CN108284242B - A kind of drill bit - Google Patents
A kind of drill bit Download PDFInfo
- Publication number
- CN108284242B CN108284242B CN201810041495.0A CN201810041495A CN108284242B CN 108284242 B CN108284242 B CN 108284242B CN 201810041495 A CN201810041495 A CN 201810041495A CN 108284242 B CN108284242 B CN 108284242B
- Authority
- CN
- China
- Prior art keywords
- drill bit
- shank
- body portion
- main cutting
- cutting edge
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
Abstract
This patent is related to cutter of drill machine field, disclose a kind of drill bit, including drill bit, body portion and shank, drill bit and shank are connected to body portion both ends, drill bit is equipped with main cutting edge, and it be starting and along the chip trough that body portion longitudinal axis extends spirally that body portion, which is equipped with main cutting edge, and the main cutting edge is equipped with chisel edge, chisel edge is linear, the longitudinal axis of chisel edge and body portion；The body portion and the junction of shank are equipped with chamfering blades；The chip trough has been equipped with bits sword far from the side of main cutting edge, plays bits sword and extends spirally with chip trough, and the cross section for playing bits sword is in arc-shaped, and one end and the chip trough for playing bits sword are tangent, and the other end for playing bits sword and the outer edge in body portion are tangent.The drill bit of centering effect and reaming efficiency when this patent is intended to provide a kind of promotion reaming.
Description
Technical field
The present invention relates to cutter of drill machine fields.
Background technique
Drill bit is a kind of most common boring bar tool, it includes the drill bit for being referred to as drill bit end, the drill bit point
Main cutting edge is equipped with to execute the cutting function of drill bit.It is connected to a body portion on drill bit, especially adds in this body portion
The chip trough that work twist extends out, these chip troughs are originated from a main cutting edge of drill bit respectively, along drill bit longitudinal direction
Extend in body portion, body portion is far from being connected to one for clamped shank on one end of drill bit.In general, there are two the tools
On traditional fluted drill of main cutting edge, the two main cutting edges are arranged opposite to each other according to acute angle.
Drill bit carries out clamping usually using chuck.Adjustable claw is typically provided on chuck, to be suitable for different-diameter
The clamping of drill handle part.The problem of often having skidded when clamping drill bit using chuck is beaten when chuck jaw has around drill bit knife handle
When sliding tendency, skidding during drilling will occur, and skidding can do great damage to drill bit.
The processing in hole generally includes drilling and two stages of reaming, in the reaming stage, due to the presence (drill point angle of drill bit
Usually 118 °), when centering, is easy to happen offset, and centering effect is bad, and reaming revolving speed can't be too fast, the quality and effect of reaming
Rate is all difficult to ensure.
Summary of the invention
The invention is intended to provide a kind of drill bit, to promote the centering effect and reaming efficiency when reaming.
One of this programme drill bit, including drill bit, body portion and shank, drill bit and shank are connected to body portion both ends,
Drill bit is equipped with main cutting edge, and it is the chip for originating and extending spirally along body portion longitudinal axis that body portion, which is equipped with main cutting edge,
Slot, the main cutting edge are equipped with chisel edge, and chisel edge is linear, the longitudinal axis of chisel edge and body portion；The body portion and shank
Junction be equipped with chamfering blades；The chip trough has been equipped with bits sword far from the side of main cutting edge, plays bits sword with chip trough spiral
Extend, rising and considering the cross section of sword to be worth doing is in arc-shaped, and one end and the chip trough for playing bits sword are tangent, act the outer of the other end and body portion for considering sword to be worth doing
Edge is tangent.
The technical principle of this programme and have the beneficial effect that drilling when, positioned with the tip of drill bit, especially existed
The reaming stage can also be against on the outer wall for the part being counter-bored using chisel edge, and entire drill bit is kept to keep same with the hole expanded
Axis, while chisel edge can prevent drill bit from occurring to swing and deviate during reaming, the revolving speed of drill bit can be accelerated, and be promoted
The directional effect of reaming.And chisel edge can also form the bottom surface of a plane on the bottom in hole, and it is flat needing to process
The process for changing a knife again is eliminated when bottom outlet, improves reaming efficiency.
