Abstract
The author designs an up-to-date rock cutter for mining machines and presents a matrix to determine its service life depending on the strength of the rock being broken. The dependence of the cutter service life on the strength of the rock being broken is proved. Advanced designs of rock cutters by the leading companies are described. The author develops an original design of a rock cutter which provides greater cutting surface, increased strength and prolonged service life. Pilot samples of the cutters ready to the test run are presented.
Highlights
Rocks breaking in mines during the mining and clearing activities is conducted by special coal mining machines; their working bodies are equipped with cutters
Research Results Currently coal mining machines are equipped with swivel tangential cutter which is designed as a cylinder swing holders made of high strength alloy steel and hard-tipped with hard-metal nose (Fig. 2)
Based on the study of the rate and the mode of wearing of coal machine cutter we have developed a new design of the cutter which has high wear resistance and efficiency
Summary
The author designs an up-to-date rock cutter for mining machines and presents a matrix to determine its service life depending on the strength of the rock being broken. The dependence of the cutter service life on the strength of the rock being broken is proved. Advanced designs of rock cutters by the leading companies are described. The author develops an original design of a rock cutter which provides greater cutting surface, increased strength and prolonged service life. Pilot samples of the cutters ready to the test run are presented
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