Processing tool and processing method of inner hole of oil pump hole for engine body

Abstract

The invention provides a processing tool and a processing method of an inner hole of an oil pump hole for an engine body. The processing tool of the inner hole of the oil pump hole for an engine comprises a horizontal plate-shaped tool body provided with a sliding body, wherein sliding portions extending along the longitudinal direction are formed on two opposite lateral faces of the sliding body, locating pieces are respectively and fixedly arranged corresponding to the sliding portions and provided with guide grooves, and the sliding portions are arranged in the corresponding guide grooves in a sliding mode. The sliding body is vertically provided with a pneumatic right-angular grinder in a penetrating mode, the tool body is provided with a through hole for the pneumatic right-angular grinder to pass through, a through hole is arranged on the tool body at the position a first distance away from the pneumatic right-angular grinder, and a locating pin for fixing the tool body on the engine body is arranged in the through hole in a penetrating mode. The processing device of the inner hole of the oil pump hole for the engine body overcomes the shortcomings that a drill hole position is difficult to find accurately by visual inspection and a handheld drill hole tool does not have support location, and can accurately and efficiently process the inner hole of the oil pump hole with high quality.

Description

technical field [0001] The invention relates to engine manufacturing technology, in particular to a machining tool and a machining method for the inner hole of an oil pump hole of an engine block. Background technique [0002] The body of a diesel engine is a key part of the engine. The body blank is generally in the shape of a cube. It is usually made by casting, and then various holes are processed on the body blank. Wherein, a plurality of oil pump hole groups are provided on the top surface of the body 10, and each group of oil pump hole groups includes three oil pump holes 11 arranged along the longitudinal centerline extending direction of a single group of oil pump holes, and two adjacent oil pump holes 11 are connected through the hole 12 in the oil pump hole (such as figure 1 and figure 2 shown), and the central axis of the inner hole 12 of the oil pump hole is perpendicular to the central axis of the oil pump hole 11. Since the size of the oil pump hole 11 is s...

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Problems solved by technology

[0004] In the processing method of the inner hole of the oil pump hole of the body in the prior art, the drilling position needs to be found by visual inspection after manual marking, which is difficult to ensure the accuracy of the position of the inner hole of the oil pump hole drilled; The drilling tool is positioned without support during the drilling process, which makes the drill bit vibrate greatly during the drilling process, and it is difficult to ensure the straightness of the inner hole of the oil pump hole and the alignment between the central axis of the inner hole of the oil pump hole and the oil pump hole. The verticality of the central axis results in poor machining quality and low machining efficiency of the inner hole of the oil pump hole

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