The development trend of machine tools

Machine tools are currently shifting in several major directions, starting with the increase in the use of 5-axis machines and multi-tasking machines. 5-axis machining machines and multi-tasking machines began to appear on the market around the second half of 1990, and are now widely used in the market. Features include grinding, machining, and workpiece handling robots in addition to cutting. In addition, there is now a trend to further increase the number of control axes, a tendency to be more complex. Second, the machine tool becomes easier to operate. For example, the function of automatically correcting the mechanical thermal displacement in the machine is set in the machine tool; the function of checking the mutual interference between the grinding tool and the workpiece; the function of monitoring the state of the spindle in operation (involving temperature, vibration, displacement, etc.); and the intelligence of the device Chemical. These changes will make the machine easier to operate. Then there is the development of machine tools to high precision and micromachining. This improves the performance of components such as a DD motor or a linear motor, and makes it possible to determine the position accuracy of the sub-precision stage. In addition, the machine tool has become more space-saving. At present, the requirements for high performance of compact machines for high-volume production lines are also significant. In order to further suppress the width of the device and improve its maintainability, a 5-axis processing machine with a device width of 1000 mm is now available. The last point is that machine tools are moving in the direction of reducing environmental load. There are many machine tools that are designed to recognize environmental problems in the market, such as the reduction of air flow in oil and gas lubrication and the switching from oil and gas lubrication to grease lubrication.
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Turntable bearing basic maintenance knowledge

1. After the large-scale slewing bearing installed and put into operation, after 100 hours of continuous operation, it should be fully checked whether the pre-tightening torque of the mounting bolt meets the requirements. The above inspection should be repeated every 500 hours after the cumulative operation.

Second, find problems in time and solve them in time. After the slewing bearing is installed in place, it should be filled with an appropriate amount of grease. When filling the grease, the bearing should be rotated while being added to make the grease evenly distributed.

3. After the slewing bearing has been working for a period of time, some grease will inevitably be lost. Therefore, for normal operation, the slewing bearing should be filled with grease once every 50-100 hours of operation, and the high temperature environment or dust is more. The slewing bearing working under the working condition should be filled with grease once for 30-40 hours.

4. When the slewing bearing is running for 1000 hours, the bearing should be fully maintained. It is necessary to thoroughly clean the bearing. Please remove the bearing seal and clean the internal grease and dirt. It should be cleaned with kerosene or gasoline, and diesel can be used instead. After cleaning, restore the installation and add a proper amount of new grease. When a machine using a slewing bearing needs to be shut down for a long period of time, a sufficient amount of grease must be added to prevent corrosion inside the slewing bearing.

Proper maintenance is critical to extending the life of the bearing, and proper maintenance allows the bearing to operate more reliably.
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