CN102380630B - Back boring cutting tool - Google Patents
Back boring cutting tool Download PDFInfo
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- CN102380630B CN102380630B CN201110054824.3A CN201110054824A CN102380630B CN 102380630 B CN102380630 B CN 102380630B CN 201110054824 A CN201110054824 A CN 201110054824A CN 102380630 B CN102380630 B CN 102380630B
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Abstract
The present invention provides a back boring cutting tool with a simple structure, for enabling cutter to appear and disappear along the axial direction and inhibiting the rotating resistance of the inner peripheral face relative to a lower hole. the back boring mandrel (11) comprises a main shaft (12) extending along the axis, provided with a fixing member mounted at the rear end in the axis direction; a cutter (13), supported at the front end in the axis direction of the main shaft in a rotatable manner, with a withdrawing position falling along the main shaft and a protrusion position vertical to the main shaft; a guide sleeve (16), which is a barrel-shaped body capable of sliding in axis direction at the periphery of the main shaft, wherein a window unit (18) is provided at the side surface of the barrel-shaped body, the cutter (13) is held in the withdrawing position by covering the cutter at the rear end position in the axis direction, and the cutter is enabled to be protruded towards the outside in the radial direction from the window to be in a protrusion position by exposing the cutter from the window at the front end position in the axis direction; and a lower friction portion (16s) arranged in an area contacting with the lower hole of a workpiece to be machined, on the outer peripheral face of the guide sleeve for reducing the friction with the workpiece.
Description
Technical field
The present invention relates to the cutting element that one is mounted to the fixing tool (holder) of lathe (machine tool), especially relate to after the guide hole that one is inserted into workpiece (work), cutter is haunted and the rear side of guide hole is bestowed to the back boring cutting tool of bore hole (borehole) processing.
Background technology
Back of the body Boring is with NC (Numerical Control; Numerical Control) processing machine etc. is pre-formed and runs through the surface of workpiece and the lower hole at the back side, by be arranged on lathe fixing tool back of the body bore hole axle (arbor) from face side be inserted into workpiece hole, by outstanding from the back side of workpiece the front end of back of the body bore hole axle, cutter is outstanding towards radial dilatation from the front end of back of the body bore hole axle, and bore hole is bestowed in the back side of workpiece.After back of the body Boring finishes, cutter is submerged to the front end of back of the body bore hole axle, extract back of the body bore hole axle from lower hole out.
Automatically to implement the existing various technology of the technology of haunting of cutter in this back of the body Boring.For example, Japanese kokai publication hei 11-156612 communique (patent documentation 1), using the pressure of cooling fluid as drive source, makes cutter outstanding from axle leading section towards radial outside, or cutter is submerged towards the radially inner side of axle leading section.
Patent documentation 1: Japanese kokai publication hei 11-156612 communique
Summary of the invention
(problem that invention will solve)
But, as as described in prior art, make bar (rod) that cutter moves etc. because the back of the body bore hole axle that uses the pressure of cooling fluid that cutter is come in and gone out need to be directed to hydraulic pressure cylinder barrel (cylinder) chamber of tool interior, changes hydraulic rotation into straight-line piston (piston) and link piston and cutter, therefore complex structure and cost are high.
In addition, in the back of the body bore hole axle of prior art, it is conventionally selected that to make to carry on the back the outside dimension of bore hole axle more smaller than the internal diameter size in lower hole, and carry on the back Boring under the situation that can not produce rotational resistance between the inner peripheral surface in lower hole and the outer diametric plane of back of the body bore hole axle, and can make to carry on the back bore hole axle easily inserts or extracts out in lower hole, but in fact, have the rotational resistance produce Boring between the inner peripheral surface in lower hole and the outer peripheral face of the back of the body bore hole axle time, or the situation welding.
Because above-mentioned problem, the object of the present invention is to provide a kind ofly can make cutter towards radially haunting and can reducing the back boring cutting tool of the rotational resistance of the inner peripheral surface to lower hole simply to construct.
(technical scheme of technical solution problem)
In order to reach object, back boring cutting tool of the present invention possesses and has: main shaft (main shaft), along Axis Extension, and has axis direction rearward end and can be mounted to the inserted-shape of the fixing tool of lathe; Cutter, is supported on the axis direction leading section of main shaft in rotating mode, and is set as the collecting position of putting upside down along main shaft and the extrusion position erecting with respect to main shaft; Suppress member, cutter is rotated and erect and suppress to extrusion position; Guiding sleeve (guide sleeve), for can be in the axis direction outer Zhou Dynasty of the main shaft cylindrical body arranging of sliding, and there is window portion in the side of cylindrical body, by cover cutter and cutter is remained on to collecting position in axis direction rear end side position, thereby and by make in axis direction front position cutter from window portion expose make cutter from window portion towards radial outside the outstanding extrusion position that is set as; And low friction part, be arranged on the region that the lower hole with the workpiece that at least will process on the outer peripheral face of guiding sleeve contacts, to lower and the friction of workpiece.
According to the present invention, the guiding sleeve sliding due to the outer Zhou Dynasty of the axis direction along main shaft can make cutter haunt, mechanism that therefore need not be complicated, and be conducive to reduce costs.And, because the outer peripheral face of the guiding sleeve belonging to cylindrical body is provided with low friction part, therefore insert back boring cutting tool in the lower hole of workpiece and while carrying on the back Boring, can suitably lower the rotational resistance between the inner peripheral surface in lower hole and the outer peripheral face of guiding sleeve.
In addition, low friction part is arranged on the region that the lower hole with the workpiece that at least will process on the outer peripheral face of guiding sleeve contacts.As an example, low friction part spreads all over the all-round of guiding sleeve outer peripheral face and arranges, and is preferably and is arranged on the more axis direction region of rear end side than window portion.
