Single Contact With A Work Engaging Support Patents (Class 33/832)
  • Patent number: 4831742
    Abstract: A contour and outline transducer gage assembly for selectively making outline (gap) and contour checks of parts positioned proximate thereto is provided with a slidably movable carrier arm within the gage housing in selective spring biased operative engagement with a linear potentiometer fixedly provided within the gage housing. Selective movement of the carrier arm in relation to the linear potentiometer causes a gaging electrical signal to be generated for read-out on associated data collector means. A movable cover plate is provided externally of the gage housing in fixed actuating engagement with the movable carrier arm. An adjustable contour check pin support assembly is provided on the movable cover plate so as to provide selective horizontal, vertical and angularity adjustment of a part-engaging contour check pin mounted on the contour check pin support assembly.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: May 23, 1989
    Inventor: James E. Struble
  • Patent number: 4829677
    Abstract: A device for supporting a stylus in a touch sensor comprises a casing, a stylus having its one end part protruding out of the casing for detecting an object, and a spring for pressing an inner base part of the stylus housed concentrically in the casing outwards from behind wherein a ball is provided at each of three abaxial positions on one of the mutually opposite faces of the stylus inner base part and an end part of the casing while an engaged part with which the ball is allowed to come into contact is configured at each of three corresponding positions on the other of said opposite faces, the three engaged parts are configured respectively into different shapes so the stylus can be kept steady in the casing.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: May 16, 1989
    Assignee: Daishowa Seiki Co., Ltd.
    Inventor: Tanaka Yuzuru
  • Patent number: 4821420
    Abstract: System for measuring the limit of peripheral strength, consisting of method and apparatus for raising the heel of a patient in discreet steps while testing for peripheral strength.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: April 18, 1989
    Inventor: William A. Maykel
  • Patent number: 4817362
    Abstract: The invention enables two-way communication to be established between a measuring probe on a machine spindle and the machine using only two wires between the probe and the machine. Communication from the probe to the machine is achieved by causing current changes in an electrical circuit within the probe (due to the probe circuit changing state when a workpiece is detected) to be sensed by a current sensing circuit on the machine to produce an output in the machine circuit indicative of workpiece detection. Communication from the machine to the probe is achieved by varying the voltage supplied to the probe circuit under the control of the machine controller, the change in voltage being sensed by components of the probe circuit to initiate different functions of the probe circuit e.g. re-setting the probe or changing the gain of a component.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: April 4, 1989
    Assignee: Renishaw plc
    Inventor: Clifford W. Archer
  • Patent number: 4815214
    Abstract: In the work-contacting probe head (or on the suspension of the deflectable work-contacting probe head) of a coordinate measuring machine, an electromagnet is provided to trigger a mechanical impact blow or vibration if the switch-contact circuit in the three-point mounting of the probe pin remains open for a predetermined short period of time after completion of a cycle of coordinate measurement of a given work-contacted measurement location. The delivery of the impact is sufficient to overcome any residual mechanical friction that may have interfered with return of the probe to its calibrated at-rest position, at completion of the measurement cycle.
    Type: Grant
    Filed: July 10, 1987
    Date of Patent: March 28, 1989
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Eckhard Enderle, Karl Schepperle
  • Patent number: 4813152
    Abstract: A lever-actuated dial gauge supported above a workpiece by a base block. The lever includes a pedal portion which, when parallel to the workpiece, has a working clearance beneath it. When setting the height of machine tools above a workpiece, an operator may exceed the set point clearance without making a hard contact and thereby preventing damage to the machine tool.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: March 21, 1989
    Inventor: Stephen C. Spencer
  • Patent number: 4813151
    Abstract: A contact-sensing probe for measuring workpieces includes a body (16) for attachment to a machine and a workpiece contacting stylus (22) carried by a stylus holder (24) which is mounted within the body for movement relative thereto from a rest position to a displaced position when the stylus contacts the workpiece. Sensing means are provided for sensing workpiece contact by the stylus. The sensing means comprise a plurality of strain gauges (46) mounted on pillars (44) connecting two parts (36A,36B) of a support structure which supports the stylus holder on the body. The strain gauges are mounted with their principal axes lying at an angle to the axes of the pillars, and by optimizing the numbers, positions and dimensions of the pillars together with the angles of the strain gauges, high sensitivity can be achieved with minimum risk of false signals due to probe vibration, while at the same time minimizing the variation in pre-travel of the stylus.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: March 21, 1989
    Assignee: Renishaw PLC
    Inventors: Peter Hajdukiewicz, Clifford W. Archer