CN101574747A - Pin mirror cutter - Google Patents

Abstract

The invention relates to a pin mirror cutter and a throw-away tip fitted to the cutter, wherein cutting resistance is reduced effectively, the strength of a cutter body is kept high, and manufacture is facilitated. Therefore, cutting edges are formed at the intersecting ridgeline parts between a pair of oppositely disposed long side faces 22 and 22 of a substantially trapezoidal flat-plate-shaped tip body 20 and upper and lower faces 21 and 21 of the tip body 20. A tip is mounted on a first tip mounting seat 13 formed in a peripheral face of the cutter body 10 such that a thickness direction of the tip body 20 is approximately aligned with a radial direction of the cutter body 10 to provide curved edges 25A formed in acute corner parts 24A of the tip body 20 for cutting. The tip is mounted on a second tip mounting seat 14 formed in an end face 12A (12B) of the cutter body 10 such that the thickness direction of the tip body 20 is approximately aligned with the direction of an axis O of the cutter body 10 to provide curved edges 25A formed in obtuse corner parts 24B of the tip body 20 for cutting.

Description

Pin mirror cutter

The application divides an application, and the application number of its female case is 200480032906.6; The applying date is on October 26th, 2004; Denomination of invention is " pin mirror cutter and a throw away chip mounted thereto ".

Technical field

The present invention relates to a kind ofly for example be used in toward the pin mirror cutter of the bent axle of double-lift internal combustion engine and throw away chip (to call blade in the following text) mounted thereto, relate in particular to the installing mechanism when the adapter that is installed on processing machine is installed pin mirror cutter in order to process.

Background technology

Known in the past, for example disclosed in patent documentation 1, so-called built in type pin mirror cutter.

This pin mirror cutter, on the inner peripheral surface of the cutter body of the formation approximate circle ring-type of rotating around axis direction, be formed with a plurality of first blade mount pads, simultaneously, on the both ends of the surface of cutter body, be formed with a plurality of second blade mount pads,, be separately installed with the blade of same kind for these the first blade mount pads and the second blade mount pad.

This blade, in the intersection crest line portion of the top and bottom of a pair of side of the relative configuration that forms the flat blade body of approximate parallelogram and blade body, be formed with and add up to eight cutting edges, a pair of side the opposing party different with above-mentioned a pair of side, the zone of obtuse angle corner part one side by cutting away blade body makes its corner angle become big, and this opposing party's a pair of side is made of two walls and form outstanding chevron shape in foreign side's side of blade body.And convex surface shape is processed in the coupling parts that are connected with a pair of side above-mentioned the opposing party the top and bottom of blade body chamfering respectively.

Be installed on the blade of the first blade mount pad, make a cutting edge in the acute corners portion formation of the flat blade body of this formation approximate parallelogram, outstanding from the inner peripheral surface of cutter body, and make axial rake (direction of principal axis anterior angle): just, radial rake (radial rake): negative, become the pin sword of outer peripheral face of the pin portion (axial region) of machining crankshafts.

And, be installed on the blade of the second blade mount pad, make a cutting edge that forms at the obtuse angle of the flat blade body of this formation approximate parallelogram corner part, outstanding from the end face of cutter body, and make axial rake (direction of principal axis anterior angle): negative, radial rake (radial rake): negative, become the waveform sword of side of counterweight (counter weight) portion of machining crankshafts.

In this pin mirror cutter, be installed in first and second blade mount pad by blade with same kind, make the cutting edge that on a blade, is formed at eight positions be respectively applied for cutting, thereby can realize the control tool expense.And, possesses blade by use with the flat blade body of approximate parallelogram as above-mentioned the opposing party's a pair of side, for the blade that is installed on the first blade mount pad, just be set at being provided for, and seek the reduction of cutting resistance as its axial rake of selling the cutting edge of sword.

Known in the past, a kind of pin mirror cutter, possess: be installed on the adapter of approximate circle ring-type of processing machine and the cutter body of the approximate circle ring-type of rotating around axis by the interior perimembranous that is installed on this adapter, on cutter body, be formed with, flange part from the side-prominent approximate ring-type of the complete circumferentially outer radial periphery of its outer peripheral face, on adapter, be formed with, at the end difference that in the complete circumferentially outer radial periphery side depression of inner circumferential surface, bears the approximate ring-type of above-mentioned flange part.

In this pin mirror cutter, if cutter body is inserted the interior perimembranous of adapter along its axis direction, then the end difference face of the flange part of cutter body and adapter contacts and radially overlapped at cutter body, thereby cutter body is positioned in axis direction with respect to adapter.And, for the chimeric a plurality of key members of a plurality of notch that are recessed to form from the inside all sides of the outer peripheral face radius vector of cutter body, by push a side's of cutter body end face by a plurality of pressing plates, thereby cutter body circumferentially is being fixed in adapter, simultaneously, make the axis of cutter body roughly consistent, thereby cutter body is installed in the interior perimembranous of adapter with the axis of adapter.

But, in this pin mirror cutter in the past, contact and the contact-making surface of the approximate ring-type that forms for the end difference face of the flange part of cutter body and adapter, the length radially of this cutter body is set to longer, though push a side's of cutter body end face by a plurality of pressing plates, have the problem that is weaker than big load (load at axis direction of cutter body) in thrust direction.Promptly, be installed at cutter body under the state of adapter, by being applied to the load of thrust direction, the end difference bending of the flange part of cutter body or adapter, be created in departing from of thrust direction (axis direction of cutter body) with this cutter body with respect to adapter, therefore, can worsen the wobble accuracy of a plurality of cutting edges of the interior perimembranous that is arranged at this cutter body.

And, a kind of pin mirror cutter is disclosed in patent documentation 2, on cutter body, be formed with, from its outer peripheral face to the side-prominent a plurality of juts of outer radial periphery, on adapter, be formed with, at a plurality of notch that in outer radial periphery side depression, are used for chimeric above-mentioned a plurality of juts from inner circumferential surface, above-mentioned a plurality of jut and a plurality of notch form respectively, make towards the distance between circumferential a pair of side along with the gradually little taper of front side towards cutter direction of insertion (direction when cutter body is inserted into the interior perimembranous of adapter).

In this pin mirror cutter, when its axis direction inserts the interior perimembranous of adapter with cutter body, be embedded in a plurality of notch of adapter respectively by a plurality of juts that make cutter body, thereby cutter body is positioned at its axis direction with respect to adapter, simultaneously, cutter body circumferentially is being fixed with respect to adapter, and the axis of cutter body is roughly consistent with the axis of adapter.And by being pushed a side's of cutter body end face by a plurality of pressing plates, thereby cutter body is installed in the interior perimembranous of adapter.

In the past, known pin mirror cutter possessed: be installed on the adapter of approximate circle ring-type of processing machine and the cutter body of the approximate circle ring-type of rotating around axis by the interior perimembranous that is installed on this adapter.For example, patent documentation 2 discloses a kind of pin mirror cutter, on cutter body, be formed with, from its outer peripheral face to the side-prominent a plurality of juts of outer radial periphery, on adapter, be formed with, in outer radial periphery side depression, make the chimeric a plurality of notch of above-mentioned a plurality of jut from inner circumferential surface, above-mentioned a plurality of jut and a plurality of notch form respectively, make towards the distance between circumferential a pair of side along with the gradually little taper of front side towards cutter direction of insertion (direction when cutter body is inserted into the interior perimembranous of adapter).

In this pin mirror cutter, when its axis direction is inserted into the interior perimembranous of adapter with cutter body, be embedded in a plurality of notch of adapter respectively by a plurality of juts that make cutter body, thereby cutter body is positioned at its axis direction with respect to adapter, simultaneously, cutter body circumferentially is being positioned with respect to adapter, and the axis of cutter body is roughly consistent with the axis of adapter.And by being pushed a side's of cutter body end face by a plurality of pressing plates, thereby cutter body is installed in the interior perimembranous of adapter.

