Roll Forming & Bending Machines #2704115

Undercrank Mechanical Motorised Shearing Machine.
Undercrank Mechanical Motorised Shearing Machine.
Shearing Machines have been designed and developed through structural analysis technique for continuous production, accuracy and repeatability having the following main features: Frame : Rigid steel frame of shears are optimally designed to avoid week sections at load support and is of interlocked design.The ram is guided throughout its length by accurate machined guideways ensuring proper clearance and clean cut. Hold-down system : Spring loaded mechanical Hold down pads hold the sheet securely, to avoid slipping and bowing resulting in clean square cuts. Holddown units are provided with oversize pads to avoid impressions on sheet metal on request. Hold-down system : Hydraulic Hold down pads are accurate calm operated pump. Hydraulic Hold down pads hold the sheet securely, to avoid slipping and bowing resulting in clean square cut. Hold down units are provided with oversize pads to avoid impressions on sheet metal on request at extra cost. Knives : Shears are provided with high quality single segment (HcHcr) Knives for longer tool elite. Ease in assembling of knife reduces down-time. The knife blades are four edged. Lubrication : All bearing parts and guide surfaces are lubricated through hand-operated lubrication system. Mechanical backguage : This is standard equipment provided on all shears. Scale on backguage gives instantaneous reading of distance between shear and backguage. Thus avoiding errors and maintenance encounted in electronic equipment. Finger guard : Fitted in front of hold-down for operator protection without abstructing viewing.

Shearing Machines have been designed and developed through structural analysis technique for continuous production, accuracy and repeatability having the following main features: Frame : Rigid steel frame of shears are optimally designed to avoid week sections at load support and is of interlocked design.The ram is guided throughout its length by accurate machined guideways ensuring proper clearance and clean cut. Hold-down system : Spring loaded mechanical Hold down pads hold the sheet securely, to avoid slipping and bowing resulting in clean square cuts. Holddown units are provided with oversize pads to avoid impressions on sheet metal on request. Hold-down system : Hydraulic Hold down pads are accurate calm operated pump. Hydraulic Hold down pads hold the sheet securely, to avoid slipping and bowing resulting in clean square cut. Hold down units are provided with oversize pads to avoid impressions on sheet metal on request at extra cost. Knives : Shears are provided with high quality single segment (HcHcr) Knives for longer tool elite. Ease in assembling of knife reduces down-time. The knife blades are four edged. Lubrication : All bearing parts and guide surfaces are lubricated through hand-operated lubrication system. Mechanical backguage : This is standard equipment provided on all shears. Scale on backguage gives instantaneous reading of distance between shear and backguage. Thus avoiding errors and maintenance encounted in electronic equipment. Finger guard : Fitted in front of hold-down for operator protection without abstructing viewing.

