Delta Electronics, Inc.

Jia-Ming Wu

Ching-Hsiung Tsai

Yu-Xian Huang

You-Chiuan Hsu

Chung-Chan Hsu

Yi-Lun Ho

Kuo-Yuan Hung

A method for determining an abnormal processing of a processing machine is disclosed, and includes: obtaining an acceleration signal corresponding to an acceleration of a tool tip from an accelerometer arranged on a tool-end of the processing machine; performing an integral process to the acceleration signal to generate a movement information; obtaining a motor position information of a motor used to bring the tool-end to move; respectively performing a coordinate alignment process to the movement information and the motor-position information to generate a transformed movement information and a position vector respectively being described based on a workpiece-end coordinates system used by a workpiece-end of the processing machine; combining the transformed movement information and the position vector to generate a relative movement value between the tool tip and the workpiece-end; and, determining whether an abnormal processing occurs based on the relative movement value.

Processing machine and determining method for determining abnormal processing of the processing machine

A speed reducing device includes a motor and a speed reducing mechanism. The motor includes a stator portion, a shaft portion and rotator portion. The rotator portion includes first and second eccentric rings. The speed reducing mechanism includes first, second and third roller assemblies and first and second cycloid disc sets. These roller assemblies include first rollers, second rollers and third rollers. The first cycloid disc set is mounted around the first eccentric ring, and includes first teeth and second teeth. The second cycloid disc set is mounted around the second eccentric ring, and includes third teeth and fourth teeth. The first teeth are contacted with the first rollers. The third teeth are contacted with the second rollers. The second teeth and the fourth teeth are contacted with the third rollers.

Speed reducing device having power source

A cycloid speed reducer includes two rotating disc assemblies. Each rotating disc assembly includes two cycloid discs. In other words, the cycloid speed reducer has four cycloid discs to be contacted with the corresponding rollers. Consequently, the load withstood by each cycloid disc is reduced. Since the cycloid speed reducer has stronger structural strength, the cycloid speed reducer can be applied to the high-load circumstance. Moreover, an eccentric assembly of the eccentric device includes plural eccentric cylinders. The eccentric cylinders are installed within the axle holes of the corresponding cycloid discs. Due to the plural eccentric cylinders, the eccentric direction of two cycloid discs is opposite to the eccentric direction of the other two cycloid discs. Consequently, it is not necessary to install an additional weight compensation device in the cycloid speed reducer to compensate the dynamic equilibrium.

Cycloid speed reducer

A speed reducer includes a first transmission shaft, an eccentric wheel, a first roller assembly, a rotating wheel, a second roller assembly and a second transmission shaft. The rotating wheel includes a main body and an axle hole. The main body includes a convex structure and a concave structure. The convex structure is protruded from an outer periphery of the main body and has outer teeth. The outer teeth are contacted with the corresponding first rollers. The concave structure is concavely formed in a surface of the main body and includes inner teeth. The inner teeth are contacted with plural second rollers of the second roller assembly. The speed reducer of the present invention is an epicycloid-epicycloid speed reducer or a hypocycloid-hypocycloid speed reducer. Since the speed reducer is designed to have four operating situations, the speed reducer can have various reduction ratios.

Speed reducer

A method for estimating load inertia and system for controlling motor speed using inverse model are provided, suitable for an alternating current (AC) servo module. An inverse system is connected to an actual system to inversely deduce a substantial torque output, wherein when the value of the speed signal generated by the actual system gradually increases, a net inertia ratio is accumulated; whereas when the value of the speed signal generated by the actual system increases to a fixed value, the net inertia ratio is updated.

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Taoyuan, Taiwan

Jia-Ming Wu