论文部分内容阅读
爬行是金属切削机床直线运动部件在运动中经常产生的一种不正常的现象。有时以高频、小振幅的振动形式出现,有时以低频跳跃的形式出现,而有时则以两者复合的形式出现。人们平常提到的机床爬行,指的是跳跃距离太大,足以影响切削加工正常进行的状况。液压机床工作台产生爬行的原因,一般说来,可分为下列四个方面: 1.动力源的能量脉冲; 2.能量传导介质刚性不足; 3.载荷波动; 4.低速稳定性差。一、动力源的能量脉冲这里包括压力脉冲与流量脉冲两个方面。在负荷一定的条件下,随着动力源的压力波动
Crawling is a kind of abnormal phenomenon that the linear moving parts of the metal cutting machine often produce during the movement. Occasionally, it appears as high-frequency and small-amplitude vibrations, sometimes as low-frequency jumps, and sometimes as a combination of the two. People usually mentioned the machine crawling, referring to the jumping distance is too large, enough to affect the normal machining conditions. Hydraulic machine table crawling causes, in general, can be divided into the following four aspects: 1. Power source pulse of energy; 2. Energy conduction medium rigidity is not enough; 3. Load fluctuations; 4. Low speed stability is poor. First, the power source of energy pulse This includes both pressure pulse and pulse flow. Under certain load conditions, as the power source pressure fluctuates