分割型スリーブを用いた高耐久サーボ弁の開発

―耐久試験と特性評価―

抄録

As a countermeasure against leakage in the servo valve, it is possible to reduce the amount of clearance between the spool and the sleeve. However, wear tends to occur between the spool and sleeve when the servo valve is driven. As a result, the durability of the servo valve decreases. Therefore, we considered that abrasion can be suppressed by using ceramics for the spool and sleeve. We evaluated the performance by performing the durability test of the servo valve using ceramics material up to 4 million times..As a result, wear of the spool and sleeve was reduced by the ceramics material.