First, the use of universal milling machine
Universal milling machine is a general-purpose metal cutting machine tool. The spindle taper hole of this machine tool can be installed with various cylindrical milling cutters, wafer milling cutters, forming milling cutters, end milling cutters and other tools directly or through accessories. holes, gears, etc. It is an ideal processing equipment for machinery manufacturing, molds, instruments, meters, automobiles, motorcycles and other industries.
Second, the structure and characteristics of the universal milling machine
The universal milling machine consists of the body, the main drive, the feed box, the lifting table, the worktable, the cantilever beam, the cooling , lubrication and electrical components. The fuselage consists of a base and a bed, and the bed is fixed on the base; the main drive is installed in the bed, and the speed of the main shaft is adjusted through the three speed change handles on the right cover of the bed; the feed box is equipped with a hanging on the right side of the slide , through the output shaft gear and the sliding gear, the power is transmitted to the vertical and horizontal screws respectively; the lift table and the bed are matched by dovetail guide rails, and vertically lift along the bed guide rail; the lift table and the sliding seat are matched by a rectangular guide rail, and the worktable and the The seat is matched by the dovetail guide rail, and the lead screw and the nut drive the worktable to move vertically and horizontally; the suspension beam part is composed of a fixed seat, a ram and a hanger. Suspended at one end of the ram; the coolant is stored in the inner cavity of the base; the main transmission part is lubricated by a lubricating oil pump, the feed box is lubricated by oil-immersed splash lubrication, and the rest of the moving parts are lubricated by a hand-pulled oil pump or an oil cup at fixed points; electrical The box is hidden in the bed, and the electrical control operation is respectively adverbial lift on the left side of the bed, on the right side of the bed or supported by the cantilever bracket in front of the left side of the foundation, which is easy to operate.
Three.Universal milling machineOperation procedures
1. Wear tight protective clothing before operation , The cuffs are fastened, the hem of the jacket cannot be opened, it is strictly forbidden to wear gloves, and it is not allowed to wear, take off or change clothes next to the running machine tool, or wrap it around the body to prevent the machine from being strangled. A safety helmet must be worn, the braids should be placed in the cap, and skirts and slippers are not allowed. Wear protective goggles: to prevent eye damage from splashing iron filings, and install baffles around the machine to isolate it from the operating area.
2. Before the workpiece is clamped, the clamping method should be formulated. When clamping blanks, the table should be well padded to avoid damage to the table.
3. When the table moves, check that the fastening screws should be opened, and the fastening screws should be tightened when the table does not move.
4. When loading and unloading the tool, the taper part and taper hole of the milling cutter should be kept clean, and the clamping should be firm. Protective goggles must be worn during high-speed cutting. The workbench is not allowed to stack tools, parts, etc., pay attention to the distance between the tool and the workpiece to prevent collision accidents.
5. Before installing the milling cutter, check whether the cutter is correct and in good condition. The milling cutter should be installed as close to the main shaft as possible, and it should be tested after installation. The installation workpiece should be firm.
6. When working, you should feed by hand first, and then automatically move the knife gradually. When running automatic tool feed, pull open the handwheel, pay attention to whether the limit stop is firm, do not put it on the head, and do not go to the two extremes to break the lead screw; In order to avoid damage to the parts, the milling cutter shatters and flies out and hurts people. Always check whether the safety spring in the hand crank is effective and reliable.
7. It is forbidden to touch the blade and processing parts by hand when cutting. The measurement and inspection of the workpiece must be stopped, and the workpiece is not allowed to be adjusted during cutting.
8. Before the spindle stops, the tool feed must be stopped. If the cutting depth is large, the tool should be stopped first when retracting, the power supply must be cut off when hanging the wheel, the clearance between the hanging wheel should be appropriate, and the back mother of the hanging wheel frame should be tightened to avoid falling off; The amount of cutting and feeding.
9. If the machine tool is found to be faulty, it should immediately stop for inspection and report to the construction and security department to send a mechanic to repair it. After the work is completed, the cleaning work should be done and the power should be turned off.
