Performance and characteristics of eddy current grinding and polishing machine:
1. This machine is the latest fully automatic high double eddy current grinding and polishing machine. It has the characteristics of high degree of automation, beautiful appearance, reasonable structure, easy operation, large speed range, balanced operation, low noise, and high grinding efficiency. This machine can effectively solve the problems of overlapping and uneven grinding of workpieces in vibration polishing machines, especially for small and medium-sized workpieces with thick oxide films and large burrs, which are difficult and time-consuming to process with vibration machines. However, with eddy current grinding and polishing machines, ideal results can be achieved in a short time, and the smoothness can be improved by more than 2 levels. The grinding efficiency is 10 times that of a vibrating light decoration machine and more than 20 times that of a drum type machine
2. This machine can be widely used in various industries for deburring, chamfering, descaling, polishing and other processes of stamping parts, machined parts, forged castings, heat treatment and other common workpieces of metal and some non-metal materials. Especially for small and medium-sized parts with complex shapes, large burrs, and thick oxide scales, it provides the most ideal processing equipment
Structure and working principle:
1, Main structure:
This machine is mainly composed of a grinding tank, a vibrating screen, a machine base, an automatic flipping structure, and an electrical cabinet
1. Grinding groove: composed of a bottom rotating disc and a polygonal fixed grinding groove. The inner lining of the grinding groove is made of high-strength and wear-resistant imported polyurethane (PU) with a considerable thickness, which is durable in use. The grinding groove is integrated with the motor and can be automatically flipped 90 ° left and right by operating the button. The abrasive and workpiece are poured into the hopper, and the workpiece and abrasive are sorted and discharged automatically through vibration screening and cleaning. The abrasive is then returned to the left and right feeding hoppers through the conveyor belt for the next round of product grinding.
2. Vibration screen: welded from steel plates, the screen mesh can be replaced according to the size of the workpiece and abrasive to achieve automatic material separation. The vibrating screen is equipped with a spray cleaning device, which achieves clear results through spraying when screening products and abrasives.
3. Machine base: welded from square steel
4. Automatic flipping mechanism: using a motor rotating device, the abrasive in the hopper can be automatically flipped and poured into the grinding bucket for grinding and polishing by operating the button.
5. Electrical cabinet: composed of independent enclosed boxes. Control the overall operation of the machine through the indicator buttons on the panel.
2, Working principle:
The eddy current grinding and polishing machine utilizes the centrifugal force generated by the high-speed operation of the bottom rotary disc to create strong friction between the workpiece and the abrasive in a fixed groove, forming a spiral eddy current motion that causes the workpiece and abrasive to rotate and spiral at high speed. Therefore, the processed parts can achieve the desired effect in a very short time.
Electrical system and schematic diagram
1. This machine adopts the international famous brand Delta frequency converter. By changing the "grinding operation speed" on the human-machine interface, the motor speed can be adjusted arbitrarily, so that the rotating disk can achieve stepless speed change within 0-180 revolutions per minute to adapt to different speed requirements of various processed parts. The vibrating screen motor adopts a dedicated vibrating motor, which controls the operation of the vibrating screen through buttons on the control panel. The electrical system is equipped with overload protection, which can automatically disconnect the power supply when under load to ensure the safe operation of the host.
2. The time equipment for all PLC programs in the control box can be customized according to the specific needs of the workpiece.
Installation and adjustment:
1. The machine should be placed on a flat cement floor, with all four feet firmly padded
2. Use a 500 volt megohmmeter to test the windings of each part of the motor, and the insulation resistance should not be lower than 0.38 megohms
3. Connect the power supply, try operating each indicator button to see if it works properly, and connect the ground wire properly
4. The horizontal gap between the rotary disc and the fixed grinding groove should be maintained within a range of 1MM. If it is not suitable, adjustments can be made: first open the rotary center cover, turn the adjustment screw clockwise to reduce the gap. Loosen the screw clockwise and tap down with a hammer and cushion block to enlarge the gap. Due to the tight fit of the shaft, if the wrench cannot adjust the thread, it can be turned by tapping the wrench with your hand. After adjusting appropriately, install the shaft cover and tighten the locking bolt
5. The tension of the V-belt should be appropriate. If it is too loose, it will cause slipping during operation. You can remove the motor cover and adjust the fixing nut on the motor board