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Machining Preferences gibbscam

The Machining Preferences tab contains several settings for the system’s behavior when generating toolpath.

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Spline Machining Tolerance

This item is a curve accuracy. It is used when working with splines. When splines are machined, the toolpath breaks up the spline into line segments that can be cut by the CNC machine. The Spline Machining Tolerance specifies how much the line-segmented toolpath can deviate from the true spline.

Entry Line Approach

This provides an option for the toolpath generated when using a line and 90° radius value for the entry and exit of a finish pass in Pocketing and Contouring operations. Tangent Entry Line to Arc will create a line tangent to a 90° radius while Normal Entry Line to Arc will create a line that is perpendicular to the 90° arc. This is illustrated below. Normal Entry Line to Arc is particularly useful when CRC Type is set to Tool Edge. This will help to ensure that the code generated by the system will not inadvertently cause a tool to crash into a part in certain circumstances, such as when the tool is nearly as large as the pocket being machined. When using this option, please be sure to set the line length to be equal to or greater than the tool radius.

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The system does a much better job offsetting the tool than the majority of controls currently available. Regardless of the setting made in this preference, all toolpath drawing and Cut Part Rendering will be calculated and displayed using the system’s offsetting mechanism. Therefore, it is possible for the rendered image produced by the system to look good, while the tool, cutting according to the posted code, will not cut well. If the control’s offsetting mechanism is less advanced than the system’s, it is possible that when the control produces the offset values, errors and interference will result.

CRC Type

This option allows you to set the default behavior of Cutter Radius Compensation in Contour and Thread milling operations. The CRC Type options include Tool Center, Tool Edge and Finish Profile. The toolpath displayed on-screen will not change with each selection, but the posted output will vary according to your selected preference. Additionally, if you convert an operation’s toolpath to geometry, the resulting geometry will be reflective of the CRC Type used.

Tool Center

This is the default setting. The toolpath is rendered on-screen this way regardless of which CRC type option is selected. With this option the toolpath is calculated to the center of the tool including any stock settings.

Tool Edge

With this option the toolpath is calculated to the edge of the tool including any stock settings. CRC offset settings on the control should be set to the tool size.

You cannot enter negative line lengths in Tool Edge CRC approach/exits. This means there is no way to have an arc only approach. With tool center you simply set the line length to “0”. With tool edge you have to enter line length equal to -tool radius.

Finish Profile

With this option the toolpath is calculated to the finish geometry of the part and does not include stock. The G-code output is essentially a blueprint of your part. CRC offset settings on the control should be the tool size, plus any stock allowance. This option supports Rough Bore, Finish Bore, Contouring and Offset Pocketing operations. For pocketing and rough bore operations the Cut Width must be greater than the tool diameter otherwise tool center is output in the code. This option is meant to be used as a finish pass.

What exactly is meant by arc radius and line length in CRC? The arc radius is to tool centerline for all CRC types. Line length is the distance you want the tool edge to start away from the geometry start point.

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The system does a much better job offsetting the tool than the majority of controls currently available. Regardless of the setting made in this preference, all toolpath drawing and Cut Part Rendering will be calculated and displayed using the system’s offsetting mechanism. Therefore, it is possible for the rendered image produced by the system to look good, while the tool, cutting according to the posted code, will not cut well. If the control’s offsetting mechanism is less advanced than the system’s, it is possible that when the control produces the offset values, errors and interference will result.

CRC Type

This option allows you to set the default behavior of Cutter Radius Compensation in Contour and Thread milling operations. The CRC Type options include Tool Center, Tool Edge and Finish Profile. The toolpath displayed on-screen will not change with each selection, but the posted output will vary according to your selected preference. Additionally, if you convert an operation’s toolpath to geometry, the resulting geometry will be reflective of the CRC Type used.

Tool Center

This is the default setting. The toolpath is rendered on-screen this way regardless of which CRC type option is selected. With this option the toolpath is calculated to the center of the tool including any stock settings.

Tool Edge

With this option the toolpath is calculated to the edge of the tool including any stock settings. CRC offset settings on the control should be set to the tool size.

You cannot enter negative line lengths in Tool Edge CRC approach/exits. This means there is no way to have an arc only approach. With tool center you simply set the line length to “0”. With tool edge you have to enter line length equal to -tool radius.

Finish Profile

With this option the toolpath is calculated to the finish geometry of the part and does not include stock. The G-code output is essentially a blueprint of your part. CRC offset settings on the control should be the tool size, plus any stock allowance. This option supports Rough Bore, Finish Bore, Contouring and Offset Pocketing operations. For pocketing and rough bore operations the Cut Width must be greater than the tool diameter otherwise tool center is output in the code. This option is meant to be used as a finish pass.

What exactly is meant by arc radius and line length in CRC? The arc radius is to tool centerline for all CRC types. Line length is the distance you want the tool edge to start away from the geometry start point.

