Automatic control of assemblies of a water supply system

Patent metadata

Field	Value
Publication number	US-9969104-B2
Application number	US-201515321955-A
Country	US
Kind code	B2
Filing date	Jun 24, 2015
Priority date	Jun 25, 2014
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A method for controlling a water supply system for use with a machine tool is disclosed. The water supply system includes a housing with an interface for supplying electrical energy, a water tank, a line, a pump device, a current-measuring device, a water-pressure-measuring device, and a control device. The method includes activating the pump device if the machine tool is connected to the interface and the motor current of the machine tool exceeds a predetermined threshold value, and deactivating the pump device if the machine tool is connected and the motor current undershoots a predetermined threshold value; or activating the pump device if the machine tool is not connected and the water pressure in the line undershoots a predetermined threshold value and deactivating the pump device if the machine tool is not connected and the water pressure exceeds a predetermined threshold value.

First claim

The invention claimed is:

1. A method for controlling a water supply system for use with a machine tool, the water supply system comprising:
a housing with an interface for supplying the machine tool with electrical energy;
a water tank for storing water in a positionable manner in the housing;
a line for transporting the water from the water tank to the machine tool;
a pump device for conveying the water from the water tank to the machine tool via the line;
a current measuring device, wherein a motor current of the machine tool is measurable by the current measuring device;
a water-pressure measuring device, wherein a water pressure in the line is measurable by the water-pressure measuring device; and
a control device coupled to the pump device, the current measuring device, and the water-pressure measuring device;
and comprising the steps of:
activating the pump device if the machine tool is connected to the interface and the motor current of the machine tool exceeds a first predetermined threshold value; and
deactivating the pump device if the machine tool is connected to the interface and the motor current of the machine tool undershoots a second predetermined threshold value.

2. The method according to claim 1 , wherein the machine tool is a core drilling machine.

3. A method for controlling a water supply system for use with a machine tool, the water supply system comprising:
a housing with an interface for supplying the machine tool with electrical energy;
a water tank for storing water in a positionable manner in the housing;
a line for transporting the water from the water tank to the machine tool;
a pump device for conveying the water from the water tank to the machine tool via the line;
a current measuring device, wherein a motor current of the machine tool is measurable by the current measuring device;
a water-pressure measuring device, wherein a water pressure in the line is measurable by the water-pressure measuring device; and
a control device coupled to the pump device, the current measuring device, and the water-pressure measuring device;
and comprising the steps of:
activating the pump device if the machine tool is not connected to the interface and the water pressure in the line undershoots a first predetermined threshold value; and
deactivating the pump device if the machine tool is not connected to the interface and the water pressure in the line exceeds a second predetermined threshold value.

4. The method according to claim 3 , wherein the machine tool is a core drilling machine.

Assignees

• Hilti Ag

Inventors

• Sever Eduard
• Rupprecht Hans
• Specht Helmut

Classifications

• B28D1/041

  with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles · CPC title

• G05B2219/49043

  Control of lubrication · CPC title

• B28D7/02 Primary

  for removing or laying dust, e.g. by spraying liquids; for cooling work · CPC title

• G05B19/406

  characterised by monitoring or safety (G05B19/19 takes precedence) · CPC title

• G05D7/0676

  by action on flow sources (G05D7/0688, G05D7/0694 take precedence) · CPC title