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.
file_new_de

  1. Select Create new table
  2. The control opens the Create new table window.

  1. Select the tab folder
  2. Select the Proto_Skiving.TAB format
  3. Select Select a path
  4. The control opens the Save as window.

  1. Select a folder
  2. Enter name
SF_3_Neue_Tabelle_Speichern_Unter_Erstellen

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