摘要:
A composite material having a bionic structure and a preparation method and a modeling method for the same are disclosed. A primary retinervus luffae fructus structure model is obtained by performing a modeling operation based on the mean values of the spatial structural characteristic values resulting from the statistics and analysis on spatial structural characteristic values of a retinervus luffae fructus, a finite element stress analysis is performed on the primary retinervus luffae fructus structure model, and a structural adjustment is performed on structural units according to the stressed nephogram of the primary retinervus luffae fructus structure model to obtain a retinervus luffae fructus structure model as the structure model of a composite material perform. A guiding device is created and a fiber winding order is determined based on the structure model, fibers are wound on the guiding device according to the determined fiber winding order to obtain a bionic retinervus luffae fructus structure as a composite material preform, and the obtained bionic retinervus luffae fructus structure is combined with a matrix to form the composite material. The composite material formed in a simulated manner is relatively high in tensile strength, high compression strength and high bending strength and effectively addresses the problem that the conventional composite material preform cannot be impregnated completely.
摘要:
The disclosure provides a multi-dimensional weaving shaping machine of composite materials, including: a guide template including a plurality of cylindrical guiders arranged according to the geometrical shape of a prefabricated member; an electrical control three-dimensional motion mechanism including: a control signal receiving terminal configured to receive motion control signals corresponding to the geometrical shape of the prefabricated member; and a three-dimensional motion output terminal configured to form a motion track according to the motion control signals; a weaving needle being connected with the three-dimensional motion output terminal and making weave fibers distribute among the cylindrical guiders according to the geometrical shape of the prefabricated member. The multi-dimensional weaving shaping machine of composite materials of the disclosure utilizes the cylindrical guiders and the electrical control three-dimensional motion mechanism to make the weaving needle to drive braided cords to distribute among the cylindrical guiders along the motion track to form the guide template. The disclosure is applicable to multi-dimensional weaving shaping of large-scale and complicated materials and capable of improving the interlaminar strength of composite materials. The shaping machine applies a rapid shaping technology to multi-dimensional weaving shaping of composite materials and the technical processes are automatic.
摘要:
The disclosure provides a forming machine without pattern casting, including: a multi-axis motion system; a cutting system, connected with the multi-axis motion system; a driving system, driving the multi-axis motion system to move; and a machining base, wherein the machining base includes a fixing seat and a turnover mechanism, wherein the turnover mechanism is revolvably connected with the fixing seat. Since the forming machine without pattern casting of the disclosure adopts a tilting type and needs no working platform, most of the waste sand grains generated from cutting fall freely into the shakeout groove arranged below the fixing seat, and will not fly into the multi-axis motion system, and will not cause stop failure; thus the precision and service life of the forming machine without pattern casting are improved. Meanwhile, the adoption of turnover mechanism realizes double-side or multi-side machining of sand billet, and thus well solves the problem of error caused by multiple times of positioning if the sand billet needs multi-side machining in conventional art.
摘要:
The invention provides a forming machine without pattern casting, comprising: a multi-axis motion system which at least comprises an X-axis motion system, a Y-axis motion system and a Z-axis motion system, and a workbench which is below the multi-axis motion system; and further comprises: a moving platform system below the workbench, comprising a moving bracket which can reciprocate along the direction parallel to the X axis, a lifting device provided on the moving bracket, which is used for lifting and supporting the workbench to enable the linkage between the workbench and the moving bracket. The forming machine without pattern casting of the invention can move the workbench without a lifting tool, and machine a casting mold with a large size and a complex cavity, and causes little pollution to the environment.
摘要:
The present invention provides a locating beam and a robot linear motion unit having the same. The locating beam comprises a first support beam (11) and a second support beam (12) which are parallel to each other, wherein a crossbeam (13) is connected between the first support beam (11) and the second support beam (12) and is vertical to the beams (11, 12), and each of the joints between the crossbeam (13) and the beams (11, 12) is provided with a right-angle connecting piece (15). The robot linear motion unit comprises a motion track and a transmission mechanism arranged along the extension direction of the motion track, wherein the motion track is arranged on a surface of the locating beam. By arranging a crossbeam and right-angle connecting pieces between the first support beam and the second support beam in the locating beam, the present invention effectively improves the mechanical structure strength of the locating beam, reduces the deflection deformation and twist deformation of the locating beam, and improves the impact resistance of the robot linear motion unit.