CN102398052B - Back Boring Cutting Tool - Google Patents
Back Boring Cutting Tool Download PDFInfo
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- CN102398052B CN102398052B CN201110058190.9A CN201110058190A CN102398052B CN 102398052 B CN102398052 B CN 102398052B CN 201110058190 A CN201110058190 A CN 201110058190A CN 102398052 B CN102398052 B CN 102398052B
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- main shaft
- guiding sleeve
- cutting tool
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Abstract
Provided is a back boring cutting tool (11), comprising a main shaft (12) which, extending along the axial direction, is provided with a holding tool at the rear end along the axial direction, a cutter which is supported to the front end along the axial direction of the main shaft in a rotary manner and designed as a reversely-placed accepting position along the main shaft and a protruding position relatively vertical to the main shaft, and a guide sleeve (16) which, shaped as a cylinder, is arranged at the periphery of the main shaft in a relative rotary manner; and a window part (28) arranged at the side surface of the cylinder body, wherein the cutter (13) is covered at a first rotary position along the circumferential direction, thereby keeping the cutter (13) at the accepting position; and the cutter (13) is exposed outside the window part (28) at a second rotary position along the circumferential direction, thereby making the cutter axially protrude outward from the window part and arranged at the protruding position.
Description
Technical field
The present invention relates to a kind of cutting element that is mounted to the fixing tool (holder) of lathe (machine tool), especially relate to behind a kind of lower hole that is inserted into workpiece (work), cutter is haunted and the rear side in lower hole is bestowed to the back boring cutting tool of back of the body 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, the front end of back of the body bore hole axle is outstanding from the back side of workpiece, 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, from lower hole, extract back of the body bore hole axle out.
Automatically to implement the existing various technology of the technology of haunting of cutter in this back of the body Boring.For example, it is drive source that Japanese kokai publication hei 11-156612 communique (patent documentation 1) be take the pressure of cooling fluid, 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)
Yet, as as described in prior art, because the back of the body bore hole axle of using 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 and link piston and cutter, make bar (rod) that cutter moves etc., thus complex structure and cost high.
Because above-mentioned problem, the object of the present invention is to provide a kind ofly can make cutter towards the back boring cutting tool radially haunting 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), and along Axis Extension, and axis direction rearward end has the inserted-shape of the fixing tool that can be mounted to lathe; Pivot, is arranged on the axis direction leading section of main shaft, extends abreast with axis; Cutter, is propped up at pivot by axle 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, by being surrounded on the elastic force pressure of the pivot extending abreast with axis, cutter being rotated and erect to extrusion position; And guiding sleeve (guide sleeve), for can counterrotating mode to be arranged on the cylindrical body of the periphery of main shaft, and there is window portion in the side of cylindrical body, by the 1st position of rotation Zhou Fangxiang mono-side, cover cutter and cutter is remained on to collecting position, and make cutter expose and make cutter give prominence to and be set as extrusion position from window portion towards radial outside from window portion by the 2nd position of rotation Zhou Fangxiang the opposing party, by being rotated towards Zhou Fangxiang mono-side from Zhou Fangxiang the opposing party, Zhou Fangxiang the opposing party's of window portion window portion frame pushes over cutter to collecting position.
According to the present invention, owing to can making cutter haunt can counterrotating mode to be arranged on the guiding sleeve of the periphery of main shaft, mechanism that therefore need not be complicated, and be conducive to reduce costs.
In the back of the body Boring of prior art, conventionally select and make the outside dimension of back boring cutting tool more smaller than the internal diameter size in the lower hole of workpiece, to avoid producing the situation of rotational resistance between the inner peripheral surface in lower hole and the outer diametric plane of back boring cutting tool, and can make to carry on the back bore hole axle and easily insert or extract out in lower hole.Yet in the past had the rotational resistance while producing Boring between the inner peripheral surface in lower hole and the outer peripheral face of back of the body bore hole axle, or the situation welding.
For solving above-mentioned problem, with regard to embodiment more preferably, also possess low friction part, be arranged on the region at least contacting with the lower hole of the workpiece that will process on the outer peripheral face of guiding sleeve, to lower the friction with workpiece.According to this embodiment, because the outer peripheral face belonging to the guiding sleeve of cylindrical body is provided with low friction part, therefore when back boring cutting tool being inserted to the lower hole of workpiece and carrying on the back Boring, can suitably reduce 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 at least contacting with the lower hole of the workpiece that will process of the outer peripheral face of guiding sleeve.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 axis direction region of rear end side more 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 brill 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 the periphery that relative rotation is entrenched in guiding sleeve freely.
When cutter is haunted, guiding sleeve is manually rotated with respect to main shaft by operator, or also can be by the automatically rotation relatively of action of lathe.With regard to embodiment more preferably, guiding sleeve be included in while advancing and the section of the surperficial butt of workpiece poor, and be provided with in order to relax and the fender of the shock of workpiece in section difference.According to this embodiment, when back boring cutting tool is inserted from surface pass to workpiece hole, and the poor pushing butt of section during to workpiece surperficial, can't be damaged to the surface of workpiece.And, by lathe, main shaft or guiding sleeve are rotated relatively, can automatically make cutter haunt whereby.
