Method for repairing fractured roller way spindle nose
A repair method and roller table technology, applied in the workpiece edge, welding equipment, metal processing equipment and other directions, can solve the problems of harsh welding process, poor weldability, hardening tendency and crack tendency of welded joints, etc., to avoid welding. The effect of back bending deformation
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[0041] Example 1
[0042] A method for repairing the shaft head of a roller table after it is broken. The shaft head roller body 1 is used to drill the inner hole 2, and one end of the shaft body 3 is processed into a mandrel 4. The mandrel 4 and the hole 2 are matched to form an inlaid structure. The head end is 800mm and the larger roller diameter (φ390) at the distance of 200mm from the breaking position is butt-joined.
[0043] Step one, make the shaft body,
[0044] 1.1) For forgings, place a margin of 8mm-10mm on one side according to the finished shaft diagram.
[0045] 1.2) The quenching and tempering hardness of the forging is HB270-300.
[0046] 1.3) Turn the inner hole on the shaft head roller body 1 Roughness Ra1.6.
[0047] 1.4) Turn the outer circle of the mandrel 4 on the shaft body 3 and the inner hole 2 to Roughness Ra1.6, and V-groove 5 (for ventilation during assembly).
[0048] Step two, welding
[0049] 2.1) After the shaft body 3 and the shaft head roller body 1 ar...
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