With regard to an embodiment, low friction part is formed on the surface-treated layer on the outer peripheral face of guiding sleeve.Surface-treated layer is ion Plasma Nitriding Treatment, DLC (Diamond Like Carbon for example; Class is bored carbon) coating processing, TiN (titanium nitride) coating processing and mirror-like milled processed etc.
With regard to other embodiment, low friction part is the pipe component being arranged on the outer peripheral face of guiding sleeve.Pipe component also can be and is chimericly fixed on the periphery of guiding sleeve and together rotates with guiding sleeve, or also can be relative rotation and be entrenched in freely the periphery of guiding sleeve.
In the time that cutter is haunted, guiding sleeve, or also can automatically be rotated and towards axis direction relative sliding by the action of lathe manually with respect to main shaft rotation and towards axis direction relative sliding by operator.With regard to embodiment more preferably, guiding sleeve is included in while advancing and the flange part of the surperficial butt of workpiece, and is provided with in order to relax and the fender of the shock of workpiece at flange part.According to this embodiment, when back boring cutting tool is inserted from surface to hole workpiece, and when flange part is urged to workpiece surperficial, can't damage the surface of workpiece.And, back boring cutting tool is rotated and advances and even retreat by lathe, can automatically make cutter haunt whereby.
But, after back of the body Boring finishes, cutter is housed in collecting position, cutting powder when engaging-in etc., also may not submerge to collecting position.So, when extracting out when back boring cutting tool, have that cutter clashes into bore hole and the doubtful anxiety that makes back boring cutting tool breakage.Therefore,, with regard to embodiment more preferably, main shaft has: main portion; Cutter support sector, supports cutter; And linking part, connect main portion and cutter support sector; Linking part also can be configured to: excessive remove both connection while being pulled away from power applying between main portion and cutter support sector.According to this embodiment, in the time automatically cutter being haunted, just in case cutter does not fully submerge to collecting position, even when more or less side-prominent towards external diameter from window portion, also in the time extracting back boring cutting tool out from lower hole, cutter can clash into the back side and want to be pulled away from the main portion of main shaft and the excessive power that is pulled away from of cutter support sector can be applied to linking part.Whereby, the main portion of main shaft can separate with cutter support sector, and cutter can depart from from main shaft.Therefore, can prevent the serious damage of back boring cutting tool or workpiece.
Though guiding sleeve also can be integrally formed, more preferably leading section separates formation with rear end side., guiding sleeve has when applying the excessive cap that can depart from while being pulled away from power at its leading section.According to this embodiment, in the time that the cutter support sector of main shaft separates, cap is also separable as mentioned above, and cutter will can not hinder it to depart from from main shaft.
With regard to embodiment more preferably, possess again: clamping ring (clamp ring) is the cylindrical body that mode sliding towards axis direction be arranged on the periphery of main shaft, and linking with the counterrotating mode of described guiding sleeve; A side of the inner peripheral surface of clamping ring or the outer peripheral face of main shaft, formation is connected with the bar ditch of the roughly L word shape of the ditch portion of extending towards axis direction and the ditch portion of extending towards Zhou Fangxiang, the opposing party of the inner peripheral surface of clamping ring or the outer peripheral face of main shaft, be formed with the projection engaging with bar ditch.According to this embodiment, due to projection is engaged with the ditch portion of extending towards Zhou Fangxiang, the axis direction that therefore can limit guiding sleeve slides.Therefore, cutter can be remained on to collecting position or extrusion position.
With regard to embodiment more preferably, main shaft has the guiding mechanism of the rotational angle of the cutter of adjusting extrusion position.According to this embodiment, can cutter be remained on to suitable angle according to the shape of cutter.
(effect of invention)
So, the guiding sleeve sliding along the outer Zhou Dynasty of the axis direction of main shaft due to the present invention haunts cutter, structure that therefore need not be complicated and be conducive to reduce costs.And, because the present invention possesses low friction part, this low friction part is arranged on the region that the lower hole with the workpiece that at least will process on the outer peripheral face of the guiding sleeve that belongs to cylindrical body contacts and lowers and the friction of workpiece, therefore in the time back boring cutting tool being inserted to the lower hole of workpiece and carried on the back Boring, can suitably reduce the rotational resistance between lower hole and guiding sleeve.
Accompanying drawing explanation
Fig. 1 show one embodiment of the invention back of the body bore hole axle want portion's side view.
Fig. 2 shows the back of the body bore hole axle of this embodiment is inserted and wanted portion's side view to the state in lower hole.
Fig. 3 shows that the cutter of the back of the body bore hole axle of this embodiment rotates and stands up and want portion's side view towards the situation of extrusion position from collecting position.
Fig. 4 show the cutter of the back of the body bore hole axle of this embodiment be positioned at extrusion position state want portion's side view.
Fig. 5 show make the back of the body bore hole axle rotation of this embodiment and carry on the back Boring situation want portion's side view.
Fig. 6 shows the enlarged drawing corresponding to the bar ditch of Fig. 1 and the position relationship of projection.
Fig. 7 shows the enlarged drawing corresponding to the bar ditch of Fig. 2 and the position relationship of projection.
Fig. 8 shows the enlarged drawing corresponding to the bar ditch of Fig. 2 and the position relationship of projection.
Fig. 9 shows the enlarged drawing corresponding to the bar ditch of Fig. 3 and the position relationship of projection.
Figure 10 shows the enlarged drawing corresponding to the bar ditch of Fig. 4 and Fig. 5 and the position relationship of projection.
Figure 11 shows the side view of the cutting fluid path of the back of the body bore hole axle of this embodiment.
Figure 12 show another embodiment of the present invention back of the body bore hole axle want portion's side view.
Symbol description
11 back of the body bore hole axles
12 main shaft 12c cutter support sectors
13 cutter 14 handle of a knife portions
15 clamping rings
16 guiding sleeve 16c lids
17 flange part 18 window portions
19 recess 21 pivots
22 springs 23 are adjusted screw
24 bolt 24t bolt front ends
28 slotted hole 29 keys
31 slotted hole 32 cutting fluid paths
33 fender 34 ridges
38 fixed component 39 through holes
41 back of the body bore hole axle 42 pipe components
43 buckle rings
101 fixing tools
201 workpiece 202 times holes
203 surperficial 204 back sides
205 bore holes.
