![hsmworks tombstone seekins spindle hsmworks tombstone seekins spindle](https://i-ams.com/wp-content/uploads/2020/03/fusion-360-1.png)
![hsmworks tombstone seekins spindle hsmworks tombstone seekins spindle](https://i.ytimg.com/vi/LVhiJfkMB4c/maxresdefault.jpg)
Mel points out that the rotary platters operate independently, so as one piece is being machined on one platter, the next platter in the sequence can be rotating into the starting position so that the cutting tool can move to it and resume machining. Open Your Own Machine Shop? Here is Advice On Starting Small These rotary platters add greatly to the flexibility of the HMC’s machining capability, applications manager Jerome Mel says. The machine’s three linear axes can combine with the coordinated rotary indexing motion of the platters and the rotary motion of the machine’s worktable to reach five sides of each workpiece on the face of the tombstone-and do some operations with all five axes moving at once (of course, the orientation of the cutting tool in the horizontal spindle cannot be programmed, so this is not five-axis machining for contours or sculptured surfaces). These tombstones provide programmable rotary platters enabling the HMC to do five-sided machining. Literally, new twists and turns are represented by the rotary capabilities of its five-axis tombstones.
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KME CNC (Irvine, California) has added some new twists and turns to this scenario-both literally and figuratively speaking. The productivity gains can be substantial. The more sides on the tombstone, the more sets of parts that can be machined without operator attention or idle time for a pallet change. Indexing the tombstone on the machine’s rotary table makes another set of workpieces accessible for machining. Multiple workpieces can be mounted per side. One of the key benefits of using a horizontal machining center (HMC) is the option to mount workpieces on a tombstone.