German hufnagel workpiece fixtures hufnagel model hufnagel price

hufnagel workpiece fixtures are one of the actuators for vacuum equipment. Generally, using vacuum suction cups to grasp 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 grasping products with rough surfaces, and polyurethane suction cups are highly 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. 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.

hufnagel workpiece fixture structure

1) Locating elements: These contact the locating datum of the workpiece to determine the correct position of the workpiece in the fixture, thereby ensuring the correct relative position between the workpiece and the tool and machine tool movements during machining. 2) Clamping device: Used to clamp the workpiece, keeping it in the predetermined position in the fixture during cutting. As shown in Figure 6-1, such as nut 5 and open washer. 3) Tool-setting and guiding elements or devices: The function of these elements is to ensure the correct position between the workpiece and the tool. Elements used to determine the correct position of the tool before machining are called tool-setting elements, such as tool-setting blocks. Elements used to determine the tool position and guide the tool during machining are called guiding elements. 4) Connecting elements: Elements that connect the fixture to the machine tool, ensuring the mutual positional relationship between the machine tool and the fixture. 5) Fixture body: The base component used to connect or fix various elements and devices on the fixture into a single unit. It connects and aligns with relevant parts of the machine tool, giving the fixture a definite position relative to the machine tool. 6) Other elements and devices: Some fixtures require indexing mechanisms according to the machining requirements of the workpiece, and milling machine fixtures also require locating keys, etc. Not all of these components are indispensable for every type of machine tool fixture, but any fixture must have locating elements and clamping devices. They are key to ensuring the machining accuracy of the workpiece, with the purpose of accurately positioning and firmly clamping the workpiece.

hufnagel workpiece fixture principles and features

The structure of a flat vacuum suction cup consists of the suction cup and the suction cup holder. The flat vacuum suction cup first connects the vacuum suction cup to vacuum equipment (such as a vacuum generator) via a pipe, then contacts the object to be lifted (such as glass, paper, etc.). The vacuum equipment is started to create negative pressure inside the suction cup, firmly holding the object, allowing the transport of the object to begin. When the object is transported to the destination, air is smoothly injected into the vacuum suction cup, changing the internal pressure from negative to zero or slightly positive, causing the suction cup to release the object, thus completing the task of lifting and transporting heavy objects. 1) High wear. Since it is generally made of rubber and directly contacts objects, it suffers from severe wear and tear, leading to rapid consumption. It is a pneumatic wearable part. Precisely because of this, it stands out significantly among many pneumatic components. 2) Easy to use. Regardless of the material of the object being sucked, as long as it can be sealed without air leakage, it can be used. Electromagnetic chucks cannot do this; they can only be used on steel, and cannot suck plates or objects made of other materials. 3) No pollution. Vacuum suction cups are particularly environmentally friendly, do not pollute the environment, and do not generate light, heat, or electromagnetic fields. 4) Does not damage the workpiece. Since vacuum suction cups are made of rubber material, picking up or placing down the workpiece will not cause any damage to it. Hook-type and cable-type lifting gear cannot achieve this. In some industries, where surface requirements for workpieces are particularly strict, only vacuum suction cups can be used.

hufnagel workpiece fixture classification

1) Base components: Such as square, rectangular, and circular base plates, used as fixture tooling tables. All five working surfaces of the table have grid-marked holes. The flatness, parallelism, and perpendicularity tolerances of these five surfaces, 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. The dimensions of the base table can be chosen arbitrarily, and special sizes can be customized. If high precision is required after combining tables, guide rails can be used to connect them. 2) Support components: Including U type square boxes, L type square boxes, support angle irons, angle connection blocks, angle gauges, frame support seats, etc.; used for height positioning or platform expansion, and for positioning or clamping other accessories. These are elements positioned on the platform to ensure the workpiece reaches a certain height requirement during machining, such as shims, spacer plates, support plates, support blocks, and extension plates, mainly used for support at different heights. 3) Locating components: Including locating squares, locating straight edges, planar squares, V type locating components, eccentric circle stops, used for accurate adjustment of positioning position or height. These are elements for precise positioning of the workpiece to ensure it meets certain dimensional accuracy requirements during machining; used to determine the relative positions between elements, and between elements and the workpiece. 4) Adjustment components: Including: height adjusters, adjustment shims; Purpose: Elements used for adjusting the positional difference and gap between elements and the workpiece. 5) Clamping components: Including: 90° spiral clamps, horizontal spiral clamps, 45° spiral clamps, vertical quick-action clamps, horizontal push-type quick-action clamps; Purpose: Elements used to clamp the workpiece onto the platform or base components to ensure it does not shift 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, external hex locking pins, magnetic pins; Purpose: Elements used for positioning and locking between components. 7) Assembly components: Including: 90 degree clamping corner sleeves, 45 degree clamping corner sleeves, parallel clamping corner sleeves, vertical clamping corner sleeves, standard support legs, swivel caster support legs with brakes, fixed support legs, frame structure support seats, hydraulic lift support seats, support rails; Purpose: Elements acting on the connection or support between components 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 protection plates, tool trolleys; Purpose: Auxiliary components for the assembly of tooling elements. 9) Assembly tools: Including hex keys, oil stones, magnetic pliers, and other assembly tools.

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