摘要:
A lap plate for a lapping machine, the working surface of which is provided with a pattern of troughs through which an abrasive liquid centrifugally flows during a lapping operation, wherein the depth of the troughs can be varied in ratio to the wear of the surface of the lap plate.
摘要:
An improvement in a machine for parallelly lapping opposite surfaces of a workpiece by a rotatable lapping plate on which the work is positioned within a base or workholding ring beneath a pressure plate keyed to the ring for rotation therewith about a fixed vertical axis common to both the ring and the pressure plate and with the pressure plate self-adjustable vertically relative to such axis by engagement of the pressure plate with the work being lapped.
摘要:
Means for applying a liquid abrasive over the surface of a rotatable lapping table of a lapping machine comprising delivering the abrasive to a well or cup in the center of the table, allowing the abrasive to fill the well to a point of overflowing therefrom and then spreading the abrasive over the surface of the lapping table by capillary action created by rotation of a wear or work ring on the table with the peripheral portion overlapping the edge of the well in the path of overflowing abrasive from the well.
摘要:
A device for testing the flatness of the surface of a flat lapping plate of a lapping machine, the device including a probing device manipulated over the surface of the lapping plate and having a probing finger riding on and in engagement with a wire cable stretched taut over and above the surface of the lapping plate and supported upon the lapping plate at opposite corresponding portions thereof. The probing device has an indicator receptive to the flat condition of the surface of the lapping plate to indicate the minutest variation in the flatness of such plate.
摘要:
A lapping machine having one or more hollow pressure plates through which a coolant, such as water, is continuously circulated, during the lapping of work, to maintain a constant temperature of the lapping surfaces of the machine to avoid heating of the work or the means, such as wax or the like, which may be employed for holding the work in position beneath the pressure plate.
摘要:
A LAPPING MACHINE HAVING A HORIZONTALLY ROTATABLE RELATIVELY FLAT LAPPING PLATE IN FACIAL CONTACT WITH A RELATIVELY FLAT SPIRALLY WOUND TUBULAR COIL ARRANGED THEREBENEATH AND THROUGH WHICH A COOLANT CIRCULATES TO MAINTAIN THROUGHOUT A LAPPING OPERATION A UNIFORM TEMPERATURE OF THE LAPPING PLATE AND A PRESSURE PLATE THEREIN AND OF THE WORK DISPOSED UPON THE LAPPING PLATE BENEATH THE PRESSURE PLATE.