CN104190998B - Chit drill - Google Patents
Chit drill Download PDFInfo
- Publication number
- CN104190998B CN104190998B CN201410371120.2A CN201410371120A CN104190998B CN 104190998 B CN104190998 B CN 104190998B CN 201410371120 A CN201410371120 A CN 201410371120A CN 104190998 B CN104190998 B CN 104190998B
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- CN
- China
- Prior art keywords
- knife face
- drillstock
- hole
- chit drill
- flat blade
- 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
- B23B51/0002—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position
- B23B51/0003—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position with exchangeable heads or inserts
- B23B51/00035—Spade drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The present invention relates to machining technology field, more particularly to chit drill.The cutter hub being made up of wolfram steel material；The cutter hub includes cylindrical drillstock, and the flat blade being connected with drillstock；The flat blade include left knife face and right knife face, and right knife face width more than left knife face width；The left knife face is equipped with chamfering with the junction of right knife face；The right knife face end is provided with point of a knife；Cambered surface chip area is provided between the drillstock and flat blade；The left knife face is equipped with cutting edge with right knife face edge, and diamond coatings are equipped with the cutting edge；Make chit drill processing efficiency, can be with one-shot forming.
Description
Technical field
The present invention relates to machining technology field, more particularly to chit drill.
Background technology
With the development of mechanical field, shoulder hole is also more and more diversified；The rank with chamfering between upper and lower holes is processed
, it is necessary to repeatedly tool changing during terraced hole；Procedure is which increased, process time is increased；To this kind of part processing of high-volume
When, waste time and energy；Especially when brass class part is processed, cutter easily glues copper, causes machining accuracy not high.
The content of the invention
Processing efficiency is improved it is an object of the invention to provide one kind, can be with one-time formed chit drill.
Technical scheme is as follows：
Chit drill, including the cutter hub that wolfram steel material is made；The cutter hub includes cylindrical drillstock, and be connected with drillstock it is flat
Flat blade；The flat blade include left knife face and right knife face, and right knife face width more than left knife face width；The left knife
Face is equipped with chamfering with the junction of right knife face；The right knife face end is provided with point of a knife；Set between the drillstock and flat blade
It is equipped with cambered surface chip area；The left knife face is equipped with cutting edge with right knife face edge, and diamond is equipped with the cutting edge
Coating
The point of a knife wedge angle is 120 °.Point of a knife wedge angle is larger, can improve point of a knife intensity, is conducive to hardness is bigger workpiece
Carry out milling.
The left knife face chisel edge back taper 0.27mm wide, cone angle is 45 ° after its chisel edge.In drilling, left knife face chisel edge stress
It is larger, in order in drilling, increase the intensity of chisel edge, it is to avoid the turned and tipping of chisel edge；Back taper is set on chisel edge, increases horizontal
The intensity and rigidity of sword.
The right knife face chisel edge back taper 0.3mm wide, cone angle is 45 ° after its chisel edge.Drilling when, right knife face chisel edge stress compared with
Greatly, in order in drilling, increase the intensity of chisel edge, it is to avoid the turned and tipping of chisel edge；Back taper is set on chisel edge, increases chisel edge
Intensity and rigidity.
The left knife face external diameter is 5.13mm, the left knife face 10mm long；The right knife face external diameter is 8.04mm, the knife
Point to the length of chip area is 26mm.Because left and right knife face diameter is smaller with length, so that when ensureing to bore less hole, can
One-shot forming, it is to avoid repeat to process.
The drillstock external diameter is 6mm.Because left and right knife face diameter is smaller, it is ensured that overall attractive in appearance and rigid of cutter.
The drillstock end is provided with coolant inlet hole, and described coolant inlet hole one end is stretched out drillstock end and is in communication with the outside,
The other end is located in drillstock；The first through hole of some connection coolant inlet holes is evenly equipped with the outer surface of revolution of the drillstock；The brill
Handle is provided with guider；The guider includes the left outside screw thread and right external screw thread that are arranged on the outer surface of revolution of drillstock；Institute
State and be arranged with the nut being adapted to it on left outside screw thread, right external screw thread；Support plate, the support are provided between two nut
Second through hole corresponding with first through hole position is provided with disk；Equal socket joint has " Off " shape pipe in second through hole；It is described
" Off " shape pipe one end is stretched out the second through hole and is threadedly coupled with first through hole, and the spout of the other end is towards flat blade direction.It is real
Now to the cooling in flat blade process；Cooling effect of the coolant to flat blade can be improved.
The beneficial effects of the invention are as follows：Chit drill of the invention, using the cutter hub of wolfram steel, and wolfram steel have hardness it is high, wear-resisting,
Intensity and toughness is preferable, heat-resisting, corrosion resistant performance, improves the intensity and hardness of chit drill；In the company of left knife face and right knife face
Meet place and chamfering is set, it is ensured that when the shoulder hole of chamfering is carried inside milling, can be with one-shot forming, it is to avoid repeat to process, improve
Processing efficiency；The application uses flat blade, is conducive to chip removal during cutting, and be provided with arc between drillstock and flat blade
Face chip area, in milling, cambered surface chip area has good guide effect, metal fillings is outwards arranged along the cambered surface of chip area
Go out；Diamond coatings are further equipped with the cutting edge, on the one hand make chit drill not easy to wear, on the other hand can effectively keep away
Exempt from the viscous copper of chit drill.
