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1. 发明专利

JPH0523885B2 失效
公开(公告)号：JPH0523885B2
公开(公告)日：1993-04-06
申请号：JP24082986
申请日：1986-10-09
申请人： KOBE STEEL LTD
发明人： WAKIHIRA KOICHIRO , KATSUTA MICHITAKA , HINO MASAYASU , YAMAMOTO TADAO
IPC分类号： B23D77/00 , B23B51/02

2. 发明专利

JPS63318207A DRILL 失效
公开(公告)号：JPS63318207A
公开(公告)日：1988-12-27
申请号：JP15311987
申请日：1987-06-17
申请人： KOBE STEEL LTD
发明人： WAKIHIRA KOICHIRO , KATSUTA MICHITAKA , HINO MASAYASU , YAMAMOTO TADAO
IPC分类号： B23B51/00
摘要： PURPOSE:To enable accurate perforation by forming a sub-groove in such a way that a secondary cutting edge is positioned on the thick-wall part side of a drill from a straight line connecting the sub-groove side end of a main cutting edge and the end of outer periphery on the sub-groove side of a chisel edge. CONSTITUTION:A sub-groove 4 is formed in such a way that a ridge line which is the edge of a secondary cutting edge 1b is positioned on the thick-wall part 6 side of a drill 10 from a straight line connecting the points on each cutting edge line of the sub-groove side end of a main cutting edge 1a and the opposite sub-groove side end of a chisel edge 3. Thereupon, the drill 10 having thus formed end parts will have a fairly shorter chisel edge 3 than the chisel edge of a drill having no sub-groove 4, improving the biting property into a workpiece while making it hard to cause a walking phenomenon. Accordingly, the rotation center of the drill 10 can be effectively prevented from moving, reducing cutting resistance while improving a cutting property to carry out accurate perforation.

3. 发明专利

JPS5656339A MACHINING METHOD OF CHAMFER GRINDING FOR END FACE OF GEAR TOOTH 失效
公开(公告)号：JPS5656339A
公开(公告)日：1981-05-18
申请号：JP13063279
申请日：1979-10-08
申请人： KOBE STEEL LTD
发明人： YAMAMOTO TADAO , KUSAKABE YUUJI
IPC分类号： B23F19/10 , B23F19/12
摘要： PURPOSE:To perform the efficient work of chamfering the end face of a gear tooth, by machining the initial part of gear cutting with a screw-shaped grindstone of specfic trapezoidal tooth profile. CONSTITUTION:To a portion between neighboring teeth 2a, 2b of a gear cut ground gear 1, a generating gear cut initial part is newly applied by a screw-shaped grindstone 6 of trapezoidal tooth profile with a larger module than that of the gound gear 1 to perform the work of their chamfering. Here it is necessary to provide the condition that a normal circular pitch Pw of the grindstone 6 is 1.2-2 times the normal pitch PG of the ground gear 1, a gear groove center line L1 of the ground gear 1 is aligned to a generating center L2 of tooth profile of the grindstone 6 and the amount of addendum modification causing undercut is given to the grindstone 6. In this way, the machining work can be efficiently and highly accurately performed by an existing gear grinding machine and grindstone.

4. 发明专利

JPS5220495A HOB 失效
公开(公告)号：JPS5220495A
公开(公告)日：1977-02-16
申请号：JP9796175
申请日：1975-08-11
申请人： KOBE STEEL LTD
发明人： YAMAMOTO TADAO , YAMAGUCHI KATSUMI
IPC分类号： B23F21/16
摘要： PURPOSE:A long drum hob having high processing precision which can prevent a relief phenomenon of a cutting blade in an assembly hob with a very simple construction.

5. 发明专利

JPS5392966A MEGNETIC CONCENTRATING APPARATUS 失效
公开(公告)号：JPS5392966A
公开(公告)日：1978-08-15
申请号：JP757677
申请日：1977-01-25
申请人： KOBE STEEL LTD
发明人： TAKEDA KUNIO , TERUKINA JIROU , IMAI YUKIO , YAMAMOTO TADAO
IPC分类号： B03C1/02 , B03C1/26
摘要： PURPOSE:To prevent the phenomenon of hugging by providing an oscillating frame such that it is oscillable into contact with and away from an ore selection path and also providing the frame with fixed magnet rows on opposite sides of the selector path.

