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Cold stamping die and cutting machine mould design
by：Transon
2020-10-30
Stamping process is the main movement up and down, but in the mould design of inclined wedge structure, distributing structure, roller structure and rotary cutting structure, etc. , can be the main movement into corresponding level movement, mold the scrolling and mold in the move.
Mechanical movement can be divided into sliding, rolling and move three basic forms of motion, is present in the stamping process, but form the characteristics of various kinds of sports, the impact on the stamping also each are not identical.
It is worth mentioning that for some shell parts, such as computer floppy disk shell, because of its curved edge is longer, sliding between the elbow and sheet metal, when bending, very easy to wipe out the dander, material galvanized layer falls off, frequent polishing bending punch effect is not ideal.
For those more strict flanging, deep drawing height needs to be done trimming process, also can use the similar structural design.
。 Some number of piercing die for punching, need a large pressure and bad for stamping production, even without enough tonnage punch, there was a simple method, is 2 ~ 4 batch with different length of the punch, when they are in the stamping punch movement of points, can effectively reduce the cutting force. According to the usual method of blanking punching die design, often after stamping workpiece with waste is difficult to separate. In the mold design of the special structure is more complex and difficult problem, capital is higher also, bending machine, but in order to achieve the appearance of the product, size, can yet be regarded as an effective solution.
cold stamping is to all kinds of different specifications sheet or billet, use of mold and stamping equipment ( Press, also known as punch) Exert pressure, deformation or separation, to obtain a certain shape, size and function of the parts. Generally produces are using vertical punch, thus determines the stamping process is the main movement up and down, in addition, there are in the mold and sheet metal and mold structure between the various mutual movement. Bending die cutter mold bending process is the basic movement of stripper plate first contact with the sheet metal and killed, punch descend to contact with the sheet metal, and inherit down into the concave die, convex and concave mold and sheet metal to produce relative movement, cause the deformation of sheet metal bending, then separate convex and concave die, bending die on the plunger ( Or the slider) Finish the bending side, bending motion. For those who are in the curved surface has high position accuracy of holes ( For example, the two holes on the side bending concentricity, etc. ) Stamping parts, if the first punching and bending is difficult to meet the requirements of hole location, required inclined wedge structure design, after bending and punching, using the horizontal punch movement can achieve a goal. Common practice is to put the titanium coating on the bending punch, advances the roughness and wear resistance; Or embedded in the bending Angle of the punch R rollers, the elbow and sheet metal bending slide into move, because move than sliding friction is much smaller, so it is not easily scratch artifacts. After some workpieces bending shape is singular, or bending can not become detached from the concave die in the normal way, at this time, often need to use inclined wedge structure or distributing structure, for example, USES the oblique wedge structure, can be finished or back to hook type bending is less than 90 degrees, by distributing structure can realize the cylinder forming at a time. For bending parts accuracy is higher, should pay special attention to, to bend, to have a sports dead point, that is, all related structures can touch the death. The movement of the stripper plate and ejector length often hub, in order to guarantee the quality of bending or produce efficiency, need to control the movement of the stripper plate, make it before the punch and the sheet metal contact, and the force that press a material must be enough, or bending parts size accuracy is poor, poor flatness. Secondly, should ensure that the top bar force, enough to make it successfully launched the bending parts, otherwise the bending deformation, low production efficiency. Since stamping process exists as a variety of sports, in stamping die design should be to strict control of all kinds of sports, in order to achieve the mold design requirements; At the same time, also shall, according to the details in design, flexible use of various mechanical movement, in order to achieve the requirements of the product. For some local outstanding large stamping parts, can be in stripper plate blanking punching die of the concave die on increasing pressure type punch, exert enough spring force at the same time, to ensure the unloading board pressed punch when in contact with the sheet metal to deform the material first to achieve molding, to inherit the blanking punch movement, often can reduce step of a mould, reduce the capital. Under the condition of not affect the quality of the workpiece, can be used on the intensive unloading board to add some convex set blocks, so that, after the completion of blanking punch movement die stripper plate first launched the artifacts from the concave die, intensive unloading board then push the wastes from intensive also falls, as a result, workpiece is separated from waste is natural. Blanking die blanking process is the basic movement of stripper plate first contact with the sheet metal and pressed firmly, bending machine punch down to decline and to enter into contact with sheet metal die, convex and concave mold and sheet metal to produce relative movement led to the sheet metal separation, then separate, convex and concave die stripper plate left on the workpiece or waste from the punch, cutting movement. Hub of the length of the stripper plate movement often, in order to guarantee the quality of blanking, must control the movement of the stripper plate, be sure to make it before the punch and the sheet metal contact, and the force that press a material should be enough, blanking pieces or block surface quality is poor, low dimensional precision, bad flatness, even die life.
