(1) Select the assembly datum. When assembling, the reference parts should be selected first. The selection principle of reference parts is determined according to the dependence of the main parts of the mold in the machining process. The main parts that can be used as assembly reference parts are punch, die, punch, guide plate and fixed plate.

(2) Assembly of parts. Component assembly refers to the assembly work of connecting more than two parts into one part according to the specified technical requirements before the final assembly of the mold. For example, the assembly of mould base, the assembly of punch and die with fixed plate, the assembly of parts of discharging and pushing mechanism, etc. These parts should be assembled according to the function of each part, so as to ensure the assembly accuracy of the whole Dongguan stamping die.

(3) Integral assembly. Assembly is the process of combining parts into a complete Dongguan stamping die. Before the final assembly, the benchmark parts should be selected and the assembly sequence of the upper and lower dies should be arranged.

(4) Adjust the gap between the male die and the female die. When assembling the die, the uniformity of the gap between the punch and the die must be strictly controlled and adjusted. Only after adjusting the clearance can the screws and pins be tightened.

The main methods to adjust the gap between convex and concave die are light transmission method, measurement method, gasket method, coating method and copper plating method.

(5) Inspection and debugging. After the stamping die is assembled. It is necessary to ensure the assembly accuracy and meet the specified technical requirements, and check the functions of various parts of the mold according to the technical conditions of mold acceptance. Try the mold under the actual production conditions, and adjust and correct the mold according to the production conditions of the trial mold. After the die test is qualified, the die processing and assembly is basically completed.

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Basic knowledge of stamping die assembly

Hardware mold belongs to cold stamping mold, and several basic knowledge that should be paid attention to in the assembly process are as follows;

1, drawing review, it is most important to really understand the drawings and understand the designer's design instructions, otherwise it is blind people touching the elephant.

2. Check whether the shape and size of the workpiece parts are consistent with the drawings, and start assembly;

1, clearance, whether the clearance between the workpiece and the template is reasonable, whether the blanking clearance of the die is reasonable, etc.

2. Avoidance, that is, whether the parts are avoided and sufficient after pretreatment.

3. Spring force, spring force of workpiece ejection device, contact plate unloading force, etc. Whether it is sufficient, whether the compression and pre-tightening of the spring are sufficient and reasonable.

Basically, you should pay attention to these when setting, and the rest depends on experience!

Industrial status quo

The disorderly competition in the hardware mould industry began to appear, and the disadvantages of low hardware cost, low product structure and low technical content were increasingly exposed.

The hardware mould industry began to rise in the South China Sea in the 1960s, and reached its peak in the late 1980s. At that time, the threshold of hardware mould industry was very low and no technology was needed. Spend 30 thousand yuan to buy some old equipment, and you can open a family-style hardware mold processing factory.

After more than 40 years of development, there are more than 1 10,000 metal mold processing enterprises, most of which are labor-intensive small enterprises.

Need ultra-precision machining, metal processing die industry will become bigger and bigger. This is due to the increasing size of parts formed by molds and the requirement of high production efficiency, which leads to the development of multi-cavity in one mold. Multi-functional compound mould in mould industry will be further developed.

development trends

Judging from the mold, the global economy will still be in the adjustment period after the financial crisis, and the overall situation may be slightly better than that in 20 12, but the situation will still be complex and changeable, with increased risks and uncertainties, and sustained downturn and low-speed growth will remain the main tone.

Bright Lo, a mold expert, said that China's economy is in a critical period of transition in the growth stage and seeking a new equilibrium. The demand of mould market began to pick up, and the trend of good development became increasingly clear.