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2583 results about "Surface shape" patented technology

Optical measurement system and method for three-dimensional shape of large-scale complex curved surface member

ActiveCN106959080AIntegrity guaranteedGuaranteed measurement efficiencyUsing optical meansGratingData integrity
The invention provides an optical measurement system and method for a three-dimensional shape of a large-scale complex curved surface member. The method is based on binocular optical grating projection measurement technologies, point cloud poses of all station positions during multiple station position measurement are obtained via a laser tracker and a corresponding target ball, point cloud obtained via the multiple station position measurement is converted to be under a unified laser tracker coordinate system according to corresponding pose data, and overall merging of point cloud data of a large-scale complex surface-shaped member can be realized; in the system, a six degree-of-freedom robot is used as a carrier for a point cloud space pose tracking unit and a binocular structured light measurement device, single station position measurement precision is ensured via calibration of the binocular structured light measurement device before measurement work starts, and data integrity and measurement efficiency are ensured via measurement route planning. Via the optical measurement system and method, all kinds of large-scale complex surface-shaped members can be accurately measured in non-contact conditions; practical, reliable and complete original three dimensional shape data can be provided for evaluation of all kinds of processing quality.

Process and equipment for manufacturing clear, solid ice of spherical and other shapes

The process and equipment, according to this invention, for manufacturing clear, solid ice of spherical and other shapes are capable of making clear ice balls and block ice of other shapes in the mold quickly, efficiently, and with effective energy utilization. This process is characterized in the steps of:
    • a) preparing a mold for making ice balls and block ice of other shapes, which comprises an upper mold (24a) made of an insulating material and provided with a vertical injection hole (23) drilled therein and a water-injection nozzle (22) fitted in the hole; and a lower mold (24b) made of a water-freezing block (26) having coolant pipe (25) embedded therein;
    • b) preparing for a domed lid (21a) or the lid of a different shape made of an insulating sheet, said lid (21a) having a shape that fits in with the surface shaped for the upper mold (24a) and being provided with a cylinder for being fitted into the vertical injection hole (23); and a shaped hemispherical cup (21b) of the same insulating sheet, which similarly fits in with the shaped surface of the lower mold (24b);
    • c) assembling both halves of the mold (24) after the lid (21a) and the cup (21b) have been attached tightly to each other and placed in the mold;
    • d) then, keeping the liquid to be frozen cooled at a predetermined temperature and spraying the liquid intermittently in the direction of the water-freezing block (26) that has been cooled to a predetermined freezing temperature;
    • e) repeating the spraying operation to freeze the sprayed liquid in the container (21), layer by layer, until clear ice balls (20) or block ice of other shapes are formed; and
    • f) disassembling the halves of the mold under the ice-releasing effect, which the ice container (21) has on the ice-making mold (24), and immediately taking out We shaped ice balls (20) or the block ice of a different shape.

Grating projection rapid non-contact measurement method and device for high-reflectance free-form curved-surface parts

The invention relates to high-precision detection of complex optical curved-surface parts with large-curvature surface shapes, and aims to provide a high-precision detection method for the complex curved-surface parts with large curvature surface shapes, such as optical curved-surface parts, which has the advantages of rapidity, non-contact and no damage to part surfaces and surface layers. The technical scheme adopted by the invention is that the invention provides a grating projection rapid non-contact measurement method and device for high-reflectance free-form curved-surface parts, and the method comprises the following steps that: three degree-of-freedom motion of a measured object is realized with the help of a precision motion control system; coded grating fringes are projected onto the surface of the measured object by using a grating projection device; phase distribution information of the surface of the measured object is obtained from a deformed fringe pattern by using a digital phase shifting technology and a phase unwrapping algorithm; reference phase distribution information is obtained by using a virtual reference surface technology; and three-dimensional morphological information of a measuring area of the surface of the measured object is recovered according to a corresponding relation between phase deviation information and the gradient of the surface of the measured object. The grating projection rapid non-contact measurement method and device are mainly applied to the measurement of the optical curved-surface parts.

Glazing robot off-line teaching device and teaching method

The present invention relates to an off-line glazing robot-demonstrating device, which belongs to the field of industrial robots. The demonstrating mechanism of the off-line glazing robot-demonstrating device has the same degree of freedom, the same type and number of hinges, the same mechanism size and the same operating space as the actual glazing robot does, joints are connected together by link rods, and the rotary shafts of the joints are respectively connected with an encoder. A demonstrating ejection gun is assembled on the end of the demonstrating mechanism and held by a hand in order to demonstrate, and a data-acquiring unit acquires and records the position and the speed of each joint and the on-off state of the ejection gun. A touch switch is assembled on the end of the demonstrating mechanism, the shape and the size of the surface of a workpiece are measured, and then the three-dimensional model of the workpiece is built in a computer. A glazing process simulation software simulates the piling process and the thickness distribution of glaze on the surface of the workpiece in the process of glazing. A data transmission unit converts the acquired data into a control program for the glazing robot, and then the glazing robot conducts a glazing action according to a data sequence. The off-line glazing robot-demonstrating device has the advantages of light weight, flexibility, high demonstration efficiency and convenient operation, and the glazing process simulation can forecast the thickness distribution of the glazed layer of the surface of the workpiece.
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