Abstract:
The present invention is a quill interlock for a milling machine. Structurally, the present invention includes a clasp or other attachment means attachable to a milling machine. The clasp carries a switch which is activated when the quill of the milling machine reaches a predetermined, user selected, position on the Z-axis. The switch is connected to the computer controlling the milling machine, causing the computer to relocate the milling machine table to a new X and Y location each time the quill is raised to the predetermined position on the Z-axis.
Abstract:
In a system for monitoring settling of a transient response of a load controlled by a following controller, a state estimation unit generates a state estimation quantity which shows an estimated state of the load. A settling evaluation function operation unit generates an evaluated output by inputting, to a predetermined settling evaluation function, the state estimation quantity and a control quantity output to the load by the following controller. A count unit generates time data showing a time elapsed since commencement of supervision of settling. A comparator unit compares the evaluated output and the time data with each other, and replaces the time data of the counter unit with the evaluated output on the basis of a comparison result. A decision making unit generates a settling completion signal when the time data shows a predetermined time.
Abstract:
A numerical control method makes it possible to perform machining of a workpiece at a high speed with a desired accuracy. After start of pulse distribution, a determination is made as to whether or not both a block being executed and a next block of an NC program relate to a cutting command (steps S12 and S13). An in-position value (A, B), corresponding to the determination result, is then stored in a register (C). In the case of three control axes, when the deviations (.epsilon.x, .epsilon.y, .epsilon.z) between target moving amounts and actual moving amounts for the three control axes are less than the value stored in the register (C), positioning control for the present block is completed, and the execution for the next block is started (S10). This permits variable setting of the desired positioning accuracy to be carried out. The method is applicable for any number of control axes.
Abstract:
A system for monitoring the position of a machine component, provided with an electrohydraulic drive system which, in order to control the forward and backward movements of this machine component, comprises a follow-up adjusting valve that operates with an electrically-controlled indication of the set value and with a mechanical announcement of the actual position. The monitoring system is provided with a mechanical conversion device which converts the deflections of the servocomponent of the follow-up adjusting valve into larger deflections, correlated therewith, of the mechanical operating element of a proximity switch which, seen in the deflection direction of its operating element, is arranged at a defined distance in relation to the position adopted by the operating element when the servocomponent of the follow-up adjusting valve is located in its characteristic basic setting for equivalence of the set and actual value. The proximity switch envisaged is a Hall generator, into whose field aperture projects the edge of a switching arm which can be driven rotationally by the deflection movements of the servocomponent of the follow-up adjusting valve.
Abstract:
A machine tool data system for receiving and storing abbreviated instructions representing blocks of machine tool control data and including pattern type instructions such as copy, mirror image and tool change each involving a series of such blocks, the computer responding to editing instructions such as insert or delete as to specified lines of stored instructions or computing the blocks represented by the stored instructions for transmission to an output device such as a tape punch, the computer generating the blocks of a pattern type series at the rate of utilization of said blocks by the output device. A machine tool may be connected on line and controlled by the computer simultaneously with the editing or tape preparation operations thereof, and the machine tool may be controlled manually from a data terminal on line with the computer when the terminal is not in use for tape preparation.
Abstract:
Apparatus for positioning a workpiece and tool in a precise location relative to each other by positioning in a predetermined site the workpiece, and then positioning the tool in a precise predetermined positon relative to the site in minimum total time. The apparatus comprises a closed loop position and velocity sensitive servo system connected to the workpiece, the servo system including positioning apparatus for positioning the workpiece in a predetermined site. A position indicator determines the actual position of the workpiece relative to a fixed reference and emits a signal output which is compared, in an error generator, with the desired position of the workpiece relative to the reference. The difference signal, from the error generator, is applied to the positioner and is used to bring the workpiece into the site. The positioner is provided with velocity feedback which cooperates with the positioning signal from the error generator to drive the workpiece into the predetermined site. Thereafter the error between the actual position address and the desired position address, although very small, is fed to second apparatus for positioning the tool a very small amount to precisely position the tool relative to the workpiece.
Abstract:
The invention relates to the combination of a stored program digital computer and a textile producing machine the machine being controlled by the computer. The computer includes a fast random access store in which is stored information concerning repeated areas of the material to be produced and a control program. The computer also includes a logic unit disposed between the store and the machine, the logic unit receiving information from the machine and also serving to supply information to the machine as instructed by the control program.
Abstract:
Transport robot circulates in a predetermined order among a plurality of substrate processing parts while holds substrates, thereby to perform circulating transportation of the substrates. Controller calculates a minimum wait cycle which corresponds to the number of circulating transportation during time from first circulating of a first substrate to first circulating of a second substrate under the condition that interference between the first and second substrates is prohibited. When the minimum wait cycle is shorter than a standard wait cycle which corresponds to the number of circulating transportation for processing of the first substrate, starting of the circulating transportation of the second substrate is delayed in the range of the minimum wait cycle to a standard wait cycle. Hence, the processing of the second substrate can be started without waiting for completion of the processing of the first substrate, resulting in that through put is improved.
Abstract:
An injection compression molding method and an apparatus therefor are provided, which are capable of accurately performing a molten resin compression operation during execution of an injection/hold operation or a metering operation, so as to produce high-quality molded products with no substantial variations between these products.A processing device for numerical control for controlling the drive of servomotors for individual axes of an injection molding machine executes pulse distribution associated with an axis for molten resin compression concurrently with execution of pulse distribution for an injection axis or a screw rotation axis (S200, S205) on the basis of information specifying the molten resin compression axis, information for the molten resin compression control including the feed amount, feed rate and feed direction associated with the molten resin compression axis, and a molten resin compressing operation command, which are respectively delivered from a programmable machine controller for sequence-controlling various operating sections of the injection molding machine upon elapse of a preset timer period from an instant at which an injection operation is started. The processing device also effects torque limit control of an output torque of a compression sevomotor so that a compression force actually applied to the molten resin attains a preset value.
Abstract:
Disclosed is a process which produces precision ground articles such as tungsten carbide burs without the use of skilled craftsmen. An automatic apparatus is described which is capable of performing the motions necessary to produce a machined given object and includes a control system for automated bur grinding. The process also converts geometric bur definitions into instructions that will produce the proper actions by the automated grinding.