Week 14 challenge

AIM-

Assemble and apply GD&T to the butterfly valve assembly drawing

INTRODUCTION

GD&T stands for Geometric Dimensioning and Tolerancing. It is a standardized way of communicating information about a product and it is applied to engineering drawings with the set of geometric symbols and annotations following the standards. GD&T is an important skill to understand In the manufacturing industry. It is like a language that helps to understand a product between design engineers, manufacturers, and quality inspectors. Any product is first designed by a design engineer, manufactured by a manufacturer, and inspected by an inspector of the metrology department. For this process to work, all the professionals in this process must communicate effectively and efficiently in every step of the process to reduce the failure of parts and increase the accuracy. A CAD is perfect but there is no such manufacturing method that fracturing I can replicate the exact CAD file into the physical world with perfection. This may lead to failure or disqualification of many parts during the inspection. To meet the design intent of the design engineer and make the process of manufacturing and inspection faster, proper communication is required. A CAD is perfect but the reality is not, which is why need to define how far and in what ways our physical product can vary from the CAD model. GD&T is, therefore, applied to every engineering drawing before it goes to a manufacturer. Trying to get the perfect result or very tight tolerance increases the cost, so it is discussed with the customers how much tolerance to provide for the parts.

BUTTERFLY VALVE-

A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a shaft. When the valve is closed, the disc is turned so that it completely blocks off the passageway.When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.There are different kinds of butterfly valves, each adapted for different pressures and different usage.

DESIGN METHODOLOGY-

FIRST ALL THE PARTS ARE SEERATELY MADE AND THEN ASSEMBLED IN ASEEMBLY WORKBENCH.

FEATURES USED-

• SKETCH
• EXTRUDE
• HOLE
• PATTERN
• DATUM PLANES
• UNITE

DIFFERENT PARTS OF BUTTERFLY VALVE-

• BODY OF BUTTERFLY VALVE
• SHAFT
• DISK PLATE
• RETAINER
• LEVER
• NUT

ASSEMBLY OF BUTTERFLY VALVE-

DIFFERENT VIEWS-

GD AND T

CONCLUSION- THUS BUTTERFLY VALVE IS DESIGNED, ASSEMBLED AND GD AND T IS APPLIED TO IT.