This machine is best suited for small batch production or when cost of press tools and dies is prohibitive. It enhances quality and productivity by doing such jobs which used to be done by skilled men and hand tools. The machine has eliminated expensive trimming dies in many modern workshops. Fabricators, Control panel manufacturers, cabinet & vehicle body makers, fan & impeller industry in addition to many others find it a most valuable asset. While the capacities indicated below are for mild steel, the machine is often used for many other materials as well. DESCRIPTION : The Sheet Metal Nibbling Machine is a rugged, sturdy and reliable multipurpose machine capable of sheet cutting & forming operations. Its verstility is best expressed by terming it the Sheet Metal Workers lathe. The working principle on which nibbling operates is the sheet is cut or formed between the fast reciprocating motion of an upper tool (powered by an electric motor and driven by an ecentric crank) and a stationery lower tool, by progressive punching, as the sheet is fed. OPERATIONS : Shearingtools are available for straight cutting, figure cutting (contour cutting) and circle cutting operations. The shearing length per cut is small and there is no wastage of materials. Nibblingis a continuous punching operation with a circular tool and is used for producing internal and external cut-outs of any shape. The workpiece does not warp but the edges produced may require filing, depending on the end use. The fixed nibbling tool is a. solid punch cutting at one side. The punch and die clearance is provided to suit the sheet thickness and the feed is controlled by the tool design. This tool, when used with the rotary nibbling attachment, enables nibbling in any direction without turning the sheet. Rectangular notchingis a continuous punching operation with a square punch and die. It is used mainly for producing internal rectangular cutouts. The tool cuts in the two directions and the edges produced are clean. Universal nibblingtool consists of a round or square hollow nibbling punch, a guide pin and die. The nibbling punch cuts on all sides and with copying complates it becomes a quick and economical way to produce parts or cutouts of any shape or size. The guide pin controls the feed rate. Slot cuttingis a done with a double-edged cutting tool which avoids warping of sheets. Suitable for parting of sheets, cutting small strips and slots. The upper tool has to be changed for each slot width while the bottom tool is adjustable. Louver cuttingis a combined shearing and forming operations. The sheet is first cut and then the louver is formed with the forming part of the tool. The length of louvers produced is independent of the length of the tool. This operation as well as beading, folding and flanging are completed in 2 to 3 passes. After every pass the tool is fed further towards the sheet. Beadingis a forming operation used for the stiffening of sheets. Foldingis also a forming operation and by double folding, channels may be made for housing of electrical writing etc. Flangingis forming operation very commonly used on sheet metal parts. 0 to 90 flanging is possible by changing the lower tool only. 2-3 passes are generally required and intermediate annealing may be necessary in some cases to get the correct angle of flange. Like all other forming operations, the circle guiding attachment for straight feeding attachment is necessary for producing circular or straight flanges. However, a separate tool which uses the edge of the workpiece for guidance is available for free hand flanging of any shape. Dishing or peeningis a mechanical hammering operation used for forming dished parts like tank bottoms. The quality of dishes formed depends on the skill of the operator. Large hole punchingis possible with special punch and die sets. Round or square holes such as needed for fixing lamps or push buttons etc. on panels are produced on these low tonnage machines by providing a shear on the punch. Inner circle cuttingAvailable for circles from 100 mm dia meter up to a maximum circle dia meter-the size being 80% of throat depth of the corresponding model chosen. Pre-hole in the centre is necessary for sheet thickness above 2 mm Accessories : Complete electricals, a set of straight cutting tools with the holders, necessary keys, spanners for the operation of machine, feeler gauge & operation manual form the std. accessories supplied with the machine. Various attachments for straight sheet feeding, circle guiding, louvre cutting, rotary nibbling copy & coordinate table with scales & ball tops antivibration pads etc. are available. Tools : Straight, figure and circle cutting tools, Flanging tools, beading tools, flouring tools etc. are available at extra cost. STANDARD ACCESSORIES : Tow Slides for attachment mounting. Set of tool holders with figure cutting bits. Electric motor. Push button starter provided with over load trip Set of operating keys. Set of operating spanners. OPTIONAL ACCESSORIES : Anti vibration pads. Hand pushed straight feeding attachment. Circle cutting attachment. Nibbling tool. Louver cutting tool. Beading tool. Rectangular notching tool. Flanging tool. Slot cutting tool. Punching tool.

Treadle guillotine shearing machines are indispensable in sheet metal industries as they lead amongst all on account of versatile design, rigid construction, rigorous tests for the capacities and appearance. They are specially designed for rapid and continuous cutting of steel sheets of varied widths and trimming them in unlimited lengths. Available in cast iron body or in all steel construction. Features : High tesile springs for quick return of treadle. 4 Cutting edged hardened and ground quality blades. Rigid and streamlined construction. Spring loaded sheet holding device. Tradle guillotine shearing machines are designed to cut sheets of ferrous and non-ferrous metals of the following capacities. Inches S.W.G. Mild steel, 26 tons tensile 0.048 18 Stainless steel annealed, 50 tons tensile 0.022 24 Brass, hard, 36 tons tensile 0.032 21 Brass, half hard, 30 tons tensile 0.040 19 Copper, hard 20 tons tensile 0.064 16 Copper, soft annealed 16 tons tensile 0.072 15 Aluminium, half hard, 16 tons tensile 0.072 15 Aluminium, copper alloy 40 tons tensile 0.028 22 Duraluminium, 28 tons tensile 0.040 19 In every machine, the bed and top beam have full adjustments for correct setting and easy removal of blades for accurate cutting and for regrinding. The spring loaded pressure pad holds the sheets firmly while shearing thereby giving the perfect parallelism of cutting on either side. The adjustable front and back gauges with running Tee slots facilitate adjustment of various widths of the cuts and avoid any kind of twistings, turning of sheets while cutting. Square guide on the side of the table facilitates square cuts. The cutting edge blades avoid frequent grinding and adjustment and also very easy to grind to the rectangular shape and are manufactured in collaboration with very good German firm. Highly compared English springs balance the treadle to correct level. The top beam guides are adjustable for compensating wear and tear as also setting of the upper blade. These blades can be used with slight change in cutting angle to ribs, plastics, card board, rubber, mica etc., without any sign of squeezing or crushing.