The specific embodiment
Below, describe embodiments of the invention in detail according to embodiment shown in the drawings.
Fig. 1 is the side view that biopsy cavity marker devices shows the major part of the back of the body bore hole axle of one embodiment of the invention, and demonstration is submerged to the state of tool body cutter.
The back of the body bore hole axle 11 that becomes back boring cutting tool is as tool body by the rectangular columniform main shaft 12 extending using the rotation (hereinafter referred to as axis) shown in some chain lines in Fig. 1.Main shaft 12 can be towards the cutter 13 radially haunting for having in axis direction leading section, and is formed with handle of a knife (shank) portion 14 in axis direction rearward end.Handle of a knife portion 14 is cylindric, and inserts and be mounted in Fig. 1 the front end with the fixing tool 101 of the lathe shown in dummy line.In addition, handle of a knife portion 14 can extremely various fixing tools 101 of engaging (chucking).
On the outer peripheral face of main shaft 12 than the more position of front of handle of a knife portion 14, be formed with flange part 17.The outside dimension of flange part 17 is larger than the outside dimension of handle of a knife portion 14.And than flange part 17, more the outside dimension of the axis direction middle section of the main shaft 12 of the position of front is larger than being positioned at.Flange part 17 is in the time that back of the body bore hole axle 11 is arranged on fixing tool and fixing tool 101 butts.
Axis direction central authorities than main shaft 12 are also provided with the clamping ring (clamp ring) 15 as cutter control member near the axis direction position of rear end.Clamping ring 15 is cylindric, is mounted to the periphery of main shaft 12 in rotating mode.Moreover clamping ring 15 can slide along the outer Zhou Dynasty of the axis direction of main shaft 12.The front of clamping ring 15 see through bolt 24 and using can with guiding sleeve 16 as cutter guide member in relative rotation mode link.In addition, the rear end of clamping ring 15 relative with flange (flange) portion 17 to.Between flange part 17 and clamping ring 15, compression arranges spring 27, and spring 27 is that clamping ring 15 is pushed towards axis direction front.
The head of bolt 24 twists into towards radially inner side from the outer peripheral face of clamping ring 15 as outside diameter, and the head side of bolt 24 is fixed to clamping ring 15.Be inserted through from the inner peripheral surface of clamping ring 15 towards the front end 24t of the side-prominent bolt 24 of internal diameter to the slotted hole 31 extending towards Zhou Fangxiang of guiding sleeve 16 that is formed on hollow tube-shape body, and fasten with the bar ditch 25 of the outer peripheral face that is located at main shaft 12 quarter.
By this slotted hole 31, clamping ring 15 is made as and can rotates with respect to guiding sleeve 16, and can be with guiding sleeve 16 together along the outer Zhou Dynasty of the axis direction relative sliding of main shaft 12.In addition,, because the front end of the bolt 24 that is installed in clamping ring 15 can engage with the bar ditch 25 of the periphery that is formed on main shaft 12, therefore clamping ring 15 can move towards Zhou Fangxiang or axis direction in the mode of the bearing of trend along bar ditch 25.Specifically, be same as aftermentioned with the order one of back of the body Boring.
The cylindrical body that guiding sleeve 16 is both ends open, and cross over leading section and arrange from the axis direction middle section of main shaft 12.Form fenestrate portion 18 in the leading section side of guiding sleeve 16.Be formed with the slotted hole 28 extending towards axis direction at guiding sleeve 16.And, be mounted with key 29 at the outer peripheral face of main shaft 12.Key 29 engages with slotted hole 28 and guiding sleeve 16 is guided towards axis direction.Whereby, guiding sleeve 16 slides the periphery of main shaft 12 between axis direction front position and axis direction rear end side position, and can not counterrotating mode to be supported in the periphery of main shaft 12.
In the leading section side of main shaft 12, form towards the recess 19 of axis right angle orientation depression.Clipping recess 19 relatively to a pair of front inner wall 12b set up pivot 21, cutter 13 is supported on pivot 21 in rotating mode.So, cutter 13 can be as shown in Figure 1 at the collecting position of putting upside down along main shaft 12 and rotate at the extrusion position erecting with respect to main shaft 12 as described later.
Be formed with the inclined plane 19s of the linearity that tilts to intersect with axis in the rear end side of recess 19.Between inclined plane 19s and cutter 13, compression is provided with spring 22.Spring 22 is to suppress cutter 13 from recess 19 towards the outstanding mode of radial outside.Rotate and erect though can be pushed by spring 22 by the cutter 13 of pivot 21 rotational support, as shown in Figure 1, the guiding sleeve 16 that is arranged at axis direction rear end side position covers and is housed in recess 19.Particularly, cutter 13 can be blocked and erect than the inner peripheral surface 16m of the guiding sleeve 16 of window portion 18 also close front positions, and remains on the collecting position in recess 19.
In the axis direction rearward end of guiding sleeve 16, be formed with flange part 16f in the outstanding mode of axis direction front outer peripheral face from guiding sleeve.In the axis direction front of flange part 16f and the circular segment of axis direction rear end side, the poor surface of circular segment of the axis direction front in poor is provided with fender 33.Be metal system with respect to the guiding sleeve 16 that comprises flange part 16f, the more soft material of elastic material geometric ratio metal such as soft resin or rubber of fender 33 Polyurethane (urethane) etc. forms.Specifically as described later, the surface of fender 33 is the plane of the ring-type rectangular with axis, in the time of the advancing of back of the body bore hole axle 11 with surface 203 butts of the table side (carrying on the back bore hole axle 11 sides) of workpiece 201.
