CN216421177U - Deep hole straight flute drill bit - Google Patents
Deep hole straight flute drill bit Download PDFInfo
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- CN216421177U CN216421177U CN202122876361.0U CN202122876361U CN216421177U CN 216421177 U CN216421177 U CN 216421177U CN 202122876361 U CN202122876361 U CN 202122876361U CN 216421177 U CN216421177 U CN 216421177U
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Abstract
The utility model relates to a machine tooling cutter technical field especially relates to a deep hole straight flute drill bit, include: drillstock portion and drill bit portion, drillstock portion dress clamp in the lathe main shaft, and drill bit portion includes: the centering section is positioned at one end of the drill bit part, which is far away from the drill shank part, and is used for centering the drill bit part before drilling; the cutting section is positioned at one end of the centering section, which is close to the drill handle part, and is used for cutting during drilling; the chip grooves are positioned at one end, close to the drill shank, of the cutting section and used for discharging chips cut by the cutting section, and the length extending directions of the chip grooves are parallel to the length extending direction of the drill shank. The utility model discloses in, through setting up drillstock portion and drill bit portion, wherein drill bit portion includes centering section, cutting section and a plurality of chip groove, before driling, uses the centering section to extrude a dent on the article of treating processing earlier for drill bit portion can guarantee that its rotation axis can not take place the skew when beginning drilling, thereby when carrying out deep hole drilling, can guarantee the processingquality of deep hole.
Description
Technical Field
The utility model relates to a machine tooling cutter technical field especially relates to a deep hole straight flute drill bit.
Background
The drill bit is a tool for drilling through holes or blind holes in solid materials and reaming existing holes, and commonly used drill bits mainly include twist drills, flat drills, center drills, deep hole drills and trepanning drills. At present, in the machining process of a deep hole drill in the machining process, after a machine tool spindle enables the center of a drill bit to be aligned with a center, the rotary spindle drives the drill bit to rotate, cut and axially feed, and finally, a machining task is finished.
However, in the actual operation process, when the drill bit is axially fed under the eccentric condition, the cutting amount on one side is large, the cutting amount on the other side is small, the condition of asymmetrical machining size often occurs, and in the deep hole machining process, the error of a bit of the drill bit is continuously amplified in the deep hole machining process.
In view of the above problems, the present designer is based on the practical experience and professional knowledge of the engineering application of such products for many years, and is engaged with the application of the theory to actively make research and innovation, so as to create a deep-hole straight-flute drill bit, which is more practical.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a deep hole straight flute drill bit to effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a deep-hole straight flute drill bit comprising:
the drilling rod portion and drill bit portion, the drilling rod portion dress clamp is in the lathe main shaft, drill bit portion includes:
a centering section at an end of the bit portion remote from the bit portion for centering the bit portion prior to drilling;
a cutting section, which is positioned at one end of the centering section close to the drill shank part and cuts when drilling;
a plurality of chip grooves, it is a plurality of the chip groove is located the cutting section is close to the one end of drillstock portion supplies the piece of cutting section is discharged, and is a plurality of chip groove length extending direction is on a parallel with drillstock portion length extending direction.
Furthermore, the number of the centering sections and the number of the cutting sections are two, and the two centering sections and the two cutting sections are respectively arranged in a rotational symmetry manner.
Furthermore, each centering section comprises two centering ends, and a first included angle is formed between the two centering ends;
each cutting section comprises two cutting ends, and a second included angle is formed between the two cutting ends;
wherein the first included angle is greater than the second included angle.
Further, the second included angle is 90 °.
Further, the first included angle is 90-120 degrees.
Further, one end, close to the cutting section, of the centering section is a first arc end, and an opening of the first arc end faces to one end far away from the cutting section.
Further, the cutting section is being close to the one end of chip groove is the second circular arc end, second circular arc end opening orientation is close to the one end of chip groove.
Furthermore, the number of the chip grooves is four, two chip grooves correspond to the two cutting sections, and the other two chip grooves are respectively located between the two cutting sections.
Furthermore, one end of each chip groove, which is positioned between the two cutting sections and is far away from the cutting sections, is of an arc structure.
The beneficial effects of the utility model are that: the utility model discloses a set up drillstock portion and drill bit portion, wherein drill bit portion is including centering section, cutting section and a plurality of chip groove, before driling, uses the centering section to extrude a dent on the article of treating processing earlier for drill bit portion can guarantee that its rotation axis can not take place the skew when beginning to bore, thereby when carrying out deep hole drilling, can guarantee the processingquality of deep hole.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the centering segment;
FIG. 3 is a front view of the cutting segment;
fig. 4 is a side view of the present invention.
Reference numerals: 1. a shank portion; 2. drilling a head part; 21. a centering section; 211. a centering end; 212. a first arc end; 22. a cutting section; 221. a cutting end; 222. a second arc end; 23. a chip groove; 231. and (4) a circular arc structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4: a deep-hole straight flute drill bit comprising:
a centering section 21, the centering section 21 being located at an end of the drill head portion 2 remote from the drill shank portion 1, for centering the drill head portion 2 prior to drilling;
a cutting section 22, wherein the cutting section 22 is positioned at one end of the centering section 21 close to the drill shank part 1 and is used for cutting during drilling;
the chip grooves 23 are formed in one end, close to the drill shank portion 1, of the cutting section 22, and the chips cut by the cutting section 22 are discharged, and the length extending direction of the chip grooves 23 is parallel to the length extending direction of the drill shank portion 1.
Through setting up drillstock portion 1 and drill bit portion 2, wherein drillstock portion 2 includes centering section 21, cutting section 22 and a plurality of chip groove 23, before carrying out the drilling, uses centering section 21 to extrude a dent on the article of treating processing earlier for drillstock portion 2 can guarantee that its rotation axis can not take place the skew when beginning drilling, thereby when carrying out deep hole drilling, can guarantee the processingquality of deep hole.