Yet after Boring finishes, cutter is housed in collecting position at the back of the body, yet cutting powder when engaging-in etc., also may not necessarily submerge to collecting position.So, when extracting back boring cutting tool out, have cutter and clash into the doubtful anxiety of carrying on the back bore hole perforate and making back boring cutting tool breakage.Therefore,, with regard to embodiment more preferably, main shaft has: main portion; Cutter support portion, supports cutter; And linking part, connect main portion and cutter support portion; Linking part also can be configured to: to applying between main portion and cutter support portion, excessive remove both connection while being pulled away from power.According to this embodiment, when automatically cutter being haunted, even just in case cutter does not fully submerge to collecting position, and when more or less side-prominent towards external diameter from window portion, when extracting back boring cutting tool out from lower hole, cutter can clash into the back side of workpiece 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 portion can be applied to linking part.Whereby, the main portion of main shaft can be separated with cutter support portion, and cutter can depart from from main shaft.Therefore, can prevent the serious damage of back boring cutting tool or workpiece.
Though the link of main shaft and guiding sleeve structure is not particularly limited, but with regard to embodiment more preferably, the inner peripheral surface of guiding sleeve or the outer peripheral face of main shaft one side, be formed with the bar ditch extending towards Zhou Fangxiang, and the opposing party at the inner peripheral surface of guiding sleeve or the outer peripheral face of main shaft, be formed with the projection engaging with bar ditch, projection is optionally maintained at an end and the other end of bar ditch.According to this embodiment, projection can engage with the bar ditch extending towards Zhou Fangxiang, and is optionally maintained at one end and the other end of bar ditch, and can easily cutter be rotated/remain on collecting position or extrusion position.In addition, an end of bar ditch is corresponding to the 1st position of rotation of guiding sleeve, and the other end of bar ditch is corresponding to the 2nd position of rotation of guiding sleeve.
The mode that cutting fluid is supplied to back of the body bore hole perforate in back of the body Boring is not particularly limited, and with regard to embodiment more preferably, main shaft has the cutting fluid path extending from axis direction rearward end towards front, and cutting fluid is ejected to the cutter on extrusion position.According to this embodiment, can efficiently cutting fluid be supplied to the perforate of back of the body bore hole, and can suitably implement back of the body Boring.
The structure of cutter is also not particularly limited, and with regard to embodiment more preferably, cutter has cutter portion in axis direction rear end side and axis direction front respectively.According to this embodiment, can show Boring and two kinds of Borings of back of the body Boring.
The structure of cutter is not particularly limited, and with regard to embodiment more preferably, cutter has cutter body and is arranged on cutter body and the insertion dististyle of cutting workpiece.
(effect of invention)
So, the present invention, by can the cutter that be arranged on main shaft being haunted towards the counterrotating guiding sleeve of Zhou Fangxiang, therefore can solve the problem of complicated cylinder mechanism, and be conducive to the reduction of cost.According to the present invention, can make automatically or manually guiding sleeve relatively rotate.
Accompanying drawing explanation
Fig. 1 is for showing the plane of the back of the body bore hole axle of one embodiment of the invention.
Fig. 2 be the biopsy cavity marker devices back of the body bore hole axle that shows this embodiment want portion's side view.
Fig. 3 is the profile of the III-III of Fig. 2.
Fig. 4 is the profile of the IV-IV of Fig. 2.
Fig. 5 is positioned at the front elevation of the back of the body bore hole axle of extrusion position for showing cutter.
Fig. 6 is that biopsy cavity marker devices shows that cutter is positioned at the side view of the back of the body bore hole axle of extrusion position.
Fig. 7 is positioned at the front elevation of the back of the body bore hole axle of extrusion position for showing cutter.
Fig. 8 is the profile of the VIII-VIII of Fig. 6.
Fig. 9 is the profile of the IX-IX of Fig. 6.
Figure 10 is for showing the key diagram automatically make the situation that cutter haunts.
Figure 11 is the side view of the cutting fluid path of the back of the body bore hole axle of this embodiment of demonstration.
Figure 12 is for showing the figure of the variation of cutter.
Figure 13 be the biopsy cavity marker devices back of the body bore hole axle that shows another embodiment want portion's side view.
Figure 14 schematically shows and the exploded perspective view of the back of the body bore hole axle of another embodiment.
Symbol description
11 back of the body bore hole axles
The 12 main portions of main shaft
13 cutter 14 handle of a knife portions
16 guiding sleeve 16s surface-treated layers
17 flange parts
19 recess 21 screws
22 axle front end components 23 pivots
24 spring 26 screws
26t screw front end
Article 27, ditch
28 window portion 29 springs
32 flange parts
34 circular segment are poor
35 fender 36 cutting fluid paths
41 back of the body bore hole axle 43 cutters
44,45 insert dististyle (cutter portion)
46 cutter bodies
51 back of the body bore hole axle 52 pipe components
53 buckle ring 61 back of the body bore hole axles
62 63, main shaft ditches
64 pivots
101 fixing tools
201 workpiece 202 times holes.