The surf zone 16s that the lower hole 202 with the workpiece 201 that at least will process of the outer peripheral face of guiding sleeve 16 contacts applies surface treatment.Put on the such as low friction treatment of ion Plasma Nitriding Treatment, DLC (Diamond Like Carbon) coating processing, TiN (titanium nitride) coating processing and mirror-like milled processed etc. of surface treatment of surface-treated layer 16s.This surface treatment spreads all over 360 ° of all-round executions of outer peripheral face.The axis direction size R1 that is preferably surface-treated layer 16s is longer than the length dimension W being pre-formed in the lower hole 202 of workpiece 201.In addition, surface-treated layer 16s is arranged on the axis direction region between fender 33 and window portion 18.
The leading section of guiding sleeve 16 is the lid 16c arranging in addition, and take the axis direction position identical with window portion 18 as seam, chimeric with the rear end side of guiding sleeve 16.The lid 16c of guiding sleeve 16 comprises the more edge 18f of the axis direction front in the inner peripheral surface 16m of front and the edge of window portion 18 than window portion 18, and is fixed on guiding sleeve 16.But lid 16c excessive can separate from the rear end side of guiding sleeve 16 while being pulled away from power applying.
In the ridge 34 of the 12c of cutter support sector, be formed with from a side side of this ridge 34 and connect the through hole 36 to the opposing party side.In addition, at the front end of the main 12d of portion, be formed with respectively: through hole 37, connects to the outer peripheral face of main shaft 12 from a side side of bar ditch 35; And through hole 39, connect to the outer peripheral face of main shaft 12 from the opposing party side of bar ditch 35.The through hole 37 of one side side and the through hole 39 of the opposing party side are common reach through hole.
Be housed in ridge 34 under the state of bar ditch 35, these through holes 37,36,39 are arranged and are formed a common reach through hole.Insert and be fixed with bar-shaped fixed component 38 at the reach through hole 37,36,39 extending towards axis right angle orientation.Fixed component 38 extends to the opposing party's through hole 39 via through hole 36 from side's through hole 37, and have waist 38n at 2 positions midway of length direction.Whereby, the rear end of the 12c of cutter support sector is fixed on to the front end of the main 12d of portion., ridge 34, bar ditch 35 and fixed component 38 form to connect the linking part of the main 12d of portion and the 12c of cutter support sector.In addition, apply excessively while being pulled away from power, fixed component 38 is cut off by waist 38n.Therefore, the 12c of cutter support sector excessive separates from the main 12d of portion while being pulled away from power applying.
In addition, though not shown, also can be configured to: in separable mode, the pivot of cutter 13 21 is arranged on to the main shaft being integrally formed, and cutter 13 is applied and excessive cutter separated while being pulled away from power from main shaft.
For the order of back of the body Boring of back boring cutting tool that uses the present embodiment, first, according to the sequentially main action summary of diagrammatic illustration of Fig. 1 to Fig. 5, then describe action in detail according to Fig. 6 to Figure 10.
First, as shown in Figure 1, make to carry on the back bore hole axle 11 and be moved into the lower hole 202 of workpiece 201 coaxial.Under this state, cutter 13 is housed in the collecting position of the inside of main shaft 12.Guiding sleeve 16 is positioned at the axis direction rear end side position of main shaft 12, and guiding sleeve 16 remains on collecting position under the state engaging with main shaft 12.
In addition, guiding sleeve 16 sees through bolt 24 and links with clamping ring 15, and the front end that is installed in the bolt 24 of clamping ring 15 engages with the bar ditch 25 of the outer peripheral face that is formed on main shaft 12.In detail as described later, in Fig. 1, according to the shape of this ditch 25, main shaft 12 can only carry out the slip that guiding sleeve 16 is advanced towards axis direction, and limits the slip retreating towards axis direction.
Then, as shown in Figure 2, the leading section of main shaft 12 is inserted into hole 202 from the surface 203 of workpiece 201, and before making to carry on the back bore hole axle 11 and then make the leading section of main shaft 12 outstanding from the back side 204, and before making to carry on the back bore hole axle 11 and then make flange part 16f be connected to the surface 203 of workpiece 201.Now, fender 33 relaxes the shock of flange part 16f and workpiece 201.So, while making flange part 16f pushing butt to surperficial 203 (being particularly the face side opening edge in lower hole 202), guiding sleeve 16 bears the pushing force from surface 203, and pushing away contracting spring 27,16 of clamping ring 15 and guiding sleeves retreat towards axis direction rear end side slightly relatively with respect to main shaft 12.Compared to Figure 1,, in Fig. 2, learn that clamping ring 15 and guiding sleeve 16 can slightly retreat.As a result, main shaft 12 advances towards axis direction relatively with respect to guiding sleeve 16.
In addition, guiding sleeve 16 see through bolt 24 with can counterrotating mode and clamping ring 15 link, the front end that is installed in the bolt 24 of clamping ring 15 engages with the bar ditch 25 of the outer peripheral face that is formed on main shaft 12.In detail as described later, in Fig. 2, according to the shape of this ditch 25, clamping ring 15 can, for the relative rotation of main shaft 12, except Zhou Fangxiang mono-location and Zhou Fangxiang the opposing party position, limit the slip of axis direction.In addition,, by the slotted hole 31 extending towards Zhou Fangxiang, clamping ring 15 rotates relatively relative to guiding sleeve 16.
In Fig. 2, guiding sleeve 16 is still positioned at the axis direction rear end side of main shaft 12, and cutter 13 is maintained at collecting position.The fender of flange part 16f 33 is being urged under the situation of workpiece 201, in the time that main shaft 12 is rotated from Zhou Fangxiang mono-location toward Zhou Fangxiang the opposing party position relatively with respect to clamping ring 15, main shaft 12 can slide towards axis direction with respect to guiding sleeve 16 in Zhou Fangxiang the opposing party position.
