Collision-free and smooth path generation method of five-axis ball-end milling considering effective tool diameter change

Lu, Yaoan; Chen, Shou‐Feng; Wang, Chengyong

doi:10.1016/j.jmapro.2022.10.011

Cited by 7 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further, the lead angle and tilt angle should be adjusted to avoid global collisions, which has been widely discussed [16,19].…”

Section: Ppmentioning

confidence: 99%

“…For example, Bi et al [18] adopted the Dijkstra algorithm to minimize the derivatives of two rotary angles along the toolpath. Lu et al [19] combined greedy algorithm-based rough search and Dijkstra algorithm-based fine search to generate smooth tool orientations more efficiently. Nevertheless, as the tool orientations are not adjusted continuously, the generated toolpath is only an approximate solution.…”

Section: Introductionmentioning

confidence: 99%

“…In ball-end milling, the effective tool diameter and its change rate can influence the machining quality and tool life by affecting the cutting speed [33,34]. Thus, it's desired to consider both the toolpath smoothness index and effective tool diameter during tool orientation planning [19,22]. Two strategies are widely used to solve such multi-objective optimization problems.…”

Section: Introductionmentioning

confidence: 99%

“…One solution is introducing additional constraints to reflect the user demands [15,22]. To prevent situations where the optimization problem has no feasible solution, the weighted sum method can be used to solve multi-objective optimization problems with soft constraints adopted instead of hard constraints [19,35]. Specific analysis is required in the optimization problem establishment and solution for computation efficiency.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinematic performance-oriented tool orientation optimization for a hybrid machining robot in five-axis ball-end milling

Zhang,

Shi,

Ding

2024

Preprint

View full text Add to dashboard Cite

Five-axis hybrid robots are more extensively used in the machining of complex parts, owing to their high dynamic performance and flexible attitude adjustment. Ball-end milling is widely used in sculptured surface machining. Tool orientations can be adjusted for higher machining efficiency and better cutting performance. However, hybrid robots’ complex kinematic structures raise challenges to tool orientation planning. To generate a smooth toolpath that has a good cutting performance and satisfies all the geometric and mechanical constraints, a tool orientation optimization model is presented. The weighted sum of the joint kinematic performance index and the effective tool diameter indexes are taken as the objective function. By constructing the robot workspace in advance, the computation in the generation of feasible tool orientation regions is reduced. The feasible orientation regions are further simplified as linear inequality constraints which are updated during iteration. In each iteration, the initial nonconvex optimization problem is locally approximated by a convex problem and solved by quadratic programming (QP). Simulations and experiments are conducted for validation of the proposed method.

show abstract

“…Further, the lead angle and tilt angle should be adjusted to avoid global collisions, which has been widely discussed [16,19].…”

Section: Ppmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%