WORKHOLDING
ger improvements that we did, one is we did a different type of brush seal from the original D688.” The older vise had a manually pressed seal, meant to keep debris and coolant from the screw and nut assembly, but it was tricky to replace, Mardaus said. The new design features a special wave washer that creates force to hold the brush seal in place, and makes the task of removing the old seal and installing a replacement much easier because it’s a fi tted component, Mardaus said. Another change is the stationary itself. The 688 has a stationary that was bolted through the body into the stationary from the underside, while the DX6 uses bolt-downs from the top that make it easier for the op- erator to remove. That’s because he doesn’t have to take it off the machine to get to the mounting bolts. The new design was also shown to reduce defl ection in the stationary jaw. Also new is the DX6’s ability to be mounted on a grid plate, something that wasn’t possible with the 688, said Steve Tschida (pronounced “cheetah”), engineering manager.
The new tool will mount on a 40-mm (1.57"), 50-mm (1.96") or 50.8-mm (2.0") grid pattern, an aid to precisely locating the vise on the table, which helps reduce setup time. Another improvement relates to worktool changeover. Because the DX6 is narrower (7.391" [18.77 mm] than the
DX688’s 8.75" [22.23 mm] width), it may be possible to fi t more of them on the worktable and maximize tool use. “When it comes to utilizing your spindle and your ma- chine, if you make one part at a time you [may] have many tool changes,” said Tschida. “So if you put two parts on the table, you cut your tool change time in half, if you put three parts you cut [it by one-third]. So density is sometimes im- portant to help boost productivity.” Kane said, “You can put more parts on the plate or you can hold a longer part.” Kurt is promoting other design and engineering elements, including the DX6’s lighter weight (65 lb vs. the 688’s 69 [29.25 vs. 31 kg]), its larger opening (9" [22.9 cm] vs. the 688’s 8.8" [22.4 cm]), and pull-style operation.
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