A cutting fluid circulation device includes a first tank reservoir, a primary filter, and a first pump. The tank reservoir stores cutting fluid discharged from a machine tool. The primary filter is provided in the first tank reservoir and filters the cutting fluid. The first pump pumps up the cutting fluid filtered by the primary filter in the first tank reservoir. The first tank reservoir is partitioned into a filtration tank in which the primary filter is disposed, a pumping-up tank in which the first pump is disposed, and a connecting channel in which the cutting fluid in the filtration tank is allowed to flow into the pumping-up tank. The connecting channel has an identical channel width along an entire length thereof, or at least a portion of the channel width is narrowed stepwise or continuously from the filtration tank to the pumping-up tank.

A processing discharge liquid filtration device enhances filtration capacity for filtering a discharge liquid discharged from a processing device. The processing discharge liquid filtration device includes a dirty tank that stores a discharge liquid containing cutting chips, a dirty tank pump that pumps the discharge liquid stored in the dirty tank to a screen filter for primary filtration processing that recovers the cutting chips mixed into the discharge liquid, and a cutting chip recovery container that contains the cutting chips recovered by the screen filter. The processing discharge liquid filtration device eliminates the time and effort to replace the filtration member or filter and keeps the quality of the filtered discharge liquid constant.

A method of removing metal particles from a contaminated metalworking fluid comprising emulsion droplets and metal particles includes pressurizing a first clean metalworking fluid with gas to provide an aerated metalworking fluid; releasing the pressure of the aerated metalworking fluid to form a plurality of bubbles; applying a shear force to the contaminated metalworking fluid to separate the emulsion droplets from the metal particles; flowing the contaminated metalworking fluid with the aerated metalworking fluid in a laminar flow to form a combined fluid, wherein the flowing occurs during the formation of the plurality of bubbles and while the emulsion droplets are separated from the metal particles, and wherein the laminar flow lasts for a time sufficient for the plurality of bubbles to attach to the metal particles; releasing the combined fluid into a flotation tank; and removing the metal particles to form a second clean metalworking fluid.

A separator apparatus is provided for a cutting machine which separates chips from coolant, wherein the separator includes a fluid chamber into which an airborne mixture of chips and coolant driven by an airflow enters via an entry port, the separator apparatus being configured to: sufficiently slow the speed of the airborne mixture once inside the chamber so that the chips and coolant separate out from the airflow; retain the chips and coolant released from the airborne mixture in the fluid chamber; and allow air from the airborne mixture to exit the fluid chamber via an air outlet; wherein the fluid chamber includes a chip collector which captures the chips and enables the chips to be separated and removed from the coolant in the chamber; and wherein the fluid chamber includes a coolant outlet through which coolant, from which the chips have been removed, is able to exit.

The present invention is a filter mechanism provided in a pump or the like, and the purpose thereof is to provide a filter mechanism that can eliminate foreign matter adhering to the surface of a filter and thereby can prevent clogging of filters because of foreign matter. According to the present invention, an area toward the inside in the direction of the radius of the filter is linked to an intake opening (235) of the pump (for example, a trochoid pump (22)) and, via the pump (22) to a pump ejection opening (trochoid pump ejection opening (215)), and an area between a filter (5) and (an inside wall surface (3i) of) a first casing (3) is linked to a low-pressure ejection opening (discharge opening (237)) for a working fluid.

The present invention is a filter mechanism provided in a pump or the like, and the purpose thereof is to provide a filter mechanism that can eliminate foreign matter adhering to the surface of a filter and thereby can prevent clogging of filters because of foreign matter. According to the present invention, an area toward the inside in the direction of the radius of the filter is linked to an intake opening (235) of the pump (for example, a trochoid pump (22)) and, via the pump (22) to a pump ejection opening (trochoid pump ejection opening (215)), and an area between a filter (5) and (an inside wall surface (3i) of) a first casing (3) is linked to a low-pressure ejection opening (discharge opening (237)) for a working fluid.

A screw conveyor that appropriately discharges chips inside cutting fluid includes: a main body in the form of a container provided with a storage tank; a screw rotatably assembled inside the storage tank; a discharge pipe formed at a rear side of the main body and connected to the storage tank; an inlet section configured to receive the chips and the cutting fluid into the storage tank at a front side; a guide plate configured to guide the chips and the cutting fluid to the screw; a screw cover provided with multiple fine holes configured to cover a space above the screw; and an opening formed in the storage tank at a position higher than the screw cover such that the cutting fluid enters inside the main body.

A machine is provided, including at least one cutting tool in the form of cutting head with coolant supplied for machining parts from flat material, wherein the machine also includes a coolant containment and recovery system which includes: a waste removal apparatus, a coolant guard having at least one wall bounding a containment forming area, wherein the coolant guard is fluidly connected to the waste removal apparatus, wherein in use: the coolant guard is located upon a plate to be machined; and the containment forming area becomes a containment area, within which the cutting tool and coolant are both located during the machining process, so that used coolant can be removed.

A manufacturing process includes collecting metal chips produced by a subtractive manufacturing processes and sorting the metal chips. The process further includes heating the metal chips to form a melt, removing impurities from the melt, deoxidizing the melt and atomizing the melt to form metal powder. The powder is then used to form a metal part by additive manufacturing or powder metallurgy processes.

A machine tool includes a spindle to which a tool is attached, and a table configured to support a workpiece, and machines the workpiece by the tool by moving the spindle and the table relative to each other. The machine tool includes a box-shaped cover member placed on the table and configured to be open on the spindle side, and a lid member attached to a column configured to support the spindle, the lid member being configured to cover the spindle side of the cover member, the lid member including an insertion hole formed therein through which the tool can be inserted. Following the relative movement between the spindle and the table, the lid member and the cover member move relative to each other as viewed in a plane intersecting with the axial direction of the spindle.