{"id":32646,"date":"2026-08-31T22:40:11","date_gmt":"2026-08-31T13:40:11","guid":{"rendered":"https:\/\/www.machicoco.co.jp\/archives\/32646"},"modified":"2026-09-01T17:37:17","modified_gmt":"2026-09-01T08:37:17","slug":"manufacturing-smtayjl5j2","status":"publish","type":"post","link":"https:\/\/www.machicoco.co.jp\/en\/archives\/32646","title":{"rendered":"Points to check in drawings and procedure manuals when transferring assembly from an overseas factory to Japan"},"content":{"rendered":"<style>\n.mc-article{max-width:680px;margin:0 auto;padding:56px 20px 80px;\n  font-size:17px;line-height:2.0;color:#1a1a1a;\n  font-family:-apple-system,\"Hiragino Sans\",\"Noto Sans JP\",sans-serif;}\n.mc-article p{margin:0 0 1.9em;line-height:2.0;}\n.mc-article h2{font-size:23px;font-weight:700;line-height:1.6;\n  margin:3.2em 0 1.1em;padding-bottom:.5em;border-bottom:1px solid #e6e6e6;}\n.mc-article h2:first-child{margin-top:0;}\n.mc-article h3{font-size:19px;font-weight:700;line-height:1.7;margin:2.6em 0 .9em;}\n.mc-article ul,.mc-article ol{margin:0 0 1.9em;padding-left:1.6em;}\n.mc-article li{margin-bottom:.8em;line-height:1.95;}\n.mc-article a{color:#1B6FA8;}\n.mc-article strong{font-weight:700;}\n@media(max-width:600px){\n  .mc-article{font-size:16px;padding:36px 18px 64px;}\n  .mc-article h2{font-size:20px;margin-top:2.6em;}\n}\n<\/style><div class=\"mc-article\"><h2>We&#039;re looking for a way to bring the assembly process back to Japan, without knowing the overseas market rates.<\/h2>\n<p>We received an inquiry from a company that wanted to outsource only the assembly process to a domestic contractor in Japan because export costs from overseas had increased due to tariffs.<\/p>\n<p>The client consulted us because they didn&#039;t know how much the overseas market prices differed from the domestic market prices, and they weren&#039;t sure if they could assemble the product in the same way if they were given the drawings and instructions as they were.<\/p>\n\n<h2>Even if you provide the drawings exactly as they are, it doesn&#039;t guarantee that they will be assembled with the same precision.<\/h2>\n<p>Drawings and procedures created for overseas factories are often written based on the assumption of local work methods.<\/p>\n<p>Simply by looking at the documentation, it&#039;s impossible to determine whether a Japanese assembly partner can assemble the product using the same process and precision.<\/p>\n<p>Because the supplier of parts changed and the workers&#039; familiarity with the procedures also changed, it was necessary to check whether the drawings and procedure manuals contained sufficient information.<\/p>\n\n<h2>Adjustments made by fitting the parts to the actual object are often not documented in drawings or procedure manuals.<\/h2>\n<p>When outsourcing only parts supply and assembly, the way processes are divided and inspection standards are written can vary from factory to factory.<\/p>\n<p>Some factories record an entire process together, while others break it down into smaller steps, making it difficult to standardize the format.<\/p>\n<p>When adjustments are made on-site based on on-the-spot judgment, these adjustments are often not recorded numerically in drawings or procedure manuals.<\/p>\n<p>If a worker makes adjustments based on experience, such as &quot;I&#039;ll trim this a little to make it fit,&quot; simply providing a document will make it difficult to reproduce the same result.<\/p>\n\n<h2>First, check to what extent the tolerances and inspection standards are written down.<\/h2>\n<p>For this consultation, we had several engineers compare the drawings and procedure manuals.<\/p>\n<p>The following points were checked at each stage of the process:<\/p>\n<ul>\n<li>To what extent are tolerances clearly defined as numerical values?<\/li>\n<li>Are the inspection standards written in a way that anyone can understand?<\/li>\n<li>Where are the parts that are being adjusted by trial and error?<\/li>\n<\/ul>\n<p>Based on this confirmation, we separated the processes that could be transferred domestically using only document information from those that required on-site adjustments.