The structure of the connecting rod neck rolling caliper of the automatic crankshaft fillet rolling machine

Abstract

The invention discloses a connecting rod neck rolling clamp structure for an automatic crank fillet rolling machine. The connecting rod neck rolling clamp structure comprises an upper clamp, a lower clamp, a rolling head and a clamp fixing frame; and the tail ends of the upper clamp and the lower clamp are respectively connected with the two ends of a pressurizing oil cylinder. The connecting rod neck rolling clamp structure provided by the invention is characterized in that a weighing block is arranged at the front end of the upper clamp; the clamp fixing frame is connected with the upper clamp through a swinging rod; one end of the swinging rod is hinged with the clamp fixing frame, and the other end of the swinging rod is hinged with the upper clamp; and limiting devices for limiting the swinging rod and the upper and lower clamps to swing are further arranged on the clamp fixing frame and the upper clamp. According to the connecting rod neck rolling clamp structure provided by the invention, the weighing block and the limiting devices are used for limiting the rolling clamps to move relative to the swinging rod, so that the clamp positions are enabled to be fixed in a rolling preparation step; furthermore, the clamps can conveniently enter and exit from a machining station. The thickness of the rolling clamp can be effectively limited within a space with a width of 30 mm; and the clamps can be automatically controlled, and a crank of a saloon car can be automatically rolled.

Description

technical field [0001] The invention relates to the technical field of crankshaft processing, in particular to a connecting pin neck rolling pliers structure of an automatic crankshaft fillet rolling machine. Background technique [0002] As the vehicle engine continues to develop in the direction of increasing power and reducing volume, the fatigue strength requirements for the crankshaft, a key part of the engine, are also increasing. Among the various strengthening treatment processes currently used to improve fatigue strength, such as journal quenching, nitriding, shot peening, and fillet rolling, crankshaft fillet rolling is the most effective means to improve crankshaft fatigue strength, so it is used in production. A large proportion of crankshafts use this production process. In order to improve the quality and production efficiency of products produced by the crankshaft fillet rolling process, the crankshaft manufacturing industry urgently needs to be able to autom...

AI Technical Summary

Problems solved by technology

The second is that the axial dimensions of many car crankshafts are very compact. The rolling pliers must be able to roll most of the crankshafts, and the overall thickness of the caliper body should not be greater than 30mm.

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