CN1177663C

CN1177663C - Replaceable cutter blade and replaceable cutter

Info

Publication number: CN1177663C
Application number: CNB011176601A
Authority: CN
Inventors: 长屋秀彦; 一; 池永幸一; 下村博
Original assignee: Mitsubishi Materials Corp
Current assignee: Mitsubishi Materials Corp
Priority date: 2000-05-30
Filing date: 2001-04-28
Publication date: 2004-12-01
Anticipated expiration: 2021-04-28
Also published as: CN1328891A

Abstract

The throwaway tip characterized that the shape is approximately square type plate late, and the corner angle of the another two corner tooth which adjoins each other of one face is made as 90 DEG or less, and the other two corner edge which counters respectively is made as non parallel cutting tooth, a corner angle of another corner cutting edge(11) is set to 90 deg.C or less. The throwaway type cutting tool characterized that two or more throwaway tip is the same as the throwaway tip, and the throwaway tips are arranged so that the other two corner tooth projects respectively to a perimeter side of a tip of a main part of a tool, in a throwaway type cutting tool that the two or more throwaway tips are arranged so that the tip is projected respectively to a tip side of a main part of a tool.

Description

Changeable blade and changeable type cutting tool

Technical field

The present invention relates to changeable blade (below be also referred to as blade) and the changeable type cutting tools such as slotting cutter of this changeable blade are housed.

This specification is to write the content that the part of this specification has adopted this Japanese application to be put down in writing according to the explanation of applying for a patent (special hope 2000-160902 number, special hope 2000-180438 number) to Japan.

Background technology

Now, with several pieces, for example 2 tabular changeable blades of parallelogram are contained on the front end of cutter body and constitute, can carry out in the replaceable blade chip slotting cutter of projection processing, one side's blade configuration become will long sword as the front sword, will lack sword as peripheral edge, the opposing party's blade configuration become will lack sword as the front sword, will long sword as peripheral edge.

In this case, if the shape of 2 blades is identical, size is the same, then the management of blade or replacing use etc. are easily.But, on this slotting cutter, peripheral edge is that the rotation along cutter body sets, under the situation that is used to cut shoulder or the hole is processed etc., for example to tilt to be adapted to the angle sword forward end of outer circumferential side outstanding and move back to the butt rear flank gradually towards the inboard for the front sword of a side blade, then the medial angle sword of the front sword of the opposing party's blade is more side-prominent than the angle sword forward end of outer circumferential side, because low speed, so exist damaged shortcoming easily.

For fear of this shortcoming, if the front sword of the opposing party's blade is configured to inboard angle sword diametrically, and forward end one is not side-prominent, then the peripheral edge of the opposing party's blade is than the peripheral edge of a side blade tilted configuration to the inside, do not play peripheral edge, so peripheral edge is cut with 1 sword of a side blade, it is low to exist easily damaged shortcoming of peripheral edge and stock-removing efficiency equally.

Like this, the multi-disc blade exchange is used, under situation about re-using as the front sword as the used cutting edge of the peripheral edge of blade, near the part angle sword of the outer circumferential side that the forward end one on the sword of front is side-prominent, be the employed part of the smart cutting of workpiece experience wear, be difficult to guarantee that blade has sufficient sharpness.

As the invention that has improved this undesirable condition, there is the spy to drive the slotting cutter described in the flat 10-291115 communique.On this slotting cutter, adopt following configuration mode, promptly adopt and press two kinds of opposite blades that parallelogram is tabular of line symmetry formation, by with the weak point sword of a side blade as the front sword, the long sword of the opposing party's blade is used as the front sword, make the angle sword configuration mode more side-prominent of the outer circumferential side of each front sword than inboard angle sword forward end one.Like this, just periphery side angle sword can be carried out machining as the two-edged lobe, suppress the damaged of periphery side angle sword, can improve stock-removing efficiency.

But this slotting cutter must be prepared two kinds of blades with different face shapings, exist management and change to use miscellaneous, the running expense geometric ratio is higher, and the high shortcoming of the manufacturing cost of blade.

On above-mentioned any slotting cutter, on the peripheral edge of changeable blade, make cutter body when rotation rotates, the rotational trajectory intersection (forming two-edged lobe part) of the peripheral edge of 2 blades and intersection (formation single-blade lobe part) not can appear in each cutting edge.

The part that forms the single-blade lobe on the cutting edge is compared with the part that forms the two-edged lobe, and the cutting resistance that is subjected to when cutting workpiece is big, easily damage.

Summary of the invention

The objective of the invention is provides a kind of changeable blade in view of above-mentioned actual conditions, and this changeable blade can suppress the damage of cutting edge, and can dispose various cutting edge, has several cutting edges.

Another object of the present invention provides a kind of cutting tool, and this cutting tool uses a kind of changeable blade, and periphery side angle sword can be provided in respectively on front end one side highlightedly.

In order to achieve the above object, changeable blade of the present invention is characterised in that: blade is that roughly quadrangle is tabular, the angle of 2 angle swords of an adjacent side of a face is below 90 °, 2 seamed edges that comprise a side in opposite directions of these angle swords are respectively made uneven cutting edge, the angle of an angle sword in 2 angle swords of the opposing party of an above-mentioned face is below 90 °, with this angle sword and the cutting edge of one of angle sword that comprises an above-mentioned side as long sword, be formed with the assisted machining sword on the end of an angle sword in the angle sword that comprises an above-mentioned side on this long sword, this assisted machining sword along with to this angle sword near and tilt with respect to other parts to the inboard of an above-mentioned face with retreating.

With several pieces this changeable blades, being adapted to the angle sword that makes a side is positioned at front end outer circumferential side ground and is provided in respectively under the situation on the cutter body front end, when 1 cutting edge that will clip each angle sword as peripheral edge when the rotation of cutter body sets, other cutting edge that then clips the angle sword tilts towards radicle from outer circumferential side to the inside as the front sword, the angle sword of front sword, peripheral edge and outer circumferential side can be disposed as the two-edged lobe, like this, be not easy damaged and stock-removing efficiency high, blade is also taken care of easily.

The assisted machining sword plays shear action when cutting edge is used as the front sword, when cutting edge is used as peripheral edge, the assisted machining sword is kept out of the way interior all sides of cutter body with respect to other parts of this cutting edge, workpiece is not played shear action, so when cutting edge is used as peripheral edge, the aggravation that the assisted machining sharpening decreases can be prevented, the sharpness of assisted machining sword can be guaranteed when using as the front sword.

Changeable type cutting tool of the present invention is that a kind of front end at cutter body is equipped with cutting edge several pieces changeable blades of disposing of forward end one and the changeable type cutting tool that constitutes respectively side-prominently, it is characterized in that: several changeable blades are the same with the described changeable blade of the present invention's the 1st technical scheme, several changeable blades are configurations like this, and 2 angle swords of a promptly adjacent side are outstanding respectively to be configured on the front end outer circumferential side of cutter body.

If 2 angle swords of a side are provided in respectively on the front end outer circumferential side of cutter body, add man-hour carrying out perforate, can begin to cut from the angle sword of outer circumferential side, can suppress damaged.Carrying out the shoulder cutting or groove is added man-hour, available peripheral edge is carried out the shoulder cutting, and the angle sword with the front end outer circumferential side carries out fine finishining simultaneously.

Description of drawings

Fig. 1 (a) is the vertical view of the changeable blade of the expression embodiment of the invention 1.

Fig. 1 (b) is the A direction side view of Fig. 1 (a).

Fig. 1 (c) is the B direction side view of Fig. 1 (a).

Fig. 2 (a) is the side view of major part that the slotting cutter of 4 changeable blades shown in Figure 1 is housed.

Fig. 2 (b) is the front view of the slotting cutter shown in Fig. 2 (a).

