CN103998167A - Drill and method for manufacturing drilled product using same - Google Patents
Drill and method for manufacturing drilled product using same Download PDFInfo
- Publication number
- CN103998167A CN103998167A CN201280063710.8A CN201280063710A CN103998167A CN 103998167 A CN103998167 A CN 103998167A CN 201280063710 A CN201280063710 A CN 201280063710A CN 103998167 A CN103998167 A CN 103998167A
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- groove
- drill bit
- cutting portion
- rear end
- ramp
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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
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/14—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for very small holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/406—Flutes, i.e. chip conveying grooves of special form not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The drill of an embodiment of the present invention is provided with a solid cylindrical-shaped cutting section having: a first cutting edge and a second cutting edge, which are provided at the front end of the cutting section so as to be separated from each other; and a first groove and a second groove, which respectively continue to the first cutting edge and the second cutting edge and which helically extend toward the rear end of the cutting section. The cutting section has: an independent region in which the first groove and the second groove are located so as to be separated from each other and which is configured so that, in a side view, the first groove and the second groove approach each other toward the rear end; a partial joint region which continues to the rear end side of the independent region and in which the first groove and the second groove extend parallel to each other while a part of the first groove and a part of the second groove join with each other; and an end region which continues to the rear end side of the partial joint region and in which only one of the rear end of the first groove and the rear end of the second groove is present. A method for manufacturing a drilled product using the drill is provided.
Description
Technical field
The present invention relates to a kind of drill bit and use the manufacture method of the machining thing of this drill bit.
Background technology
In TOHKEMY 2007-307642 communique, disclose technical scheme as described below: the front end in main body possesses in the drill bit of two blades and two torsion grooves that are connected with each blade, and two are reversed grooves and retreated the interflow, position of ormal weight and become a groove at the front end from main body.
Yet, as above-mentioned, make the drill bit at groove interflow have the tendency of easily stopping up in the position at two grooves interflow from the smear metal of each blade generation.And, because the smear metal because stopping up causes collaborating position heating, may make to be thus cut that material is rotten, the inner wall deformation (surface roughness deterioration) of machining hole.In addition, when smear metal is jammed in the position, interflow of groove, the stress (cutting moment of torque) that puts on this position in process increases, and may cause drill bit to be lost.In addition, in the position, interflow of groove, because groove affects each other, groove shape is changed, therefore the smear metal stream by each groove changes, and may damage the inwall of machining hole.
Therefore, seek a kind of manufacture method that excellent hole processability and excellent folding are damaged the drill bit of property and used the machining thing of this drill bit that has concurrently.
Summary of the invention
One of problem of the present invention is, a kind of manufacture method that excellent hole processability and excellent folding are damaged the drill bit of property and used the machining thing of this drill bit that has concurrently is provided.
The related drill bit of embodiments of the present invention possesses columned cutting portion, and this cutting portion has: the first blade and the second blade that are positioned at leading section with being separated from each other; Respectively with described the first blade and described the second blade continuously and towards the first groove and second groove of rearward end spiral extension, described cutting portion has isolated area, local on-ramp and terminal area, at described isolated area, described the first groove and described the second groove are separated from each other and arrange, and under side-looking line of vision along with towards described rearward end and mutually close; The described rearward end side of described local on-ramp and described isolated area is continuous, and in described local on-ramp, a part for a part for described the first groove and described the second groove interflow and described the first groove and described the second groove are parallel; The described rearward end side of described terminal area and described local on-ramp is continuous, and in described terminal area, only has the side in the rear end of described the first groove and the rear end of described the second groove.
The manufacture method of the machining thing that embodiments of the present invention are related comprises: the operation that the related drill bit of above-mentioned embodiment is rotated around rotating shaft; Make described first blade of the described drill bit that rotating and described the second blade and the operation that is cut material and contacts; Described in making, be cut the material operation separated with described drill bit.
Related according to the embodiment of the present invention drill bit, has: the part interflow of a part for the first groove and the second groove and the first groove and the parallel local on-ramp of the second groove; Have continuously and only the terminal area of the side in the rear end of the first groove and the rear end of the second groove with the rearward end side of local on-ramp.So in local on-ramp, two grooves have the part at interflow and the part of each groove shape of maintenance, discharge on the groove width cooperation that therefore smear metal utilization mobile in each groove can be collaborated to broaden by part ground backward end side.In addition, bending stress easily the rearward end side of concentrated cutting portion be in terminal area, because a side groove only extends, therefore can guarantee compared with large and suppress deflection, bending by the core of drill bit is thick.Consequently, can have excellent hole processability and excellent folding damage property concurrently.
Accompanying drawing explanation
Fig. 1 means the figure of the drill bit that the first embodiment of the present invention is related, is (a) unitary side view, is (b) the front end figure that end side is observed in the past.
