{"id":19804,"date":"2025-07-02T23:24:02","date_gmt":"2025-07-03T07:24:02","guid":{"rendered":"https:\/\/shengenfab.com\/?p=19804"},"modified":"2025-07-03T02:21:13","modified_gmt":"2025-07-03T10:21:13","slug":"sfm-in-machining","status":"publish","type":"post","link":"https:\/\/shengenfab.com\/ar\/sfm-in-machining\/","title":{"rendered":"\u0627\u0644\u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u0645\u0633\u062a\u062f\u0627\u0645\u0629 \u0644\u0644\u0623\u0635\u0648\u0644 \u0641\u064a \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0622\u0644\u064a: \u0645\u0627\u0647\u064a\u062a\u0647 \u0648\u0643\u064a\u0641\u064a\u0629 \u062d\u0633\u0627\u0628\u0647"},"content":{"rendered":"
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Machining work often runs into problems like slow progress, rising costs, and worn-out tools. Many engineers and shop managers try to speed things up, but they worry about losing part quality. You might have come across the term “SFM” in a meeting or while flipping through a machine manual. You didn’t pay much attention to it. You might even wonder if it’s something you need to know.<\/p>

Here’s the truth\u2014if you don’t understand what SFM means, it becomes much harder to get the most out of your machines. Knowing how it works can help you cut faster, protect your tools, and keep costs under control. Here is a clear introduction to SFM and how it connects to the basics of machining.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u0645\u0627\u0630\u0627\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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<\/p>

\u0645\u0627 \u0647\u064a SFM \u0641\u064a \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0622\u0644\u064a\u061f<\/h2>

<\/p>

SFM \u062a\u0639\u0646\u064a \"\u0642\u062f\u0645 \u0627\u0644\u0633\u0637\u062d \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629\". \u0648\u0647\u064a \u062a\u0642\u064a\u0633 \u0645\u062f\u0649 \u0633\u0631\u0639\u0629 \u062a\u062d\u0631\u0643 \u062d\u0627\u0641\u0629 \u0627\u0644\u0642\u0637\u0639 \u0644\u0644\u0623\u062f\u0627\u0629 \u0639\u0628\u0631 \u0633\u0637\u062d \u0627\u0644\u0645\u0627\u062f\u0629. \u062a\u0639\u062a\u0645\u062f \u0647\u0630\u0647 \u0627\u0644\u0633\u0631\u0639\u0629 \u0639\u0644\u0649 \u0633\u0631\u0639\u0629 \u062f\u0648\u0631\u0627\u0646 \u0627\u0644\u0623\u062f\u0627\u0629 \u0648\u062d\u062c\u0645\u0647\u0627.<\/p>

<\/p>

\u0641\u0643\u0631 \u0641\u064a \u0627\u0644\u0623\u0645\u0631 \u0628\u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629: \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0623\u062f\u0627\u0629 \u0627\u0644\u0642\u0637\u0639 \u062a\u062f\u0648\u0631 \u0628\u0628\u0637\u0621 \u0634\u062f\u064a\u062f\u060c \u0641\u0642\u062f \u0644\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u0642\u0637\u0639 \u0646\u0638\u064a\u0641\u064b\u0627. \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u062a\u062f\u0648\u0631 \u0628\u0633\u0631\u0639\u0629 \u0643\u0628\u064a\u0631\u0629\u060c \u0641\u0642\u062f \u062a\u0631\u062a\u0641\u0639 \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0623\u062f\u0627\u0629 \u0623\u0648 \u062a\u062a\u0622\u0643\u0644 \u0628\u0633\u0631\u0639\u0629. \u062a\u0642\u062f\u0645 SFM \u0631\u0642\u0645\u064b\u0627 \u0644\u0644\u0645\u0633\u0627\u0639\u062f\u0629 \u0641\u064a \u0627\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0627\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629.<\/p>

