German halder workpiece fixtures halder model halder price

halder workpiece fixtures use hydraulic components to replace mechanical parts, achieving automatic positioning, support, and clamping of the workpiece through hydraulic control. They offer advantages such as high clamping force, reliable clamping, stable operation, and ease of use, and are currently widely used in scenarios such as CNC machine tools, machining centers, and automated production lines. By assembling selected hydraulic components with designed mechanical parts, the required fixture can be obtained. Hydraulic fixtures ensure accurate positioning and secure clamping of the workpiece at specified locations, reduce vibration and deformation during machining through floating supports, and utilize automatic control of pressure plate clamping and lifting to clear the clamping position during machining. Hydraulic fixtures can withstand large cutting forces during rough machining, ensure accurate positioning during precision machining, and perform support, clamping, and quick release tasks that manual fixtures cannot accomplish.

halder workpiece fixture classification

1) Lathe fixtures: Fixtures used on lathes to machine internal and external rotary surfaces and end faces of workpieces are called lathe fixtures. Most lathe fixtures are mounted on the spindle, while a minority are installed on the saddle or bed. 2) Coordinate measuring machine fixtures: Used on measuring machines, utilizing modular support and reference devices to achieve flexible fixation of the measured workpiece. This device allows for automatic programming to support the workpiece and establish an unlimited number of workpiece configuration reference points. Advanced dedicated software can directly generate workpiece clamping programs within seconds using the workpiece's geometric data. 3) Industrial robot fixtures: All mounted on industrial robots for use in industrial automation equipment, representing one of the new technologies in modern industrial automation. They mainly appear in modern industrial production in coordination with robots, with common applications including machine tool loading/unloading, workpiece palletizing/depalletizing, welding, and grinding in automated unmanned factories. 4) Milling machine fixtures: All mounted on the milling machine table, moving with the table feed motion. They mainly consist of positioning devices, clamping devices, fixture bodies, connecting elements, and tool-setting elements. During milling, cutting forces are large and cutting is intermittent, resulting in significant vibration; therefore, milling machine fixtures require high clamping force, stiffness, and strength. 5) Bearing housing fixtures: To ensure and improve the production quality of bearing housings, in addition to machine tools and other mechanical equipment, a large amount of process equipment is used, including bearing housing fixtures, molds, cutting tools, and related auxiliary tools. Bearing housing fixtures are specialized production tools designed to ensure product quality, making the bearing housing production process more convenient. Different bearing housing fixtures vary in structure, form, operating conditions, and design principles, resulting in a wide variety of types and styles, accounting for a significant proportion in both quantity and variety. These fixtures accurately determine the relative position between the workpiece and tools, allowing the workpiece to be clamped to perform the necessary motions during machining. Since bearing housing fixtures play a crucial role in the production process, drawing their design diagrams is also very important.

halder workpiece fixture features

Workpieces produced in small batches with high variety account for approximately 85% of the total number of workpiece types. Modern production requires companies to frequently update product varieties to meet market demands and competition. However, general enterprises still tend to extensively use traditional special-purpose fixtures. In factories with medium production capacity, there are typically thousands to nearly ten thousand sets of special-purpose fixtures. On the other hand, in enterprises with high-variety production, approximately 50~80% of special-purpose fixtures need to be updated every 3~4 years, while the actual wear of the fixtures is only about 10~20%. To meet the application of new machining technologies such as CNC machine tools, machining centers, group technology, and Flexible Manufacturing Systems (FMS), machine tool fixtures have the following characteristics: 1) Enable rapid and convenient setup for new product production, shortening production preparation cycles and reducing production costs; 2) Capable of clamping a group of workpieces with similar characteristics; 3) Suitable for high-precision machine tool fixtures for precision machining; 4) Suitable for new types of machine tool fixtures for various modern manufacturing technologies; 5) Adopt efficient clamping devices powered by hydraulic stations and other sources to further reduce labor intensity and improve labor productivity; 6) Improve the standardization level of machine tool fixtures. This is mainly reflected in four aspects: standardization, precision, efficiency, and flexibility.

halder workpiece fixture classification

1) Base components: Such as square, rectangular, and circular base plates, used as fixture tooling tables. The five working faces of the table feature grid-marked holes. The flatness, parallelism, and perpendicularity tolerances of these five faces, as well as the positional accuracy of the holes, are very high, ensuring sufficient accuracy for positioning on the table and combination with other modules. Base table dimensions can be chosen arbitrarily, and special sizes can be custom-made. If high precision is required after combining tables, guide rails can be used to connect them. 2) Support components: Including U type square blocks, L type square blocks, support angle irons, angular connecting blocks, angle gauges, frame support seats, etc.; used for height positioning or platform expansion, and for positioning or clamping other accessories. Components such as shims, spacer plates, support plates, support blocks, and extension plates are positioned on the platform to ensure the workpiece reaches a certain height requirement during machining, primarily serving as supports at different heights. 3) Positioning components: Including positioning squares, positioning straight edges, planar angle squares, V type positioning components, and eccentric circle stops; used to accurately adjust positioning location or height. These components ensure the workpiece meets specific dimensional accuracy requirements during machining by precisely positioning the workpiece, determining the relative positions between components and between components and the workpiece. 4) Adjustment components: Including height adjusters and adjustment shims; used to adjust positional gaps between components and the workpiece. 5) Clamping components: Including 90° spiral clamps, horizontal spiral clamps, 45° spiral clamps, vertical quick-action clamps, and horizontal push-type quick-action clamps; used to clamp the workpiece onto the platform or base components to prevent displacement during machining. 6) Locking components: Including quick-locking pins, countersunk quick-locking pins, countersunk locking pins, handle quick-locking pins, locating pins, magnetic connection locking pins, hex socket locking pins, hex head locking pins, and magnetic pins; used to ensure positioning and locking between components. 7) Assembly components: Including 90 degree clamping angle sleeves, 45 degree clamping angle sleeves, parallel clamping angle sleeves, vertical clamping angle sleeves, standard support legs, swivel caster support legs with brakes, fixed support legs, frame structure support seats, hydraulic lift support seats, and support rails; used for connecting or supporting elements and other parts. 8) Other components: Including retaining rings, grounding devices, spiral clamps, pipe clamps, lifting rings, cross-slot pressure pads, two-point clamping bridges, three-point clamping bridges, multi-purpose support templates, platform protective plates, and tool carts; used as accessory components for tooling assembly. 9) Assembly tools: Including hex keys, oil stones, magnetic pliers, and other assembly tools.

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