Available · version 1.1

Ramped Entry

Configure path-ramp entry for Cadivari contours and pockets.

Updated August 20263 min readCAM & machines

Recommended test

  1. Create a 100 × 60 mm rectangle, add an Outside Contour, and leave tabs Off.
  2. Confirm Ramp and 3.0° are selected. Hover or focus the question marks beside Entry and Angle; each should explain its own setting without a separate help link.
  3. Set Cut to 4 mm and Step to 2 mm. In the motion summary, confirm two Approaches, ramp moves, and zero Plunges.
  4. Open 3D and animate. Each pass should approach the previously cleared depth, descend while moving around the path, complete a full loop at target Z, and retract.
  5. Inspect G-code. Ramp blocks must be G1 moves containing both planar motion and descending Z.
  6. Switch Entry to Plunge. The ramp count should become zero and the straight-plunge cutter warning should appear.
  7. Restore Ramp, enable tabs, and try a very shallow angle. If the clear path before the first tab is too short, export must remain blocked with a specific ramp-length message.

01 · SHARED MOTION

Previous depth to target depth

The first ramp begins at stock-top Z0. Later ramps approach the previous pass depth through the already cleared start channel. The cutter then descends along the stored path at the selected angle. Once target Z is reached, Cadivari follows the complete path once at that exact depth before retracting to Safe Z.

ApproachVertical feed move through the cleared start channel
RampCombined XY and descending Z feed motion
CutComplete target-depth contour or pocket clearing loop
RetractVertical return to configured Safe Z

02 · CONFIGURABLE

One to fifteen degrees

The compact Entry row keeps its general behavior in the adjacent question-mark tooltip. When Ramp is active, Angle has a separate tooltip for its geometry. The default is 3°. A lower angle needs more path length; a higher angle enters more steeply. Cadivari calculates the required length from the largest depth step and blocks a ramp that cannot fit within the guarded path.

ramp length = depth step ÷ tan(angle)

2.000 mm at 3° ≈ 38.162 mm

The field is geometry validation, not a cutting recommendation. Confirm a suitable ramp angle, feed, cutter, and material strategy for the real job.

03 · GUARDED GEOMETRY

Keep clear of tabs with exact motion after circular entry

On tabbed contours, the ramp must finish before the first retained bridge. Move the start point or tab, increase the angle, or reduce stepdown when the available clear segment is too short.

Circular ramps use bounded linear entry segments. At the bottom of the ramp, Cadivari places the endpoint back on the mathematical cutter-centre circle before the exact G2/G3 target-depth loop begins.

CURRENT SCOPE

Contour and Pocket entry v1

  • Available for rectangle contours, general closed contours, and rectangle/circle pockets
  • New supported operations default to a 3° path ramp
  • Older saved contours without entry data reopen as straight plunge, preserving their previous behavior
  • Open Contour remains straight-plunge only until a separate lead-in strategy is designed
  • Tab lift and lower transitions remain vertical
  • No helical entry, lead-in arc, collision model, or cutter suitability recommendation yet

Always compare the 3D animation with the exact line-by-line G-code before export.