In addition, the Fig. 1 before this relative rotation and Fig. 2 and relatively postrotational Fig. 3 to Fig. 5 show the position relationship of the axis direction of main shaft 12, guiding sleeve 16, clamping ring 15 and bolt 24.For the convenience illustrating, though these all members are shown as not rotation in Fig. 1 to Fig. 5, must be careful, Fig. 1 to Fig. 5 does not correctly show the spinning movement of these all members or the position relationship of Zhou Fangxiang.
Then, as shown in Figure 3, the cutter 13 of carrying on the back bore hole axle 11 is given prominence to from the side of main shaft 12.; can carry out under the state of the relative sliding between guiding sleeve 16 and main shaft 12; when main shaft 12 is retreated from workpiece 201, guiding sleeve 16 is being urged butt to the state of workpiece 201 by spring 27, and main shaft 12 relatively retreats with respect to guiding sleeve 16.In other words, guiding sleeve 16 can slide towards axis direction with respect to main shaft 12, advances towards axis direction front take main shaft 12 as benchmark from axis direction rear end side position.Whereby, cutter 13 can expose from the window portion 18 of guiding sleeve 16, and cutter 13 rotations erect and give prominence to from window portion 18 towards radial outside.
Then, in the time that guiding sleeve 16 advances towards axis direction front with respect to main shaft 12, as shown in Figure 4, guiding sleeve 16 is positioned at axis direction front position, and cutter 13 is completely outstanding and be arranged on extrusion position towards radial outside from window portion 18.Guiding sleeve 16 sees through bolt 24 and links with clamping ring 15, and the front end that is installed in the bolt 24 of clamping ring 15 engages with the bar ditch 25 of the outer peripheral face that is formed on main shaft 12.In detail as described later, in Fig. 4, according to the shape of this ditch 25, main shaft 12 can only carry out the slip that guiding sleeve 16 is advanced towards axis direction, and limits the slip retreating towards axis direction.
The cutter 13 that is positioned at extrusion position has: blade part 13h, erect towards radial outside, and be positioned at the axis direction rear end side of cutter 13 and cutting workpiece 201 with this extrusion position; And back 13b, be positioned at the axis direction front of cutter 13, and be positioned at the side far away apart from workpiece 201.As shown in Figure 4, blade part 13h extends towards axis right angle orientation, and the mode that relatively radial outside of back 13b becomes towards radial outside the shape that front end is thinner with cutter 13 tilts to extend.But the radially inner side of back 13b extends towards axis right angle orientation.
In addition be provided with, the adjustment screw 23 of the rotational angle of adjusting cutter 13 at the front end of main shaft 12.The adjustment screw 23 that is more positioned at axis direction front than cutter 13 towards cutter 13 spiral shells go out screw front end and with cutter 13 butts of extrusion position.By adjusting this spiral shell output, can be by the angle adjustment of the cutter of extrusion position 13 to the angle of expecting.In the time that spiral shell output is minimum of a value, cutter 13 is maintained at axis right angle orientation.With respect to this, in the time that spiral shell output is increased towards axis direction rear end side, so that cutter 13 tilts along the mode of main shaft 12 a little, and make the rotational angle of the cutter 13 in extrusion position be close to collecting position with the front end meeting of the adjustment screw 23 of the back 13b butt of cutter 13.Therefore, the operator of back of the body bore hole axle 11 can by suitable adjustment become guiding mechanism adjustment screw 23 spiral shell output and the cutter 13 that is positioned at extrusion position is remained on to the rotational angle of expectation.
Then, as shown in Figure 5, while making to carry on the back retreating that 11 rotations of bore hole axle make with cutting feeder on one side, cutter 13 is pushed to the back side 204 of butt to workpiece 201, workpiece 201 is implemented and carried on the back Borings.In the back side, 204 cuttings are formed with the back of the body bore hole perforate 205 that expands aperture by back of the body Boring.
The above summary action that is illustrated as the back of the body Boring order that diagrammatic illustration undertaken by back of the body bore hole axle 11.
Then, describe the action of back of the body bore hole axle 11 in detail.In the present embodiment, as illustrated below, 101 meetings of fixing tool are front and then make fender 33 be urged to workpiece 201, make whereby cutter 13 haunt.
Fig. 6 to Fig. 8 is the enlarged drawing that schematically shows back of the body bore hole axle 11 peripheries.Fig. 6 is corresponding diagram 1, and Fig. 7 and Fig. 8 are corresponding diagram 2, and Fig. 9 is corresponding diagram 3, and Figure 10 is corresponding diagram 4 and Fig. 5.As shown in Fig. 6 to Figure 10, be formed with bar ditch 25 at the outer peripheral face of main shaft 12.This ditch 25 is roughly L word shape, and the axis direction ditch 25x of portion extending towards axis direction front from the Zhou Fangxiang ditch 25r of portion extending towards Zhou Fangxiang, the bar ditch end 25s slightly extending toward axis direction front from one end 25b of the Zhou Fangxiang ditch 25r of portion, from the other end 25c of the Zhou Fangxiang ditch 25r of portion and be positioned at the forward end of the axis direction ditch 25x of portion and formed than the bar ditch front 25t of the more close axis direction front of bar ditch end 25s.
The front end 24t (hereinafter referred to as bolt front end 24t) of bolt 24 is for fastening along bar ditch 25 and be guided with bar ditch 25.Because clamping ring 15 is pushed towards axis direction front by spring 27, the front end 24t of the bolt 24 of therefore being fixed by clamping ring 15 can be pushed into as shown in Figure 6 axis direction front and be embedded in bar ditch end 25s in the time being positioned at bar ditch end 25s, therefore clamping ring 15 is maintained at the periphery of main shaft 12 in the mode that can not rotate.In the time that bolt front end 24t is positioned at bar ditch end 25s, guiding sleeve 16 under the state that can not move towards axis direction front with respect to 12, main shaft in axis direction rear end side position, cutter 13 remains on collecting position.
