Research On The Coaxial Control Method Of Deep Holes In Shearer Cutting

The shell of the rocker arm is a carrier of the transmission parts of the shearer cutting part. The manufacturing quality of the rocker arm is greatly influenced by the load distribution,the load carrying capacity and the service life of the cutting part. Therefore, it is very important to study the reliability of the shell of shearer cutting unit and to take measures to ensure the accuracy of the coaxial degree of the key parts of the shell. In mechanical transmission, the coaxial degree is a very important form and position tolerance.If the deviation exceeds the allowable range,it will produce high temperature, noise,vibration,wear and other hidden dangers in the later use , which can accelerate the equipment damage.This topic research the shell coal winning machine cutting part of the technical requirements and processing process, from the machining error, the geometric accuracy of the process system , mechanical deformation and therma deformation , alignment,measurement, etc, this article analyzes the reasons that the hole is the alignment error. By upgrading precision processing equipment, optimize the design of the alignment accuracy and improve the processing technology in the process of machining allowance, cutting dosage, parts clamping and looking for is standard, increasing the cooling fluid, guarantee the alignment precision of the hole is required. In addition,according to the working principle and characteristics of measuring instrument, by increasing the measuring distance of base hole section, select two section, to establish a common axis way, reduces the measuring process of the effect of alignment error, truthfully and accurately reflect the shell hole measurement results to ensure that the system of alignment error.Through this topic research, the reasonable design precision of coaxiality is determined,the reasonable processing technology optimization measures and the improved measurement methods are put forward, ensure the accuracy of shell hole series coaxial degree,to reduce the production cost, improve the reliability of coal winning machine cutting part,and extend the service life of components is of great significance to solve the practical problems affecting the quality of the products of the company for years.