A scribing method for the blank inner cavity of a large single-cylinder diesel engine frame

Abstract

The invention discloses a lineation method for an inner cavity of a machine base blank of a large single-cylinder diesel engine. A set of main bearing holes and four sets of gear holes are formed in the inner cavity of the machine base blank. The center axes of the four sets of gear holes are parallel to the center axes of the main bearing holes. The center axes of the four sets of gear holes are symmetrically distributed in an isosceles trapezoid manner along the longitudinal space. The lineation method is characterized in that on the premise that the machining allowance is guaranteed, the three-dimensional space three-dimensional inner cavity lineation task is finished based on the three-dimensional space operation of the inner cavity isosceles trapezoid and the operation of the two lineation positions and the deviation auxiliary line of the center axes of the main bearing holes, the center axes, meeting the requirement, of the main bearing holes and the four sets of gear holes, hole circle machining lines, meeting the requirement, of the main bearing holes and gear holes, and the appearance outline machining line, meeting the requirement, of a machine base are lined out, and a machine tool program is instructed to machine the gear holes and the main bearing holes. According to the lineation method, the production cost is reduced, and the safety and quality accidents are avoided. The lineation method has the beneficial effects of being easy and convenient to operate and high in lineation precision and is suitable for lineation operation of the inner cavity of the machine base blank of the single-cylinder diesel engine and inner cavities of similar components.

Description

technical field [0001] The invention relates to a manufacturing process method for large diesel engine components, in particular to a method for marking the inner cavity of a large single-cylinder diesel engine base blank that can guide a machine tool processing program to run an instruction track in the inner cavity of a large blank part, and belongs to the diesel engine manufacturing technology field. Background technique [0002] The frame is an important part of a single-cylinder large diesel engine, and the main feature of its structure is the inner cavity. see figure 1 A three-dimensional view of a single-cylinder diesel engine base. A set of main bearing holes and four sets of gear holes are provided in the inner cavity of the single-cylinder diesel engine base. The set of main bearing holes is located in the middle of the base, including front and rear distribution. At least two coaxial main bearing holes, the four groups of gear holes are located at the lower part...

AI Technical Summary

Problems solved by technology

However, the traditional method is cumbersome and time-consuming, with high cost, poor safety and low marking accuracy

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