Control method and borehole flushing module
A control method for a borehole flushing module ( 2 ) for a chiseling tool ( 5 ), includes the steps: Providing fine-grain particles in a dispenser ( 31 ); ascertaining a material (M) at a location processed by the tool ( 5 ) with the aid of a material detector ( 37 ); and introducing fine-grain particles at the location of the substrate processed by the tool ( 5 ) when the material detector ( 37 ) ascertains an iron-containing material (M 2 ).
1. A control method for a borehole flushing module for a chiseling tool, the control method comprising the steps of:
providing fine-grain particles in a dispenser;
ascertaining a material at a location processed by the tool with the aid of a material detector; and
introducing the fine-grain particles at the location processed by the tool when the material detector ascertains an iron-containing material.
2. The control method as recited in claim 1 wherein an aspiration of an air flow from the location processed by the tool with the aid of a fan of the borehole flushing module when the material detector ascertains a primarily mineral material.
3. The control method as recited in claim 1 wherein, when the material detector ascertains an iron-containing material, the fine-grain particles are introduced into the processed location by being mixed into an air flow generated by a blower of the borehole flushing module.
4. The control method as recited in claim 1 wherein the fine-grain particles are separated out of the air flow and supplied to the dispenser.
5. The control method as recited in claim 4 wherein the iron-containing particles are removed from the air flow.
6. The control method as recited in claim 1 wherein a metering valve of the dispenser is closed when the material detector ascertains a mineral material, and the metering valve is opened when the material detector ascertains an iron-containing material.
7. The control method as recited in claim 1 wherein the material detector detects vibrations of the borehole flushing module or vibrations of a handheld power tool into which the chiseling tool is inserted, with the aid of a vibration sensor, and an evaluation unit ascertains the material based on the vibrations.
8. The control method as recited in claim 7 wherein a vibration above a threshold value is assigned to an iron-containing material, and a vibration below the threshold value is assigned to a primarily mineral material.
9. A borehole flushing module for a chiseling tool, the borehole flushing module comprising:
a blower for generating a blowing-out air flow;
a controllable dispenser for outputting fine-grain particles into the air flow generated by the blower;
a material detector for ascertaining the material processed by the tool;
a controller closing the dispenser in response to the material ascertained by the material detector when the material detector ascertains a mineral material and causing the dispenser to output the fine-grain particles when the material detector ascertains an iron-containing material.
10. The borehole flushing module as recited in claim 9 wherein the material detector includes a vibration sensor for detecting vibrations and an evaluation unit for assigning vibrations above a threshold value to an iron-containing material and assigning vibrations below the threshold value to a mineral material.
11. The borehole flushing module as recited in claim 9 further comprising a dust collection container and a dust filter and a fan for generating an aspirating air flow.
12. The borehole flushing module as recited in claim 9 further comprising a dust collection container and a dust filter, wherein the blower the blower is switchable between the blowing-out air flow and an aspirating air flow.
13. A handheld power tool comprising the borehole flushing module as recited in claim 9 and an electric motor and a striking mechanism driven by the electric motor.