Abstract:
A gauge for spherical objects which includes a cylindrical tubular body having an interior passageway to receive an object for random movement, the passageway being of precisely developed configuration, which is maintained because the material forming the body has a very low coefficient of expansion since it is a mixture of catalyzed polyester resin and silicon carbide grit or comprised of equivalent materials having like characteristics.
Abstract:
A ball mounting fixture for a roundness gage is disclosed. The fixture includes a pair of chuck assemblies oriented substantially transversely with respect to one another and mounted on a common base. Each chuck assembly preferably includes a rotary stage and a wobble plate affixed thereto. A ball chuck affixed to each wobble plate is operable to selectively support a ball to be measured for roundness, with the wobble plate permitting the ball chuck to be tilted to center the ball on the axis of rotation of the rotary stage. In a preferred embodiment, each chuck assembly includes a vacuum chuck operable to selectively support the ball to be measured for roundness. The mounting fixture enables a series of roundness measurements to be taken with a conventional rotating gagehead roundness instrument, which measurements can be utilized to determine the sphericity of the ball.
Abstract:
A rotary mounting for supporting a workpiece for rotation has a number of support members which are small in relation to the workpiece and each of which forms an aerostatic bearing with a flat surface of a table. The support members are connected by respective links to a radial bearing connected to the table and supporting the mounting for rotation.
Abstract:
Method and apparatus for gauging inner and outer surfaces of a member, the member mounted on a table with the surface to be gauged oriented perpendicular to the table surface. Three feelers are disposed above the table. The feelers are adjustable radially in their position depending on the geometry of the member. One of the said feelers is spring biased for radial movement and bears against the said surface. This movable feeler is connected to a comparator indicating its position.The table is inclined so that, by gravity, the member rests with the surface to be gauged on the said three feelers. The table also is movable in a direction perpendicular to its plan, so as to permit movement of the member parallel to the surface to be gauged. Variations of the said surface are indicated by variations of the indications furnished by the comparator during this movement. A sustentation device which is adjustable in relation to the weight of the member acts on the table so that the table and the member therein can be maintained in any axial position.
Abstract:
An improved measuring and gauging instrument is provided for determining concentricity, out of roundness, flatness, diameters, thickness, and the like dimensions, of a workpiece for checking or comparing the accuracy of the workpiece. The instrument includes a stand or frame having a bar upon which is mounted one or more V-blocks, or mounting blocks, with each V-block having a fixedly mounted indicator dial and each mounting block having a floatingly mounted gauge. The fixedly indicator dial is used to check a workpiece for concentricity, out of roundness and diameters. The floating gauge has an anvil for engaging an undersurface of a workpiece with the contact point of the gauge engaging the workpiece at the opposite side thereof whereupon the thickness and out of roundness of the workpiece is checked. The floating gauge may be used on bench-center gauges, indicator stands and the like.
Abstract:
Axial and radial play of ball joints in front end wheel assemblies of vehicles, are measured by a testing device from which a pair of wheel engaging elements project. A handle connected to one of the wheel engaging elements is actuated to bring that element into engagement with the wheel while retracting the other wheel engaging element in order to select the measurement to be made. Movement of either wheel engaging element is registered by an indicator on an adjustably positioned dial.
Abstract:
Apparatus for measuring the outer diameter and ovality of outof-round articles has a first defined axis of movement and first displaceable means mounted for movement along that axis, a second defined axis of movement different from the first axis and second displaceable means mounted for movement along the second axis. A counterjaw is mounted on the first displaceable means for movement therewith and cooperates with a separate pivotally mounted jaw. The pivotally mounted jaw and the separate counterjaw are arranged for measuring the ovality of an out-ofround article to be measured. A jaw is mounted on a second displaceable means for movement therewith and cooperates with a fixed jaw for measuring the outer diameter of the article to be measured. A member is mounted on the first displaceable means which defines a surface inclined at 45* with respect to the second axis. Means having a sensing tip is mounted on the first displaceable means and arranged perpendicularly with respect to and in contact with the inclined surface for measuring the ovality of the article to be measured.