All About Engineering

Manufacturing Engineering

Senaka B

one year ago

Ballistic particle manufacturing (BPM)

Ballistic particle manufacturing (BPM)

  • The BPM personal modeler came with all hardware and software enclosed in one compact unit.

  • The BPM is controlled by a DOS based 486 powered PC which is housed within the unit.

  • The BPM utilized ink jet or droplet based manufacturing techniques, where it builds the models by firing micro-droplets of molten wax material from a moving nozzle or jet onto a stationary platform, the platform then lowers and the process is repeated for each layer of the model.

  • The part is built as a hollow shell.

  • The parts can be scaled, rotated, or translated to a desired orientation. This is performed on a 5 axis workstation

  • BPM parts are not intended to be finished, however they may be painted.

BPM Process

BPM employs a technology called digital Microsynthesis.

1.) In the first step of the process, molten plastic is fed to a piezoelectic jetting mechanism, almost like those of inkjet printers.

2.) Next a multi-axis controlled NC (Numerical Control) system shoots tiny droplets of material onto the target, using the jetting mechanism.

3.) Last, small droplets freeze upon contact with the surface, forming the surface particle by particle.

BPM Advantages

Requires minimal post-processing.

Low toxicity.

Minimal power consumption.

Low cost of cost and materials.

Ability to perform in microgravity and vacuum environments.

BPM has no size constraints.

The process allows use of virtually any thermoplastic. Because of this, there are no heath hazards involved.