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The system does a much better job offsetting the tool than the majority of controls currently available. Regardless of the setting made in this preference, all toolpath drawing and Cut Part Rendering will be calculated and displayed using the system’s offsetting mechanism. Therefore, it is possible for the rendered image produced by the system to look good, while the tool, cutting according to the posted code, will not cut well. If the control’s offsetting mechanism is less advanced than the system’s, it is possible that when the control produces the offset values, errors and interference will result.

CRC Type

This option allows you to set the default behavior of Cutter Radius Compensation in Contour and Thread milling operations. The CRC Type options include Tool Center, Tool Edge and Finish Profile. The toolpath displayed on-screen will not change with each selection, but the posted output will vary according to your selected preference. Additionally, if you convert an operation’s toolpath to geometry, the resulting geometry will be reflective of the CRC Type used.

Tool Center

This is the default setting. The toolpath is rendered on-screen this way regardless of which CRC type option is selected. With this option the toolpath is calculated to the center of the tool including any stock settings.

Tool Edge

With this option the toolpath is calculated to the edge of the tool including any stock settings. CRC offset settings on the control should be set to the tool size.

You cannot enter negative line lengths in Tool Edge CRC approach/exits. This means there is no way to have an arc only approach. With tool center you simply set the line length to “0”. With tool edge you have to enter line length equal to -tool radius.

Finish Profile

With this option the toolpath is calculated to the finish geometry of the part and does not include stock. The G-code output is essentially a blueprint of your part. CRC offset settings on the control should be the tool size, plus any stock allowance. This option supports Rough Bore, Finish Bore, Contouring and Offset Pocketing operations. For pocketing and rough bore operations the Cut Width must be greater than the tool diameter otherwise tool center is output in the code. This option is meant to be used as a finish pass.

What exactly is meant by arc radius and line length in CRC? The arc radius is to tool centerline for all CRC types. Line length is the distance you want the tool edge to start away from the geometry start point.

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The system does a much better job offsetting the tool than the majority of controls currently available. Regardless of the setting made in this preference, all toolpath drawing and Cut Part Rendering will be calculated and displayed using the system’s offsetting mechanism. Therefore, it is possible for the rendered image produced by the system to look good, while the tool, cutting according to the posted code, will not cut well. If the control’s offsetting mechanism is less advanced than the system’s, it is possible that when the control produces the offset values, errors and interference will result.

CRC Type

This option allows you to set the default behavior of Cutter Radius Compensation in Contour and Thread milling operations. The CRC Type options include Tool Center, Tool Edge and Finish Profile. The toolpath displayed on-screen will not change with each selection, but the posted output will vary according to your selected preference. Additionally, if you convert an operation’s toolpath to geometry, the resulting geometry will be reflective of the CRC Type used.

Tool Center

This is the default setting. The toolpath is rendered on-screen this way regardless of which CRC type option is selected. With this option the toolpath is calculated to the center of the tool including any stock settings.

Tool Edge

With this option the toolpath is calculated to the edge of the tool including any stock settings. CRC offset settings on the control should be set to the tool size.

You cannot enter negative line lengths in Tool Edge CRC approach/exits. This means there is no way to have an arc only approach. With tool center you simply set the line length to “0”. With tool edge you have to enter line length equal to -tool radius.

Finish Profile

With this option the toolpath is calculated to the finish geometry of the part and does not include stock. The G-code output is essentially a blueprint of your part. CRC offset settings on the control should be the tool size, plus any stock allowance. This option supports Rough Bore, Finish Bore, Contouring and Offset Pocketing operations. For pocketing and rough bore operations the Cut Width must be greater than the tool diameter otherwise tool center is output in the code. This option is meant to be used as a finish pass.

What exactly is meant by arc radius and line length in CRC? The arc radius is to tool centerline for all CRC types. Line length is the distance you want the tool edge to start away from the geometry start point.

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Allow Mill Material Only

The Allow Mill Material Only checkbox must be checked for the Material Only machining option to be available in Roughing Process dialogs. When the item is checked, the system tracks and stores remaining material conditions. If the Material Only option is not going to be used in operations it is strongly recommended that this option be deselected.

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When this preference is on, the system will perform the calculations needed for a Material Only operation even if the calculations will not be applied. This information will also be saved with the part file. Though the difference in the size of the part file is quite small, the additional processing power that can be gained by turning this option off when not used is significant.

Use Spun Outline for Lathe Profile

Using this option will create a spun outline of a solid for lathe profiles, resulting in a maximum material condition. If this item is off the system takes the profile of a solid as it lays in the ZX plane to determine the profile. If a solid has a boss or other element that does not lay on the ZX plane it will not be noticed.

Holder Class Menu Items

This item allows you to select which mill holders show up in the Document Control dialog. Most users will not have all classes of back ends available so this item helps you minimize an otherwise long list of items.

Hole Wizard

The Hole Wizard section contains buttons to access the preferences for Hole Data. These preference settings control the behavior of the Hole Wizard. In addition a predefined list of bolts and tap definitions can be accessed here. The Bolt Table and Tap Table dialogs are spreadsheets that contains standard data and user entered definitions of bolts and tap holes. These items are fully described in the Wizards Guide.

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