Fig. 3 is a side view of seeing the slotting cutter shown in Fig. 2 (a) from the C1 direction.

Fig. 4 is a side view of seeing the slotting cutter shown in Fig. 2 (a) from the D1 direction.

Fig. 5 (a) is the vertical view of the changeable blade of the expression embodiment of the invention 2.

Fig. 5 (b) is a side view of seeing the blade of Fig. 5 (a) from the E1 direction.

Fig. 5 (c) is a side view of seeing the blade of Fig. 5 (a) from the F1 direction.

Fig. 5 (d) is a side view of seeing the blade of Fig. 5 (a) from the G1 direction.

Fig. 6 is the front view that the slotting cutter of changeable blade shown in Figure 5 is housed.

Fig. 7 is a side view of seeing the slotting cutter shown in Fig. 6 from a side peripheral edge direction.

Fig. 8 is a side view of seeing the slotting cutter shown in Fig. 6 from the opposing party's peripheral edge direction.

Fig. 9 (a) is the vertical view of changeable blade of the variation of expression embodiment 2.

Fig. 9 (b) is a side view of seeing the blade of Fig. 9 (a) from the H1 direction.

Fig. 9 (c) is a side view of seeing the blade of Fig. 9 (a) from the I1 direction.

Fig. 9 (d) is a side view of seeing the blade of Fig. 9 (a) from the J1 direction.

Fig. 9 (e) is a side view of seeing the blade of Fig. 9 (a) from the K1 direction.

Figure 10 is the vertical view of the changeable blade of the expression embodiment of the invention 3.

Figure 11 (a) is the L-L line profile of the section configuration of expression changeable blade shown in Figure 10.

Figure 11 (b) is the M-M line profile of Figure 10.

Figure 12 is the major part side view that the slotting cutter of 2 changeable blades shown in Figure 10 is housed.

Figure 13 is the front view of slotting cutter shown in Figure 12.

Figure 14 is a side view of seeing slotting cutter shown in Figure 12 from the peripheral edge direction.

Figure 15 is the side view of the slotting cutter of the embodiment of the invention 4.

Figure 16 is a side view of seeing slotting cutter shown in Figure 15 from the C2 direction.

Figure 17 is a side view of seeing slotting cutter shown in Figure 15 from the D2 direction.

Figure 18 (a) is the vertical view of the changeable blade of the expression embodiment of the invention 5.

Figure 18 (b) is a side view of seeing the blade of Figure 18 (a) from the E2 direction.

Figure 18 (c) is a side view of seeing the blade of Figure 18 (a) from the F2 direction.

Figure 18 (d) is a side view of seeing the blade of Figure 18 (a) from the G2 direction.

Figure 19 is the front view that the slotting cutter of changeable blade shown in Figure 180 is housed.

Figure 20 is a side view of seeing slotting cutter shown in Figure 19 from a side peripheral edge direction.

Figure 21 is a side view of seeing slotting cutter shown in Figure 19 from the opposing party's peripheral edge direction.

Figure 22 (a) is the vertical view of changeable blade of the variation of expression embodiment 5.

Figure 22 (b) is a side view of seeing the blade of Figure 22 (a) from the H2 direction.

Figure 22 (c) is a side view of seeing the blade of Figure 22 (a) from the I2 direction.

Figure 22 (d) is a side view of seeing the blade of Figure 22 (a) from the J2 direction.

Figure 22 (e) is a side view of seeing the blade of Figure 22 (a) from the K2 direction.

Figure 23 is the vertical view of the changeable blade of the expression embodiment of the invention 6.

Figure 24 is the side view of the slotting cutter of the embodiment of the invention 6.

Figure 25 is the sectional drawing of section configuration of each several part of the changeable blade of the expression embodiment of the invention 7.

Figure 26 is the sectional drawing of section configuration of each several part of the changeable blade of the expression embodiment of the invention 8.

The specific embodiment

Below, changeable blade and the replaceable blade chip slotting cutter to the embodiment of the invention 1 describes with reference to the accompanying drawings.Fig. 1 is that figure, Fig. 2, Fig. 3, Fig. 4 of the changeable blade of expression embodiment 1 is the figure of expression replaceable blade chip slotting cutter.Fig. 1 (a) is the vertical view of changeable blade, the A direction side view that Fig. 1 (b) is changeable blade shown in Fig. 1 (a), Fig. 1 (c) is the B direction side view of changeable blade shown in Fig. 1 (a), Fig. 2 (a) is the side view at main position that the slotting cutter of changeable blade shown in Figure 1 is housed, Fig. 2 (b) is the front view of the slotting cutter shown in Fig. 2 (a), Fig. 3 is the C1 direction side view of slotting cutter shown in Fig. 2 (a), and Fig. 4 is the D1 direction side view of slotting cutter shown in Fig. 2 (a).

Changeable blade embodiment illustrated in fig. 1 (below, be also referred to as blade) 1 be that roughly quadrangle is tabular, be provided with 3,4 sides 4 of end face in opposite directions, bottom surface 2 that constitute bearing-surface be from the bottom surface 2 towards end face 3, be provided with obliquely laterally gradually with foursquare inclination angle (relief angle), as positive blade.On blade 1, connect bottom surface 2 from the central portion of end face 3 and have the inserting hole 5 that bolt stop is used.

The end face 3 of blade 1 and bottom surface 2 are the tabular of almost parallel, and a pair of seamed edge of in opposite directions each of 4 seamed edges of end face 3 is as short sword and long sword, and a side who constitutes 2 cutting edges of short sword is the first long short sword 6, and the opposing party is the 2nd a relatively shorter short sword 7.Another that constitutes long sword is in opposite directions 2 limits, for example as the first long sword 8 and the second long sword 9 grown than the first short sword 6.And the first short sword 6 and second is in opposite directions lacked sword 7 and is not parallel to each other mutually, and another is also not parallel to the long sword of in opposite directions first and second 8,9.End face 3 is as the front of each

cutting edge

6,7,8,9, and each side 4 is as the back.

One of end face 3 first jiao of sword 10 to the angular direction, second jiao of sword 11 are that the first short sword 6 and first long sword 8, the second short sword 7 and the second long sword 9 intersect and formation respectively, its angle is respectively below 90 °, be preferably acute angle, is below 90 ° by another to the third angle sword 12 that the first short sword 6 and the second long sword 9 of angular direction constitute, be preferably acute angle, the angle of the 4th jiao of sword 13 that is made of the second short sword 7 and the first long sword 8 is the obtuse angle.

First to the angle of

third angle sword

10,11,12 equate also can, unequal good.

The third angle sword 12 that comprises at the second long sword 9 is formed with the assisted machining sword 97 that tilts with respect to other parts in interior end, so as along with to third angle sword 12 near and retreat to the inboard of end face 3.Assisted machining sword 97 is with respect to other part cant angle theta angles of the second long sword 9 (for example θ=5 °).

The changeable blade 1 of present embodiment constitutes as described above, according to Fig. 2, Fig. 3, Fig. 4 the slotting cutter 20 that several pieces this changeable blades 1 are installed is illustrated below.

The leading section of the cutter body 21 of slotting cutter 20 is provided with 2

grooves

22,23, these 2 grooves with respect to the axis of rotation O that constitutes its centre of gyration be substantially in opposite directions and section be fan-shaped.Each groove the 22, the 23rd, from the middle part outer peripheral face of the length direction of cutter body 21 forward end face 21a grooving form, on the face of the gyratory directions of the groove 22 of a side, be formed with blade mount pad 24a, on the face of the gyratory directions of the groove 23 of opposite side, also be formed with blade mount pad 24b.

