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END MILL MACHINING DEVICE, CAM DEVICE, NC PROGRAM, AND MACHINING METHOD

外国特許コード F180009342
整理番号 S2016-0450-C0
掲載日 2018年3月13日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2017JP007811
国際公開番号 WO 2017154671
国際出願日 平成29年2月28日(2017.2.28)
国際公開日 平成29年9月14日(2017.9.14)
優先権データ
  • 特願2016-048792 (2016.3.11) JP
発明の名称 (英語) END MILL MACHINING DEVICE, CAM DEVICE, NC PROGRAM, AND MACHINING METHOD
発明の概要(英語) [Problem] To provide an end mill machining device, a cam device, an NC program, and a machining method in which regeneration-type self-induced vibration and mode-coupling-type self-induced vibration are suppressed.
[Solution] This end mill machining device 100 has an end mill 10, and a control unit 150 for controlling the end mill 10. The ratio of the protrusion length of the end mill 10 with respect to the diameter of the end mill 10 is 5-50. The end mill 10 has a variable-pitch equal lead or a variable lead. The control unit 150 controls the end mill 10 such that the contact angle between the end mill 10 and a work material M1 during machining is equal to or less than a critical contact angle θlim.
従来技術、競合技術の概要(英語) BACKGROUND ART
Industrial manufacturing processes is, cutting is often used. Cutting the, for example, or direct processing of the product, the mold may be used for the film and the like. Such that when the cutting, tool chatter vibration may be generated. Chatter vibration is, the surface finish of the tool or the deterioration of the shape and causing damage.
The chatter vibration, and the forced vibration, and self-oscillation, of the types 2. And the forced vibration, some forced vibration by the vibration characteristic of the machine due to vibration is enlarged. For example, end milling or the like generated in the cutting forces caused by intermittent. However, forced oscillations may not be included in the chatter vibration. Is a self-oscillation, in a closed loop feedback vibration during cutting due to the presence of growth and increase the vibrations.
Is the main self-oscillation, and self-oscillation of the regeneration, and self-oscillation of the mode coupling type, is. Reproduction type of self-excited vibrations, for example, before one rotation or one that has occurred on the case in which the cutting blade before the vibration of the working surface remains as a relief, and the residue due to the vibration of the current shape and the cut caused by changing the thickness. Mode coupling type of self-excited vibrations, for example, 2 has a resonance frequency close the vibration modes of the case, they are caused by the coupling. Is such that the chatter vibration, summarized as the following table 1.
(B) Table 1 (a) the forced vibration and self-oscillation (b-1) regeneration (b-2) self-oscillation of the self-oscillation of the mode-coupling
Therefore, in order to suppress the chatter vibration have been a technique has been developed. For example, in patent document 1, to an odd number of teeth are different division angle is given to the unequal division of the end mill is disclosed.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NAGOYA UNIVERSITY
  • 発明者(英語)
  • HAYASAKA Takehiro
  • FUJIMAKI Syunsuke
  • SHAMOTO Eiji
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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