The specific embodiment
Below, according to embodiment shown in the drawings, describe embodiments of the invention in detail.
The back of the body bore hole axle 11 that becomes back boring cutting tool is the main portion 12 of rectangular columniform main shaft of extending with the rotation (hereinafter referred to as axis) shown in some chain lines in Fig. 1 and Fig. 2, in axis direction leading section, having can be towards the cutter 13 radially haunting, and is formed with handle of a knife (shank) portion 14 in axis direction rearward end.Handle of a knife portion 14 is the shape that has the barrel surface 14a that represents with predetermined radii and excise the smooth inclined plane 14b that the mode of this barrel surface forms with severing, and inserts and be mounted to the front end of the fixing tool of not shown lathe.In addition, handle of a knife portion 14 can engaging (chucking) to various fixing tools.
On the outer peripheral face of the main portion 12 of main shaft than handle of a knife portion 14 position of front more, abutted to form flange part 17.The outside dimension of flange part 17 is larger than the outside dimension of handle of a knife portion 14.And, the outside dimension of the main portion 12 of main shaft according to flange part 17, with the columned axis direction region 12a of the front adjacency of flange part, with the columned axis direction middle section 12b of the front adjacency of region 12a, with the order of the columned axis direction front end area 12c of the front adjacency of axis direction middle section 12b, periodically diminish.
In the front-end of spindle portion that is included in the axis direction front end area 12c of the main portion 12 of main shaft, be formed with towards the recess 19 of the direction depression of internal diameter.And the front end in the main portion 12 of main shaft, sees through the axle front end components 22 that screw 21 is provided with cylindrical shape.The outside dimension of axle front end components 22 of fore-end that belongs to main shaft is identical with the outside dimension of axis direction front end area 12c.Axle front end components 22 and recess 19 adjacency.Between axle front end components 22 and the main portion 12 of main shaft, to have set up pivot 23 by the mode of recess 19.Pivot 23 extends abreast with axis, and props up cutter 13 with rotating mode axle.Whereby, cutter 13 turns to along main shaft fall down and be housed in the collecting position in recess 19 as shown in Figures 2 and 3, and as shown in Fig. 5 to Fig. 8, turns to respect to the main portion 12 of main shaft and erect and from the outstanding extrusion position of recess 19.
The through hole 22h that the leading section of pivot 23 is formed on axle front end components 22 and extends abreast with axis.At through hole 22h, from front, be screwed with fixed screw 23.Whereby, prevent that pivot 23 from coming off from through hole 22h.
The rearward end of pivot 23 is inserted and is passed to from the front end of the main portion 12 of main shaft recessed hole 12h towards the rear.
The through hole 22h of inside and the annular gap of pivot 23 in axle front end components 22, be provided with spring 29.Spring 29 is for engaging with cutter 13 and axle front end components 22 respectively, and cutter 13 rotated erect and suppress the member that suppresses to extrusion position.
Axle front end components 22 is fixed on the front end of the main portion 12 of main shaft by screw 21.Yet, axle front end components 22 apply excessive while being pulled away from power from 12 separation of the main portion of main shaft.; in the present embodiment; back of the body bore hole axle 11 has the main portion 12 of main shaft, is included in axle front end components 22 and the pivot 23 of the cutter support portion of supporting cutter 13 and connects main portion and the screw 21 as linking part of cutter support portion, and screw 21 is configured to: when excessive removing both connection while being pulled away from power applying between main portion and cutter support portion.
Ratio flange part 17 in the main portion 12 of main shaft is the position of front more, is coated with the guiding sleeve 16 as the cylindrical body of both ends open.Guiding sleeve 16 spreads all over axis direction region 12a, the axis direction middle section 12b of the main portion 12 of main shaft and axis direction front end area 12c and arranges, and can counterrotating mode to be supported on the outer peripheral face of the main portion 12 of main shaft.Axis direction rear end at guiding sleeve 16 is formed with flange part 32.
The outside dimension of the outer peripheral face of guiding sleeve 16 is in flange part 32 maximums of axis direction rear end, minimum in axis direction front.Particularly, according to the outside dimension of flange part 32, be positioned at than the outside dimension of the region 16a of the drum of the position of the more close axis direction front of flange part 32, be positioned at than the order of the outside dimension of the region 16b of the drum of the position of the more close axis direction front of region 16a, periodically diminish.In addition, the border at 16aYu region, the region of guiding sleeve periphery 16b, is formed with circular segment and differs from 34.In circular segment, differ from 34 and be provided with the fender 35 relaxing with the shock of workpiece.
