CN100556597C

CN100556597C - Milling cutter

Info

Publication number: CN100556597C
Application number: CNB2004800056980A
Authority: CN
Inventors: 张炳焊; 金棋宪; 智东龙; 赵文成; 金学规
Original assignee: Korloy Inc
Current assignee: Korloy Inc
Priority date: 2004-02-16
Filing date: 2004-12-01
Publication date: 2009-11-04
Anticipated expiration: 2024-12-01
Also published as: KR100635517B1; CN1756613A; KR20050081858A

Abstract

The purpose of this invention is to provide a kind of milling cutter that comprises cutting insert (120) and cutter hub (110), wherein this cutting insert has hexahedral shape, and on its opposite end, be provided with the first and second bite blades, this cutter hub is provided with a plurality of insert bases (112), cutting insert (120) be placed in wherein and in both direction any one direction be fixed thereon.Can cutting insert (120) be fixed on the relevant insert base (112) along preferential direction, all the angle blades or the major cutting edge that are arranged on like this on first and second cutting blades part of cutting insert may be used to processing work.Therefore, the present invention has prolonged the service life of cutting insert (120).

Description

Milling cutter

Technical field

Present invention relates in general to a kind of milling cutter, more specifically, relate to a kind of milling cutter that comprises cutting insert and cutter hub, this cutting insert has cube or rectangular shape, and on its opposite end, be provided with the first and second bite blades, this cutter hub is provided with a plurality of insert bases, cutting insert be placed in wherein and in both direction any one direction be fixed in wherein, thereby can cutting insert be fixed on the relevant insert base along either direction, all the angle blades or the major cutting edge that are arranged on like this on the first and second bite blades of cutting insert can be used for processing work, prolong the service life of cutting insert thus.

Background technology

Usually, cutting element can be used for the various workpiece of machining, for example cutting element is installed on the lathe, carries out cutting operation then and makes workpiece form the shape of expectation.

General, cutting element comprises having cutting insert (cutting insert) that mainly carries out the cutting blade of cutting operation and the cutter hub that supports this cutting insert.

There are two kinds of methods to use cutting element to come the cutting metal workpiece.In first method, use the workpiece of fixing cutting element cutting rotation.In the second approach, use the fixing workpiece of instrument cutting with cutting blade and rotation.

In milling method and the above-mentioned cutting process second kind is similar.Utilize milling cutter can carry out plane processing, side processing, groove processing, hole processing or the like.

Made much to make great efforts to reduce the resistance in the milling cutter mechanical processing process, thereby prolonged the service life of instrument and improve mechanical processing quality.

Yet, in the cutting insert of routine, even the bite blade is arranged on two opposite ends of cutting insert, because cutting insert is only to be installed on the cutter hub along a direction, so the bite blade has only the angle blade (corner blade) or the major cutting edge of part to be used for cutting workpiece.Therefore, exist a problem promptly to shorten the service life of cutting insert.

Summary of the invention

Therefore, designed the present invention at the problems referred to above that produce in the prior art, an object of the present invention is to provide a kind of milling cutter that comprises cutting insert and cutter hub, this cutting insert has cube or rectangular shape, and on its opposite end, be provided with the first and second bite blades, this cutter hub is provided with a plurality of insert bases, cutting insert is placed in wherein and is fixed thereon on any one direction in both direction, thereby can cutting insert be fixed on the relevant insert base along either direction, all the angle blades or the major cutting edge that are arranged on like this on the first and second bite blades of cutting insert can be used for processing work, prolong the service life of cutting insert thus.

Description of drawings

Fig. 1 is a decomposition diagram, and it shows according to the cutter hub of milling cutter of the present invention and cutting insert;

Fig. 2 shows the enlarged perspective of the cutting insert of Fig. 1; And

Fig. 3 shows the perspective view that the cutting insert with Fig. 2 is connected with the cutter hub of milling cutter.

The specific embodiment

The invention provides a kind of milling cutter, comprising: the cutter hub that is equipped with a plurality of insert bases (insert seat); And cutting insert, it has hexahedral shape, and embeds and be fixed on each insert base along any one direction in the both direction.

In addition, cutting insert has: the through hole from the upper surface of cutting insert to lower surface that forms in cutting insert; And the first and second cutting blade parts, it is of similar shape, and is separately positioned on first and second ends of cutting insert.

In addition, the insert base radially inwardly forms around the circumferential exterior surface of cutter hub, and separate each other at regular intervals, each insert base comprises first and second lock holes that form respectively on first and second inner surfaces of insert base, make cutting insert to be fixed on the insert base by lock-screw, lock-screw is fastened to after passing the through hole of cutting insert in first or second lock hole of insert base.

