Abstract: A high frequency vibration spindle system with non-contact power transmission and a method for manufacturing a restraining member used therein are disclosed. The high frequency vibration spindle system comprises: an electric power transmission device including a first induction module and a second induction module, wherein the second induction module is disposed at either a spindle or a toolholder and is adapted to receive an electric power from the first induction module in a non-contact electromagnetic induction manner; a transducer adapted to vibrate the tool and disposed at the toolholder and electrically connected with the second induction module to receive the electric power; and-a restraining member located between the first induction module and the second induction module. With the restraining member, the structural strength and stability of the second induction module can be improved, thereby increasing the maximum rotational speed of the high frequency vibration spindle system.

Abstract: A system for measuring periodic displacement of an object in periodic motion at a first frequency includes a light source module, a camera module and a processor. The light source module is configured to periodically illuminate the object at a second frequency that is different from the first frequency and that is related to a sum of the first frequency and a first constant. The camera module is configured to take pictures of the object. The processor is in communication with the camera module in order to receive the pictures, and is configured to determine periodic displacement of the object based on the pictures.

Abstract: A replaceable tool holder includes a connector adapted to be engaged with and driven to rotate by a spindle, a tool chuck, of which an end is detachably engaged with the connector and another end is adapted to engage a tool, and an electronic component provided in a chamber inside the tool chuck. The connector is provided with a non-contact power transmission device. A passage is provided in the connector and the tool chuck, wherein a wire is disposed in the passage, transmitting electric power to serve the need of the electronic component. With such design, one connector can be used to connect tool chucks of different types or models. Therefore, a user could, as required, replace the connecting interface between the tool holder and the spindle or the connecting interface between the tool holder and the tool. Furthermore, the electronic component could be steadily supplied with electric power.

Abstract: A power and signal transmission device for a spindle of a machine tool is provided. The power and signal transmission device includes a spindle fixing portion, a shaft rotating portion, a power transmission component and a signal transmission component. The spindle fixing portion is provided with a power input end, a primary side power induction coil, a secondary side signal induction coil and at least one signal output end. The shaft rotating portion is provided with a joining end surface for bonding to a holder, a secondary side power induction coil and a primary side signal induction coil, and is rotatable with respect to the spindle fixing portion. The power transmission component transmits an electrical energy from the power input end. The signal transmission component transmits a holder signal to the signal output end. Each of the power and signal transmission components includes at least one elastic pogo pin.

Abstract: A power and signal transmission device for a spindle of a machine tool is provided. The power and signal transmission device includes a spindle fixing portion, a shaft rotating portion, a power transmission component and a signal transmission component. The spindle fixing portion is provided with a power input end, a primary side power induction coil, a secondary side signal induction coil and at least one signal output end. The shaft rotating portion is provided with a joining end surface for bonding to a holder, a secondary side power induction coil and a primary side signal induction coil, and is rotatable with respect to the spindle fixing portion. The power transmission component transmits an electrical energy from the power input end. The signal transmission component transmits a holder signal to the signal output end. Each of the power and signal transmission components includes at least one elastic pogo pin.

Abstract: A machining device is adapted to be provided on a mount provided with a toolholder. The toolholder is controllable to rotate and is adapted to be engaged with a tool. A primary coil engaged with the toolholder includes a first ferrite core and a first coil assembly detachably engaged with the first ferrite core. The first coil assembly is modular molded, and is adhered to be an annular body having a first hollow portion. A piezoelectric actuator is electrically connected to the primary coil to drive the tool to vibrate. The secondary coil includes a second ferrite core and a second coil assembly detachably engaged with the second ferrite core. The second coil assembly is modular molded to be an annular body having a second hollow portion.

Abstract: A replaceable tool holder includes a connector adapted to be engaged with and driven to rotate by a spindle, a tool chuck, of which an end is detachably engaged with the connector and another end is adapted to engage a tool, and an electronic component provided in a chamber inside the tool chuck. The connector is provided with a non-contact power transmission device. A passage is provided in the connector and the tool chuck, wherein a wire is disposed in the passage, transmitting electric power to serve the need of the electronic component. With such design, one connector can be used to connect tool chucks of different types or models. Therefore, a user could, as required, replace the connecting interface between the tool holder and the spindle or the connecting interface between the tool holder and the tool. Furthermore, the electronic component could be steadily supplied with electric power.

