Information About Laser Sintering Rapid Prototype Service

It's not a great secret that SLP was started as SLS since 1999. To the best of our knowledge, the owerview of this major rapid prototype manufacturing method went very well. We can securely suppose that a few years later, several laser sintering rapid prototype machines are producing plastic parts of a constantly growing size and for an ever-growing range of applications.

You should also keep in mind that selective laser sintering can be applied in every step of the product development cycle, from the fabrication of one-shot prototyps to functional test parts and small manufacturing series.

Actually, laser sintering is proper for larger amounts of components, even for group of 50 to 100 pieces and more. It is critical to note that laser sintering is also a method by which parts are built layer by layer. In addition, the main material contain of powder with element sizes in the order of magnitude of 50 μm. If we are making a deeper analysis of this problem, successive powder layers are spread on top of each other. Afterwards, after deposition, a PC controlled CO2 laser ray scans the surface and selectively binds together the pulverize particles of the corresponding cross sector of the creation.

It is very important to take into account that for the period of laser contact, the powder temperature rises above the glass transition point after which adjacent particles flow together and this procedure is named sintering.

As far as my private practice can be taken into account, SLS is the perfect solution for such types as fully functional models with mechanical properties analogous to those of injection molded parts or series of small components as a cost-effective alternative to injection molding or great and complex functional parts up to 700×380x580 mm in one piece or even for the design of complex, exclusive, personalized designs built as once-only products or in small batches. If you think to use laser sintering, you wouldn't be unhappy as this method is fast, inexpensive, it produces durable and practical, as well as large and complex parts. Also, it is possible to complete direct production of small quantity projects and there is a design liberty as well as a wide range of final degrees.

As a matter of truth, this method may deal with several types of materials. Along with the most accepted is polyamide. Undoubtedly you have to pay serious attention to the fact that being a solid material, the powder has the attractive function of being self-supporting for the generated product sections – this makes supports redundant. There is also a need to mention that the polyamide material permit the fabrication of fully functional rapid prototype with high mechanical and thermal resistance.

The other material is glass-filled polyamide. The thing is that the use of polyamide powder filled with glass particles (has a much higher thermal resistance and is normally applied in functional tests with aggresive thermal loads. And, finally, alumide is also commonly used. As far as this issue is concerned, alumide is a blend of aluminium powders and PA powder, which permit non-porous, metallic-looking components to be machined incomplex and is resistant to aggresive temperatures.

Rapid Prototype Models From 3D to Plastic in Less Than an Hour

Permit me ask you: what would you think if you hear that you will generate a part on a PC and then you will hold and evaluate that half 45 minutes later? As a matter of reality, it's not just my imagination – it's a reality! What would are unbelievable several years ago is now well established technology due to three-dimensional rapid prototype printers build it possible.

You need additionally to stay in mind that there is a method of creating prototypes involved 1st creating 2-dimensional drawings of a half and then taking those drawings to a model maker to form the prototype. This plays a important role, the model maker would initial have to correctly interpret the drawings, and then a process for making the prototype was identified. To the best of our data, once the half was created, the engineer ought to examine and live the part carefully to create certain that it fell inside the specifications on the drawings. We have a tendency to have every reason to believe that if it did not pass inspection, the half would wish to be modified or scrapped and the entire method would begin everywhere again.

However currently there's an alternative to the current method: imagine taking the same part that took days or perhaps weeks to make and having it in your hand in 45 minutes. The process is kind of incomplex: a part is made digitally on a pc using 3D modeling software. As way as it's ready, the file is then saved in a common format and sent to a 3D printer. The other useful thing to feature is that the printer builds the half one skinny section at a time from the bottom up putting water soluble supports in where necessary.

Really, it takes from 20 minutes to many hours to complete relying on the scale and difficulty of the part. What's more important, the part is off from the printer, placed in a very detergent solution to dissolve the supports, rinsed, dried, and is back in the engineer's hands on the identical day. In addition, it should be additionally said that the dimensional accuracy of the part is in fractions of a millimeter, thus most elements do not require further measurement and verification.

