German eisenacher workholding fixtures eisenacher model eisenacher price

eisenacher workholding fixtures refer to devices used in the mechanical manufacturing process to secure the workpiece, ensuring it occupies the correct position for machining or inspection; they are also known as jigs. In a broad sense, any device used to quickly, conveniently, and safely install a workpiece during any step of the process can be called a fixture. Fixtures typically consist of locating elements (to determine the correct position of the workpiece in the fixture), clamping devices, tool-setting guide elements (to determine the relative position of the tool and workpiece or guide the tool direction), indexing devices (enabling the workpiece to complete processing at several stations in a single setup, including rotary indexing devices and linear indexing devices), connecting elements, and fixture bodies (fixture bases). Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures, among which machine tool fixtures are the most common and are often simply referred to as fixtures. When machining a workpiece on a machine tool, to ensure the surface meets the technical requirements specified in the drawing, such as dimensions, geometric shape, and mutual positional accuracy with other surfaces, the workpiece must be properly located (positioning) and securely clamped (clamping) before machining.

eisenacher workholding fixture classification

Due to the different operating characteristics and structural forms of various machine tools, different requirements are correspondingly placed on the structure of the fixtures used. According to the machine tool used, fixtures can be divided into: lathe fixtures, milling machine fixtures, drilling machine fixtures, boring machine fixtures, grinding machine fixtures, gear machine tool fixtures, and other machine tool fixtures. According to the clamping power source used, they can be divided into: manual fixtures, pneumatic fixtures, hydraulic fixtures, pneumatic-hydraulic fixtures, electric fixtures, magnetic fixtures, and vacuum fixtures. Specialized classifications include general-purpose fixtures, special-purpose fixtures, general-purpose adjustable fixtures, group fixtures, modular fixtures, and pallet fixtures. A pallet fixture is a type of fixture used on automated lines. This fixture not only serves to clamp the workpiece but also becomes integrated with the workpiece, moving from one station to the next along the automated line for processing different operations.

eisenacher workholding fixture features

1) Suction force: Electrically controlled powerful chucks have extremely strong holding force, up to 16kg/cm², with uniform and adjustable magnetic distribution, suitable for various heavy-duty machining, rough machining, and finish machining; ordinary powerful chucks have weaker and uneven suction force, unable to meet the requirements of heavy-duty machining operations. 2) Machining accuracy: The holding force of electrically controlled powerful chucks does not require a continuous power supply to maintain, generating no heat during continuous operation, 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 chucks can be used continuously, even for more than 20 hours per day, without any failures or need for maintenance; 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 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 high scrap rates and very low efficiency; electrically controlled powerful chucks feature automatic auxiliary positioning, completing workpiece clamping or release in just 0.3 seconds with the simple press of a button, significantly improving production efficiency.

eisenacher workholding fixture applications

1) Consistently ensures workpiece machining accuracy: When clamping a 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) Reduces auxiliary time and improves labor productivity: Using fixtures for workpiece clamping is convenient and fast, eliminating the need for marking and alignment, significantly reducing auxiliary time; clamping the workpiece in a fixture increases its rigidity, allowing for increased cutting parameters; fixtures capable of clamping multiple workpieces or multiple stations can be used, along with efficient clamping mechanisms, further improving labor productivity. 3) Expands the usage range of machine tools, achieving multi-functionality: By attaching different types of fixtures according to the forming motion of the machining machine tool, the original process range of the machine tool can be expanded. For example, installing a boring template on the carriage of a lathe or the table of a radial drilling machine allows for boring processing of box parts. 4) Ensures machining accuracy: Using fixtures for installation accurately determines the mutual position between the workpiece, machine tool, and 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) Improves productivity and reduces costs: Clamping workpieces with fixtures allows for rapid positioning and clamping without alignment, significantly reducing auxiliary time; clamping workpieces with fixtures increases workpiece rigidity, allowing for increased cutting parameters; multi-piece and multi-station fixtures can be used, along with efficient clamping mechanisms, all of which contribute to higher labor productivity. Additionally, using fixtures stabilizes product quality, reduces scrap rates, allows for the assignment of lower-skilled workers, and significantly lowers production costs. 6) Expands 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 a lathe or radial drilling machine, boring processing of hole systems in box parts can be performed; special-purpose fixtures can also convert a lathe into a broaching machine, fully leveraging the capabilities of general-purpose machine tools. 7) Reduces workers' labor intensity: Clamping workpieces with fixtures is convenient and fast. When using pneumatic, hydraulic, or other clamping devices, workers' labor intensity can be reduced.

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