Forerunner 3D Printing has been working with customers since day one on their 3D Printing for automated equipment needs. It started with a customer approaching our sister company, DeWys Engineering, with a challenging end of arm tool that they needed designed and built on a tight deadline. After evaluating the tooling requirements and assessing the options available to manufacture the end of arm tool components, it was decided to evaluate the potential for using 3D Printing to produce some of the more complicated parts of the end of arm tool. Test gripper fingers were 3D Print out of Nylon on F3DP’s HP Multi Jet Fusion 4200 3D Printer, the parts ended up being very strong, wear resistant, and able to hold up to 300 Degree temperatures of the parts it was handling. Due to how well the test parts worked as well as lower cost, and shorter lead time then traditional manufacturing such as CNC and EDM equipment that the final version of the end of arm tool would use as many MJF 3D Printed components as was possible.
After this early success the Designers at DeWys Engineering began to look across the the various automated equipment projects they were contracted to work on for other instances where 3D Printing for machine builders made since. Over time, they tested many other applications for using 3D Printing for Automated Equipment, the following are some examples of the applications they have had success with.
These 3D Printed nesting details are perfect for parts that have complex geometries that need to be held securely while other operations are taking place in the automated machine like clip driving, degating, inspection, etc. These 3D Printed nests can achieve an accuracy of +/-.010″ over a length of 6 inches and dowel holes used for locating the nest onto the machine can be printed directly into the part. If the nest requires holes to be tapped in it for mounting other details or sensors, using key-locking inserts is recommended. Using 3D printed nests to hold class “A” parts is also a possibility when one of these nests is combined with a process called flocking that will keep the nest from scratching the part when it is loaded into it. If you have questions on if 3D Printing for Automated Equipment will work for your specific nesting application contact one of our Sales Engineers to get feedback on your project requirements.
For more information on 3D Printed End Of Arm Tooling Grippers check out our page specifically on this topic. Here are some examples of EOAT components that we have worked on for customers:
There are lots of other details that can be 3D Printed for Automated Equipment application. From vision system and sensor mounts to display mounts and guarding details, here are some examples:
Yes, we have submerged these MJF 3D Printed parts in light oils and coolants for extended periods of time. They do not absorb any of these fluids and can be cleaned with a can of break cleaner and a rag. Click here for a page specifically dedicated to the chemical resistance of MJF parts and what they can hold up to.
The Nylon is extremely tough and has held up well to the testing we have done with using it to nest steel parts. For more detailed information on this question check out our page on MJF part wear.
We did a research project to test various MJF 3D printed thread sizes for both thread pull out force as well as material tensile strength. You can find this information here.
PA-12 Nylon MJF component can be flocked or pasti-diped in order to 100% guarantee that a Class A finish is not damaged. Another option is to print the parts in a Class A safe TPU. Nest inserts can also be printed in the TPU material so that the nest can still be rigid but will not actually contact the part.
Flocking is a process by which the part is covered in a chopped velvet to give the part a soft finish, here is an example video that shows how the flocking process is done:
Yes, there are many ways to put threads into these parts, here are a few examples we have tested and had success with for other customers:
Here is a link to our Multi Jet Fusion Parts Design Guide (this is the process we use to make details for machine builders), it will offer you useful design tips for this 3D printing process as well as answers to many frequently asked questions about about the HP Multi Jet Fusion 3D printing process:
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