A kind of milling method of carbon fiber joint arc profile

Abstract

The application relates to the technical field of mechanical processing, and discloses a milling method for the circular arc profile of a carbon fiber joint. The process strategy of semi-finishing with small cutting amount of bottom tooth and finishing process. During processing, the rough and finishing process allowances and processing parameters are reasonably distributed, which improves the milling efficiency as a whole, and also realizes the arc profile and tangent. Simultaneous processing of the ruled surface and stable milling of the carbon fiber large-curvature arc surface structure eliminates the tool connection step in the transition area between the arc surface and the tangent ruled surface, and improves the surface quality of the carbon fiber joint arc surface. sex.

Description

technical field [0001] The application relates to the technical field of mechanical processing, and in particular to a method for milling a circular arc profile of a carbon fiber joint. Background technique [0002] Carbon fiber (material, Carbon fiber reinforced polymer, CFRP) is an advanced composite material composed of high-strength, high-modulus carbon fiber as the reinforcing phase and fatigue-resistant and corrosion-resistant resin as the matrix phase. It has excellent properties such as high strength and specific stiffness, low density, corrosion resistance, and convenient processing and forming. It has been widely used and promoted in the fields of aviation and aerospace, and has become the mainstream material for large load-bearing components. [0003] However, due to the great differences in physical and mechanical properties such as thermal conductivity, thermal expansion coefficient, etc., between reinforcing fibers and resin matrix, the cutting failure form is ...

AI Technical Summary

Problems solved by technology

The existing overall processing technology is truss cutting with fixed pendulum angle, that is, the relationship between the axis of the tool and the normal line of the profile is 5-10°, and the milling is carried out in the way of small depth of cut, small width of cut, and back and forth by using the bottom angle R of the tool (such as figure 1 shown), there is a problem of low surface processing efficiency; further, for large curvature arc surface structures with central angles greater than 90° (such as figure 2 As shown), the fixed pendulum truss cutting is carried out by adopting the method of segmenting the arc and segmenting the arc and the ruled surface. Due to the difference in the tool swing angle of different arc segments, there are local residues and knife-joining steps between the profiles of each segment. , affecting the overall surface quality of the profile

[0005] In summary, due to the problems of low processing efficiency and poor surface quality in the existing process schemes, it can no longer meet the needs of carbon fiber profile processing, and it is urgent to explore an efficient and high-quality general method for profile milling

Images