Alignment method for guaranteeing symmetry degree of dovetail groove pin hole
A dovetail groove and symmetry technology, which is applied to measuring devices, instruments, etc., can solve the problems of difficulty in aligning the symmetry of the pin hole in the dovetail groove, difficult processing, etc. Effect
Inactive Publication Date: 2017-04-26
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology
[0003] In view of this, the object of the present invention is to provide a method for aligning the dovetail pin hole symmetry, so as to solve the difficulty in aligning the pin hole symmetry in the dovetail slot of the existing engine disc parts and bring difficulties to processing technical issues
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment
[0017] A method for aligning to ensure the symmetry of dovetail pin holes comprises the following steps:
[0018] (1) Prepare the preliminary measurement program on the DMU80P machine tool, and install the disc probe on the machine tool spindle, and then clamp the parts to be processed on the turntable of the DMU80P five-axis machining center processing platform;
[0019] (2) Compile the alignment program for measuring the dovetail groove, so as to start the measuring device to measure the dovetail groove;
[0020] (3) Use a disk-type probe to construct a plane on the bottom plane of the dovetail groove of the part to be processed, and construct the cross-section of the pin hole in the dovetail groove along the slope of the dovetail groove and the height L value from the upper end surface of the part;
[0021] (4) According to the technical requirement T dimension, measure the coordinate values of two intersection points on a plane parallel to the bottom plane of the dovetai...
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The invention, which belongs to the technical field of processing of plate type parts of the aero-engine, especially relates to an alignment method for guaranteeing a symmetry degree of a dovetail groove pin hole. A to-be-processed part is installed and clamped at a processing platform; an alignment program of a dovetail groove is compiled and measured; a plane is formed at a bottom plane of a dovetail groove of the to-be-processed part and a cross section of a pin hole at the dovetail groove is constructed along the oblique plane of the dovetail groove at an L-value height to the upper end surface of the part; and on the basis of a technical requirement T dimension, coordinate values of two intersection points are measured at a plane parallel to the bottom plane of the dovetail groove of the to-be-processed part at a certain height, so that a precise coordinate point and a precise vector angle of the pin hole are obtained. The alignment method has advantages of simple and convenient operation, high processing efficiency, and high and reliable precision.
Description
technical field [0001] The invention relates to the technical field of aero-engine disc parts processing, in particular to a method for aligning to ensure the symmetry of dovetail groove pin holes. Background technique [0002] Aeroengine disc parts are the core components in the field of aviation technology. The connection between discs and blade parts usually adopts tenon and groove positioning surface, pin hole positioning and blade tenon joint, etc. Therefore, the processing accuracy requirements for tenon groove and pin hole quite high. As far as the symmetry processing of the dovetail pin hole is concerned, the alignment of the symmetry of the traditional dovetail pin hole depends on the operator’s processing experience, and the calibration is done by using the indexing plate, double rolling rods and dial indicator. Since it is difficult to align and locate the processing coordinates of the pin holes, it takes a long time to correct the symmetry of the dovetail groove...
Claims
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Login to View More IPC IPC(8): G01B21/24
CPCG01B21/24
Inventor 李明林马靓陈飞吴再豪夏波
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD