| 摘要 |
The invention relates to a guide pad for a cutting tool, the guide pad (8) having two opposite located main surfaces (14) and being symmetrically formed, the guide pad further comprising two longitudinal side surfaces (15) and four sliding surfaces (11), two on each main surface, which are located in sequence along a longitudinal axis (13) of the guide pad, and which are convexly curved as viewed in a plane perpendicular to the longitudinal axis. Each sliding surface (11) comprises a fluid conveying formation (22, 24, 32, 34), having a bottom surface (23) and a longitudinal extension in parallel to the longitudinal axis (13), which separates each sliding surface (11) into two convexly curved sliding sub-surfaces (11'). The guide pad also comprises two bearing surfaces (27), along each longitudinal side surface (15) of the guide pad (8), which are located on a respective side of and facing away from a median plane (17) halfway between the main surfaces (14) and having at least some extension in the direction of the median plane perpendicular to the longitudinal axis (13), wherein the bearing surfaces and a bottom surface of the fluid conveying formation are located between the median plane and an imaginary circle arc having the smallest radius of curvature that simultaneously can co-tangentially contact each of the sub surfaces at arbitrary contact points. The invention also relates to a cutter head for such guide pads. |
