Thread chasing by interpolating axes X3 and Z1

For some special machining operations, for example when wishing to avoid using an extremely offset tool, this tip will enable internal chasing to be carried out with the tool on the end piece (T31-T34) by using axes X3 and Z1 and not X3 and Z3.
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Tips and Tricks

Thread chasing by interpolating axes X3 and Z1

Compatibility :
DECO 7/10a | DECO 13a | DECO 13bi | DECO 20a/26a

Technology

• PNC
• TB-DECO
• Software Hotline
• Tips and Tricks

Description:
For some special machining operations, for example when wishing to avoid using an extremely offset tool, this tip will enable internal chasing to be carried out with the tool on the end piece (T31-T34) by using axes X3 and Z1 and not X3 and Z3.

As the TB-DECO is a programming tool with almost unlimited possibilities, this particular combination of axes can be executed quite easily provided a few model adaptations have been made.

This procedure requires somewhat special programming. It involves creating an additional operating line in the program and a new support for the machine database.

In our example we shall describe a thread chasing process on a DECO 2000 cap. 20 mm using tool T34.

1. Creating the following operating line:

Note: the master axis 1 must be Z1

2. Creating a new support (39) in the machine database

Creating a new support, the feature of which would be to have axis X3 as the X-reference axis and axis Z1 as the Z-reference axis. The standard supports, T31 to T34, have X3 and Z3 as their reference axes. The support number would be 39. To set up this new support, the Edit_bd application must be used and the following instructions followed.

Open the database. Select the support field, right click the mouse. The context menu "add registration" appears. Click. A new support is created and added to the end of the list. Select this support and change the values as follows:

Note:
The value of the OffsetX field must be the same as that of support 34 of the database
(in our example: 270)
As the axis Z identifier (AxisZID) is Z1, the value will be 5

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