HPMA

Renishaw’s HPMA (High Precision Motorized Arm) is a high-precision motorized tool setting arm designed specifically for CNC lathes and turning centers. At its core are automatic swing-in/swing-out functionality and 3D contact measurement, enabling tool length and diameter measurement, tool breakage detection, and unmanned “lights-out” machining. It serves as the standard tool setting solution for turning automation.

Core Functionality and System Configuration 
· Core Functionality: Fully automatic tool setting and tool breakage detection for lathes, replacing manual tool setting and enabling unmanned production (Renishaw) 
· System Configuration: HPMA motorized tool setting arm + RP3 3D probe + TSI3/TSI3C machine interface + probe assembly 
· Operating Principle: 
1. The machine tool’s M-code command drives the tool setting arm to swing 90°, moving from the safe stow position to the measurement position (approx. 2–3 seconds) Renishaw 
2. The tool moves to contact the RP3 probe, triggering a signal; the machine tool records the coordinates and automatically calculates tool offsets Renishaw 
3. Once measurement is complete, the tool setting arm automatically swings back to the safe position, avoiding interference with machining 
· Protection Design: IPX6/IPX8, with probe cover, resistant to coolant and chips, suitable for harsh workshop environments 
Technical Specifications (HPMA Standard Version)

Core Features and Applications
Fully Automatic Tool Length/Diameter Measurement
1. No manual intervention; triggered with a single M-code command; automatically updates tool offsets; efficiency improved by over 90% compared to manual methods
2. Eliminates human error and ensures dimensional consistency in batch machining
3. Supports measurement of all types of turning tools, including external turning, internal boring, threading, and grooving tools
Tool Breakage Detection
1. Rapid inspection after tool change or before machining; immediate alarm and shutdown upon tool breakage or chipping, eliminating batch scrap
2. Supports in-process inspection, with real-time monitoring of tool status during machining (Renishaw)
Unmanned “lights-out” machining
1. Fully automated closed-loop control, no operator supervision required, 24-hour continuous production (Renishaw)
2. Compatible with FMS (Flexible Manufacturing Systems) to enhance overall production line efficiency
Typical Application Scenarios
1. CNC lathes, turning centers, dual-turret lathes, and multi-axis turning-milling composite machines
2. High-volume production of automotive components, bearings, hydraulic parts, and precision shafts for the aerospace industry
3. Turning applications requiring high precision, high consistency, and high automation
Core Advantages
● Fully automatic movement: 90° electric swivel, reaches position in 2–3 seconds, automatically locks, no manual operation required
● Ultra-high repeatability: 5 μm 2σ, meeting precision turning dimensional requirements
● 3D omnidirectional measurement: RP3 probe supports ±X/±Y/+Z, covering full-dimensional measurement of the cutting tool
● Strong interference resistance: IPX6/IPX8+ protective cover, stable operation in harsh workshop environments
● Easy Installation: Secured with M8 bolts; compatible with various lathe configurations; minimal space requirements
● System Compatibility: Supports mainstream CNC systems including FANUC, Siemens, Mitsubishi, and Heidenhain; mature macro programs
● Safe and Reliable: Probe features a breakaway tip; automatically breaks upon overtravel to protect the probe body