Abstract: A high frequency vibration spindle system with non-contact power transmission and a method for manufacturing a restraining part used therein are disclosed. The high frequency vibration spindle system comprises: a spindle; a toolholder; an electric power transmission device including a first induction module and a second induction module, wherein the second induction module is disposed at the spindle or the toolholder, and the second induction module is adapted to receive an electric power from the first induction module in a non-contact electromagnetic induction manner; a transducer adapted to be controlled to vibrate the tool and being disposed at the toolholder and electrically connected with the second induction module to receive the electric power; and a restraining part located between the first induction module and the second induction module.

Abstract: A high frequency vibration spindle system which includes a spindle having a spindle housing and a spindle shaft disposed in the spindle housing; a toolholder, engaged with the spindle and adapted to be engaged with a tool; an electric power transmission device disposed at the front end or a rear end of the spindle, including a first coil and a second coil; the first coil is disposed on the spindle housing, and the second coil is disposed on the spindle shaft to be rotated with the spindle shaft coaxially; the first coil and the second coil are spaced with a gap; the second coil is adapted to receive an electric power from the first coil with a non-contact induction method; and a transducer, adapted to be controlled to vibrate the tool and disposed in the toolholder and electrically connected with the second coil to receive the electric power.

Abstract: A machining toolholder including a body, a horn and a piezoelectric actuator is disclosed. The body includes a center through hole extending in the axial direction therein. The center through hole includes a first hole section and a second hole section. The horn includes a first section and a second section which are disposed coaxially and connected with each other. Part of the first section is slidably inserted into the first hole section. The second section is connected to the body and engaged with a tool. Part of the surface of the second section contacts with a wall surface of the second hole section. The piezoelectric actuator fits around the horn and is controllable to drive the tool to vibrate. With this design, the machining toolholder could have good stiffness and connection stability, and could resist to the stress effectively.

Abstract: A high frequency vibration spindle system which includes a spindle having a spindle housing and a spindle shaft disposed in the spindle housing; a toolholder, engaged with the spindle and adapted to be engaged with a tool; an electric power transmission device disposed at the front end or a rear end of the spindle, including a first coil and a second coil; the first coil is disposed on the spindle housing, and the second coil is disposed on the spindle shaft to be rotated with the spindle shaft coaxially; the first coil and the second coil are spaced with a gap; the second coil is adapted to receive an electric power from the first coil with a non-contact induction method; and a transducer, adapted to be controlled to vibrate the tool and disposed in the toolholder and electrically connected with the second coil to receive the electric power.

Abstract: A machining toolholder including a body, a horn and a piezoelectric actuator is disclosed. The body includes a center through hole extending in the axial direction therein. The center through hole includes a first hole section and a second hole section. The horn includes a first section and a second section which are disposed coaxially and connected with each other. Part of the first section is slidably inserted into the first hole section. The second section is connected to the body and engaged with a tool. Part of the surface of the second section contacts with a wall surface of the second hole section. The piezoelectric actuator fits around the horn and is controllable to drive the tool to vibrate. With this design, the machining toolholder could have good stiffness and connection stability, and could resist to the stress effectively.

Abstract: A machining device is adapted to be provided on a mount provided with a toolholder. The toolholder is controllable to rotate and is adapted to be engaged with a tool. A primary coil engaged with the toolholder includes a first ferrite core and a first coil assembly detachably engaged with the first ferrite core. The first coil assembly is modular molded, and is adhered to be an annular body having a first hollow portion. A piezoelectric actuator is electrically connected to the primary coil to drive the tool to vibrate. The secondary coil includes a second ferrite core and a second coil assembly detachably engaged with the second ferrite core. The second coil assembly is modular molded to be an annular body having a second hollow portion.

Abstract: A machine tool includes a table, a main shaft, and an electric heating piece. The table includes an upright post and a main shaft support element connected to the upright post. The main shaft is rotatably disposed at the main shaft support element of the table. The electric heating piece is disposed at the main shaft support element of the table and positioned on a side of the main shaft, wherein the side of the main shaft manifests a lower thermal deformation level. The regulation of the electric heating piece minimizes the nonlinear thermal deformation of the main shaft, thereby enhancing processing precision.