Fig. 2 is the partial enlarged drawing of the drill bit shown in Fig. 1, (a) means the side view of the leading section side in cutting portion, (b) means the side view in the roughly whole region of cutting portion.
Fig. 3 means the figure of the drill bit shown in Fig. 1, means along each line of Fig. 2 (b) and cuts off the cutaway view of the state after cutting portion, (a) is A-A line cutaway view, is (b) B-B line cutaway view.
Fig. 4 means the figure of the drill bit shown in Fig. 1, means along each line of Fig. 2 (b) and cuts off the cutaway view of the state of cutting portion, (a) is C-C line cutaway view, is (b) D-D line cutaway view, is (c) E-E line cutaway view.
Fig. 5 means the side view in the roughly whole region of the cutting portion in the related drill bit of the second embodiment of the present invention, is the figure that is equivalent to Fig. 2 (b).
Fig. 6 means the side view in the roughly whole region of the cutting portion in the related drill bit of the 3rd embodiment of the present invention, is the figure that is equivalent to Fig. 2 (b).
Fig. 7 is the B-B line cutaway view of the drill bit shown in Fig. 6.
Fig. 8 means the side view in the roughly whole region of the cutting portion in the related drill bit of the 4th embodiment of the present invention, is the figure that is equivalent to Fig. 2 (b).
Fig. 9 (a)～(c) mean synoptic diagram of the manufacture method of the machining thing that embodiments of the present invention are related.
Figure 10 means the summary description figure of the variation of the drill bit slot part that embodiments of the present invention are related.
The specific embodiment
< drill bit >
(the first embodiment)
Below, with reference to Fig. 1～Fig. 4, first embodiment related to drill bit of the present invention is elaborated.
As shown in Fig. 1 (a), the drill bit 1 of present embodiment roughly possesses the main part (base end part) 20 of being controlled by main shaft of the rotation of work mechanism etc., at the cutting portion 10 of a distolateral setting of main part 20.Main part 20 is positions of designing according to the shape of the rotating shaft of work mechanism.Cutting portion 10 is and the position that is cut material and contacts.It should be noted that, the arrow a in Fig. 1 (a) represents the direction of rotation of drill bit 1.
Cutting portion 10 is in being cut the machining of material, to have the position of Main Function.Illustrate, as shown in Fig. 1 (b) and Fig. 2 (a), the cutting portion 10 of present embodiment has two blades 11 (the first blade 11a and the second blade 11b) of the setting of being separated from each other at leading section 10a.That is, the drill bit 1 of present embodiment is two-point bit.
In addition, the cutting portion 10 of present embodiment and two blades 11 have at the periphery 10c of cutting portion 10 two grooves 12 (the first groove 12a and the second groove 12b) that are set to rearward end 10b from leading section 10a accordingly.It should be noted that, the periphery 10c of cutting portion 10 is the positions that are illustrated by the broken lines in Fig. 1 (b), Fig. 3 and Fig. 4.
In addition, in the present embodiment, the shape of cutting portion 10 is cylindric.That is,, in the section vertical with its central shaft O of the cutting portion 10 of present embodiment, when the diameter at the position beyond the diameter of leading section 10a is T1, leading section 10a is T2, T1 and T2 have the relation of T1=T2.In addition, in the section vertical with central shaft O of the cutting portion 10 of present embodiment, its diameter is constant from leading section 10a to rearward end 10b.The central shaft O of cutting portion 10 is the axles that run through leading section 10a and rearward end 10b, refers to and is observing the state of cutting portion 10 from leading section 10a side, becomes the axle of rotating shaft when making cutting portion 10 rotation.It should be noted that, in the present embodiment, the central shaft O of cutting portion 10 is positioned at the position identical with the rotating shaft of drill bit 1 described later.So the rotating shaft of drill bit 1 described later is used the Reference numeral identical with the central shaft O of cutting portion 10 and describes.
Two blades 11 that cutting portion 10 has, as shown in Fig. 1 (b) and Fig. 2 (a), are formed at the leading section 10a of cutting portion 10.In the present embodiment, the first blade 11a and the second blade 11b be take the central shaft O (axis) of cutting portion 10 and are configured to the Rotational Symmetry of 180 ° as benchmark.That is, the first blade 11a and the second blade 11b are toward each other in central shaft O Double Symmetry.In other words, when observing cutting portion 10 from leading section 10a side, the first blade 11a and the second blade 11b be take the central shaft O of cutting portion 10 and are point symmetry as benchmark.By configuring in the above described manner the first blade 11a and the second blade 11b, can improve and directly enter stability to what be cut that material adds man-hour.
