From：Zhaoqing second machine tool works Co., Ltd. Release time：2019-08-12
Overview：Polishing machines, also known as grinders, are often used for mechanical grinding, polishing and waxing. The working principle is as follows: the motor drives the sponge or the wool polishing disc mounted on the polishing machine to rotate at a high speed, and the polishing disc and the polishing agent cooperate with each other and rub against the surface to be polished, thereby removing the paint surface contamination, the oxide layer and the shallow mark.
What is Automatic Polisher? Working principle and precautions
Polishing machines, also known as grinders, are often used for mechanical grinding, polishing and waxing. The working principle is as follows: the motor drives the sponge or the wool polishing disc mounted on the polishing machine to rotate at a high speed, and the polishing disc and the polishing agent cooperate with each other and rub against the surface to be polished, thereby removing the paint surface contamination, the oxide layer and the shallow mark. purpose. The rotation speed of the polishing disc is generally 1500-3000 r/min, mostly infinitely variable speed, and can be adjusted at any time according to the needs during construction.
1, according to the power source is pneumatic and electric. Pneumatic type is safer, but requires a gas source; electric type is easy to solve power problems, but must pay attention to electricity safety.
2, according to the function of the dual-function industrial matte / polishing machine and simple polishing machine. The dual-function industrial sanding and polishing machine can be equipped with a grinding wheel to polish the metal material, and can be replaced with a polishing plate for car paint protection. This machine is heavy, 2-3 kg, but it works very smoothly and is not easy to damage. The speed of this model can be adjusted for professional beauty care personnel. The simple polishing machine is actually a drilling machine. It is small in size and the speed is not adjustable. It is difficult to balance when used. Professional beauty care workers generally do not use such models.
3, according to the speed classification, there are three types of high speed polishing machine, medium speed polishing machine and low speed polishing machine. The high speed polishing machine rotates at 1750-3000 r/mAn, and the rotation speed is adjustable; the medium speed polishing machine rotates at a speed of 1 200-1 600 r/rain, and the rotation speed is adjustable; the low speed polishing machine rotates at 1 200 r/min, and the rotation speed is not adjustable.
How Automatic Polisher works
The key to the operation of the polisher is to try to get the maximum polishing rate in order to remove the damage layer from the polishing as quickly as possible. At the same time, the polishing damage layer will not affect the final observed tissue, ie, it will not cause false tissue. The former requires the use of coarser abrasives to ensure a larger polishing rate to remove the polished damage layer, but the polished damage layer is also deeper; the latter requires the use of the finest material to make the polished damage layer shallower, but polished The rate is low.
The best way to resolve this contradiction is to divide the polishing into two phases. The purpose of rough polishing is to remove the polished damage layer. This stage should have the maximum polishing rate. The surface damage caused by rough polishing is a secondary consideration, but it should be as small as possible. Secondly, fine polishing (or final polishing). The purpose is to remove surface damage from rough polishing and minimize polishing damage. When the polishing machine is polished, the sample grinding surface and the polishing disc should be absolutely parallel and evenly pressed on the polishing disc, taking care to prevent the sample from flying out and creating new wear marks due to too much pressure. At the same time, the sample should be rotated and moved back and forth along the radius of the turntable to avoid local wear of the polished fabric too fast. During the polishing process, the fine powder suspension should be continuously added to keep the polishing fabric at a certain humidity. Too much humidity will weaken the wear scar, so that the hard phase in the sample will appear embossed and the non-metallic inclusions in the steel and the graphite phase in the cast iron will produce a "tailing" phenomenon; if the humidity is too small, the sample will be generated due to frictional heat generation. The temperature rises, the lubrication is reduced, the surface is tarnished, and even dark spots appear, and the light alloy will throw the surface. In order to achieve the purpose of rough throwing, the rotating speed of the turntable is required to be low, preferably not exceeding 600r/min; the polishing time should be longer than the time required to remove the scratches, because the deformed layer is also removed. After rough polishing, the surface is smooth, but it is dull and dull. Under the microscope, there is a uniform and fine wear scar, which needs to be removed by fine polishing.
The speed of the turntable can be appropriately increased during fine polishing, and the polishing time is preferably to throw away the damage layer of the rough throw. After fine polishing, the polished surface is as bright as a mirror. No scratches can be seen under the bright field conditions of the microscope, but the wear marks are still visible under phase contrast lighting conditions. The polishing quality of the polishing machine seriously affects the structure of the sample, which has gradually attracted the attention of relevant experts. At home and abroad, a lot of research work has been done on the performance of the polishing machine. Many new models and a new generation of polishing equipment have been developed, which have been developed into various semi-automatic and fully automatic polishing machines from the original manual operation.
