Piston rod flat square end finish-milling forming cutter and positioning tool and method

Abstract

The invention discloses a piston rod flat square end finish-milling forming cutter and a positioning tool. The finish-milling forming cutter comprises a cutter bar, a left offset cutter and a right offset cutter, the lower end of the left offset cutter and the lower end of the right offset cutter are perpendicularly fixed to the middle of the cutter bar separately, and the distance L between two blade tips arranged at the upper ends of the left offset cutter and the right offset cutter of which the blade tips are oppositely arranged is equal to the opposite edge distance B1 of the left side and the right side of the piston rod flat square end. The positioning tool comprises a base and two groups of V-shaped block fixtures fixed to the base at intervals, and the lower side of the base is fixed to a machine tool workbench. A machining method comprises the following steps that (1), the positioning tool and the finish-milling forming cutter are installed; (2), a piston rod is positioned and fixed into the V-shaped block fixtures; (3), the finish-milling forming cutter is installed, and the machine tool spindle stretching position is adjusted; and (4), the piston rod flat square end isfinish-milled. According to the piston rod flat square end finish-milling forming cutter and the positioning tool, the manufacturing and cutter consumption cost is low, operation is easy and convenient, the skill requirement for operators is greatly reduced, and the machining efficiency is significantly improved.

Description

Technical field [0001] The invention relates to a forming cutting tool, tooling and method for the flat square end of a rod, in particular to a forming tool and positioning tool and method for the flat square end milling of a piston rod used for high-precision dimensional tolerance and shape tolerance, and belongs to metal Cutting technology field. Background technique [0002] figure 1 with figure 2 The piston rod 1 of a certain type of marine low-speed diesel engine shown has a rectangular piston rod flat end 11 at its right end and a piston 12 at its left end; the piston rod flat end 11 consists of two vertical sides and two vertical sides. Surrounded by two upper and lower sides, the dimensional tolerance of the distance between the two vertical sides and the longitudinal symmetry plane AA of the piston rod is 0.05, and the tolerance of parallelism and symmetry between the two vertical sides is less than 0.05. The vertical side has the characteristics of large area, high di...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above disadvantages, the present invention provides a piston rod flat square end fine milling forming tool, positioning tool and method, which solves the difficulty of direct processing of the piston rod flat square end in ordinary machine tools and numerical control machining centers, high labor intensity, inconvenient operation, Problems such as low processing efficiency

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