[patent documentation 1] TOHKEMY 2002-46009 communique

[patent documentation 2] Japanese kokai publication hei 8-118125 communique

But, in patent documentation 1 disclosed pin mirror cutter, axial rake is set to the cutting edge of positive conduct pin sword, be formed at the acute corners of the flat blade body of the approximate parallelogram portion that becomes, simultaneously, this blade body has, the opposing party's who is cut off as the zone of above-mentioned obtuse angle corner part side a pair of side, so, be formed at the radial rake as the cutting edge of waveform sword of the obtuse angle corner part of blade body, become very big to the negative angle side.Therefore present situation is, with patent documentation 1 disclosed pin mirror cutter, can not become the effective solution mechanism that seeks that cutting resistance reduces.

And, the blade body of this blade, a pair of side with the opposing party who is cut off as above-mentioned obtuse angle corner part, if just this part of cutting away and the length of non-lengthen blade body, then can not fully guarantee the length of cutting edge, the space of occupying that is formed at the blade mount pad of cutter body becomes big, and reduces the intensity of this cutter body.In addition, because blade body is complex-shaped,, cause the problem of processing cost increase so it makes difficulty.

Summary of the invention

The present invention is the invention of making in view of the above problems, and its first purpose can reduce cutting resistance effectively for providing a kind of, and can keep the intensity of very high cutter body, and pin mirror cutter of making easily and blade mounted thereto.

But, in these patent documentation 2 disclosed pin mirror cutters, though the load in thrust direction is strong, but the cutter body is with respect to the location at axis direction of adapter, just jut by forming taper and the notch that forms taper chimeric carried out, so, by adding the heat in metal cutting that produces man-hour during the adapter thermal expansion, if change cutter body, the problem that then has this cutter body to depart from axis direction with respect to adapter.Promptly, because adapter thermal expansion, the width that is formed at a plurality of notch of this adapter broadens, so, if the jut of the cutter body of the chimeric normal temperature of notch that broadens at this width, then cutter body too is inserted into the inside of the interior perimembranous of adapter, thereby can worsen the wobble accuracy of a plurality of cutting edges of the interior perimembranous that is arranged at cutter body.

The present invention is the invention of making in view of above-mentioned problem, even its second purpose is for providing a kind of for load or heat in metal cutting in thrust direction, cutter body is departed from axis direction with respect to adapter, thereby can keep the pin mirror cutter of the wobble accuracy of very high cutting edge.

But, in these patent documentation 2 disclosed pin mirror cutters, be positioned at a plurality of juts gap each other that is formed at cutter body, open at the both ends of the surface side of cutter body, and be formed at a plurality of notch of adapter, open at the both ends of the surface side of adapter.

Therefore, the rigidity separately that can not keep very high cutter body and adapter, with this, can not keep very high installation rigidity when cutter body is installed on adapter, then produce with respect to the departing from of the cutter body of adapter, have the problem of the wobble accuracy of a plurality of cutting edges that worsen the interior perimembranous that is arranged at this cutter body.

The present invention is the invention of making in view of above-mentioned problem, its the 3rd purpose is for providing a kind of, keep very high installation rigidity when cutter body is installed on adapter, can not produce cutter body with respect to the departing from of adapter, can keep well and the pin mirror cutter of the wobble accuracy of lasting cutting edge.

In order to address the above problem, and reach above-mentioned first purpose, pin mirror cutter of the present invention, it is characterized in that, on the side face of the cutter body of the formation approximate circle ring-type of rotating, be formed with the first blade mount pad around axis, on the end face of described cutter body, be formed with the second blade mount pad, be equipped with on the described first blade mount pad: the intersection crest line portion in the top and bottom of a pair of side that the quilt that forms the flat blade body of approximate trapezoid disposes relatively and described blade body is formed with the blade of cutting edge, make thickness direction and described cutter body radially roughly consistent of described blade body, the cutting edge that is formed at the acute corners portion of described blade body is offered cutting, described blade is installed on the described second blade mount pad, make that the thickness direction of described blade body is roughly consistent with the axis direction of described cutter body, the cutting edge that is formed at the obtuse angle corner part of described blade body is offered cutting.

In addition, blade of the present invention is the blade that is installed on pin mirror cutter of the present invention, it is characterized in that the intersection crest line portion in the top and bottom of a pair of side that the quilt that forms the flat blade body of approximate trapezoid disposes relatively and described blade body is formed with cutting edge.

In order to solve described problem, and reach described second purpose, pin mirror cutter of the present invention possesses: the adapter that is installed on processing machine; Cutter body with the approximate circle ring-type of rotating around axis by being installed on this adapter, it is characterized in that, be formed with at described cutter body, the radially flange part of outstanding approximate ring-type from the complete circumferential described cutter body of its side face, be formed with at described adapter, from the radial depressions of the complete circumferential described cutter body of its side face and bear the end difference of the approximate ring-type of described flange part, be installed at described cutter body under the state of described adapter, described flange part is contacted with the radially overlapped mode face at described cutter body with described end difference, and the length that makes progress of the footpath at described cutter body of this contact-making surface is set at the scope of 0.1D～1.0D with respect to the thickness D of described cutter body.

In order to solve described problem, and reach described the 3rd purpose, pin mirror cutter of the present invention possesses: the adapter that is installed on processing machine; Cutter body with the approximate circle ring-type of rotating around axis by being installed on this adapter, it is characterized in that, be formed with at described cutter body, the radially flange part of outstanding approximate ring-type from the complete circumferential described cutter body of its side face, be formed with at described adapter, from the radial depressions of the complete circumferential described cutter body of its side face and bear the end difference of the approximate ring-type of described flange part, wall relative on the described flange part and the side among the wall relative on the described end difference with described flange part with described end difference, be formed with to the outstanding protuberance of the axis direction of described cutter body, be formed with to the axis direction depression of described cutter body and make the chimeric recess of described protuberance the opposing party.

In addition, in the present invention, be preferably described protuberance and be formed, the distance towards between circumferential a pair of side is diminished towards projected direction, described recess is formed, and the distance towards between circumferential a pair of side is diminished towards the depression direction.

The invention effect

According to such the present invention, the blade body of blade that is installed in the same kind of first and second blade mount pad forms aforesaid approximate trapezoid tabular, be installed on the blade of the first blade mount pad, the cutting edge that is formed at the acute corners portion of blade body is offered cutting as the pin sword, be installed on the blade of the second blade mount pad, the cutting edge that is formed at the obtuse angle corner part of blade body is offered cutting as the waveform sword, therefore, cutting edge for the conduct pin sword on the blade that is installed on the first blade mount pad can be set at its axial rake just.And, blade body forms the approximate trapezoid tabular, each side by the opposing party different with above-mentioned a pair of side is made of a wall, for the cutting edge on the blade that is installed on the second blade mount pad as the waveform sword, though it is negative that its radial rake is set to, can obviously not become big towards the negative angle side.Therefore, in the present invention, cutting resistance can be effectively reduced, and the processing of high accuracy and stable bent axle can be carried out continuously.

In addition, a pair of side by the opposing party on the blade body is made of a wall respectively, even the length of lengthen blade body can not guaranteed cutting edge length fully yet, and dwindle the space of occupying of the blade mount pad that is formed at cutter body, thereby can keep the intensity of very high this cutter body.

And then, because the simple shape of blade body so it is easy to manufacture, can be sought the reduction of processing cost.

