Method and device for testing a cutting-edge geometry of a rotatably drivable tool
AssigneeBlum-Novotest GmbH
InventorsHeribert Bucher, Bruno Riedter
Life of this patent
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Abstract
The testing of a cutting-edge geometry of a tool takes place during time intervals that comprise time instants at which it is to be expected that a region, to be tested, of the tool enters a measuring beam. At time instants at which the tool does not enter the measuring beam, no measurements are performed, which increases the reliability of the test and avoids spurious measurements. For this purpose, a measuring system is used that preferably comprises programmable units in order to use the invention flexibly for various machine tools and tools without changing the construction of the measuring system.
Claims28
A method of testing a cutting-edge geometry of A rotatably drivable tool with a measuring system (10-18), comprising the following steps:
- definition of a region, to be tested, on the tool (20),
- rotation of the tool (20) at a chosen constant rotational speed,
- emission of a measuring beam (14) that defines the measuring range (30),
- positioning of the tool (20) so that an envelope surface, produced by the rotation, of its region (32) to be tested enters the measuring range (30), and
- detection of signals that indicate interactions of the measuring beam (14) with obstacles in its propagation path,
- characterized in that
- standard time instants are determined at which a region, corresponding to the region (32) to be tested, of a reference tool having a standard pitch enters the measuring range (30) during the rotation,
- the measuring system (10-18) is synchronized with the rotation of the tool (20) on the basis of the sequence of detected signals, and
- the detection is subsequently performed only during chosen detection time intervals that each comprise a standard time instant.
A measuring system for testing a cutting-edge geometry of a tool (20) that is adapted to be rotatably driven at a chosen rotational speed, comprising
- a transmitter (10) for emitting a measuring beam (14),
- a receiver (12) for receiving the measuring beam (14) and for outputting signals that indicate a received measuring beam (14),
- an evaluation unit (18) connected to the receiver (12) for receiving signals outputted by the receiver (12) and for generating signals that indicate interactions of the measuring beam (14) with obstacles in its propagation path as a function of the received signals, and
- a control unit (16) for controlling the measuring system, characterized in that
- the evaluation unit (18) evaluates the signals of the receiver (12) only during chosen evaluation time intervals, which each comprise a standard time instant at which a region, corresponding to a region (32) to be tested, of a reference tool having a standard pitch enters the measuring beam (14) during the rotation.
A measuring system for testing a cutting-edge geometry of a tool (20) that is adapted to be rotatably driven at a chosen rotational speed, comprising
- a transmitter (10) for emitting a measuring beam (14),
- a receiver (12) for receiving the measuring beam (14) and for outputting signals that indicate a received measuring beam (14),
- an evaluation unit (18) connected to the receiver (12) for receiving signals outputted by the receiver (12) and for generating signals that indicate interactions of the measuring beam (14) with obstacles in its propagation path as a function of the received signals and
- a control unit (16) for controlling the measuring system,
- characterized in that
- the receiver receives the measuring beam (14) only during chosen receiving time intervals that each comprise a standard time instant at which a region, corresponding to the region (32) to be tested, of a reference tool having a standard pitch enters the measuring beam (14) during the rotation.
A measuring system for testing a cutting-edge geometry of a tool (20) that is adapted to be rotatably driven at a chosen rotational speed, comprising
- a transmitter (10) for emitting a measuring beam (14),
- a receiver (12) for receiving the measuring beam (14) and for outputting signals that indicate a received measuring beam (14),
- an evaluation unit (18) connected to the receiver (12) for receiving the signals outputted by the receiver (12) and for generating signals that indicate interactions of the measuring beam (14) with obstacles in its propagation path as a function of the received signals and
- a control unit (16) for controlling the measuring system, characterized in that
- the transmitter (10) emits the optical measuring beam (14) only during chosen transmission time intervals that each comprise a standard time instant at which a region, corresponding to the region (32) to be tested, of a reference tool having a standard pitch enters the measuring beam (14) during the rotation.
Dependencies are inferred from the claim text.