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中南大学学报(自然科学版)

Journal of Central South University

第16卷    第3期    总第45期    1985年9月

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硬质合金柱钻(钎)头热嵌法固柱的参数分析和计算
朱成忠1

(1.采矿系)

摘 要: 本文在热嵌法固柱工艺试验的基础上,根据厚壁圆筒理论和波动理论,对硬质合金柱钻(钎)头的柱孔和柱之间配合面上的压力、应力等进行了理论分析,导出了最小计算过盈量的公式为:(2δ)min=0.27×10-4Pd/h·f(mm),给出了选择配合种类的方法和加热温度的计算方法,并列举了计算实例,其结果与板孔试验数据[7]和国外报道数据[8]很接近,为热嵌法固柱质量提供了理论依据。

 

关键字: 参数分析; 配合过盈量; 厚壁圆筒理论; 金柱; 压力强度; 计算实例; 加热温度; 钻头体; 硬质合金; 波动理论

ANALYSES AND CALCULATIONS OF THERMO--INSERTING PARAMETERS OF THE CARBIDE INSERT ON A BUTTON BIT
朱成忠1

1.采矿系

Abstract:In the present paper, pressures and stresses applied to the contraction fit annulus surface between carbide insert and its holding hole of a button bit, etc. have been analyzed theoretically, based on the test results using thermo-inserting technique and the principle of both thick wall cylinder and wave mechanics. A formula for calculating the minimum fit tolerance, (2δ)min=0. 27×10-4 Pd/hf (mm), has been derived, and the methods for selecting the correct fit and for calculating the suitable temperature needed are also given respectively. In addition, a calculating example is presented. The value calculated is fairly approaching the data of foreign countries and a pin- ching-out experiment is carried out by the author himself. Therefore the theo- retical base for improving the quality of thermo-inserting technique of the button drill bit is thus provided.

 

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中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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