External power supply system for spindle

Patent metadata

Field	Value
Publication number	US-11949226-B2
Application number	US-202117378976-A
Country	US
Kind code	B2
Filing date	Jul 19, 2021
Priority date	Jul 28, 2020
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

An external power supply system for spindles is revealed. The external power supply system includes a tool holder, a rectifier circuit, an overvoltage protection circuit. and a buck/boost converter. The tool holder receives an external power source of a spindle while the rectifier circuit converts the external power source into a rectified output signal with a power factor through step-down transformation. The overvoltage protection circuit is used to check whether the rectified output signal is larger than an overvoltage signal for outputting an operating potential or a non-operating potential. The buck/boost converter is used for receiving the rectified output signal with the power factor and converting the rectified output signal to an output voltage according to the power factor. Then the output voltage is provided to a load of a low voltage power supply, a high voltage power supply, or a constant voltage power supply.

First claim

What is claimed is:

1. An external power supply system for a spindle which is connected to a control system providing power to a drive system able to generate an electric field having a power factor and transfer the electric field to a positive electrode and a negative electrode comprising:
a tool holder which includes a pull stud, an exterior conical surface, an end ring, a contact positive electrode, and a contact negative electrode; the contact positive electrode and the contact negative electrode are mounted to the exterior conical surface and used for transferring an external power source having the power factor while being aligned with the positive electrode and the negative electrode of the spindle and further receiving the external power source with the power factor;
a rectifier circuit which is used for converting the external power source with the power factor into a rectified output signal with the power factor through step-down transformation; the rectifier circuit allows a transmission level to pass according to a contact potential input by the external power source, applies proportioning control with integral and derivative functions to an output waveform of the transmission level, and then transforms a modulation level which is used for control of the transmission level of the rectified output signal to be no larger than a threshold;
an overvoltage protection circuit used to check whether the rectified output signal is larger than an overvoltage signal; the overvoltage signal is at an operating potential when the rectified output signal is smaller than the overvoltage signal while the overvoltage signal is at a non-operating potential once the rectified output signal is larger than the overvoltage signal; and
a buck/boost converter which is coupled to the overvoltage protection circuit for receiving the rectified output signal output at the operating potential and converting the rectified output signal to an output voltage according to the power factor of the rectified output signal; the output voltage is provided to a load of a power supply which is selected from the group consisting of a low voltage power supply, a high voltage power supply, and a constant voltage power supply.

2. An external power supply system for a spindle which is connected to a control system providing power to a drive system able to generate an electric field having a power factor and transfer the electric field to a positive electrode and a negative electrode comprising:
a tool holder which includes a pull stud, an exterior conical surface, an end ring, a contact positive electrode, and a contact negative electrode; the contact positive electrode and the contact negative electrode are mounted to a surface of the end ring and used for transferring an external power source having the power factor while being aligned with the positive and the negative electrodes of the spindle and further receiving the external power source with the power factor,
a rectifier circuit which is used for converting the external power source with the power factor into a rectified output signal with the power factor through step-down transformation; the rectifier circuit allows a transmission level to pass according to a contact potential input by the external power source, applies proportioning control with integral and derivative functions to an output waveform of the transmission level, and then transforms a modulation level which is used for control of the transmission level of the rectified output signal to be no larger than a threshold;
an overvoltage protection circuit used to check whether the rectified output signal is larger than an overvoltage signal; the overvoltage signal is at an operating potential when the rectified output signal is smaller than the overvoltage signal while the overvoltage signal is at a non-operating potential once the rectified output signal is larger than the overvoltage signal; and
a buck/boost converter which is coupled to the overvoltage protection circuit for receiving the rectified output signal output at the operating potential and converting the rectified output signal to an output voltage according to the power factor of the rectified output signal; the output voltage is provided to a load of a power supply which is selected from the group consisting of a low voltage power supply, a high voltage power supply, and a constant voltage power supply.

3. An external power supply system for a spindle which is connected to a control system not only providing power to a drive system and an equidistant firing control for control of a direct current trigger to deal with at least one trigger event but also receiving a trigger signal through a first communication module while the drive system is able to generate an electric field having a power factor and transfer the electric field to a positive electrode and a negative electrode comprising:
a tool holder which includes a pull stud, an exterior conical surface, an end ring, a contact positive electrode, and a contact negative electrode; the contact positive electrode and the contact negative electrode are used for receiving an external power source with the power factor while being aligned with the positive electrode and the negative electrode of the spindle;
a rectifier circuit which is used for converting the external power source with the power factor into a rectified output signal with the power factor through step-down transformation; the rectifier circuit allows a transmission level to pass according to a contact potential input by the external power source, applies proportioning control with integral and derivative functions to an output waveform of the transmission level, and then transforms a modulation level which is used for control of the transmission level of the rectified output signal to be no larger than a threshold;
an overvoltage protection circuit used to check whether the rectified output signal is larger than an overvoltage signal; the overvoltage signal is at an operating potential when the rectified output signal is smaller than the overvoltage signal while the overvoltage signal is at a non-operating potential once the rectified output signal is larger than the overvoltage signal; and
a buck/boost converter which is coupled to the overvoltage protection circuit for receiving the rectified output signal output at the operating potential and converting the rectified output signal to an output voltage according to the power factor of the rectified output signal;
a direct current (DC) trigger which is activated by receiving the output voltage, then receiving the equidistant firing control from the control system to deal with the trigger event and generate a trigger shaper, and generating a trigger signal sent to an automatic transmitter according to the trigger shaper; and
a second communication module which receives the output voltage to be activated; the second communication module is electrically coupled to the automatic transmitter for transmission so that the second communication module is connected to the first communication module; the second communication module is completely controlled by the automatic transmitter for sending the trigger signal from the DC trigger to the first communication module.

Assignees

• Univ Nat Chung Hsing

Inventors

• Liu Chien-Hung
• Li Yu-Hung

Classifications

• H02H7/09 Primary

  against over-voltage; against reduction of voltage; against phase interruption · CPC title

• H02H1/0007

  concerning the detecting means (in general G01R or other subclasses of G01; reed switches H01H71/2445) · CPC title

• H02M7/04

  by static converters · CPC title

• H02M1/32 Primary

  Means for protecting converters other than automatic disconnection · CPC title

• H02M1/4225

  using a non-isolated boost converter · CPC title