With respect to the guiding sleeve 16 that comprises flange part 32, be metal system, fender 35 is formed by more soft materials of elastic material geometric ratio metal such as the soft resin of Polyurethane (urethane) etc. or rubber.Specifically as described later, the surface of fender 35 is the plane of the ring-type rectangular with axis, when the advancing of back of the body bore hole axle 11 with the surperficial butt of the table side (carrying on the back bore hole axle 11 sides) of workpiece.
The surf zone 16s contacting with the lower hole workpiece that at least will process the outer peripheral face of guiding sleeve 16 applies to become the surface treatment of low friction.Put on the low friction treatment of surface treatment such as ion Plasma Nitriding Treatment, DLC (Diamond Like Carbon) coating processing, TiN (titanium nitride) coating processing and mirror-like milled processed etc. as the surface-treated layer 16s of low friction part.This surface treatment spreads all over 360 ° of all-round executions of outer peripheral face.Surface-treated layer 16s can be formed on the whole of region 16b, or also can be formed on a part of region 16b, but is formed at least axis direction region between fender 35 and window portion 28.
The inner peripheral surface of guiding sleeve 16, and the outer peripheral face of the axis direction middle section 12b of the main portion 12 of main shaft between, zoning has annulus, at this annulus, contracting is provided with spring 24.It is poor that the axis direction rear end of spring 24 is connected to the circular segment on border of region 12a and axis direction middle section 12b, on the other hand, it is poor that the axis direction front end of spring 24 is connected to the circular segment in the interior week of being located at guiding sleeve 16, and guiding sleeve 16 is suppressed to the front of the main portion 12 of main shaft.
Than spring 24 guiding sleeve 16 of front more, be equipped with the screw hole 25 (with reference to Fig. 4, Fig. 9) connecting towards radially, at screw hole 25, be screwed with screw 26.The head of screw 26 is installed in guiding sleeve 16, and the front end 26t of screw 26 engages with the bar ditch 27 of axis direction middle section 12b that is formed on the outer peripheral face of the main portion 12 of main shaft.Bar ditch 27 is arranged at axis direction middle section 12b, and extends towards Zhou Fangxiang, and 27aJi the other end, end 27b slightly extends towards axis direction the place ahead respectively.
Screw front end 26t is guided along bar ditch 27, so the anglec of rotation of guiding sleeve 16 is limited between 27aYu the other end, end 27b.In addition,, except screw front end 26t is positioned at the situation of both ends 27a, 27b of bar ditch 27, guiding sleeve 16 is set as can not be towards axis direction relative sliding.
With respect to this, when screw front end 26t is positioned at both ends 27a, the 27b of bar ditch 27, guiding sleeve 16 can be towards axis direction relative sliding slightly.And screw front end 26 suppresses towards axis direction front by spring 24, and be entrenched in 27aHuo the other end, end 27b.Whereby, guiding sleeve 16 can not rotate relatively towards Zhou Fangxiang.
In the leading section side of guiding sleeve 16, form fenestrate portion 28.Window portion 28 be positioned at recess 19 near, and by the relative rotation of guiding sleeve 16, recess 19 is interdicted and even open.Referring to figs. 1 through Fig. 4, when being installed in the screw front end 26t of the screw 26 of guiding sleeve 16 and being positioned at an end 27a, guiding sleeve 16 is positioned at Zhou Fangxiang mono-side's the 1st position of rotation, and the different and blocking recess 19 in the Zhou Fangxiang position of window portion 28 and recess 19.So, guiding sleeve 16 remains on the collecting position in recess 19 by covering cutter 13 by cutter 13.
When making cutter 13 outstanding, guiding sleeve 16 is relatively rotated with respect to the main portion 12 of main shaft.So, the Zhou Fangxiang position of window portion 28 and the Zhou Fangxiang position consistency of recess 19, cutter 13 can expose.In addition, cutter 13 can be rotated and be erected by the elastic force pressure of spring 29.
With reference to Fig. 5 to Fig. 9, when being installed in the screw front end 26t of the screw 26 of guiding sleeve 16 and being positioned at the other end 27b, guiding sleeve 16 is positioned at Zhou Fangxiang the opposing party's the 2nd position of rotation, and window portion 28 makes recess 19 open with the Zhou Fangxiang position consistency of recess 19.So, by from window portion 28, cutter 13 being exposed, and cutter 13 is positioned at from window portion 28 towards the outstanding extrusion position of radial outside.
With reference to Fig. 8, back of the body Boring makes cutter 13 be connected to workpiece by one side, and one side makes the main portion 12 of main shaft carry out towards inverse time meter direction rotation.Cutter 13 affords the power of up time meter direction when cutting from workpiece, and the wall support of zoning recess 19 is positioned at the cutter 13 of extrusion position.Whereby, cutter 13 can, by the trying hard to recommend down of up time meter direction, can stably not carried on the back Boring.
