Cold heading machine is a specialized equipment mainly used for mass production of nuts, bolts and other fasteners

Cold heading process

(1) According to the theory of metal plasticity, a certain pressure is applied to the metal billet at room temperature to cause plastic deformation in the mold cavity, and it is formed according to the specified shape and size.

(2) It is necessary to choose high-quality metal materials with good plasticity, such as rivet steel, whose chemical composition and mechanical properties have strict standards.

(3) There are multiple models and series of cold heading bolt and nut forming machinery available. The equipment has reliable performance, high efficiency, and stable product quality.

(4) The product has a large forging force during molding, and the configuration power is high. The equipment requires a large initial investment. Therefore, producing specifications below M24 is the most economical.

(5) Has good surface quality and high dimensional accuracy. Due to the presence of cold work hardening during the forging process, the amount of deformation should not be too large. Reduce cracking.

(6) The cold heading process is suitable for products with large quantities and various specifications, in order to reduce costs. Modern cold heading machines have increased from simple two station machines to multi station machines. Currently, there are newer varieties of cold heading machines in China, including 5-mode, 6-module, and 6-module extended cold heading machines

Safety operating procedures for cold heading machine

2. Before driving, it is necessary to carefully check whether all fasteners of the equipment are locked and whether the safety protection devices are intact. Regular inspections should be carried out during work to prevent loosening due to severe vibration and accidents. 1. It is prohibited to operate the cold heading machine while wearing gloves.

After adjusting the equipment, first turn the flywheel to check if all mechanisms are working properly. After removing the lever used for turning the car, start the motor. It is strictly prohibited to start the motor while turning the car.

4. Before driving, all faults should be eliminated and a short time rotation should be performed before starting the forging test.

During the operation of the equipment, operators should stand in a safe position and are strictly prohibited from picking up workpieces at the concave convex mold. They can only view the product at the bottom.

When replacing the product, it is necessary to carefully adjust the mold and punch, and carefully inspect whether each component is normal.

7. In the production process, if a malfunction occurs, it must be stopped immediately, the cause must be identified, and hidden dangers must be eliminated. Do not drive when the brakes fail.

8. The safety board (safety pole) must be equipped with protective devices to prevent accidents caused by breakage. All protective devices must not be dismantled or lost at will.

Characteristics and parameters of cold heading machine

2. The body is made of 500 cast ductile iron with added alloy, which has high tensile strength and good wear resistance. 1. The connection between the crankshaft and the body, as well as the impact connecting rod, is made of high wear-resistant alloy copper tiles, which have a large bearing capacity, long service life, and low maintenance costs.

3. Adopting a two-stage gear transmission system, the transmission efficiency is high and the transmission torque is large.

4. Equipped with pneumatic clutch brake to reduce motor power consumption.

5. The cutting system adopts a guide plate to drive the cutting blade rod, with the guide plate reciprocating and the cutting force transmitted in a straight line. The force is large, stable, and has good dynamic balance.

6. The clamp system can be flipped or translated 180 degrees. Beneficial for arranging the molding process.

7. Equipped with a variable frequency speed regulation device, it can achieve infinite speed regulation within a certain range.

8. Equipped with fault detectors and safety protection devices, the equipment will automatically shut down in case of failure, providing maximum protection for the equipment and molds.

9. Install a thrust device on the feeding box to improve feeding accuracy.

Cold heading machine parameters

Efficiency: 120-130 pieces/minute Dimensions: 2300X1250X1270

Slide pillow stroke: 85mm

Knife rod stroke: 40mm

Workstation spacing: 60mm

Maximum component: M6,M10X1

Motor power: 5.5kw

Number of motor poles: 6 poles

Belt model: 3302

Outer diameter of large flywheel: 900mm

Number of positions: 3

Maximum cutting: 6.5mm