In addition, according to the present invention, be installed at cutter body under the state of adapter, because the flange part of cutter body and the end difference of adapter contact with the radially overlapped mode face at cutter body, cutter body is positioned at axis direction with respect to adapter, so even change cutter body because of the thermal expansion of heat in metal cutting adapter the time, this cutter body that is replaced also can produce on axis direction with respect to adapter hardly and depart from.

And, contact and the contact-making surface of the approximate ring-type that forms about the end difference face of the flange part of cutter body and adapter, because its length setting that makes progress in the footpath of this cutter body is below 1.0D, even so on thrust direction, apply big load, flange part or end difference also are difficult to bending, thereby can not take place because of causing that at the load on the thrust direction cutter body departs from axis direction with respect to adapter.In addition, about the contact-making surface of above-mentioned approximate ring-type, because its length setting that makes progress in the footpath of this cutter body is more than 0.1D, so can not damage the positioning function of cutter body with respect to adapter.

Therefore, can keep the wobble accuracy of a plurality of cutting edges that very high perimembranous in cutter body is provided with, and then, crank processing precision can be improved.

In addition, be preferably in the present invention, on described cutter body, be formed with, from its side face to radially outstanding a plurality of juts, be formed with on the described adapter, from its side face to radially the depression a plurality of notch, be installed at described cutter body under the state of described adapter, by making described a plurality of jut be embedded in described a plurality of notch respectively, described cutter body upwards is fixed in week with respect to described adapter, makes the axis of described cutter body roughly consistent with the axis of described adapter simultaneously.

In addition, according to the present invention, be installed at cutter body under the state of adapter, make raised part be embedded in above-mentioned recess, cutter body is positioned on its axis direction with respect to adapter, cutter body upwards is fixed in its week with respect to adapter, and, make the axis of cutter body roughly consistent with the axis of adapter.

And, raised part is formed, outstanding from the flange part or the above-mentioned wall on the end difference of above-mentioned approximate ring-type to the axis direction of cutter body, above-mentioned recess is formed, cave in to the axis direction of cutter body from the end difference or the above-mentioned wall on the flange part of above-mentioned approximate ring-type, thus, be positioned at protuberance gap or recess each other, can not open at the both ends of the surface side of cutter body or the both ends of the surface side of adapter, can keep the rigidity separately of very high cutter body and adapter.

Therefore, owing to can keep the very high installation rigidity when cutter body is installed on adapter, so can not produce cutter body departing from respect to adapter, can continue to keep the wobble accuracy of a plurality of cutting edges that are arranged at this cutter body well, and then, can improve crank processing precision.

Description of drawings

Fig. 1 is that the major part of end face of cutter body of the pin mirror cutter of embodiments of the present invention 1 is amplified key diagram;

Fig. 2 is that the major part of inner peripheral surface of cutter body of the pin mirror cutter of embodiments of the present invention 1 is amplified key diagram;

Fig. 3 (a) (b) is the A direction side view of this blade for expression is installed on the vertical view of the blade body of the blade on the pin mirror cutter of embodiment of the present invention 1, and the B direction that (c) is this blade is to view;

Fig. 4 is the vertical view of the pin mirror cutter of embodiments of the present invention 2;

Fig. 5 is the major part enlarged drawing of pin mirror cutter shown in Figure 4;

Fig. 6 is the X-X line sectional view of Fig. 5;

Fig. 7 is the Y-Y line sectional view of Fig. 5;

Fig. 8 is the Z-Z line sectional view of Fig. 5;

Fig. 9 is the sectional view of first variation of expression jut and notch;

Figure 10 is the sectional view of second variation of expression jut and notch;

Figure 11 is the vertical view of the pin mirror cutter of embodiments of the present invention 3;

Figure 12 is the major part enlarged drawing of pin mirror cutter shown in Figure 11;

Figure 13 is the X-X line sectional view of Figure 12;

Figure 14 is the figure when the end face of the dorsal part of the cutter body of pin mirror cutter shown in Figure 12 is observed it;

Figure 15 is that the Y direction of Figure 14 is to view;

Figure 16 is the figure when the end face of the table side of the adapter of pin mirror cutter shown in Figure 12 is observed it;

Figure 17 is that the Z direction of Figure 16 is to view.

Symbol description:

10: cutter body

11: inner peripheral surface

12A, 12B: end face

13: the first blade mount pads

14: the second blade mount pads

20: blade body

21: top, below

21A, 21B: curvature portion

22: long side surface

23: short side

24A: acute corners portion

24B: obtuse angle corner part

25A: curve sword

25B: straight line sword

A: axial rake

R: radial rake

O: the axis of cutter body

T: cutter direction of rotation

2-10: adapter

2-11: inner peripheral surface

2-12: end difference

2-13: restriction face

2-14: notch

2-30: pressing plate

2-50: cutter body

2-51: outer peripheral face

2-52: flange part

2-53: restriction face

2-54: jut

3-10: adapter

3-11: inner peripheral surface

3-12: end difference

3-13: wall

3-14: recess

3-15: side

3-30: pressing plate

3-50: cutter body

3-51: outer peripheral face

3-52: flange part

3-53: wall

3-54: protuberance

3-55: side

The specific embodiment

(embodiment 1)

Below, with reference to the pin mirror cutter of accompanying drawing 1～3 explanation embodiments of the present invention 1.

The cutter body 10 of the pin mirror cutter of embodiments of the present invention 1, shown in the major part enlarged drawing of Fig. 1～Fig. 2, form rotate around axes O and be the approximate circle ring-type at center with the axes O.

In this cutter body 10, on the inner peripheral surface 11 of the inside all sides in footpath, along cutter body 10 circumferentially slightly uniformly-spaced to be formed with a plurality of first blade mount pads 13 ... on each inner peripheral surface 11 sides of both ends of the surface 12A, the 12B of axes O direction foreign side side, along cutter body 10 circumferentially slightly uniformly-spaced to be formed with a plurality of second blade mount pads 14 ...

Be formed at a plurality of first blade mount pads 13 on the inner peripheral surface 11 of cutter body 10 ... make progress in week, be disposed near the first blade mount pad 13 the end face 12A of the side among both ends of the surface 12A, the 12B of cutter body 10, and be disposed near the opposing party's the end face 12B the first blade mount pad 13, cutter body 10 circumferentially on arrange alternately.

Be formed at a plurality of second blade mount pads 14 on a side the end face 12A of cutter body 10 ... be arranged in circumferentially, make it be configured in a plurality of first blade mount pads 13 that near the inner peripheral surface 11 the opposing party's end face 12B forms ... each, the rear side a little of cutter direction of rotation T, be formed at a plurality of second blade mount pads 14 on the opposing party's the end face 12B of cutter body 10 ... also be arranged in circumferentially, make it be configured in a plurality of first blade mount pads 13 that near the inner peripheral surface 11 a side end face 12A forms ... each, the rear side a little of cutter direction of rotation T.

And, as shown in Figure 3, be installed on as the first above-mentioned blade mount pad 13 ... and the second blade mount pad 14 ... the blade body 20 of blade form the approximate trapezoid tabulars, and possess: the top and bottom that are parallel to each other 21,21 of configuration relatively at the two ends of the thickness direction of blade body 20; The a pair of long side surface 22,22 (a pair of side of the side) of configuration relatively at the two ends of the width of blade body 20; And at the two ends of the length direction of blade body 20 a pair of short side 23,23 that is parallel to each other (the opposing party's a pair of side) of configuration relatively.Therefore, blade body 20, face observation from it (thickness direction along blade body 20 is observed) shown in Fig. 3 (a), possesses: a pair of acute corners 24A of portion, the 24A that have roughly the same corner angle mutually; The a pair of obtuse angle corner part 24B, the 24B that have identical corner angle equally mutually.

At this, substantial middle portion in blade body 20 is formed with inserting hole 20A, it is logical that described inserting hole 20A is used for making with the bolting blade time employed fishbolt to insert, and connect the thickness direction (left and right directions in Fig. 3 (b) is with top and bottom 21 direction of quadrature roughly) of this blade body 20.