Before fixing tool 101 makes to carry on the back bore hole axle 11 and then when the fender of guiding sleeve 16 33 is urged to workpiece 201, spring 27 can be compressed, and 25, the bar ditch of the main shaft 12 bolt front end 24t with respect to guiding sleeve 16 sides slightly advances.So, from the inner peripheral surface of guiding sleeve 16 inwardly radially outstanding bolt front end 24t can move towards one end 25b of the Zhou Fangxiang ditch 25R of portion from bar ditch end 25s as shown in Figure 7.
Then, guiding sleeve 16 is being urged under the state of workpiece 201, clamping ring 15 is rotated relatively with respect to main shaft 12.Particularly, under the state of fixing clamping ring 15, main shaft 12 is rotated.Or, also can under the state of fixed main shaft 12, make clamping ring 15 rotate.So, be installed in clamping ring 15 and connect guiding sleeve 16 slotted hole 31 and inwardly radially outstanding bolt front end 24t can as shown in Figure 8, move towards other end 25c from one end 25b of the Zhou Fangxiang ditch 25R of portion.Now, bolt front end 24t moves towards the other end from one end of slotted hole 31, and therefore clamping ring 15 is with respect to guiding sleeve 16 relativity rotations.
Then, fixing tool 101 makes to carry on the back bore hole axle 11 while retreating, and the guiding sleeve 16 being suppressed to front by spring 27 is being pushed under the state of workpiece 201, and main shaft 12 can retreat with respect to guiding sleeve 16.Whereby, bar ditch 25 retreats with respect to the bolt front end 24t of guiding sleeve 16 sides as shown in Figure 9.In other words, bolt front end 24t can move towards front along the axis direction ditch 25x of portion.
And as shown in figure 10, in the time that bolt front end 24t moves to bar ditch leading section 25t, guiding sleeve 16 moves to axis direction front position with respect to main shaft 12, cutter 13 is positioned at extrusion position.
Detailed action when cutter 13 projects to extrusion position from collecting position rotation is more than described.
In the time that the back of the body Boring shown in Fig. 5 finishes, cutter 13 is housed in to main shaft 12 inside and will carries on the back bore hole axle 11 and extract out from lower hole 202.This order is sequentially carried out as shown in Fig. 5 to Fig. 1 with order contrary to the above.
This extraction order is below described.First, fixing tool 101 is advanced, make to carry on the back bore hole axle 16 as shown in Figure 4 towards 203 pushings above.In Fig. 5 and Fig. 4, clamping ring 15 is pushed by spring 27, and therefore guiding sleeve 16 is positioned at axis direction front position.Now, bolt front end 24t remains on one end 25t (below also referred to as bar ditch leading section 25t) of bar ditch 25 as shown in figure 10.
Then, when fixing tool 101 is advanced, spring 27 is compressed, and 12, main shaft moves (Fig. 3) with respect to guiding sleeve 16 towards front.Now, bolt front end 24t moves along the axis direction ditch 25x of portion, and moves to other end 25c from bar ditch leading section 25t.Whereby, guiding sleeve 16 slides towards axis direction rear end side with respect to main shaft 12.
In the time that guiding sleeve 16 slides from axis direction front position towards axis direction rear end, the edge 18f butt of the axis direction front in the edge of window portion 18, to the back 13b of cutter 13, makes cutter 13 rotate until put upside down to collecting position from extrusion position.(Fig. 4 → Fig. 3 → Fig. 2).
Then, fixing tool 101 makes main shaft 12 relatively rotate with respect to clamping ring 15 guiding sleeve 16 is urged to above under 203 state as shown in Figure 2.Now, bolt front end 24t moves along the Zhou Fangxiang ditch 25R of portion, and moves to one end 25b from other end 25c.
And in the time that fixing tool 101 is slightly retreated, guiding sleeve 16 can not slide towards axis direction front with respect to main shaft 12, and cutter 13 is remained on to collecting position.Now, bolt front end 24t is suppressed by spring 27, and embeds as shown in Figure 6 bar ditch end 25s, and is kept in not revolvable mode.
Then,, by fixing tool 101 is retreated towards axis direction rear end side, if Fig. 1 is as shown, back of the body bore hole axle 11 is drawn out of from lower hole 202.Thus, complete draw out operation.Figure 11 is the side view that shows the cutting fluid path of back of the body bore hole axle 11.Main shaft 12 has the cutting fluid path 32 extending towards axis direction front from the rear end of handle of a knife portion 14.Cutting fluid path 32 is arranged at the inside of main shaft 12, and its leading section 32f changes 90 degree in the internal direction of front inner wall 12b (Fig. 1), and extends towards the direction vertical with axis.This cutting fluid path leading section 32f exposes and points to the cutter 13 that is arranged in extrusion position from window portion 18.Cutting fluid path 32 is supplied with cutting fluid from fixing tool 101 in back of the body Boring, and towards the direction of arrow, cutter 13 is sprayed to cutting fluid.So, cooling cutter 13 in back of the body Boring.
Learnt by above explanation, according to the back of the body bore hole axle 11 of the present embodiment, owing to thering is the bar ditch 25 of L word shape roughly, bolt front end 24t, spring 27 and the fender 33 of overshooting shape, therefore at fixing tool 101, guiding sleeve 16 is urged under the state of workpiece 201, can makes main shaft 12 rotate and even slide along the shape of bar ditch 25.And, can make window portion 18 move to correct position and cutter 13 is exposed towards axis direction.Moreover bolt front end 24t can remain on the bar ditch leading section 25t corresponding with cutter extrusion position, and can make that cutter 13 is stable remains on the extrusion position shown in Fig. 4 and Fig. 5.In addition, bolt front end 24t remains on the bar ditch end 25s corresponding with cutter collecting position, and cutter 13 stably can be remained on to the collecting position shown in Fig. 1.Therefore, according to the present embodiment, can utilize easy formation automatically to make cutter 13 haunt, and the operating efficiency of back of the body Boring can promote.
