German Caporali workpiece fixtures Caporali model Caporali price

Caporali workpiece 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 a 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 machine tool's machining motion during processing. It typically consists of positioning elements, clamping devices, tool-setting and guiding elements or devices, etc.

Caporali workpiece fixture applications

Whether it is a simple hydraulic clamping fixture or a complex integrated production line, the design process for hydraulic clamping fixtures follows the same sequence: formulation of the overall scheme, selection of hydraulic cylinder type and specifications, selection of control valves, design of mechanical components, selection of pump station accessories, and system connection. Hydraulic clamping fixtures provide powerful clamping and positioning forces for various machining processes. Yun Dongli hydraulic cylinders are used for positioning and clamping in automated machining processes. Products such as self-centering vises and self-centering clamping elements ensure accurate positioning; swing cylinders and lever cylinders provide clamping force on the workpiece; support cylinders prevent deformation during machining. From simple fixturing to robot-assisted machining centers, hydraulic cylinders provide clamping and support forces to enhance production efficiency.

Caporali workpiece fixture features

1) Suction cup holding force: Electrically controlled powerful suction chucks have extremely strong holding force, up to 16kg/cm², with uniform and adjustable magnetic field distribution, suitable for various heavy-duty machining, roughing, and finishing operations; ordinary powerful suction chucks have weaker and unevenly distributed holding force, unable to meet the requirements of heavy-duty machining operations. 2) Machining accuracy: The holding force of electrically controlled powerful suction chucks does not require a continuous power supply to maintain; continuous operation generates no heat, avoiding thermal deformation of the workpiece. Meanwhile, the strong and uniform surface suction ensures the highest machining accuracy even if the workpiece extends beyond the table surface; whereas ordinary electromagnetic chucks require a continuous current supply, generating heat after a period of operation, which not only causes thermal deformation of the workpiece but also reduces the chuck's magnetic force, failing to guarantee machining accuracy. 3) Performance: Electrically controlled powerful suction chucks can be used continuously; even with daily continuous operation for over 20 hours, no failures occur, and no maintenance is required; ordinary permanent magnet chucks show a decline in suction force after about half a year of use, while electromagnetic chucks can only operate for a few hours a day, are prone to malfunction, and require frequent replacement and repair of internal components. 4) Operational efficiency: Using ordinary powerful suction chucks requires significant workpiece adjustment time, accounting for 40%-50% of the entire machining process, and clamping positioning is prone to obvious errors, resulting in a high scrap rate and very low efficiency; electrically controlled powerful suction chucks feature automatic auxiliary positioning, completing workpiece clamping or release in just 0.3 seconds with the press of a button, significantly improving production efficiency.

Caporali workpiece fixture selection

When selecting pneumatic grippers and jaw designs, these are the main factors to consider: 1) Part shape, orientation, and dimensional variations: If the object has two opposing flat surfaces, a parallel two-jaw gripper can be used to address dimensional deviations. For cylindrical objects, a two-jaw gripper can also be used for clamping. Note that containment or enveloping gripping requires less force. 2) Part weight: The clamping force must be sufficient to hold the object securely during the required operations. The type of jaw design must be considered when calculating the required clamping 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 constraints of the gripper jaws. If external operations are to be performed on the object, internal clamping is required. Scissor-style 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 releases its hold on the object, causing it to drop. For such applications, spring-assisted grippers can be used.

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