Means for simultaneously connecting a plurality of switch-type probe heads to the measurement arm of a coordinate-measuring machine
AssigneeCarl-Zeiss-Stiftung, Heidenheim/Brenz
InventorKarl-Eugen Aubele
Life of this patent
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Abstract
Plural switch-type probe heads used in a coordinate-measuring machine are electrically connected in parallel, and each probe head contains a resistor (106) which is series-connected to its switch contact (103/110). In addition, each probe head has a measurement resistor (108) which is independent of switch contacts, and the measurement resistors of all probe heads are also connected in parallel. The operative work-contacting switch signal is produced from a comparison of the currents flowing through the measurement resistors (108) and the series resistors (106).
Claims10
An arrangement for simultaneously connecting a plurality of switch-type probe heads (22;
- 102) to the measurement arm of a coordinate-measuring machine, characterized by the fact that each probe head (22;
- 102) contains within its housing a resistor (26;
- 106) in series relation with the switch contact (23;
- 103-110), and the outputs (A) of all probe heads are connected in parallel.
A connector device for connecting a plurality of switch-type probe heads to the measurement arm of a coordinate-measuring machine comprising:
- a plurality of identical probe heads, each probe head containing a switch contact means and at least one resistor, both said switch contact means and said resistor being connected in a series circuit,
- a holder for mounting the plurality of probe heads to the measuring arm of the coordinate measuring machine, said holder having electric conductor means connecting said series circuits of all probe heads in parallel,
- an electronic arrangement connected to said conductor means and providing a signal indicative of the number of probe heads connected to said holder,
- and trigger means within said electronic arrangement and having a trigger threshold dependent on said signal.
Dependencies are inferred from the claim text.