CN106624075A - Step molding drill for pore forming on carbon fiber plate - Google Patents
Step molding drill for pore forming on carbon fiber plate Download PDFInfo
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- CN106624075A CN106624075A CN201611188103.0A CN201611188103A CN106624075A CN 106624075 A CN106624075 A CN 106624075A CN 201611188103 A CN201611188103 A CN 201611188103A CN 106624075 A CN106624075 A CN 106624075A
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- Prior art keywords
- sword
- knife
- chamfering
- drill
- spiral
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/009—Stepped drills
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/32—Chip breaking or chip evacuation
- B23B2200/328—Details of chip evacuation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a step molding drill for pore forming on a carbon fiber plate. The step molding drill comprises a drill bit, a chamfering knife and a handle, wherein the drill bit, the chamfering knife and the handle are coaxially connected in sequence; the drill bit comprises two spiral drill blade parts which are arranged in a central symmetry manner; spiral drill hole chip areas are encircled between the corresponding front blade surfaces and blade back surfaces on the two drill blade parts; the drill blade parts comprise drill tip cone edges, spiral peripheral edges as well as second and third cone edges which are sequentially connected between the drill tip cone edges and the spiral peripheral edges; the chamfering knife comprises two spiral chamfering blade parts arranged in a central symmetry manner; spiral chamfering chip areas are encircled between the corresponding front blade surfaces and blade back surfaces on the two chamfering blade parts; the chamfering blade parts comprise chamfering cone edges and circumferential secondary edges; the chamfering cone edges and the spiral circumferential edges are connected to form steps; and the drill hole chip areas are communicated with the chamfering chip areas.
Description
Technical field
The present invention relates to drilling cutter field, particularly relates to one kind during processing carbon fiber board for drilling and hole shoulder
The shaping step drill of chamfering.
Background technology
Currently, domestic and international general-purpose aircraft is increasingly employed composite, answering particularly on cubpiston
With more extensive.The wing (including spar, stringer and covering) of aircraft, fuselage, empennage, covering, fuel tank, enging cabin are all adopted
With composite, and drilling is one of most important manufacturing procedure in fibre reinforced composites manufacture process, and existing process
It is processed for hand-operated pneumatic instrument.
Because fibre reinforced composites are increased by the big fiber of the soft and tough matrix material of matter and intensity height, hardness
Two-phase or heterogeneous structure material that strong material is mixed, its anisotropy, low-thermal conductivity, low interfacial bonding strength make its into
For typical difficult-to-machine material.
Broad-spectrum composite is broadly divided into glass fiber compound material and carbon fibre composite in producing now,
And high intensity that carbon fibre composite has, high rigidity, the advantages of anti-fatigue performance is good, heat-resisting quantity is good so as to flying
There is more preferable advantage and application in machine design, manufacture.With the extensive application of carbon fiber, consequently also bring carbon fiber and be combined
Material is in processing and the problem of fit on.Now, the shortcoming of carbon fibre composite is more highlighted, become drilling,
The subject matter source of assembling.Mainly overcome when carbon fibre composite drills carbon fiber composite structure high intensity,
The low difficult problem of high rigidity, poor thermal conductivity, anisotropy, interlaminar strength, therefore, during fibre reinforced composites drilling,
In addition to traditional metal materials drilling defect (scale error, deviation from circular from, site error and error of perpendicularity etc.), it is also embodied by point
Layer, gateway tear are with burr, hole wall surface spike protein gene etc., and working (machining) efficiency is not high.
The country is original to process drilling on carbon fiber board, and device to hole shoulder carries out chamfering, as shown in figure 1, use using an ancient type of spoon
Head bores a drillings, and then Shi as shown in Figure 2 Huo bores b device to hole shoulder and carries out chamfering, therefore whole technique needs two knives to carry out
Processing, processing mode is hand pneumatic tool, and such efficiency is low and the drawbacks of easily there is size bad control；Existing technique
The reason for being divided into two cutters to complete is to ensure that fillet surface precision more preferably, and the cutting resistance processed twice is little, institute
The reason for being never had using a knife dual-purpose overall plan with drill process before this is that fillet surface can be caused not straight, and
The easy tipping of cutting edge.
