German BLEICHERT workpiece fixture BLEICHERT model BLEICHERT price

BLEICHERT 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 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.

BLEICHERT workpiece fixture applications

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

BLEICHERT workpiece fixture technology

An electromagnetic chuck consists of a base housing, iron core, coil, faceplate, and junction box. Its manufacturing process is as follows: 1) Select suitable materials to weld or cast the base housing. 2) Install the iron core onto the base housing according to the type of chuck. 3) Wind the coil with the corresponding number of turns and technical parameters, dry it, and fit it onto the iron core. 4) Pour asphalt or other waterproofing material into the interior of the base housing. 5) Fabricate the faceplate and install it together with the base housing. Electromagnetic chucks use DC power supply and feature stability, strong holding force, and low residual magnetism. Electromagnetic chucks can be classified into standard-holding chucks and high-power chucks. Standard-holding chucks have a holding force of 10-12 kg/cm², while high-power electromagnetic chucks have no less than 14 kg/cm². According to application, they can be divided into electromagnetic chucks for grinders, electromagnetic chucks for milling and planing machines, electromagnetic chucks for tool grinders, etc.

BLEICHERT workpiece fixture maintenance

When using vacuum suction cups (without grippers), note that the manipulator's movement speed must not be too high; otherwise, shear forces will develop on the suction cup, causing the product to drop easily during rapid twisting. In some cases, a gripper can be used to ensure safe transport of the product. Considering the possibility of the product sticking to the mold, an air gripper is usually installed to resolve this issue. When the product's surface area is too small or the product is too heavy for vacuum suction cups, the problem can also be resolved by using grippers. If the product has strict appearance requirements, the clamped area must not be the outer surface. To address this, a sensor circuit can be installed. After confirming that the gripper or suction cup has securely grasped the product, the sensor sends a signal to the manipulator to proceed with the next operation. In cases where the manipulator's motion capability is limited and manual twisting or prying is required to demold the product or move it out of the forming area, a special cylinder capable of independent movement, not relying on manipulator operation, can be added to improve this situation.

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