一般工件在空间未定位时，有六个自由度，X\Y\Z三个线性位移自由度和与其对应的啊A\B\C三个旋转位移自由度。六个自由度通常用笛卡尔直角坐标系的X\Y\Z来表达三个线性轴，用与其对应的A\B\C来表达三个旋转轴。诸如多轴数控机床，也就是加工中心在设计时，需要根据加工对象规划设置轴数。市面比较常见的是三轴数控加工中心，其具有X\Y\Z三个线性位移轴。所谓四轴加工中心一般是加了一个旋转轴，通常称为第四轴。相应的加工中心就是四轴加工中心。

　　","abstract":"一般工件在空间未定位时，有六个自由度，X...","create_time":1586616976,"update_time":1674711276,"digg_info":{"digg_count":0,"own_digg":false,"digg_list":null},"comment_info":{"comment_count":0,"ban_comment":false},"repost_info":{"repost_count":0},"audit_info":{"audit_status":-1,"audit_status_msg":"","audit_status_msg_desc":""},"pv":0,"vl":65,"content_with_entity":"","extra":{"from_wukong":"1","group_decay_type":"9","modify_time":"1674711276","propedit_review_visibility":"{"prop_name":"review_visibility","prop_value":"40","confidence":11,"editor":"content.online_cloud.flash_items","reason_code":0,"reason_message":null,"edit_time":null}","reviewed_level":"11","ugc_shark_decision":"{"Decision": "PASS", "DecisionDetail": "", "HitStatus": "{\"27821\":{\"decision\":\"MARK\",\"decision_detail\":\"\"},\"2176\":{\"decision\":\"MARK\",\"decision_detail\":\"\"}}"}","wd_source":"question_click_write_answer","wdh_client_ip":"120.229.127.153"},"integral_order_list":null,"integral_count":0,"bury_info":{"bury_count":0,"own_bury":false},"sent_flower_status":0,"could_show_flower_text":false,"author_digg_count":0,"author_show_digg_status":false,"ban_comment":false,"relation_info":{"is_following":false},"user_status":{"is_cancelled":false,"is_banned":false},"feedback_user_not_acted_aid":true,"help_info":{"is_helpful_count":0,"own_is_helpful":false},"action_info":{"digg_info":{"digg_count":0,"own_digg":false,"digg_list":null},"bury_info":{"bury_count":0,"own_bury":false},"help_info":{"is_helpful_count":0,"own_is_helpful":false},"comment_info":{"comment_count":0,"ban_comment":false},"repost_info":{"repost_count":0},"forite_info":{"is_forited":false}},"is_selected_answer":0},{"qid":"6717449664167149836","aid":"6718537741006536968","uid":"505375231580076","uname":"翻转六年","atar_url":"https://p1.toutiaoimg.com/img/3796/2975850990~0x0.image","auth_info":"","content":"

　　四轴数控一般指的是四轴加工中心，一般的机床只有三轴也就是工件平台能左右（1轴）前后（2轴）主轴刀头（3轴）移动，用于切削工件，第四轴就是在移动的平台上加装一个可以360度旋转的电动分度头！这样可以自动分度打斜孔，铣斜边等等，而不用二次装夹流失精度。加装一个第四轴的市场价格大概4万块左右。希望可以帮到你！