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2. Types of press tools - Wikipedia

   en.wikipedia.org/wiki/Types_of_press_tools

   Blanking is the operation of cutting flat shapes from sheet metal. The outer area of metal remaining after a blanking operation is generally discarded as waste. Size of blank or product is the size of the die & clearance is given on punch. It is a metal cutting operation. In blanking, metal obtained after cutting is not a scrap if it is usable.

3. Blanking and piercing - Wikipedia

   en.wikipedia.org/wiki/Blanking_and_piercing

   The selection criteria of all process parameters are governed by the sheet thickness and by the strength of the work-piece material being pierced. The punch/die clearance is a crucial parameter, which determines the load at the cutting edge of the tool, commonly known as point pressure. Excessive point pressure can accelerate tool wear.

4. Shearing (manufacturing) - Wikipedia

   en.wikipedia.org/wiki/Shearing_(manufacturing)

   Shearing, also known as die cutting, [1] is a process that cuts stock without the formation of chips or the use of burning or melting. Strictly speaking, if the cutting blades are straight the process is called shearing; if the cutting blades are curved then they are shearing-type operations. [2] The most commonly sheared materials are in the ...

5. Punching - Wikipedia

   en.wikipedia.org/wiki/Punching

   Punching is a forming process that uses a punch press to force a tool, called a punch, through the workpiece to create a hole via shearing. Punching is applicable to a wide variety of materials that come in sheet form, including sheet metal, paper, vulcanized fibre and some forms of plastic sheet. The punch often passes through the work into a die.

6. Shear (sheet metal) - Wikipedia

   en.wikipedia.org/wiki/Shear_(sheet_metal)

   An alligator shear, historically known as a lever shear and sometimes as a crocodile shear, is a metal-cutting shear with a hinged jaw, powered by a flywheel or hydraulic cylinder. Alligator shears are generally set up as stand-alone shears; however, there are types for excavators. The jaw size can range from 4 to 36 in (100 to 910 mm) long.

7. Undercut (turning) - Wikipedia

   en.wikipedia.org/wiki/Undercut_(turning)

   In turning, an undercut is a recess in a diameter generally on the inside diameter of the part. An example of a turned part with and without an undercut. On turned parts an undercut is also known as a neck or "relief groove". They are often used at the end of the threaded portion of a shaft or screw to provide clearance for the cutting tool ...