CN1933931A

CN1933931A - Clamping structure for throwaway chip

Info

Publication number: CN1933931A
Application number: CN 200580008788
Authority: CN
Inventors: 古木俊充
Original assignee: Mitsubishi Materials Corp
Current assignee: Mitsubishi Materials Corp
Priority date: 2004-03-26
Filing date: 2005-03-24
Publication date: 2007-03-21
Anticipated expiration: 2025-03-24
Also published as: CN100509225C

Abstract

To ensure chip strength by preventing a chip main body from being largely chipped by a mounting hole of the chip main body without making the shapes of a clamping member head part and the mounting hole complicated. [MEANS FOR SOLVING PROBLEMS] On the chip, a mounting hole (5) penetrating a chip main body (1) is formed. The chip is pressed with the clamping member (13) provided with a shaft part (13A) inserted into the mounting hole (5) and a head part (13B) having a diameter larger than that of the shaft part (13A), and the chip is clamped to a chip mount (12) by a chip clamping mechanism. In the clamping member (13), a cross section orthogonally intersecting a central shaft line (O) of a rear plane (13C) of the head part (13B) has a circular shape with the shaft line (O) at the center. In the chip main body (1), the head part (13B) of the clamping member (13) is permitted to pass through the mounting hole (5). An opening part of the mounting hole (5) is provided with an abutting part (5B) whereupon a part of the rear plane (13C) of the head part (13B) abuts when the clamp member (13) moves forward.

Description

The clamp mechanism of throw away chip

Technical field

The present invention relates to a kind of clamp mechanism of blade, to be installed in the blade mount pad that is formed at tool body freely by the clamping component mounting or dismounting at the throw away chip (following, be called for short blade) that blade body provides installing hole, and relate in particular to and a kind ofly need not take the clamp mechanism that this clamping component also can be installed and removed the blade of above-mentioned blade fully apart from tool body.

Background technology

As general the having of this clamp mechanism, internal diameter with respect to the installing hole that is formed on blade body, be made as the external diameter of the axial region of clamping component littler, and the external diameter of head that will be located at an end of this axial region is made as bigger, simultaneously, other end formation at axial region is screwed in the screw portion of the blade mount pad of tool body, after this blade mount pad is installed blade body, clamping component is inserted logical and is screwed in installing hole from screw portion, and by part or all of the peristome of above-mentioned head pushing installing hole, and the mechanism of clamping blade.But, use this clamp mechanism, when taking blade apart, have to clamping component is taken apart fully from tool body, not only make work numerous and diverse, and the possibility of losing the clamping component of taking apart is arranged.

So, at patent documentation 1～3 following mechanism has been proposed, the head of the clamping component that is arranged on tool body freely of will haunting forms, it or not the section circle, but be formed with petal shape from the outstanding protuberance of the external diameter of axial region, triangle, cross shape etc., and, the interior circumferential Zhou Fangxiang of the peristome of installing hole alternately form recess that this protuberance can pass through and with the protuberance of protuberance engagement.Use this clamp mechanism, when taking blade apart, make clamping component outstanding, simultaneously, after making protuberance and recess is consistent, rotating blade body or clamping component extract blade, and, during clip blade, consistent protuberance and recess and make head pass through installing hole, then, after rotating blade body or clamping component make protuberance and recess are consistent, introduce clamping component and clamp mechanism is advanced to blade mount pad side, clamp by protuberance pushing protuberance.

And, at patent documentation 4 following mechanism has been proposed, form in blade body, axial region with clamping component of screw portion can pass through, and the intransitable clamping of head with hole portion and, pass through to use hole portion in this clamping with what at least one side head of hole portion can pass through, and, axial region can be clamped with hole portion with by using between the portion of hole by these, when blade is installed, will not be screwed in the clamping component of blade mount pad and take apart fully and under the state that loosening, make its head by above-mentioned by blade body being configured on the blade mount pad with hole portion, then, by the sliding blade body contact is located at the wall of blade mount pad, simultaneously, make axial region by and be disposed at and clamp with after the portion of hole, by being screwed into clamping component, clamping by the head pushing and to clamp blade with the peristome of hole portion.

[patent documentation 1] Japanese Utility Model discloses clear 48-12675 communique

The public table of [patent documentation 2] Japan Patent 2002-512891 communique

[patent documentation 3] U.S. Patent Application Publication US2003/0165362 specification

[patent documentation 4] Japan Patent discloses flat 11-19808 communique

But, as patent documentation 1～3, use forms protuberance and forms the clamp mechanism of jog at the installing hole of blade body at the head of clamping component, the shape of the head of these clamping components or the installing hole of blade body can be complicated, and, if the protuberance of this installing hole when blade is installed or the recess when taking blade apart are inconsistent with the position of rotation of above-mentioned protuberance respectively, then can not install and remove blade.Therefore, only use the simple clamping components such as clamping screw that screw portion is set at the opposition side of the head of axial region, especially when blade is installed, advance to blade mount pad side on its full Zhou Xuanzhuan limit in the clamping component limit, then be difficult to consistent protuberance and protuberance and can't be suitable for, and the structure that during the mounting or dismounting blade clamping component is haunted also can be complicated, and the result can cause expensive.

On the other hand, with patent documentation 4 described clamp mechanism, installing hole in blade body, what be adjacent to big footpath that the head of clamping component can pass through passes through with hole portion, also to be formed with the clamping hole portion that the axial region that interconnects can pass through, in order to form this installing hole, the notch of blade body can become the intensity that reduces blade greatly, according to circumstances also can cause the breakage of blade body.And, with these patent documentation 4 described clamp mechanism, make the head of clamping component by blade body as above-mentioned by slip with hole portion, make contact at the wall of blade mount pad and locate, simultaneously, make axial region by and be disposed at and clamp with after the portion of hole, be screwed into clamping component and clamp blade, therefore, rightabout in the glide direction of this blade body, be the direction of opposition side of the wall of blade mount pad, blade body is only by based on the friction of the pushing force of clamping component head and hold mode, so, when cutting etc. to the additional big strength of this direction, the dislocation of blade then takes place easily.

Summary of the invention

The present invention forms in view of this background, it is a kind of that its purpose is to provide, the shape of the installing hole of uncomplicatedization clamping component head or blade body, and prevent that blade body from forming otch greatly by installing hole, thereby guarantee the clamp mechanism of the blade of blade strength, and, the structure that when operation in the time of can simplifying the mounting or dismounting blade or clip blade clamping component is advanced to blade mount pad side, and, when blade body contact is located at the wall of blade mount pad, also can keep the clamp mechanism of blade in the direction of the opposition side of this wall reliable and strongly.

