brake-caliper

// Brake Caliper
// Brake calipers are used to squeeze the brake pads against the rotor, causing larger and larger amounts of friction depending on how hard the brakes are pressed.

// Define constants
const rotorDiameter = 12 // inches
const rotorInnerDiameterThickness = 12.6 // mm
const rotorTotalThickness = 25.4 // mm
const caliperTolerance = 5 // mm
const caliperPadLength = 40 // mm
const caliperThickness = 10 // mm
const caliperOuterEdgeRadius = 10 // mm
const caliperInnerEdgeRadius = 3 // mm

// Create the plane for the brake caliper. This is so it can match up with the rotor model.
const brakeCaliperPlane = {
  plane: {
    origin: { x: 0, y: 0, z: 0 },
    xAxis: { x: 1, y: 0, z: 0 },
    yAxis: { x: 0, y: 1, z: 0 },
    zAxis: { x: 0, y: 0, z: 1 }
  }
}

// Sketch the brake caliper cross section
const brakeCaliperSketch = startSketchOn(brakeCaliperPlane)
  |> startProfileAt([rotorDiameter/2 * 25.4+caliperTolerance, 0], %)
  |> line([0, rotorTotalThickness + caliperTolerance - caliperInnerEdgeRadius], %)
  |> tangentialArc({
    offset: 90,
    radius: caliperInnerEdgeRadius,
  }, %)
  |> line([-caliperPadLength + 2 * caliperInnerEdgeRadius, 0], %)
  |> tangentialArc({
    offset: -90,
    radius: caliperInnerEdgeRadius,
  }, %)
  |> line([0, caliperThickness - caliperInnerEdgeRadius * 2], %)
  |> tangentialArc({
    offset: -90,
    radius: caliperInnerEdgeRadius,
  }, %)
  |> line([caliperPadLength + caliperThickness - caliperOuterEdgeRadius - caliperInnerEdgeRadius, 0], %)
  |> tangentialArc({
    offset: -90,
    radius: caliperOuterEdgeRadius,
  }, %)
  |> line([0, -2*caliperTolerance-2*caliperThickness-rotorTotalThickness + 2 * caliperOuterEdgeRadius], %)
  |> tangentialArc({
    offset: -90,
    radius: caliperOuterEdgeRadius,
  }, %)
  |> line([-caliperPadLength - caliperThickness + caliperOuterEdgeRadius + caliperInnerEdgeRadius, 0], %)
  |> tangentialArc({
    offset: -90,
    radius: caliperInnerEdgeRadius,
  }, %)
  |> line([0, caliperThickness - 2 * caliperInnerEdgeRadius], %)
  |> tangentialArc({
    offset: -90,
    radius: caliperInnerEdgeRadius,
  }, %)
  |> line([caliperPadLength - 2 * caliperInnerEdgeRadius, 0], %)
  |> tangentialArc({
    offset: 90,
    radius: caliperInnerEdgeRadius,
  }, %)
  |> close(%)

// Revolve the brake caliiper sketch
const brakeCaliper = revolve({
    axis: "Y",
    angle: -70,
  }, brakeCaliperSketch)