A processing method for butt joint hole of liquid rocket engine frame
A technology of liquid rocket and processing method, applied in the direction of drilling dies for workpieces, etc., can solve problems such as difficulty in ensuring processing accuracy, complex process plan, paranoia and out-of-tolerance of hole processing position, etc., to improve processing quality, avoid manufacturing precision, The effect of ensuring manufacturing precision
Active Publication Date: 2020-05-08
XIAN SPACE ENGINE CO LTD
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Problems solved by technology
During the processing, first put the rack on the platform, preliminarily locate the position, detect the specific position of each butt joint through the coordinate tracker, and determine the positioning position of the split drilling jig, then process it through the radial arm drill and the split jig jig Butt joint hole, this kind of process plan is more complicated, and it is difficult to ensure the machining accuracy during the process of process implementation, and there is often the problem of out-of-tolerance machining position of the hole, which affects the overall assembly of the engine and the rocket body
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[0058] Such as figure 1 – Figure 4 And shown in table 1, a kind of processing method of liquid rocket motor frame docking hole, this frame is an octagonal platform, and octagonal platform comprises four ribs of small end (lower end), eight ribs of big end and connecting small The eight ribs at the end and the big end, the small end of the octagonal platform is welded with a cross beam, each beam in the cross beam is connected with the four edges at the small end of the octagonal platform at 45°, and each of the eight vertices at the large end of the octagonal platform is welded one Butt joints, the method is to open connection holes on the eight butt joints, and the connection holes are used to connect with the rocket body compartment;
[0059] The steps of the method include:
[0060] (1) Processing drilling jig tooling, the drilling jig tooling is a disc with a weight-reducing hole, with a circumferential machining groove on the disc, a pin hole in the center of the machi...
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Abstract
The invention relates to a processing method for a butt joint hole of a liquid rocket engine rack, in particular to a processing method for a liquid rocket engine rack butt joint hole and a design scheme for processing a drilling mold, and belongs to the technical field of processing a large liquid rocket engine rack butt joint hole , the diameter of the frame of the liquid rocket engine aimed at in the present invention is 3000-3500mm, which belongs to a large frame. The invention improves the processing efficiency of the butt joint hole of the large frame of the liquid rocket engine through a reasonable process method and the design and precise processing of the large drilling mold.
Description
technical field [0001] The invention relates to a processing method for a butt joint hole of a liquid rocket engine rack, in particular to a processing method for a liquid rocket engine rack butt joint hole and a design scheme for processing a drilling mold, and belongs to the technical field of processing a large liquid rocket engine rack butt joint hole , the frame diameter of liquid rocket engine aimed at in the present invention is 3000-3500mm, belongs to large frame. Background technique [0002] The thrust chamber of the liquid rocket engine is installed under the frame, and is docked with the rocket body cabin through the frame docking hole. The position of the hole will determine the thrust direction of the entire rocket to a certain extent. In the processing of the docking holes of the large-scale rocket engine rack, since the docking holes are distributed on a distribution circle with a large diameter of 3000 mm, and there is no large machining equipment, it is ini...
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IPC IPC(8): B23B35/00B23B47/28
CPCB23B35/00B23B47/28
Inventor 许桐晔陈磊王东贺崇森梁彦龙
Owner XIAN SPACE ENGINE CO LTD