Aircraft Sheet Metal Forming

The rubber pad is contained in a metal box that just fits around a lower platen.

Aircraft sheet metal forming.

Name several methods of forming sheet metal. The rubber pad press forms sheet metal parts by press forming a part over a male die with a rubber pad acting as the conforming female die. This process is often referred to as hydroforming which is actually a similar process which uses a different forming method. Transverse sheet stretch forming press fet t.

They also may be held together with bolts by drilling through form blocks and the metal provided the holes do not affect the strength of the finished part. It is customary to refer to a material below the thickness of 6 35 mm as a sheet and thicker materials as plate. Sheet metal forming is quite common for making shaped components from soda cans to automotive car bodies. What are the dimensions of a properly formed rivet head.

Forming sheet metal requires a variety of tools and equipment both powered and manual such as the piccolo former shrinking and stretching tools form blocks and specialized hammers and mallets. The forming blocks may be equipped with small aligning pins to help line up the blocks and to hold the metal in place or they may be held together by c clamps or a vise. Grain of the metal natural grain of the material is formed as the sheet is rolled from molten ingot. Sheet stretch forming is a fast economical and accurate way to form a large panel from a metal sheet.

The head should be 1 1 2 times the shank diameter in width and 1 2 the shank diameter in height. Corona ca chicago il wasilla ak peachtree city ga brantford on canada. Bend allowance ba refers to the curved section of metal within the bend the portion of metal that is curved in bending. Of all the aircraft metals pure aluminum is the most easily formed.

Tempered sheet stock is used in forming operations whenever possible in typical repairs. Bend lines should be made to lie at a 90 angle to the grain of the metal if possible. The process involves stretching the sheet to a calculated yield point and forming it over a tool. Bending or folding stretching shrinking bumping and crimping.

A minimum radius of bend is specified for each type of aircraft sheet metal.