6. 发明专利

JPS5220496A HOB 失效
公开(公告)号：JPS5220496A
公开(公告)日：1977-02-16
申请号：JP9644575
申请日：1975-08-07
申请人： KOBE STEEL LTD
发明人： YAMAMOTO TADAO , SUEYASU MASAHARU , MORIGUCHI TAKUJI
IPC分类号： B23F21/16
摘要： PURPOSE:A multi-winding hob with a throw away type chip which is set up for easy processing even in case of projecting blade securing portions in spiral series and axially parallel.

7. 发明专利

JPS51142179A ENDMILL AND ITS PRODUCING METHOD 失效
公开(公告)号：JPS51142179A
公开(公告)日：1976-12-07
申请号：JP6550775
申请日：1975-05-31
申请人： KOBE STEEL LTD
发明人： MOTONISHI SUGURU , YAMAZAKI SATOFUMI , YAMAMOTO TADAO
IPC分类号： B23C5/10 , B23Q1/00
摘要： PURPOSE:To make it possible to remove a fine powder of chips from a cutting edge of an endmill efficiently by a hole within a cutter, each ends of which are on the side surface, and on the spiral slot of a cutting blade, of said cutter, respectively, through which to supply a cutting oil to a cutting edges directly.

8. 发明专利

JPH0620655B2 失效
公开(公告)号：JPH0620655B2
公开(公告)日：1994-03-23
申请号：JP15311987
申请日：1987-06-17
申请人： KOBE STEEL LTD
发明人： WAKIHIRA KOICHIRO , KATSUTA MICHITAKA , HINO MASAYASU , YAMAMOTO TADAO
IPC分类号： B23B51/00

9. 发明专利

JPS645708A DRILL 失效
公开(公告)号：JPS645708A
公开(公告)日：1989-01-10
申请号：JP16058087
申请日：1987-06-26
申请人： KOBE STEEL LTD
发明人： WAKIHIRA KOICHIRO , KATSUTA MICHITAKA , HINO MASAYASU , YAMAMOTO TADAO
IPC分类号： B23B51/02 , B23B51/00
摘要： PURPOSE:To prevent chips from being scattered by forming a main cutting blade in such a manner that it is curved into a concave shape in the direction of rotation, and then making the angle between the main cutting blade and a minor cutting blade to be not less than 100 deg., and further setting the distance from the shaft center of a drill to the point of intersection between the main cutting blade and the minor cutting blade to be not more than 0.2 times as large as the diameter of the drill. CONSTITUTION:Since a main cutting blade 3m is formed in such a manner that it is curved into a concave shape in the direction of rotation, and then, chips are also curved and their stiffness is increased, the chips are caused to flow along the cutting face for a long time. The angle theta between the main cutting blade 3m and a minor cutting blade 3s is set at not less than 100 deg.. Accordingly, the chips emitting from the main cutting blade 3m and the minor cutting blade 3s are connected with each other, and drew in the minor cutting-blade groove 1s side, and then, together with the chips emitting from the minor cutting blade 3s, they collide with the inner periphery surface of the minor groove 1s and are crushed finely. In addition, the distance between the point of intersection P1 between the main cutting blade 3m and the minor cutting blade 3s and the shaft center of a drill is made not less than 0.2 times as large as the diameter D of the drill so that the stiffness of the drill can be maintained. Thereby, the cutting speed can be increased, and the safety can also be improved.

10. 发明专利

JPS6393520A REAMER 失效
公开(公告)号：JPS6393520A
公开(公告)日：1988-04-23
申请号：JP24082986
申请日：1986-10-09
申请人： KOBE STEEL LTD
发明人： WAKIHIRA KOICHIRO , KATSUTA MICHITAKA , HINO MASAYASU , YAMAMOTO TADAO
IPC分类号： B23D77/00 , B23B51/02
摘要： PURPOSE:To perform accurate boring and finish machining by forming a U-shaped recessed auxiliary groove on the center side of the heel face of the blade section of a drill section in a reamer having the drill section at the tip section of a reamer section. CONSTITUTION:Chip discharging main groove 6 is spirally formed along the axial direction of a drill section 1a, and a blade rear face 4 and a heel face 5 are provided on each main groove 6 respectively. The blade rear face 4 is protruded into the main groove 6 as compared with a standard drill 3 to form a thick protruded section 4c. That is, the outside 4a is protruded like a conventional high-rigidity drill 2, on the other hand, the center side 4b is recessed to reduce its thickness. In addition, the heel face 5 is protruded into the main groove 6 at the outside section 5b, and a U-shaped recessed auxiliary groove 8 is spirally formed along the axial direction from the outside end section 5b to the center side. Accordingly, the heel face 5 is made thick at the outside end section 5b and thin at the center side. The auxiliary groove 8 is formed in a fixed range from the tip of the drill section.

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