阅读说明：本技术 冲孔设备的液压驱动系统 (Hydraulic driving system of punching equipment ) 是由 C·L·巴图 R·巴塔利亚 于 2019-09-30 设计创作，主要内容包括：液压驱动系统(1),其与多压力机冲孔设备(50)相关联,用于沿着相应的工作轴线(A)以单独且独立的方式操作多个冲孔工具(51),该液压驱动系统包括多个液压缸(2),每个液压缸均与相应的冲孔工具(51)相关联,并设有相应的活塞(21),该活塞在液压缸(2)内限定了推力室(22)和返回室(23),并且与相应的冲孔工具(51)相关联,以使冲孔工具(51)沿工作轴线(A)移动；可逆型第一泵(3),其连接到推力室(22),并被布置为至少在其中一个所述推力室(22)中以供应压力(P-A)输送油,从而沿着工作方向推动相应的活塞(21),并允许与之相关的冲孔工具(51)与工件(100)相互作用,或者至少从所述推力室(22)中抽吸油,以使相应的活塞(21)沿返回方向移动,并将冲孔工具(51)从工件(100)上分离并移除；多个换向阀(4),每个换向阀与相应的液压缸(2)相关联,介于第一泵(3)和推力室(22)之间,可启动打开以连接第一泵(3)和推力室(22),以操作液压缸(2)；液压蓄能器(5),其连接到返回室(23),并被布置为在所述返回室(23)中将油保持在确定的预载压力下。(Hydraulic drive system (1) associated with a multi-press punching apparatus (50) for operating a plurality of punching tools (51) in a single and independent manner along respective working axes (A), comprising a plurality of hydraulic cylinders (2), each associated with a respective punching tool (51) and provided with a respective piston (21) defining a thrust chamber (22) and a return chamber (23) within the hydraulic cylinder (2) and associated with the respective punching tool (51) to cause the punching tools (5) to operate in a single and independent manner1) Moving along a working axis (a); a first pump (3) of the reversible type, connected to the thrust chambers (22) and arranged to supply a pressure (P) at least in one of said thrust chambers (22) A ) -feeding oil so as to push the respective piston (21) along the working direction and allow the punching tool (51) associated therewith to interact with the workpiece (100), or at least to suck oil from said thrust chamber (22), so as to move the respective piston (21) along the return direction and to separate and remove the punching tool (51) from the workpiece (100); a plurality of directional valves (4), each of which is associated with a respective hydraulic cylinder (2), interposed between the first pump (3) and the thrust chamber (22), and can be actuated open to connect the first pump (3) and the thrust chamber (22) to operate the hydraulic cylinder (2); a hydraulic accumulator (5) connected to the return chamber (23) and arranged to keep the oil at a determined preload pressure in said return chamber (23).)