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Shenyang Wanhaide Forging Machine Tool Co., Ltd

Contact: Li Shijun (13940547998) with wechat

Contact: Li Ying (15502475265) with wechat

Tel: 024-25870279

Fax: 024-25870279

E-mail: 1412909433@qq.com

Postcode: 110025

Address: No.28-1, Zhenxing 7th Street, Hutai new town, Shenyang, Liaoning Province

Sales address: Gate 3, No. 32, Baogong North Street, Tiexi District, Shenyang City, Liaoning Province

website: en.sywhddy.com

Brief introduction of walking shear

2020-05-15
times

Step shear is a new type of shears. The common crank connecting rod shear spindle drives the blade up down to complete a shearing process. The main shaft eccentricity of the walking shear is smaller than that of the ordinary shearing machine, the rotation speed is fast. The spindle drives the blade up down many times, the shearing process can be completed only after continuous accumulation. Therefore, the main parts of step shear structure are vibration shear system accumulator. The vibration shear system is actually a crankshaft mechanism with small eccentricity. The main motor rotates quickly to push the lower tool rest to cut into the object to be cut each time. At the same time, the upper tool rest is pushed by the storage mechanism to continuously "feed" the sheared object until it is cut off. There are three types of storage mechanism in China: screw (electric), wedge force (pneumatic) water storage type. The upper turret of screw type storage mechanism can be pressed down smoothly, but the return stroke is very slow, which is conducive to increase the shearing times. However, the water storage type uses the balanced feeding cylinder to raise the tool carrier quickly, which is beneficial to increase the shearing times. At present, three types of step shear have been tested used in Wuxi, Shanghai Hangzhou.

Shearing machine

Shearing machine

Because of the small eccentricity, the stepping shear is sheared by the accumulation, so the shearing moment is smaller than that of the general shearing machine. Therefore, the motor with smaller power can be used the weight of the equipment is lighter. However, the walking shear is equivalent to the upper cutting shear, the shearing quality is as good as that of the down cutting shear, there should be a swing roller table after the shear; the wall panel of the lower tool rest the eccentric shaft bearing are easy to enter the garbage wear easily. In the process of shearing, it is difficult to ensure that the storage speed can keep up with the shear vibration frequency, so that the actual pure shear time is longer than the theoretical shear time calculated according to the cumulative up down of the eccentric spindle; therefore, the stepping shear has been widely used in the steel rolling workshop, each plant is still in the experimental improvement stage, which needs further test improvement.

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