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AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQP/CONTROL PLAN CQI Wessex -
AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQP/CONTROL PLAN CQI Wessex -
AUTOMOTIVE PROGRESS SINCE 1990
AUTOMOTIVE PROGRESS SINCE 1990
WHAT CHANGED
WHAT CHANGED
ISO/TS16949
ISO/TS16949
AUTOMOTIVE REQUIREMENTS
AUTOMOTIVE REQUIREMENTS
Advanced Product Quality Planning (APQP)
Advanced Product Quality Planning (APQP)
Advanced Product Quality Planning
Advanced Product Quality Planning
Product Quality Planning Timing Chart
Product Quality Planning Timing Chart
APQP  Project Scope
APQP Project Scope
APQP  Project Scope
APQP Project Scope
Advanced Product Quality Planning (APQP)
Advanced Product Quality Planning (APQP)
Failure Mode & Effect Analysis (FMEA)
Failure Mode & Effect Analysis (FMEA)
DFMEA
DFMEA
DFMEA
DFMEA
DFMEA
DFMEA
DFMEA
DFMEA
PFMEA
PFMEA
PFMEA
PFMEA
PFMEA
PFMEA
PFMEA
PFMEA
Control Plan
Control Plan
Control Plan
Control Plan
Control Plan
Control Plan
Control Plan
Control Plan
Statistical Process Control
Statistical Process Control
Process Control System Model with Feedback
Process Control System Model with Feedback
Goals of SPC
Goals of SPC
Statistical Process Control
Statistical Process Control
Statistical Process Control
Statistical Process Control
Statistical Process Control
Statistical Process Control
Special Cause Variation
Special Cause Variation
Common Cause Variation
Common Cause Variation
Statistical Process Control
Statistical Process Control
General Rules for Interpretation
General Rules for Interpretation
Process Capability
Process Capability
Process Capability
Process Capability
Capability Indices
Capability Indices
Capability Indices
Capability Indices
Attribute Charting
Attribute Charting
What are the Benefits of SPC
What are the Benefits of SPC
Measurement System Analysis (MSA)
Measurement System Analysis (MSA)
Measurement System Analysis
Measurement System Analysis
Variable Gauge R&R study
Variable Gauge R&R study
Gauge R&R
Gauge R&R
Variable Gauge R&R study
Variable Gauge R&R study
Gauge R&R
Gauge R&R
Use of Graphical Techniques
Use of Graphical Techniques
Attribute Studies
Attribute Studies
Product Part Approval Process (PPAP)
Product Part Approval Process (PPAP)
PPAP
PPAP
PPAP
PPAP
AUTOMOTIVE PROGRESS SINCE 1990
AUTOMOTIVE PROGRESS SINCE 1990
Summary
Summary
Questions Thank you
Questions Thank you

: AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQPCONTROL PLAN CQI Wessex - 11 December 2012 John Skinner. : D Biddle. : AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQPCONTROL PLAN CQI Wessex - 11 December 2012 John Skinner.ppt. zip-: 4660 .

AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQPCONTROL PLAN CQI Wessex - 11 December 2012 John Skinner

AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQPCONTROL PLAN CQI Wessex - 11 December 2012 John Skinner.ppt
1 AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQP/CONTROL PLAN CQI Wessex -

AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQP/CONTROL PLAN CQI Wessex -

11 December 2012 John Skinner

rdaconsultancy.com

1

2 AUTOMOTIVE PROGRESS SINCE 1990

AUTOMOTIVE PROGRESS SINCE 1990

Best selling car in the UK in 1990 Ford Fiesta sold in EU 1.4, 1.6 CVH engines were very harsh and had early failures (valve guide wear, dropping valve seats damaging the engine). Rust was still a problem, though better than the 1970s & 80s.

Radio-cassette, some speaker adjustments, maybe electric windows. No a/c and definitely no climate control. No airbags, little in the way of crumple zones. Central locking on higher end models. Door mirrors had remote adjustment on top models. Security was very poor cars like the XR2 were being stolen by joyriders on a regular basis (epidemic levels in some areas). Car insurance costs on hot models went through the roof. No ABS, stability control etc. Cost around ?8500 roughly equivalent to ?15000 in todays prices

3 WHAT CHANGED

WHAT CHANGED

Improvements demanded by legislation (emissions, safety), safety (NCAP), competition (i.e. VW/Audi), consumer demand (phone compatibility, convenience features etc.) A thorough focus on improved product quality achieved through; computer modelling/simulation, enhanced testing techniques (bench and road), consumer feedback (JD Power), supplier capability, effective corrective action (8D) Increased use of electronics (particularly powertrain) Need to improve product reliability (reducing warranty/ product recall costs) Application of ISO/TS16949 and mandated use of Automotive Core Tools ?

