CN107008934A - Suppress the lateral interior cold hole design method of tool wear during multiple material drilling - Google Patents
Suppress the lateral interior cold hole design method of tool wear during multiple material drilling Download PDFInfo
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- CN107008934A CN107008934A CN201710305853.XA CN201710305853A CN107008934A CN 107008934 A CN107008934 A CN 107008934A CN 201710305853 A CN201710305853 A CN 201710305853A CN 107008934 A CN107008934 A CN 107008934A
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- Prior art keywords
- lateral
- cold hole
- cutter
- tool
- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
Abstract
The lateral interior cold hole design method of tool wear belongs to field of machining and machinebuilding technology when the present invention suppresses multiple material drilling, when being related to a kind of multiple material processing drilling, suppresses the lateral interior cold hole design method of tool wear.This method opens up position, side opening shape, three parts of side opening angle design including side opening；By opening up side Nei Leng holes on the rear knife face or attached knife face of Tool in Cutting molding blade, cutting temperature of the cutter position when multiple material is processed is greatly reduced in spray cooling agent, suppresses tool blade circle and wear of the tool flank.By increasing the structure on drilling cutter, the abrasion of multiple material drilling Tool in Cutting shaping area can be effectively reduced, targetedly suppresses regional temperature rise, so as to avoid cutter material from softening, tool wear is reduced, cutter life is lifted, it is ensured that whole hole machined quality；Suitable for all kinds of composite drillings processing.
Description
Technical field
The invention belongs to field of machining and machinebuilding technology, it is related to a kind of lateral interior cold hole for suppressing tool wear during multiple material drilling
Design method, by increasing the structure on drilling cutter, can effectively reduce the abrasion of multiple material drilling Tool in Cutting shaping area.
Background technology
At present, fiber reinforcement phase composite materials are due to many superior mechanical properties such as its specific strength height, specific modulus height,
The multiple fields such as Aero-Space, chemical industry, automobile making achieve irreplaceable position, such as in Air Passenger A380 large aircrafts
On, the 22% of its fuselage weight is manufactured by composite, and 787 type passenger planes of Boeing's production are even more the 50% of primary structure
All employ composite making.On all kinds of structural members that these composite processings go out, its topmost processing mode is
Just have on Drilling operation, such as a frame F-16 aircrafts on up to 40000 connecting holes, a frame Boeing-747 aircraft is even more to have many
Up to 3,000,000 connecting holes.However, because fiber reinforcement phase composite materials have the mechanics such as interlaminar strength is low, hardness is high, fragility is big
Performance, easily produces the defects such as layering, burr, tear in drilling, so as to cause quality problems, even results in part rejection,
Accordingly, it would be desirable to ensure that drilling cutter there are enough sharp degree in process, the outstanding cutting of long period is able to maintain that
Performance, that is, ensure that the rate of wear of cutter is slower.But the fiber reinforcement inside fiber reinforcement phase composite materials is due to it
Body strong hard fragility and higher abrasion, in process fiber and tool surface can occur violent friction so that
Substantial amounts of heat is produced in cutting region, causes cutter material to soften, abrasion aggravation, cutting ability decreases sharply.In addition, big
Quantifier elimination shows that the cutting forming position of drilling cutter plays decisive role to whole hole quality, and such as Qian Baowei et al. exists
Paper " the tool wear mechanism of Double Tops angular bit head drilling CFRP composites " [J] composite journals, 2017, (04):521-
529) proposed in, when processing CFRP composites, the cutting edge of a knife or a sword of the second main cutting edge most outer cutting edge of Double Tops angle type of bit
Acutance plays a decisive role to the quality in whole hole, and it is serious that cutting edge sharp degree reduction in outer will occur multiple material hole wall and outlet
Damage.Therefore, abrasion suppression is carried out to the cutting edge of process tool epitaxial formation position, it is ensured that Tool in Cutting performance, lifting
Cutter life.At present, the suppressing method for having researched and proposed drilling cutters abrasion such as sprays a large amount of cutting fluids, changes cutter knot
Configuration formula, set up the methods such as interior cold hole.The scheme wherein set up interior cold hole and be passed through coolant or cooling gas wherein is convenient
And effective, such as " a kind of internal Automatic-cooling depth drill " that yellow eastern outstanding person et al. proposes, patent No. CN205851939U, Chen Tao
Et al. disclosed in " carbon fibre composite target drill ", patent No. CN105689765A, the two at point of a knife using opening up
It is double it is straight in cold holes method reduction processing when cutting heat, disclosed in He Genghuang et al. " it is a kind of it is many in cold hole interchangeable blade grooves can
Indexable drill bit cutter hub ", patent No. CN201420706558.7 by way of opening interior cold hole, lifts cooling effect more.But on
Patent is stated, its interior cold hole proposed opens up method and coolant targetedly is not injected in into cutting into for multiple material drilling cutter
On type position, it is impossible to effectively suppress the abrasion in cutting forming area during multiple material processing, do not reach the requirement that cutter life is substantially improved.
