{"id":11670,"date":"2023-03-29T11:11:38","date_gmt":"2023-03-29T18:11:38","guid":{"rendered":"https:\/\/www.fictiv.com\/?post_type=cpt_blog&#038;p=11670"},"modified":"2023-11-16T15:52:49","modified_gmt":"2023-11-16T23:52:49","slug":"parts-of-a-cnc-machine-explained","status":"publish","type":"cpt_blog","link":"https:\/\/www.fictiv.com\/articles\/parts-of-a-cnc-machine-explained","title":{"rendered":"Parts of a CNC Machine Explained"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"481\" data-src=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/five-axis-cnc-milling-machine-with-nc-code.jpg\" alt=\"five-axis cnc milling machine with nc code\" class=\"wp-image-11674 lazyload\" data-srcset=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/five-axis-cnc-milling-machine-with-nc-code.jpg 720w, https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/five-axis-cnc-milling-machine-with-nc-code-600x400.jpg 600w, https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/five-axis-cnc-milling-machine-with-nc-code-515x344.jpg 515w, https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/five-axis-cnc-milling-machine-with-nc-code-674x450.jpg 674w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<p>Producing complex parts with tight tolerances requires extensive experience, and even the best operators spend years fine-tuning their skills. CNC machines are the gold standard for high-quality and high-repeatability machining because they automate the machining process \u2014 computers and sensors control the machining operations.<\/p>\n\n\n\n<p>CNC machining is used in almost every industry due to the quality and precision of the parts it produces, coupled with relatively low labor requirements. CNC machining makes difficult-to-produce, tightly toleranced parts highly repeatable, and manufactures them in timeframes that are impossible for manual machining operations to match. While CNC machines greatly reduce the amount of energy an operator has to spend to operate them, understanding how they work is still incredibly important to achieve good results.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is a CNC Machine?<\/strong><\/h2>\n\n\n\n<p>CNC stands for Computer Numerical Control. CNC machines use computer programs to control the functions and motions of the machine\u2019s tool. Programs are prepared ahead of time (or auto-generated from a solid model) and contain coded alphanumeric data that the CNC machine interprets as a set of operations needed to produce the part.&nbsp;<\/p>\n\n\n\n<p>The computer uses this set of operations to control the motion of the tool or workpiece, feed rate, depth of cut, speed, coolant, and all other functions that an operator would perform on a manual tool. With each pass, layers of material are removed to shape a blank or workpiece. CNC machines can shape many different materials including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.fictiv.com\/articles\/what-to-know-about-cnc-machining-different-metals\">Metals<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.fictiv.com\/articles\/cnc-plastics-selection-guide\">Plastics<\/a><\/li>\n\n\n\n<li>Woods<\/li>\n\n\n\n<li>Composites<\/li>\n<\/ul>\n\n\n\n<p>Machines like lathes, mills, routers, gear hobbers, and others can all be operated via CNC. Each of these machine types can also perform operations on a variety of different axes \u2014 the greater the number of axes available for machining, the more complex the machine. With CNC machines, quality is consistent and not dependent solely on operators.<\/p>\n\n\n\n<p><em>Pro-Tip: Check out our <\/em><a href=\"https:\/\/www.fictiv.com\/articles\/the-ultimate-guide-to-cnc-machining\"><em>Ultimate Guide to CNC Machining<\/em><\/a><em> to learn more about CNC machining!<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"480\" data-src=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/coolant-applied-to-workpiece-during-cnc-milling-operation.jpg\" alt=\"coolant applied to workpiece during cnc milling operation\" class=\"wp-image-11679 lazyload\" data-srcset=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/coolant-applied-to-workpiece-during-cnc-milling-operation.jpg 720w, https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/coolant-applied-to-workpiece-during-cnc-milling-operation-600x400.jpg 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>13 Key Components of a CNC Machine<\/strong><\/h2>\n\n\n\n<p>CNC machines are complex assemblies and have many components, but there are 13 key components that you should be familiar with. These key components fall into two categories: the control system and the machine system.