CN201239908Y - Millcourse head for screw - Google Patents
Millcourse head for screw Download PDFInfo
- Publication number
- CN201239908Y CN201239908Y CNU2007201572728U CN200720157272U CN201239908Y CN 201239908 Y CN201239908 Y CN 201239908Y CN U2007201572728 U CNU2007201572728 U CN U2007201572728U CN 200720157272 U CN200720157272 U CN 200720157272U CN 201239908 Y CN201239908 Y CN 201239908Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- screw
- notch
- grinding head
- 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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- Polishing Bodies And Polishing Tools (AREA)
Abstract
The utility model discloses a notch grinding head used for a bolt. A rigid dressing gear is installed on the head of a drill stem, and the thickness of the dressing gear equals to the width of a bolt notch; and the notch grinding head is similar to a drill bit and is arranged on an electric drill when in use, and renewedly deepens the original notch on a bolt cap through the rigid dressing gear, to be beneficial for screwing off the bolt successfully by using a screwdriver. The notch grinding head solves the problem that the bolt is hard to screw off successfully after the bolt notch is frayed and eliminates the trouble that the bolt is hard to dismount for people.
Description
Technical field
The utility model relates to the instrument of repairing the screw groove.
Background technology
Screw is the necessary article that objects such as machinery, instrument, furniture connect.Sometimes need a certain screw repeated disassembled and assembled, the time has been grown or has become rusty after death, is destroyed original groove by screwdriver easily, makes screwdriver ineffective, and it is very difficult to want to back out this screw.
Summary of the invention
The utility model proposes a kind of slot grinding head that is used for screw for solving the problem that destroyed groove screw is difficult to back-out.
The structure of this screw slot grinding head is that the head at drilling rod is equipped with the hard dressing, and the thickness of dressing equals the width of screw groove.
Its good effect is that the similar drill bit of this slot grinding head is contained in during use on the electric drill, deepens former groove again by the hard dressing on screw cap, is beneficial to screwdriver screw successfully be screwed down.Utilize this slot grinding head to solve the problem that is difficult to back-out smoothly after the screw groove is worn, eliminated the worry that people are difficult to unload screw.
Description of drawings
Fig. 1 is a structural map of the present utility model.
Among the figure 1---drilling rod, 2---the hard dressing.
The specific embodiment
As can be seen from Figure 1, this slot grinding head is that the head at drilling rod 1 is equipped with hard dressing 2, requires the thickness of dressing 2 to equal the width of screw groove.
Claims (1)
1, a kind of slot grinding head that is used for screw is characterized in that, it is that head at drilling rod is equipped with the hard dressing, and the thickness of dressing equals the width of screw groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201572728U CN201239908Y (en) | 2007-11-14 | 2007-11-14 | Millcourse head for screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201572728U CN201239908Y (en) | 2007-11-14 | 2007-11-14 | Millcourse head for screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201239908Y true CN201239908Y (en) | 2009-05-20 |
Family
ID=40713199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201572728U Expired - Fee Related CN201239908Y (en) | 2007-11-14 | 2007-11-14 | Millcourse head for screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201239908Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862108A (en) * | 2012-09-12 | 2013-01-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Grinding method for processing cobalt-chromium-tungsten coating by diamond grinding wheel |
-
2007
- 2007-11-14 CN CNU2007201572728U patent/CN201239908Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862108A (en) * | 2012-09-12 | 2013-01-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Grinding method for processing cobalt-chromium-tungsten coating by diamond grinding wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20091214 |