The content of the invention
The present invention invents a kind of lateral interior cold hole for suppressing tool wear during multiple material drilling to overcome the deficiencies in the prior art
Design method, this method includes laterally interior cold hole and opens up position, lateral interior cold hole shape, lateral interior cold three portions of orifice angle design
Point.By opening up cold hole in circle in the cutting forming position of drilling cutter, in follow-up drilling process, make coolant from lateral
Spray, effectively reduce the cutting temperature of the part, and there is provided certain lubrication, temperature when reducing processing on cutter is kept away
Exempt from cutter material softening, reduce the abrasion of cutter, and this method can be applied on most drilling cutters.
The technical solution adopted by the present invention is a kind of lateral interior cold pore structure for suppressing tool wear during multiple material drilling, is passed through
Side Nei Leng holes 2 are opened up on the rear knife face or attached knife face of Tool in Cutting molding blade 1, cutter is greatly reduced in spray cooling agent
Cutting temperature of the position when multiple material is processed, suppresses tool blade circle and wear of the tool flank.This method includes cold hole in lateral and opened
If position, lateral interior cold hole shape, lateral interior cold orifice angle design three parts.
The lateral interior cold hole opens up Position Design, has different requirements for different drilling cutters, to single-stage system
Spot facing cutter, side Nei Leng holes 2 are located on the rear knife face of the final end of cutting forming sword 1 of single-stage cutter or attached knife face, to many
Level drilling cutter, side Nei Leng holes 2 are located at after the level last of multistage tool or the final cutting forming sword 1 of penultimate stage
On knife face or attached knife face；And cold this grade of initiating terminal of hole exits centre-to-centre spacing is equal to 0.6-0.8 times of final cutting apart from h2 in side
Molding blade height h1；When side Nei Leng holes 2 are opened on rear knife face, the cold final cutting forming sword 1 of hole exits centre-to-centre spacing in side
Be equal to after cutting forming sword opening area 0.3-0.6 times of knife face minimum widith M apart from N；When side Nei Leng holes be opened in it is attached
During knife face, the cold hole exits hole heart is equal to knife face after cutting forming sword opening area away from final cutting forming sword 1 apart from N in side
1.5-3 times of minimum widith M；It is identical relative to the sharp axial location of tool blade per one-level side Nei Leng holes 2, it is circumferentially opposed in cutter
Axis is uniformly distributed, and makes the side Nei Leng holes 2 opened up after spray cooling agent, the reaction force of acquisition makes a concerted effort center in cutter shaft
On line, it is ensured that cutter dynamic balancing.
The laterally interior cold hole shape design, to ensure that coolant uniformly sprays in all directions, lateral interior cold hole 2 is circle
Shape, the diameter d2 in cold hole 2 is in the range of 0.3-0.5 times of knife face minimum widith M after cutting forming sword opening area in it is lateral,
The diameter in the no more than former inside cold hole 4 of cutter cutter hub interior axle.
The lateral interior cold orifice angle design, to ensure effective to cutting forming sword 1, uniform cooling, is being opened up laterally
During interior cold hole 2, the angle α of cold axially bored line and tool axis in lateral is taken between 80 ° -100 °, at the same time, lateral interior cold
Where hole in section, lateral interior cold axially bored line and normal angle β are pointed to and cutter direction of rotation phase in the range of 5 ° -20 °
Instead.
The beneficial effects of the invention are as follows this method by being opened up on the rear knife face or attached knife face of Tool in Cutting molding blade
Side Nei Leng holes, spray cooling agent is greatly reduced cutting temperature of the cutter position when multiple material is processed, suppress tool blade circle and
Wear of the tool flank.This method opens up position, side opening shape, three parts of side opening angle design including side opening, can be applied to each
Class composite drilling cutter, targetedly suppresses regional temperature rise, so as to avoid cutter material from softening, reduces cutter
Abrasion, lifts cutter life, it is ensured that whole hole machined quality.
Brief description of the drawings：
Fig. 1 is the front view of drilling cutter, and Fig. 2 is the left view of drilling cutter, and Fig. 3 is the upward view of drilling cutter, Fig. 4
For the partial enlarged drawing in Tu2Zhong A areas.Wherein, the final cutting forming swords of 1-；Cold hole in 2- is lateral；Cold axially bored line in 3- is lateral；4-
The inside cold hole of axle；D1- tool diameters；Cold bore dia in d2- is lateral；The final cutting forming sword height of h1-；Cold hole in h2- is lateral
Export center is away from this grade of initiating terminal distance；Knife face minimum widith after L- cutter total lengths, M- cutting forming sword opening areas；N- is lateral
The distance of the interior final cutting forming sword of cold hole exits centre-to-centre spacing；The angle of α-lateral interior cold axially bored line and tool axis；β-lateral
Interior cold axially bored line and normal angle.