After reaming, device to hole is also needed to carry out chamfered sometimes, falling for the junction setting of body portion and shank is set
Angle sword can carry out chamfering to the hole after the completion of reaming immediately, eliminate tool changing process, further promote reaming efficiency.
In addition, the clast appearance of long section is wrapped in body portion in chip trough during due to drilling/reaming, it is easy to scratch
The inner wall in hole or the outer surface of part need to stop at this time drill bit, and operator is removed the clast being wrapped in body portion with hand,
Cleaning efficiency is low.And the drill bit in this programme inverts at this time, the bits sword that rises in chip trough can be to the clast of winding application one
Reversed power loosens clast from body portion；The clast being even stuck between chip trough and hole, in the reversed masterpiece for playing bits sword
It will also be loosened under, then rotate forward drill bit, this part clast can removed.Remove clast phase manually with operator
Than, elimination efficiency is improved, and then but also reaming improved efficiency.
Further, the shank is equipped with anti-slip structure, and anti-slip mechanism includes air drain, tracheae, elastomeric cap and sliding block,
Air drain is provided on shank and notch is towards on the outside of shank, and elastomeric cap lid closes on notch and sealing groove mouth, and elastomeric cap is to shank
Outside protrusion, tracheae are obliquely arranged in shank, and tracheae one end is connected to air drain bottom, and the tracheae other end runs through the table of shank
Face, sliding block are slidably connected at intratracheally.When clamping shank, the elastomeric cap of claw expression lobes pushes away chuck to air drain sunken inside
Endotracheal sliding block sliding is moved, sliding block is against in jaw surface, increases the frictional force between claw and shank, and then play anti-beat
Sliding effect.
Further, one end on the tracheae far from the air drain is towards the drill bit side.After sliding block and claw offset,
Claw will apply a direction active force from drill bit towards shank to shank by sliding block, be maintained at shank in chuck,
It avoids shank from deviating from out of chuck, also further promotes anti-slip effect.
Further, it is equipped with slideway in the shank, slideway connectivity trachea slidably connects mandril, mandril and cunning in slideway
It is equipped with pressure spring between road bottom, is equipped with non-slip groove towards the side of slideway on the sliding block.Pressure spring pushes on mandril and sliding block
Non-slip groove offset, anti-limited slip block retracts, and is further ensured that anti-slip effect.
Further, the elastomeric cap is in taper type, and elastomeric cap is made of rubber.When claw squeezes elastomeric cap, by elastomeric cap
Squeeze into air drain, reduce air drain in volume so that increase air drain air pressure, push slide block movement while, guarantee elastomeric cap with
Good leakproofness between air drain.
Further, it is equipped with cavity in the elastomeric cap, is vacuum in cavity.It, will be intratracheal when elastomeric cap excessive compression
Generate great pressure, excessive pressure may push sliding block to support to hurt claw.The setting of the cavity of vacuum, so that air pressure in air drain
When excessively high, elastomeric cap is crushed automatically, and gas enters in cavity, reduces the pressure in air drain.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of drill bit of the embodiment of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the partial enlarged view in Fig. 1 at A.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description include: drill bit 1, body portion 2, shank 3, chip trough 4, chisel edge 5, chamfering blades 6,
Main cutting edge 7 plays bits sword 8, air drain 9, tracheae 10, elastomeric cap 11, sliding block 12, cavity 13, slideway 14, mandril 15.