Each cutting insert has cube or rectangular shape.

Like this, milling cutter of the present invention comprises the milling cutter of cutting insert and cutter hub, this cutting insert has cube or rectangular shape, and on its opposite end, be provided with the first and second bite blades, this cutter hub is provided with a plurality of insert bases, cutting insert be installed in wherein and in both direction any one direction fix.Therefore, can cutting insert be fixed on the relevant insert base along either direction, all the angle blades or the major cutting edge that are arranged on like this on the first and second bite blades of cutting insert may be used to processing work.Thus, prolong the service life of cutting insert.

Below, with the milling cutter that is described in detail with reference to the attached drawings according to a preferred embodiment of the invention.

Fig. 1 is a decomposition diagram, and it shows according to the cutter hub of milling cutter of the present invention and cutting insert.Fig. 2 shows the enlarged perspective of the cutting insert of Fig. 1.

With reference to Fig. 1 and 2, milling cutter 100 of the present invention comprises cutter hub 110 and a plurality of cutting insert 120, and this cutting insert alternately is fixed on the cutter hub 110 along both direction.In other words, each cutting insert 120 can be fixed on the cutter hub 110 along a direction in the both direction.

At first, cutter hub is installed on the main shaft (not shown) of general lathe.Circumferential exterior surface around cutter hub 110 radially inwardly forms a plurality of insert bases 112, and separates each other at regular intervals.Each insert base 112 comprises respectively first and second lock hole 116a and the 116b that form on first and second inner surface 114a of insert base 112 and 114b.Each cutting insert 120 is securely fixed on the insert base 112 by lock-screw 118, and lock-screw is fastened to after the through hole that passes cutting insert 120 among the first or

second lock hole

116a or 116b of insert base 112.

Each cutting insert 120 has cube or rectangular shape.Upper surface 122 from cutting insert 120 in cutting insert 120 forms through hole 126 to lower surface 124.Cutting insert 120 has first and second identical shaped bite blade 128a and the 128b, and they are separately positioned on first and second ends of cutting insert 120.Lock-screw 118 passes the through hole 126 of each cutting insert 120.Preferably, the width of each cutting insert 120 (x), highly the ratio of (z) and length (y) is from 1: 1: 0.8 to 1: 1: 1.2.If the relative length of cutting insert 120 (y) just can not form through hole 126 so less than 0.8 in cutting insert 120.Equally, even formed through hole 126 in cutting insert 120, cutting insert 120 may be too fragile.If the length of cutting insert 120 (y) ratio is greater than 0.8, cost of material will increase so, the cutting insert 120 of smaller amounts must be fixed on the cutter hub 110, thereby stock-removing efficiency descend.

Each cutting insert 120 has the angle blade 130 of circular arch, and it is arranged on each angle of the first and second bite blade 128a and 128b.Between adjacent angle blade 130, major cutting edge 132 is set, so that make angle blade 130 gangs.Here, when utilizing the milling cutter cutting workpiece, at first be that a major cutting edge 132 contacts with workpiece, and processing work.Each major cutting edge 132 has the profile of smooth curved.That is, major cutting edge 132 is from the core bending to upper surface 122, lower surface 124, first side 134 and second side 136 of cutting insert 120 of the outward flange of the opposite end of cutting insert 120.The blade surface 140 that each major cutting edge 132 has flat blade surface 138 and tilts, they sequentially are arranged on the major cutting edge 132 towards the core of the first and second bite blade 128a and 128b.Preferably, utilize engraving or embossing, on the position near angle blade 130, just on the opposite end of cutting insert 120, form the mark of forming by continuous number 123, thereby distinguish angle blade 130 at the first and second bite blade 128a and 128b.The mark 123 that comprises numeral " 1 " to " 4 " is arranged on the first bite blade 128a and goes up position corresponding to the angle blade 130 of the first bite blade 128a.Similarly, the mark 123 that comprises numeral " 5 " to " 8 " is arranged on the second cutting portion 128b and goes up position corresponding to the angle blade 130 of the second bite blade 128b.

To be briefly described being connected of milling cutter cutting insert 120 with said structure and cutter hub below.

With reference to figure 3, at first, in order to connect cutting insert 120 and cutter hub 110, a cutting insert 120 is placed in the insert base 112 of cutter hub 110, make the upper surface 122 of cutting insert 120 or lower surface 124 the second lock hole 116b in the face of insert base 112.In other words, the second inner surface 114b of insert base 112 contacts with the upper surface 122 or the lower surface 124 of cutting insert 120.Then, the second lock hole 116b of insert base 112 accurately is communicated with the through hole 126 of cutting insert 120.In this case, lock-screw 118 is fastened among the second lock hole 116b after the lower surface 124 that passes cutting insert 120.

