摘要:
A noncontact profile controller for profiling the shape of a model by using at least two optical distance detectors that detect the distance of the model. While one (5a) of the optical distance detectors is detecting the distance, the other optical distance detector (5b) operates the irradiated light to stop detecting the distance. When the two optical distance detectors (5a, 5b) are secured on a tracer head (4) to detect coordinate values on the surface of the model (6), no interference occurs even when the light reflected from the surface of the model (6) falls on the position sensor of the other optical distance detector (5b). Therefore, a plurality of measuring points can be detected without interference even when measuring points on the surface of the model (6) are brought close to each other to some extent.
摘要:
Apparatus and method for aligning a welding device along the center of a gap defined by confronting edges of at least two workpieces (55,56) to be joined, wherein relative motion between the welding device and the workpiece gap (G) occurs along a longitudinal axis substantially parallel to the gap (G) such that the proximal edges of the workpieces (55,56) can be joined by forming a weld seam along the gap during the relative motion. The apparatus preferably includes an imaging system (77) for determining the location of the gap center relative to a predetermined two dimensional coordinate system by monitoring an image of a vision area along the gap downstream of the welding zone. In a preferred embodiment, the imaging system is effectively isolated from the welding zone through use of a high magnification optics system, a shroud structure, an independent light source (84), and a vectored jet of inert gas supplied to the welding zone.
摘要:
A control processor in a robotic system treats optically sensed locations along the path ahead of the tool, which are classified in relation to elapsed distances and identified in 3-D coordinates and 3-axes tool orientation, to apply in real time and under feedforward a control signal representing the error between anticipated tool position and anticipated sensed location on the path. In the process, the anticipated sensed location is obtained by reference to a model made ahead of time with the stored sensed locations grouped as a function of elapsed distances and having a common algebraic feature, such as the slope or the change of slope. A taught path for the robot has been recovered by the control processor also based on elapsed distances and control is related to actual tool position provided by the robot.
摘要:
A control processor in a robotic system treats optically sensed locations along the seam path ahead of the tool, which are classified in relation to elapsed distances and identified in 3-D coordinates and 3-axes tool orientation, to apply in real time and under feedforward a control signal representing the error between anticipated tool position and anticipated sensed location on the path. In the process, the anticipated sensed location is obtained by interpolation between actually sensed locations. A taught path is recovered from the robot. The control processor operation is also based on elapsed distances and related to actual tool position provided by the robot.
摘要:
A look-ahead sensor attached to its effector end deviates upon each control action upon the robot toward a new position along the seam path. The chord across the seam path from the present effector end to the contemporaneously sensed seam path location is determined and used with the present orientation of the effector end to determine an additional yaw angle compensating for the deviation. As a result, the look-ahead sensor is constantly brought back on track.
摘要:
A control processor in a robotic system treats optically sensed locations along the path ahead of the tool, which are classified in relation to elapsed distances and identified in 3-D coordinates and 3-axes tool orientation, to apply in real time and under feedforward a control signal representing the error between anticipated tool position and anticipated sensed location on the path. In the process, the anticipated sensed location is obtained by reference to a model made ahead of time with the stored sensed locations grouped as a function of elapsed distances and having a common algebraic feature, such as the slope or the change of slope. A taught path for the robot has been recovered by the control processor also based on elapsed distances and control is related to actual tool position provided by the robot.
摘要:
A method of detecting position data in arc welding by monitoring the shape of light of welding arc and/or the position thereof. That is, in effecting the arc welding along the position of the beveling while detecting the position of the beveling, the shape of the arc light is imaged by an imaging device from above the joints of the members that are to be welded together, and the shape of the arc light thus imaged is converted into binary values. The shape and/or the position of the arc light converted into binary values are monitored, thus making it possible to detect the position of beveling, height of welding torch, starting point of welding, ending point of welding, corner point of the outer track, corner point of the inner track, work contact point of the welding wire and the gap of the beveling.
摘要:
In an optical line tracer sudden changes of velocity can cause instability and vibration. Means are provided to limit acceleration or deceleration to a specific rate of change. Speed change signals are processed through a ramp circuit which converts the step function signal to a ramp function before application.
摘要:
In a circular scanning pattern tracing system having a sample and hold circuit, the width of the sample pulse is - made adjustable. This variable width is equivalent to a variable low pass filter in the system. The effective cut off frequency of the filter is made dependent on the system tangential tracing velocity.