Tos C250 Centerless grinding machine

Tos C250 HIGH PRODUCTIVITY

Centerless Grinding Machines

The C 250 and C 500 CNC models of grinding machines belong to the product line C of fully numerically controlled centerless grinders. Their construction and high rigidity make them suitable for accurate and high-performance grinding of external cylindrical surfaces in series and mass production, allowing for both plunge-cut shape and through-feed grinding. With machine modular modifications, the number of controlled axes can be selected as needed for the particular type of workpieces to be ground, to the satisfaction of customer's requirements.

User software, which comes with the machine as a standard, is designed to meet the needs of a machine's operator and technologist as much as possible. The software has a variety of support functions available such as archiving of grinding processes, graphical diagnostics of the grinder, or logical help, which, together with quick fault diagnostics and direct selection of spare parts and subcontractor's contacts from a control system screen facilitates the grinder operating and makes it easier.

The grinder's connection to a customer's internal data network is of advantage, making possible the processing of grinding operation data and results, including statistical analyses of the machine operation accuracy. Complete backup of grinding operation setups and parameters considerably quickens the machine resetting to another type of workpiece.

For their operational flexibility, excellent performance, high accuracy, and small space they require to be incorporated, the C 250 CNC and C 500 CNC centerless grinding machines become an indispensable part of production lines in bearings, automotive engines and components, aircraft and aircraft components, textile, and printing machines manufacturing.

Thanks to the machine modular design, we can offer a wide variety of configurations in other versions.

EXECUTION OF STANDARD GRINDER

CNC dresser of grinding wheel with cross support without tracer template

Control system SIEMENS Sinumerik 840D s1

Complete regulating wheel head with double-front operating panel with TFT graphic color flat-sided spindle mounting in antifriction bearings

Stepless speed variation of regulating wheel

Rear operating panel with control elements for dresser of regulating wheel with cross support

Operator for through-feed grinding only

C 250 CNC with tracer template

PLC Simatic S7 300

Work rest support with manual vertical long-distance diagnostic application over modem adjustment and manual stabilization

Digital AC servomotors of feeds with digital drive

Sliding side doors and internal fluorescent lighting

Machine bed inc. accessories

Automatic central lubrication with independent grinding wheel head with double-sided spindle mounting in antifriction bearings

Machine adaptation for connection to central or local coolant supply

Grinding wheel head in-feed axis X1 by means of ball screw

Machine adaptation for connection of central or local mist exhaustion from the working space

Semiautomatic balancing system of grinding wheel

CONFIGURATION OF C 250

Roller type wheel dresser

Grinding wheel

Work rest

Regulating wheel

C 250 CNC controlled axes - basic execution

Axis X1 in-feed of regulating wheel head with rest support

Axis U1 Cross-feed of the grinding wheel dresser in position coupling

Axis W1 Longitudinal feed of the grinding wheel dresser in position coupling

Axis W2 Longitudinal feed of the regulating wheel dresser in position coupling

Axis C2 Stepless controlled speed of the regulating wheel speed coupling

Specification

Min. grinding diameter of workpiece mm 13

Max. grinding diameter of workpiece for through-feed grinding mm 100-220

Max. grinding diameter of the workpiece for plunge-cut grinding mm 100-200

Max. length of the workpiece without special feeding for through grinding mm 300-500

Max. length of the workpiece with special