Description of the sheet metal process

Sheet metal has not yet had a relatively complete definition. According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including shearing, punching / Cutting / compounding, folding, welding, riveting, splicing, forming (such as car body). Its remarkable feature is the same thickness of the same part. Sheet metal processing is called sheet metal processing. Specifically, for example, the use of sheet metal to make chimneys, iron drums, oil tanks, air ducts, elbow heads, Tianyuan places, funnels, etc. The main processes are shearing, bending, bending, bending, welding, riveting, etc. Certain geometric knowledge. Sheet metal parts are thin-plate hardware, that is, parts that can be processed by means of stamping, bending, stretching, etc. A general definition is - parts with constant thickness during processing. Corresponding to the castings, forgings, machined parts, etc., for example, the outer iron shell of the car is a sheet metal piece, some of the stainless steel cabinets are also sheet metal parts. 1. It is a processing method for car repair, also called cold work. To be straightforward, if the appearance of the car body is damaged and deformed, the process of sheet metal is required to restore the original appearance. The basic tool used is the hammer. Hammers of different shapes, with iron blocks behind the pieces, repeatedly tapped to make them shape. Appearance repairers are also needed when necessary. This thing actually belongs to welding. Weld the iron ring on the body and pull it out with a hook. Used to repair the recessed parts. A large flat body is generally difficult to get back, so sometimes it is used to close the fire. It is localized heating and cooling to shrink the iron sheet. The ultimate goal is to restore the damaged body to its original appearance. 2. Sheet metal: 钣, that is, the meaning of the board, the thin plate, is the series of processing of thin metal sheets, including folding, shearing, punching, welding, riveting, splicing, etc. 3. This is a design module, mainly For things made with iron-like materials. Unlike the entity, the thickness of the entity changes, but the sheet metal is basically the same thickness. There are many products made of sheet metal in life. Sheet metal equipment is generally used in basic equipment. Shear Machine, CNCPunching Machine/Laser, Plasma, Waterjet Cutting Machine/CombinationMachine, Bending Machine and Various Auxiliary Equipment such as: unwinder, leveling machine, deburring machine, spot welding machine, etc. Sheet Metal Processes Generally, the three most important steps in a sheet metal factory are shearing, punching, cutting, and folding. Modern sheet metal processes include: filament power windings, laser cutting, heavy machining, metal bonding, metal drawing, plasma cutting, precision welding, roll forming, sheet metal bending, die forging, water jet cutting, precision welding, etc. . In the current 3D software, SolidWorks, UG, Pro/E, SolidEdge, TopSolid, etc. all have sheet metal parts, mainly through the editing of 3D graphics to obtain the data required for the processing of sheet metal parts (such as unfolding, bending) Lines, etc.) and provide data for CNC punching machines/lasers, plasma, water jet cutting machines (Laser, Plasma, Waterjet Cutting Machine)/Combination Machines (CNC Bending Machine) and CNC Bending Machines. Sheet metal quality inspection sheet metal quality is strictly required in the production process, it is necessary to independently test the quality of the quality, first, strictly control the size according to the drawings, second, strictly check the appearance quality, rework or scrap the size inconsistent Treatment, the appearance is not allowed to touch scratches, color difference, corrosion resistance, adhesion, etc. after spraying are tested. This can find unfolding map errors, bad habits in the process, errors in the process, such as number programming errors, mold errors, and so on. Sheet Metal Craft Code 1. Scope 1.1 This Code applies to the shearing of material blanks on the straight edge of various ferrous metals and other similar blanking. 1.2 The material to be sheared has a basic thickness of 0.5 to 6 mm and a maximum width of 2,500 mm. 2. Materials 2.1 Materials should meet the technical requirements. 2.2 The material is cold-rolled steel plate, which does not allow severe scratches, slips, impurities and rust on the surface. 3. Equipment and process equipment and tools. 3.1 Board, pliers, oil can, screwdriver, hand hammer. 3.2 Vernier caliper, outer diameter micrometer, steel ruler, steel tape measure, square ruler, stylus. 4. Process Preparation 4.1 Familiar with the drawings and related process requirements, fully understand the geometry and dimensional requirements of the parts being machined. 4.2 Pick materials according to the required material specifications of the drawings and check whether the materials meet the requirements of the process. 4.3 In order to reduce consumption and improve material utilization, it is necessary to calculate the method of arbitrage. 4.4 Place qualified materials neatly on the side of the machine. 4.5 Fill the oil holes of the shearing machine. 4.6 Check that the shearing blade is sharp and secure, and adjust the blade clearance according to the thickness of the sheet.