Positioning clamping device for machining of complex inner shape of thin-wall cylindrical workpiece

Abstract

The invention discloses a positioning clamping device for machining of a complex inner shape of a thin-wall cylindrical workpiece. The positioning clamping device comprises a base, a clip spring, a taper sleeve and a pressing threaded sleeve. The base is of a cylindrical structure, the taper sleeve is arranged at the upper end of the base, and the upper portion of an inner hole of the taper sleeve is provided with a second conical surface; the taper sleeve is connected with the pressing threaded sleeve which is in threaded connection with the side wall of the base, the clip spring is installed in an inner hole of the base, and the upper portion of the clip spring is provided with a first conical surface matched with the conical shape of the inner hole of the taper sleeve and provided with a groove joint which is axially formed; and the first conical surface is arranged in the second conical surface, and the lower portion of the clip spring is provided with a cylindrical surface which is matched with a positioning hole of the bottom of the base. According to the positioning clamping device, the structure is simple, operation is convenient, the taper sleeve is matched with the conical surface on the upper portion of the clip spring in the base, the taper sleeve is controlled by the pressing threaded sleeve to downwards move to achieve clamping of a clip spring on the thin-wall cylindrical type part, the stiffness of the part is improved, the shape and position tolerance of the part is ensured, the problem of vibration during thin-wall part machining is solved, and the machining efficiency and machining quality of the part are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of fixtures for thin-walled cylindrical workpieces, in particular to a positioning and clamping device for complex inner shape processing of thin-walled cylindrical workpieces. Background technique [0002] In the prior art, when processing the inner shape of thin-walled cylindrical parts based on the outer circle, the positioning method generally adopts the positioning inner hole surface matched with one end of the outer circle for positioning, and the positioning size of the positioning device is generally a rigid size, because There is a coaxiality error between the outer circle of the part and the positioning inner hole, and the rigidity of the part itself is poor, so that vibration occurs when the complex inner shape of the middle part of the part is processed, the deformation of the part is enlarged again, the shape and position tolerance is out of tolerance, and the part assembly After going up, the f...

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Problems solved by technology

[0002] In the prior art, when processing the inner shape of thin-walled cylindrical parts based on the outer circle, the positioning method generally adopts the positioning inner hole surface matched with one end of the outer circle for positioning, and the positioning size of the positioning device is generally a rigid size, because There is a coaxiality error between the outer circle of the part and the positioning inner hole, and the rigidity of the part itself is poor, so that vibration occurs when the complex inner shape of the middle part of the part is processed, the deformation of the part expands again, the shape and position tolerance is out of tolerance, and the part assembly After going up, the following defects will appear: one is that the part cannot be installed in place when the deformation is greater than the tolerance of the positioning inner hole, and the second is the gap between the outer circle and the positioning inner hole, resulting in a coaxial error, so that The shape and position tolerance is out of tolerance and the case of one side cannot meet the design requirements of the part

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