Aero-engine pipeline batch angular positioning method

Abstract

An aero-engine pipeline batch angular positioning method, the steps are: from the same specification of a batch of pipes and tees, each is fixed in a fixture clamp, realizing the accurate butt joint of the pipes and tees; completing the angular positioning line of the first tee and the first pipe; reserving the first pipe, constantly replacing the tee, taking the line on the first pipe as the reference line to complete the line of the subsequent tee; when completing the angular positioning line of the last tee and the first pipe, reserving the last tee, constantly replacing the pipe, taking the line on the last tee as the reference line to complete the line of the subsequent pipe; when completing the angular positioning line of the last tee and the last pipe, removing them, and the batch angular positioning line is completed. The application realizes the optimization of the pipe and tee angular positioning process, improves the angular positioning precision stability and work efficiency, and fully meets the batch production requirements, thereby meeting the needs of the shortening of the aero-engine development cycle.

Description

Technical Field

[0001] This invention belongs to the field of aero-engine component manufacturing technology, and in particular relates to a method for batch angular positioning of aero-engine pipelines. Background Technology

[0002] There are numerous pipelines in the hydraulic system, fuel system, and environmental control system of aero engines, which are used to transmit power or transport working media for the normal operation of each system of the aero engine, and to meet the needs of the aero engine for normal operation and mission execution.

[0003] Taking a certain type of aero-engine as an example, there are more than 200 conduits in various systems. In order to adapt to the compact and complex internal structure of the aero-engine, its pipeline structure is also quite complex, and the conduits in the pipeline have different shapes. Pipeline manufacturing is an important part of the aero-engine manufacturing process.

[0004] Currently, in the existing pipeline manufacturing process, it is necessary to first make conduits of various bends and tees in the pipeline. Then, the conduits and tees are clamped and fixed in the tooling fixture to achieve angular positioning of the conduits and tees. After that, a line is drawn between the angularly positioned conduits and tees to provide a alignment reference for subsequent welding of the conduits and tees.

[0005] However, when using the existing angular positioning process for conduits and tees, the conduits and tees are angularly positioned one group after another. That is, after each group of conduits and tees is angularly positioned, it is necessary to remove the group of conduits and tees from the tooling fixture, then install another group of conduits and tees, and then perform angular positioning on the group of conduits and tees again, and so on, until the last group of conduits and tees is angularly positioned.

[0006] However, as the development cycle of aero-engines continues to shorten, the existing duct and T-junction angular positioning processes are becoming increasingly unable to meet the requirements of aero-engine development cycles. This is because the existing duct and T-junction angular positioning processes suffer from poor stability of angular positioning accuracy and low efficiency in angular positioning, especially during the mass production stage, where these problems become more pronounced. Summary of the Invention

[0007] To address the problems existing in the prior art, this invention provides a method for mass production angular positioning of aero-engine pipelines. It optimizes the angular positioning process of ducts and tees, significantly improves the stability of angular positioning accuracy and the efficiency of angular positioning, and can fully meet the requirements of mass production, thereby meeting the need for the ever-shortening development cycle of aero-engines.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a method for batch angular positioning of aero-engine pipelines, comprising the following steps:

[0009] Step 1: Randomly select one conduit from a batch of conduits of the same specification, and fix the first conduit selected into the tooling fixture according to the design angle requirements;

[0010] Step 2: Take out one tee from a batch of tees of the same specifications, and fix the first tee into the tooling fixture according to the design angle requirements, so that the first tee is precisely connected to the first conduit.

[0011] Step 3: With the tee and catheter in the connected state, use a scribing tool to scribing a line at the joint between the tee and catheter. The scribing line needs to penetrate through the outer surface of both the tee and catheter, and the scribing line needs to be parallel to the centerline of the straight section of the catheter joint.

[0012] Step 4: After the angular positioning markings are completed between the first tee and the first conduit, keep the first conduit in the fixture and remove the first tee from the fixture.

[0013] Step 5: Take out another tee from the batch of the same specifications, and fix the second tee into the tooling fixture according to the design angle requirements, so that the second tee is precisely connected to the first conduit.

[0014] Step 6: Using the line on the first conduit as a baseline, use a scribing tool to scribing on the second tee. The line on the second tee will serve as an extension of the line on the first conduit.

[0015] Step 7: After the angular positioning markings are completed between the second tee and the first conduit, the first conduit is still kept in the tooling fixture, and the second tee needs to be removed from the tooling fixture.

[0016] Step 8: Following the same process of fixing and marking the second tee, complete the angular positioning marking for all the remaining tees of the same specification in sequence;

[0017] Step 9: After the angular positioning markings are completed between the last tee and the first conduit, keep the last tee in the fixture and remove the first conduit from the fixture.

[0018] Step 10: Take out another conduit from a batch of conduits of the same specification, and fix the second conduit into the tooling fixture according to the design angle requirements, so that the last tee and the second conduit are precisely connected.

[0019] Step 11: Using the line on the last tee as a baseline, use a scribing tool to scribing on the second conduit. The line on the second conduit will serve as an extension of the line on the last tee.

[0020] Step 12: After the angular positioning markings are completed between the last tee and the second conduit, the last tee is still kept in the fixture, and the second conduit needs to be removed from the fixture.

[0021] Step 13: Following the same process of fixing and marking the second conduit, complete the angular positioning marking for all the remaining conduits of the same specification.

[0022] Step Fourteen: After the angular positioning markings are completed between the last tee and the last conduit, remove the last tee and the last conduit from the tooling fixture at the same time. At this point, the batch angular positioning markings of the conduits and tees are all completed.

[0023] The beneficial effects of this invention are:

[0024] The mass production angular positioning method for aero-engine pipelines of the present invention optimizes the angular positioning process of ducts and tees, significantly improves the stability of angular positioning accuracy and the efficiency of angular positioning, and can fully meet the requirements of mass production, thereby meeting the need for the continuous shortening of the aero-engine development cycle. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments.

[0026] A method for batch angular positioning of aero-engine piping includes the following steps:

[0027] Step 1: Randomly select one conduit from a batch of conduits of the same specification, and fix the first conduit selected into the tooling fixture according to the design angle requirements;

[0028] Step 2: Take out one tee from a batch of tees of the same specifications, and fix the first tee into the tooling fixture according to the design angle requirements, so that the first tee is precisely connected to the first conduit.

[0029] Step 3: With the tee and catheter in the connected state, use a scribing tool to scribing a line at the joint between the tee and catheter. The scribing line needs to penetrate through the outer surface of both the tee and catheter, and the scribing line needs to be parallel to the centerline of the straight section of the catheter joint.

[0030] Step 4: After the angular positioning markings are completed between the first tee and the first conduit, keep the first conduit in the fixture and remove the first tee from the fixture.

[0031] Step 5: Take out another tee from the batch of the same specifications, and fix the second tee into the tooling fixture according to the design angle requirements, so that the second tee is precisely connected to the first conduit.

[0032] Step 6: Using the line on the first conduit as a baseline, use a scribing tool to scribing on the second tee. The line on the second tee will serve as an extension of the line on the first conduit.

[0033] Step 7: After the angular positioning markings are completed between the second tee and the first conduit, the first conduit is still kept in the tooling fixture, and the second tee needs to be removed from the tooling fixture.

[0034] Step 8: Following the same process of fixing and marking the second tee, complete the angular positioning marking for all the remaining tees of the same specification in sequence;

[0035] Step 9: After the angular positioning markings are completed between the last tee and the first conduit, keep the last tee in the fixture and remove the first conduit from the fixture.

[0036] Step 10: Take out another conduit from a batch of conduits of the same specification, and fix the second conduit into the tooling fixture according to the design angle requirements, so that the last tee and the second conduit are precisely connected.

[0037] Step 11: Using the line on the last tee as a baseline, use a scribing tool to scribing on the second conduit. The line on the second conduit will serve as an extension of the line on the last tee.

