Intro to Additive Manufacturing 110

This class introduces the basic concepts of additive manufacturing (AM), and discusses the history and development of AM, as well as the future. In addition, the basic process of AM is outlined and the technologies and classfications of AM are explored.

CLASS DETAILS

Class Name:
Intro to Additive Manufacturing 110
Description:
This class introduces the basic concepts of additive manufacturing (AM), and discusses the history and development of AM, as well as the future. In addition, the basic process of AM is outlined and the technologies and classfications of AM are explored.
Version:
1.0
Difficulty:
Beginner
Number of Lessons:
15
Additional Language:
Spanish

Class Outline

  • Objectives
  • What is Additive Manufacturing?
  • The History of Additive Manufacturing
  • Industrial Use of Additive Manufacturing
  • The Basic Additive Manufacturing Process
  • Additive Manufacturing and CNC
  • Technologies Used in Additive Manufacturing: CAD
  • Technologies Used in Additive Manufacturing: Computers
  • STL Files
  • Additive Manufacturing Material Types
  • Additive Manufacturing Layer Construction Methods
  • Additive Manufacturing Processes
  • The Benefits of Additive Manufacturing
  • The Future of Additive Manufacturing
  • Summary

Objectives

  • Define additive manufacturing.
  • Explain the origin of additive manufacturing.
  • Describe how the use of additive manufacturing is changing manufacturing.
  • Describe the basic additive manufacturing process.
  • Differentiate between additive manufacturing and CNC manufacturing.
  • Describe the use of CAD in additive manufacturing.
  • Describe the use of computers in additive manufacturing.
  • Describe the use of STL files.
  • Describe the types of additive manufacturing materials.
  • Describe the different methods for layer construction.
  • Classify additive manufacturing processes.
  • Describe the benefits of additive manufacturing.
  • Describe the future of additive manufacturing.

