Quick positioning and fixing device and method for hole-series parts

Abstract

The invention provides a quick positioning and fixing device and method for hole-series parts, and belongs to the technical field of tool clamps. The problems that no direct press-fitting fixing position exists on a hole-series part, and a traditional fixing method is too tedious in process and poor in universality and wastes materials are solved. The device comprises a taper expansion rod, a telescopic shaft, a base, a pull rod, a variable-diameter expansion sleeve and a workbench bottom plate, the base is connected with the workbench bottom plate, the telescopic shaft is connected with the base in a sliding mode, a height adjusting mechanism is arranged between the telescopic shaft and the base, the taper expansion rod is connected with the telescopic shaft, and the taper expansion rod comprises a conical surface part and a part supporting surface. Force measuring mechanisms are arranged on the conical surface part and the part supporting surface, the upper end of the pull rod is movably connected with the variable-diameter expansion sleeve in an embedded mode, the variable-diameter expansion sleeve is arranged opposite to the conical surface of the taper expansion rod, and a pull rod adjusting mechanism is arranged between the pull rod and the base. The quick positioning device is mainly used for quickly positioning and fixing hole-series parts.

Description

technical field [0001] The invention belongs to the technical field of fixtures, in particular to a fast positioning and fixing device and fixing method for hole system parts. Background technique [0002] In the work of fixing the parts on the bottom plate of the workbench, it is often encountered that the outer contour and surface of the parts cannot be directly pressed or clamped and fixed. If the conventional press-fit technology is used, fixture interference, surface damage and deformation of the parts will occur. Phenomenon. At this time, the part can be fixed on the base plate by means of the existing hole on the part or the process hole that does not affect the original performance of the part. [0003] For the fixing work of hole system parts that cannot be directly press-fitted, the commonly used method in the prior art scheme is the screw rod reverse pulling fixing method. If the original threaded hole on the part, the part can be tightened on the base plate wit...

AI Technical Summary

Problems solved by technology

In this way, the horizontal accuracy of the reference plane is limited by the processed pads, and subsequent fine-tuning cannot be performed. The machining accuracy is affected by the accuracy of the pads. The manufacturing pads are only suitable for current product parts, which has poor versatility and wastes materials.

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