CN203900572U - Quick tail drilling screw - Google Patents
Quick tail drilling screw Download PDFInfo
- Publication number
- CN203900572U CN203900572U CN201420287863.7U CN201420287863U CN203900572U CN 203900572 U CN203900572 U CN 203900572U CN 201420287863 U CN201420287863 U CN 201420287863U CN 203900572 U CN203900572 U CN 203900572U
- Authority
- CN
- China
- Prior art keywords
- diameter
- tail
- quick
- drilling screw
- rear portion
- 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
Links
- 238000005553 drilling Methods 0.000 title abstract 7
- 238000010276 construction Methods 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a quick tail drilling screw which comprises a tail part (1), a rod part (2) and a drill bit part. The quick tail drilling screw is characterized in that the drill bit part is divided into a front part (4) and a rear part (3), the diameter of the rear part (3) is the same as the minor diameter of the thread of the rod part (2), the diameter of the front part (4) is smaller than the diameter of the rear part (3), and the front part (4) and the rear part (3) are in conical face transition. Compared with the prior art, due to the fact that the drill bit part is divided into the front part with the small diameter and the rear part with the large diameter, the diameter of the front part is small, hole drilling is easy and saving in energy, although the diameter of the rear portion is the same as the diameter of a common tail drilling screw, the quick tail drilling screw is only used for broaching, and accordingly labor is relatively saved. Accordingly, the overall effect of the quick tail drilling screw is quick, saving in labor and time and high in construction efficiency.
Description
Technical field
The utility model relates to a kind of tailfiber that bores, and the anterior diameter of especially a kind of drill bit is less than the quick drill tailfiber of rear portion diameter.
Background technology
At present, the diameter of the bit head of commercially available brill tailfiber is identical with the screw thread path of bar portion, when boring effort and the used time longer, inefficiency, especially, in the time of work high above the ground, because workmen can not fully exert oneself, efficiency of construction is lower.Therefore, a kind of efficient, labour-saving quick drill tailfiber of design, is the current technical issues that need to address.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of efficient, labour-saving quick drill tailfiber.
The technical scheme in the invention for solving the technical problem is:
Quick drill tailfiber, comprises afterbody, bar portion and bit head, and bit part is front and rear, and the diameter at rear portion is identical with the screw thread path of bar portion, and anterior diameter is less than the diameter at rear portion, and the front and rear conical surface is excessive.Afterbody is hexagonal tail, circular tail, square tail, countersunk head tail.
As a kind of preferred version of the present utility model, anterior diameter is the 1/2-3/4 of rear portion diameter.
As a kind of preferred plan of the present utility model, anterior diameter is 1/2 of rear portion diameter.
Compared with prior art, because bit head of the present utility model is divided into again front portion and the large rear portion of diameter that diameter is little, anterior diameter is little, hole easy, laborsaving, although rear portion diameter is identical with common brill tailfiber diameter, it is for reaming, relatively laborsaving, therefore, general effect of the present utility model is quick, laborsaving, save time, and efficiency of construction is high.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in the figure, quick drill tailfiber, comprises afterbody 1, bar portion 2 and bit head, and bit part is front portion 4 and rear portion 3, and the diameter at rear portion 3 is identical with the screw thread path of bar portion 2, and anterior 4 diameter is less than the diameter at rear portion 3, and front portion 4 and rear portion 3 conical surfaces are excessive.
Anterior 4 diameter is the 1/2-3/4 of rear portion 3 diameters.
Anterior 4 diameter is 1/2 of rear portion 3 diameters.
Afterbody 1 is hexagonal tail, circular tail, square tail, countersunk head tail.
Claims (4)
1. quick drill tailfiber, comprise afterbody (1), bar portion (2) and bit head, it is characterized in that, bit part is anterior (4) and rear portion (3), the diameter at rear portion (3) is identical with the screw thread path of bar portion (2), the diameter of anterior (4) is less than the diameter of rear portion (3), and anterior (4) and rear portion (3) conical surface are excessive.
2. quick drill tailfiber according to claim 1, is characterized in that, the diameter of anterior (4) is the 1/2-3/4 of rear portion (3) diameter.
3. quick drill tailfiber according to claim 2, is characterized in that, the diameter of anterior (4) is 1/2 of rear portion (3) diameter.
4. quick drill tailfiber according to claim 1, is characterized in that, afterbody (1) is hexagonal tail, circular tail, square tail, countersunk head tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420287863.7U CN203900572U (en) | 2014-05-26 | 2014-05-26 | Quick tail drilling screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420287863.7U CN203900572U (en) | 2014-05-26 | 2014-05-26 | Quick tail drilling screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203900572U true CN203900572U (en) | 2014-10-29 |
Family
ID=51774863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420287863.7U Expired - Lifetime CN203900572U (en) | 2014-05-26 | 2014-05-26 | Quick tail drilling screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203900572U (en) |
-
2014
- 2014-05-26 CN CN201420287863.7U patent/CN203900572U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202963682U (en) | Cutter used for machining of threaded hole | |
| CN203900572U (en) | Quick tail drilling screw | |
| CN202571412U (en) | Double-end self-centering tungsten steel drill | |
| CN203470706U (en) | Improved reamer | |
| CN203900659U (en) | Drilling-tapping integrated combined tap | |
| CN102678720A (en) | Bolt | |
| CN202506877U (en) | Cone-shaped countersink drill | |
| CN203390053U (en) | Removable type combined cutting tool | |
| CN204565228U (en) | A kind of hard alloy steel tapering drill bit | |
| CN204326984U (en) | A kind of drilling rod | |
| CN202239817U (en) | Three-edge tapered twist drill | |
| CN203610737U (en) | Multistage drill bit | |
| CN204673023U (en) | Composite multipurpose drill bit | |
| CN102847993A (en) | Three-edge taper twist drill | |
| CN204449428U (en) | Chip-removal drill bit in a kind of | |
| CN204893056U (en) | Novel big chip removal bulb milling cutter of twolip | |
| CN203863088U (en) | Drilling bit fixture for digital controlled lathe | |
| CN203330467U (en) | Drill bit quick to replace | |
| CN203702053U (en) | Guide cone | |
| CN204053539U (en) | A kind of ball cage positioning tool | |
| CN203956718U (en) | Knife sharpener planker | |
| CN203765044U (en) | Drill bit for wind coal drill | |
| CN203347691U (en) | Square-head forged piece | |
| CN203170993U (en) | Split type cutter | |
| CN203702203U (en) | Anchor rod and special tool thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |