CN213350944U - Flat drill convenient to change drill bit - Google Patents
Flat drill convenient to change drill bit Download PDFInfo
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- CN213350944U CN213350944U CN202022230935.2U CN202022230935U CN213350944U CN 213350944 U CN213350944 U CN 213350944U CN 202022230935 U CN202022230935 U CN 202022230935U CN 213350944 U CN213350944 U CN 213350944U
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Abstract
The utility model relates to a flat drill technical field specifically is a flat drill convenient to change drill bit, including flat drill bit portion, the one end of flat drill bit portion is provided with first external screw thread, flat drill bit portion is through first external screw thread fixedly connected with flat drill base, first screw hole has been seted up on the flat drill base, flat drill base top fixedly connected with second drill bit sword, the second screw hole has been seted up to the other end of second drill bit sword, the second drill bit sword is through the first drill bit sword of second screw hole fixedly connected with, the fixed second external screw thread that is provided with on the first drill bit sword, third screw hole has been seted up to the other end of first drill bit sword, first drill bit sword is through third screw hole fixedly connected with location drill bit, the fixed third external screw thread that is provided with of location drill bit. The utility model discloses, flat drill pole portion, flat drill base and second drill bit sword, first drill bit sword and the cooperation of location drill bit through screw thread fixed connection use, and the convenience and the application range of flat drill are improved to the different drill bits of convenient change according to the drilling requirement.
Description
Technical Field
The utility model relates to a flat drill especially relates to a flat drill convenient to change drill bit, belongs to flat drill technical field.
Background
The cutting part of the flat drill is ground into a flat body, and the main cutting edge is ground into a sharp angle and a rear angle to form a chisel edge; the auxiliary cutting edge grinds a relief angle and an auxiliary deflection angle and controls the diameter of a drill hole, the rake angle of the flat drill is small, a spiral groove is not formed, chip removal is difficult, the manufacturing is simple, the cost is low, and the small hole with the diameter of less than 1mm is widely applied to processing;
the flat drill is greatly improved in structure and has the advantages, so that the flat drill is also used when a hole with the diameter of more than 35mm is machined on an automatic line and a numerical control machine tool, the traditional flat drill is made of high-speed steel, the cutting speed is low, the working front angle of the flat drill is a negative front angle due to the limitation of an integral structure, and the axial force and the torque are large; the guiding of the flat drill is mainly dependent on a positioning guide key on a flat drill chuck, and the flat drill is unstable in guiding and easy to deviate; the cutting edges of the flat drill are of a symmetrical structure, the thickness of the cutting layer cannot be effectively divided, when a solid piece is drilled, if the tool point of the flat drill is dull, extrusion can be formed on the surface of the workpiece, so that the drilling force and the torque are suddenly increased, the edge breaking phenomenon is caused, and the flat drill is scrapped;
in the existing flat drill, most of the flat drills exist in an integral form, but due to different drilling requirements, the flat drills can be used in a matched mode, and therefore the flat drills need to be disassembled and replaced for meeting the requirements, and therefore certain inconvenience is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flat drill convenient to change drill bit is equipped with flat drill rod portion, flat drill base and second drill bit sword, first drill bit sword and the location drill bit through screw thread fixed connection, and the convenience and the application range of flat drill are improved to the different drill bits of convenient change according to the drilling requirement.
In order to achieve the above object, the utility model discloses a main technical scheme include:
a flat drill convenient for replacing a drill bit comprises a flat drill bit part, wherein one end of the flat drill bit part is provided with a first external thread, the flat drill rod part is fixedly connected with a flat drill base through the first external thread, a first threaded hole matched with the first external thread for use is formed in the flat drill base, a second drill bit blade is fixedly connected above the flat drill base, a second threaded hole is formed in the other end of the second drill bit blade, the second drill bit blade is fixedly connected with a first drill bit blade through the second threaded hole, a second external thread matched with the second threaded hole for use is fixedly arranged on the first drill bit blade, the other end of the first drill bit blade is provided with a third threaded hole, the first drill bit blade is fixedly connected with a positioning drill bit through the third threaded hole, and a third external thread matched with the third threaded hole for use is fixedly arranged on the positioning drill bit.
Preferably, the cross section of the positioning drill bit is triangular, and a plurality of reinforcing ribs are arranged on two sides of the positioning drill bit.
Preferably, the outer surface of the flat drill rod part is provided with anti-skid grains, and the anti-skid grains are arranged in the middle of the flat drill rod part.
Preferably, the second threaded hole has the same diameter as the second external thread, and the second threaded hole has the same outer diameter as the third external thread.
