Cutting data calculator

Application

With the cutting data calculator you can calculate the spindle speed and the feed rate for a machining process. You can load the calculated values into an opened feed rate or spindle speed dialog box in the NC program.

In OCM cycles (#167 / #1-02-1) the OCM cutting data calculator is available.

OCM cutting data calculator (#167 / #1-02-1)

Requirement

  • Milling operation FUNCTION MODE MILL

Description of function

The Cutting data calculator window

On the left side of the cutting data calculator you enter the information. On the right side the control displays the calculated results.

If you select a tool defined in the tool management, the control automatically applies the tool diameter and number of teeth.

You can calculate the spindle speed as follows:

  • Cutting speed VC in m/min
  • Spindle speed S in rpm

You can calculate the feed rate as follows:

  • Feed per tooth FZ in mm
  • Feed per revolution FU in mm

Or you can use tables to calculate the cutting data.

Calculation with tables

Applying values

After the cutting data have been calculated, you can specify which values the control should apply.

You can choose among the following options for the tool:

  • Tool number
  • Tool name
  • Do not apply values

You can choose among the following for the spindle speed:

  • Cutting speed (VC)
  • Spindle speed (S)
  • Do not apply values

You can choose among the following for the feed rate:

  • Feed per tooth (FZ)
  • Revolution feed (FU)
  • Contouring feed rate (F)
  • Do not apply values

Calculation with tables

You must define the following in order to calculate the cutting data with tables:

  • Workpiece material in the table WMAT.tab
  • Table for workpiece materials WMAT.tab

  • Tool cutting material in table TMAT.tab
  • Table for tool materials TMAT.tab

  • Combination of workpiece material and cutting material in the cutting data table *.cut or in the diameter-dependent cutting data table *.cutd
  •  
    Tip

    Using the simplified cutting data table, you can determine speeds and feed rates using cutting data that are independent of the tool radius (e.g., VC and FZ).

    Cutting data table *.cut

    If you require specific cutting data depending on the tool radius for your calculations, use the diameter-dependent cutting data table.

    Diameter-dependent cutting data table *.cutd

  • Parameters of the tool in tool management:
    • R: Tool radius
    • LCUTS: Number of cutting edges
    • TMAT: Cutting material from TMAT.tab
    • CUTDATA: Table row from the *.cut or *.cutd cutting data table

Opening the cutting data calculator

To open the cutting data calculator:

  1. Edit the desired NC block
  2. Select the syntax element for the feed rate or spindle speed

  1. Select Cutting data calculator
  2. The control opens the Cutting data calculator window.

Calculating the cutting data with tables

The following prerequisites must be fulfilled in order to calculate the cutting data with tables:

  • The WMAT.tab table exists
  • The TMAT.tab table exists
  • The *.cut or *.cutd table exists
  • Tool material and cutting data table are assigned in the tool management

To calculate the cutting data with tables:

  1. Edit the desired NC block

  1. Open the Cutting data calculator

  1. Select Activate cutting data from table
  2. Use Select material to choose the workpiece material
  3. Use Select type of machining to choose the combination of workpiece material and tool material
  4. Select the desired values to be applied

  1. Select Apply
  2. The control applies the calculated values in the NC block.

Note

Use the +, -, *, /, (, and ) keys for calculations in the numerical input fields.