Nominal Values

In a production process, a nominal size or an actual size is specified, for an item. However, there can be a slight but accepted deviation. This deviation is referred to as tolerance.

Nominal value, in Quality, is specified to provide tolerance limits for a nominal size, accommodating deviations, if any.

Earlier, it was possible to only measure values between the Norm and the Upper Limit and Lower Limit of inspection orders. The upper limit always had to be greater than the norm and the lower limit always had to be less than the norm.

Using the nominal value functionality, you can specify a tolerance range for a nominal value. You can specify a pre-defined nominal table based on accepted engineering standards.

In some cases, the tolerance level must be greater or lesser than the nominal values. For example, matching the diameter of the shaft with that of the hole. The upper and lower limits specified for the diameter of the hole must be greater than the nominal value, while the upper and lower limits specified for the diameter of the shaft must be lesser than the nominal value.

This functionality can also be used to process inspection orders.

Master Data:

As a part of the master-data set up, you must define:

  • A specific nominal range value for the item characteristic
  • A corresponding tolerance range for the item characteristic
To set up the master data:
Step 1. 

In the Nominal Value Chart Name (qmptc0181m000) session, specify a chart name. The nominal value range is specified for this chart name.

Step 2. 

In the Nominal Value Chart Type (qmptc0182m000) session, specify a Chart Type.

Step 3. 

In the Nominal Value Tables (qmptc0185m000) session, for a chart name and chart type, specify the Nominal Unit of Measure and a Tolerance Unit of Measure.

Step 4. 

In the Nominal Table (qmptc0685m000) session:

  • In the Nominal Size tab, define a range of nominal values for which tolerance values are specified.
  • In the Tolerance Limit tab, specify the Tolerance Standard.
  • In the Tolerance Matrix tab, specify the lower and upper tolerance limits for the corresponding nominal size range.

Note The tolerance values can be negative, and correspond to the tolerance unit of measure.

Step 5. 

In the Standard Test Procedures (qmptc0110m000) session, specify a characteristic, for the specified standard test procedure.

Step 6. 

In the Standard Test Procedure Characteristics (qmptc0115m000) session, in the Limits Tab:

  • Set the Value Type to nominal. If the value type is not nominal, the fields—chart name, chart type, nominal value, and tolerance standard are disabled.
  • Specify the Chart name and the associated chart type.
  • Specify the required tolerance standard.
  • Specify a nominal value. LN defaults the Upper Limit and Lower Limit fields based on the tolerance values specified in the Nominal Table (qmptc0685m000) session.
To implement the nominal value and the tolerance functionality:
Step 1. 

Create an inspection order for a related order of any origin, containing a standard test procedure with nominal value and tolerance limits specified.

Step 2. 

In the Inspection Order (qmptc1100m100) session, on the lines tab, select the inspection order line to view the inspection line details in the Inspection Order Lines (qmptc1101m000) session.

Step 3. 

In the Inspection Order Lines (qmptc1101m000) session:

  • Click the limits tab.
  • Review the test data (the chart name, chart type, tolerance limit, the nominal value and the upper and lower tolerance limits) that Infor LN defaults from the specified in the Standard Test Procedure Characteristics (qmptc0115m000) session.
Step 4. 

In the Inspection Order (qmptc1100m100) session, In the test data tab, specify a measurement value that lies between the upper and lower tolerance limits.

Step 5. 

Infor LN sets the result of the inspection in the Inspection Order (qmptc1100m100) session to Pass.

Note If a value above or below the range is specified, the test result is set to Fail.

Step 6. 

Compete and process the inspection order and the order inspection.

Step 7. 

Review the result data and the impact of the inspection process in the related origin order sessions.