German BIMA tools BIMA models BIMA prices

BIMA tools are devices that 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 equipment. The use of magnetic tools can significantly improve production efficiency and reduce the labor intensity of employees. For some workpieces, clamping is inconvenient during machining and assembly due to their structural characteristics. By simply positioning the U-shaped iron core vertically on the worktable for processing, we only need to embed a magnet in the locating block of the fixture to firmly hold the workpiece onto the worktable equipped with the locating block, ensuring accurate positioning. 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 inconvenient but also fails to meet requirements.

BIMA 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 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 the large piston. 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 fluid is P=F1/SI, which can be transmitted unchanged in all directions by 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 formula, applying a smaller force to the small piston results in a larger force on the large piston. Therefore, hydraulic presses are used for pressing plywood, extracting oil, lifting heavy objects, forging steel, etc.

BIMA tool parameters

The main performance parameters characterizing the basic working capability of lifting tools are lifting capacity and work class. (1) Lifting capacity refers to the maximum weight of the load allowed to be lifted under specified working conditions, i.e., the rated lifting capacity. Generally, if equipped with a permanent magnetic chuck (see permanent magnetic lifter), its lifting capacity should also include the weight of the permanent magnetic chuck. (2) Work 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 bucket elevators 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 usage, efficiency is the primary consideration, followed by appearance and quality.

BIMA tool usage

1) When placing the diamond dressing tool head into the holder, be careful 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, the interval between two dressings must be sufficient 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 amount of material removed from the grinding wheel each time should not exceed 0.001 inches on the radius. 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 a day. 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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