The a pair of long side surface 22,22 of blade body 20, constituted by a near flat face respectively with respect to the thickness direction almost parallel of blade body 20, the a pair of short side 23,23 of blade body 20 also is made of a near flat face with respect to the thickness direction almost parallel of blade body 20 respectively.

The top and bottom 21,21 of blade body 20, respectively in the both end sides part of the length direction (left and right directions among Fig. 3 (a)) of blade body 20, intersect at a pair of short side 23,23 of blade body 20 respectively, shown in Fig. 3 (c), the both end sides of the above-mentioned length direction separately of top and bottom 21,21 partly is processed to convex surface shape.

In top and bottom 21, connect a pair of acute corners 24A of portion, the 24A coupling part with short side 23 side to each other, shown in the left field of Fig. 3 (c), for connecting the curvature portion 21A of short side 23 smoothly, connect a pair of obtuse angle corner part 24B, the 24B coupling part with short side 23 the opposing party to each other, shown in the right side area of Fig. 3 (c), for being not the curvature portion 21B that connects short side 23 smoothly.

And on blade body 20, the intersection crest line portion in a pair of long side surface 22,22 and top and bottom 21,21 is formed with cutting edge.

Specifically, the intersection crest line portion of 21,21 separately curvature portion 21A, 21A, 21B, 21B and a pair of long side surface 22,22 in top and bottom, add up to and be formed with eight curve sword 25A that become approximate convex curve shape, intersection crest line portion at part of removing separately curvature portion 21A, the 21A of top and bottom 21,21,21B, 21B and a pair of long side surface 22,22, add up to and be formed with four straight line sword 25B that become the near linear shape, on a blade, be formed with, add up to eight curve sword 25A ... with four straight line sword 25B of total ...

Blade as constituted above, with respect to the first blade mount pad 13, the thickness direction that makes blade body 20 is radially roughly consistent with cutter body 10, lead in the installation that is fixed of the fishbolt 15 of the inserting hole 20A of blade body 20 by inserting, make in a pair of long side surface 22,22 one towards cutter direction of rotation T front side as the front.

Be installed on the blade of the first blade mount pad 13, make eight curve sword 25A formed thereon ... in the 24A of the acute corners portion that is formed at a curve sword 25A (especially, constituting top and bottom 21,21 and short side 23, four curve swords of total 25A that the intersection crest line portion of the curvature portion 21A of 23 mutual cross sections and long side surface 22 forms ... in a curve sword 25A), from the inner peripheral surface of cutter body 10 to above-mentioned radially in week side-prominent, side-prominent from the end face 12A (12B) of cutter body 10 simultaneously to above-mentioned axes O direction foreign side, and make the straight line sword 25B that is connected in this curve sword 25A, from the inner peripheral surface 11 of cutter body 10 to above-mentioned radially in week side-prominent.

The pin sword that is configured to the outer peripheral face of the curve sword 25A of this outstanding state and the pin portion (axial region) that straight line sword 25B becomes machining crankshafts.

And, the curvature portion 21A that links to each other with cutter direction of rotation T rear side as the curve sword 25A of pin sword, along with towards cutter direction of rotation T rear side and oblique towards above-mentioned outer radial periphery inclination, simultaneously, along with square inclination towards cutter direction of rotation T rear side and in above-mentioned axes O direction is oblique, this curvature portion 21A that forms as the flank of the curve sword 25A of pin sword forms the crack, back.

Therefore, as the radial rake R (anterior angle radially) of the curve sword 25A of pin sword, by making this curve sword 25A along with tilting towards cutter direction of rotation T front side, and be set to negative (for example-8 °) towards above-mentioned outer radial periphery side.

To this, as the axial rake A (axial anterior angle) of the curve sword 25A of pin sword, tilt towards cutter direction of rotation T rear side along with square side in above-mentioned axes O direction, and be set to just (for example 6 °) by making this curve sword 25A.

Promptly, because have the long side surface 22 and the acutangulate acute corners 24A of portion of short side 23 intersections that form the front, so even the curvature portion 21A that forms as the flank of the curve sword 25A of pin sword forms the crack, back, also the axial rake as the curve sword 25A of pin sword just can be set at.

And, blade as constituted above, with respect to the second blade mount pad 14, make the thickness direction of blade body 20 roughly consistent with the axes O direction of cutter body 10, lead in the installation that is fixed of the fishbolt 15 of the inserting hole 20A of blade body 20 by inserting, to make in a pair of long side surface 22,22 one towards cutter direction of rotation T front side and as the front.

Be installed on the blade of the second blade mount pad 14, make eight curve sword 25A formed thereon ... in a curve sword 25A who is formed at obtuse angle corner part 24B (especially, four curve swords of total 25A in the intersection crest line portion formation of curvature portion 21B that constitutes top and bottom 21,21 and short side 23,23 mutual cross sections and long side surface 22 ... in a curve sword 25A), side-prominent from the end face 12A (12B) of cutter body 10 to above-mentioned axes O direction foreign side.

The curve sword 25A that is configured to this outstanding state becomes the waveform sword of side of the counterweight portion of machining crankshafts.

And, be connected in curvature portion 21B as the cutter direction of rotation T rear side of the curve sword 25A of waveform sword, along with square inclination towards cutter direction of rotation T rear side and in above-mentioned axes O direction is oblique, simultaneously, along with towards cutter direction of rotation T rear side and oblique towards above-mentioned outer radial periphery inclination, this curvature portion 21B that forms as the flank of the curve sword 25A of waveform sword forms the crack, back.

Therefore,, tilt towards cutter direction of rotation T front side along with square side in above-mentioned axes O direction, thereby be set to negative (for example-6 °) by making this curve sword 25A as the axial rake A (axial anterior angle) of the curve sword 25A of waveform sword.In addition, as the radial rake R (anterior angle radially) of the curve sword 25A of waveform sword, by making this curve sword 25A along with tilting towards cutter direction of rotation T front side, thereby be set to negative (for example-17 °) towards above-mentioned outer radial periphery side.

The pin mirror cutter of this formation, be installed in the cutter installation portion of processing machine, make the axes O of cutter body 10 consistent with main shaft, bent axle across chuck is run through under the state of inside of cutter body 10, move by axis (axes O of the cutter body 10) direction of one side along bent axle, around the axes O rotation of cutter body 10, around the axis revolution of bent axle, this bent axle is processed into the regulation shape simultaneously on one side.

As described above, in the pin mirror cutter of embodiments of the present invention 1, at first, as being installed in the first blade mount pad 13 that is formed at cutter body 10 ... and the second blade mount pad 14 ... on blade, because use the blade of same kind, so can will on a blade, be formed at the curve sword 25A that adds up to eight positions ..., be provided in cutting as pin sword or waveform sword respectively, thereby can take by control tool.

And, because the blade body 20 of such blade, form the approximate trapezoid tabular that possesses as above-mentioned a pair of long side surface 22,22 and a pair of short side 23,23, so about being installed on the blade of the first blade mount pad 13, the axial rake A as the curve sword 25A of pin sword just can be set at.And, the short side 23,23 of blade body 20 constitutes by a near flat face separately, thereby, about curve sword 25A as the waveform sword on the blade of installing at the second blade mount pad 14, though it is negative that its radial rake R is set to, can obviously not become big to the negative angle side.

Therefore, according to the embodiment of the present invention 1, will just be set at as the axial rake A of the curve sword 25A of pin sword, can reduce cutting resistance effectively, with this, can continue to carry out the processing of high accuracy and stable bent axle.

