Investigation of the kinematics of cylindrical milling cutter motion in the processing of book blocks in perfect binding machines

Perfect binding of book and magazine products is the most common method of binding. This is explained by many ad-vantages. However, it has certain disadvantages. Among them are not always sufficient strength and durability of the binding, as well as poor book opening ability. There are two main directions for improving the quality of perfect binding. The first is improvement of adhesives and the technology of their application to the spine of the book block; the second is improvement of devices and tools used to prepare the spine for adhesive application. Available literature indicates that in the second area, there is an ongoing search for alternative spine processing devices. Each of them is focused on improving processing means - milling cutters, knives, etc. Among others, one method stands out, namely: the use of a tool with a passive drive. This approach involves driving the tool – a cylindrical milling cutter – through its rolling motion along the moving book block. Previous research in this area has focused only on the milling cutter rotational motion.The article further develops the authors’ research on the use of a cam drive to provide additional axial movement of the milling cutter. The proposed device scheme incorporates a fixed end cam. The axial motion of the milling cutter is provided by a lever with a roller that receives movement due to the rotation of the milling cutter. This drive configuration eliminates the need for a separate electromechanical drive for the milling cutter.For the adopted initial conditions, analytical studies of the kinematic parameters of the milling cutter axial movement were carried out. To objectively evaluate analytical results, a virtual simulation of the milling cutter's motion was performed using the Dynamic Simulation module of CAD Autodesk Inventor. This made it possible to obtain the results of the kinematic parameters through a virtual experiment. A comparative analysis of the results of analytical studies and virtual simulation showed their absolute identity. Based on the results of the studies, a 3D sketch of the end cam was constructed.Analytical studies of the cylindrical milling cutter axial displacement kinematic parameters lay the groundwork for fur-ther research. The next stages involve construction of the physical experimental stand, its installation on the Trendbinder per-fect binding machine, and investigation of the energy-force parameters of the process as well as the quality indicators of the perfect binding.