Motion control apparatus

B - Operations – Transporting – 23 – Q

Patent

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Details

B23Q 1/28 (2006.01) F16D 63/00 (2006.01) F16D 65/14 (2006.01)

Patent

CA 2667632

A linear motion brake (10) includes a channel shaped shoe guide (90) straddling a linear race (20) and having shoe bores (95) defined in leg plates (92) for receiving brake shoes (12). A piston (100) is reciprocally received in a piston cavity (86) of a plate-shaped housing (80) secured to the shoe guide (90). The piston (100) includes first and second protrusions (76, 134) extending from the piston head (102) in the reciprocation direction. Springs (114) are sandwiched between the shoe guide (90) and the piston (100). Ribs (116) of the piston (100) are slideably received in cutouts (96) formed in the connecting plate (94) of the shoe guide (92). Reciprocation of the protrusions (76, 134) cams the brake shoes (12) against the linear race (20).

La présente invention concerne un frein pour mouvement linéaire (10) comportant un guide de patin en forme de canal (90) chevauchant un chemin linéaire (20) et comprenant des alésages de patin (95) définis dans des plaques de support (92) pour recevoir des patins de frein (12). Un piston (100) est reçu en un mouvement de va-et-vient dans une cavité de piston (86) d'un boîtier en forme de plaque (80) solidaire du guide de patin (90). Le piston (100) comporte des première et seconde saillies (76, 134) s'étendant depuis la tête de piston (102) dans la direction de mouvement en va-et-vient. Des ressorts (114) sont enserrés entre le guide de patin (90) et le piston (100). Des nervures (116) du piston (100) sont reçues en coulissement dans des découpes (96) formées dans la plaque de connexion (94) du guide de patin (90). Le mouvement en va-et-vient des saillies (76, 134) entraîne les patins de frein (12) contre le chemin linéaire (20) à la manière d'une came.

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