Effects of waste tire rubber powder mesh number and processing time to feature of rubber asphalt

The maximum tardiness in three-machine flowshop problem with separated setup,processing and removal time is discussed,where the setup time and removal time steps of the same job can overlap on three machines,but the processing time can not.

In such a case all the workpieces arrive in batches and each batch has exactly m workpieces to which the processing time required for each one depends on the time the batch containing it just arrives.

According to the effect of the technological parameter of the surface of abraser waterjet polish part on machining aim,concerning its machining time,target distance,jet pressure,jet rake,abraser grain size,abraser density and flow quantity,related experiments are conducted in this paper by means of orthog-onal experiment.

Aiming at the disadvantage of the pop NC simulate softwar on the simulation of the machining time, analyzed the add and moderate controlling of the Siemens 840D numerical control system and developed an accurate simulation system of the NC Program’s Machining Time, the precision rate of simulation is up to 90%.

This paper analyses the machining time error caused by taking the result of programmed feed-in speed (F) multiply interpolation cycle(Ts) as the length of tiny line(ΔL) which is used to approach the arc in the data sampling circular interpolation.

Two linear processing time functions used to model the job processing times characterized by position-dependent are discussed,that is p_i(v)=a\-i-b\-iv and p\-i(v)=a\-iv~(-b).