4 ISO/TS16949

ISO/TS16949

Initiated as QS9000 in 1995, based on the requirements of ISO9001, but adds many automotive industry specific requirements (though only one additional documented procedure from ISO9001) Produced and controlled by the International Automotive Task Force (IATF) Members include; Ford, GM, VW/Audi, PSA, BMW, Chrysler, Renault, Daimler and major trade organisations across the globe Recognised and required as a prerequisite for becoming an approved supplier to the respective automotive customers

5 AUTOMOTIVE REQUIREMENTS

AUTOMOTIVE REQUIREMENTS

APQP; Advanced Product Quality Planning FMEA; Failure Mode & Effect Analysis Control Plan SPC; Statistical Process Control MSA; Measurement System Analysis These require a team approach (cross functional teams with management commitment) Automotive Industry Action Group (AIAG) manuals define basic requirements for application There are other requirements, based on the customer

6 Advanced Product Quality Planning (APQP)

Advanced Product Quality Planning (APQP)

ISO9001 requires Planning of Product Realisation; The Automotive industry goes further; Some customers refer to project management or APQP as a means to achieve product realization. APQP embodies the concepts of error prevention and continual improvement as contrasted with error detection and is based on a multidisciplinary approach. (extract from ISO/TS)

7 Advanced Product Quality Planning

Advanced Product Quality Planning

Why plan? What gets in the way of planning?

8 Product Quality Planning Timing Chart

Product Quality Planning Timing Chart

Concept Initiation /Approval

Program Approval

Prototype

Pilot

Launch

Planning

Planning

Product design

Process design

Validation

Production

Feedback assessment & corrective action

Product Design & Development Verification

Product & Process Validation

Plan & Define Programme

Feedback Assessment & Corrective Action

9 APQP  Project Scope

APQP Project Scope

2011 model year Range Rover minor changes

10 APQP  Project Scope

APQP Project Scope

2012/13 model year Range Rover - major project. New design, technologies, material aluminium, using self piercing rivets and aerospace sourced epoxy adhesive

11 Advanced Product Quality Planning (APQP)

Advanced Product Quality Planning (APQP)

Advantages; Thorough planning and improved decision making Shorter development timescales Simultaneous engineering (design & manufacturing) Early procurement of long lead time tooling/facilities Defined objectives, measured as project stages are achieved Defined project gateways, with key deliverables Improved use of resources Significant cost savings (known impact on company finances) Effective feedback & corrective action (enhanced with use of computer systems)

12 Failure Mode & Effect Analysis (FMEA)

Failure Mode & Effect Analysis (FMEA)

Typically used at design (DFMEA) and manufacturing process planning (PFMEA) stages FMEA - a systematic set of activities intended to: Recognise and evaluate the potential failure of a product/process and the consequential effects of failure (risk management) Identify actions that could eliminate or reduce the chance of the potential failure occurring (improvement) Document the entire process Needs a team approach to be successful

13 DFMEA

DFMEA

DFMEA

System

FMEA Number:

001

001

001

001

FMEA Team:

xxxxxxxx

Subsystem

FMEA Date: (Original)

xxxxxxxxxx

Team Leader:

xxxxxxxx

X

Component

xxxxxxx

(Revised)

Action Results

Item and Function/ Requirements

Potential Failure Mode

Potential Effect(s) of Failure

Severity

Class

Potential Cause(s)/ Mechanism(s) of Failure

Occurrence

Current Controls - Prevention

Current Controls -Detection

Detection

RPN

Recommended Action

Responsibility and Target Completion Date

Action Taken

Severity

Occurrence

Detection

RPN

9

5

5

225

9

3

3

81

14 DFMEA

DFMEA

DFMEA

System

FMEA Team:

xxxxxxxx

Subsystem

Team Leader:

xxxxxxxx

X

Component

Wheel hub

Item and Function/ Requirements

Potential Failure Mode

Potential Effect(s) of Failure

Severity

Class

Potential Cause(s)/ Mechanism(s) of Failure

Occurrence

Current Controls - Prevention

Current Controls -Detection

Detection

RPN

Wheel bolts; Support wheel & tyre Transmit loads to stub axle/vehicle suspension

Bolts fail after wheel impact with kerb

Loss of wheel,loss of control of vehicle, possible fatalities, resulting legal action

10

CC

Incorrect material grade (new hub nut design)

7

Design calculations

Pre design freeze test to failure vaidation

5

350

15 DFMEA

DFMEA

FMEA Number:

