Cold cutting drilling device
The invention discloses a cold cutting drilling device which comprises a drilling cylinder, a drilling shaft and a manual operating component. The drilling shaft penetrates through the inner hole of the drilling cylinder. Furthermore the upper end of the drilling shaft extends out of the inner hole...
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| creator | MENG NING XU CHENGHONG ZHONG YI LIANG XIUDONG LI YE WEI SHENGYOU WEI XUHUI PENG XIAOWU SU LINFA ZHONG SHAOWEI LI YAO TANG LONG DONG YIFANG OU LUZHOU NING JINHONG |
| description | The invention discloses a cold cutting drilling device which comprises a drilling cylinder, a drilling shaft and a manual operating component. The drilling shaft penetrates through the inner hole of the drilling cylinder. Furthermore the upper end of the drilling shaft extends out of the inner hole and is fixedly connected with the manual operating component, and the lower end extends out of the inner hole and is fixedly connected with a drill bit. A thrust bearing and a radial bearing are arranged between the drilling shaft and the inner hole. Through arranging the thrust bearing and the axial bearing in a matching manner, high rotating precision and high axial precision of the drilling shaft can be ensured, thereby preventing a problem of low drilling quality caused by eccentricity of the drill bit; and on the other end, higher labor saving effect can be realized in a rotating process of the drilling cylinder and the drilling shaft. Furthermore, a problem of relatively short servicelife caused by severe wea |
| format | Patent |
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The drilling shaft penetrates through the inner hole of the drilling cylinder. Furthermore the upper end of the drilling shaft extends out of the inner hole and is fixedly connected with the manual operating component, and the lower end extends out of the inner hole and is fixedly connected with a drill bit. A thrust bearing and a radial bearing are arranged between the drilling shaft and the inner hole. Through arranging the thrust bearing and the axial bearing in a matching manner, high rotating precision and high axial precision of the drilling shaft can be ensured, thereby preventing a problem of low drilling quality caused by eccentricity of the drill bit; and on the other end, higher labor saving effect can be realized in a rotating process of the drilling cylinder and the drilling shaft. 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| subjects | BORING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING TURNING |
| title | Cold cutting drilling device |
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