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Modular Tooling and Tool Management Part 2

Tham khảo tài liệu 'modular tooling and tool management part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Modular Tooling and Tool Management 221 Optional tool stops can be programmed into the CNC controller for just this purpose. By presetting the tooling in conjunction with each cutting head the coupling s guaranteed repeatability ensures that the cutting edge is both accurately and precisely positioned relative to the workpiece s orientation and datum. This fact negates the need for the operator to have to individually adjust all of the tooling offsets for different workpiece configurations. Yet another approach to the lock-up sequence and design of modular quick-change tool adaptor systems is depicted in Fig. 119. The mechanical-locking interface is via a Hirth gear-tooth coupling mechanism5. This system offers both a high positioning accuracy in combination with an almost perfect transmission of the torque effects induced by the offset in cantilevered turning and grooving tooling whilst cutting. Clamping consists of draw-bar locking after insertion of the male and female gear teeth of the desired cutting unit into the adaptor. These changeable cutting units also require accuracy and precision in the manufacture with their location and clamping being achieved through axial movement of a draw-bar. The draw-bar can be either manually or automatically moved by using a torque motor. This draw-bar locating mechanism allows both the male and female coupling geared faces to be firmly locked and assembled together. The Hirth gear-tooth coupling has a repeatability of 0.002 mm with tooling system that can be mounted in either a disk drum row flat or chain magazine. The Hirth coupling has a standardised installation with identical dimensions of Ộ40 and Ộ63 mm for the tooling system selected. These modular cutting mechanical interfaces are directly mated together allowing internal coolant flushing and as such with use will not become polluted during its lifetime s operation. As with all of these modular quick-change tools they can have their tooling of internal or external .