On the blade mount pad 24a of a side, above-mentioned changeable blade 1 with the second long sword 9 as the front sword, be installed with side-prominently from the front end face 21a forward end one of cutter body 21, with it as main blade 1A.On the blade mount pad 24b of opposite side, changeable blade 1 with first short sword 6 as the front sword, be installed with side-prominently from the front end face 21a forward end one of cutter body 21, with it as auxiliary blade 1B.

As main blade 1A, first and second

long sword

8,9 is configured on the direction of intersecting with axis of rotation O, this configuration status as landscape configuration, as auxiliary blade 1B, first and second

long sword

8,9 is configured on the direction of axis of rotation O, this configuration status is disposed as vertical.

Main blade 1A sets like this, be that third angle sword 12 is provided on the front end outside, the first short sword 6 is outstanding along the outer peripheral face of cutter body 21, and with axis of rotation O almost parallel, this first short sword is as peripheral edge, therefore, tilt with respect to rotation O with angle [alpha] (for example α=5 °) from the side-prominent second long sword 9 of the front end face 21a forward end one of cutter body 21, along with from outer circumferential side to rotation O direction near and move closer to the butt side, second jiao of sword 11 of the acute angle of the other end of the formation second long sword 9 is positioned at an opposite side with rotation O, and the 2nd short sword 7 intersects with rotation O.

First jiao of sword 10 of auxiliary blade 1B is provided on the front end outside, the first long sword 8 is outstanding and substantially parallel with rotation O along the outer peripheral face of cutter body 21, use as peripheral edge, therefore, from side-prominent the 1st short sword 6 of the front end face 21a forward end of cutter body 21 with angle beta (β=7～10 ° for example, β=α also can) tilt, along with from outer circumferential side to rotation O direction near and move closer to radicle, the third angle sword 12 of the other end leaves rotation O and is positioned at the outside.

Therefore, be positioned at second of two blade 1A, 1B inboard and lack the sword 7 and the second long sword 9 and

side

4,4 thereof from front end one side direction butt one side, inclination laterally on the direction of leaving rotation O gradually.

In this configuration structure, other parts of assisted machining sword 97 to the second long swords 9 on the second long sword 9 of blade 1A are side-prominent to the front end one of cutter body 21, and the second long sword 9 of blade 1B is positioned at all sides of cutter body 21, does not play shear action.

Main blade 1A and auxiliary blade 1B are mounted to the first short sword b of each peripheral edge and the first long sword 8 as shown in Figure 4, and axial top rake is positive angle (only having represented the first long sword 8 among Fig. 4).And for example shown in Fig. 2 (b), main blade 1A is on the radius centered line for the second long sword 9 that constitutes the front sword is positioned at rotation O, radial rake is 0 °, and auxiliary blade 1B constitutes on the core position up for the first short sword 6 that constitutes the front sword is positioned at, and radial rake is a negative angle.

In the groove 22 of a side, the butt side of main blade 1A also is formed with blade mount pad 31a, and above-mentioned changeable blade 1 is installed with as the 3rd blade 1C.The 3rd blade 1C is outstanding from the outer peripheral face of cutter body 21 towards radial outside as peripheral edge with the second long sword 9, is positioned on the position with rotation O almost parallel, and the second short sword 7 sets towards front.This collocating structure is formed at the assisted machining sword 97 on the 3rd blade 1C is kept out of the way cutter body 21 with respect to other parts of the second long sword 9 interior Monday of side.

This second long sword 9 as shown in Figure 3, dispose near the butt side than the first long sword 8, so that axially top rake is a positive angle, overlap with the rotational trajectory of the first long sword 8 of the peripheral edge that constitutes auxiliary blade 1B, the peripheral edge of this auxiliary blade 1B is positioned at the rotation O that clips cutter body 21 and in opposite directions the position.And the second long sword 9 that constitutes the first short sword 6 of main blade 1A of each peripheral edge and the 3rd blade 1C is to the butt side, setting in the mode of turning round to the direction of rotation rear side of cutter body 21 from front.

In the groove 23 of opposite side, the butt side of auxiliary blade 1B also is formed with blade mount pad 31b, and above-mentioned changeable blade 1 is installed with as four blade sheet 1D.This four blade sheet 1D with the 1st long sword 8 as peripheral edge, outstanding from the outer peripheral face of cutter body 21 to radial outside, be positioned on the position with rotation O almost parallel, the first short sword 6 is set towards front end one side.In this configuration structure, the second long sword 9 of blade 1D is positioned at side Monday of cutter body 21, does not play shear action.

This first long sword 8 as shown in Figure 4, dispose near the butt side than the second long sword 9, so that axially top rake is a positive angle, overlap with the rotary track of the second long sword 9 of the peripheral edge that constitutes the 3rd blade 1C, the peripheral edge of the 3rd blade 1C is positioned at the axis of rotation O that clips cutter body 21 and in opposite directions the position.And the first long sword 8 that constitutes the first long sword 8 of auxiliary blade 1B of each peripheral edge and four blade sheet 1D, is setting in the mode of turning round to the direction of rotation rear side of cutter body 21 towards the butt side from front.

The changeable blade 1 of present embodiment and slotting cutter 20 are owing to constitute as described above, therefore, if making cutter body 21 is the center rotation with rotation O, workpiece is cut, then use

angle sword

12,10 to contact with workpiece to the outer circumferential side of the side-prominent second long sword 9 of the front end one of cutter body 21 and the first short sword 6, this regional rotary speed is than near the height the rotation, so the cutting resistance during contact is little, can produce damagedly and cut.In addition, by cutter body 21 being delivered to rotation O direction front end one side, the second long sword 9 that just available its rotational trajectory coincides and the first short sword 6 are rotated machining as drill bit.

With cutter body 21 past crossfeeds, the first long sword 8 that then constitutes the second long sword 9 of the first long sword 8, the 3rd blade 1C of the first short sword 6 of peripheral edge of main blade 1A and auxiliary blade 1B and four blade sheet 1D carries out periphery as the two-edged lobe respectively and cuts, and the angle sword 12 of the second long sword 9 of available main blade 1A, the first angle sword 10 of lacking sword 6 that reaches auxiliary blade 1B carry out smart machining.Perhaps, first of the available formation peripheral edge short sword 6 and the first long sword 8 carry out shoulder machining or groove processing etc.

Here, slotting cutter 20 according to present embodiment 1, the main blade 1A landscape configuration that will be positioned at cutter body 21 front ends becomes to make the first short sword 6 to become peripheral edge, and auxiliary blade 1B vertically is configured to the first long sword 8 becomes peripheral edge, so the 3rd blade 1C and four blade sheet 1D can be configured to the rotational trajectory of each peripheral edge is continuous in the butt side of each main blade 1A and auxiliary blade 1B, can carry out deep hole machining.And each blade 1A, 1B, 1C, 1D just can finish this processing with same blade.

Even the arbitrary cutting edge at blade 1A, 1B, 1C, 1D is damaged, or under the worn out situation, as long as change, install same changeable blade 1.

In addition, the configuration quantity of blade 1 is not necessarily leaveed no choice but 4, also can set more than 3 or 5.

And, configuration relation according to main blade 1A and the 3rd blade 1C, the first long sword 8 that is positioned at main blade 1A butt side from the outer circumferential side of cutter body 21 towards the forward end lopsidedness configuration gradually of rotation O one side, the 3rd blade 1C because of the second short sword 7 from outer circumferential side towards rotation O one side, oblique to the butt inclination, so the thickness of the outer peripheral portion 27 between two blade 1A, the 1C can increase from the inside all sides of outer circumferential side, therefore, can guarantee the intensity of cutter body 21 together with front end pars intermedia 26.

If it is continuous that each peripheral edge can be configured to rotational trajectory, then in Fig. 2, Fig. 3, Fig. 4, promptly can be with four blade sheet 1D landscape configuration, lack sword 6 or second with first and lack sword 7 as peripheral edge, also can be with the 3rd blade 1C and four blade sheet 1D vertically configuration upside down, with first long sword 8, the second long sword 9 respectively as peripheral edge.

