Lifting device for parts disengaging from positioning pins

Abstract

The invention discloses a lifting device for parts disengaging from positioning pins. The lifting device comprises a clamp bottom plate, a base arranged on the clamp bottom plate, an end face cam arranged on the base and a stand column arranged in the middle of the end face cam. A connecting plate is arranged at the top end of the end face cam, and the end face cam is rotationally connected with the base through a bearing. Multiple lifting plates for lifting or dropping the parts are arranged around a connecting plate. Multiple driven wheel mechanisms are arranged below the connecting plate. Multiple lifting grooves and falling grooves are formed in the top end face of the end face cam, the lifting grooves and the falling grooves are in transition connection through sliding faces, and theend face cam can rotate around the stand column under the action of external force so that the driven wheel mechanisms can move along the sliding faces of the end face cam to lift or drop the parts. The lifting device for the parts disengaging from the positioning pins is simple in structure, convenient to operate and capable of lifting or dropping the parts in a narrow space.

Description

technical field [0001] The invention belongs to the technical field of transmission case parts, and in particular relates to a device for lifting a part from a positioning pin. Background technique [0002] At present, for the front case / rear case of the fourteen-speed gearbox case, manual clamps are used to process side holes on horizontal machining. However, the above method has the following shortcomings: the weight of the part is 15-25Kg, limited by the machine tool conditions, the horizontal machining center has a side door, and the top of the workbench is semi-closed, and the lifting center of the part is not at the center of the workbench, so vertical lifting cannot be realized. Lifting at an angle that is too small, there is a crooked pull, and it is very easy to damage the pin holes that have been finished, resulting in scrapped parts. The matching gap between the positioning hole and the positioning hole is 0.004-0.014mm, and the depth matching length is 8-13mm. I...

AI Technical Summary

Problems solved by technology

However, the above method has the following shortcomings: the weight of the part is 15-25Kg, limited by the machine tool conditions, the horizontal machining center has a side door, and the top of the workbench is semi-closed, and the lifting center of the part is not at the center of the workbench, so vertical lifting cannot be realized. Lifting at an angle that is too small, there is a skewed lifting, and it is very easy to damage the pin holes that have been finished, resulting in the scrapping of parts. The matching gap between the positioning hole and the positioning hole is 0.004 ~ 0.014mm, and the depth matching length is 8 ~ 13mm

In order to avoid parts being scrapped, the parts can only be lifted by manual hands, because it is mass-produced, so the labor intensity of the workers is very high

Therefore, it is necessary to design a lifting device on the manual tooling. However, the height of the bottom plate of the manual fixture and the positioning block is only 52mm, and the space is very small. It is necessary to design a lifting device that meets the requirements within a narrow range.

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