摘要:
A method and apparatus for controlling the feed speed of a machine in a numerical control system having a manual pulse generator for generating pulses in response to a manual operation. The numerical control system numerically controls the machine by supplying the machine with the generated pulses as feed pulses in a manual feed mode and with feed pulses corresponding to a commanded feed speed in modes other than the manual feed mode. The commanded feed speed is modified in accordance with an override quantity stored in a register. The method includes selectively designating the modes other than the manual feed mode, changing the override quantity, which is stored in the register, based on the pulses generated by the manual pulse generator and in accordance with the designated mode, and modifying the commanded feed speed in accordance with the override quantity stored in the register.
摘要:
Disclosed is a measurement method performed by a numerical control device measurement apparatus having a device for computing and storing the difference between a number of feedback pulses, each of which is generated whenever a movable element moves by a predetermined amount, and a number of command pulses (P.sub.s) generated by a pulse distributor, a motor being controlled in such a manner that said difference approaches zero. Specifically, the measurement method includes counting, by the storage and computing means sensor pulses (MP) generated by a sensor, reading the counted value in the storage and computing device and applying the same to the pulse distributor as a command, computing and storing, by the storage and computing device, the difference between the number of sensor pulses (MP) and the number of distributed pulses (P.sub.s) generated by the pulse distributor, reading the content of the storage and computing device each time distributed pulses of a number equivalent to the counted value are generated and applying the read value to the pulse distributor as a command, and measuring the total number of sensor pulses by computing the total sum of the counted values read from the storage and computing device.
摘要:
A system for numerically controlling a machine tool comprising a plurality of machine tools, a plurality of numerical control circuits and a computer as an entirely automatic operation commander device, for carrying out the control of the entire processes of said plurality of machine tools with a central control station.
摘要:
A data input device equipped with a keyboard including a plurality of keys at least some of which are assigned both a letter of the alphabet and a numerical value, which keys are operated to generate signals representing data that comprises a letter of the alphabet and numerical values immediately following the letter. The initial operation of one of the keys produces the data indicated by the letter of the alphabet assigned to that key, and subsequent operation of the keys produces the data indicated by the numerical values assigned to the keys that have been operated.
摘要:
An operating information input method in a numerical control apparatus which executes prescribed numerical control processing based on numerical control program data and operating information includes steps of designating the start of operating information input displaying, on the screen of a display device, various operating information items (e.g. MODE, HANDLE AXIS, and HANDLE *10) e.g. and selectable items (MDI, AUTO, EDIT, HNDL, JOG, ZRN, HX, HZ) in the form of characters in response to designating the start of inputting operating information positioning a first cursor (CSR) on a line of an operating information item to be input, thereafter positioning a second cursor associated with the operating information item designated by the first cursor, on a line of a prescribed selectable item to identify the desired operating information based on the positions of the first and second cursors.
摘要:
A method of checking the rotational frequency of a spindle in a numerically controlled machine tool for rotating the spindle on the basis of a spindle rotational frequency command issued by a numerical control device. An alarm signal is issued when a fluctuation in the actual rotational velocity (AVC) of the spindle falls outside limits (TRV.sub.1) decided by a predetermined allowable percentage of velocity change, or when the actual rotational velocity (AVC) does not attain predetermined velocity limits (TRV.sub.2) even after the passage of a predetermined time period (P) following a change in commanded velocity.
摘要:
Among machining commands, symbols denoting moving directions, and movement data held in correspondence with data numbers are separately stored in a command area (101) and a data area (102), so that when a predetermined machining command, including a data number, has been read out from the command area, the movement data is read out of a memory location corresponding to the data number of this machining command, so as to successively perform predetermined numerical control processing.
摘要:
A method and apparatus for controlling the return of a movable element of a machine tool to a predetermined grid point by controlling a movable element drive device in accordance with feedback pulses generated while the drive device is being driven to transport the movable element between grid points. The method includes the steps of specifying a position remote from the predetermined grid point by a distance which is less than the spacing between grid points, computing the deviation between the specified position and the current position of the movable element, positioning the movable element at the specified position by driving the drive device on the basis of the computed deviation and the feedback pulses, and driving the drive device at reduced speed to stop the movable element at the first grid point encountered following the initiation of reduced-speed drive.
摘要:
A numerical control system which includes an automatic programmer and at least one numerical control device interconnected by a cable, in which a numerical control program prepared by the automatic programmer is transferred to the numerical control device. The automatic programmer includes an input unit for entering data, a processor which edits the data for producing a numerical control program, a memory for storing the complicated numerical control program, and a display device which displays a graphic in accordance with the output of the processor. The numerical control device includes a memory for storing the numerical control program, which is transferred from the automatic programmer via the cable.
摘要:
A method and apparatus for deleting a file from a bubble cassette memory. A file, constituting one input unit of data to be written into the cassette memory, is divided into a plurality of blocks each comprising a predetermined number of bytes and is thereafter stored in the cassette memory. In similar fashion a plurality of such files are stored in the cassette memory in numerical order. When a command for deletion of the n-th file F.sub.n is generated, files which were originally stored in the cassette memory following the n-th file F.sub.n are stored successively and in block-by-block fashion in the cassette memory starting from the position at which the n-th file F.sub.n was originally stored.