assembly tools

3 Articles

Photo of Pixel Pump Pick & Place Machine

Pixel Pump Pick & Place Positions Parts Precisely

October 1, 2021 by 18 Comments

You’ve finally decided to take the plunge and build a board with surface-mount parts. After carefully dispensing the solder paste with a syringe, it’s time to place the parts. You take up your trusty tweezers and reach to grab a SOIC-14 logic IC—only there’s not a great way to grab it. The IC is too long to grab one way and has leads obstructing the other. You work around the leads, drop the IC into place, and then pick up an 0402 resistor. You gently set the resistor into your perfectly dispensed solder paste, pull the tweezers away, and the resistor has stuck to your slightly magnetic tweezers. [Robin Reiter] realized that hobbyists and small manufacturers needed a better way to assemble their surface-mount designs, so he’s building the Pixel Pump Pick & Place, an open-source vacuum assembly tool.

Vacuum assembly tools use a blunt-tipped needle and suction to pick up surface-mount parts. Pressing an attached foot pedal disables the vacuum, allowing the part to be gently released. [Robin] thought to include a few thoughtful features to make the Pixel Pump even more useful. It has adjustable suction presets and a self-cleaning feature to blow out any solder paste you accidentally suck up. Most of the non-electronic parts are 3D printed, and [Robin] intends to make the entire design open-source.

[Robin] has a long history of designing tools to make surface-mount assembly easier—you may remember his 3D-printed magazines for dispensing surface-mount parts. If you want to take your PCB assembly setup to the next level, check out the PnPAssist, which shines a laser crosshair right where you should put each part.

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Modular Fixture Plates Perfect For Small Production Runs

September 26, 2019 by 47 Comments

If you’ve ever done any small production runs of anything that needs a bit of assembly, you know that jigs and fixtures are a huge time saver. However, these usually need to be mounted, which means you end up drilling holes in your workbench or making one-off mounting plates. [Jim Smith] is no stranger to this problem, and created the Pact Plate, an affordable modular fixture plate and is running a Kickstarter campaign to get it produced.

Each plate 150 mm × 150 mm in size with a 25 × 25 mm grid of holes with M4 threaded inserts. This allows quickly and easily mounted to and removed from the plate without the need to drill additional holes. Plates can be bolted together to form larger plates. The demo video shows him using a variety of 3D printed jigs, toggle clamps, PCB and part holders (available for download) and even a robot to quickly set up small assembly stations. This could also save a lot of time during the prototyping and development phases to hold parts in place.

[Jim]’s prototypes are all 3D printed, but want’s to get tooling made to produce the plates using injection moulding. He doesn’t say what material he intends to use, but it’s likely some type of fibre reinforced plastic. He claims the rigidity is close to that of die-cast aluminium. One addition we would like to see is some plugs for the unused hole to prevent small components from falling into them.

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The Obscure Electronics Tools You Didn’t Know You Needed

March 26, 2018 by 76 Comments

The right tool for the job can turn a total headache into a 30-second operation. This is all the more important when you’re trying to streamline an assembly process, and the reason why you’ll find so many strange and wonderful purpose-built tools on any production line. With a nod to that old adage, [EvilMadScientist] have collected the tools you didn’t know you needed – until now.

If you’re wiring big through-hole boards all day, you’ve probably bemoaned the uneven bends on all your resistors. How did the big companies get it right way back when? They used a tool to set the distance of the resistor legs just right. What about DIP ICs? It’s a total pain trying to take them fresh out of the tube and get them to seat in a socket, but there’s a tool to do that too. It’s actually a two-part series, and while we’re sure you’ve all seen a solder sucker before, the fresh take on helping hands is pretty ingenious.

Overall, it’s a combination of little things that, with a bit of cash or a day’s work, you can have in your own lab and once you’ve got them, you won’t ever want to go back. Be sure to tell us about your favourite obscure tools in the comments.

Now that you’ve got your tools to hand, why not wrap them all up in a handy workstation?