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US 10,661,469 B2Granted
Woodworking lathe control system
AssigneeRikon Power Tools, Inc.
InventorsWuzheng Duan, Libin Sun, Liting Zhao, Min Zhang
Life of this patent
Estimating the term…
Abstract
Lathe control systems and methods are described including stopping a motor prior to reversing direction as well as methods and systems that implement voltage and/or current protection thresholds.
Claims11
A lathe comprising:
- an electrical motor drivingly coupled to a shaft of the lathe;
- a controller that controls operation of the motor;
- and
- at least one detector that outputs a signal to the controller, wherein the at least one detector detects an electrical characteristic of at least one of an electrical bus and the electrical motor, wherein the controller controls at least one aspect of the electrical motor's operation based on a comparison of the detected electrical characteristic to a preset threshold, and wherein the electrical characteristic is a motor current, and the preset threshold is at least one of a hardware protection point, a software protection point, or a locked-rotor protection point.
1 more element
A woodworking lathe control system, comprising:
- a microcontroller, a forward and reverse rotation key detection circuit, a motor, and an insulated-gate bipolar transistor (IGBT) drive circuit, the forward and reverse rotation key detection circuit being connected to the microcontroller;
- and
- further comprising a bus voltage sampling module, a motor voltage sampling module, and a current sampling module, being configured to detect a bus voltage, a motor voltage, and a motor current, respectively, and transmit detected values to the microcontroller, the microcontroller controlling a motor motion by using the IGBT drive circuit, wherein
- the microcontroller further comprises a voltage-protection-point setting module and a current-protection-point setting module, the voltage protection point comprising a bus over-voltage protection point, a bus under-voltage protection point, and a motor voltage protection point, and the current protection point comprising a hardware protection point, a software protection point, and a locked-rotor protection point.
1 more element
Dependencies are inferred from the claim text.