电子设计工程
電子設計工程
전자설계공정
Electronic Design Engineering
2015年
19期
47-50
,共4页
速度前瞻%多轴联动%直线加减速%数控系统
速度前瞻%多軸聯動%直線加減速%數控繫統
속도전첨%다축련동%직선가감속%수공계통
velocity look ahead%multi-axis coordination%linear velocity planning%CNC system
在复杂路径的高速加工过程中,容易产生加速度冲击,引起机床振动和工件过切等问题,因此需要提前对加工速度进行优化处理。文章首先利用当量关系对多轴联动数控系统进行分析,然后采用直线加减速对单一路径段进行前加减速处理;最后分析路径段间衔接速度的约束条件,并提出一种速度前瞻控制算法。仿真结果表明,该算法处理后的进给速度平滑连续,有效提高了加工效率。
在複雜路徑的高速加工過程中,容易產生加速度遲擊,引起機床振動和工件過切等問題,因此需要提前對加工速度進行優化處理。文章首先利用噹量關繫對多軸聯動數控繫統進行分析,然後採用直線加減速對單一路徑段進行前加減速處理;最後分析路徑段間銜接速度的約束條件,併提齣一種速度前瞻控製算法。倣真結果錶明,該算法處理後的進給速度平滑連續,有效提高瞭加工效率。
재복잡로경적고속가공과정중,용역산생가속도충격,인기궤상진동화공건과절등문제,인차수요제전대가공속도진행우화처리。문장수선이용당량관계대다축련동수공계통진행분석,연후채용직선가감속대단일로경단진행전가감속처리;최후분석로경단간함접속도적약속조건,병제출일충속도전첨공제산법。방진결과표명,해산법처리후적진급속도평활련속,유효제고료가공효솔。
Impact of acceleration is a common problem in high speed manufacturing for complicated path, causing vibration of machine and overcutting. Velocity planning, therefore, should be carried out in advance. Using equivalent relation, the paper firstly analyzes the coordinated motion of multi-axis CNC systems and linear velocity planning is adopted to handle with a single path. Then constraints on linking velocity between adjacent lines is calculated and accordingly a velocity look-ahead algorithm is presented. Simulation results show that the proposed algorithm can achieve smooth feed velocity. Thus effectively enhances the productivity of manufacturing.