Skills to improve the productivity of CNC stamping!

How to optimize the output and quality of CNC punch:

Tip 1: Focus on the sequence of process and tool selection. Many programming software products on the market have mechanical optimizers, but not every shop floor will utilize them. There are two basic programming methods: First, to punch a single part out of a sheet metal material in order to punch numerous parts out of it. This makes the initial screening, which is normally not easy to do, much easier.

The second programming method can flush out the optimal tool route of the whole part on the whole sheet metal piece. The best practice is to use these two programming methods to switch to an optimization solution when the maker does the first piece inspection to flush parts off the sheet metal as rapidly and effectively as possible, thereby minimizing changes in the tools needed.

Precision and dimensional tolerance are entirely different measures.
In order to optimize the accuracy of CNC stamping machine, the last few stamping points are crucial. In the stamping of the entire Custom Sheet Metal Fabrication, the parts and the whole piece should be separated, and the last few stamping points should be laid on the longest parts. This will maximize the firmness of the integrated sheet metal. Running the tool horizontally on top of the sheet metal piece toward the fixture helps assure optimal stiffness throughout the sheet metal piece during stamping.”
Shortening tool path
Most manufacturers recognize the potential advantages of collinear stamping — utilizing a stamping tool that allows you to create both the right side of one part and the left side of another, thus enhancing material efficiency, while making more parts from one sheet metal sheet.
Collinear stamping across multiple products not only improves material utilization, but also optimizes tool paths by removing gaps between parts that would otherwise be 1/2 inch or broader in width, decreasing tool paths, and reducing the number of impact points per part, so enhancing tool life.”
The stiffness of sheet metal is not sufficient, which is a common problem for metal makers using collinear stamping. ​Consequently, it is essential to develop a scheme to execute the longest travel impact in the last part of the machine operation, and always travel in the direction of the fixture.

When using collinear stamping small parts (such as 6 x 6 inches or smaller), they can be nested in the large sheet metal parts, make a miniature nested, after the stamping is completed, remove the parts, leaving the remaining sheet metal layer, which will make the sheet metal parts extreme, optimize the quality of parts.
Use special tools
​Elements are becoming more complicated. Many product designers come up with concepts that frequently leave programmers scratching their heads to discover the best way to execute and produce the parts that the engineers seem to want to design. Designers choose parts contours that are hard to program because they reduce weight, do not need to be reassembled downstream, and are distinct. But for the output operation, it is very troublesome, it may paralyze the punch operation.
As the contours of parts become more complicated, specifically designed stamping tools are required to keep up with this level of complexity. To press more complex, multi-faceted tools, you can’t just program a tool, you have to utilize a group of tools.
To punch more than two product designs at the same time, a special punching tool can be designed — the lower part of the tool can punch one product, and the upper part can punch another product — simply by mounting the tool to an automated guidance station. When stamping multiple parts with distinct radii, instead of using many tools with different fillet radii, why not design a tool with different fillet radii for each corner?

Off-the-shelf special tools
New die concepts introduced in recent years, such as fine contour tools and tools for deburring and tapping, aim to decrease or eliminate secondary operations entirely.
The fine contour tool achieves 800 strokes/min, which is not feasible with typical contour tools because it does not satisfy material thickness requirements. Fine contour tools can produce quality close to laser cutting. By utilizing these features, the maker can enhance its ability to commence the work of the prototype.
There is also a special tool already available on the market: the bow tool, which does not remove secondary manipulation but can help makers prevent the use of dangerous wire connections. Wire connectors serve to attach stamped parts to sheet metal pieces until they are removed by an operator.
But there’s a problem with bow tools: their diamond shape, which can stick to parts (though not to sheet metal pieces), requires an operator to remove it manually. To prevent this hassle, makers can select a parallelogram tool that strips the parts entirely from the sheet metal.
​Utilizing the parallelogram tool involves a much more complicated programming approach than using the bow tool.
Say goodbye to the vibrator
Of course, many sheet metal manufacturers have the complete elimination of vibrator parts as their production goal. And automation is one way to do that. Automatic removal of parts from the stamping table, removing scrap after cutting small parts, is becoming more and more prevalent. This raises the loading system for sheet metal parts.
Automatic parts offloaders remove parts from the sheet metal after they have been stamped, avoiding the hassle of using miniature connectors. An mechanical offloader then stacks the parts onto a pallet. Although it still takes five to seven seconds to remove each element, the time saved for post-processing such as rolling parts down and sorting them is sufficient to reach a return on the automation investment.

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