Abstract: In a drilling control apparatus for properly controlling a load sitting on a drill, a cutting reaction force estimate unit (1) estimates a disturbance load torque Yz acting on a servomotor (feed axis) (63) based on a speed signal X1z to the servomotor (63) and a torque value U1z commanded to the servomotor (63). In drilling operations, the cutting reaction force Yz is equivalent to a cutting reaction force generated between a drill (75) and a workpiece (91). Note, rotation of the drill (75) is controlled by a spindle motor (73) and a position in a Z-axis direction of the drill (75) and a feed speed of the drill (75) are controlled by the servomotor (63) through a spindle head (74).

Abstract: A telescopic cover, provided for a machine tool, which comprises a first member slidable between first and second positions along an axis and having first and second ends provided toward the first and second positions respectively, a second member provided beneath the first member stationary along the axis, and a feeding mechanism for moving the first member along the axis, the feeding mechanism being provided in a space beneath a horizontal plane substantially coincide with the top face of the second member. The telescopic cover comprises a pair of telescopic cover assemblies which are provided over the feeding mechanism so as to retract and extend along an axis when the first member moves along the axis. The pair of telescopic cover assemblies comprises a pair of first cover members attached to the first and second ends of the fist member to move with the first member, a pair of second cover members provided for the respective first cover members.

Abstract: A gas-liquid separating apparatus for separating gas and liquid of a gas-liquid mixture includes a drum, and a separator disposed in the drum. The gas-liquid enters the separator into a cylinder of the separator in a tangential direction, and thus flows along the inner wall surface of the cylinder so that centrifugal separation of the gas and liquid is effected. The gas is discharged into a gas-phase section of the drum. At least part of the primary isolated liquid is decelerated by a perforated plate of the separator from which the liquid flows into a liquid-phase section of the drum. Because the primary isolated liquid flowing into the liquid-phase section of the drum has a slow outflow velocity, it tends to flow upwardly in the vicinity of the cylinder due to the buoyancy of gas still entrained in the liquid. Accordingly, the gravitational separation of the entrained gas and liquid is facilitated.

Abstract: An automatic tool changer for a machine tool comprises a first cam (C.sub.S) for swinging a turret (38) by cooperation with a first cam roller (21) mounted on a back face of the turret (38); a second cam (C.sub.L) for raising and lowering the turret (38) with respect to the spindle head in a direction along a central axis of the spindle of the machine tool; and a link (6, 8, 14, 16) having a second cam roller (22) cooperating with the second cam (C.sub.L), the link raising or lowering the turret (38) with respect to the spindle when the turret (38) is swung by the cooperation between the first cam (C.sub.S) and the first cam roller (21) in order to reduce the shock generated at the spindle and the turret (38) at the tool change.

Abstract: A telescopic cover apparatus, which is mounted on a machine tool, includes a telescopic cover, including first to seventh cover members slidably fitted with one another, and a pantogragh drive mechanism including first to sixth parallelogrammatic link mechanisms continuously arranged in the cover extension/contraction direction. Each link mechanism includes first to fourth link members and first to fourth joints for pivotally coupling the link ends to one another.

Abstract: This invention relates to an industrial machine control device for controlling machine tools and other industrial machines. The industrial machine control device is able to provide a predetermined position arrival signal with no detectors attached to the machine, and therefore it is possible to carry out the positioning of a movable member with high accuracy and reliability regardless of the life period of time of the detectors which are required in conventional ones.

Abstract: A numerical control device used in conjunction with a machine tool including a spindle head having a plurality of tapping tools is provided with a tapping pitch data group memory which stores the tapping pitch of each tool. Upon selection of a tool according to a machining program, a corresponding data group is retrieved from memory and from this data group an average tapping pitch is obtained. According to the average value thus obtained, a suitable feed rate is selected.

Abstract: An automatic tool changer having a turret (3) provided with a plurality of tool holders (9). The turret (3) is indexed at a tool changing position to remove a tool (7) from a spindle unit (1) and to attach a selected tool (7) to the spindle unit (1). A crank (6) suspended for swing motion and holding the turret (3), and a crank operating lever (4) biased by a spring (17) so as to hold the crank (6) to a standby position and operated for swing motion by a cam (8) provided on a vertically movable spindlehead (22) are interlocked by a rod (10) combined with a load limiting spring (18). The crank operating lever (4) is stopped at a set position by a stopper (24), and the crank (6) is stopped at a set position by a stopper (23) when the crank (6) is advanced toward the tool changing position.

Abstract: A control device for an industrial machine comprising a numerical control device and a programmable controller, the numerical control device comprising: a data processing section essentially comprising a memory and a central processing unit, for analyzing and operating input numerical data, outputs of the data processing section being used for performing numerical control of a machine to be controlled and of rotation of a spindle of the machine; a gear ratio data memory for storing gear ratio data of gears through which a spindle motor is coupled to a spindle head holding a tool, the gear ratio data being applied to the gear ratio data memory through a bus from the programmable controller adapted to perform sequence control of the machine; and synchronous operation controller for calculating actual speed of rotation of the tool through operation using the gear ratio data and a feedback signal of the spindle motor, and performing synchronous operation control of the tool and a feed shaft.

