Metal band saw machine (English name, Metal band saw machine) is mainly used for sawing low alloy steel, high alloy steel, special alloy steel and stainless steel;
According to the structure, it is divided into horizontal metal band sawing machine, vertical metal band sawing machine, horizontal type is divided into scissors type, double column, single column type band sawing machine;
According to the usage, it is divided into manual type (economical manual feeding and manual cutting of materials) and automatic type;
According to the automation program of the controller, it can be divided into manual type (semi-automatic manual feeding) and fully automatic type (automatic feeding and automatic cutting);
According to the cutting angle requirements, it can be divided into angle sawing machine (can saw the angle of 90 degrees 45 degrees) without angle, that is, 90 degrees vertical cutting.
The most advanced band saw in China is a hydraulic double-column band saw. It is welcomed by domestic and foreign processing factories for its fast speed and high efficiency.
Its main features are:
1. Cutting speed hydraulic control, stepless speed regulation
2. The structure of the guide block is scientific and reasonable, which prolongs the service life of the saw blade
3. Double column structure, stable operation
4. Stable sawing and high precision
5. The working clamping adopts hydraulic clamping, which is easy to operate
6. Three-way hydraulic clamping device can be customized
The main components of the double-column horizontal metal band sawing machine are: bottom seat; bed, column; saw beam and transmission mechanism; guiding device; workpiece clamping; tensioning device; feeding frame; hydraulic transmission system; electrical control system; lubrication and cooling system.
The hydraulic transmission system consists of a hydraulic circuit composed of pumps, valves, cylinders, tanks, pipelines and other auxiliary parts. The lifting of the saw beam and the clamping of the workpiece are completed under electrical control. Through the speed control valve, the stepless speed regulation of the feed speed can be implemented to meet the needs of sawing workpieces of different materials.
The electrical control system consists of a control loop composed of an electrical box, a control box, a junction box, a travel switch, an electromagnet, etc., used to control the rotation of the saw blade, the lifting of the saw beam, the clamping of the workpiece, etc., to make it follow a certain working procedure Realize the normal cutting cycle.
The lubrication system must be lubricated according to the lubrication parts of the machine tool (wire brush shaft, worm gear box, active bearing seat, worm bearing, upper and lower shaft of the lifting cylinder, and clamping screw on the sliding surface of the movable vise) before starting the lubrication system. The worm gear and worm in the worm gear box are lubricated by a No. 30 oil bath, which is injected from the oil plug hole in the upper part of the worm gear box. The box surface is equipped with an oil mark. When the saw beam is at the lowest position, the oil level should be at the upper and lower limits of the oil mark. between. The oil should be changed after a month of trial use, and then every 3-6 months. The lower part of the worm gear box is equipped with an oil drain plug.
Safe operation regulations
1. The operation and maintenance personnel of the band sawing machine must be professionally trained to master the operation and maintenance skills of the band sawing machine. Operators should ensure adequate sleep and maintain concentration.
2. When changing the speed, you must stop before opening the protective cover, turn the handle to relax the belt, place the V-belt in the groove of the required speed, then tension the belt and cover the protective cover.
3. The adjustment of the chip removal wire brush should make the wire contact the tooth of the band saw blade, but not beyond the root of the tooth. Pay attention to whether the wire brush can remove the iron filings.
4. Adjust the guide arm along the dovetail rail according to the size of the workpiece to be processed. After the adjustment, the guide device must be locked.
5. The maximum diameter of the saw material must not exceed the regulations, and the workpiece must be clamped firmly.
6. Band saw blade tightness should be proper, speed and feed must be proper.
7. Cast iron, copper and aluminum parts do not need cutting fluid, and other cutting fluids are required.
8. The saw blade breaks during cutting. After replacing the saw blade, the workpiece must be turned over and sawed again. The saw bow should be lowered slowly without impact.
9. During the cutting process, the operator is strictly forbidden to leave the post, and to operate with gloves is strictly prohibited.
10. At the end of each shift, you must cut off the power supply, open the protective cover, remove the chips brought into the saw wheel, and do a good job of daily maintenance and surrounding cleaning.