Abstract: A multi-color off-axis digital holographic system and the imaging method thereof are disclosed. The multi-color off-axis digital holographic system comprises: a plurality of light emitting diodes, for provide a red (R) beam, a green (G) beam and a blue (B) beam; an interference object lens module, for receiving the R, G, and B beams to generate a beam containing an interference signal; a color imaging device, for receiving the beam containing the interference signal and thus forming a hologram on a surface of the color imaging device by holographic interference while registering the hologram; and a processing device, for receiving the registered hologram form the color imaging device; wherein the processing device perform a zero-filling and reconstructing operations upon the received hologram to obtain phase information of the R, G and B beams.

Abstract: A method for patterning polycrystalline indium tin oxide by using a Gaussian laser beam focused on an amorphous indium tin oxide layer is disclosed to pattern the non-crystalline amorphous indium tin oxide layer and transfer part of the amorphous indium tin oxide layer into polycrystalline indium tin oxide while the remaining amorphous indium tin oxide layer is etched due to etching selectivity of an etching solution. The method comprises: providing a substrate with an amorphous indium tin oxide layer thereon on a carrier; transferring the amorphous indium tin oxide layer in a predetermined area into a polycrystalline indium tin oxide layer by emitting a Gaussian laser beam focused on the amorphous indium tin oxide layer in the predetermined area; and removing the remaining amorphous indium tin oxide layer on the substrate by an etching solution to form a patterned polycrystalline indium tin oxide layer.

Abstract: A method for patterning polycrystalline indium tin oxide by using a Gaussian laser beam focused on an amorphous indium tin oxide layer is disclosed to pattern the non-crystalline amorphous indium tin oxide layer and transfer part of the amorphous indium tin oxide layer into polycrystalline indium tin oxide while the remaining amorphous indium tin oxide layer is etched due to etching selectivity of an etching solution. The method comprises: providing a substrate with an amorphous indium tin oxide layer thereon on a carrier; transferring the amorphous indium tin oxide layer in a predetermined area into a polycrystalline indium tin oxide layer by emitting a Gaussian laser beam focused on the amorphous indium tin oxide layer in the predetermined area; and removing the remaining amorphous indium tin oxide layer on the substrate by an etching solution to form a patterned polycrystalline indium tin oxide layer.

Abstract: A dual-receiving ultrasonic distance measuring equipment is disclosed, which uses a transmitter and two receivers, one of which serves as an objective and the other as a reference, to perform distance measurement. The transmitter and the reference receiver are fixedly installed on a phase adjusting platform, capable of adjusting a reference phase by fine-tuning the distance between the transmitter and the reference receiver. As the objective receiver is disposed on an object under measurement which is a distance away from the phase adjusting platform, there will be a phase shift due to the propagation of an ultrasonic wave from the transmitter as it is received by the two receivers. And thereby, the distance between the two receivers can be calculated based on the phase shift. The aforesaid ultrasonic distance measuring equipment can be applied in the positioning system of high precision machinery or other non-contact distance measuring system.

Abstract: A multi-color off-axis digital holographic system and the imaging method thereof are disclosed. The multi-color off-axis digital holographic system comprises: a plurality of light emitting diodes, for provide a red (R) beam, a green (G) beam and a blue (B) beam; an interference object lens module, for receiving the R, G, and B beams to generate a beam containing an interference signal; a color imaging device, for receiving the beam containing the interference signal and thus forming a hologram on a surface of the color imaging device by holographic interference while registering the hologram; and a processing device, for receiving the registered hologram form the color imaging device; wherein the processing device perform a zero-filling and reconstructing operations upon the received hologram to obtain phase information of the R, G and B beams.

Abstract: A laser interference system comprises a laser head, an interference lens, a reflector, an optic fiber transmission set, and an automatic laser path alignment unit having a photodiode, a data processing member and a control member. The photodiode is capable of sensing the position of the reflecting residual light of the reflector. The output signal of the position of the reflecting residual light is processed by the data processing member to become the electric voltage, which is transmitted to the control member for regulating the relative lateral displacement between the interference lens and the reflector.