Preferably, a chamfer structure is arranged between the flat drill base and the second drill bit.
Preferably, an installation step is arranged at one end, far away from the first external thread, of the flat drill rod part, and a magnet is arranged on the installation step.
Preferably, the rotation centers of the spade drill rod part, the spade drill base, the second drill blade, and the first drill blade are on the same horizontal plane.
The utility model discloses possess following beneficial effect at least:
1. be equipped with flat drill rod portion, flat drill base and second drill bit sword, first drill bit sword and the location drill bit through screw thread fixed connection, the convenience is changed different drill bits according to the drilling requirement, improves flat drill's convenience and application range.
2. The two sides of the positioning drill bit are provided with a plurality of reinforcing ribs, and the drilling effect is enhanced in the process of positioning the drill bit.
3. Be provided with the chamfer structure between flat drill base and the second drill bit sword, increase the chamfer effect, can increase hole limit chamfer structure when the drilling of second drill bit sword is ended, avoid the hole limit burr to exist, increase the smoothness on hole limit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the base of the spade drill of the present invention;
FIG. 3 is a schematic view of a flat drill rod portion of the present invention;
fig. 4 is a schematic diagram of the present invention.
In the figure, 1-flat drill rod part, 101-first external thread, 2-flat drill base, 201-first threaded hole, 3-second drill bit, 301-second threaded hole, 4-first drill bit, 401-second external thread, 402-third threaded hole, 5-positioning drill bit, 501-third external thread, 502-reinforcing rib, 6-chamfer structure, 7-mounting step, 8-magnet and 9-anti-slip pattern.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
As shown in fig. 1 to 4, the flat drill convenient for replacing the drill bit provided by this embodiment includes a flat drill bit portion 1, one end of the flat drill bit portion 1 is provided with a first external thread 101, the flat drill bit portion 1 is fixedly connected to a flat drill base 2 through the first external thread 101, the flat drill base 2 is provided with a first threaded hole 201 used in cooperation with the first external thread 101, the flat drill base 2 is installed on the flat drill bit portion 1 in a thread fixing manner through the thread cooperation of the first external thread 101 and the first threaded hole 201, the connection is stable, the operation is convenient, the convenience in the installation process of the flat drill is improved, a second drill bit 3 is fixedly connected above the flat drill base 2, the other end of the second drill bit 3 is provided with a second threaded hole 301, the second drill bit 3 is fixedly connected to a first drill bit 4 through the second threaded hole 301, the first drill bit 4 is fixedly provided with a second external thread 401 used in cooperation with the second threaded hole 301, the first drill bit blade 4 is installed on the second drill bit blade 3 in a thread fixing mode through the thread matching of the second threaded hole 301 and the second external thread 401, the installation is convenient, drill bits of different sizes can be conveniently replaced according to drilling requirements, different drilling requirements are met, the convenience and the application range of the flat drill are improved, the third threaded hole 402 is formed in the other end of the first drill bit blade 4, the first drill bit blade 4 is fixedly connected with the positioning drill bit 5 through the third threaded hole 402, the positioning drill bit 5 is fixedly provided with the third external thread 501 matched with the third threaded hole 402 for use, the positioning drill bit 5 is installed on the first drill bit blade 4 in a thread fixing mode through the thread matching of the third threaded hole 402 and the third external thread 501, the positioning function in the use process of the flat drill is improved, deviation in drilling is avoided, and the accuracy and the safety of the flat drill are improved.
In this embodiment, as shown in fig. 1, the cross section of the positioning drill 5 is triangular, which facilitates positioning, and a plurality of reinforcing ribs 502 are disposed on two sides of the positioning drill 5, so that the drilling effect is enhanced in the positioning process.
In this embodiment, as shown in fig. 1, 3 and 4, the outer surface of the flat drill rod part 1 is provided with the anti-slip pattern 9, the anti-slip pattern 9 is arranged in the middle of the flat drill rod part 1, so that the use of people is facilitated, the anti-slip pattern 9 increases the friction force between the hand and the rod part, the problem that the hand cannot be screwed down due to slipping of the hand is avoided, and the safety of the device is improved.
In the present embodiment, as shown in fig. 1, the second screw hole 301 and the second external screw 401 have the same diameter, the second screw hole 301 and the third external screw 501 have the same outer diameter, and the pilot bit 5 is directly attached to the second drill bit 3 for use, thereby increasing the usable range of the spade drill.
