CN104482892A

CN104482892A - Reference transmission method for space special-shaped casting cabin

Info

Publication number: CN104482892A
Application number: CN201410569290.1A
Authority: CN
Inventors: 尹峰; 姚为; 胡敏浩; 王波; 张素敏; 张京京; 郭晓琳
Original assignee: Beijing Hangxing Technology Development Co Ltd
Current assignee: Beijing Hangxing Technology Development Co Ltd
Priority date: 2013-12-09
Filing date: 2014-10-22
Publication date: 2015-04-01
Anticipated expiration: 2034-10-22
Also published as: CN104482892B

Abstract

The invention discloses a reference transmission method for a space special-shaped casting cabin. The method comprises the following steps: the step 1) determining a non-processing surface of a single casting cabin, setting a horizon reference and a symmetry reference and carrying out reference transmission between the casting and machining; the step 2) reserving a process boss on the non-processing surface of the single casting cabin and machining processing planes in the horizontal direction and the symmetrical direction on the process boss; the step 3) after the whole welding of the casting cabin is finished, re-machining the processing planes in the horizontal direction and the symmetrical direction on the process boss again to serve as reference transmission between the welding and follow-up process; and the step 4) after all processes are finished, removing the process boss, and marking reference marks in the horizontal direction and the symmetrical direction on the outer surface of the cabin. Through the reference transmission method, the reference of special-shaped cabin is transmitted to the plane reference, thereby improving alignment efficiency and precision in the processing and manufacturing process.

Description

The datum tool method of spatial special casting cabin body

Technical field

The invention belongs to processing and manufacturing technical field, relate to the datum tool method of a kind of spatial special casting cabin body.

Background technology

Along with the development of Aero-Space cause, the performance of aircraft, spacecraft is had higher requirement, with regard to the manufacture of modern spacecraft, be characterized in lightweight, structural strength is high.Reduce self structure weight, just mean improve aircraft maneuverability, increase and take load-carrying ability and farther flying distance, for this reason, in structural design, the large complicated lightweight structure of more employing, but bring huge challenge to manufacturing technology, wherein the yielding meeting of thin-walled causes the error of construction profile degree of conformity, and datum tool error etc. in multiple operation circulation.

Lot of domestic and international research all concentrates on machine and adds force simulation in process, but processes medium-and-large-sized complex thin-wall cabin body to reality both at home and abroad, and the datum tool Study on Problems in each process is little.

Summary of the invention

Technical scheme of the present invention is the difficult point in order to overcome datum tool difficulty in the body manufacture process of special-shaped casting cabin, and proposes the datum tool method of a kind of spatial special casting cabin body.The method realizes the datum tool in special-shaped casting cabin body processing and manufacturing process, solves the shortcoming of special-shaped benchmark centering difficulty in manufacture process.

Technical scheme of the present invention:

A datum tool method for spatial special casting cabin body, comprises step as follows:

The first step: the non-finished surface determining single casting cabin body, setting horizontal reference and symmetric reference, carry out datum tool between casting and machining;

Second step: at the non-processing of single casting cabin body reserved false boss on the surface, the processing plane of level of processing direction and symmetry direction on false boss, this processing plane, as the benchmark of the assembling of casting cabin body, welding, carries out datum tool between machining and assembling, welding;

3rd step: after casting cabin body integral solder completes, the again processing plane of level of processing direction and symmetry direction on false boss, as the datum tool between welding with subsequent handling;

4th step: after all process steps machines, removes false boss, cabin external surface marks horizontal direction and symmetry direction reference mark.

The method of described setting horizontal reference and symmetric reference is:

Determine symmetrical plane line to cast each Liang Tiaoneijin center, the upper and lower two ends of cabin body, determine axial horizontal upper thread with anterior end surface, check with opposite side end face, mark horizontal datum and symmetrical plane line in part border, as the benchmark at processing large of two ends.Just horizontal reference and symmetric reference is obtained after horizontal datum and symmetrical plane line obtain.

Beneficial effect of the present invention:

By Reference Transforming, by the datum tool of special-shaped cabin body on datum plane, use plane as transmission benchmark, improve the centering efficiency in processing and manufacturing process and precision.

Accompanying drawing explanation

Fig. 1 is the front view that false boss arranges schematic diagram;

Fig. 2 is the cut-open view (analysing and observe position for the sectional position of boss 1 shown in Fig. 1) that false boss arranges schematic diagram;

Fig. 3 is the side view that false boss arranges schematic diagram.