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Control System<\/strong><\/h3>\n\n\n\n<p>For CNC machines, the control system controls information, inputs, and outputs for the CNC machine. The key components of the control system are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Control panel<\/li>\n\n\n\n<li>Input device (tape reader, magnetic tape reader, or RS-232-C communication)<\/li>\n\n\n\n<li>Machine Control Unit (MCU)<\/li>\n\n\n\n<li>Feedback system<\/li>\n<\/ul>\n\n\n\n<p>When combined, these systems create an interface between the human and the machine so that the machine can accurately create the desired part. The MCU is the brain of the machine, taking inputs from the control panel and the input device and converting those into machine commands. The feedback system uses transducers and sensors to measure the position and speed of the cutting tool in real-time. The MCU then listens to the feedback system and makes adjustments as needed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Machine System<\/strong><\/h3>\n\n\n\n<p>The components in the machine system are responsible for manipulating and shaping the workpiece into the desired finished part. Key components of the machine system include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Driving system<\/li>\n\n\n\n<li>Machine tool<\/li>\n\n\n\n<li>Headstock<\/li>\n\n\n\n<li>Chuck<\/li>\n\n\n\n<li>Spindle<\/li>\n\n\n\n<li>Tool turret<\/li>\n\n\n\n<li>Tailstock<\/li>\n\n\n\n<li>Machine bed<\/li>\n\n\n\n<li>Coolant tank<\/li>\n<\/ul>\n\n\n\n<p>The driving system uses lead screws and motors to move the workpiece relative to the machine tool. As the workpiece or machine tool moves, the machine tool removes material from the workpiece. With a tool turret or automatic tool changer, CNC machines can automatically swap tool types.&nbsp;<\/p>\n\n\n\n<p>To prevent the intense heat generated during machining from damaging the machine tool or workpiece, coolant is pumped from the coolant tank and applied to the part being machined. The headstock holds the workpiece with chucks to resist the force applied by the machine tool.<\/p>\n\n\n\n<p>When machining long workpieces, a tailstock is used to support the workpiece and minimize deflection. All of these components are supported by the machine bed which provides structural support to the entire CNC machine.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"480\" data-src=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/Finished-CNC-turned-.jpeg\" alt=\"CNC-turned parts atop engineering drawings\" class=\"wp-image-11680 lazyload\" data-srcset=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/Finished-CNC-turned-.jpeg 720w, https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/Finished-CNC-turned--600x400.jpeg 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How Does a CNC Machine Work?<\/strong><\/h2>\n\n\n\n<p>CNC machines are incredible feats of engineering. Combining all of these system components together results in a machine that can reliably produce high-quality parts with minimal operator intervention. But how?<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Reading in the Program<\/strong><\/h3>\n\n\n\n<p>Using the input device, a program is read into the CNC machine&#8217;s Machine Control Unit (MCU). The program contains all of the relevant instructions for manufacturing a given part. These instructions tell the machine which tool to use, how fast to move, where to move, and any other relevant instructions.<\/p>\n\n\n\n<p>The way the program is read into the MCU has varied greatly over time. The earliest NC (numerical control) machines used paper tape with punched holes to understand how the machine should operate. Over time, the method to read in a program became digital and CNC was born. To keep programs portable, G code and M code are the file formats most often used to feed a program into a CNC machine.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Executing the Program<\/strong><\/h3>\n\n\n\n<p>The MCU reads the program and sends commands to the motion system to move the workpiece and tool as needed to manufacture the part. The MCU controls the motors, pumps, solenoids, and other components that comprise the CNC machine. The MCU acts as the machine\u2019s brain, telling all of the components what to do and when to do it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Reducing Error<\/strong><\/h3>\n\n\n\n<p>Part of what makes CNC machines so powerful is their ability to error correct. The position and velocity of the machine tool is measured by a feedback unit that reports back to the MCU. The MCU compares the requested output to what the feedback unit measures and updates the outputs to the motion system accordingly \u2014 minimizing errors in the process.<\/p>\n\n\n\n<p><em>Pro-Tip: Check out our article <\/em><a href=\"https:\/\/www.fictiv.com\/articles\/introduction-to-cnc-turning\"><em>A Basic Introduction to CNC Turning<\/em><\/a><em> to learn more about CNC turning!