As mentioned above, according to present embodiment, be installed on the cutter body 21 with different setting angles, the posture blade 1 that several pieces are same, can respectively the second long sword 9 and first be lacked sword 6 as the front sword, the first short sword 6 and the first long sword 8 are configured as peripheral edge, and a kind of blade of changing usefulness gets final product certainly, so the running expense of the manufacturing expense of blade and cutting tool is low.

And, the first jiao of sword 10 of at least the first short sword 6 both sides and the angle of third angle sword 12 are below 90 °, it for example is acute angle, so the

angle sword

12,10 of the front end outer circumferential side of main blade 1A and auxiliary blade 1B is set under the side-prominent state of forward end one, so it is damaged to suppress the cutting edge of

angle sword

12,10, can be used as the two-edged lobe configuration that rotational trajectory overlaps, so the stock-removing efficiency height.Under installment state, the side 4 of the inboard of main blade 1A, auxiliary blade 1B is from the front end of cutter body 21 towards the butt side, tilt to the direction of leaving rotation O gradually, therefore, can guarantee to make the thickness of front end central portion 26 of the cutter body 21 of two blade 1A, 1B clamping to increase, can guarantee the rigidity of vane body 21 along axis of rotation.

On changeable blade 1, the assisted machining sword 97 of blade 1A can be used for smart cutting, 97 pairs of workpiece of the assisted machining sword of other blades 1B, 1C, 1D do not play shear action.

Like this, in the slotting cutter 20, changeable blade 1 is except the situation that the second long sword 9 is used as the front sword, the degree of wear that also can prevent assisted machining sword 97 is deepened, so can guarantee the sharpness of cutting edge 97, when assisted machining sword 97 is carried out fine finishining as the front sword to workpiece, can obtain good polished surface.

In addition, on the blade 1D of the butt side that is positioned at cutter body 21, since be with the 1st long sword 8 that does not form assisted machining sword 97 as peripheral edge, so on the 2nd long sword 9, be formed with assisted machining sword 97, and can guarantee the maximum depth of cut S of changeable type cutting tool.

Here, the changeable blade 1 of present embodiment is not limited to and is contained on the slotting cutter 20, also can be contained on other the slotting cutter.

(embodiment 2)

Below, other examples of changeable blade of the present invention as embodiment 2, are described according to Fig. 5, describe with prosign with the changeable blade 1 the same or identical part of embodiment 1.

Fig. 5 (a) is that vertical view, Fig. 5 (b) of present embodiment changeable blade is the side view of changeable blade E1 direction shown in Fig. 5 (a), Fig. 5 (c) is the side view of changeable blade F1 direction shown in Fig. 5 (a), and Fig. 5 (d) is the side view of changeable blade G1 direction shown in Fig. 5 (a).

It is tabular that the changeable blade of embodiment 2 shown in Figure 5 (below be also referred to as blade) 40 roughly is quadrangle, and bottom surface 2 end face 41 in opposite directions that constitutes bearing-surface from the first short sword 6 towards in opposite directions the second short sword 7, with bottom surface 2 between distance diminishingly tilt and form plane, so the first long sword 8 and the second long sword 9 also become the linearity cutting edge from the first weak point sword, 6 one sides towards the second weak point sword, 7 lopsidedness.Therefore, the distance between the second short sword 7 and the bottom surface 2 is minimum.

The inserting hole 5 that connects end face 41, bottom surface 2 with the vertical substantially direction in bottom surface 2 on perforate, also can with the vertical direction of end face 41 on perforate.

Under situation about being installed in this blade 40 replacement blades 1 on the above-mentioned slotting cutter 20, if not changing the radial rake and the axial top rake ground of each cutting edge of each blade 40 installs, then can increase

blade mount pad

24a, 24b, the 31a of blade back, the thickness of 31b, can improve the intensity of cutter body 21.Among main blade 40A shown in Figure 6 or the 3rd blade 40C shown in Figure 7, can establish the thickness that is positioned at second short sword 7 one sides of

blade mount pad

24a, 31a thicker.

In the posture of the bearing-surface that does not change blade 40 or blade 1 (bottom surface 2) and be installed under the situation on the blade mount pad, as shown in Figure 8, be positioned on the auxiliary blade 40B and four blade sheet 40D of front end one side at the first short sword 6, axial top rake as the first long sword 8 of each peripheral edge can increase, and can improve the sharpness of periphery cutting edge.

Variation as the blade 40 of embodiment 2 also can have structure shown in Figure 9.Fig. 9 (a) is the vertical view of the changeable blade of present embodiment, Fig. 9 (b) is the H1 direction side view of the changeable blade shown in Fig. 9 (a), Fig. 9 (c) is the side view of changeable blade I1 direction shown in Fig. 9 (a), Fig. 9 (d) is the changeable blade J1 direction side view shown in Fig. 9 (a), and Fig. 9 (e) is the changeable blade K1 direction side view shown in Fig. 9 (a).

The changeable blade 43 of variation shown in Figure 9 is that roughly quadrangle is tabular, form helicoids with the bottom surface 2 that constitutes bearing-surface end face 44 in opposite directions, thus first short sword 6, second short sword 7, first long sword 8, the second long sword 9 respectively the angle sword from an end of angle sword towards the other end, and the distance of bottom surface 2 gradually change respectively with the linearity cutting edge of arbitrarily angled formation inclination.

The inserting hole 5 that connects end face 44, bottom surface 2 with the vertical substantially direction in bottom surface 2 on bore a hole, also can on the direction vertical, bore a hole with end face 44.

Adopt this structure, can set suitable radial rake and axial top rake according to the installation site and the posture of each cutting edge.

On the

blade

1,40,43 of embodiment 1 and embodiment 2, variation, also can on end

face

3,41,44, establish chip-breaker.

Two blades 1,1 (40,40; 43, each front sword 43) also can be provided in core up or on the core position down.

On the

blade

1,40,43 of embodiment 1, embodiment 2, variation, the angle that is first, second, third jiao of

sword

10,11,12 of acute angle can equate, also can be unequal.

In the

changeable blade

1,40,43 of the foregoing description 1, embodiment 2, variation, each

long sword

8,9,

short sword

6,7 are set as linearity, but also can be set as the convex curve shape or the sag vertical curve shape replaces linearity, in this case,

end face

3,41,44 can be convex surface, also can be concave curved surface.

Changeable blade of the present invention is not limited to and is contained on the slotting cutter 20, also can be installed on the various cutting tools such as the commentaries on classics sharpener tool of other kinds or rotary cutter.

(embodiment 3)

Below, with reference to accompanying drawing the changeable blade and the replaceable blade chip slotting cutter of the embodiment of the invention 3 is illustrated the same with the various embodiments described above or identical part prosign, no longer repeat specification.Figure 10, Figure 11 are the figure of the changeable blade of expression embodiment 3, and Figure 12, Figure 13 are the figure of the replaceable blade chip slotting cutter of expression embodiment 3.Figure 10 is that vertical view, Figure 11 of changeable blade is the profile of section configuration of each one of expression changeable blade shown in Figure 10, Figure 11 (A) is the L-L line profile of Figure 10, Figure 11 (b) is the M-M line profile of Figure 10, Figure 12 is important the side view that the slotting cutter of changeable blade shown in Figure 10 is installed, Figure 13 is the front view of slotting cutter shown in Figure 12, and Figure 14 is an important side view seeing the slotting cutter shown in Figure 12 from peripheral edge one side.

