POLYHEDRAL PRISM LOCATING DEVICE Russian patent published in 2020 - IPC G01B11/26 G02B7/18 

FIELD: instrumentation; measuring equipment.

SUBSTANCE: device can be used in metrology and instrument making. Proposed device comprises case, thrust washer, pressure washer and screw. Housing has connection surface for installation on goniometric instruments and support plane for polyhedral prism (PP). Supporting washer is made with possibility of simultaneous contact with device support plane and base surface PP. Housing has threaded surface in center of support plane, and screw is conjugated with threaded surface of housing and installed with possibility of applying force to pressure washer, made with possibility to transmit force to PP. Support plane of body is made with nominal angle of deviation from perpendicularity to axis of device not less than half of tolerance limit of deviation from perpendicularity of measuring faces to basic surface PP, support washer has the same value of nominal convergence angle of planes. Ball bearing is installed between clamping washer and screw head.

EFFECT: increased rigidity of attachment and stability of angles of fixation of PP relative to shaft of goniometer settings of rotary table.

1 cl, 4 dwg