CN2412687Y - Twist drill - Google Patents
Twist drill Download PDFInfo
- Publication number
- CN2412687Y CN2412687Y CN 00205039 CN00205039U CN2412687Y CN 2412687 Y CN2412687 Y CN 2412687Y CN 00205039 CN00205039 CN 00205039 CN 00205039 U CN00205039 U CN 00205039U CN 2412687 Y CN2412687 Y CN 2412687Y
- Authority
- CN
- China
- Prior art keywords
- drill
- drillstock
- drill body
- annular groove
- shank
- 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.)
- Expired - Fee Related
Links
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses a twist drill, which comprises a drill body and a drill shank, wherein, the drill body and the drill shank are fixed into a whole, the cross section of the drill shank forms a polygon, and the drill shank is provided with a concave ring. The twist drill has the effect of preventing relative rotation of the drill shank in a clamping tool when the twist drill is arranged in the clamping tool matched with the twist drill. Meanwhile, an elastic clamping and fixing device arranged on the clamping tool is clamped in the concave ring on the drill shank, and thus, the utility model can effectively avoid the drill loosing in the clamping tool, even falling. When the drill is disassembled and assembled, the user doesn't need to use any auxiliary tool, and the user can finish assembly and disassembly only by pushing or pulling the drill shank into a hole of the clamping tool. Therefore, the disassembly and the assembly of the drill is very simple, convenient and quick.
Description
The utility model relates to a kind of machine tool, especially a kind of fluted drill.
At present, in machining industry, its drillstock of the drill bit that is used to hole is generally cylindrical, drillstock inserts in the centre bore of jig, unscrew the jig retaining mechanism by special spanner, drillstock is clamped in the jig, usually the clamping face of jig is the inner polygon face, as three-jaw jig commonly used is the triangle face, the contact-making surface of itself and cylindrical drillstock is very little, obtain enough step up power and just need firmly tighten jig, even but like this, when boring, yet skid often, cause the wearing and tearing or the stuck phenomenon in boring of drill bit of drill handle part.In addition, this drill bit will be tightened or unclamps when dismounting with special spanner, and is cumbersome.
The purpose of this utility model is to improve the deficiencies in the prior art, provides a kind of clamping firm firm difficult loosening, and the fluted drill of easy accessibility.
For achieving the above object, the utility model is taked following design:
The fluted drill that the utility model provides includes drill body and drillstock, and described drill body and drillstock are solidified as a whole, and the cross section of described drillstock is a polygon, as triangle, quadrangle, pentagon or hexagon etc., also is provided with a spill annular groove on described drillstock.
The endoporus that is complementary with it on the fluted drill that the utility model provides and the supporting use of jig that has with the endoporus of drillstock cross-sections match, the polygon on its drillstock and jig cooperates the convex-concave polygonal body that dependence matches, the moment of torsion of transmission rig.Be provided with an elasticity clamping device on the inwall of this jig, described elasticity clamping device can snap in the spill annular groove set on the drillstock when the drillstock with this drill bit is inserted in the endoporus of jig, and the axially-movable of drillstock is controlled.
The fluted drill that the utility model provides, the circumscribed circle diameter of its polygonal drillstock can be less than the outside diameters of drill body, also can be more than or equal to the outside diameter of drill body.Drillstock is when thinner drill body combines, and drillstock can be made with non-tool steel material, and drill body adopts the special process method edge to be fixed among the drillstock.
The fluted drill that the utility model provides, drillstock and drill body all keep concentric circles.
The fluted drill that the utility model provides is in the jig that matches with it, the drillstock of its polygonal cross-section and the inner surface of jig interact, have the in relative rotation effect of the drillstock of prevention in jig, simultaneously, snap in described elasticity clamping device in the scrobicular ring on the drillstock, can avoid drill bit loosening even come off in jig effectively, simultaneously, use this drill bit, in dismounting, need not use any aid, only need drillstock is pushed away or one draws to the Kong Zhongyi of jig, can finish, so that the dismounting of drill bit becomes very simple and convenient and quick.
The utility model is described in further detail below in conjunction with accompanying drawing.
The structural representation of a kind of fluted drill that Fig. 1 provides for the utility model
The structural representation of the another kind of fluted drill that Fig. 2 provides for the utility model
The structural representation of another fluted drill that Fig. 3 provides for the utility model
Embodiment 1:
As shown in Figure 1, the fluted drill that the utility model provides includes drill body 1 and drillstock 2, and the diameter of drill body 1 is less than the orthohexagonal external diameter of a circle of drillstock 2.Drillstock 2 usefulness kirsites are made, and drill body 1 edge is fixed among the drillstock.Be provided with a spill annular groove 21 on drillstock 2, the center line of the annular groove 21 on axial section is 1.3～1.5 times of regular hexagon circumscribed circle diameter of drillstock apart from the distance of drillstock end face.The degree of depth of annular groove is 0.178 times of regular hexagon circumscribed circle diameter of drillstock, and annular groove is that a radius is the circular arc of 4.4～4.6mm on axial section.
