German WERA tools WERA models WERA prices

WERA tools are tools that use electromagnetic technologies such as permanent magnets to assist in mechanical manufacturing processes. They can be divided into magnetic fixtures, magnetic tools, magnetic molds, magnetic auxiliary tools, etc. The use of magnetic tools can greatly improve production efficiency and reduce the labor intensity of employees. Some workpieces are inconvenient to clamp during machining and assembly due to their structural characteristics. It is only necessary to position the U shaped iron core vertically on the worktable for processing. At this time, we only need to embed a magnet in the positioning block of the fixture to firmly adsorb the workpiece on the worktable equipped with the positioning block, and achieve accurate positioning. This can greatly simplify the fixture structure and improve work efficiency. Some products require welding small parts onto the workpiece. If accurate positioning cannot be achieved, it is not only inconvenient to work, but also fails to meet requirements.

WERA tool principle

The principle of hydraulics consists of two hydraulic cylinders of different sizes, filled with water or oil. Those filled with water are called "water presses"; those filled with oil are called "oil presses". Each hydraulic cylinder has a sliding piston. If a certain pressure is applied to the small piston, according to Pascal's law, the small piston transmits this pressure through the liquid pressure to the large piston, pushing the large piston up. Let the cross-sectional area of the small piston be S1, and the downward pressure applied to the small piston be F1. Thus, the pressure exerted by the small piston on the liquid is P=F1/SI, which can be transmitted unchanged by the liquid in all directions." The pressure received by the large piston must also equal P. If the cross-sectional area of the large piston is S2, the upward force F2=PxS2 generated by the pressure P on the large piston is a multiple of the cross-sectional area of the small piston. From the above formula, applying a smaller force on the small piston will result in a larger force on the large piston. Therefore, hydraulic presses are used to press plywood, extract oil, lift heavy objects, forge steel, etc.

WERA tool parameters

The main performance parameters characterizing the basic working capacity of lifting tools are lifting capacity and working class. (1) Lifting capacity refers to the maximum weight of objects allowed to be lifted under specified working conditions, i.e., the rated lifting capacity. Generally, those equipped with permanent magnetic chucks (see permanent magnetic lifters) should include the weight of the permanent magnetic chuck in their lifting capacity. (2) Working class is a performance parameter reflecting the overall working status of lifting tools and is an important basis for designing and selecting lifting tools. It is determined by the total number of work cycles required to be completed during the required service period of the lifting tool and the load state. For lifting tools with strong regularity and high repeatability in operation procedures, such as electric hoists for loading and unloading ship cargo at docks, chain hoists for high-bay warehouses, and hopper lifts for supplying blast furnaces, the work cycle is also an important parameter. The work cycle refers to the time required to complete one work cycle, which depends on the operating speed of the mechanism and is related to the handling distance. The aforementioned lifting tools sometimes also use productivity as an important parameter, usually expressed in terms of the lifting volume completed per hour. In current use, efficiency is the first priority, followed by appearance and quality.

WERA tool operation

1) The single-phase power cord of mobile electric machinery and handheld power tools must use three-core soft rubber cable, and the three-phase power cord must use four-core rubber cable; when wiring, the cable sheath should pass into the junction box of the equipment and be fixed. 2) Before using power tools, the following items should be checked: no cracks or damage to the housing and handle, correct and firm connection of protective grounding or neutral wires, intact cables or flexible cords, intact plugs, normal, flexible and undamaged switches, intact electrical protection devices, intact mechanical protection devices, and flexible rotating parts. 3) The insulation resistance of power tools should be measured regularly using a megohmmeter of 500V. If the insulation resistance value between live parts and the housing does not reach 2MΩ, maintenance must be carried out. 4) After maintenance of the electrical parts of power tools, insulation resistance measurement and insulation withstand voltage tests must be performed. The test voltage is 380V, and the test time is 1 minutes. 5) The electrical circuits connecting electric machinery and tools should have separate switches or sockets, and residual current operated protective devices should be installed. The metal housing should be grounded; it is strictly prohibited to connect multiple devices to one switch. 6) The rated residual operating current of current-type residual current operated protective devices shall not exceed 30mA, and the operating time shall not exceed 0.1 seconds; the rated residual operating voltage of voltage-type residual current operated protective devices shall not exceed 36V. 7) The operating switch of electric motor tools should be placed within easy reach of the operator. When resting, getting off work, or in case of sudden power outage during work, the power side switch should be cut off. 8) When using portable or mobile power tools, insulated gloves must be worn or one must stand on an insulating mat; when moving tools, do not lift by the wire or the rotating part of the tool. 9) When using III class insulated power tools in damp or acid-containing areas and inside metal containers, reliable insulation measures must be taken and a dedicated person must supervise. The switch of the power tool should be placed within easy reach of the supervisor. 10) The disk plane of the magnetic chuck drill should be flat, clean, and rust-free. When performing side drilling or overhead drilling, measures should be taken to prevent the drill body from falling after power loss. 11) When using an electric wrench, the reaction torque support point should be securely leaned against, and the nut should be properly tightened before starting.

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