CN2133390Y - Twist drill with plastic handle - Google Patents
Twist drill with plastic handle Download PDFInfo
- Publication number
- CN2133390Y CN2133390Y CN 92214986 CN92214986U CN2133390Y CN 2133390 Y CN2133390 Y CN 2133390Y CN 92214986 CN92214986 CN 92214986 CN 92214986 U CN92214986 U CN 92214986U CN 2133390 Y CN2133390 Y CN 2133390Y
- Authority
- CN
- China
- Prior art keywords
- drill
- handle
- drill body
- taper
- processing
- 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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- Drilling Tools (AREA)
Abstract
The utility model discloses a new-style twist drill with plastic taper handle. A drill body extender section is coaxially fixed in a plastic taper drill handle. In the processing, the processing-well drill body and a processing-well tang are put into an injection mold, forming integration with the plastic taper drill handle of injection molding in the injection mold. The utility model has the advantages of easy production, low cost, low reject rate of drill heads and favorable effects of cutting and vibration absorption.
Description
The utility model belongs to metal-cutting machine tool and makes the field.
Compare with straight shank drill, conventional taper shank drill is except processing technology is more numerous, owing between drill body and taper shank higher axiality requirement is arranged, the qualification rate of product is lower, and this situation is particularly outstanding in the occasion of the taper shank drill of processing and fabricating minor diameter.The percent defective that general small instruments and tools factory produces No. 1 little taper shank drill of φ 6 following Mohs is about 30%, and percent defective is higher.In addition, because the drill body and the tang portion of conventional taper shank drill all use expensive tool steel to make, manufacturing cost is higher.
The purpose of this utility model is, overcomes the above shortcoming of prior art, designs the taper drill that a kind of novel sectional is made, make its have easy to manufacture, percent defective is low, advantage of low manufacturing cost.
The purpose of this utility model is to realize by following design.
Drill body extension and tang be securely fixed in mould in the bradawl handle, make drill body extension and plastomer drillstock have common axis.Connect with the fastening of toggle for increasing drill body, avoid drill body to produce loosening skidding in moulding the bradawl handle, the drill body extension is provided with the damping structure with on-circular cross-section.
After having adopted design as above, a kind of have that sectional makes mould taper drill and can make easily.General preparation method is that the staight shank portion of the straight shank drill that will process earlier mills out the damping structure, puts into the injection mould that processing moulds taper shank with the ordinary steel tang that processes then and carries out injection moulding processing, is integral with the bradawl petioliform of moulding of injection mo(u)lding in the mould.Owing to guaranteed the axiality of drill body and taper shank in the mould manufacturing, after injection moulding is finished mould the bradawl handle only need carry out behind an amount of centreless grinding product, production efficiency greatly improves.If substandard product occurs, can break up that drill body is taken out in the back and tang is reentered into injection mo(u)lding in the injection mould with moulding the bradawl handle in the processing, not scrap and do not resemble conventional bradawl, therefore percent defective of the present utility model is very low.On the other hand, owing to adopt the segmentation manufacturing, tang can make with the tool steel of ordinary steel rather than the expensive price the same with drill body, and production cost is reduced.
Description of drawings is as follows:
Accompanying drawing 1 is a front view of the present utility model.
Accompanying drawing 2 is partial sectional views of Fig. 1.
Accompanying drawing 3 is detail structure charts of damping structure.
Among Fig. 1, the 1st, drill body, the 2nd, tang, 3 for moulding the bradawl handle.
Among Fig. 2, drill body extension 4 and tang 2 are securely fixed in to be moulded in the bradawl handle 3, and extension 4, drillstock 3 have common axis, and the axis of tang 2 also overlaps with it.Drill body extension 4 is provided with the damping structure 5 with on-circular cross-section, Fig. 3 is the enforcement structure chart of damping structure, at this, the damping structure is actually and mills out some facets on the drill body extension, make extension 4 obtain some positions, in order to avoid drill body extension loosening skidding in moulding the bradawl handle when using with on-circular cross-section.During actual enforcement, the damping structure also can obtain by the alternate manner that makes the drill body extension produce the on-circular cross-section position.
