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
Initial situation at the customer
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
お客様の初期の加工状況
バルブケース FCD-400-15 - 流量制御穴 / ホーニング
- 付帯費用の削減要求
- 既存のマシニングセンタをTOOLTRONICに変換
- プロトタイプから中小規模生産までのホーニング
- 別個マシンでのホーニング工程を削減する必要性
お客様の初期の加工状況
バルブケース FCD-400-15 - 完全加工
- 高い在庫水準
- 導入エリアのプロセスフローが最適ではなく、データ品質が不完全
- 十分でないコストの透明性
- 全般的な技能労働者不足による生産の変動
- ツール破損に関する問題
- 高いツールコスト
