INDUSTRIAL MIXER

Project was to design a new drive for mixers of different sizes. The overall objective was to incorporate into the drive a belt and gear reducer. The following was applied to design the mixer:

  • Preliminary Design Decisions

    • type of reduction, estimated pulley and gear diameters as well as belt type and quantity

  • Belt Drive Selection

    • select standard pulley diameters, calculate centre distances and belt length

  • Bearing Design

    • Rated Load, Matching ID of Ball Bearing with Shaft Diameter​

  • Key Design and Hub Lengths

    • Key/Hub Dimensions and Tolerances 

  • Gear stresses and Material Selection

    • Gear tooth forces

    • Gear tooth geometry

      • pressure angle, diametral pitch, number of teeth & more

    • Gear stress analysis

      •  Bending and Contact Allowable Stress

MACHINE DESIGN: Industrial Mixer
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Mixer Internals
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Side view of internals
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Gear Transmission
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Custom shaft with custom gear and bearing
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Custom shaft
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Top Level Assembly Drawing
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Gear Transmission Drawing
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Calculations done in Excel
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Designed in SolidWorks.

ELECTROMECHANCIAL GRIPPER

For our second year applied manufacturing project, we had to come up with a creative solution to pick up small objects.

We were given only one DC motor, and had to control the arm with only 12 Volts. As for anything else we wanted to add to the project, we would have to supply ourselves.

 

The gripper would be controlled with two solenoids, and the arm was controlled with the DC Motor. How the arm worked was by using a 12 mm diameter lead screw with a coupling, to control the up and down movement of the arm. We used 3D printing and laser cutting to create the parts.

Designed in SolidWorks & Fusion 360. Programmed with Ardunio Microcontrollers.

PNEUMATIC EXTENDER

Designed a pneumatic extender to be used for actuation. The pneumatic cylinder sized for this application and withstand a static load of 40 lb. 

A ball joint end is attached to the cylinder rod, which contains a small shaft. As the cylinder extends, the shaft attached to the ball joint slides through the slot, allowing the aluminum bar (see drawing P001001) to rotate.

Pneumatic Extender
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Pneumatic cylinder was sized for 30 lb application.
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Pneumatic Extender Top Level Drawing
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Pneumatic Extender BOM
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Part drawing (to be machined)
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Designed in SolidWorks.

GOVERNOR SWITCH

While disassembling and reassembling this 2HP Birggs and Startton small engine (single cylinder) I came across a problem. I was applying to much force on to this switch on the governor and broke the switch. I figured I should try to solve this through using design skills. I designed the switch in CAD software Fusion 360 and manufactured it through 3D Printing. The piece in pink (only colour of filament I had at the moment)  and is made of PLA and is still lasting till this day. 

This switch I have made has actually come in handy because it is a solution to a problem that is occurring in more small engines in our highschool shop. I've had to print more of these switches for many other engines (5 engines are currently using this piece.) It is now produced in ABS which is better in withstanding heat and also is now printing in other colours such as blue and grey (although the pink in my opinion is a nice contrasting colour compared to the casted and forged parts.) Here's a link to it working on Youtube. 

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Designed in Fusion 360.