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First of all, not an engineer. Clueless to proper lingo or terminology.

Project. Looking to create a compact, pen like device by using a 12v dc motor to create a reciprocating motion. Kind of similar to a sewing machine or even a tattoo pen. The reciprocating shaft needs to travel a 1 to 2 inches. The entire mechanism needs to be in a straight line, light weight with minimal vibration and easy to minor maintenance.

This is the best example I found to demonstrate the desired motion and shape. https://youtu.be/8MdA1leM6Y0

As far as rpm and torque. No idea but portable sewing machine-ish might better describe these types of stats.

Another criteria is the utilize off shelve parts. Like with the YouTube example, no idea how I could design the cam barrel.

Thank you in advance for your valuable expertise.

Espey127
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1 Answers1

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The sewing machine mechanism is a possibility.

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which is an extension of the slider crank mechanism.

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Figure: slider crank mechanism (source Britannica)

The skotch yoke mechanism which:

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Figure: (source: grabcad)

Also another solution from another question.

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Figure (source this question)

There are many variations of this.

NMech
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