초록 ▼

A coolant system is disclosed for use with a machine tool in which coolant is used to both cool and lubricate a workpiece and cutting tool. The system of the present invention utilizes a positive displacement pump with one or more spray nozzles each having a restricted orifice whereby the coolant is

A coolant system is disclosed for use with a machine tool in which coolant is used to both cool and lubricate a workpiece and cutting tool. The system of the present invention utilizes a positive displacement pump with one or more spray nozzles each having a restricted orifice whereby the coolant is sprayed from the nozzles at a relatively high velocity and pressure enabling the coolant to be precisely directed to the cutting location to provide optimum cooling and lubricating of the workpiece and cutting tool. Check valves are provided for both the pump inlet and outlet lines to maintain the pump in a primed condition and prevent drainage of coolant from the coolant system when the pump is not operating. The system filter is mounted to a flexible coolant line to enable the filter to be raised from the coolant reservoir and the filter is coupled to the coolant line by a quick connect/disconnect coupler to enable the filter to be raised from the reservoir and quickly replaced with a clean filter when the first filter becomes clogged and requires cleaning.

대표청구항 ▼

A machine tool comprising: means for holding a plurality of workpieces; tool means for simultaneously performing a material removal operation on each of said plurality of workpieces; a reservoir containing a quantity of a liquid coolant for cooling said plurality of workpieces and said tool means du

A machine tool comprising: means for holding a plurality of workpieces; tool means for simultaneously performing a material removal operation on each of said plurality of workpieces; a reservoir containing a quantity of a liquid coolant for cooling said plurality of workpieces and said tool means during said material removal operation; delivery means for delivering said coolant from said reservoir to said plurality of workpieces and said tool means, said delivery means including a positive displacement pump having an inlet and an outlet and drive means for said pump to produce a coolant flow rate of at least 3.5 gallons per minute, an inlet conduit connecting said pump inlet to said reservoir to enable said pump to receive coolant through said pump inlet, check valve means disposed within said inlet conduit to prevent substantial drainage of coolant from said inlet conduit when said pump is not in operation, an outlet conduit from said pump outlet to said plurality of workpieces and said tool means, said outlet conduit terminating in at least one spray nozzle adjacent to each of said plurality of workpieces and tool means, said nozzles having restricted orifices compared to said outlet conduit immediately upstream from said nozzles to produce a back pressure in said outlet conduit of at least 300 psi with the entire coolant flow of at least 3.5 gallons per minute being discharged through said nozzles.