Embedded Files
Mandrel Assembly
Mandrel Assembly
Seen here is a CAD Assembly of our mandrel device.
Below are dimension sheets of each of the parts needed for the assembly. Note that these exclude purchased parts such as the motor.
Exploded View
Exploded View
machine_explode.mp4CAD Drawings of Custom Parts
CAD Drawings of Custom Parts
Container
Container
The container is used to hold the billet, as well as attach to the die cover for stability.
Ram Head Adapter
Ram Head Adapter
This adapter lets us attach the ram to the rack system.
Die Cover
Die Cover
The die cover is used to secure the die to the machine.
14mm Die
14mm Die
The die hole is what forms the billet into the desired shape.
Drilled Rack
Drilled Rack
The rack for pushing the ram through the container
Frame
Frame
This frame keeps the Container mounted firmly to the floor.
Floating Mandrel
Floating Mandrel
The floating mandrel will allow the billet to be pushed through the die around it and form a cylindrical shape.
Ram Head
Ram Head
This ram pushes the mandrel through the die.
18mm Die
18mm Die
Die for producing 18mm tubes.
Purchased Pre-Made Parts
Purchased Pre-Made Parts
Motor
Motor
Part Number 6409K12 from McMaster-Carr
Continuous Speed & Torque: 1.3 RPM @ 800 in.-oz.
The primary factor in choosing a motor is maximum torque output. Secondary factors are cost, reasonable voltage requirements, and mounting ability.
From the calculations, the motor should have at minimum 305 in.-oz. of torque for continuous operation. Given this requirement, Compact Square-Face DC Gearmotors were the best choice, as other types of motors were either unable to meet this torque requirement, were unnecessarily more expensive, or had poorer mounting capabilities.
Knowing the motor and the minimum required torque, the operation point for the motor is then calculated to be approximately 1.733 RPM for a torque of 305 in.-oz.
Note: As McMaster-Carr does not provide a Torque-RPM chart for the 6409K12, the chart was made through linear interpolation, following the design principles of Torque-RPM charts found for other McMaster-Carr motors.
Page updated
Google Sites
Report abuse