<\/p>

\u0647\u0630\u0627 \u0627\u0644\u0631\u0642\u0645 \u0645\u0641\u064a\u062f \u0639\u0646\u062f \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0633\u0631\u0639\u0627\u062a \u0644\u0645\u0627\u0643\u064a\u0646\u0627\u062a \u0627\u0644\u062a\u0641\u0631\u064a\u0632 \u0623\u0648 \u0627\u0644\u0645\u062e\u0627\u0631\u0637 \u0623\u0648 \u0627\u0644\u0645\u062b\u0627\u0642\u0628. \u0641\u0647\u0648 \u064a\u0646\u0637\u0628\u0642 \u0639\u0644\u0649 \u0643\u0644 \u0645\u0646 \u0627\u0644\u0623\u062f\u0627\u0629 \u0648\u0627\u0644\u0645\u0627\u062f\u0629. \u062a\u062d\u062a\u0627\u062c \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629 \u0625\u0644\u0649 SFM \u0645\u062e\u062a\u0644\u0641\u0629 \u0644\u0644\u0642\u0637\u0639 \u0628\u0634\u0643\u0644 \u062c\u064a\u062f \u0648\u062a\u062c\u0646\u0628 \u0627\u0644\u0645\u0634\u0627\u0643\u0644.<\/p>

<\/p>

\u0644\u0645\u0627\u0630\u0627 \u062a\u0639\u062a\u0628\u0631 SFM \u0645\u0647\u0645\u0629 \u0641\u064a \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0622\u0644\u064a\uff1f<\/h2>

<\/p>

\u062a\u062d\u0627\u0641\u0638 \u0645\u0627\u0643\u064a\u0646\u0629 SFM \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0639\u0644\u0649 \u062d\u062f\u0629 \u0627\u0644\u0623\u062f\u0648\u0627\u062a \u0644\u0641\u062a\u0631\u0629 \u0623\u0637\u0648\u0644 \u0648\u062a\u0648\u0641\u0631 \u062a\u0634\u0637\u064a\u0628\u0627\u062a \u0623\u0643\u062b\u0631 \u0633\u0644\u0627\u0633\u0629. \u0643\u0645\u0627 \u0623\u0646\u0647 \u064a\u0633\u0627\u0639\u062f \u0639\u0644\u0649 \u062a\u062c\u0646\u0628 \u0627\u0644\u0633\u062e\u0648\u0646\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629\u060c \u0648\u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632\u060c \u0648\u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0630\u0627\u062a \u0627\u0644\u062c\u0648\u062f\u0629 \u0627\u0644\u0631\u062f\u064a\u0626\u0629. \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062f\u064a \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0627\u0643\u064a\u0646\u0629 SFM \u0627\u0644\u062e\u0627\u0637\u0626\u0629 \u0625\u0644\u0649 \u0625\u0636\u0627\u0639\u0629 \u0627\u0644\u0648\u0642\u062a \u0648\u0625\u062a\u0644\u0627\u0641 \u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0648\u062a\u0644\u0641 \u0627\u0644\u0623\u062f\u0648\u0627\u062a \u0628\u0633\u0631\u0639\u0629.<\/p>

<\/p>

\u0644\u0643\u0644 \u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0627\u0644\u0623\u062f\u0648\u0627\u062a \u0646\u0637\u0627\u0642 SFM \u0645\u0648\u0635\u0649 \u0628\u0647. \u064a\u0633\u0627\u0639\u062f \u0627\u0644\u0627\u0644\u062a\u0632\u0627\u0645 \u0628\u0647\u0630\u0627 \u0627\u0644\u0646\u0637\u0627\u0642 \u0641\u064a \u062a\u062d\u0642\u064a\u0642 \u0627\u0644\u0627\u062a\u0633\u0627\u0642. \u0643\u0645\u0627 \u0623\u0646\u0647 \u064a\u0642\u0644\u0644 \u0645\u0646 \u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0625\u0646\u062a\u0627\u062c \u0648\u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0623\u062f\u0648\u0627\u062a.<\/p>

<\/p>

\u064a\u0633\u062a\u062e\u062f\u0645 \u0639\u0645\u0627\u0644 \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0627\u062a SFM \u0644\u0636\u0628\u0637 \u0633\u0631\u0639\u0629 \u0639\u0645\u0648\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u0646 \u0627\u0644\u0635\u062d\u064a\u062d\u0629 (RPM). \u064a\u0642\u0648\u0645\u0648\u0646 \u0628\u0636\u0628\u0637\u0647\u0627 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u062d\u062c\u0645 \u0627\u0644\u0623\u062f\u0627\u0629 \u0648\u0646\u0648\u0639 \u0627\u0644\u0645\u0627\u062f\u0629. \u0648\u0647\u0630\u0627 \u064a\u062c\u0639\u0644 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0622\u0644\u064a \u0623\u0643\u062b\u0631 \u0623\u0645\u0627\u0646\u064b\u0627 \u0648\u0645\u0648\u062b\u0648\u0642\u064a\u0629.<\/p>

