In garden tools, the chain saw accessories we generally refer to include crankshafts, chainsaw chains, pistons, air filters, cylinders, crankcases, mufflers, high pressure packages, magnetic flywheels, etc. The chain saw chain is a closed chain with saw teeth riveted between the saw tooth blade, the transmission chain blade, the connecting blade and the chain shaft. As the chain saw chain works for a period of time, the tooth edge becomes blunt and the cutting efficiency is reduced. Therefore, the chain should be frequently For filing, the chain that meets the standard should generally be filed every 4 hours, and the chain with poor quality should be filed frequently. The quality of filing has a great influence on the service life of the chain, the normal use of the chain saw and the productivity of sawing wood.
When filing, the angle standard is difficult to grasp. Generally, it can be measured by a triangle ruler. It is better if there is an angle gauge. Generally, experienced chain saws master the appropriate angle according to the size of the sawtooth climbing edge, and quickly improve the quality of the chain by mastering the law of chain sawing. The tooth height of the saw tooth is related to the service life of the chain, so when filing the chain, do not file hard, just file a thin layer of metal, especially when the back edge is climbing, do not file frequently or file hard, otherwise it will cause the tooth The high and the shifting amount are rapidly reduced, and the chain saw chain will soon be scrapped. If you want to make the tooth height, material width and climbing edge of the saw chain are filed well, you must first try the filed saw chain. After sawing the wood, if it is found to be uneven, you need to file again to find it.
The file of the chain saw chain can be filed by hand with a file, or filed with a file saw machine. In order to reduce manpower consumption and improve the efficiency and quality of filing chains, it is necessary to widely promote the use of filing and sawing machinery. Commonly used manual files mainly include plate files, knife files and round files. Plate files and knife files are commonly used files for filing straight-tooth chains. Round files are mainly used for filing universal chains. The gear bins of straight-tooth chains are best used. A round file is used to dig it, but a triangular file is not commonly used. When filing, hold the file firmly, hold the wrist hard, and look at the saw tip. Before filing and sawing, first place the file on the saw teeth, push up diagonally from the bottom of the gear bin, and do not lift the file back to avoid damage to the file. The slope of the file should be the same. The file surface should be changed at any time to avoid overheating. And damage the file. Generally, in order to ensure the quality of the filing of the chain saw chain, some chain saws are provided with various special tools when they are on sale, such as the "chain inspection gauge" attached to the Crepu chain saw, which can be used to test the limited number of teeth and level. The blade height difference and the various angle elements of the saw tooth can also be used to clean the saw board groove and lubricating oil hole by using the tip of the difficult chain gauge.
In addition to rasping the chain, check the tension of the chain frequently. Compared with the chain that has been in use for a long time, the new saw chain needs to be tightened more frequently. Generally in the cold state, the chain is engaged on the lower side of the guide plate but can still be pulled along the guide plate by hand, indicating that the tension is correct. After reaching the operating temperature, the chain expands and begins to relax, and the transmission link on the lower side of the guide plate is not allowed to come out of the guide groove, otherwise the chain will fall off. Tighten the chain again if necessary. When the temperature is lowered, the chain will shrink. At this time, the chain should be loosened, otherwise the crankshaft and the bearing will be damaged. The chain is an important part of the chain saw for garden machinery. It is very important to take the maintenance of the chain seriously for the overall performance of the chain saw.