CN2306097Y - Internal eccentric knife for trepanning - Google Patents
Internal eccentric knife for trepanning Download PDFInfo
- Publication number
- CN2306097Y CN2306097Y CN 97216773 CN97216773U CN2306097Y CN 2306097 Y CN2306097 Y CN 2306097Y CN 97216773 CN97216773 CN 97216773 CN 97216773 U CN97216773 U CN 97216773U CN 2306097 Y CN2306097 Y CN 2306097Y
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- China
- Prior art keywords
- knife
- handle
- utility
- model
- diameter
- 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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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model relates to an internal eccentric knife for opening holes, which uses eccentric quantity of an inner hole and an outer diameter to reduce the diameter of waste material which is cut, and thus, the waste material can be automatically discharged. Big holes can be processed on metallic and nonmetallic materials with certain thickness by using the utility model; the utility model is especially suitable for opening big holes on thin-wall pipes, and the advantage of the utility model is obvious under the condition that a hole diameter is approximately equal to a pipe diameter. A knife body is sheathed with a knife handle, a positive cone centering drill head is inserted into an inner hole of the knife handle, and a top thread which is pressed on the knife handle of the positive cone centering drill head is arranged on the handle wall of the knife handle. The internal eccentric knife for opening holes has the characteristics of simple structure, convenient manufacture and improved work efficiency.
Description
The utility model is a kind of machining cutting tool.
Because internal diameter and external diameter are concentric types, there is one shortcoming in existing hole making drill, be exactly hole of every brill after because quilt is cut the waste material diameter and the cutter hub internal diameter equates, so can cause cut waste material must be stuck in the cutter hub, can not withdraw automatically.At this moment, must turn round by arrestment, the waste material in the cutter hub is withdrawed from machinery or other method.And then starting device, process next hole.Be exactly in working angles in addition, because the waste material equal diameters is cut with quilt in the aperture, waste material and hole wall are in working angles, and friction generates heat for both, and cutter hub is heated up, and have a strong impact on cutter life.
The centering type boring cutter was to solve the defective that prior art exists in the purpose of this utility model was to provide, and this knife structure is made up of positive cone pilot bit, interior centering type cutter hub, jackscrew and handle of a knife.
Fig. 1 is the utility model structural representation
Fig. 2 is the side view of Fig. 1
Describe in detail below in conjunction with accompanying drawing, cutter hub 2 is connected with handle of a knife 4 suits, and positive cone pilot bit 1 is inserted in the handle of a knife 4 The hole, handle of a knife 4 handle walls are provided with a jackscrew, on roof pressure positive cone pilot bit 1 handle of a knife. Positive cone pilot bit head is positive cone Body.
Embodiment: interior centering type boring cutter is the very desirable cutter of a kind of result of use.Should interior centering type boring cutter be a kind of broad-spectrum perforate cutter.Be adapted at opening (brill) large diameter hole on certain thickness metal and the nonmetal thin material, particularly open (brill) large diameter hole on the light-wall pipe of different shape, effect is more outstanding under the approaching condition of aperture and caliber.Solved a difficult problem of opening (brill) large diameter hole in the past on 1-4 millimeter thin plate and the light-wall pipe.
This boring cutter is to utilize the offset of hole and external diameter to solve the problem of the material returned automatically, its principle is: because the external diameter of boring cutter is concentric with handle of a knife, internal diameter and external diameter have off-centre to crouch, and cutter hub makes by the offset of the whole waste material diameter after cutting than the little twice of cutter hub internal diameter in working angles.Therefore, waste material can not be stuck in the offset of the little twice of cutter hub internal diameter.Therefore, waste material can not be stuck in the cutter hub, must withdraw from automatically.
Characteristics such as this cutter has simple in structurely, is convenient to make, and the scope of application is wide.Compare with existing boring cutter, can improve work efficiency.And cooling performance is good, and cutter life is long.Its off-centre x that crouches is 0.3～1.00mm, and perforate footpath D is 20-80mm, aperture rule, bright and clean.
This boring cutter can be opened (brill) large diameter hole on the special section tubular product of various geometries and certain thickness (1-4 millimeter) sheet material.
Claims (3)
1. centering type boring cutter in a kind comprises that pilot bit, cutter hub, handle of a knife constitute, and it is characterized in that: cutter hub 2 is connected with handle of a knife 4 suits, positive cone pilot bit 1 insertion handle of a knife 4 endoporus, and handle of a knife 4 handle walls are provided with a jackscrew, on roof pressure positive cone pilot bit 1 handle of a knife.
2. centering type boring cutter in according to claim 1, it is characterized in that: positive cone pilot bit head is a right circular cone; The off-centre X that crouches is 0.3～1.0mm; Its perforate footpath D is 20～80mm.
3. centering type boring cutter in according to claim 1 is characterized in that: the machining that is used for 1-4mm metal or non-metal board and metal or nonmetal thin-wall pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216773 CN2306097Y (en) | 1997-06-11 | 1997-06-11 | Internal eccentric knife for trepanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216773 CN2306097Y (en) | 1997-06-11 | 1997-06-11 | Internal eccentric knife for trepanning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2306097Y true CN2306097Y (en) | 1999-02-03 |
Family
ID=33933589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97216773 Expired - Fee Related CN2306097Y (en) | 1997-06-11 | 1997-06-11 | Internal eccentric knife for trepanning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2306097Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411785C (en) * | 2006-01-04 | 2008-08-20 | 王中华 | Ring-cutting knife |
| CN1663732B (en) * | 2004-03-04 | 2011-05-11 | 斯图尔特·巴克曼 | Mortiser tool |
| CN101722321B (en) * | 2009-10-16 | 2012-02-01 | 天津泰邦管材有限公司 | Large-diameter plastic pipe punching and cutting device |
-
1997
- 1997-06-11 CN CN 97216773 patent/CN2306097Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663732B (en) * | 2004-03-04 | 2011-05-11 | 斯图尔特·巴克曼 | Mortiser tool |
| CN100411785C (en) * | 2006-01-04 | 2008-08-20 | 王中华 | Ring-cutting knife |
| CN101722321B (en) * | 2009-10-16 | 2012-02-01 | 天津泰邦管材有限公司 | Large-diameter plastic pipe punching and cutting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |