| 摘要 |
1,095,813. Tool changing apparatus. J. R. SADIER. April 9, 1965 [April 24, 1964], No. 15118/65. Headings B3B and B3T. A machine tool incorporating automatic tool changing means comprises a tool carriage 4 and support 5 movable over a first path towards and away from a workpiece secured in the machine, a conveyer device 8 supporting a number of tool carrier units 6A, 6B &c. and movable to convey these units over a second path which intersects the first path at a transfer station. Any selected one of the tool carrier units is transferred from the conveying device to the tool carriage by means operable on movement of the carriage past the transfer station the unit being transferred back to the conveyer device on reverse movement of the carriage past the transfer station. The conveying device may be in the form of a disc 9 rotatable about a horizontal or vertical axis having tool carrier units positioned around its periphery, or a rectilinear conveyer member 16, 17 coincident with the second path having the tool units linearly spaced thereon. The tool units are each secured to the conveyer device by spring-biased pivoted latches 25 mounted on the device which engage studs on the tool unit. When a particular unit is indexed to the transfer position the tool carriage is moved along the first path to the transfer position whereat cam means 47a, Fig. 7 (not shown), on a head portion 47 of the tool support 5 releases the latches 25 on the conveyer device and the tool unit is removed from the conveyer on to the tool carriage. This transfer means includes a fluid actuated tool unit locking means 36 which holds the tool unit securely on the tool carriage during its movement up to the workpiece and during its operation. The return movement of the tool carriage then permits by the same action the release of the fluid actuated locking means and the latching of the used tool unit back on to the conveyer device which is then indexed so as to bring the next tool required into the transfer station for a similar transfer operation. The conveyer device may be indexed manually or automatically. |
