The Machining Order Dialog Box

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Introduction

The Machining Order dialog box allows you to specify how the tool changes in the program are optimized. The machining order can be optimized by Individual Feature, Individual Tool Per Machine Setup or Individual Tool.

Navigation

To access the Machining Order dialog box, do one of the following:

 

 

The Machining Order Parameters

View the Machining Order dialog box

 

In order to fully understand the Machining Order, there are some terms that must be clarified. All milling features are inserted in the CAMTabIconBBCD.png CAM tree, in a MachineSetupIcon.png Machine Setup. The Machine Setup defines the machining origin for all features contained in the Machine Setup. Any part can have multiple Machine Setups with multiple features in each. Each milling feature is used to define and create toolpaths for a specific purpose, such as a Hole feature. The feature is performed using one or more operations. For example, a Hole feature is composed of a Center Drill operation, a Drill operation, and an optional Chamfer operation. In conclusion, a part can have multiple Machine Setups, which can contain one or more features, which contain one or more operations.

 

Individual Tool

When selecting Individual Tool, the Machining Order is optimized by completing all possible operations with each tool before changing the tool and moving on to the next operation. This is done across all features to reduce the number of tool changes. This method is useful, for example, when drilling operations of different sizes are performed with multiple drilling features. All center drill holes are drilled before changing the tool. Then all drill holes of the same size are drilled before the next tool change. This process is repeated until all features are completed.

 

Individual Feature

When selecting Individual Feature, all operations are performed for each feature before moving on to the next feature. This method does complete all possible operations with each tool before making a tool change as in Individual Tool, but it does not complete similar operations with the same tool across multiple features. This method is useful when one feature operation must remove stock material before the next feature operation can start.

 

Individual Tool Per Machine Setup

When selecting Individual Tool Per Machine Setup, the Machining Order is optimized in a manner similar to Individual Tool. The difference is that each possible operation for each tool is performed, before a tool change, across all features contained in a Machine Setup group. This method is useful when using a different Machine Setup for each side of a part.

Example

In this example, two Tap features are inserted in the CAM tree. Even though each Tap feature is a different size, the center drill and chamfer tools used for each are the same size. The operations of each feature are shown next:

 

Features

 

Tap Feature 1 Operations:

 

  1. Center Drill 1
  2. Drill 1
  3. Chamfer 1
  4. Tap 1

 

Tap Feature 2 Operations:

 

  1. Center Drill 2
  2. Drill 2
  3. Chamfer 2
  4. Tap 2

 

 

Individual Feature

 

The order of operations when using Individual Feature:

 

  1. Center Drill 1

  2. Drill 1

  3. Chamfer 1

  4. Tap 1

  5. Center Drill 2

  6. Drill 2

  7. Chamfer 2

  8. Tap 2

 

Notice that the order is the same as the Tap Feature 1 and Tap Feature 2 operations combined.

 

 

Individual Tool

 

The order of operations when using Individual Tool:

 

  1. Center Drill 1 and 2

  2. Drill 1

  3. Chamfer 1

  4. Tap 1

  5. Drill 2

  6. Chamfer 2

  7. Tap 2

 

You can see that for Individual Tool, the Center Drill operations for each feature are performed together. Notice in step 3 that even though the chamfer tool is the same size for each feature, both chamfers can't be performed at the same time because Drill 2 has not yet been performed. The reason that both Drill operations are not completed before the Chamfer operations is that the original order of operations, shown in Tap Feature 1 and Tap Feature 2, is still followed.

 

 

Individual Tool Per Machine Setup

 

The following lists show the same Tap Feature 1 and Tap Feature 2 in one Machine Setup, and then Tap Feature 3 is added in a separate Machine Setup.

 

Machine Setup 1

 

Tap Feature 1 Operations:

 

  1. Center Drill 1
  2. Drill 1
  3. Chamfer 1
  4. Tap 1

 

Tap Feature 2 Operations:

 

  1. Center Drill 2
  2. Drill 2
  3. Chamfer 2
  4. Tap 2

 

Machine Setup 2

 

Tap Feature 3 Operations:

 

  1. Center Drill 3
  2. Drill 3
  3. Chamfer 3
  4. Tap 3

 

The order of operation for Individual Tool Per Machine Setup:

 

  1. Center Drill 1 and 2

  2. Drill 1

  3. Chamfer 1

  4. Tap 1

  5. Drill 2

  6. Chamfer 2

  7. Tap 2

  8. Center Drill 3

  9. Drill 3

  10. Chamfer 3

  11. Tap 3

 

Notice that the order of operations is optimized like Individual Tool, within each Machine Setup. The operations of one Machine Setup are completed before moving on to the next Machine Setup.

 


TIP: The order of operations that can be edited are defined in the Tool Pattern Global and Tool Pattern Program dialog boxes.


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