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Plate cam, constant acceleration (parabolic) rise 12 mm, base circle R20, for a flat-faced follower

What profile does a constant acceleration (parabolic) plate cam have? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: parabolic cam, plate cam, disc cam, flat-faced cam, leva de disco, Kurvenscheibe

Exact dimensions. True size, with no printing tolerance added.

length
52.0 mm
width
52.0 mm
height
6.0 mm

Notes

  • Disc cam (6 mm, Ø5 bore) for a radial flat-faced follower on a 20 mm base circle: rise 12 mm over 120° with constant acceleration (parabolic) motion, dwell 60°, return over 120°, dwell 60°.
  • Profile computed point by point (720 points) from the displacement law: envelope of the flat face: contact at x = ds/dθ from the follower's axis.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Plate cam, constant acceleration (parabolic) rise 12 mm, base circle… size chart

dimensionvalue
base circleR20
rise12 mm over 120°
dwells60° high, 60° low
lawconstant acceleration (parabolic)
boreØ5
thickness6 mm

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 138: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

plate-cam-parabolic-flat-r20-h12cam, z 0..6, follower on +Y at cam angle 0STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=plate-cam-parabolic-flat-r20-h12

Plate cam, constant acceleration (parabolic) rise 12 mm, base circle R20, for a flat-faced follower, isometric render of a generated part
Render of plate-cam-parabolic-flat-r20-h12 from the free STEP; not to scale.

Fits with

Plate cam with flat-faced follower (constant acceleration (parabolic) rise), isometric render of a generated part
Plate cam with flat-faced follower (constant acceleration (parabolic) rise)5 sizes★ 1 file

Questions

What profile does a constant acceleration (parabolic) plate cam have?

Disc cam (6 mm, Ø5 bore) for a radial flat-faced follower on a 20 mm base circle: rise 12 mm over 120° with constant acceleration (parabolic) motion, dwell 60°, return over 120°, dwell 60°.