- Email: [email protected]
9436756 Screw tightening robot
102
Abstracts' 1994 JSAE Autumn ('oncention / J S A E Ret~iew 16 (1995) 95-113
Fixtures (C/Fs). In 1989 Toyota introduced the first Coordinate Measuring Machines (CMMs), into the field of body measurement and uscd them as the basis for a comprehensive quality assurance system. This system supports the four major quality assurance processes (quality planning, pre-measurement, measurement, and analysis). And then this system has allowed us to achieve innovations in the car body quality assurance processes, transforming a previously tedious and lime-consuming task into an efficient and user-friendly one.
9436701 Study of Optimization Method for Structural Parts Using CAE: Application of Structural Optimization Codes OPTISHAPE and GENESIS to A Suspension Arm Keisuke Kurumatani, Satoshi ho, Junichi Fukushima, Keisuke Hayakawa (Toyota Motor Corporation), pp. 277-280, 15 figs., 6 refs. In order to confirm the effectiveness of the design method using optimization technique, the structural optimization codes OPTISHAPI: and GENESIS are applied to a suspension arm. Topology (outline shape) of the structure is optimized using OPT1SHAPE. then the detail shape is determined by GENESIS. As a result, wc have achieved a significanl mass reduction from the conventional structure which is designed by usual trial and error approach. [t can be said that the design method using structural optimization is more effective than the conventional approach for designing structural pans.
9436710 Weight Reduction of Cab-white Using Structural Optimization Method Tomofuyu Matsuuki, Yoshinari Yamanaka (ISUZU ADVANCED ENGINEERING CENTER, LTD.), pp. 281-284, 5 figs., 5 tables, 5 refs. A requiremant to weight reduction is rising because of recently problems to environmental disruption and to natural resources are worsen. To solve these problems the optimization method which based on mathematical programming is paying attention. So this paper reports an exampie of weight reduction for cab white by applying structural optimization method. This method uses pseudo least square method with multiple constraints.
9436729 An Integrated C A D / C A M / C A T System for Body Assembly Jigs: Accurate Jig Machining System by Continuous Operations of C A D / C A M / C A T Satoshi Tsutsui, Masayuki Akaishi, Masao Goto (Toyota Motor Corporation), Toshikazu Makino, Ryuichi Ogawa (Toyota Caelum Incorporated), pp. 285-288, 10 figs. For manufacturing body assembly jigs. we have developed a system where all the processes from jig design to accurate jig machining are performed by continuos operations of C A D / C A M / C A T , and a self-adjusting jig marker which measures and machines jigs in assembled condition by one-chucking method and is optimal to accurate machining of jigs. This development has led to improvement in the quality of jigs and the manufacturing efficiency.
9436738 Development of High Precision Measuring Technology of Aluminum Casting with Image Stabilization Masataka Toda, Takeshi Kariya, Hiroyuki Suganuma (AISIN SEIKI CO.. LTD), pp. 289-292, 13 figs. Problems have been experienced in an automatic parts feeding system that employed image processing technologies, where the measurements cannot be made because of an image instability due to the illumination level changes from day and night or lighting deterioration. In coping with this problem, we developed a unique image stabilization technique of our own using disturbed lighting also as illumination, and applied it to the production line.
9436747 Implementation of Image Processing Technologies for Automobile Production Lines: Application of Alloy Wheel Classification Junji Matsuura, Takao Miyatani, Atsuhito lnagaki (Toyota Motor Co., Ltd), Kazutoshi Sukigara (Toyota Central R&D Labs., lnc), pp. 293-296. 5 figs,, 2 tables, 3 refs.
We have developed an image processing system which should be competent for automobile production lines. This system has been applied to classification processes in alloy wheel production lines. In this application, it is required for vision systems to distinguish the various types of designs of alloy wheels. To deal with so many colors and brightness of surface of alloy wheels in dusty atmosphere, the robustness of the algorithm is needed. In this paper, we describe how we develope a robust algorithm and how we apply the system which can classify any alloy wheels at any stages of its production lines.
9436756
Screw Tightening Robot Matsumura, Masafumi Ito, Sigeyuki (NIPPONDENSO Co., Ltd.), pp. 297-300, 7 figs. Screw tightening robot was developed for a variety of screws. This robot controls a screw driving AC servo motor. For the detection of accurate tightening torque, we developed new measurement and correction method of motor electrical current. The measurement and the correction are executed on real time and the robot controller controls the screw-driving process as the 4th joint's motion of the robot, therefore this robot can make accurate and reliable screw tightening with no extra cost. 9436765 Development of a Radio-Controlled Multi-Loader Truck Used in an Iron Foundry Shinya Ishizeki, Ikurou Notsu, Sadahiro Takahashi, Yoshito Watanabe (Nissan Diesel Motor Co., Ltd), pp. 301304, 10 figs., 2 tables, 4 refs. A Radio-controlled multi-loader truck used in an iron foundry was developed for purposes reducing operator's working load and number of operators being engaged in the task of loading of a bucket on the truck and unloading it. The operator can remote-control actuators for functions necessary for driving the vehicle, such as starting, accelerating and braking the vehicle, gear-shifting, and steering, and also for loading and unloading the bucket, via a manipulator. An enhanced fail-safe function is included in the system to ensure an operational safety.