In addition, in the present embodiment, though can automatically make cutter 13 haunt, do not get rid of operator and make clamping ring 15 rotate with respect to main shaft 12 and manually make cutter 13 haunt.
Moreover, according to the back of the body bore hole axle 11 of the present embodiment, because fender 33 is formed by more soft materials of elastic material geometric ratio metal such as soft resin or rubber such as Polyurethane, therefore can not damage workpiece 201.
In addition, according to the back of the body bore hole axle 11 of the present embodiment, due to guiding sleeve outer peripheral face 16s is applied to low friction treatment, therefore in the time carrying on the back Boring, can be suppressed at the doubtful anxiety that produces rotational resistance between the periphery of back of the body bore hole axle 11 and the inner peripheral surface in lower hole 202.
But, fixing tool 101 makes to carry on the back bore hole axle 11 and retreats not reach the cutting feed speed of predetermined speed in back of the body Boring, automatically make cutter 13 submerge at back of the body Boring after finishing, and above rate of delivery ahead of time makes to carry on the back bore hole axle 11 and retreats at a predetermined velocity, and extract out from lower hole 202.In this present embodiment, have cutter 13 because cutting the collecting positions that can not submerge completely such as the obstruction of powder, and more or less from window portion towards the side-prominent situation of external diameter.Under this urgent situation, fixed component 38 can fracture, and the damage of back of the body bore hole axle 11 and workpiece 201 can be suppressed to Min..
Particularly, when make to carry on the back bore hole axle 11 while retreating with quick rate of delivery under cutter 13 state side-prominent towards external diameter from window portion 18, cutter 13 meetings are clashed into the bottom surface of back of the body bore hole perforate 205, and can be applied to the connecting portion of the 12c of cutter support sector and the main 12d of portion than the power that is pulled away from of conventionally large axis direction.So fixed component 38 can fracture at waist 38n because of shearing force, the 12c of cutter support sector can separate from the main 12d of portion.In addition, when the 12c of cutter support sector separates, and the back 13b of cutter 13 and edge 18f be while clashing into, and lid 16c can be because the power that is pulled away from of the axis direction than conventionally large be from the rear end side separation of guiding sleeve 16.
According to the present embodiment, cutter 13 is arranged to: insert from surface 203 sides of workpiece 201 to hole 202 and when the quick rate of delivery more than is at a predetermined velocity drawn out of in the back side of the workpiece 201 204 sides state outstanding from window portion 18, can separate from the main 16d of portion of the axis direction of main shaft 12.And, guiding sleeve 16 is configured to: insert from surface 203 sides of workpiece 201 at cutter 13 to the hole 202 and when rate of delivery more than is at a predetermined velocity drawn out of in the back side of the workpiece 201 204 sides state outstanding from window portion 18, apply the excessive power that is pulled away from and also make the lid 16c of leading section separate.Therefore, immerse recess 19 grades while causing cutter 13 not fully to be housed in the emergency situations of collecting position owing to cutting powder, cutter 13 can separate from back of the body bore hole axle 11, and the damage of back of the body bore hole axle 11 and workpiece 201 can be suppressed to Min..
In addition, in the time that the cutting feed speed not reach predetermined speed makes to carry on the back the general situation that bore hole axle 11 retreats, due to act on connecting portion axis direction to be pulled away from power little, therefore fixed component 38 can not fracture, and suitably carries on the back Boring.Moreover, main shaft 12 is retreated with respect to guiding sleeve 16, and the elastic force pressure of antagonistic spring 22 and while accommodating the general situation of cutter 13, because the power that is pulled away from of axis direction is little, therefore cover 16c and can not separate from guiding sleeve 16.
Then, another embodiment of the present invention is described.What Figure 12 biopsy cavity marker devices showed another embodiment of the present invention wants portion's side view.According to embodiment, for giving prosign with the common formation of above-described embodiment and description thereof is omitted, different formations is below described.In the back of the body bore hole axle 41 of the embodiment shown in Figure 12, the pipe component 42 that the outer peripheral face of itself is carried out to low friction treatment is set, to replace surface-treated layer 16s.
According to the back of the body bore hole axle 41 of the embodiment shown in Figure 12, because pipe component 42 is arranged on the region that the lower hole 202 with the workpiece 201 that at least will process on the outer peripheral face of guiding sleeve 16 contacts, therefore in the time carrying on the back Boring, can be suppressed at the doubtful anxiety that produces rotational resistance between the periphery of back of the body bore hole axle 41 and the inner peripheral surface in lower hole 202.In addition, pipe component 42 also can together rotate with guiding sleeve 16.
With regard to variation, pipe component 42 also can than the position of the more close axis direction rear end side of window portion 18 can free counterrotating mode to be supported on the periphery of guiding sleeve 16.
Though above with reference to the accompanying drawings of embodiments of the invention, the present invention is not limited to the embodiment of accompanying drawing.For the embodiment of accompanying drawing, with the same scope of the present invention in or in impartial scope, can carry out various corrections or change.
(industrial applicability)
Back boring cutting tool of the present invention effectively utilizes at lathe.
Claims (7)
1. a back boring cutting tool, is characterized in that, possesses:
Main shaft, along Axis Extension, and has axis direction rearward end and can be mounted to the inserted-shape of the fixing tool of lathe;
Cutter, is supported on the axis direction leading section of described main shaft in rotating mode, and is set as the collecting position of putting upside down along main shaft and the extrusion position erecting with respect to main shaft;
Suppress member, described cutter is rotated and erect and suppress to described extrusion position;
Guiding sleeve, for can be in the axis direction outer Zhou Dynasty of the main shaft cylindrical body arranging of sliding, and there is window portion in the side of cylindrical body, by covering described cutter and cutter is remained on to described collecting position in axis direction rear end side position, thereby and by make described cutter expose and make that cutter is outstanding from window portion towards radial outside is set as described extrusion position from described window portion in axis direction front position; And
Low friction part, is arranged on the region that the lower hole with the workpiece that at least will process on the outer peripheral face of described guiding sleeve contacts, to lower and the friction of workpiece;
Described main shaft has:
Main portion;
Cutter support sector, supports described cutter; And
Linking part, connects described main portion and described cutter support sector;
Described linking part is configured to: excessive remove both connection while being pulled away from power applying between described main portion and described cutter support sector.
