Germany fwt gmbh workpiece fixture fwt gmbh model fwt gmbh price

fwt gmbh workpiece fixture is a machine tool accessory product manufactured based on the electromagnetic principle. It generates magnetic force by energizing internal coils, tightly holding workpieces in contact with the surface of a magnetically conductive panel. Demagnetization and workpiece removal are achieved by de-energizing the coils to eliminate the magnetic force. Main applications include workpiece clamping during the machining of ferrous workpieces on grinding machines, electromagnetic knife grinders, gantry milling machines, and gantry planers. Lifting screw holes are located on both sides of the rectangular electromagnetic chuck; T-shaped screws can be screwed in for lifting during installation. It is fixed to the workbench using T-shaped blocks and screws. Connect the DC power supply and ground wire from the machine tool, then precision grind the upper surface of the chuck once to ensure the parallelism between the upper surface and the bottom surface. When holding workpieces, sufficient positioning suction force is obtained by bridging two adjacent magnetic poles, allowing grinding operations to proceed. Magnetization and demagnetization of the workpiece can be controlled via the machine tool buttons.

fwt gmbh workpiece fixture operating principle

The most widely used grippers are pneumatic grippers; they are essentially cylinders powered by compressed air. When air is supplied, the gripper jaws approach and firmly hold the object to perform other operations. When the air direction is reversed, the gripper releases the object. Typical applications include changing object orientation or moving objects during pick-and-place operations. When the gripper holds a workpiece, there must be certain force and shape constraints to ensure that the clamped workpiece is fully released during movement, dwelling, and loading. Additionally, it must ensure that the geometric deviation of the workpiece holding posture remains within the specified tolerance zone.

fwt gmbh workpiece fixture features

Workpiece varieties for small-batch, high-mix production account for approximately 85% of the total number of workpiece types. Modern production requires companies to frequently update their product varieties to meet market demands and competition. However, most companies are still accustomed to extensively using traditional dedicated fixtures. In factories with medium production capacity, there are typically thousands to nearly ten thousand sets of dedicated fixtures. On the other hand, in high-mix production enterprises, approximately 50~80% of dedicated fixtures need to be updated every 3~4 years, while the actual wear rate 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 power 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.

fwt gmbh workpiece fixture applications

1) Consistently ensure workpiece machining accuracy: When using a fixture to clamp a workpiece, 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, ensuring consistent machining accuracy for a batch of workpieces. 2) Reduce auxiliary time and improve labor productivity: Using fixtures for workpiece clamping is convenient and fast. Workpieces do not require scribing or alignment, significantly reducing auxiliary time. Clamping workpieces in fixtures improves workpiece rigidity, allowing for increased cutting parameters. Fixtures capable of clamping multiple workpieces or multiple stations can be used, along with efficient clamping mechanisms, to further improve labor productivity. 3) Expand the usage range of machine tools and achieve multi-functionality: By attaching different types of fixtures according to the forming movements of the machining machine tool, the original process range of the machine tool can be expanded. For example, installing a boring jig on the carriage of a lathe or the table of a radial drilling machine allows for boring operations on box-type parts. 4) Ensure 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) Increase productivity and reduce costs: Using fixtures to clamp workpieces allows for rapid positioning and clamping without alignment, significantly reducing auxiliary time. Clamping workpieces in fixtures improves workpiece rigidity, allowing for increased cutting parameters. Multi-workpiece and multi-station fixtures can be used 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) Expand the process range of machine tools: Using dedicated fixtures can change the original purpose of the machine tool and expand its usage range, achieving multi-functionality. For example, installing boring jig fixtures on lathes or radial drilling machines enables boring operations on hole systems of box-type parts. Dedicated fixtures can also convert lathes for broaching operations, fully leveraging the capabilities of general-purpose machine tools. 7) Reduce worker labor intensity: Using fixtures for workpiece clamping is convenient and fast. When using pneumatic, hydraulic, or other clamping devices, worker labor intensity can be reduced.

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