In addition, in the present embodiment, as shown in Fig. 1 (b) and Fig. 2 (a), in the most forward end of cutting portion 10,10a side is provided with chisel edge 11c (11c1,11c2).Chisel edge 11c and the first blade 11a and the second blade 11b have the effect of slicing material in the lump.
The main purpose of two grooves 12 is the chip discharge being generated by two blades 11.Specifically, as shown in Fig. 1 (b) and Fig. 2 (a), the first groove 12a and the second groove 12b are continuous with the first blade 11a and the second blade 11b respectively, and from the leading section 10a of cutting portion 10 backward end 10b (main part 20 sides) extend in the shape of a spiral.In the present embodiment, the groove width of the first groove 12a is identical with the groove width of the second groove 12b.In addition, in the present embodiment, the degree of depth of the degree of depth of the first groove 12a and the second groove 12b is at least constant except near terminal area Z described later.When machining, the smear metal being formed by the first blade 11a is discharged by end 10b side with continuous the first groove 12a of the first blade 11a and backward substantially, and the smear metal being formed by the second blade 11b is discharged by end 10b side with continuous the second groove 12b of the second blade 11b and backward substantially.
In addition, as shown in Fig. 1 (b), the smear metal being formed by the chisel edge 11c1 continuous with the first blade 11a and by the smear metal forming with the continuous chisel edge 11c2 of the second blade 11b via with corresponding two of arranging of each chisel edge 11c after the second rear knife face 14b in knife face 14 (major first flank 14a and the second rear knife face 14b) and by the first groove 12a and the second groove 12b backward end 10b side discharge.It should be noted that, rear knife face 14 has to be avoided and the effect that is cut material and contacts to reduce cutting resistance.
In addition, as shown in Fig. 2 (a), the region that does not form groove 12 in the periphery 10c of cutting portion 10 exists as land 16 (the first land 16a and the second land 16b), and bit diameter (external diameter) is maintained the size forming before groove 12.That is,, at analyse and observe line of vision under vertical with central shaft O, land 16 is the positions that are equivalent to the periphery 10c of cutting portion 10, is circular-arc.The first land 16a and the first groove 12a arrange accordingly, and the second land 16b and the second groove 12b arrange accordingly.
And in the present embodiment, as shown in Fig. 2 (b), cutting portion 10 has isolated area X, local on-ramp Y and terminal area Z from leading section 10a side successively towards rearward end 10b side.It should be noted that, each side view of the D1～D4 in Fig. 2 (b) means with respect to paper and from the upper figure that observes successively the drill bit 1 Fig. 1 (b) from direction shown in each arrow of D1, D2, D3 and D4.Each arrow of D1～D4 is illustrated in the direction contrary with the direction of rotation of the drill bit 1 shown in arrow a the direction every 90 °.This point is also identical in the following embodiments.
Isolated area X is that the first groove 12a and the second groove 12b are separated from each other and arrange and be shown under side-looking line of vision along with towards rearward end 10b and mutual close region as Fig. 2 (b) as shown in Fig. 2 (b) and Fig. 3 (a).It should be noted that, side-looking line of vision represents to observe from being equivalent to the periphery 10c side of the cutting portion 10 of side the state of cutting portion 10.
In addition, in the present embodiment, as shown in Fig. 3 (a), in the section vertical with central shaft O of cutting portion 10, the the first groove 12a that is positioned at isolated area X is mutually different shapes from the second groove 12b, with respect to this, being positioned at than the first groove 12a of the forward end of isolated area X 10a side and the second groove 12b is same shape.
In addition, in the present embodiment, in isolated area X, the torsion angle of the first groove 12a is less than the torsion angle of the second groove 12b.For example,, as long as the torsion angle of the first groove 12a is made as to 15～35 °, the torsion angle of the second groove 12b is made as to 40～60 °.So, by the torsion angle of the first groove 12a is set smallerly, can guarantee the rigidity of isolated area X.
It should be noted that, in the present embodiment, in isolated area X, the torsion angle of the second groove 12b is constant.In addition, in the 10aCe region, forward end than isolated area X, the torsion angle of the torsion angle of the first groove 12a and the second groove 12b does not limit especially, for example, be preferably set to identical.
As shown in Fig. 2 (b) and Fig. 4 (a), local on-ramp Y be with the rearward end 10b side of isolated area X continuously, a part of the first groove 12a is collaborated with a part of the second groove 12b and the first groove 12a and the parallel region of the second groove 12b.It should be noted that, Fig. 3 (b) means the figure of the borderline region between isolated area X and local on-ramp Y.
