CNC milling machine (3-axis milling)
Our CNC machine is a 3 axis milling machining center. It is commonly used for precision machining of parts for the automobile industry and for a variety of other applications, including for many consumer goods.
It is similar to the CNC machines used by many metal suppliers, so our CNC engineer can make tests and fine-tune the settings, and then instruct the suppliers how to run mass production in good conditions and at the appropriate speed.
We use it for testing production processes, for rapid prototyping (typically for plastic or metal parts), and for mass production of certain metal components.
Here are two key stats:
- Spindle max speed: 24,000 RPM
- Positioning accuracy: +/- 0.005 mm
How it works
Our CNC machine holds the workpiece of material still while its onboard industrial computer controls the rotating cutter to remove material to form the required design, therefore this is subtractive prototyping. It can follow three directions of freedom, X, Y, and Z, which is why this machine is known as a 3-axis mill.
- Very flexible in its applications and in the materials it can shape.
- Can drill holes in-center or off-center, can do straight or angled cuts, and accepts material that comes in many shapes (not necessarily cylindrical).
- For prototypes: making parts in certain shapes quickly
- For small series (manufacturing): fabricating some metal or plastic parts internally, with a MOQ of 1 piece
- For DFM and industrializing the fabrication of metal parts for mass productions: testing for optimizing the settings of the CNC machines, and challenging the machining suppliers when needed. We have an in-house CNC engineer for that.
- Not ideal for many shapes (e.g. products with deep cavities), for which other processes will be needed.
- Will not present the same mechanical properties as mass production for parts that will be injection molded, cast, etc.
3D printer (SLA technology)
Our 3D printer uses SLA (stereolithography), a layer by layer manufacturing method using photosensitive resin (polyacrylate) as the raw material for the parts and prototypes being fabricated. Since layers are added one by one, this is additive prototyping.
How it works
The SLA printing process utilizes an industrial computer and a vat of liquid resin which is cured precisely layer by layer by a UV laser to form a part. As one layer is made, the printer moves it up a layer out of the pool of polymer and then the next layer is made, and so on, until the part is complete.
- Many types of resin can be used (hard plastic, soft rubber, transparent…)
- Relatively high precision (+/- 0.1%) for a smooth surface; can make walls as thin as 0.5mm
- Can generate parts that are up to 450 mm long
- Sofeast can generate the 3D drawings either by designing them in a CAD software or by 3D-scanning an existing object; we can then 3D print it
- Prototypes: making product enclosures as well as internal custom parts (can also be used for generating different shapes and getting feedback quickly, in the early exploratory phases)
- Makes assembly fixtures for our internal use
- It is very fast compared to other methods of creating the first few parts and prototypes (such as a mold for plastic injection molded parts which takes a fairly long time to fabricate before it can be used)
- Parts are structurally different (and, in a way, more fragile) than injection molded parts, so testing at this stage can’t give a definite indication of reliability & durability
- The resin polymer used is sensitive to sunlight and will degrade over time, affecting the mechanical properties of the part
- For a nice visual aspect, post-processing may be needed to eliminate the mark left by the part’s support (which is needed to hold it during printing)
- Only one color can be printed at a time
We often use our in-house Reeyee 3D scanner to get the 3D dimensions of parts, products, or tools when that’s necessary. For example, some customers may need to replicate their own product, but their previous suppliers refused to give them the CAD drawings.
Once a shape has been 3D scanned, we can replicate it either by 3D printing or CNC machining, so the scanner is a good complement to those two machines.
It provides 3 scanning modes:
- Free scan
- Handheld scan
It also has a <0.1mm single frame scan accuracy for very accurate scans and can scan objects with a diameter between 3 to 70cm.
How it works
The object to be scanned is placed on the scanner’s platform which slowly rotates as the cameras take the scan. The object can be turned over by hand so the scanner can get all angles and doesn’t miss anything. The 3D scan is fed directly back to a connected computer in high resolution.
Laser Cutting Machine
Our CNC-controlled CO2 laser cutting machine is used to cut parts for prototypes and products in-house.
Many materials come to us in flat plates. We have to cut them with high precision, in a controlled and repeatable manner.
For production runs, this machine provides us with both the speed and precision that some of our projects require.
- Power: 80W
- Working area: 1000 x 800 mm
- Engraving speed: up to 800mm/s
- Cutting speed: up to 400mm/s
- Accuracy: +/- 0.1 mm
Our sandblasting machine is great for quickly adding a nice finish to prototypes and products that have been assembled. It’s a great alternative to slow, laborious activities when done by hand, such as sanding, deburring, grinding, and other finishing tasks that might be done to prototypes, and during assembly or the rework of defective parts.
Our model is a siphon blast machine where negative pressure helps suck the sand into the spray nozzle inside before blasting the parts etc to be finished. This is one of the more energy-efficient sandblasting machine types.
Typical applications for our sandblasting machine
- Finishing 3d-printed components (removing striation lines)
- Line removal from cast metal products
- Deburring and descaling metal products
How it works
The part to be finished, such as a metal component, is loaded into the blast cabinet. Upon activation, air mixes with the abrasive, in this case sand is used. The sand is then fired at the part at high pressure through a nozzle due to negative pressure that’s created by the machine’s valves. The operator can check on the finishing progress by looking at the part through the large observation window.