摘要:
A probe device (10) comprising a probe card (13), a main chuck (12), an X-stage (14), a Y-stage (15), an elevating mechanism (18) aligned with the extension passing the center of inspection of the probe card (13), a hydrostatic thrust air bearing (19) provided as an elevator, aligned with the elevating mechanism (18) and adapted for elevating the main chuck (12), and gap maintaining means (23) for maintaining the gap between the hydrostatic thrust air bearing (19) and the main chuck (12) to be constant.
摘要:
Appareil de mesure d'une grandeur électrique, comportant un corps fixe (1) et un équipage mobile (6) dont l'axe pivotant (7) est solidaire d'une aiguille indicatrice (8) se déplaçant devant un cadran gradué (9), appareil caractérisé en ce que l'équipage mobile est monté pivotant sur le corps fixe, d'une part, par des pointes de pivotage (13, 14) et des portées d'appui correspondantes (15, 16) prévues, les unes aux extrémités de l'axe (7), les autres en regard sur le corps fixe (2), d'autre part par des couteaux (17, 18) et des portées d'appui correspondantes fixées les uns sur le corps, les autres à proximité des extrémités de l'axe (7), le tranchant (17₁, 18₁) des couteaux et les pointes de pivotage ainsi que les portées correspondantes, étant alignés.
摘要:
Fluid thrust bearing containing moving magnet indicating instrument (10) includes a bobbin (12) and transparent lens (14) through which pointer (16) and dial (18) can be viewed. Pointer (16) is mounted to end of shaft (20) having axis of revolution (28) and attached to rotor (30) in bore (34). The rotor (30) is disposed in close-fitting walled cavity (26) so as to define a small substantially air excluded damping fluid filled gap (32) therebetween. Shown near detail arrows (1A) are excess fluid containing reservoir (33) formed by raised torroidal ridges (36, 38). Indicator (10) contains two pairs of field coils (22.1, 22.2, 24.1, 24.2). Adhesion and cohesion help maintain the rotor (30) in cavity (26). The substantial air exclusion helps prevent rotor (30) from moving axially out of cavity (26). A method of assembling to create such conditions therein is also set forth.
摘要:
A moving coil measuring instrument wherein at least one end of the axis (3) of rotation of the moving coil (1) is supported so as to permit adjustment of that end of the axis (3) in a direction substantially perpendicular to the axis (3), such adjustment correcting for non-ideal operation of the instrument. The adjustment is effected by rotation of a support member (5, 7), defining the one end, rotatably mounted in a frame member (9) of the instrument, the support member (5, 7) defining the one end at a location displaced from the axis (31, 32) of rotation of the support member (5, 7).
摘要:
Die Zeigerwelle (1) eines Drehmagnet-Quotientenmeßwerkes ist nahe ihres Zeigers (2) und am ihrem Drehmagneten (4) gegenüberliegenden Ende jeweils mittels eines Radiallagers (15, 20) gelagert. Das untere, nahe des Drehmagneten (4) vorgesehene Radiallager (20) ist durch ein Sackloch (26) gebildet, in welches die Zeigerwelle (1) eingreift und in welchem sie auf einer Metallkugel (19) aufsteht. Diese Metallkugel (19) bildet deshalb ein Axiallager (20).
摘要:
A moving coil measuring instrument wherein at least one end of the axis (3) of rotation of the moving coil (1) is supported so as to permit adjustment of that end of the axis (3) in a direction substantially perpendicular to the axis (3), such adjustment correcting for non-ideal operation of the instrument. The adjustment is effected by rotation of a support member (5, 7), defining the one end, rotatably mounted in a frame member (9) of the instrument, the support member (5, 7) defining the one end at a location displaced from the axis (31, 32) of rotation of the support member (5, 7).
摘要:
An electric gauge (20) driving a pointer (26) has an extended spindle (22) so that the gauge movement can be substantially spaced from the pointer (26). The gauge (20) includes a spindle (22), an armature (48) driving the spindle (22), a bobbin (38) supporting a bearing (58) for the spindle (22) and electrical coils (46) around the bobbin (38). An outrigger support (18) remote from the bobbin (38) and adjacent the pointer (26) holds another spindle bearing (24) which may be mis-aligned with the bobbin (38). The bearing (58) on the bobbin (38) accommodates for the mis-aligned spindle (22).