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Posted on Sep 22, 2020
In CNC lathes and turning centers, in order to improve accuracy, it is important to consider different manufacturing processes, such as burrs, extrusion direction, fluctuations in caliper readings, positioning pins for turning, and so on. No shop owner or CNC lathe operator wants to see parts damage and scrap at the end of CNC lathe machining.
Although the combination of the right technology and the right tools can complete the job on time, other variables should be considered before reaching the finishing stage. In this article we share some tips and tricks with you on how to get the best CNC lathe machining finishes.
Before the actual machining process, you need to design the workpiece. Here, you can lay the foundation for efficient CNC lathe machining. Here are some basic design tips.
Setting fine serrated upper jaws in a CNC lathe power chuck is a common challenge. The 1mm serration can easily extract a tooth and center it on the blank. In addition, it is difficult to measure the three jaws and set them in the middle of the jaw stroke. I made a special label with basic dimensions engraved on it, so I can quickly set the jaws within the diameter range and hit all the serrations with the same radius. It cost just five dollars and spent a little time carving on the mill. Make sure to thoroughly clean the jaws where these labels are applied before performing your CNC lathe machining job. When reinstalling the upper jaw, get in the habit of removing fine serrations from the jaw with a scraper.
When spinning tricky plastics, try to turn off the constant cutting speed. Manually controlling the cutting speed can better control the filamentary chips. CNC lathes chip control can be a significant barrier to the unattended manufacturing of some types of plastics. By slowing down the spindle speed or increasing the feed rate to thicken the chips, you will raise the chip load. Often even basic tasks such as turning off the coolant will help to monitor the chips during CNC lathe machining.
:: Read more : The Secrets of efficient CNC Lathe Machining revealed here
Sometimes, when the manufacturer does not provide a flat surface on the tool, it is difficult to align the boring bar with the axis and centerline of the machine tool. To solve this problem, face the end of the setting bar and dim it with a marker. Then use a turning tool to draw a tenth or two deep lines along the turret axis. This line is located very accurately in the center and is angularly aligned with the X axis of the turret. It allows you to twist the boring strips into a ball, and there is something to make the cutting edges line up neatly. You can use a mirror to align the tool upside down with the specified centerline. This will improve your CNC lathe machining efficency.
After setting up and using the tool, do yourself a favor: at least report the X-axis offset on the storage tube, or directly on the instrument, when extracting the instrument from the lathe. The next time you use the app, this will speed up the tool's initialization. The offset is not perfect, but it can be compensated very closely.
For all external boring tools, add a backstop screw that rests on the turret. If the bracket is taken out of the machine, this will allow me to maintain an accurate X offset during CNC lathe machining. In the next setup of the tool, keep the X offset.
For tie rod operations during CNC lathe machining, it is best to make the spindle bushing close to your original size. I made a single-spindle bushing, which fell into the headstock. They use common off-the-shelf pipes and pipe sizes. Next time your cutting order is less than the minimum cutting order, let the water jet or laser cutting machine pull out a bunch of blank discs. Throw them on the shelf and the next time you need a special liner diameter, half of the work has been done. Break a piece of test tube into shape and weld the disc.After a few quick welds, you have a cheap spindle bushing that can meet the needs of the strange ball size you need to run.
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