What's Brake Press Tooling for sheet metal bending?
Upper Beam for pressbrakes
The upper beam is an integral part of the press brake and features a kind of rail which the punch holder will mount to. On down acting pressbrakes this is the part of the machine that moves, transferring power to the work piece.
Punch Holder for pressbrakes
The punch holder attaches semi-permanently to the upper beam and serves to hold a variety of pressbrake punches. They come in two basic forms, European and American, understanding the difference is important. See our post on European Vs. American Style Tooling for more information. Punch holders will typically have a built in shimming mechanism for balancing them with the lower die.
Punch for pressbrakes
Sheet Bending Punches are the upper part of the tooling system and are classified by their Tip Angle, Relief Shape and their Installed Height. Standard Tip Angles are 30 °, 45 °, 60 °, 75 °, 88 ° and 90 °. The 30 ° and 45 ° types are known as acute punches. 60 ° and 75 ° Punches are used for Air Bending. 88 ° and 90 ° Punches are used for Bottom Bending. 90 ° Punches will be used for Coining. The relief shape allows for return bends to fold into the punch area.
The installed height of press brake tooling is the distance from the tip of the punch to where it contacts the upper beam / holder. For European Tooling there are 7 standard heights. 65mm, 67mm, 70mm, 90mm, 95mm, 104mm, and 105mm.
Punches come in two styles when connecting to the upper holder, European Style and American Style. European Tooling has an offset holder where American Tooling has an inline holder.
When bending deep boxes which have long flanges around a base tab you’ll want to investigate different tooling options. Some are basic such as extending the punch holder and some are a bit more creative such as window bending and 30-60 bending.
Work Piece which used on bending brakes
Commonly referred to as the work piece the sheet metal being bending is the driving force for all tooling selection. The type of material, its mechanical properties and the intended bends drive all other aspects of the tooling set up. Sheet metal is classified by it’s material and its gauge. The gauge is a numerical value assigned to the thickness of the metal.
The bottom section of the tooling is known as a die. Dies are classified by the shape of the groove, the number of grooves and the height of the die. The most common shape of metal pressbrake dies is a v die, which, as its name suggests, is a block of tooling steel which has a v shaped groove cut into it.
A v die with a single groove is known as a 1V Die, dies with two grooves are known as 2V Dies and so on. 2V Dies will always feature the same angle on both grooves to prevent accidental damage, however the v opening size will typically be different. This allows an operator to quickly switch from bending a light gauge to bending a heavy gauge without having to retrieve a new die. Second to v dies the most common type is a U Die. U dies feature a rectangular cutout with 45 ° chamfered edges and flat tops. Because of this geometry U Dies lend themselves to having grooves cut into more than one side of the die. It’s not uncommon to see a 3U Die.
Pressbrakes Rail for Sheet Metal Bending
The pressbrake rail is a manufactured piece of tooling which is attached to the press brake and holds various dies. This piece of tooling allows you to level and straighten a single piece of tooling and then interchange dies with confidence.
Pressbrakes Lower Beam / Die Holder
The lower beam is part of the actual press brake which features a kind of clamp for holding the raid or die set. On up acting brakes the lower beam is moves upward to bend the metal. When inspecting and maintaining your brake it is crucial to make sure the lower beam is clean and level in relation to the punch holder.
AHYW China Yawei machine factory can design different types pressbrakes toolings for your sheet metal bending requirements