thuba clamping fixtures Germany thuba models thuba prices

thuba clamping fixtures are machine tool accessories that operate on electromagnetic principles. Energizing the internal coil generates magnetic force, which passes through a magnetically conductive panel to firmly hold workpieces in contact with the panel surface. De-energizing the coil eliminates the magnetic force, demagnetizing the unit and allowing the workpiece to be removed. Primary applications include workpiece fixation during machining of ferrous materials on grinders, electromagnetic knife grinders, gantry milling machines, and gantry planers. Rectangular electromagnetic chucks have lifting screw holes on both sides; insert T-shaped screws for lifting during installation, and secure 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 top surface of the chuck once to ensure parallelism between the top and bottom surfaces. When holding workpieces, sufficient positioning holding force is achieved by bridging two adjacent magnetic poles, allowing grinding operations. Magnetization and demagnetization of the workpiece can be controlled via the machine tool buttons.

thuba clamping fixture types

1) Standard rectangular electromagnetic chuck Application: Surface grinding machines with rectangular tables. 2) High-power electromagnetic chuck Application: Milling machines, planers, machining centers. 3) Fine-pole electromagnetic chuck Application: Surface grinding machines with rectangular tables, milling machines. 4) Multi-function high-power electromagnetic chuck Application: Surface grinding machines with rectangular tables. 5) Rotary electromagnetic chuck Application: Various surface grinding machines. 6) Electromagnetic chuck for knife grinding Application: Knife grinding machines. 7) Circular electromagnetic chuck (concentric pole type) Application: Surface grinding machines with circular tables. 8) Circular electromagnetic chuck (radial pole type) Application: Surface grinding machines with circular tables. 9) Circular electromagnetic chuck (plum blossom pole type) Application: Surface grinding machines with circular tables. An electromagnetic chuck is an electromagnetic clamp that secures workpieces using the holding force generated by the chuck body when the electromagnetic coil is energized. The electromagnetic chuck consists of an iron core, coil, panel, and bracket. The electromagnet, formed by the coil and iron core, is the main component of the electromagnetic chuck.

thuba clamping fixture features

1) Chuck holding force: Electronically controlled high-power chucks provide superior holding force, up to 16kg/cm², with uniform and adjustable magnetic distribution. They are suitable for various heavy-duty machining, roughing, and finishing operations. Standard high-power chucks have weaker and uneven holding force, unable to meet the requirements of heavy-duty machining. 2) Machining accuracy: The holding force of electronically controlled high-power chucks does not require continuous power supply to maintain. Continuous operation generates no heat, avoiding thermal deformation of the workpiece. The strong and uniform surface holding force ensures highest machining accuracy even if the workpiece overhangs the table. In contrast, standard electromagnetic chucks require continuous current supply, generating heat over time. This causes thermal deformation of the workpiece and reduces chuck magnetic force, compromising machining accuracy. 3) Performance: Electronically controlled high-power chucks can operate continuously without failure or maintenance, even for more than 20 hours per day. Standard permanent magnet chucks show reduced holding force after about half a year of use. Standard electromagnetic chucks can only operate for a few hours per day, are prone to failures, and require frequent replacement and repair of internal components. 4) Operational efficiency: Using standard high-power chucks requires significant workpiece adjustment time, accounting for 40%-50% of the entire machining process. Clamping and positioning are prone to obvious errors, resulting in high scrap rates and very low efficiency. Electronically controlled high-power chucks feature automatic auxiliary positioning. Simply pressing a button completes workpiece clamping or release in 0.3 seconds, significantly improving production efficiency.

thuba clamping fixture usage

With the continuous development of China's industry, the use of electromagnetic chucks in industrial production is becoming increasingly widespread. The most important aspects of an electromagnetic chuck are its parameters, particularly its lifting capacity and working class. The lifting capacity of an electromagnetic chuck refers to the maximum weight allowed to be lifted under specified working conditions, also known as the rated lifting capacity. For cranes equipped with electromagnetic chucks, the lifting capacity should include the weight of the electromagnetic chuck. Rectangular electromagnetic chucks have lifting screw holes on both sides; insert T-shaped screws for lifting during installation, and secure 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 top surface of the chuck once to ensure parallelism between the top and bottom surfaces. When holding workpieces, sufficient positioning holding force is achieved by bridging two adjacent magnetic poles, allowing grinding operations. Magnetization and demagnetization of the workpiece can be controlled via the machine tool buttons. Clean the surface before using the electromagnetic chuck to avoid scratches. Avoid severe impacts to prevent affecting accuracy. Clean after use and apply anti-rust oil to prevent corrosion. When using an electromagnetic chuck independently, ensure it is grounded to prevent electric shock from leakage.

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