著者

兒玉 龍二

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.9, pp.832-835, 2015-09-05 (Released:2015-09-05)

参考文献数

3

著者

古川 正志

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.82, no.8, pp.735-739, 2016-08-05 (Released:2016-08-05)

参考文献数

1

著者

辻野 次郎丸

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.82, no.5, pp.407-412, 2016-05-05 (Released:2016-05-05)

参考文献数

13

著者

松井 真二

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.2, pp.137-142, 2010-02-05 (Released:2010-08-05)

参考文献数

15

著者

森田 寿郎

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.77, no.8, pp.751-754, 2011-08-05 (Released:2012-02-07)

参考文献数

2

著者

會田 英雄 青田 奈津子 木村 豊 川又 友喜 小山 浩司 山崎 努 土肥 俊郎

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.78, no.11, pp.932-936, 2012-11-05 (Released:2013-05-05)

参考文献数

7

著者

白瀬 敬一 稲村 豊四郎 安井 武司

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.2, pp.286-291, 1991-02-05 (Released:2009-10-08)

参考文献数

5

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A hybrid bearing is proposed for high speed machine tool spindle. The bearing composed of two angular contact ball bearings in a series arrangement and has a middle race between double column rolling elements besides the inner and outer race. The third race rotates with keeping a balance of the inner and outer bearing's friction. The spindle rotates at the speed of the sum of the inner and outer bearing's speed. The friction torque of the proposed bearing is less than a conventional bearing's one. But the simulation showed that the bearing has an effective speed range due to the retainer speed and the centrifugal force of the balls. At the critical speed, the friction torque of the bearing coincides with a conventional bearing's one. The critical speed can be rised by use of ceramics balls or small steel balls and an optimum lubricant system. A preliminary experiment of the proposed bearing showed that the final temperature rise of outer race is three degrees C only at 10000 rpm. The experimental critical spindle speed was about 8000 rpm against theoretical 17500 rpm.

著者

佐久田 茂 足立 幹雄 小川 潔 高須 登 上田 勝宣 平 浩三 中野 敏行

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.62, no.10, pp.1444-1448, 1996-10-05

参考文献数

10

被引用文献数

1

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摩擦駆動を応用した光ディスク原盤露光用テーブル送り機構を開発した.<BR>(1) テーブルの駆動系として, 大ストローク・高分解能でサイクリックエラーのない摩擦駆動を用いた.モータ軸, 支持ローラ, 予圧印加軸の3つのローラによる駆動ロッド支持機構, ダイレクトドライブ, 最大予圧100Nの摩擦駆動機構を採用した.<BR>(2) 干渉計とミラーとの間に分岐ミラーを配置し, レーザ光路を2系統に分割するテーブルのヨーイング自動補正機能を備えたレーザフィードバック制御光学系を設計し, 原盤記録の高精度化を図った.<BR>(3) テーブル位置制御特性に関しては, 10μm/s定速送り時の追従誤差は2。9nm (σ) であった.また1μmステップ応答の3%静定時間は約0.15s, 定常偏差は10nm以下であった.<BR>(4) 本テーブル送り機構を用いた露光装置で実際の露光を行った.nmオーダの精度の安定した記録を実現した.次世代以降の高密度光ディスクに対応した原盤を製作することができた.<BR>今後は, 各種の露光方法・露光形状について, 露光条件を追い込み, 記録の高精度化を目指す.

著者

名村 義人

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.66, no.9, pp.1343-1347, 2000-09-05 (Released:2009-04-10)

著者

渡部 司

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.82, no.9, pp.792-796, 2016-09-05 (Released:2016-09-05)

参考文献数

15

被引用文献数

1 1

著者

清水 茂夫 瀧澤 秀樹

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.62, no.6, pp.865-870, 1996-06-05

被引用文献数

3 1

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The load distribution and life formula for LMBG (Linear Motion Ball Guides) system constructed by two guide blocks on one rail are derived and the theoretical analysis is carried out concerning the basic dynamic.load ratings which are considered with the fluctuations of load distributions, the effect of linear strokes, load eccentricities, conformity factors etc., then the fatigue life test series made up two crowning patterns of guide block raceways are carried out. The results are as follows : (1) The basic dynamic load ratings of LMBG system increase in accordance with the increase in the strokes and decrease in the conformity factors, and decrease in accordance with the increase in the load eccentricities. (2) Theoretically, the probability of flaking occurrence in the guide block raceways is greater than that of the rail, because of the differences between the number of stress cycles and the basic dynamic load rating for the block and rail. (3) In the experiment, the most flaking occurrences are from the rail raceways due to the materials difference from the block and rail. (4) The life test results fit well to the 3-parameter Weibull distribution which is introduced to the location parameter i.e. the minimum life and the Weibull slope m=10/9. (5) The estimated basic dynamic load ratings from two test series are 50% and 90% for the theoretical values, respectively.

