Charts plotted after the fact
When measurements are copied into Excel weekly, control charts only explain scrap that has already been made.
SPC software
SPC software with real-time control charts and Cpk
SPC software for manufacturing: X-bar and R charts, calculated control limits, Cpk/Ppk capability and Pareto analysis fed directly from digital inspections.
Measurements captured on the shop floor appear on control charts as soon as an inspection syncs — so drifting processes are visible before they become scrap.
The problems it solves
Manual capability studies
Calculating Cpk by hand for every characteristic is slow and error-prone.
Untrusted measurement data
If anyone can use any gauge, an out-of-calibration instrument can quietly corrupt your SPC data.
How it works in QCIN
- 1
Measure
Inspectors enter measurements against specification limits during a guided inspection.
- 2
Chart
QCIN groups readings into subgroups and plots X-bar and R charts with calculated limits.
- 3
Assess capability
Cpk and Ppk are calculated against your specification limits.
- 4
React
Out-of-control points and top defects point the team to where an NCR or CAPA is needed.
Key capabilities
X-bar & R charts
Control limits calculated automatically from subgroup data.
Capability indices
Cpk and Ppk calculated from inspection measurements against LSL/USL.
Pareto analysis
Rank defects so improvement effort goes where it matters most.
Calibrated gauges only
Measurement steps let inspectors pick or scan only gauges that are in calibration.
Shop-floor data capture
Measurements come from the same mobile inspections — no separate data collection tool.
Filters
View results by plant, shift and date range on the quality dashboard.
Frequently asked questions
What is SPC software?
Statistical process control software monitors process data with control charts to detect variation and prevent defects.
Does QCIN calculate Cpk and Ppk?
Yes, both are calculated from inspection measurements when specification limits are defined.
Do I need a separate SPC data collection tool?
No — QCIN's mobile inspection checklists collect the measurements that feed the SPC charts.
Which control charts does QCIN support?
QCIN currently plots X-bar and R charts for variable data plus Pareto charts for defects.
Related pages
Industries
Guides
See QCIN with your own parts and processes.
Start a free 14-day trial — no card required — or book a walkthrough with our team.