The content of the invention
The present invention provides a kind of shaping step drill for drilling on carbon fiber board, its technical problem underlying to be solved
It is：Traditional carbon fiber board etc. to be strengthened when being processed drilling on composite, drilling and hole shoulder chamfering are respectively to rely on
Two cutters are completing, therefore processing technology is relative complex, needs midway tool changing, and purchase cost is high.
For the deficiencies in the prior art, the present invention provides a kind of shaping step drill for drilling on carbon fiber board, its bag
Drill bit, rose reamer and handle of a knife are included, the drill bit, rose reamer and handle of a knife are coaxially sequentially connected, the drill bit is fluted drill, its
Including the drill lip portion of two settings that twist and with the central axis of handle of a knife are centrosymmetric, in two drill lip portions mutually
Surround out spiral helicine drilling chip area between corresponding rake face and knife back face, the drill lip portion include apex point conical surface sword,
The all swords of spiral and the second conical surface sword being connected in turn between the apex point conical surface sword and spiral Zhou Ren and having three pyramidal faces sword；Institute
Chamfering blade of the rose reamer including two settings that twist and with the central axis of handle of a knife are centrosymmetric is stated, is fallen described in two
Mutually spiral helicine chamfering chip area, the chamfering blade bag are surrounded out between corresponding rake face and knife back face on the blade of angle
Chamfering cone sword and circumference pair sword are included, the chamfering cone sword is connected to form step-like with the spiral Zhou Ren, the drilling row
Bits groove is connected with the chamfering chip area.
It is preferable over：The semiapex angle of the apex point conical surface sword is 65.5 ° -66.5 °, and the semiapex angle of second conical surface sword is
42 ° -43 °, the semiapex angle of the having three pyramidal faces sword is 26.5 ° -27.5 °；The semiapex angle of chamfering cone sword is 49.5 °-
50.5°。
It is preferable over：The drill lip portion and chamfering blade are right-hand screw structure, the drilling chip area and chamfering chip removal
Groove is right-hand screw structure, and the spiral angle of the drill lip portion and drilling chip area is 18 ° -19 °, the chamfering blade and chamfering
The spiral angle of chip area is 27 ° -28 °.
It is preferable over：The one end being connected with chamfering cone sword on the spiral Zhou Ren offers back chipping notch, the back chipping
The width of notch is 0.8mm, depth less than 0.15mm.
It is preferable over：The width of the major first flank of the apex point conical surface sword is 0.7-0.75mm, relief angle is 19 ° -21 °, institute
State knife face after the second of apex point conical surface sword width be 2.2-2.4mm, relief angle be 35 ° -39 °, the 3rd of the apex point conical surface sword the
Afterwards the relief angle of knife face is 60 °；The relief angle of the major first flank of second conical surface sword and having three pyramidal faces sword be 19 ° -21 °,
The relief angle of knife face is 35 ° -39 ° after two；The relief angle of the rear knife face of the chamfering cone sword is 18 ° -19 °.
It is preferable over：The point of a knife that the apex point conical surface sword is crossed to form with second conical surface sword is around the center of the handle of a knife
Axis rotates a diameter of 4.47-4.49mm of the sweeping arc track to be formed, and the circle jump degree tolerance of the apex point conical surface sword does not surpass
0.01mm is crossed, the point of a knife that second conical surface sword is crossed to form with the having three pyramidal faces sword revolves around the central axis of the handle of a knife
Turn a diameter of 6.24-6.26mm of the sweeping arc track of formation, the spiral Zhou Ren revolves around the central axis of the handle of a knife
Turn a diameter of 7.90-7.92mm of the sweeping arc surface of formation, the circumference pair sword rotates around the central axis of the handle of a knife
A diameter of 11.989-12mm of the sweeping arc surface of formation, a diameter of 9.98-10mm of the handle of a knife, the spiral week sword and
The circle jump degree tolerance of circumference pair sword is less than 0.003mm.
