Rapid getting-on correcting method of large-scale diesel engine rack on gantry milling machine

Abstract

The invention provides a rapid getting-on correcting method of a large-scale diesel engine rack on a gantry milling machine. The rapid getting-on correcting method comprises that wherein X, Y and Z coordinate processing lines, a waist line, a workpiece center line and a workpiece zero position reference line are marked by adopting a laser reference scribing method, and further, a keel milling table top mark, a positioning and positioning groove, a positioning and supporting stop block, a positioning key, a reference alignment tool block, an adjusting cushion block, a correcting block, a reference measuring block and a machine frame laser scribing technical measure are further adopted on numerical control keel milling, so that the machine frame is guaranteed to be rapidly corrected, and coordinate setting is completed. The method has the advantages of being easy to operate, safe, efficient and convenient to adjust, and has the beneficial effects of reducing the machine frame getting-oncorrecting time and reducing the labor intensity of workers, and the rapid getting-on correcting method is particularly suitable for on-line correction, positioning and coordinate setting of large-scale diesel engine racks and similar large-scale parts on the numerical control keel milling.

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 ...

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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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