Trans-Quip Inc.

CA

The OSA-LATOR index table allows operator and robot to work simultaneously on robotic arc or spot welding applications. The OSA-LATOR two-station index table, designed for robotic arc or spot welding applications, optimizes production by allowing a robot and an operator to work simultaneously. While the robot performs its welding task on a part positioned on one side of the table, the worker secures the pieces to the next part on the tooling mounts on the opposite side.

When ready, the table rotates 180 so that the worker can remove the completed part while the robot welds the second part. A specially designed electro-mechanical orbital drive system gives a controlled, jerk-free acceleration/deceleration motion and positive locking without the need for auxiliary devices such as maintenance-prone shock absorbers, shot pins and clutches. The 180 oscillating motion eliminates the need for air or hydraulic manifolds and electrical slip rings. A 5-inch diameter opening through the center column of the table makes it easy to bring cables, air hoses, etc. up to the two tooling positions. Shielding is provided to keep out weld spatter and other problem contaminants.

The table design features a quick-change tooling system for increased flexibility. The two integral tooling modules, which the customer supplies, are each secured by two retractable clamps and can be changed in less than a minute. The table configuration allows tooling to be mounted either horizontally or vertically. Two models are available, with 500- or 1000-pound-per-station payload capacities and indexing times of 2.5 seconds and 4.0 seconds, respectively. Positioning repeatability is +0.002-inches at 30- inches radius, regardless of loading.

How it works: The orbital-Lock drive of the OSA-LATOR features a stationary central (sun) gear with two planetary gears, 180 apart, which orbit about the sun gear's circumference. These planetary gears are driven by a common carrier arm to ensure synchronization. A crank arm is attached to each planetary gear, carrying a cam roller at its end. As the carrier arm moves, the planetary gears rotate, forcing the cam roller against the table track. These rollers propel and control the rotation of the table platform. Due to the geometry of this system, the table experiences a smooth start followed by rapid acceleration and rapid deceleration coasting to a smooth stop. Also. the geometry is such that when the two cam rollers are in line between the centers of the two planetary gears they have (1) stopped table rotation and (2) cannot be back driven. The table is inherently locked when 'in-station' and external force on the table cannot overcome the self-locking nature of the system.

MIG Welding Robotic Work Cell

This new OSA-LATOR parts positioner doubles the productivity of a Robotic Welding Cell allowing the operator to load and remove parts while the Robot is working. The Robot is freed to perform at its maximum rate while worker safety is improved and manpower is reduced.

As the Robot welds one part positioned on the Robot side of the indexer, the operator sets the pieces for the next part into the fixture on his side of the indexer. When ready, the indexer quickly rotates 180. As the robot begins welding the second part, the operator removes the completed part and places the next into the fixture. Then the OSA-LATOR rotates back to the original position.

The OSA-LATOR is purposely built as a high cycle indexer for Robotic Work Cells. It boasts a series of unique features: a mechanical orbital-lock drive that produces vibration-free accel-decel motion, natural self locking positioning without external locks or pins and repeatable stopping accuracy to 70.001'. It has a hollow center column allowing easy access of cables up through the indexer to the fixtures, uses 180 reversing rotation to eliminate the need for expensive grounding collector rings, has quick release fixture mounts for rapid tooling changes, is extremely compact, provides cycle times to 2.5 seconds and is available in capacities to 1, 500 lbs. per station.

334110, 333990, 417230

Mexico, United States