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发明公开
CN107061396A 大吨位惯性摩擦焊机液压驱动系统 无效 - 驳回

大吨位惯性摩擦焊机液压驱动系统
摘要：
一种大吨位惯性摩擦焊机液压驱动系统，包括低压大流量叶片泵(4)、高压小流量柱塞泵(7)，第一个二位四通电液换向阀(13.1)，第二个二位四通电液换向阀(13.2)，三位四通电液换向阀(14)，第三个二位四通电液换向阀(16)，主轴工件油缸(18.1)，尾座工件油缸(18.2)及顶锻油缸(18.3)。本发明大幅降低装机功率、节约能耗；同时还实现了主轴工件油缸的快速动作和夹紧牢固可靠、尾座工件油缸的快速动作和夹紧牢固稳定及顶锻油缸低压快速前进、高压工作进给、高压快速顶锻和低压快速后退等动作，系统动作过程由计算机+PLC程序自动控制，具有结构原理简单、动作稳定可靠的优点。
摘要（英）：

The invention provides a large-tonnage inertia friction welding machine hydraulic drive system which comprises a low-pressure large-flow vane pump (4), a high-pressure small-flow plunger pump (7), a first two-position four-way electro-hydraulic directional valve (13.1), a second two-position four-way electro-hydraulic directional valve (13.2), a three-position four-way electro-hydraulic directional valve (14), a third two-position four-way electro-hydraulic directional valve (16), a main shaft workpiece oil cylinder (18.1), a tail base workpiece oil cylinder (18.2) and an upset forging oil cylinder (18.3). The system greatly reduces installing power and energy consumption. Meanwhile, fast motion and firm and reliable clamping of the main shaft workpiece oil cylinder, fast motion and firm and reliable clamping of the tail base workpiece oil cylinder, and low-pressure fast advancing, high-pressure work feeding, high-pressure fast upset forging and low-pressure fast retreating of the upset forging oil cylinder are achieved, the motion process of the system is automatically controlled by a computer +PLC program, and the system has the beneficial effects of being simple in structural principle and stable and reliable in motion.

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