The two-spindle VMC has just one table and one set of axes. Its work is thus machining in stereo—the machine makes two identical parts at once. A single cycle, programmed just as it would be for a standard VMC, executes the same tool path simultaneously on two workpieces.
A spindle is a rotating shaft with a fixture for holding a tool (in the case of a milling, grinding, or drilling spindle) or a workpiece (in the case of a turning spindle). The spindle shaft serves as a support, a positioner, and a rotary drive for the tool or workpiece.
The two-spindle Machining Center output where space and other factors are constrained. With W-axis compensation for Z-height differences, setups don’t have to be perfect to use two spindles in tandem.
The Global Two-Spindle Machining Center market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Doosan DMP 500/2SP – Doosan recently introduced a two-spindle VMC, its DMP 500/2SP. Company representatives recently spoke with me about the role and application of the machine.
Its promise could not be plainer to state: Produce two parts rather than one within a given amount of cycle time and operator attention, and with only a slight increase in footprint compared to a single-spindle machine.
While the company says its two-spindle machine has been sold exclusively into high-volume production plants so far, that promise conceivably also makes sense for space-constrained job shops whose business includes higher-volume work.
However, one addition is a single W axis. Doosan’s very first user of the two-spindle machine was a high-volume manufacturer fitting this description. Doosan designed the two-spindle DMP machine with this user in mind after the company came to the builder with its problem.
The production demand this plant faced for a new set of parts would have required 66 VMCs—too many for the maximum potential space the plant had available. Instead, the manufacturer asked for a machine with two spindles. Doosan’s development of this solution enabled the company to buy only 33 machines instead. It has since installed more of them for other part numbers.
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