公开(公告)号：US12017316B2

公开(公告)日：2024-06-25

申请号：US16648253

申请日：2018-09-26

Applicant: OMRON Corporation

Inventor： Yuji Yamazaki ,  Katsuji Takeshita

IPC: B23Q17/12

CPC classification number: B23Q17/12 ,  B23Q2717/006

Abstract: A cutting processing apparatus includes a cutting tool, a chuck portion, a feed mechanism, a fixing portion that fixes the cutting object, a stage that moves the fixing portion at a processing speed in a direction substantially orthogonal to a rotation axis of the chuck portion, a sensor that is arranged in the vicinity of a position on the fixing portion at which the cutting object is fixed, detects vibration of the cutting tool during cutting processing of the cutting object, and outputs a monitoring signal, and a control circuit that converts time waveform data of the monitoring signal to frequency waveform data and extracts an impact amount during cutting processing of the cutting object from the frequency waveform data.

公开(公告)号：US20240198473A1

公开(公告)日：2024-06-20

申请号：US18286300

申请日：2021-05-26

Applicant: FANUC CORPORATION

Inventor： Kazuomi MAEDA ,  Ryoutarou TSUNEKI

IPC: B23Q17/12 ,  G05B19/4065

CPC classification number: B23Q17/12 ,  G05B19/4065 ,  G05B2219/37435

Abstract: Adjustment is performed such that vibration does not occur when a control parameter of a control device is changed, a jig or workpiece is changed, a tool is changed, the presence or absence of machining or the type of machining is changed, an industrial machine or the temperature around it has changed, or the state of lubricating oil associated with an industrial machine has changed. In particular, parameters are optimized that have the potential for causing vibration. The vibration detection device detects vibration in an industrial machine, and includes a state change detection unit for detecting a change in the state of a control device that controls the industrial machine, and a vibration determination unit for determining whether the industrial machine is vibrating. When a change in the state of the control device is detected, the presence or absence of vibration in the industrial machine is determined.

公开(公告)号：US20220410332A1

公开(公告)日：2022-12-29

申请号：US17772339

申请日：2020-11-04

Applicant: DMG MORI CO., LTD.

Inventor： Tsutomu SAKURAI ,  Shinnosuke KUNIKI ,  Ryosuke SHIROSHITA

IPC: B23Q17/12 ,  G06T11/20 ,  G01M13/02 ,  G01M13/028

Abstract: A machine tool that visualizes the state of a ball screw in an easy-to-understand way includes a detector that detects at least one sensed value among vibrations, sound, and a current, heat, light, and power value applied to drive a ball screw during warming-up, a feature amount extractor that extracts a first feature amount and a second feature amount from the sensed value obtained by the detector, and a display that displays a point plotting the sensed value, and at least two boundaries laid out like contour lines to represent the possibility of generation of an anomaly in the ball screw, on a plane having a first axis defined by numerical values regarding the first feature amount and a second axis defined by numerical values regarding the second feature amount.

公开(公告)号：US11440152B2

公开(公告)日：2022-09-13

申请号：US16547577

申请日：2019-08-22

Applicant: FANUC Corporation

Inventor： Daisuke Uenishi

IPC: B23Q17/12 ,  G01H1/00

Abstract: A machining environment measurement device, which enables automatic identification of a vibration source which may cause defects in a machined surface based on pieces of vibration data without performing an actual machining process, includes a reference machining data storage unit that stores reference machining data computed based on time-series data of vibration measured in advance in an ideal machining environment; a data acquisition unit that acquires time-series data of vibration of at least a holder attached to a spindle of the machine tool detected by a holder measurement sensor; an analysis unit that analyzes the time-series data and computes feature data indicating a feature of the time-series data; a comparative determination unit that compares the feature data with the reference machining data and determines a machining environment of the machine tool; and a display unit that displays the determination result of the comparative determination unit.

公开(公告)号：US20220111451A1

公开(公告)日：2022-04-14

申请号：US17645612

申请日：2021-12-22

Applicant: Hyundai Motor Company ,  Kia Corporation

Inventor： Tae Jin Kim ,  Kyoungrok Noh

IPC: B23C3/06 ,  B23Q16/00 ,  B23Q1/54 ,  B23Q17/12

Abstract: A machining center for machining a center groove on a pulley and a flange formed at opposite ends of a crankshaft of a vehicle includes a measurement unit configured to measure a moment of the crankshaft when the crankshaft is loaded and actuated, a control unit configured to calculate an imbalance amount of the crankshaft and to derive center drill coordinates for removing the imbalance amount, a compensation unit mounted in a base frame and configured to compensate a position of the crankshaft by rotating first and second rotating elements based on the center drill coordinates inputted from the control unit when the crankshaft is transported and clamped by a clamping system, and a machining unit configured to machine the center groove in the pulley and the flange of the crankshaft.

