What should we pay attention to when processing precision stamping parts?

The key points for attention in the processing of precision stamping parts are: controlling the precision of materials and dies, standardizing process parameters, doing a good job in process quality control and equipment maintenance, and paying attention to safety protection to ensure product precision and production stability.

First, the preparation points before processing

The material selection should match the stamping process, and the parameters such as material thickness, hardness and tensile strength should be defined to avoid die wear and workpiece deformation caused by too hard or too soft material.

Check the accuracy of the die to ensure that the gap between the punch and the die is even (in line with the requirements of material thickness), the die surface is free of wear and scratches, and the positioning pin and the guide sleeve of the guide post cooperate smoothly.

Clean up the oil stain, rust and impurities on the surface of the material, and level it when necessary to prevent the stamping accuracy from being affected or the die from being damaged.

Debug the stamping equipment, and calibrate the slider stroke, closing height and pressure parameters to ensure that the equipment runs smoothly without abnormal jitter or noise.

Second, the processing process control

Strictly follow the parameters set in the process documents, control the stamping speed, pressure and feeding accuracy, and avoid excessive burr and out-of-tolerance of the workpiece caused by parameter fluctuation.

Ensure the stability of the feeding mechanism, calibrate the feeding step when automatic feeding is adopted, use safety auxiliary tools for manual feeding, and prohibit hands from directly touching the die mouth.

Check the quality of the workpiece in real time, focusing on dimensional accuracy, form and position tolerance and surface roughness, and find defects such as burrs, warpage and cracks in time.

Avoid overheating of the die caused by continuous long-term stamping, stop cooling when necessary, and regularly clean up the residual waste on the die surface to prevent the die from being stuck or the workpiece from being scratched.

Third, mold and equipment maintenance

Regularly lubricate and maintain the mold, and apply special lubricating oil on the contact surfaces of guide posts, guide sleeves and convex-concave molds to reduce wear.

If abnormal sound is found in the stamping process and the accuracy of the workpiece decreases, stop the machine immediately for inspection, repair the wear of the die or replace the wearing parts (such as springs and thimbles).

Regularly calibrate the pressure sensor and travel switch of stamping equipment to ensure the accuracy of equipment parameters, and readjust the positioning when replacing the die.

When storing the mold, do a good job of moisture-proof and rust-proof treatment to avoid the oxidation of the mold surface affecting the machining accuracy.

Fourth, quality inspection and safety protection

After the first piece is processed, it needs full-scale inspection, and mass production can only be carried out after using tools such as calipers, micrometers and projectors to confirm that it meets the requirements of the drawings.

Sampling in proportion in batch production, focusing on key dimensions and easy-to-deform parts, making inspection records, and tracing back the causes of defective products in time.

Operators should wear protective gloves and goggles, and equipment should be equipped with safety protection devices (such as photoelectric protectors and fences) to prevent industrial accidents.

After the machining is completed, the workpiece is deburred and cleaned to avoid burr affecting the subsequent assembly or use safety.