// ROBOTICS AND SMART FACTORIES TERM

Cp

A process capability index that measures how well a process can produce output within specified limits, assuming the process is centered.

Cp — illustration from Wikipedia
Image via Wikipedia

TECHNICAL DEFINITION

Cp (Process Capability) is a statistical metric quantifying a process's potential to meet specification limits, calculated as the ratio of the specification width to six standard deviations of the process, assuming the process mean is centered.

BACKGROUND

The IMSAI 8080 is an early microcomputer released in late 1975, based on the Intel 8080 and S-100 bus. It is a clone of its main competitor, the earlier MITS Altair 8800. The IMSAI is largely regarded as the first "clone" microcomputer. The IMSAI machine runs a highly modified version of the CP/M operating system called IMDOS. It was developed, manufactured and sold by IMS Associates, Inc.. In total, between 17,000 and 20,000 units were produced from 1975 to 1978.

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SYNONYMS & ALIASES

  • Process Capability
  • Potential Capability Index

USAGE NOTE

A higher Cp value indicates a more capable process, but it doesn't account for process centering.

DEVELOPERS

Organizations developing technology related to Cp.

  • Minitab

    Develops statistical software used extensively by quality engineers to analyze manufacturing data. The software provides comprehensive tools for Statistical Process Control (SPC), including the calculation and visualization of process capability indices like Cp and Cpk.

  • InfinityQS

    A leading provider of real-time Statistical Process Control (SPC) software. Their platform, ProFicient, helps manufacturers monitor process performance, analyze variability, and calculate key metrics such as Cp to ensure products are manufactured within specification limits.

  • Hexagon Manufacturing Intelligence

    Provides a portfolio of metrology hardware and software solutions for quality control. Their Q-DAS software is a standard for statistical process control, enabling manufacturers to collect measurement data and perform in-depth capability analysis, including Cp calculations.

  • Siemens Digital Industries Software

    Offers the Opcenter Quality software suite, a Quality Management System (QMS) integrated into their digital manufacturing portfolio. It provides robust SPC capabilities to monitor production processes in real-time, analyze performance, and ensure process capability (Cp) meets required standards.

  • Plex Systems (a Rockwell Automation company)

    Delivers a cloud-based Smart Manufacturing Platform with integrated MES and QMS functionalities. The platform allows for real-time data collection from the shop floor to perform SPC and calculate process capability metrics like Cp.

  • DataLyzer International

    Specializes in Statistical Process Control (SPC) software solutions. Their software enables real-time data acquisition, charting, and analysis for quality improvement, with a core focus on calculating and reporting process capability indices such as Cp and Cpk.

  • ETQ (part of Hexagon)

    Provides the Reliance Quality Management System (QMS) software. The platform includes an SPC module that allows manufacturers to analyze process data, monitor performance against specification limits, and calculate capability indices like Cp to drive continuous improvement.

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