Hydraulic valve housing
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
Situação inicial no cliente
Corpo da válvula EN-GJS-400-15 – Furo do carretel
- Pedidos individuais, pequenas e médias quantidades de peças
- Nenhuma possibilidade de ajuste da ferramenta
- Baixo tempo de espera necessário
- Altas taxas de hora da máquina
- Disponibilidade de um processo de brunimento expansão estável
- Conceito de ferramenta adaptado a várias variantes de componentes
Situación inicial del cliente
Carcasa de la válvula EN-GJS-400-15 – Perforación de corredera y de equilibrio de presión
- Producción a gran escala
- Ajuste de la herramienta deseada
- Altas tarifas por hora de las máquinas
- Costos elevados para el bruñido posterior de las espinas
Situación inicial del cliente
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
Initial situation at the customer
Valve housing EN-GJS-400-15 – complete machining
- High inventories
- Processes in the tool-setting area not optimal, and incomplete data quality
- Cost transparency is not sufficient
- High fluctuation due to general lack of skilled workers
- Problems with tool breakage
- High tool costs
