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### ** Pressing parts expand map production skills and precautions full solution **
#### Foreword
The production of stamping parts plays a vital role in modern manufacturing, and the precision of the stamping parts expand the map directly affects the quality and production efficiency of the product.As a practitioner or enthusiast, it is important to understand how to make high -quality stamping parts.This article will take you in -depth understanding of the production techniques of rushing components, and analyze the key precautions to help you take less detours in practice and improve work efficiency.
#### ** 1. The basic concept of the stamping parts expands the map **
Before the formal discussion of production skills and precautions, we first need to clarify what the stamping part is expanded.To put it simply, the expansion of the stamping parts ** is the process of "unfolding" its three -dimensional shape into a flat drawing before the stamping part is processing.This expansion is the most basic basis for subsequent mold design, material preparation and stamping processing.
#### ** 2. The production skills of the stamping parts expand the picture **
1. ** Accurate measurement and modeling **
The first step of making the expansion diagram is the three -dimensional model of hedging parts for accurate measurement **.The size of the measurement of workpieces such as the use of suitable tools such as deck and three -coordinate measuring machine is the basis for the accurate expansion of the graph.At the same time, the three -dimensional model of the use of ** 3D modeling software ** (such as solidworks, Catia, etc.) is also critical to ensure that each detail and curved surface can be accurately displayed.
2. ** Material characteristics and thickness **
During the production process of the expansion diagram, the thickness of the material ** and the physical characteristics of the material will directly affect the results of the expansion.Metal materials usually have a certain ** ductility **. During the stamping molding process, the material stretching and compression on the inner and outer side are different, which requires appropriate compensation in the expansion diagram.The concept of neutral layer ** is also very important. It is usually located in the middle position of the thickness of the material. The length of the expansion should be calculated according to the neutral layer, not the surface of the inside and outside.
** Case analysis **: For example, for the 0.8mm thick cold -rolled steel plate punching parts, the expansion map needs to consider its ductility. When calculating the length of the calculation, according to the formula L = (A + B + π*(R + K*t)) Compensation, where A and B are straight segments, r is the inner radius of bending, K is a neutral layer coefficient, and T is the material thickness.
3. ** Bend and angle processing **
The curved part is a more complicated link in the expansion of the stamping part, especially in complex multi -angle stamping parts.** Expand angle ** usually does not mean the actual curve angle. You need to consider the ** rebound ** effect.Generally, the software will give the rebound compensation value according to the nature and mold settings.
4. ** CAD Expand Tips **
The three -dimensional model should be expanded into a two -dimensional plan, and the use of professional ** CAD software ** (such as AutoCAD) is the choice of most engineers.During the expansion process, we must follow the principle of "equivalent segments" to ensure that the length of all sections of all sections after the model is unfolded is equal, otherwise the size deviation may occur in actual production.
#### ** 3. Note: Details determine success or failure **
1. ** Excessive and lack of compensation **
In actual operation, many engineers are likely to make mistakes of "over -compensation" or "insufficient compensation".** Excessive compensation ** will lead to large expansion size, and the workpieces after molding cannot meet the requirements; ** Insufficient compensation ** causes the material to be cracked or deformed during stamping.Therefore, bending compensation should be accurately controlled, especially for small and complex workpieces, it is necessary to repeatedly verify.
2. ** Stress concentration and tear **
During the stamping process, the workpiece is easy to generate ** stress concentration in some weak areas, especially in the sharp corner and transition area.Therefore, when the design is expanded, the ** rounded transition ** or ** tendons should be appropriately increased to reduce the risk of tearing during stamping.
3. ** Control of the gap in the mold **
The control of the gap between the mold is critical to the success of the stamping parts.If the gap is too large, the workpiece is prone to defects such as uneven edges and burrs. If the gap is too small, it is easy to increase friction during the stamping process, causing the workpiece surface to scratch.** Moom gap ** The material thickness and characteristics shall be reasonably set according to the material thickness and characteristics.
#### ** 4. Summary and suggestions **
Making high -quality stamping parts is a work that needs to be combined with theory and practice.** Accurate modeling **, ** material characteristics **, ** curved angle processing ** and other steps must be accurately executed, and it may cause huge deviations in production.In addition, in actual work, you should also be good at summarizing experience, learn to adjust the rebound compensation, and optimize the design of the mold.** Details determine success or failure **, especially in the field of stamping parts, the accumulation of experience and technology innovation are indispensable.
I hope that through the introduction of this article, you have a clearer understanding of the production skills and precautions of the underwriting of the underwriting parts, so that in the future practice, it can make high -precision expansion maps smoothly, providing accurate basis for production.