High-force linear motor assembly using tandem axes

H - Electricity – 02 – K

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Details

H02K 41/02 (2006.01) B23Q 1/40 (2006.01) B23Q 5/28 (2006.01)

Patent

CA 2101407

A linear motor assembly having enhanced mechanical stiffness, comprising: (a) at least one pair of rigidly interconnected tandem rails defining a first axis of movement and spaced apart normal to such first axis; (b) at least one pair of frames movable along said pair of rails, each frame presenting at least one pair of opposed parallel bearing surfaces; (c) at least one linear motor effective to operate between each rail and frame; (d) bearings supported between each rail and each bearing surface of each frame, said bearings being preloaded with an interference load while permitting bearing movement; and (e) support structure between said frames defining axes of movement actuated by other linear motors.

Montage de moteur linéaire à rigidité mécanique améliorée, comprenant : (a) au moins une paire de rails en tandem accouplés de manière rigide définissant un premier axe de déplacement et espacés normalement de ce dernier; (b) au moins une paire de cadres mobiles le long de la paire de rails, chaque cadre présentant au moins une paire de surfaces de roulement opposées parallèles; (c) au moins un moteur linéaire pouvant fonctionner entre chaque rail et chaque cadre; (d) des coussinets soutenus entre chaque rail et chaque surface de roulement de chaque cadre, ces coussinets étant préchargés avec une charge d'interférence tout en permettant un roulement; et (e) une structure de soutien entre les cadres définissant des axes de déplacement actionnés par d'autres moteurs linéaires.

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