Embodiment
Describe the embodiment of the present invention in detail below in conjunction with technical scheme and accompanying drawing.
The lateral interior cold hole design method of tool wear during a kind of suppression of the present embodiment multiple material drilling, as shown in Figure 1, Figure 2 and
Shown in Fig. 3, this method mainly opens up position, lateral internal via shape and the part of side opening angle design three by lateral endoporus and constituted.With
Double Tops angular bit head is processed for specific implementation object, and the drill bit is multilevel hierarchy, and diameter d1 is 8mm, and cutter total length L is
80mm, is the processing that the second main cutting edge region carries out side Nei Leng holes 2 to it in its penultimate stage, to reduce such cutter
Cutting region temperature when processing fiber reinforcement phase composite materials, reduces abrasion, so as to lift the Tool in Cutting life-span, it is ensured that processing
Quality.
Lateral endoporus opens up Position Design：For Double Tops angular bit head, the end of its cutting forming sword 1 decides final apertures
Size and crudy, in Fig. 1, the final cutting forming sword height h1 of cutter are 4.5mm, take cold hole exits centre-to-centre spacing in lateral
Initiating terminal is 0.8*h1=3.6mm apart from h2, is taken in Fig. 4, it is lateral in cold hole exits centre-to-centre spacing cutting forming sword apart from N numerical value
For 1mm, it is ensured that the rigidity of cutting edge, it is to avoid occur cutting edge tipping equivalent damage when being processed caused by perforate.Double Tops angle in example
Four swords of drill bit are uniformly distributed along tool circumferential, and perforate on knife face, works as cooling after the final cutting forming sword 1 of a pair of relative swords
Liquid is after this sprays to side Nei Leng holes 2, and the radial component of the power acted on cutter can cancel each other, resultant torque center
On tool axis, it is to avoid vibration cutting caused by spray cooling liquid, it is ensured that dynamic balancing when cutter rotates, also protect
The crudy in whole hole is demonstrate,proved.
Carry out lateral internal via shape design：Lateral internal via shape is regular circle shapes, as shown in figure 4, Double Tops angular bit in example
Knife face minimum widith M is 1.5mm after the cutting forming sword opening area of head, and it is 0.3*m=to take cold bore dia d2 sizes in side
0.45mm,
Carry out lateral endoporus angle design：As shown in Figure 1 and Figure 3, it is effective to cutting forming sword 1, uniform to ensure
Cooling, when opening up cold hole 2 in lateral, the angle α for taking cold axially bored line 3 and tool axis in lateral is 100 °, has both facilitated lateral
The processing in interior cold hole 2, can guarantee that the overwhelming majority acts on cutting forming area after coolant ejection again.Cut where lateral interior cold hole
In face, it is 20 ° to take cold axially bored line and normal angle β in lateral, and point to cutter direction of rotation on the contrary, make ejection cooling agent with
Tool in cutting sword forms shearing effect, more effectively cut staple.
The lateral interior cold spot facing cutter processed by above-mentioned requirements, drilling cutter can be effectively reduced in cutting by checking
When cutting region temperature, the temperature for especially having the cutting forming blade position of decisive role to whole hole quality has significantly
Decline.In the measurements it has also been found that the abrasion at the position has obvious reduction, cutter life is increased dramatically.This method can
Suitable for all kinds of composite drilling cutters, by setting up cold hole in lateral in cutting forming area, targetedly suppress the area
Domain temperature rise, so as to avoid cutter material from softening, reduces tool wear, lifts cutter life, it is ensured that whole hole machined quality, tool
There is very high application value.
