CN207578607U - A kind of three-tip woodworking drill - Google Patents
A kind of three-tip woodworking drill Download PDFInfo
- Publication number
- CN207578607U CN207578607U CN201721748226.5U CN201721748226U CN207578607U CN 207578607 U CN207578607 U CN 207578607U CN 201721748226 U CN201721748226 U CN 201721748226U CN 207578607 U CN207578607 U CN 207578607U
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- drill bit
- tip
- drill
- woodworking
- cutting edges
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Abstract
The utility model discloses a kind of three-tip woodworking drills, including drill bit and drillstock, drill bit periphery is equipped with two spiral cutting edges, two cutting edges are symmetrical arranged about axle center, land outwardly protruding, sharply setting is provided on cutting edge one side edge rib, the opposite side of cutting edge is arcuate structure, is seamlessly transitted between two cutting edges.Rigidity is strong, chip removal is smooth, centering is stable and not easy to wear, extends the service life of drill bit for it, effectively eliminates the burr of through-hole outlet.
Description
Technical field
The utility model is related to a kind of wood working tool, more particularly, to a kind of three-tip woodworking drill.
Background technology
In carpenter's material processing field, three-tip woodworking drill is a kind of mutation of fluted drill, in punching, in three-tip woodworking drill
Between apex point hammer into wood as an awl, it is ensured that drill bit will not slide.Three-tip woodworking drill can be used as connecting hand-held, electric bench drill
Or the rotary-cut cutlery of electric hammer drill.Existing three-tip woodworking drill is connected by drill bit with rod-shaped drillstock, and the bit body of drill bit is one
Spiral shape blade, there are three tips for the end of drill bit, and the retaining part of drillstock is cylindrical staight shank, and drillstock is inserted into electric drill or electricity
In the centre bore of hammer drill fixture.
But since carpenter's auger cutting output is big, feed speed is fast, solid capacity is big, and existing three-tip woodworking drill is in drilling, often
Occurring that centering is unstable, chip removal is not smooth, poor rigidity, axial drag are big etc. influences the situation of service life and through-hole outlet is also easy to produce hair
Thorn.
Invention content
The technical problem to be solved by the utility model is to provide a kind of three-tip woodworking drills, and rigidity is strong, chip removal is smooth, fixed
The heart is stable and not easy to wear, extends the service life of drill bit, effectively eliminates the burr of through-hole outlet.
Technical solution is used by the utility model solves above-mentioned technical problem：A kind of three-tip woodworking drill, including drill bit
With drillstock, the drill bit periphery is equipped with two spiral cutting edges, and two cutting edges are symmetrical arranged about axle center, cut
It cuts and land outwardly protruding, sharply setting is provided on sword one side edge rib, the opposite side of the cutting edge is arc knot
Structure is seamlessly transitted between two cutting edges.
The further preferred embodiment of the utility model：The drill bit uses high-speed tool Steel material.
The further preferred embodiment of the utility model：Chip space, the chip removal are set between two cutting edges
Slot uses arc line shaped trench structure.
The further preferred embodiment of the utility model：There are three sharp swords for the end set of the drill bit.
The further preferred embodiment of the utility model：The drill bit grinds machine-shaping using grinding wheel.
Compared with prior art, the utility model has the advantage of drill bit peripheries to be equipped with two spiral cuttings
Sword, two cutting edges are symmetrical arranged about axle center, provide stable centering ability, make drill bit have longer service life and compared with
High hole precision.Land outwardly protruding, sharply setting is provided on cutting edge one side edge rib, drilling is brisk.Cutting edge
Opposite side for arcuate structure, seamlessly transitted between two cutting edges.Structure setting so that the rigidity of drill bit is strong, and chip removal is smooth,
Extend the service life of drill bit.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the sectional view in AA sections in Fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
As shown in Figure 1 to Figure 2：A kind of three-tip woodworking drill, including drill bit 1 and drillstock 2,1 periphery of drill bit is equipped with two
Spiral cutting edge 3, two cutting edges 3 are symmetrical arranged about axle center, are provided with and are outwardly protruded on 3 one side edge rib of cutting edge
, the land 4 sharply set, the opposite side of cutting edge 3 is arcuate structure, is seamlessly transitted between two cutting edges 3.
