The Study Of Contact Deformation And Wear About The Clamping Device Based On The Fractal Theory

With the development of manufacturing industry, the application of linear rolling guide vice is becoming more and more widely, the braking capacity and stiffness problem has received more and more attention, and study its additional components- clamping device performance is increasingly urgent. In order to promote the progress of manufacturing technology in our country, the research of related clamping technologies and the performance is very necessary. In the working process of the clamping device, the contact deformation and wear is not only too difficult to control and detect, but also have a great influence on its working performance.Firstly, in this paper on the base on the fractal theory,we introduce a contact coefficient to set up a suitable contact model for clamping device internal brake block and the guide、contact roller and vice fractal. The mat lab analysis is used to establish the contact model of the influence of various parameters on the load— contact area, which is very useful for us to processing material or machining process of clamping. According to the contact model,we choose the CP45 R clamping device model to calculate the load-deformation diagram, analyze the state of deformation in the process of contact to lay the foundation for the follow-up study of clamping device performance.Secondly, we analyze the wear mechanism of the clamping device in the process of braking, which is from the adhesive wear and abrasive wear two aspects to establish the mathematical models of brake block and the guide of wear. Then we analyze the influence of various parameters on the wear model. Next we analyze how the fractal surface contact elastoplastic changes affect the lubrication characteristics of the surface of the membrane, and according to the fractal theory to correct the wear model. The model considers the actual situation of the surface contact and reflects the affect of brake block the nature of the material surface.Finally,we use the ABAQUS to analyze the working process of the clamping to verify the model we build.