CN201505753U - Small diameter drill bit break-proof elastic supporting sleeve - Google Patents
Small diameter drill bit break-proof elastic supporting sleeve Download PDFInfo
- Publication number
- CN201505753U CN201505753U CN2009201785117U CN200920178511U CN201505753U CN 201505753 U CN201505753 U CN 201505753U CN 2009201785117 U CN2009201785117 U CN 2009201785117U CN 200920178511 U CN200920178511 U CN 200920178511U CN 201505753 U CN201505753 U CN 201505753U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- small diameter
- elastic supporting
- diameter drill
- supporting sleeve
- 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
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Abstract
The utility model relates to a small diameter drill bit break-proof elastic supporting sleeve, and belongs to the field of mechanical manufacture frocks. Through slots are symmetrically arranged on the tail portion of an elastic supporting sleeve of the utility model along the central hole diameter direction. Since small diameter drill bit elastic supporting sleeves are installed on a drill clamp head, when the small diameter drill bit is used for manufacture, the drill bit clamp head can be interfered with components and can generate collision easily, and the elastic supporting sleeve plays a reinforcing role to the extending part of the small diameter drill bit to prevent the hole guiding deviation to generate breaking of the drill bit. The small diameter drill bit break-proof elastic supporting sleeve has simple and compact structure and convenient use.
Description
One, technical field
The utility model relates to the anti-breaking resiliency supported cover of a kind of minor diameter drill bit, belongs to machining frock field.
Two, background technology
When using the part of some special construction of minor diameter drill bit (diameter is less than 4mm) drilling in the market, interfere bump (diagram interference region A), the minor diameter drill bit need be stretched out longer for preventing drill bushing and part.Minor diameter drill bit extending area is equivalent to elongate rod, under the effect of rotary cutting power, produces very big moment of torsion when drilling, and intensity descends, and causes the hole to be drawn partially, and drill bit is disconnected can't to be taken out in hole in piece part; Particularly when cutting data was excessive, the drill bit frangibility caused working (machining) efficiency low, and processing cost rises.
Three, summary of the invention
The purpose of this utility model is to provide a kind of hole that can prevent to draw local derviation and cause drill bit and fracture the anti-breaking resiliency supported cover of simple in structure, compact minor diameter drill bit.
Technical scheme is: the afterbody of the utility model resiliency supported cover is arranged with groove along the center-hole diameter direction.
The utility model is owing to be equipped with minor diameter drill bit resiliency supported cover on drill chuck, therefore add man-hour when the minor diameter drill bit, and the resiliency supported cover plays booster action to minor diameter drill bit extending area, prevents that the hole from drawing local derviation and causing drill bit and fracture.The utility model is simple in structure, compact, and is easy to use.
Four, description of drawings
Fig. 1 is the utility model resiliency supported nested structure schematic diagram;
Fig. 2 is the utility model tool structure schematic diagram.
Five, the specific embodiment
Pack in the centre bore 5 of resiliency supported cover 2 referring to Fig. 1 the utility model minor diameter drill bit 1, wherein on the resiliency supported cover 2 groove 3 on the diametric(al) is arranged, axially not open-minded fully.
It is that tapering is convenient to chip removal cooling that resiliency supported is overlapped 2 head design, and increase elasticity just with in clamping.
Centre bore 5 diameters are than the institute's drill bit of adorning 1 slightly larger in diameter, can with the little matched in clearance of minor diameter drill bit 1 maintenance, be convenient to install drill bit 1.Centre bore 4 overlaps 2 axis along resiliency supported and connects.
The utility model is arranged with groove 3 owing to overlap 2 centre bores, 5 diametric(al)s in resiliency supported, and this groove closure clamped drill bit 1 when groove 3 effects were clamp operation.
The utility model is in when work, and minor diameter drill bit 1 is packed in the centre bore 5 of resiliency supported cover 2, because centre bore 5 is little matched in clearance with minor diameter drill bit drill bit 1, institute is resiliency supported cover 2 so that minor diameter drill bit 1 is packed into fast, easily.The resiliency supported cover 2 that will install minor diameter drill bit 1 is again packed on the drill chuck 4, drill chuck 4 clamps resiliency supported cover 2, groove 3 on the resiliency supported cover 2 is closed under the clamping force of drill chuck 4 simultaneously, minor diameter drill bit 1 is clamped, so booster action is played in 2 pairs of minor diameter drill bit 1 extending areas of resiliency supported cover, thereby has played the effect that prevents that minor diameter drill bit 1 from fractureing.(see figure 2)
Claims (1)
1. the anti-breaking resiliency supported cover of minor diameter drill bit, it is characterized in that: the afterbody at resiliency supported cover (2) is arranged with groove (3) along centre bore (5) diametric(al).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201785117U CN201505753U (en) | 2009-09-27 | 2009-09-27 | Small diameter drill bit break-proof elastic supporting sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201785117U CN201505753U (en) | 2009-09-27 | 2009-09-27 | Small diameter drill bit break-proof elastic supporting sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201505753U true CN201505753U (en) | 2010-06-16 |
Family
ID=42466888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201785117U Expired - Fee Related CN201505753U (en) | 2009-09-27 | 2009-09-27 | Small diameter drill bit break-proof elastic supporting sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201505753U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331462A (en) * | 2013-07-08 | 2013-10-02 | 潍坊凯动动力机械有限公司 | Device for drilling tappet hole of engine body |
| CN107225273A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of anti-fracture high-speed steel straight shank twist drill |
-
2009
- 2009-09-27 CN CN2009201785117U patent/CN201505753U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331462A (en) * | 2013-07-08 | 2013-10-02 | 潍坊凯动动力机械有限公司 | Device for drilling tappet hole of engine body |
| CN107225273A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of anti-fracture high-speed steel straight shank twist drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20150927 |
|
| EXPY | Termination of patent right or utility model |