valve spool

基本解釋

Pneumatic valve works by rotating the valve spool to flow or occlusion.
氣動球閥的工作原理是靠旋轉(zhuǎn)閥芯來使閥門暢通或閉塞。
By changing the balance valve spool of the flow area to adapt to the changes before and after the valve, so as to achieve the purpose of flow control.
通過改變平衡閥的閥芯的過流面積來適應(yīng)閥門前后的變化，從而達(dá)到控制流量的目的。
blog.sina.com.cn
The mate-grinding for axial mate dimension of valve spool and valve sleeve is the key process during machining, and the axial mate dimension is called as overlap values.
閥芯和閥套的軸向配合尺寸的加工是伺服閥制造過程中的關(guān)鍵工序，這種軸向配合尺寸通常稱之為疊合量。