It is preferable over：A diameter of 1.95-2.05mm of the trench bottom of the drilling chip area, the spiral shell are located on the drill bit
The width of the rear knife face of rotation Zhou Ren is 2.20-2.30mm, and the back-off drop of the rear knife face of the spiral Zhou Ren is 0.25mm, described
Arrange between the knife back face of the rear knife face of spiral Zhou Ren to the drill lip portion is in turn over back structure, and the spiral Zhou Ren to the brill
Width between the knife back face of blade is 4.3mm.
It is preferable over：Width between the knife back face of the circumference pair sword to the chamfering blade is 5.7mm.
It is preferable over：The chisel edge formed between apex point conical surface sword in two drill lip portions is X-type, is located on the drill bit
The two ends of the chisel edge offer and cut out mouth, and the angle between the sagittal plane for cutting out direction and the drill bit for cutting out mouth
For 57 °, the bottom land angle for cutting out mouth is 90 °, and the side cell wall for cutting out mouth is crossed to form with the apex point conical surface sword
Side and the chisel edge between angle be 130 °, mouth is cut out described in two and is crossed to form with two apex point conical surface swords respectively
Distance of the side on axis projection be 0.15-0.19mm, cut out described in two mouth respectively with two apex point conical surface swords
The distance on axis projection on the side that afterwards knife face is crossed to form is 0.233mm.
It is preferable over：The length of the drill bit is the length of 27.175-27.215mm, the drilling chip area and chamfering chip area
Degree sum is 45-45.5mm, and the length sum of the drill bit and rose reamer is 54.5-55.5mm, the drill bit, rose reamer and
The length sum of handle of a knife is 85-85.5mm.
It is preferable over：The surface of drill bit and rose reamer is respectively provided with CVD brait coatings.
Compared with prior art, the invention has the beneficial effects as follows：
First, a kind of overall plan for processing drilling and hole shoulder chamfering as a knife for proposing, can simplify processing work
Sequence, without midway tool changing, and reduces purchase cost；Become helical angle additionally by secondary fluting between drill bit and rose reamer
Structure design, chamfering cone sword increase helical angle makes fillet surface more straight, and precision can more preferably be ensured, solve chamfer dimesion, essence
Degree it cannot be guaranteed that, cutting edge easily collapses and lacks and the big problem of resistance；
2nd, on the conical surface of drill bit by the way of the conical surface sword that the multiple drift angles for setting gradually are gradually reduced gradually reaming
To overcome high intensity, high rigidity, poor thermal conductivity, anisotropy, the low problem of interlaminar strength of carbon fiber board, and it is unlikely to multiple
Condensation material plate causes vertical impact, eliminates the phenomenon of the drilling outlet layering of composite panel, prevents asking for import and export splitting
Topic.
Description of the drawings
Fig. 1 is that traditional dagger drills hole schematic diagram.
Fig. 2 is that Chuan Tong Huo bore chamfering schematic diagram.
Fig. 3 is the shaping step drill structural representation of the present invention.
Fig. 4 is the knife drilling of shaping step drill one, the chamfering schematic diagram of the present invention.
Fig. 5 is the drill bit structure schematic diagram of the present invention.
Fig. 6 is the chisel edge face structural representation of the present invention.
Fig. 7 is the structural parameters mark schematic diagram of the apex point conical surface sword of the present invention.
Fig. 8 is the structural parameters mark schematic diagram of second and third conical surface sword of the present invention.
Fig. 9 is the structural parameters mark schematic diagram of the chamfering cone sword of the present invention.
Figure 10 is the back chipping slot structure schematic diagram of the present invention.
Figure 11 is the partial enlargement structural representation of A in Fig. 6.
Figure 12 is the partial cross-section structural representation of the circumference pair sword of the present invention.
Specific embodiment
Below with reference to accompanying drawing 3 to 12 and preferred embodiment to proposed by the present invention a kind of for drilling on carbon fiber board
Shaping step drill be described in greater detail.
