Posts by accurateforstg

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Metal stamping processes are one of the most common methods used to shape sheet metal of many different materials into desired shapes. When the depth of the stamped part is equal to or greater than the maximum diameter of the part, it is considered deep drawn.

The deep draw process begins by feeding the desired metal or alloy into the machine either in a continuous strip or by individual sheet. The initial stage cuts out a circular blank to be used in the stamping process.

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Why Choose Accurate forming LLC

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Accurate Forming was established in 1955 and is recognized as a leader in the art and science of Deep-Draw Metal Forming.

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Accurate Forming is a Deep Draw Metal Stamper who was established in 1955. All of Accurate Forming’s operations take place in our 70,000 square foot facility located in Hamburg, NJ. Accurate Forming manufactures cylindrical shaped parts using transfer press technology. The size range for these parts ranges from .700” in length with a diameter of 1.562” all the way to 5.44” in length with a .400” diameter. Material thicknesses range from .007” thick up to .062” thick. Materials that are used in the deep draw manufacturing process are aluminum, cold rolled steel, pre-plated crs, stainless steel, copper, brass and other precious metal alloys.

What makes Accurate Forming unique is our ability to produce extremely high quality parts with long lengths, small diameters and very tight tolerances. Let Accurate Forming’s engineering expertise help you design, produce and receive the highest quality part you can get.

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Deep drawn metal stampings can be classified into 3 categories, simple, average & difficult. Simple drawn parts usually have the following characteristics; Straight one diameter shell, no critical visual requirements, corner radius equal to 3 times material thickness or greater, an overall length of 1 ½ to 2 ½ times the diameter of the part, an overall length tolerance of plus or minus .005, a wall thickness of .010 – .020 and a tolerance for the outside or inside diameter of the part of plus or minus .002.

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Let’s look at the different stations that we can have in the press and their functions. As mentioned previously, the first station is the blanking station. The blank is pierced out of the metal strip and then forced down to the transfer slide which moves the blank to the next station. The second station is called the cupping station. This is where the blank is first reduced. The reduction of the blank should not be any more than 45% of the blanks diameter which will avoid any tearing of the material. Following the second station or cupping station are a series of deep drawing stations. Depending on the press it is common to have up to 12 to 15 stations to form a finished part.

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