Identification and compensation of position-dependent geometric errors of rotary axes on five-axis machine tools by using a touch-trigger probe and three spheres

Synchronous measurement and verification of position-independent geometric errors and position-dependent geometric errors in C-axis on mill-turn machine tools

“…There are 6 items of PDGEs. From previous researches [8,[17][18][19], it can be found that these documents only measure the PIGEs of the rotary axis, and it can be observed from other documents that they mainly analyze the PDGEs of the rotary axis [20][21][22]. However, the PIGEs and the PDGEs affect the rotary axis of the machine tools at the same time, so this paper hopes to consider the PDGEs into the calculation of the PIGEs simultaneously.…”

Vision-based measurement for decoupling identification of geometric errors of rotating axes for five-axis platform

“…In recent years, researchers have proposed a variety of indirect measurement methods for geometric errors of rotation axes, such as R-test measurement [17,18], ballbar measurement [12,13,19,20], and probing measurement based on standard parts measurement [21,22]. In [23] a six-circle technology with ballbar was established, as well as 10 geometric errors for each rotation axis were identified, based on the characteristics of the geometric error terms.…”

“…Since PIGEs of a rotation axis account for a large part of its geometric errors [26,27], most of the existing studies have focused on PIGEs of rotation axes [1-4, 11, 24, 25, 28-30]. In addition, some of the studies independently explore PDGEs error sources [9,20,22,31]. However, the unrelated identification of one of these two geometric error sources lacks the discussion of the coupling mechanism between PIGEs and PDGEs.…”

Study on the influence of geometric errors in rotary axes on cubic-machining test considering the workpiece coordinate system

“…PDGEs are the undesired positional or angular motions of each axis, and many research achievements so far have focused on PDGEs. Chen et al [7] used a touch-trigger probe and three spheres to identify and compensate the 12 PDGEs of rotary axes, and their results showed that the error can be reduced by more than 97%.…”

“…These achievements indicate that there are six DOFs of PDGEs to which all types of error sources contribute, such as servo-tracking errors or fluctuations during feed motions. Thus, PDGEs are not the original geometric errors between each segment [7,8,9]. Therefore, PDGEs are referred to as error motions rather than geometric errors in ISO 230-1 [10],…”