Stamping

How To Operate Safely During The Stamping Process? Stamping operation flow(l) Feeding:The operation of feeding the sheet into the mold is called feeding.        The feeding operation is carried out before the slider is about to enter the danger zone, and the operator's hand is not operated in the mold, which is safe; however, the hand-held plate is put into the mold due to the mold design problem, which is a great danger.Note: Do not put your hand into the mold(2) Ordering:The operation of fixing the plate on the positioning of the mold is called setting       After the operation, after the feeding, it is at the moment when the slider is about to slide, due toThe convenience of the material directly affects the safety of the operation, and the difficulty of settingLarge, it will lengthen the dangerous time.The positioning methods mainly include: positioning of the pin, positioning plate, guide plate positioning, guidingPin positioning, fixed side blade several ways.Note: The positioning pin and plate should have a certain height to prevent the machine from failing.(3) Pickup:Refers to the operation of taking out the punched workpiece from the mold The pickup is completed during the slider return trip. Pay attention to the operation:Manual pick-up is strictly prohibited.Prevent stamping and punching failures.Prevent false alarms.Pick-up methods include: lower leakage, elastic discharge,Shot-feeding, manual pick-up (requires the use of a safe hand).(4) Scrap removal: Refers to the removal of stamping waste in the mold.         Waste is inevitable in the separation process. If it cannot be cleaned up in time during the operation, it will affect the normal operation of the job and will scrap the workpiece.Note: Please clean the mold directly by hand in the mold.Must disconnect the power or emergency stop(5) Manipulating equipment: Refers to the way the operator controls the action of the stamping equipment. There are two common ways of manipulating:1. Push button switch. When a single button is operated by a single person, it is generally not dangerous.   risk. However, when many people operate, they may be injured due to poor care or improper cooperation.   Harmful accidents.2. Foot switch. Although easy to operate, it is easy to cause misalignment between hands and feet.   An error occurred. Causing an accident.(6) Material transfer:Refers to the whole process of transferring the processed workpiece from the workshop              During the workpiece transfer process, the workpiece often leaves sharp edges and burrs in the stamping, which poses a great danger to the handling. Such as scratches, cuts, and stab wounds are accidents that often occur in the operation of holding parts, which can cause blood to bleed.Note: Personal protective equipment is a must wear item.

What Are Common Materials For Stamping? Common materials for stampingThe most commonly used materials for stamping are metal sheets, sometimes non-metallic sheets, and metal sheets are classified into ferrous and non-ferrous metals. Black metal sheets can be classified according to their nature:1) Ordinary carbon steel plate such as Q195, Q235, etc.2) High-quality carbon structural steel plates The chemical composition and mechanical properties of these steel plates are guaranteed. Among them, carbon steel is used more in low carbon steel. The commonly used grades are: 08, 08F, 10, 20, etc. The stamping performance and welding performance are good, and it is used to manufacture stamping parts with little force.3) Low-alloy structural steel plates commonly used such as Q345 (16Mn), Q295 (09Mn2). Used to manufacture important stampings with strength requirements.4) Electrical silicon steel plate such as DT1, DT2.5) Stainless steel plates such as 1Cr18Ni9Ti, 1Cr13, etc., are used to manufacture parts with anti-corrosion and anti-rust requirements.6) Commonly used non-ferrous metals are copper and copper alloys (such as brass), and the grades are T1, T2, H62, H68, etc., and their plasticity, electrical conductivity and thermal conductivity are very good.7) There are also aluminum and aluminum alloys. The commonly used grades are L2, L3, LF21, LY12, etc., which have good plasticity, and the deformation resistance is small and light.

What Are The Stamping Performance Requirements For Metal Materials? Stamping performance requirements for metal materials(1) Has good mechanical properties and large deformation resistance             The mechanical properties of metallic materials refer to tensile strength, yield strength, elongation, hardness, plasticity, strain ratio, and the like.(2) has an ideal metallographic structure            Metallographic structure is the microscopic quality characteristic of the material. Its main sign is: the degree of spheroidization of cementite or carbide.The requirements for stamping materials are:1 thickness is accurate and uniform. The stamping die is precise, the gap is small, the thickness of the sheet is too large to increase the deformation force, and the jam is caused, and even the die is cracked; if the sheet is too thin, the quality of the finished product is affected, and even the crack occurs even when the drawing is deep.2 The surface is smooth, no spots, no flaws, no scratches, no surface cracks, etc. All surface defects will remain on the surface of the finished workpiece, and the crack defects may be deepened and expanded in the process of bending, deep drawing, forming, etc., resulting in waste.

