SMA-TRE

Description

The SMA-TRE CNC Grinding Lathe is a high-precision machine designed for machining vitrified wheels of any shape and size. It allows both roughing and finishing operations using a rotary tool or a
diamond insert, mounted on a standard tool holder (20×20 mm shank). Thanks to its SMA conversational software, it is extremely easy to use, even for operators without CNC programming experience. Its low operating cost and minimal maintenance make it the ideal machine for continuous production in small and medium-sized workshops.

Main Features
CNC Control
SMA conversational software with X and Z axis interpolation
Built-in libraries for FEPA and OSA wheel profiles, with or without shank
User-friendly interface with pre-set automatic cycles to reduce setup times
Structure
Rigid welded frame, precision-machined for stability and accuracy
Compact and stable design, optimized to minimize vibration and ensure high precision
Working System
Rough turning and fine grinding operations
Spindle with ER25 collet holder

Axes
X Axis
Travel: 150 mm
2000 W servo motor, C5 ball screw, 5 mm pitch
23-bit absolute encoder
Absolute accuracy: ±0.02–0.03 mm
Repeatability: 0.0002–0.003 mm
Z Axis
Travel: 300 mm
2000 W servo motor, C5 ball screw, 5 mm pitch
23-bit absolute encoder
Absolute accuracy: ±0.02–0.03 mm
Repeatability: 0.0002–0.003 mm

Workpiece Spindle
Speed: 0–3000 rpm, adjustable via vector inverter
Power: 4 kW
Ø500 mm three-jaw chuck
Maximum work diameter: 250 mm
Telescopic guard with Ø100 mm suction port
Wheel Spindle
Power: 3 kW (vector inverter)
ER32 collet holder
Speed up to 4000 rpm

Cooling System
Independent circuit with Venturi 630 chiller
Cooling power: 2500 BTU
Temperature range: 0–25 °C, ambient up to 55 °C
Grinding Software
SMA HMI interface for:
Profile setup
Automatic compensation
Custom grinding cycles

Integrated diagnostics and pre-configured tool library

Operating cost Extremely low, due to reduced power consumption and standard components

Key Advantages
Easy to use – Conversational software and guided programming
Low maintenance – Compact structure and high-quality components
Low energy consumption – Only 7.5 kW, single-phase supply
SMA reliability – Fully tested and ready-to-use machine

With the revolver table, production can reach 4,000–6,000 pieces per shift, depending on the wheel shape. Each motorized head is equipped with ER25 quick-change collets (3–12 mm and inch
sizes). 8-position revolver table with 8 motorized heads (0–3000 rpm)