★ the concept of stamping molds
Stamping mold, also known as die, metal mold, metal stamping mold, meaning almost the same. Refers to the use of fixed in the punch or pressure press mold to the metal or non-metallic sheet to apply a certain amount of pressure, so that the material is separated or molded, so as to obtain a certain size requirements, appearance quality of the parts of the pressure processing method. Mold is divided into many kinds, I here is mainly for my familiar metal stamping mold.
Introduction to the structure of ★ stamping molds
Stamping mold structure, mold structure, mold structure is much the same, according to different product characteristics and requirements to design the corresponding mold, different mold structure, its function is also different, the production of products are also different, in general there is simple, complex. But no matter how complex the structure is, its basic structure is constant, nothing but several templates, blocks, and standard pieces.
Molds are typically assembled from several templates and parts (which we call in-blocks, or inlets) and standard parts.
General stamping mold structure, specific templates from top to bottom (including code numbers) are:
The templates for the upper model are:
Upper support plate, upper foot, upper mold seat (UPU), upper pad (UBU), upper splint (PHU) stop (PPS), depress plate (PSU);
The templates for the mold are:
Under template (DIE), lower pad (LBD), lower mold seat (LPD), lower pad foot, lower pad;
Other templates that are not commonly used for comparison:
Upper cover plate (CVU), hit out of the plate, upper template, lower strip plate, lower stop plate, lower splint, male mold, mother mold, etc.
Some mold parts are:
The upper mold of the input, into the block: splint into the block, strip plate into the block, punch, etc.
The entry of the mold, the entry block: the mold into the block, the mold, etc.
Standard parts: spring, hexagonal screws, stop-pay screws, reeds, contours, contours, contours, guide columns, guide sets, such as high gaskets, dual-use pins, top pins, etc.
Non-standard parts: external positioning, internal positioning, pitch positioning, outer limit column, inner limit column, etc.
★ the number of the stamping mold
Stamping mold numbers, generally written like this (for example):
Engineering module: 90-KNMF0125RAH, 90-KNMF0125RAA, 90-KNMF0125RBB
Continuous mode: 90-KNMF0125SAA, 90-KNMF0125SBB
Stamping commonly used materials and selection
1, stamping commonly used materials
The most commonly used materials in stamping production are metal materials (including ferrous and non-ferrous metals), but sometimes non-metallic materials. Among them, ferrous metal mainly has ordinary carbon structure steel, high-quality carbon structure steel, alloy structure steel, carbon tool steel, stainless steel, electrical silicon steel, non-ferrous metals are mainly pure copper, brass, bronze, aluminum, non-metallic materials have cardboard, laminate plate, rubber plate, plastic board, fiberboard and mica.
The supply status of metal materials for stamping is generally plate and strip material of various specifications. Plate material can be used for the production of engineering molds, with material (rolling material) for the production of continuous molds, can also be used for the production of engineering molds. The size of the plate is large, can be used for the stamping of large parts, can also be cut into strips of material according to the sample size for the stamping of small and medium-sized parts;
The relevant manuals and standards are available for the grades, specifications and performance of the various materials.
2, the reasonable selection of stamping materials
The selection of stamping materials should take into account the requirements of the use of stamping parts, stamping process requirements and economics.
(1) According to the use of stamping parts reasonable selection of materials
The selected material should enable the stamping to work properly in the machine or component and have a certain service life. To this end, according to the conditions of use of stamping parts, so that the selected materialto meet the corresponding strength, stiffness, toughness, corrosion resistance and heat resistance and other force requirements.
(2) According to the stamping process requirements of reasonable selection of materials
For any stamping, the selected material should be able to steadily form a qualified product that does not crack or wrinkle in accordance with the requirements of its stamping process, which is the most basic and important material selection requirement. To do this, the following methods can be used to reasonably select materials.
(1) Try punch. According to the previous production experience and possible conditions, select several basic plate materials that can meet the requirements of stamping parts for test inge, and finally choose not cracking or crease, its low scrap rate of one. The results of this method are intuitive, but with greater blindness.
(2) Analysis and comparison. On the basis of analyzing the nature of stamping deformation, the maximum deformation degree of stamping molding is compared with the degree of extreme deformation allowed by the plate stamping molding performance, and as a basis, select the plate suitable for the requirements of the stamping process of this kind of part.
In addition, the same grade or the same thickness of the plate, there is cold and hot-rolled points. In China’s domestic plate, thick plate (t.4mm) is hot-rolled plate, thin plate (t
Less surface defects, bright, dense internal organization, better stamping performance. (Note: t in the mold generally represents the thickness, such as the thickness of the template, the thickness of the material can be expressed with t.) )
(3) Reasonable selection of materials according to economic requirements
The selected materialshould be used to meet the requirements of the use of performance and stamping process, as low as possible, convenient source, good economy, in order to reduce the cost of stamping parts.
classification of ★ stamping molds
Stamping mold classification, generally we can simply divide it into two kinds, namely engineering mold and continuous mold;
Engineering molds can be divided into composite molds, stretch molds, riveting molds, etc. , the following is a brief introduction to the structure and role of these molds;
Engineering mold: also known as “single-process mold”, refers to the stamping of a stroke, can only complete one stamping process of the mold. After this project is finished, the need for manual or robot to remove the product from the mold, and then put to the next stop inside the mold to continue production, until the last process of the mold finished, the entire product is not completed. This mold repair is simple, but the production time and effort, it needs to spend more labor and time costs, product scrap rate is higher.
Composite mold: The common composite mold structure has a composite material, composite stretch, etc. , this mold structure and other engineering mold structure is slightly different. Its convex mold (also known as male mold or punch) design in the lower mold, the other several templates are the lower splint (fixed convex punch), the lower stop plate and the lower strip (out of the strip), the upper mold in turn is the mother mold (or knife, the inner strip plate and the upper pad plate composition, the inner disengage and other high sleeve hanging on the upper pad plate, and then with a rod or spring. For example, used for the compound mold, its internal removal generally out of the mother mold 0.50mm can be, can not be lower than the mother mold, otherwise the mother mold knife is easy to collapse or do not peel off. The power of internal removal should be large enough to put the product from the inside of the mother mold, generally if the material is thicker, we are loaded with nitrogen springs.
Continuous mold: also known as “grade into mold”, refers to the stamping of a trip process, in different stations at the same time to complete two or more stamping process mold, this mold repair is difficult, the need for experienced fitter master to operate, but the production efficiency is very high, playing fast one hour can produce thousands of products, save labor and time costs, product scrap rate is low.