摘要:
It is possible to easily change CAM tables, which are used for executing an electronic CAM operation. A CAM computation program performs an electronic CAM operation, using a CAM table that is an array in which displacements of a slave axis of an electronic CAM are associated with phases of a master axis of the electronic CAM. A CAM table generating program receives input of a CAM definition variable that defines an electronic CAM operation to be realized by a motion control, and generates a CAM table in which a CAM curve is stored as an array corresponding to the inputted CAM definition variable. A microprocessor performs a CAM computation program using the CAM table. If the microprocessor receives the input of the CAM definition variable, the microprocessor performs the CAM table generating program to generate the CAM table, and stores the generated CAM table into the main memory.
摘要:
The servo controller of the present invention includes a first axis speed feedback obtaining unit, a second axis speed feedback obtaining unit configured to obtain an amount of speed feedback for a second axis synchronizing with a first axis, a speed conversion unit configured to convert an amount of speed feedback for the first axis by using a conversion coefficient, a speed difference calculating unit configured to calculate a speed difference between the converted amount of speed feedback for the first axis and the amount of speed feedback for the second axis, a torque correction calculating unit configured to calculate a torque correction value by using the speed difference, a second axis torque command correcting unit using the torque correction value, a torque correction value converting unit using the conversion coefficient, and a first axis torque command correcting unit using the converted torque correction value.
摘要:
Machine tool systems and methods include methods of synchronizing cutting tools with a workpiece retainer. In some embodiments, the methods and systems provide at least two cutting tools that are synchronized to machine a common surface of a workpiece in a quick and efficient manner. A controller having a single line of code for controlling both cutting tools and the workpiece retainer may be used. The cutting tools may be synchronized such that they engage substantially opposite portions of the workpiece, thereby to reduce resulting forces in the workpiece that may tend to induce workpiece deflection and/or chatter. In other embodiments, a cutting tool is synchronized with a split workpiece holder that may be controlled to induce a compression, tension, or torsion pre-load in the workpiece.
摘要:
A numerical controller which, after once stopping a slave axis during superposing control, can easily resume the superposing control. In the superposing control, a motion amount for a master axis and a motion amount for the slave axis are added to a workpiece coordinate value of the master axis and a workpiece coordinate value of the slave axis, respectively, to update their present position data (I2, II2). These motion amounts are supplied also to servo processing (I3, II3) for the master axis and the slave axis, where an amount obtained by superposing a motion amount δzIm for the master axis ZIm on a motion amount δzIIs for the slave axis ZIIs is supplied to the servo processing for the slave axis ZIIs. When a slave axis motion stop command is issued, the motion of the slave axis is stopped and a motion amount δzIm for the master axis ZIm is subtracted from the workpiece coordinate value of the slave axis ZIIs. This makes it possible to retain the positional relationship between the master axis and the slave axis, and hence easily resume the superposing control when the motion of the slave axis is restarted.
摘要:
A method and an apparatus are disclosed for controlling a motional sequence of a first movable component of a plastic material injection molding machine having a first trajectory spatially overlapping at least partially a second trajectory of a second movable component of the plastic material injection molding machine. Motion of the first movable component is initiated depending on an enabling signal indicative for a motional state of the second movable component. The method comprises the steps of: a) determining a first period of time (TWA; TRE) between a first moment in time (tFW; tFR) when the enabling signal is generated and a second moment in time (t6; t3) when the first movable component enters the second trajectory; b) determining a second period of time (TRAmax; TWEmax) between the first moment in time (tFW; tFR) and a third moment in time (t10; t8) when the second movable component leaves the first trajectory; c) comparing the first period of time (TWA; TRE) with the second period of time (TRAmax; TWEmax) and generating a difference signal therebetween; and d) controlling motion of the first movable component as a function of this comparison of the first period of time (TWA; TRE) with the second period of time (TRAmax; TWEmax) such that the difference signal is smaller than a predetermined minimum tolerance value (T2; T1).
摘要:
Apparatus and method are provided for automatically controlling the position of one or more objects. The apparatus comprises a position control network which receives macro-type movement commands from a mainframe computer. The network includes a plurality of interface processors each adapted to provide a plurality of micro-commands in response to each macro-command. The micro-commands are supplied to motion controllers which in turn control the movement of servomotors. The servomotors position the object. Position encoders are provided to monitor the position of the objects and provide position data to the interface processor for transmission to the mainframe computer. A novel method is disclosed which employs the foregoing apparatus to provide synchronous motion of two or more objects.
摘要:
In a synchronization operation instruction of a synchronization control of moving a slave axis at a certain ratio with respect to a master axis movement amount, a master axis movement amount before start of change of a synchronization magnification, used in an operation based on a synchronization magnification changing instruction, is determined by referring to a parameter of the synchronization operation instruction so that the operation based on the synchronization magnification changing instruction ends at a set synchronization start master axis position. With such a configuration, the synchronization control is started based on the synchronization operation instruction from the synchronization start master axis position set in the synchronization operation instruction.
摘要:
In the first synchronous system of the synchronous control unit (1), movement commands of the first motor (23) and the second motor (13) made by the movement command making section (9), which are synchronized with each other, are respectively supplied to the first amplifier (22) and the second amplifier (12) through the first communication path (11) and the second communication path (21). In the second synchronous system switched from the first synchronous system, the first motor (23) is decelerated by a deceleration command made by the deceleration making section (29) and the second motor (13) is decelerated synchronously with the first motor by a movement command made by the position feedback value controlled by the first motor (23) supplied to the second amplifier (12) through the third communication path (31).
摘要:
Among a plurality of synchronous control programs each configured to include a plurality of output software modules with respect to one driving software module, a synchronous control program of a multi-axis configuration, in which driving software modules are coupled together into a same axis, is displayed on one screen. On this display screen, display is switched between a parameter setting screen, status information on respective software modules, and a waveform graph of the driving software module and the output software modules, in order to enable work ranging from software designing to debugging to be efficiently performed.
摘要:
Two shafts whose moving directions do not intersect orthogonally with each other are set, then any one shaft of two shafts as an oblique reference shaft is set, then information based on an angle between two shafts whose moving directions do not intersect orthogonally with each other are set, then a first program orthogonal coordinate system constructed such that a moving direction of the oblique reference shaft coincides with a command axis direction of the program orthogonal coordinate system and a second program orthogonal coordinate system constructed such that a moving direction of another shaft other than the oblique reference shaft coincides with a command axis direction of the program orthogonal coordinate system are set, and then any one of the first program orthogonal coordinate system and the second program orthogonal coordinate system is selected. Accordingly, the optimum tool can be selected to meet to the process pattern and the process can be executed by the optimum shaft feed, and thus the processing precision can be improved.