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71. 发明专利

JPH0860201A CARBURIZED CARBIDE POWDER MIXTURE BASED ON TUNGSTEN AND CARBURIZED CARBIDE PRODUCT PRODUCED THEREFROM 失效
公开(公告)号：JPH0860201A
公开(公告)日：1996-03-05
申请号：JP18226695
申请日：1995-06-27
申请人： ISCAR LTD
发明人： IRAN GABISHIYU
IPC分类号： C01B31/30 , B22F1/00 , C22C1/05 , C22C29/02 , C22C29/08
摘要： PURPOSE: To obtain a sinterable powder mixture capable of forming an inexpensive and high-quality W-based carbide sintered body by specifying a composition comprising WC, an iron group metal binder, Ta (Nb) oxide, and powdered elemental C. CONSTITUTION: This powder mixture has a composition comprising, by weight, >=70% of WC, about 2-15% of iron group metal binder, about 1-8% of Ta (Nb) oxide, powdered elemental C, and optionally about

72. 发明专利

JPH07266120A REPLACEABLE CUTTING IN SERT 失效
公开(公告)号：JPH07266120A
公开(公告)日：1995-10-17
申请号：JP7984295
申请日：1995-03-10
申请人： ISCAR LTD
发明人： YURI MEN , AMIIRU SATORAN
IPC分类号： B23C5/20 , B23C5/02 , B23C5/22
摘要： PURPOSE: To provide an exchangeble cutting insert capable of cutting each recessed part having a wall perpendicular to one another, by mounting each secondary cutting edge in such manner that it does not project beyond its associated main cutting edge in the direction of a rake surface. CONSTITUTION: Each recessed valley part 7 is formed on a rake surface 2 adjacent to an insert corner 6 and united with a right end of each main cutting edge 5. The valley part 7 has a bottom surface 8 intersecting a secondary rake surface 9 on a secondary cutting edge 10. A degree of displacement of the secondary cutting edge 10 toward a bottom edge 4 to the main. cutting edge 5 and a degree of the outward displacement to the main rake surface to which the secondary cutting edge 10 is adjacent are determined so that each secondary cutting edge 10 does not project beyond its associated main cutting edge 5 when an insert is viewed from an upper portion in the direction of the rake surface 2.

73. 发明专利

JPH07171702A METAL CUTTING TOOL 失效
公开(公告)号：JPH07171702A
公开(公告)日：1995-07-11
申请号：JP20443094
申请日：1994-08-05
申请人： ISCAR LTD
发明人： MOTEI OCHIYAYON
IPC分类号： B23B27/16 , B23C5/10 , B23C5/22
摘要： PURPOSE: To fasten and support the clamping part of a screw by ensuring the contact between clamping surfaces of the side walls of a tail part and of the side walls of a pocket. CONSTITUTION: A wedge effect is generated between the oblique part 14 of a tail part 9 and the inclined part 24 of a pocket 20 by the influence of a clamping force and, particularly, its horizontal component, and reactions R1 and R2 are generated between them in the contact part between the inclined part 24 and the oblique part 14. The vertical components RV1 and RV2 of the reactions R1 and R2 press the bottom surface of the tail part 9 to a pocket bottom surface 22, and the horizontal components RH1 and RH2 press the oblique part 14 of the tail part 9 to the inclined part 24 of the pocket 20. Accordingly, the tail part 9 is effectively doubly clamped horizontally and vertically in the pocket 20 of a tool holder, and the reliable firm mounting of an insert tool within the tool holder can be ensured.

74. 发明专利

JPH0754030A PREPARATION OF STEEL 失效
公开(公告)号：JPH0754030A
公开(公告)日：1995-02-28
申请号：JP13459494
申请日：1994-06-16
申请人： ISCAR LTD
发明人： RUISU YOHANESU FUURII
IPC分类号： C21B13/12 , C21C5/52 , C21C5/56

75. 发明专利

JPH06190623A CUTTING INSERT 失效
公开(公告)号：JPH06190623A
公开(公告)日：1994-07-12
申请号：JP23926593
申请日：1993-09-01
申请人： ISCAR LTD
发明人： SATRAN AMIR , SMILOVICI CAROL
IPC分类号： B23C5/20 , B23C5/10 , B23C5/22 , C23G5/00
摘要： PURPOSE: To improve mainly the mechanical strength of cutting insert by a method wherein three successive component cutting edges are disposed at the main cut edge of the cutting insert used in a rotary type milling cutter tool and their lengths and a position relation between both front and rear ends are respectively specified. CONSTITUTION: First - third continuous component cut edges 5a-5c are arranged at the main cutting edge 5 of a cutting insert 1. A second cutting edge 5b is coextensive with a bore and greater length than the length of each of the first and third cutting edges 5a and 5c. With respect to the axis of rotation of a cutter tool, its axial rake angle is substantially less than the axial rake angles defined respectively to the first and third cutting edges 5a and 5c. Further, the rear ends of the first and second cutting edges 5a and 5b are annexed to the front ends of the subsequent second and third cutting edges 5b and 5c through intermediate edges 6 and 7 and the intermediate edges 6 and 7 are pointed in the direction of a base edge 3. Meanwhile, respective normals passing through the rear ends of the first and second cutting edges 5a and 5b to the axis of rotation are caused to cross the second and third cutting edges 5b and 5c.

