German FERMA tools FERMA models FERMA prices

FERMA tools are any tools connected to the robot edge (joint) with specific functions. This may include robot grippers, robot tool changers, robot collision sensors, robot rotary connectors, robot pressure tools, compliance devices, robot spray guns, robot deburring tools, robot arc welding torches, robot electric welding torches, etc. Robot end effectors are generally considered peripheral equipment of the robot, robot accessories, robot tools, and arm-end tools (EOA). Mechanical clamping end effectors used in loading and unloading industrial robots are mostly two-finger claw types. If classified by finger motion, they can be divided into translational and rotational types. If classified by mechanical clamping method, they can be divided into external clamping and internal expansion types. If classified by mechanical structural characteristics, they can be divided into electric (electromagnetic), hydraulic, and pneumatic types, as well as their combinations.

FERMA tool types

1) Frame saw. Also known as a rack saw, it consists of an I-shaped wooden frame, twisted rope and twist pieces, saw blade, etc. The two ends of the saw blade are fixed to the frame with knobs, which can be used to adjust the angle of the saw blade. After the twisted rope is tightened, the saw blade is taut and ready for use. Frame saws can be divided into coarse, medium, and fine types according to the length of the saw blade and tooth pitch. Coarse saw blades are 650—750mm long, with a tooth pitch of 4—5mm; coarse saws are mainly used for sawing thicker wood. Medium saw blades are 550—650mm long, with a tooth pitch of 3—4mm; medium saws are mainly used for sawing 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 sawing finer wood and cutting tenon shoulders. 2) Knife saw. The knife saw mainly consists of two parts: the saw blade and the saw handle. It can be divided into single-sided, double-sided, and back-backed knife saws. Single-sided knife saws are 350mm long, with teeth on one side. According to the function of the teeth, they can be divided into rip cuts and cross cuts. Double-sided knife saws are 300mm long, with teeth on both sides. The teeth on both sides are generally rip cuts on one side and cross cuts on the other. Back-backed knife saw plates are 250—300mm long. The back of the back-backed knife saw is straightened with steel strips, and the teeth are finer, divided into rip cuts and cross cuts. 3) Groove saw. The groove saw consists of a handle and a saw blade, with the saw 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, with the saw blade being approximately 250—750mm long and a tooth pitch of 3—4mm. Panel saws are mainly used for sawing wider wooden boards. 5) Narrow hand saw. The saw blade is narrow and long, with a pointed front end, approximately 300—400mm in length. Narrow hand saws are mainly used for sawing narrow holes and slots. 6) Keyhole saw. Also known as a compass saw, its structure is the same as that of a frame saw, but the saw blade is narrower (about 10mm), mainly used for sawing arcs, curves, and other parts. 7) Wire saw. Also known as a bow saw, it is made by bending a bamboo strip into a bow shape and stretching steel wire at both ends. Saw-toothed flying edges are chiseled onto the steel wire, using the sharp edges of the flying edges for sawing. The steel wire is approximately 200—600mm long, and the saw bow is 800—900mm long. Wire saws are mainly used for sawing complex curves and cutting holes.

FERMA tool structure composition

The cross-sectional shape and distribution of the magnetic core vary depending on the workpiece. Common structures of electromagnetic chucks include rectangular and circular shapes. Rectangular magnetic poles are divided into longitudinal and horizontal arrangements. Longitudinal arrangement of rectangular magnetic poles is suitable for fixing larger workpieces; horizontal arrangement of rectangular magnetic poles is suitable for fixing smaller workpieces. Circular chucks are suitable for fixing ring-shaped workpieces or workpieces with complex shapes. The main characteristics of ordinary electromagnetic chucks are: magnetic lines of force are evenly distributed on the surface of the magnetic disk, electromagnetic suction cannot be concentrated, and the magnetic force per unit area is relatively small; the direction of magnetic force is perpendicular to the chuck surface and difficult to change, producing only one type of magnetic force for workpieces of the same suction area; the point of action of magnetic force on the workpiece is limited to the contact surface between the workpiece and the chuck and cannot be changed arbitrarily. Therefore, during processing, there are disadvantages such as low positioning accuracy, insufficient clamping force, narrow scope of application, and low production efficiency.

FERMA tool usage

1) Before use, carefully inspect it. The appearance should be undamaged, the switch should operate flexibly without jamming, and the power cord and housing of the power tool should be intact. Use a 500V megohmmeter to measure the insulation resistance between the winding and the housing, which must not be less than O.5 megohms. See the attached table for insulation resistance values. 2) Handheld power tools with metal housings must have a reliable protective grounding wire. The power cord is a multi-core soft rubber sheathed cable, and its grounding protection wire must be securely connected at both ends. 3) Handheld power tools should be used by dedicated personnel with certain professional knowledge. Strictly adhere to relevant safety operating procedures during use. 4) Before use, first check whether the relevant electrical protection devices and mechanical protection devices are intact. Their operation should be normal. Also pay attention to whether the rotating parts rotate flexibly without jamming. 5) When using Class I handheld power tools, users must wear protective equipment that complies with regulations and set up qualified protective gear. Take corresponding anti-electric shock safety measures as required, such as installing residual current devices in the power circuit, or having the user wear insulating gloves, insulating shoes, or stand on an insulating mat. When using Class II handheld power tools in damp and narrow places, install a residual current circuit breaker with an operating current of less than 1.5mA and an operating time of less than or equal to 0.1 seconds. The residual current circuit breaker should be placed inside the container and supervised by dedicated personnel. 6) Occupational hazards of using handheld power tools. Arm vibration disease caused by long-term hand-transmitted vibration operations was listed as one of China's statutory occupational diseases as early as 1957, also known as local vibration disease, typically manifested as episodic white finger.

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