Abstract: An automatic tool exchanging device for a machine tool, comprising a stopper block (5, 5') attached to a magazine supporting member (2) supporting a magazine (1) at the lower end thereof and capable of swinging to the front and rear, and pulled by an elastic member (8) having one end connected to the upper end of the magazine supporting member (2). Upon arrival of the magazine (1) at a standby position from a tool exchanging position, a stopper (4, 4', 11) is engaged with the stopper block (5, 5') to prevent vibration of the magazine (1). A desired tool among various tools stored in the turret magazine is selected automatically and automatically exchanged for a tool on the machine tool.

Abstract: A numerical control device which is capable of using a general-purpose setting display section to display machining data for controlling a machine tool or the like. The machining data can be displayed in character or graphic form, and internal processing is carried out using a high level language. A transmitting and receiving unit is interfaced with the general-purpose setting display section using a standard serial data interface to transmit the display data using the high level language.

Abstract: This invention is a numerical control machine having information input/output units for working data and for control data, a single control unit including a CPU, arithmetic unit, and a plurality of memory areas which may include program areas and data areas, and a driving unit including a plurality of independently operable drive system, which may be divided by system control means into a plurality of arbitrary groups corresponding to a plurality of independently executable control programs so that each group may be independently controlled by a separate program, wherein the entire numerical control apparatus acts as a plurality of control processing systems so that each operable system may be independently controlled by an independent program or a group of systems may be controlled by the same program.

Abstract: A numerically controlled apparatus for working a work piece by a tool, includes a memory unit, a central controller, a calculating unit and a driver for driving the tool. The memory unit stores working programs, execution block numbers, working data and shunting data. The calculating unit calculates the working data and shunting data under the control of the working programs. When the working operation is interrupted, the tool is shunted to a shunting position while performing the working operations in the shunting direction opposite to the normal working direction. Thereafter, the tool is returned to the position where the working operation was interrupted, and thus, the working operations are continued.

Abstract: A numerical control system including an input unit, a control unit, a memory, a processing unit, a setting and display unit, and an output unit, the memory unit including a first ROM region for storing and edited program produced by editing a machining program entered through the input unit in the memory, and a second ROM region for storing a program for writing the edited program into the first ROM region under a writing command entered through the setting and display unit.

Abstract: A dual language numerical controller includes a terminal (8') for entering both a numerical control (NC) language program and a higher level language, such as BASIC, program, a language discriminator (31) for determining which language has been entered, a higher level language interpreter (32) and an NC language interpreter (33), both for producing NC instruction data and an NC data table formatter (34) for arranging the instruction data in the order of which the entered programs produced them.

Abstract: A numerical control apparatus is disclosed by which tools are controlled concurrently with respect to their translations in the X-axis, the Y-axis, and the Z-axis in synchronism with or independently of each other. The numerical control apparatus comprises a memory region for storing the translation axis data; a memory region for storing the distance data; a memory region for storing synchronous-translation velocity data; a memory region for storing independent-translation velocity data; and a memory region for storing independent-translation axis data.

Abstract: A numerical control device which is capable of using a general-purpose setting display section to display machining date for controlling a machine tool or the like. The machining data can be displayed in character or graphic form, and internal processing is carried out using a high level language. A transmitting and receiving unit is interfaced with the general-purpose setting display section using a standard serial data interface to transmit the display data using the high level language.

Abstract: An NC apparatus in which a single interface is used in common with both an NC operation board and a machine operation board to thereby reduce the apparatus in size and the interfaces in number. A run code generator is provided on the machine operation board, which is removably connected with the interface, for putting the controlling program, which is the high-level language program, into the run state. The interface is a serial interface, preferably an RS-232 type interface.

Abstract: A numerical control system in which an external computer such as a microcomputer is used for controlling and communicating with a numerical control device. A first memory is provided for storing data control character codes for the external computer, while a second memory is provided for accessing the contents of the first memory for translating communications data used in data communications between the computer and the numerical control device. The contents of the first memory are determined so as to allow the numerical control device to perform data communications with an external computer employing different data control character codes.

Abstract: A numerical control system having a general purpose operating panel which is selectively detachable therefrom. The numerical control system includes a serial data transmitting and receiving section to which external signals are applied, an arithmetic section for performing numerical calculations on data received from the serial data transmitting and receiving section, a memory section for storing data received from the serial data transmitting and receiving section, results of claculations from the arithmetic section and programs, an output section for outputting results of calculations from the arithmetic section and the contents of the memory section as instruction signals to a machine tool, a control section for controlling the serial data transmitting and receiving section, the arithmetic section, the memory section and the output section, and a general purpose operating panel having a general purpose full keyboard and a general purpose display unit.