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Passive Compliance Force Device

The PushCorp Passive AFD92 Series Compliant Force Device is a simple, low-cost unit for many finishing applications. Using low friction cylinders and linear rail technology this device delivers outstanding performance. Fitted with a manual or electrically controlled pneumatic regulator, the AFD92 Series can make quick work of your process. This unit can be robot mounted or table top mounted for applications where the part is brought to the media.

The AFD92 Series is available in three configurations: AFD92-1 Vertical, AFD92-2 Horizontal, and the AFD92-3 Table Top. The units are functionally identical, but differ in the orientation with which they attach to the robot wrist, or mount to a table. This allows you to optimize robot reach and dexterity for your particular application.

The 92 Series can be equiped as either an AFD91 single acting with only positive force application, or an AFD92 double acting with positive and negative force capability.

Here are just a few operations the AFD92 Series, matched with the proper process equipment, can accomplish faster, more accurately, and with greater control than ever before:

  • Grinding (molds, weld beads)
  • Deburring (parting lines, chamfer)
  • Polishing (glass, wood, sheet metal)
  • Drilling/Chamfering (thru-hole, to-depth)
  • Weld Shaving
  • Any other process which requires an accurate, compliant, continuously adjustable applied force.
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  • Single or Double acting force application
  • Carriage Position Sensor included
  • Integral cartridge air filter
  • User supplied pressure regulator
  • 250 [1112 N] maximum compliant force
  • 1.4 in [36 mm] Linear compliant stroke
  • All fittings, fasteners, and threaded holes are METRIC
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Max Applied Force: 250 lbs [1112 N]
Force Resolution:±2.6 lb./psi [±166 N/bar]
Max Payload Weight:200.0 lbs [90 kg]
(excluding payload)
AFD92-1 - 39 lbs [18 Kg]
AFD92-2 - 34 lbs [15 Kg]
AFD92-3 - 34 lbs [15 Kg]
Compliant Stroke:1.6 in [40 mm]
Supply Air:Dry, 5µm Filtered, Non-lubricated, 80 psi [5.5 Bar] max
Specifications subject to change without notice.
U.S. Patent No. 5,448,146

Mounting Configurations

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The PushCorp, Passive AFD92 Series Force Device was designed as an inexpensive alternative to the Active AFD1200 Series Force Device. In some applications the AFD92 can provide comparible performance to the AFD1200 at a much lower cost. The simplicity of the AFD92 Series does, however, require more integration effort from the end user. The AFD92 Series is a very simple and rugged device, that incorporates several innovative features. The AFD92 Series uses glass cylinders with graphite pistons, and linear ball bearings to greatly reduce operating friction. It has the same physical dimensions as the AFD1200 Series, and the same bolt patterns.

The AFD92 Series requires the user to supply regulated pressure to control the force output. An AFD91 requires one regulator and the AFD92 needs two. The force output resoulution is highly dependant on the regulator accuracy. The regulator can be manual or electrically

controlled based on the application. If a constant force is required and the orientation does not change, a manual regulator is sufficient. If the force and/or orientation changes during the process, then an electrically controlled regulator is necessary to provide gravity compensation. This means that the process equipment weight must be compensated for, which requires calculation and adjustment of the regulator pressure at all times during the process.

The AFD92 Series has a linear potentiomenter installed inside the unit to monitor the carriage position. A connector on the outside of the unit is connected to a high-flex cable. The cable must be connected to a power supply and an analog input device. The position of the carriage can be monitored continuously during the AFD's operation.

If the end-user has the skills to setup the gravity compensation and linear potentiometer, the AFD92 Series may be the ideal solution. On the other hand, if easier setup and higher performance is desired, the active AFD1200 Series would be a better choice.