Lead screw for machine tool, has conical rollers maintained in pressure on lead screw by chemically locked nuts, where screw has nut whose body includes bores arranged in helix equal to pitch of lead screw

摘要

The lead screw (7) has conical rollers (6) maintained in pressure on the lead screw by chemically locked nuts (3), where the screw has screw threads whose bases are disengaged. The rollers are rotated in needle bearings (2, 4), where the screw includes a nut (1) whose body has bores arranged in a helix equal to the pitch of the lead screw. The nuts (3) support the needle bearings (2) on rings through balls (5).