The performance and features of several commonly used mechanical polishing machines are described below. The polishing machine is specially designed for the surface treatment and treatment of steel, aluminum and copper metal products. Dozens of original accessories meet different needs, and it is easy to manufacture snow patterns, drawing patterns, wave patterns and matte with various precisions. Surface, mirror, etc., quick repair of deep scratches and slight scratches, rapid grinding and polishing; welds, nozzle marks, oxide film, stains and paints, suitable for deburring, rounding, decorative metal processing, It does not form shadows, transition zones and uneven decorative surfaces during processing, and is an important equipment for metal product production lines. Polishing machine is suitable for the following industries: wood, furniture industry such as flat wood, furniture metal handles and other workpiece sanding; hardware (metal) materials and products aluminum profiles and products, stainless steel products and utensils, copper profiles and products, plumbing and sanitary equipment , locks, lighting products, signage nameplates, hardware craft ornaments, knife and scissors, door flaps, car bicycle parts, tableware, shackle products, buttons, belt buckles, mobile phone casings, watch industry, etc. Light drawing; electronic parts, electronic equipment such as electronic parts, flat sanding and so on.
Automatic Polisher Notes
First, we must not use high-speed polishing machine if the following conditions are found
The operator has not received professional training.
The operator has not learned the "safe operating procedures".
The high speed polisher is not working properly.
Second, before using a high-speed polishing machine, the following checks should be made for the environment
The operator's hands and feet should be kept away from the rotating polishing head.
The operator must not step on the power cord or wrap the power cord around the polishing head.
The operator must dress safely.
The polished area must not exceed the length of the power cord.
The operator must not dispose of the operating handle. When the machine is stopped, the handle must be released after the high-speed polisher has completely stopped rotating.
Do not polish with a polishing pad that is dusty or dirty. When the polishing pad with too much dirt cannot be cleaned, replace it with time.
When replacing or installing the polishing pad, the power must be turned off.
Third, the storage of high-speed polishing machine
cut the power.
Tilt back and store the rear wheel on the ground.
Do not store outdoors and store in a dry place.
Polishing machine use steps and operating points
How to better use the operation of the polishing machine, in addition to the required steps, but also to master the relevant operating points, and effectively improve the polishing efficiency. Let me talk about the polishing machine using steps and operating points.
The steps of using the polishing machine are as follows:
1. Turn on the machine and unscrew the “Emergency Stop” button;
2. Adjust the sink card position to properly lock the sink, record the data of each card position, and take a picture of the position of the caliper (Note: align the water hole with the center of the turntable);
3. Number the program name and “reset” to the original position;
4. Adjust the depth of the grinding wheel, pay attention to adjust the lower limit position of the sensor and the screw position;
5, the existing data "data clear", press "debug stop", "debug start" light is on, debugging starts, the steps are as follows:
1 “Before the grinding wheel”, move the grinding wheel forward to the appropriate position; 2 “The workpiece is positive” to rotate the workpiece by a certain angle; 3 “After the grinding wheel”, the grinding wheel is moved back to the appropriate position, so that the grinding wheel is in close contact with the arc of the sink.
6. After the polishing machine is commissioned, “monitor” the data to check if abnormal data appears. If so, correct it;
7. After the correction is completed, press “Debug Start”, the debug start light is off, and the debugging is finished; “Tune to “Auto” block, then “Reset”, turn “Auto Start”, and try to throw the sink;
8. Check the polishing effect, make corrections, and complete the debugging.
Proper use of the polishing machine can improve the polishing efficiency, so pay attention to the following key points when using the polishing machine:
1. Automatic polishing machine polishing, grinding and polishing disc samples should be absolutely parallel and gently pressed on the polishing disc, taking care to prevent the sample from flying out, because the new mark causes pressure. At the same time, the sample should be rotated and moved back and forth along the radius of rotation to avoid excessive wear on the polishing fabric.
2. Polishing time should eliminate scratches longer than required because the deformed layer is removed at the same time.
3. Maintain proper humidity.
Humidity can wear and reduce polishing, humidity is too small, frictional heat will reduce sample temperature, lubrication, surface tarnish, and even light alloys reverse wounds.
4. In order to achieve the purpose of rough throwing, the rotation speed of the turntable is required to be low, and should not exceed 500r / min.