Brief description of the drawings
By detailed description below in conjunction with the accompanying drawings, the present invention is foregoing will to be become with other objects, features and advantages
Obviously.
Wherein：Fig. 1 is schematic structural view of the invention；
Fig. 2 is A-A sectional views of the present invention；
Fig. 3 is B-B sectional views of the present invention；
Fig. 4 is I portions of the present invention side schematic view；
Fig. 5 is guider structural representation of the present invention；
Fig. 6 is left outside screw thread of the invention and right external screw thread schematic diagram；
In accompanying drawing, 1 is drillstock, and 2 is left knife face, and 3 is right knife face, and 4 is chamfering, and 5 is point of a knife, and 6 is cambered surface chip area, and 7 are
Coolant inlet hole, 8 is first through hole, and 9 is left-hand thread, and 10 is right-hand thread, and 11 is " Off " shape pipe, and 12 is nut, and 13 is support plate,
14 is the second through hole.
Specific embodiment
Embodiment 1
It is shown in Figure 1,
Chit drill, including the cutter hub that wolfram steel material is made；The cutter hub includes cylindrical drillstock 1, and be connected with drillstock
Flat blade, on the one hand improves the intensity and hardness of chit drill, is on the other hand conducive to chip removal during processing；The flat blade
Width including left knife face 2 and right knife face 3, and right knife face is more than the width of left knife face；The connection of the left knife face and right knife face
Place is equipped with chamfering 4, it is ensured that when the shoulder hole of chamfering is carried inside milling, can be with one-shot forming, it is to avoid repeats to process, improves
Processing efficiency；The right knife face end is provided with point of a knife 5；Cambered surface chip area 6 is provided between the drillstock and flat blade, in milling
When cutting, cambered surface chip area has good guide effect, metal fillings is discharged along the cambered surface of chip area；The left knife face with
Right knife face edge is equipped with cutting edge, and diamond coatings are equipped with the cutting edge, on the one hand makes chit drill not easy to wear, separately
On the one hand it is possible to prevente effectively from the viscous copper of chit drill.
Embodiment 2
On the basis of previous embodiment, in order to improve point of a knife intensity, the point of a knife wedge angle a1 is 120 °.Due to point of a knife point
Angle is larger, makes point of a knife intensity larger, is conducive to carrying out milling to hardness is bigger workpiece.
Embodiment 3
On the basis of embodiment 1, in order to increase the intensity of left knife face chisel edge, the left knife face chisel edge back taper L1 wide is
0.27mm, cone angle a2 is 45 ° after its chisel edge.In drilling, left knife face chisel edge stress is larger, in order to increase the intensity of chisel edge, keeps away
Exempt from the turned and tipping of chisel edge；Back taper is set on chisel edge, increases the intensity and rigidity of chisel edge.
Embodiment 4
On the basis of embodiment 1, in order to increase the intensity of right knife face chisel edge, the right knife face chisel edge back taper L2 wide is
0.3mm, cone angle a3 is 45 ° after its chisel edge.In drilling, right knife face chisel edge stress is larger, in order in drilling, increase chisel edge
Intensity, it is to avoid the turned and tipping of chisel edge；Back taper is set on chisel edge, increases the intensity and rigidity of chisel edge.
Embodiment 5
On the basis of embodiment 1, in order to avoid repeating tool changing, the left knife face outer diameter D 1 is 5.13mm, the left knife
Face L3 long is 10mm；The right knife face outer diameter D 2 is 8.04mm, and the length L4 of the point of a knife to chip area is 26mm.Due to it is left,
Right knife face diameter is smaller with length, so that when ensureing to bore less hole, being capable of one-shot forming, it is to avoid repeat tool changing.
Embodiment 6
On the basis of embodiment 1, in order to ensure the overall appearance of chit drill, the drillstock outer diameter D 3 is 6mm.Due to it is left,
Right knife face diameter is smaller, using less drillstock external diameter, can be good at ensure that the attractive in appearance and rigid of cutter entirety.
