Use the Right Feeds and Speeds:
Using the recommended feeds and speeds for machining is one of the most vital aspects in getting the desired finish. In order to achieve a uniform surface finish, the CNC router must be set to the prescribed feed and speed parameters based on the material being machined. Use our calculator, https://cncrouterstore.ca/feed-rate-calculator/ to get the right feeds and speeds for your next CNC project.
Adopt Lighter Cuts on Finishing Passes:
Sometimes it’s difficult to machine a workpiece in a single pass either because the resulting parts are too small are are likely to move, the suction on your vacuum table is not strong enough to hold your parts for one pass or because you’re not achieving the desired finish without having to take an additional pass. If you find yourself in this situation where you’re unable to cut in one pass to get the desired finish, it is recommended to machine the work piece in multiple passes. When cutting in multiple passes, it’s recommended that the first set of cuts are as deep as the cutting bit will permit, leaving the final finish pass with a smaller load, thereby reducing the cutting force and ultimately resulting in a much-improved finish.
Clear the Chips:
Failure to remove chips from the work surface will result in workpiece being scratched, as cutting bits will slide the chips along the finished surface. This is pronounced when cutting metals. Furthermore, re-cutting chips can cause a lot of router bit damage. To avoid these issues and arrive at a better finish, it is recommended to use a vacuum chip collection system that is powerful enough to clear chips of all sizes or to pay attention to clearing chips by air blasting them before completing another pass. All MultiCam CNC routers are equipped with chip collection system. To learn more about chip collection, take a look at https://multicam.ca/chip-load-and-chip-removal/.
Minimize Tool Deflection and Chatter:
Due to the mechanics of CNC router heads and cutting bits, it’s impossible to eliminate deflection and chatter completely, however it is vital that the right tool holder and tools are being used to prevent deflection while machining parts on the CNC router. You should also confirm that the cutting parameters, speeds and feeds are within the recommended ranges. As for chatter, securely fastening the cutting bits in the collet and ensuring the workpiece is secured in place via suction or clamps will substantially reduce the possibility of your bits and working piece moving during machining. Not only will this tip improve the quality of your finishes, but it will also add to the longevity of your CNC router.
Thinking about investing in a new CNC router? Visit multicam.ca today to view our router product line.