In order to solve above-mentioned problem and to reach above-mentioned purpose, the present invention is, to be formed with the blade of the installing hole that connects blade body, insert the clamping component lead in the axial region of above-mentioned installing hole and the head bigger and advance towards the blade mount pad side of tool body by making to have to the central axial direction of above-mentioned axial region than this axial region external diameter, push by the head of above-mentioned clamping component and be clipped in the clamp mechanism of the blade of above-mentioned blade mount pad, it is characterized in that: in the above-mentioned clamping component, will with the above-mentioned central axis cross section orthogonal at the back side of above-mentioned head as being central circular with this axis, on the other hand, in the blade body of above-mentioned blade, make the head of above-mentioned clamping component can pass through in the above-mentioned installing hole, simultaneously, peristome at this installing hole is provided with abutting part, and this abutting part is connected to the part at the back side of above-mentioned head when above-mentioned clamping component has advanced.

During with this clamp mechanism clip blade, with the state that retreats a little from blade mount pad side when clamping clamping component is installed at tool body, with its head break-through in the installing hole of blade body and blade body is installed on the blade mount pad, then, make before the clamping component and then the part contact at its head back side is pushed at the abutting part of installing hole peristome.Thereby, will not take apart from tool body by clamping component during the mounting or dismounting blade, and, the head back side of clamping component forms as above-mentioned section is circular and gets final product, and the installing hole of blade body also gets final product for the section circle of the size that can make the irreducible minimum that this head passes through etc., therefore, can simplify the shape of the installing hole of the head of these clamping components or blade body, and can reduce the cost of clamp mechanism itself, especially can reduce to the minimum by the notch portion of the blade body of this installing hole, and can guarantee blade strength and prevent breakage etc., prolong the life-span of blade.Even, further prevent the breakage of blade body etc. reliably, be preferably in the above-mentioned blade body, above-mentioned abutting part is formed, regard the crescent shape of protruding to outer circumferential side as inner peripheral as along the direction of the center line of above-mentioned installing hole, and the notch that further dwindles blade body is good from this installing hole.

And, like this, for the head break-through of clamping clamping component makes clamping component advance to blade mount pad side at the blade of installing hole, the structure that also can adopt the position of rotation around the described axial region central axis that does not change clamping component of patent documentation for example 1～3 and this clamping component is haunted, but, the clamping component of above-mentioned clamp mechanism, the part contact at the head back side by being the section circle is at the above-mentioned abutting part of installing hole peristome, pushing blade body and clamping, no matter the position of rotation around the axis of clamping component, can clamp blade body, so, can use as this clamping component, be screwed into screw portion in above-mentioned tool body, full Zhou Xuanzhuan around above-mentioned central axis and the clamping component that advances towards above-mentioned blade mount pad side in the opposition side setting of the head of its axial region, promptly check the simple clamping screw of the back side shape of above-mentioned head.Thereby, by using this clamping component, the pushing force in the time of not only can fully guaranteeing to clamp, and, when further being reduced at the mounting or dismounting blade so that the structure of the clamp mechanism of advance and retreat clamping component and further reducing cost.

And, especially when blade body contact is positioned at the wall of blade mount pad, in the above-mentioned clamping component, center line to above-mentioned installing hole makes above-mentioned central axis tilt to be advisable, promptly the direction of sowing discord from the center line of installing hole by the blade mount pad side direction that this central axis clamping component when clamping is advanced tilts, blade body also is pressed to above-mentioned side surface side by the head back side of this clamping component, can prevent the situation to this wall opposition side dislocation.And, in the clamping component, be provided with than the big large-diameter portion of above-mentioned installing hole external diameter by opposition side at the above-mentioned head of above-mentioned axial region, clamping component is moved back from blade mount pad rear flank, then can blade body be floated from mount pad, thereby can be more prone to carry out its disassembling section by this large-diameter portion.

And, during as the central axis of above-mentioned center line inclination clamping component to installing hole, by above-mentioned abutting part is formed, be positioned at the part on the plane of center line of the central axis that comprises above-mentioned clamping component and above-mentioned installing hole, more protrude to this central axial direction than other parts, and the above-mentioned head back side of clamping component, along with this clamping component advances towards blade mount pad side to its central axial direction, 1 part on the above-mentioned plane of protruding most to the central axial direction of this abutting part, contact pushes blade body at this abutting part.Therefore, can not disperse by the pushing force of clamping component to pass on effectively and when clamping blade, especially clamping component is as during above-mentioned clamping screw, can prevents that its eccentric wear from decreasing.

And, during equally to the central axis of the center line inclination clamping component of installing hole, when form a plurality of installing holes in blade body with center line parallel to each other, simultaneously, when tool body has a plurality of clamping component of corresponding these installing holes, by seeing that at above-mentioned centerline direction the above-mentioned central axis with the inclination of these clamping components is adapted to parallel to each other, or extend with the direction that the angle of the crossing below 5 ° intersects, can contact at above-mentioned wall by the press direction of a plurality of clamping components of central axis inclination and with blade body to the certain orientation arrangement, and position, can improve the repeatability of the blade positional precision of blade.And, so have a plurality of installing holes and when tool body has a plurality of clamping component in blade body, by further possess the index that expression makes the order of these clamping components when blade mount pad side is advanced (during clamping screw for be screwed into) in blade body, can more reliably blade body be positioned to above-mentioned certain orientation guiding, and can promote the further raising of the repeatability of blade positional precision.

Description of drawings

Fig. 1 is the side view of the throw-away tipped grooving tool of the clamp mechanism of suitable the 1st embodiment of the present invention.

Fig. 2 is the plane of grooving tool shown in Figure 1.

Fig. 3 clamps the Z-Z line sectional drawing of Fig. 1 of the 1st embodiment of the present invention of the state of blade for expression.

Fig. 4 loosens the figure of the state of clamping component 13 from state shown in Figure 3 for expression.

Fig. 5 is the oblique view of the blade clamped by the 1st embodiment.

Fig. 6 is the side view of blade shown in Figure 5.

Fig. 7 is the plane of blade shown in Figure 5.

Fig. 8 is the side view of the blade clamped by the 2nd embodiment of the present invention.

Fig. 9 is the plane of blade shown in Figure 8.

Figure 10 is the plane of the throw-away tipped cutter of the clamp mechanism of suitable the 3rd embodiment of the present invention.

Figure 11 is the side view of cutter shown in Figure 10.

Figure 12 clamps the Z-Z line sectional drawing of Figure 10 of the 3rd embodiment of the present invention of the state of blade for expression.

Figure 13 is the oblique view of the throw-away tipped plain milling cutter of the clamp mechanism of suitable the 4th embodiment of the present invention.

Figure 14 is the disrumpent feelings side view of a part of state that loosens the clamping component 13 of plain milling cutter shown in Figure 13.

Figure 15 is the figure of the blade of clamping seen of 2A side from the side in the plain milling cutter shown in Figure 13.

Figure 16 is the side view of the blade clamped by the 5th embodiment of the present invention.

Figure 17 is the plane of blade shown in Figure 16.

Figure 18 is the front elevation of blade shown in Figure 16.

Figure 19 is the X-Y-Y-X line sectional drawing of Figure 16.

Figure 20 is the sectional drawing of the X-Y-Y-X line section of Figure 16 of the throw-away tipped cutter of the clamp mechanism of suitable 5 embodiments of the present invention.

