 Natural Granite Base Natural Granite Base Natural granite base is lapped flat at Precitech and then sealed for life. Granite provides excellent long term stability of the base of the machine so straightnesses and squarenesses will not be distorted over time. |
 Pneumatic Vibration Isolation System Pneumatic Vibration Isolation System Dual-chamber self-leveling, passively damped vibration isolators are used in each corner of the machine. These provide excellent vibration isolation from floor vibrations. |
 Travel Oil Hydrostatic Machine Slide 250 mm Travel Oil Hydrostatic Machine Slide 1270 mm Travel Oil Hydrostatic Machine Slide The machine slides are non-contact due to the use of oil hydrostatic bearings, non-contact linear motors and non contact encoder feedback. In this manner there is zero stick-slip or friction, allowing motions of nanometer amplitude to be performed. |
 Oil Bearing OHS-200 Work Spindle and Oil Bearing Tailstock Oil Bearing OHS-200 Work Spindle and Oil Bearing Tailstock The OHS-200 is Precitech’s DRL work holding spindle, with axial and radial error motions under 0.2 microns. The speed control is variable, closed loop, and bidirectional up to 500 RPM. The spindle and tail stock are constructed using a hardened steel shaft and hardened steel housing. These materials provide a durable spindle that provides many years of operation without maintenance or servicing. A DC brushless motor is mounted integral with the shaft, as is the velocity feedback encoder and C- axis position encoder. Temperature control is maintained by cooling the oil supply to the bearing. Rapid braking of the work rotation in a power failure or E stop condition is accomplished by shorting of the motor power leads through a resistor. The spindle includes a high resolution encoder, and encoder outputs for use as a C-axis or by a FTS. This enables threading, marking, or milling to be performed on the work piece. |
 UPx Machine Controller UPx Machine Controller This machine controller was developed by Precitech specifically for ultra precision lathe and machine tool applications. QNX 64 bit operating system with advanced application customization and MTF diagnostic to achieve cutting results. |
 Remote Jog Pendant Remote Jog Pendant This jog pendant allows the operator to perform some setup functions while away from or not facing the machine controller. For safety purposes, when the remote is active, the main operator controller is not functional. A light is provided on the main controller indicating that the remote pendant is active. Functions provided include E stop, continuous and incremental axis jog, jog increment size, and shift selection. |
 Spray Mist System Spray Mist System A minimum quantity of lubricant is used to both cool and lubricate the diamond cutting process. The lubricant of choice is Odorless Mineral Spirits (OMS). This is stored in a reservoir on the machine where the operator can easily see if the level is getting low. The lubricant is supplied from the reservoir by gravity. When the spray mist is turned on by the machine controller (M code) then a pneumatic indicator turns green indicating that the spray mist is active. The operator has toggle valve controls for air and lubricant that must be turned on in order for the spray mist to function. Air pressure coming out of the nozzle pulls lubricant through a vacuum venturi effect and sprays the lubricant on the part. The operator has needle valve controls to adjust the air and lubricant (separately) flowing to the nozzle. When the spray mist is turned off, a valve in the lubricant line prevents lubricant from dripping out of the nozzle, and prevents lubricant from flowing back into the lines, which delays the start of spray mist when it is then turned on again. |
