Pre-dividing location mould for grinding of crankshaft connecting rod journal

Abstract

The invention relates to a pre-dividing location mould for grinding of a crankshaft connecting rod journal. The mould comprises a location disc, a location column and a support body. The lower part of the location disc is provided with a pre-dividing location groove. The upper part of the location column is provided with a round pin matched with the pre-dividing location groove of the location disc. A narrow groove comminuting with a central hole is arranged in a vertical direction of the upper part of the central hole of the location disc and is pressed tightly on a column at the end part of a crankshaft though a compression bolt. Open narrow grooves with enclosed inner ends are arranged on two sides in the horizontal direction of the central hole of the location disc. The crankshaft and the location disc, assembled together, are hoisted into a grinding machine clamp. A circumferential locating pin of an operation clamp is matched with the pre-dividing location groove. Therefore, pre-dividing location for grinding of the connecting rod journal is achieved. As a result, the crankshaft is clamped and the connecting rod journal is thus grinded. The pre-dividing location mould for grinding of the crankshaft connecting rod journal has following beneficial effects: the pre-dividing location mould is reasonable in structure, convenient in operation and high in pre-dividing location efficiency; through deformation buffer of the open narrow grooves, size deformation of the pre-dividing location groove at the lower part of the location disc is avoided, thereby ensuring location accuracy of the location disc and the crankshaft.

Description

technical field [0001] The invention relates to an auxiliary device for pre-positioning a crankshaft grinding pin neck, in particular to a crankshaft grinding pin pin pre-indexing positioning tool. Background technique [0002] We know that the crankshaft connecting rod neck is ground on the existing grinding machine, and a circumferential positioning pin is arranged on the fixture, and this pin cooperates with the positioning hole on the end face of the crankshaft flange to realize the indexing and positioning of the grinding connecting rod neck. However, due to structural limitations, some crankshafts have no positioning holes on the end faces of the flanges, so it is not convenient to perform indexed grinding of the crank pin neck. The applicant's patent application 201120212730X discloses a device for pre-indexing and positioning of the crankshaft grinding pin neck, which is provided with a crankshaft support and positioning mechanism and a pre-indexing and positioning m...

AI Technical Summary

Problems solved by technology

Put the crankshaft in its proper position, and then use 4 bolts to press the positioning plate. This kind of device not only takes time to press, but sometimes the pressing is not in place, and the crankshaft and the positioning plate are prone to slippage, resulting in the scrapping of the crankshaft after grinding.

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