公开(公告)号：US20200269366A1

公开(公告)日：2020-08-27

申请号：US16800261

申请日：2020-02-25

申请人： NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY ,  NAGOYA INSTITUTE OF TECHNOLOGY

发明人： Eiji SHAMOTO ,  Fumihiro ITOIGAWA

IPC分类号： B23P15/24 ,  B23B27/14 ,  B23K26/38 ,  B23K26/50

摘要： A controller performs a first process of scanning a cylindrical irradiation region including a focused spot of laser light emitted from a laser light emitter to machine a flank face side of a workpiece to manufacture a cutting tool having a plurality of cutting edges arranged in line. In the first process, the controller scans the cylindrical irradiation region along a scanning path that has periodicity and changes a machining depth to form the plurality of cutting edges. The controller further performs a second process of scanning the cylindrical irradiation region including the focused spot of the laser light emitted in a direction different from an irradiation direction of the laser light in the first process to machine a rake face side of the workpiece.

公开(公告)号：US20200269458A1

公开(公告)日：2020-08-27

申请号：US16826803

申请日：2020-03-23

申请人： NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

发明人： Eiji SHAMOTO ,  Hongjin CHUNG ,  Takehiro HAYASAKA

IPC分类号： B26D5/00

摘要： A controller uses detection information of a contact sensor or time-series data of a detection value related to a drive motor included in a rotation mechanism and/or a feed mechanism to acquire a coordinate value when a cutting tool comes into contact with a to-be-cut object or a component. The controller determines a relative positional relationship between the cutting tool and a rotation center of the to-be-cut object based on coordinate values when the cutting tool comes into contact with the to-be-cut object subjected to turning work or a reference surface whose relative positional relationship with the rotation center of the to-be-cut object is known at least at two positions different from a rotation angle position of the cutting tool during the turning work.

公开(公告)号：US20190299480A1

公开(公告)日：2019-10-03

申请号：US16307688

申请日：2017-06-01

申请人： NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY ,  YAMAGATA PREFECTURAL GOVERNMENT ,  SUGA ZOUKEI KOGYO INC. ,  IMUZAK INC.

发明人： Eiji SHAMOTO ,  Hiroshi SAITO ,  Tsuneyuki KOBAYASHI ,  Manabu MOCHIZUKI ,  Kazumi SAWAMURA

IPC分类号： B26D5/00 ,  B26D1/45

摘要： A micromachining method, a die manufacturing method, and a micromachining apparatus performing accurate micromachining on a surface of a workpiece at high speed. A micromachining apparatus having a cutting tool and a vibration unit for vibrating the cutting tool in a first direction is used. The angle formed between an average cutting direction of the cutting tool and the first direction is set to fall within a range of 20° to 120°. Recesses and protrusions are formed on a surface of a workpiece as a result of machining by the cutting tool which is vibrating in the first direction.

公开(公告)号：US20200215710A1

公开(公告)日：2020-07-09

申请号：US16804646

申请日：2020-02-28

申请人： NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY ,  TAGA ELECTRIC CO., LTD. ,  FANUC CORPORATION

发明人： Eiji SHAMOTO ,  Hongjin CHUNG ,  Takehiro HAYASAKA ,  Seiji HAMADA

IPC分类号： B26D7/08 ,  B23Q17/12 ,  B23Q17/22 ,  B23Q15/013

摘要： A movement controller controls a feed mechanism to move a vibration device relative to a workpiece. A vibration controller controls vibration of piezoelectric elements of the vibration device. The vibration controller acquires a status value indicating a vibration control status and detects contact between a cutting tool and the workpiece or the like based on a change in the status value. The vibration controller acquires at least one among energy consumption required for the vibration and a resonance frequency as the status value. The vibration controller determines a relative positional relationship between the cutting tool and a rotation center of the workpiece based on coordinate values of at least two contact positions.

公开(公告)号：US20190091778A1

公开(公告)日：2019-03-28

申请号：US16083113

申请日：2017-02-28

申请人： NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

发明人： Takehiro HAYASAKA ,  Shunsuke FUJIMAKI ,  Eiji SHAMOTO

IPC分类号： B23C5/10 ,  B23Q15/12 ,  G05B19/4155

摘要： An end mill machining apparatus, a CAM apparatus, an NC program, and a machining method which suppress regenerative self-excited vibration and mode-coupling self-excited vibration. An end mill machining apparatus includes an end mill, and a control section for controlling the end mill. The ratio of the protrusion length of the end mill to the diameter of the end mill falls within a range of 5 to 50. The end mill is a variable pitch, uniform helix type or a variable helix type. The control section controls the end mill such that the contact angle between the end mill and a workpiece M1 during machining becomes equal to or smaller than a critical contact angle θlim.

公开(公告)号：US20160368068A1

公开(公告)日：2016-12-22

申请号：US14901290

申请日：2014-06-30

申请人： NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

发明人： Eiji SHAMOTO

IPC分类号： B23C5/28 ,  G05B19/23 ,  B23Q11/10

CPC分类号： B23C5/28 ,  B23C3/30 ,  B23C9/00 ,  B23C2210/56 ,  B23C2250/12 ,  B23Q11/0032 ,  B23Q11/10 ,  B23Q2220/008 ,  G05B19/23 ,  G05B2219/45145 ,  Y10T409/304032

摘要： An end milling apparatus has an end mill and a support member. The end mill has a cutting portion and a non-cutting portion. The support member supports the non-cutting portion in at least one direction toward the periphery of the end mill. The width of the support member as measured in the direction orthogonal to the direction of the center axis of the end mill and to the direction in which the support member is located as viewed from the end mill is smaller than the outer diameter of the end mill.

摘要翻译： 端铣式装置具有端铣刀和支撑构件。 立铣刀具有切割部分和非切割部分。 支撑构件朝向端铣刀的周边的至少一个方向支撑非切割部分。 在与端铣刀的中心轴方向正交的方向上测量的支撑构件的宽度以及从端铣刀观察时支撑构件所位于的方向的尺寸小于端铣刀的外径 。

公开(公告)号：US20220305563A1

公开(公告)日：2022-09-29

申请号：US17642476

申请日：2020-08-18

申请人： National University Corporation Tokai National Higher Education and Research System ,  Nagoya Institute of Technology ,  Murata Machinery, Ltd.

发明人： Eiji SHAMOTO ,  Fumihiro ITOIGAWA ,  Ryuzo MORI

IPC分类号： B23B5/08 ,  B23B1/00

摘要： A rotation mechanism 9 rotates a spindle 2a to which a workpiece 6 is attached. A feed mechanism 8 feeds a cutting edge 4a positioned obliquely relative to a rotation axis of the workpiece 6 in a direction containing a cutting direction component orthogonal to the rotation axis with the cutting edge 4a cutting into the workpiece 6 to machine a surface of the workpiece 6. The cutting edge 4a of a cutting tool 4 has been formed by scanning a cylindrical irradiation region including a focused spot of laser light over a diamond-coated layer of a chip base material.