METHOD OF SURFACE MACHINING OF HOT ROLLED STEEL MATERIALS AND APPARATUS THEREFOR

• Main Authors: HAYASHI, KANJI, ISOYAMA, SHIGERU, NIKAIDO, HIDEYUKI, KURODA, MOTOFUMI, NAKAGAWA, TADASHI, KATSURA, SHIGEFUMI, HIRABAYASHI, TAKESHI, TAKAGI, MITSUHIRO, SHIMIZU, MASUTO, YUKI, ATSUSHI, ICHIKIZAKI, TETSUO, AMAGASA, TOSHIAKI, TASHIRO, SHOZO
• Format: Patent
• Language: English; French; Japanese
• Published: 06.02.1997
• Edition: 6
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MILLING; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

According to the invention, when upper and lower surfaces of a hot sheet material are to be machined by rotation of milling cutters, which interpose the hot sheet material from above and below, while the hot sheet material runs, a cutting resistance determined by a kind of the hot sheet material and a cutting condition including temperatures at the time of machining and depth of cut is controlled through adjustment of the depth of cut, and the hot sheet material is machined while breakage thereof is prevented with tension caused in the hot sheet material by the cutting resistance kept smaller than a breaking strength of joined portions of the material. Lorsque les faces supérieure et inférieure d'un matériau en feuille chaud à usiner par rotation entre des fraises se déplacent de part et d'autre de celles-ci, on agit, dans le cadre de cette invention, sur une résistance à la coupe due au type de matériau en feuille chaud et aux conditions de coupe, au nombre desquelles on compte la température existant au moment de l'usinage et la profondeur de coupe, en adaptant cette profondeur. On usine donc le matériau en feuille chaud tout en l'empêchant de casser, les tensions survenant dans le matériau dues à la résistance à la coupe étant maintenues à un seuil inférieur à la charge de rupture des parties jointes du matériau.