Measurable parameters include the coordinates of the circle center of the cutterteeth compact and the compact's back rake Angle and side sway Angle.
可测量的位置参数有切削齿复合片的圆心坐标及负前角、侧偏角等。
2
The test result shows the penetration rate of the bit is closely related to the transmission ratio, cutterteeth structure, rock character and drilling parameters.
Hose bit can be divided into cutterteeth and cone teeth, cone teeth for weathering of soft rock strata, and permafrost, cutterteeth used for drilling hard bedrock.