Coupling hole precision machining method

A technology of precision machining and dual small holes, which is applied in the field of precision machining of dual small holes, and can solve problems such as difficulty in ensuring the accuracy of the spatial position of the collision point

Active Publication Date: 2014-07-09
DALIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to overcome the shortcomings of the above-mentioned traditional processing methods, aiming at the problem that the spatial position accuracy o...

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  • Coupling hole precision machining method

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Embodiment Construction

[0043] The embodiment of the present invention will be described in detail in conjunction with the accompanying drawings and technical solutions, and the process of precision machining of dual small holes will be described. The diameter of the workpiece is 450mm, the thickness is 10mm, the diameter of the dual small holes is 1mm, and the design height of the collision point is h 0 is 15mm, the inclination angle α and the inclination angle β are both 45 degrees, the distance R is 200mm, the distance H is 10mm, and the two dual holes are through holes.

[0044] The first step is to ensure that the spindle of the machine tool is in a safe position before the workpiece 2 is clamped to avoid collisions; figure 1 As shown, the workpiece 2 is placed on the rotary table 1, and the workpiece 2 is adjusted to be coaxial with the rotary table 1. Four pressure plates 3 with bolts are evenly distributed on the rotary table 1, and the pressure plates 3 press the workpiece 2 to complete the ...

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Abstract

The invention belongs to the field of hole machining, and particularly relates to a coupling hole precision machining method. The method includes clamping a workpiece on a rotary workbench of a five-coordinate numerical-control drilling machine, machining a first hole of coupling holes in a numerical-control manner, detecting the actual internal contour of the first hole in a layered manner through a contact probe, calculating the actual axis of the first hole by the least square method, reversely calculating the drilling point coordinate of a second hole according to the design parameter requirements of colliding points, regenerating the numerical-control machining program of the second hole, and machining the second hole automatically. According to the method, on the basis of an integral strategy of measurement and processing, contour measurement, data processing and hole machining of the coupling holes can be completed by clamping the workpiece once, the machining requirements for colliding precision of coupling holes with different diameters and inclined angles can be met, machining efficiency is high, precision consistence is high, 'zeroing' processing of machining errors is performed on the colliding points, and coupling hole precision machining is realized.

Description

technical field [0001] The invention belongs to the field of small hole processing, in particular to a method for precision processing of dual small holes. Background technique [0002] With the continuous improvement of the service performance of aerospace equipment, higher requirements are put forward for the manufacturing quality of liquid rocket engines. The injector disk is one of the key parts of large liquid rocket engines, and it is also a difficult part to machine. Hundreds of pairs of small holes with different diameters and sizes are designed on the injector disk to form a hole array, so as to realize high-speed collision and rapid atomization of combustion agent and oxidant after high-pressure injection, and form a stable combustion surface. In order to ensure the atomization effect and the stable combustion of the medium, the collision accuracy of the paired small holes is very important. It is required that the actual axes of the two paired holes after process...

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Application Information

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IPC IPC(8): B23B35/00
CPCB23B35/00
Inventor 刘海波王永青贾振元董江华卢博薄其乐王福吉
Owner DALIAN UNIV OF TECH
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