Embodiment 7
On the basis of embodiment 1, in order to increase the cooling effect of chit drill flat blade in processing, the drillstock end
Coolant inlet hole 7 is provided with, described coolant inlet hole one end is stretched out drillstock end and is in communication with the outside, the other end is located in drillstock；Institute
State the first through hole 8 that some connection coolant inlet holes are evenly equipped with the outer surface of revolution of drillstock；The drillstock is provided with guider；Institute
Stating guider includes the left outside screw thread 9 and right external screw thread 10 that are arranged on the outer surface of revolution of drillstock；The left outside screw thread, right outer spiral shell
The nut 12 being adapted to it is arranged with line；Support plate 13 is provided between two nut, is provided with the support plate and
The second corresponding through hole 14 of one lead to the hole site；Equal socket joint has " Off " shape pipe 11 in second through hole；" Off " the shape pipe one
End is stretched out the second through hole and is threadedly coupled with first through hole, and the spout of the other end is towards flat blade direction.Due to flat blade
The limitation of shape, can not set coolant inlet hole in flat blade, the heat for producing in process cannot be excluded effectively；
And flat blade will be sprayed to by the coolant flowed into coolant inlet hole using guider, realize to flat blade process
In cooling, improve coolant to the cooling effect of flat blade (it is worth noting that the spout of " Off " shape pipe other end is in court
While to flat blade direction, in addition it is also necessary to be directed at the direction of flat blade).
The invention is not limited in described embodiment, those skilled in the art is not departing from spirit of the invention i.e. public affairs
In the range of opening, can still make some amendments or change, thus the scope that is limited with claims of the scope of the present invention as
It is accurate.
Claims (6)
1. chit drill, it is characterised in that including the cutter hub that wolfram steel material is made；The cutter hub includes cylindrical drillstock, and with brill
The flat blade of handle connection；The flat blade include left knife face and right knife face, and right knife face width more than left knife face width
Degree；The left knife face is equipped with chamfering with the junction of right knife face；The right knife face end is provided with point of a knife；The drillstock and flat
Cambered surface chip area is provided between blade；The left knife face is equipped with cutting edge with right knife face edge, on the cutting edge
It is provided with diamond coatings；The drillstock end is provided with coolant inlet hole, described coolant inlet hole one end stretch out drillstock end with it is outer
Boundary is connected, and the other end is located in drillstock；The first through hole of some connection coolant inlet holes is evenly equipped with the outer surface of revolution of the drillstock；
The drillstock is provided with guider；The guider includes the left outside screw thread and right outer spiral shell that are arranged on the outer surface of revolution of drillstock
Line；The nut being adapted to it is arranged with the left outside screw thread, right external screw thread；Support plate is provided between two nut, institute
State and second through hole corresponding with first through hole position is provided with support plate；Equal socket joint has " Off " shape pipe in second through hole；
Described " Off " shape pipe one end is stretched out the second through hole and is threadedly coupled with first through hole, and the spout of the other end is towards flat blade side
To.
2. chit drill according to claim 1, it is characterised in that the point of a knife wedge angle is 120 °.
3. chit drill according to claim 1, it is characterised in that the left knife face chisel edge back taper 0.27mm wide, its chisel edge cone
Angle is 45 °.
4. chit drill according to claim 1, it is characterised in that the right knife face chisel edge back taper 0.3mm wide, its chisel edge cone angle
It is 45 °.
5. chit drill according to claim 1, it is characterised in that the left knife face external diameter is 5.13mm, the left knife face is long
10mm；The right knife face external diameter is 8.04mm, and the length of the point of a knife to chip area is 26mm.
6. chit drill according to claim 1, it is characterised in that the drillstock external diameter is 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371120.2A CN104190998B (en) | 2014-07-30 | 2014-07-30 | Chit drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371120.2A CN104190998B (en) | 2014-07-30 | 2014-07-30 | Chit drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104190998A CN104190998A (en) | 2014-12-10 |
| CN104190998B true CN104190998B (en) | 2017-06-06 |
Family
ID=52076445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410371120.2A Active CN104190998B (en) | 2014-07-30 | 2014-07-30 | Chit drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104190998B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216727B (en) * | 2016-07-29 | 2018-11-16 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of multi-stage stairs throttle orifice method for turning |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201572977U (en) * | 2009-11-23 | 2010-09-08 | 杭州雄飞冷精锻技术有限公司 | Plane screwer |
| CN102837035A (en) * | 2011-06-21 | 2012-12-26 | 无锡雨田精密工具有限公司 | Step forming flat drill |
| CN202114308U (en) * | 2011-06-21 | 2012-01-18 | 无锡雨田精密工具有限公司 | Flat tungsten steel drill |
| CN102837040A (en) * | 2011-06-24 | 2012-12-26 | 无锡雨田精密工具有限公司 | Molded flat drill |
| CN103878416A (en) * | 2012-12-19 | 2014-06-25 | 浙江汉纳机械科技有限公司 | Cooling device for tool handle |
| CN103722223A (en) * | 2013-11-26 | 2014-04-16 | 李仕清 | Drill chuck with cooling device |
| CN103658768A (en) * | 2013-12-17 | 2014-03-26 | 无锡雨田精密工具有限公司 | Forming flat drill |
| CN103817374B (en) * | 2014-02-26 | 2016-01-13 | 大连理工大学 | A kind of cutter to resin-based carbon fiber composite drilling |
| CN204094198U (en) * | 2014-07-30 | 2015-01-14 | 常州创伟工具制造有限公司 | Chit drill |
-
2014
- 2014-07-30 CN CN201410371120.2A patent/CN104190998B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104190998A (en) | 2014-12-10 |
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