Today, many quality control texts have been written which highlight modifications to Shewhart's techniques. Most of these enhancements have been born of the need to better support modern manufacturing methods and challenges.
Multiple Process Streams: In many industries, one is faced with the need to control multiple independent process streams producing the same desired output.
Like a process, a measurement system is influenced by many sources of variation. These influences may have adverse affects.
Traditional variables control charts monitor two parameters or statistics - central tendency and variability. These are usually expressed using subgroup averages and subgroup ranges.
With InfinityQS software, any data in the database can be combined and/or compared on any chart. Combine any combination of parts, processes and test all on the same chart.
By implementing SPC, you have demonstrated your commitment to process control on the shop floor. But, what about understanding the big picture differences between manufacturing lines, shifts and products that are at the heart of cost containment and profitability?
Are you looking to implement SPC on your shop floor, but find yourself frustrated with using software designed primarily for office use?
Pre-Control charts allow the comparison of individual measurements to specification limits. In this way, Pre-Control charts can be used to alert an operator to the potential for producing defective products.
Connecting to an ODBC Data Source: Anytime you launch an InfinityQS database application, such as ProFicient SPCEE, a data source must be specified.
Ethicon Endo-Surgery and others, InfinityQS has incorporated the FDA requirements for Electronic Signatures into our applications.
Traditional Pareto charts visually display defect codes and causes in a simple, easily understood bar chart format. Because of their simplicity, Pareto charts have not been considered powerful analysis tools.
This application note will show one approach as to how ProFicient SPC Software can be implemented in a frozen food environment.
Standard control charts for monitoring the defect rate of a process include the c-chart and the u-chart. C-charts can be used to monitor the actual "counts" of defects from a process.
Viewing OLE (object linking and embedding) documents can be done using the ProFicient toolbar. Any object that can be viewed in a Windows Operating System environment can be considered an OLE object.
InfinityQS applications support full multilingual language display capabilities. The ability to switch between different languages is only a matter of selecting a language preference and the new language will be displayed on all forms and menus.
The Kruskal-Wallis (KW) test is a non-parametric test used to compare three or more independent groups of data.
Viewing OLE (object linking and embedding) documents can be done using the ProFicient toolbar. Any object that can be viewed in a Windows Operating System environment can be considered an OLE object.
SPC practitioners applying control charts to processes with high Cpk (>2.00) are typically burdened with very narrow control limits relative to specification limits.
To create a Microsoft Access database for use with InfinityQS involves the following key operations:
1) Create and name a data source, 2) Create an empty .mdb database file, 3) Build InfinityQS™ tables
The Format Definition section specifies how a gage is accessed and how the data is parsed into the separate fields. The format definition can contain items such as gage initialization string, whether or not fields are comma or tab separated and character positions for the data.
Variation is present in everything we do. Indeed, no two things are exactly alike. One of the most widely accepted and quoted statistics for quantifying this variability is the standard deviation.
Minimizing piece-to-piece variation is critical in virtually any manufacturing situation, but sometimes within-piece variation is just as important.
When monitoring solution characteristics from chemical batches there are three sources of variation - average over time, within-batch and batch-to-batch.
True Position SPC is a Twofold Issue: Applying SPC to true position involves two issues: 1) the control aspect and 2) capability ratios. ProFicient manages both.