著者
菅沼 克昭
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.79, no.8, pp.730-734, 2013-08-05 (Released:2014-01-05)
参考文献数
5
被引用文献数
1 1
著者
山田 真人 鈴木 譽久 山口 光隆 新井 健生
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.74, no.1, pp.102-106, 2008-01-05 (Released:2010-07-21)
参考文献数
10

Laser beam scanning technology has been used in various machinery such as laser beam printers, laser processing machines. Recently, the usage such as distance sensors for automobiles, area sensors for robots has expanded further. According to it, the miniaturization of beam scanning equipment, advanced features, and low-pricing have also come to be called for strongly. We suggest a method of two-dimensional beam scanning by driving a lens with an electromagnetic actuator. We use suspension wires to hold the scan lens. As a result, two-dimensional beam scanning is possible by simple structure. This paper describes the structure of the scanner module system and characteristics of the prototype model.
著者
前田 安郭
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.76, no.4, pp.395-398, 2010-04-05 (Released:2010-10-05)
参考文献数
25
被引用文献数
1 1
著者
石井 千春
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.83, no.11, pp.1006-1009, 2017-11-05 (Released:2017-11-05)
参考文献数
4
被引用文献数
2
著者
笠松 勇 古川 浩
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.59, no.12, pp.1973-1978, 1993-12-05 (Released:2009-07-23)
参考文献数
11

In the explosive forming method using only a blasting cap as the explosion source, by changing the distance between the blasting cap and a blank, the amount of deformation of the blank is controlled.Therefore, it is important for controlling the amount of deformation to forecast how much proportion of the explosion heat of a blasting cap is converted to the deformation energy. In this report, the strain energy required for the deformation of a blank is calculated, and with its ratio to the explosion heat of a blasting cap, the energy efficiency of the blasting cap is to be determined. In the case of using a die with the cavity radius of 36mm and the shoulder radius of 3mm, and carrying out the free forming of a brass sheet of 0.8mm thickness, the following results were obtained. N amely when the distance between a blank and a blasting cap was close, and it was assumed that the strain energy of the blank is 0.79 kJ, and the explosion heat of the blasting cap is 0.3 kJ, the energy efficiency was 26%.When the distance was 1200mm, the strain energy was 0.16 kJ, the strain energy efficiency was 5.5%.
著者
福田 理明 笹原 弘之 松田 礼 堤 正臣
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.76, no.1, pp.111-115, 2010-01-05 (Released:2010-07-05)
参考文献数
7
被引用文献数
1 1

This study describes a new machining strategy to make regularly aligned geometric pattern by ball-end milling process employing a patch division milling technique. The surface is divided into a lot of triangle patch segments which is machined with helical tool path. It is newly proposed the way to array cutter marks straightly in arbitrary triangle patches. In addition, it is shown that the inclination angle of cutter marks array against the feed direction can be controlled by the appropriate setting of feed per tooth and cross feed for an arbitrary triangle patch. It is shown that the experimental results and simulation results are in good agreement. It is also reported that the well arranged cutter marks arrays are formed on the triangle patches on the spherical model.
著者
菊池 望
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.57, no.8, pp.1347-1351, 1991-08-05 (Released:2009-10-08)
参考文献数
6
著者
金沢 憲一 中川 歩 三浦 崇
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.63, no.1, pp.70-75, 1997-01-05 (Released:2009-06-30)
参考文献数
2
被引用文献数
5 4

Mechanical properties of sweet potato are examined experimentally by compressive tests. And the computer simulation is conducted using FEM, on the separating process that sweet potato is cut by a knife-edged cutter with flat blade. The results obtained are as follows : (1) The calculation result almost corresponds to the process which sweet potato is separated by the preceding crack caused by a cutter except initiation. (2) The variety of cutting force is also the same as the experiment on each blade angle of a cutter. (3) In calculation, the effect of blade angle on two factors, the peak of cutting force and the cutting energy, is similar to the experiment. But both calculated values are higher than the experiment due to the high frictional coefficient between the separated surface and a cutter, which is obtained by a simple frictional test.
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.81, no.6, pp.520-522, 2015-06-05 (Released:2015-06-05)
著者
洪 鋒雷
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.80, no.7, pp.634-637, 2014-07-05 (Released:2014-07-05)
参考文献数
17
著者
沼田 宗敏 加藤 邦人 輿水 大和
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.76, no.5, pp.592-597, 2010-05-05 (Released:2010-11-05)
参考文献数
11
被引用文献数
2 2

This paper proposes a robust and fast Hough transform by which a set of lines can be detected by the use of high-speed M-estimator. This proposed method is one of the matching methods that is similar to the least squares (LS) method, however, the proposed method does not use the conventional parabolic function for the error function, and instead, does use the 2nd order B-spline basis function so that the following extreme advantages could be provided : The ill effect caused by the outlier will be drastically decreased in the proposed method, and in addition, the estimated line becomes just the same as those given by the LS fitting when no outlier exists. Furthermore it was possible to reduce the computation cost by introducing the successive usages of the rectangular filter.
著者
古島 終作 金井 理 高橋 秀智
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.59, no.6, pp.969-974, 1993-06-05 (Released:2009-07-23)
参考文献数
9
被引用文献数
1

本研究の結論は以下のようにまとめられる.(1) 手書きの線画の位相情報と幾何情報をもとに, 1枚の線画中で左右対称な頂点と曲線の対応付けと, 2線画間で同一な頂点と曲線の対応付けを自動的に行う手法を提案した。(2) 2次元曲線と3次元曲線との透視変換の関係が明らかである有理Bézier曲線の性質を用いて, 左右対称又は2線画間で対応付けられた2次元曲線を表わす点列から, その点列と投影された曲線との距離が投影面上で最小になる3次元有理Bézier曲線を直接計算する手法を提案した.(3) (1), (2) の手法を統合し, 容易かっ高速に手書きの線画から3次元自由曲線モデルを生成できるシステムを開発し, 手法の有効性を確認した.なお, 本研究は東京工業大学工学部知能化機械研究設備を用いて行われた.
著者
向井 優 野田 善之
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.84, no.4, pp.303-306, 2018-04-05 (Released:2018-04-05)
参考文献数
3
被引用文献数
6
著者
西村 正治
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.64, no.5, pp.669-673, 1998-05-05 (Released:2009-06-30)
参考文献数
13