9436783 Development of High Fatirue-Resistance Steel Wires for Engine Valve Springs Sadamu Matsumoto, Teruyuki Murai, Norihito Yamao (Sumitomo Electric Industries, LTD), pp. 305-308, 15 figs., 6 tables, 3 refs. Market demand for reducing weight and size in engine valve springs requires a higher anti-fatigue property in steel wires for the springs. High strength materials are necessary to meet the demand. However, resistance to flaw becomes lower with increasing strength. Thus, micro flaws that are not harmful on conventional materials act as starting points for fatigue fracture and prevent improving the anti-fatigue property. We have succeed in removing harmful microflaws with electropolishing and obtained steel wires having a dramatically improved anti-fatigue properties.
9436792 Development of a Torsional Damper Spring with High Fatigue Resistance for Automotive Clutch Disc Osamu Nakano, Masami Suzuki (Toyota Motor Corporation), Yoshiro Koyasu (Nippon Steel Corporation), Jiro Tominaga (Suzuki Metal Industry Co., Ltd.), Yoshinobu Izawa (Togo Seisakusyo Corporation), pp. 309-312, 12 figs., 5 tables, 2 refs. For the purpose of reducing torsional rigidity in conventional size of a clutch disc, we have developed a new torsional damper spring. The new spring has the following two adoptions for fatigue resistance: (1) A newly developed steel wire with resistance to the core-softening caused by nitriding. (2) A two-step shot peening method by the use of harder steel shot to get the best profile of residual stress. Evaluation of the fatigue characteristics of the new spring has revealed that it has about 1.35 times fatigue strength of conventional springs. The clutch disc with the new spring has made it possible to extinguish the rattling noise.
9436800
Analysis of car urethane seats Toshihiro Tachikawa (NHK Spring R&D Center), Takayoshi Kashiwamura, Noriaki Yamada, Hiroshi Ozawa. Takuro Higuchi (NHK Spring), pp. 313-316, 16 figs., 3 refs,
Abstracts' 1994 JSAE Autumn ('oncention / J S A E Ret~iew 16 (1995) 95-113
Fixtures (C/Fs). In 1989 Toyota introduced the first Coordinate Measuring Machines (CMMs), into the field of body measurement and uscd them as the basis for a comprehensive quality assurance system. This system supports the four major quality assurance processes (quality planning, pre-measurement, measurement, and analysis). And then this system has allowed us to achieve innovations in the car body quality assurance processes, transforming a previously tedious and lime-consuming task into an efficient and user-friendly one.
9436701 Study of Optimization Method for Structural Parts Using CAE: Application of Structural Optimization Codes OPTISHAPE and GENESIS to A Suspension Arm Keisuke Kurumatani, Satoshi ho, Junichi Fukushima, Keisuke Hayakawa (Toyota Motor Corporation), pp. 277-280, 15 figs., 6 refs. In order to confirm the effectiveness of the design method using optimization technique, the structural optimization codes OPTISHAPI: and GENESIS are applied to a suspension arm. Topology (outline shape) of the structure is optimized using OPT1SHAPE. then the detail shape is determined by GENESIS. As a result, wc have achieved a significanl mass reduction from the conventional structure which is designed by usual trial and error approach. [t can be said that the design method using structural optimization is more effective than the conventional approach for designing structural pans.
9436710 Weight Reduction of Cab-white Using Structural Optimization Method Tomofuyu Matsuuki, Yoshinari Yamanaka (ISUZU ADVANCED ENGINEERING CENTER, LTD.), pp. 281-284, 5 figs., 5 tables, 5 refs. A requiremant to weight reduction is rising because of recently problems to environmental disruption and to natural resources are worsen. To solve these problems the optimization method which based on mathematical programming is paying attention. So this paper reports an exampie of weight reduction for cab white by applying structural optimization method. This method uses pseudo least square method with multiple constraints.
9436729 An Integrated C A D / C A M / C A T System for Body Assembly Jigs: Accurate Jig Machining System by Continuous Operations of C A D / C A M / C A T Satoshi Tsutsui, Masayuki Akaishi, Masao Goto (Toyota Motor Corporation), Toshikazu Makino, Ryuichi Ogawa (Toyota Caelum Incorporated), pp. 285-288, 10 figs. For manufacturing body assembly jigs. we have developed a system where all the processes from jig design to accurate jig machining are performed by continuos operations of C A D / C A M / C A T , and a self-adjusting jig marker which measures and machines jigs in assembled condition by one-chucking method and is optimal to accurate machining of jigs. This development has led to improvement in the quality of jigs and the manufacturing efficiency.
