CN2743067Y - Multiflap hole expansion drill - Google Patents
Multiflap hole expansion drill Download PDFInfo
- Publication number
- CN2743067Y CN2743067Y CN 200420063648 CN200420063648U CN2743067Y CN 2743067 Y CN2743067 Y CN 2743067Y CN 200420063648 CN200420063648 CN 200420063648 CN 200420063648 U CN200420063648 U CN 200420063648U CN 2743067 Y CN2743067 Y CN 2743067Y
- Authority
- CN
- China
- Prior art keywords
- knife rest
- outer tube
- utility
- model
- cutter head
- 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
A multiflap hole expansion drill of the utility model relates to a drill. The exiting expansion drills exist the defects of complicated structure, not easily processing and easily damaged while in use. A blade holder (1) of the utility model is equipped with a slot (1-1); a blade head (2) is arranged in the slot (1-1) and is connected with the blade holder (1) through a shaft (3); the center of the (1) is equipped with an axial through hole (1-3); a small step (1-2) which is projected outward is arranged at the other end of the blade holder (1) corresponding to the blade head (2); the outside of the blade holder (1) is equipped with an outer tube (4) the internal ring of which is adapted to the outer ring of the small step (1-2); a spring (5) is arranged between the inner chamber of the outer tube (4) and the outer ring of the blade holder (1). The utility model has simple structure, easy processing, and the drilling and the expanding of the holes can be finished at one time with advantages of construction time saving, operational safety, and the utility model is not easy to be damaged.
Description
Technical field:
The utility model relates to a kind of drill bit.
Background technology:
At present, be extensive use of expansion bolt in the building installation engineering, expansion bolt commonly used comprises screw rod, is enclosed within the nut of described screw rod outside, the screw rod bottom has tapering, expander mounting tube on screw rod, pass through clamp nut, the pulling screw rod, the extrusion expansion pipe makes the expansion tube distending, rely on the friction fixed object of expansion tube and installing hole, this expansion bolt skids easily, and is fixing firm inadequately, uses inconvenient, and the installing hole that gets out of employed drill bit is cylindrical, can not meet the needs of the installing hole of special shape.And the existing reaming bit that can expand the flue shape to installing hole in use, must on workpiece, have openning hole earlier, and then carry out reaming, this has just increased the operation process, reduced operating efficiency, and existing reaming bit exists complex structure, difficult processing, the easy drawback of damaging when using more.
The utility model content:
The purpose of this utility model is to provide a kind of perforating, boring once to finish and many lobes reaming bit simple in structure, it comprises knife rest 1, is arranged on the cutter head 2 on the knife rest 1, knife rest 1 is provided with groove 1-1, described cutter head 2 is arranged in the groove 1-1 and is connected with knife rest 1 by axle 3, and the center of described knife rest 1 is provided with axially extending bore 1-3; Be provided with the small stair 1-2 of outside protrusion with the cutter head 2 corresponding other ends on knife rest 1, be with outer tube 4 in the outside of knife rest 1, the interior ring of outer tube 4 and the outer shroud of small stair 1-2 adapt, and between the outer shroud of the inner chamber of outer tube 4 and knife rest 1 spring 5 are housed.The utility model is simple in structure, and processing easily can once be finished boring, reaming when work, saved the engineering time greatly, and handling safety is reliable, and is not fragile, is beneficial to and applies.
Description of drawings:
Fig. 1 is a vertical view of the present utility model, and Fig. 2 is the A-A cutaway view of Fig. 1.
The specific embodiment:
Present embodiment comprises knife rest 1, is arranged on the cutter head 2 on the knife rest 1, and the quantity of cutter head 2 is three to five, is provided with groove 1-1 on knife rest 1, and described cutter head 2 is arranged in the groove 1-1 and is connected with knife rest 1 by axle 3, and the center of described knife rest 1 is provided with axially extending bore 1-3; On knife rest 1, be provided with the small stair 1-2 of outside protrusion with the cutter head 2 corresponding other ends, be with outer tube 4 in the outside of knife rest 1, the interior ring of outer tube 4 and the outer shroud of small stair 1-2 adapt, between the outer shroud of the inner chamber of outer tube 4 and knife rest 1, spring 5 is housed, be provided with fixed support 6 in the inside of outer tube 4, the lower end of knife rest 1, the center of fixed support 6 also is provided with the axially extending bore 6-1 that is connected with knife rest through hole 1-3.
The course of work of the present utility model is as follows: at first, drill bit of the present utility model is connected with throw, under the drive of throw, the cutter head 2 of chisel edge can begin boring on workpiece, when hole drill arrives to a certain degree, the pressure rod 7 that control is arranged in the central through hole 1-3 advances, the pressure rod 7 that advances promptly can strut cutter head 2 in centre bore laterally, at this moment, under the drive of rotating instrument, promptly can gradually the hole be enlarged to extending out the cutter head of holding 2 gradually, thereby realize boring, the one step completed purpose of reaming.Spring in outer tube 4 chambeies can guarantee to play the effect of buffering when cutter head 2 meets obstructions, can avoid the damage of cutter head like this; Be provided with fixed support 6 in the lower end of knife rest 1, the center of fixed support 6 is provided with axially extending bore 6-1, the instrument that axially extending bore 6-1 can guarantee to extend in the knife rest centre bore can not change direction in work, stressed evenly to guarantee each cutter head, with the purpose of better realization boring, reaming.
Claims (3)
1. lobe reaming bit more than a kind, it comprises knife rest (1), is arranged on the cutter head (2) on the knife rest (1), it is characterized in that knife rest (1) is provided with groove (1-1), described cutter head (2) is arranged in the groove (1-1) and by axle (3) and is connected with knife rest (1), and the center of described knife rest (1) is provided with axially extending bore (1-3); Go up and the corresponding other end of cutter head (2) is provided with the small stair (1-2) of outside protrusion at knife rest (1), be with outer tube (4) in the outside of knife rest (1), the outer shroud of the interior ring of outer tube (4) and small stair (1-2) adapts, and between the outer shroud of the inner chamber of outer tube (4) and knife rest (1) spring (5) is housed.
2. many lobes reaming bit according to claim 1, the quantity that it is characterized in that described cutter head (2) are three to five.
3. many lobes reaming bit according to claim 1 and 2, it is characterized in that the inside in outer tube (4), the lower end of knife rest (1) are provided with fixed support (6), fixed support) center of (6) also is provided with the axially extending bore (6-1) that is connected with knife rest through hole (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420063648 CN2743067Y (en) | 2004-10-26 | 2004-10-26 | Multiflap hole expansion drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420063648 CN2743067Y (en) | 2004-10-26 | 2004-10-26 | Multiflap hole expansion drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2743067Y true CN2743067Y (en) | 2005-11-30 |
Family
ID=35633088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420063648 Expired - Fee Related CN2743067Y (en) | 2004-10-26 | 2004-10-26 | Multiflap hole expansion drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2743067Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105764326A (en) * | 2013-09-27 | 2016-07-13 | 汉森出版公司 | Substance introduction method for plant and plant obtained therewith |
| CN108044804A (en) * | 2017-11-17 | 2018-05-18 | 绿城装饰工程集团有限公司 | A kind of back taper reaming alloy bit |
-
2004
- 2004-10-26 CN CN 200420063648 patent/CN2743067Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105764326A (en) * | 2013-09-27 | 2016-07-13 | 汉森出版公司 | Substance introduction method for plant and plant obtained therewith |
| CN108044804A (en) * | 2017-11-17 | 2018-05-18 | 绿城装饰工程集团有限公司 | A kind of back taper reaming alloy bit |
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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 |