Symbol description:

1 blade body

4 cutting edges

5 installing holes

The minor diameter part of 5A installing hole 5

The 5B abutting part

5C abutting part 5B is positioned at part on the plane P

11 tool bodies

12 blade mount pads

12A mount pad bottom surface

12B, 12C mount pad wall

The 12E screw

13 clamping components

The 13A axial region

The 13B head

The back side of 13C head 13B

The 13E large-diameter portion

The 13F external thread part

15 indexs

The center line of C installing hole 5

The central axis of O clamping component

P comprises the plane of center line C and central axis O

The specific embodiment

The 1st embodiment when Fig. 1 to Fig. 4 represents that clamp mechanism of the present invention is useful in the throw-away tipped cutter of fluting usefulness, Fig. 5 to Fig. 7 are represented the blade installed by the clamp mechanism of the 1st embodiment.The blade body 1 of this blade, hard material by superhard alloy etc. forms the slightly tabular of parallelogram, have parallelogram in the table a pair of

side

2A, 2B and, around it each a pair of

side face

3A, 3B of length of direction alternate configurations towards periphery, form through the intersection point between other diagonal of branch of two sides 2A, the 2B of these parallelogram shapes and to the center line C that the thickness direction (above-below direction of Fig. 7) of flat blade body 1 extends, become 180 ° of rotation symmetries.And, be formed with cutting edge 4 respectively in the intersection crest line portion of side face 3A, the 3B of a pair of acute angle end portions cross of above-mentioned

side

2A, 2B, can share 2 times cutting edge 4 with 1 blade body 1.

Thereby, side among these side faces 3A, the 3B (long side face 3A in the present embodiment) is the rake face of cutting edge 4, the opposing party (short side face 3B in the present embodiment) is a clearance face, and, at two

sides

2A, 2B, be formed with the distolateral part of the above-mentioned acute angle of cutting edge 4 along with becoming the inclined plane that the above-mentioned thickness direction to blade body 1 backs away towards the central portion of this

side

2A, 2B, provide clearance cutting edge 4 from this acute ends.And, side face 3A as the rake face of cutting edge 4 is, the part that is connected in cutting edge 4 be positioned at tabular surface on the same plane parallel with side face 3B with the part of oblique-angle intersection with above-mentioned thickness direction, simultaneously, between these parts, be formed with the recess 3C that this tabular surface is caved in a little.And the above-mentioned side face 3B as the clearance face of cutting edge 4 forms the slightly leg-of-mutton chevron of section except that the part of its cutting edge 4 sides.

On the other hand, the central portion of side 2A, the 2B of this blade body 1 becomes vertical with above-mentioned thickness direction smooth planar, wherein the central portion of the side 2B of blade body 1 inboard is outstanding one section, between the central portion of these

sides

2A, 2B, be formed with, connect the installing hole 5 of this blade body 1 to above-mentioned thickness direction.At this installing hole 5, outstanding one section the part that comprises side 2B side, it is the minor diameter part 5A of central circular that the summary central portion of the above-mentioned thickness direction of blade body 1 becomes with above-mentioned center line C, simultaneously, from this minor diameter part 5A at the peristome of center line C direction towards the installing hole 5 of the table side side 2A of blade body 1, along with becoming gradually greatly towards this side 2A side, and it is roughly the same to be orthogonal to the internal diameter and the minor diameter part 5A of this cornerwise direction along the internal diameter of the cornerwise direction between the acute ends that connects the parallelogram that this side 2A is.

And, the peristome of this installing hole 5 along the cornerwise section that connects between the above-mentioned acute ends, along with from above-mentioned minor diameter part 5A towards the side of blade body 1 2A, the 2B side, form bell shape as shown in Figures 3 and 4, this bell shape is summary 1/4 dome arcuation and increases after the above-mentioned internal diameter of this diagonal, increase this internal diameter with certain angled straight lines shape, and, to side 2A, 2B becomes the recess of depression, wherein section is the part of dome arcuation, see as shown in Figure 6 in above-mentioned center line C direction, from the interior week of the above-mentioned minor diameter part 5A of the inner peripheral that becomes installing hole 5 at above-mentioned diagonal, interior amplitude through increasing is maximum, and along with from this diagonal, around center line C, sowing discord towards being orthogonal to this cornerwise direction, above-mentioned width dwindles gradually, and becomes the crescent shape of protruding to outer circumferential side from the inner peripheral of this installing hole 5.Thereby, the peristome of this installing hole 5, as shown in Figure 6, see in center line C direction, opening edge to its side 2A, 2B is the elliptical shape that has along above-mentioned cornerwise major axis on the whole, and, be the abutting part 5B that a pair of part that crescent shape and section be the dome arcuation is respectively present embodiment when the center line C direction of side 2A side is seen in this peristome.And in the present embodiment, in the above-mentioned thickness direction central authorities of the blade body 1 of outstanding one section the part that comprises side 2B side, 5 pairs of planes that are orthogonal to above-mentioned center line C of this installing hole become symmetry.

So mounting or dismounting are equipped with the tool body 11 of the above-mentioned throw-away tipped cutter of blade freely, in the present embodiment prism-shaped that is square as shown in Figures 1 and 2, one section of the upper recess of the elder generation of the length direction of its side 11A distolateral (left side of Fig. 1 and Fig. 2) and become blade mount pad 12.At this, this blade mount pad 12 comprises: from cave in abreast one section mount pad bottom surface 12A of above-mentioned side 11A; From this bottom surface 12A vertically tower and be orthogonal to side 11A and tool body 11 first end face 11B and to the parallel mount pad wall 12B of 11C above the tool body 11 and; As Fig. 2 to shown in Figure 4 to mount pad bottom surface 12A tower with scissors junction ground and towards side 11A side gradually to the tip inclination tiltedly and as shown in Figure 1 to above-mentioned wall 12B also to the direction with scissors junction tilt and extension and reach above the mount pad wall 12C of 11C.

And, the angle of the crossing of looking from the side that the above-mentioned side 11A side of these mount pad walls 12B, 12C is seen, identical with above-mentioned side face 3A, the 3B of blade body 1 at the angle of the crossing of the acute ends formation of side 2A, 2B, and, the angle of the crossing that wall 12C forms bottom surface 12A, the inclined plane part of the side 2A side of the above-mentioned chevron section that is with side face 3B as the clearance face of blade body 1 is identical to the angle that the plane central portion of side 2B forms.Thereby, above-mentioned blade body 1 is installed on blade mount pad 12, make its side 2B regard to 1 contact that mount pad bottom surface 12A is close to above-mentioned outstanding one section part and makes side face 3A at mount pad wall 12B, make the above-mentioned inclined plane part of the side face 3B that intersects by this side face 3A and cutting edge 4 contact simultaneously and make the cutting edge 4 of opposition side of this cutting edge 4 side-prominent to the tip of tool body 11 at mount pad wall 12C.Thereby outstanding one section tabular surface of side 2B central authorities becomes the installed surface to mount pad bottom surface 12A.And, in the corner portion that above-mentioned mount pad wall 12B, 12C intersect, be used to avoid the 12D of clearance portion of the interference of cutting edge 4, form the state that extends along the wall 12C that wall 12B is tilted in present embodiment such as Fig. 1.