When cutter 13 is submerged, guiding sleeve 16 is relatively rotated with respect to the main portion 12 of main shaft, and screw front end 26t is moved from 27bWang Yi end, the other end 27a.Now, cutter 13, in Fig. 8, is pushed over towards the frame 28p of window portion of the window portion 28 of inverse time meter direction rotation with respect to the main portion 12 of main shaft, and the elastic force pressure of antagonistic spring 29 and falling down along the main portion 12 of main shaft.Whereby, make cutter 13 get back to collecting position.
In the back of the body Boring of back of the body bore hole axle 11 that uses the present embodiment, haunting as shown in figure 10 of cutter, the fixing tool 101 of lathe makes to carry on the back bore hole axle 11 and advances, and circular segment is differed to 203 of 34 front sides that are urged to workpiece 201 (back of the body bore hole axle side) above, can automatically carry out whereby.
The order of back of the body Boring is described with reference to Figure 10.First, cutter is positioned under the state of collecting position, the fixing tool 101 of lathe makes to carry on the back bore hole axle 11 and inserts the lower hole 202 that passes to workpiece 201.The internal diameter in lower hole 202 is more bigger than the external diameter of the surf zone 16s of guiding sleeve 16, and the axis direction region 16b of guiding sleeve 16 can connect lower hole 202, and window portion 28 and axle front end components 22 are 204 outstanding from the back side.
Then, make to carry on the back bore hole axle 11 and advance, circular segment is differed to 203 of 34 front sides that are urged to workpiece 201 (back of the body bore hole axle side) above.So guiding sleeve 16 cannot cross above 203 and advance, and the main portion 12 of main shaft can advance.Whereby, spring 24 is compressed, and guiding sleeve 16 retreats slightly relatively with respect to the main portion 12 of main shaft.Whereby, remove the chimeric of screw front end 26t and an end 27a.
Then, the fixing tool 101 of lathe, with respect to guiding sleeve 16, makes the main portion 12 of main shaft relatively rotate towards a direction of rotation.Whereby, screw front end 26t can move along bar ditch 27 from an end 27a, and is positioned at the other end 27b.In addition, window portion 28 can move to the Zhou Fangxiang position of recess 19, and cutter 13 is positioned at extrusion position.
Then, the fixing tool 101 of lathe makes to carry on the back bore hole axle 11 and retreats, and guiding sleeve 16 can be suppressed to front by spring 24, and screw front end 26t and the other end 27b of screw 26 are chimeric.And one side makes to carry on the back 11 rotations of bore hole axle, one side retreats with cutting feed speed, makes cutter 13 be connected to the back side 204, and Boring is carried on the back in the back side 204.
When back of the body Boring is when finish, the fixing tool 101 of lathe makes to carry on the back bore hole axle 11 and advances, and by circular segment differ from 34 be urged to workpiece 201 front side (back of the body bore hole axle side) above 203.So guiding sleeve 16 cannot cross above 203 and advance, the main portion 12 of main shaft can advance.Whereby, spring 24 is compressed, and guiding sleeve 16 retreats slightly relatively with respect to the main portion 12 of main shaft.Whereby, remove the chimeric of screw front end 26t and the other end 27b.
Then, the fixing tool 101 of lathe makes the main portion 12 of main shaft relatively rotate towards another direction of rotation with respect to guiding sleeve 16.Whereby, screw front end 26t can move along bar ditch 27 from the other end 27b, and is positioned an end 27a.In addition, window portion 28 can be from the Zhou Fangxiang position of recess 19 away from, cutter 13 is positioned collecting position.
Then, the fixing tool 101 of lathe makes to carry on the back bore hole axle 11 and retreats, and 16 of guiding sleeves are suppressed to front by spring 24, and the screw front end 26t of screw 26 and an end 27a are chimeric.And, make to carry on the back bore hole axle 11 and retreat with quick rate of delivery, and extract out from lower hole 202.
In back of the body Boring described above, the fixing tool 101 of lathe is urged to workpiece 201 and rotation by making the circular segment of guiding sleeve 16 differ from 34, and automatically makes cutter 13 haunt.Yet the back of the body bore hole axle 11 of the present embodiment is not limited to automatically make cutter 13 to haunt, and do not get rid of by the main portion 12 of fixed main shaft and operator with manually make guiding sleeve 16 relatively rotation cutter 13 is haunted.
In addition, in the present embodiment, when cutter is submerged, the collecting position that can not submerge completely that has cutter 13 because cut the obstruction etc. of powder, and more or less from window portion towards the side-prominent situation of external diameter.When this urgent situation, screw 21 can be deviate from from the main portion 12 of main shaft, the damage of back of the body bore hole axle 11 and workpiece 201 can be suppressed to Min..
Particularly, under cutter 13 state side-prominent towards external diameter from window portion 28, with quick rate of delivery, make to carry on the back bore hole axle 11 while retreating, cutter 13 can clash into the bottom surface of the back of the body bore hole perforate at the back side 204, and can be applied to screw 21 than the power that is pulled away from of conventionally large axis direction.So screw 21 leading sections can be deviate from from the main portion 12 of main shaft, screw 21, axle front end components 22, pivot 23, cutter 13 can remain in the back side 204 sides from main shaft main portion 12 separation.In addition, the main portion 12 of main shaft and guiding sleeve 16 can be drawn out of from lower hole 202.