<\/p>

\u0623\u0633\u0627\u0633\u064a\u0627\u062a \u0627\u0644\u0642\u062f\u0645 \u0627\u0644\u0633\u0637\u062d\u064a\u0629 \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0627\u0644\u0648\u0627\u062d\u062f\u0629<\/h2>

<\/p>

SFM helps machinists choose how fast a tool should move across the material. This section breaks down what it means and how it’s used on the shop floor.<\/p>

<\/p>

\u062a\u0639\u0631\u064a\u0641 \u0627\u0644\u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u0645\u0633\u062a\u062f\u0627\u0645\u0629 \u0644\u0644\u063a\u0627\u0628\u0627\u062a \u0627\u0644\u0645\u0633\u062a\u062f\u0627\u0645\u0629 \u0645\u0646 \u0627\u0644\u0646\u0627\u062d\u064a\u0629 \u0627\u0644\u0639\u0645\u0644\u064a\u0629<\/h3>

<\/p>

SFM shows how far the tool’s cutting edge travels across the surface in one minute. The unit is in feet per minute. It’s based on how fast the tool spins and how big the tool is.<\/p>

<\/p>

For example, if you’re using a large-diameter tool, it will cover more surface area at the same RPM than a small one. SFM helps you match the tool’s movement to the job and the material.<\/p>

<\/p>

It’s a way to control cutting speed with real-world numbers. Machinists use SFM charts or formulas to pick the right speed for each tool and material.<\/p>

<\/p>

\u0643\u064a\u0641 \u062a\u0631\u062a\u0628\u0637 SFM \u0628\u0633\u0631\u0639\u0629 \u0627\u0644\u0642\u0637\u0639\uff1f<\/h3>

<\/p>

\u0633\u0631\u0639\u0629 \u0627\u0644\u0642\u0637\u0639 \u0647\u064a \u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u0642\u0627\u0621 \u0627\u0644\u0645\u0627\u062f\u0629 \u0628\u0623\u062f\u0627\u0629 \u0627\u0644\u0642\u0637\u0639. SFM \u0647\u064a \u0625\u062d\u062f\u0649 \u0637\u0631\u0642 \u0642\u064a\u0627\u0633 \u0647\u0630\u0647 \u0627\u0644\u0633\u0631\u0639\u0629. \u0648\u0647\u064a \u062a\u0631\u0643\u0632 \u0639\u0644\u0649 \u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u0633\u0637\u062d\u064a\u060c \u062d\u064a\u062b \u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u0623\u062f\u0627\u0629 \u0627\u0644\u062c\u0632\u0621.<\/p>

<\/p>

If SFM is too high, the tool can wear out or fail. If it’s too low, the cut might be rough or slow. Good SFM means better chip control, better surface finish, and longer tool life.<\/p>

<\/p>

\u0633\u0631\u0639\u0629 \u0627\u0644\u0642\u0637\u0639 \u0636\u0631\u0648\u0631\u064a\u0629 \u0641\u064a \u0643\u0644 \u0645\u0646 \u062a\u062d\u0648\u0644<\/a> \u0648 \u0637\u062d\u0646<\/a>. \u062a\u0633\u0647\u0651\u0644 SFM \u0645\u0642\u0627\u0631\u0646\u0629 \u0633\u0631\u0639\u0627\u062a \u0627\u0644\u0642\u0637\u0639 \u0639\u0628\u0631 \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0627\u062a \u0648\u0627\u0644\u0645\u0647\u0627\u0645.<\/p>

<\/p>

\u0627\u0644\u0627\u062e\u062a\u0644\u0627\u0641\u0627\u062a \u0628\u064a\u0646 SFM \u0648 RPM<\/h3>

<\/p>

\u0625\u0646 SFM \u0648RPM \u0645\u0631\u062a\u0628\u0637\u0627\u0646\u060c \u0644\u0643\u0646\u0647\u0645\u0627 \u0644\u064a\u0633\u0627 \u0645\u062a\u0645\u0627\u062b\u0644\u064a\u0646. \u064a\u0642\u064a\u0633 SFM \u0645\u062f\u0649 \u0633\u0631\u0639\u0629 \u062a\u062d\u0631\u0643 \u0627\u0644\u0623\u062f\u0627\u0629 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0633\u0637\u062d \u0627\u0644\u0645\u0627\u062f\u0629. RPM \u0647\u0648 \u0645\u062f\u0649 \u0633\u0631\u0639\u0629 \u062f\u0648\u0631\u0627\u0646 \u0627\u0644\u0623\u062f\u0627\u0629 \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0627\u0644\u0648\u0627\u062d\u062f\u0629.<\/p>

