CAD Craft

A resource to CAD Craft specialists, and a showcase of my work — in both material and virtual worlds

Archive for sewing machine

Sewing machine, single needle/bobbin configuration

A variation in design, utilizing a single needle/bobbin(upper)  — whereas the previous configuration is better suited for embroidery. 

Sewing/embroidery machine

One of the design goals is to bring the thread feeding internal to the machine, an adaptation of say the hand towel dispensers in some restrooms where the paper comes out of the center of the roll, instead of along the outside. This requires a different bobbin design, which is more challenging, but nearly complete. The benefits include fewer objects, things which can get caught on fabric, fingers, etc. If you have ever a thread become unknowingly caught, and the bobbin end up in knotted disarrary, you know how frustrating this can be. This arrangement also allows for a simpler loading/unloading process of the needle assembly.

Sewing/embroidery machine

Sewing/embroidery machine

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Sewing Machine, Revisions

I’ve been continuing to revise & tweak the design, adding in some things from feedback I’ve received from some folks I know who sew.  As you will see in the close up below, I have added feed-throughs for the thread from bobbin to needle.

Sewing/embroidery machine

This section view gives a sense of the thread feed-thru to needle arrangement

Sewing/embroidery machine

Sewing machine

These are some shots of a sewing machine design I’ve been fiddling with in SolidWorks. It’s almost there…a few developmental images.

Sewing/embroidery machine

This was the first assy, with two of the main components — vertical pillar/controls & arm assy — the drive assy came last.

Sewing/embroidery machine

Coming up with a visual style which would be considered ‘advanced’, without being boxy, or sacrificing aesthetic efficiency was the first challenge. Integrating the control features expected today, along with visual interface and widely proliferating CAD apps for sewing was another key one.

Sewing/embroidery machine

Having had seamstresses in my family, I was well aware that, despite cautions to the contrary, for quick short lifts, the horizontal arm is often used as an ad hoc handle. This means some accomodation for this in terms of stress and fit was called for. Check back for an expansion on these comments as the project progresses…

Sewing/embroidery machine

Sewing/embroidery machine