| 摘要 |
PROBLEM TO BE SOLVED: To convey and travel the large number of change tools and a tool pot by a small driving force without generating noise by rolling-contacting an outer ring of bearing attached to the tool pot with a guide rail provided on a tool magazine or a tool-run out prevention rail. SOLUTION: When a chain horizontally travels above a tool magazine, it travels on a guide rail 16 while rolling-contacting with an outer ring 13A of a bearing 13. In this case, the outer ring 13A rolls on the guide rail 16 without being locked by providing a clearance between the above portion of the outer ring 13A of the bearing 13 and a tool pot-run out prevention rail 17. Thereby, since a moving resistance during chain traveling can be made small and a whole weight of the tool pot 7 and the tool is received by the bearing 13, a tension applied to the chain can be made small and the driving force can be reduced. |