Structure of the present utility model also can be applied to other occasion of demand taper shank structures such as reamer equivalently except can be used on the taper drill.
Claims (3)
1, a kind of taper drill is made of drill body and taper shank, it is characterized in that, drill body extension 4 and tang 2 are securely fixed in to be moulded in the bradawl handle 3, drill body extension 1 with mould bradawl handle 3 and have common axis.
2, the taper drill according to claim 1 is characterized in that, drill body extension 1 is provided with the damping structure 4 with on-circular cross-section.
3, the taper drill according to claim 1 is characterized in that, the described bradawl handle 3 moulded is made by engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214986 CN2133390Y (en) | 1992-07-22 | 1992-07-22 | Twist drill with plastic handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214986 CN2133390Y (en) | 1992-07-22 | 1992-07-22 | Twist drill with plastic handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2133390Y true CN2133390Y (en) | 1993-05-19 |
Family
ID=33763983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92214986 Expired - Fee Related CN2133390Y (en) | 1992-07-22 | 1992-07-22 | Twist drill with plastic handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2133390Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990138A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Hollow drill bit |
| CN102990134A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Compound drill |
| CN102990132A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Drill bit |
| CN102990135A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Improved hollow drill |
| CN102990133A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Composite drill bit |
| CN102990136A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Boring drill |
| CN103143749A (en) * | 2012-11-26 | 2013-06-12 | 苏州币龙装饰工程有限公司 | Improved type drill |
| CN105312635A (en) * | 2014-08-01 | 2016-02-10 | 王吉会 | Straight-shank antiskid drilling bit and universal antiskid drilling bit and skid prevention method thereof |
-
1992
- 1992-07-22 CN CN 92214986 patent/CN2133390Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990134B (en) * | 2012-11-26 | 2015-12-23 | 乐清市风杰电子科技有限公司 | A kind of composite drill bit |
| CN102990133A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Composite drill bit |
| CN102990138A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Hollow drill bit |
| CN102990135A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Improved hollow drill |
| CN105171064A (en) * | 2012-11-26 | 2015-12-23 | 胡小青 | Combined drill bit |
| CN102990136A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Boring drill |
| CN103143749A (en) * | 2012-11-26 | 2013-06-12 | 苏州币龙装饰工程有限公司 | Improved type drill |
| CN102990136B (en) * | 2012-11-26 | 2015-12-23 | 乐清市风杰电子科技有限公司 | Drill |
| CN102990132A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Drill bit |
| CN102990134A (en) * | 2012-11-26 | 2013-03-27 | 苏州币龙装饰工程有限公司 | Compound drill |
| CN102990133B (en) * | 2012-11-26 | 2015-12-23 | 乐清市风杰电子科技有限公司 | Composite drill bit |
| CN105195797A (en) * | 2012-11-26 | 2015-12-30 | 胡小青 | Improved composite drill bit with manufacturing cost effectively reduced |
| CN105195792A (en) * | 2012-11-26 | 2015-12-30 | 胡小青 | Improved composite drill bit realizing effective reduction of manufacturing cost |
| CN102990138B (en) * | 2012-11-26 | 2016-01-13 | 乐清市风杰电子科技有限公司 | Composite drill bit |
| CN102990135B (en) * | 2012-11-26 | 2016-02-03 | 乐清市风杰电子科技有限公司 | A kind of modified form composite drill bit |
| CN103143749B (en) * | 2012-11-26 | 2016-06-08 | 钱秀英 | Modified model drill bit |
| CN105312635A (en) * | 2014-08-01 | 2016-02-10 | 王吉会 | Straight-shank antiskid drilling bit and universal antiskid drilling bit and skid prevention method thereof |
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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 |