CN209851150U - Special drilling bit for wood - Google Patents

Special drilling bit for wood Download PDF

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Publication number
CN209851150U
CN209851150U CN201822274087.8U CN201822274087U CN209851150U CN 209851150 U CN209851150 U CN 209851150U CN 201822274087 U CN201822274087 U CN 201822274087U CN 209851150 U CN209851150 U CN 209851150U
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CN
China
Prior art keywords
cutting
arc
shaped
shaped groove
cutting edge
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.)
Active
Application number
CN201822274087.8U
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Chinese (zh)
Inventor
吴宏
樊军胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rugao Thousand Dragon Tools Co Ltd
Original Assignee
Rugao Thousand Dragon Tools Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CN2018209452188 priority Critical
Priority to CN201820945218 priority
Application filed by Rugao Thousand Dragon Tools Co Ltd filed Critical Rugao Thousand Dragon Tools Co Ltd
Application granted granted Critical
Publication of CN209851150U publication Critical patent/CN209851150U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a special drilling bit of timber, its innovation point lies in: the cutting head comprises three cutting edges which are radially distributed at equal intervals by taking the axis of the drill shank as the center; the side surface of the upper end of each cutting edge is provided with a self-tapping thread groove, the side surface of each cutting edge provided with the lower end of the self-tapping thread groove is also provided with an arc-shaped groove, and the arc-shaped groove comprises a transverse arc-shaped groove and a drill tip arc-shaped groove which are sequentially arranged from inside to outside; and one side surface of the cutting edge at the lower end of the arc-shaped groove is provided with an S-shaped auxiliary cutting knife, and the S-shaped auxiliary cutting knives on the cutting edges are arranged in a staggered manner. The utility model has the advantages that: the utility model discloses change two cutting edges into three cutting edges, and each cutting edge adopts the structural style who takes self tapping thread groove main cutting edge and the combination of the vice cutting sword of S-shaped for the cutting is light, and simultaneously, can guarantee that the atress is even in the cutting process, reduces the cutting resistance, in addition, adopts two cutting structural style to cut, can improve cutting efficiency greatly.