Figure 11 is for showing the side view of the cutting fluid path of back of the body bore hole axle 11.The main portion 12 of main shaft has the cutting fluid path 36 extending towards axis direction front from the rear end of handle of a knife portion 14.Cutting fluid path 36 is arranged on the inside of the main portion 12 of main shaft and extends towards axis direction, and its leading section 36f changes 90 degree directions and court's direction extension rectangular with axis.This cutting fluid path leading section 36f exposes and points to the cutter 13 extrusion position from window portion 28.Cutting fluid path 36 is supplied with cutting fluid from fixing tool 101 in back of the body Boring, and towards the direction of arrow, cutting fluid is ejected to cutter 13.Whereby, cutter 13 is cooling in back of the body Boring.
By above explanation, learnt, back of the body bore hole axle 11 according to the present embodiment, possesses guiding sleeve 16, this guiding sleeve 16 for a kind of can counterrotating mode to be arranged on the cylindrical body of the periphery of the main portion 12 of main shaft, and in side, there is window portion 28, and cover cutter 13 by the 1st position of rotation (referring to figs. 1 through Fig. 4) with Zhou Fangxiang mono-side, and cutter is remained on to collecting position, and by the 2nd position of rotation (with reference to Fig. 5 to Fig. 9) Zhou Fangxiang the opposing party, cutter 13 is exposed from window portion 28, and make cutter from window portion towards radial outside, give prominence to and be positioned at extrusion position.Whereby, can cutter be haunted to construct easily, favourable on cost.
In addition, according to the present embodiment, also possess the surface-treated layer 16s on the outer peripheral face that is formed on guiding sleeve 16, using as the region at least contacting with the lower hole 202 of the workpiece 201 that will process being arranged on the outer peripheral face of guiding sleeve 16, to reduce the low friction part with the friction of workpiece 201.Whereby, when back of the body bore hole axle 11 is inserted to the lower hole 202 of workpiece 201 and carried on the back Boring, can suitably reduce the rotational resistance between the inner peripheral surface in lower hole 202 and the outer peripheral face of guiding sleeve 16.
Moreover according to the present embodiment, guiding sleeve 16 is included in while advancing and the circular segment of surface 203 butts of workpiece 201 differs from 34, and in circular segment, differs from 34 and be provided with the fender 35 relaxing with the shock of workpiece 201.Whereby, circular segment is being differed to 34 while pressing against the surface 203 of workpiece, can not damage the surface of workpiece.And lathe makes to carry on the back bore hole axle 11 and advances and even retreat, automatically make whereby cutter haunt.
In addition, according to the present embodiment, main shaft has the main portion 12 of main shaft, as supporting the axle front end components 22 of cutter support portion of cutter 13 and pivot 23 and as the screw 21 that connects the linking part of the main portion of main shaft and cutter support portion, linking part is configured to: excessive remove both connection while being pulled away from power main shaft is applied between main portion and cutter support portion.Whereby, when automatically cutter 13 being haunted, even the collecting position just in case cutter does not fully submerge, and during more or less from window portion 28 towards the side-prominent situation of external diameter, also when extracting back of the body bore hole axle 11 out from lower hole 202, when cutter 13 clashes into the back side 204 of workpiece 201, want to be pulled away from the main portion 12 of main shaft and can be applied to screw 21 with the power that is excessively pulled away from of axle front end components 22.Whereby, the main portion 12 of main shaft can be separated with axle front end components 22, and cutter 13 departs from from main shaft.Therefore, can prevent from carrying on the back the serious damage of bore hole axle 11 or workpiece 201.
Moreover, according to the present embodiment, outer peripheral face in the main portion 12 of main shaft is formed with the bar ditch 27 extending towards Zhou Fangxiang, inner peripheral surface at guiding sleeve 16 is fixed with the screw front end 26t that belongs to the projection engaging with bar ditch 27, and screw front end 26t selectively remains on 27aJi the other end, end 27b of bar ditch 27.One end 27a is corresponding to the 1st position of rotation of guiding sleeve 16, and the other end 27b, corresponding to the 2nd position of rotation of guiding sleeve 16, therefore can easily carry out haunting of cutter 13, and can make cutter 13 remain on collecting position or extrusion position.
According to the present embodiment, the main portion 12 of main shaft has the cutting fluid path 36 that extends from axis direction rearward end towards front and cutting fluid is ejected to the cutter 13 of extrusion position.Whereby, can efficiently cutting fluid be supplied to back of the body bore hole, and can suitably carry out back of the body Boring.
