CN218983288U - Conical head twist drill - Google Patents
Conical head twist drill Download PDFInfo
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- CN218983288U CN218983288U CN202222627765.0U CN202222627765U CN218983288U CN 218983288 U CN218983288 U CN 218983288U CN 202222627765 U CN202222627765 U CN 202222627765U CN 218983288 U CN218983288 U CN 218983288U
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- spiral groove
- conical
- twist drill
- twist
- spiral
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Abstract
The utility model discloses a conical head twist drill which comprises a conical part, a twist part and a second cylindrical part which are sequentially adjacent along a direction, wherein the conical part comprises a conical part, a first spiral groove is formed in the peripheral side surface of the conical part, one end of the first spiral groove extends to the tip of the conical part, the other end of the first spiral groove extends to the bottom surface of the conical part, the twist part comprises a first cylindrical part, a second spiral groove is formed in the peripheral side surface of the first cylindrical part, and the other end of the first spiral groove is communicated with one end of the second spiral groove. The twist drill provided by the utility model is provided with the conical part and the twist part, wherein the cross section area of the tip end of the conical part is small, compared with the twist drill with the same specification, the twist drill with the conical part has the advantages that the punching efficiency is improved greatly, and the head part is reduced, the pressure intensity is increased, the punching is easier, and higher power is not needed during the punching.
Description
Technical Field
The utility model relates to a conical head twist drill.
Background
Twist drills are tools that drill round holes in a workpiece by rotating them about a fixed axis. The chip flute is spiral and is similar to a twist.
At present, the diameter difference between the top end part of the drill bit and other working parts (other parts with spiral grooves) of the conventional twist drill (trapezoid twist drill) is small, so that the cross-sectional area of the top end part of the drill bit is large, the drilling efficiency is low, and the required (drilling machine) power is large when the twist drill is used for drilling.
Disclosure of Invention
The utility model mainly aims to provide the conical head twist drill which is convenient for drilling, can improve the drilling efficiency and does not need higher power of a drilling machine during drilling.
The aim of the utility model can be achieved by adopting the following technical scheme:
the utility model provides a cone fluted drill, includes adjacent toper portion, fried dough twist portion and second cylinder portion in proper order along a direction, toper portion is including the toper portion, the periphery side of toper portion is provided with first spiral slot, the tip department of toper portion is extended to the one end of first spiral slot, the bottom surface department of conical portion is extended to the other end of first spiral slot, fried dough twist portion is including first cylinder portion, the periphery side of first cylinder portion is provided with the second spiral slot, the other end of first spiral slot with the one end of second spiral slot is put through, the bottom surface size of toper portion, first cylinder portion and second cylinder portion is the same.
Preferably, the diameter ratio of the two ends of the conical part is 1:15.4 or 0.65:8.55.
Preferably, the width of the first spiral groove increases gradually from the tip of the conical portion to the bottom surface of the conical portion.
Preferably, the width of the second spiral groove is the same as the width of the first spiral groove at the bottom surface of the first spiral groove.
The beneficial technical effects of the utility model are as follows:
1. the twist drill provided by the utility model is provided with the conical part and the twist part, wherein the cross section area of the tip end of the conical part is small, compared with the twist drill with the same specification, the twist drill with the conical part is more convenient to punch, the punching efficiency is improved greatly, and the head part is smaller, the pressure intensity is larger, and the punching is easier, so that higher power is not needed during punching.
2. The diameter of the bottom surface of the conical part is consistent with the diameter of the bottom surface of the first cylindrical part, and the width of the joint of the first spiral groove and the second spiral groove is consistent, so that the first spiral groove and the second spiral groove can be conveniently processed at one time, and in addition, the diameters of the bottom surfaces of the first cylindrical part and the second cylindrical part are the same, so that the integral strength of the twist drill can be effectively ensured.
Drawings
FIG. 1 is a schematic front view of an embodiment in accordance with the utility model;
in the figure: 1-conical part, 101-conical part, 102-first spiral groove, 2-twist part, 201-first cylindrical part, 202-second spiral groove, 3-second cylindrical part.
Detailed Description
In order to make the technical solution of the present utility model more clear and obvious to those skilled in the art, the present utility model will be described in further detail with reference to examples and drawings, but the embodiments of the present utility model are not limited thereto.