Job Roles

Certifications

Glossary

Vocabulary Term Definition
1D channel An additive manufacturing layer construction method that uses a single point to draw over the surface of the part. These single points eventually form the lines that make up a layer.
1D channel array An additive manufacturing layer construction method that uses an entire line of separate application points that creates a whole line. These lines are then combined to create a whole layer, one line at a time.
2 x 1D channel An additive manufacturing layer construction method that uses two separate points to create individual lines simultaneously. These two lines eventually combine to form an entire layer.
2D channel An additive manufacturing layer construction method that creates an entire layer at once from many different points.
actuator A device that converts an electrical control signal into mechanical motion. In order for additive manufacturing to become feasible, computers needed to be able to control actuators.
additive manufacturing AM. The process of joining or solidifying materials to make an object based on a three-dimensional computer model. Additive manufacturing methods typically build up layers of material to create an object.
Additive Manufacturing File AMF. A newer file format for use in additive manufacturing. The AMF format allows for more complex shapes than the older STL format, including curved triangles.
AM Additive manufacturing. The process of joining or solidifying materials to make an object based on a three-dimensional computer model. Additive manufacturing methods typically build up layers of material to create an object.
American Society of Testing and Materials ASTM. An organization that writes and updates specifications for a broad range of materials, including metals. ASTM has created seven classifications for additive manufacturing processes.
AMF Additive Manufacturing File. A newer file format for use in additive manufacturing. The AMF format allows for more complex shapes than the older STL format, including curved triangles.
ASTM The American Society of Testing and Materials. An organization that writes and updates specifications for a broad range of materials, including metals. The ASTM has created seven classifications for additive manufacturing processes.
binder jetting An additive manufacturing process in which liquid is used to join powder materials.
CAD Computer Aided Design. A computer system used to design a model of a product. CAD models are converted into STL format for use by additive manufacturing machines.
CNC Computer numerical control. CNC is a combination of software and hardware that directs the operation of a machine. CNC machines are used for subtractive manufacturing.
composites A material made by combining a binding resin with small filaments of solid material. Composites are made by combining different types of manufacturing materials, including metal, plastic, or ceramic.
Computer Aided Design CAD. A computer system used to design a model of a product. CAD models are converted into STL format for use by additive manufacturing machines.
Computer Numerical Control CNC. A combination of software and hardware that directs the operation of a machine. CNC machines are used for subtractive manufacturing.
curing A process in a material is allowed to harden. Some additive manufacturing materials require extra heat or ultraviolet light to cure.
dimensions A measurement of space, especially length, width, and height. Additive manufacturing uses CAD models that are rendered in three dimensions.
directed energy deposition An additive manufacturing process in which thermal energy, often from a laser, is used to melt materials as they are deposited.
discrete particle Discrete particles are sand-like substances that can be combined to form solid objects. The powder materials used in additive manufacturing are discrete particles that are joined using heat, often from a laser, or an adhesive.
Ethernet A common local area network standard that is used in manufacturing settings and in offices. Ethernet connections are common on AM machines and can be used to connect the machine to multiple computers.
FDM Fused Deposition Modelling. An additive manufacturing process that builds objects by extruding layers of material. FDM usually uses thermoplastic materials.
fused deposition modeling FDM. An additive manufacturing process that builds objects by extruding layers of material. FDM usually uses thermoplastic materials.
laser A device that generates an intense beam of light that can be precisely aimed and controlled. Lasers are used to fuse together layers in various additive manufacturing processes.
liquid polymer A fluidic substance with a repeating molecular structure. In additive manufacturing, liquid polymers are solidified using lasers or ultraviolet light.
material extrusion An additive manufacturing process that uses a nozzle to dispense material, usually a thermoplastic filament, onto a support. One example of material extrusion is the FDM process.
material jetting An additive manufacturing process in which droplets of build material are selectively deposited.
molten material A solid material used in additive manufacturing that is heated to its melting point and then formed and solidified as it cools.
MRI Magnetic resonance imaging. A technique that uses a magnetic field and radio waves to create images of internal organs inside a person's body. In the future, MRI scans may be used to generate CAD designs for use in additive manufacturing.
networking The ability for two or more computers to connect and communicate with each other. Networking additionally allows computers to communicate with additive manufacturing machines.
polygons A closed shape consisting of line segments that has at least three sides. CAD models are made of flat polygons assembled into three dimensional models.
polymer A long chain of very large molecules made up of many atoms. Liquid polymers are often used in additive manufacturing.
powder bed fusion An additive manufacturing process that uses adhesives, heat, or light to bond areas in a container of powder plastic, metal, ceramic, or other material. Powder bed fusion may use a variety of different channel configurations.
prototype A preliminary model of a product used for evaluation of performance of a design. Final versions of the product are developed based on prototypes.
rapid prototyping A method of manufacturing a small number of prototype parts before developing a finished product using more traditional manufacturing methods.
sheet lamination An additive manufacturing process that forms an object by bonding sheets of material together using an adhesive, heat, and pressure.
solid sheet system A material system that uses solid sheets of paper or plastic. In additive manufacturing, solid sheet material systems use individual sheets for each layer that are cut into shape and then fused to other layers.
stereolithography An early additive manufacturing technique that used a computer-controlled laser to build a product layer by layer. The STL file format is named after stereolithography.
STL The file format used by additive manufacturing machines. The STL name is short for stereo lithography, an early additive manufacturing process but is also short for Standard Tessellation Language.
subtractive manufacturing Any processes in which a piece of raw material is machined into a desired final shape and size by a controlled material-removal process. Subtractive manufacturing is another name for traditional machining processes.
support material Additional material used in the additive manufacturing process to support the product as it is being constructed. Support material is removed from the AM product as part of the additive manufacturing process.
ultraviolet light UV. Light not visible to the naked eye because it consists of wavelengths shorter than those of visible light. Some additive manufacturing systems use UV light to bond or cure materials.
vat photopolymerization An additive manufacturing process in which a liquid is selectively cured using light. Stereolithography is an example of vat photopolymerization.