CNC feed ratecalculator

3. What is Plunge Speed?Plunge speed is the speed at which the router bit is driven down (or plunged) into the material when starting a cut. The ideal plunge speed will vary depending on the bit used and the material being cut, but it is always important not to plunge too quickly as this can damage the tip of the cutter.

It's important to remember the manufacturers' guidelines and suggestions for the cutting tool and material being used. However, to ensure the best possible results, we recommend experimenting with your machine following the instructions.

CNCfeeds and speeds chart pdf

4. What is Spindle RPM?Spindle rpm or spindle speed is the rate at which the spindle revolves while cutting. This should also be set to a value appropriate for the tool being used and the material being cut. It is sometimes possible to cut at a faster feed rate by increasing the spindle rpm.

1. What is Feed Rate?Feed rate refers to the distance the cutting tool travels during one minute, really the velocity at which the cutter is advanced against the workpiece. It can generally be thought of as how fast the machine moves the router bit through the material when cutting. The feed rate is typically measured in units per minute (i.e., metres per minute).

Feed rateand plungeratecalculator

Since each machine, material, and application is unique, it is recommended that you experiment with your machine to achieve the best outcome for your application.

CNC feed ratefor aluminum

If you cut at too low of a feed rate or with too high of a spindle rpm, there is a risk of overheating the router bit and burning or melting the workpiece.

The suggested feed speed for a given project will vary depending on the material you are cutting, the material of the cutter itself, and several other factors.Feed speed has a massive impact on the outcome of your work, and is directly related to:• Safety• Productivity• Surface finish• Part qualityFeed speed can also contribute to the wear on your CNC machine components over time.

When cutting, there is an enormous amount of heat created, and only 2 places for that heat to go - into your tool or out to the chip. By matching the feed speed & RPM, the cutting tool engages the workpiece properly, maintains a consistent chip load, and achieves the desired surface finish.

5. Feed Rate OptimisationFeed rate optimisation is important to maximising the efficiency and quality of a cut. It can also help preserve the long-term condition and performance of your CNC machine.

Plungerate CNC

The table at the bottom shows the values of surface speed (in metres per minute) that are used for the calculation of the values (in RPM) in the top table.

This calculator gives guideline cutting speeds for a specified diameter. Slide the diameter back and forth and the table will update for the various materials. You can also enter a custom surface speed in metres per minute and see the cutting speed in RPM for the specified diameter.

It is critical to have feed speeds and RPM matched up. However, it is equally important to note the ideal feed speed and RPM will differ based on the material being cut, cutting tool being used, and the specific machining operation being carried out.

CNCRouter feeds and speeds calculator

CNC feed rateformula

Consider a project where the cutter is engaged in the material accelerating at 10 metres per minute along a linear path. When it comes to a 90-degree corner, the cutter must decelerate to a dead stop precisely at the corner point, change directions, and accelerate back up to 10 metres per minute to continue cutting. This rapid deceleration results in increased torque loads on the machine.

Think of the cutter like a car. If you were driving 100 kph approaching a 90-degree turn, it would be smart, even safer to slow down ahead of time. This is where feed speed optimisation comes in.

2. What is Slew Speed?Slew speed, also known as traverse speed, refers to the speed at which the machine moves when above the material traveling between cuts. In most scenarios, the slew speed is set as high as possible to help reduce cycle times and improve efficiency.

No matter what material you are cutting (MDF, plywood, particle board, plastics, aluminium, bamboo, FR materials, …), if the feed speed is too slow and the RPM is too high, the cutting tool can cause excessive heat and wear, which can damage the tool and the workpiece. This can result in a poor-quality cut, an uneven surface finish and sometimes, tool breakage.

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When they're incorrectly matched it can lead to tool breakage, premature bluntening, burning & bad edge fnishes. Matched speeds result in a higher quality cut, better surface finish, longer tool life and reduces the risk of unexpected downtime.

CNC feed ratechart

As experts in the field, we have assisted numerous businesses in preventing potential failures and breakdowns. Here are some tips and answers to the common burning question "what if...?".

To ensure the tool works at its best, matching feed speeds and RPM on your CNC machine is one of the first things you must look for.