And, in embodiments of the present invention 1, because the short side 23,23 on the blade body 20 constitutes by a near flat face separately, so even the length of lengthen blade body 20 can not guaranteed the length of cutting edge fully yet, and dwindle the space of occupying of the blade mount pad 13 that is formed at cutter body 10, can keep the intensity of very high this cutter body 10.

In addition, the simple shape because blade body 20 just forms the approximate trapezoid tabular, thus can make it easy to manufacture, and can seek the reduction of processing cost.

And, though in above-mentioned embodiments of the present invention 1, the example that the present invention is used in the pin mirror cutter of so-called built in type has been described, but be not limited thereto, also the present invention can be used in the pin mirror cutter of following so-called outer-installed type, on cutter body, on the outer peripheral face of outer radial periphery side, be formed with a plurality of first blade mount pads, be formed with a plurality of second blade mount pads in outer peripheral face side separately, be separately installed with blade at these the first blade mount pads and the second blade mount pad towards the both ends of the surface of axis direction.

(embodiment 2)

Following with reference to description of drawings embodiments of the present invention 2.

The pin mirror cutter of embodiments of the present invention 2 as Fig. 4 and shown in Figure 5, possesses: the adapter 2-10 that is installed on the approximate circle ring-type of processing machine; With by interior perimembranous that is inserted in this adapter 2-10 and the interior perimembranous that is installed in adapter 2-10, rotate around axes O and be the cutter body 2-50 of the approximate circle ring-type at center with the axes O.

And, on the interior perimembranous of cutter body 2-50, a plurality of throw away chips are installed, this throw away chip has: as the cutting edge of the pin sword of the outer peripheral face that is used for the pin portion (axial region) on the machining crankshafts or as the cutting edge of the waveform sword of the side that is used for the counterweight portion on the machining crankshafts, but omit in drawing.

As Figure 6 and Figure 7, outer peripheral face 2-51 at cutter body 2-50, the rear side of the cutter direction of insertion A (rear side of the direction when cutter body 2-50 is inserted the interior perimembranous of adapter 2-10, upper side among Fig. 6 and Fig. 7) the full circumferential portion on the zone is outstanding towards the outer radial periphery side (the right-hand side of Fig. 6 and Fig. 7) of cutter body 2-50.

Therefore, be formed with on cutter body 2-50, the flange part 2-52 from the side-prominent approximate ring-type of the complete circumferentially outer radial periphery of its outer peripheral face 2-51 is formed with on this flange part 2-52, towards the restriction face 2-53 of the approximate ring-type of the front side of cutter direction of insertion A.

And, as shown in Figure 7, at the outer peripheral face 2-51 of cutter body 2-50, a plurality of positions on the zone of the rear side of cutter direction of insertion A, more side-prominent than flange part 2-52 towards the outer radial periphery of cutter body 2-50.

Thus, be formed with from approximate rectangular-shaped a plurality of (for example more than four) the jut 2-54 of the partly outstanding formation of its outer peripheral face at cutter body 2-50 ... its week at cutter body 2-50 is upwards disposed to omit uniformly-spaced, at a plurality of jut 2-54 ... as shown in Figure 8, be formed with respectively towards the front side of cutter direction of rotation T and a pair of wall 2-55, the 2-55 of rear side (circumferentially).

At this, as shown in Figure 8, among a pair of wall 2-55, the 2-55 on the jut 2-54, be positioned at the rear side of cutter direction of rotation T and towards the wall 2-55 of the rear side of cutter direction of rotation T, along cutter direction of insertion A (the axes O direction of cutter body 2-50, the thickness direction of cutter body 2-50) extends, to this, be positioned at the front side of cutter direction of rotation T and towards the wall 2-55 of cutter direction of rotation T front side, along with tilting towards the rear side of cutter direction of rotation T towards the front side (lower side of Fig. 8) of cutter direction of insertion A.

On the other hand, as Figure 6 and Figure 7, at the inner peripheral surface 2-11 of adapter 2-10, the full circumferential portion on the zone of the rear side of cutter direction of insertion A is towards the outer radial periphery side depression of cutter body 2-50.

Therefore, on adapter 2-10, be formed with opening from the complete circumferentially outer radial periphery side depression of inner circumferential surface 2-11 and towards a side's of the rear side of the cutter direction of insertion A of adapter 2-10 end face 2-16, and be formed with the end difference 2-12 of the approximate ring-type that is used to bear above-mentioned flange part 2-52, on this end difference 2-12, be formed with restriction face 2-13 towards the approximate ring-type of the rear side of cutter direction of insertion A.

And as shown in Figure 7, at the inner peripheral surface 2-11 of adapter 2-10, more cave in towards the outer radial periphery side of cutter body 2-50 than end difference 2-12 in a plurality of positions on the zone of the rear side of cutter direction of insertion A.

Thus, be used for chimeric above-mentioned a plurality of jut 2-54 being formed with a plurality of (for example more than four) on the adapter 2-10 ... notch 2-14 ... described notch 2-14 ... form from the inner peripheral surface of adapter 2-10 and part depression approximate rectangular-shaped, and circumferentially disposing at adapter 2-10 to omit uniformly-spaced, at a plurality of notch 2-14 ... go up separately, as shown in Figure 8, be formed with towards the front side of cutter direction of rotation T and a pair of wall 2-15, the 2-15 of rear side (circumferentially).

At this, as shown in Figure 8, among a pair of wall 2-15, the 2-15 on the notch 2-14, be positioned at the rear side of cutter direction of rotation T and towards the wall 2-15 of the front side of cutter direction of rotation T, along the cutter direction of insertion A (thickness direction of cutter body 2-50, the axes O direction of cutter body 2-50) extends, to this, be positioned at the front side of cutter direction of rotation T and towards the wall 2-15 of cutter direction of rotation T rear side, along with tilting towards the rear side of cutter direction of rotation T towards the front side (lower side of Fig. 8) of cutter direction of insertion A.

If cutter body 2-50 is inserted the interior perimembranous of adapter 2-10 along the axes O direction towards the front side of cutter direction of insertion A, then the flange part 2-52 of cutter body 2-50 is born by the end difference 2-12 of adapter 2-10, and makes a plurality of jut 2-54 of cutter body 2-50 ... be embedded in a plurality of notch 2-14 of adapter 2-10 respectively ...

Flange part 2-52 by cutter body 2-50 is born by the end difference 2-12 of adapter 2-10, the restriction face 2-53 of flange part 2-52 contacts with the radially overlapped mode face at cutter body 2-50 with the restriction face 2-13 of end difference 2-12, forms along the contact-making surface of the approximate ring-type of radially extending of cutter body 2-50.

Thus, contact by the restriction face 2-53 of flange part 2-52 and the restriction face 2-13 face of end difference 2-12, cutter body 2-50 is positioned on the axes O direction with respect to adapter 2-10.

At this, in embodiments of the present invention 2, as Figure 6 and Figure 7, contact and the contact-making surface of the approximate ring-type that forms about the mutual face of restriction face 2-13 of the restriction face 2-53 of flange part 2-52 and end difference 2-12, along the length d radially of this cutter body 2-50, be the width of contact-making surface, with respect to the thickness D of cutter body 2-50 (along the length of the axes O direction of cutter body 2-50), be set at the scope of 0.1D～1.0D.

By making a plurality of jut 2-54 of cutter body 2-50 ... be embedded in a plurality of notch 2-14 of adapter 2-10 respectively ..., each jut 2-54 ... a pair of wall 2-55,2-55 and each notch 2-14 ... the respectively mutual face contact of a pair of wall 2-15,2-15.

So, contact by a pair of wall 2-55, the 2-55 of each jut 2-54 and a pair of wall 2-15, the 2-15 difference face of each notch 2-14, cutter body 2-50 circumferentially is being fixed with respect to adapter 2-10, and makes the axes O of cutter body 2-50 roughly consistent with the axis of adapter 2-10.