What Are The Basics Of Mechanical Press Machine? Mechanical press basicsStamping machine press is the most important and most common in the four major processes of automobile manufacturing.One of the commonly used devices. It mainly relies on the pressing energy of the press to work on the die.The steel plate in the middle is shaped to become the casing of the automobile body.Basic components of the pressThe power energy system includes an electric motor and a flywheel. The electric motor provides a power source and the flywheel acts to store and release energy.The drive train transfers the motion and energy of the motor to the working mechanism. It consists of a belt drive and a gear drive.Working mechanism The working actuator of the press. Generally, it is a crank slider mechanism composed of a crankshaft, a connecting rod, a slider and the like.Support parts such as the body. Connect and secure components to ensure their relative position and motion. The body must withstand all the craftsmanship when working.Operation and control system mainly includes clutches, brakes, electronic and electrical detection and control devices.Auxiliary systems and accessories include pneumatic systems, hydraulics, lubrication systems, air cushions, and quick die changers.Press driveThe main drive system of the press is placed inside the beam:1. The first-class transmission is the “M” type multi-strap belt drive.The main motor transmits energy to the flywheel through multiple zones2. The secondary transmission is a herringbone gear transmissionFlywheel rotation transfers energy to the high speed shaft and then to the herringbone gear3. Three-stage transmission is herringbone or spur gear transmissionThe herringbone gear is transmitted to the straight or herringbone teeth, so that the eccentric wheel is transmitted to the slipper through the connecting rodBlock reciprocatingMain parameters of the pressThe technical parameters of the press reflect the process capability, application range and life of the press.Indicators such as yield are the main basis for the correct selection of presses.  1. Nominal pressure and nominal pressure stroke:    The maximum allowable punching capacity of the press that can be fully absorbed by the structure; that is,The maximum allowable action of the slider when the slider is at a certain distance from the bottom dead centerforce. This specific distance is called the nominal pressure stroke.2, slider stroke      The distance the slider passes from top dead center to bottom dead center. Its size varies with process use and nominal pressure.3, the number of slider strokes     The number of slider strokes means that the slider goes from top dead center to bottom dead point every minute, and then backThe number of times to go to the top dead center. The unit is: spm, the number of strokes per minute.Clutch   The press clutch and brake are used to move or stop the press crank linkage when the motor and the flywheel are continuously rotating. Therefore, the clutches and brakes are transmission components that are indispensable for the normal operation of the press, and the two must work closely and cooperatively.SliderThe mold upper mold is fixed on the slider. During the stamping stroke, the slider moves smoothly up and down.There is an upper air cushion in the slider of some presses.There are also mold clamping devices in the slider of some presses.Some presses also have a quick clamping of the upper die.There is a hydraulic protection device inside the slider. Hydraulic protection is an important protection device for the equipment. The hydraulic protection device consists of a hydraulic pad, a fuel tank, a pipeline, a pressure regulating valve, and a pressure gauge.The guide rail is in contact between the slider and the column, and the contact surface is cooled and lubricated by lubricating oil. There is an oil tank on the column below each rail, and the oil tank is returned to the main tank.There is a balancer between the slider and the beam and the column.It can prevent the slider from falling rapidly due to its own weight when the slider moves downward, causing the gear in the transmission system to be subjected to the force in the reverse direction to cause impact and noise;The gap between the connecting rod and the slider can be eliminated, and the impact and wear of the stressed parts can be reduced;The power consumption of the mold height adjusting mechanism can be reduced;It can prevent accidents caused by the falling of the slider when the brake is broken or the connecting rod is broken.WorkbenchThe lower die of the mold is fixed on the workbench. The press table can be moved for easy and quick mold change.In order to ensure the accuracy of the stamping part, the parallelism of the work surface and the lower plane of the slider is required to be high.The table has a clamping device fixed to the base of the press.electricMost of the electric cabinets of the press are placed on the platform of the electric cabinet. The electrical cabinet is the core part of the press control, and the operator does not allow any components in the power cabinet. But the panel of the electric cabinet must be kept clean.

