Precision machining · tolerance band
When tolerances are tight, a worn tool or a drifting spindle turns into scrap before anyone notices. MDCplus shows tool, spindle and cycle data as they change, so you correct the process before the part leaves the tolerance band.
Machine monitoring for precision machining means collecting process data from the machine automatically, so you see tool condition, spindle condition, cycle time drift, stops and scrap before they show up as parts out of tolerance. It does not measure the part itself. It shows the process signals around the part, and those change before the dimension does.
What moves first
Four signals worth watching. Each one changes before the dimension does. Shapes below are illustrative.
Straight answers
Compare each tool's recent behaviour with its own normal range: vibration, load-related signals the controller provides, and cycle time per part. A tool that drifts from its range is changed on the signal, not on the scrap.
Scrap entries are recorded per machine, shift and operator. Comparing them shows whether the problem follows one machine, one tool or one shift.
A cycle that slowly gets longer often means a worn tool, a changed material batch or a feed override. It is visible long before the part is measured.
Spindle vibration trends show bearing problems building up. You plan the repair instead of finding out from a ruined batch.
Honest scope
Controllers, old and new
MDCplus connects to CNC machines and PLCs over more than 100 open protocols, including HEIDENHAIN, Siemens Sinumerik, FANUC (FOCAS 2), Mazatrol, Okuma OSP and Haas. Older machines connect through a terminal, PLC signals or sensors. It is installed on premise and can work fully inside a closed network without internet access.
Open the machine connectivity checker to see the connection route for your controller.
Tell us the machines, the controllers and the parts that give you scrap. We will answer which signals can be read and what a sensible first step looks like.
Watch the signals that change as a tool wears: tool data from the controller where it is available, spindle vibration and cycle time drift. When they move away from their normal range, the tool is changed before the part leaves tolerance.
No. MDCplus does not measure parts. It shows the state of the process around them, so inspection finds fewer surprises and you know which machine, tool and shift a bad part came from.
Tool data and tool changes, spindle vibration, cycle time per part and its drift, stops and alarms during the cycle, and scrap with the machine and shift it came from.
Part counts and scrap entries are recorded per machine, shift and operator, so scrap can be compared across machines and over time instead of being found at final inspection.
Yes. MDCplus supports HEIDENHAIN (LSV2 / DNC), Siemens Sinumerik, FANUC (FOCAS 2), Mazatrol, Okuma OSP and Haas, plus PLCs and older machines through terminals, PLC signals or sensors.
Yes. MDCplus is installed on premise and can work fully inside a closed network without internet access.
The first machine is connected within 1 to 2 hours. MDCplus is a perpetual license per data collection point, where one PLC or HMI is one license, and the price includes implementation and the server license.
Technical library
Last updated: . Prepared by the MDCplus team.
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