And, as shown in Figures 3 and 4, be equipped with at this tool body 11, have and insert the clamping component 13 lead in the axial region 13A of the above-mentioned installing hole 5 of blade body 1 and the head 13B bigger than this axial region 13A external diameter, this clamping component 13 can be advanced and retreat to the central axis O of axial region 13A direction, by this clamping component 13 is advanced to blade mount pad 12 sides in the axes O direction, the back side 13C of above-mentioned head 12B contacts at the above-mentioned abutting part 5B of the peristome of installing hole 5 and clamps blade body 1.And the back side 13C of the head 1B of this clamping component 13 forms, and the section that is orthogonal to its axes O is rounded, and the head 13B of this clamping component 13 can be by the installing hole 5 of blade body 1.

At this, it is the cylindric of center that the axial region 13A of above-mentioned clamping component 13 forms with the axes O, simultaneously, head 13B becomes one and becomes with axes O with this axial region 13A in one distolateral (the lower-left side of Fig. 3 and Fig. 4) of clamping component 13 is the flat discus shape of this axes O direction of middle mind-set, and its above-mentioned back side 13C forms another distolateral (the axial region 13A side to clamping component 13.The upper right side of Fig. 3 and Fig. 4) conical surface-shaped of external diameter undergauge, and as above-mentioned rounded with the axes O cross section orthogonal.Thereby, the above-mentioned installing hole 5 of blade body 1, the internal diameter of its minor diameter part 5A is less than the external diameter of the discoid head 13B of this clamping component 13.And in present embodiment, the back side 13C of conical surface-shaped is more than 45 ° to the angle that axes O forms.And, the distolateral surface of head 13B, its circumference is semicircle shape at the section along axes O, simultaneously, central portion becomes the tabular surface perpendicular to axes O, be formed with at this central portion, the work of engagement spanner etc. with instrument so that the engaging hole 13D that clamping component 13 is rotated around axes O.

And, at the opposition side of the head 13B of this clamping component 13 axial region 13A, be that distolateral to have with the axes O be the columned large-diameter portion 13E at center for another of clamping component 13, the external diameter of this large-diameter portion 13E compare the above-mentioned installing hole 5 of blade body 1 internal diameter, be that the internal diameter of above-mentioned minor diameter part 5A is big, and 13A becomes one with axial region, thereby, the external diameter of this large-diameter portion 13E is bigger than axial region 13A or head 13B, is maximum diameter in clamping component 13.And the periphery of this large-diameter portion 13E is formed with external thread part 13F, simultaneously, be formed with in the other end of large-diameter portion 13E, the work of engagement spanner etc. with instrument so that the engaging hole 13D that clamping component 13 is rotated around axes O.

And, be formed with at tool body 11, as the peristome of the side 2B side of the installing hole 5 of the above-mentioned blade body 1 that regards to installation and opening and penetrate into the screw 12E of side 11D of opposition side of the side 11A of tool body 11 from the mount pad bottom surface 12A of blade mount pad 12, clamping component 13 is screwed into this screw 12E by the above-mentioned external thread part 13F with its large-diameter portion 13E periphery, makes axial region 13A and head 13B outstanding and be installed in tool body 11 from mount pad bottom surface 12A.Thereby, head 13B is protruded under the state of above-mentioned mount pad bottom surface 12A, by with instrument external thread part 13F being screwed into screw 12E at arbitrary above-mentioned engaging hole 13D joggleword, as shown in Figure 3, clamping component 13 advances to blade mount pad 12 sides large-diameter portion 13E is more sunk to than mount pad bottom surface 12A, and opposite, by loosening external thread part 13F, clamping component 13 blade mount pads 12 retreat and make large-diameter portion 13E outstanding from mount pad bottom surface 12A.

And, as shown in Figures 3 and 4, the mount pad bottom surface 12A of this screw 12E blade mount pad 12 tilts, therefore, be screwed into external thread part 13F and the above-mentioned central axis O of the clamping component 13 installed also tilts to mount pad bottom surface 12A at this screw 12E, simultaneously, also the above-mentioned center line C of the blade body 1 that is installed on blade mount pad 12 is tilted.Then, when the side of the mount pad bottom surface 12A that regards to blade mount pad 12 is seen, this axes O from the direction of direction of advance (the being screwed into direction) inclination of the clamping component 13 of mount pad bottom surface 12A when clamping is, along the section shown in Fig. 1 symbols Z Z towards these mount pad walls 12B, the direction of the intersection point that 12C intersects, promptly be installed on the above-mentioned diagonal of the parallelogram that the side 2A of the blade body 1 of this blade mount pad 12 is, and, the long axis direction of the above-mentioned opening edge of the installing hole 5 of oval in shape when this side 2A side is seen, or be maximum direction at the width that center line C direction is seen the above-mentioned abutting part 5B that is crescent shape, be used in the direction of opposition side of the cutting edge 4 of cutting.And, the central axis O of the clamping component 13 of inclination like this, to the vertical direction of mount pad bottom surface 12A, promptly be installed on the inclined angle alpha that the above-mentioned center line C direction of the blade body 1 of blade mount pad 12 forms, be 5 °～40 ° scope in the present embodiment.

The clamp mechanism that constitutes like this, will not extract fully from tool body 11 by clamping component 13, with as above-mentioned external thread part 13F loosened and makes axial region 13A and head 13B from the outstanding a little state of mount pad bottom surface 12A from screw 12E, head 13B is installed in blade body 1 on the blade mount pad 12 by above-mentioned installing hole 5, and by external thread part 13F is screwed into screw 12E, and the head 13B of clamping component 13 is advanced down to blade mount pad 12 sides.So, as shown in Figure 3, the back side 13C of this head 13B that section is rounded, in a pair of above-mentioned abutting part 5B of installing hole 5, contact the tip that protrudes in tool body 11 and be used in the cutting edge 4 of cutting opposition side (side that center line C axes O is tilted) abutting part 5B and blade body 1 is pressed to the 12A thruster of mount pad bottom surface, thus, clamp blade body 1 at blade mount pad 12.And, when taking blade apart, in contrast, by clamping component 13 is cooled it axial region 13A and head 13B are retreated from blade mount pad 12, when releasing is made head 13B pass through installing hole 5 by the pushing of the contact of back side 13C, thus, do not extract clamping component 13 from tool body 11 and can take blade apart yet as Fig. 4.

Thereby, according to the clamp mechanism of said structure, when installing and removing blade, needn't take clamping component 13 apart from tool body 11 as above-mentioned, so mounting or dismounting work becomes easily, and, can not lose the clamping component of taking apart 13.And, the head 13B of this clamping component 13 of pushing blade body 1, the rounded discus shape of the section of its back side 13C gets final product, and, the installing hole 5 of blade body 1 is as long as have the rounded minor diameter part 5A of section that this head 13B can pass through, therefore, the shape of these clamping components 13 or blade body 1 can be simplified, the cost of this clamp mechanism can be reduced.And, installing hole 5, has circular minor diameter part 5A, and be formed with abutting part 5B at its peristome, so, can dwindle the notch portion of blade body 1 by this installing hole 5, thus, the breakage that can guarantee the intensity of blade body 1 and prevent to be caused by the load in when cutting etc. can prolong blade life and promotes slick and sly cutwork.

