CN206065500U - Counterbit - Google Patents
Counterbit Download PDFInfo
- Publication number
- CN206065500U CN206065500U CN201620641571.8U CN201620641571U CN206065500U CN 206065500 U CN206065500 U CN 206065500U CN 201620641571 U CN201620641571 U CN 201620641571U CN 206065500 U CN206065500 U CN 206065500U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- shank
- cutter hub
- counterbit
- relief angle
- 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
Landscapes
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a kind of counterbit, including shank and cutter hub, the shank side is connected with cutter hub side；The cutter hub includes drill bit, and the drill bit side is provided with square end surface, and the square end surface side is provided with arc cylinder；The arc cylinder side is connected with shank；The relief angle of the drill bit makes 10 °, and anterior angle makes 8 10 °, and the positioning blade band at the cylindrical place of the relief angle is not more than 0.05mm；This utility model low cost, production efficiency are high, the quality of production is good.
Description
Technical field
This utility model is related to machining tool, and in particular to a kind of counterbit.
Background technology
Counterbit be the end face of device to hole carry out plane, cylinder, the conical surface and its alloytype face processing, it is machined go out hole on process
When cylindrical counter sink, taper counter sink and end face boss, all using counterbit；Existing counterbit has many weak points, including brill
Head relief angle is selected, anterior angle is selected, step dimension is controlled etc.；Cause the product size for producing unqualified for these reasons, quality
Unstable the problems such as.
Utility model content
Utility model purpose：For the problem that prior art is present, this utility model provides a kind of low cost, efficiency
The good counterbit of the high, quality of production.
Technical scheme：Described counterbit, including shank and cutter hub, the shank side are connected with cutter hub side；The knife
Body includes drill bit, and the drill bit side is provided with circular end face, and the circular end face side is provided with arc cylinder；The arc cylinder side
It is connected with shank；The relief angle of the drill bit makes 10 °, and anterior angle makes 8-10 °, and the positioning blade band at the cylindrical place of the relief angle is not more than
0.05mm。
Specifically, the drill bit width is 3.5mm.
Specifically, the shank is provided with fixing groove.
Beneficial effect：Compared with prior art, the utility model has the advantage of：The counterbit increases by first when in use
Step and anterior angle, relief angle made by drill bit are controlled, particularly reduce relief angle, increased cylindrical place's mill relief angle and reserve
Positioning blade band, reduction cutter hub are produced in process and vibrate the big problem of the processing aperture change for causing.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the sectional view of A-A；
Fig. 3 is the sectional view of B-B.
Specific embodiment
With reference to the accompanying drawings and detailed description, further elucidate this utility model.
As Figure 1-3, a kind of counterbit, including shank 1 and cutter hub, connect on the left of shank 1 and on the right side of cutter hub, cutter hub bag
Drill bit 2, end face 3 and cylinder 4 are included, 2 side of drill bit is provided with end face 3, and end face 3 is circle, and 3 side of end face is provided with cylinder 4, cylinder
4 both sides are arc, and the side of arc cylinder 4 is connected with the left of shank 1, and 2 width of drill bit is 3.5mm, and the relief angle of drill bit 2 is made
10 °, anterior angle makes 8-10 °, and the positioning blade band at the cylindrical place of relief angle is not more than 0.05mm, and shank 1 is provided with fixing groove 5, and this is fixed
Groove 5 is used for fixing screws.
Claims (3)
1. a kind of counterbit, it is characterised in that：Including shank (1) and cutter hub, shank (1) side is connected with cutter hub side；Institute
Stating cutter hub includes drill bit (2), and the drill bit (2) side is provided with circular end face (3), and the circular end face (3) side is provided with arc cylinder
(4)；Arc cylinder (4) side is connected with shank (1)；The relief angle of the drill bit (2) makes 10 °, and anterior angle makes 8-10 °,
The positioning blade band at the cylindrical place of the relief angle is not more than 0.05mm.
2. counterbit according to claim 1, it is characterised in that：Drill bit (2) width is 3.5mm.
3. counterbit according to claim 1, it is characterised in that：The shank (1) is provided with fixing groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620641571.8U CN206065500U (en) | 2016-06-24 | 2016-06-24 | Counterbit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620641571.8U CN206065500U (en) | 2016-06-24 | 2016-06-24 | Counterbit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206065500U true CN206065500U (en) | 2017-04-05 |
Family
ID=58422208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620641571.8U Expired - Fee Related CN206065500U (en) | 2016-06-24 | 2016-06-24 | Counterbit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206065500U (en) |
-
2016
- 2016-06-24 CN CN201620641571.8U patent/CN206065500U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20180624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |