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10017results about "Milling equipment details" patented technology

Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller

InactiveCN102085576ASolve the technical problems of low removal efficiencyImprove processing efficiencyAutomatic control devicesFeeding apparatusImpellerStress conditions
The invention discloses a five-axis linkage variable-axis plunge milling numerically controlled processing method for a blade part of an integral impeller. The method comprises the following steps: 1) dividing a spatial free-form surface to be processed of a part into multiple areas to be processed; 2) analyzing the stress conditions in a tooling process; 3) selecting a proper plunge milling cutter; 4) planning a processing route; 5) generating a track of a numerically controlled cutter; 6) simulating by utilizing a numerically controlled program; 7) editing the numerically controlled program; and 8) processing the part. The method is characterized in that by adopting a five-axis linkage variable-axis plunge milling manner, the processing efficiency of removing large margin by virtue of rough grooving of the integral impeller is improved, and the processing problem that finishing process with a ball cutter is required as the residual margin on a blade surface is not uniform after the plunge milling of a fixed axle of the free-form surface is solved; and the method disclosed by the invention can be applied to the five-axis numerically controlled milling processing needing to remove large-margin parts of the complicated free-form surface structures such as axial-flow type integral impellers, integral blade rings and the like as well as to the multi-axis numerically controlled milling processing of the parts of simple free-form surface structures such as centrifugal type integral impellers, mould processing and the like.
Owner:SHENYANG LIMING AERO-ENGINE GROUP CORPORATION

Device and method of automatic helical milling of hole

The invention discloses a device and a method for automatic helical milling of a hole. The device comprises a base, a spindle slide base, an outer eccentric sleeve, an inner eccentric sleeve, a torque motor, a circular grating, an electric spindle, a presser foot, an industrial camera, a linear grating, four laser distance sensors, a servo motor, a ball screw assembly, a synchronous belt and the like, wherein axes of inner and outer contours of the inner and outer eccentric sleeves have offsets; the inner eccentric sleeve is installed in the outer eccentric sleeve; and the axis of the inner contour of the outer eccentric sleeve and the axis of the outer contour of the inner eccentric sleeve are coincident. The device and the method have the advantages that the tool radial offset is realized through control of a relative rotation angle between the inner eccentric sleeve and the outer eccentric sleeve; in spindle feeding, a double-grating feedback technology is adopted so that dimple depth accuracy is guaranteed; and a preset hole position on a workpiece is detected by the industrial camera and a normal vector of the preset hole position is detected by the four laser distance sensors and the industrial camera and the four laser distance sensors cooperate with automatic numerically-controlled devices such as an industrial robot, a numerically-controlled machine tool and the like and thus high-precision and high-efficiency automatic hole milling is realized.
Owner:ZHEJIANG UNIV

Online milling deformation measurement and complementation machining method for thin-walled part

The invention discloses an online milling deformation measurement and complementation machining method for a thin-walled part. The online milling deformation measurement and complementation machining method for the thin-walled part comprises the steps that 1, a three-dimensional model of the thin-walled part is established, and a numerical control code is obtained; 2, measurement point locations are extracted from the three-dimensional model; 3, based on the model, a measurement path is planned; 4, rough machining and semi-precise machining are conducted on a workpiece blank; 5, online measurement is conducted, and the coordinate values of all the planed measurement point locations are obtained; 6, the obtained coordinate values of the planed measurement point locations are compared with those of the corresponding point locations on the three-dimensional model of the thin-walled part, and the difference between the coordinates of each point location of the actually machined workpiece and those of the corresponding point location on the three-dimensional model is calculated; 7, according to the machining differences, a complementation factor optimal machining path is generated according to the machining differences, precise machining is conducted according to the path, and then the final deformation deviation and the compensation values are obtained. By the adoption of the online milling deformation measurement and complementation machining method, semi-precise machining and precise machining are adopted, the identical machining parameters are adopted by the semi-precise machining and the precise machining, and the best precise machining compensation effect of the thin-walled parts which are made of the same materials and have the same characteristics can be achieved to the greatest extent through only one group of tests.
Owner:HUAZHONG UNIV OF SCI & TECH

Clamp structure for milling positioning reference plane on glass die blank

The invention provides a clamp structure for milling a positioning reference plane on a glass die blank and belongs to an auxiliary facility for processing a glass die. The structure comprises a base, an acting cylinder control device, at least one adjusting seat, a fixed seat, a first die blank back side pressing device, a second die blank back side pressing device and at least one pair of die blank die cavity supporting devices, wherein a reference seat adjusting groove which is penetrated from one end to the other end is formed at a middle position in the width direction of the base; the acting cylinder control device is fixed at one end of the base; the at least one adjusting seat is arranged on the base and in sliding fit with the reference seat adjusting groove; the fixed seat is fixedly arranged on the base and corresponds to the adjusting seat; the first die blank back side pressing device is arranged on the adjusting seat and connected with the acting cylinder control device;the second die blank back side pressing device is arranged on the fixed seat and connected with the acting cylinder control device; and the at least one pair of die blank die cavity supporting devices is arranged on the reference seat adjusting groove in a sliding way and positioned between the adjusting seat and the fixed seat. The structure has the advantages of guaranteeing the accuracy of subsequent processing and ensuring the thickness of a high-quality compact layer of the die cavity.
Owner:CHANGSHU JIANHUA MOLD TECH
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