Note: size A represents that horizontal datum is to the horizontal finished surface distance of false boss, and size B represents that symmetrical plane line is to false boss side finished surface distance

Embodiment

Principle of work: the present invention is the datum tool method of a kind of spatial special casting cabin body, pass through Reference Transforming, by the datum tool of special-shaped cabin body on datum plane, use plane as transmission benchmark, solve the problem of special-shaped cabin body datum tool difficulty in processing and manufacturing process.

Datum tool method of the present invention, its technical scheme is: the level at single hop core cavity two ends and symmetric position (being vertical-horizontal direction) above set centering benchmark, as casting, the unified benchmark that thermal treatment and machine added-time rule, symmetrical plane line is determined with each Liang Tiaoneijin center, upper and lower two ends, with anterior end surface determination axial location, i.e. horizontal upper thread, check with opposite side end face, horizontal upper thread and symmetrical plane line is marked in part border, as the benchmark at processing large of two ends, inner chamber is rule and extends to outside surface, extend on boss simultaneously, false boss 1 identifies the position of outlet, now, false boss 1 there has been initial roughing benchmark effect.Respectively be cast with 2 false bosses 1 each section of two sides, the technological datum adding inner chamber in man-hour can be delivered on false boss, and as the benchmark of follow-up welding, detection and overall processing, false boss 1 arranges schematic diagram as shown in Figure 1,2 and 3.In figure, size A represents that horizontal upper thread is to the horizontal finished surface distance of false boss, and size B represents that symmetrical plane line is to false boss side finished surface distance.When assembly and overall processing, each false boss 1 level and vertical direction position co-ordination, the relative polishing of difference, according to the difference situation of position co-ordination, carry out machining benchmark correction (according to cabin body processing situation, generally choosing the intermediate value of difference as correction).In single hop process, ensure that docking seam is consistent with the Cutter coordinate system of false boss 1 with the Cutter coordinate system of docking plane, equally, after assembly welding completes, the deformation of each group welding piece of repetition measurement, according to deformation, suitable micro-adjusting process benchmark, make each single hop cabin body on group welding piece, realize symmetrical plane line and horizontal datum coincidence, false boss 1 size of each assembly welding section is revised again as subsequent reference.After overall processing completes, remove false boss 1, adopt the methods such as line or marking to do horizontal symmetrical mark.

Instantiation

The part of test processing is spatial special casting cabin body, be formed by connecting by five sections, the planning of its work flow is as follows: after five sections of roughing completing single hop respectively, semi-finishing, carry out one or two sections of assembly weldings, postwelding processing boss 1 and both ends of the surface, docking seam etc., 345 sections of assembly weldings, postwelding processing boss 1 and both ends of the surface, docking seam etc.Then two grip assembly welding, overall processing after welding.

It is as follows that main reference transmits design process:

The level and symmetric position at single hop core cavity two ends set centering benchmark, end face and horizontal vertical bar leave centering plane, as the unified benchmark that casting, thermal treatment and machine added-time rule.2 false bosses 1 are respectively cast with each section of two sides, the technological datum adding inner chamber in man-hour can be delivered on false boss, horizontal direction on false boss 1 and the processing plane of symmetry direction can as the benchmark of follow-up welding, detection and overall processing, and false boss arranges schematic diagram as shown in Figure 1.When assembly and overall processing, each boss 1 level and vertical (symmetry) direction position co-ordination, the relative polishing of difference, constantly revises in processing.

The present invention proposes the datum tool new method of a kind of spatial special casting cabin body, improve a datum tool difficult problem in spatial special casting cabin body processing and manufacturing process, improve datum tool precision, decrease benchmark alignment time.This intellectual achievement applies to produce very large economic benefit in actual production, has very strong application prospect.

Claims

1. a datum tool method for spatial special casting cabin body, is characterized in that, comprise step as follows:

2. the datum tool method of spatial special casting cabin according to claim 1 body, it is characterized in that, symmetrical plane line is determined to cast each Liang Tiaoneijin center, the upper and lower two ends of cabin body, axial horizontal upper thread is determined with anterior end surface, check with opposite side end face, horizontal datum and symmetrical plane line is marked, as the benchmark at processing large of two ends in part border.