Short large diameter mosaic centering fixture

Abstract

The invention provides a short large-aperture inlaid centering fixture which can ensure radial and axial locating precision, has interchangeability and is convenient to operate and high in generalization degree. The short large-aperture inlaid centering fixture comprises a flange and is characterized in that a transition disk is supported on the flange; a fixture body is supported on the transition disk; the guide opening of the flange is provided with a tensioning disk; the center of the tensioning disk is connected with a draw rod; a chuck body is provided with a connecting disk; the fixture body is internally provided with multiple clip spring bases and elastic clip springs; spigot matching structures are arranged between the clip springs and the clip spring bases, between the fixture body and the connecting disk and between the transition disk and the flange; the upper parts of the inner walls of the clip springs are provided with T-shaped grooves; the upper parts of insert blocks are provided with clamping platforms which extend inwards; the clamping platforms are clamped in the corresponding T-shaped grooves, and the clamping platforms and the T-shaped grooves are connected and pressed by screws; the internal guide surface of the upper opening of the fixture body is in conical surface contact with the external side surfaces of the upper parts of the clip springs; the clip spring bases, the connecting disk and the tensioning disk are connected by virtue of guide posts.

Description

technical field [0001] The invention relates to a precision centering clamping tool for mechanical parts such as short shafts and disc sleeves, in particular to a short large-diameter inlaid centering clamp. Background technique [0002] At present, most enterprises use three-jaw chucks or four-jaw chucks for clamping and processing of short and large-diameter rotary parts. The problem is that the clamping force of the parts is not easy to control. If the clamping force is too large, it will cause clamping deformation, and if the clamping force is too small, the clamping will not be reliable, which seriously affects the quality of the parts. [0003] If the elastic clip spring of ordinary centering clamping fixture is damaged or worn and cannot meet the precision requirements of the processed parts, the whole clip spring can only be replaced, which causes great waste. Due to the long manufacturing cycle of the clip spring, the production preparation time is increased. Curr...

AI Technical Summary

Problems solved by technology

The problem is that the clamping force of the parts is not easy to control. If the clamping force is too large, it will cause clamping deformation, and if it is too small, the clamping will not be reliable, which seriously affects the quality of the parts.

There is currently no unified standard for short and large-diameter clamp springs, so this type of centering fixture cannot be standardized.

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