Hugh smith v vertical plate bending machine

HUGH SMITH ENGINEERING VERTICAL PLATE BENDING MACHINE HORIZONTAL ROLLING MACHINE Hugh Smith Engineering A Division of Qualter Hall Co Ltd Maritime House Woodville Street Glasgow Scotland UK Tel No Fax No

HUGH SMITH ENGINEERING A Division of Qualter Hall Co Ltd VERTICAL PLATE BENDER HORIZONTAL ROLLING MACHINE Introduction to the Vertical Plate Bending Machine The machine operates by a progressive bending method, the plate is fed through a small increment and by means of a reciprocating beam the plate is given a set or bend, and then the plate is fed through for another bend. Once the bending force is applied on the plates, it is not simultaneously being rolled and fed through the machine, therefore a high driving power is not required. This is particularly true of heavy plates where exceptionally high loading or bending effort is required to bend to small diameters in minimum time. It is a characteristic feature of pyramid or pinch rolls that the operation is slowed down considerably when near maximum capacity is being rolled. The greatest loading requirement for bending complete circles is when presetting the extreme ends of the plate. Theoretically it is impossible to bend right to the end, but in practice a very small end flat is left on the plate if adequate hydraulic power can be brought to bear as close to the end of the plate as possible. Due to the use of direct-acting hydraulic rams, the Hugh Smith Vertical Bending Machine has exceptional capacity and is in fact superior to pinch-type rolls. It should be noted that for accurate work on heavy plates, the extreme end should be given an overset. With this, the out of round is a very small percentage of the diameter and meets international codes relating to pressure vessel manufacture.

HUGH SMITH ENGINEERING A Division of Qualter Hall Co Ltd Vertical Plate Bending Machines Horizontal Rolling Machines When the plate is entered into the machine, it is positively held in a safe condition, and no further cases are required until the plate is complete. The lower edge is supported by roller skates running on an accurate floor, which maintains alignment of the plate at all times. Plate thickness variations do not cause the plate to spiral during forming. The weight of the plate has little or no effect on the bending accuracy. Due to the bending nature of the process, it is possible to obtain a true measurement of the radius of curvature after each bend. Operators find this a great advantage. When setting the edges of the plates, the operator can easily see exactly the results of each bend stroke and finely adjust the press stroke to obtain a very accurate shape. Since the plate is supported from the floor, it is safe, and the operator can bend right up to the end of the plate, thus minimizing end flat. By varying the bending bar widths, it is possible, over a large range, to ensure that the bending force used is compatible with the camber compensation on the bending roller, thus ensuring accurate parallel bending.

HUGH SMITH ENGINEERING A Division of Qualter Hall Co Ltd Vertical Plate Bending Machines Horizontal Rolling Machines Accuracy. All the above points result in a very high degree of accuracy in straightness, squareness, and circularity being achieved. It is well known that plates vary in thickness over their length and width, and the strength of the material can vary in different parts of the same plate. Because the Vertical Bender is a press/bend machine, it is simple to ensure that the bend curvature is maintained even where thickness and strength of material variation occur. The Vertical Bender will meet the circularity and straightness of all known fabrication specifications and pressure vessel codes. The Vertical Bender does not have a heavy pinch roll acting on the plate, so the amount of plate stretch when bending is always predictable, and the plate can be cut to the correct length before bending. In the vertical machine, the mill scale on the plate falls to the floor away from the plate and is not pressed into the surface. This is a particular advantage in hot bending. The vertical machine is particularly suitable for carrying out rectification work, either straightening a plate or in the area of the longitudinal weld. It is easy to correct for hard spots in plates by locally pressing further. The vertical machine has the power to form the plate in one pass, leading to fast floor-to-floor times. The vertical bending machine, due to its design and conception, is easy and economical to maintain.

HUGH SMITH ENGINEERING A Division of Qualter Hall Co Ltd Vertical Plate Bending Machines Horizontal Rolling Machines It is possible to produce plates with varying curvature, such as those required for oval cross-section tubular components. The design of the Vertical Bender is such that the bending can be a smaller diameter for the same load capacity as horizontal rolls. This gives the machine the ability to form smaller diameter cylinders than an equivalent horizontal rolling machine. Vertical Plate Bender with Auxiliary Rollers Stored Vertically In our. VERTIGAE Max Plate Thickness Plate Dia. 2m Plate Width 4m TONNE x 4 METRE MACHINE IN USE AT A BOILER PLANT IN JAPAN