Tech Tuesday is a weekly blog that addresses some of the most common questions and concerns that I hear throughout the previous week from users of BobCAD’s CNC software. Both customers and future customers are more than welcome to leave a comment on what they would like to see covered for the following Tech Tuesday.
A new feature in V33 is the Corner Slowdown option in our Advanced Feedrate page. This new feature will allow users to break their toolpath into smaller segments and reduce the feedrate in the corners of the toolpath. BobCAD users have many different options in this feature. You have the option to apply this feature in external corners only, internal corners only, or all corners. You can apply a specific minimum angle and maximum angle, a certain distance from the corner, and a desired feedrate percentage.
The minimum angle option determines the minimum angle change difference between two entities to determine whether they should be handled as a corner.
The maximum angle option determines the maximum angle change difference between two entities to determine whether they should be handled as a corner.
The distance from corner option is the distance from the detected corner at which the entity will be broken, and the slower feed rate applied.
Feedrate percentage is the percentage of the cutting feedrate to be applied to the portions that will be slowed down.
The Corner Slowdown option is available in many operations now including pocket, profile, engraving, chamfer, and corner rounding. You can cut your feedrate to a specified percentage when you approach corners. Many variables need to be taken into consideration, especially ensuring the tool does not engage too much material at the same time. Having the tool engaged in the material too much can easily break a tool. When moving around a part, additional stock is always encountered in the corners.
Notice how much additional material this tool engages in the corner. While you want to remove material as quickly as possible, scenarios like this have to be accounted for, and until now, that meant having to slow the speed on the rest of the path as well. Now, with the new Corner Slowdown feature, simply specify how close to get before the corner, and the percentage to slow the feedrate down to and you’re done! The toolpath is broken and the feedrate is reduced by the specified percentage.
This feature will even allow you to divide the specified distance into a number of segments so the feedrate gradually drops to the specified feedrate percentage! Now, you can finally set your speeds as fast as you can, and focus on slowing down the toolpath in the corners when absolutely necessary. Download a demo of V33 today and try out the new corner slowdown feature!
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