parametric-bearing-pillow-block

gistfile1.txt

// https://zoo.dev/docs/kcl-samples/a-parametric-bearing-pillow-block
// rewritten as a function.
// MARUEL: Currently not working as I don't know how to boolean merge two extrudes.

// A Parametric Bearing Pillow Block
// A bearing pillow block, also known as a plummer block or pillow block bearing, is a pedestal used to provide support for a rotating shaft with the help of compatible bearings and various accessories. Housing a bearing, the pillow block provides a secure and stable foundation that allows the shaft to rotate smoothly within its machinery setup. These components are essential in a wide range of mechanical systems and machinery, playing a key role in reducing friction and supporting radial and axial loads.

fn bearingPillowBlock = (length, width, height, cbDepth, cbDia, holeDia, padding, bearingDia) => {
  // (Needs to be updated). Sketch the block and extrude up to where the counterbore diameter starts.
  block = startSketchOn('XY')
    |> startProfileAt([-width / 2, -length / 2], %)
    |> lineTo([width / 2, -length / 2], %)
    |> lineTo([width / 2, length / 2], %)
    |> lineTo([-width / 2, length / 2], %)
    |> close(%)
    |> hole(circle({
         center: [
           -(width / 2 - (padding / 2)),
           -(length / 2 - (padding / 2))
         ],
         radius: holeDia / 2
       }, %), %)
    |> hole(circle({
         center: [
           -(width / 2 - (padding / 2)),
           length / 2 - (padding / 2)
         ],
         radius: holeDia / 2
       }, %), %)
    |> hole(circle({
         center: [
           width / 2 - (padding / 2),
           length / 2 - (padding / 2)
         ],
         radius: holeDia / 2
       }, %), %)
    |> hole(circle({
         center: [
           width / 2 - (padding / 2),
           -(length / 2 - (padding / 2))
         ],
         radius: holeDia / 2
       }, %), %)
    |> hole(circle({
         center: [0, 0],
         radius: bearingDia / 2
       }, %), %)
    |> extrude(height - cbDepth, %)
  
  // Create a second sketch that creates the counterbore diameters and extrude the rest of the way to get the total height. Note: You cannot use startSketchOn(block, 'end'). The extrude lives outside the bounds, and the engine will not execute. This is a known issue.
  secondHalf = startSketchOn({
         plane: {
           origin: { x: 0, y: 0, z: height - cbDepth },
           xAxis: { x: 1, y: 0, z: 0 },
           yAxis: { x: 0, y: 1, z: 0 },
           zAxis: { x: 0, y: 0, z: 1 }
         }
       })
    |> startProfileAt([-width / 2, -length / 2], %)
    |> lineTo([width / 2, -length / 2], %)
    |> lineTo([width / 2, length / 2], %)
    |> lineTo([-width / 2, length / 2], %)
    |> close(%)
    |> hole(circle({
         center: [
           -(width / 2 - (padding / 2)),
           -(length / 2 - (padding / 2))
         ],
         radius: cbDia / 2
       }, %), %)
    |> hole(circle({
         center: [
           -(width / 2 - (padding / 2)),
           length / 2 - (padding / 2)
         ],
         radius: cbDia / 2
       }, %), %)
    |> hole(circle({
         center: [
           width / 2 - (padding / 2),
           length / 2 - (padding / 2)
         ],
         radius: cbDia / 2
       }, %), %)
    |> hole(circle({
         center: [
           width / 2 - (padding / 2),
           -(length / 2 - (padding / 2))
         ],
         radius: cbDia / 2
       }, %), %)
    |> hole(circle({
         center: [0, 0],
         radius: bearingDia / 2
       }, %), %)
    |> extrude(cbDepth, %)
  // MARUEL: How to merge the two blocks?
  return block | secondHalf
}

// Define constants such as length, width, height, counter-bore depth and diameter, bearing diameter, hole location padding, and more
length = 6
width = 4
height = 1
cbDepth = .25
cbDia = .7
holeDia = .375
padding = 1.5
bearingDia = 3

bearingPillowBlock(length, width, height, cbDepth, cbDia, holeDia, padding, bearingDia)