著者

飯塚 幸三

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.73, no.11, pp.1208, 2007 (Released:2009-12-11)

著者

北古賀 義之

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.58, no.8, pp.1284-1286, 1992-08-05 (Released:2009-10-08)

被引用文献数

1

著者

辻 聡美 佐藤 信夫 矢野 和男

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.12, pp.1109-1116, 2017-12-05 (Released:2017-12-05)

参考文献数

18

被引用文献数

1

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Companies require new human resource management approach which brings out each worker's strength. In this paper we propose integrated approach for “measurement based management” which based on statistical analysis of body motion data by wearable sensors of workers. Feature of the proposed approach is including a process that workers interpret the result by themselves and encouraging change of behavior at work. The result of applying the proposed method for actual organization, it is confirmed that workers successfully obtained their interpretation, consensus formation and validation of work measures. This confirmed that the proposed method is effective for office workers to improve their work style proactively and continuously.

著者

及川 秋夫

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.58, no.8, pp.1278-1280, 1992-08-05 (Released:2009-10-08)

参考文献数

2

著者

山海 嘉之 朱 疆 田中 秀岳

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.979-982, 2017-11-05 (Released:2017-11-05)

著者

蛯名 雄太郎 前崎 智博 周 立波 清水 淳 小貫 哲平 尾嶌 裕隆 乾 正知

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.7, pp.640-645, 2018-07-05 (Released:2018-07-05)

参考文献数

16

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The grinding wheel is comprised by three elements; abrasive grain, bonding material and pore, which are specified by five factors; type of abrasive grain, grain size, type of bonding material, grade of hardness and abrasive grain volume percentage. Regarding the abrasive grain, it is well known that shape and number of cutting edge significantly effects grinding performance such as surface roughness, grinding force and grinding wheel life. In general, abrasive grain size is determined by mean diameter of abrasive grain. However, the abrasive grains in a grinding wheel are randomly scraggly in size and shape. There is no particular aspect to regulate the grain size variation in JIS (Japanese Industrial Standards). This paper investigates the effect of grain size variation on the ground surface topography by actual grinding on silicon wafers and analysis based on grinding simulation. The results reveal that the standard deviation of grain size is a very important index to characterize the grinding performance of a wheel. Smaller standard deviation leads to larger density of effective cutting-edge under the same volume percentage of abrasive grain contained in the wheel. This fact significantly contributes to not only achieve a better surface roughness and more uniform surface integrity, but also shorten the finishing time.

著者

城 道介 鳥居塚 卓 大島 俊哉

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.55, no.5, pp.883-889, 1989-05-05

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Eleven operations on a set of two-dimensional domains are defined to grasp and handle clearly the varied types of collision problems in process planning of NC-lathe operations. One of the most essential concepts for the solution of dynamic collision problems is "Interference Domain" determined by a wonk-contour and a tool-contour. When the tip of the tool is located in the interference domain, the tool must collide against the workpiece. Using inversion and envelope operations, an algorithm named "Inversed Template Method" is presented to compute an interference contour easily from complicated contours of work and tool. A computer program is coded as a set of subroutines executing the operations by which several typical collision problems in lathe operations are solved to show the effectiveness of the domain operations.

著者

寺田 英嗣 牧野 洋 今瀬 憲司

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.11, pp.1609-1613, 1997-11-05

参考文献数

5

被引用文献数

2 2

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It is important to eliminate the backlash and to reduce inertia for high accuracy linear motion system. For this reason, the trochoid cam rack has been developed. The profile undercut must be avoided to satisfy the required performance. So this rack profile is ground using trochoid curve loci. In this report, the motion principle has been analyzed, and it becomes clear that there is the optimal value of rack profile offset factor which affects on pressure angle and radius of curvature. Also, roller diameter and tooth height affects on those characteristics. The optimal cam rack without profile undercut is designed using the selected each design factor. The prototype cam rack system using optimal design value is made and tested. It is proved that the system has high positioning accuracy without backlash.

著者

宮下 勤

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.73, no.2, pp.201-205, 2007 (Released:2009-12-25)

被引用文献数

1