The present invention is directed to a horizontal band saw machine capable of efficiently severing H-beams without a trouble of saw blade's pinching in the kerf. In the horizontal band saw machine, a saw blade (21) can sever one of flanges 20a that has been cut first in an H-beam (20), completely from top to bottom, prior to approaching the center of a web 20b and its vicinity.
B23D 53/04 - Machines or devices for sawing with strap saw blades which are effectively endless in use, e.g. for contour cutting with the wheels carrying the strap mounted shiftably or swingingly, other than merely for adjustment
B23D 53/08 - Machines or devices for sawing with strap saw blades which are effectively endless in use, e.g. for contour cutting for cutting profiled stock
B23D 55/08 - Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for guiding or feeding strap saw blades
B23D 59/00 - Accessories specially designed for sawing machines or sawing devices
Under a state in which a long material (structural steel (A)) is sandwiched by pinch rollers (drive roller (21) and idle rollers (22)) of a pinch roller apparatus (20), the drive roller (21) is driven to rotate, and the structural steel (A) is conveyed forward. When a rear end portion of the structural steel (A) reaches a vicinity of the pinch roller apparatus (20), the rear end portion of the structural steel (A) is held by a holding portion (32) provided at a front end portion of a feed bar (36) of a feed bar device (30), and the feed bar (36) is caused to slide toward a working machine. Consequently, the structural steel (A) is conveyed forward through the pinch roller apparatus (20) and is positioned.
B23Q 7/05 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of roller-ways
09 - Scientific and electric apparatus and instruments
Goods & Services
Machine tools and precision machine tools including robots, especially machines for cutting including torch cutting, laser cutting and plasma cutting and machines for sawing including band sawing and machines for drilling, milling and facing, scaling, bevelling, bending, punching and welding machines and apparatuses and parts of these machines. Computers and control devices including those with CAD input devices for controlling of machine tools and robots and parts thereof like memory devices, sensors, printed circuits, cables, motors; software for controlling of machine tools and robots; sensors.
A hybrid heat treatment device is used to temper a workpiece (W) and has a horizontal conveyor (20) extended to pass through a furnace (2) and conveying the workpiece (W), a temperature raising zone (40) placed in the furnace (2) and having far-infrared heaters (46) for quickly raising the temperature of the workpiece (W) up to its tempering temperature, and a keep-warm zone (42) placed adjacent to the temperature raising zone (40) on its downstream side and maintaining the workpiece (W) at the tempering temperature. The keep-warm zone (42) has a warm air outlet duct (62) placed below the conveyor (20) and blowing warm air to the workpiece (W), and also has a warm air suction duct (66) placed above the conveyor (20) and sucking warm air in the keep-warm zone (42).
C21D 1/18 - HardeningQuenching with or without subsequent tempering
F27B 9/10 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and chargeFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity electrically heated heated by hot air or gas