And, when forming abutting part 5B as above-mentioned peristome at installing hole 5, direction along the center line C of installing hole 5 is seen, this abutting part 5B of present embodiment is crescent shape, this crescent shape is protruded to outer circumferential side from the inner-diameter portion whose as the minor diameter part 5A of the inner peripheral of this installing hole 5, and, form the recess of 2A depression from the side.Thereby, in the present embodiment, at the peristome that makes discoid head 13B by the installing hole 5 of minor diameter part 5A with the rounded back side 13C of section, the abutting part 5B of this back side 13C will be contacted with, the size that forms the back side 13C that is contacted with this abutting part 5B gets final product, so, can further dwindle the notch portion of the blade body 1 that forms by the installing hole 5 that comprises this abutting part 5B, thus, can prevent the breakage etc. of blade body 1 more reliably.

Even, this abutting part 5B in the present embodiment, section along the center line C of the installing hole 5 of blade body 1 forms, depression is for being the bell shape of 1/4 dome arcuation, but, also can form, for example with the slightly identical certain inclination of inclination of the back side 13C of the head 13B of the clamping component 13 that is contacted with this abutting part 5B, along with inside all sides towards the shape of immersing oneself in as the recessed conical surface-shaped of the side 2B side of the installed surface of the mount pad bottom surface 12A of blade mount pad 12.And the crescent shape that this abutting part 5B is in above-mentioned center line C direction beyond the present embodiment oval in shape, also can form the oblong shape that the internal diameter with minor diameter part 5A moves under original state.And, the clamping component 13 that will have discoid head 13B as present embodiment, be mounted to its central axis O when the center line C of installing hole 5 is tilted, see that in center line C direction this head 13B is the flat elliptical shape that the direction (the long axis of ellipse direction that abutting part 5B is in the present embodiment) that tilts at central axis O has minor axis, so, the minor diameter part 5A of the installing hole 5 that this head 13B passes through equally also can be formed, see in center line C direction, the elliptical shape that has minor axis in the direction of central axis O inclination, thereby, can further dwindle the notch portion of the blade body 1 that forms by installing hole 5, guarantee further that by blade strength can improve breakage prevents effect.

And, the back side 13C of the head 13B of this abutting part 5B and clamping component 13, contact is also passable in the full week of each abutting part 5B, and, for example only also passable in the 1 part contact of Zhou Kuandu the best part (part on the major axis of the abutting part 5B of oval in shape) in the minor diameter part 5A of the abutting part 5B of crescent shape, and, clip the wideest part of this width, also can in 2 part contacts of the Zhou Fangxiang both sides of installing hole 5.Wherein, when the wideest 2 parts of part in the Zhou Fangxiang both sides of width that so clip abutting part 5B make the back side 13C of head 13B be contacted with abutting part 5B, at section (ZZ section), have between the back side 13C of part that abutting part 5B is the wideest and head 13B a bit at interval as shown in Figure 3 along above-mentioned long axis of ellipse direction.

On the other hand, in the clamp mechanism of said structure, as the structure that clamping component 13 blade mount pads 12 are retreated, for example also can be suitable for the structure that this clamping component is haunted as the position of rotation around the central axis of the axial region that do not change clamping component as described in the patent documentation 1～3, but, by as the rounded back side 13C contact of the section of the head 13B of above-mentioned clamping component 13 at abutting part 5B, no matter the position of rotation around the central axis O of clamping component 13 can be clamped blade body 1, so, can use clamping component 13 structure of going forward side by side and moving back of the full Zhou Xuanzhuan around the axle line O therein, promptly as stubborn the connect structure that make clamping component 13 advance and retreat of present embodiment by external thread part 13F and screw 12E.Therefore, do not change the position of rotation of clamping component with patent documentation 1～3 and the structure of haunting is compared, structure is simpler and can clamp blade body 1 with sufficient pushing force, and can seek the further reduction and the slick and sly cutwork of cost.

And, in the present embodiment, the center line C of the installing hole 5 of the central axis O blade body 1 of this clamping component 13 tilts, thereby, by make this clamping component 13 the axes O direction before blade mount pad 12 sides and then with the back side 13C of above-mentioned head 13B contact when abutting part 5B pushes blade body 1, this blade body 1 is urged into, in the mount pad bottom surface 12A side of above-mentioned center line C direction towards this blade mount pad 12, the direction of sowing discord from center line C to mount pad 12 sides towards, axes O simultaneously in the direction that is orthogonal to above-mentioned center line C.Thereby, as present embodiment, form wall 12B, the 12C of blade mount pad 12 in this direction side, then can clamp blade body 1 by these

mount pad walls

12B, 12C and above-mentioned mount pad bottom surface 12A more strongly, for example as patent documentation 4 described clamp mechanism, the situation of blade body 1 to the opposition side dislocation of this

wall

12B, 12C such as can prevent when cutting.

But, the formed inclined angle alpha of center line C of the installing hole 5 of the central axis O blade body 1 of the clamping component 13 of inclination like this, if this angle is too little, pushing blade body 1 diminishes and can not fully obtain above-mentioned effect to the pushing force of

wall

12B, 12C side, on the other hand, if this inclined angle alpha is too big, opposite, pushing blade body 1 diminishes and has the possibility of the installation stability of damaging blade to the pushing force of mount pad bottom surface 12A side.Therefore, the inclined angle alpha that forms during inclination central axis O, to center line C, the scope that is set in 5 °～40 ° as present embodiment is good.And, when installing as above-mentioned inclination clamping component 13, at peristome as the installing hole 5 of the side 2B side of the installed surface of blade mount pad 12, the clearance portion of interference that is used to the axial region 13A of the clamping component 13 avoiding tilting, for example as forming installing hole 5 etc. in the present embodiment table symmetrically, form ellipse that the direction that tilts to this clamping component 13 extends etc. and be shaped as good.

And, in the clamp mechanism of present embodiment, opposition side (another is distolateral) at one of the axial region 13A of clamping component 13 distolateral head 13B, form large-diameter portion 13E, the external diameter of this large-diameter portion 13E is than the external diameter of these axial regions 13A or head 13B is big and also the installing hole 5 than blade body 1 is big, is formed with external thread part 13F in the periphery of this large-diameter portion 13E.Thereby, when taking the blade that is installed on tool body 11 apart, loosen external thread part 13F and blade mount pad 12 retreats clamping component 13 from screw 12E, then outstanding and will push to from mount pad bottom surface 12A as the side 2B central portion of the installed surface of blade body 1 as this large-diameter portion of Fig. 4 13E, and blade body 1 is floated from mount pad 12.Therefore, push blade body 1 by inclination central axis O to wall 12B, 12C as above-mentioned, even blade body 1 is installed in blade mount pad 12 strongly, can take blade body 1 simply apart by the back operation of this clamping component 13 during exchange of blade etc., in addition, needn't extract this clamping component 13 from tool body 11, therefore, can provide the clamp mechanism of the higher blade of operability.But in present embodiment, external thread part 13F is formed on the large-diameter portion 13E of clamping component 13, the external diameter of this large-diameter portion 13E is bigger than installing hole 5, promptly big than axial region 13A, if just clamp blade body 1, the external diameter of external thread part 13F is same or little also more passable than axial region 13A with axial region 13A, it is also passable promptly not form large-diameter portion 13E at clamping component 13, and, if large-diameter portion 13E will be set, blade body 1 can be pushed to as long as this large-diameter portion 13E is contacted with in side 2B or the installing hole 5 when loosening external thread part 13F, the external diameter of large-diameter portion 13E is little also more passable than installing hole 5.

