German JW Froehlich workholding fixtures, JW Froehlich models, JW Froehlich prices

JW Froehlich workholding fixtures are tools with specific functions connected to the robot edge (joint). This may include robot grippers, robot tool changers, robot collision sensors, robot rotary connectors, robot pressure tools, compliance devices, robot spray guns, robot deburring tools, robot arc welding torches, robot electric welding torches, etc. Robot end-effectors are generally considered peripheral equipment of the robot, robot accessories, robot tools, and arm-end tools (EOA). Key elements: mechanism type, gripping method, gripping force, drive unit and control object characteristics, mass, shape, center of gravity position, dimensions, dimensional tolerances, surface condition, material, strength; operating parameters: operating space environment, operating accuracy, operating speed and acceleration, clamping time.

JW Froehlich workholding fixtures introduction

Vacuum suction cups are one of the actuators for vacuum equipment. The suction cup material is made of nitrile rubber, which has high tensile strength, and is therefore widely used in various vacuum holding equipment, such as in construction, paper industry, printing, glass and other industries, to perform tasks of holding and transporting thin and light items such as glass and paper. Vacuum suction cups are also known as vacuum lifters and vacuum nozzles. Generally speaking, using vacuum suction cups to grab products is the most economical method. There are various types of vacuum suction cups. Rubber suction cups can operate at high temperatures. Suction cups made of silicone rubber are very suitable for grabbing products with rough surfaces. Suction cups made of polyurethane are very durable. In addition, in actual production, if oil resistance is required for the suction cup, materials such as polyurethane, nitrile rubber or vinyl-containing polymers can be considered for manufacturing the suction cup. 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.

JW Froehlich workholding fixtures features

1) Standardization: Standardization and generalization of machine tool fixtures are two interrelated aspects. China already has national standards for fixture parts and components: GB/T2148~T2259－91, as well as standards for various general-purpose fixtures and modular fixtures. Standardization of machine tool fixtures facilitates commercial production of fixtures, helps shorten production preparation cycles, and reduces total production costs. 2) Precision: As the precision of mechanical products continues to improve, the precision requirements for fixtures inevitably increase accordingly. There are many structural types of precision fixtures, such as multi-tooth discs for precision indexing, whose indexing precision can reach ±0.1"; and high-precision three-jaw self-centering chucks for precision turning, whose centering precision is 5μm. 3) High efficiency: High-efficiency fixtures are mainly used to reduce the basic time and auxiliary time of workpiece machining, thereby improving labor productivity and reducing workers' labor intensity. Common high-efficiency fixtures include automated fixtures, high-speed fixtures, and fixtures with clamping force devices. For example, using an electric vise on a milling machine to clamp workpieces can improve efficiency by about 5 times; using a high-speed three-jaw self-centering chuck on a lathe ensures that the jaws can still firmly clamp the workpiece at a test speed of 9000r/min, thereby significantly increasing the cutting speed. In addition to configuring corresponding high-efficiency and automated fixtures in production lines and automatic lines, various fixtures for automatic workpiece clamping and devices for automatic fixture changing have appeared on CNC machine tools, especially machining centers, fully leveraging the efficiency of CNC machine tools. 4) Flexibility: The flexibility of machine tool fixtures is similar to that of machine tools. It refers to the ability of machine tool fixtures to adapt to variable process factors through adjustment, combination, etc. The main variable process factors include: process characteristics, production batch size, workpiece shape and dimensions, etc. New types of fixtures with flexibility characteristics mainly include: modular fixtures, general-purpose adjustable fixtures, group fixtures, modular fixtures, and CNC fixtures. To meet the needs of modern mechanical industry for multi-variety and small-to-medium batch production, expanding the degree of flexibility of fixtures, changing the non-detachable structure of special-purpose fixtures to a detachable structure, and developing adjustable fixture structures will be the main direction of current fixture development.

JW Froehlich workholding fixtures applications

1) Can stably ensure the machining precision of workpieces: When clamping workpieces with fixtures, the positional precision 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 precision of a batch of workpieces consistent. 2) Can reduce auxiliary man-hours and improve labor productivity: Using fixtures to clamp workpieces is convenient and fast. Workpieces do not need scribing and alignment, which can significantly reduce auxiliary man-hours. After clamping in the fixture, the rigidity of the workpiece is improved, allowing for increased cutting amounts. Fixtures for clamping multiple workpieces or multi-station workpieces can be used, and high-efficiency 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 template on the slide board of a lathe or the worktable of a radial drilling machine allows for boring processing of box-type parts. 4) Ensure machining precision: Using fixtures for installation can accurately determine the mutual position between the workpiece, machine tool, and tool. The positional precision of the workpiece is guaranteed by the fixture, unaffected by the worker's skill level, resulting in high and stable machining precision. 5) Improve productivity and reduce costs: Clamping workpieces with fixtures allows for rapid positioning and clamping without alignment, significantly reducing auxiliary man-hours. Clamping workpieces with fixtures improves workpiece rigidity, allowing for increased cutting amounts. Multi-piece and multi-station fixtures can be used to clamp workpieces, and high-efficiency 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, and workers with lower technical grades can be assigned, significantly reducing production costs. 6) Expand the process range of machine tools: Using special-purpose fixtures can change the original purpose of the machine tool and expand its usage range, achieving multi-functionality. For example, after installing boring template fixtures on lathes or radial drilling machines, boring processing of box hole systems can be performed. Through special-purpose fixtures, lathes can also be converted for use as broaching machines, fully leveraging 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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