摘要:
The present disclosure is directed to methods and systems for evaluating wafer size handling capabilities of wafer handling robots and wafer stations in a wafer processing environment. In one embodiment, a method is provided in which size parameters for each of one or more wafer stations and one or more robot hands of a wafer handling robot are set based on user input. A user command identifying a desired robot hand and a desired wafer station is received. A first size parameter of the desired robot hand is compared to a second size parameter of the desired wafer station. If the first size parameter is equal to the second size parameter, or if the second size parameter is an all-size parameter, the user command is executed. If the first size parameter is not equal to the second size parameter, an error is generated.
摘要:
A machine tool a tool includes a supporting member relatively movable to a workpiece along a predetermined axis, a servo motor configured to drive the tool supporting member to the workpiece along the predetermined axis, a sizing sensor configured to measure a profile of the workpiece and to output a size deviation of measured values from a target profile, and a position detector configured to detect at least one of a relative position of the tool supporting member to the workpiece and a rotational position angle of the servo motor. The a servo driver is configured to drive the servo motor, and has a first feedback control having an output based on the size deviation, and a second feedback control based on an output of the position detector. The servo drives the servo motor by combining the outputs of the first and second feedback controls.
摘要:
A feedback compensating apparatus for adjusting the working condition of a working machine of a working system adapted to process working portions of successive workpieces under control of a machine controller, which determines the working condition from an extraneous signal. The apparatus is used with the controller and a measuring device for measuring the dimensions of the processed working portions of the workpieces, and includes a device for obtaining dimensional data based on outputs of the measuring device during and/or after a working operation of the machine on each workpiece. The dimensional data include a dimensional error of the processed working portions, and a variable indicative of a tendency of change in the dimensional error. The apparatus further includes a device for determining the extraneous signal based on the dimensional data, and applying the signal to the machine controller to adjust the working condition of the machine. Also disclosed is a method of processing workpieces using the apparatus.
摘要:
A system and method for cutting material, adaptable for use with existing manufacturing devices, where the system can be adapted to work with existing controllable manufacturing processors, obtain one or more predetermined dimensions during a manufacturing process, and use those dimensions to simultaneously control the manufacturing process while generating a concurrent certification of the predetermined dimensions. In an exemplary embodiment the device comprises a milling line; a stepper motor; a mainframe; a protected real-time sensor; a controller; and a computer in communication with the controller and sensor. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of meaning of the claims.
摘要:
A method is described for grinding a composite workpiece to form a component having concentric and eccentric cylindrical regions. The method comprises mounting the workpiece in a computer controlled grinding machine having a grinding wheel the advance and withdrawal of which is controllable by a program entered into the controlling computer, loading a wheelfeed controlling program into the computer, relatively positioning the grinding wheel and the workpiece to align the wheel with a first selected region of the workpiece, advancing the grinding wheel towards the selected region so as to grind the surface thereof, controlling the wheelfeed so as to maintain grinding contact between the grinding wheel and the workpiece so as either to grind a concentric cylindrical region thereon or an offset cylindrical region thereon as required, information about each selected region of the workpiece being stored in the computer and addressed as appropriate so that the wheelfeed can be controlled appropriately depending on whether a selected workpiece region is to be ground as a concentric or an offset cylindrical region. The method allows a workpiece having both concentric and offset cylindrical regions thereon to be ground using a single grinding machine under computer control without demounting the workpiece from the machine. A computer controlled grinding machine is described as are programs for controlling the machine.
摘要:
A process control is provided for continuously monitoring and adjusting an apparatus for manufacturing discrete workpieces. The system measures a current workpiece by taking fifteen readings and deleting the highest five and lowest five readings and averaging the center five readings. This value is then used for sorting the workpiece in accordance with preset tolerance limits. The measured average value is also compared with an expected value which the system has computed and stored. An adjustment value is then calculated based on a comparison of the measured dimension of the current workpiece and a measured dimension of the last-produced workpiece and the expected value for the current workpiece. The apparatus is then adjusted in accordance with the computed adjustment value. The system also has the ability to calculate the statistical distribution of a plurality of previously produced workpieces and to adjust the apparatus in accordance with a comparison of the dimension of the current workpiece with the three sigma limits of the distribution. Furthermore, the system has the capability of calculating a statistical distribution and printing out this data as well as performing a capability study.
摘要:
An apparatus and method are provided for controlling automatic machines such as a metal cutting tool to perform predetermined operations on a work-piece. Different means are provided for sensing the workpiece as to shape, diameter or length to determine the degree of its adjustment or wear. An inspection device or probe is provided with a transducing means operable to generate signals which are indicative of workpiece dimensions and or location. The signals are analyzed by means of computing circuits which generate control signals for performing such functions such as cycle starting, correction of tool adjustment and varying the control program to permit the performance of predetermined operations on the work by the tool.
摘要:
An apparatus and method are provided for controlling automatic machines such as a metal cutting tool to perform predetermined operations on a work-piece. Different means are provided for sensing the workpiece as to shape, diameter or length to determine the degree of its adjustment or wear. An inspection device or probe is provided with a transducing means operable to generate signals which are indicative of workpiece dimensions and or location. The signals are analyzed by means of computing circuits which generate control signals for performing such functions such as cycle starting, correction of tool adjustment and varying the control program to permit the performance of predetermined operations on the work by the tool.
摘要:
In a numerically controlled machine tool a feed control apparatus is provided which includes a gauging means for controlling the movement of a movable component, such as a wheel head or a work table, of the machine tool. Control means are coupled to a numerical control means of the numerically controlled machine tool and to the gauging means. The control means will enable a shifting of the numerical control means from a numerical control mode to a jog mode for allowing a miscellaneous function to be performed and from a jog mode to a numerical control mode after a sizing signal is generated by the gauging means whereby the tool is first moved in a coarse numerical mode to a preset position, then the workpiece is gauged while the system is in the jog mode, and finally switched back to a fine numerical control for final machining with a resultant saving in the amount of numerical information required.
摘要:
A grinder having a workpiece mounted thereon is operatively connected to a tracking analog to digital converter via a sensor unit. The analog to digital converter comprises a summing amplifier, a forward/backward counter, a gating control, and a digital to analog converter and defines a closed loop configuration. Signals at the output of the summing amplifier are applied to a peak detector which generates a signal representing the degree of out of round of the workpiece. Counting pulses generated by the counter are applied to a reset-delay via the gating control for generation of a signal indicating the rate of removal of material from the workpiece. Pulses representing the state of the counter are applied to a limit circuit which generates signals representing the amount of material removed from the workpiece.