Trial Manufacture Research Articles

Studies on the Development of a Lotus-roots Harvester by Water Jet (II) Trial manufacture of a lotus-roots harvester using a stationary water pump and its performance

Studies on the Development of a Lotus-roots Harvester by Water Jet (II) Trial manufacture of a lotus-roots harvester using a stationary water pump and its performance

2A1-A20 跳躍・走行・舞踏ロボット用バイオミメティックアクチュエータの開発 : シリコンゴムを用いたロボット用腱構造の開発

The authers have been developing motor-spring-joint series connection type biomimetic soft actuators to make robots act jumping, runnning and dancing like animals. The spring plays the role of the tendon of the mascular-skeletal system of the animals. In this study, instead of the formerly developed actuators using normal torsion coil type spring, a silicone rubber compression type tendon structure was proposed. After the trial manufacturing, the silicone rubber tendon structure can be composed less weight with more load capacity. It also can be adjusted its rigidity easily to the same order of such as human achilles tendon. The load capacity and the rigidity of the silicone rubber tendon structure can be adjusted by the size (width and size of the cross-sectional area) and the rigidity of the silicone rubber. A single joint type biomimetic actuator was also produced using silicone rubber tendon structure and 150W D.C. coreless motor. The actuator was set on the one-axis movable test bench to restrict the motion along the spline shaft. After the simple jumping experiment, it was found that the actuator could jump to the 115mm height softly and without needless vibrations.

315 加工環境制御型密閉式両面CMP装置の設計試作とその加工特性(GS 生産加工II)

315 加工環境制御型密閉式両面CMP装置の設計試作とその加工特性(GS 生産加工II)

202 Φ1000mmロールを用いた縦型高速双ロールキャスターの試作(溶融加工・半凝固加工,ものづくりにおける基礎研究と先端技術の融合)

202 Φ1000mmロールを用いた縦型高速双ロールキャスターの試作(溶融加工・半凝固加工,ものづくりにおける基礎研究と先端技術の融合)

クラッド材作製用縦型タンデム双ロールキャスターの試作(<小特集>M&P2009機械材料・材料加工部門技術講演会)

クラッド材作製用縦型タンデム双ロールキャスターの試作(<小特集>M&P2009機械材料・材料加工部門技術講演会)

Individuality and Active Sensitivity in Trial Manufacturing

Individuality and Active Sensitivity in Trial Manufacturing

薄板バーゲージ設計最適化

In order to manufacture products, various manufacturing specifications are necessary to be determined in advance. To manufacture cold-rolled steel sheets, as an example, specifications, such as additive elements, rolling conditions, heat treatment conditions, have freedom of choice. And they have to be properly determined, considering various conditions and restrictions. More concretely, manufacturing specifications are usually determined through laboratory experiments or trial manufacture at actual processes, considering their influences on quality, cost, and production throughput of products. As changing manufacturing specifications usually give influence on quality, cost, and production throughput of products, it is not easy to change them according to the conditions such as the amount of in-process inventory, change of production cost or production requirements, and so on. This paper presents a new approach to promptly determine manufacturing specifications, by analyzing and quantitatively modeling relations between manufacturing specifications and indices of estimation for consequent manufacture, and selecting manufacturing specifications for realizing optimum indices of estimation. This approach is applied for determining bar gauge, thickness of hot-rolled coils, for manufacturing cold-rolled steel sheets, and improvement of production is realized by adapting to the changes of requirements and circumstances of production.

507 クラッド材作製用縦型タンデム双ロールキャスターの試作(溶融加工・半凝固加工)

507 クラッド材作製用縦型タンデム双ロールキャスターの試作(溶融加工・半凝固加工)

1A2-B15 カンキツ生産の情報化のための移動型選果機の試作

1A2-B15 カンキツ生産の情報化のための移動型選果機の試作

C214 700℃級先進型超々臨界圧蒸気タービン用蒸気弁の試作と機械特性評価(IGCC,蒸気タービン,OS7 高温・高効率発電)

C214 700℃級先進型超々臨界圧蒸気タービン用蒸気弁の試作と機械特性評価(IGCC,蒸気タービン,OS7 高温・高効率発電)

Mixed Reality-based Interactive Technology for Aircraft Cabin Assembly

Due to the narrowness of space and the complexity of structure, the assembly of aircraft cabin has become one of the major bottlenecks in the whole manufacturing process. To solve the problem, at the beginning of aircraft design, the different stages of the lifecycle of aircraft must be thought about, which include the trial manufacture, assembly, maintenance, recycling and destruction of the product. Recently, thanks to the development of the virtual reality and augmented reality, some low-cost and fast solutions are found for the product assembly. This paper presents a mixed reality-based interactive technology for the aircraft cabin assembly, which can enhance the efficiency of the assemblage in a virtual environment in terms of vision, information and operation. In the mixed reality-based assembly environment, the physical scene can be obtained by a camera and then generated by a computer. The virtual parts, the features of visual assembly, the navigation information, the physical parts and the physical assembly environment will be mixed and presented in the same assembly scene. The mixed or the augmented information will provide some assembling information as a detailed assembly instruction in the mixed reality-based assembly environment. Constraint proxy and its match rules help to reconstruct and visualize the restriction relationship among different parts, and to avoid the complex calculation of constraint's match. Finally, a desktop prototype system of virtual assembly has been built to assist the assembly verification and training with the virtual hand.

