Truss fabrication machine with joystick controls

  • US 5,048,409 A
  • Filed: 04/23/1990
  • Issued: 09/17/1991
  • Est. Priority Date: 04/23/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. In a truss fabricating apparatus having an elongated table for supporting truss elements to be joined by connector plates pressed into place thereon, a gantry spanning the table and movable longitudinally thereof, and at least one press unit mounted on the gantry for movement therealong transversely of the table to successive positions where the press unit may be actuated to engage the connector plates, a control system for the gantry and the press unit comprising:

  • the same;

    a reversible drive connected with said press unit for causing the same to move along the gantry and traverse the table;

    a joystick control movable in positive and negative X directions corresponding to movement of the gantry longitudinally of the table, and movable in positive and negative Y directions corresponding to movement of the press unit along the gantry transversely of the table;

    means responsive to X-direction movement of said control for producing an electrical, gantry control signal representative of the X-direction polarity and displacement of the control;

    means responsive to Y-direction movement of said control for producing an electrical, press unit control signal representative of the Y-direction polarity and displacement of the control;

    driver means connected with said reversible motor means and said reversible drive for operating the same in response to said gantry and press unit control signals to cause the gantry to move longitudinally of the table in a direction and at a speed governed by said gantry control signal, and to cause the press unit to move transversely of the table in a direction and at a speed governed by said press unit control signal, whereby to shift the press unit to a position for engagement with a connector plate; and

    selectively operable means connected with said press unit for actuating the same, whereby the joystick control and selectively operable means enable an operator of the apparatus to guide the press unit to the successive positions required for installation of the truss connector plates.

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