Manufacturing technology 6


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Manufacturing technology 6

  1. 1. Quezon City Polytechnic University Batasan Campus IBP. Rd. Batasan Hills, Quezon City Manufacturing Technology 6 (Deformation of Materials) Turret PunchingGequillana, Kenneth John E.BSIE – 3B Prof. Norberto De Jesus
  2. 2. Turret Punching - Turret punching is a process, where work pieces are punched out of a metal sheet. The distinctive feature of turret punching is that the machine performing punching (a turret puncher) method to a sheet material either metal or polymer (plastic). - A CNC machine - is a metal forming process that uses a punch press to force a tool, called a punch, through the workpiece to create a hole. A scrap slug from the hole is deposited into the die in the process. Depending on the material being punched this slug may be recycled and reused or discarded. Punching is often the cheapest method for creating holes in sheet metal in medium to high production volumes. When a specially shaped punch is used to create multiple usable parts from a sheet of material the process is known as blanking. In forging applications the work is often punched while hot, and this is called hot punching.ProcessThe Turret Punching process produces shapes by selectively removing material from sheet metals. Thesesheets are clamped into the machine on a table that is programmed to move to a specific X/Y locationwithin the matrix of the machine. The correct punch shape and size is selected at the turret and themachine actuates the punch to produce the desired hole.Punching characteristics Punching is the most cost effective process of making holes in strip or sheet metal for average to high fabrication It is able to create multiple shaped holes Creates a burnished region roll-over, and die break on sidewall of the resulting holeMaterials supportedSheet Metals including: Aluminum Galvanized Steel Carbon Steel Stainless Steel Brass Bronze Copper Monel
  3. 3. PlasticAdvantage/s Fast and accurate over and over again without variation. Take a less time of work than the manual punching machine. CNC punching machines commonly handle up to 1200 hits per minute and many have automated loading systems allowing for continuous operation. All kinds of metal can be turret punched, also hard stainless spring steel and some polymere types can be turret punched.Disadvantage/s A turret punching machine is an expensive machine It cannot punch a metal with a thickness of 6mm. Occupies large space in the work area. Warping may occur if many holes are punched or much material is removed from the sheet