Podcast
Questions and Answers
What does 'WPI' refer to in the context of coil measurement?
What does 'WPI' refer to in the context of coil measurement?
- Wires Per Inch
- Weaves Per Inch
- Width Per Inch
- Wraps Per Inch (correct)
What is the purpose of securing the wires on both ends of the sample with tape?
What is the purpose of securing the wires on both ends of the sample with tape?
- To make it easier to handle during vision system analysis.
- To mark the sample for identification.
- To prevent further coil expansion.
- To keep the wires from unraveling after being cut. (correct)
According to the document, what is the acceptable sample length range, unless otherwise specified?
According to the document, what is the acceptable sample length range, unless otherwise specified?
- 3-5 inches
- 5-7 inches
- 2-4 inches
- 4-6 inches (correct)
What material should be used to secure samples for braid/coil analysis, according to the document?
What material should be used to secure samples for braid/coil analysis, according to the document?
What does 'PPI' stand for in the context of braid measurement?
What does 'PPI' stand for in the context of braid measurement?
In the context of the document, what is a 'pic'?
In the context of the document, what is a 'pic'?
Which of the following is NOT a braid pattern type mentioned in the document?
Which of the following is NOT a braid pattern type mentioned in the document?
What is the primary purpose of using the vision system for samples?
What is the primary purpose of using the vision system for samples?
What is the primary purpose of the document?
What is the primary purpose of the document?
According to the document, what is a 'wrap'?
According to the document, what is a 'wrap'?
Which of the following is NOT listed as a reference document?
Which of the following is NOT listed as a reference document?
What materials can a 'filament' be made from, according to the document?
What materials can a 'filament' be made from, according to the document?
Which term describes an interlaced series of windings of wires or filaments?
Which term describes an interlaced series of windings of wires or filaments?
What should be done after identifying a transition?
What should be done after identifying a transition?
What is the responsibility of all individuals handling braided and coiled products?
What is the responsibility of all individuals handling braided and coiled products?
What is the main difference between a 'coil' and a 'braid'?
What is the main difference between a 'coil' and a 'braid'?
When rounding the pic/wrap rate, what should you do if you have covered slightly less than half of a wrap?
When rounding the pic/wrap rate, what should you do if you have covered slightly less than half of a wrap?
According to the document, where can visual inspection criteria be found?
According to the document, where can visual inspection criteria be found?
Which document would be MOST appropriate for specific customer requirements?
Which document would be MOST appropriate for specific customer requirements?
What action should be taken if a nonconformance is noted during inspection?
What action should be taken if a nonconformance is noted during inspection?
What is the purpose of document revision?
What is the purpose of document revision?
If you are measuring the pic/wrap rate and you've covered more than half of a current pic/wrap, how should you round?
If you are measuring the pic/wrap rate and you've covered more than half of a current pic/wrap, how should you round?
What should you do first when inspecting a sample?
What should you do first when inspecting a sample?
What was the update made with revision '1' on 11/03/15?
What was the update made with revision '1' on 11/03/15?
When measuring a braided product, what is the initial step after aligning the sample with the scope's horizontal axis?
When measuring a braided product, what is the initial step after aligning the sample with the scope's horizontal axis?
For measuring braided product, why is the microscope's X-axis zeroed?
For measuring braided product, why is the microscope's X-axis zeroed?
What action should be taken if the number of wraps or pics counted for a braided product does not exactly match the specification?
What action should be taken if the number of wraps or pics counted for a braided product does not exactly match the specification?
What does 'transition length' refer to when measuring variable pic products?
What does 'transition length' refer to when measuring variable pic products?
When measuring the transition of a variable pic product, how are distal and proximal ends established?
When measuring the transition of a variable pic product, how are distal and proximal ends established?
After visually identifying the transition on a variable pic product, what is the next step in measuring the transition point?
After visually identifying the transition on a variable pic product, what is the next step in measuring the transition point?
When measuring the pitch of a coiled product using a scope, where should the crosshairs initially be centered?
When measuring the pitch of a coiled product using a scope, where should the crosshairs initially be centered?
Why should multiple measurements of a variable pic product's transition be repeated?
Why should multiple measurements of a variable pic product's transition be repeated?
After zeroing the scope's X-axis when measuring pitch, what is the next step?
After zeroing the scope's X-axis when measuring pitch, what is the next step?
What should be done if extreme variation exists within the picks and wraps of a braided product?
What should be done if extreme variation exists within the picks and wraps of a braided product?
For braided product, where do you align the scope crosshairs to begin measuring pitch?
For braided product, where do you align the scope crosshairs to begin measuring pitch?
When measuring the pitch of a braided product, what should the user measure?
When measuring the pitch of a braided product, what should the user measure?
According to the inspection method, what must be done after measuring each pic or wrap width?
According to the inspection method, what must be done after measuring each pic or wrap width?
When measuring pic rate (7.3), what is the primary value being determined?
When measuring pic rate (7.3), what is the primary value being determined?
While measuring coiled products, where are the scope crosshairs initially aligned for measuring pic rate?
While measuring coiled products, where are the scope crosshairs initially aligned for measuring pic rate?
What is the relationship between the measurements for pitch and pic rate?
What is the relationship between the measurements for pitch and pic rate?
