Method of fast loading and correction of large diesel engine frame on gantry milling machine

Abstract

A method for quickly loading and correcting a large diesel engine frame on a gantry milling machine, comprising: marking the X, Y, and Z coordinate processing lines, waistlines, and workpiece centerlines of the frame by using a laser reference marking method before loading the frame and the zero reference line of the workpiece, and further adopt the milling table surface engraving and milling positioning groove on the CNC dragon milling, install the positioning support stopper, positioning key and reference tool setting block, place the adjustment pad, calibration block and reference measuring block The technical measures of laser scribing of blocks and racks ensure fast correction of racks on the vehicle and complete coordinate setting. The invention has the advantages of simple operation, safety, high efficiency, and convenient adjustment, and has the beneficial effects of reducing the correction time on the frame and reducing the labor intensity of workers, and is especially suitable for large-scale diesel engine frames and similar large-scale parts on CNC dragon milling. On-board calibration, positioning and coordinate setting.

Description

technical field [0001] The invention relates to a manufacturing process of large diesel engine parts, in particular to a method for quickly loading and correcting a large diesel engine frame on a gantry milling machine, and belongs to the technical field of diesel engine manufacturing. Background technique [0002] The frame is one of the important parts of a large marine diesel engine. It is a welded structural part with complex structure, large size and heavy weight. The frame has an upper plane, a middle plane, a lower plane, positive guide plates, side guide plates, shaft head holes and door frame surfaces. There are many positive guide plates, side guide plates, and transverse partitions that are parallel or perpendicular to each other in the inner cavity of the frame. Strict tolerance requirements, large size, large overhang, easy to deform, very difficult to correct on the car, and troublesome to find the coordinate datum. [0003] The original calibration method on ...

AI Technical Summary

Problems solved by technology

[0002] The frame is one of the important parts of large marine diesel engines. It is a welded structural part with complex structure, large size and heavy weight.

The frame has an upper plane, a middle plane, a lower plane, positive guide plates, side guide plates, shaft head holes and door frame surfaces, and many positive guide plates, side guide plates, and transverse partitions that are parallel or perpendicular to each other are arranged in the inner cavity of the frame. Strict tolerance requirements, large size, large overhang, easy to deform, very difficult to correct on the car, and troublesome to find the coordinate datum

[0003] The original method of loading and correcting is to load the frame squarely, punch the mark according to the original sample of the blank, and measure the machining allowances, align and set the zero position of the machining reference in combination with the pull table; the original method has troublesome adjustments, Time-consuming, labor-intensive, high-climbing operation risks, large errors, frequent turning over of the rack, high labor intensity of workers, etc.

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