A ring cutter for removing an ornamental ring encircling a person's finger is disclosed. The ring cutter includes an oscillating hand-held multi-tool with a blade substantially oriented at a right angle that oscillates to cut the ring. The oscillating blade has an oscillating amplitude small enough to avoid any injury to the finger. The ring cutter further includes a tissue depressor and guard attached to the head portion of the ring cutter and functions to push down the swollen tissues that surround the ring that need to be cut and help in avoiding finger injury. The ring cutter further includes a sprayer assembly to deliver a jet of cooling liquid (such as water) to cool down the ring and blade and prevent any thermal burn during the cutting operation.

Apparatus, systems, and/or methods for filtering, recapture, and/or recirculation of coolant are disclosed. In some examples, coolant (e.g., coolant fluid) is used to cool and/or clean a machine, such as a material removal machine, for example. In some examples, a recirculation tank may be in fluid communication with an inlet and/or outlet of a cabinet (and/or housing) of the machine. The recirculation tank may include a recapture reservoir having a filtering surface configured to prevent particulates, debris, and/or swarf from being recirculated with the coolant. A vibration device (e.g., a vibration motor and/or vibrating actuator), may be in contact with and/or configured to vibrate (and/or shake, rattle, oscillate, etc.) the filtering surface, recapture reservoir, and/or recirculation tank so as to keep the filter free from obstruction and/or help settle and/or compact filtered particulates in a bottom of the recapture reservoir and/or recirculation tank.

A machine tool including a cooling fan measures an input power source voltage to the machine tool and an input current to the cooling fan. If the measured current value is outside a predetermined current value range corresponding to the measured voltage value, the machine determines that the rotational speed of the cooling fan has decreased.

An electric apparatus comprises a foreign matter detection panel arranged inside a casing and configured to detect contact of foreign matter. The electric apparatus comprises a detection controller which receives a signal outputted from the foreign matter detection panel and judges whether or not foreign matter is in contact with a surface of the foreign matter detection panel. The foreign matter detection panel includes a substrate, a transmitter which generates a surface acoustic wave on the substrate. The foreign matter detection panel includes a reflection array which reflects the surface acoustic wave in a predetermined direction and a receiver which receives the surface acoustic wave which has propagated along the substrate.

A clamping jaw for clamping or holding a workpiece is described. The clamping jaw includes a base body and a clamping contour, which is provided for abutment against a workpiece and can be cooled by a cooling device. The cooling device is implemented by at least one coolant duct, which is provided for receiving a coolant and which is formed in the base body by a generative production (e.g., additive manufacturing) process. The formation of the base body is free of auxiliary bores. Furthermore, a method for manufacturing a clamping jaw is described.

Apparatus, systems, and/or methods for filtering, recapture, and/or recirculation of coolant are disclosed. In some examples, coolant (e.g., coolant fluid) is used to cool and/or clean a machine, such as a material removal machine, for example. In some examples, a recirculation tank may be in fluid communication with an inlet and/or outlet of a cabinet (and/or housing) of the machine. The recirculation tank may include a recapture reservoir having a filtering surface configured to prevent particulates, debris, and/or swarf from being recirculated with the coolant. A vibration device (e.g., a vibration motor and/or vibrating actuator), may be in contact with and/or configured to vibrate (and/or shake, rattle, oscillate, etc.) the filtering surface, recapture reservoir, and/or recirculation tank so as to keep the filter free from obstruction and/or help settle and/or compact filtered particulates in a bottom of the recapture reservoir and/or recirculation tank.

In a precision machine tool wherein a spindle head 20 that is movable in the up and down direction is disposed on a column 14 disposed on a bed 10 and a water storage space for storing temperature-regulated cooling water is formed inside the column 14, the column 14 has, in a lower part thereof, intake ports 38a and 38b through which cooling water is led into the water storage space, the column 14 has, in an upper part thereof, a drain opening 40 through which a cooling water is led outside, and an air vent hole 49 through which air in the column is discharged is formed at a position higher than the drain opening 40.

A coolant supply device and supply method that can appropriately control the spraying of coolant using a single parameter. A pump (101) supplies coolant to a tool (D), and a measurement device (22) measures the discharge pressure of the pump (101). A control device (50) has a function for determining, from the rotation rate of the pump (101), the coolant flow path diameter for the tool (D) and the target value for the pump discharge pressure (target pressure) when the tool (D) is drilling.

Provided is a monitoring device and a monitoring method that can capture the condition of a coolant in detail. A monitoring device according to one embodiment includes: a first detection unit that detects a first physical quantity; a second detection unit that detects a second physical quantity; a ratio calculation unit that calculates the ratio between a first value obtained when the first physical quantity is expressed using a specified unit, and a second value obtained when the second physical quantity is expressed using a specified unit; and an inferring unit that, if the calculated ratio is above an upper limit value of a management range or below a lower limit value of the management range, infers that one among an oil and an electrolyte contained in the coolant is abnormal.

[Problem] To separate dispersed oil in a coolant and reduce the clogging of a filter.

[Means of Solution] Provided is a coolant supply apparatus including: a coolant tank configured to store (i) a first coolant C1 supplied to a machine tool and (ii) (a) machining debris and (b) dispersed oil dispersed from the first coolant that flow with the first coolant from a place supplied; a debris separation section configured to separate the machining debris from a second coolant C2 collected from a coolant stored in the coolant tank; and a hydrophilic oil-repellent filter configured to separate the dispersed oil from a third coolant C3 separation-treated in the debris separation section.