Resistance rollers for multipass rolling of large profile threads
Based on the research process thread rolling identified the main causes of the accumulated pitch error and found that the maximum pitch acme thread, which is available in 1 pass - 6 mm. Thread with higher pitch can be obtained by multipass thread rolling. When the number of passes the very possibility of rolling depends on the design of the intake rollers. Increasing the number of passes leads to a decrease in the hardening of workpiece and the contact pressure and as a consequence of the high stability of thread rolling rollers.