Transactions of Materials and Heat Treatment

Title：Experimental studies on dynamic accuracy for bottom dead center of high-speed press

Authors： Lu Xinjian Wang Xiaodong Li Yi Tian Lizhong Ji Ya

Unit： Jiangsu Xuzhou Metal-Forming Machine Group Co. Ltd.

KeyWords： high-speed press bottom dead center dynamic accuracy

ClassificationCode：TG315

year,vol(issue):pagenumber：2015,40(6):87-90

Abstract：

The accuracy of bottom dead center （B.D.C） for the straight side two point high-speed press was tested. The test data show that under the different equilibrium pressure values, the position of B.D.C changes about 0.10 mm suddenly with the increase of the press speed, and the speed occurred mutation is different with the different static equilibrium pressure values. Therefore, the static balancing device is not suitable for this type of press. The change magnitude of B.D.C within 2 h is of compression trend significantly with increase of the amount of lubricating oil. Furthermore, the position of B.D.C raises then drops quickly about 75 minutes and raises slowly again until the end of the test（about 300 minutes） when the machine is tested from the beginning of the cold (ambient temperature is consistent with the machine). Therefore, the influence of test ambient temperature on the B.D.C accuracy is great.

Funds：

江苏省自然科学基金-青年基金资助项目（BK20131062）

鹿新建（1978-），男，博士，高级工程师

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