公开(公告)号：US10994385B2

公开(公告)日：2021-05-04

申请号：US16480438

申请日：2017-08-16

Applicant: DMG MORI Co., Ltd.

Inventor： Yasutaka Kato ,  Hisayoshi Morita

IPC: B23Q17/24 ,  B23Q17/12

Abstract: A vibration state detection device includes an imaging device configured to image at least one driven element to be driven by a drive unit of a machine tool; and a vibration state analysis unit configured to calculate a parameter corresponding to vibration of the driven element, based on image data for each predetermined period of elapsed time acquired by the imaging device. The parameter includes at least a vibration frequency and a machine tool including the vibration state detection device. Accordingly, it is possible to reliably obtain a parameter corresponding to vibration caused by cutting, even if cutting oil, chips, or the like adheres to a tool of a machine tool, and it is possible to suppress vibration caused by cutting.

公开(公告)号：US20210060720A1

公开(公告)日：2021-03-04

申请号：US17013828

申请日：2020-09-07

Applicant: Tsinghua Shenzhen International Graduate School

Inventor： Feng FENG ,  Chao XU ,  Xueyu MEI ,  Pingfa FENG ,  Yuan MA

IPC: B23Q17/12 ,  G01H1/00

Abstract: A method for monitoring chatter in a machining process includes the following steps: collecting an original signal related to chatter in the machining process; for the original signal, obtaining a signal segment for calculation and analysis by updating data points in a sliding window with a set step-length, where the step-length refers to a number of data points updated every time in the sliding window, and is not greater than the size of the sliding window; calculating fractal dimensions of the signal segments in the sliding window by using a fractal algorithm; and comparing the calculated fractal dimension with an identification threshold to determine whether chatter occurs in the machining process. The measured signal does not need to be preprocessed by using the method, which can greatly improve calculation efficiency and can ensure accuracy of chatter identification.

公开(公告)号：US10889012B2

公开(公告)日：2021-01-12

申请号：US15668172

申请日：2017-08-03

Applicant: OKUMA Corporation

Inventor： Shoichi Morimura

IPC: B25J19/00 ,  B23Q11/00 ,  B08B1/00 ,  B23Q17/09 ,  B23Q17/12 ,  B23Q11/10 ,  B08B3/02 ,  B23B3/06 ,  B25J15/00 ,  B25J19/02 ,  B25J9/04 ,  B25J21/00

Abstract: A machine tool which removal-machines a workpiece by a tool includes an in-machine robot provided in a machining chamber, and a cleaning mechanism that cleans the in-machine robot by removing an adhering substance adhering to the in-machine robot. When the in-machine robot is cleaned, the in-machine robot moves relative to the cleaning mechanism and positions in proximity to the cleaning mechanism.

公开(公告)号：US20200376620A1

公开(公告)日：2020-12-03

申请号：US16884483

申请日：2020-05-27

Applicant: Fanuc Corporation

Inventor： Tsutomu Nakamura ,  Satoshi Ikai

IPC: B23Q17/12 ,  B23Q17/09 ,  B23Q5/10 ,  B23Q11/00

Abstract: A motor control device includes: a position command section configured to generate a position command for a control object; a position detecting section configured to detect a position of the control object or a position of a motor configured to drive the control object; and a position control section configured to control a position of the motor based on the position command and the detected position of the control object or the motor, in which at least one of the position command section and the position control section includes a vibration suppression filter configured to approximate a reverse characteristic of a vibration characteristic generated between the motor and the control object, and the vibration suppression filter changes a vibration suppression frequency according to at least one of the position and a mass of the control object.

公开(公告)号：US20200306914A1

公开(公告)日：2020-10-01

申请号：US16788012

申请日：2020-02-11

Applicant: Fanuc Corporation

Inventor： Satoshi IKAI ,  Daisuke UENISHI ,  Yuanming XU

IPC: B23Q17/12 ,  B23Q17/00 ,  B23Q17/10

Abstract: A spindle vibration measuring system which measures vibration of a spindle in a machining device that performs a cutting or abrading process on a workpiece. The machining device has a workpiece holder that holds the workpiece, the spindle that holds a tool, and a moving mechanism that relatively moves the workpiece holder and the spindle. The spindle vibration measuring system acquires positional variation data or vibration data of the moving mechanism when the spindle rotates, and a result related to vibration of the spindle to output or store based on the positional variation data or the vibration data.