In Figure 10 and the changeable blade embodiment illustrated in fig. 11 (below be also referred to as blade) 101, the configuration of its bottom surface 2,3,4 sides 4 of end face, inserting hole 5 and shape are that the roughly quadrangle basic the same with the changeable blade 1 of embodiment 1 is tabular.And, the same with blade 1, in opposite directions each a pair of seamed edge in 4 seamed edges of the end face 3 of blade 101 as short sword and long sword, is constituted the first long as a comparison short sword 6 of a side of 2 cutting edges of short sword, the opposing party is the second weak point sword 7 of weak point as a comparison.Constitute the other both sides in opposite directions of long sword, for example as the first long sword 8 and the second long sword 9 than first short sword 6 length.And it is not parallel that the first short sword 6 and second is in opposite directions lacked sword 7, and the long sword of in opposite directions first and second in addition 8,9 is also not parallel.End face 3 is as the front of each cutting edge 6,7,8,9, and each side 4 is as the back.In addition, in the land portion 14 that is connected with each cutting edge that is formed with in full week of pushing up 3.

A side the first jiao of sword 10 to the angular direction in the end face 3, second jiao of sword 11 are by the first short sword 6 and first long sword 8, the second short sword 7 and second long sword 9 intersections and form respectively, in addition, also be provided with third angle sword 12 that the first short sword 6 and the second long sword 9 to the angular direction by the opposing party constitute and lack the 4th jiao of sword 13 that sword 7 and the first long sword 8 constitute by second.The angle of each angle sword equates substantially with the angle of the blade 1 of embodiment 1 respectively.

On this changeable blade 101, near the part of the 4th jiao of sword 13 of the first long sword 8, and the part of the 2nd jiao of sword 11 of the close second long sword 9 on be formed with strengthening section 15 respectively.

The strengthening section 15 that is formed on the first long sword 8 is to constitute like this, for example, shown in the profile of Figure 11 (a), the anterior angle γ 1 (first anterior angle) on the first long sword 8 near the land portion 14 on the 4th jiao of sword 13 part, and the anterior angle γ 2 (second anterior angle) of end face 3 establish forr a short time respectively than the anterior angle γ 4 (with reference to Figure 11 (b)) of the anterior angle γ 3 of the land portion 14 of other parts of the first long sword 8 and end face 3.

Equally, strengthening section 15 on the second long sword 9 is to constitute like this, promptly establishes than the angle little (not shown) of the anterior angle γ 4 of the anterior angle γ 3 of the land portion 14 on other parts of the 2nd long sword 9 and end face 3 respectively near the anterior angle γ 2 of the anterior angle γ 1 of the land portion 14 on the part of second jiao of sword 11 and end face 3.

Thereby strengthening section 15 is established anterior angle than the thickness of the little increase of the angle of other parts blade tip like this, and the edge strength of this part is improved.

Here, between the strengthening section of the first long sword 8 and the second long sword 9 or strengthening section beyond part between first, second anterior angle can equate, also can be respectively different angles.

The changeable blade 101 of present embodiment constitutes as described above, below with reference to Figure 12, Figure 13, Figure 14 the slotting cutter 20a that several pieces changeable blades 101 are housed is described.

Slotting cutter 20a is cutter body 21 cancellation blade mount pad 31a, the 31b from the slotting cutter 20 of embodiment 1, and replaces that changeable blades 1 are installed in blade mount pad 24a on the leading section of being located at

cutter body

21,24b is last and formation with the changeable blade 101 of present embodiment.

On the blade mount pad 24a of one of cutter body 21 side, above-mentioned changeable blade 101 with the second long sword 9 as the front sword, be installed with side-prominently from the front end face 21a forward end of cutter body 21, with this as main blade 101A.On the opposing party's blade mount pad 24b, changeable blade 101 with the first short sword 6 as the front sword, be installed with side-prominently from the front end face 21a forward end of cutter body 21, with it (here as auxiliary blade 101B, the main blade 101A of the slotting cutter 20a of present embodiment and the configuration of auxiliary blade 101B such as Figure 12, Figure 13, shown in Figure 14, the same substantially with the configuration of main blade 1A, the auxiliary blade 1B of the slotting cutter 20 of embodiment 1).

In this configuration structure, on the sword of front, be positioned at all sides of cutter as the strengthening section 15 of the second long sword 9 of the front sword of main blade 101A.Strengthening section 15 as the first long sword 8 of auxiliary blade 101B peripheral edge is positioned at cutter butt side on peripheral edge.

The changeable blade 101 and the slotting cutter 20a of present embodiment constitute as described above, thus the same with changeable blade 1 and the slotting cutter 20 of embodiment 1, can cut workpiece.

No matter the cutting edge of that a kind of blade 101A, 101B damaged or worn out situation under, change same changeable blade 101 and get final product.

Here, in the existing slotting cutter, on the peripheral edge of each changeable blade, when cutter body when rotation rotates, part (becoming the part of two-edged lobe) that the rotary track of the peripheral edge of 2 blades coincides and superposed part (becoming the part of single-blade lobe) not can appear on each cutting edge.And the part that becomes the single-blade lobe on the cutting edge is compared with the part that becomes the two-edged lobe, and the cutting resistance of bearing when workpiece is cut is damaged greatly and easily.

With the slotting cutter 20a of present embodiment in various cutting operations, do not overlap with track as the first short sword 6 of main blade 101A peripheral edge as the cutter butt side part of the first long sword 8 of auxiliary blade 101B peripheral edge, this part is cut workpiece as the single-blade lobe.On part in addition, the peripheral edge of two blades is cut workpiece as the two-edged lobe, is formed with strengthening section 15 on the part that becomes the single-blade lobe of these two blades, can guarantee the edge strength of this part.Other parts of two blades can not limit the shape of cutting edge, so this part can be set as the cutting edge shape of paying attention to sharpness, can reduce the reduction degree of sharpness.

Changeable blade 101 and slotting cutter 20a according to this structure, can be on the peripheral edge of each blade 101, strengthening section 15 is located on the part of single-blade lobe, and guarantee the intensity of cutting edge, and the cutting edge shape that becomes the part of two-edged lobe can be set as the cutting edge shape of paying attention to sharpness, therefore, not only can guarantee changeable blade edge strength, but also can reduce the reduction degree of sharpness.

(embodiment 4)

Below, according to Figure 15, Figure 16, Figure 17 embodiments of the invention 4 being illustrated, the same with the foregoing description or identical part prosign omits its explanation.Figure 15 is the side view of the replaceable blade chip slotting cutter of embodiment 4, and Figure 16 is the C2 direction side view of slotting cutter shown in Figure 15, and Figure 17 is the D2 direction side view of slotting cutter shown in Figure 15.

The replaceable blade chip slotting cutter 30 of Figure 15, Figure 16, embodiment 4 shown in Figure 17 has the structure the same with the replaceable blade chip slotting cutter 20 of the foregoing description 1, is not use changeable blade 1 and slotting cutter that changeable blade 101 of the present invention is installed.That is, be provided with at the leading section of cutter body 21 and be cut into section and be fan-shaped 2

grooves

22,23, these 2 grooves are in opposite directions with respect to the rotation O that constitutes its pivot substantially.In front end one side of each

groove

22,23, on the face of direction of rotation, being formed with

blade mount pad

24a, 24b, main blade 101A and auxiliary blade 101B are installed respectively.The configuration structure of these blades 101A, 101B is the same with above-mentioned embodiment 3.

And, also in the groove 22 of a side, be provided with blade mount pad 31a, the above-mentioned changeable blade 101 as the 3rd blade 101C is installed in the butt side of main blade 101A.The 3rd blade 101C with the second long sword 9 as peripheral edge, outstanding from the outer peripheral face of cutter body 21 to radial outside, be positioned on the position substantially parallel with rotation O, the second short sword 7 is disposed towards front end one side.

