If the contour ended on an arc then a tangent linear move must be calculated by the software. If this move is not tangent an incremental offset error may accumulate. The programmer can manually check each intersection and insert a fillet radius if necessary. The better method would be if the CAM system offered a method of automatically checking and inserting a specified size fillet radius. If a different size could be given for inside and outside corners it would be best.
Whatever method is used the software should warn of any nontangent intersections. If inside corner radii smaller than the largest offset are necessary the programmer can develop different geometry with larger radii for the cuts with larger offsets. This is only possible with offline technology. The system should alert the programmer to the problem.
If possible the system should automatically modify the inside corner radii so that they are 5 microns larger than the programmed offset. The better method would be to use the Job file because if the Technology file is altered it will remain that way until changed back. This can cause a problem on another part using the same file but not requiring negative offsets. If the system automatically creates the Job file then the negative offset should be set appropriately.
The system could also call each cut individually from the Job file thus eliminating the need for the negative offsets. Very few systems offer this technique. If the Job file is not automatically created it will be up to the operator to verify which offsets need to be negative and properly set them.
If an offline system is only going to create the geometry file most common all of these requirements should be addressed. The CNC uses the. JOB file to set many of the features that on other machines are set by manual data input. If the programming system does not create a Job file then the operator can create one manually at the control using the editor. The Job file is used to set the following parameters:. Positioning moves if not programmed in the. GEO file.
Fast positioning can only be programmed in the Job file. Z axis positioning can only be programmed in the Job file. If a system does not create a Job file then in most cases a single geometry file is created which eliminates the possibility of multiple technology files, multiple Z heights, fast positioning, and Z axis positioning. Although these features are not necessary in many cases they do allow more flexibility in achieving the maximum potential from your machine tool.
If you choose a CAM system without Job file capability you will greatly increase the chance for human errors. GEO file with several major differences. It can be programmed in absolute. It can use decimal places. No reversal of entry and first contour moves, actually no entry or exit moves at all.
No dummy blocks. Tangency is not necessary. In addition these files can be programmed with greatly increased decimal accuracy eliminating many of the rounding errors. The script file is the most significant file type associated with the AgieVision. It has all of the capabilities of Job file and many more. A few of the functions are listed below. If the script file is not generated by the offline system these functions can be set at the machine using the part editor.
These files can then be read individually from a floppy disk and they can be manually integrated into the part using the part editor. There are many other features of the script file not mentioned here. Only the most common have been listed to lessen confusion.
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Login to Your Account. Remember Me? Register Forgot password? What's New? Likes: 1 Post 1. Page 1 of 2 1 2 Last Jump to page: Results 1 to 20 of Thread Tools Show Printable Version. Any suggestions would be helpful, thankyou punch is too small to hold it with a magnet or stick shims or cardboard down the side btw.
When you select this option, it asked where you wan to add the stop, select the point on the profile and then an option box appears, then select the cuts you want to apply this to. Thought there was also somewhere on the control you could add a stop but can't find it at this min. Thanks alot Matt, you have helped a great deal. You're welcome, I assumed the peps method worked?
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