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Guía rápida de diseño: Impresión 3D

La impresión 3D puede parecer un campo minado, pero no tiene por qué serlo.

Cada impresora y tecnología 3D tiene diferentes capacidades de impresión, y existen características comunes que se utilizan en la industria para probarlas. El equipo de Ricoh 3D utiliza diversos escenarios bien documentados para recomendar consideraciones clave en la fase de diseño.

Siga nuestra sencilla Guía de diseño de impresión 3D para ayudar a seleccionar los mejores materiales y técnicas para su proyecto.

Tamaño mínimo de función

Este es el tamaño mínimo que garantizamos que el sistema podrá imprimir. Es posible que la impresora no pueda reproducir características inferiores a este tamaño.

Desplazamientos y piezas móviles

Esta es la distancia mínima requerida entre piezas multicuerpo para lograr un ajuste perfecto, permitiendo el libre movimiento de las piezas. Cualquier elemento inferior a este valor podría terminar fabricándose como una sola pieza o elemento y podría no funcionar según lo previsto.

Agujeros

Este es el tamaño mínimo requerido para que la impresora reproduzca un orificio limpio.

Tolerancias

Esta es la tolerancia aceptada para cada tecnología que debe considerarse durante la fase de diseño.

Printing Type SLS HSS / MJF FDM
Minimum Feature Size
Minium Feature Size Illustration

Minimum Feature Size

The minimum size that we can guarantee the printer will be able to print. Any features under this size may not be reproduced by the printer.

 0.8mm-1.0mm 0.5mm 1.0mm
Minimum Offset
Minium Offset Illustration

Minimum Offset

The minimum distance required between multi body parts to achieve a clearance fit allowing the free movement of parts. Any features under this value may end up being produced as one part or feature, and may not function as intended.

 0.3mm 0.3mm 0.5mm
Minimum Hole
Minium Hole Size Illustration

Minimum Hole Size

The minimum size required for the printer to reproduce a clean hole.

 1.5mm 1.5mm 2.0mm
Tolerance
Tolerance Illustration

Tolerance

The expected deviation in size that is likely to occur during the printing process.

±0.3% per 100mm (lower limit 0.3mm) ±0.3% per 100mm (lower limit 0.3mm) ±0.3% per 100mm (lower limit 0.3mm)
Support Considerations

If the part is to be free from unsintered powder then any hollow sections without an opening (in the design) will need to have a drain hole added and bonded into place after the manufacturing process. Without the drain hole the unsintered powder is impossible to remove and will remain contained within the part.

It is recommended that any sections greater than 6mm in thickness are hollowed in order to maintain part geometry. This will be done by the RICOH Rapid Fab team prior to printing and does not need to be considered during the design stage.

Drain holes and hollowing of thick sections will be added by our engineers prior to printing. We will always seek approval from the customer prior before printing.

All files sent to us are analysed prior to the printing process. We will advise of any issues with the geometry that may lead to problems during the printing or post processing stage.

If the part is to be free from unsintered powder then any hollow sections without an opening (in the design) will need to have a drain hole added and bonded into place after the manufacturing process. Without the drain hole the unsintered powder is impossible to remove and will remain contained within the part.

Drain holes and hollowing of thick sections will be added by our engineers prior to printing. We will always seek approval from the customer prior before printing.

All files sent to us are analysed prior to the printing process. We will advise of any issues with the geometry that may lead to problems during the printing or post processing stage.

The majority of FDM materials have soluble support material. So as long as water can enter the supported areas, this material is simply washed away.

Materials such a ULTEM and PC do not have a soluble support material option so 'break away' support material is used, meaning it has to be removed by hand with tools. If the support material is not accessible or simple to remove then it may be difficult to achieve the desired design, which limits the complexity of design for these materials. A ball-within-a-ball structure for instance (pictured) would not be possible with ULTEM or PC.

All files sent to us are analysed prior to the printing process. We will advise of any issues with the geometry that may lead to problems during the printing or post processing stage.

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