초록 ▼

A skate sharpening apparatus is disclosed having top surface (20) and a grinding disc (21) rotatable about a vertical axis above the surface. A bearing body (23, 28) having a free slide support (23) and a blocking section (28) is secured to the surface (20) slidably supports a guide bar (24). The bl

A skate sharpening apparatus is disclosed having top surface (20) and a grinding disc (21) rotatable about a vertical axis above the surface. A bearing body (23, 28) having a free slide support (23) and a blocking section (28) is secured to the surface (20) slidably supports a guide bar (24). The blocking section (28) can be selectively fixed to or released from the guide bar. It is connected to the support (23) by an adjusting device moving the section (28) relative to the support (23) in fine increments. The front end (24b) of the guide bar (24) carries a pivot (34) supporting a lateral arm (35) for swinging about a horizontal swing axis (34a). The free end (36) of the lateral arm (35) carries a dressing tool (37, 37a) with rearwards directed dressing tip. The tool is slidable but can be fixed relative to the free end (36). The calibration of the desired radius of dressing the disc (21) is effected by abutting the dressing tip (38) against the disc (21) while the tip (38) coincides with the swing axis (34a) and then sliding the guide bar (24) by a distance corresponding to the desired radius and then fixing again the tool (37) to the free end (36). A digital or mechanical scale (27) at the support (23) is used in this adjustment. The invention presents an improved dressing tool where the measuring and adjusting elements are removed from the area where the debris released by the dressing might soil them. The caliration of the dressing radius is simpler than in previously known devices.

대표청구항 ▼

[ I claim:] [1.] Apparatus for dressing a peripheral portion of a grinding disc comprising, in combination:(a) a bearing body including a free slide support and a blocking section, said bearing body slidably receiving a guide bar for sliding of the guide bar along a longitudinal axis;(b) an adjustin

[ I claim:] [1.] Apparatus for dressing a peripheral portion of a grinding disc comprising, in combination:(a) a bearing body including a free slide support and a blocking section, said bearing body slidably receiving a guide bar for sliding of the guide bar along a longitudinal axis;(b) an adjusting device operatively associated with said bearing body and with said guide bar to selectively adjust longitudinal position of the guide bar relative to the slide support by fine increments in the range of accuracy of about ten thousandths of an inch or more;(c) a lateral arm pivotably secured to a front end portion of said bar by a pivot for swinging the arm about a swing axis generally perpendicular said longitudinal axis;(d) a free end portion of the lateral arm remote from said pivot supporting a dressing tool including a dressing tip at a location laterally spaced from said longitudinal axis;(e) dressing radius calibrating means operatively associated with said free end portion for selectively adjusting and fixing the distance of the dressing tip from said swing axis to calibrate the radius circumscribed by said dressing tip at the circumference of an associated grinding disc.