Screw guide module using principle of _ _ linear module manipulator linear positioning module parameters
by：Zhenyu
2020-09-30
Application of linear motor in machine tool feed system may appear four problems:
1. Fever problem: because the linear motor directly in poor machine internal cooling conditions, the primary and secondary windings of its on the heat generated by the electromagnetic energy conversion process, easy to enable higher temperature T; And T and will cause the rise of the motor winding resistance R increases, the driving force in order to ensure the output remains the same, will increase its current I, in turn, the increase of the I will make the T rise again, thus forming a vicious cycle of positive feedback process. And as a result of the linear motor winding and iron core on the machine tool guideway, the result will cause machine slideway serious thermal deformation.
this compared with rotary motor drive way, on the one hand, using the electric fan on the shaft itself or can well heat dissipation, on the other hand, a rotary motor after transmission by screw, etc, to the machine tool guideway space distance is far away, and there is no thermal deformation caused by the problem. So the machine tool feed system driven by linear stepper motor, to solve the heat dissipation problem is the crucial step.
2. Magnetic separation and protective problem: as the rotating magnetic field is closed, and the magnetic field of linear motor is open, and near the machine table, the workpiece, tool and chip magnetic material is easy to absorb the magnetic field, and interferes with their normal work. Therefore, although the electromagnetic better than permanent magnet, but its CiFangHu still can't be ignored. And also need to consider protection of machine tool cooling fluid, lubricating oil and so on.
3. Load disturbance problem: linear planetary gear motor drive control can be a full closed loop control. The pallet load ( Weight of workpiece, cutting force, etc. ) Change, for a stable system is outside interference, if the system of automatic adjustment is bad to can cause shock and instability.
so for the whole line feed drive system, in addition to the requirements of linear motor has strong load capacity, also must have a combination of speed, position detection, negative feedback, and high-speed information transmission, correction, and responsiveness. And also should try to reduce the friction damping between the guide rail, if use rolling guide or mat of magnetic levitation guideway. To increase the capacity of the linear motor at the same time, if appropriate increase the workbench self-respect, to reduce the load interference coefficient will have certain effect.
4. The weight problem in vertical feed: when linear stepper motor is applied in vertical feed mechanism, due to drag plate weight, therefore must solve the self-locking issues in power of the linear planetary gear motor and electric work of the effect of the gravitational acceleration on the problem. Therefore, in addition to increasing the appropriate balance weight block ( Or use the hydraulic support) , when the power to adopt mechanical self-locking device, also must adopt corresponding measures on the servo control gear coupling.
There are a lot of businesses today that are very much in demand and one of them is a electric motor suppliers.
Hangzhou Xiaoshan Zhenyu Transmission Co., Ltd. is one of China's biggest providers in the following categories of products: electric motor suppliers, planetary gear motor, types of gear reducers,etc. We also welcome ODM and OEM orders, and offer the highest standards of service, the cheapest deals, and the best buying experience. Get to know us at Zhenyu Transmission.
planetary gear motor problems are nothing new, almost every one of us have to go through them at some point of our lives and some of us never get rid of them. with the development of types of gear reducers technology, now provides a perfect cure for that.
1. Fever problem: because the linear motor directly in poor machine internal cooling conditions, the primary and secondary windings of its on the heat generated by the electromagnetic energy conversion process, easy to enable higher temperature T; And T and will cause the rise of the motor winding resistance R increases, the driving force in order to ensure the output remains the same, will increase its current I, in turn, the increase of the I will make the T rise again, thus forming a vicious cycle of positive feedback process. And as a result of the linear motor winding and iron core on the machine tool guideway, the result will cause machine slideway serious thermal deformation.
this compared with rotary motor drive way, on the one hand, using the electric fan on the shaft itself or can well heat dissipation, on the other hand, a rotary motor after transmission by screw, etc, to the machine tool guideway space distance is far away, and there is no thermal deformation caused by the problem. So the machine tool feed system driven by linear stepper motor, to solve the heat dissipation problem is the crucial step.
2. Magnetic separation and protective problem: as the rotating magnetic field is closed, and the magnetic field of linear motor is open, and near the machine table, the workpiece, tool and chip magnetic material is easy to absorb the magnetic field, and interferes with their normal work. Therefore, although the electromagnetic better than permanent magnet, but its CiFangHu still can't be ignored. And also need to consider protection of machine tool cooling fluid, lubricating oil and so on.
3. Load disturbance problem: linear planetary gear motor drive control can be a full closed loop control. The pallet load ( Weight of workpiece, cutting force, etc. ) Change, for a stable system is outside interference, if the system of automatic adjustment is bad to can cause shock and instability.
so for the whole line feed drive system, in addition to the requirements of linear motor has strong load capacity, also must have a combination of speed, position detection, negative feedback, and high-speed information transmission, correction, and responsiveness. And also should try to reduce the friction damping between the guide rail, if use rolling guide or mat of magnetic levitation guideway. To increase the capacity of the linear motor at the same time, if appropriate increase the workbench self-respect, to reduce the load interference coefficient will have certain effect.
4. The weight problem in vertical feed: when linear stepper motor is applied in vertical feed mechanism, due to drag plate weight, therefore must solve the self-locking issues in power of the linear planetary gear motor and electric work of the effect of the gravitational acceleration on the problem. Therefore, in addition to increasing the appropriate balance weight block ( Or use the hydraulic support) , when the power to adopt mechanical self-locking device, also must adopt corresponding measures on the servo control gear coupling.
There are a lot of businesses today that are very much in demand and one of them is a electric motor suppliers.
Hangzhou Xiaoshan Zhenyu Transmission Co., Ltd. is one of China's biggest providers in the following categories of products: electric motor suppliers, planetary gear motor, types of gear reducers,etc. We also welcome ODM and OEM orders, and offer the highest standards of service, the cheapest deals, and the best buying experience. Get to know us at Zhenyu Transmission.
planetary gear motor problems are nothing new, almost every one of us have to go through them at some point of our lives and some of us never get rid of them. with the development of types of gear reducers technology, now provides a perfect cure for that.
