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Views: 231 Author: Site Editor Publish Time: 2022-04-28 Origin: Site
Cylinder installation is a key consideration. If the installation method is wrong, it may lead to inaccurate operation, damaged reliability and premature failure.
For example, hydro pneumatic cylinder is rigidly fixed on the structure of the machine tool workbench. It can rotate to form a part of the connecting rod, and its fixed point is the cylinder block and its piston rod end. Components connected to the piston rod end can be hinged on one or more planes in many cylinder application scenarios. However, in other cases, the end of the piston rod can move freely, such as in the application of pneumatic pusher cylinder.
In different application types, the mechanical principle corresponding to cylinder installation will be different. The installation of the cylinder shall ensure that the lateral load on the piston rod bearing is reduced to an absolute minimum or completely eliminated. Lateral load is a component of the force acting laterally on the bearing axis. Many premature wear and faults come from lateral load.
The round body air cylinder has three fixing modes: side installation, rigid fixing of front flange plate and rigid fixing of rear flange plate. In another case, if there are threads on the front end or rear end cover of the pneumatic piston cylinder, it can be screwed to the structure with nuts. long stroke pneumatic cylinders or telescopic pneumatic cylinder can be installed with pull rod extension so that it can be fixed by flat plate.
When the cylinder block is part of the connecting rod, it must be able to rotate freely in one or more planes at the mounting point. To achieve varying degrees of balance between the pneumatic piston cylinder and the load system, you can choose between the center trunnion, the front clevis and the rear hinge. The rotary attachment at the end of the piston rod can use a front hinge, a clevis or a universal eye.
Do not add unsupported load to the pneumatic piston cylinder; Try to set the supporting load on the roller guide or slider.
Considering the pneumatic cylinder stroke, the weight of a single long external stroke piston rod will cause a large bending moment. The safer method is to suspend the rod end on the roller track or provide other external guidance to minimize the bending moment.
Misaligned locking pneumatic cylinder and guided loads can easily jam the cylinders. In order to eliminate this lateral load on the bearing of the front cylinder head, the front fork and groove can be installed.
The offset load may cause bending moments on the cylinder piston rod. The installation of external bearings can effectively reduce the lateral load.
The weight of the horizontally mounted rear hinge causes bending moments in the metric air cylinders. The installation of a central trunnion at the cylinder balance point helps to eliminate this bending moment.
It is impossible to completely eliminate the lateral load of the univer pneumatic cylinder, but by adopting good operation means and corresponding mechanical design knowledge, the lateral load can be reduced to the greatest extent, which will help to prolong the service life and performance of the univer pneumatic cylinder.