The present invention provides a kind of shaping step drill for drilling on carbon fiber board, it include drill bit 1, rose reamer 2 and
Handle of a knife 3, the coaxial connection integrally formed successively of the drill bit 1, rose reamer 2 and handle of a knife 3, and carried out using brait technique
Coating, the life-span for making cutter is obviously improved, and the drill bit 1 is fluted drill, and it includes two twist and with handle of a knife 3
Central axis is centrosymmetric the drill lip portion 11 of setting, in two drill lip portions 11 mutual corresponding rake face and knife back face it
Between surround out it is spiral helicine drilling chip area 12, the drill lip portion 11 include apex point conical surface sword 13, spiral week sword 14 and according to
Secondary the second conical surface sword 15 being connected between the apex point conical surface sword 13 and all swords 14 of spiral and having three pyramidal faces sword 16；The chamfering
Knife 2 includes the chamfering blade 21 of two settings that twist and with the central axis of handle of a knife 3 are centrosymmetric, two chamferings
Mutually spiral helicine chamfering chip area 22, the chamfering blade are surrounded out between corresponding rake face and knife back face on blade 21
21 include that chamfering bores sword 23 and circumference pair sword 24, and the chamfering cone sword 23 is connected to form step with spiral week sword 14
Shape, the drilling chip area 12 is connected with the chamfering chip area 22；The semiapex angle of the apex point conical surface sword 13 be 65.5 °-
66.5 °, the semiapex angle of second conical surface sword 15 is 42 ° -43 °, the semiapex angle of the having three pyramidal faces sword 16 is 26.5 ° -
27.5°；The semiapex angle of the chamfering cone sword 23 is 49.5 ° -50.5 °；The drill lip portion 11 and chamfering blade 21 are right spiral shell
Rotation structure, the drilling chip area 12 and chamfering chip area 22 are right-hand screw structure, the drill lip portion 11 and drilling chip area
12 spiral angle is 18 ° -19 °, and the spiral angle of the chamfering blade 21 and chamfering chip area 22 is 27 ° -28 °.
The present invention in the specific implementation, as shown in figure 4, three drift angles that are gradually reduced with drift angle in the drill lip portion 11
Conical surface sword, and then the gradually reaming during drilling can be easy to, prevent from impacting carbon fiber board, prevent the turnover of drilling
Mouth splitting layering, additionally by the axial rearward end in drill lip portion 11 step-like chamfering blade 21 is connected with, and then by described
The aperture after shoulder in the drill bit 1 pours the hole made of chamfering blade 21 synchronizes chamfering, without the need for extra positioning, chamfering essence
Standard, and the bigger spiral in drill lip portion 11 described in the ratio formed by secondary notching construction between two chamfering blades 21
Angle, makes the anterior angle of the chamfering cone sword 23 bigger, the chamfering can be conducive to bore the cutting of sword 23, by increasing capacitance it is possible to increase to fillet surface
Accuracy.
Further, as shown in Figure 10, the one end being connected with chamfering cone sword 23 on the spiral week sword 14 offers clearly
Root notch 4, because the back chipping notch 4 is common structure, therefore function repeats no more, and the width of the back chipping notch 4 is
0.8mm, depth are less than 0.15mm.
The width of the major first flank 131 of the apex point conical surface sword 13 is 0.7-0.75mm, relief angle is 19 ° -21 °, described
After the second of apex point conical surface sword 13 width of knife face 132 be 2.2-2.4mm, relief angle be 35 ° -39 °, the apex point conical surface sword 13
The relief angle of knife face 133 is 60 ° after 3rd；As shown in figure 8, second conical surface sword 15 and having three pyramidal faces sword 16 (are marked in figure
For the second conical surface sword 15) major first flank relief angle be 19 ° -21 °, second after the relief angle of knife face be 35 ° -39 °；As schemed
Shown in 9, the relief angle of the rear knife face 231 of the chamfering cone sword 23 is 18 ° -19 °.
