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哈威HAWE誤差消除對(duì)液控單向閥
2014-4-23 閱讀(274)
液控單向閥是液壓系統(tǒng)在機(jī)床*的組成部分,。如果他們工作可靠故障液壓消費(fèi)者的風(fēng)險(xiǎn)降低。用四種止回閥慕尼黑的HAWE HYDRAULIK SE現(xiàn)在提供根據(jù)安全標(biāo)準(zhǔn)DIN EN ISO13849-2:2003的誤差消除的證書有兩個(gè)錯(cuò)誤的假設(shè),。
Pilot-operated check valves are indispensable components for hydraulic systems in machine tools. If they work reliable the risk of malfunctioning hydraulic consumers is reduced. With four types of check valves the Munich-based HAWE Hydraulik SE now offers an error elimination certificate for two error assumptions pursuant to the safety standard DIN EN ISO 13849-2:2003.
當(dāng)評(píng)估對(duì)液壓功能,，靜止機(jī)床制造商現(xiàn)在可以假設(shè)誤差消除的類型RH，DRH,，RHC和RHCE的液控單向閥,。本方適用于錯(cuò)誤的假設(shè)根據(jù)ISO13849的附件C4：無輸入信號(hào)的起始位置，“不打烊”和“不*關(guān)閉”獨(dú)立變化,。在實(shí)踐中,，這意味著，例如,，該閥控制用于加工中心的液壓工件夾持可顯著簡(jiǎn)化了,，因?yàn)楦郊拥谋O(jiān)視功能被省略。
When assessing the risk to hydraulic functions, manufacturers of stationary machine tools can now assume error elimination for pilot-operated check valves of the types RH, DRH, RHC and RHCE. This applies to the error assumptions according to Annex C4 of ISO 13849: independent changing of the starting position without input signal, "Not Closing" and "Not Fully Closing". In practice this means for example that the valve control for hydraulic workpiece clamping in machining centers can be significantly simplified because additional monitoring functions are omitted.
按照DIN EN ISO13849標(biāo)準(zhǔn)的一臺(tái)機(jī)器的安全水平,，必須進(jìn)行評(píng)估,。從HAWE HYDRAULIK證書，使計(jì)算的風(fēng)險(xiǎn)評(píng)估更容易,，從而有助于降低開發(fā)費(fèi)用,，因?yàn)椴槐亟ㄔ斓慕Y(jié)構(gòu)消除了上市的故障。
According to the DIN EN ISO 13849 standard the safety level of a machine must be assessed. The certificate from HAWE Hydraulik makes calculation the risk assessment easier and thereby helps reduce development expenses, as the structures for eliminating the listed faults need not be built.
要消除錯(cuò)誤的假設(shè),，HAWE HYDRAULIK根據(jù)FMEA方法進(jìn)行測(cè)試,，并提出可能的故障及其對(duì)機(jī)器的安全性影響廣泛的分析。此外,，該公司通過分析收到超過過去五年的回報(bào)故障原因進(jìn)行了服務(wù)報(bào)告的統(tǒng)計(jì)評(píng)估,。
To eliminate error assumptions, HAWE Hydraulik tested according to the FMEA method and made extensive analyses of possible faults and their impact on the machines' safety. In addition, the company conducted a statistical assessment of service reports by precisely analyzing the failure causes of the returns received over the last five years.
