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ANCA Software Tips - RN31 Volume 1

 

ANCA is renowned the world over for the flexibility of our tool grinding software.  Here we introduce you to some of our latest software features that help you grind exactly what you want.

Complex Parameters

Toolroom version RN28.1 introduced the concept of complex parameters and later releases added this ability to additional parameters. A complex parameter is one that you can optionally vary along the length it is applied to, instead of being restricted to just a constant value. Parameters with this ability have a Sigma “Σ” symbol next to their input field as shown below.

Setting up complex parameters using ANCA’s tool grinding software
Setting up complex parameters using
ANCA’s tool grinding software


Clicking on the Σ symbol displays a dialog box which allows complex specification of the parameter (similar to using ANCA’s Variable Helix Wizard). For example, instead of a constant Primary OD Land Width, this can be specified as;

 1. A changing width from EOT to Shank.
 2. A constant width followed by a transition to a different width and then constant again.
 3. Arbitrarily as a spline function.

The image below shows the primary land width specified as an oscillating spline function. The result can be seen on the tool. This ability is also available for some of the feedrate parameters in fluting cycles which can be useful when grinding complex tools.

Using complex parameters to set up sinusoidal land width variations
Using complex parameters to set up sinusoidal land width variations

Fixed Point Ballnose Grinding

RN31 introduces many enhancements to the Ballnose OD and Ball finish cycle such as the ability to grind an eccentric OD and a facet ball in one continuous move. Another important development is the introduction of a Fixed Grind Point option. This option performs the ballnose OD grinding move as a 5-axis move, however it ensures that the same point of the grinding wheel is used throughout the move. Using the same grinding point on the wheel means that variations in the ball profile do not occur as a result of using different points about the toroid radius of the wheel. Using the Fixed Point Grinding method, the wheel will wear in one spot only resulting in simpler compensations and a more stable grinding process.

 Setup for fixed grind point ball nose grinding
Setup for fixed grind point ball nose grinding

Shift a Complete Set of Files to Another Machine

Creating bundle files in RN31 simplifies the process of transferring files from one machine or simulator to another. Bundle files include the iGrind TOM file, wheel packs, dressing files, and any other file associated with the current tool. The Create Bundle option can be found under the FILE menu in RN31 within iGrind. Once transferred to a machine, the files are easily installed by using the Install Bundle option (from the FILE menu). To minimize the size of bundle files when transferring them to other machines or simulators, deselect the option to include debug files.

Creating a file bundle to transfer to another tool grinder 
Creating a file bundle to transfer to another tool grinder

Comparing Tools in CIM3D

Cim3D has the ability to compare two tools at the same time. The method to do this is;

 1. Simulate a tool and then save it as a VRML file. I.e. FILE->SAVE-> VRML File (.WRL)
 2. Make a change to the tool and simulate again.
 3. To compare the old and new tools go to FILE->OPEN and open the saved VRML file.

The two models should be shown side by side in Cim3D. Double clicking on the VRML model will display a menu with an “edit position” option. This can be used to move the position of the model and can even be used to lay one model on top of the other to further check for differences. Turning on the Cutting Edges option and changing colour mapping can also help in comparing differences in models.

Comparing two tools with different gashes using ANCA’s CIMulator 3D 
Comparing two tools with different gashes using ANCA’s CIMulator 3D

If you haven’t upgraded to RN31 yet, then maybe now is the time to take advantage of ANCA’s continual commitment to advancing the state of the art in software flexibility so that you can grind what you want.  Full details of RN31 features can be found at the ANCA Club (www.anca-club.com).  If you are an ANCA customer but don’t yet have access to the ANCA Club please email marketing@anca.com and we’ll set you up.

Download the RN31 Software Brochure Now»

First published in The Sharp E Newsletter, July, 2010

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