Precision machining device for spherical surface of orthopedic implant

Abstract

The invention discloses a precision machining device for the spherical surface of an orthopedic implant. A polishing body is arranged on a base through a horizontal movement mechanism, a coil is fixedto the polishing body, a polishing groove is formed in the polishing body, magneto-rheological polishing fluid is located in the polishing groove, and a rotating mechanism for clamping and rotating apolished part is arranged above the polishing groove. The horizontal movement direction of the polishing body is consistent with the length direction of the polishing groove. The precision machiningdevice has the beneficial effects that the magneto-rheological polishing fluid is converted into a solid-like form through a magnetic field, the horizontal movement mechanism and the rotating mechanism are simultaneously started, the polished part can relatively move in the horizontal direction while rotating, omni-bearing polishing is carried out, automatic polishing is achieved, as the magneto-rheological polishing fluid is in a liquid state when not collected in the magnetic field, the portion between the side wall of the polishing groove and the polished part can be well filled with the magneto-rheological polishing fluid, after the magneto-rheological polishing fluid is converted into the solid-like state due to the magnetic field change, the magneto-rheological polishing fluid can polish each fine position of the polished part, the polishing precision is greatly improved, and automatic polishing is achieved.

Description

technical field [0001] The invention relates to a spherical precision machining device for orthopedic implants. Background technique [0002] With the continuous improvement of the world's living standards, people pay more and more attention to medical rehabilitation. Bone replacement and filling caused by tissue and organ repair and replacement, as well as joint replacement implants have become international research hotspots in the development of biomedical materials. Joint implants, also known as artificial joint prosthesis, are fixed to the bones of the human body and replace and restore the activities of human joints. The hip joint is a spherical joint consisting of a spherical femoral head and a bowl-shaped acetabulum. The smoothness of the surface of the hip joint ball has a crucial influence on its function and service life. Traditionally, the process of processing artificial hip joint balls mostly adopts the process of precision casting (or die forging), turning ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an orthopedic implant spherical precision machining device, which can effectively solve the prob

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