Even, in the present embodiment, illustrated as the blade of so clamping, in the relevant intersection crest line portion that is between 4 side face 3A, the 3B that omit the flat blade body 1 of parallelogram, be formed with the blade of cutting edge 4 in the intersection crest line portion of the acute ends of the side of

parallelogram shape

2A, 2B, but clamp mechanism of the present invention can also be suitable for the blade beyond the above-mentioned blade.For example, Fig. 8 and Fig. 9 represent to be installed in the fluting blade of the present invention's the 2nd embodiment of the tool body 11 of above-mentioned the 1st embodiment, headed by the 2nd embodiment, in the 3rd to the 5th embodiment described later, enclosing same symbol with the common inscape of the 1st embodiment and omitting or simplified illustration.

The blade of the 2nd embodiment and the 1st embodiment are same, forming from a short side face 3B who is the blade body 1 of omiting the parallelogram shape makes the cutting blade 6 of a shape outstanding along the long side face 3A that intersects in the acute ends of

side

2A, 2B at this side face 3B, above-mentioned side face 3A side in the first end of this cutting blade 6 is formed with notch 6A, this notch 6A's is rake face above side face 3A side, and its protruding end is formed with cutting edge 4.And, the blade body 1 of the 2nd embodiment, be different from the 1st embodiment, the distolateral part of above-mentioned acute angle that is two

sides

2A, 2B is not the inclined plane, and, not having to form outstanding one section part at the central portion of side 2B yet, two

sides

2A, 2B are the tabular surface perpendicular to the thickness direction of blade body 1 (the center line C direction of installing hole 5), and 1 couple of center line C of blade body neither symmetric shape.

And, as Figure 10 to the 3rd embodiment shown in Figure 12, the present invention is useful in rotary cut with on the throw-away tipped cutter, nipped blade is in the 3rd embodiment, its blade body 1 tabular that assumes diamond in shape, the a pair of side 2A that assumes diamond in shape, the side of 2B (the side 2A of figure) is a rake face, the cutting edge 4 that has a 4A of angle R portion in the acute ends of this rhombus is formed at 4 arris portions of this side 2A, simultaneously, the side face 3D that is connected in the blade body 1 of these cutting edges 4 is respectively clearance face, and, as the side face 3D of these clearance face along with backing away towards side 2B side and becoming positive blade (positive tip) with angle of clearance.Thereby, be the similar rhombus that likens to the little circle of side 2A of rake face as the side 2B of the installed surface of blade body 1 inboard.And, in the blade body 1 of the 3rd embodiment, installing hole 5 is different from the 1st embodiment, and is promptly asymmetric to the plane that is orthogonal to center line C in the thickness direction central authorities of blade body 1, and the peristome that is positioned at side 2B side than its minor diameter part 5A forms the internal diameter counterbore shape bigger than abutting part 5B.

And, the nipped tool body 11 of above-mentioned blade in the 3rd embodiment, with the 1st embodiment prism-shaped that is square equally, but, the acute ends side corner sections that its first end face 11B checks the rhombus that blade body 1 is forms leg-of-mutton gable shape, and as above-mentioned forming, check and award as the angle of clearance of the side face 3D of the clearance face of positive blade body 1, the state that backs away along with sowing discord, the distolateral state that forms to the end face 11B of this elder generation opening of blade mount pad 12 elder generation of 11C on this from top 11C.And this blade mount pad 12 comprises: be the mount pad bottom surface 12A with the slightly same shape of above-mentioned side 2B and a little bit smaller diamond shaped of the installed surface that becomes blade body 1; The arris portion of tool body 11 rear end side of the rhombus that is from this mount pad bottom surface 12A upward 11C tower and above the 11C side check the angle of clearance that awards above-mentioned side face 3D and a pair of mount pad wall 12B, the 12C that tilts.Be screwed with the screw 12E of clamping component 13, its mount pad bottom surface 12A side is formed with the cylindrical portion 12F than the big a little footpath of internal thread part.

On the other hand, as these the 1st to the 3rd embodiments, applicable beyond throw-away tipped rotary cut instrument, clamp mechanism of the present invention,, also can be useful on the blade clamp mechanism as the throw-away tipped rotating tools of plain milling cutter to the 4th embodiment shown in Figure 15 as Figure 13.At this, the tool body 11 of this plain milling cutter is with axis Z and is the summary discus shape at center and rotates to direction of rotation T in when cutting, be formed with chip pocket 14 at its peripheral part with concavity, at wall towards the direction of rotation T of this chip pocket 14 side, be formed with blade mount pad 12 to the outer peripheral face 11E of tool body 11 and below the 11F opening, clamp and install blade body 1 by the clamp mechanism of present embodiment.And, generally a plurality of these chip pockets 14, blade mount pad 12, blade body 1, and blade clamp mechanism are set at the Zhou Fangxiang of tool body 11 compartment, still, only represent 1 and omit other diagram in present embodiment.

At this, the blade of present embodiment is, its blade body 1 is slightly foursquare tabular as shown in figure 15, be formed with in 4 arris portions of the side of the square shape that becomes rake face 2A and have the cutting edge 4 of the 4A of angle R portion in the bight of this side 2A, simultaneously, give the positive blade of 4 side face 3D angle of clearance around it equally with the 3rd embodiment, by around the above-mentioned center line C in turn rotating blade body 1 make the above-mentioned angle 4A of R portion be positioned at below the tool body 11 the 11F outer circumferential side to reinstall, can share 4 times cutting edge 4 with 1 blade body 1.And, according to this, about the abutting part 5B of the side 2A side opening portion that is formed on installing hole 5 also as shown in figure 15, see in center line C direction, 4 abutting part 5B that are crescent shape with same interval be formed on minor diameter part 5A around and be petal shape, and, the back side 13C contact of the head 13A of clamping component 13 is clamped blade body 1 at abutting part 5B, this abutting part 5B is positioned at cornerwise opposition side of side 2A of the 4A of angle R portion of the cutting edge 4 that is used in cutting.