Description

Special drilling bit for wood
Technical Field
The utility model belongs to the wood working instrument especially relates to a special drill bit of carpenter's drilling.
Background
Tools on drills, drilling machines, and drilling machines can create holes in a workpiece or rock. Slow "Goldbach conjecture, Petroleum head": "A nine five six years bar, the drilling material of our country is a bit nervous, the bit is not enough. When the hole digging operation is carried out in the working process, the drill bit rotates along with the vertical shaft and moves axially at the same time. The soil is cut under the action of torque and axial force of the drill bit, loosened under the action of extrusion and centrifugal force of the working blades, pressed to the pit wall by formed soil flow, and lifted to the ground along the page. When the soil flow moves to the position without pit wall blocking, the broken soil is thrown to the periphery of the pit due to the centrifugal force, and the pit digging process is completed.
The common twist drill and the flat wing drill are mainly used for drilling various kinds of wood in the prior art, the common twist drill only comprises a drill body and a drill handle, and the head of the drill body is conical, so that a drilled hole is not smooth enough in actual use, and meanwhile, due to large cutting resistance, the cutting is not light enough, and the efficiency is low.
Therefore, it is necessary to develop a drill bit for drilling wood, which is light and convenient to cut and can improve cutting efficiency.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a special drilling bit of timber that the cutting is light and can improve cutting efficiency.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides a timber special use drill bit, includes drill holder and cutting head, its innovation point lies in: the cutting head comprises three cutting edges which are radially distributed at equal intervals by taking the axis of the drill shank as the center; the side surface of the upper end of each cutting edge is provided with a self-tapping thread groove, the side surface of each cutting edge provided with the lower end of the self-tapping thread groove is also provided with an arc-shaped groove, and the arc-shaped groove comprises a transverse arc-shaped groove and a drill tip arc-shaped groove which are sequentially arranged from inside to outside; and one side surface of the cutting edge at the lower end of the arc-shaped groove is provided with an S-shaped auxiliary cutting knife, and the S-shaped auxiliary cutting knives on the cutting edges are arranged in a staggered manner.
Further, the S-shaped auxiliary cutting knife and the cutting edge are integrally formed, and the horizontal angle between the S-shaped auxiliary cutting knife blade and the cutting edge is 30-45 degrees.
The utility model has the advantages as follows:
(1) the special drilling drill bit for wood changes double cutting edges into three cutting edges, and each cutting edge adopts a structural form of combining a main cutting edge with a self-tapping thread groove and an S-shaped auxiliary cutting knife, so that the cutting is light, meanwhile, the stress in the cutting process can be ensured to be uniform, the cutting resistance is reduced, and in addition, the double-cutting structural form is adopted for cutting, so that the cutting efficiency can be greatly improved;
(2) the utility model discloses special drilling bit of timber, the vice cutting sword of S-shaped is whole takes shape with the cutting edge, can guarantee the combination fastness between the two, guarantees that the vice cutting sword of S-shaped is unlikely to the atress too big among the cutting process, and drops, and then has effectively guaranteed that the cutting can go on smoothly.
Drawings
Fig. 1 is a schematic structural diagram of the special drilling bit for wood of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Examples
The special wood drilling bit of the embodiment comprises a drill shank 1 and a cutting head 2, as shown in fig. 1, wherein the cutting head 2 comprises three cutting edges 21 which are radially distributed at equal intervals by taking the axis of the drill shank as the center; the side surface of the upper end of each cutting edge 21 is provided with a self-tapping thread groove 211, the side surface of each cutting edge provided with the lower end of the self-tapping thread groove 211 is also provided with an arc-shaped groove 212, and the arc-shaped groove 212 comprises a transverse arc-shaped groove and a drill tip arc-shaped groove which are sequentially arranged from inside to outside; an S-shaped auxiliary cutting blade 213 is arranged on one side of the cutting edge 21 at the lower end of the arc-shaped groove 212, and the S-shaped auxiliary cutting blades 213 on the cutting edges 21 are arranged in a staggered manner.
In this embodiment, in order to ensure the bonding strength between the S-shaped secondary cutting blade 213 and the cutting edge 21 and ensure that the S-shaped secondary cutting blade 213 does not fall off due to being stressed too much during the cutting process, the cutting process is effectively ensured to be performed smoothly, the S-shaped secondary cutting blade 213 and the cutting edge 21 are integrally formed, and the horizontal angle between the blade of the S-shaped secondary cutting blade and the cutting edge 21 is 30 to 45 °.
This embodiment special drilling drill of timber changes two cutting edges into three cutting edges, and each cutting edge 21 adopts the structural style who takes self tapping thread groove main cutting edge and the combination of the vice cutting sword of S-shaped for the cutting is light, and simultaneously, can guarantee that the cutting in-process atress is even, reduces the cutting resistance, in addition, adopts two cutting structural style cutting, can improve cutting efficiency greatly.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims (2)

1. A special drilling bit for wood comprises a drill handle and a cutting head, and is characterized in that: the cutting head comprises three cutting edges which are radially distributed at equal intervals by taking the axis of the drill shank as the center; the side surface of the upper end of each cutting edge is provided with a self-tapping thread groove, the side surface of each cutting edge provided with the lower end of the self-tapping thread groove is also provided with an arc-shaped groove, and the arc-shaped groove comprises a transverse arc-shaped groove and a drill tip arc-shaped groove which are sequentially arranged from inside to outside; and one side surface of the cutting edge at the lower end of the arc-shaped groove is provided with an S-shaped auxiliary cutting knife, and the S-shaped auxiliary cutting knives on the cutting edges are arranged in a staggered manner.
2. The wood-dedicated drilling bit according to claim 1, characterized in that: the S-shaped auxiliary cutting knife and the cutting edge are integrally formed, and the horizontal angle between the S-shaped auxiliary cutting knife blade and the cutting edge is 30-45 degrees.
CN201822274087.8U 2018-06-17 2018-12-31 Special drilling bit for wood Active CN209851150U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2018209452188 2018-06-17
CN201820945218 2018-06-17

Publications (1)

Publication Number Publication Date
CN209851150U true CN209851150U (en) 2019-12-27

Family

ID=68929745

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822274087.8U Active CN209851150U (en) 2018-06-17 2018-12-31 Special drilling bit for wood

Country Status (1)

Country Link
CN (1) CN209851150U (en)

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Legal Events

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GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Wu Hong

Inventor before: Wu Hong

Inventor before: Fan Junsheng

CB03 Change of inventor or designer information