Device and method for profiling grinding worms
AssigneeReishauer AG
InventorGiorgio Scacchi
Life of this patent
Estimating the term…
Abstract
A radius-forming dressing roll (32) having a frustoconical working region (48) and an adjoining concave-toroidal working region (49) is mounted on the dressing spindle (30) coaxially to a dressing disc (31). In a first step, the flanks (42, 43) of the grinding-worm thread are profiled with the disc (31). After the dressing spindle (30) has been pivoted, the two tip radii (46, 47) and the cylindrical outer circumference (45) are profiled with the dressing roll (32). With little resetting effort and high flexibility, the method permits profiling with short dressing times.
Claims10
Device for profiling a thread of a grinding worm (11) for the continuous generation grinding of gears, comprising a grinding spindle (16) with a grinding spindle axis (15), a grinding worm (11) being mounted on the grinding spindle (16), a dressing spindle (30) on which a first dressing tool (31) for dressing flanks (42, 43) of the grinding worm thread is mounted, two slides (12, 20) with which the dressing spindle (30) can be fed in radially relative to the grinding spindle (16) and is traversable parallel to the grinding spindle axis (15), and a rotary table (26) which is pivotable about an axis (25) perpendicular to the grinding spindle axis (15) and on which the dressing spindle (30) is rotatably mounted, characterized in that a second dressing tool (32, 50) for dressing tip radii (46, 47) and a circumference (45) of the grinding worm thread is additionally pivotable with the rotary table (26), and in that the first and second dressing tools (31, 32, 50) can be brought into engagement with the grinding worm (11) one after the other by pivoting of the rotary table (26) and displacement by means of the slides (12, 20).
Method of profiling a thread of a grinding worm (11) for the continuous generation grinding of gears, a dressing spindle (30), relative to a grinding spindle (16) on which the grinding worm (11) is mounted, being traversable parallel and perpendicularly to a grinding spindle axis (15), and a first dressing tool (31) which is coated with hard-material grains and with which flanks (42, 43) of the grinding worm thread are profiled being fastened to the dressing spindle (30), the dressing spindle (30) additionally being pivotable relative to the grinding spindle (16) about a pivot axis (25) perpendicular to the grinding spindle axis (15), characterized in that a second dressing tool (32, 50) which is pivoted together with the dressing spindle (30) relative to the grinding spindle (16) is used, in that a tip region (45-47) of the grinding worm thread is profiled with the second dressing tool (32, 50), and in that the flanks (42, 43) and the tip region (45-47) are profiled in successive steps.
Dependencies are inferred from the claim text.