• 10% of the parts should be outside the lower gauge specification limit and beyond the 25% of
the parts near the specification as described above.
Depending on the characteristic, the above parts should be independently measured with a variable gauge
(such as a CMM or other known standard) so that the physical measurement of each part is known.
Note: When measuring a true attribute that cannot be measured with a variable gauge, use other means such
as experts to pre-determine which samples are good or non-conforming.
Gauge R&R for tires
All tire tier 1 suppliers must follow the 10x10 Gauge R&R methodology for tire uniformity defined by
Corporate Engineering Test Procedure CETP 04.04-E-414, Gauge R&R for Tire Uniformity at Low Speed. The
results are to be reported for both the clockwise and counter clockwise directions separately. The CETP is
available from the Ford tire Product Development Engineer.
Gauging must use production intent holding fixtures such that the part is held the same way as installed in the
vehicle or Powertrain.
See the AIAG published Measurement Systems (MSA) Analysis manual for guidance on other MSA
approaches.
9 Dimensional Results (PPAP section 2.2.9)
Dimensional results are to be documented on the “Prototype or Production Measurement Results” section of the
APQP/PPAP Evidence Workbook, GD&T sheets, checked (ballooned) print or other method of recording the
results acceptable to the STA engineer.
At least 5 parts are to be measured and individual results from all Ford specified dimensions are to be recorded.
The Annual Dimensional Layout requirement (see ISO/TS 16949 customer specifics) shall be included in the
Control Plan.
10 Material Test Results (PPAP section 2.2.10.1)
Where Ford specifies that materials are to be purchased from an approved sub-tier supplier, the organization
should contact the Ford buyer to determine appropriate materials suppliers.
11 Initial Process Studies (General) (PPAP section 2.2.11.1)
Designation of characteristics for demonstration of process capability
Where the part does not have any Ford-designated special characteristics (CC, SC, or HI – see the Ford FMEA
Handbook), the organization shall select part characteristics for which process capability is to be demonstrated,
and include the selected characteristics in the Control Plan. The selection of these tier 1 supplier designated
part characteristics is to be included in the special characteristics approval process, recorded on the SCCAF and
may be identified as Characteristic classification “Other”.
Where Critical Characteristics are identified in the Special Characteristics Communication and Approval form
(SCCAF), the physical characteristics (e.g. dimensional or material) leading to the compliance of the Critical
Characteristic are identified on the SCCAF with the control method, regardless of the point of manufacture of
the Critical Characteristics in the supply chain (tier 1 through tier N). The SCCAF is available through
APQP/PPAP Evidence Workbook (through https://web.qpr.ford.com/sta/APQP.html)
This also applies to Ford-directed sub-tier suppliers without a Multi-Party Agreement.
• 10% of the parts should be outside the lower gauge specification limit and beyond the 25% of
the parts near the specification as described above.
Depending on the characteristic, the above parts should be independently measured with a variable gauge
(such as a CMM or other known standard) so that the physical measurement of each part is known.
Note: When measuring a true attribute that cannot be measured with a variable gauge, use other means such
as experts to pre-determine which samples are good or non-conforming.
Gauge R&R for tires
All tire tier 1 suppliers must follow the 10x10 Gauge R&R methodology for tire uniformity defined by
Corporate Engineering Test Procedure CETP 04.04-E-414, Gauge R&R for Tire Uniformity at Low Speed. The
results are to be reported for both the clockwise and counter clockwise directions separately. The CETP is
available from the Ford tire Product Development Engineer.
Gauging must use production intent holding fixtures such that the part is held the same way as installed in the
vehicle or Powertrain.
See the AIAG published Measurement Systems (MSA) Analysis manual for guidance on other MSA
approaches.
9 Dimensional Results (PPAP section 2.2.9)
Dimensional results are to be documented on the “Prototype or Production Measurement Results” section of the
APQP/PPAP Evidence Workbook, GD&T sheets, checked (ballooned) print or other method of recording the
results acceptable to the STA engineer.
At least 5 parts are to be measured and individual results from all Ford specified dimensions are to be recorded.