In the present embodiment, in local on-ramp Y, one end 12b1 of one end 12a1 of the first groove 12a and one end 12a1 in other end 12a2 and the second groove 12b and the interflow of one end 12b1 in other end 12b2.That is, in the present embodiment, in local on-ramp Y, the local interflow of the first groove 12a and the second groove 12b.At this, local interflow refers to that two structure positions not exclusively collaborate, local integrated state in the scope that can play respectively the principal character object having separately.In other words, although referring to the wall that is positioned at groove between the two, local interflow maintains the state that smear metal that the height of regulation discharges by inside each other can be exchanged visits.
In addition, in the present embodiment, the degree of depth of the first groove 12a in local on-ramp Y and the degree of depth of the second groove 12b are identical.It should be noted that, the degree of depth of groove 12 refers to the distance from the periphery 10c of cutting portion 10 to the bottom of groove 12.Thus, the diameter W of the inscribed circle 15 shown in Fig. 4 (a) can be guaranteed compared with suppressing greatly deflection, bending.It should be noted that, in the situation that the shape of two grooves 12 is mutually different, be not defined as same depth, as long as be the identical in fact degree of depth.
It should be noted that, inscribed circle 15 refers to the maximum circle that can form in the section vertical with central shaft O.In addition, the core that the diameter W of inscribed circle 15 is equivalent to drill bit 1 is thick, the thick index that becomes the rigidity of metering drill bit 1 of core of this drill bit 1.
In addition, in the present embodiment, the groove width of the first groove 12a in local on-ramp Y and the groove width of the second groove 12b are identical.; as shown in Fig. 4 (a), by linking straight line F that central shaft O forms with interflow, the part 12c of portion of a part of the first groove 12a and a part of the second groove 12b, extend to the some 12d of periphery 10c to the distance along periphery 10c of the other end 12a2 of the first groove 12a, 12d is identical to the distance along periphery 10c of the other end 12b2 of the second groove 12b with putting.Thus, because interflow, the part 12c of portion is positioned at local central authorities of collaborating groove, therefore can suppress smear metal easily to concentrate on a side groove and produce the situation that smear metal is stopped up, by smear metal being scattered in appropriateness under the state of two grooves 12, discharge, can improve chip discharge.It should be noted that, the result of the experiment of being undertaken by inventor is that the judgement groove width of the first groove 12a and the groove width of the second groove 12b are preferably set as respectively 40～60% scope.
In addition, in the present embodiment, as shown in Fig. 4 (a), in local on-ramp Y in the section vertical with central shaft O of cutting portion 10, when the distance between interflow, the part 12c of portion and central shaft O is distance between L1, central shaft O and the periphery 10c of cutting portion 10 while being L2, L1 and L2 have the relation of (1/3) L2≤L1≤L2.In addition, in the present embodiment, in above-mentioned section, the diameter W of distance L 1 and inscribed circle 15 has the relation of L1 < W.According to said structure, the wall that is positioned at above-mentioned groove between the two can maintain the height of regulation.
In addition, in the present embodiment, as shown in Fig. 2 (b), in local on-ramp Y, the first groove 12a compares with the second groove 12b and is positioned at 10aCe position, forward end.
As shown in Fig. 2 (b) and Fig. 4 (b), terminal area Z be with the rearward end 10b side of local on-ramp Y continuously and only have the region of the side in the rear end 12a3 of the first groove 12a and the rear end 12b3 of the second groove 12b.In the present embodiment, in the Z of terminal area, only have the rear end 12a3 of the first groove 12a.
In addition, in the present embodiment, when from leading section 10a side perspective cutting portion 10, the rear end 12b3 of the rear end 12a3 of the first groove 12a and the second groove 12b be take the central shaft O of cutting portion 10 and is point symmetry as benchmark.
And Fig. 4 (c) illustrates the position of the rear end 12a3 that is equivalent to the first groove 12a, it is the cutaway view under the state that finishes of groove 12.In this case, inscribed circle 15 is consistent with land 16 periphery each other.
The drill bit 1 related according to the present embodiment with above such structure, in local on-ramp Y, because two grooves 12 have the part at interflow and keep the part of each groove shape, therefore can by the mobile smear metal cooperation ground of each groove 12 backward end 10b side discharge.In addition, rearward end 10b side at the easy concentrated cutting portion 10 of bending stress is in the Z of terminal area, because a side's only groove extends, therefore can the core of drill bit 1 is thick, be that the diameter W of the inscribed circle 15 shown in Fig. 3 and Fig. 4 guarantees compared with large and suppress deflection, bending.Consequently, the related drill bit 1 of present embodiment can have excellent hole processability and excellent folding damage property concurrently.
