Measuring method of an online measuring device for a space point
A technology of measuring devices and measuring methods, applied in the direction of program control, instrument, computer control, etc., to achieve the effect of reducing quality problems, reducing out-of-tolerance and waste products, and reducing turnaround time
Active Publication Date: 2020-05-01
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
Comparing the measured actual value with the theoretical value, the difference between the two is the processing allowance, thus solving the problem of online measurement of space points on the machine tool and improving processing efficiency and processing quality
Method used
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Embodiment Construction
[0022] The present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited by the accompanying drawings.
[0023] An online measuring device for space points, comprising a standard measuring block 5, a standard measuring rod 3, a standard craft ball 4, and a set of standard measuring seats 2 with selectable angles. The installation slots include four angle installation slots of 0°, 30°, 60°, and 90°.
[0024] The measurement method of the online measurement device of the space point, the specific measurement method is as follows:
[0025] (1) According to the actual shape of the part, select the installation slot with a suitable angle, install the standard measuring rod 3 and the standard craft ball 4 on the clamping system 1 of the machine tool, and perform clamping and alignment. The coordinate origin of the spindle of the machine tool (X 0 , Y 0 ) has been aligned with the ...
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The invention relates to the field of actual measurement of numerical control milling of the profile of the mounting base of an aero engine case, and particularly relates to an online measuring deviceand a measuring method for space points. The online measuring device includes a standard measuring block, a standard measuring rod, a standard craft ball, and a set of angle-selectable standard measuring base. A multi-angle mounting slot is fixed on the standard measuring base. The actual allowance of machining, namely, the actual machining amount for subsequent machining, is determined by comparing the actual measured value and the theoretical calculated value. Online measurement is adopted, and the turnover time of offline measurement can be reduced. The error caused by multiple times of clamping and aligning of machining parts in offline measurement is avoided, the number of quality problems produced in case part mounting base profile milling is greatly reduced, and the out-of-tolerance problem and waste caused by measurement are significantly reduced. A standard measuring base with angle selectable among multiple angles is provided, so that the device can be used to measure partsof different actual shapes of various cases, and the phenomenon of interference in actual measurement caused by the use of a single angle is avoided.
Description
technical field [0001] The invention relates to the actual measurement field of numerically controlled milling of the mounting seat profile of an aero-engine case, in particular to an on-line measurement device for a space point, which is suitable for the processing and measurement of all parts of a similar structure. Background technique [0002] Aeroengine casings are parts with complex structures. The casings are divided into high and low pressure compressor casings, high and low pressure turbine casings, combustion chamber casings, combustion chamber casings, transmission casings, etc. Due to the complex surface structure of the casing, there are a large number of mounting seats on the cavity, and the precision requirements are very high, even reaching ±0.02mm. When processing the mounting seat, since the positioning dimension of the mounting seat given in the design drawing is often spatial, there is no metal solid material in the part specified by the positioning dimen...
Claims
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IPC IPC(8): G05B19/401
CPCG05B19/401G05B2219/34242
Inventor 郑振华侯波王欣
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION