Technology table for Cycle 287 Gear Skiving

Application

In Cycle 287 GEAR SKIVING, you can use the cycle parameter QS240 NUMBER OF CUTS to call a table containing technology data. The table is a freely definable table, and as such is in *.tab format. The control provides you with a template. In the table, you define the following data for each individual cut:

  • Feed rate
  • Lateral infeed
  • Lateral offset

Requirements

  • Software option 157: Gear Cutting

Parameters in the technology table

Parameter in the table

The technology data table contains the following parameters:

Parameter

Function

NR

Number of the cut that also corresponds to the number of the table row

FEED

Feed rate in mm/rev or 1/10 inch/rev for the cut

  • This parameter replaces the following cycle parameters:
  • Q588 FIRST FEED RATE
  • Q589 LAST FEED RATE
  • Q580 FEED-RATE ADAPTION

Input: 0...9999.999

INFEED

Lateral infeed of the cut. This entry is incremental.

  • This parameter replaces the following cycle parameters:
  • Q586 FIRST INFEED
  • Q587 LAST INFEED

Input: 0...99.99999

dY

Lateral offset of the cut (to improve the removal of chips).

Input: –9.99999...+9.99999

cyc287_5
  • Notes
  • The unit used in the NC program determines whether millimeter or inch units are used.
  • In order to avoid contour distortions, HEIDENHAIN recommends that you do not program an offset dY in the last cut.
  • HEIDENHAIN recommends that you program only minimum offset values dY in the individual cuts, because this might result in contour damage.
  • The sum of the lateral infeeds (INFEED) must result in the tooth height.
    • If the tooth height is greater than the total infeed, the control will display a warning.
    • If the tooth height is less than the total infeed, the control will display an error message.

    Example:

    • TOOTH HEIGHT (Q563) = 2 mm
    • Number of cuts (NR) = 15
    • Lateral infeed (INFEED) = 0.2 mm
    • Total infeed = NR * INFEED = 3 mm
    • In this case, the tooth height is less than the total infeed (2 mm < 3 mm).

      Reduce the number of cuts to 10.

Creating a technology table

  1. To create a table containing technology data:
TablesMainIcon

  1. Select the Tables operating mode
NewTabIcon-active

  1. Select Add
  2. The control opens the Quick selection and the Open File workspaces.
tableNew

  1. Select Create new table
  2. The control opens the Create new table window.
  3. Select the tab folder
fileInsertIconBig

  1. Select the Proto_Skiving.TAB prototype
SF_3_Neue_Tabelle_Pfad_waehlen

  1. Select Select a path
  2. The control opens the Save as window.
  3. Select the table folder
  4. Enter the desired name
SF_3_Neue_Tabelle_Speichern_Unter_Erstellen

  1. Select Create
  2. The control opens the technology table.