A transmission arrangement such as for energy and/or signal transmission, optionally for use in a machining center, respectively a turning and/or milling center, comprising a clamping unit comprising an outer housing of a preferably cylindrical basic shape, an inner housing received within the outer housing, as well as an inner cylinder held within the inner housing to be adjustable in an actuating direction A, said inner cylinder being configured to transmit a compressive or tensile force for clamping purposes, wherein the inner housing is supported against the outer housing via springs, and is displaceably mounted in the actuating direction A with respect to the outer housing and thus forms a spring force storage, wherein an electric motor is arranged integrated within the clamping unit to apply force in the actuating direction A to the inner cylinder via intermediate gear means, a console having a rotary table mounted therein to be rotatable, at least one first transmission device connected to the console and at least one second transmission device connected to the clamping unit, wherein the clamping unit is releasably fastened on the rotary table, and first and second transmission devices are configured to transmit electrical energy for driving the electric motor in a non-contact, preferably inductive manner between a first transmission device and a second transmission device.

One embodiment provides a quick-connect and rotation system for impeller coupling including: an impeller comprising: a mixer end; and a first attachment end; the first attachment end comprising a first member that is diametrically magnetized; and an motor comprising: a rotational shaft with a second attachment end comprising a second member that is diametrically magnetized; wherein the first attachment end and the second attachment end are complementary to each other; and wherein the motor imparts rotational torque, via a magnetic field between the first member and the second member, on the first attachment end when the first attachment end and the second attachment end are connected.

A transfer apparatus using an electrostatic attraction includes an electrostatic chuck for attracting and placing a workpiece as a transfer member on a placement surface by electrostatic attraction. The electrostatic chuck is grounded by an earth via a ground electrode after the electrostatic chuck receives electric power from a power supply surface of a power source via power receiving electrodes of the electrostatic chuck, so that the electrostatic chuck is configured to attract and place the workpiece on the placement surface by electrostatic attraction in a state where electrostatic balance is broken.

A transfer apparatus using an electrostatic attraction includes an electrostatic chuck for attracting and placing a workpiece as a transfer member on a placement surface by electrostatic attraction. The electrostatic chuck is grounded by an earth via a ground electrode after the electrostatic chuck receives electric power from a power supply surface of a power source via power receiving electrodes of the electrostatic chuck, so that the electrostatic chuck is configured to attract and place the workpiece on the placement surface by electrostatic attraction in a state where electrostatic balance is broken.

An electrostatic chuck includes a ceramic dielectric substrate having a first major surface on which an object to be processed is mounted, and a second major surface, the ceramic dielectric substrate being a polycrystalline ceramic sintered body, an electrode layer provided on the ceramic dielectric substrate, a base plate provided on a side of the second major surface and supporting the ceramic dielectric substrate, and a heater provided between the electrode layer and the base plate. The base plate includes a through hole piercing the base plate and a communication path passing a medium adjusting a temperature of the object to be processed, and when viewed in a direction perpendicular to the first major surface, at least a part of the heater exists on a side of the through hole as viewed from a first portion of the communication path which is closest to the through hole.

An electrostatic chuck includes a ceramic dielectric substrate having a first major surface on which an object to be processed is mounted, and a second major surface, the ceramic dielectric substrate being a polycrystalline ceramic sintered body, an electrode layer provided on the ceramic dielectric substrate, a base plate provided on a side of the second major surface and supporting the ceramic dielectric substrate, and a heater provided between the electrode layer and the base plate. The base plate includes a through hole piercing the base plate and a communication path passing a medium adjusting a temperature of the object to be processed, and when viewed in a direction perpendicular to the first major surface, at least a part of the heater exists on a side of the through hole as viewed from a first portion of the communication path which is closest to the through hole.

A release unit for a machine tool spindle, in particular motor spindle, for releasing a tool clamp, wherein the release unit comprises at least one adjustment element which can be linearly adjusted along an adjustment path for actuating the tool clamp, which release unit reduces the structural and/or economic complexity. This is achieved according to the invention in that the release unit is constructed as an electric motor which comprises an electromagnetic drive system having a hollow-cylindrical rotor shaft which rotates about a rotation axis, in that the linearly adjustable adjustment element is constructed as a spindle element of a conversion unit for converting the rotation of the electric motor into a linear adjustment and in that the rotor shaft is constructed as a spindle nut of the conversion unit which rotates about the rotation axis.

A release unit for a machine tool spindle, in particular motor spindle, for releasing a tool clamp, wherein the release unit comprises at least one adjustment element which can be linearly adjusted along an adjustment path for actuating the tool clamp, which release unit reduces the structural and/or economic complexity. This is achieved according to the invention in that the release unit is constructed as an electric motor which comprises an electromagnetic drive system having a hollow-cylindrical rotor shaft which rotates about a rotation axis, in that the linearly adjustable adjustment element is constructed as a spindle element of a conversion unit for converting the rotation of the electric motor into a linear adjustment and in that the rotor shaft is constructed as a spindle nut of the conversion unit which rotates about the rotation axis.

A wheel spraying protection device is composed of a hollow mounting rack, an electric cylinder, a tray, an electromagnetic chuck, a sleeve, a piston, a soft rubber cover, a support column, an end cover, high temperature resistant plastic protective plugs, springs and iron posts. The device can play a role in protecting during a wheel spraying process, and solves the problem that a flange face, a center hole and bolt hole conical surfaces are adhered with paint. The device has the characteristics of advanced process, easiness in manufacturing, simple structure, strong function and the like.

A wheel spraying protection device is composed of a hollow mounting rack, an electric cylinder, a tray, an electromagnetic chuck, a sleeve, a piston, a soft rubber cover, a support column, an end cover, high temperature resistant plastic protective plugs, springs and iron posts. The device can play a role in protecting during a wheel spraying process, and solves the problem that a flange face, a center hole and bolt hole conical surfaces are adhered with paint. The device has the characteristics of advanced process, easiness in manufacturing, simple structure, strong function and the like.