A high-precision centering and positioning structure of the cover hinge

Abstract

The invention discloses a high-precision centering and positioning structure of a cover hinge, and relates to the technical field of positioning structures. A Y-direction nylon positioning block facing the middle is provided at both ends of the Y-direction centering mechanism, and the two nylon positioning blocks are respectively attached to the vehicle On the outer sides of the two front doors, one X-direction nylon positioning block facing the front side of the vehicle is provided at each end of the XZ-direction positioning mechanism, and two cam guides are symmetrically arranged in the middle, and the two X-direction nylon positioning blocks are respectively attached to two of the vehicle. On the rear side of the front door, two cam guides are closely attached to the rear side of the upper assembly of the engine room cowl, and two ball studs are positioned at the overlapping edge directly above the upper assembly of the engine room cowl. The present invention directly uses the front and side of the left and right car doors as the positioning reference, and reduces the space size error between the engine room longitudinal beam itself and the left and right car doors when the installation hole on the longitudinal beam of the engine compartment is used as the positioning reference of the tooling, thereby reducing the hood hinge and the door. The matching error, thereby reducing the gap error between the cover and the door.

Description

technical field [0001] The invention relates to the technical field of positioning structures, in particular to a positioning structure for positioning a cover hinge. Background technique [0002] The hood hinge is a common auto part, which is mostly used to connect the engine compartment cover and the body of the car. At present, when the cover hinge is assembled, there are more split-type positioning structures on both sides. The tooling realizes positioning by finding the existing holes and surfaces on the longitudinal beam of the cabin. In addition, most of the existing split-type tooling adopts a positioning pin structure, and the positioning in two directions is realized through the cooperation of pins and holes, and the positioning in the third direction is performed through the structure of the supporting block. Obviously, when the existing split positioning mechanism is used to position the hood hinge, the positioning accuracy is limited by the overall forming accu...

AI Technical Summary

Problems solved by technology

Obviously, when the existing split positioning mechanism is used to position the hood hinge, the positioning accuracy is limited by the overall forming accuracy of the cabin; at the same time, the purpose of locating the hood hinge is to realize the matching clearance between the hood, the fender, and the left and right doors. Consistency and elimination of surface differences. The split positioning structure adopted in the prior art uses the existing hole surface of the cabin longitudinal beam as a reference, and is not closely related to the canopy and fenders, so optimal positioning cannot be achieved.

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