This calculator helps you determine the optimal Spindle Speed (RPM) and Feed Rate for machining operations. Understanding these parameters is crucial for efficient material removal, tool longevity, and achieving desired surface finish.
Results:
Spindle Speed (RPM): —
Feed Rate (mm/min): —
function calculateRPMFeedRate() {
var toolDiameter = parseFloat(document.getElementById("toolDiameter").value);
var cuttingSpeed = parseFloat(document.getElementById("cuttingSpeed").value);
var feedPerTooth = parseFloat(document.getElementById("feedPerTooth").value);
var numberOfTeeth = parseFloat(document.getElementById("numberOfTeeth").value);
var rpmResultElement = document.getElementById("rpmResult");
var feedRateResultElement = document.getElementById("feedRateResult");
// Clear previous results
rpmResultElement.textContent = "–";
feedRateResultElement.textContent = "–";
// Input validation
if (isNaN(toolDiameter) || toolDiameter <= 0) {
alert("Please enter a valid Tool Diameter greater than 0.");
return;
}
if (isNaN(cuttingSpeed) || cuttingSpeed <= 0) {
alert("Please enter a valid Cutting Speed greater than 0.");
return;
}
if (isNaN(feedPerTooth) || feedPerTooth <= 0) {
alert("Please enter a valid Feed Per Tooth greater than 0.");
return;
}
if (isNaN(numberOfTeeth) || numberOfTeeth <= 0) {
alert("Please enter a valid Number of Teeth greater than 0.");
return;
}
// RPM Calculation: RPM = (Cutting Speed * 1000) / (π * Tool Diameter)
var rpm = (cuttingSpeed * 1000) / (Math.PI * toolDiameter);
// Feed Rate Calculation: Feed Rate (mm/min) = RPM * Feed Per Tooth * Number of Teeth
var feedRate = rpm * feedPerTooth * numberOfTeeth;
rpmResultElement.textContent = rpm.toFixed(2);
feedRateResultElement.textContent = feedRate.toFixed(2);
}
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font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 400px;
margin: 20px auto;
background-color: #f9f9f9;
}
.calculator-container h2 {
text-align: center;
margin-bottom: 15px;
color: #333;
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.calculator-container p {
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margin-bottom: 20px;
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margin-bottom: 15px;
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margin-bottom: 5px;
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button:hover {
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margin-bottom: 10px;
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}
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font-size: 1.1em;
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