2: Mold Core Machining<\/h3>\n\n\n\n
The mold core component is a particularly complex element in mold manufacturing, requiring a multi-step process to ensure both precision and high quality. The machining of the mold core involves a sequence of operations\u2014ranging from roughing to finishing\u2014that demand precise control over grinding allowances and surface accuracy. This process incorporates various techniques\u2014including milling, benchwork, heat treatment, EDM, and wire cutting\u2014to guarantee the ultimate quality of the final product.<\/p>\n\n\n\n Rough Machining of Six Faces<\/strong> Rough Grinding<\/strong> Fine Machining on the Milling Machine<\/strong> Benchwork Operations:<\/strong> Perform tapping (thread cutting) and part marking\/stamping. Outsourced Heat Treatment:<\/strong> Ensure the hardness of the workpiece meets the standard requirement of HRC 48\u201352.<\/p>\n\n\n\n Fine Grinding:<\/strong> Perform fine grinding using a large surface grinder. The objective is to achieve a dimension that is 0.04 mm undersize relative to the mold frame, while maintaining parallelism and perpendicularity within a tolerance of 0.02 mm.<\/p>\n\n\n\n CNC Fine Machining:<\/strong> Conduct further high-precision machining operations.<\/p>\n\n\n\n Electrical Discharge Machining (EDM):<\/strong> Used to process areas that are difficult to machine or require extremely high precision.<\/p>\n\n\n\n Wire-cut EDM (Slow-feed Wire Cutting):<\/strong> Ensure dimensional accuracy within a tolerance of \u00b10.005 mm; typically, a “one-cut, one-trim” strategy is employed.<\/p>\n\n\n\n Mold Polishing (Spotting\/Finishing):<\/strong> Polish the workpiece to enhance its surface finish while strictly controlling the dimensions of the mold cavity.<\/p>\n\n\n\n Machining of Gates and Vents:<\/strong> Determine and machine the specific dimensions for gates (sprue\/runner inlets) and vents based on the material type being processed (e.g., zinc alloy, aluminum alloy, plastics, etc.) to ensure smooth material flow and effective air venting. Every detail \u2013 From the mold base to the mold core Mold processing\u00a0\u2014 A seemingly complex industrial process\u2014actually encompasses a multitude of intriguing and profound stages. Far from being merely a series of mechanized...<\/p>\n","protected":false},"author":1,"featured_media":33,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[1],"tags":[2,3,4],"class_list":["post-30","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mold-bases","tag-plastic-mold-base","tag-injection-mold-base","tag-custom-mold-bases"],"_links":{"self":[{"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/posts\/30","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/comments?post=30"}],"version-history":[{"count":2,"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/posts\/30\/revisions"}],"predecessor-version":[{"id":35,"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/posts\/30\/revisions\/35"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/media\/33"}],"wp:attachment":[{"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/media?parent=30"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/categories?post=30"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dymouldbase.com\/mold-bases\/wp-json\/wp\/v2\/tags?post=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Injection](\"https:\/\/www.dymouldbase.com\/mold-bases\/wp-content\/uploads\/2026\/05\/Injection-Mold-Base-Plastic-Mold-Base-Custom-Mold-Bases-2-1024x683.jpg\")
During rough machining on a milling machine, the primary objective is to ensure the perpendicularity and parallelism of the six faces, while simultaneously leaving an appropriate grinding allowance of approximately 1.2 mm.<\/p>\n\n\n\n
Next, perform rough grinding using a large surface grinder. Begin by grinding the major faces; then, use a vise to clamp the workpiece for grinding the minor faces. Maintain perpendicularity and parallelism within a tolerance of 0.05 mm, while leaving a bilateral allowance of 0.6\u20130.8 mm.<\/p>\n\n\n\n
On the milling machine, first calibrate the spindle head to ensure its alignment falls within an error margin of 0.02 mm. Subsequently, clamp the workpiece securely and commence machining operations, including the fine machining of screw holes, ejector pin holes, and wire-cutting guide holes, as well as the roughing of counterbores for core pins. Next, perform chamfering on the nozzle or sprue holes and the runner cone holes; finally, machine the cooling water channels and mill the corner radii (R-angles).<\/p>\n\n\n\n
CNC Rough Machining:<\/strong> During the rough machining phase, ensure that an appropriate machining allowance is left for subsequent operations.<\/p>\n\n\n\n
Rough Machining of Six Faces:<\/strong> First, use a milling machine to perform the initial rough machining of all six faces of the workpiece blank.
Fine Grinding of Six Faces:<\/strong> Perform fine grinding on the six faces that were previously rough-machined, bringing them to the exact dimensional specifications required. Rough Machining of the Hanging Step: Perform roughing operations on the hanging step using a milling machine.
Precision Grinding of the Hanging Step:<\/strong> Grind the hanging step to the specified dimensions, ensuring a precise sliding fit with the mold base.
Machining of the Inclined Surface: Machine the inclined surface using a milling machine, ensuring that its angle matches that of the clamping block, while leaving an appropriate machining allowance for subsequent operations.
Drilling and Machining of Angled Guide Pin Holes:<\/strong> First, drill the cooling water channels and the angled guide pin holes. Note that the diameter of the angled guide pin holes must be 1 mm larger than that of the guide pins, and the holes must be chamfered. Additionally, the angle of the guide pin holes should be slightly shallower than the angle of the slider’s inclined surface to ensure smooth engagement. Furthermore, depending on the specific requirements, the angled guide pin holes may also be machined in conjunction with the mold base after the mold has been assembled.<\/p>\n","protected":false},"excerpt":{"rendered":"