Obudowy zaworów hydraulicznych
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
应用解决方案
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
Initial situation at the customer
Carcasa de la válvula EN-GJL-300 – Perforación
- Lotes pequeños
- Posibilidad de ajuste de la herramienta disponible
- Demasiados/frecuentes cambios de herramientas
- Altas tarifas por hora de las máquinas
- Alto esfuerzo debido al bruñido de espinas
Initial situation at the customer
Valve housing EN-GJS-400-15 – Compensator bore / honing
- Request for reduction of ancillary costs
- Existing machining centre re-tooled to TOOLTRONIC
- Honing for prototype manufacture, as well as small and medium-scale production runs
- Requirement for saving the honing process on separate machine
Situación inicial del cliente
Carcasa de la válvula EN-GJS-400-15 – Mecanizado completo
- Niveles de existencias elevados
- Los flujos de procesos en la sala de configuración no son óptimos y la calidad de los datos es incompleta
- Transparencia insuficiente de los costos
- Alta fluctuación debido a la escasez general de trabajadores cualificados
- Problemas de ruptura de herramientas
- Costos elevados de las herramientas
