An adjustable depth magnetic device comprises a switchable magnet, switchable magnet carrier, or switchable magnet integrated into a carrier, constrained by and locked into position by a receiver that is separate from or integrated into an object or fixture. The adjustable depth magnetic device may be affixed to or integrated into an object for the purpose of constraining said object to a ferrous target; or the adjustable depth magnetic device may be affixed to or integrated into a fixture to facilitate manufacturing, production, and/or assembly operations.

An adjustable depth magnetic device comprises a switchable magnet, switchable magnet carrier, or switchable magnet integrated into a carrier, constrained by and locked into position by a receiver that is separate from or integrated into an object or fixture. The adjustable depth magnetic device may be affixed to or integrated into an object for the purpose of constraining said object to a ferrous target; or the adjustable depth magnetic device may be affixed to or integrated into a fixture to facilitate manufacturing, production, and/or assembly operations.

A method of milling a piece of raw steel stock comprising: presenting a piece of raw steel stock having a first surface and a second surface having a perimeter; presenting a magnetic chuck with a top surface configured to support the piece of raw steel stock for milling with magnetic capabilities; arranging a minimum of four solid pole extensions on the top surface to support the second surface of the piece of raw steel stock for milling of the first surface thereof such that the solid pole extensions will be relatively evenly distributed beneath the perimeter of the second surface; arranging multiple mobile pole extensions on the top surface to further support the second surface; placing the second surface onto the multiple mobile pole extensions and the solid pole extensions; activating the magnetic capabilities of the magnetic chuck; and milling the first surface to a desired flatness.

This work clamping device including a receiving member which has a first contacting surface which comes into contact with a first circumference position of an outer circumference surface of a columnar portion of a work and a second contacting surface which comes into contact with a second circumference position of the outer circumference surface of the columnar portion, an attraction member which is provided in the receiving member and which is made of a ferromagnetic material or a magnet, a pre-clamping positioning member which is attached to the columnar portion and which temporarily hold the columnar portion to the receiving member by being attracted to the attraction member by magnetic force, and a clamp mechanism which presses the columnar portion temporarily positioned by the pre-clamping positioning member toward the receiving member.

A magnet chuck includes, for example, four permanent magnets of a first permanent magnet through a fourth permanent magnet, serving as an attracting and retaining member for attracting and retaining a workpiece. In the first permanent magnet and the third permanent magnet, the magnetic polarity of a workpiece magnetic attracting surface facing the workpiece is of an N-polarity. On the other hand, in the second permanent magnet and the fourth permanent magnet, the magnetic polarity of a workpiece magnetic attracting surface is of an S-polarity. More specifically, in this case, combinations of the N-pole and the S-pole on the workpiece magnet attracting surface are formed in two pairs, and the N-pole and the S-pole, which are of different polarities, are adjacent to one another.

A magnetic drive transmission method includes the steps of: disposing solid magnetic device and ring-shaped magnetic device at top and bottom surfaces of work platform, while keeping the solid magnetic device in axial alignment with the hollow inner diameter of the ring-shaped magnetic device the solid magnetic device enters within the magnetic field lines of the ring-shaped magnetic device so as to create a magnetic field downstream between the solid magnetic device and the ring-shaped magnetic device that changes the thrust of the same polarity repulsion and to further cause the solid magnetic device and the ring-shaped magnetic device to attract each other in a balanced manner, and then using the ring-shaped magnetic device to drive the solid magnetic device in moving a predetermined workpiece along one surface of the work platform to a predetermined location.

The present disclosure relates to magnetic coupling devices. More specifically, the present disclosure relates to magnetic coupling devices configured to be linearly actuated and de-actuated.

A drill press includes a main housing, a drill unit supported by the main housing for relative movement therewith, and a magnetic base for coupling the drill press to a ferromagnetic workpiece. The magnetic base includes a ferromagnetic body having spaced, substantially parallel first and second rails. Each of the first and second rails includes a flat bottom surface engageable with the ferromagnetic workpiece. A coil is positioned between the first and second rails for generating a holding force on the ferromagnetic workpiece. The coil defines a central axis that is parallel with the bottom surface of each of the first and second rails.

A measuring device is provided which, in order to measure measured variables of an object being measured, can be placed on a surface of the object being measured. The surface supports the measuring device. The measuring device comprises at least three projecting contact surfaces, the center points of which are distributed substantially uniformly along a circle. The projecting contact surfaces, when the measuring device is placed on the surface of an object being measured, lie against the surface and are supported by the surface. A first of the contact surfaces comprises a temperature sensor for measuring the surface temperature of the object being measured, while a second and a third of the contact surfaces are provided to measure respective other measured variables.

There is provided a substrate support device. The substrate support device includes a substrate support part on which a wafer is deposited, the substrate support part including a first mesh electrode and a second mesh electrode disposed under the first mesh electrode; a chucking circuit configured to apply a DC voltage to the first mesh electrode; and an edge control circuit configured to control timings of operations related to the first mesh electrode and the second mesh electrode and control RF (Radio Frequency). The second mesh electrode is divided into a plurality of second sub-mesh electrode to remove an induced electromotive force generated due to a closed loop.