German HARTIG tools HARTIG models HARTIG prices

HARTIG tools utilize electromagnetic technologies such as permanent magnets to assist in mechanical manufacturing processes. They can be categorized into magnetic fixtures, magnetic tools, magnetic molds, and magnetic auxiliary devices. The use of magnetic tools can significantly improve production efficiency and reduce the physical workload of employees. For some workpieces, clamping is inconvenient during machining and assembly due to their structural characteristics. Simply position the U-shaped iron core vertically on the worktable for processing. By embedding a magnet in the locating block of the fixture, the workpiece can be firmly attracted to the worktable equipped with the locating block and accurately positioned. This greatly simplifies the fixture structure and improves work efficiency. Some products require welding small parts onto the workpiece; if accurate positioning is not achieved, it not only makes the work difficult but also fails to meet requirements.

HARTIG tool principles

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 cylinder contains 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 fluid pressure to the large piston, lifting it. Let the cross-sectional area of the small piston be S1, and the downward force applied to the small piston be F1. Thus, the pressure exerted by the small piston on the fluid is P=F1/SI, which can be transmitted unchanged in all directions through the fluid. 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 generated by the pressure P on the large piston is PxS2, which is a multiple of the small piston's cross-sectional area. From the above equation, applying a small force to the small piston results in a large force on the large piston. Therefore, hydraulic presses are used for pressing plywood, extracting oil, lifting heavy objects, and forging steel.

HARTIG tool parameters

The main performance parameters characterizing the basic working capability of lifting tools are lifting capacity and working class. (1) Lifting capacity refers to the maximum weight of loads allowed to be lifted under specified working conditions, i.e., the rated lifting capacity. Generally, if equipped with a permanent magnetic chuck (see permanent magnet lifter), the lifting capacity should also include the weight of the permanent magnetic chuck. (2) Working class is a performance parameter reflecting the overall working status of the lifting tool 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 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 as the lifting volume completed per hour. In current usage, efficiency is the primary consideration, followed by appearance and quality.

HARTIG tool usage

1) When placing the diamond dressing tool head into the holder, take care not to impact the grinding wheel surface. 2) Do not align the single-point diamond dressing tool head vertically with the center of the grinding wheel; generally, it needs to be tilted 10-15°. 3) Do not "quench" (i.e., sudden cooling) a heated dressing tool. During dry dressing, sufficient interval time between two dressings must be maintained to allow the heated dressing tool to cool. 4) Do not assume the grinding wheel surface has ideal flatness. At the start of dressing, locate the high points on the grinding wheel and perform dressing. 5) If possible, the removal amount per dressing on the grinding wheel radius should not exceed 0.001 inches. Excessive removal can cause premature wear and frequent breakage of the diamond dressing tool head. 6) However, do not remove too little material each time. Grinding wheels used on old or poorly rigid machine tools may not require dressing. 7) Note that the dressing tool should not remain in one position for too long. This will polish the grinding wheel surface, generate high temperatures, and damage the diamond dressing tool. Rotate the dressing tool at least once daily. 8) Do not continue to use worn or damaged dressing tools. Adjust or replace them promptly. 9) Do not select excessive removal amounts and too fast lateral feed rates during rough dressing, and then select small removal amounts and slow lateral feed rates during fine dressing. This will quickly damage the diamond dressing tool. If possible, it is recommended to select the same lateral feed rate for both rough and fine dressing.

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