German otto bitzer workpiece fixtures, otto bitzer models, otto bitzer prices

otto bitzer workpiece fixtures are devices that hold objects for manipulation. They can grip and release objects while performing certain actions. Motion devices often mimic human movements; in the case of grippers, they mimic finger movements. The "fingers" themselves are not part of the gripper; they are specialized custom tools for holding objects, called "jaws." Two main gripping actions: External gripping: This is the most common method for holding objects. It is the simplest and requires the shortest stroke length. When the gripper jaws close, the clamping force applied by the gripper holds the object. Internal gripping: In some applications, due to the geometry of the object or the need to access the exterior of the object, it is necessary to grip the object from the center. In this case, the gripper holds the object through expansion force.

otto bitzer workpiece fixture classification

Fixture types can be classified by usage characteristics as follows: (1) Universal general-purpose fixtures. Such as machine vises, chucks, suction cups, indexing heads, and rotary tables, which have high versatility and can adapt well to changes in machining processes and workpieces. Their structures are standardized, with dimensions and specifications serialized, and most have become standard accessories for machine tools. (2) Specialized fixtures. Designed and manufactured specifically for the clamping needs of a certain product part in a specific process, with a single service object and strong specificity, generally designed by the product manufacturer. Common examples include lathe fixtures, milling fixtures, drill jigs (machine tools used to guide drills or reamers on workpieces), boring jigs (machine tools used to guide boring bars on workpieces), and pallet fixtures (movable fixtures used on automated lines for modular machine tools). (3) Adjustable fixtures. Specialized fixtures with replaceable or adjustable elements. (4) Modular fixtures. Fixtures composed of standardized elements of different shapes, specifications, and uses, suitable for new product prototyping, single-piece and small-batch production with frequent product changes, and temporary tasks. Besides vises, chucks, indexing heads, and rotary tables, there is a more common type called tool holders. Generally speaking, when the term tool fixture appears, it mostly refers to tool holders.

otto bitzer workpiece fixture principles and features

The structure of a flat vacuum suction cup consists of the suction cup and the suction cup clamp. A flat vacuum suction cup is first connected to vacuum equipment, such as a vacuum generator, via a pipe joint, and 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, securely holding the object so that transport can 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, allowing the suction cup to release the object, thus completing the lifting and transport task. 1) High wear. Since it is generally made of rubber and directly contacts objects, it experiences severe abrasion and wears out quickly. It is a pneumatic wearable part. For this reason, it stands out significantly among many pneumatic components. 2) Easy to use. Regardless of the material of the object being sucked, it can be used as long as a seal is formed without air leakage. Electromagnetic suction cups cannot do this; they can only be used on steel materials and cannot lift 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 emissions. 4) Does not damage the workpiece. Because vacuum suction cups are made of rubber, picking up or placing down the workpiece causes no damage to it. Hook-type and steel cable lifting gear cannot achieve this. In some industries, where surface requirements for workpieces are particularly strict, only vacuum suction cups can be used.

otto bitzer workpiece fixture selection

When selecting pneumatic grippers and jaw designs, these are the main factors to consider: 1) Part shape, orientation, and dimensional differences: If the object has two opposing flat surfaces, a double-jaw parallel gripper can be used, which solves dimensional deviation issues. For cylindrical objects, a double-jaw gripper can also be used for holding. Note that retaining or encompassing gripping requires less force. 2) Part weight: The gripping force must be sufficient to hold the object steady while performing the required operations. The type of jaw design must be considered when calculating the required gripping force. Please note that safety factors should be considered when selecting the required force, and air pressure is also a factor to note. 3) Accessibility: This relates both to the operation being performed and the spatial size of the gripper jaws. If work needs to be done on the exterior of the object, internal gripping is required. Scissor-type grippers are usually cheaper but require more space for jaw movement. 4) Environment: Grippers used in harsh environments or cleanrooms require corresponding designs. 5) Object retention: When air pressure is no longer supplied, the gripper will release its hold on the object, and the object will drop. For such applications, spring-assisted grippers can be used.

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