bel-art fixtures Germany bel-art models bel-art prices

bel-art fixtures are devices used on machine tools to clamp workpieces and guide cutting tools. They refer to fixtures specifically designed for a particular operation on a specific workpiece. Their characteristics include compact structure, rapid, convenient, and labor-saving operation, ensuring high machining accuracy and production efficiency. However, the design and manufacturing cycle is long, and manufacturing costs are high. When the product changes, the fixture becomes obsolete and is scrapped due to inability to reuse. It is only suitable for production with fixed products and large batch sizes. It contacts the positioning datum of the workpiece to determine the correct position of the workpiece in the fixture, thereby ensuring the correct relative position of the workpiece with respect to the cutting tool and the machining motion of the machine tool during processing. It typically consists of positioning elements, clamping devices, tool-setting and guiding elements or devices, etc.

bel-art fixture operating principle

The most widely used grippers are pneumatic grippers; they are essentially cylinders powered by compressed air. When air is supplied, the gripper jaws approach and firmly grasp the object to enable subsequent operations, and when the airflow direction is reversed, the gripper releases the object. Typical applications include changing the orientation of an object or moving it during pick-and-place operations. When a gripper holds a workpiece, there must be appropriate force constraints and form constraints to ensure that the clamped workpiece is fully released during movement, dwell, and loading. In addition, it must ensure that the geometric deviation of the workpiece holding posture remains within the specified tolerance zone.

bel-art fixture principles and features

The structure of a flat vacuum suction cup consists of the suction cup and the suction cup holder. The flat vacuum suction cup is first connected via a pipe joint to vacuum equipment such as a vacuum generator, then brought into contact with the object to be lifted, such as glass or paper. The vacuum equipment is started to create negative pressure inside the suction cup, firmly holding the object, allowing transport to begin. When the object reaches its destination, air is gently introduced into the vacuum suction cup, changing the internal pressure from negative to zero or slightly positive, causing the suction cup to detach from the object, thus completing the lifting and transporting task. 1) High wear. Since it is generally made of rubber and directly contacts objects, it suffers severe wear and deteriorates quickly. It is a pneumatic wearing part. This is why it stands out significantly among many pneumatic components. 2) Easy to use. Regardless of the material of the object being sucked, as long as it can seal and not leak air, it can be used. Electromagnetic chucks cannot do this; they can only be used on steel, and cannot suck plates or objects made of other materials. 3) No pollution. Vacuum suction cups are particularly environmentally friendly, do not pollute the environment, and produce no light, heat, or electromagnetic effects. 4) Does not damage the workpiece. Since vacuum suction cups are made of rubber, picking up or placing down the workpiece causes no damage to the workpiece. Hook-type and cable-type lifting gear cannot do this. In some industries, where surface requirements for workpieces are particularly strict, only vacuum suction cups can be used.

bel-art fixture maintenance

1) Before use, check whether the limit dimensions remain in the correct position. 2) If stop pins are worn beyond tolerance, they can be ground and repaired; if baffles, pins, or positioning taper pins are worn beyond tolerance, they can be reassembled, shifting the worn areas to continue use. 3) After use, anti-rust oil must be applied. Regular long-term lubrication maintains the life of synchronous fixtures; incorrect lubrication leads to reduced clamping force, poor accuracy, wear, and seizing, so correct lubrication is essential. After machining, be sure to clean the body and slide ways of the synchronous fixture using an air gun or similar tool. During cleaning, remove the dust cover fixing screws and take off the dust cover, while extending the main jaws to their widest position to easily clean accumulated chips inside the fixture. To avoid reduced clamping force due to rust, use rust-preventive cutting oil. Every six months, remove the synchronous fixture for thorough cleaning (at least every two months when machining cast iron or copper parts). Check parts for damage or wear, and replace with new items immediately if severe. Lubricate thoroughly before assembly.

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