickly feeling relieved, part to be not easy
The advantages that deformation, the equal impulse- free robustness of hole import and export processed, the inner wall in hole is highly polished, and the dimensional accuracy in the hole processed is high,
Aperture processes one-time-reach-place, is not necessarily to secondary operation, production efficiency higher.
In addition, the utility model is not limited to the above embodiment, as long as it reaches this reality with essentially identical means
With novel technique effect, it should all belong to the scope of protection of the utility model.
Claims (3)
1. a kind of four land thin-walled composite drill bit of two-edged, it is characterised in that：Including drillstock (1) and drill bit (2), the brill of the drill bit
Point is equipped with two concave arc shape swords (3) being centrosymmetric, and described two concave arc shape cutleries have center blade tip (4) and edge blade tip
(5), the center blade tip is longer than edge blade tip, extends spirally and is centrosymmetric respectively backward at described two edge blade tips
Cutting edge band (6), the bottom of described two concave arc shape swords extend spirally the burnishing-in land (7) being centrosymmetric respectively backward.
2. four land thin-walled composite drill bit of two-edged according to claim 1, it is characterised in that：Two at the center blade tip
The angle of the angle W of the curved cut line of a concave arc shape sword is 130 ° -150 °.
3. four land thin-walled composite drill bit of two-edged according to claim 1, it is characterised in that：Described two edge blade tips are equal
With straight line sword (8), the angle of the included angle of straight line W1 of described two straight line swords is 150 ° -170 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820063730.XU CN207952723U (en) | 2018-01-12 | 2018-01-12 | A kind of four land thin-walled composite drill bit of two-edged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820063730.XU CN207952723U (en) | 2018-01-12 | 2018-01-12 | A kind of four land thin-walled composite drill bit of two-edged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207952723U true CN207952723U (en) | 2018-10-12 |
Family
ID=63733296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820063730.XU Active CN207952723U (en) | 2018-01-12 | 2018-01-12 | A kind of four land thin-walled composite drill bit of two-edged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207952723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328713A (en) * | 2019-07-31 | 2019-10-15 | 上海建桥学院 | A kind of mechanical arm system and method for processing low profile flexible material |
-
2018
- 2018-01-12 CN CN201820063730.XU patent/CN207952723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328713A (en) * | 2019-07-31 | 2019-10-15 | 上海建桥学院 | A kind of mechanical arm system and method for processing low profile flexible material |
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