In this embodiment, as shown in fig. 1, a chamfering structure 6 is provided between the spade drill base 2 and the second drill bit 3, so as to increase chamfering effect, and the hole edge chamfering structure can be increased when the second drill bit 3 finishes drilling, thereby avoiding the existence of hole edge burrs and increasing the smoothness of the hole edge.
In this embodiment, as shown in fig. 1, the one end of the flat drill rod part 1 that is far away from the first external screw thread 101 is provided with the installation step 7, is provided with magnet 8 on the installation step 7, and when the flat drill used, magnet 8 on the installation step 7 was put into the mounting groove of drilling tool, and the convenient stable flat drill made things convenient for people's operation at the in-process of tight flat drill of dress, improved the convenience of flat drill.
In this embodiment, as shown in fig. 1, the rotation centers of the flat drill rod part 1, the flat drill base 2, the second drill bit blade 3 and the first drill bit blade 4 are on the same horizontal plane, so that the flat drill is ensured not to be damaged and deviated in the use process, the advertisement drilling effect is improved, the unqualified drilling is avoided, and the safety of the flat drill is improved.
As shown in fig. 1 to 4, the flat drill provided by the present embodiment for facilitating bit replacement is used in the following steps: use through third screw hole 402 and third external screw thread 501 screw-thread fit and install location drill bit 5 on first drill bit sword 4 with thread fastening's mode, use through the screw-thread fit of second screw hole 301 and second external screw thread 401 and install first drill bit sword 4 on second drill bit sword 3 with thread fastening's mode, use through the screw-thread fit of first external screw thread 101 and first screw hole 201 and install flat drill base 2 on flat drill rod portion 1 with thread fastening's mode, magnet 8 on the installation step 7 is put into the mounting groove of drilling tool and is screwed up, in the use, use after fixing a position with location drill bit 5.
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to achieve the technical effect basically.
It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or system in which the element is included.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (7)
1. A flat drill convenient for replacing a drill bit comprises a flat drill bit part (1) and is characterized in that a first external thread (101) is arranged at one end of the flat drill bit part (1), the flat drill bit part (1) is fixedly connected with a flat drill base (2) through the first external thread (101), a first threaded hole (201) matched with the first external thread (101) for use is formed in the flat drill base (2), a second drill bit blade (3) is fixedly connected above the flat drill base (2), a second threaded hole (301) is formed in the other end of the second drill bit blade (3), a first drill bit blade (4) is fixedly connected with the second drill bit blade (3) through the second threaded hole (301), a second external thread (401) matched with the second threaded hole (301) for use is fixedly arranged on the first drill bit blade (4), and a third threaded hole (402) is formed in the other end of the first drill bit blade (4), the first drill bit edge (4) is fixedly connected with a positioning drill bit (5) through the third threaded hole (402), and a third external thread (501) matched with the third threaded hole (402) for use is fixedly arranged on the positioning drill bit (5).
2. The spade drill with easy bit replacement according to claim 1, wherein: the cross section of the positioning drill bit (5) is triangular, and a plurality of reinforcing ribs (502) are arranged on two sides of the positioning drill bit (5).
3. The spade drill with easy bit replacement according to claim 1, wherein: the anti-skidding drill rod is characterized in that anti-skidding lines (9) are arranged on the outer surface of the flat drill rod part (1), and the anti-skidding lines (9) are arranged in the middle of the flat drill rod part (1).
4. The spade drill with easy bit replacement according to claim 1, wherein: the second threaded hole (301) and the second external thread (401) are the same in aperture, and the second threaded hole (301) and the third external thread (501) are the same in outer diameter.
5. The spade drill with easy bit replacement according to claim 1, wherein: a chamfer structure (6) is arranged between the flat drill base (2) and the second drill bit blade (3).
6. The spade drill with easy bit replacement according to claim 1, wherein: the end, far away from first external screw thread (101), of flat drill pole portion (1) is provided with installation step (7), be provided with magnet (8) on installation step (7).
7. The spade drill with easy bit replacement according to claim 1, wherein: the rotation centers of the flat drill rod part (1), the flat drill base (2), the second drill bit blade (3) and the first drill bit blade (4) are on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022230935.2U CN213350944U (en) | 2020-10-09 | 2020-10-09 | Flat drill convenient to change drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022230935.2U CN213350944U (en) | 2020-10-09 | 2020-10-09 | Flat drill convenient to change drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213350944U true CN213350944U (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022230935.2U Active CN213350944U (en) | 2020-10-09 | 2020-10-09 | Flat drill convenient to change drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213350944U (en) |
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2020
- 2020-10-09 CN CN202022230935.2U patent/CN213350944U/en active Active
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