Table of Contents
Assembly Drawings must have a number of views to show how parts fit together. Parts list (or BOM – Bill of Materials) relates to balloon numbers on drawing.
What does an assembly drawing include?
Assembly drawing Assembly drawings can be used to represent items that consist of more than one component. Assembly drawings may include instructions, lists of the component parts, reference numbers, references to detail drawings or shop drawings, and specification information.
Do assembly drawings have dimensions?
Generally, the only dimensions shown on assembly and subassembly drawings are those needed to assemble the parts, standard components, and subassemblies. Thus, dimensions needed solely to fabricate a part should not be shown on assembly or subassembly drawings.
What is the difference between a detail drawing and a assembly drawing?
Detail drawings provide detail descriptions of a part for construction or fabrication, whereas assembly drawings emphasis how the part is to be used. Assembly drawings show the parts together in assembly.
What scale are assembly drawings?
A room plan at 1:50. A component drawing at 1:5. An assembly drawing at 1:2.
What is an engineering assembly?
the act of assembling or the state of being assembled. 3. ( Mechanical Engineering) the process of putting together a number of parts to make a machine or other product. 4. ( Mechanical Engineering) machinery a group of mating components before or after fitting together.
What is assembly diagram?
When we refer to “assembly diagrams”, we are referring to annotated (labelled) pictures that explain in detail how we must assemble an item. It is vital to ensure that you know what each symbol in the assembly instructions mean. Some symbols you might see include: Scissors.
What are detail drawings?
Definition of detail drawing : a separate large-scale drawing of a small part of a machine or structure especially : working drawing.
How do you dimension an assembly drawing?
You must have the assembly from which a drawing was created in session in order for the dimensions to appear for modification. On the Annotate tab, click Show Model Annotations. The Show Model Annotations dialog box opens. Click . Select type of dimension in the Type list.
What is a sub assembly drawing?
An assembly drawing shows how each part of a design is put together. If the design depicted is only part of the total assembly, it is referred to as a subassembly. Assembly may consist both of individual original & standard components and of subassemblies of the 1st level.
Does assembly drawing need more views?
A general assembly drawing should include a part list with quantities, one or more views of the product and its components, and necessary dimensions.
Why are drawings numbered Why is this numbering so important?
Drawing numbers should be given in all memoranda whenever drawings are transmitted. The drawing numbers are a positive means of identification, and they minimize potential difficulties if drawings become detached from the transmittal memoranda.
Do you need front top and side views in an assembly drawing?
Do assembly drawings need a FRONT, TOP and RIGHT SIDE view? Sometimes. We need as many views as it takes to identify and locate each part. It may only take one view.
What is an engineering drawing scale?
An engineer’s scale is a tool for measuring distances and transferring measurements at a fixed ratio of length. It is used in making engineering drawings, commonly called blueprints, blue lines, or plans on a specific scale.
What is an assembly in construction?
Definition. The name of a construction assembly that describes a roof, wall, or floor assembly. The name generally needs to be unique so it can be referenced precisely by surfaces. Units.
How do you design an assembly?
Keep the Assembly Line Happy: 10 Design for Assembly Rules to Minimize Part Count. Look for ways to combine parts. Build in Fasteners. Use COTS Parts. Use the Same Parts Throughout the Design and Product Family. Use Modular Designs. Make Connections Unique. Give Parts Clear Orientation. Make Parts Easy to Manipulate.
What are assembly methods?
[ə′sem·blē ‚meth·əd] (industrial engineering) The technique used to assemble a manufactured product, such as hand assembly, progressive line assembly, and automatic assembly.
What is an assembly view?
Assembly Views are collections of individual drawings. Often a single drawing does not contain all of the information necessary to convey the intended design. Assembly Views simplify this process by creating a hierarchy collection of the individual drawings needed using the latest drawing revision.
How assembly and detail drawings are important in manufacturing?
For the production of the component study of detail and assembly drawing is very important. When we need a particular component or object we give some specification and which describe its shape, size and dimensions. According to these dimensions, the designer or producer can understand and/or manufacture it.
What must an engineering detail drawing include?
The following information should be present on a detail drawing: engineer’s name. part name. material type. drawing scale. date and/or revision. necessary views (front, left side, right side, top, bottom, and/or back) isometric view. all necessary dimensions (width, depth, height, size, etc.).
What is the difference between assembly and sub assembly?
However, an assembly drawing is of a discrete product, such as a pneumatic bollard. A subassembly is an assembly of parts, such as those in an internal combustion engine, which are destined to be part of a much larger assembly, such as a passenger vehicle.
What is sub assemblies and components?
Sub-Assembly is the process that combines or builds components into component assemblies for inclusion in larger end items. It is the combining of components to create a new parent that requires assembly. This is a manufacturing process in and of itself.
What is find number in an assembly drawing?
Find numbers are a feature of the very first BOMs, a simple method to individually distinguish BOM lines in order to explicitly identify or “find” the corresponding callout and depiction on an engineering drawing. In other words, find numbers are a BOM index.
Who uses assembly drawings?
Assembly drawings are made for machineries, devices, units and products. They can also be a part of Mechanical Drafting Services helping to assemble a complex part of a mechanism or simply to amass a kit like in the case of furniture. An assembly drawing should meet the below three requirements: Maintenance requirement.
