High precision CNC centerless grinder FX-20S

High precision CNC centerless grinder FX-20SMaintenance Method
1. For the maintenance of high-precision CNC centerless grinding machine surface: The surface of high-precision CNC centerless grinding machine, motor, and heat dissipation equipment must be kept clean, and polishing consumables powder should be cleaned regularly.
2. Check and tighten the handle, feed handwheel, screws, nuts, and other components. Keep the machine tool in good condition.
3. High precision CNC centerless grinder machine inspection: Check the screws, belts, and tightness of each part of the high-precision CNC centerless grinder. Loose parts should be adjusted to the appropriate level.
4. Check the wear level of each bearing and replace any damaged ones to ensure sufficient lubricating oil.
5. The guide rail should be cleaned thoroughly, and there should be no polishing consumables powder on the guide rail.
6. Electrical appliances: Regularly clean the motor and electrical box. The electrical devices are fixed neatly and operate reliably.
7. Check and tighten the zero connection device. High precision CNC centerless grinder inspection button switch. If there is a problem, it should be replaced immediately to avoid unnecessary danger
High precision CNC centerless grinding machinePrecautions for use:
1. Before replacing the spare module, it is necessary to carefully check whether the spare board is intact and whether the setting status of the spare board is the same as that of the original board. This includes checking whether the position of the selection switch and short-circuit bar on the printed circuit board is the same as that of the original board.
2. When replacing the motherboard or memory board of a high-precision CNC centerless grinder system, it is important to note that sometimes after replacing a new module, the system needs to be initialized, and data and programs need to be input again before the system can work.
High precision CNC centerless grinding machine accuracy:
(1) Machine Tool Accuracy Inspection Form
(2) After being ground by a high-precision CNC centerless grinder, the following standard precision requirements need to be met: (different grinding wheels are used for workpieces of different materials)
High precision CNC centerless grinder FX-20SEquipment Description:
1. Body
The body and components are made of high-quality cast iron FC30 from Mihanna, which is cast in one go and subjected to manual normalization heat treatment, followed by natural aging treatment for more than 1 year. The components are processed using world-class equipment such as YASDA, MITSUI SEIKI, TOSHIBA, ELB, etc., with precision dimensions up to the micrometer level, ensuring high precision of the equipment foundation components.
2. Spindle system
The spindle is made of SNCM-21H alloy steel, which undergoes quenching and tempering, carburizing heat treatment, and then computer-controlled cryogenic treatment. Its surface hardness reaches HRC-62 ° or above, and the effective hardening layer on one side reaches 1.5mm or more. The FX-12S spindle adopts a dynamic pressure oil film spindle.
3. Adjust the wheel drive system
The adjusting wheel spindle drive motor adopts Taiwan, China's YAS KAWA Servo Motor. The FX-12S speed is controlled by 0~320rpm CNC and adjusted to the appropriate linear speed. When the outer diameter of the adjusting wheel changes, the same linear speed can still be maintained, ensuring the precision and smoothness of the processed workpiece and grinding out high-quality products.
The servo motor is ingeniously designed and installed on the adjustment wheel box, and is directly driven by a synchronous belt. It can tilt at the same time as the adjustment wheel during grinding, ensuring that the two pulleys are always parallel. This overcomes the inertia loss and many adverse effects caused by the chain multi section transmission of the old high-precision CNC centerless grinder, and avoids frequent replacement of the chain and zipper spring.
4. Spindle circulating oil system
The main spindle automatic lubrication circulating oil (advanced spindle oil 10 #) is the same oil pump as the oil pressure trimming device, with an external oil tank for easy cleaning and oil change. The main spindle circulating oil is filtered by a dual circuit device and equipped with a pressure controller to ensure the service life of the main spindle.
High precision CNC centerless grinding machineRepair of main shaft and bearing shell:
1. Repair of the spindle
When the wear amount of the worn spindle is small and does not exceed the thickness of the nitride layer, the high-precision CNC centerless grinder can directly repair the working surface to restore the spindle accuracy and surface roughness; In addition, when there is significant wear, the chrome plating process can be used to restore the original size. After precision grinding and calendering treatment, the dimensional accuracy and surface roughness can be ensured. The trimming of the center hole at the shaft end is often overlooked, and grinding the center holes at both ends of the spindle is an important process related to repairing the spindle accuracy. When repairing the center hole of the spindle on the grinder, one hand should pinch the spindle and the other hand should gently adjust the tailstock handwheel. The spindle should be held loosely and tightly to achieve uniform grinding of the center hole. After the grinding of one end of the center hole is completed, the other end is ground again. After multiple repeated corrections such as grinding, measurement, and re grinding, the spindle's working surfaces meet the required technical standards.
2. Repair of bearing shells
During the scraping and grinding process of the coarse scraping bearing, shallow scraping technology is used, and the lower blade is very light. Firstly, use the spindle as the reference for rough scraping, and scrape out the contact points first. The points should be evenly distributed, with points between 14-16 points/25mm2. Scratching the knife marks should be done in a cross pattern, so that the dots are evenly distributed.
The repair of the main components of high-precision CNC centerless grinding machines is generally carried out in the following order, or several components can be simultaneously or cross checked according to the repair conditions.