In this configuration structure, be positioned at peripheral edge front end one side of fixing a cutting tool as the strengthening section 15 of the second long sword 9 of the peripheral edge of the 3rd blade 101C.

This second long sword 9 disposes than the first long sword 8 more close butt sides, so as to clip cutter body 21 rotation O, and the rotational trajectory of the first long sword 8 that is in the peripheral edge of locational in opposite directions formation auxiliary blade 101B coincide.

In addition, in the groove 23 of opposite side, be provided with blade mount pad 31b in the butt side of auxiliary blade 1B, above-mentioned changeable blade 101 is installed on this mount pad as four blade sheet 101D.This four blade sheet 101D is outstanding to radial outside from the outside of cutter body 21 as peripheral edge with the first long sword 8, is positioned at the position substantially parallel with rotation O, and the first short sword 6 is disposed towards front.In this configuration structure, be positioned at the cutter butt side of peripheral edge as the strengthening section 15 of the first long sword 8 of four blade sheet 101D peripheral edge.

These first long sword, 8 to the second long sword 9 more close butt sides configurations, so as to clip cutter body 21 rotation O, overlap with the rotary track of the second long sword 9 of locational in opposite directions formation the 3rd blade 101C peripheral edge.

Here, the configuration of blade 1A, the 1B of the slotting cutter 20 of the configuration of blade 101A, the 101B of the slotting cutter 30 of present embodiment, 101C, 101D and embodiment 1,1C, 1D is the same substantially.

Not necessarily 4 of the configuration quantity of blade 101, also configurable more than 3 or 5.

When this slotting cutter 30 is used for various cutting operation, the cutter butt side that auxiliary blade 101B go up to constitute the first long sword 8 that the cutter butt side part of the first long sword 8 of peripheral edge, cutter front part that the 3rd blade 101C goes up the second long sword 9 that constitutes peripheral edge and four blade sheet 101D go up the formation peripheral edge does not partly overlap with the track of the peripheral edge of other blades, and this part cuts workpiece as the single-blade lobe respectively.On the peripheral edge of each blade, part is in addition cut workpiece as two sword lobes.

Here, be formed with strengthening section 15 on the part that becomes the single-blade lobe on each blade, can guarantee the intensity of this part cutting edge.And, the cutting edge shape of other parts on each blade is not limited, so this part is made the cutting edge shape of paying attention to sharpness, can reduce the reduction degree of sharpness.

Slotting cutter 30 according to present embodiment 4, can be on the peripheral edge of each changeable blade 101, strengthening section 15 is located on the part that becomes the single-blade lobe, guarantee the reinforcement of cutting edge, and on the part that becomes the two-edged lobe, the shape of cutting edge made the shape of paying attention to sharpness, therefore, the edge strength of changeable blade can be guaranteed, but also the reduction degree of sharpness can be reduced.

(embodiment 5)

Below, other example of changeable blade of the present invention as embodiment 5, is illustrated according to Figure 18, describe with prosign with the same or identical part of changeable blade of the various embodiments described above.Figure 18 (a) is the vertical view of the changeable blade of present embodiment, Figure 18 (b) is the E2 direction side view of changeable blade shown in Figure 18 (a), Figure 18 (c) is the F2 direction side view of changeable blade shown in Figure 18 (a), and Figure 18 (d) is the G2 direction side view of changeable blade shown in Figure 18 (a).

It is tabular that the changeable blade of embodiment 5 shown in Figure 180 (below be also referred to as blade) 102 roughly is quadrangle, and bottom surface 2 end face 41 in opposite directions that constitutes bearing-surface from first short sword 6 one sides towards in opposite directions second short sword 7 one sides, with bottom surface 2 between distance diminishingly tilt and form plane, so the first long sword 8 and the second long sword 9 also form from the linearity cutting edge of the first weak point sword, 6 one side direction, the second weak point sword, 7 lopsidedness.Therefore, the second short sword 7 from the bottom surface 2 distance minimum.

The inserting hole 5 that connects end face 41, bottom surface 2 with the vertical substantially direction in bottom surface 2 on bore a hole.Perhaps, also can on direction, bore a hole perpendicular to end face 41.

Certainly, these changeable blades 102 also can be in the part near the 4th jiao of sword 13 of the first long sword 8, and the part near the 2nd jiao of sword 11 that reaches the second long sword 9 is established strengthening section 15.

Under situation about being installed in this blade 102 replacement blades 101 on the above-mentioned slotting cutter 30 (20), if in the radial rake of each cutting edge that does not change each blade 102 with axially install under the condition of top rake, then can increase

blade mount pad

24a, 24b, the 31a at the blade back side, the thickness of 31b, can improve the edge strength of cutter body 21.On main blade 102A shown in Figure 19 and the 3rd blade 102C shown in Figure 20, can thicken

blade mount pad

24a, 31a thickness in second short sword 7 one sides.

In the posture of the bearing-surface that does not change blade 102 or 101 (bottom surface 2) and be installed under the situation on the blade mount pad, as shown in figure 21, be positioned on the auxiliary blade 102B and four blade sheet 102D of front end one side at the first short sword 6, axial top rake can be increased, the sharpness of periphery cutting edge can be improved as the first long sword 8 of each peripheral edge.

Variation as the blade 102 of embodiment 5 also can have structure shown in Figure 22.Figure 22 (a) is the vertical view of the changeable blade of present embodiment, Figure 22 (b) is the H2 direction side view of the changeable blade shown in Figure 22 (a), Figure 22 (c) is the I2 direction side view of changeable blade shown in Figure 22 (a), Figure 22 (d) is the J2 direction side view of changeable blade shown in Figure 22 (a), and Figure 22 (e) is the K2 direction side view of changeable blade shown in Figure 22 (a).

It is tabular that the changeable blade 103 of variation shown in Figure 22 roughly is quadrangle, form helicoids with the bottom surface 2 that constitutes bearing-surface end face 44 in opposite directions, thus first short sword 6, second short sword 7, first long sword 8, the second long sword 9 respectively the angle sword from an end of angle sword towards the other end, and the distance of bottom surface 2 form linearity cutting edge with arbitrarily angled inclination with gradually changing.

The inserting hole 5 that connects bottom surface 44, bottom surface 2 is bored a hole on the direction that is basically perpendicular to bottom surface 2.Or, also can on the direction vertical, bore a hole with end face 44.

If adopt this structure, can suitable radial rake and axial top rake have been established according to the installation site and the posture of each cutting edge.

The blade 101,102,103 of the foregoing description 3 and embodiment 5, variation also can be provided with chip-breaker on each

end face

3,41,44.

Two sword lobe blades 101,101 (102,102; 103, each front sword 103) is also configurable at core up or on the core position down.

On the blade 101,102,103 of embodiment 3 and embodiment 5, variation, the angle that is first, the 2nd and the 3rd jiao of

sword

10,11,12 of acute angle can be same angle, also can be different angles.

On each changeable blade 101,102,103 of the foregoing description 3 and embodiment 5, variation, each

long sword

8,9 and

short sword

end face

3,41,44 also can be convex surface or concave curved surface.

Changeable blade of the present invention is not limited to and is contained on the slotting cutter 30, also can be installed on the various cutting tools such as the commentaries on classics sharpener tool of other kinds and rotary cut cutter.

(embodiment 6)

Below, according to Figure 23 and Figure 24 the embodiment of the invention 6 is described, with the foregoing description 4 the same or identical parts, omit its explanation.Figure 23 is the vertical view of the changeable blade of embodiment 6, the side view of the replaceable blade chip slotting cutter of Figure 24 embodiment 6.

Changeable blade 104 shown in Figure 23 is at the changeable blade that is formed with the assisted machining sword 97 that tilts with respect to other parts on the changeable blade 101 of embodiment shown in Figure 10 3, on the end that comprises third angle sword 12 of the second long sword 9, so as along with to third angle sword 12 near and retreat to the inboard of end face 3.Assisted machining sword 97 is with respect to other part cant angle theta angles of the second long sword 9 (for example θ=5 °).

