German Lagra workholding fixtures Lagra model Lagra price

Lagra workholding fixtures are one of the actuators for vacuum equipment. Generally, using vacuum suction cups to grip products is the most economical method. Vacuum suction cups come in various types; rubber suction cups can operate at high temperatures, silicone rubber suction cups are very suitable for gripping products with rough surfaces, and polyurethane suction cups are highly durable. In addition, in actual production, if oil resistance is required for the suction cups, materials such as polyurethane, nitrile rubber, or vinyl-containing polymers can be considered for manufacturing them. Usually, to avoid scratching the surface of the product, it is best to choose suction cups with bellows made of nitrile rubber or silicone rubber. The suction cup material is made of nitrile rubber, which has high tensile strength, and is therefore widely used in various vacuum holding devices.

Lagra workholding fixture applications

Whether it is a simple hydraulic fixture or a complex integrated production line, the design process for hydraulic fixtures is the same, proceeding in the following order: 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, and support cylinders prevent deformation during product machining. From simple fixing to robot-assisted machining centers, cylinders provide clamping and support forces to improve production efficiency.

Lagra workholding fixture structure

The mechanical gripper-type end effectors used in loading and unloading industrial robots are mostly two-finger claw types. According to the motion of the fingers, they can be divided into translational and rotational types. According to the mechanical clamping method, they can be divided into external clamping and internal expansion types. According to the mechanical structural characteristics, they can be classified as electric (electromagnetic), hydraulic, and pneumatic types, as well as their combinations. When the end effector clamps the workpiece, there should be certain force constraints and shape constraints to ensure that the clamped workpiece is completely released during movement, dwelling, and loading processes. In addition, it should ensure that the geometric deviation of the workpiece clamping posture reproduction is within the given tolerance zone.

Lagra workholding fixture applications

1) Can stably ensure the machining accuracy of the workpiece: When clamping the workpiece with a fixture, the positional accuracy of the workpiece relative to the tool and machine tool is guaranteed by the fixture, unaffected by the worker's skill level, making the machining accuracy of a batch of workpieces consistent. 2) Can reduce auxiliary time and improve labor productivity: Using fixtures to clamp workpieces is convenient and fast; workpieces do not need scribing and alignment, significantly reducing auxiliary time; after the workpiece is clamped in the fixture, the rigidity of the workpiece is improved, allowing for increased cutting amounts; fixtures for clamping multiple workpieces and multi-station workpieces can be used, and efficient clamping mechanisms can be adopted to further improve labor productivity. 3) Can expand the usage range of machine tools and achieve multi-functionality: According to the forming motion of the machining machine tool, attaching different types of fixtures can expand the original process range of the machine tool. For example, installing a boring jig on the carriage of a lathe or the worktable of a radial drilling machine allows for boring processing of box parts. 4) Ensure machining accuracy: Using fixture installation can accurately determine the mutual position between the workpiece and the machine tool/tool; the positional accuracy of the workpiece is guaranteed by the fixture, unaffected by the worker's skill level, resulting in high and stable machining accuracy. 5) Improve productivity and reduce costs: Clamping workpieces with fixtures allows for rapid positioning and clamping without alignment, significantly reducing auxiliary time; clamping workpieces with fixtures improves workpiece rigidity, thus allowing for increased cutting amounts; multi-piece and multi-station fixtures can be used to clamp workpieces, and efficient clamping mechanisms can be adopted; these factors are all conducive to improving labor productivity. In addition, after adopting fixtures, product quality is stable, scrap rate decreases, workers with lower technical grades can be assigned, significantly reducing production costs. 6) Expand the process range of machine tools: Using special fixtures can change the original purpose of the machine tool and expand its usage range, achieving multi-functionality. For example, after installing boring jig fixtures on lathes or radial drilling machines, boring processing can be performed on box hole systems; through special fixtures, lathes can also be converted for use as broaching machines to fully utilize the role of general-purpose machine tools. 7) Reduce workers' labor intensity: Clamping workpieces with fixtures is convenient and fast; when using pneumatic, hydraulic, and other clamping devices, workers' labor intensity can be reduced.

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