A kind of embodiment of drill bit is basic as shown in attached drawing 1, attached drawing 2 and attached drawing 3: including drill bit 1, body portion 2 and shank
3, drill bit 1 and shank 3 are connected to 2 both ends of body portion, and drill bit 1 is equipped with main cutting edge 7, and body portion 2 is equipped with main cutting edge 7
For starting and along the chip trough 4 that 2 longitudinal axis of body portion extends spirally, main cutting edge 7 is equipped with chisel edge 5, and chisel edge 5 is linear, horizontal
The longitudinal axis of sword 5 and body portion 2；Body portion 2 and the junction of shank 3 are equipped with chamfering blades 6；Chip trough 4 is far from main cutting edge 7
Side has been equipped with bits sword 8, plays bits sword 8 and extends spirally with chip trough 4, and the cross section for playing bits sword 8 is in arc-shaped, plays the one of bits sword 8
End is tangent with chip trough 4, and the outer edge of the other end and body portion 2 that play bits sword 8 is tangent；Shank 3 is equipped with anti-slip structure, anti-to beat
Sliding mechanism includes air drain 9, tracheae 10, elastomeric cap 11 and sliding block 12, and air drain 9 is provided on shank 3 and notch is towards outside shank 3
Side, the lid of elastomeric cap 11 closes on notch and sealing groove mouth, and elastomeric cap 11 is obliquely arranged in 3 outside protrusion of shank, tracheae 10
In shank 3,10 one end of tracheae is connected to 9 bottom of air drain, 10 other end of tracheae through shank 3 surface and towards 1 side of drill bit,
Sliding block 12 is slidably connected in tracheae 10；It is equipped with slideway 14 in shank 3,14 connectivity trachea 10 of slideway is slidably connected in slideway 14
There is a mandril 15, be equipped with pressure spring between 14 bottom of mandril 15 and slideway, is equipped with non-slip groove towards the side of slideway 14 on sliding block 12；
Elastomeric cap 11 is in taper type, and elastomeric cap 11 is made of rubber, and cavity 13 is equipped in elastomeric cap 11, is vacuum in cavity 13.
Drill bit clamping is stuck in when on chuck and clamps shank 3, the elastomeric caps 11 of claw expression lobes to 9 sunken inside of air drain,
The sliding block 12 in tracheae 10 is pushed to slide, sliding block 12 is against in jaw surface, increases the frictional force between claw and shank 3, together
When claw a direction active force from drill bit 1 towards shank 3 will be applied to shank 3 by sliding block 12, so that shank 3 is maintained at
In chuck, shank 3 is avoided to deviate from out of chuck, also plays the effect of anti-slip.And vacuum cavity 13 is set in elastomeric cap 11
It sets, when so that air pressure is excessively high in air drain 9, elastomeric cap 11 is crushed automatically, and gas enters in cavity 13, is reduced in air drain 9
Pressure prevents pressure excessive in tracheae 10 from support sliding block 12 and hurts claw.
It in drilling, is positioned with the tip of drill bit 1, especially in the reaming stage, can also be against using chisel edge 5
On the outer wall for the part being counter-bored, entire drill bit is kept to keep coaxial with the hole expanded, while chisel edge 5 can be in the process of reaming
In prevent drill bit 1 occur swing and deviate, the revolving speed of drill bit can be accelerated, and the directional effect of reaming is improved.And chisel edge 5
The bottom surface that a plane can also be formed on the bottom in hole, the work for changing a knife again is eliminated when needing to process flat-bottom hole
Sequence improves reaming efficiency.
After reaming, device to hole is also needed to carry out chamfered sometimes, the junction setting of body portion 2 and shank 3 is set
Chamfering blades 6 can carry out chamfering to the hole after the completion of reaming immediately, eliminate tool changing process, further promote reaming efficiency.
