To check Engineering Drawing you need to learn how to draw it, right?
Sources of information regarding Engineering DWGs:
Drawing Guidance & Checklist
Guidance:
1.????Use this steps to ensure completeness of your DWGs.
2.????Remember that your DWG should be easy to understand
3.????Specify everything that needs to make or assemble
4.????If you think something may be ambiguous, add additional details and/or notes for clarity.
Designer quationario:
? Have I given the machinist everything they need to make this part?
? Is this drawing clear?
DWG checklist:
? Views are arranged in the correct (first/third-angle) orientation
? Hidden lines are shown except where they obscure the view
? Tangent lines are omitted unless needed for clarity
? All features of the part are shown in true size in at least one view
? Location and size given for all features
? Features are fully-defined but not over-defined
? Critical dimensions are toleranced
? Non-critical features provided with looser tolerances
? Dimension and tolerance precisions match
? Precision of non-toleranced (i.e. using title block tolerance) dimensions are chosen appropriately
? A tolerance stack has been performed to ensure that all tolerances selected are appropriate
? Dimensioning to hidden lines is avoided
? Center lines/marks added for revolved and symmetrical features
? No dimension lines are crossing
? Dimensions are placed outside the view
? Quantity (i.e. 6X) noted for patterns of features and comes at first
? Use of TYP is unambiguous
? Reference dimensions provided where needed or requested (i.e. overall dimensions)
? Diameter symbols added to cylindrical bosses, holes, and arcs greater than 180 degrees
? Radius symbol added to fillets, rounds, and arcs less than 180 degrees
? Material (alloy, heat treat, and specification) noted on drawing or referenced in BOM
? Coatings noted on drawing or referenced in BOM
? Location for coating masking (if any) noted
? Critical finishes noted
? Notes indicating non-obvious critical/sealing surfaces that must be free of scratches
? Basic edge break requirements are conveyed with a note instead of dimensions on the face of the drawing.
? Marking instructions and location provided if required
? Geometric dimensioning and tolerancing applied where needed
? Basic dimensions are used where needed
YouTube Videos:
Technical Drawing Tutorial - Prepare a Perfect Mechanical Drawing for Machinists
https://www.youtube.com/watch?v=Nn-JuuWsW0s
Understanding Engineering Drawings
Engineering Drawings: How to Make Prints a Machinist Will Love
Understanding GD&T
Website with other CNC information:
Technical Drawings & GD&T
https://cqeacademy.com/cqe-body-of-knowledge/product-process-design/technical-drawings-gdt/
Free AutoCAD course on Autodesk (https://www.autodesk.com/)
Paris' site operational leader
1 年If you can , the most important is also to learn the manufacturing process. Drawings and process are linked.. I saw a lot of problems. In 3d all is fitting and possible. In reality not at all. Unfortunately development teams are not trained enough on that. This is causing a lot of problems for the purchasing and quality team.
Trainer | Aerostructure Researcher | Drone Hobbyist
1 年Thanks for sharing info
Mechanical Design Engineer at UAE DEFENCES DESIGN [Aero-Mechanical UAV design development R & D, Prototype 3D in Creo, SOLIDWORKS, Catia,Nx, 3D layout, Manufacturing, 3DP](MSC UK Distinction?? Lean Six Sigma Green Belt)
1 年no GD and t
Airworthiness Inspector en DGAC Peru
1 年Thank you Serguey for sharing this important reference info. Best Regards !!
Talks about???: #Fasteners?? #Aviation?? #Leadership? #Process-Automation?? #Socialmedia?? #Personalgrowth?? #AI-Tools?? #Artificial intelligence in our Daily life??#Marketing?? #Kindness??
1 年Thanks for sharing Sergey, much appreciated!