The back of the body bore hole axle of variation of the present invention then, is described according to Figure 12.Back of the body bore hole axle 41 shown in Figure 12 is except cutter, and all parts and described back of the body bore hole axle 11 are common.The cutter 43 of back of the body bore hole axle 41 has: be arranged on the cutter body 46 of pivot and rotation and be arranged on cutter body 46 and become the insertion dististyle 44,45 of the cutter portion of cutting workpiece.Particularly, at the end edge of carrying on the back the cutter body 46 pointing to towards axis direction rear of bore hole axle 41, there is the dististyle 44 of insertion, at the front-end edge of the cutter body 46 pointing to towards axis direction the place ahead, there is the cutter portion 45 of insertion dististyle.
According to this variation, owing to thering is respectively cutter portion in axis direction rear end side and axis direction front, therefore not only can utilize at the back side 204 that is inserted with the workpiece 201 of back of the body bore hole axle 41 the cutter portion 44 of rear end side to implement back of the body Boring to form back of the body bore hole perforate 205, can also utilize on the surface 203 of workpiece 201 the cutter portion 45 execution table Borings of front to form bore hole perforate 206.And, can be positioned at than workpiece 201 more the surface 208 execution table Borings of the dorsal part workpiece 207 of the position of front to form bore hole perforate 209.Moreover, can insert in the lower hole 210 of dorsal part workpiece 207 logical back of the body bore hole axle 41, and can implement back of the body Boring to the back side 211 of dorsal part workpiece 207, and can show 2 kinds of processing of Boring and back of the body Boring.And, by the total length of selected back of the body bore hole axle 41, also can be positioned at than dorsal part workpiece 207 the more not shown dorsal part workpiece of the position of front implement Boring.
The back of the body bore hole axle of another embodiment of the present invention then, is described according to Figure 13.Figure 13 be biopsy cavity marker devices another embodiment of the present invention want portion's side view.According to this embodiment, for giving same symbol 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 51 of the embodiment shown in Figure 13, the pipe component 52 that the outer peripheral face of itself is carried out to low friction treatment is set, to replace surface-treated layer 16s.
Pipe component 52 is configured in the position that differs from 34 more close axis direction front than circular segment, by circular segment, differs from 34 restrictions towards the movement at axis direction rear.Near window portion 28, be provided with the clamping ring 53 extending towards Zhou Fangxiang along the outer peripheral face of guiding sleeve 16.Clamping ring 53 is configured in than the position at the more close axis direction of window portion 28 rear, to prevent that pipe component 52 from coming off towards axis direction the place ahead.The axis direction size that is preferably pipe component 52 is longer than the length dimension in lower hole 202.On the outer peripheral face of pipe component 52, be formed with the surface-treated layer 52s through low friction treatment.This surface-treated layer 52s such as ion Plasma Nitriding Treatment, DLC (Diamond Like Carbon) coating processing, TiN (titanium nitride) coating processing and mirror-like milled processed etc.
Back of the body bore hole axle 51 according to the embodiment shown in Figure 13, because the region at least contacting with the lower hole of the workpiece that will process on the outer peripheral face at guiding sleeve 16 is provided with pipe component 52, therefore when carrying on the back Boring, can between the periphery of back of the body bore hole axle 51 and the inner peripheral surface in lower hole, reduce rotational resistance.In addition, pipe component 52 also can together rotate with guiding sleeve 16.
With regard to variation, pipe component 52 also can be can rotate mode freely to be supported on the periphery of guiding sleeve 16 than the position of the more close axis direction rear end side of window portion 28 relatively.
Then, the back of the body bore hole axle for another embodiment of the present invention, describes according to Figure 14.Figure 14 is the exploded perspective view that schematically shows another embodiment of the present invention.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 61 shown in Figure 14, possess and have: the main shaft 62 of cylindrical shape, becomes the inserted-shape of the fixing tool that can be installed in lathe along Axis Extension and axis direction rearward end; Guiding sleeve 16, is covered by the leading section of main shaft 62; And cutter 13, be arranged on the position of the close front end of main shaft 62.
In the position at rear more of the leading section 62s than main shaft 62, form in order to accommodate the recess 19 of cutter 13.In addition, the periphery at main shaft 62 forms the bar ditch 63 extending abreast with the axis of carrying on the back bore hole axle 61.Bar ditch 63 spread all over the 62s of front-end of spindle portion, recess 19, than recess 19 more rear region 62k and extend.
In the centre that extends into the pivot 64 of linearity, cutter 13 is set.The two ends of pivot 64 are outstanding from cutter 13 respectively.The pivot 64 that pivot props up cutter 13 is housed in bar ditch 63.Whereby, the leading section 64s of pivot 64 is configured in the 62s of front-end of spindle portion, and the back-end region of pivot 64 is configured in rear-end of spindle region 62k.
Guiding sleeve 16 relatively rotates with respect to main shaft 62.And, by the 1st position of rotation Zhou Fangxiang mono-side, cover cutter 13, cutter is remained on to the collecting position in recess 19.In addition, at Zhou Fangxiang the opposing party's the 2nd position of rotation, cutter 13 is exposed from window portion 28, and make cutter 13 outstanding and be positioned at extrusion position from window portion 28 towards radial outside.
