A quality assurance method for manual reaming final holes of steel-aluminum sandwich parts
A technology of reaming and finishing holes, which is applied in the quality assurance field of manual reaming and final holes of steel-aluminum sandwich parts, can solve problems such as high failure rate and unqualified final hole quality, reduce failure rate, save labor cost, improve The effect of production efficiency
Active Publication Date: 2018-01-16
HARBIN
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Problems solved by technology
The quality of the final hole is unqualified and the failure rate is high
Method used
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[0024] Front beam assembly of a certain part of a certain type of machine, such as figure 2 As shown, the space size is not open, and the hole cannot be drilled by automatic feed, and the Φ12H8 bolt hole is reamed by manual reaming. The thickness of the interlayer of the assembly is 24.5mm, of which the steel bearing bush 6 has a thickness of 5mm, the aluminum flange 7 has a thickness of 5mm, the steel web 8 has a thickness of 3mm, the aluminum web 9 has a thickness of 3.5mm, the aluminum flange 10 has a thickness of 3mm, and the aluminum flange has a thickness of 3mm. The rib plate 11 has a thickness of 5 mm.
[0025] The first step: use the assembly jig to locate and clamp the assembly;
[0026] The second step: Drill the initial hole of the assembly part through the guide of the drilling mold on the assembly frame, and the size of the initial hole is Φ6mm;
[0027] The third step: clean up the excess;
[0028] Step 4: Remove the assembly from the shelf;
[0029] Step 5...
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Abstract
The invention belongs to the field of riveting assembly, and relates to a quality guarantee method for a manually reamed end hole of a steel-aluminum interlayer piece. The quality guarantee method comprises the steps that firstly, steel-aluminum interlayer parts arranged alternately are located and clamped, and an assembly piece is formed; secondly, the perpendicularity of a tool and a workpiece is guaranteed through a square master or a drill jig in a guiding manner, an initial hole of the assembly piece is drilled, if the diameter of the end hole is an even number, the aperture of the initial hole is 1 / 2 of the diameter of the end hole, and if the diameter of the end hole is an odd number, the aperture of the initial hole is obtained by subtracting 0.5 mm from 1 / 2 of the diameter of the end hole; thirdly, redundancies generated by drilling of the initial hole are cleared away; fourthly, chambering is carried out on the assembly piece; and fifthly, reaming is carried out on the assembly piece, reaming operation is completed in seven times, the engagement of reaming of the first four times is 0.1 mm / time, the engagement of reaming of the next two times is 0.05 mm / time, a reamer with the work diameter equal to the diameter of the end hole is used for reaming in reaming of the last time, and in reaming of the first six times, after reaming operation of each time is completed, redundancies are cleared away, the assembly piece is cooled for 10 minutes, and then reaming operation of the next time is carried out.
Description
technical field [0001] The invention belongs to the field of riveting assembly, and relates to a quality assurance method for manual reaming final holes of steel-aluminum interlayer parts. Background technique [0002] When the local operating space of the aircraft is not open, the tooling is insufficient, or the aircraft is being repaired in the field, the automatic feed drill cannot be used for reaming, and rivet holes or bolt holes can only be drilled by manual reaming. In the process of manual reaming of steel-aluminum alternately arranged interlayer assemblies with a thickness of 20 mm to 30 mm, faults such as hole diameter ellipse, hole wall scratches, and hole wall gnawing will occur. The quality of the final hole is unqualified and the failure rate is high. Contents of the invention [0003] Purpose of the present invention: to propose a quality assurance method for the manual reaming of the final hole of steel-aluminum sandwich parts, which fundamentally changes ...
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IPC IPC(8): B23P13/02
CPCB23P13/02
Inventor 高丽秋温洲佟飞冯钟乐张银峰
Owner HARBIN