Modern inspection technologies enable fully automated inspection.
The post-process monitoring layer of the Productive Process Pyramid™ focuses on the monitoring and reporting activities that provide information on the outcome and route of completed processes. These informative controls can be used to influence subsequent activities.
Traceable verification of conformance
The post-process monitoring layer concerns checking the process and the finished part against their specifications, as well as logging process routes and outcomes.
These are informative controls applied after machining is complete.
Process logging records …
- events that happen during the machining process such as manual or automated changes to process parameters, offsets or co-ordinate systems
- interventions to the process which may have influenced the outcome
On-machine verification enables …
- inspection of critical features in the same environmental conditions as the metal-cutting process
- confidence in the stability of the machining process
Post-process reporting allows ...
- documented records of component conformance
- historical tracking of critical feature dimensions for machine condition monitoring and scheduled maintenance purposes
Modern inspection technologies enable fully automated inspection of even the most complex parts, often in a single set-up. This reduces the need for skilled inspectors to oversee quality assurance checks.
On-machine verification can detect component non-conformance before the set-up is broken down, so any remedial work can be performed there and then.
Renishaw's REVO®, PH20 and Equator™ are essential tools for fast, traceable reporting of part conformance to specification and logging of the route and outcome of cutting operations.
Productive Process Patterns
Educational article: (AP400) Productive Process Pattern: Process reporting
Productive Process Pattern™ from the post-process monitoring layer of the Productive Process Pyramid™. Most CNC control systems have the capability to send customised information through RS232 serial ports, an Ethernet connection, or to the hard disc of the CNC control. The reporting capability allows a traceable record of the ‘route’ used to manufacture a component to be stored along with the component inspection data. For example, it is possible to log any detail of machine updates, required re-machining, or tools that were broken.
Educational article: (AP403) Productive Process Pattern: Critical feature reporting
Productive Process Pattern™ from the post-process monitoring layer of the Productive Process Pyramid™. Select the critical features which are to be measured and reported, according to a set of criteria. Features should be reported where the failure of a feature would be indicative of a more serious process fault (e.g. the final feature machined with each tool); or when the position or dimension of a feature is dependent on other measured features or ‘in process’ calculations.
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White paper: Survival of the fittest - the process control imperative
In tough times, manufacturers focus on reducing their operating costs, but may not be able to afford to spend their way out by buying more productive machinery. With that pathway closed, what are the opportunities for radically reducing costs without replacing existing machines? This paper explores four areas where substantial savings can be found if firms are prepared to change the way they control their machining processes.
Educational article: (AP010) Productive Process Pattern: Productive Process Patterns™
Introduction to the Productive Process Patterns™ - solutions for intelligent process control within manufacturing