<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"480\" data-src=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/cnc-milling-machine-with-g-code-data-background.jpeg\" alt=\"cnc milling machine with g code data background\" class=\"wp-image-11676 lazyload\" data-srcset=\"https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/cnc-milling-machine-with-g-code-data-background.jpeg 720w, https:\/\/www.fictiv.com\/wp-content\/uploads\/2023\/03\/cnc-milling-machine-with-g-code-data-background-600x400.jpeg 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Advantages and Disadvantages of CNC Machining<\/strong><\/h2>\n\n\n\n<p>CNC machines have seen a consistently high demand and widespread adoption since their invention. Industries that use CNC machines include <a href=\"https:\/\/www.fictiv.com\/aerospace\">aerospace<\/a>, <a href=\"https:\/\/www.fictiv.com\/medical\">medical<\/a>, <a href=\"https:\/\/www.fictiv.com\/consumer-products\">consumer products<\/a>, and <a href=\"https:\/\/www.fictiv.com\/automotive\">automotive<\/a>. The ability to machine complex geometries efficiently with less skilled operators opens up many opportunities, and here are some of the key advantages and disadvantages of CNC machines:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Key Advantages<\/strong><\/h3>\n\n\n\n<p>CNC machines add capabilities to many industries that typically far outweigh the disadvantages. These advantages include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Can run 24 hours a day<\/li>\n\n\n\n<li>Reduced labor costs (fewer operators required compared to manual machining)<\/li>\n\n\n\n<li>Incredibly high accuracy and precision<\/li>\n\n\n\n<li>Easy integration with CAD and CAM<\/li>\n\n\n\n<li>CNC Operators don\u2019t need as much training as manual machinists<\/li>\n\n\n\n<li>Complex designs are not a problem<\/li>\n<\/ul>\n\n\n\n<p>With skilled labor becoming harder to find, CNC machines help fill a critical role automating and increasing production efficiency.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Key Disadvantages<\/strong><\/h3>\n\n\n\n<p>While CNC machines provide amazing advantages, they come with a few disadvantages as well, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Costs are higher than manual machines<\/li>\n\n\n\n<li>Maintenance costs can be higher due to increased complexity<\/li>\n\n\n\n<li>Replacement parts are often more expensive<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>CNC Machines Push Every Industry Forward<\/strong><\/h2>\n\n\n\n<p>CNC machines produce high-quality, repeatable parts with less human intervention than their manual counterparts. CNC machines are widely used by almost every industry because of their versatility, efficiency, precision and repeatability. Now that you have an understanding of how CNC machines and their 13 key components work, you can better leverage the vast capabilities of these amazing machines.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Fictiv is Sourcing Simplified&nbsp;<\/strong><\/h2>\n\n\n\n<p>For all your CNC machining and finishing needs, Fictiv has you covered. We\u2019re experts at producing custom CNC machined tight tolerance parts, in a variety of materials <strong>2-5x faster<\/strong> than your average machine shop. We simplify custom part sourcing with intelligent, streamlined, automated workflows and have a proven track record of delivering <strong>95.4% of orders on time and to spec<\/strong>.<\/p>\n\n\n\n<p>Fictiv is your operating system for custom <a href=\"https:\/\/www.fictiv.com\/cnc-machining-service\">cnc manufacturing services<\/a> that makes part procurement faster, easier, and more efficient. <a href=\"https:\/\/app.fictiv.com\/signup?_ga=2.117573067.352335549.1624292825-1943211571.1623715297\">Create an account<\/a> and upload your part to see what our instant quote process, <a href=\"https:\/\/www.fictiv.com\/articles\/dfm-action-steps\">design for manufacturability feedback<\/a>, and intelligent platform can do for you!\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Producing complex parts with tight tolerances requires extensive experience, and even the best operators spend years fine-tuning their skills. CNC machines are the gold standard for high-quality and high-repeatability machining because they automate the machining process \u2014 computers and sensors control the machining operations. CNC machining is used in almost every industry due to the [&hellip;]<\/p>\n","protected":false},"author":161,"featured_media":11674,"parent":0,"menu_order":0,"template":"","fictiv_role":[],"fictiv_topic":[],"fictiv_industry":[],"fictiv_manufacturing_process":[35],"coauthors":[191],"class_list":["post-11670","cpt_blog","type-cpt_blog","status-publish","has-post-thumbnail","hentry"],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Parts of a CNC Machine Explained | Fictiv<\/title>\n<meta name=\"description\" content=\"In this article, we explain the key components that make up a CNC Machine and how they work. 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