As mentioned above, cutter body 2-50 is inserted into the interior perimembranous of adapter 2-10, cutter body 2-50 is positioned in the axes O direction with respect to adapter 2-10, and cutter body 2-50 circumferentially is being fixed with respect to adapter 2-10, and under the roughly consistent state of axes O that makes cutter body 2-50 and the axis of adapter 2-10, by with a plurality of (for example more than four) pressing plate 2-30 ... push the end face 2-56 on the cutter body 2-50, and cutter body 2-50 is installed on securely the interior perimembranous of adapter 2-10 towards a side of the rear side of cutter direction of insertion A.

Pressing plate 2-30, the approximate circle that forms the cut notch 2-31 that is in line shape and forms of the part with peripheral part is tabular, be inserted at cutter body 2-50 under the state of interior perimembranous of adapter 2-10, mode with the part on the above-mentioned end face 2-56 that has also hidden cutter body 2-50, in the countersink region 2-32 of the sub-circular of the above-mentioned end face 2-16 that is formed at adapter 2-10, tighten fixing by bolt 2-33.

This pressing plate 2-30, inserted at cutter body 2-50 under the state of interior perimembranous of adapter 2-10, a plurality of jut 2-54 in circumferential adjacency ... (at a plurality of notch 2-14 of circumferential adjacency ...) each other, upwards uniformly-spaced dispose each pressing plate 2-30 of one respectively to omit in week.

Pressing plate 2-30, by unclamping bolt 2-33, in countersink region 2-32, be that rotate freely at the center with bolt 2-33, by pressing plate 2-30 is rotated so that notch 2-31 is positioned at the inside all sides in the footpath of cutter body 2-50, cutter body 2-50 can be inserted the interior perimembranous of adapter 2-10, perhaps cutter body 2-50 be taken out from the interior perimembranous of adapter 2-10.On the contrary, pressing plate 2-30 is rotated so that notch 2-31 is not positioned at the inside all sides in the footpath of cutter body 2-50, afterwards, by the 2-33 that tights a bolt, can will insert the cutter body 2-50 of the interior perimembranous of adapter 2-10, be installed on the interior perimembranous of this adapter 2-10 securely.

In addition, by pressing plate 2-30 ... push the side's of cutter body 2-50 end face 2-56 (bottom surface of the countersink region of correctly saying so 2-32), under the state of the interior perimembranous that cutter body 2-50 is installed on securely adapter 2-10, on each pressing plate 2-30 be positioned at cutter body 2-50 radially the part of all sides be configured to: than the inside all sides in footpath from the outstanding more close cutter body 2-50 of flange part 2-52 that forms of outer peripheral face 2-51 of cutter body 2-50.

Form the pin mirror cutter of this structure, the bent axle that is across chuck is run through under the state of inside of cutter body 2-50, move by axis (axes O of the cutter body 2-50) direction of one side along bent axle, one side is around the axes O rotation of cutter body 2-50, and, this bent axle is processed into the regulation shape around the axis revolution of bent axle.

Pin mirror cutter according to embodiments of the present invention as described above 2, cutter body 2-50 is being installed under the state of adapter 2-10, contact with radially overlapped mode face by the flange part 2-52 of cutter body 2-50 and the end difference 2-12 of adapter 2-10 at cutter body 2-50, cutter body 2-50 is positioned on the axes O direction with respect to adapter 2-10, thus, even owing to change cutter body 2-50 when heat in metal cutting and adapter 2-10 thermal expansion, the cutter body 2-50 of this new replacing also can produce on the axes O direction with respect to adapter 2-10 hardly and depart from.

And, contact and the contact-making surface of the approximate ring-type that forms about the end difference 2-12 face of the flange part 2-52 of cutter body 2-50 and adapter 2-10, because the length d that will make progress in the footpath of this cutter body 2-50 is set in below the 1.0D, even therefore on thrust direction, apply big load, flange part 2-52 or end difference 2-12 also are difficult to bending, also can control the phenomenon that the cutter body 2-50 that causes owing to the load in thrust direction departs from the axes O direction with respect to adapter 2-10.In addition, about the contact-making surface of this approximate ring-type,, therefore, do not have the situation of the location that cutter body 2-50 can not be definite with respect to adapter 2-10 because the length d that will make progress in the footpath of this cutter body 2-50 is set in more than the 0.1D.

And the length d that makes progress about the footpath at cutter body 2-50 of the contact-making surface of above-mentioned approximate ring-type is preferably: the scope that is set at 0.2D～0.4D.

Therefore, in embodiments of the present invention 2, even owing to heat in metal cutting or in the reason of load of thrust direction etc., cutter body 2-50 can not be created in departing from the axes O direction with respect to adapter 2-10 yet, can continue to keep the wobble accuracy of a plurality of cutting edges that the very high interior perimembranous at cutter body 2-50 is provided with, and then, can improve crank processing precision.

In addition, in embodiments of the present invention 2, by making a plurality of jut 2-54 that are formed at cutter body 2-50 respectively ... be embedded in a plurality of notch 2-14 that on adapter 2-10, form respectively ... owing to cutter body 2-50 circumferentially can fixed with respect to adapter 2-10, make the axes O of cutter body 2-50 roughly consistent simultaneously with the axis of adapter 2-10, so by simple structure, that just can carry out this adapter 2-10 easily reaches contraposition in circumferential fixing.

At this, the shape about the chimeric notch 2-14 of jut 2-54 or jut 2-54 is not limited to shape as shown in Figure 8, for example, and can also be for as Fig. 9 and shape shown in Figure 10.

In first variation shown in Figure 9, among a pair of wall 2-55, the 2-55 on the jut 2-54, be positioned at the rear side of cutter direction of rotation T and towards the wall 2-55 of the rear side of cutter direction of rotation T, along with tilting towards the front side of cutter direction of rotation T towards the front side of cutter direction of insertion A, be positioned at the front side of cutter direction of rotation T and towards the wall 2-55 of the front side of cutter direction of rotation T, along with tilting towards the rear side of cutter direction of rotation T towards the front side of cutter direction of insertion A.Correspondence therewith, among a pair of wall 2-15, the 2-15 on the notch 2-14, be positioned at the rear side of cutter direction of rotation T and towards the wall 2-15 of the front side of cutter direction of rotation T, along with tilting towards the front side of cutter direction of rotation T towards the front side of cutter direction of insertion A, be positioned at the front side of cutter direction of rotation T and towards the wall 2-15 of the rear side of cutter direction of rotation T, along with tilting towards the rear side of cutter direction of rotation T towards the front side of cutter direction of insertion A.

And, in second variation shown in Figure 10, a pair of wall 2-55 on jut 2-54, two sides of 2-55 extend along cutter direction of insertion A, correspondence therewith, two sides of a pair of wall 2-15,2-15 on notch 2-14 also extend along cutter direction of insertion A.

And, though in the embodiment 2 of the invention described above, illustrated and be used in the present invention at the interior perimembranous mounting cutter body of adapter, the example of the pin mirror cutter of so-called built in type, but be not limited thereto, also the present invention can be used at the peripheral part mounting cutter body of adapter, the pin mirror cutter of so-called outer-installed type.

At this moment, on cutter body 2-50, be formed with, flange part from side-prominent approximate ring-type of the inside week of complete circumferentially footpath of inner circumferential surface, with equally from the inner peripheral surface radius vector inwardly week side-prominent a plurality of juts, on adapter 2-10, be formed with, from the inside all side depressions in the complete circumferentially footpath of its outer peripheral face and bear the end difference of the approximate ring-type of above-mentioned flange part, be formed with equally a plurality of notch from the inside all side depressions of outer peripheral face radius vector.

