Pfauter PA-320 NC Fully CNC controlled Pfauter PA320NC Gear Hobber

Description

IN STOCK, BUILDABLE TO MEET SPECIFICATIONS

This machine was built at American Pfauter in the mid 1980's equipped originally with an Allen Bradley 8200CNC, Bosch servo drives and motors Heidenhain feed back systems and a Pfauter Geartronic for the Hob/Table/Helical/Tangential synchronization. In 2000, MTB retrofitted all the Bosch servos with new Indramat Ecodrives and an Indramat REFU drive for the spindle. The original Allen Bradley 8200 was retained but reprogrammed to accommodate the new servos. In this process some feedback systems were replaced by the new Indramat systems use of internal motor encoders. This machine has a motorized backlash free hob head powered by a liquid cooled AC Induction motor controlled by an Indramat REFU vector drive. It is also equipped with dual index drive worms for anti-backlash of the worktable and it features programmable power clamping and tailstock functions. It is equipped with 5 axes of servo motion and one spindle; "X" Radial, "Y" Tangential, "Z" Axial, "A" hob head swivel, "C" Worktable. The hob rotation is technically the "B" axis, but it is also the spindle. This model is also equipped with a hydraulic retraction system in the event of a plant power failure while hobbing a workpiece. This feature withdraws the cutter with stored hydraulic energy at the instant of the power failure. Thus saving the cutting tool from damage and quite possibly your gear from damage as well. The machine does function as is, but we recommend a complete recertification by MTB at a minimum as well as a full re-control with a Fanuc OiM-F CNC and all new Fanuc drives and motors, plus all new feedback systems. A full rebuild of the mechanical portions is also available as an option.

This machine is controlled utilizing an Allen Bradley 8200 series CNC Control System with Bosch drives and Bosch servo motors. The machine can be recontrolled with new and updated CNC Controls System like a Fanuc, Siemens or NUM. This recontrol can occur at MTB before or after the sale, or later at a customer facility if so desured.

Features
Hydraulic Tailstock
Automatic lubrication system
Dual worm anti-backlash table drive
Motorized hob head for heavy cutting
Integral hydraulic unit for machine and hob carriage
Sliding way covers for the axial axis
Fullly enclosed guarding around machine
Hydraulic Retraction Function in case of Power Failure