201 工学教育教材の試作を動機とする実用スターリングエンジンの開発(エネルギー教育・環境教育)

201 工学教育教材の試作を動機とする実用スターリングエンジンの開発(エネルギー教育・環境教育)

Characteristic analysis and trial manufacture of permanent‐magnetic type linear generator

AbstractThis paper describes the design and trial manufacture of a linear generator which can convert any mechanical vibration of an automobile to electrical energy. A mover, which includes permanent magnets, is linearly driven through a stator by vibrations. The Nd‐Fe‐B magnets in the mover are placed facing the same magnetic poles in order to produce a change of magnetic flux in the coils of the stator. The coils are placed in the stator with the same intervals as the magnets. Successive coils are wound in opposite directions and are connected in series. A magnetic iron core covering the stator makes the magnetic flux extend through the case and reduces flux canceling in the coils of the stator. The distribution of the magnetic field, the electromotive force, and the driven power of the mover were calculated by numerical simulations in order to determine the size of the linear generator. A linear generator and experimental apparatus were built on the basis of the simulation. The performance characteristics were tested in experiments, and the produced linear generator was confirmed to be useful as an onboard auxiliary power supply. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 166(3): 94– 100, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20751

Structural improvement for solder joint failure in ultrasonic plastic assembly

This paper presents a method of structural dynamic analysis with finite element method to identify the cause failure of solder joint caused by the vibration of ultrasonic welding. In this method, explicit FE method and its contact algorithm are used to simulate the energy transmission from vibrational energy to internal energy under some assumptions. Therefore, firstly, its feasibility is verified by 2D coupled thermal–mechanical analysis. Then, based on a certain type of cell phone battery, a 3D FE model is established for analyzing the vibration of the solder joints during ultrasonic welding. According to the simulation, we analyze the cause of the failure from three aspects: the location of the chip, the shape of the PCB and the structure of the housing. Correspondingly, the improvements are presented and applied to trial manufacture. The result from mass production shows that the improvements can decrease the reject ratio by 90% compared with the original design.

The trial manufacture of device which supported operation of push button switches.

The trial manufacture of device which supported operation of push button switches.

Trial manufacturing of coining punch made of hardened die steel using a micro-cBN end mill

Trial manufacturing of coining punch made of hardened die steel using a micro-cBN end mill

3302 竹繊維を強化材としたFRPボートの開発(OS5-1 安全,安心,低環境負荷の設計,OS5 安全・安心・防災・環境負荷低減,オーガナイズド・セッション)

3302 竹繊維を強化材としたFRPボートの開発(OS5-1 安全,安心,低環境負荷の設計,OS5 安全・安心・防災・環境負荷低減,オーガナイズド・セッション)

Development of optimum manufacturing technologies of radial plates for the ITER toroidal field coils

Japan Atomic Energy Agency is studying rational manufacturing method and developing the optimum manufacturing technologies of the radial plates used in the toroidal field coils for the International Thermonuclear Experimental Reactor (ITER) in collaboration with the Japanese industries. Three sector form pieces were cut by plasma cutting machine from a hot rolled plate without any difficulties and one of them was machined to a 1.32-m long curved segment of the radial plate having the same size as the actual one. However, unacceptable large deformation about 5 mm flatness, which was not observed in 1-m long straight radial plate, was found after intermediate machining. Since it would be caused by groove direction against the hot rolled direction and/or curved shape of grooves, two trial manufactures of 0.4-m long straight radial plates have been performed to clarify the cause of the large deformation. Detailed investigation showed that the large deformation could be avoided if the groove direction would have been parallel to a rolling direction of the plate. Welding trials by using fiber laser technique was also performed and penetration of 15 mm could be obtained in a welding speed of 0.1 m/min at 5 kW laser power. An optimum manufacturing method has been proposed based on the development of manufacturing technologies.

Design of a Biotech Clinical Trial Manufacturing Facility

Design of a Biotech Clinical Trial Manufacturing Facility

Trial manufacture and use appraisal of the wheelchair traction unit

Trial manufacture and use appraisal of the wheelchair traction unit