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 (10)
1. a back boring cutting tool, is characterized in that, possesses:
Main shaft, along Axis Extension, and axis direction rearward end has the inserted-shape of the fixing tool that can be mounted to lathe;
Pivot, is arranged on the axis direction leading section of described main shaft, extends abreast with axis;
Cutter, is propped up at described pivot by axle 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, by being surrounded on the elastic force pressure of the described pivot extending abreast with axis, described cutter being rotated and erect to described extrusion position; And
Guiding sleeve, for can counterrotating mode to be arranged on the cylindrical body of the periphery of main shaft, and there is window portion in the side of cylindrical body, by the 1st position of rotation Zhou Fangxiang mono-side, cover described cutter and cutter is remained on to described collecting position, and 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 by the 2nd position of rotation Zhou Fangxiang the opposing party, by being rotated towards Zhou Fangxiang mono-side from Zhou Fangxiang the opposing party, Zhou Fangxiang the opposing party's of described window portion window portion frame pushes over described cutter to described collecting position.
2. back boring cutting tool according to claim 1, is characterized in that, further possesses low friction part, is arranged on the region at least contacting with the lower hole of the workpiece that will process on the outer peripheral face of described guiding sleeve, to lower the friction with workpiece.
3. back boring cutting tool according to claim 2, is characterized in that, described low friction part is the surface-treated layer being formed on the outer peripheral face of described guiding sleeve.
4. back boring cutting tool according to claim 2, is characterized in that, described low friction part is arranged on the pipe component on the outer peripheral face of described guiding sleeve.
5. back boring cutting tool according to claim 1, is characterized in that, described guiding sleeve be included in while advancing and the section of the surperficial butt of workpiece poor, and be provided with in order to relax and the fender of the shock of workpiece described section of difference.
6. back boring cutting tool according to claim 1, is characterized in that, described main shaft has:
Main portion;
Cutter support portion, supports described cutter; And
Linking part, connects described main portion and described cutter support portion;
Described linking part is configured to: to applying between described main portion and described cutter support portion, excessive remove both connection while being pulled away from power.
7. back boring cutting tool according to claim 1, is characterized in that, at the inner peripheral surface of described guiding sleeve or the outer peripheral face of described main shaft one side, is formed with the bar ditch extending towards Zhou Fangxiang;
The opposing party at the inner peripheral surface of described guiding sleeve or the outer peripheral face of described main shaft is formed with the projection engaging with described ditch;
Described projection is optionally maintained at an end and the other end of described ditch.
8. back boring cutting tool according to claim 1, is characterized in that, described main shaft has the cutting fluid path that extends from axis direction rearward end towards front and cutting fluid is ejected to the described cutter described extrusion position.
9. back boring cutting tool according to claim 1, is characterized in that, described cutter has cutter portion in axis direction rear end side and axis direction front respectively.
10. back boring cutting tool according to claim 1, is characterized in that, described cutter has cutter body and is arranged on the insertion dististyle of described cutter body and cutting workpiece.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-205026 | 2010-09-14 | ||
| JP2010205026A JP5289402B2 (en) | 2010-09-14 | 2010-09-14 | Counterbore cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102398052A CN102398052A (en) | 2012-04-04 |
| CN102398052B true CN102398052B (en) | 2014-07-30 |
Family
ID=45880931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110058190.9A Active CN102398052B (en) | 2010-09-14 | 2011-03-08 | Back Boring Cutting Tool |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5289402B2 (en) |
| CN (1) | CN102398052B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6555145B2 (en) * | 2016-02-03 | 2019-08-07 | 三菱電機株式会社 | Cutting tool, processing device having cutting tool, and processing method using cutting tool |
| CN106216744B (en) * | 2016-08-17 | 2018-02-06 | 哈尔滨哈锅锅炉工程技术有限公司 | A kind of boiler header the machining of drilling instrument |
| CN109692986A (en) * | 2019-02-28 | 2019-04-30 | 溧阳市飞跃机电有限公司 | Reverse counterboring device for wind power generating set support |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48109574U (en) * | 1972-03-21 | 1973-12-17 | ||
| JPS48109575U (en) * | 1972-03-21 | 1973-12-17 | ||
| 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 |
| WO1996005928A1 (en) * | 1994-08-23 | 1996-02-29 | H. Granlund Tools Kb | Coolant actuated rear-end countersinking tool |
| DE19739621A1 (en) * | 1997-09-10 | 1999-03-11 | Heule Ulf | Centrifugal controlled deburring tool |
| 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 |
| JP2003205407A (en) * | 2002-01-09 | 2003-07-22 | Nippon Pneumatic Mfg Co Ltd | Counter boring tool, and counter boring method using the tool |
-
2010
- 2010-09-14 JP JP2010205026A patent/JP5289402B2/en active Active
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2011
- 2011-03-08 CN CN201110058190.9A patent/CN102398052B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012061525A (en) | 2012-03-29 |
| JP5289402B2 (en) | 2013-09-11 |
| CN102398052A (en) | 2012-04-04 |
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