{"id":530,"date":"2026-07-15T08:00:33","date_gmt":"2026-07-15T06:00:33","guid":{"rendered":"https:\/\/www.ciipcavallari.it\/?p=530"},"modified":"2026-05-29T15:07:41","modified_gmt":"2026-05-29T13:07:41","slug":"riparazione-torni-biglia-cnc-assi","status":"publish","type":"post","link":"https:\/\/www.ciipcavallari.it\/en\/2026\/07\/15\/riparazione-torni-biglia-cnc-assi\/","title":{"rendered":"Biglia CNC lathe repair: axes, spindles, and machining issues"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The lathes <\/span><a href=\"https:\/\/www.bigliaspa.it\/\" target=\"_blank\" rel=\"noopener\"><b>CNC Ball<\/b><\/a><span style=\"font-weight: 400;\"> They are among the most popular machines in mechanical workshops due to their extraordinary material removal capacity and structural rigidity. Those who use a Biglia know they have a workhorse, capable of tackling demanding shifts on difficult materials. However, this very intensive use exposes the machine to stresses that, over time, affect its vital components: the spindle, the tool turret, and the axis kinematics.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When production slows down or the quality of the finish degrades, an intervention is necessary <\/span><b>specialized repair<\/b><span style=\"font-weight: 400;\">. CIIP Cavallari provides targeted diagnostics on Biglia lathes, focusing on resolving mechanical and electronic problems that can compromise the profitability of your workshop.<\/span><\/p>\n<h3><b>Diagnosing anomalies: where does a Biglia lathe suffer?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">In years of providing technical support for Biglia models (from the B series to the most recent multifunction versions), we&#039;ve found that problems almost never arise out of nowhere. There are specific set of symptoms that every workshop manager should monitor to avoid extremely costly emergency repairs.<\/span><\/p>\n<h3><b>1. The Spindle: Vibrations and Noise<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The spindle is the part that transmits power to the workpiece. In Biglia lathes, designed for deep cuts, the spindle bearings are subjected to immense radial and axial loads.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Symptoms of failure:<\/b><span style=\"font-weight: 400;\"> A high-pitched hiss at high rpm or a dull vibration (running noise) at low rpm indicates deterioration of the bearing races.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Consequences:<\/b><span style=\"font-weight: 400;\"> If left untreated, overheating can lead to seizure, requiring the entire spindle assembly to be replaced. Prompt repairs, however, allow for simple bearing replacement and clearance adjustment, resulting in significant cost savings.<\/span><\/li>\n<\/ul>\n<h3><b>2. The Tool Turret: Indexing Errors<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The turret is one of the most complex components of a Biglia lathe. It must rotate, lock, and ensure perfect positioning in just a few tenths of a second.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Common problems:<\/b><span style=\"font-weight: 400;\"> Accidental impacts during programming or worn proximity sensors can cause indexing errors. If the turret doesn&#039;t lock perfectly on its axis, the tool will run &quot;off-center,&quot; causing premature insert breakage and out-of-tolerance workpieces.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Repair:<\/b><span style=\"font-weight: 400;\"> Our intervention includes disassembly, checking of the Hirth discs, mechanical realignment and recalibration of the unlocking\/locking parameters in the CNC.<\/span><\/li>\n<\/ul>\n<h3><b>Axle Mechanics: Smoothness vs. Wear<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Biglia lathes move on large linear or prismatic guides. Turning accuracy depends entirely on the machine&#039;s ability to move the X and Z axes without hesitation.<\/span><\/p>\n<h3><b>Wear of ball screws and bearings<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">With millions of operating cycles, ball screws can develop a \u201cdead spot\u201d or backlash (<\/span><b>backlash<\/b><span style=\"font-weight: 400;\">). <a href=\"https:\/\/www.ciipcavallari.it\/en\/\">CIIP Cavallari<\/a> Performs positioning tests to measure this deviation. Often, the problem isn&#039;t the screw itself, but the support bearings, which have lost their original preload. A repair focused on replacing the screw supports can restore the Biglia lathe&#039;s former precision, avoiding the need to replace the entire screw.