CN214392495U - High-efficient fluted drill - Google Patents
High-efficient fluted drill Download PDFInfo
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- CN214392495U CN214392495U CN202120377134.0U CN202120377134U CN214392495U CN 214392495 U CN214392495 U CN 214392495U CN 202120377134 U CN202120377134 U CN 202120377134U CN 214392495 U CN214392495 U CN 214392495U
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- edge
- groove
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- twist drill
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Abstract
The utility model relates to a high-efficient fluted drill. Comprises a handle part and a working part, wherein the working part is provided with a spiral groove and a blade back; the top of the working part is a drill tip, a rear cutter face is arranged on the drill tip, a cross edge is arranged at the intersection of adjacent rear cutter faces, and a cutting edge is arranged at the edge of the cross edge; the rear knife face is provided with a groove along the chisel edge, and the groove divides the rear furrow edge of the rear knife face and is communicated with the spiral groove. Compared with the conventional drill type, the utility model has good chip breaking effect, improves the drilling efficiency and reduces the number of sharpening times; and a second rear cutter face is not arranged, so that the strength of the cutting edge is improved.
Description
Technical Field
The utility model relates to a machine cutter field, specifically speaking relates to a high-efficient fluted drill.
Background
Twist drills are tools that drill round holes in a workpiece by rotary cutting thereof about a fixed axis. The flute is spiral and shaped like twist. The helical groove has 2, 3 or more grooves, but 2 grooves are most common. Twist drills can be used clamped on hand-held drilling tools, both manual and electric, or drilling, milling, turning and even machining centers. The bit material is typically high speed tool steel or cemented carbide.
The chip breaking effect of the traditional twist drill is poor, the cutting edge is extremely easy to wear, and the edge is extremely easy to collapse due to the influence of spiral iron chips, so that the drilling efficiency of the drill bit is low, and the drill bit needs to be frequently sharpened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main objective is providing a high-efficient fluted drill to solve the chip breaking problem, improve drilling efficiency, reduce the sharpening number of times.
In order to achieve the purpose, the utility model provides a high-efficiency twist drill, which comprises a handle part and a working part, wherein the working part is provided with a spiral groove and a blade back; the top of the working part is a drill tip, a rear cutter face is arranged on the drill tip, a cross edge is arranged at the intersection of adjacent rear cutter faces, and a cutting edge is arranged at the edge of the cross edge; the rear knife face is provided with a groove along the chisel edge, and the groove divides the rear furrow edge of the rear knife face and is communicated with the spiral groove.
Furthermore, the groove is an arc-shaped groove or a V-shaped groove.
Furthermore, the efficient twist drill is a double-groove twist drill or a three-groove twist drill.
Further, the included angle between the axis of the groove and the axis of the handle part is 45-60 degrees.
Further, the handle is cylindrical or polygonal.
Compared with the conventional drill type, the utility model has good chip breaking effect, improves the drilling efficiency and reduces the number of sharpening times; and a second rear cutter face is not arranged, so that the strength of the cutting edge is improved.
Drawings
Fig. 1 is the utility model relates to a high-efficient fluted drill structure sketch map.
Fig. 2 is the utility model relates to a high-efficient fluted drill work portion point of a drill tip structure sketch map.
Wherein, 1-handle; 2-a working part; 21-a helical groove; 22-blade back; 23-a drill tip; 231-flank face; 232-chisel edge; 233-a cutting edge; 234-groove.
Detailed Description
To achieve the above objects and advantages, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, the present invention provides a high efficiency twist drill, which comprises a handle part 1 and a working part 2, wherein the working part 2 is provided with a spiral groove 21 and a blade back 22; the top of the working part is a drill tip 23, a rear cutter face 231 is arranged on the drill tip 23, a cross edge 232 is arranged at the intersection of adjacent rear cutter faces, and a cutting edge 233 is arranged at the edge of the cross edge 232; a groove 234 is formed in the flank 231 along the chisel edge, and the groove 234 divides the rear ridge of the flank 231 and communicates with the spiral groove 21.
The groove 234 is an arc-shaped groove or a V-shaped groove.
The efficient twist drill is a double-groove twist drill or a three-groove twist drill.
The included angle between the axis of the groove 234 and the axis of the handle part 1 is 45-60 degrees.
The handle 1 is cylindrical or polygonal.
The above description is only a preferred embodiment of the present invention, and not all embodiments, and any person should learn the structural changes made under the teaching of the present invention, and all the technical solutions identical or similar to the present invention all belong to the protection scope of the present invention.
Claims (5)
1. An efficient twist drill comprises a handle part and a working part, wherein the working part is provided with a spiral groove and a blade back; the top of the working part is a drill tip, a rear cutter face is arranged on the drill tip, a cross edge is arranged at the intersection of adjacent rear cutter faces, and a cutting edge is arranged at the edge of the cross edge; the spiral groove cutting machine is characterized in that a groove is formed in the rear cutter face along the chisel edge, and divides a rear furrow edge of the rear cutter face and is communicated with the spiral groove.
2. A high efficiency twist drill according to claim 1, wherein the recess is an arcuate or V-shaped groove.
3. A high efficiency twist drill according to claim 1 or 2, wherein the high efficiency twist drill is a double flute twist drill or a triple flute twist drill.
4. A high efficiency twist drill according to claim 1 or claim 2, wherein the recess axis is angled at 45 to 60 degrees to the shank axis.
5. A high efficiency twist drill according to claim 1, wherein the shank portion is cylindrical or polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120377134.0U CN214392495U (en) | 2021-02-19 | 2021-02-19 | High-efficient fluted drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120377134.0U CN214392495U (en) | 2021-02-19 | 2021-02-19 | High-efficient fluted drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214392495U true CN214392495U (en) | 2021-10-15 |
Family
ID=78024995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120377134.0U Active CN214392495U (en) | 2021-02-19 | 2021-02-19 | High-efficient fluted drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214392495U (en) |
-
2021
- 2021-02-19 CN CN202120377134.0U patent/CN214392495U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211109 Address after: 212000 Yicheng Changlu Industrial Park, danbei Town, Danyang City, Zhenjiang City, Jiangsu Province Patentee after: DANYANG KAI YI YUAN TOOLS Co.,Ltd. Address before: Yicheng Industrial Park, danbei Town, Danyang City, Zhenjiang City, Jiangsu Province Patentee before: Jiangsu Fengyuan Tools Co.,Ltd. |