76. 发明专利

JPH06170621A DEVICE FOR FIXING AND RELEASING TOOL 失效
公开(公告)号：JPH06170621A
公开(公告)日：1994-06-21
申请号：JP21210293
申请日：1993-08-05
申请人： ISCAR LTD
发明人： SHIMON KOPERU , GIDEON DORORI
IPC分类号： B23B31/06 , B23B31/00 , B23Q11/00
摘要： PURPOSE: To perform rapid exchange of a tool by a method wherein when a tool holder is rotated in a first direction a tool fixing member held in a fixed state by a wrench head is unfastened and when it is rotated in a reverse direction the tool fixing member is tightened. CONSTITUTION: When a cutting tool 5 is separated away from a tool holder 1 after a wrench support arm 22 is slid and displaced to a most information position shown by a chain line a wrench head is lowered to a position to surround a fixing nut 4. A motor 15 is then rotated in a first direction and by rotating the tool holder 1 in the same direction the fixing nut 4 is unfastened and removal of the cutting tool 5 is allowed. After a fresh cutting tool 5 is arranged in a home position a wrench head 25 is positioned to surround the fixing nut 4, the motor 15 is rotated in an opposite direction, and the tool holder 1 is rotated in the same direction. This way performs fastening of the fixing nut 4 and fixes the cutting tool 5.

77. 发明专利

JPH0631522A CUTTER INSERTED TOOTH 失效
公开(公告)号：JPH0631522A
公开(公告)日：1994-02-08
申请号：JP14441193
申请日：1993-05-25
申请人： ISCAR LTD
发明人： AMIIRU SATORAN , KARORU SUMIROBICHI
IPC分类号： B23C5/10 , B23C5/20 , B23C5/22
摘要： PURPOSE: To enable milling of either positive and negative rake angles in the axial direction to be used by slanting the constituent cutting edges of each pair and their associated rake faces toward the bottom face and their common corner parts. CONSTITUTION: A milling cutter insert is provided with a first pair of adjacent cutting edges 10, 11 meeting at a first common insert corner part 15 and a second pair of adjacent cutting edges 12, 13 meeting at a second common insert corner part 16 diagonally located with respect to the first common insert corner part 15. The cutting edges 10, 11, 12, 13 constituting the respective pairs and their associated rake faces are slanted toward the bottom face and their common corner parts.

78. 发明专利

JPH068030A EXCHANGEABLE SUPER HARD METAL CUT INSERT 失效
公开(公告)号：JPH068030A
公开(公告)日：1994-01-18
申请号：JP11387793
申请日：1993-04-16
申请人： ISCAR LTD
发明人： AMIIRU SATORAN , KARORU SUMIROBICHI
IPC分类号： B23C5/20
摘要： PURPOSE: To form a smooth cutting surface by positioning successive component cutting edges on a curved envelope defined by the rotation of a generator about the rotation axis of a cutting insert. CONSTITUTION: A cutting edge in a cutting insert includes plural successive component cutting edges 17a-17c and intermediate cutting edges 19 located between the successive component cutting edges, wherein the trailing end of one component cutting edge is joined to the leading edge of the following component cutting edge through the intermediate edge 19 and the intermediate edge 19 is pointed from the trailing end of one component cutting edge toward the base edge 20. Further, the successive component cutting edges 17a-17c overlap during a cutting operation and are located on a curved envelope defined by the rotation of a generator about the rotational axis of the cutting insert. At this time, the generator is substantially coplanar with the rotational axis.

79. 发明专利

JPH03208504A CERAMIC GRINDING TOOL AND GRINDING METHOD 失效
公开(公告)号：JPH03208504A
公开(公告)日：1991-09-11
申请号：JP30284690
申请日：1990-11-09
申请人： ISCAR LTD
发明人： DEBITSUDO MOSUKOUITSUTSU , RIYUUBEN PORATO
IPC分类号： B23B27/14 , C04B35/10 , C04B35/111
摘要： PURPOSE: To cut a ferrous material, particularly cast iron, with a long life by hot-pressing aluminum nitride of 6-30 wt.% and balanced α-alumina, and containing no other material than inevitable trace elements in a ceramic cutting tool. CONSTITUTION: The composition of this ceramic cutting tool consists of aluminum nitride(AlN) of 6-30 wt.% and balanced α-alumina (Al2 O3 ), and inevitable trace elements other than those exist in the composition. The aluminum nitride of about 14 wt.% is actually optimum, and it is proved to be effective in machining nodular cast iron in particular. The thermal expansion coefficient of the aluminum nitride is relatively low, its thermal shock resistance is large, and these properties are the cause of an increase of the resistance against a crack and breakage and the extension of the whole tool life. AlN does not have the abrasion resistance of Al2 O3 , and a synthetic material containing AlN of about 50% is considered as insufficient for the abrasion resistance and tool life.

80. 发明专利

JPH03117503A CUTTING INSERT 失效
公开(公告)号：JPH03117503A
公开(公告)日：1991-05-20
申请号：JP25545590
申请日：1990-09-27
申请人： ISCAR LTD
发明人： JIEIKOBU FURIIDOMAN
IPC分类号： B23B27/04 , B23B27/16
摘要： PURPOSE: To keep the insert fastening force by directing a contact area between a first insert surface of a wedge-shaped body part of an insert and a first surface of a tool jaw to the middle of a contact area between a second insert surface and a second surface of the jaw which are longitudinally divided. CONSTITUTION: A rear end part 10 of a first insert surface 9 of a wedge-shaped body part of a cutting insert 1 is narrow, and a second insert surface 6 is divided into a recessed central area 6c and front and rear areas 6a, 6b. The insert 1 is pushed into a slot 16 of a tool holder blade 15, the first insert surface 9 is brought into contact with a longitudinal jaw 17 of a fastening jaw 19, and the front and rear surfaces 6a, 6c of the second insert surface 6 are brought into contact with a longitudinal jaw 18 of a fastening jaw 20 and forced in. At this time, the force F1 applied to the fastening jaw 19 is regulated to the medium between two fastening forces F2 , F3 applied to the fastening jaw 20 so that the fastening force can be strongly kept.

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