The Annual Dimensional Layout requirement (see ISO/TS 16949 customer specifics) shall be included in the
Control Plan.
10 Material Test Results (PPAP section 2.2.10.1)
Where Ford specifies that materials are to be purchased from an approved sub-tier supplier, the organization
should contact the Ford buyer to determine appropriate materials suppliers.
11 Initial Process Studies (General) (PPAP section 2.2.11.1)
Designation of characteristics for demonstration of process capability
Where the part does not have any Ford-designated special characteristics (CC, SC, or HI – see the Ford FMEA
Handbook), the organization shall select part characteristics for which process capability is to be demonstrated,
and include the selected characteristics in the Control Plan. The selection of these tier 1 supplier designated
part characteristics is to be included in the special characteristics approval process, recorded on the SCCAF and
may be identified as Characteristic classification “Other”.
Where Critical Characteristics are identified in the Special Characteristics Communication and Approval form
(SCCAF), the physical characteristics (e.g. dimensional or material) leading to the compliance of the Critical
Characteristic are identified on the SCCAF with the control method, regardless of the point of manufacture of
the Critical Characteristics in the supply chain (tier 1 through tier N). The SCCAF is available through
APQP/PPAP Evidence Workbook (through https://web.qpr.ford.com/sta/APQP.html)
This also applies to Ford-directed sub-tier suppliers without a Multi-Party Agreement.
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• 10% of the parts should be outside the lower gauge specification limit and beyond the 25% of
the parts near the specification as described above.
Depending on the characteristic, the above parts should be independently measured with a variable gauge
(such as a CMM or other known standard) so that the physical measurement of each part is known.
Note: When measuring a true attribute that cannot be measured with a variable gauge, use other means such
as experts to pre-determine which samples are good or non-conforming.
Gauge R&R for tires
All tire tier 1 suppliers must follow the 10x10 Gauge R&R methodology for tire uniformity defined by
Corporate Engineering Test Procedure CETP 04.04-E-414, Gauge R&R for Tire Uniformity at Low Speed. The
results are to be reported for both the clockwise and counter clockwise directions separately. The CETP is
available from the Ford tire Product Development Engineer.
Gauging must use production intent holding fixtures such that the part is held the same way as installed in the
vehicle or Powertrain.
See the AIAG published Measurement Systems (MSA) Analysis manual for guidance on other MSA
approaches.
9 Dimensional Results (PPAP section 2.2.9)
Dimensional results are to be documented on the “Prototype or Production Measurement Results” section of the
APQP/PPAP Evidence Workbook, GD&T sheets, checked (ballooned) print or other method of recording the
results acceptable to the STA engineer.
At least 5 parts are to be measured and individual results from all Ford specified dimensions are to be recorded.
The Annual Dimensional Layout requirement (see ISO/TS 16949 customer specifics) shall be included in the
Control Plan.
10 Material Test Results (PPAP section 2.2.10.1)
Where Ford specifies that materials are to be purchased from an approved sub-tier supplier, the organization
should contact the Ford buyer to determine appropriate materials suppliers.
11 Initial Process Studies (General) (PPAP section 2.2.11.1)
Designation of characteristics for demonstration of process capability
Where the part does not have any Ford-designated special characteristics (CC, SC, or HI – see the Ford FMEA
Handbook), the organization shall select part characteristics for which process capability is to be demonstrated,
and include the selected characteristics in the Control Plan. The selection of these tier 1 supplier designated
part characteristics is to be included in the special characteristics approval process, recorded on the SCCAF and
may be identified as Characteristic classification “Other”.
Where Critical Characteristics are identified in the Special Characteristics Communication and Approval form
(SCCAF), the physical characteristics (e.g. dimensional or material) leading to the compliance of the Critical
Characteristic are identified on the SCCAF with the control method, regardless of the point of manufacture of
the Critical Characteristics in the supply chain (tier 1 through tier N). The SCCAF is available through
APQP/PPAP Evidence Workbook (through https://web.qpr.ford.com/sta/APQP.html)
This also applies to Ford-directed sub-tier suppliers without a Multi-Party Agreement.
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