<\/p>\n\n<h2>We identified the processes and restructured them into units that would be easier for the Japanese side to assemble.<\/h2>\n<p>We reviewed the drawings and procedures for each step of the process, and proceeded while confirming any unclear points with the engineers.<\/p>\n<p>Instead of simply using the same process divisions as in the overseas factory, we considered a method to reorganize the processes into units that would be easier to assemble in Japan.<\/p>\n<p>For areas where adjustments were previously made by trial and error, we also considered methods such as creating new jigs or rewriting inspection standards as numerical values.<\/p>\n\n<h2>When bringing overseas production back to Japan, the focus remains the same.<\/h2>\n<p>In situations like this, where we&#039;re shifting overseas production back to domestic assembly, or when searching for a new outsourcing partner, I believe it&#039;s useful to check how thoroughly drawings and procedures are documented.<\/p>\n<p>When a factory changes, the way parts are received and the workers&#039; familiarity with the process also changes. Separating information written in documents from on-site judgment makes it easier to decide whether to change suppliers.<\/p>\n\n<h2>From dividing the process to selecting the assembly site.<\/h2>\n<p>MACHICOCO collaborates with engineers in Higashi-Osaka to handle project management, bringing products to life.<\/p>\n<p>We don&#039;t own large-scale facilities in-house. Instead, we work with engineers to review drawings and procedures, break down processes, and select assembly locations. We are involved from the prototyping stage and handle the process planning for mass production.<\/p>\n\n<h2>Even without drawings, you can consult with us if you have the actual product and can explain the procedure.<\/h2>\n<p>To expedite the process, please send us the following information when you come for a consultation.<\/p>\n<ul>\n<li>The drawings and procedures currently in use<\/li>\n<li>Photos and videos showing the assembly procedure.<\/li>\n<li>Actual sample<\/li>\n<li>Expected quantity and desired timing<\/li>\n<\/ul>\n<p>Drawings are not required.<\/p>\n<p>Even before the assembly method is finalized, we can consider manufacturing methods while looking at drawings and actual samples.<\/p>\n\n<!-- \u56f3\u89e3\u6848\uff1a\u6d77\u5916\u5de5\u5834\u5411\u3051\u306e\u624b\u9806\u66f8\u3068\u3001\u65e5\u672c\u5411\u3051\u306b\u66f8\u304d\u76f4\u3057\u305f\u624b\u9806\u66f8\u3092\u4e26\u3079\u3066\u6bd4\u8f03\u3059\u308b\u56f3\u3002\u5de5\u7a0b\u306e\u5206\u3051\u65b9\u306e\u9055\u3044\u3084\u3001\u691c\u67fb\u57fa\u6e96\u304c\u6570\u5024\u5316\u3055\u308c\u305f\u7b87\u6240\u3001\u73fe\u7269\u5408\u308f\u305b\u3067\u8abf\u6574\u3057\u3066\u3044\u305f\u7b87\u6240\u306b\u5370\u3092\u3064\u3051\u3066\u793a\u3059\u3002 -->\n<p><a href=\"https:\/\/www.machicoco.co.jp\/en\/manufacturing\/\">Even before the processing method is decided, we can consider manufacturing methods while looking at drawings and actual samples.<\/a><\/p><\/div>","protected":false},"excerpt":{"rendered":"<p>\u6d77\u5916\u306e\u76f8\u5834\u304c\u5206\u304b\u3089\u306a\u3044\u307e\u307e\u3001\u7d44\u7acb\u3060\u3051\u3092\u56fd\u5185\u306b\u623b\u3057\u305f\u3044\u3068\u3044\u3046\u76f8\u8ac7 \u95a2\u7a0e\u306e\u5f71\u97ff\u3067\u6d77\u5916\u304b\u3089\u306e\u8f38\u51fa\u30b3\u30b9\u30c8\u304c\u4e0a\u304c\u308a\u3001\u7d44\u7acb [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-32646","post","type-post","status-publish","format-standard","hentry","category-1"],"acf":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/posts\/32646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/comments?post=32646"}],"version-history":[{"count":1,"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/posts\/32646\/revisions"}],"predecessor-version":[{"id":32651,"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/posts\/32646\/revisions\/32651"}],"wp:attachment":[{"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/media?parent=32646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/categories?post=32646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.machicoco.co.jp\/en\/wp-json\/wp\/v2\/tags?post=32646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}