[0038] Step 12: After the angular positioning markings are completed between the last tee and the second conduit, the last tee is still kept in the fixture, and the second conduit needs to be removed from the fixture.

[0039] Step 13: Following the same process of fixing and marking the second conduit, complete the angular positioning marking for all the remaining conduits of the same specification.

[0040] Step Fourteen: After the angular positioning markings are completed between the last tee and the last conduit, remove the last tee and the last conduit from the tooling fixture at the same time. At this point, the batch angular positioning markings of the conduits and tees are all completed.

[0041] When the above-mentioned optimized angular positioning process for conduits and tees is adopted, the scribing line on the first conduit is used as the baseline, which ensures that all subsequent tees connected to it have the same scribing standard. Furthermore, by using the scribing line on the last tee as the baseline, the scribing standard of all subsequent conduits connected to it can also be ensured. Ultimately, the angular positioning scribing of all conduits and tees is unified, providing a precision guarantee for the subsequent batch welding of conduits and tees.

[0042] Meanwhile, during the batch angular positioning scribing process of ducts and tees, since only one duct or tee needs to be disassembled when each set of ducts and tees is paired for scribing, it is not necessary to disassemble both the duct and the tee at the same time. Therefore, at least half of the working time can be saved, which greatly improves work efficiency and meets the actual needs of the ever-shortening development cycle of aero-engines.

[0043] The solutions described in the embodiments are not intended to limit the scope of patent protection of this invention. All equivalent implementations or modifications that do not depart from the scope of this invention are included in the patent scope of this case.

Claims

1. A method for batch angular positioning of an aeroengine pipe, characterized in that, It comprises the following steps: Step one: randomly take out a pipe from a batch of pipes of the same specification, and fix the first pipe taken out to a fixture according to the design angle requirement; Step two: randomly take out a tee from a batch of tees of the same specification, and also fix the first tee taken out to the fixture according to the design angle requirement, so that the first tee is accurately connected with the first pipe; Step three: when the first tee and the first pipe are in the connected state, use a marking tool to mark on the joint of the tee and the pipe, the marking needs to penetrate the outer surface of the tee and the pipe, and the marking needs to be parallel to the central axis of the straight line segment of the pipe joint; Step four: after the angular positioning marking between the first tee and the first pipe is completed, the first pipe is retained in the fixture, and the first tee is removed from the fixture; Step five: randomly take out another tee from a batch of tees of the same specification, and fix the second tee taken out to the fixture according to the design angle requirement, so that the second tee is accurately connected with the first pipe; Step six: use the marking on the first pipe as the reference line, and use the marking tool to mark on the second tee, the marking on the second tee being the extension of the marking on the first pipe; Step seven: after the angular positioning marking between the second tee and the first pipe is completed, the first pipe is still retained in the fixture, and the second tee needs to be removed from the fixture; Step eight: according to the fixing and marking process of the second tee, angular positioning marking of all the remaining tees of the same specification is sequentially completed; Step nine: after the angular positioning marking between the last tee and the first pipe is completed, the last tee is retained in the fixture, and the first pipe is removed from the fixture; Step ten: randomly take out another pipe from a batch of pipes of the same specification, and fix the second pipe taken out to the fixture according to the design angle requirement, so that the last tee is accurately connected with the second pipe; Step eleven: use the marking on the last tee as the reference line, and use the marking tool to mark on the second pipe, the marking on the second pipe being the extension of the marking on the last tee; Step twelve: after the angular positioning marking between the last tee and the second pipe is completed, the last tee is still retained in the fixture, and the second pipe needs to be removed from the fixture; Step thirteen: according to the fixing and marking process of the second pipe, angular positioning marking of all the remaining pipes of the same specification is sequentially completed; Step fourteen: after the angular positioning marking between the last tee and the last pipe is completed, the last tee and the last pipe are simultaneously removed from the fixture, at this time, the batch angular positioning marking of the pipes and the tees is completed.