Like this, after being fixed on a cutting insert 120 on the insert base 112, another cutting insert 120 is placed in the adjacent insert base 112, makes the upper surface 122 of cutting insert 120 or lower surface 124 the first lock hole 116a in the face of insert base 112.Then, the first lock hole 116a of insert base 112 accurately is communicated with the through hole 126 of cutting insert 120.In this case, another lock-screw 118 is fastened among the first lock hole 116a after the lower surface 124 that passes cutting insert 120.

In said method, other cutting insert 120 sequentially holds and is fixed on remaining insert base 112.Then, the cutting insert 120 that is placed in arbitrary insert base 112 is arranged at an angle of 90 with respect to other cutting insert 120 that is placed in the adjacent insert base 112.Therefore, be placed in angle in the insert base 112 if the user changes each cutting insert 120, all angle blades 130 and the major cutting edge 132 on the first cutting blade part 128a of each cutting insert 120 may be used to processing work so.In the time of can not re-using them if all the angle blades 130 of the first cutting blade part 128a and major cutting edge 132 all become too passivation, the user can make the second bite blade 128b of cutting insert 120 face the direction of processing work by rotary cutting insert 120, and with aforesaid same procedure cutting insert 120 is fixed on the insert base 112 that links.

Industrial applicibility

As mentioned above, the invention provides a kind of milling cutter 100, it comprises the cutting insert 120 with cube or rectangular shape, and this cutting insert is provided with first and second bite blade 128a and the 128b that form respectively on its first and second end.Along any one direction in the both direction cutting insert 120 is embedded in the cutter hub 110, make the upper surface 122 of cutting insert or lower surface 124 contact with cutter hub 110, through hole 126 passes this cutting insert.Therefore, all angle blades 130 and the major cutting edge 132 on the first and second bite blade 128a and the 128b may be used to processing work.Therefore, the present invention has prolonged the service life of cutting insert 120, has satisfied user's needs.

In addition, on the first and second inner surface 114a of

cutter hub

110 and 114b, form first and second lock hole 116a and the 116b respectively.Therefore, the cutting insert 120 that is fixed on the cutter hub 110 can change 90 degree.Therefore, the present invention has prolonged the service life of cutting insert 120.

In addition, near the position each the angle blade 130 on the cutting insert 120 forms mark 123.This can make whether the user used before distinguishing each angle blade 130 or each major cutting edge 132.

Though described the preferred embodiments of the present invention for illustrative purposes, but it will be appreciated by those skilled in the art that, under the condition of disclosed scope and spirit of the present invention, various modifications, interpolation and replacement all are possible in not breaking away from as the claims of enclosing.

Claims

1. milling cutter comprises:

Be provided with the cutter hub of a plurality of insert bases; With

Cutting insert with hexahedral shape, it embeds and is fixed on each insert base along any one direction in the both direction,

Wherein the insert base radially inwardly forms around the circumferential exterior surface of cutter hub, and separate each other at regular intervals, each insert base comprises first and second lock holes that form respectively on first and second inner surfaces of insert base, make cutting insert be fixed on the insert base by lock-screw, lock-screw is fastened to after passing the through hole of cutting insert in first or second lock hole of insert base.

2. milling cutter as claimed in claim 1, wherein cutting insert comprises: the through hole from the upper surface of cutting insert to lower surface that forms in cutting insert; And the first and second bite blades, it is of similar shape, and is separately positioned on the first and second relative ends of cutting insert.

3. milling cutter as claimed in claim 2, wherein the first and second bite blades all comprise: the angle blade of circular arch, it is arranged on each angle of the first and second bite blades; And major cutting edge, it is arranged between the adjacent angle blade, thereby the angle blade is connected to each other.

4. milling cutter as claimed in claim 3, wherein major cutting edge from the outward flange of the opposite end of cutting insert respectively to the core bending of upper surface, lower surface, first side and second side of cutting insert.

5. milling cutter as claimed in claim 3, wherein each major cutting edge comprises the flat blade surface and the blade surface of inclination, they sequentially are arranged on the major cutting edge towards the core of the first and second bite blades.

6. milling cutter as claimed in claim 1, wherein cutting insert has cube shaped.

7. milling cutter as claimed in claim 1, wherein cutting insert has rectangular shape.

8. milling cutter as claimed in claim 7, wherein the width of cutting insert (x), highly the ratio of (z) and length (y) is from 1: 1: 0.8 to 1: 1: 1.2.