Patent ID: 11919115
Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. A flexible dot matrix bonding apparatus and an adaptive clamping method for a disk-type planar component, comprising the following steps of:
step one, according to the balance conditions of the force and the moment in the cutting process of the disk-type planar component, primarily selecting the number and the positions of bonding points of the disk-type planar component; installing the connecting rods on the substrate, and adjusting the axial height of the connecting rods to the appropriate position; and according to a primary bonding scheme, pasting the circular silicone rubber plate on the upper surfaces of parts of the selected connecting rods;
step two, placing the whole bonding apparatus on the heating platform for preheating; when preheating is finished, uniformly coating a layer of hot melt adhesive on the upper surface of the selected connecting rods which play the role of bonding, and placing the disk-type planar component on the combined dot matrix bonding apparatus; subsequently closing the heating platform, and cooling and solidifying the adhesive between the disk-type planar component and the connecting rod, thus fixing the workpiece to the bonding apparatus; and fixing the flexible dot matrix apparatus which bonds the disk-type planar component on an ultra-precision machine tool by adopting bolts that are matched with mounting holes, installing the trimming bolts on the trimming threaded holes on the substrate, and adjusting the trimming bolts until the detection results of dynamic balance of the machine tool meet the requirements;
step three, after machining is finished, jacking up the disk-type planar component by using the auxiliary support; and measuring a machining surface shape of the disk-type planar component by adopting a non-contact measuring apparatus, to obtain the deformation distribution thereof;
step four, adjusting a clamping scheme according to the deformation detection results; specifically, weakening the boundary constraint effect by reducing the number of bonding points in a large deformation area, so that the unbalanced stress induced by the material removal is fully released in the machining process, thus reducing the machining deformation of the disk-type planar component when the constraint is unloaded;
step five, fixing the disk-type planar component on the bonding apparatus according to the revised clamping scheme, and then installing the bonding apparatus on the ultra-precision machine tool, readjusting the dynamic balance of the machine tool, and completing the subsequent machining for the disk-type planar component according to the given turning parameters; and
step six, detecting the machining surface shape of the disk-type planar component, evaluating the effect of a new clamping scheme, and determining current deformation distribution of the disk-type planar component, to provide data support for the adjustment of the subsequent clamping scheme; and repeating the step four, step five and step six until the geometric dimension and the surface shape precision of the disk-type planar component are converged to the expected target.