Inclined plane hole alignment tool and orientation method for drilling cooling water hole on cylinder cap

Abstract

The invention relates to an orientation tool for drilling on an inclined surface, structurally comprising a Morse core shaft, cross shafts, an adjusting copper sleeve, a line finding plate, an axle sleeve, rollers and retaining rings at shaft ends. The upper part of the Morse core shaft is a Morse taper shank, the lower part is a forked body which is opened with cross shaft holes, and the axis line of the Morse taper shank is vertical to and intersects with that of the cross shaft holes; the cross shafts pass through the cross shaft holes in the Morse core shaft, the cross shaft at the inner side of the forked body is provided with the adjusting copper sleeve and the line finding plate, and the cross shaft at the outer side of the forked body is symmetrically provided with two rollers; the plane of the vertical cross shaft on the line finding plate which locates in an knife edge part is a vertical reference plane, while the plane which is parallel with the cross shafts is a parallel reference plane; the intersection lines of the vertical reference plane and the parallel reference plane are a knife edge line, and the line finding plate can rotate freely within 180 DEG on the cross shafts. The orientation tool for drilling on the inclined surface of the invention has the advantages of simple structure, low cost, high precision of direction spotting and convenient and rapid operation and can meet the precision requirement of work-piece inclined hole processing.

Description

technical field [0001] The invention relates to the field of machining, and is used for direction alignment before machining inclined-plane holes by common radial drilling machines, in particular, an inclined-plane drilling orientation tool suitable for direction alignment before drilling cooling water holes of cylinder heads of marine low-speed diesel engines. And the orientation method when using the orientation tool to process the cooling water hole of the cylinder head of the marine low-speed diesel engine. Background technique [0002] In the machining industry, it is often encountered that ordinary radial drilling machines need to process inclined holes on disc-shaped or cylindrical workpieces. According to the 6-point positioning principle of workpieces, the common feature of disc-shaped or cylindrical workpieces is the lack of restrictions on the degree of freedom of rotation around their axis, that is, the lack of positioning references in their circumferential dire...

AI Technical Summary

Problems solved by technology

[0007] The problem caused by the method of leveling the horizontal centerline with a stylus is that if none of the cooling water holes is exactly on the cross centerline of the cylinder head, it is necessary to preset a drilling alignment point on the cross centerline, only When the drill tip is aligned with the drilling alignment point and the drill rod is locked, the turntable can be turned to the drill point to align with the real drilling position, which is prone to quality accidents caused by the operator accidentally drilling at the alignment point

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