(embodiment 3)

Below, with reference to description of drawings embodiments of the present invention 3.

The pin mirror cutter of embodiments of the present invention 3 as Figure 11 and shown in Figure 12, possesses: the adapter 3-10 that is installed on the approximate circle ring-type of processing machine; With by interior perimembranous that is inserted into this adapter 3-10 and the interior perimembranous that is installed in adapter 3-10, and that rotate around axes O is the cutter body 3-50 of the approximate circle ring-type at center with the axes O.

And, on the interior perimembranous of cutter body 3-50, a plurality of throw away chips are installed, this throw away chip has: as the cutting edge of the pin sword of the outer peripheral face that is used for the pin portion (axial region) on the machining crankshafts or as the cutting edge of the waveform sword of the side that is used for the counterweight portion on the machining crankshafts, but omit in drawing.

As Figure 14 and shown in Figure 15, outer peripheral face 3-51 at cutter body 3-50, the rear side of the cutter direction of insertion A (rear side of the direction when cutter body 3-50 is inserted the interior perimembranous of adapter 3-10, lower side among Figure 15) the full circumferential portion on the zone, side-prominent towards the outer radial periphery of cutter body 3-50.

Therefore, on cutter body 3-50, be formed with, from the flange part 3-52 of the side-prominent approximate ring-type of the complete circumferentially outer radial periphery of its outer peripheral face 3-51, this flange part 3-52 has, towards the wall 3-53 of the approximate ring-type of the front side (upper side among Figure 15) of cutter direction of insertion A.

And, as Figure 14 and shown in Figure 15, above-mentioned wall 3-53 on flange part 3-52 (the wall 3-53 relative with end difference 3-12 described later) is formed with a plurality of protuberance 3-54, this protuberance 3-54 towards the axes O direction of cutter body 3-50, be that the front side of cutter direction of insertion A is outstanding.

Thus, 3-52 is formed with at flange part, be similar to rectangular-shaped a plurality of (for example more than four) protuberance 3-54 from its wall 3-53 towards the partly outstanding formation of the front side of cutter direction of insertion A, its week at cutter body 3-50 is upwards disposed to omit uniformly-spaced, as shown in figure 15, a plurality of protuberance 3-54 have respectively towards the front side of cutter direction of rotation T and a pair of side 3-55, the 3-55 of rear side (circumferentially).

At this, as shown in figure 15, among a pair of side 3-55, the 3-55 on the protuberance 3-54, be positioned at the front side of cutter direction of rotation T and towards the side 3-55 of the front side of cutter direction of rotation T, along with tilting towards the rear side of cutter direction of rotation T towards the front side of cutter direction of insertion A, to this, be positioned at the rear side of cutter direction of rotation T and towards the side 3-55 of the rear side of cutter direction of rotation T, along with tilting towards the front side of cutter direction of rotation T towards the front side of cutter direction of insertion A.

That is, a pair of side 3-55,3-55 on the protuberance 3-54 are inclined to, make distance between it along with the projected direction (front side of cutter direction of insertion A) towards protuberance 3-54 diminishes gradually.

On the other hand, as Figure 16 and shown in Figure 17, at the inner peripheral surface 3-11 of adapter 3-10, the full circumferential portion on the zone of the rear side (upper side among Figure 17) of cutter direction of insertion A is towards the outer radial periphery side depression of cutter body 3-50.

Therefore, on adapter 3-10, be formed with opening from the complete circumferentially outer radial periphery side depression of inner circumferential surface 3-11 and towards a side's of the rear side of the cutter direction of insertion A of adapter 3-10 end face 3-17, and be formed with the end difference 3-12 of the approximate ring-type that is used to bear above-mentioned end difference 3-52, this end difference 3-12 has, towards the wall 3-13 of the approximate ring-type of the rear side (upper side among Figure 17) of cutter direction of insertion A.

And, as Figure 16 and shown in Figure 17, above-mentioned wall 3-13 on end difference 3-12 (the wall 3-13 relative with above-mentioned flange part 3-52) is formed with a plurality of recess 3-14, this recess 3-14 towards the axes O direction of cutter body 3-50, be the front side depression of cutter direction of insertion A.

Thus, be formed with the recess 3-14 that a plurality of (for example more than four) are used for chimeric above-mentioned a plurality of protuberance 3-54 on the end difference 3-12, described recess 3-14 forms from the wall 3-13 of end difference 3-12 towards the front side of cutter direction of insertion A and part depression approximate rectangular-shaped, and circumferentially disposing at adapter 3-10 to omit uniformly-spaced, as shown in figure 17, a plurality of recess 3-14 have respectively towards the front side of cutter direction of rotation T and a pair of side 3-15, the 3-15 of rear side (circumferentially).

At this, as shown in figure 15, among a pair of side 3-15, the 3-15 on the recess 3-14, be positioned at the front side of cutter direction of rotation T and towards the side 3-15 of the rear side of cutter direction of rotation T, along with tilting towards the rear side of cutter direction of rotation T towards the front side of cutter direction of insertion A, to this, be positioned at the rear side of cutter direction of rotation T and towards the wall 3-15 of the front side of cutter direction of rotation T, along with tilting towards the front side of cutter direction of rotation T towards the front side of cutter direction of insertion A.

That is, a pair of side 3-15,3-15 on the recess 3-14 are inclined to, make distance between it along with the depression direction (front side of cutter direction of insertion A) towards recess 3-14 diminishes gradually.

If cutter body 3-50 is inserted the interior perimembranous of adapter 3-10 along the axes O direction towards the front side of cutter direction of insertion A, then the flange part 3-52 by cutter body 3-50 is accepted by the end difference 3-12 of adapter 3-10, as Figure 12 and shown in Figure 13, make relative configuration of wall 3-13 of wall 3-53 and the end difference 3-12 of flange part 3-52, and make a plurality of protuberance 3-54 that are formed at flange part 3-52 be embedded in a plurality of recess 3-14 that are formed at end difference 3-12 respectively.

By making a plurality of protuberance 3-54 that are formed at flange part 3-52 be embedded in a plurality of recess 3-14 of end difference 3-12 respectively, thus make on a pair of side 3-55,3-55 and each recess 3-14 on each protuberance 3-54 a pair of side 3-15,3-15 respectively mutual face contact.

So, a pair of side 3-55,3-55 by making each protuberance 3-54 and a pair of side 3-15, the 3-15 of each recess 3-14 face respectively contact, thereby cutter body 3-50 is positioned on the axes O direction with respect to adapter 3-10, and cutter body 3-50 circumferentially is being fixed with respect to adapter 3-10, and, make the axes O of cutter body 3-50 roughly consistent with the axis of adapter 3-10.

As mentioned above, cutter body 3-50 is inserted into the interior perimembranous of adapter 3-10, cutter body 3-50 is positioned on the axes O direction with respect to adapter 3-10, and cutter body 3-50 circumferentially is being fixed with respect to adapter 3-10, and, under the roughly consistent state of axes O that makes cutter body 3-50 and the axis of adapter 3-10, by push the end face 3-57 towards a side of the rear side of the cutter direction of insertion A of cutter body 3-50 with a plurality of (for example more than four) pressing plate 3-30, cutter body 3-50 is installed on the interior perimembranous of adapter 3-10 securely.

And, in embodiments of the present invention 3, be installed at cutter body 3-50 under the state of interior perimembranous of adapter 3-10, as shown in figure 13, at the end face 3-56 of the protuberance 3-54 that is formed at flange part 3-52 be formed between the bottom surface 3-16 of recess 3-14 of end difference 3-12 and be formed with predetermined gap, and, between the wall 3-13 of the wall 3-53 of flange part 3-52 and end difference 3-12, also be formed with predetermined gap.