In the present embodiment, the number of the centering segments 21 and the number of the cutting segments 22 are two, and the two centering segments 21 and the two cutting segments 22 are respectively disposed in a rotational symmetry manner.
Each centering section 21 comprises two centering ends 211, and a first included angle is formed between the two centering ends 211;
each cutting segment 22 comprises two cutting ends 221, and a second included angle is formed between the two cutting ends 221;
wherein the first included angle is larger than the second included angle.
The first included angle between the two centering ends 211 is larger than the second included angle, so that the structural strength of the centering ends 211 can be increased, and the centering ends can smoothly press dents on an object to be processed without damage.
Preferably, the second included angle is 90 °. By setting the second included angle to 90 °, the cutting section 22 can also be processed for chamfering, increasing the functions of the drill bit and reducing the number of cutters on the machine tool.
Wherein the first included angle is 90-120 degrees.
In the present embodiment, the end of the centering segment 21 close to the cutting segment 22 is a first arc end 212, and the first arc end 212 opens to the end far away from the cutting segment 22.
One end that contacts through centering section 21 and cutting segment 22 sets up to first circular arc end 212, centering section 21 that can make and cutting segment 22 between transition more gentle to in the operation of drilling, reduce stress concentration point, increase the structural strength of drill bit.
The end of the cutting segment 22 close to the chip groove 23 is a second arc end 222, and the second arc end 222 opens to the end close to the chip groove 23.
Through being the second circular arc end 222 with cutting segment 22 in the one end that is close to chip groove 23 for the transition is more gentle between cutting segment 22 and the chip groove 23, and in the operation of drilling, the one side reduces stress concentration point, increases the structural strength of drill bit, and on the other hand makes things convenient for clastic discharge.
In the present embodiment, the number of the chip flutes 23 is four, two chip flutes 23 correspond to the two cutting segments 22, and the other two chip flutes 23 are respectively located between the two cutting segments 22. Wherein, the two chip grooves 23 between the two cutting segments 22 are in a circular arc structure 231 at one end far away from the cutting segments 22.
Through setting up four chip grooves 23, wherein two chip grooves 23 correspond with two cutting sections 22, and other two chip grooves 23 are located respectively between two cutting sections 22, can be abundant discharge the piece, and the one end of the chip groove 23 that is located between two cutting sections 22 keeping away from cutting sections 22 is circular arc structure 231 to in-process at drilling, the piece can not extrude in chip groove 23, can be more convenient discharge along chip groove 23.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A deep-hole straight flute drill bit, comprising:
the drilling rod portion and drill bit portion, the drilling rod portion dress clamp is in the lathe main shaft, drill bit portion includes:
a centering section at an end of the bit portion remote from the bit portion for centering the bit portion prior to drilling;
a cutting section, which is positioned at one end of the centering section close to the drill shank part and cuts when drilling;
a plurality of chip grooves, it is a plurality of the chip groove is located the cutting section is close to the one end of drillstock portion supplies the piece of cutting section is discharged, and is a plurality of chip groove length extending direction is on a parallel with drillstock portion length extending direction.
2. The deep-hole straight-flute drill bit according to claim 1, characterized in that the number of the centering sections and the number of the cutting sections are two, and the two centering sections and the two cutting sections are respectively arranged in rotational symmetry.
3. The deep-hole straight flute drill bit according to claim 2, wherein each of said centering segments comprises two centering ends, a first included angle being formed between said two centering ends;
each cutting section comprises two cutting ends, and a second included angle is formed between the two cutting ends;
wherein the first included angle is greater than the second included angle.
4. A deep-hole straight flute drill bit according to claim 3, characterized in that said second included angle is 90 °.
5. The deep-hole straight flute drill bit according to claim 4, wherein said first included angle is 90 ° -120 °.
6. The deep-hole straight flute drill bit according to claim 2, characterized in that said centering section is a first circular arc end at an end close to said cutting section, said first circular arc end opening towards an end remote from said cutting section.
7. The deep-hole straight flute drill bit according to claim 6, wherein said cutting section is a second radiused end at an end adjacent to said flute, said second radiused end opening toward an end adjacent to said flute.
8. The deep-hole straight flute drill bit according to claim 2, wherein the number of said flutes is four, two of said flutes corresponding to two of said cutting segments and two of said flutes being located between two of said cutting segments, respectively.
9. The deep-hole straight flute drill bit according to claim 8, wherein two of said flutes between said cutting segments are of circular-arc configuration at an end remote from said cutting segments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122876361.0U CN216421177U (en) | 2021-11-22 | 2021-11-22 | Deep hole straight flute drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122876361.0U CN216421177U (en) | 2021-11-22 | 2021-11-22 | Deep hole straight flute drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216421177U true CN216421177U (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122876361.0U Active CN216421177U (en) | 2021-11-22 | 2021-11-22 | Deep hole straight flute drill bit |
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| CN (1) | CN216421177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255426A (en) * | 2022-07-15 | 2022-11-01 | 东风汽车集团股份有限公司 | Centering rotary power drilling tool for removing welding spots and welding spot removing method |
-
2021
- 2021-11-22 CN CN202122876361.0U patent/CN216421177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255426A (en) * | 2022-07-15 | 2022-11-01 | 东风汽车集团股份有限公司 | Centering rotary power drilling tool for removing welding spots and welding spot removing method |
| CN115255426B (en) * | 2022-07-15 | 2024-04-19 | 东风汽车集团股份有限公司 | Centering rotary power drilling tool for removing welding spots and welding spot removing method |
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