001

001

001

001

FMEA Date: (Original)

xxxxxxxxxx

(Revised)

Action Results

Recommended Action

Responsibility and Target Completion Date

Action Taken

Severity

Occurrence

Detection

RPN

Conduct a full virtual analysis using design FEA & simulation software (proven performance)

PTO engineering; Q1 2013

Virtual anlysis completed; results acceptable to spec. xxxx

10

7

2

140

16 DFMEA

DFMEA

Ignores manufacturing issues; i.e. manufacturing producing/using parts that are to specification Can direct design effort to critical/significant characteristics and improve design validation/ verification testing results, avoiding late design changes Identifies special characteristics that need to be controlled in manufacturing to assure product quality Provides a documented record of the analysis which can be used into the future (many vehicle recalls could have been prevented by effective DFMEA) Needs to be maintained as a live document; continual improvement

17 PFMEA

PFMEA

A PFMEA will follow the stages defined for the manufacturing route from material receipt, through the manufacturing stages to despatch Typically the manufacturing route will be defined on a process flow diagramme, including locations, machines, operation sequences etc.

18 PFMEA

PFMEA

PFMEA

System

FMEA Team:

xxxxxxxx

Subsystem

Team Leader:

xxxxxxxx

X

Component

Wheel hub/new design

Item and Function/ Requirements

Potential Failure Mode

Potential Effect(s) of Failure

Severity

Class

Potential Cause(s)/ Mechanism(s) of Failure

Occurrence

Current Controls - Prevention

Current Controls -Detection

Detection

RPN

OP 70; Finish machine bearing bores (CNC)/ dimensions to specification

Bearing ? oversize

Bearing wear (with warning), loss of wheel, loss of control of vehicle, possible fatalities, resulting legal action. 100% of product may be scrapped

9

CC

Incorrect tooling set up

5

Pre-set tooling used

Post operation gauging - 10%

6

270

19 PFMEA

PFMEA

FMEA Number:

001

001

001

001

FMEA Date: (Original)

xxxxxxxxxx

(Revised)

Action Results

Recommended Action

Responsibility and Target Completion Date

Action Taken

Severity

Occurrence

Detection

RPN

Install in-station gauging as part of machine upgrade

PTO engineering; Q1 2013

in-station gauging integrated into machine; auto lockout on detection

9

5

3

135

20 PFMEA

PFMEA

Focuses on potential for non-conforming product (in use and impact on manufacturing process including employee safety) and mistake proofing techniques Identification/prioritisation of potential failure modes and implementation of preventive/corrective action Focus on special characteristics Continual improvement Assumes product as designed will meet intent Should be extended to other areas; receiving, storage, transport, despatch etc. (complete process) Provide feedback to design (mistake proofing features etc.)

21 Control Plan

Control Plan

A documented description of the systems and processes required for controlling product This is a key output once the DFMEA and PFMEA analysis has been completed Applies to distinct stages; Prototype, Pre-launch and Production. Each part must have a control plan, but family control plans can be used where justified (e.g. a foundry producing many different castings)

22 Control Plan

Control Plan

Control Plan

Control Plan

Control Plan

N/A

Production Control Plan

OP 70; Finish machine bearing bores (CNC)

Finish machine; 25mm/min, CBN tip (XYZ)

xxxx

xxx, xxx, aaa, bbb, ccc

#REF!

70

XXX CNC machining centre

Bearing Inner Bore diameter

CC

75 +0.008 -0.000 mm 0.003 mm run out max

In cycle gauging.

Wheel Hub / new design

#REF!

#REF!

Part #:

Prepared By:

Prepared By:

Part Name/Description:

Part Name/Description:

Core Team:

Core Team:

Notes:

Latest Change Level:

Latest Change Level:

Supplier/Plant App./Date:

Supplier/Plant App./Date:

Vendor ID:

Other Approval/Date:

Other Approval/Date:

Supplier Plant/Code:

Supplier Plant/Code:

Oper. #

Process Description

Machine/Device/Jig/Tools

Characteristics

Characteristics

Characteristics

CC

Item#

Product

Process

SC

Process/Pdt. Spec./Tolerance

G.ID

23 Control Plan

Control Plan

xxxxx

xxxxx

xxxxx

In cycle gauging.

