Continued to use of tool wear, spindle axial force will be increase, leading to bearing damage, but will also affect the accuracy and effectiveness of engraving.

This paper deals with the mechanical behaviors of steel-concrete composite beam and effective width of concrete slab on the axial force and the bending moment together function, based on the past job.

The mechanics of its performance are studied by researching the deformation of excavation, the force of anchor and the distribution of axial force.