Embodiment 2:
As shown in Figure 2, fluted drill includes drill body 1 ' and drillstock 2 ', and the diameter of drill body 1 ' is greater than the orthohexagonal external diameter of a circle of drillstock 2 '.On drillstock 2 ', be provided with a spill annular groove 21 '.Drill body and drillstock are that same material is made one.The structure of spill annular groove is with embodiment 1.
Embodiment 3:
As shown in Figure 3, fluted drill includes drill body 1 " and drillstock 2 ", drill body 1 " diameter equal drillstock 2 " orthohexagonal external diameter of a circle.At drillstock 2 " on be provided with a spill annular groove 21 ".The structure of spill annular groove and other structure are with embodiment 1.
Drill body in the fluted drill in the above-described embodiments is the fluted drill of standard.
Claims (6)
1, a kind of fluted drill includes drill body and drillstock, and described drill body and drillstock keep being fixedly connected circularly with one heart, and it is characterized in that: the cross section of described drillstock is a polygon, is provided with a spill annular groove on described drillstock.
2, fluted drill according to claim 1 is characterized in that: the cross section of described drillstock is a regular hexagon.
3, fluted drill according to claim 1 is characterized in that: the cross section of described drillstock is triangle or quadrangle or pentagon.
4, fluted drill according to claim 2 is characterized in that: on axial section, the center line of described annular groove is 1.3～1.5 times of regular hexagon circumscribed circle diameter of drillstock apart from the distance of drillstock end face.The degree of depth of annular groove is 0.178 times of regular hexagon circumscribed circle diameter of drillstock, and annular groove is that a radius is the circular arc of 4.4～4.6mm on axial section.
5, fluted drill according to claim 4 is characterized in that: the diameter of described drill body is less than or equal to the orthohexagonal external diameter of a circle of drillstock, and described drill body edge is fixed among the drillstock.
6, fluted drill according to claim 4 is characterized in that: the diameter of described drill body is greater than the orthohexagonal external diameter of a circle of drillstock, and described drill body and drillstock are one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00205039 CN2412687Y (en) | 2000-03-13 | 2000-03-13 | Twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00205039 CN2412687Y (en) | 2000-03-13 | 2000-03-13 | Twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2412687Y true CN2412687Y (en) | 2001-01-03 |
Family
ID=33573281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00205039 Expired - Fee Related CN2412687Y (en) | 2000-03-13 | 2000-03-13 | Twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2412687Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100548548C (en) * | 2001-08-28 | 2009-10-14 | 马克斯泰克制造有限公司 | Assembled drill and processing method thereof |
| CN106735458A (en) * | 2017-03-29 | 2017-05-31 | 丹阳市博瑞工具有限公司 | A kind of Novel hexagonal handle drill |
| CN107225272A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of high speed steel twist drill used on lathe |
| CN112692341A (en) * | 2021-01-06 | 2021-04-23 | 上海钰工机电有限公司 | Rod-like rotary cutting device |
-
2000
- 2000-03-13 CN CN 00205039 patent/CN2412687Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100548548C (en) * | 2001-08-28 | 2009-10-14 | 马克斯泰克制造有限公司 | Assembled drill and processing method thereof |
| CN107225272A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of high speed steel twist drill used on lathe |
| CN106735458A (en) * | 2017-03-29 | 2017-05-31 | 丹阳市博瑞工具有限公司 | A kind of Novel hexagonal handle drill |
| CN112692341A (en) * | 2021-01-06 | 2021-04-23 | 上海钰工机电有限公司 | Rod-like rotary cutting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: ZHU XIAOKUN TO: JIANGSU TIANGONG TOOLS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Tiangong Tools Co., Ltd., Jiangsu Prov. Patentee before: Zhu Xiaokun |
|
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU TIANGONG TOOL CO., LTD. Free format text: FORMER NAME OR ADDRESS: JIANGSU TIANGONG TOOLS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangsu 212312 Danyang province Jiangsu City Zhen Tiangong group Patentee after: Jiangsu Tiangong Tool Co., Ltd. Address before: Jiangsu 212312 Danyang province Jiangsu City Zhen Tiangong group Patentee before: Tiangong Tools Co., Ltd., Jiangsu Prov. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010103 |