It is widely used in various industries. In order to meet the use requirements, the quality control of metal stamping parts is more strict. Most precision metal stamping parts are sheet metal stamping parts, which can be completed through stamping, bending, stretching and other processes. What are the principles for precision machining of hardware?
Precision machining of hardware parts
1、 Five principles for precision machining of hardware:
1. Fine principle
The number of processing procedures for bending metal stamping parts mainly depends on the disorder degree of its structural shape, which depends on the number of bending angles, relative direction and bending direction.
2. Exquisite principle
When the metal stamping parts are processed and the section quality and standard precision are required to be high, the fine blanking process can be selected after the blanking process by adding the finishing process or diameter.
3. Principle of accuracy
When blanking workpieces with simple shapes, a single process die can be used. When blanking workpieces with disordered shapes, due to the limitation of the structural strength of the die, the table concludes that blanking should be divided into several parts, and multiple metal stamping processes should be used. If necessary, continuous die can be used. For workpieces with high flatness requirements, a leveling process can be added after the blanking process to accurately apply the characteristics of each product to the production process.
4. Precision principle
The number of processes for processing deep drawn metal stamping parts is related to the material property, drawing height, number of drawing steps, drawing diameter, material thickness and other conditions, and can only be recognized after the calculation of drawing process.
5. Principle of high-quality products
In order to ensure the processing quality of metal stamping parts and the stability of the processing technology of metal stamping parts, it is sometimes necessary to increase the number of processes, such as the punching of additional positioning holes for bending parts, and the addition of deformation reduction hole punching transfer deformation area in the forming process, so as to ensure that each product is fine, delicate and exquisite.
Precision machining of hardware parts
2、 The precision processing of hardware follows five operating procedures:
1. During the hardware processing, the operators shall keep correct posture and have enough spirit to cope with the work. During the operation, they must concentrate on their work. It is strictly prohibited to chat and cooperate with each other. The operators shall not operate in a fretful and tired state to avoid accidents and ensure the safety of operation. All employees shall check whether their clothes meet the work requirements before entering their posts.
2. Before the mechanical action, check whether the moving part is filled with lubricating oil, then start and check whether the clutch and brake are normal, and run the machine without load for 1-3 minutes. Do not operate the machine in case of mechanical failure.
3. The machine can only be started after all other personnel leave the mechanical working area and take away the sundries on the workbench when starting the power supply and starting the machine.
4. When the machine is working, it is prohibited to put your hand into the slider working area, and it is prohibited to take and place the workpiece by hand. Tools that meet the standards must be used when taking and placing workpieces in the die. In case of any abnormal sound or malfunction of the machine, the power switch shall be turned off immediately for inspection.
5. When replacing the die, first turn off the power, and then start to install and debug the die after the punch movement department stops running. After installation and adjustment, the flywheel shall be moved by hand for trial punching twice. In order to avoid unnecessary collision between the machine and the product to be processed, the upper and lower molds must be checked for symmetry and rationality, the screws are firm, and the blank holder is in a reasonable position.
The precision processing of hardware must be simple in shape and reasonable in structure, which is conducive to simplifying the mold structure and the number of processes, that is, to complete the processing of the whole part with the least and simplest stamping process, to reduce the use of other methods for processing, to facilitate the stamping operation, to facilitate the organization of mechanized and automated production, and to improve labor productivity.