CN207057691U - A kind of Novel twist drill - Google Patents
A kind of Novel twist drill Download PDFInfo
- Publication number
- CN207057691U CN207057691U CN201720788163.XU CN201720788163U CN207057691U CN 207057691 U CN207057691 U CN 207057691U CN 201720788163 U CN201720788163 U CN 201720788163U CN 207057691 U CN207057691 U CN 207057691U
- Authority
- CN
- China
- Prior art keywords
- cutting edge
- edge
- circular nose
- chisel
- interior straight
- 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
It the utility model is related to a kind of Novel twist drill, including the drillstock and drill bit being integrally connected, drills outer circumference side is provided with the main cutting edge extended spirally around bit central axle, main cutting edge have two and between form helical flute, chisel edge protrudes to form chisel edge at center, chisel edge connects two interior straight swords in both sides respectively up and down, interior straight sword connects Circular Nose Cutting Edge, outside Circular Nose Cutting Edge connection main cutting edge, chip removal front of the slot is provided with crescent, crescent is close to chisel edge, interior straight sword, Circular Nose Cutting Edge, cutting fluid is through chip area, crescent flows directly to chisel edge, cool down chisel edge, interior straight sword, Circular Nose Cutting Edge, fast cooling, reduce resistance, protect cutter, increase service life, and the Circular Nose Cutting Edge rotated at a high speed can enter and leave the avris position rounding of workpiece in drill bit, so as to remove flash removed, processing effect is good, meet production needs.
Description
Technical field
It the utility model is related to machine tool field, and in particular to a kind of Novel twist drill.
Background technology
Fluted drill is to be relatively fixed the rotary cutting of axis by it with the instrument of the circular hole of drilling workpiece, existing fluted drill
In rotary cutting process, substantial amounts of heat is inevitably produced, temperature is too high to make fluted drill more fragile, shadow
Its service life is rung, therefore can be in processing toward cutting fluid is continuously added at circular hole, cutting fluid enters in circular hole along helicla flute to be risen
Cooling effect, and the negative rake at the unbearable place of drill bit is big, cutting fluid often simply reaches the outer circumferential side of drill bit and can not reach drill bit
End points at, fluted drill rotating speed is inadequate or workpiece is fixed when being not very steady, and cutting resistance is big, stifled bits phenomenon, damage easily occurs
Cutter, in addition, burr occurs in the avris position for entering and leaving workpiece for drill bit, existing burr removing method is to use file
It is processed, speed is slow, can not meet and uses needs.
Utility model content
For the easily stifled bits of fluted drill in the prior art, resistance is larger, burr easily occur, cutting fluid is difficult to enter etc., and technology is asked
Topic, the utility model provide a kind of Novel twist drill, and concrete technical scheme is as follows：
A kind of Novel twist drill, including the drillstock and drill bit being integrally connected, drills outer circumference side are provided with and surround bit central axle
The main cutting edge extended spirally, main cutting edge have two and between form helical flute, chisel edge protrudes to be formed at center
Chisel edge, both sides connect two interior straight swords to chisel edge respectively up and down, and interior straight sword connects Circular Nose Cutting Edge, and Circular Nose Cutting Edge is connected outside main cutting edge,
Chip removal front of the slot is provided with crescent, and crescent is close to chisel edge, interior straight sword, Circular Nose Cutting Edge.
As a kind of preferred scheme of the present utility model, transition, drillstock are realized by round platform between the drillstock and drill bit
External diameter is more than outside diameter.
As a kind of preferred scheme of the present utility model, the helical angle of the main cutting edge is 25 °.
The beneficial effects of the utility model：Cutting fluid flows directly to chisel edge through chip area, crescent, cooling chisel edge,
Interior straight sword, Circular Nose Cutting Edge, fast cooling, resistance is reduced, protect cutter, increase service life, and the Circular Nose Cutting Edge that rotates can be at a high speed
Drill bit is entering and leaving the avris position rounding of workpiece, and so as to remove flash removed, processing effect is good, meets production needs.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the zoomed-in view at A in Fig. 1；
Fig. 3 is side view of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described further：
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified position or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, it is above-mentioned that concrete condition understanding can be regarded
Concrete meaning of the term in the utility model.
As shown in Figures 1 to 3, a kind of Novel twist drill, including the drillstock 1 and drill bit 2 being integrally connected, the outer circumferential side of drill bit 2 are set
Have a main cutting edge 3 extended spirally around the central shaft of drill bit 2, main cutting edge 3 have two and between form helical flute 4, it is main
The helical angle of cutting edge 3 is 25 °, protrudes to form chisel edge 5 at the front end center of drill bit 2, chisel edge connects in two both sides respectively about 5
Straight sword 6, chisel edge 5 and two interior straight swords 6 form a triangle body, and interior straight sword 6 connects Circular Nose Cutting Edge 7, and Circular Nose Cutting Edge 7 connects main cutting edge 3
Outside, the front end of chip area 4 are provided with crescent 8, and the section of crescent 8 is triangle, and crescent 8 is deeper than chip area 4, and crescent 8 leans on
Nearly chisel edge 5, interior straight sword 6, Circular Nose Cutting Edge 7, realize transition, the external diameter of drillstock 1 is more than drill bit 2 between drillstock 1 and drill bit 2 by round platform 9
External diameter.
Operation principle：During fluted drill work of the present utility model, cutting fluid is straight through chip area water conservancy diversion to crescent, crescent
Connect and contacted with chisel edge 5, interior straight sword 6, Circular Nose Cutting Edge 7, cutting fluid quickly cools down chisel edge 5, interior straight sword 6, Circular Nose Cutting Edge 7, when chip removal, gives up
Crumble is discharged through crescent water conservancy diversion to chip area spiral, and stifled bits phenomenon will not occur, and Circular Nose Cutting Edge 7 makes the interior mistake of straight sword 6 well
The outside of connection main cutting edge 3 is crossed, reduces cutting resistance, Circular Nose Cutting Edge 7 can carry out rounding processing to the location of workpiece of process, prevent
Produce burr.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations, for the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (3)
1. a kind of Novel twist drill, including the drillstock and drill bit being integrally connected, it is characterised in that：Drills outer circumference side is provided with around brill
The main cutting edge that extends spirally of head central shaft, main cutting edge have two and between form helical flute, at chisel edge center
Protrusion forms chisel edge, and both sides connect two interior straight swords to chisel edge respectively up and down, and interior straight sword connects Circular Nose Cutting Edge, Circular Nose Cutting Edge connection main cutting
Outside sword, chip removal front of the slot is provided with crescent, and crescent is close to chisel edge, interior straight sword, Circular Nose Cutting Edge.
A kind of 2. Novel twist drill according to claim 1, it is characterised in that：Pass through round platform between the drillstock and drill bit
Transition is realized, drillstock external diameter is more than outside diameter.
A kind of 3. Novel twist drill according to claim 1, it is characterised in that：The helical angle of the main cutting edge is 25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788163.XU CN207057691U (en) | 2017-06-29 | 2017-06-29 | A kind of Novel twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788163.XU CN207057691U (en) | 2017-06-29 | 2017-06-29 | A kind of Novel twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207057691U true CN207057691U (en) | 2018-03-02 |
Family
ID=61506904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720788163.XU Expired - Fee Related CN207057691U (en) | 2017-06-29 | 2017-06-29 | A kind of Novel twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207057691U (en) |
-
2017
- 2017-06-29 CN CN201720788163.XU patent/CN207057691U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |