1.0パーツマスターhttps://partsmastery.com/jaPMEdithttps://partsmastery.com/ja/author/pmedit/rich600338<blockquote class="wp-embedded-content" data-secret="lRaSidWN7j"><a href="https://partsmastery.com/ja/step-turning-principles-machining-process-applications/">Step Turning: Principles, Machining Process & Applications</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://partsmastery.com/ja/step-turning-principles-machining-process-applications/embed/#?secret=lRaSidWN7j" width="600" height="338" title="“Step Turning: Principles, Machining Process & Applications” — PartsMastery" data-secret="lRaSidWN7j" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://partsmastery.com/wp-includes/js/wp-embed.min.js </script>Step turning is one of the most widely used forming processes in CNC turning. Specifically, it creates rotary parts with multiple different diameters along a single central axis. As the cutter travels along the axis in a controlled path, it forms a stepped profile with clean, sharp shoulders. By completing all outer diameter features in one setup, it removes concentricity errors caused by repeated re-clamping. For this reason, it serves as a core machining method for precision shafts, sleeves and similar cylindrical components. Compared with standard straight turning, step turning requires tighter control over tool paths, shoulder positioning and dimensional accuracy. Thanks to modern CNC systems, it also delivers highly […]https://partsmastery.com/wp-content/uploads/2026/07/3a93c03a889e9b7dcebf2595f0a9e6fa.jpeg500500