Renishaw High Precision Pull-Down Arm and Motorized Arm
Renishaw High Precision Pull-Down Arm (HPPA) and High Precision Motorized Arm (HPMA)
The HPPA is a manual ‘pull-down’ ‘push-up’ tool setting system for use on CNC lathes. The HPMA is an ‘automatic’ servo driven system. Both products are designed to permanently reside in the machine envelope.
When needed, the HPPA is manually ‘pulled-down’ into position. After use, the arm is ‘pushed-up’ away from the cutting volume. HPMA requires the use of CNC M codes to drive the arm to its active and stowed positions.
All HPPA and HPMA systems are supplied with an enclosure to protect the probe and stylus assembly when not in use. HPPA and HPMA hubs are available in both R/E (rear exit ) and S/E (side exit) configurations. S/E hubs are supplied with a fixed 5 m cable. R/E hubs are supplied with a bulkhead connector and require the purchase of a separate cable.
Specifications
Unidirectional repeatability
max 2σ value in machine XZ axis:
- 5.0 μm (0.0002 in) for arms
- supporting 6 in to 15 in chucks
- 8.0 μm (0.0003 in) for arms
- supporting 18 in to 24 in chucks
HPPA max arm dimensions: A=555 mm B=458 mm
HPPA min arm dimensions: A=250 mm B=219 mm
HPMA max arm dimensions: A=555 mm B=458 mm
HPMA min arm dimensions: A=250 mm B=219 mm
HPPA and HPMA are available to fit most common chuck sizes from 6 in to 24 in. Each ‘standard’ kit (see below) is supplied complete with:
- Arm
- HPPA or HPMA hub
- RP3 probe (A-2197-0049)
- 90° probe holder
- TSi2 interface for HPPA (A-2176-0010)
- TSi3 interface for HPMA (A-2181-0465)
- Probe enclosure (A-2275-0098)
- Cable (supplied with S/E systems only, purchase separately for R/E systems)