CN207343848U - Chip removal drill bushing - Google Patents
Chip removal drill bushing Download PDFInfo
- Publication number
- CN207343848U CN207343848U CN201721147063.5U CN201721147063U CN207343848U CN 207343848 U CN207343848 U CN 207343848U CN 201721147063 U CN201721147063 U CN 201721147063U CN 207343848 U CN207343848 U CN 207343848U
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- China
- Prior art keywords
- drill bushing
- hole
- chip
- removal
- drill
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Abstract
The utility model provides a kind of chip removal drill bushing, belongs to drilling machine frock field, it includes drill bushing cap and drill bushing bar, be provided with drill bushing axially through through hole, through hole is provided at both ends with chamfering.Pressing table is provided with drill bushing cap and its outer surface is provided with annular knurl, position on the lower side is provided with chip-removal hole in the middle part of drill bushing bar, and chip-removal hole is connected with through hole.Drill bushing cap and drill bushing bar junction set fluted.The through hole in iron filings blocking drill bushing is avoided, so as to avoid finished surface and the drill bit that fractures is damaged after iron filings congestion.
Description
Technical field
Drilling machine frock field is the utility model is related to, more particularly to a kind of chip removal drill bushing.
Background technology
The effect of drill bushing, is primarily used to determine the axial location that drill bit, reamer, reamer etc. are sized cutter, drill bushing
Meaning be that he can position and guide cutter to be processed, so as to improve the precision of processing.According to handling characteristics, drill bushing tool
There are three kinds of fixed drill bushing, Quick-change drill bush and renewable bushing forms, in use, if drill bushing need not be replaced, with fixation
Drill bushing is relatively inexpensive, and the positional precision of drilling is also higher；When processed hole need to be bored successively, be expanded, cut with scissors when due to cutter diameter
Gradual increase, should using outside diameter is identical and drill bushing that internal diameter is different guides cutter, at this moment can reduce replacement using Quick-change drill bush
The time of drill bushing；When production batch is larger, it is necessary to when replacing the drill bushing of abrasion, then more convenient with renewable bushing, renewable bushing
In bushing, bushing is pressed directly into the bottom outlet of bushing plate, after drill bushing is worn, can unload the drill bushing that screw more renews,
Screw can also prevent that drill bushing rotates during processing or drill bushing is extracted with cutter during withdrawing.
Drill bushing chip removal of the prior art is mainly carried out by staying a space between drill bushing bottom and workpiece surface
Chip removal.It if this space Liu get Tai is big, can increase the deflection of drill bit, influence to be processed the positional precision in hole；This is empty
Between if Liu get Tai is small, chip discharge is difficult, can damage finished surface, or even be also possible to the drill bit that fractures.
Utility model content
For the above problem of the prior art, the utility model provides a kind of chip removal drill bushing, solves existing drill bushing
Chip removal is bad can damage finished surface even fracture drill bit the problem of.
In order to reach foregoing invention purpose, the technical solution adopted in the utility model is as follows：
A kind of chip removal drill bushing is provided, it includes drill bushing cap and drill bushing bar, be provided with drill bushing axially through through hole, lead to
Hole is provided at both ends with chamfering.Pressing table is provided with drill bushing cap and its outer surface is provided with annular knurl, the position on the lower side in the middle part of drill bushing bar
Install and be equipped with chip-removal hole, chip-removal hole is connected with through hole.Drill bushing cap and drill bushing bar junction set fluted.
Further, drill bushing cap includes superposed bigger diameter end and the miner diameter end positioned at lower part, miner diameter end and drill bushing bar
Connection, annular knurl are arranged on the outer surface of bigger diameter end.
Further, pressing table includes the first notch and the second notch, the whole drill bushing cap of depth penetration of the first notch
Thickness, the thickness of the whole bigger diameter end of depth penetration of the second notch.
Further, annular knurl is diamond-shaped knurling.
Further, chip-removal hole is circular or square in the section along drill bushing axial direction.
Further, chip-removal hole is 10 millimeters~15 millimeters in the length along drill bushing axial direction.
Further, the bottom of drill bushing bar is provided with end-beveling.
The beneficial effects of the utility model are：Chip-removal hole is provided with drill bushing bar, in drill bit process, is partly entered
Iron filings in drill bushing can be excluded by chip-removal hole, so as to avoid iron filings from blocking the through hole in drill bushing, and avoided iron filings and gathered around
Finished surface and the drill bit that fractures are damaged after stifled.
Pressing table is provided with drill bushing, can be fixed by the way that drill bushing is pressed on bushing plate by fastener, work as drill bushing
After damage, drill bushing can be quickly and conveniently replaced.
Brief description of the drawings
Fig. 1 is the half sectional view of chip removal drill bushing.
Fig. 2 is the top view of chip removal drill bushing.