In addition, the drill bit 1 related according to present embodiment, in local on-ramp Y, the first groove 12a is positioned at than the second 10aCe position, the forward end of groove 12b, in the Z of terminal area, only have the rear end 12a3 of the first groove 12a in the rear end 12a3 of the first groove 12a and the rear end 12b3 of the second groove 12b, therefore, be positioned at the leading section 10a side of cutting portion 10 and the first groove 12a that smear metal is passed through at first and extend to the position by rearward end 10b side than the second groove 12b, can bring into play excellent chip discharge thus.For example, the material that is imbued with ductility easily can be become to the such smear metal integral body of aluminium, the Copper Foil of longer smear metal from being cut the surface of material and drawing laterally and by its discharge.
It should be noted that, in the drill bit 1 of present embodiment, for example, the external diameter of blade 11 is not enough 0.6mm, is preferably the path drill bit of not enough 0.3mm, can be suitable to deep hole machining drill bit.Especially the drill bit 1 of present embodiment, is suitable for being easily subject to the perforate processing that is cut material etc. of fire damage.In addition, in the drill bit 1 of present embodiment, for example, when the length of axis (from blade 11 till the length that groove 12 finishes) be L, diameter (external diameter of blade 11) while being D, can be suitable for L/D is more than 5 deep hole machining.
(the second embodiment)
Next, with reference to Fig. 5, the related drill bit of the second embodiment of the present invention is elaborated.It should be noted that, in Fig. 5, also the description thereof will be omitted sometimes the identical component part of Fig. 1～Fig. 4 with above-mentioned to be marked to identical Reference numeral.It should be noted that, for the drill bit of present embodiment, the basic structure of Fig. 1 etc. is identical with the drill bit 1 of the first embodiment, thus the difference of the drill bit 1 of main explanation and the first embodiment, and the explanation of omitting duplicate contents.
In the present embodiment, different from above-mentioned embodiment, as shown in Figure 5, in local on-ramp Y, the first groove 12a is positioned at than the second 10aCe position, the forward end of groove 12b, and in the Z of terminal area, only have the rear end 12b3 of the second groove 12b in the rear end 12a3 of the first groove 12a and the rear end 12b3 of the second groove 12b.Thus, the rear end 12b3 of the second groove 12b extends to than the rear end 12a3 of the first groove 12a of leading section 10a side that is positioned at cutting portion 10 more by the position of rearward end 10b side.Owing to staggering and arranging before and after the first groove 12a and the second groove 12b, therefore, by the smear metal being generated by two blades 11 is similarly discharged from both, can suppress smear metal and be wound in cutting portion 10.
Other structures drill bit 1 related with the first above-mentioned embodiment is identical, therefore the description thereof will be omitted.
(the 3rd embodiment)
Next, with reference to Fig. 6 and Fig. 7, the related drill bit of the 3rd embodiment of the present invention is elaborated.It should be noted that, in Fig. 6 and Fig. 7, also the description thereof will be omitted sometimes the component part identical with above-mentioned Fig. 1～Fig. 5 to be marked to identical Reference numeral.For the drill bit of present embodiment, because the basic structure of Fig. 1 etc. is identical with the drill bit 1 of the first embodiment, thus the difference of main explanation and the drill bit 1 of the first embodiment, and the explanation of omitting duplicate contents.
In the present embodiment, different from above-mentioned embodiment, as shown in Figure 6, in local on-ramp Y, the first groove 12a is positioned at the position by rearward end 10b side than the second groove 12b, and in the Z of terminal area, only have the rear end 12a3 of the first groove 12a in the rear end 12a3 of the first groove 12a and the rear end 12b3 of the second groove 12b.Thus, with the second embodiment in the same manner, the rear end 12a3 of the first groove 12a extends to than the rear end 12b3 of the second groove 12b of leading section 10a side that is positioned at cutting portion 10 more by the position of rearward end 10b side.Owing to staggering and arranging before and after the first groove 12a and the second groove 12b, therefore, by the smear metal being generated by two blades 11 is similarly discharged from both, can suppress smear metal and be wound in cutting portion 10.
In addition, in the present embodiment, in isolated area X, the torsion angle of the first groove 12a is than the torsion angle of the second groove 12b large (with reference to Fig. 7).For example,, as long as the torsion angle of the first groove 12a is made as to 50～70 °, the torsion angle of the second groove 12b is made as to 40～60 °.It should be noted that, in the present embodiment, in isolated area X, the torsion angle of the second groove 12b is constant.
Other structures drill bit 1 related with the first above-mentioned embodiment is identical, therefore the description thereof will be omitted.
(the 4th embodiment)
Next, with reference to Fig. 8, the related drill bit of the 4th embodiment of the present invention is elaborated.It should be noted that, in Fig. 8, also the description thereof will be omitted sometimes the component part identical with above-mentioned Fig. 1～Fig. 7 to be marked to identical Reference numeral.It should be noted that, for the drill bit of present embodiment, the basic structure of Fig. 1 etc. is identical with the drill bit 1 of the first embodiment, thus the difference of the drill bit 1 of main explanation and the first embodiment, and the explanation of omitting duplicate contents.
