Machining method of support tube in large-scale track forging manipulator

Abstract

The invention discloses a machining method of a support tube in a large-scale track forging manipulator, comprising the following steps of: firstly, segmentation rough finishing: respectively rough turning a tube head hole and a tube tail hole based on size requirements, and turning and butting to weld roots of connecting ends of a tube head, a tube body and a tube tail, wherein the pore diameters of the tube head hole and the tube tail hole are both no less than 1.7 m; secondly, welding every two segments to form a whole body; thirdly, semi-finishing: rough and fine milling both end surfaces of a workpiece to enable the both end surfaces to be parallel, and respectively arranging a technological steel plate as an alignment and measurement datum plane on the same side surface and the same top surface of both end holes; and fourthly, fine finishing. The invention can be used for machining the support tube with the diameter of bearing holes at both ends being no less than 1.7 m by adopting a machining cutter head for a large diameter hole and can ensure the axiality position accuracy of the bearing holes at both ends of the support tube by utilizing the alignment and measurement datum plane.

Description

technical field [0001] The invention relates to a metal cutting processing technology, in particular to a processing method for a support pipe in a large rail forging manipulator. Background technique [0002] The 2500KN / 6300KN·m rail forging manipulator is the auxiliary equipment matched with the 165MN free forging hydraulic press. The support tubes in this large rail forging manipulator are as figure 1 As shown, its total length is 8415mm, and both ends have bearing holes with a diameter of Φ2300 / Φ2060H7 and a depth of 580mm, and a diameter of Φ2075 / Φ1900H7 / Φ1880H8 and a depth of 460mm. The total length of both ends of the bearing hole is 8200mm. The material of the support pipe is ZG20SiMn steel casting, which is welded by three sections of pipe head, pipe body and pipe tail respectively after rough machining. The net weight of the parts is 126.366 tons. The large-diameter bearing holes at both ends of the support tube are used to install large-scale bearings, and the i...

AI Technical Summary

Problems solved by technology

The diameter of the bearing holes at both ends of the support tube is about two meters, and the coaxiality error of the bearing holes at both ends is required to be no more than 0.1 mm, so the prior art has no experience for reference.

Images