| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lubricating oil circulating device of a press machine which can improve accuracy of a bottom dead point property in such a constitution that a connecting rod coupled to a crankshaft and a slide are connected by a coupling mechanism part guided with a crown part. SOLUTION: According to this device, lubricating oil supplied to a bottom oil chamber 12 formed at the bottom of a coupling mechanism 6 flows into a top oil chamber 13 through an oil passage 14 of the coupling mechanism 6, so as to cool a rod part of a connecting rod in the top oil chamber 13. Then, after the lubricating oil flows into the inside of a crown part 3 from an opening 23 formed on the peripheral part of the connecting rod 5 upwards from the upper part of the top oil chamber 13, it is recovered in an oil tank 16 by a discharging pump 21 from a lubricating oil discharging port 15 on the bottom face of the crown part 3. The oil is pumped by a circulating pump 17, and circulated by a heat exchanger 18 at proper temperature and pressure. Since this device can start up at room temperature, thermal balance of the connecting rod 5 is quickly obtained and also accuracy of a bottom dead center is good.
|
