Abstract: A generally rectangular, elongated, rotary cutting blade work piece which is to be sharpened on oppositely facing, opposite end portions is conveyed on a flat horizontal path in direction transverse to its longitudinal axis through a grinding and deburring apparatus. Passage of the work piece through the apparatus is interrupted periodically to position it serially at four work stations. At each station it stops, is precisely positioned, held firmly, and worked on. At a first station it is brought into contact with a belt grinder which sharpens a first of the rotary leading outer end portions of the blade by removing material from it. At a second station this ground portion is brought into contact with a rotary deburring member. At a third station the work piece is brought into contact with a belt grinder to sharpen a second, oppositely facing, rotary leading outer edge portion. At a fourth station, the portion just ground is brought into contact with a deburring member.

Abstract: A generally rectangular, elongated, rotary cutting blade work piece which is to be sharpened on oppositely facing, opposite end portions is conveyed on a flat horizontal path in direction transverse to its longitudinal axis through a grinding and deburring aaparatus. Passage of the work piece through the apparatus is interrupted periodically to position it serially at four work stations. At each station it stops, is precisely positioned, held firmly, and worked on. At a first station it is brought into contact with a belt grinder which sharpens a first of the rotary leading outer end portions of the blade by removing material from it. At a second station this ground portion is brought into contact with a rotary deburring member. At a third station the work piece is brought into contact with a belt grinder to sharpen a second, oppositely facing, rotary leading outer edge portion. At a fourth station, the portion just ground is brought into contact with a deburring member.