CN210939747U - Woodworking drill bit - Google Patents
Woodworking drill bit Download PDFInfo
- Publication number
- CN210939747U CN210939747U CN201921751913.1U CN201921751913U CN210939747U CN 210939747 U CN210939747 U CN 210939747U CN 201921751913 U CN201921751913 U CN 201921751913U CN 210939747 U CN210939747 U CN 210939747U
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- drill bit
- auger stem
- tapping
- self
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Abstract
The utility model discloses a carpenter's drill bit, including the drilling rod, integrated into one piece is in the auger stem of drilling rod front end and the auger stem's front end center integrated into one piece has self-tapping drill bit set up the sweeps recess that is in same vertical line on the tapping tooth of middle part to bottom on the self-tapping drill bit, the sweeps recess is the same apart from self-tapping drill bit's axle center distance, auger stem's top surface is provided with the arc wall, form the drill bit between auger stem's terminal edge and the arc wall, auger stem's upper portion spiral radius is greater than auger stem's lower part spiral radius, and auger stem's upper portion spiral and lower part screwed connection department are the inclined plane. The utility model discloses a structure sets up rationally, is favorable to extracting at will in the use, also is favorable to in self tapping in-process chip breaking and chip removal operation moreover, is favorable to improving the efficiency of drilling, also is favorable to reducing the resistance when the drill bit goes into wood, is favorable to improving life, and is reliable and stable in utilization, and the suitability is strong and the practicality is good.
Description
Technical Field
The utility model belongs to the technical field of the drill bit, concretely relates to carpenter's drill bit.
Background
The carpenter's drill bit is a common structure, but the structure of carpenter's drill bit of prior art is comparatively fixed, and it can not extract at will in the use ground to easy chip breaking or chip removal are not smooth and easy when using, thereby can influence the normal use of carpenter's drill bit, and suitability and practicality receive the restriction.
Disclosure of Invention
The utility model aims at providing a structure sets up reasonable and the suitability is strong carpenter's drill bit.
Realize the technical scheme of the purpose is that a carpenter's drill bit, including the drilling rod, integrated into one piece is in the auger stem of drilling rod front end and be in auger stem's front end center integrated into one piece has self-tapping drill bit set up the lead bits recess that is in same vertical line on the tapping tooth outer wall of middle part to bottom on the self-tapping drill bit, lead bits recess apart from self-tapping drill bit's axle center distance the same, auger stem's top surface is provided with the arc wall, form the drill bit between auger stem's terminal edge and the arc wall, auger stem's upper portion spiral radius is greater than auger stem's lower part spiral radius, and auger stem's upper portion spiral and lower part screwed connection department are the inclined plane.
The groove radius of the chip guide groove is 3.5CM, and the angle is 130 degrees.
The utility model discloses has positive effect: the utility model discloses a structure sets up rationally, it has seted up the guide's recess on the tapping tooth outer wall of self tapping drill's middle part to bottom, not only be favorable to extracting at will in the use, and also be favorable to in self tapping in-process chip breaking and chip removal operation, be difficult to glutinous on self tapping drill's self tapping screw thread, be favorable to improving the efficiency of drilling, be provided with the arc wall at auger stem's terminal surface simultaneously, thereby it is more smooth and easy to make the drill bit more sharp and the chip removal in the use, can make the drill bit easily bore into at wood section, also be favorable to reducing the resistance when the drill bit goes into wood, and the spiral diameter at auger stem is different, can reduce the frictional force of lower part spiral and hole inner wall from the side, also more be favorable to carrying out the chip removal simultaneously, be favorable to improving life, stable in use is reliable, the suitability.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the following specific embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
(example 1)
Fig. 1 shows a specific embodiment of the present invention, wherein fig. 1 is a schematic structural diagram of the present invention.
Referring to fig. 1, the woodworking drill comprises a drill rod 1, an auger stem 2 integrally formed at the front end of the drill rod, a self-tapping drill 3 integrally formed at the center of the front end of the auger stem, chip guide grooves 4 in the same vertical line are formed in the outer walls of tapping teeth from the middle to the bottom of the self-tapping drill, the distance from the chip guide grooves to the axis of the self-tapping drill is the same, an arc-shaped groove 5 is formed in the top surface of the auger stem, a drill edge is formed between the end edge of the auger stem and the arc-shaped groove, the upper spiral radius of the auger stem is larger than the lower spiral radius of the auger stem, and the joint of the upper spiral and the lower spiral of the auger stem is an inclined surface 6.
The groove radius of the chip guide groove is 3.5CM, and the angle is 130 degrees.
The utility model discloses a structure sets up rationally, it has seted up the guide's recess on the tapping tooth outer wall of self tapping drill's middle part to bottom, not only be favorable to extracting at will in the use, and also be favorable to in self tapping in-process chip breaking and chip removal operation, be difficult to glutinous on self tapping drill's self tapping screw thread, be favorable to improving the efficiency of drilling, be provided with the arc wall at auger stem's terminal surface simultaneously, thereby it is more smooth and easy to make the drill bit more sharp and the chip removal in the use, can make the drill bit easily bore into at wood section, also be favorable to reducing the resistance when the drill bit goes into wood, and the spiral diameter at auger stem is different, can reduce the frictional force of lower part spiral and hole inner wall from the side, also more be favorable to carrying out the chip removal simultaneously, be favorable to improving life, stable in use is reliable, the suitability.
The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.
Claims (2)
1. The utility model provides a carpenter's drill bit, includes the drilling rod, integrated into one piece is in the auger stem of drilling rod front end and be in auger stem's front end center integrated into one piece has self-tapping drill bit, its characterized in that: the spiral drill rod is characterized in that chip guide grooves which are in the same vertical line are formed in tapping teeth from the upper middle part to the bottom part of the self-tapping drill bit, the chip guide grooves are the same in distance from the axis of the self-tapping drill bit, an arc-shaped groove is formed in the top surface of the spiral drill rod, a drill edge is formed between the end edge of the spiral drill rod and the arc-shaped groove, the spiral radius of the upper part of the spiral drill rod is larger than the spiral radius of the lower part of the spiral drill rod, and the spiral connection part of the upper part of the spiral.
2. The woodworking drill bit of claim 1, wherein: the groove radius of the chip guide groove is 3.5CM, and the angle is 130 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751913.1U CN210939747U (en) | 2019-10-18 | 2019-10-18 | Woodworking drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751913.1U CN210939747U (en) | 2019-10-18 | 2019-10-18 | Woodworking drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210939747U true CN210939747U (en) | 2020-07-07 |
Family
ID=71393757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921751913.1U Active CN210939747U (en) | 2019-10-18 | 2019-10-18 | Woodworking drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210939747U (en) |
-
2019
- 2019-10-18 CN CN201921751913.1U patent/CN210939747U/en active Active
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| GR01 | Patent grant |