This machine is equipped with a turret with two independent OD grinding spindles and one heavy duty ID spindle offering great flexibility and the following standard features:

--Machine bed designed for improved thermal stability
--Oversized monorail guideway system
--Digital AC servo motors and drives
--High axes speed with highest accuracy
--High precision Heidenhain linear scales with air purge system

Traveling Wheelhead 

This design substantially reduces the overall machine size while minimizing “Z” axis wear. 

Tailstock

The Usach tailstock design incorporates the same proven roller guideways design as used for the machine axes allowing moving an upper slide when activating the tailstock.  This design provides increased rigidity and accuracy over the entire tailstock when compared to a conventional barrel style tailstock design.  The tailstock is also equipped with a high precision taper adjustment. 

Tailstock

This machine is equipped with a Siemens 840D sl CNC control integrated with our Usach Open Architecture System software which consists of a PC front end with touch screen. 

Some key features of the control system are the following:

--Unlimited part program and tool data storage through the use of the latest PC technologies including large capacity hard drives

--Permanent storage of all wheels in tool library requiring the data to be entered only once so the system keeps track of partially used wheels

--Tool library provides the basis for a fast part changeover eliminating the need to re-teach in dressing the grinding positions

--Dry run feature allows safe dry cycling of part programs during changeover to verify that the changeover has been properly completed

Technical Specifications

Distance between centers 80"

Swing diameter 40"

Wheel size up to 24" x 4.5" (610mm x 114mm)

Maximum workpiece weight between centers 3500 lbs (1588kg)

Required power, approximately 67kVA, 80amps

Electrics - Connection voltage 480 +/- 5%, 3ph, 60 cycle, Control Voltage 24 VDC

Machine Axis

"Z" axis travel (maximum stroke) 78.7" (2000mm)

"X" axis travel (maximum stroke) 23.6" (600mm)

"Z" axis feed rate 0-787"/minute (0-20m/minute)

"X" axis feed rate 0-787"/minute (0-20m/minute)

"Z" axis resolution .000004" (.0001mm)

"X" axis resolution .000004" (.0001mm)