9436738 Development of High Precision Measuring Technology of Aluminum Casting with Image Stabilization Masataka Toda, Takeshi Kariya, Hiroyuki Suganuma (AISIN SEIKI CO.. LTD), pp. 289-292, 13 figs. Problems have been experienced in an automatic parts feeding system that employed image processing technologies, where the measurements cannot be made because of an image instability due to the illumination level changes from day and night or lighting deterioration. In coping with this problem, we developed a unique image stabilization technique of our own using disturbed lighting also as illumination, and applied it to the production line.
9436747 Implementation of Image Processing Technologies for Automobile Production Lines: Application of Alloy Wheel Classification Junji Matsuura, Takao Miyatani, Atsuhito lnagaki (Toyota Motor Co., Ltd), Kazutoshi Sukigara (Toyota Central R&D Labs., lnc), pp. 293-296. 5 figs,, 2 tables, 3 refs.
We have developed an image processing system which should be competent for automobile production lines. This system has been applied to classification processes in alloy wheel production lines. In this application, it is required for vision systems to distinguish the various types of designs of alloy wheels. To deal with so many colors and brightness of surface of alloy wheels in dusty atmosphere, the robustness of the algorithm is needed. In this paper, we describe how we develope a robust algorithm and how we apply the system which can classify any alloy wheels at any stages of its production lines.
9436756
Screw Tightening Robot Matsumura, Masafumi Ito, Sigeyuki (NIPPONDENSO Co., Ltd.), pp. 297-300, 7 figs. Screw tightening robot was developed for a variety of screws. This robot controls a screw driving AC servo motor. For the detection of accurate tightening torque, we developed new measurement and correction method of motor electrical current. The measurement and the correction are executed on real time and the robot controller controls the screw-driving process as the 4th joint's motion of the robot, therefore this robot can make accurate and reliable screw tightening with no extra cost. 9436765 Development of a Radio-Controlled Multi-Loader Truck Used in an Iron Foundry Shinya Ishizeki, Ikurou Notsu, Sadahiro Takahashi, Yoshito Watanabe (Nissan Diesel Motor Co., Ltd), pp. 301304, 10 figs., 2 tables, 4 refs. A Radio-controlled multi-loader truck used in an iron foundry was developed for purposes reducing operator's working load and number of operators being engaged in the task of loading of a bucket on the truck and unloading it. The operator can remote-control actuators for functions necessary for driving the vehicle, such as starting, accelerating and braking the vehicle, gear-shifting, and steering, and also for loading and unloading the bucket, via a manipulator. An enhanced fail-safe function is included in the system to ensure an operational safety.
9436783 Development of High Fatirue-Resistance Steel Wires for Engine Valve Springs Sadamu Matsumoto, Teruyuki Murai, Norihito Yamao (Sumitomo Electric Industries, LTD), pp. 305-308, 15 figs., 6 tables, 3 refs. Market demand for reducing weight and size in engine valve springs requires a higher anti-fatigue property in steel wires for the springs. High strength materials are necessary to meet the demand. However, resistance to flaw becomes lower with increasing strength. Thus, micro flaws that are not harmful on conventional materials act as starting points for fatigue fracture and prevent improving the anti-fatigue property. We have succeed in removing harmful microflaws with electropolishing and obtained steel wires having a dramatically improved anti-fatigue properties.
9436792 Development of a Torsional Damper Spring with High Fatigue Resistance for Automotive Clutch Disc Osamu Nakano, Masami Suzuki (Toyota Motor Corporation), Yoshiro Koyasu (Nippon Steel Corporation), Jiro Tominaga (Suzuki Metal Industry Co., Ltd.), Yoshinobu Izawa (Togo Seisakusyo Corporation), pp. 309-312, 12 figs., 5 tables, 2 refs. For the purpose of reducing torsional rigidity in conventional size of a clutch disc, we have developed a new torsional damper spring. The new spring has the following two adoptions for fatigue resistance: (1) A newly developed steel wire with resistance to the core-softening caused by nitriding. (2) A two-step shot peening method by the use of harder steel shot to get the best profile of residual stress. Evaluation of the fatigue characteristics of the new spring has revealed that it has about 1.35 times fatigue strength of conventional springs. The clutch disc with the new spring has made it possible to extinguish the rattling noise.
9436800
Analysis of car urethane seats Toshihiro Tachikawa (NHK Spring R&D Center), Takayoshi Kashiwamura, Noriaki Yamada, Hiroshi Ozawa. Takuro Higuchi (NHK Spring), pp. 313-316, 16 figs., 3 refs,