外文翻译---后处理构造器说明书

外文翻译

Post Builder Help

Getting Started

Post Builder creates and edits postprocessors. These postprocessors have three elements, each identified by the base name and one of three extensions. Assuming your postprocessor name is my_machine_tool, these files would be the following:

By default, Post Builder creates your postprocessor in the directory where you started Post Builder. Use the Save As option in the file dialog to save your postprocessor in the directory of your choice. In order to use your postprocessor in NX you must add an entry to your template_post.dat file in your current postprocessor directory.

Post Builder supports English dialogs only.

Procedures in the Base File

NX Post depends heavily on procedures in the ugpost_base.tcl file. This file is located in the mach/postprocessor directory. The system uses it to support the file I/O and other basic functions. This is updated with each NX release, and should not be modified. It is possible to overwrite procedures in this file through tcl programming, but this is not recommended. You can overwrite these procedures with a user created tcl file or by using the uplevel feature of tcl. When any of the procedures in ugpost_base.tcl are overwritten by the procedures in the postprocessor we no longer guarantee that the post will continue to work correctly from one release to the next. Some of the critical files that may cause problems when modified are:

Creating a New Post

To create a post follow the steps below:

1.Select the New File icon or select New in the file drop down menu.

You have the following choices from the Create New Postprocessor

dialog:

2.You can select the name of your postprocessor or use the default

name. You can change this name when saving.

3.You can enter a text description of your postprocessor.

4.Specify whether the system outputs in inch or metric. If you select

inch, all coordinate output and formats are in inches. If you

specify metric, all coordinate output is in millimeters. All of the default parameters such as tolerances, minimums and maximums are based upon the output units. See the section on Changing

Postprocessor Kinematics for how to change from inch to metric or metric to inch after you have created the post.

5. Select a basic machine type. Once you have selected the machine type

you can not change it again for this postprocessor. Your choices are explained in the following sections: Mill, Lathe, Wire EDM. Mill

Selecting this option defines your machine as a mill type. The following mill types are available:

Lathe

Selecting this option defines your machine as a lathe type. Typically lathes have two linear axes (Cartesian X and Z). The chuck rotates and the tool remains in a turret that moves in the X and Z-axis. In the machine section you can also specify your post as a four axis lathe with a fixed distance between the turrets.

Wire EDM

Select this option to create or edit a Wire EDM postprocessor. The system provides posts for three common wire EDM machine tools: Agie, Mitsubishi, and Charmilles. They contain all the G and M codes used to control standard Wire EDM functions. They also contain the basic two and four axis motion.

Controller

You must now select a basic controller type. You can choose a generic controller, a specific controller from the controller library, or a post you have previously created. The specific controllers have nurbs output for the Fanuc, Siemens and Heidenhain mill controls. The choice of controllers is difficult for mill, lathe, or wire edm machine tools. After making all your selections the system uses all the information you have selected to create your post.

Changing Postprocessor Kinematics

You can start with any existing postprocessor created with Post Builder and change the kinematics or the inch/metric setting through the following process:

1.Make a new post.

2.Select the new inch or metric setting.

3.Select the new kinematics setting.

4.Select the user option on the controller to browse for the post you

want to change.

5.Create the post.

Your new post now has all of the custom commands and edits from your original post, but with new kinematics and/or inch/metric settings. You may need to add rotary words to the motion blocks when making a four or five axis post from a three axis post. To do this follow the steps below:

1.Go to Program & Too l Path→Program→Motion. In this dialog you may

need to change the Linear Move and Rapid Move blocks. To do this,

follow the steps below:

a.Click on the Linear Move, or Rapid Move blue event marker.

b.In the dialog that displays, select the down arrow next to

the drop down menu.

c.From the drop down menu select fourth_axis.

d.Click and hold the Add Word button until a block displays.

e.Drag the block over the block until a white outline appears,

than release the mouse.

If you have a four axis post you may only need to add the fourth_axis word. If you have a five axis post you may need to add both the fourth_axis and fifth_axis.

2.Go to Pr ogram & Tool Path→Program→Canned Cycles and select the

Common Parameters event marker. Add the fourth_axis word in the same manner as the Linear and Rapid Move event markers. Options

Validate Custom Commands

You can turn on or turn off error checking while importing or creating custom commands:

This is a very useful feature that prevents many run-time errors that are much more difficult to debug in a run-time situation. If you select the dotted line you can create a detached dialog.

Back Up Post

This preference allows you to define how the system creates backup versions of Post Builder files. You have the following choices:

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