Sleeve part clamping device and method

Abstract

The invention belongs to the field of product tool design, and particularly relates to a sleeve part clamping device and method. Part deformation can be avoided while axial force is not applied. As for a traditional machining center fixture structure, more axial compression force needs to be provided because no angular positioning exists, and consequently deformation of parts is aggravated. According to the sleeve part clamping device, a base is provided with a left wall body and a right wall body, a jacking rod is slidably mounted on the left wall body, an expansion shaft is mounted on the right wall body, the opposite end faces of the jacking rod and the expansion shaft are provided with petal structures correspondingly, a double-cone shaft is mounted between the jacking rod and the expansion shaft, a sleeve part is mounted on the outer side of the double-cone shaft in a sleeving mode, and the jacking rod is of an integrated structure and is provided with different material partitions; when the jacking rod is jacked, the petal structures at the two ends expand to fix the sleeve part; and the device is further provided with a synchronizing piece, and the machining zero position isdetermined by pre-mounting the synchronizing piece. The problems that the thin-wall parts adopt end face compression, and consequently are prone to deforming, poor in rigidity and prone to vibratingare solved.

Description

technical field [0001] The invention belongs to the field of product tooling design, and in particular relates to a clamping device and method for sleeve-like parts, which can avoid deformation of the parts while applying no axial force. Background technique [0002] The three-dimensional cam is an important part of the aero-engine, which is used to control the accurate position of other parts, so it has high precision and high stability to the machining process. The three-dimensional cam for a certain type of aero-engine is in the shape of a cylinder, see appendix figure 1 , the two ends are three-dimensional cam surface and spline respectively, and the three-dimensional cam part needs to be processed by machining center. Restricted by the structure, the wall thickness of the thinnest part is only 1.1mm. The fixture structure of the traditional machining center is mostly an end face compression structure, and one side is suspended in the air, which will cause deformation a...

AI Technical Summary

Problems solved by technology

Restricted by the structure, the wall thickness of the thinnest part is only 1.1mm. The fixture structure of the traditional machining center is mostly an end face compression structure, and one side is suspended in the air, which will cause deformation and vibration, and cannot process qualified products.

Because there is no angular positioning, more axial pressing force needs to be provided to ensure sufficient friction to prevent the parts from rotating, which aggravates the deformation of the parts

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