Nikko Company

Ishikawa Prefecture

Tokyo Institute of Technology

Sodick Co., Ltd.

Ishikawa Prefectural Government

Masahiro Takano

Mikio Takimoto

Kenichi Hirosaki

Yuta Yoshida

Takashi Yoshida

Kentaro Nakamura

Shuji Okazaki

Ichiro Araie

Yasuyuki Miyashita

Hiroyasu Miyakawa

Masayuki Ishida

Hiroshi Kawai

Satoru Ichimura

Takuya Nagata

Koji Ando

Shou Makino

Ryuji Shintani

The present invention provides a system capable of estimating a molding state in a manufacturing process of the lamination molded object. According to the present invention, provided is a system for estimating a molding state in a manufacturing process of the lamination molded object including an image acquisition unit and an analysis unit. The lamination molded object is manufactured by repeating a material layer forming step of forming a material layer by supplying material powder onto a molding region and a solidified layer forming step of forming a solidified layer by irradiating the material layer with a laser beam. The image acquisition unit is configured to acquire image data of a spatter generated around a molten pool formed by irradiation with the laser beam. The analysis unit is configured to analyze the image data to estimate a parameter representing the molding state.

Lamination molding apparatus, molding state estimation system, molding state estimation method, molding state estimation program, and learning method of learning model for molding state estimation

Electrodes (), having curved sections in the shape of the outline thereof, are disposed in areas of a rectangular plate-shaped piezoelectric transducer element () in which the strain in the natural mode of vibration is large. The electrodes () which excite a bending vibration are disposed in areas in which the strain in the bending natural mode is at least a predetermined value, and the outline curved sections of the electrodes () are shaped so as to follow along strain contours (), and the electrode () which excites a stretching vibration is disposed in an area in which the strain in the stretching natural mode is at least a predetermined value, thus providing a transducer for an ultrasonic motor which aims to reduce transducer loss (increasing vibration efficiency), and improve transducer durability and reliability.

Transducer for ultrasonic motor

A holding device for a piezoelectric vibrator including a support member () for separately accommodating a piezoelectric vibrator (), a first plate spring member () which extends from a proximal end fixedly bonded to one side of the support member () so as to sandwich opposing sides of the piezoelectric vibrator () and is folded back to be fixedly bonded to the piezoelectric vibrator, and a second plate spring member () which extends from a proximal end fixedly bonded to another side of the support member () so as to sandwich the opposing sides of the piezoelectric vibrator () and is folded back to be fixedly bonded to the piezoelectric vibrator. The first plate spring member () and the second plate spring member () are integrated at portions fixedly bonded to the piezoelectric vibrator ().

Apparatus for holding piezoelectric vibrator

In the invention, each piezoelectric element for a vibrator for an ultrasonic motor has electrode regions for exciting stretching vibration and flexural vibration separately. Thus, the invention provides a vibrator for an ultrasonic motor, in which electrodes are provided for applying voltage to each of the polarized region, and further provides a stack-type piezoelectric vibrator for an ultrasonic motor, consisting of a stack of the said vibrators and having an extraction electrode pattern provided for short circuit with an external electrode. The vibrator of the invention has high controllability, especially in a fine movement region and is useful as a driving source in a positioning device, in which enhanced vibration efficiency can be obtained.

Piezoelectric vibrator for ultrasonic motor

Growing community of inventors

Kanazawa, Japan

Masahiro Takano