100%

100%

Machine control datalogger

Lock out; setter informed, machine checked and re-set. Suspect material quarantined; (Corrective Action Report - CAR)

Lock out; setter informed, machine checked and re-set. Suspect material quarantined; (Corrective Action Report - CAR)

Date (Original):

Date (Original):

Customer Engg. Appr./Date (Opt):

Customer Engg. Appr./Date (Opt):

Cust. Quality Appr./Date (Opt):

Cust. Quality Appr./Date (Opt):

Other Approval/Date (Optional):

Other Approval/Date (Optional):

Control Plan No.:

Control Plan No.:

CP001

CP001

CP001

Methods

Eval. Mst. Technique

Sample Size

Sample Frequency

Control Method

Reaction Plan

24 Control Plan

Control Plan

Identifies the controls required to ensure product quality with a focus on special characteristics Defines the reaction plans required to be implemented where non-conformance is identified (containment of product, 100% inspection to ensure process becomes stable and capable) Is an output from the FMEA process

25 Statistical Process Control

Statistical Process Control

Traditional inspection techniques (patrol inspection, batch sampling etc.) rely on detection, which is wasteful as time and resources are put into producing parts that are not always useable Prevention verses detection; i.e. not producing the non-conforming parts in the first place is an obvious preferred situation If we can predict the process output, then we may be able to ensure conforming parts Statistical techniques can be used for process control

26 Process Control System Model with Feedback

Process Control System Model with Feedback

Manufacturing Process

People Equipment Materials Methods Environment

Product

Customers

Inputs

Feedback from Customers

Statistical Process Control (SPC)

Identifying changing expectations; direct feedback on product quality

27 Goals of SPC

Goals of SPC

To achieve a state of statistical control (stability) To maintain a state of statistical control (stability over time; prevention verses detection) To improve process capability

28 Statistical Process Control

Statistical Process Control

Taking action on the result of the output of a process (traditional inspection techniques) permits waste rejected/reworked product, wasted resources, potential for rejects to escape the process Understanding the variation of the process and applying statistical techniques allows for predictable process output (capability) To do this, we need to understand the types of variation present in the process

29 Statistical Process Control

Statistical Process Control

Machining process; part dimensions vary from each other

If the output is stable (only common cause variation), the results form a pattern that can be described as distribution

Size

Size

30 Statistical Process Control

Statistical Process Control

Common cause variation; inherent in the process backlash/clearances, coolant feed, machine tolerances

Special cause variation (or assignable cause) machine set up, material change, environment

31 Special Cause Variation

Special Cause Variation

If special causes of variation are present, the process output is not stable over time and is not generally predictable; we cannot always use sampling and SPC to control the process.

Target line

Predictable ?

Time

Size

32 Common Cause Variation

Common Cause Variation

If only common causes of variation are present, the output of a process forms a distribution that is stable over time and is predictable; we can then monitor the process using sampling and SPC charts

33 Statistical Process Control

Statistical Process Control

_ X Range Control chart (AIAG SPC manual)

34 General Rules for Interpretation

General Rules for Interpretation

A point outside a control limit 7 points in a row on one side of the centreline 6 points in a row steadily increasing or decreasing 2 out of 3 points more than 2 standard deviations from the centreline (same side) 4 out of 5 points less than one standard deviation from the centreline (same side)

35 Process Capability

Process Capability

Capability indices are able to summarise process performance as a number to reflect how well the process will meet customer requirements (specification). They will indicate; - How variable the process is (i.e. spread of results) - Where the process output is in relation to the specification limits.

36 Process Capability

Process Capability

Upper specification

Lower specification

Process variation or spread

Tolerance

37 Capability Indices

Capability Indices

Process capabilities are an index produced by comparing the observed process variation or spread against the required tolerance. Examples include; Capability Index Cp = USL - LSL 6 ? (process variation) _ _ Capability Index Cpk = USL x OR x - LSL (largest of) 3 ? 3 ? i.e. Worst case result Cpk will indicate the position of the process relative to the specification (i.e. centering)

38 Capability Indices

Capability Indices

If the process data has a normal distribution, the following can be used to interpret Cpk: Cpk Approximate proportion out of spec 1.33 63/1,000,000 1.67 0.6/1,000,000 2.0 0.02/1,000,000 (Where the process is centred between the specification limits)

39 Attribute Charting

Attribute Charting

Attribute data is the result of inspection or testing that produce a fixed result and cannot be measured using measurement equipment e.g. number of paint defects on a door panel, number of rejected units from a functional test batch, number of weld failures on a floor-pan assembly Attributes can also be monitored using control charts with control limits to determine long term stability

40 What are the Benefits of SPC

What are the Benefits of SPC

Properly used, control charts and SPC can: Distinguish special from the common causes of variation, as an aid to improvement in capability Enable the process perform consistently and predictably Provide a common language for discussing the performance of the process (capability indices) Be used by employees for on-going control of a process

41 Measurement System Analysis (MSA)

Measurement System Analysis (MSA)