The replaceable blade chip slotting cutter 30a of embodiment 6 has the structure same with the replaceable blade chip slotting cutter 30 of the foregoing description 4, and has disposed blade 104 and replace blades 101.Leading section at cutter body 21 is provided with 2

grooves

22,23, and this groove is identical with respect to the rotation O that constitutes the cutter body pivot substantially, and its section is cut into roughly fan shape.In the front of each

groove

22,23, on the face of direction of rotation, be formed with

blade mount pad

24a, 24b, main blade 104A, auxiliary blade 104B are installed respectively.The configuration structure of these blades 104A, 104B is the same with the configuration structure of blade 101A, the 101B of the foregoing description 4.

In above-mentioned configuration structure, the assisted machining blade 97 on the second long sword 9 of blade 104A is also side-prominent to the front end one of cutter body 21 than other parts of the second long sword 9.In addition, the second long sword 9 of blade 104B is positioned at all sides of cutter body 21, can not be in the state of shear action.

In a side groove 22, also be formed with blade mount pad 31a in the butt side of main blade 104A, above-mentioned blade 104 is installed with as the 3rd blade 104c.The 3rd blade 104c with the second long sword 9 as peripheral edge, outstanding from the outer peripheral face of cutter body 21 towards radial outside, be positioned on the position substantially parallel with rotation O, the second short sword 7 is disposed towards front end one side.In this configuration structure, be formed at the assisted machining sword 97 on the 3rd blade 104c is kept out of the way cutter body 21 with respect to other parts of the second long sword 9 interior all sides.

In the opposing party's groove 23, also be formed with blade mount pad 31b at the radicle of auxiliary blade 104B, above-mentioned changeable blade 104 is installed on this mount pad as four blade sheet 104D.This four blade sheet 104D, gives prominence to towards radial outside from the outer peripheral face of cutter body 21 as peripheral edge with the first long sword 8, is positioned on the position substantially parallel with rotation O, and the first short sword 6 is disposed towards front end one side.In this configuration structure, the second long sword 9 of blade 104D is positioned at all sides of cutter body 21, can not be in the position of shear action.

According to the slotting cutter 30a of present embodiment 4, the auxiliary blade 97 of the blade 104A of changeable blade 104 can be used for smart cutting, the assisted machining sword on other blades 104B, 104C, the 104D does not play shear action to workpiece.

Like this, on slotting cutter 30a, changeable blade 104 is except the situation that the second long sword is used as the front sword, all can prevent the progress of the wearing and tearing of assisted machining sword 97, so can guarantee the sharpness of assisted machining sword 97, when assisted machining sword 97 is carried out fine finishining as the front sword to workpiece, can obtain good polished surface.

On the blade 104D of the butt side of being positioned at of cutter body 21 because peripheral edge system uses the first long sword 8 that does not form auxiliary blade 97, so on the second long sword 9 formation assisted machining sword 97, and can guarantee the maximum depth of cut S of changeable type cutting tool.

The configuration quantity of blade 104 can be not necessarily 4, also can dispose more than 3 or 5.

In the foregoing description 4, changeable blade 104 is to form assisted machining sword 97 and constitute on the second long sword 9 of the changeable blade 101 of embodiment shown in Figure 10 3, but be not limited to this structure, for example also can on the second long sword 9 of the either party in changeable blade 102 or 103, form assisted machining sword 97.And changeable blade 104 is not limited to and is contained on the slotting cutter 30a, also can be contained on other slotting cutters.

(embodiment 7)

Below, other example of changeable blade of the present invention as embodiment 7, is described according to Figure 25, describe with prosign with the changeable blade 101 the same or identical parts of embodiment 3.Figure 25 is the sectional drawing of the section configuration of expression present embodiment changeable blade each several part, Figure 25 (a) is the sectional drawing of L-L line section of the changeable blade that is equivalent to embodiment 3 of present embodiment, and Figure 25 (b) is the sectional drawing of M-M line section that is equivalent to the changeable blade of embodiment 3.

The changeable blade of embodiment 7 shown in Figure 25 (below be also referred to as blade) 105 is basic identical with the shape of changeable blade shown in Figure 10 101, and each cutting edge has been carried out the rounding honing.

Different with changeable blade 101 is, is not that it is little to establish than other parts the anterior angle of the strengthening section 15 of first, second

long sword

8,9, but is set as following structure.

That is to say, shown in the sectional drawing of Figure 25 (a), the strengthening section 15 of the first long sword 8 is to constitute like this, promptly establishes the radius of curvature R 1 near the blade tip of the part of the 4th jiao of sword 13 of the first long sword 8 than the radius of curvature R 2 (with reference to Figure 25 (b)) of the blade tip of other parts of the first long sword 8 greatly.Equally, the strengthening section 15 of the second long sword 9 is to constitute like this, promptly establishes the radius of curvature R 1 near the blade tip of the part of second jiao of sword 11 of the second long sword 9 to such an extent that compare the radius of curvature R 2 big (not shown) of blade tip of the other parts of the second long sword 9.

Strengthening section 15 is by establishing the radius of curvature of blade tip to such an extent that than other parts the edge strength of this part is improved like this.

Here, the radius of curvature R 2 between the part beyond radius of curvature R 1 between the strengthening section 15 of the first long sword 8 and the second long sword 9 or the strengthening section 15 can be set as equal, also can be set as the radius of curvature that has nothing in common with each other.

(embodiment 8)

Below, other example of changeable blade of the present invention as embodiment 8, is described according to Figure 26, illustrate with prosign with the changeable blade 101 the same or identical parts of embodiment 3.Figure 26 is the sectional drawing of the section configuration of expression present embodiment changeable blade each several part, Figure 26 (a) is the disconnected sectional drawing of L-L line of the changeable blade that is equivalent to embodiment 3 of present embodiment changeable blade, and Figure 26 (b) is the disconnected sectional drawing of changeable blade M-M line that is equivalent to embodiment 3.

The changeable blade of embodiment 8 shown in Figure 26 (below be also referred to as blade) the 106th, the basic the same changeable blade of shape of shape and changeable blade 101 shown in Figure 10.

long sword

8,9, but is set as following structure.

That is to say, shown in the sectional drawing of Figure 26 (a), the strengthening section 15 of the first long sword 8 is to constitute like this, promptly on the first long sword 8, will establish widelyer near the width W 1 of the land portion 14 of the part of the 4th jiao of sword 13 than the width W 2 (with reference to Figure 26 (b)) of the land portion 14 of first long sword 8 other parts.Equally, on the second long sword 9, strengthening section 15 also is to constitute like this, establish than the width W 2 wide (not shown) of the land portion 14 of other parts of the second long sword 9 near the width W 1 of the land portion 14 of the part of second jiao of sword 11.

Strengthening section 15 is by establishing the width W 1 of land portion 14 to such an extent that than other parts wide the edge strength of this part is improved like this.

Here, on the first long sword 8 and the second long sword 9, the width W 1 of the land portion 14 of each strengthening section 15, or the width W 2 of the land portion 14 of the part except strengthening section 15 can be same width, also can be different separately width.

In the blade 102,103,104 of the foregoing description 5, embodiment 6, represented that the strengthening section 15 same structures of the changeable blade 101 shown in usefulness and the embodiment 3 form the example of strengthening section 15, but be not limited to this structure, the structure of strengthening section 15 can adopt any structure in the changeable blade 101,105,106 shown in embodiment 3, embodiment 7, the embodiment 8, in addition, also can be the strengthening section that these textural associations are got up.

The present invention is not limited to the various embodiments described above, also comprises the various variation that the foregoing description is combined.

