Siemens GC..M.. Manual de usuario descargar pdf (Pagina 10)

GORATU MAQUINAS HERRAMIENTA,S.A.

GCM 4 / 5 / 6 / 8 / 10 8 JANUARY - 2011

11. MEASURING SYSTEM

§ The measuring system uses direct reading linear encoder with an incremental system

with a resolution of 0,001mm.

§ These encoders are provided with a codification system with several reference sources,

which allows a rapid start of the jobs without the need for long displacements of the

axes for reference searches.

12. THERMAL COMPENSATION

§ Thermal expansion compensation on the X / Y / Z -axis, governed by the CNC with two

temperature probes, one on the headstock and the other one on the rear part of the

machine to check environmental temperature.

13. PROTECTION OF SLIDES AND SLIDEWAYS

§ The rear part of the bed-table is protected with bellows manufactured with NOMEX

cloths, which can resist high temperatures. This bellows protect the guide ways, linear

scales, and the rack of X-axis.

§ The front part of cross slide is protected by a metal shutter with a thickness of 5.5mm.

These shutters protect guide ways and ball screw…of the Z-axis.

§ The ball screw of the Y-axis traverse is protected by a metallic telescopic guard.

14. TOOL CLAMPING SYSTEM

§ The tool releasing system operates by means of a hydraulic piston integrated in the

head itself, and driven by a hydraulic unit, which releases and clamps the tool by means

of track tension spring washers.

§ Tool clamping/releasing can be performed by means of an electric pedal so as to be

able to handle the tool more comfortably.

§ These operations can either be performed manually or automatically provided that the

machine is equipped with a tool magazine.

15. COUNTERWEIGHT FOR COMPENSATION OF VERTICAL Z AXIS

§ The Z-axis (vertical slide and ram) is balanced by means of a counterweight

system, made up of a hydraulic cylinder and its rod attached to the vertical

slide, and connected to a nitrogen accumulator, which together form a closed

circuit, so that there is no need for an additional hydraulic unit during

operation.

§ If for any reason, a discharge of the circuit takes place and the pressure drops below the

established limits for a correct operation of the system, a device manually charges the

system again. The instructions to charge manually are detailed in machine maintenance

manual.

§ Nevertheless, the machine is equipped with a safety system, which blocks the operation

of the entire system in case of an emergency.

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Siemens GC..M.. Manual de usuario Pagina 10