But, being formed at the end face 3-56 of protuberance 3-54 of flange part 3-52 and the bottom surface 3-16 that is formed at the recess 3-14 of end difference 3-12 and being close to also passablely mutually, the wall 3-53 of flange part 3-52 and the wall 3-13 of end difference 3-12 are close to also passable mutually.

Pressing plate 3-30, the approximate circle that forms the cut notch 3-31 that is in line shape and forms of the part with peripheral part is tabular, be inserted at cutter body 3-50 under the state of interior perimembranous of adapter 3-10, mode with the part on the above-mentioned end face 3-57 that has also hidden cutter body 3-50, in the countersink region 3-32 of the sub-circular of the above-mentioned end face 3-17 that is formed at adapter 3-10, tighten fixing by bolt 3-33.

Pressing plate 3-30, by unclamping bolt 3-33, in countersink region 3-32, be that rotate freely at the center with bolt 3-33, by pressing plate 3-30 is rotated so that notch 3-31 is positioned at the inside all sides in the footpath of cutter body 3-50, cutter body 3-50 can be inserted the interior perimembranous of adapter 3-10, perhaps cutter body 3-50 be taken out from the interior perimembranous of adapter 3-10.On the contrary, pressing plate 3-30 is rotated so that notch 3-31 is not positioned at the inside all sides in the footpath of cutter body 3-50, afterwards, by the 3-33 that tights a bolt, can will insert the cutter body 3-50 of the interior perimembranous of adapter 3-10, be installed on the interior perimembranous of this adapter 3-10 securely.

Form the pin mirror cutter of this structure, the bent axle that is across chuck is run through under the state of inside of cutter body 3-50, move by axis (axes O of the cutter body 3-10) direction of one side along bent axle, one side is around the axes O rotation of cutter body 3-10, and, this bent axle is processed into the regulation shape around the axis revolution of bent axle.

Pin mirror cutter according to embodiments of the present invention as described above 3, cutter body 3-50 is being installed under the state of adapter 3-10, the protuberance 3-54 that is formed at flange part 3-52 is embedded on the recess 3-14 that is formed at end difference 3-12, thereby cutter body 3-50 is positioned on the axes O direction with respect to adapter 3-10, cutter body 3-50 circumferentially is being fixed with respect to adapter 3-10, and, make the axes O of cutter body 3-50 roughly consistent with the axis of adapter 3-10.

At this, because protuberance 3-54 is formed, above-mentioned wall 3-53 from the flange part 3-52 of approximate ring-type is outstanding to the axes O direction, recess 3-52 is formed, above-mentioned wall 3-13 from the end difference 3-12 of approximate ring-type caves in to the axes O direction of cutter body, so be positioned at protuberance 3-54 gap or recess 3-14 each other, can be open in the both ends of the surface side of the both ends of the surface side of cutter body 3-50 or adapter 3-10, can keep the rigidity separately of very high cutter body 3-50 and adapter 3-10.

Promptly, by rib shape part (the flange part 3-52 of approximate ring-type) in the remaining approximate ring-type of outermost perimembranous of cutter body 3-50, and, thereby can keep the rigidity separately of very high cutter body 3-50 and adapter 3-10 in the ancon part (part beyond the end difference 3-12 of approximate ring-type) of the remaining approximate ring-type of interior perimembranous of adapter 3-10.

Therefore, owing to can keep the very high installation rigidity when cutter body 3-50 is installed on adapter 3-10, so can not produce cutter body 3-50 departing from respect to adapter 3-10, thereby the wobble accuracy of a plurality of cutting edges that the interior perimembranous that can continue to remain on this cutter body 3-50 well is provided with, and then, can improve crank processing precision.

In addition, because protuberance 3-54 is formed, make one to the distance between side 3-55,3-55 along with the projected direction towards protuberance 3-54 diminishes gradually, and, recess 3-14 is formed, make one to the distance between side 3-15,3-15 along with the depression direction towards recess 3-14 diminishes gradually, therefore, can easily cutter body 3-50 be inserted the interior perimembranous of adapter 3-10, and can make the axes O of cutter body 3-50 roughly consistent reliably with respect to the axis of adapter 3-10.

And, among a pair of side 3-55, the 3-55 on the protuberance 3-54, at least make a side side 3-55, also can along cutter direction of insertion A (the axes O direction of cutter body 3-50, the thickness direction of cutter body 3-50) extension, among a pair of side 3-15, the 3-15 on the recess 3-14, at least make a side side 3-15, extend along cutter direction of insertion A (the axes O direction of cutter body 3-50, the thickness direction of cutter body 3-50) and also can.

In above-mentioned embodiments of the present invention 3, though at the above-mentioned wall 3-53 that is formed on the flange part 3-52 of cutter body 3-50, be formed with a plurality of towards the outstanding protuberance 3-54 of the front side of cutter direction of insertion A, at the above-mentioned wall 3-13 that is formed on the end difference 3-12 of adapter 3-10, be formed with a plurality of recess 3-14 that cave in towards the front side of cutter direction of insertion A, but be not limited thereto, above-mentioned wall 3-53 that also can be on flange part 3-52, form a plurality of recesses that cave in towards the rear side of cutter direction of insertion A, above-mentioned wall 3-13 on end difference 3-12 forms a plurality of towards the outstanding protuberance of the rear side of cutter direction of insertion A.

In addition, though in above-mentioned embodiments of the present invention 3, illustrated that the present invention is used in interior perimembranous at adapter is equipped with cutter body, the example of the pin mirror cutter of so-called built in type, but be not limited thereto, also the present invention can be used at the peripheral part mounting cutter body of adapter, the pin mirror cutter of so-called outer-installed type.

Claims (4)

1. a pin mirror cutter possesses: the adapter that is installed on processing machine; With the cutter body of the approximate circle ring-type of rotating around axis by being installed on this adapter,

It is characterized in that,

Be formed with at described cutter body, the radially flange part of outstanding approximate ring-type from the complete circumferential described cutter body of its side face, be formed with at described adapter, from the radial depressions of the complete circumferential described cutter body of its side face and bear the end difference of the approximate ring-type of described flange part

Be installed at described cutter body under the state of described adapter, described flange part is contacted with the radially overlapped mode face at described cutter body with described end difference, and the length that makes progress of the footpath at described cutter body of this contact-making surface is set at the scope of 0.1D～1.0D with respect to the thickness D of described cutter body.

2. pin mirror cutter according to claim 1 is characterized in that:

Be formed with at described cutter body,, be formed with at described adapter from radially outstanding a plurality of juts of its side face to described cutter body, from a plurality of notch of its side face to the radial depressions of described cutter body,

Be installed at described cutter body under the state of described adapter, by making described a plurality of jut be embedded in described a plurality of notch respectively, thereby described cutter body upwards is fixed in week with respect to described adapter, and makes the axis of described cutter body roughly consistent with the axis of described adapter.

3. a pin mirror cutter possesses: the adapter that is installed on processing machine; With the cutter body of the approximate circle ring-type of rotating around axis by being installed on this adapter,

It is characterized in that,

Be formed with at described cutter body, the radially flange part of outstanding approximate ring-type from the complete circumferential described cutter body of its side face, be formed with at described adapter, from the radial depressions of the complete circumferential described cutter body of its side face and bear the end difference of the approximate ring-type of described flange part

Wall relative on the described flange part and the side among the wall relative on the described end difference with described flange part with described end difference, be formed with to the outstanding protuberance of the axis direction of described cutter body, be formed with to the axis direction depression of described cutter body and make the chimeric recess of described protuberance the opposing party.

4. pin mirror cutter according to claim 3 is characterized in that:

Described protuberance is formed, and the distance towards between circumferential a pair of side is diminished towards projected direction, and described recess is formed, and the distance towards between circumferential a pair of side is diminished towards the depression direction.

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