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#1 28-07-2021 08:25:17

upamfva
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Understanding Swiss-Type Machining

Understanding Swiss-Type Machining



Once seen as a specialty machine tool, the CNC Swiss-type is increasingly being used in shops that are full of more conventional CNC machines. For the newcomer to Swiss-type machining, here is what the learning curve is like.Get more news about Swiss-type Lathe Machining,you can vist our website!

Who is using CNC Swiss-type lathes? The answer might be changing. In the 2013 Capital Spending Survey, one observable change in machine tool buying relates to the companies that expect to buy a CNC Swiss-type machine. Throughout past years, this survey routinely showed medical and electronics applications accounting for large shares of the expected spending on this machine type. This year, the anticipated spending is more evenly spread across various industry applications. If that change indicates a trend, it suggests that many shops are newly discovering the value of CNC Swiss-types, and many shops are installing this type of machine for the first time.

Groth Manufacturing is an example. The contract manufacturer in Carpentersville, Illinois has 35 CNC machine tools, including horizontal and vertical machining centers as well as CNC lathes. Its most recent machine purchase is a B0124 CNC Swiss-type from Tsugami.
The application in this case is defense-related. Swiss-type machining provides a cost-effective way to produce dust cover pins and firing pins used in military rifles. These long, slender components feature a tolerance band of 0.0005 inch on the part’s diameter.

Company President John Groth says the components used to be machined on a more conventional CNC turning center. A box tool turned the precise diameter. However, when the customer asked to be able to order parts in smaller quantities and with shorter lead times, the shop had to begin carrying inventory to accommodate the request. Stocking the inventory created extra expense, so Mr. Groth had to find an offsetting cost reduction. The efficiency gain from turning the pins more quickly on a CNC Swiss-type delivered the needed savings.

A Swiss-type lathe is a variety of turning machine that feeds the stock through a guide bushing. This means the OD turning tool can always cut the stock near the bushing, and therefore near the point of support, no matter how long the workpiece. The machine feeds the work out of the spindle and past the tool as it goes. This makes the CNC Swiss-type particularly effective for long and slender turned parts.

In a way, Mr. Groth’s purchase of a CNC Swiss-type meant coming full circle. His company had been a screw machine shop. When he bought it from its previous owner, the machine tools that came with it were cam-driven automatic lathes for precise production of small turned parts. Mr. Groth, a toolmaker, had no previous experience with this type of machine, so he taught himself to use them. He learned with his own time and his own hands how to set up these machines and apply them effectively, even efficiently. Building on the revenue these machines brought in, he gradually expanded the shop (from 7,000 square feet then to 22,000 square feet now) and added one CNC machine after another. Now, the latest of those machines is the Swiss-type.
Relative to other CNC machines, he says the biggest adjustment with this machine has probably been the programming. The machine moves in ways that are foreign compared to other CNC lathes. Some M codes and waiting commands are also different. For the sake of learning the machine and developing proficiency with it, Mr. Groth is forgoing CAM software for now in order to program the machine by hand at the control.

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#3 02-06-2022 08:54:59

vaporum
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Re : Understanding Swiss-Type Machining

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