Carcasas de válvulas hidráulicas
Machining requirements
- Fluctuating cast allowance situation
- Heavily interrupted cuts
- Avoid ring formation during boring and ensure safe chip removal from the housing
- Avoid macroscopic flaws on the control edges in the boring process
- Very high demands on form and position tolerance
- Constant stock removal before honing
- Take part variance and limited tool storage places in the machining concept into account
Control valves are mechanically or electronically actuated valves with several switch positions. Depending on the specified position of the spool along the control edges, a volume flow is set for operating the connected working equipment. The individual pressure compensator adjusts a constant load pressure drop via the supply control edge of the spool, so that a load pressure-independent volume flow control is achieved across the whole adjusting range, also in parallel operation (load compensation). The system must be leakage-free, to prevent accidental dropping of the load, even with parallel operation.
Bore machining
Application solutions
Situación inicial del cliente
Valve housing EN-GJS-400-15 – spool bore
- Individual orders, smaller and medium quantities
- No option for tool setting
- Short cycle times required
- High machine hourly rates
- Stable oscillating honing available
- Tool concept adapted to several part versions
Initial situation at the customer
Valve housing EN-GJS-400-15 – spool bore and compensator bore
- Large-scale series
- Tool setting desired
- High machine hourly rates
- High costs for subsequent single pass honing
Situazione di partenza del cliente
Corpo valvola EN-GJL-300 – Foro cursore
- Piccole dimensioni
- Possibilità di registrazione utensile
- Troppi/frequenti cambi utensile
- Elevati costi orari della macchina
- Dispendio elevato dovuto al processo di levigatura del foro
Situación inicial del cliente
Carcasa de la válvula EN-GJS-400-15 – Perforación/bruñido de equilibrio de presión
- Exigencia de reducir los costos auxiliares
- Centro de mecanizado existente convertido en TOOLTRONIC
- Bruñido para la construcción de prototipos, así como para series pequeñas y medianas
- Necesidad de guardar el proceso de bruñido en una máquina separada
Ausgangssituation beim Kunden
Ventilgehäuse EN-GJS-400-15 – Komplettbearbeitung
- Hohe Lagerbestände
- Prozessabläufe im Einstellraum nicht optimal und unvollständige Datenqualität
- Kostentransparenz nicht ausreichend
- Hohe Fluktuation aufgrund von allgemeinem Fachkräftemangel
- Probleme mit Werkzeugbrüchen
- Hohe Werkzeugkosten
