{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11534880","patent":{"patent_number":"US-11534880","title":"Control apparatus of machine tool including spindle axis and feed axis","assignee":null,"inventors":[],"filing_date":"2020-04-06T00:00:00.000Z","publication_date":"2022-12-27T00:00:00.000Z","cpc_codes":["B23Q","G05B","B23Q","G05B","G05B","G05B","G05B","G05B"],"num_claims":3,"abstract":"A control apparatus of a machine tool including a feed axis, which is driven by a feed axis motor, includes a load torque estimation unit configured to estimate a load torque acting on a spindle motor, based on a torque command to the spindle motor which drives a spindle axis of the machine tool, and a speed of the spindle motor; and a speed control unit configured to control a speed of a feed axis motor such that the load torque estimated by the load torque estimation unit follows a prescribed load torque target value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Control apparatus of machine tool including spindle axis and feed axis","description":"A control apparatus of a machine tool including a feed axis, which is driven by a feed axis motor, includes a load torque estimation unit configured to estimate a load torque acting on a spindle motor","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11534880","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11534880","citation_suggestion":"Patentable. \"Control apparatus of machine tool including spindle axis and feed axis\" (US-11534880). https://patentable.app/patents/US-11534880","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11534880","json":"https://patentable.app/api/llm-context/US-11534880","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T10:19:34.084Z"}