As shown in figure 5, the apex point conical surface sword 11 surrounds the knife with the point of a knife that second conical surface sword 15 is crossed to form
The central axis of handle 3 rotates a diameter of 4.47-4.49mm of the sweeping arc track to be formed, the circle jump of the apex point conical surface sword 11
Degree tolerance is less than 0.01mm, and second conical surface sword 15 surrounds the knife with the point of a knife that the having three pyramidal faces sword 16 is crossed to form
The central axis of handle 3 rotates a diameter of 6.24-6.26mm of the sweeping arc track to be formed, as shown in figure 3, the spiral Zhou Ren
14 central axis for surrounding the handle of a knife 3 rotate a diameter of 7.90-7.92mm of the sweeping arc surface to be formed, the circumference pair sword
24 central axis for surrounding the handle of a knife 3 rotate a diameter of 11.989-12mm of the sweeping arc surface to be formed, the handle of a knife 3
The circle jump degree tolerance of a diameter of 9.98-10mm, the spiral week sword 14 and circumference pair sword 24 is less than 0.003mm.
As shown in fig. 6, a diameter of 1.95-2.05mm of the trench bottom of the drilling chip area 12 is located on the drill bit 1,
The width of the rear knife face 141 of the spiral week sword 14 is 2.20-2.30mm, the back-off of the rear knife face 141 of the spiral week sword 14
Drop is 0.25mm, and it is in turn over back of the body knot to arrange between the knife back face of the rear knife face 141 to the drill lip portion 11 of the spiral week sword 14
Structure, and as shown in figure 3, the spiral week sword 14 to the drill lip portion 11 knife back face between width be 4.3mm, the present embodiment
By arranging back-off drop between the rear knife face 141 of all swords 14 of spiral and knife back face, can realize will not during drilling
Interference hole inwall, and by back structure is turned over the bits silk in the drilling chip area 12 is guided in the interior hook for turning over back structure
Lower upset, will not stab to the inwall in hole.
As shown in figure 12, the width between the knife back face of the circumference pair sword 24 to the chamfering blade 21 is 5.7mm.
As shown in Figure 11, between the apex point conical surface sword 13 in two drill lip portions 11 formed chisel edge 17 be X-type, institute
State the two ends on drill bit 1 positioned at the chisel edge 17 to offer and cut out mouth 18 (as shown in Fig. 3,5,6,11), and described cut out mouth
Angle between 18 sagittal plane for cutting out direction and the drill bit 1 is 57 °, and the bottom land angle for cutting out mouth 18 is 90 °, institute
The angle stated between the side and the chisel edge 17 that the side cell wall that cuts out mouth 18 and the apex point conical surface sword 13 be crossed to form is
130 °, the distance of side that mouth 18 is crossed to form respectively with two apex point conical surface swords 13 on axis projection is cut out described in two
For 0.15-0.19mm, the side that mouth 18 is crossed to form respectively with the rear knife face of two apex point conical surface swords 13 is cut out described in two
The distance on axis projection be 0.233mm.
The length of the drill bit 1 is the length of 27.175-27.215mm, the drilling chip area 12 and chamfering chip area 22
Sum is 45-45.5mm, and the length sum of the drill bit 1 and rose reamer 2 is 54.5-55.5mm, the drill bit 1, rose reamer 2 with
And the length sum of handle of a knife 3 is 85-85.5mm.
Described in synthesis, technical scheme can complete foregoing invention purpose with sufficiently effective, and the present invention
Structural principle and the principle of work and power have all sufficiently been verified in embodiment, and can reach expected effect and purpose, and
Embodiments of the invention can also enter line translation according to these principles, therefore, the present invention includes all in claim
All replacement contents in the range of being previously mentioned.Any equivalence changes made in scope of the present invention patent, all belong to this case
Within the scope of the claims of application.
