摘要:
A device for positioning several units that can be moved adjacent to and at a constant distance from one another, each unit having a distance-traveled detector associated with its drive mechanism and the device as a whole having central controls that emit a reference value. To provide a positioning device that will operate effectively with a minimum of control lines between each unit and the central controls, each unit has a separate computer to control its drive mechanism, each computer is equipped, as are the central controls, which also have an overall computer, to emit a series of coded blocks of information for each unit, and each of the computers associated with the units is equipped to intercept, process, and forward the blocks of information and to actualize the information pertaining to the position of its own unit.
摘要:
In a numerically controlled machine includes a first computer which stores command data for a path and derives sets of interpolation point data from said command data for a plurality of points along the path. A second computer stores two sets of interpolation point data from said first computer and extrapolates a set of said stored interpolation point data by incrementing velocity with acceleration and position with velocity using a noncircular high order polynomial to produce a sequence of driver command signals.A timing means provides timing signals to the second computer to determine the number and rate of iterations of drive command signals in said sequence as predetermined by the first computer for each set of interpolation point data.The program execution time in the second computer is reduced by a unique method of multiprecision calculation which requires a carry flip flop for each variable calculated and a sign flip flop for eliminated word segments. The memory address decoding for the two sets of interpolation print data are interchanged after each sequence invisibly to the computers. An index register causes data memory address decoding for a plurality of motor drivers invisible to the computers and selects an output to the appropriate motor driver. The second computer includes a manual mode program to calculate the sequence of driver command signals using a manually induced velocity vector. A phased locked loop in the timing means controllably reduces the iteration rate to zero in response to an error signal.
摘要:
The present invention provides a tool information display device for a processing machine which can display information on tools installed in appropriate parts of the processing machine, in an easy-to-understand manner. The present invention allows even the identification numbers of installed tools to be checked in an easy-to-understand manner. The present invention provides a tool information display device for a processing machine 101 having tool magazines 5, 6 on each of which a plurality of tools can be installed. The tool information display device includes tool information managing means 33 for managing information on the tools 7 installed on the tool magazines 5, 6. The tool information display device also includes installation status display means 33 for providing a display 50 of installation status of the tools which reproduces installation and arrangement of the tools on the tool magazine 5, 6 in a pseudo manner, in accordance with the information managed by the tool information managing means 33. In the pseudo installation status display 50 for the tools, tool presence information 51 is displayed at positions on the tool magazines 5, 6 at which tools 7 are installed and not at positions on the tool magazines 5, 6 at which no tools 7 are installed. The identification number of each of the tools 7 is displayed in addition to the tool presence information 51.
摘要:
A method and apparatus for controlling a work function, such as, for example, welding, requiring the control of at least one parameter according to a predetermined sequence, the apparatus including at least one work station where the work function is carried out, a slave controller associated with the work station for controlling the work function, at least one interface operably connected to the slave controller capable of receiving and storing information for a first parameter of the work function and preventing transmission of the parameter information to the slave controller until being probed by the slave controller, and a master controller operably connected to the interface to transmit thereto the parameter information, and the master controller being further operably connected to the slave controller to cause the slave controller to probe the interface to allow transmission of the parameter information to the slave controller. In one embodiment, the information for a second parameter is transmitted from the master controller to the control portion of the slave controller so that such parameter information can be modified, if desired, while the work function is being carried out.
摘要:
An improved flexible manufacturing system comprises a plurality of computer numerically controlled machine tools, each controlled by a machine control system which is supplied with a plurality of sets of machine NC part programs and a program map from a supervisory control computer system. Each of the machine tools is located about the perimeter of a track which carries a plurality of pallet-carrying transporters, each moving under the control of a material handling system controller. The supervisory control computer system, coupled to the control system of each machine tool and to the material handling system controller, is provided with input data indicative of production requirements, material resources and system status, that is to say, the type of part carrying pallet carried by each transporter. In accordance with the input data supplied thereto, the supervisory control computer system supplies routing information to the material handling system controller which, in response, initiates movement of a transporter to a machine tool, shuttling of the part carrying pallet from the transporter to the machine tool, and execution of a selected one of the sets of machine NC part programs by the machine control system in accordance with the program map. During intervals, when the supervisory control computer system is inoperative, continued flexible manufacturing system operation can be maintained by operating the material handling system controller in semi-automatic or manual mode.
摘要:
A method of optimizing drive controls in a computer-controlled machine tool. The method comprises the steps of (a) ascertaining the system parameters of the drive control system from an open-loop system response, (b) computing the control parameters of a control system from the system parameters and a closed-loop target response, (c) simulating a closed-loop control system using the system and control parameters, (d) comparing the target response with a simulated response, (e) varying the control parameters in the simulated control system, (f) repeating steps (d) and (e) until the responses coincide and (g) setting the final control parameters into the control loop of the actual drive control system. The method steps are executed by means of the machine tool computer control.
摘要:
A machine tool control system includes a numerical control device associated with each machine tool and an interface unit interposed between each machine tool and the numerical control device. The numerical control device includes a first memory area for storing a first group of programs related to the machining of a workpiece and the selection of a cutting tool, and a second memory area for storing a second group of programs related to interrupting instructions.
摘要:
Apparatus for controlling the position of a plurality of machining shafts each including a machine tool fitted thereto so as to move each machining shaft up to its given position in response to the kind of machining to be subjected to a work piece. The apparatus comprises a memory for memorizing the position of each of the machining shafts which are different from each other in dependence with the kind of machining to be subjected to the work piece and a central processing unit for reading out data showing the position of each machining shaft from the memory in succession and generating through one servo-amplifier a signal required for moving the machining shaft corresponding to each servometer to its given position.
摘要:
High-speed data processing units are interposed on one-to-one basis between a host computer and each of NC units corresponding to each of NC machine tools. Each of the high-speed data processing units converts data transmitted from the host computer to each of the NC machine tools into NC data, and then inputs the data to each of the NC units, thereby making unnecessary for the NC units and the host computer to convert the data into NC data. Further, each of the high-speed data processing units temporarily stores machining data or the like transmitted from the host computer, thereby enabling each of machine tool bodies to continue its machining operation without being disturbed by the timing of data transmission.
摘要:
The normal course of operating a numerically controlled machine tool includes the automatic collection of significant event data without any special interaction by the machine tool operator. These events are of two types: those embedded in the machine tool part program, which may be ordinary program steps or special event markers; and those which represent operator intervention of the programmed process operating on the machine tool. The theoretical time for the occurrence of the programmed events is embedded in the machine tool part program. The identity, date and time of the actual occurrence of an event is stored in nonvolatile memory. This technique may be used in a single computer controlling one or more machine tools or in a network with a host computer serving as the event depository and as the source of machine tool part programs. The event records are available for analysis to improve the productivity of the operation.