BT-150E cutter and tool grinding machine commonly used are angular contact ball bearings, which can subject to radial and axial loads at the same time. The load is determined by the contact angle. The larger the contact angle, the higher the axial load capacity. The contact angle is 15 °, 25 °, 40 ° three. The spacer-type angular bearings are used in pairs, the adjustment should fine and serious, and there must some maintenance experience.
Use of Cutter and tool grinding machine
(1) It is used in the textile spinning industry, thick yarn machine, draw frame machine, combing machine, texturing machine, and other top roller processing.
(2) It is used in the manufacturing and manufacturing of office communication equipment industry. Copiers, printers, cutting plotters, and other rubber rollers.
(3) Applicable to the printing, food, pharmaceutical industry automatic conveying device, the top roller, plastic processing.
Adjustment method OF Cutter and tool grinding machine
(1) Measurement method. This method is more accurate and needs to be measured, but the operation is cumbersome. Therefore, it is only used by special manufacturers. In the maintenance work of equipment, maintenance personnel is rarely used because the conditions are not available.
(2) Feeling method. This method does not require a measuring instrument. And only relies on practical experience to determine the thickness of the inner and outer spacers. And thus is widely used in equipment maintenance.
1. Use both hands' thumbs and forefinger to press the two bearings to eliminate all the gaps. The middle finger extends into the inner hole of the bearing to move the inner spacer. It feels that the resistance is consistent with the outer space.
2. One hand eliminates all the gaps of the two bearings with two fingers and presses them tightly. The fingers of the other hand move the inner and outer spacers, and the resistance is consistent.
3. Put the pair of two bearings in accordance with the assembly method and the inner and outer spacers. Add a weight corresponding to the preload in the upper part, and then push the inner spacer through the three equally divided holes that have been drilled beforehand. The outer ring resistance should same, otherwise, the spacer should ground until the resistance of the inner and outer rings is consistent.
common faults and troubleshooting methods. When the tool grinder grinds the outer circle, the surface of the workpiece has a vibrating flaky pattern. A twill pattern and the outer cylindrical grinding machine grinds the outer circle. When the high-speed end faces a cylindrical grinding machine grinds the outer circle, the surface of the workpiece has a problem of vibration lines. The main causes of the problem:
(1) The contact surface of the diamond knife holder is not well contacted;
(2) The gap between the spindles of the grinding wheel frame is large and bad;
(3) When grinding, the parameters of the head frame speed and the dressing speed of the grinding wheel are not properly selected;
(4) The model of the selected grinding wheel does not match the material of the workpiece being machined.
Common faults in tool grinding machines
1. The static balance of the grinding wheel is poor.
2. The hardness of the grinding wheel is too high or the viscosity of the grinding wheel is uneven. The grinding wheel becomes dull, and the frictional force with the workpiece increases. So that the periodic vibration of the workpiece increases.
3. The grinding wheel main shaft wears, and the large main shaft has floated in the rotation. Which causes the grinding wheel to be unbalanced and generate vibration.
4. The taper hole of the grinding wheel flange is in poor contact with the tapered end of the grinding wheel spindle. Causing the grinding wheel to jump when grinding.
5. The grinding wheel motor vibration, the transmission belt is too tight, loose or long and inconsistent to produce vibration.
6. The wheel carriage motor balance is poor.
7. The center hole of the workpiece is in poor contact with the tip.
8. The top of the workpiece is not suitable. If the workpiece is too tight, the workpiece will rotate unevenly. If it is too loose, the rigidity of the system will reduce.
Problem-solving method OF Tool grinding
(1) When BT-150E cutter and tool grinding machine scraping the diamond knife holder again, the combination is good. After tightening, use the watch to measure the head of the diamond knife. When moving, it should not exceed 0.01mm. Whether the diamond knife is sharp or not.
(2) The clearance of the main shaft of the static and dynamic pressure grinding wheel frame should within the specified range. At the same time, it should consider that static pressure is generally controlled. Whether the dynamic pressure is established, and the injection of each hole.