Claims (1)
1. a kind of lateral interior cold hole design method for suppressing tool wear during multiple material drilling, it is characterized in that, this method includes lateral
Interior cold hole opens up position, lateral interior cold hole shape, lateral interior cold three parts of orifice angle design；
The lateral interior cold hole opens up Position Design：To single-stage drilling cutter, lateral interior cold hole (2) is located at the final of single-stage cutter
On the rear knife face or attached knife face of cutting forming sword (1) end, to multistage drilling cutter, lateral interior cold hole (2) is located at multistage knife
On the rear knife face or attached knife face of the final cutting forming sword (1) of level last or penultimate stage of tool；And lateral interior cold hole
Export center is equal to 0.6-0.8 times of final cutting forming sword height h1 away from this grade of initiating terminal apart from h2；When lateral interior cold hole (2) is opened
When on rear knife face, it is lateral in the cold final cutting forming sword (1) of hole exits centre-to-centre spacing apart from N be equal to cutting forming sword aperture area
0.3-0.6 times of knife face minimum widith M behind domain；When cold hole is opened in attached knife face in lateral, it is lateral in the cold hole exits hole heart away from
1.5-3 times that is equal to knife face minimum widith M after cutting forming sword opening area apart from N of final cutting forming sword (1)；Per one-level
Cold hole (2) is identical relative to the sharp axial location of tool blade in lateral, circumferentially opposed to be uniformly distributed in tool axis；Make the side opened up
Inside cold hole 2 is after spray cooling agent, and the reaction force of acquisition makes a concerted effort center on tool axis, it is ensured that cutter dynamic balancing；
Cold hole shape design in lateral：To ensure that coolant uniformly sprays in all directions, lateral interior cold hole (2) is circle, side
The diameter d2 of inside cold hole (2) is 0.3-0.5 times of knife face minimum widith M after cutting forming sword opening area, is not more than former knife
The diameter of the internal inside cold hole (4) of axle；
Cold orifice angle design in lateral：For ensure to cutting forming sword (1) effectively, uniform cooling, it is lateral in cold axially bored line with
The angle α of tool axis is between 80 ° -100 °, in lateral where cold hole in section, it is lateral in cold axially bored line and normal angle
β is pointed to opposite with cutter direction of rotation in the range of 5 ° -20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305853.XA CN107008934B (en) | 2017-05-04 | 2017-05-04 | The lateral interior cold hole design method of tool wear when inhibiting to answer material drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305853.XA CN107008934B (en) | 2017-05-04 | 2017-05-04 | The lateral interior cold hole design method of tool wear when inhibiting to answer material drilling |
Publications (2)
| Publication Number | Publication Date |
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| CN107008934A true CN107008934A (en) | 2017-08-04 |
| CN107008934B CN107008934B (en) | 2018-11-09 |
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| CN201710305853.XA Active CN107008934B (en) | 2017-05-04 | 2017-05-04 | The lateral interior cold hole design method of tool wear when inhibiting to answer material drilling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457459A (en) * | 2017-08-08 | 2017-12-12 | 大连理工大学 | The interior cold hole changed course process of fibre reinforced composites drilling cutter |
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| CN1091066A (en) * | 1992-12-10 | 1994-08-24 | 桑德维克公司 | The method of the augers of carrying coolant passage and manufacturing drill bit |
| JP2005262348A (en) * | 2004-03-17 | 2005-09-29 | Nippon Seratekku Kk | Rotary cutter body and boring method by rotary cutter body |
| US20100021251A1 (en) * | 2008-07-23 | 2010-01-28 | Horton M Duane | Drill bit |
| CN101939126A (en) * | 2007-12-27 | 2011-01-05 | 京瓷株式会社 | Drill |
| CN102728882A (en) * | 2012-07-26 | 2012-10-17 | 浙江大学 | Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy |
| CN203495297U (en) * | 2013-10-15 | 2014-03-26 | 黄石市聚鑫有色机械制造有限公司 | Deep-hole machining drilling tool allowing scraps to be conveniently discharged |
| CN105689765A (en) * | 2016-04-20 | 2016-06-22 | 哈尔滨理工大学 | Drill bit special for carbon fiber composite |
| CN106073910A (en) * | 2016-08-10 | 2016-11-09 | 绍兴华晶科技有限公司 | Cooling Dental Implant drill bit in cross-drilled hole water outlet |
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2017
- 2017-05-04 CN CN201710305853.XA patent/CN107008934B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091066A (en) * | 1992-12-10 | 1994-08-24 | 桑德维克公司 | The method of the augers of carrying coolant passage and manufacturing drill bit |
| JP2005262348A (en) * | 2004-03-17 | 2005-09-29 | Nippon Seratekku Kk | Rotary cutter body and boring method by rotary cutter body |
| CN101939126A (en) * | 2007-12-27 | 2011-01-05 | 京瓷株式会社 | Drill |
| US20100021251A1 (en) * | 2008-07-23 | 2010-01-28 | Horton M Duane | Drill bit |
| CN102728882A (en) * | 2012-07-26 | 2012-10-17 | 浙江大学 | Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy |
| CN203495297U (en) * | 2013-10-15 | 2014-03-26 | 黄石市聚鑫有色机械制造有限公司 | Deep-hole machining drilling tool allowing scraps to be conveniently discharged |
| CN105689765A (en) * | 2016-04-20 | 2016-06-22 | 哈尔滨理工大学 | Drill bit special for carbon fiber composite |
| CN106073910A (en) * | 2016-08-10 | 2016-11-09 | 绍兴华晶科技有限公司 | Cooling Dental Implant drill bit in cross-drilled hole water outlet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457459A (en) * | 2017-08-08 | 2017-12-12 | 大连理工大学 | The interior cold hole changed course process of fibre reinforced composites drilling cutter |
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| Publication number | Publication date |
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| CN107008934B (en) | 2018-11-09 |
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