Wherein, 1, drill bushing cap；11st, pressing table；12nd, annular knurl；13rd, bigger diameter end；14th, miner diameter end；15th, the first notch；16th,
Two notches；2nd, drill bushing bar；21st, chip-removal hole；22nd, end-beveling；3rd, through hole；31st, chamfering；4th, groove.
Embodiment
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the scope of embodiment, to the common skill of the art
For art personnel, if various change appended claim limit and the spirit and scope of definite the utility model in,
These changes are it will be apparent that all utilize the innovation and creation of the utility model design in the row of protection.
As shown in Figure 1 and Figure 2, it is cylindrical and coaxial drill bushing cap 1 and drill bushing bar 2 which, which includes, in drill bushing
Be provided with axially through through hole 3, the size of through hole 3 determines according to the size of the drill bit to match, and 3 both ends of through hole are set
There is 45 ° of chamfering 31, the setting of chamfering 31 mainly plays guiding when drill bit enters through hole 3.
Drill bushing cap 1 includes superposed bigger diameter end 13 and the miner diameter end 14 positioned at lower part, and miner diameter end 14 connects with drill bushing bar 2
Connect.It is provided with the first notch 15 and the second notch 16 on drill bushing cap 1, the depth of the first notch 15 is passed through in wearing whole drill bushing cap 1, and
The whole bigger diameter end 13 of depth penetration of two notches 16.The first notch 15 set on drill bushing cap 1 and the second notch 16, which are formed, to be compressed
Platform 11, when using drill bushing, is pressed on the second notch 16 on bushing plate, when needing replacing drill bushing, it is only necessary to slightly with screw
Screw is slightly unclamped, rotary drill bushing, which allows the first notch 15 to be located at screw, can easily remove drill bushing.On 13 external cylindrical surface of bigger diameter end
Small-sized diamond-shaped knurling is provided with, increases the frictional force between hand and drill bushing, and then convenient dismounting in rotary drill bushing.
Mill is machined with chip-removal hole 21 on side of 15 centimetres from 2 bottom of drill bushing bar, and chip-removal hole 21 is connected with through hole 3.Row
It is circular or square that hole 21 is considered to be worth doing in the section along drill bushing axial direction, and the length of its along drill bushing axial direction is 10 millimeters~15 millimeters.
Drill bushing cap 1 and 2 junction of drill bushing bar set fluted 4.The bottom of drill bushing bar 2 is provided with end-beveling 22.
In summary：This chip removal drill bushing can be excluded iron filings by chip-removal hole 21, avoid iron filings from blocking logical in drill bushing
Hole, so as to avoid finished surface and the drill bit that fractures is damaged after iron filings congestion.
Claims (7)
1. a kind of chip removal drill bushing, it is characterised in that including drill bushing cap (1) and drill bushing bar (2), be provided with vertically in the drill bushing
Perforative through hole (3), the through hole (3) are provided at both ends with chamfering (31)；Be provided with the drill bushing cap (1) pressing table (11),
And its outer surface is provided with annular knurl (12), position on the lower side is provided with chip-removal hole (21) in the middle part of drill bushing bar (2) side, described
Chip-removal hole (21) is connected with the through hole (3)；The drill bushing cap (1) and the drill bushing bar (2) junction set fluted (4).
2. chip removal drill bushing according to claim 1, it is characterised in that the drill bushing cap (1) includes superposed major diameter
End (13) and the miner diameter end (14) positioned at lower part, the miner diameter end (14) are connected with the drill bushing bar (2), and the annular knurl (12) sets
Put in the outer surface of the bigger diameter end (13).
3. chip removal drill bushing according to claim 2, it is characterised in that the pressing table (11) include the first notch (15) and
Second notch (16), the thickness of the whole drill bushing cap (1) of depth penetration of first notch (15), second notch (16)
The thickness of the whole bigger diameter end of depth penetration (13).
4. chip removal drill bushing according to claim 1, it is characterised in that the annular knurl (12) is diamond-shaped knurling.
5. chip removal drill bushing according to claim 1, it is characterised in that the chip-removal hole (21) is axial along the drill bushing
Section is circular or square.
6. chip removal drill bushing according to claim 5, it is characterised in that the chip-removal hole (21) is axial along the drill bushing
Length is 10 millimeters~15 millimeters.
7. chip removal drill bushing according to claim 1, it is characterised in that the bottom of the drill bushing bar (2) is provided with end and falls
Angle (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721147063.5U CN207343848U (en) | 2017-09-08 | 2017-09-08 | Chip removal drill bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721147063.5U CN207343848U (en) | 2017-09-08 | 2017-09-08 | Chip removal drill bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207343848U true CN207343848U (en) | 2018-05-11 |
Family
ID=62409592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721147063.5U Active CN207343848U (en) | 2017-09-08 | 2017-09-08 | Chip removal drill bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207343848U (en) |
-
2017
- 2017-09-08 CN CN201721147063.5U patent/CN207343848U/en active Active
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| GR01 | Patent grant |