Grinding tool kit, apparatus and method for finish machining of rolling surface of bearing roller

A grinding tool kit for finish machining of a rolling surface of a bearing roller, comprising a grinding sleeve (21) and a grinding strip assembly, wherein:

• during grinding machining, the grinding sleeve (21) is coaxial with the grinding strip assembly, and the grinding strip assembly penetrates through the grinding sleeve (21);
• an inner surface of the grinding sleeve (21) is provided with one or a plurality of first spiral grooves (211);
• the grinding strip assembly comprises at least three grinding strips (22) distributed in a circumferential columnar array, a surface of each grinding strip (22) opposite to the inner surface of the grinding sleeve (21) is a front surface of the grinding strip (22), the front surface of each grinding strip (22) is provided with one grinding strip groove (22) penetrating through the grinding strip (22) along a length direction of the grinding strip (22), and the grinding strip groove is a linear groove (221) or a second spiral groove;
• and the first spiral groove (211) and the second spiral groove are both cylindrical spiral grooves;
• a surface of the first spiral groove (211) comprises a working surface (2111) of the first spiral groove in contact with a bearing roller to be machined during grinding machining, and a surface of the grinding strip groove comprises a working surface of the grinding strip groove in contact with the bearing roller during grinding machining;
• during grinding machining, one bearing roller is distributed at each intersection of the first spiral groove (211) and the grinding strip groove;
• corresponding to each intersection, an area enclosed by the working surface (2111) of the first spiral groove and the working surface of the grinding strip groove is a grinding machining area;
• the grinding strip assembly and the grinding sleeve (21) rotate relatively around an axis (223) of the grinding strip assembly, and simultaneously, the grinding strip assembly and the grinding sleeve (21) make relative reciprocating linear motion along the axis (223) of the grinding strip assembly or make relative reciprocating spiral motion around the axis (223) of the grinding strip assembly, or make no relative reciprocating motion, and the grinding strip (22) applies a working pressure to the bearing roller distributed in the first spiral groove (211) along a radial direction of the grinding strip assembly;
• the bearing roller is in contact with the working surface (2111) of the first spiral groove and the working surface of the grinding strip groove respectively in the grinding machining area;
• the bearing roller rotates around an axis of the bearing roller under a friction drive of the working surface (2111) of the first spiral groove or the working surface of the grinding strip groove, and simultaneously moves along the first spiral groove (211) and the grinding strip groove respectively under a pushing action of the working surface of the grinding strip groove and the working surface (2111) of the first spiral groove, and the rolling surface (32) of the bearing roller slides relative to the working surface (2111) of the first spiral groove and the working surface of the grinding strip groove, so that grinding machining of the rolling surface (32) is realized;
• and when the grinding strip groove is the linear groove (221), the working surface of the grinding strip groove is a working surface (2211) of the linear groove, and when the grinding strip groove is the second spiral groove, the working surface of the grinding strip groove is a working surface of the second spiral groove;
• the working surface (2111) of the first spiral groove is on a scanning surface (2112) of the first spiral groove, the scanning surface (2112) of the first spiral groove is a scanning surface with equal section, and the working surface (2111) of the first spiral groove is continuous or discontinuous;
• and the bearing roller is taken as a scanning outline A of solid scanning of the scanning surface (2112) of the first spiral groove, a scanning path A of the scanning surface (2112) of the first spiral groove is a cylindrical helix, the scanning path A passing through a geometric reference point on an axis (32) of the bearing roller is denoted as a cylindrical helix A (2121), the cylindrical helix A (2121) is on a first cylindrical surface, and an axis of the cylindrical helix A (2121) is an axis of the grinding sleeve (21);
• the working surface of the grinding strip groove is on a scanning surface of the grinding strip groove, the scanning surface of the grinding strip groove is a scanning surface with equal section, and the working surface of the grinding strip groove is continuous or discontinuous;
• when the grinding strip groove is the linear groove (221), the scanning surface of the grinding strip groove is a scanning surface of the linear groove, the bearing roller is taken as a scanning outline B1 of solid scanning of the scanning surface of the linear groove, a scanning path B1 of the scanning surface of the linear groove is a straight line parallel to an array axis of the grinding strip assembly, the scanning path B1 passing through the geometric reference point is denoted as a straight line B (2221), a distance from the straight line B (2221) to the array axis is an array radius, and the array axis is an axis of the grinding strip assembly;
• when the grinding strip groove is the second spiral groove, the scanning surface of the grinding strip groove is a scanning surface of the second spiral groove, the bearing roller is taken as a scanning outline B2 of solid scanning of the scanning surface of the second spiral groove, a scanning path B2 of the scanning surface of the second spiral groove is a cylindrical equidistant helix, the scanning path B2 passing through the geometric reference point is denoted as a cylindrical helix B (2222), and the cylindrical helix B is on a second cylindrical surface;
• an axis of the cylindrical helix B (2222) is the array axis of the grinding strip assembly, a radius of the cylindrical helix B (2222) is an array radius of the grinding strip assembly, and the array axis is the axis of the grinding strip assembly;
• and a normal section of the linear groove (221) is a plane perpendicular to the straight line B (2221), and a normal section of the second spiral groove is a plane perpendicular to a tangent of the cylindrical helix B (2222) and passing through a point of tangency of the tangent;
• and
• during grinding machining, the array radius is equal to a radius of the cylindrical helix A (2121).