In the present embodiment, different from above-mentioned embodiment, as shown in Figure 8, in local on-ramp Y, the first groove 12a is positioned at the position by rearward end 10b side than the second groove 12b, and in the Z of terminal area, only have the rear end 12b3 of the second groove 12b in the rear end 12a3 of the first groove 12a and the rear end 12b3 of the second groove 12b.Thus, with the first embodiment in the same manner, be positioned at the leading section 10a side of cutting portion 10 and the second groove 12b that smear metal is passed through at first and extend to the position by rearward end 10b side than the first groove 12a, therefore can bring into play excellent chip discharge.For example, the material that is imbued with ductility easily can be become to the such smear metal integral body of aluminium, the Copper Foil of longer smear metal from being cut the surface of material and drawing laterally and by its discharge.
Other structures drill bit 1 related with above-mentioned the first embodiment is identical, therefore the description thereof will be omitted.
The manufacture method > of < machining thing
Next, use Fig. 9 to describe the manufacture method of the related machining thing of embodiments of the present invention.In the present embodiment, take the related drill bit 1 of the first above-mentioned embodiment describes as example.
The manufacture method of the machining thing of present embodiment comprises the operation of following (i)～(iv).
(i) as shown in Fig. 9 (a), ready be cut material 100 above configure the operation of drill bit 1.
(ii) then, make drill bit 1 centered by rotating shaft O to arrow a direction rotation, drill bit 1 is moved to arrow b direction, make to be cut material 100 near the operation of drill bit 1.
(iii) as shown in Fig. 9 (b), by making drill bit 1 further near being cut material 100, the first blade 11a and the second blade 11b of the drill bit 1 that rotating are contacted with the desirable position that is cut material 100 surfaces, and be cut material 100 and form the operation of through holes 101.
(iv) as shown in Fig. 9 (c), drill bit 1 is moved to arrow c direction, make drill bit 1 operation separated with being cut material 100.
By carrying out the machining thing 110 shown in shop drawings 9 (c) through above each such procedure.Drill bit 1 can be brought into play excellent hole processability.
It should be noted that, for example, can be fixed on the workbench of the work mechanism that drill bit 1 is installed being cut material 100, make drill bit 1 under the state of rotation near being cut material 100, carry out thus the operation of (ii).In addition, in the operation of (ii), be cut material 100 relatively close with drill bit 1, for example, also can make to be cut material 100 near drill bit 1.
In (iii) operation, from obtaining the viewpoint of good machined surface, a part of region that is preferably set to the rearward end 10b side in the cutting portion 10 of drill bit 1 does not connect and is cut material 100.That is,, by making the region, edge (margin) that this part region is used as chip discharge bring into play function, can play excellent chip discharge.
(iv) operation of operation and above-mentioned (ii) in the same manner, is cut material 100 relatively separated with drill bit 1, for example, also can make to be cut material 100 from drill bit 1 separation.
It should be noted that, when will be to being cut material 100 and carrying out repeatedly machining shown in above-mentioned, for example, in the time will being cut a plurality of through hole 101 of material 100 formation to one, repeat to make the first blade 11a of drill bit 1 and the operation that the second blade 11b contacts with the diverse location that is cut material 100 under the state that makes drill bit 1 keep rotating.
Above, although exemplify several embodiments involved in the present invention, the present invention is not limited to above-mentioned embodiment, only otherwise depart from purport of the present invention, just can be changed arbitrarily, and this is self-evident.
For example, the shape of cutting portion 10 is not limited to the structure of above-mentioned embodiment, but can adopt the normally used shape of those skilled in the art.For example, cutting portion 10 can be also core thick, be that the diameter W of inscribed circle 15 becomes large such taper towards rearward end 10b from leading section 10a.In addition, cutting portion 10 can be also that bit diameter (external diameter) is along with becoming large from leading section 10a towards rearward end 10b or tilting with diminishing.In addition, also can undercut portions be set at cutting portion 10.
In addition, in the above-described embodiment, although the degree of depth of the degree of depth of the first groove 12a and the second groove 12b is made as constant, also can instead be configured to, at least one party in cutting portion 10 in the degree of depth of the degree of depth of the first groove 12a and the second groove 12b changes.Specifically, as shown in figure 10, cutting portion 10 from leading section 10a side till the region of isolated area X, along with increase the degree of depth of groove 12, the i.e. degree of depth 12a4 of the first groove 12a and the degree of depth 12b4 of the second groove 12b towards rearward end 10b side, and till can arriving local on-ramp Y.Thus, can improve chip discharge and make hole site stable accuracy.It should be noted that, in this variation shown in Figure 10, the structure that the degree of depth 12a4 of the first groove 12a and the degree of depth 12b4 of the second groove 12b change is shown.In this case, along with the regulation position Y1 from local on-ramp Y reduces the degree of depth of groove 12 towards rearward end 10b side, can return to thus the degree of depth of the groove 12 in leading section 10a.Thus, due to can core is thick, be that the diameter W of inscribed circle 15 returns to the size in leading section 10a, therefore can keep the rigidity of drill bit 1.At this, the degree of depth of groove 12 is preferably the degree of depth 12a4 of the first groove 12a and the degree of depth 12b4 of the second groove 12b is changed remaining under identical state.