In addition, the clast appearance of long section is wrapped in body portion 2 in chip trough 4 during due to drilling/reaming, it is easy to scrape
The inner wall in flower hole or the outer surface of part, need to stop at this time drill bit, and it is clear that operator with hand will be wrapped in the clast in body portion 2
It removes, cleaning efficiency is low.And the drill bit in this programme inverts at this time, rising in chip trough 4, which considers a sword 8 to be worth doing, to apply the clast of winding
One reversed power, loosens clast from body portion 2；The clast being even stuck between chip trough 4 and hole is playing bits sword 8
It will also be loosened under opposite force effect, then rotate forward drill bit, this part clast can removed.It is removed manually with operator
Clast is compared, and elimination efficiency is improved, and then but also reaming improved efficiency.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (5)
1. a kind of drill bit, including drill bit, body portion and shank, drill bit and shank are connected to body portion both ends, drill bit is equipped with
Main cutting edge, it is the chip trough for originating and extending spirally along body portion longitudinal axis that body portion, which is equipped with main cutting edge, it is characterised in that:
The main cutting edge is equipped with chisel edge, and chisel edge is linear, the longitudinal axis of chisel edge and body portion；The company in the body portion and shank
It meets place and is equipped with chamfering blades；The chip trough has been equipped with bits sword far from the side of main cutting edge, plays bits sword and extends spirally with chip trough,
The cross section for playing bits sword is in arc-shaped, and one end and the chip trough for playing bits sword are tangent, plays the other end of bits sword and the outer edge in body portion
It is tangent；The shank is equipped with anti-slip structure, and anti-slip mechanism includes air drain, tracheae, elastomeric cap and sliding block, and air drain is provided with
On shank and notch is towards shank outside, and elastomeric cap lid closes on notch and sealing groove mouth, and elastomeric cap is raised to shank outside, gas
Pipe is obliquely arranged in shank, and tracheae one end is connected to air drain bottom, and the tracheae other end runs through the surface of shank, sliding block sliding
It is connected to intratracheal.
2. a kind of drill bit according to claim 1, it is characterised in that: far from one end direction of the air drain on the tracheae
The drill bit side.
3. a kind of drill bit according to claim 2, it is characterised in that: it is equipped with slideway in the shank, slideway connectivity trachea,
Mandril is slidably connected in slideway, pressure spring is equipped between mandril and slide bottom, towards setting on the side of slideway on the sliding block
There is non-slip groove.
4. a kind of drill bit according to claim 1, it is characterised in that: the elastomeric cap is in taper type, and elastomeric cap is by rubber
It is made.
5. a kind of drill bit according to claim 4, it is characterised in that: be equipped with cavity in the elastomeric cap, be true in cavity
It is empty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041495.0A CN108284242B (en) | 2018-01-16 | 2018-01-16 | A kind of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041495.0A CN108284242B (en) | 2018-01-16 | 2018-01-16 | A kind of drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108284242A CN108284242A (en) | 2018-07-17 |
| CN108284242B true CN108284242B (en) | 2019-06-21 |
Family
ID=62835496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810041495.0A Active CN108284242B (en) | 2018-01-16 | 2018-01-16 | A kind of drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108284242B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131432B (en) * | 2021-11-26 | 2023-03-28 | 牧野机床（中国）有限公司 | Ball cutter and machining method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984001913A1 (en) * | 1982-11-10 | 1984-05-24 | Roland Naeslund | Drill construction |
| US5252009A (en) * | 1991-01-22 | 1993-10-12 | Joseph Bossler | Industrial and roadway identification and floor surface treatment system, and diamond surface drill bit for use in installing the system |
| CN201613384U (en) * | 2010-03-24 | 2010-10-27 | 常州春剑数控机床有限公司 | Compound drill bit |
| CN202317287U (en) * | 2011-12-06 | 2012-07-11 | 苏州维赛克阀门检测技术有限公司 | Cutting tool |
| CN204108413U (en) * | 2014-09-24 | 2015-01-21 | 江苏舜天国际集团苏迈克斯工具有限公司 | A kind of seven cutting drill heads |
-
2018
- 2018-01-16 CN CN201810041495.0A patent/CN108284242B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984001913A1 (en) * | 1982-11-10 | 1984-05-24 | Roland Naeslund | Drill construction |
| US5252009A (en) * | 1991-01-22 | 1993-10-12 | Joseph Bossler | Industrial and roadway identification and floor surface treatment system, and diamond surface drill bit for use in installing the system |
| CN201613384U (en) * | 2010-03-24 | 2010-10-27 | 常州春剑数控机床有限公司 | Compound drill bit |
| CN202317287U (en) * | 2011-12-06 | 2012-07-11 | 苏州维赛克阀门检测技术有限公司 | Cutting tool |
| CN204108413U (en) * | 2014-09-24 | 2015-01-21 | 江苏舜天国际集团苏迈克斯工具有限公司 | A kind of seven cutting drill heads |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108284242A (en) | 2018-07-17 |
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