As shown in fig. 1, the cone twist drill provided in this embodiment includes a cone portion 1, a twist portion 2 and a second cylindrical portion 3 that are sequentially adjacent along a direction, where the cone portion 1 includes a cone portion 101, the cone portion 101 has a tip and a bottom, a first spiral groove 102 is provided on an outer peripheral side surface of the cone portion 101, one end of the first spiral groove 102 extends to the tip of the cone portion 101, and the other end of the first spiral groove 102 extends to the bottom of the cone portion 101, that is, the first spiral groove 102;
the twist drill 2 comprises a first cylindrical portion 201, a second spiral groove 202 is formed in the outer peripheral side face of the first cylindrical portion 201, the other end of the first spiral groove 102 is communicated with one end of the second spiral groove 202, the bottom faces of the conical portion 101, the first cylindrical portion 201 and the second cylindrical portion 3 are identical in size, the bottom faces of the conical portion 101 and the first cylindrical portion 201 are not provided with spiral grooves, machining of the first spiral groove and the second spiral groove is facilitated, and overall strength of the cone-head twist drill can be improved.
In the present embodiment, as shown in fig. 1, the diameter ratio of the two ends (tip and bottom) of the tapered portion 1 is 0.82:12.63 or 0.65:8.55, and the tapered portion 1 of this ratio can improve the drilling efficiency while ensuring the strength thereof.
In the present embodiment, as shown in fig. 1, the width of the first spiral groove 102 gradually increases from the tip of the conical portion 101 to the bottom surface of the conical portion 101, making the twist drill easy to use.
In this embodiment, as shown in fig. 1, the width of the second spiral groove 202 is the same as the width of the first spiral groove 102 at the bottom surface of the first spiral groove 102, so that the first and second spiral grooves can be processed at one time.
In summary, in this embodiment, the diameter of the bottom surface of the tapered portion 1 provided in this embodiment is consistent with the diameter of the bottom surface of the first cylindrical portion 201, and the width of the joint between the first and second spiral grooves is consistent, so that the first and second spiral grooves can be conveniently processed at one time, and in addition, the diameters of the bottom surfaces of the first and second cylindrical portions are the same, so that the overall strength of the twist drill can be effectively ensured.
The above description is merely a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art will be able to apply equivalents and modifications according to the technical solution and the concept of the present utility model within the scope of the present utility model disclosed in the present utility model.
Claims (4)
1. A cone-head twist drill, characterized in that: including adjacent toper portion (1), fried dough twist portion (2) and second cylinder portion (3) in proper order along a direction, toper portion (1) is including toper portion (101), the periphery side of toper portion (101) is provided with first spiral slot (102), the tip department of toper portion (101) is extended to the one end of first spiral slot (102), the other end of first spiral slot (102) extends to the bottom surface department of toper portion (101), fried dough twist portion (2) are including first cylinder portion (201), the periphery side of first cylinder portion (201) is provided with second spiral slot (202), the other end of first spiral slot (102) with the one end switch-on of second spiral slot (202), the bottom surface size of toper portion (101), first cylinder portion (201) and second cylinder portion (3) is the same.
2. The cone head twist drill of claim 1 wherein: the diameter ratio of the two ends of the conical part (1) is 1:15.4 or 0.65:8.55.
3. The cone head twist drill of claim 1 wherein: the width of the first spiral groove (102) gradually increases from the tip of the conical portion (101) to the bottom surface of the conical portion (101).
4. A cone head twist drill according to claim 3 wherein: the width of the second spiral groove (202) is the same as the width of the first spiral groove (102) at the bottom surface of the first spiral groove (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222627765.0U CN218983288U (en) | 2022-10-08 | 2022-10-08 | Conical head twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222627765.0U CN218983288U (en) | 2022-10-08 | 2022-10-08 | Conical head twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218983288U true CN218983288U (en) | 2023-05-09 |
Family
ID=86192747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222627765.0U Active CN218983288U (en) | 2022-10-08 | 2022-10-08 | Conical head twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218983288U (en) |
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2022
- 2022-10-08 CN CN202222627765.0U patent/CN218983288U/en active Active
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