Statistical process control (SPC/SQC)
Quality monitoring...
The P
lant
M
aster
SPC/SQC module keeps your process
within the specifications required for optimum product
quality and generates the documentation your customers
demand for their quality assurance programs.
For every product, the user defines the quality and process
control plan including the parameters to be monitored,
the sampling strategy as well as calculations to be used.
This way, the user configures the SPC/SQC package to fit
his needs.
A link with the P
lant
M
aster
scheduling software assures
an automatic generation of inspection orders at the start
of the production order. Production orders for which the
“quality checks” are over due are automatically high-
lighted by the system.
... in real time
The system samples and stores process parameters as well
as part related data and attributes. Process parameters
are collected automatically using the Data Units at the
machines (serial interface with the machine micropro-
cessor or analog inputs) while part related information
is sampled directly from measurement devices such as
scales and calipers or entered manually through a PC
connected to the system.
A special SPC/SQC touch screen terminal is available
for convenient entry of sample data on the production
floor.
SPC/SQC alarms are automatically solved in the production
(cfr: auto flagging).
SPC/SQC reporting and quality
certificates
The P
lant
M
aster
SPC/SQC software offers an extensive set
of SPC/SQC reporting tools: control charts for variables
and attributes, normality testing, histograms and process
capability calculations. For variables, the user can choose
between X-R and X-S charts. P, NP as well as pareto charts
are available for attributes. The software automatically
calculates alarm and warning limits.
The system is set up in such a way that the user himself
can define how the calculations need to be done (FORD
Q101, DGQ), which SPC/SQC rules need to be applied
(check for trends, runs, etc.) and which type of control
charts should be made. These settings can be modified
for every single product.
An integrated editor allows the user to generate “quality
certificates” at the end of each production run.
