CN201249310Y - Screw tap for tapping - Google Patents
Screw tap for tapping Download PDFInfo
- Publication number
- CN201249310Y CN201249310Y CNU2008201250733U CN200820125073U CN201249310Y CN 201249310 Y CN201249310 Y CN 201249310Y CN U2008201250733 U CNU2008201250733 U CN U2008201250733U CN 200820125073 U CN200820125073 U CN 200820125073U CN 201249310 Y CN201249310 Y CN 201249310Y
- Authority
- CN
- China
- Prior art keywords
- screw tap
- tapping
- guide head
- cone
- screw
- 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
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Aiming at the phenomena of screw inclination, screw tap breaking, workpiece damage, and the like which are caused by the fact that existing screw taps cannot ensure the concentricity between the screw taps and tapped inner round orifices during the use, the utility model discloses a screw tap for tapping which comprises a cone which is provided with screw threads and a cuttings shoot. The front end of the cone of the screw tap is provided with a guide head, and the screw tap for tapping is characterized in that the guide head is a non-tapered guide head.
Description
Technical field
The utility model discloses a kind of tapping screw tap, can extensively use in the internal circular hole tapping of field of machining.
Background technology
In field of machining, internally the circular hole tapping is very common manufacturing procedure.The known screw tap that is used for internal circular hole tapping includes cone, is shaped on Si Ya and flute on cone, is the band tapering at the front end of wire cone.This existing screw tap in use has following defective: because the cone front end is the guide head of band tapering, and the concentricity of circular hole in therefore can not guaranteeing screw tap and be threaded; Need on lathe, lead directly tapping again, otherwise when tapping, often cause oblique silk mouthful, not only difficult operation during tapping, but also the phenomenon that causes the fracture of wire awl, damages workpiece.
Summary of the invention
In use there is the concentricity that can not guarantee screw tap and be threaded interior circular hole at existing screw tap, tiltedly phenomenons such as silk, fracture of wire awl, breaking-up workpiece appear when causing tapping, the utility model discloses a kind of tapping screw tap, with the internally round tapping of this tapping screw tap, the concentricity of circular hole in guaranteeing screw tap and being threaded, can not occur oblique mouthful, not only easy to operate during tapping, and the phenomenon of can not cause the fracture of wire awl, damaging workpiece, also straight without the lathe neck, reduce operation sequence.
Taked following technical scheme for realizing the purpose of this utility model:
Make a kind of tapping screw tap, this tapping screw tap includes cone, is shaped on Si Ya and flute on cone, and screw tap cone front end is equipped with guide head, and this guide head is the guide head of non-tapering.
The guide head of the guide head of screw tap being made non-tapering gets final product, thereby the utility model is very easy to realize.
Characteristics of the present utility model are simple in structure, and are easy to manufacture, use easy to maintenancely, are easy to promote; Do not occur oblique silk when its remarkable advantage is tapping, the phenomenon of can not cause the fracture of wire awl, damaging workpiece guarantees workpiece quality, enhances productivity.
Description of drawings
Further describe technical characterictic of the present utility model below in conjunction with accompanying drawing:
The partial structurtes schematic diagram of Fig. 1, an embodiment of the utility model;
The side-looking structural representation of Fig. 2, embodiment Fig. 1;
The partial structurtes schematic diagram of Fig. 3, existing tapping screw tap,
Among the figure: 1, flute 2, silk tooth 3, guide head
The specific embodiment
As shown in Figure 1 and Figure 2, on the cone of tapping screw tap, be shaped on flute 1 and Si Ya 2, the front end of screw tap cone is made and concentric not the getting final product with the guide head of tapering of screw tap cone.
During use,, carry out tapping according to traditional tapping technology and get final product not inserting in the hole that is threaded with the guide head of tapering.
Because guide head is concentric and be not with tapering with the screw tap cone, has therefore guaranteed the screw tap cone and has been threaded the concentricity in hole, thereby guaranteed the quality of processing work.
Claims (1)
1, a kind of tapping screw tap, this tapping screw tap includes cone, is shaped on a tooth (2) and flute (1) on cone, and screw tap cone front end is equipped with guide head (3), it is characterized in that: the guide head of described tapping screw tap (3) is the guide head of non-tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201250733U CN201249310Y (en) | 2008-07-21 | 2008-07-21 | Screw tap for tapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201250733U CN201249310Y (en) | 2008-07-21 | 2008-07-21 | Screw tap for tapping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201249310Y true CN201249310Y (en) | 2009-06-03 |
Family
ID=40744982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201250733U Expired - Fee Related CN201249310Y (en) | 2008-07-21 | 2008-07-21 | Screw tap for tapping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201249310Y (en) |
-
2008
- 2008-07-21 CN CNU2008201250733U patent/CN201249310Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Cao Shengrong Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Cao Shengrong Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20110721 |