B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 31/117 (2006.01)
Patent
CA 2754285
A chuck (30; figure 1) for clamping an article (32; figure 1) has a receiving portion (34) including a receiving bore (42) having a longitudinal axis (L), and a radially inwardly facing contoured clamping and receiving inner surface (44). A clamping sleeve (50) is accommodated in the receiving bore (42) and is rotatable between a releasing position (figure 9) and a securing position (figure 10). The contoured clamping and receiving surface (44) has one or more clamping segments (82, 82', 82' '; figure 7) each clamping segment (82) having a ramp (88; figure 8) between a trough (86; figure 8) and a crest (90; figure 8), a second ramp (92; figure 8) between the crest (90) and a depression (94; figure 8), and a third ramp (96; figure 8) between the depression (94) and the succeeding stop ridge (84'; figure 8). Rotating the clamping sleeve (50) within the receiving bore (42) causes one or more rollers (52) associated with each clamping segment to cooperate with the contoured clamping surface (44) to effect the releasing and the securing of the article (32).
L'invention porte sur un mandrin (30 ; figure 1) pour serrer un article (32 ; figure 1), lequel mandrin comporte une partie de réception (34) comprenant un alésage de réception (42) ayant un axe longitudinal (L), et une surface interne de réception et de serrage profilée et dirigée radialement vers l'intérieur (44). Un manchon de serrage (50) est reçu dans l'alésage de réception (42) et est rotatif entre une position libérée (figure 9) et une position de fixation (10). La surface de réception et de serrage profilée (44) comporte un ou plusieurs segments de serrage (82, 82', 82' '; figure 7), chaque segment de serrage (82) étant pourvu d'une rampe (88 ; figure 8) entre un creux (86 ; figure 8) et une crête (90 ; figure 8), d'une deuxième rampe (92 ; figure 8) entre la crête (90) et un renfoncement (94 ; figure 8), et d'une troisième rampe (96 ; figure 8) entre le renfoncement (94) et l'arête d'arrêt suivante (84' ; figure 8). La rotation de manchon de serrage (50) à l'intérieur de l'alésage de réception (42) amène un ou plusieurs rouleaux (52) associés à chaque segment de serrage à coopérer avec la surface de serrage profilée (44) pour effectuer la libération et la fixation de l'article (32).
Dimock Stratton Llp
Iscar Ltd.
LandOfFree
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