And, Figure 16 to Figure 20 represents the 5th embodiment of the present invention, the blade of the 5th embodiment, same with the blade of Fig. 8 and the 2nd embodiment shown in Figure 9, forming from the side face 3B that is the weak point that omits the flat blade body 1 of parallelogram makes the cutting blade 6 of a shape outstanding along long side face 3A, become the structure that is formed with cutting edge 4 in its first end, use when the bottom outlet that is formed on workpiece is carried out internal diameter processing etc.And, in the present embodiment, at first in this blade body 1, as Figure 16 and a plurality of (being 2 the in the present embodiment) installing hole 5 that is formed with shown in Figure 19, simultaneously, at the blade mount pad 12 of tool body 11 sides, corresponding these installing holes 5 have a plurality of (being 2 in the present embodiment) clamping component 13 as shown in figure 20.

At this, above-mentioned installing hole 5 forms, make a plurality of installing holes 5 each other, as its center line of Figure 19 C parallel to each other and all to the thickness direction of blade body 1 extend and as Figure 16 direction (left and right directions of Figure 16) arrangement of extending to above-mentioned side face 3A, be formed with respectively at these installing holes 5, see from the side 2A side of blade body 1 to be the slightly abutting part 5B of crescent shape.And, in present embodiment, same with the 1st to the 3rd embodiment, the peristome of installing hole 5 is seen oval in shape in center line C direction, but, the abutting part 5B of present embodiment, be different from these embodiments of the 1st and even the 3rd or the 4th, promptly the section along center line C is not 1/4 dome arcuation, and form as shown in figure 19 along with from the side 2A side of the blade body 1 that is provided with this abutting part 5B interior all sides, with the summary linearity of certain inclination towards the side of opposition side 2B side towards installing hole 5 at this section.

And, this abutting part 5B is in the inclination of the straight line that section was that comprises above-mentioned center line C (to the inclination on the plane that is orthogonal to center line C) as shown in figure 19, the slowest on the plane P that comprises this center line C and above-mentioned long axis of ellipse, along this ellipse around the center line C along with becoming high-dipping continuously towards its minor axis side, simultaneously as shown in figure 19, the position of the center line C direction of this straight line itself is also along with the minor axis side of plane P around this center line C from comprising above-mentioned central shaft C and major axis, the 2A side backs away to side 3B side from the side, thereby the abutting part 5 of present embodiment protrudes to center line C direction the most at (on the above-mentioned major axis) on this plane P.Even, installing hole 5 in present embodiment, also same with the 1st embodiment, thickness direction central authorities in blade body 1 become symmetry to the above-mentioned plane that is orthogonal to center line C, and the minor diameter part 5A of the installing hole 5 of the inboard of abutting part 5B, as shown in figure 19, the width of its center line C direction is along with narrowing down gradually towards the minor axis side around this center line C from above-mentioned long axis of ellipse.

And, 2 installing holes 5 that are formed on blade body 1 are onesize for same shape, and, see in side 2A side as shown in figure 16, the above-mentioned long axis of ellipse that makes respectively to be is parallel to each other, even above-mentioned plane P is parallel to each other, and the above-mentioned major axis of the installing hole 5 that forms in a side's opposite acute angle end side in the acute angle end of the parallelogram that side 2A is with a side that is provided with above-mentioned cutting blade 6, side face 3A to this side's acute angle end, the intersection point of 3B extends, and, the above-mentioned major axis of the installing hole 5 that forms in the opposing party's who is provided with cutting blade 6 acute angle end side, the side face 3A towards this opposing party's acute angle end, the intersection point of 3B extends.But, the above-mentioned intersection point part of a wherein above-mentioned side's acute angle end, chamfering becomes to contact circular-arc at

side face

3A, 3B smoothly in the present embodiment.

And at above-mentioned side 2A, the branch of these a plurality of (2) installing holes 5 is provided with index 15 near other, and these index 15 expressions make before the above-mentioned clamping component 13 that corresponding each installing hole 5 is provided with and then the clamping sequence when clamping above-mentioned blade.These indexs 15, for example at the above-mentioned side 2A of blade body 1, wait and laser labelling etc. is established slotting leading in the order of the clamping component 13 of the installing hole 5 of adjacency quarter by numeral " 1 ", " 2 ", represent that in an above-mentioned side's acute angle end numeral is arranged respectively in the acute angle end of the parallelogram that side 2A is in the present embodiment " 1 ", represent that numeral is arranged " 2 " in the opposing party's acute angle end.

On the other hand, at the mount pad bottom surface 12A of the blade mount pad 12 of tool body 11, be formed with screw 12E with the corresponding respectively position at above-mentioned a plurality of installing holes 5 under the state that above-mentioned blade body 1 is housed.And, these screws 12E forms, make the center line O that is screwed in the clamping component 13 of this screw 12E, parallel to each other on the above-mentioned plane P of center line C that is comprising each corresponding installing hole 5 under this installment state and above-mentioned major axis, and along with towards the direction of advance of blade mount pad 12 sides of clamping component 13 (clamping component 13 be screwed into direction) side, sow discord and center line C is tilted and extends to the direction of an above-mentioned side's of blade body 1 acute angle end side from above-mentioned center line C.

And, the abutting part 5A of the blade body 1 under this installment state, be positioned at the part 5C on the above-mentioned plane P that comprises above-mentioned center line C and central axis O, the part that promptly is positioned on the above-mentioned major axis forms, the slowest as the above-mentioned inclination that aligns the plane that meets at center line C, and, protrude the most to this center line C direction, thereby, be positioned at part 5C on the plane P that comprises this central axis O and center line C in above-mentioned central axis O direction and form and protrude most.Therefore, the back side 13C of the head 13B of clamping component 13, along with being screwed into this clamping component 13 to central axis O direction and advancing to blade mount pad 12 sides, and contact is at the part 5C that is arranged on the above-mentioned plane P of abutting part 5.

So in the 5th embodiment that constitutes, at first, clamping component 13 is so before blade mount pad 12 sides and then when clamping blade, the back side 13C of its head 13B is in the abutting part 5B of the installing hole 5 of blade body 1, be positioned at 1 part 5C on the above-mentioned plane P and pushing blade body 1 in the Zhou Fangxiang contact, therefore, for example with in above-mentioned the 1st embodiment when contacting the back side 13C of

head

13B, 2 parts of the Zhou Fangxiang of abutting part 5B compare, can not disperse (in the present embodiment by the pushing force of this clamping component 13, stubborn power by external thread part 13F), and be communicated to blade body 1 effectively, and reliably and stably clamp blade.And, as present embodiment, clamping component 13 is, by its external thread part 13F is screwed into screw 12E, before blade mount pad 12 sides and then when clamping the clamping screw of blade body 1, can prevent that the back side 13C from decreasing at the eccentric wear that a plurality of parts contacts produce at abutting part 5B.

And, be formed with a plurality of (2) installing hole 51 blade body 1 in the present embodiment, simultaneously, corresponding these blade mount pad 12 sides at tool body 11 possess a plurality of (2) clamping component 13, therefore, can clamp blade more strongly.And, in the present embodiment, its central axis O of these clamping components 13 when blade mount pad 12 sides are advanced, regard as in the center line C direction of the installing hole 5 of blade body 1 and to be extension parallel to each other and state that this center line C is tilted, therefore, the press direction by above-mentioned a plurality of clamping components 13 can be arranged in a side of this parallel direction and side face 3A, the 3B of blade body 1 are contacted respectively at wall 12B, the 12C of blade mount pad 12 and push.Thereby, blade body 1 can be positioned at this blade mount pad 12 reliably and install, and can make the blade position of the cutting edge 4 of the distolateral above-mentioned cutting blade 6 of the elder generation that protrudes in tool body 11, when each exchange blade reproducibility well and consistent accurately, and prevent from advance to take place in the front and back of exchange blade cutting edge 4 the blade position dislocation and cause the situation of mismachining tolerance.

