A tool for forming a plurality of spaced apart ribs in a sleeve

摘要

A tool (3) for mounting in a brake press (1) for forming a plurality of ribs (5) on a sleeve (6) comprises a former (16) having a corresponding number of rib forming ridges (25) for forming the ribs (5) for inserting into a tubular blank (9). A first die (17) for mounting on an upper platen (13) and a second die (18) for mounting on a lower platen (15) of the brake press (1) co-operate with the former (16) for urging the tubular blank (9) into engagement with the former (16) for sequentially forming the ribs (5) in pairs at 180{ to each other as the former (16) is indexed through respective angular increments until all the ribs (5) have been formed.