GlossaryAcme ScrewA leadscrew which uses an ACME threaded screw design with sliding surfaces between the screw and nut.
The Acme thread form uses a 29 degree thread angle with flat apex and valley. The Acme screw thread is stronger than V-profile 60 degree threads. Wear can be compensated for with a split nut. Typically found where large loads or accuracy is required as in vises or the lead screw of a lathe. Standardized variations include multiple-start threads, left-hand threads, and self-centering threads which are less likely to bind under lateral forces. [Back to Glossary] |
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