Cold heading is widely used in the manufacturing process of fasteners such as bolts, studs, screws, and nuts, characterized by smooth operation, high precision, high production rate, and ease of automation.
The multi-station automatic cold heading machine employs the cold heading method to process disc blanks or bar stock through roller wheel feeding, sequential feeding, cutting, ball pressing, angle pressing, and punching, completing several processes in one machine. The cold heading stations are arranged horizontally, featuring accurate positioning, stable operation, and convenient maintenance. Below, we will briefly introduce the precautions for cold heading the processing of fasteners.
I. Performance Requirements for Components of Multi-Station Cold Heading Machines
(1) The connection between the crankshaft and the body, as well as the impact connecting rod, uses high-wear-resistant alloy copper tile connections, which have a large load-bearing capacity, long service life, and low maintenance cost.
(2) The body is made of ductile iron with added alloys, featuring high tensile strength and good wear resistance.
II. Performance Requirements for Components of Multi-Station Cold Heading Machines
(3) The roller wheel transmission system uses precision ball bearings, ensuring smooth operation, low noise, and accurate feeding precision.
(4) The cutting tools are made of high-speed steel or hard alloy materials, with high hardness and good wear resistance, ensuring the precision and efficiency of cutting.
(5) The ball pressing molds and angle pressing molds are made of high-quality die steel, undergo special heat treatment, and have high toughness and wear resistance, ensuring the precision and stability of the formed parts.
(6) The punching dies are designed reasonably, with high punching precision, easy replacement, and suitable for various punching requirements.
III. Operational Points of Cold Heading Process
(1) Before starting the machine, it is necessary to check that all safety devices are intact to ensure the equipment operates safely.
(2) Operators should be familiar with the machine's operating procedures and strictly follow the operation manual to avoid equipment damage or safety accidents due to improper operation.
(3) Regularly inspect the wear condition of the molds during the cold heading process, and replace molds with severe wear in a timely manner to ensure product quality.
(4) Pay attention to adjusting the feeding speed and pressure to adapt to raw materials of different materials and sizes, ensuring the stability of the processing process.
(5) During the cold heading process, maintain the normal operation of the lubrication system to reduce mold wear and extend mold life.
IV. Quality Control of Cold Heading Process
(1) Conduct strict quality inspections on the raw materials to ensure that their chemical composition, mechanical properties, and dimensional accuracy meet the process requirements.
(2) Strictly control the process parameters during production, such as temperature, speed, and pressure, to ensure product consistency.
(3) Implement quality control throughout the entire process, from raw materials to finished products, with strict quality checks at each process step.
(4) For non-conforming products, promptly analyze the causes, take measures for rectification, and prevent quality issues from recurring.
V. Conclusion
As a professional machinery company, we fully understand the importance of the cold heading process in the production of fasteners. Our multi-station automatic cold heading machines have won widespread market recognition for their efficient performance, stable operation, and convenient maintenance. We always adhere to technological innovation as the core, continuously improving the quality and performance of our products, and providing the best solutions for our customers. We look forward to working hand in hand with more partners to create a bright future together.
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