Untitled

Quality control

Quality of

Design

Confirmation

basically refers to the degree to which the product or service meets established quality standards or norms

focuses on the way things are done; with the right materials, machinery and equipment in good condition, trained and motivated personnel, etc.

It is the ability to make a design that fits correctly to the needs of the client

refers to the degree of compliance with the technical specifications, the ability to create the designed product

set of tools, actions or mechanisms that aim to identify possible errors in the different processes of the company,

Definition of Quality Control.

Evolution of Quality Control

when the need arises from offering products with superior attributes to achieve higher sales and self-control begins as the beginning of an uninterrupted evolutionary process to this day.

In the small workshops of the artisans, it was they themselves who conceived and controlled the quality of what they produced.

These processes, although they constituted progress at the time, yielded losses as a result of defective production since only the results at the end of the production sequence were analyzed.

Development of a Product.

it is a six-stage plan that involves taking a product from its initial conception and taking it to market launch.

The development of a new product presents a great challenge. From ideation, through research and prototyping, no release is exactly the same.

What is a Quality Control System

It is a tool that allows any organization to plan, execute and control the activities necessary for the development

through the provision of services with high quality standards, which are measured through user satisfaction indicators.

Quality Control Tasks

strict compliance with the standards for the production process, before and during the activity.

Check and examine samples of a product

Control automated systems.

inspect production and procedures

Examine the products purchased by the company

Prepare the quality control plan detailing the size of the samples

The Cost of Quality.

The cost of quality is the value of implementing, executing and maintaining a Quality Management System

We can subdivide the elements that make up the cost of quality into four groups

Prevention Cost

Evaluation Cost

cost of internal and external failures

Cost of education and training

Quality Circles.

The quality circles are known as the result that exists between the interaction between the American statistical method of Quality Control

e organizan dentro de un departamento de trabajo con el fin de poder estudiar y minimizar los problemas que se encuentran relacionados con la producción.

They are problem-solving teams that use simple statistical methods with which to investigate and decide on the solutions to problems.

Inspection classification.

The inspection process is that process that consists of verifying all the units of a lot.

Sampling inspection

Inspection by attributes

Inspection by variables

Classification of Defects.

AQL standards have 3 types of defects: minor, major and critical

A Minor Defect is a discrepancy from standards, but does not affect the usability of the product

A Major Defect is one that causes the product to not function for the purpose for which it was produced.

A Critical Defect is one that is considered dangerous or unsafe.

Quality Quantification.

It is the way to determine to what extent resources are used for tasks, activities and processes aimed at achieving quality.

Measuring the cost of quality is the way to determine the extent to which resources are used for tasks,

Carrying out this measurement involves considering different spending factors.

Fundamental Concepts in Sampling for Acceptance.

Acceptance sampling is the inspection by samples in which the decision is made to accept or not a product

The determination to accept or reject the batch is often referred to as the batch statement.

The purpose of acceptance sampling is to judge lots, not to estimate their quality

Acceptance sampling plans do not provide any direct form of quality control.

Simple, Double and Multiple Sampling Plans.

Double Sampling It is a system in which a first sample of a smaller size than that which would be necessary in simple sampling is taken and if the quality found is good enough or bad enough, the lot is directly accepted or rejected.

The plan is executed by randomly taking units of product from the lot until the sample size is completed.

The sample is inspected and the number of defective units is counted. If this number is less than or equal to the acceptance number, the whole lot is accepted, if the number of defectives is greater than or equal to the rejection number.

Quality Philosophies

The Philosophy of Joseph M. Juran

The philosophy of Kaoru Ishikawa

The Philosophy of Philip B. Crosby

E. Deming.