Application method of stepping coefficient of equal-thickness stamping-forging of hardware with structure like Chinese character 'er'
A hardware and coefficient technology, which is applied in the field of step coefficient of thick punching and forging, can solve the problem that the exact number of working steps of hardware cannot be quickly determined, etc.
Inactive Publication Date: 2014-09-24
合肥金海康五金机械制造有限公司
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[0005] In order to overcome the deficiencies of the prior art, the present invention provides a The application method of the step coefficient of equal-thick stamping and forging of type structure hardware to solve the problem that the existing technology cannot quickly determine the exact number of working steps for processing the hardware
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[0014] The specific implementation process is as follows:
[0015] 1. The material of the hardware blank is cold-rolled plate, the material thickness t1, t2, t3 are 1, 0.6, 0.4mm respectively, the length L of the blank drawing is 54mm, and a large number of experiments are carried out to obtain the inner distance between the two straight arms (no The relationship between the value and the material thickness is shown in Table 1.
[0016] Table 1 The relationship between the distance between the two straight arms of the type structural hardware and the thickness of the material
[0017] t1＝1 t2＝0.6 t3＝0.4 d0 18.00 18.00 18.00 d1 14.28 14.63 14.97 d2 11.78 12.32 12.75
[0018] d3 9.90 10.61 11.29 d4 8.50 9.44 10.27
[0019] 2. According to the definition of step coefficient, the calculated step coefficient is shown in Table 2.
[0020] Table 2 The step coefficient of each step of equal thickness stamping and forgin...
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The invention relates to an application method of the stepping coefficient of the equal-thickness stamping-forging of hardware with a structure like the Chinese character 'er'. The application method comprises the steps as follows: step 1, determining the numerical values of a distance d0 of two bent straight arms of a blank of hardware to be machined and a target value D, and calculating the relative width of the blank according to the formula t / L*100, wherein the t represents the width of the blank, and the L represents the length of the blank; step 2, deducing stepping coefficients s1, s2 to sn according to the formula sn-1=kmn, wherein the k=1.08-1.09, n=2,3, ......, and the m represents the stretching coefficient of the blank of the hardware; step 3, according to the stepping coefficient sn calculation formula: sn=dn / d(n-1), substituting the formula into stepping coefficients s1, s2 to sn obtained in the step 2 to calculate, obtaining the distance between two straight arms d1=s1*d0 after the primary shortening of the blank of the hardware, and obtaining the distance d2=s2*d1, ...... till the obtained numerical value dn is less than D, and finally obtaining the minimum process procedure number n of the equal-thickness stamping-forging of the hardware with the structure like the Chinese character 'er' is obtained.
Description
technical field [0001] The present invention relates to a The application method of the step factor of equal thickness stamping forging of structural hardware. Background technique [0002] Among electronic products, there is a class with Magnetic support hardware for local structures (such as figure 1 shown), the typical features are: the hardware The type local structure includes two vertical straight arms, and the sum of the heights of the two is greater than the distance between the two. The bracket is used to install the permanent magnet. In order to ensure the uniform distribution of the magnetic force lines, the thickness of the magnetic force bracket must be uniform throughout, so the thickness of the two straight arms is equal to the thickness of other parts of the hardware. At a rough glance, this product looks like an ordinary stamped part. If it is stamped from a metal plate, it is easier to ensure that the thickness of the magnetic bracket is uniform ever...
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IPC IPC(8): B21J5/06G06F19/00
Inventor 王可胜陈勇章杜习鹏吕德明陈陆军
Owner 合肥金海康五金机械制造有限公司