Claims (10)
1. a kind of shaping step drill for drilling on carbon fiber board, it is characterised in that：Including drill bit, rose reamer and handle of a knife,
The drill bit, rose reamer and handle of a knife are coaxially sequentially connected, and the drill bit is fluted drill, and it includes two twist and with knife
The central axis of handle is centrosymmetric the drill lip portion of setting, in two drill lip portions mutual corresponding rake face and knife back face it
Between surround out spiral helicine drilling chip area, the drill lip portion includes apex point conical surface sword, spiral week sword and is connected in turn
The second conical surface sword and having three pyramidal faces sword between the apex point conical surface sword and spiral Zhou Ren；The rose reamer includes two helically
Shape and the chamfering blade of the setting that is centrosymmetric with the central axis of handle of a knife, mutual corresponding front knife on two chamfering blades
Spiral helicine chamfering chip area is surrounded out between face and knife back face, the chamfering blade includes that chamfering bores sword and circumference pair
Sword, the chamfering cone sword is connected to form step-like with the spiral Zhou Ren, chip area and the chamfering chip area of drilling
Connection.
2. a kind of shaping step drill for drilling on carbon fiber board according to claim 1, it is characterised in that：The brill
The semiapex angle of sharp conical surface sword is 65.5 ° -66.5 °, and the semiapex angle of second conical surface sword is 42 ° -43 °, the having three pyramidal faces sword
Semiapex angle be 26.5 ° -27.5 °；The semiapex angle of the chamfering cone sword is 49.5 ° -50.5 °.
3. a kind of shaping step drill for drilling on carbon fiber board according to claim 2, it is characterised in that：The brill
Blade and chamfering blade are right-hand screw structure, and the drilling chip area and chamfering chip area are right-hand screw structure, described
The spiral angle of drill lip portion and drilling chip area is 18 ° -19 °, and the spiral angle of the chamfering blade and chamfering chip area is
27°-28°。
4. a kind of shaping step drill for drilling on carbon fiber board according to claim 3, it is characterised in that：The spiral shell
The one end being connected with chamfering cone sword on rotation Zhou Ren offers back chipping notch, and the width of the back chipping notch is 0.8mm, depth
Less than 0.15mm.
5. a kind of shaping step drill for drilling on carbon fiber board according to claim 4, it is characterised in that：The brill
The width of the major first flank of sharp conical surface sword be 0.7-0.75mm, relief angle be 19 ° -21 °, the apex point conical surface sword second after knife
The width in face be 2.2-2.4mm, relief angle be 35 ° -39 °, the apex point conical surface sword the 3rd after knife face relief angle be 60 °；It is described
The relief angle of the major first flank of the second conical surface sword and having three pyramidal faces sword be 19 ° -21 °, after second the relief angle of knife face be 35 ° -
39°；The relief angle of the rear knife face of the chamfering cone sword is 18 ° -19 °.
6. a kind of shaping step drill for drilling on carbon fiber board according to claim 5, it is characterised in that：The brill
The point of a knife that sharp conical surface sword is crossed to form with second conical surface sword rotates the sweeping to be formed circle around the central axis of the handle of a knife
A diameter of 4.47-4.49mm of arc track, the circle jump degree tolerance of the apex point conical surface sword is less than 0.01mm, second conical surface
The point of a knife that sword is crossed to form with the having three pyramidal faces sword rotates the sweeping arc track to be formed around the central axis of the handle of a knife
A diameter of 6.24-6.26mm, the spiral Zhou Ren rotates the sweeping arc surface to be formed around the central axis of the handle of a knife
A diameter of 7.90-7.92mm, the circumference pair sword rotates the straight of the sweeping arc surface to be formed around the central axis of the handle of a knife
Footpath is 11.989-12mm, a diameter of 9.98-10mm of the handle of a knife, the circle jump degree tolerance of the spiral week sword and circumference pair sword
It is less than 0.003mm.
7. a kind of shaping step drill for drilling on carbon fiber board according to claim 6, it is characterised in that：The brill
A diameter of 1.95-2.05mm of the trench bottom of the drilling chip area, the width of the rear knife face of the spiral Zhou Ren are located on head
For 2.20-2.30mm, the back-off drop of the rear knife face of the spiral Zhou Ren is 0.25mm, and the rear knife face of the spiral Zhou Ren is to institute
State and arranged in the width turned between back structure, and the knife back face of the spiral Zhou Ren to the drill lip portion between the knife back face in drill lip portion
Spend for 4.3mm；Width between the knife back face of the circumference pair sword to the chamfering blade is 5.7mm.
