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M8612A 花键轴磨床头架分度液压系统几经改进,提高了自动分度的准确性和可靠性。然而由于精简了在分度调整位置时,分度活塞左右互通平衡的功能。使分度位置调整不便,也对寿命带来不利影响。从该机床的液压分度系统原理图1看,当工作台位于左边极(终)端位置分度时,压力油3经7推动6F 阀阀芯右移。主压力油1进入4、24实现自动分度循环,这时分度齿条活塞左边油经5通回油,压力油推分度齿条活塞 h
M8612A spline shaft grinder headstock indexing hydraulic system has been improved to improve the accuracy and reliability of automatic indexing. However, due to streamlined adjustment of the position in the indexing, indexing piston left and right interoperability function. Make indexing position adjustment inconvenience, but also bring adverse effects on life. From the machine’s hydraulic indexing system schematic diagram 1, when the table is located on the left pole (end) end position indexing, the pressure oil 3 by 7 to promote the 6F valve spool to the right. The main pressure oil into the 4,24 automatic indexing cycle, then the left gear of the indexing rack piston oil through the 5 back to the oil pressure indexing rack piston h