How To Ensure The Quality Of Cold Punching Production? Measures to ensure the quality of cold-punching productionIn cold stamping production, there are many factors that cause quality problems, such as failure of stamping equipment or improper maintenance, problems with die installation and adjustment, violation of operating procedures, poor quality of raw materials, and improper process arrangement, which may cause quality problems and even cause waste. In order to prevent the quality of stamping production, the following measures should be taken:1) The raw materials must conform to the technical requirements stipulated by the parts. For parts with relatively high blank size and surface quality, inspection should be carried out. The substitute materials must be approved by the product department or the use department, and must not be claimed.2) All the links specified in the technical regulations must be strictly observed. It is not allowed to arbitrarily change the sequence of operations and omit some auxiliary processes to strictly enforce the process discipline;3) All process equipment should be guaranteed to work in a normal and normal state. In particular, the wear and installation of the die should be observed frequently. A timely repair and maintenance system should be established according to the production batch size and production experience.4) Strict inspection system should be established in production. Generally, there are three aspects: self-inspection, mutual inspection and special inspection.5) Adhere to the implementation of civilized production systems, such as the transfer of workpieces and blanks, should have suitable station equipment to avoid pressing against the surface of the parts, thus ensuring the surface quality of the parts and maintaining the required manufacturing precision. In addition, the interior of the mold should always be kept clean during the stamping process.In short, quality problems often occur in stamping production, and the principle of prevention should be strictly followed. In order to ensure the quality of cold stamping production, it can be summarized as follows: the structure of the workpiece is reasonable, the material properties, size and shape are qualified; the mold design is reasonable; the manufacturing is excellent, the process design is reasonable and the parameters are suitable; the press equipment is intact and the operation is reasonable.

What Are Common Defects In Metal Stamping Parts? Common defects in stamping parts1, Cracking2. deformation3. Wrinkle4. Stacking5. Pulling hair6. Pit package7. Double ridgeline

How To Choose The Suitable Press Machine? press selection method:   1 The nominal pressure of the press    2 press table    3 Counter top arranging of the press    4 Type of press (closed / open)    5 The slider stroke of the press, the maximum mold height and the mold height adjustment. (Which should consider whether the press itself has a backing plate, a four-punch 630T press, the maximum mold height is 850mm, the thickness of the pad is 100mm, and the actual maximum mold height is only 750mm)

What Is Stamping Process? Stamping process introduction1. Cold stamping: refers to a pressure processing method that obtains the required parts by applying pressure to the material at a normal temperature by using a die mounted on the press to cause separation or plastic deformation.2. Features of cold stamping:        Stable product size, high precision, light weight, good rigidity, good interchangeability, high efficiency, low consumption, easy operation, easy automationCold stamping is generally divided into two categories: separation process and forming process1. The separation process is to form a stamping of a certain shape, size and cut surface quality by separating the sheets according to a certain contour line.2. The forming process is a stamping in which the blank is plastically deformed without breaking, thereby obtaining a certain shape and size.Process supplementThe process supplement section should consider the following three requirements:1. Delayed feed conditions2. The shape and position of the binder surface.3. The position of the trimming line and the way of trimming.There are two types of binder surfaces:1. It consists of the flange surface of the workpiece itself;2. It consists of a supplement to the process;Formulate the basic principles of the binder surface:1. In order to reduce the depth of drawing, the pressing surface can be designed into a certain curved shape to bend the blank into a certain shape before drawing. However, the shape of the pressing surface should be as simple and smooth as possible to prevent the blank from wrinkling during the pressing process, and to facilitate the flow of the material into the concave mold during the drawing.2. Between the shape of the pressing surface and the shape of the punch, a certain geometric relationship should be maintained - to ensure that the blank is in tension during the drawing process, and can smoothly and gradually adhere to the punch to prevent wrinkles. To this end, the following relationship must be satisfied: the length of the binder surface The difference between drawing and forming1. When the forming depth of the part is greater than 10MM, it is better to use the drawing method to avoid the phenomenon of extrusion.For less than 10, it can be considered to be used for molding. At the same time, in order to avoid stacking, the process gap is usually added.2. Drawing generally requires a complete process replenishment surface and a binder surface, and is a closed geometry.But molding can only be made locally, not all closed3. The same material grade of the same part, the product obtained by drawing or forming process, the former in terms of rigidityStronger than the latter.4. Parts are close to closed parts, preferably drawn, and open can be molded.Reasons for adding blanking processA. When the difference between the widths of different parts of the same part is more than 30%, consider adding the blanking die, otherwise it will be difficult to form.B, improve material utilizationC. The sheet before molding has a large area without forming part of the formed part.The difference between unwinding and blankingA. The parts of the product are large, and the manual operation of the parts with high labor intensity is as close as possible.material.B. Compared with the ordinary blanking die, the parts that can improve the material utilization rate are unrolled.Blanking.C. The width of the coil required for the blank is too small or too wide to be used for unwinding and blanking.A common blanking mode is required.D, parts routing planning parts produced on the automation line, the best blanking dieUse unwinding and blanking.