As measurement data is often used to make decisions with regard to manufacturing (and test) activities then the quality of this data needs to be assured No measurement system is perfect (i.e. measures exactly with reference to known standards each time); some variation will be evident in all systems, including human influences A series of analytical techniques can be used to ensure that the inherent variation in measurement systems can be determined and the effects understood i.e. possibility for accepting bad parts and rejecting good parts In essence, we need to understand the variation and limitations of the measurement systems we are using to enable confidence in those results (for equipment on the control plan)

42 Measurement System Analysis

Measurement System Analysis

43 Variable Gauge R&R study

Variable Gauge R&R study

Gauge repeatability and reproducibility data sheet used for the numerical analysis of the study data (MSA software is also available). 10 parts used to represent variability of the process; 3 appraisers. Typically 3 trials per appraiser Complete the study using usual equipment and individuals (random presentation of parts to avoid influence on the results)

44 Gauge R&R

Gauge R&R

Extract from the AIAG MSA manual

45 Variable Gauge R&R study

Variable Gauge R&R study

The study estimates the variation and percentage of process variation for the measurement system (Gauge R&R) and its components - Repeatability - Reproducibility - Part to part variation (how representative the parts are; this will influence the results).

46 Gauge R&R

Gauge R&R

Acceptable Gauge R&R% results; Up to 10% - generally acceptable 10 to 30% - may be acceptable based on importance of measurement feature, cost of better equipment, cost of refurbishment/repair of equipment, OR the skill level of the appraisers Over 30% - would be considered un-acceptable and improvement is required Where results are not acceptable, check the data, calculations etc. to determine if there are any errors

47 Use of Graphical Techniques

Use of Graphical Techniques

There are many different methods for presenting data for analysis A picture paints a thousand words. The AIAG MSA manual strongly recommends the use of both calculated methods and graphical techniques. Other methods are available for specific situations and where more detail is required Analysis of Variance (ANOVA), gauge performance curves, regression analysis etc.

48 Attribute Studies

Attribute Studies

Go/No-go gauging systems (acceptance gauging, gap gauges etc.) A series of comparative techniques are available to evaluate the effectiveness of attribute gauging systems, again using several appraisers and trials

49 Product Part Approval Process (PPAP)

Product Part Approval Process (PPAP)

The intent of PPAP is to validate that products made from production tools/processes meet engineering requirements (specifications), that the processes are capable (Cpk, SPC data) and are capable of producing acceptable product consistently over time. The type and format of submission will depend on the customer requirements, but the AIAG PPAP manual has defined formats

50 PPAP

PPAP

To support this, appropriate data has to be completed and be made available for review by the customer; Part Submission Warrant (PSW), DFMEA, PFMEA, Control Plan, MSA data, initial process capability results, material certification, marked up drawing/ dimensional results, engineering change documents, material/performance test results, qualified laboratory documentation, appearance approval report (if applicable), sample product Approval may require full or partial submission of the information (invariably depending on supplier approval status) reviewed at the customer location or supplier site

51 PPAP

PPAP

Acceptance of the PPAP detail is key for several possible events; Authority to ship production parts Meeting customer timing requirements for the project Support the supplier approval rating (i.e. PSW submission on time) Trigger tooling payments to the supplier (tooling will typically be owned by the customer)

52 AUTOMOTIVE PROGRESS SINCE 1990

AUTOMOTIVE PROGRESS SINCE 1990

Best selling car in the UK 2012 (to date) - Ford Fiesta

ex. Zetec 1.2 - ?12495 OTR price 3 year warranty, plus breakdown cover sold in EU & USA

Airbags x2, side airbags, knee airbag, anti-whiplash head restraints, optional curtain airbags ABS, brake force distribution, stability control, traction assist, auto brake assist, auto hazard warning lights High strength steels, active seat belts, anti-submarine seats, Halogen projector head lights Immobiliser/alarm, deadlock doors Heated, electric remote door mirrors, auto wipers with rain sensor, alloy wheels Radio/CD,, AUX connection for phones, IPODs, A/C etc. 4 way adjustable front seats Electronic power assist steering, advanced engines up to 85 mpg possible with some models

53 Summary

Summary

In truth, many factors have influenced the improvement in product quality over the past 20 odd years, but the use of APQP and core tools have provided a focus on improved process capability and product quality/ reliability throughout the automotive supply chain. The aerospace industry are now utilizing many of these tools to improve supplier performance

54 Questions Thank you

Questions Thank you

AUTOMOTIVE CORE TOOLS; SPC, MSA, FMEA, APQPCONTROL PLAN CQI Wessex - 11 December 2012 John Skinner
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