2. back boring cutting tool according to claim 1, is characterized in that, described low friction part is the surface-treated layer being formed on the outer peripheral face of described guiding sleeve.
3. back boring cutting tool according to claim 1, is characterized in that, described low friction part is arranged on the pipe component on the outer peripheral face of described guiding sleeve.
4. back boring cutting tool according to claim 1, is characterized in that, described guiding sleeve is included in while advancing and the flange part of the surperficial butt of workpiece, and is provided with in order to relax and the fender of the shock of workpiece at described flange part.
5. back boring cutting tool according to claim 1, is characterized in that, described guiding sleeve has when applying the excessive cap that can depart from while being pulled away from power at its leading section.
6. back boring cutting tool according to claim 1, is characterized in that, possesses:
Clamping ring, for be arranged on the cylindrical body of the periphery of main shaft in the mode that can slide towards axis direction, and linking with the counterrotating mode of described guiding sleeve;
A side of the inner peripheral surface of described clamping ring or the outer peripheral face of described main shaft, form the bar ditch of the roughly L word shape that is connected with the ditch portion of extending towards axis direction and the ditch portion of extending towards Zhou Fangxiang;
The opposing party of the inner peripheral surface of described clamping ring or the outer peripheral face of described main shaft, be formed with the projection engaging with described ditch.
7. back boring cutting tool according to claim 1, is characterized in that, described main shaft has the guiding mechanism of the rotational angle of the described cutter of adjusting described extrusion position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010197804A JP5378330B2 (en) | 2010-09-03 | 2010-09-03 | Back facing cutting tool |
| JP2010-197804 | 2010-09-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102380630A CN102380630A (en) | 2012-03-21 |
| CN102380630B true CN102380630B (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110054824.3A Active CN102380630B (en) | 2010-09-03 | 2011-03-07 | Back boring cutting tool |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5378330B2 (en) |
| CN (1) | CN102380630B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6241612B2 (en) * | 2014-02-26 | 2017-12-06 | トヨタ自動車株式会社 | Cylinder block machining method and apparatus |
| CN107186249A (en) * | 2016-03-14 | 2017-09-22 | 深圳光启高等理工研究院 | Processing method and component for carrying out counter boring to workpiece |
| AU2018299423A1 (en) | 2017-07-12 | 2020-01-16 | Gary Richard ADAMS | Boring tool |
| CN108044155A (en) * | 2017-12-28 | 2018-05-18 | 河南艾通科技股份有限公司 | A kind of monoblock type boring machine guide sleeve |
| US10675728B2 (en) * | 2018-10-29 | 2020-06-09 | Shin-Yain Industrial Co., Ltd. | Cutter holder capable of polishing |
| JP7207983B2 (en) * | 2018-12-10 | 2023-01-18 | 株式会社Subaru | Drills, drilling units and methods of making workpieces |
| CN114289764B (en) * | 2022-01-19 | 2023-05-26 | 航天精工股份有限公司 | Combined cutter for processing blind end stepped hole |
| CN114226818B (en) * | 2022-01-19 | 2023-04-25 | 航天精工股份有限公司 | Reverse hole milling tool for processing blind end stepped hole |
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| CN1212916A (en) * | 1997-09-10 | 1999-04-07 | 乌尔夫·胡勒 | Spot-facing and burring tool controlled by centrifugal force |
| US5927911A (en) * | 1998-10-19 | 1999-07-27 | R. Steiner Technologies, Inc. | Automatic fluid actuated spotfacing and counterboring tool |
| JP2002301614A (en) * | 2001-04-05 | 2002-10-15 | Mitsubishi Materials Corp | Tool/device for drilling |
| JP5200731B2 (en) * | 2008-07-29 | 2013-06-05 | 日産自動車株式会社 | Exhaust gas purification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48109574U (en) * | 1972-03-21 | 1973-12-17 | ||
| JPS5444493U (en) * | 1977-07-21 | 1979-03-27 | ||
| JPS5851904A (en) * | 1981-09-21 | 1983-03-26 | Kurita Water Ind Ltd | Method for washing membrane surface of membrane separation apparatus |
| JPS5851904U (en) * | 1981-09-30 | 1983-04-08 | 日立造船株式会社 | Arbor for back counterbore |
| JPS6029005U (en) * | 1983-07-28 | 1985-02-27 | 日野自動車株式会社 | Chamfering tool |
| DE4132228A1 (en) * | 1991-09-27 | 1993-04-01 | Fischer Artur Werke Gmbh | DRILLING DEVICE FOR PRODUCING DRILL HOLES WITH UNDERCUT |
| JP4089796B2 (en) * | 1997-09-24 | 2008-05-28 | アスカトレーディング株式会社 | Back face / chamfering equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212916A (en) * | 1997-09-10 | 1999-04-07 | 乌尔夫·胡勒 | Spot-facing and burring tool controlled by centrifugal force |
| US5927911A (en) * | 1998-10-19 | 1999-07-27 | R. Steiner Technologies, Inc. | Automatic fluid actuated spotfacing and counterboring tool |
| JP2002301614A (en) * | 2001-04-05 | 2002-10-15 | Mitsubishi Materials Corp | Tool/device for drilling |
| JP5200731B2 (en) * | 2008-07-29 | 2013-06-05 | 日産自動車株式会社 | Exhaust gas purification system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102380630A (en) | 2012-03-21 |
| JP2012051090A (en) | 2012-03-15 |
| JP5378330B2 (en) | 2013-12-25 |
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