It's no nice surprise that it virtually sounds too good to be true. Not to mention, these printers have become relatively cheap in recent years, and whereas there are still some expensive models, of course, there are very useful 3D printers that are relevantly not expensive.

Therefore, to form long story short, the process of making the rapid prototype doesn't take long as to the time, material, and labor savings and your money would be paid off terribly fast. To sum up, 3D printers are by way one among the most intriguing components of digital rapid prototype, and the printer build the part one layer at a time quietly.

Rapid Prototype Manufacturing Review

Tapping into the growth means working at space-age speed, making prototypes of connectors or other wiring harness parts with a computer-guided rapid prototype machine that lays down thin layers of plastic or rubber over numerous passes, like an ink-jet printer producing a photo.

Automakers aren't quite ready to start making Jetson-type flying bubbles, but they are cramming today's vehicles with electric motors to power wheels, sensors to deploy airbags and entertainment devices to allow adults to survive a cross-country trip with children.

Connecting the electronic gadgets are as many as 2 1/2 miles of electrical wiring that, along with 600 plastic connectors and as many as 2,000 wire terminals, all weighing as much as 132 pounds - much of it coming from Delphi Packard Electric's Customer Technical Center in Champion.

''Demand will grow like crazy as we go to electric motors. That will drive the need for more connectors and wiring from Delphi. We want to be a part of that growth,'' Chris Burns, director of global innovation for Delphi Corp.'s Electrical/Electronic Architecture division, said last week.

So do Delphi Packard's hourly production workers. Tom Krolopp, shop chairman of International Union of Electrical Workers-Communications Workers of America Local 717, said the tech center provides more work for his 665 members, who make plastic connectors, metal terminals and electrical cable used to assemble wiring harnesses.

''Look at the projects for all-electric cars. They need a lot of wiring and plastics,'' he said.

Since the auto supplier's exit last October after four grueling years in Chapter 11 bankruptcy, Delphi Packard is counting on its patent-producing corp of engineers at Champion and five other tech centers worldwide to keep it in the forefront of an auto industry that's moving away from strictly oil-based fuel to hybrid or total electrical power.

''We can turn ideas into parts you can hold in your hand in hours,'' said Jerry Rinehart, supervisor of the rapid prototyping and CT scanning department.

It means developing thinner, lighter wiring, allowing automakers to fit harnesses into smaller vehicles, boosting fuel efficiency while still stocking them with navigational systems, computer ports and other electronic content that customers are demanding.

The division became one of 28 finalists worldwide for the prestigious 2010 PACE award for its environmentally friendly ultra-thin wiring wrapped in halogen-free coating that makes it recyclable, thus keeping it out of landfills.

The 0.13 millimeter-squared, or 26 gage, wire is the thinnest that can still be plugged by hand into connectors. Thinner wires require a special machine that Delphi Packard also has developed to make the connection.

About 200 engineers, technicians and other workers at the center on Research Parkway N.W. are welcoming the challenges.

''We're tireless here in trying to stay in the forefront of technology. We want to become the technology leader'' in automotive electrical and electronic architecture, Senior Project Engineer Bob McFall said as he showed off the center's process lab, a factory-like setting where engineers run through a complete manufacturing process, from cutting electrical cable to length to producing the final harness as fast as a 1 1/2 days.

''We don't have the traditional lead time; that's what drove Delphi to invest in this area,'' Burns said.

The lab also gives Delphi tools worldwide to develop cutting-edge wiring and sensor systems for future hybrid gasoline-electric and all-electric vehicles.

Delphi engineers have been working alongside their Chinese counterparts in Champion on prototypes of 10 wiring sets for an all-electric vehicle for CODA Automotive of Santa Monica, Calif.

The sedan, which will be built in China for sale in California later this year, is projected to have a range of 90 to 120 miles. Delphi will supply key electronic and high-voltage parts, along with a multiservice antenna.

With its six technology centers -Champion and the Wuppertal, Germany, center are the largest - Delphi can offer customers global cooperation for engineering-intensive projects, Delphi spokeswoman Rachelle Valdez said.

