German preisser tools preisser models preisser prices

preisser tools are made of copper alloy. Due to copper's good thermal conductivity and its characteristic of being almost carbon-free, the heat generated in a short time when the tool rubs against or impacts an object is absorbed and conducted. Another reason is that copper itself is relatively soft, providing good compliance during friction and impact, making it difficult to produce tiny metal particles. As a result, we hardly see any sparks, so explosion-proof tools are also called non-sparking tools. The materials for explosion-proof tools are beryllium bronze and aluminum bronze. Beryllium bronze alloys and aluminum bronze alloys do not spark upon impact or friction, making them very suitable for manufacturing safety tools used in explosive, flammable, strong magnetic, and corrosive environments. BeA-20C alloy withstands an impact energy of 561IJ in hydrogen containing 30% or in methane-air-oxygen mixtures containing 6.5-10%, and after 20 impacts, no sparks or combustion occurred.

preisser tool types

1) Frame saw. Also known as a buck saw, it consists of an H-shaped wooden frame, twisted rope and twist pieces, and a saw blade. Both ends of the saw blade are fixed to the frame with knobs, which can be used to adjust the angle of the blade. After the rope is tightened, the blade is taut and ready for use. Frame saws can be divided into coarse, medium, and fine types based on blade length and tooth pitch. Coarse saw blades are 650—750mm long, with a tooth pitch of 4—5mm; coarse saws are mainly used for cutting thicker wood. Medium saw blades are 550—650mm long, with a tooth pitch of 3—4mm; medium saws are mainly used for cutting thin wood or cutting tenons. Fine saw blades are 450—500mm long, with a tooth pitch of 2—3mm; fine saws are mainly used for cutting finer wood and cutting tenon shoulders. 2) Knife saw. A knife saw mainly consists of two parts: the cutting edge and the handle. It can be divided into single-sided, double-sided, and backed knife saws. Single-sided knife saws have a blade length of 350mm, with teeth on one side. Depending on the function of the teeth, they can be divided into rip cuts and cross cuts. Double-sided knife saws have a blade length of 300mm, with teeth on both sides; generally, one side is for rip cutting and the other for cross cutting. Backed knife saws have a blade plate length of 250—300mm. The back of the backed knife saw is straightened with a steel strip, and the teeth are finer, available as rip or cross cut saws. 3) Groove saw. A groove saw consists of a handle and a saw blade, with the blade being approximately 200mm long. Groove saws are mainly used for cutting grooves in wood. 4) Panel saw. Also known as a hand saw, it consists of a handle and a saw blade. The blade is approximately 250—750mm long, with a tooth pitch of 3—4mm. Panel saws are mainly used for cutting wider wooden boards. 5) Narrow hand saw. The blade is narrow and long, with a pointed front end, and a length of approximately 300—400mm. Narrow hand saws are mainly used for cutting narrow holes and slots. 6) Coping saw. Also known as a fret saw, its construction is the same as that of a frame saw, but the blade is narrower (approximately 10mm). It is mainly used for cutting arcs, curves, and other similar shapes. 7) Wire saw. Also known as a bow saw, it is made by bending a bamboo strip into a bow shape and stretching a steel wire between the two ends. Saw-tooth-like flying edges are chiseled onto the steel wire, using the sharp edges of these flying edges for cutting. The steel wire is approximately 200—600mm long, and the saw bow is 800—900mm long. Wire saws are mainly used for cutting complex curves and opening holes.

preisser tool structure and composition

The function of power components is to convert the mechanical energy of the prime mover into the pressure energy of the liquid. This refers to the oil pump in the hydraulic system, which provides power to the entire hydraulic system. The structural forms of hydraulic pumps generally include gear pumps, vane pumps, and piston pumps. The function of actuating components (such as hydraulic cylinders and hydraulic motors) is to convert the pressure energy of the liquid into mechanical energy, driving the load to perform linear reciprocating motion or rotary motion. Control components (i.e., various hydraulic valves) control and regulate the pressure, flow, and direction of the liquid in the hydraulic system. According to different control functions, hydraulic valves can be divided into pressure control valves, flow control valves, and directional control valves. Pressure control valves are further divided into relief valves (safety valves), reducing valves, sequence valves, pressure relays, etc.; flow control valves include throttle valves, adjustment valves, flow divider-combiner valves, etc.; directional control valves include check valves, pilot-operated check valves, shuttle valves, directional valves, etc. According to different control methods, hydraulic valves can be divided into on/off control valves, fixed-value control valves, and proportional control valves. Auxiliary components include oil tanks, oil filters, oil pipes and pipe joints, sealing rings, pressure gauges, oil level and oil temperature gauges, etc. Hydraulic oil is the working medium that transmits energy in the hydraulic system, including various mineral oils, emulsions, and synthetic hydraulic oils.

preisser tool features

The electrically controlled powerful chuck has extremely strong holding force, up to 16kg/cm², with uniform and adjustable magnetic distribution. It is suitable for various heavy-duty machining, rough machining, and precision machining. Ordinary powerful chucks have weaker and unevenly distributed holding force, unable to meet the requirements of heavy-duty machining operations. The holding force of an electrically controlled powerful chuck does not require a continuous power connection to maintain. It generates no heat during continuous operation, avoiding thermal deformation of the workpiece. At the same time, the strong and uniform surface suction ensures the highest machining precision even if the workpiece extends beyond the table surface. In contrast, ordinary electromagnetic chucks require a continuous supply of current to maintain magnetic force, generating heat after a period of operation. This not only causes thermal deformation of the workpiece but also reduces the magnetic force of the chuck, failing to guarantee machining precision. Electrically controlled powerful chucks can be used continuously; even if operated continuously for more than 20 hours per day, no faults will occur, and no maintenance is required. Ordinary permanent magnet chucks will show a decline in suction force after about half a year of use, while electromagnetic chucks can only operate for a few hours a day. Furthermore, the equipment is prone to failure, requiring frequent replacement and repair of internal components. Using ordinary powerful chucks requires a significant amount of workpiece adjustment time, accounting for 40%-50% of the entire machining process. Moreover, clamping and positioning are prone to obvious errors, resulting in a high scrap rate and very low efficiency. Electrically controlled powerful chucks have an automatic auxiliary positioning function. Simply pressing a button completes the clamping or release of the workpiece in 0.3 seconds, greatly improving production efficiency.

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