In addition, although at cutting portion 10, gap is not set in the above-described embodiment, also can be at the leading section 10a of cutting portion 10 the formation gap, position except blade 11.And, also gap can be extended to the region of rearward end 10b side from leading section 10a.Gap has reduces drill bit 1 and the effect contacting being cut between the inwall of machining hole of material, and can contribute to the raising of chip discharge.
In addition, in the above-described embodiment, although the groove width of the first groove 12a and the second groove 12b is configured to identical, also can be instead, in local on-ramp Y, make the groove width of the side who is positioned at leading section 10a side in the first groove 12a and the second groove 12b be greater than the opposing party's groove width.Thus, larger smear metal can be discharged effectively via the groove 12 of leading section 10a side.
Claims (18)
1. a drill bit, wherein,
Described drill bit possesses columned cutting portion, and this cutting portion has: the first blade and the second blade that are positioned at leading section with being separated from each other; Respectively with described the first blade and described the second blade continuously and towards the first groove and second groove of rearward end spiral extension,
Described cutting portion has isolated area, local on-ramp and terminal area,
At described isolated area, described the first groove and described the second groove are separated from each other and arrange, and under side-looking line of vision along with towards described rearward end and mutually close;
The described rearward end side of described local on-ramp and described isolated area is continuous, and in described local on-ramp, a part for a part for described the first groove and described the second groove interflow and described the first groove and described the second groove are parallel;
The described rearward end side of described terminal area and described local on-ramp is continuous, and in described terminal area, only has the side in the rear end of described the first groove and the rear end of described the second groove.
2. drill bit according to claim 1, wherein,
Described cutting portion from described leading section side till the region of described isolated area, at least one party's in described the first groove and described the second groove take the degree of depth that the periphery of described cutting portion is benchmark along with becoming greatly towards described rearward end side, and the increase of the described degree of depth is until described local on-ramp.
3. drill bit according to claim 1 and 2, wherein,
At least one party's in described the first groove and described the second groove take the degree of depth that the periphery of described cutting portion is benchmark along with the regulation position from described local on-ramp diminishes towards described rearward end side.
4. according to the drill bit described in any one in claims 1 to 3, wherein,
Described the first groove and described the second groove to take the degree of depth that the periphery of described cutting portion is benchmark identical.
5. according to the drill bit described in any one in claim 1 to 4, wherein,
When having an X-rayed described cutting portion from described leading section side, take the central shaft of described cutting portion and be point symmetry as benchmark in the rear end of the rear end of described the first groove and described the second groove.
6. according to the drill bit described in any one in claim 1 to 5, wherein,
When observing described cutting portion from described leading section side, described the first blade and described the second blade be take the central shaft of described cutting portion and are point symmetry as benchmark.
7. according to the drill bit described in any one in claim 1 to 6, wherein,
In the section vertical with central shaft of described cutting portion, than described isolated area, by described the first groove and described second groove of described leading section side, be same shape, and described the first groove that is positioned at described isolated area and described the second groove are mutual different shapes.
8. according to the drill bit described in any one in claim 1 to 7, wherein,
In described local on-ramp, described the first groove is positioned at the position by described leading section side than described the second groove,
In described terminal area, only have the rear end of described the first groove in the rear end of described the first groove and the rear end of described the second groove.
9. according to the drill bit described in any one in claim 1 to 7, wherein,
In described local on-ramp, described the first groove is positioned at the position by described leading section side than described the second groove,
In described terminal area, only have the rear end of described the second groove in the rear end of described the first groove and the rear end of described the second groove.
10. drill bit according to claim 8 or claim 9, wherein,
In described isolated area, the torsion angle of described the first groove is less than the torsion angle of described the second groove.
11. according to the drill bit described in any one in claim 1 to 7, wherein,
In described local on-ramp, described the first groove is positioned at the position by described rearward end side than described the second groove,
In described terminal area, only have the rear end of described the first groove in the rear end of described the first groove and the rear end of described the second groove.