Some of the ideas the tech center is studying verge on the Jetson-like future. Burns said engineers are looking at ways to charge an electric vehicle's batteries wirelessly.

''There could be a mat in a restaurant parking lot where the vehicle could be charged while the people were eating in the restaurant. The cost would be added to their bill,'' he said.

A conventional approach would be to take surfaces and ideas from aerodynamicists, convert them into either rapid prototype parts or scale models of the sort of parts that you see on the race cars, and then put on a very large scale wind tunnel model and test them in a wind tunnel. In our case, our system involves taking those shapes and instead of making model parts we actually essentially mesh them and create an extremely sophisticated computer simulation, consisting of hundreds of billions of cells in a CFD model and essentially flowing digital wind, if you like, over this model in a variety of different simulations in a variety of different conditions.

Methods and systems for rapid prototyping of high density circuits

A preferred embodiment provides, for example, a system and method of integrating fluid media dispensing technology such as direct-write (DW) technologies with rapid prototype (RP) technologies such as stereolithography (SL) to provide increased micro-fabrication and micro-stereolithography.

A preferred embodiment of the present invention also provides, for example, a system and method for Rapid Prototyping High Density Circuit (RPHDC) manufacturing of solderless connectors and pilot devices with terminal geometries that are compatible with DW mechanisms and reduce contact resistance where the electrical system is encapsulated within structural members and manual electrical connections are eliminated in favor of automated DW traces. A preferred embodiment further provides, for example, a method of rapid prototyping comprising: fabricating a part layer using stereolithography and depositing thermally curable media onto the part layer using a fluid dispensing apparatus.

1. A method of rapid prototyping a part, the method comprising: fabricating a first part layer in a stereolithography apparatus; registering the first part layer on adirect-write apparatus; depositing a first trace of direct-write compatible media onto the first part layer; curing the first trace of direct-write compatible media deposited on the first part layer; registering the first part layer on thestereolithography apparatus; and fabricating a second part layer on top of the first part layer.

2. The method of claim 1 further comprising curing the first part layer, prior to depositing the direct-write compatible media.

3. The method of claim 1 further comprising creating an electrical interconnect.

4. The method of claim 1 further comprising building three-dimensional (3D) circuits.

5. The method of claim 1, wherein fabricating a second part layer includes encapsulating the direct-write compatible media.

6. The method of claim 1 further comprising: registering the second part layer on the direct-write apparatus; depositing a second trace of direct-write compatible media onto the second part layer such that the second trace and the first traceare operatively connected; curing the second trace of direct-write compatible media; registering the second part layer in the rapid prototyping apparatus; and fabricating a third part layer on top of the second part layer.

7. The method of claim 1 further comprising inserting one or more pilot devices into the part.

8. The method of claim 1, wherein the step of curing is accomplished with a device selected from the group consisting of: a ultraviolet light source, a particle bombarder, a chemical sprayer, a radiation impinger, an ink jet, an oven, a fan, apump, a curing device, a drying device that incorporates convection, conduction and/or radiation heat transfer and any combination thereof.

9. The method of claim 1, wherein the direct-write compatible media is selected from the group consisting of: inks, conductive inks, curable inks, curable media, conductive fluids, electronic inks, conductors, insulators, semi-conductivematerials, magnetic materials, spin materials, piezoelectric materials, opto-electronic, thermoelectric materials, radio frequency materials, ultraviolet curable resins, controlled reaction materials, precursor fluids, metal-organic liquids, solutions,suspensions, sol-gels, nanoparticles, colloidal fluids, thermoplastics, extrudable materials, thermosets, 2-part epoxy materials and any combination thereof.

10. The method of claim 1, wherein the part layer is fabricated by a material selected from the group consisting of: a stereolithography resin, a radically polymerizable organic compound, a cationically polymerizable organic compound, apolyether, a polyol compound, an elastomer particle, a curable ink, a photopolymer resin, a photopolymer powdered material, a hydrogel and any combination therefore.

The present invention relates to the general field of rapid prototype (RP), and methods and systems of dispensing fluid media such as direct-write (DW) technologies.