ballastic particle manufacturing

8/4/2019 Ballastic Particle Manufacturing

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BALLISTIC PARTICLEBALLISTIC PARTICLE

MANUFACTURING (BPM)MANUFACTURING (BPM)


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BPM HistoryBPM History

BPM was invented by Bill Masters. BPM was patentedBPM was invented by Bill Masters. BPM was patentedin 1987, and in 1988, Masters founded Perceptionsin 1987, and in 1988, Masters founded PerceptionsSystems Inc.Systems Inc.

In 1992 their name was changed to BPM TechnologyIn 1992 their name was changed to BPM TechnologyInc.Inc.

The company collapsed in 1997 but their patent stillThe company collapsed in 1997 but their patent stillheld.held.


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BPM History Cont.BPM History Cont.

The first BPM machine was represented as a compactThe first BPM machine was represented as a compact

office modeler.office modeler.

BPM manufacturings role in the rapid prototypeBPM manufacturings role in the rapid prototype

environment was as one of the pioneers of ink jetenvironment was as one of the pioneers of ink jet

based office friendly systems which several vendorsbased office friendly systems which several vendors

supply to the market.supply to the market.


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BPM HistoryBPM History

Bill Masters first described BPM as a spitBill Masters first described BPM as a spit

wad. When you shoot a lot of wads,wad. When you shoot a lot of wads,

he said, they begin to take shape, andhe said, they begin to take shape, andif you can control the direction of theif you can control the direction of the

wads and the motion of the devicewads and the motion of the device

that's shooting them, you can producethat's shooting them, you can produceany desired shape.any desired shape.


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BPM TechnologyBPM Technology

The BPM personal modeler came with all hardwareThe BPM personal modeler came with all hardware

and software enclosed in one compact unit.and software enclosed in one compact unit.

The BPM is controlled by a DOS based 486 poweredThe BPM is controlled by a DOS based 486 powered

PC which is housed within the unit.PC which is housed within the unit.

The BPM utilized ink jet or droplet basedThe BPM utilized ink jet or droplet based

manufacturing techniques, where it builds the modelsmanufacturing techniques, where it builds the models

by firing micro-droplets of molten wax material from aby firing micro-droplets of molten wax material from a

moving nozzle or jet onto a stationary platform, themoving nozzle or jet onto a stationary platform, theplatform then lowers and the process is repeated forplatform then lowers and the process is repeated for

each layer of the model.each layer of the model.


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BPM Technology Cont.BPM Technology Cont.

The part is built as a hollow shell.The part is built as a hollow shell.

The parts can be scaled, rotated, or translated to aThe parts can be scaled, rotated, or translated to a

desired orientation. This is performed on a 5 axisdesired orientation. This is performed on a 5 axis

workstationworkstation

BPM parts are not intended to be finished, howeverBPM parts are not intended to be finished, however

they may be painted.they may be painted.


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BPM employs a technology called digitalBPM employs a technology called digitalMicrosynthesis.Microsynthesis.

1.) In the first step of the process, molten1.) In the first step of the process, moltenplastic is fed to a piezoelectic jettingplastic is fed to a piezoelectic jettingmechanism, almost like those of inkjetmechanism, almost like those of inkjetprinters.printers.

2.) Next a multi-axis controlled NC (Numerical2.) Next a multi-axis controlled NC (NumericalControl) system shoots tiny droplets ofControl) system shoots tiny droplets ofmaterial onto the target, using the jettingmaterial onto the target, using the jettingmechanism.mechanism.

BPM ProcessBPM Process


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3.) Last, small droplets freeze upon3.) Last, small droplets freeze upon

contact with the surface, forming thecontact with the surface, forming the

surface particle by particle.surface particle by particle.

BPM Process Cont.BPM Process Cont.


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BPM UsesBPM Uses

BPM parts are mainly used for concept visualization.BPM parts are mainly used for concept visualization.

Due to the weakness of the material, the parts arentDue to the weakness of the material, the parts arent

well equipped for use as functional components.well equipped for use as functional components.

BPM parts are useful during the design process.BPM parts are useful during the design process.


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BPM AdvantagesBPM Advantages

Requires minimal post-processing.Requires minimal post-processing.

Low toxicity.Low toxicity.

Minimal power consumption.Minimal power consumption. Low cost of cost and materials.Low cost of cost and materials.

Ability to perform in microgravity and vacuumAbility to perform in microgravity and vacuum

environments.environments.

BPM has no size constraints.BPM has no size constraints. The process allows use of virtually any thermoplastic.The process allows use of virtually any thermoplastic.

Because of this, there are no heath hazards involved.Because of this, there are no heath hazards involved.


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BPM DisadvantagesBPM Disadvantages

Parts produced lack strength andParts produced lack strength and

durability.durability.


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The Future of BPMThe Future of BPM

Incremental Fabrication TechnologiesIncremental Fabrication Technologies

- Developed system similar to BPMs- Developed system similar to BPMs

- System focuses on metal materials rather than- System focuses on metal materials rather than

plasticplastic

- There have been successful fabrications out of tin- There have been successful fabrications out of tin

and aluminumand aluminum

- Major advantage of this product is the ability to- Major advantage of this product is the ability to

produce large metal partsproduce large metal parts


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Texas Instruments:Texas Instruments:

-- Printed Computer TomographyPrinted Computer Tomography- Major advantage is PCT has a building speed of one layer per- Major advantage is PCT has a building speed of one layer perminute.minute.

US Navy:US Navy:

-- Electrosetting also called programmable moldingElectrosetting also called programmable molding- Technology uses electric fields to shape objects.- Technology uses electric fields to shape objects.

- System consists of a computer, electrode printer, and high- System consists of a computer, electrode printer, and highvoltage power supply.voltage power supply.

- Major advantage of Electro setting is the ability to electically- Major advantage of Electro setting is the ability to electicallypredetermine the material properties.predetermine the material properties.



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US Navy:US Navy:

-- Electrosetting also called programmable moldingElectrosetting also called programmable molding- Technology uses electric fields to shape objects.- Technology uses electric fields to shape objects.

- System consists of a computer, electrode printer,- System consists of a computer, electrode printer,

and high voltage power supply.and high voltage power supply.

- Major advantage of Electro setting is the ability to- Major advantage of Electro setting is the ability to

electrically predetermine the material properties.electrically predetermine the material properties.

- Using this technology, one can program density,- Using this technology, one can program density,

compressibility, hardness, and adhesion.compressibility, hardness, and adhesion.



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AcknowledgementsAcknowledgements

Rapid Prototyping TechnologyRapid Prototyping Technology

Kenneth G. CooperKenneth G. Cooper

http://ime.ucla.eduhttp://ime.ucla.edu

http://memdrexel.eduhttp://memdrexel.edu

http://eov.gvsu.eduhttp://eov.gvsu.edu
http://ime.ucla.edu/http://ime.ucla.edu/http://ime.ucla.edu/http://ime.ucla.edu/

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