A rotary table lockdown apparatus made a part of a computer controlled dicing saw holds a table work surface parallel to a reference surface independent of axial misalignment and without rotational movement. The apparatus includes a deflectable disk rotor radially extended from the table within a plane parallel to the reference surface. A piston styled plunger is biased against a top surface of the rotor forcing it into frictional contact with the reference surface for holding the table and thus the work surface in a rigid position for operation on a workpiece removably attached to the work surface. A chamber is pressurized to displace the plunger in a piston-like manner against a top surface of the rotor. A flexible O-ring holds the plunger in sealable contact with chamber walls and with increased pressure in the chamber flexes to permit the displacement of the plunger. Upon release of the pressure, the flexible O-ring pulls the plunger out of contact with the rotor permitting the table to be rotated. To provide further rigidity, a ball bearing assembly operating within a table rotation shaft and bore permits free rotation of the shaft within the bore under chamber ambient pressure conditions. During chamber increased pressure, displacement of the rotor also results in longitudinal displacement of the shaft forcing the ball bearings to bias against opposing shaft and bore race edges preventing axial misalignment of the shaft and thus table work surface.
A work station for assembling equipment comprises a rotatable work surface, a fixed work surface and a support frame. The rotatable work surface is rotatably mounted to the fixed work surface which is, in turn, mounted to the support frame. The work station includes a locking mechanism positioned between the rotatable work surface and the fixed work surface for adjusting the rotational orientation of the rotatable work surface. The rotatable work surface and the fixed work surface are both made of an electrostatic discharge (ESD) safe material.
A method of assembling electronic equipment using a work station which comprises a rotatable work surface, a fixed work surface and a support frame. The rotatable work surface is rotatably mounted to the fixed work surface which is, in turn, mounted to the support frame. The work station includes a locking mechanism positioned between the rotatable work surface and the fixed work surface for adjusting the rotational orientation of the rotatable work surface. The rotatable work surface and the fixed work surface are both made of an electrostatic discharge (ESD) safe material.
A hutch for a desk. The hutch has a top defining a rear edge and at least one side extending forwardly from the rear edge. At least one rotatable support extends downwardly from the top beneath the at least one side that extends forwardly from the rear edge.
The arrangement of test points on an integrated circuit (IC) undergoing testing in a probe station often requires rotation of the IC or the probes when performing a series of tests. A chuck with indexed rotation promotes rapid rotation of the device under test to a new test position and increases the productivity of the probe station. The device under test is mounted on a device mounting member that is affixed to a shaft rotationally mounted in a base. A resilient seal supports the device mounting member and forms a sealed chamber over a substantial part of the area of the device mounting member. Applying vacuum or pressure to the sealed chamber urges the device mounting member and base toward contact. The support provided by the resilient seal over substantial portion of device mounting member's diameter promotes stability and consistent planarity of the device mounting member without regard to the orientation of the shaft to device mounting member.