Even the central axis O that the center line C of a plurality of clamping components 13 is tilted like this regards as parallel to each other in this center line C direction each other in the present embodiment, but, if these are the angle of the crossing of the scope below 5 °, see in above-mentioned center line C direction, extend also passable to the direction that crosses one another.But, make side face 3A, the 3B that sees the blade body 1 of extending with scissors junction ground in this center line C direction in an above-mentioned side's acute angle end as present embodiment, when contact is installed this blade body 1 at wall 12B, the 12C of the blade mount pad 12 that extends to the direction of scissors junction equally, the central axis O of above-mentioned a plurality of clamping component 13 each other, see in center line C direction as above-mentioned, even extend to the direction that crosses one another, also preferably be configured to pitch in this side's acute angle end top-cross.

And, in present embodiment, so be formed with a plurality of installing holes 5 in blade body 1, simultaneously, the a plurality of clamping components 13 that possess corresponding these installing holes 5 at tool body 11, further possess in blade body 1, expression makes the index 15 of the order of these a plurality of clamping components 13 when blade mount pad 12 sides are advanced (being to be screwed in the present embodiment).For example, in the present embodiment, as the above-mentioned approaching wall 12B that is positioned at blade mount pad 12, the installing hole 5 of an above-mentioned side's of the blade body 1 of the cross part side of 12C acute angle end side, index 15 with numeral of being expressed as " 1 ", and, near the index 15 that the installing hole 5 of this opposite the opposing party's acute angle end side, has numeral of being expressed as " 2 ", therefore, the operator installs after the blade body 1 on blade mount pad 12 during the exchange blade, elder generation is at the installing hole 5 of an above-mentioned side's who is adjacent to the index 15 that is expressed as numeral " 1 " acute angle end side, be screwed into and insert the clamping component 13 that is connected with axial region 13A, then, installing hole 5 in the opposing party's who is adjacent to the index 15 that is expressed as numeral " 2 " acute angle end side is screwed into clamping component 13, and clamps blade.

Thereby, blade body 1, the clamping component 13 of the acute angle end by one side advances to blade mount pad 12 sides, the direction that the above-mentioned plane P that tilts to the central axis O of this clamping component 13 of being pressed is extended, be the acute angle corner portions that wall 12B, the 12C of blade mount pad 12 intersects, thus, side face 3A, 3B in this side's acute angle end portions cross contact universally after wall 12B, 12C, are pushed by the clamping component 13 of the opposing party's acute angle end side and as above-mentionedly are fixed up strongly.Therefore, in contrast to this, be screwed into by slotting logical clamping component 13 at the installing hole 5 of the opposing party's acute angle end side by operator elder generation, at the side face 3A of blade body 1 and the wall 12B of blade mount pad 12, or side face 3B and wall 12C do not have under the mutual whole state of contact, blade positions, then be screwed into the clamping component 13 of a side acute angle end side, and clamp blade with previous status, thereby, can prevent to reproduce the blade position of cutting edge 6 accurately and damage machining accuracy, or blade is unstable and cause the situation that jerking movement takes place or come off in machining.

And, numeral " 1 ", " 2 " are waited to carve by laser labelling at the side of blade body 1 2A as These parameters 15 in the present embodiment and establish, but, for example can also be arranged with or be convexly equipped with as above-mentioned numeral and represent, or except that numeral, can also approach projection or the depression that installing hole 5 forms the number of corresponding above-mentioned numeral in blade body 1.

Claims

1. the clamp mechanism of a throw away chip, to be formed with the throw away chip of the installing hole that connects blade body, insert the clamping component lead in the axial region of above-mentioned installing hole and the head bigger and advance towards the blade mount pad side of tool body by making to have to the central axial direction of above-mentioned axial region than this axial region external diameter, head by above-mentioned clamping component pushes and is clipped on the above-mentioned blade mount pad, it is characterized in that: in the above-mentioned clamping component, becoming with this axis with the above-mentioned central axis cross section orthogonal at the back side of above-mentioned head is central circular, on the other hand, in the blade body of above-mentioned throw away chip, the head of above-mentioned clamping component can be by in the installing hole, simultaneously, peristome at this installing hole is provided with abutting part, and this abutting part is connected to the part at the back side of above-mentioned head when above-mentioned clamping component has advanced.

2. the clamp mechanism of throw away chip according to claim 1, it is characterized in that: in the above-mentioned blade body, above-mentioned abutting part forms, and sees the crescent shape of protruding to outer circumferential side from the inner peripheral of this installing hole along the direction of the center line of above-mentioned installing hole.

3. the clamp mechanism of throw away chip according to claim 1 and 2 is characterized in that: in the above-mentioned clamping component, the center line of the above-mentioned relatively installing hole of above-mentioned central axis tilts.

4. the clamp mechanism of throw away chip according to claim 3, it is characterized in that: at above-mentioned abutting part, the part that is positioned on the plane of center line of the central axis that comprises above-mentioned clamping component and above-mentioned installing hole forms the shape that relative other parts are protruded to this central axial direction most.

5. according to the clamp mechanism of claim 3 or 4 described throw away chips, it is characterized in that: in above-mentioned blade body, be formed with a plurality of above-mentioned installing hole with above-mentioned center line parallel to each other, simultaneously, at above-mentioned tool body, a plurality of above-mentioned clamping component with corresponding these installing holes, the above-mentioned central axis of seeing these clamping components from above-mentioned centerline direction is to parallel to each other or extend with the direction that the angle of the crossing below 5 ° intersects.

6. according to the clamp mechanism of any described throw away chip in the claim 3 to 5, it is characterized in that: in above-mentioned blade body, be formed with a plurality of above-mentioned installing hole with above-mentioned center line parallel to each other, simultaneously, at above-mentioned tool body, have a plurality of above-mentioned clamping component of corresponding these installing holes, and, in above-mentioned blade body, also has the index that expression makes the order of these clamping components when above-mentioned blade mount pad side has been advanced.

7. according to the clamp mechanism of any described throw away chip in the claim 1 to 6, it is characterized in that: in the above-mentioned clamping component, above-mentioned head opposition side at above-mentioned axial region, be provided with the screw portion that is screwed in above-mentioned tool body, this clamping component around the above-mentioned central axis full Zhou Xuanzhuan and advance to above-mentioned blade mount pad side.

8. according to the clamp mechanism of any described throw away chip in the claim 1 to 7, it is characterized in that: in the above-mentioned clamping component,, be provided with than the big large-diameter portion of above-mentioned installing hole external diameter at the above-mentioned head opposition side of above-mentioned axial region.