One kind of the chain cutting portion shearer cutting tooth geometry design method

The present invention provides a chain cutting portion shearer cutting tooth geometry design method, comprising the steps of: determining the relationship between the cutting depth of the cutting torque; Step two:: a determining step of cutting teeth and the force cutting depth relationship; step three: for cutting teeth break during coal cutting force analysis; step 4: determine cutting teeth contacting relationship with the coal wall; step five: calculate a single cutting tooth cutting process and coal wall contact area; step six: determining cutting tooth contact surface and to the sectional area of ​​the deep; step 7: calculated cutting teeth barrel diameter. The present invention is devised cutting teeth during the cutting unit size of the force receiving surface tends suffered cutting force equal size, cutting can more uniform wear of the teeth, the cutting teeth enhanced flexibility, improved cutting cutter cutting efficiency, help extend the life, increase the reliability of the shearer, access to better economic efficiency, at the same time, increase the cutting unit is fitted coal effect.