<\/span><\/p>\n<h3><b>Telescopic guards and lubrication<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A common failure in workshop lathes is caused by chips getting under the guards. If the centralized lubrication line is clogged, the guides begin to run dry, increasing friction and strain on the motors (overload alarm). Our service includes overhauling the lubrication circuits and restoring the telescopic guards to protect the mechanical heart of the machine.<\/span><\/p>\n<h3><b>CNC Control Electronics and Diagnostics<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Although Biglia is synonymous with mechanical robustness, integration with numerical control (often <a href=\"https:\/\/www.fanuc.eu\/\" target=\"_blank\" rel=\"noopener\">Fanuc<\/a>) requires specific electronics expertise. During the repair, CIIP Cavallari technicians analyze:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Drives and Motors:<\/b><span style=\"font-weight: 400;\"> Check operating temperatures and current draw.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Encoders and Measuring Lines:<\/b><span style=\"font-weight: 400;\"> Cleaning and checking signals to eliminate sudden altitude drifts.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>PLC Software and Logic:<\/b><span style=\"font-weight: 400;\"> Control of range change sequences or management of the counter spindle.<\/span><\/li>\n<\/ul>\n<h3><b>Restoring turning accuracy: the final test<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Every repair on a Biglia lathe concludes with a series of practical work tests. We don&#039;t just check that the machine &quot;moves,&quot; we also verify that it is capable of:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Maintain cylindricity<\/b><span style=\"font-weight: 400;\"> over long distances (bar turning test).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ensure repeatability<\/b><span style=\"font-weight: 400;\"> of the diameter on production batches (thermal stability).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Absorb vibrations<\/b><span style=\"font-weight: 400;\"> during heavy roughing passes.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">This approach guarantees the customer that the repaired lathe is ready to return to the production line immediately without unpleasant surprises.<\/span><\/p>\n<h3><b>Why choose CIIP Cavallari for Biglia CNC lathe repairs?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Choose a <a href=\"https:\/\/www.ciipcavallari.it\/en\/azienda\/\">specialized partner<\/a> This means drastically reducing diagnosis times. We understand the natural &quot;weak points&quot; of the various Biglia models and intervene surgically.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Our philosophy is that of <\/span><b>optimized functional recovery<\/b><span style=\"font-weight: 400;\">We never propose unnecessary replacements, but always seek the technical solution that guarantees the best balance between repair time and the workshop&#039;s financial investment. A properly repaired Biglia lathe is a machine that can operate for another ten or twenty years with the same reliability that made it famous.<\/span><\/p>\n<h3><b>Having trouble with your Biglia lathe?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">If your machine is making unusual noises, struggling to maintain tolerances, or your turret is experiencing frequent alarms, don&#039;t wait for it to fail. <a href=\"https:\/\/www.ciipcavallari.it\/en\/assistenza-macchine-utensili\/\">preventive check and repair<\/a> targeted are the keys to keeping your shop productive and competitive.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>I torni Biglia CNC sono tra i macchinari pi\u00f9 apprezzati nelle officine meccaniche per la loro straordinaria capacit\u00e0 di asportazione e la rigidit\u00e0 strutturale. Chi utilizza un Biglia sa di&#8230;<\/p>","protected":false},"author":2,"featured_media":531,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,6],"tags":[],"class_list":["post-530","post","type-post","status-publish","format-standard","has-post-thumbnail","category-news","category-diagnostica-tecnica"],"_links":{"self":[{"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/posts\/530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/comments?post=530"}],"version-history":[{"count":1,"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/posts\/530\/revisions"}],"predecessor-version":[{"id":532,"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/posts\/530\/revisions\/532"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/media\/531"}],"wp:attachment":[{"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/media?parent=530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/categories?post=530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ciipcavallari.it\/en\/wp-json\/wp\/v2\/tags?post=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}