Robotic Deburring Tools

Mini Hiac Operation/Specifications
The FFP or Free Flying Piston, is an important part of the Mini Hiac.

 The FFP is pushed forward into contact with the burr edge by use of a remotely controlled air pressure. The air vane motor is decoupled from the linear movement of the FFP, to reduce inertia and increase the stability of the contact force when deburring. The spline coupling transmits torque to the rotary file.

 Ball bearings ensure an even running of the tungsten carbide file. A very little friction torque is transmitted through the ball bearings to the FFP cylinder, which rotates slowly inside the stationary outer cylinder. Thus stick-slip or static friction of the FFP is avoided. The FFP cylinder is in addition precision ground to ensure very little friction in the axial direction.

The pneumatic connection diagram for the Mini Flexdeburr is shown to the right.

 Conventional pneumatic components (not part of the Mini Flexdeburr machine delivery) are used to control the air supply to the Mini Flexdeburr.  We recommend the user install a pneumatic regulator in connection with the air supply to the deburring installation in order to achieve a stable air supply and to reduce the air supply to maximum 6 bar.

The electric on/off valve is actuated from the robot controller by means of a digital output signal.

The intention of the external pressure control valve  (actually a regulator) is to control the air supply to the axial force compliance mechanism, thus enabling control of the axial force on the rotary burr.  If the complete work piece can be deburred with equal axial force, a conventional manual pressure regulator can be used.  If the burrs to be removed are varying from spot-to-spot on the work piece, and this variation is repeatable for all work pieces of the same type, it might be necessary to adjust the axial force for different spots on the work piece.  This adjustment can be performed by means of an analog pressure regulator, controlled from the robot controller.  An analog output port in the robot controller will be needed.  As an alternative, several digital outputs may be coupled to a digital to analog  converter (D/A converter).  4-20 mA type signals are preferred.

Specifications:

• Motor: Air motor, vane type.
• Speed: Idle 33,000 rpm, operating 22-27,000 rpm.
• Torque: 0.025 Nm at 27,000 RPM tool speed
• Power: 70 W at 27,000 rpm tool speed.
• Weight total: 0.512 kg.
• Weight FFP with file: 30-35 g.
• Compensation, due to burr inaccuracy: max. +/-2.5 mm in/out and sideways, recommended to use +/-1.25 mm.
• Axial force: 0.3-8  N, by pressure 0-1 bar.
• File surface speed: 5.8-7.1 m/sec measured at 5mm diam. (halfway between tip and outer rim).
• Air consumption: Appr. 230 I/min., 5 bar pressure.
• Sound pressure level: 75 dB(A).
• Sound pressure value: 87 dB(C).
• Rotary burrs: Diameter 10 mm standard.  (1)90° coned shape, straight fluting.
• Other rotary burr/file qualities on request
• Special tools: Burr change tool (part no. 43770).  Hook spanner (part no. 5432)