Recent Developments in Double-End Tenoners and Borers

Tenoning is not the most important operation for the double-end tenoner, so emphasis is on modifications and attachments to speed up secondary operations. Increased speed, the first consideration, brings up problems of more rapid wear of the chains, tracks, and sprockets, requiring more durable parts. The second consideration is to reduce the labor for the same quantity of pieces. Almost all recent installations include automatic transfers between machines. Coupled with automatic stackers, this results in great labor savings. A third approach is to reduce the down time of the machine for set-up changes. Naturally, a well-trained operator is one means of assuring the best performance of a machine. Reduction of repair time, safety, and versatility must also be considered. Being one of the basic operations in most plants, boring is an area that will get a lot of intensive study from now on. One of the most important fields to investigate is the relationship between bit speed and feed. Many boring problems may be solved by keeping the machine full, or by hitting every stroke. The reduction of set-up time is important, too, in the boring machine line.

You must be logged in to download any documents. Please login (login accounts are free) or learn how to Become a Member