一种钻机主轴

Main shaft of drilling machine

  • Inventors: ZHANG XIAOYUN
  • Assignees: 张小云
  • Publication Date: August 14, 2013
  • Publication Number: CN-203124756-U

Abstract

A main shaft of a drilling machine is arranged on a main body of the drilling machine and connected with a transmission gear which is arranged on the main body of the drilling machine; the lower end of the main shaft is flexibly connected with a drill bit; the center of the main shaft is provided with a through hole in a boring mode; and the through hole is through the upper end portion and the lower end portion of the main shaft. Compared with the prior art, the through hole is creatively bored in the center of the main shaft of the drilling machine to enable a water pipe to directly penetrate through the through hole to reach the drill bit to cool the drill bit, so that the uniformity of cooling for the drill bit can be guaranteed, the stability of the cooling effect can be guaranteed, and the service life of the drill bit can be extended by several times and even tens of times. In addition, firstly the through hole is bored in the center of the main shaft and then heat treatment is performed on the main shaft in manufacturing, so that the production process is simple, the quality of the main shaft cannot be affected due to the fact that a pipe is bored in the center of the main shaft, and the inner quality of the main shaft is greatly improved after the heat treatment.
一种钻机主轴,该主轴设于钻机主体上并连接于钻机主体上的传动齿轮,该主轴的下端可活动地连接有一钻头,该主轴的中心镗设有一条通孔,该通孔贯通主轴的上端部和下端部。和现有技术相比,本实用新型创造性地在钻机主轴的中心镗一条通孔,水管可直接穿过该通孔到达钻头以对钻头降温,不但可保证对钻头降温的均匀性,也可保证降温效果的稳定性,可使得钻头的使用寿命延长数倍乃至十数倍;另外,本实用新型的钻机主轴在制造时首先在主轴的中心镗一条通孔,再将主轴进行热处理,生产工艺简单,保证不会因在主轴中心镗管而影响主轴的质量,而且热处理后大大改善了主轴的内在质量。

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