Sixth International Conference on Advances in Mechanical and Robotics Engineering - AMRE 2017
Author(s) : ALMAS ANJUM , ANEES AHMAD , AQIB PERWAIZ , SHERAZ MEHFOOZ
This paper presents a novel algorithm for placement of circular cutting bits on a 141.36 inch circular trencher blade for hard rock cutting to be able to lay fiber optic cable of varying width. The blade is divided into 6 x segments of 60 degree each. The spiral algorithm calculates the exact angle of hit, no. of bits and the angle of exposure to precisely cut the required width of hard rock patch for fiber optic cable lying. With the no. of bits and angle known the best cutting blade speed and speed of wheeled machine can be calculated to obtain prÃ©cised outcome. Given the type of material to cut the algorithm can also estimate based on the above mentioned parameters the running cost of trenching blades/ km in terms of bits replacement to forecast the exact cost of trenching. The algorithm simulation on hard rock shows as the no. of bits are reduced on the circular trencher blade the bits replacement rate / km increases, the effect is even worse if simultaneously the bit ground penetrating angle is made wider. The effects are inversely proportional if the no. of bits is increased and the bit ground penetrating angle is made narrower. But there is a limit the n. of bits can be increased and the angle can be made narrower, beyond that limit the effect is not optimized. An already existing micro trencher by Ditch witch has been studied as a case study to compare the on ground performance and simulation performance. The test was conducted at CPEC route in Gilgit Pakistan.