Drill bit 1 uses high-speed tool Steel material.In 1 material selection of drill bit, select hardness high, toughness and heat-resist height
Fast tool steel material, its hardness is 63~66HRC after thermally treated quenching, and red hardness is good, can also keep boring at high operating temperatures
First 1 hardness improves the performance of drill bit 1, improves the structural strength of the utility model.
Chip space 5 is set between two cutting edges 3, and chip space 5 uses arc line shaped trench structure.In 1 structural parameters of drill bit
Design on, design meets rigidity and chip removal smoothly requires, and makes that drilling is brisk, chip removal is smooth.
There are three sharp swords 6 for the end set of drill bit 1.The 6 mouthfuls of designs of tricuspid sword reduce cutting axial force, provide stable centering
Ability, apex point both sides cutting edge of a knife or a sword mouth effectively eliminate the burr of through-hole outlet.
Drill bit 1 grinds machine-shaping using grinding wheel.It is narrower than existing three-tip woodworking drill that the utility model takes forming grinding wheel to grind
Land and big helical angle.
After the utility model uses the above embodiment, in drilling, 1 service life of drill bit is carried than existing three-tip woodworking drill
It is 4~5 times high, and go out and consider smooth, long lifespan to be worth doing.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of three-tip woodworking drill, including drill bit and drillstock, it is characterised in that the drill bit periphery is equipped with two spirals
The cutting edge of shape, two cutting edges are symmetrical arranged about axle center, are provided on cutting edge one side edge rib outwardly protruding, sharp
The land of setting, the opposite side of the cutting edge is arcuate structure, is seamlessly transitted between two cutting edges.
2. a kind of three-tip woodworking drill according to claim 1, it is characterised in that the drill bit uses high-speed tool steel
Material.
A kind of 3. three-tip woodworking drill according to claim 1, it is characterised in that the row of setting between two cutting edges
Consider slot to be worth doing, the chip space uses arc line shaped trench structure.
4. a kind of three-tip woodworking drill according to claim 1, it is characterised in that there are three the end sets of the drill bit
Sharp sword.
5. a kind of three-tip woodworking drill according to claim 1, it is characterised in that the drill bit is processed into using grinding wheel mill
Type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721748226.5U CN207578607U (en) | 2017-12-14 | 2017-12-14 | A kind of three-tip woodworking drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721748226.5U CN207578607U (en) | 2017-12-14 | 2017-12-14 | A kind of three-tip woodworking drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207578607U true CN207578607U (en) | 2018-07-06 |
Family
ID=62738085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721748226.5U Active CN207578607U (en) | 2017-12-14 | 2017-12-14 | A kind of three-tip woodworking drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207578607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328388A (en) * | 2019-07-31 | 2019-10-15 | 上海建桥学院 | It is a kind of for processing the drill bit of low profile flexible material |
| CN110774390A (en) * | 2019-11-06 | 2020-02-11 | 湖北鑫运祥科技发展有限公司 | Inserted sheet type alloy drill bit and processing method |
-
2017
- 2017-12-14 CN CN201721748226.5U patent/CN207578607U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328388A (en) * | 2019-07-31 | 2019-10-15 | 上海建桥学院 | It is a kind of for processing the drill bit of low profile flexible material |
| CN110774390A (en) * | 2019-11-06 | 2020-02-11 | 湖北鑫运祥科技发展有限公司 | Inserted sheet type alloy drill bit and processing method |
| CN110774390B (en) * | 2019-11-06 | 2023-09-29 | 湖北鑫运祥科技发展有限公司 | Insert alloy drill bit and processing method |
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