Creation of a User Hole Model

To create a User hole, open the Users Holes Management command.

A window will open and any existing models will be available on the screen. You can choose between the Standard and Specific families.

To create a new model, click on Creation in the bottom right.

The creation of a model is done in 3 stages:

1. Definition of the general shape of the hole

2. Definition of the dimensional parameters of the hole, stage by stage

3. Definition of the operation list.

Here is the dialog box which enables to define the shape of the hole.

The left column gathers the general characteristics of the hole. These information will influence the search of a good model during their application, it is important that these parameters are well defined.

On the right, you find the definition of the shape for each stage. We accede to each stage page by clicking the number on the top of the dialogue, or directly on the image.

Type of hole:

Firstly, choose the type: blind or through.

Bottom Type:

 If it is a blind hole, determine if the bottom is conical or flat.

Definition of the number of stages

Superior stages refer to levels above the holes.

Inferior stages correspond to levels below the holes.

Two important points to consider:

1. When dealing with a blind hole, it is not feasible to define an “inferior” stage.

2. For inferior stages, machining occurs using back machining cycles. This approach avoids having two holes in the same axis with opposite Z directions.

Long Hole Models: sort criteria for the hole’s recognition.

By selecting this option, you authorize GO2cam to present this model for a hole that is categorized as “long” during the recognition process.

Reminder : during recognition, you have the ability to establish criteria for identifying long holes by specifying the length-to-diameter ratio. The default value for this ratio is 7, which implies that a hole will be classified as long if its length exceeds seven times its diameter.

Quality of the Stages

The stages can have three different qualities: smooth, counter-bored, and tapped. If a hole requires reaming, it falls under the ‘smooth’ category.

Chamfers and fillets

In this context, GO2cam provides the option to create either a chamfer or a fillet, depending on technological feasibility. You can select the appropriate option by checking the corresponding boxes.

After determining the shape of the hole, proceed to the next step.

Model Types: At this critical juncture, the user must decide on the type of model they wish to create:

• A forced model (via manual or standard input): This type of model may be used immediately in geometry without the need to fill in any parameters, but it also implies that you have built many hole models with various values for the same form. In solid recognition, the values must match in addition to the shape that is recognized on the solid having the same form.

• A free model that allows you to generate a single model by form; however, utilizing it in geometry requires you to fill in the data for each creation. However, with solid recognition, the model can be utilized even if the model's form is the sole similarity.

On the left, there are 2 criteria relative to the use of models in solid recognition:

•  Mini / maxi diameters: you define for each range of diameters values this model can be used.

•  Mini / maxi qualities: definition of the qualities range of the model.

The right side of the dialogue box is completely dedicated to the dimensional definition of the stage.

The first line specifies the number of stage and its type. If it’s a tapping or a counter-bored hole, you can access the “Standard value” field. Enter the required value for “Mx,” and the corresponding standard values will automatically populate the fields below.

This dialog box remains consistent across all types of holes. If an option has not been selected, it is simply unavailable.

First, you need to specify the diameter(s) and height(s) of the stage. Next, define the tapping pitch.

Finally, you’ll receive the parameters related to the technological options for the stage:

• Chamfer

• Fillet

• End chamfer."

The parameter is validated

An input of a value has to be done

An input of a formula (or value) has to be done

After defining the stages, click “Next” to access the page where you can define the operation list. Regardless of the hole model defined, GO2cam generates a default operation list that you can either validate or modify.

For more information about the list of operations: manage and modify the List of Operations.

After completing all the necessary steps, remember to save your model. Provide it with a descriptive name and select a family category that will help you organize and locate your models easily whenever you need to apply them.

The creation of a new family is done at that moment.

Simply enter a new name in the field ‘Family’

Choose a model in the library of user’s models, then click on Modify.

When accessing the Operations List associated with a model, you gain access to all the cycles and tools to be used. The functionalities available during the initial creation can also be utilized for modification purposes:

• Deactivate cycles and/or tools.

• Change the cycle type and switch tools.

• Insert or add new operations, delete existing ones.

• Modify dimensional parameters.

• Define formulas that constrain parameters or specify conditions for cycle execution.

Additionally, by clicking on ‘Previous’ in the bottom left corner of the dialogue box, you can access the pages for defining dimensional and topological parameters.

There are two primary reasons to use model modification:

1. Adjustment: When a model has multiple defined stages and formulas, it is rare for it to be correct on the first attempt. The ability to modify and fine-tune the model is crucial for achieving the desired results.

2. Base for New Models: Each existing model can serve as a foundation for creating a new one. Using the ‘Modify’ function, you can access all types of parameters—topological, dimensional, and technological—to create a new model simply by providing a name.