Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1979-08-28
1981-03-03
Swisher, S. Clement
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
G01L 2500
Patent
active
042533252
ABSTRACT:
A transducer calibrating assembly for calibrating the spindle transducers in a multiple spindle machine tool without the need for completely dismantling the machine to perform the calibration operation. The transducer calibrating assembly includes a torque coupling assembly 18 and a support coupling 20 which are connected by an articulated lever assembly 22 including a threaded shaft 26 a slide clamp 28 and a clamp shaft 24. Torque coupling assembly 18 includes a torque coupling 48 attached at a first socket to a master transducer housing 18, into which is inserted a spindle drive 5 of a spindle 3 on which is mounted the transducer to be calibrated. Support coupling 20 is attached directly to an adjacent spindle drive 5'. Leads 12 and 34 connect the transducer to be calibrated and the master transducer to measuring circuits 10 and 32, respectively. Measuring circuit 10 also includes variable resistors 148 and 150 to allow adjustments to be made in the measuring circuit of the transducer being calibrated. Before the calibration operation, air motor 7 is fixed, preferably by pinning and a known torque, which is measured by the master transducer and indicated on the readout display 36 of sensing circuit 32, is applied to spindle 3 by turning threaded shaft 26, which moves clamp shaft 24 about the rotational axis of spindle 3. This torque is maintained while the transducer is calibrated, after which the assembly is easily removed and is ready for attachment to another set of spindles.
REFERENCES:
patent: 3354705 (1967-11-01), Dyer, Jr.
patent: 3750082 (1973-07-01), Peterson
patent: 3797305 (1974-03-01), Haskell
patent: 3827293 (1974-08-01), Hohberg
patent: 3999426 (1976-12-01), Sonderegger
patent: 4090393 (1978-05-01), Kharitonor et al.
Reed Robert H.
Yagger David F.
Cummins Engine Company, Inc.
Swisher S. Clement
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