12. according to the drill bit described in any one in claim 1 to 7, wherein,
In described local on-ramp, described the first groove is positioned at the position by described rearward end side than described the second groove,
In described terminal area, only have the rear end of described the second groove in the rear end of described the first groove and the rear end of described the second groove.
13. according to the drill bit described in claim 11 or 12, wherein,
In described isolated area, the torsion angle of described the first groove is greater than the torsion angle of described the second groove.
14. according to the drill bit described in any one in claim 1 to 13, wherein,
In described isolated area, the torsion angle of described the second groove is constant.
15. according to the drill bit described in any one in claim 1 to 14, wherein,
In described local on-ramp, the groove width of the side who is positioned at described leading section side in described the first groove and described the second groove is greater than the opposing party's groove width.
16. according to the drill bit described in any one in claim 1 to 15, wherein,
In the vertical section of the central shaft with described cutting portion in described local on-ramp, when interflow, the part portion of a part for described the first groove and a part for described the second groove and the distance between described central shaft are distance between L1, described central shaft and the periphery of described cutting portion while being L2, described L1 and described L2 have the relation of (1/3) L2≤L1≤L2.
17. according to the drill bit described in any one in claim 1 to 15, wherein,
In the vertical section of the central shaft with described cutting portion in described local on-ramp, when interflow, the part portion of a part for described the first groove and a part for described the second groove and the distance between described central shaft are L1, inscribe diameter of a circle while being W, described L1 and described W have the relation of L1 < W.
The manufacture method of 18. 1 kinds of machining things, wherein,
The manufacture method of described machining thing comprises:
Make the operation that in claim 1 to 17, the drill bit described in any one rotates around rotating shaft;
Make described first blade of the described drill bit that rotating and described the second blade and the operation that is cut material and contacts;
Described in making, be cut the material operation separated with described drill bit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011288077 | 2011-12-28 | ||
| JP2011-288077 | 2011-12-28 | ||
| PCT/JP2012/066516 WO2013099326A1 (en) | 2011-12-28 | 2012-06-28 | Drill and method for manufacturing drilled product using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103998167A true CN103998167A (en) | 2014-08-20 |
| CN103998167B CN103998167B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280063710.8A Active CN103998167B (en) | 2011-12-28 | 2012-06-28 | Drill bit and use the manufacture method of machining thing of this drill bit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5845288B2 (en) |
| CN (1) | CN103998167B (en) |
| WO (1) | WO2013099326A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2015029963A1 (en) * | 2013-08-26 | 2017-03-02 | 京セラ株式会社 | Drill and method of manufacturing cut product using the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752911B (en) * | 2013-12-31 | 2017-08-25 | 深圳市金洲精工科技股份有限公司 | A kind of microbit and its processing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6478711A (en) * | 1987-09-21 | 1989-03-24 | Mitsubishi Metal Corp | Twist drill |
| JP2001322018A (en) * | 2000-05-19 | 2001-11-20 | Toshiba Tungaloy Co Ltd | Drill |
| JP2007307642A (en) * | 2006-05-17 | 2007-11-29 | Sumitomo Electric Hardmetal Corp | Drill |
| WO2010125881A1 (en) * | 2009-04-27 | 2010-11-04 | 京セラ株式会社 | Drill and method of cutting material to be cut using same |
| CN102476209A (en) * | 2010-11-22 | 2012-05-30 | 佑能工具株式会社 | Drilling tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM412822U (en) * | 2011-05-10 | 2011-10-01 | Topoint Technology Co Ltd | Improved chip-discharge structure of drill |
-
2012
- 2012-06-28 WO PCT/JP2012/066516 patent/WO2013099326A1/en active Application Filing
- 2012-06-28 JP JP2013551495A patent/JP5845288B2/en active Active
- 2012-06-28 CN CN201280063710.8A patent/CN103998167B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6478711A (en) * | 1987-09-21 | 1989-03-24 | Mitsubishi Metal Corp | Twist drill |
| JP2001322018A (en) * | 2000-05-19 | 2001-11-20 | Toshiba Tungaloy Co Ltd | Drill |
| JP2007307642A (en) * | 2006-05-17 | 2007-11-29 | Sumitomo Electric Hardmetal Corp | Drill |
| WO2010125881A1 (en) * | 2009-04-27 | 2010-11-04 | 京セラ株式会社 | Drill and method of cutting material to be cut using same |
| CN102476209A (en) * | 2010-11-22 | 2012-05-30 | 佑能工具株式会社 | Drilling tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2015029963A1 (en) * | 2013-08-26 | 2017-03-02 | 京セラ株式会社 | Drill and method of manufacturing cut product using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5845288B2 (en) | 2016-01-20 |
| WO2013099326A1 (en) | 2013-07-04 |
| CN103998167B (en) | 2016-08-24 |
| JPWO2013099326A1 (en) | 2015-04-30 |
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