| 摘要 |
To roll form a worksheet by a turret punch press, at least one pair of coacting tools are mounted to the opposed turrets so that when those tools are rotated to the work location, they could be driven to a predetermined relative distance towards each other to make contact with the workpiece. The depth of the formed shape is determined by the relative distance the coacting tools are driven towards each other. By moving the worksheet at the same time that the coacting tools are making contact with the worksheet, roll forming of the worksheet is effected. By providing the coacting tools in the opposing indexing stations and synchronously rotating those stations, a complex pattern can be roll formed on a worksheet. For those patterns that have different depths, the instant invention turret punch press can either continuously adjust the relative distance between the tools as the worksheet is being moved to effect the different depths, or use different sets of tools that, when moved to the appropriate relative distance, can actually effect different depths on the worksheets. Alternatively, a number of passes can be effected on the worksheet by the same set of tools, with the tools being readjusted to form a given depth for each of the various passes. Another embodiment of the instant invention utilizes a pair of tool units each of which includes a plurality of in alignment tools that can coactingly rotate along the opposed surfaces of the worksheet to effect roll forming. |