welding equipment all need what object
。 Some number of piercing die for punching, need a large pressure and bad for stamping production, even without enough tonnage punch, there was a simple method, is 2 ~ 4 batch with different length of the punch, when they are in the stamping punch movement of points, can effectively reduce the cutting force. According to the usual method of blanking punching die design, often after stamping workpiece with waste is difficult to separate. In the mold design of the special structure is more complex and difficult problem, capital is higher also, bending machine, but in order to achieve the appearance of the product, size, can yet be regarded as an effective solution.
cold stamping is to all kinds of different specifications sheet or billet, use of mold and stamping equipment ( Press, also known as punch) Exert pressure, deformation or separation, to obtain a certain shape, size and function of the parts. Generally produces are using vertical punch, thus determines the stamping process is the main movement up and down, in addition, there are in the mold and sheet metal and mold structure between the various mutual movement. Bending die cutter mold bending process is the basic movement of stripper plate first contact with the sheet metal and killed, punch descend to contact with the sheet metal, and inherit down into the concave die, convex and concave mold and sheet metal to produce relative movement, cause the deformation of sheet metal bending, then separate convex and concave die, bending die on the plunger ( Or the slider) Finish the bending side, bending motion. For those who are in the curved surface has high position accuracy of holes ( For example, the two holes on the side bending concentricity, etc. ) Stamping parts, if the first punching and bending is difficult to meet the requirements of hole location, required inclined wedge structure design, after bending and punching, using the horizontal punch movement can achieve a goal. Common practice is to put the titanium coating on the bending punch, advances the roughness and wear resistance; Or embedded in the bending Angle of the punch R rollers, the elbow and sheet metal bending slide into move, because move than sliding friction is much smaller, so it is not easily scratch artifacts. After some workpieces bending shape is singular, or bending can not become detached from the concave die in the normal way, at this time, often need to use inclined wedge structure or distributing structure, for example, USES the oblique wedge structure, can be finished or back to hook type bending is less than 90 degrees, by distributing structure can realize the cylinder forming at a time. For bending parts accuracy is higher, should pay special attention to, to bend, to have a sports dead point, that is, all related structures can touch the death. The movement of the stripper plate and ejector length often hub, in order to guarantee the quality of bending or produce efficiency, need to control the movement of the stripper plate, make it before the punch and the sheet metal contact, and the force that press a material must be enough, or bending parts size accuracy is poor, poor flatness. Secondly, should ensure that the top bar force, enough to make it successfully launched the bending parts, otherwise the bending deformation, low production efficiency. Since stamping process exists as a variety of sports, in stamping die design should be to strict control of all kinds of sports, in order to achieve the mold design requirements; At the same time, also shall, according to the details in design, flexible use of various mechanical movement, in order to achieve the requirements of the product. For some local outstanding large stamping parts, can be in stripper plate blanking punching die of the concave die on increasing pressure type punch, exert enough spring force at the same time, to ensure the unloading board pressed punch when in contact with the sheet metal to deform the material first to achieve molding, to inherit the blanking punch movement, often can reduce step of a mould, reduce the capital. Under the condition of not affect the quality of the workpiece, can be used on the intensive unloading board to add some convex set blocks, so that, after the completion of blanking punch movement die stripper plate first launched the artifacts from the concave die, intensive unloading board then push the wastes from intensive also falls, as a result, workpiece is separated from waste is natural. Blanking die blanking process is the basic movement of stripper plate first contact with the sheet metal and pressed firmly, bending machine punch down to decline and to enter into contact with sheet metal die, convex and concave mold and sheet metal to produce relative movement led to the sheet metal separation, then separate, convex and concave die stripper plate left on the workpiece or waste from the punch, cutting movement. Hub of the length of the stripper plate movement often, in order to guarantee the quality of blanking, must control the movement of the stripper plate, be sure to make it before the punch and the sheet metal contact, and the force that press a material should be enough, blanking pieces or block surface quality is poor, low dimensional precision, bad flatness, even die life.
welding equipment all need what object
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