Machine tool pad iron is one of the important accessories of electromechanical equipment.It is mainly placed between the bottom of the equipment and the ground(or foundation),and some are placed between the vibration source and the equipment body.Its main functions include:first,adjusting the horizontal state of the equipment;One is to form a fixed or elastic connection between the equipment and the foundation and isolate vibration;The second is to prevent the vibration of the vibration source from being transmitted to the equipment body.The common structural form of pad iron is a wedged pad iron made of cast iron material.The wedge can be moved back and forth to change the size of the pad iron in the vertical direction.By jointly adjusting multiple sizing blocks and using a level gauge,the horizontal condition of the equipment can be adjusted.This is called a rigid pad iron.Currently,the more popular type is damping pad iron,which not only has the function of traditional pad iron,but also has the effect of damping.The connection or vibration isolation effect of sizing blocks depends on the condition of the equipment itself and the foundation.If there is a good foundation,rigid sizing blocks can be used to firmly connect the equipment to the foundation to increase the quality of the equipment and reduce the center of gravity of the equipment.If the equipment itself has good dynamic performance,it can be elastically connected to the ground through vibration damping pads to reduce mutual transmission of vibration.Therefore,the selection of pad iron is not only related to the characteristics of the equipment itself,but also related to the foundation condition.

 

　　Machine tool damping pad iron is currently widely used as an accessory of mechanical equipment.According to the basic theory of vibration reduction,when selecting sizing blocks,it is not only required to keep the ratio of the natural frequency of the equipment itself to the natural frequency of the elastic sizing block in a suitable range,but also to note that the equipment itself should have a rigid body structure.The combination of the two can achieve a relatively ideal vibration reduction effect.It is important not to assume that with elastic vibration damping pads,all issues related to vibration reduction can be referred to the vibration damping pads for treatment.If you do not pay attention to improving the rigidity of the equipment itself,it can sometimes backfire.The bearing characteristics and natural frequency characteristics of elastic damping pad iron are related not only to the structural form and size of steel,but also to the rubber material and its hardness.During the use process,elastic pad iron with suitable bearing range and natural frequency should be selected according to the structural and dynamic characteristics of the equipment itself.At the same time,during the use process,full attention should be paid to the unique problems of elastic pad iron such as aging and creep of rubber,air leakage,and timely inspection and adjustment should be achieved.

 

　　The machine tool damping pad iron itself has a certain range of bearing capacity,but it is not to say that the damping effect of the pad iron is the same within the range of bearing capacity.Therefore,in practical use,it is also necessary to choose an ideal load.If the load is too small,the pad iron will have a higher natural frequency,thereby reducing the vibration isolation function;An overloaded elastic pad iron will lose its two-way elastic effect,and it will also not have the proper vibration isolation effect.Not only that,but also excessive material internal pressure caused by overloading can shorten the service life of the pad iron.