System Description
The Fixtured Screw Feeding System consists of the Fixtured Tightening Module, Driving Tool, Power Focus 6000, Feeder, external Valve Control Unit, cables, and hoses. It is part of Atlas Copco’s Smart Connected Assembly concept and supports industrial production environments to become more efficient, ergonomic, and maximize the production output.
The Fixtured Tightening Module is a part of the Fixtured Screw Feeding System. It consists of the following components:
Screw Feeding Front Part (Bit Stroke and Head Stroke)
Driving Tool
Screw Feeding Front Part
No | Components | Functions |
1 | Bit | Transmits the Torque to the screw. |
2 | Aligning Jaws | Guides the air-blown screw during the screw tightening process. The Aligning Jaws are connected to their holders with tension pins. The spring in the holders closes the Aligning Jaws. |
3 | Swivel Arm | Holds and loads the next screw while the previous screw is being tightened. The Swivel Arm guides the air-blown screws into the Aligning Jaws of the Feeding Head while it is in the loading position. In the working position, the Swivel Arm is swirled out by the Bit movement. |
4 | Feeding Head (in blue color) | Receives the screws through the swivel arm. The Aligning Jaws attached to the jaw holders, and thereby the feeding head guide the shift, and hold the screw in place for the bit to engage. |
5 | Swivel Arm Holder | Holds the Swivel Arm. |
6 | Quick-change Coupling | Helps to change the Feeding Head and Bit Assembly. |
7 | Feeding Tube Connector | Connects the Feeding Tube. |
8 | Sleeve | Helps to change the angle positions of the Feeding Head. Using these screws, the angle positions of the Feeding Head can be changed in -45°, -90°, 0°, 45°, and 90° degrees. Refer to the Angle Positions of the Feeding Head image below the table. |
9 | Feeding Tube | Transports the screws from the Screw Feeding Unit to the Swivel Arm by the pressurized air. |
10 | Ring Sensor | Detects the screw at the end of the Feeding Tube. |
11 | Inductive Sensor | Detects whether the Bit is completely retracted. |
12 | Stroke Position Sensor | Detects the position of the Bit Stroke. |
Angle Positions of the Feeding Head
The Screw Feeding Front Part carries out the automatic feeding process. The stroke module is part of the Screw Feeding Front Part. The stroke module consists of Head Stroke and Bit Stroke which are described below:
Bit Stroke
The Bit Stroke only allows movement of the Bit in the front to push the screw through the jaws. It is used and mounted on robots or Cartesian slides that provide the Z-axis motion to the part.
Description | Value |
Total weight including Driving Tool | 4.3 kg |
Compatible Driving Tool | QST34 |
Maximum Torque of the Screw Feeding Front Part | 10 Nm |
Head Stroke
The Head Stroke provides additional axis movement to bring the Feeding Head closer towards the tightening location. Thereby, the motor stays stationary and only the Feeding Head moves. It is used and mounted in stand-alone cell assembly and palletized assembly lines.
Description | Value |
Head stroke | 48 mm |
Total weight including Driving Tool | 6 Kg |
Compatible Driving Tool | QST34 |
Maximum Torque of the Screw Feeding Front Part | 10 Nm |
Driving Tool
No. | Component | Function |
1 | Drive Shaft | Geared shaft of the rotary drive |
The Driving Tool generates the rotary motion and provides Torque which is transmitted to the Screw Feeding Front Part via the Drive Shaft.
Driving Tool | Torque Range | Speed |
QST34-8CT | 2 - 8 Nm | 3000 rpm |
QST34-20CT | 4 - 20 Nm | 1000 rpm |
QST34-8CTTA | 2 - 8 Nm | 3000 rpm |
QST34-20CTTA | 4 - 20 Nm | 1000 rpm |