Flashcards
Coil
Coil
A continuous wire or filament wrapped in one direction around the product.
Wire
Wire
Metal in the form of a flexible thread or strand.
Filament
Filament
Strands made from non-metallic materials like polymers, fiberglass, composites, or natural fibers.
Wrap
Wrap
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Braid
Braid
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Left or Right Hand Coils
Left or Right Hand Coils
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Inspection Method
Inspection Method
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Document Purpose
Document Purpose
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Pic/Wrap Pitch
Pic/Wrap Pitch
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Pic/Wrap Rate
Pic/Wrap Rate
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Pitch Measurement
Pitch Measurement
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Pic Rate Measurement
Pic Rate Measurement
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Scope Crosshairs
Scope Crosshairs
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Pic/Wrap Tolerance
Pic/Wrap Tolerance
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Inspection Record
Inspection Record
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Figure 7 & 8
Figure 7 & 8
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Braid Density Measurement
Braid Density Measurement
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Aligning Braided Sample
Aligning Braided Sample
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Zeroing the X-Axis
Zeroing the X-Axis
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Counting Wraps/Pics
Counting Wraps/Pics
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Verification
Verification
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Transition Length
Transition Length
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Proximal & Distal Rates
Proximal & Distal Rates
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Repeat for Sections
Repeat for Sections
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What is a Braid Pattern?
What is a Braid Pattern?
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What is WPI?
What is WPI?
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What is PPI?
What is PPI?
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What is Pitch?
What is Pitch?
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What is a Pic?
What is a Pic?
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What is the purpose of the Inspection Method?
What is the purpose of the Inspection Method?
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How is a sample prepared for the braid/coil density inspection?
How is a sample prepared for the braid/coil density inspection?
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Why is the sample length important for the braid/coil density inspection?
Why is the sample length important for the braid/coil density inspection?
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Identifying the transition
Identifying the transition
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Measuring transition length
Measuring transition length
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Measuring pic/wrap rate
Measuring pic/wrap rate
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Rounding rules
Rounding rules
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Visual inspection criteria
Visual inspection criteria
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Control of Nonconforming Product
Control of Nonconforming Product
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Revision History
Revision History
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Verifying Braided and Coil Density
Verifying Braided and Coil Density
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Study Notes
Inspection Method - Verifying Braid and Coil Density
- Document Number: 3543
- Revision: 2
- Effective Date: 8/15/2023
- Purpose: To demonstrate inspecting braided or coiled products manufactured by Putnam Plastics Corporation.
- Scope: Applies to all braided and coiled products at Putnam Plastics Corporation.
- Responsibilities: All personnel handling braided/coiled products must understand and use the criteria.
Reference Documents and Forms
- In-Process and Final Inspection: Work instruction #1151
- Good Documentation Practices: #1029
- Incoming Inspection Procedure: #1156
- Control of Nonconforming Product: #1018
- Quality Inspection Plan: Specific product or customer documents
- Vision System Operation: #1866
- Quadra-Check 200 Vision System: #1881
Definitions
- Wire: Usually flexible metal thread or strand.
- Filament: Non-metallic strands (polymers, fiberglass, composites, or natural fibers).
- Coil: Continuous wire/filament wrapped in one direction.
- Wrap: A section of coil encompassing one rotation.
- Left/Right Hand: Winding direction; often specified for applications.
- Braid: Interlaced windings of wires/filament.
- Pattern: Braid configurations (multi-wire, full load, half load, or diamond).
- WPI: Wraps Per Inch (for coils).
- PPI: Pics Per Inch (for braids).
- Pitch: Measurement of individual wraps/pics.
- Pic: Intersecting wires in a braid.
Safety Precautions
- No specific safety precautions listed for this inspection procedure; follow general safety guidelines.
Process
- Sample Collection: Collect according to QIP, standard procedures, or customer specifications.
- Sample Preparation: Wrap sample with tape (tan masking tape initially, avoiding blue due to adhesion issues). Cut through tape on both ends.
- Sample Placement: Place on vision system stage for proper observation. Length should be 4-6 inches, unless specified otherwise.
Measuring Pic/Wrap Rates
- Pitch (Coiled): Align sample horizontally, zero the X-axis, and measure the distance to the next wrap edge on the sample. Repeat for desired number of wraps/pics.
- Pitch (Braided): Align sample horizontally, zero the X-axis, and measure distance to the next intersection of wires/filaments. Repeat for desired number of intersections.
- Pic Rate (Coiled/Braided): Align sample, zero X-axis, count complete wraps/pics per inch; round to nearest wrap/pic.
- Variable Pic/Wrap Rate: Identify transition lengths, measure pic/wrap rates for proximal/distal ends. (Identify start/end of pitch change).
- Rounding: Round down if less than half a wrap or pic over the measurement; up if more than half complete.
Additional Notes
- Visual inspection criteria are in product specifications or QIP.
- Nonconformances require rejection (Control of Nonconforming Product #1018).
- Refer to specific work instructions or engineers for additional questions.
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Description
This quiz assesses knowledge of the inspection methods used for braided and coiled products at Putnam Plastics Corporation. It covers the responsibilities of personnel, relevant documentation, and definitions related to the inspection process. Gain a deeper understanding of quality assurance for these specific products.