Quality Control And Assurance Flashcards
What is quality control?
-the maintaining, checking and testing of products and products through out products to ensure they meet correct tolerances
What is quality assurance?
-procedures and and policies put in place to ensure products are manufactured correctly to the correct tolerances
What is total quality management TQM?
-this is where companies recognise that people make mistakes, but only when conditions allow this to happen
-So from this accompany will use all of the workers in the organisation to put ideas and observations in place to make mistakes less likely to happen
-So it is a system based upon that, every member of staff must be committed to maintaining high standards of work
What is scrum?
-scrum is used to manage complex product development and aims to be initiative.
-Scrum refers to an agile team collaboration framework, and consists of three types of worker: product, owners, developers, scrum master.
What is six sigma?
Six Sigma is a quality-control methodology that businesses use to significantly reduce defects and improve processes
-by stopping manufacturing defects from occurrence by getting processes to the point where they produce stable and predictable results
-it does it through identifying cause of the defect, and then reducing this in the processes.
How is waste reduced in manufacture?
-closed loop systems
-re using materials
-produce more accurate results through use of jigs, so less products are having to go to waste in the first place
-try and use little energy and low energy equipment
-reducing the amount of materials actually used to make product or packaging in the first place
-how can you ensure that parts are made accurately within tolerance?
-The use of jigs
-The use of Go no go gauges
-The use of templates
-The use of CAD and cam equipment to reduce human error and manufacture all product products to be the same
-what are Go no go gauges?
-used to check parts are in tolerance, if the product fits into the Gage perfectly then it should be in the correct tolerance
What is laser/ probe scanning?
Laser scanner output creates a three-dimensional model of a surface, in order to determine something about the physical characteristics of an object, or to identify any defects with with the outer surface of a product
-give examples of how nondestructive methods of testing be used?
-X-rays and ultrasound can be used to check manufactured objects for defects such as cracks, other flaws
Eg, looks for cracks in a pipe
-x-rays ultrasound can quickly produce a 3-D image of parts as they move along an x-ray or Ultrasound to compare dimensions and surface Finish to check that is within Torrance.
What are veneer calipers?
-a measuring device that is used for the measurement of linear dimensions
-a veneer caliper can be adjusted to measure the distance between something. The Veneer callipers will be adjusted, and this can be compared to a scale of measurement on the side to identify how far apart two components are.
-what is a micrometre?
measurement of very small objects. They allow for the highly precise measurement of any item that fits between the anvil and spindle, identifying the size of very small objects
What are jigs?
-They serve as a template for repetitive tasks in measuring, cutting, drilling or can be used to hold a cutting tool in place or guide it as it performs a repetitive task like drilling or tapping holes
-What are the strengths of using jigs?
-used to reduce applied labor time and improve ergonomics and quality.
-faster then drawing out by hand
-makes sure if lots if components are being produced that they are all the same.
-accuracy is improved as human error is reduced
-what are the weaknesses of using jigs?
-high initial set up cost for jigs