8. a kind of shaping step drill for drilling on carbon fiber board according to claim 7, it is characterised in that：Two institutes
It is X-type to state the chisel edge formed between the apex point conical surface sword in drill lip portion, and the two ends on the drill bit positioned at the chisel edge offer
Mouth is cut out, and the angle between the sagittal plane for cutting out direction and the drill bit for cutting out mouth is 57 °, the groove for cutting out mouth
Bottom angle is 90 °, between side that the side cell wall for cutting out mouth and the apex point conical surface sword are crossed to form and the chisel edge
Angle is 130 °, cut out described in two side that mouth is crossed to form respectively with two apex point conical surface swords on axis projection away from
From for 0.15-0.19mm, the side that mouth is crossed to form respectively with the rear knife face of two apex point conical surface swords is cut out described in two
Distance on axis projection is 0.233mm.
9. a kind of shaping step drill for drilling on carbon fiber board according to claim 8, it is characterised in that：The brill
The length of head is 27.175-27.215mm, and the length sum of the drilling chip area and chamfering chip area is 45-45.5mm, institute
It is 54.5-55.5mm that drill bit is stated with the length sum of rose reamer, and the length sum of the drill bit, rose reamer and handle of a knife is 85-
85.5mm。
10. a kind of shaping step drill for drilling on carbon fiber board according to claim 9, it is characterised in that：Drill bit
And the surface of rose reamer is respectively provided with CVD brait coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188103.0A CN106624075B (en) | 2016-12-20 | 2016-12-20 | The molding step drill of the drilling on carbon fiber board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188103.0A CN106624075B (en) | 2016-12-20 | 2016-12-20 | The molding step drill of the drilling on carbon fiber board |
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| Publication Number | Publication Date |
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| CN106624075A true CN106624075A (en) | 2017-05-10 |
| CN106624075B CN106624075B (en) | 2018-12-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262785A (en) * | 2017-06-14 | 2017-10-20 | 东莞艾瑞克精密工具有限公司 | A kind of apex point and the aperture knife tool with apex point |
| CN108817483A (en) * | 2018-09-03 | 2018-11-16 | 中山市园丰精密刃具有限公司 | A kind of brill milling composite cutter |
| WO2021237580A1 (en) * | 2020-05-27 | 2021-12-02 | 上海钰工机电有限公司 | Chamfering device |
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| JPH10230405A (en) * | 1997-02-17 | 1998-09-02 | Kuwabara Seisakusho:Kk | Drill for printed wiring board |
| CN202845870U (en) * | 2012-11-12 | 2013-04-03 | 江西杰浩硬质合金工具有限公司 | Drill used for machining carbon fiber reinforced composite materials and titanium alloy laminated plate |
| CN104493264A (en) * | 2014-09-28 | 2015-04-08 | 上海奥林汽车安全系统有限公司 | Stepped drill integrated with drilling and chamfering functions |
| CN205764073U (en) * | 2016-06-20 | 2016-12-07 | 江苏天工工具有限公司 | Bore ream one dagger to bore |
| CN206263307U (en) * | 2016-12-20 | 2017-06-20 | 江西杰浩硬质合金工具有限公司 | For the shaping step drill of drilling on carbon fiber board |
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| CN107262785A (en) * | 2017-06-14 | 2017-10-20 | 东莞艾瑞克精密工具有限公司 | A kind of apex point and the aperture knife tool with apex point |
| CN107262785B (en) * | 2017-06-14 | 2019-05-17 | 东莞艾瑞克精密工具有限公司 | A kind of apex point and the aperture knife tool with apex point |
| CN108817483A (en) * | 2018-09-03 | 2018-11-16 | 中山市园丰精密刃具有限公司 | A kind of brill milling composite cutter |
| WO2021237580A1 (en) * | 2020-05-27 | 2021-12-02 | 上海钰工机电有限公司 | Chamfering device |
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