<\/p>

\u062a\u0639\u062a\u0645\u062f SFM \u0639\u0644\u0649 \u0643\u0644 \u0645\u0646 \u0639\u062f\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u062a \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0648\u0642\u0637\u0631 \u0627\u0644\u0623\u062f\u0627\u0629. \u062a\u062d\u062a\u0627\u062c \u0627\u0644\u0623\u062f\u0627\u0629 \u0627\u0644\u0623\u0643\u0628\u0631 \u0625\u0644\u0649 \u0639\u062f\u062f \u0623\u0642\u0644 \u0645\u0646 \u0639\u062f\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u062a \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0644\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 \u0646\u0641\u0633 SFM. \u062a\u062d\u062a\u0627\u062c \u0627\u0644\u0623\u062f\u0627\u0629 \u0627\u0644\u0623\u0635\u063a\u0631 \u062d\u062c\u0645\u0627\u064b \u0625\u0644\u0649 \u0639\u062f\u062f \u062f\u0648\u0631\u0627\u062a \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0623\u0643\u0628\u0631 \u0644\u0645\u0637\u0627\u0628\u0642\u0629 \u062a\u0644\u0643 \u0627\u0644\u0633\u0631\u0639\u0629.<\/p>

<\/p>

So, when you change tools, you must adjust the RPM to keep the same SFM. That’s why machinists calculate both before starting a cut.<\/p>

<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u0645\u0627\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
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<\/p>

\u0643\u064a\u0641\u064a\u0629 \u062d\u0633\u0627\u0628 SFM\uff1f<\/h2>

<\/p>

\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 SFM \u0641\u064a \u0627\u0644\u0648\u0638\u0627\u0626\u0641 \u0627\u0644\u062d\u0642\u064a\u0642\u064a\u0629\u060c \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0645\u0639\u0631\u0641\u0629 \u0643\u064a\u0641\u064a\u0629 \u062d\u0633\u0627\u0628\u0647\u0627. \u064a\u0634\u0631\u062d \u0647\u0630\u0627 \u0627\u0644\u062c\u0632\u0621 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629\u060c \u0648\u0627\u0644\u0645\u062f\u062e\u0644\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u062d\u062a\u0627\u062c\u0647\u0627\u060c \u0648\u0643\u064a\u0641\u064a\u0629 \u0627\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0635\u062d\u0629 \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u062a\u064a \u0644\u062f\u064a\u0643.<\/p>

<\/p>

\u0627\u0644\u0635\u064a\u063a\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0640 SFM<\/h3>

<\/p>

\u0627\u0644\u0635\u064a\u063a\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0644\u0640 SFM \u0647\u064a<\/p>

<\/p>

SFM = (\u03c0 \u00d7 \u0642\u0637\u0631 \u0627\u0644\u0623\u062f\u0627\u0629 \u00d7 \u0639\u062f\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u062a \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629) \u00f7 12<\/strong><\/p>

<\/p>

This gives the surface speed in feet per minute. You use \u03c0 (about 3.1416) because you’re dealing with the circular movement of the tool.<\/p>

<\/p>

\u062a\u0633\u0627\u0639\u062f\u0643 \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629 \u0639\u0644\u0649 \u0645\u0639\u0631\u0641\u0629 \u0645\u062f\u0649 \u0633\u0631\u0639\u0629 \u062a\u062d\u0631\u0643 \u062d\u0627\u0641\u0629 \u0627\u0644\u0642\u0637\u0639 \u0639\u0644\u0649 \u0627\u0644\u0633\u0637\u062d \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0644\u0644\u0623\u062f\u0627\u0629.<\/p>

<\/p>

\u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629: \u0627\u0644\u0642\u0637\u0631 \u0648\u0639\u062f\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u062a \u0641\u064a \u0627\u0644\u062f\u0642\u064a\u0642\u0629<\/h3>

<\/p>

\u0647\u0646\u0627\u0643 \u0645\u062a\u063a\u064a\u0631\u0627\u0646 \u0631\u0626\u064a\u0633\u064a\u0627\u0646 \u0641\u064a \u0645\u0639\u0627\u062f\u0644\u0629 SFM: \u0642\u0637\u0631 \u0627\u0644\u0623\u062f\u0627\u0629 \u0648\u0633\u0631\u0639\u0629 \u0639\u0645\u0648\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u0646 (RPM).<\/p>

<\/p>