With the application of precision hirth couplings indexing table in precison mechanical machining field

the needs for large load capacity is proposed. Based on the analysis of the structure of the hirth-coupling indexing table

the FEA and design and experiments are carried out on the parameters of hirth sharp

locking force and meshing state of the hirth. A new kind of gear lapping process is proposed

which improves the precision and efficiency of the hirth lapping

and finally guarantees the precision of the high load hirth couplings indexing table.