Claims

1. changeable blade, it is characterized in that: it is tabular that blade shapes roughly is quadrangle, and the angle of 2 angle swords on adjacent one side of a face is below 90 °, and 2 seamed edges that comprise a side in opposite directions of these angle swords are respectively made uneven cutting edge,

The angle of an angle sword in 2 angle swords of the opposing party of an above-mentioned face is below 90 °, with this angle sword and the cutting edge of one of angle sword that comprises an above-mentioned side as long sword,

Be formed with the assisted machining sword on the end of an angle sword in the angle sword that includes an above-mentioned side on this long sword, this assisted machining sword along with to this angle sword near and tilt with respect to other parts to the inboard of an above-mentioned face with retreating.

2. changeable blade as claimed in claim 1 is characterized in that: 2 seamed edges of the opposing party of an above-mentioned face are made uneven cutting edge.

3. changeable blade as claimed in claim 1 is characterized in that: the non-parallel cutting edge of above-mentioned 2 couple in opposite directions tilts, so that from one end to the other side gradually change respectively apart from the distance with above-mentioned face bearing-surface in opposite directions.

4. changeable blade, it is characterized in that: it is tabular that blade shapes roughly is quadrangle, and the angle of 2 angle swords of an adjacent side of a face is below 90 °, and 2 seamed edges that comprise a side in opposite directions of these angle swords are respectively made uneven cutting edge,

These cutting edges are as long sword, and 2 cutting edges in opposite directions in addition are as short sword,

On above-mentioned long sword, the strengthening section that each improves than other parts as edge strength near the part of the opposing party's angle sword.

5. changeable blade as claimed in claim 4 is characterized in that: on above-mentioned long sword, above-mentioned strengthening section is by anterior angle is constituted than the little of other parts of above-mentioned long sword.

6. changeable blade as claimed in claim 4 is characterized in that: carried out the rounding grinding on above-mentioned each cutting edge, above-mentioned strengthening section is by the radius of curvature of blade tip being established to such an extent that constitute than the big of other parts of above-mentioned long sword.

7. changeable blade as claimed in claim 4 is characterized in that: on an above-mentioned face, be formed with the land portion that is connected with above-mentioned each cutting edge,

Above-mentioned strengthening section is by establishing the width of above-mentioned land portion to such an extent that constitute than other parts of above-mentioned long sword are wide.

8. changeable blade as claimed in claim 4 is characterized in that: one of 2 angle swords of the opposing party of an above-mentioned face have the angle below 90 °,

Comprising on the long sword of this angle sword, on the end of one of angle sword that comprises an above-mentioned side, be formed with the assisted machining sword, this assisted machining sword along with to this angle sword near and tilt with respect to other parts to the inboard of an above-mentioned face with retreating.

9. changeable type cutting tool, the front end of this cutter body are equipped with cutting edge several pieces changeable blades of disposing of forward end one respectively side-prominently, it is characterized in that:

Above-mentioned several pieces changeable blades are the same with the described changeable blade of claim 1, and above-mentioned several pieces changeable blades are that 2 angle swords of an above-mentioned adjacent side dispose highlightedly to the front end outer circumferential side of cutter body respectively.

10. changeable type cutting tool as claimed in claim 9 is characterized in that: 1 above-mentioned angle sword to the outstanding changeable blade of the front end outer circumferential side of cutter body be with from this angle sword to cutting edge that the radially inner side of cutter body extends as the front sword, always extend to the rotation of cutter body till.

11. changeable type cutting tool as claimed in claim 9, it is characterized in that: with 2 non-parallel cutting edges of above-mentioned changeable blade one side as long sword, with 2 non-parallel cutting edges of the opposing party as short sword, in outstanding several pieces changeable blades of the front of cutter body one with long sword as the front sword, will lack sword as peripheral edge, other then will lack sword as the front sword, long sword is separately positioned on the front end of cutter body as peripheral edge.

12. changeable type cutting tool as claimed in claim 11, it is characterized in that: on above-mentioned cutter body, the butt side of above-mentioned 1 changeable blade is equipped with the same changeable blade of long sword as peripheral edge, make cutter body when rotation rotates, the rotational trajectory of each peripheral edge overlaps.

13. a changeable type cutting tool, the front end of this cutter body are equipped with cutting edge several pieces changeable blades of disposing of forward end one respectively, it is characterized in that side-prominently:

Above-mentioned several pieces changeable blades are the described changeable blades of claim 1,

A slice in several pieces changeable blades with long sword with above-mentioned assisted machining sword as the front sword, to lack sword as peripheral edge, and, long sword with above-mentioned assisted machining sword is configuration like this, being above-mentioned assisted machining sword is configured on cutter front end one side more highlightedly than other parts of above-mentioned long sword, other blades are then to lack sword as the front sword, dispose as peripheral edge with long sword

On above-mentioned cutter body, dispose the same changeable blade of above-mentioned long sword in the butt side of above-mentioned changeable blade as peripheral edge, make above-mentioned cutter body when rotation rotates, the rotational trajectory of above-mentioned each peripheral edge overlaps,

Other above-mentioned changeable blade is configuration like this, promptly, to have under the situation of long sword as peripheral edge of above-mentioned assisted machining sword, make above-mentioned assisted machining sword than in the more close cutter of other parts of above-mentioned long sword Monday side the position so that workpiece is not played shear action.

14. a changeable type cutting tool, the front end of this cutter body are equipped with cutting edge several pieces changeable blades of disposing of forward end one respectively, it is characterized in that side-prominently:

Above-mentioned several pieces changeable blades are the described changeable blades of claim 4,

A slice in several pieces changeable blades with long sword as the front sword, dispose as peripheral edge to lack sword,

Other changeable blades then with lack sword as the front sword, with long sword as peripheral edge, and be above-mentioned strengthening section to be positioned on the above-mentioned long sword with the rotational trajectory of the peripheral edge of an above-mentioned changeable blade do not dispose on the superposed part.

15. changeable type cutting tool as claimed in claim 14 is characterized in that:

On above-mentioned cutter body, be equipped with the same changeable blade of long sword in the butt side of above-mentioned a slice changeable blade as peripheral edge, so that make cutter body when rotation rotates, the rotational trajectory of above-mentioned each peripheral edge overlaps,

And these changeable blades are configured to make above-mentioned strengthening section to be positioned on above-mentioned each peripheral edge and rotational trajectories above-mentioned other peripheral edge not on the superposed part respectively.

16. a changeable type cutting tool, the front end of this cutter body are equipped with cutting edge several pieces changeable blades of disposing of forward end one respectively, it is characterized in that side-prominently:

Above-mentioned several pieces changeable blades are the same with the described changeable blade of claim 8,

A slice in several pieces changeable blades with long sword with above-mentioned assisted machining sword as the front sword, to lack sword as peripheral edge, and, long sword with above-mentioned assisted machining sword is that above-mentioned assisted machining sword other parts than above-mentioned long sword are configured on front end one side of cutter more highlightedly, other changeable blades are then to lack sword as the front sword, dispose as peripheral edge with long sword

On above-mentioned cutter body, dispose and with the same changeable blade of above-mentioned long sword in the butt side of above-mentioned changeable blade as peripheral edge, so that make above-mentioned cutter body when rotation rotates, the rotational trajectory of above-mentioned each peripheral edge overlaps

And these changeable blades are configured to make above-mentioned strengthening section to be positioned on above-mentioned each peripheral edge and the rotational trajectory of above-mentioned other peripheral edge not on the superposed part,

Other blades are like this configurations, promptly under with the situation of long sword as peripheral edge with above-mentioned assisted machining sword, make above-mentioned assisted machining sword be positioned at all sides of the more close cutter of other parts than above-mentioned long sword, so that workpiece is not played shear action.