CN201427202Y - Hexagonal shank twist drill - Google Patents
Hexagonal shank twist drill Download PDFInfo
- Publication number
- CN201427202Y CN201427202Y CN2009200397275U CN200920039727U CN201427202Y CN 201427202 Y CN201427202 Y CN 201427202Y CN 2009200397275 U CN2009200397275 U CN 2009200397275U CN 200920039727 U CN200920039727 U CN 200920039727U CN 201427202 Y CN201427202 Y CN 201427202Y
- Authority
- CN
- China
- Prior art keywords
- twist drill
- shank
- hexagonal
- section
- handle
- 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 - Lifetime
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Abstract
The utility model relates to a metal cutter structure, in particular to a hexagonal shank twist drill which comprises a section of straight shank twist drill and a section of hexagonal shank; the shank of the straight shank twist drill is matched and nested with the central hole of the hexagonal shank; a section of cut plane groove is arranged on the outer surface of the shank of the straight shank twist drill; simultaneously, a position on the wall of the hexagonal shank which is opposite to the cut plane groove is provided with a concave part; and the material on the inner side of the concave part protrudes inwards and is filled in the space of the cut plane groove. The hexagonal shank twist drill has the advantages of simple structure, convenient processing, low requirement on the manufacturing process of the connection part and high connection strength, realizes positioning and connection by mould stamping, can adapt to the requirement of mass automatic production, improves the production efficiency, and reduces the material cost.
Description
Technical field
The utility model relates to the structure of metal cutting tool, specifically is a kind of hexagonal-handle twist drill.
Background technology
Common hexagonal-handle twist drill mainly contains two kinds of forms: a kind of is monolithic construction, be that fluted drill and hexagonal shank portion are processed by whole root timber material, the cutting tip of fluted drill and hexagonal shank portion are same high-performance steel in this structure, and material consumption is bigger in the process, thereby the material cost of product is higher; Another kind of is split interconnection system structure, to be fluted drill adopt different materials to process respectively with the hexagonal shank portion again is connected, this structure can significantly reduce the use of expensive steel, reduce material cost, but in the existing processing method, the hexagonal handle with adopt being connected of drill handle part more interference fit nested, radially wear mode such as pin riveted joint and realize, it is not only higher to the requirement on machining accuracy of product, the torsional strength after connecting is difficult for guaranteeing, and production process is loaded down with trivial details, production efficiency is low.
Summary of the invention
Technical problem to be solved in the utility model is that the hexagonal-handle twist drill that a kind of manufacturing process is simple, production efficiency is high, technological requirement is low, bonding strength is high is provided.
Hexagonal-handle twist drill of the present utility model includes one section straight shank twist drill and one section hexagonal handle, the shank of straight shank twist drill cooperates nested with the centre bore of hexagonal shank, have one section in the handle outer surface of straight shank twist drill and cut planar slot, install at the wall portion of the hexagonal handle position relative with cutting planar slot simultaneously and be equipped with a sunk part, the inside material of this sunk part is inwardly given prominence to and is filled in the above-mentioned space of cutting in the planar slot.
The utility model is simple in structure, easy to process, and its coupling part manufacture process requirement is low, bonding strength is high, adopts the mould punching press to realize being located by connecting, and can adapt to requirement of producing automatically in enormous quantities, has improved production efficiency, has reduced material cost.
Description of drawings
Fig. 1 is the vertical section structure schematic diagram of shank of the present utility model;
Fig. 2 is the plan structure schematic diagram of shank of the present utility model.
The specific embodiment
As shown in the figure, this hexagonal-handle twist drill includes one section straight shank twist drill 1 and one section hexagonal handle 2 of being made by different materials, the shank of straight shank twist drill cooperates nested with the centre bore of hexagonal shank, have one section in the handle outer surface of straight shank twist drill and cut planar slot 11, form a sunk part 21 in the wall portion of the hexagonal handle portion position relative with cutting planar slot by the diel punching press simultaneously, the inside material local deformation of this sunk part is inwardly given prominence to and is filled in the space of cutting in the planar slot.
The manufacturing of this hexagonal-handle twist drill is through following steps: the first step, and make straight shank twist drill respectively and have the hexagonal handle of centre bore, process one section in the handle outer surface of straight shank twist drill and cut planar slot; Second step cooperated the shank of straight shank twist drill nestedly with the centre bore of hexagonal handle, make and cut the plane of planar slot outside the hexagonal handle; The 3rd step, adopt mould hexagonal handle material to be carried out punching press at the position relative with cutting planar slot, make its local material distortion, form a sunk part, and the material of the inboard distortion of sunk part is filled in the space of cutting in the planar slot.
Claims (1)
1, a kind of hexagonal-handle twist drill, include one section straight shank twist drill (1) and one section hexagonal handle (2), the shank of straight shank twist drill cooperates nested with centre bore on the hexagonal handle, it is characterized in that: have one section in the handle outer surface of straight shank twist drill and cut planar slot (11), install at the wall portion of the hexagonal handle position relative with cutting planar slot (11) simultaneously and be equipped with a sunk part (21), the inside material of this sunk part is inwardly given prominence to and is filled in the above-mentioned space of cutting in the planar slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200397275U CN201427202Y (en) | 2009-04-29 | 2009-04-29 | Hexagonal shank twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200397275U CN201427202Y (en) | 2009-04-29 | 2009-04-29 | Hexagonal shank twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201427202Y true CN201427202Y (en) | 2010-03-24 |
Family
ID=42030928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200397275U Expired - Lifetime CN201427202Y (en) | 2009-04-29 | 2009-04-29 | Hexagonal shank twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201427202Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000842A (en) * | 2010-11-08 | 2011-04-06 | 福昌精密制品（深圳）有限公司 | Fiducial mark cutting tool of automatic lathe |
-
2009
- 2009-04-29 CN CN2009200397275U patent/CN201427202Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000842A (en) * | 2010-11-08 | 2011-04-06 | 福昌精密制品（深圳）有限公司 | Fiducial mark cutting tool of automatic lathe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU FEIDA BIT CO., LTD. Free format text: FORMER OWNER: JIANGSU FEIDA TOOLS CO., LTD. Effective date: 20100610 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 212312 GAOSHIQIAO DEVELOPMENT AREA, HOUXIANG TOWN, DANYANG CITY, JIANGSU PROVINCE TO: 212312 JIANGSU FEIDA DRILL CO., LTD., GAOSHIQIAO DEVELOPMENT ZONE, HOUXIANG TOWN, DANYANG CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100610 Address after: 212312 Danyang City, Jiangsu province Zhen gaoshiqiao Development Zone Jiangsu Feida bit Limited by Share Ltd Patentee after: Jiangsu Feida Drills Co., Ltd. Address before: 212312 Danyang City, Jiangsu province Zhen gaoshiqiao Development Zone Patentee before: Jiangsu Feida Tools Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |
|
| CX01 | Expiry of patent term |