607 results about "Machine tool control" patented technology

In a machine tool controlled by using a numerical control device, a correction amount is determined for thermal displacement due to heat generation and heat conduction in a spindle motor and a feed shaft motor, in addition to thermal displacement due to heat generated by rotation of a spindle and a feed shaft. A tool position is corrected based on the correction amount. An entire stroke of the feed shaft is divided into a finite number of sections, and for each section, a correction amount for thermal displacement due to axial movement of the feed shaft is determined. The tool position is corrected based on the determined correction amount.

A machine tool control system. A machine tool controller is provided to receive commands from an input source and provide control instructions to a machine tool based at least in part on the commands. An operator interface is provided for inputting commands to the controller. The interface includes a display screen having images of individual command functions, the images being selectable on the screen to place into a sequence of command functions selected by an operator. A sequence generator indicates sequential ordering of the command functions represented by the sequence of images on the screen, such that a sequence of images on the screen selected by the operator is translated by the operator controller sequence generator into a sequence of commands to be inputted into the controller. The operator interface may include one or more images each representing a plurality of individual command functions in a defined sequence.

A machine tool controller is provided that includes a processor configured to execute a sequence of instructions in accordance with an operating program and a user program. A volatile memory temporarily stores instructions and data during execution of the sequence of instructions by the processor, and is coupled to the processor via a first interface. A first non-volatile memory stores the operating program and is coupled to the processor via a second interface. A second non-volatile memory stores the user program and is coupled to the processor via a third interface. A video controller is configured to control a user display in accordance with display data generated by the processor and is coupled to the processor via a fourth interface. A dual-port memory is coupled to the processor via a fifth interface and couples a serial bus controller configured to control communications with an external device via a serial bus to the processor. An external bus interface is configured to communicate control commands for controlling a machine tool generated by the processor via an external bus and is coupled to said processor via a sixth interface.

The invention discloses a numerical control (NC) system based on a virtual host computer, the NC system comprising the virtual host computer arranged on a remote server, a local lower computer and a human-machine interactive device for human-machine interaction. The human-machine interactive device is used for providing a human-machine interactive input/output interface. The virtual host computer integrates a human-machine interactive module, a non-real-time/half-real-time task execution unit and a lower-computer control unit, and is used for receiving a NC machining instruction, processing the instruction to form a machine-tool control instruction through the non-real-time/half-real-time task execution unit, and transmitting the control data to the local lower computer through the lower-computer control unit by utilizing a network. The local lower computer controls a machine tool to execute real-time motion control and logic control. The NC system employs a new architecture formed by the upper computer and the lower computer by utilizing virtualization technology, and solves the restriction problems of data processing capability, HMI function expansion and remote machining of a conventional NC system.

A control console for a work machine having at least one work tool has a rest and a plurality of operator control devices. The plurality of operator control devices are adjustable relative to the rest and configured to control at least one function of the at least one work tool.

An automatic tool changing method and an automatic tool changing device for a machine tool with a numerical controller capable of reducing the occurrence of impact due to tool exchange with a simple structure. A turret that rotates about a pivot shaft is provided on an arm and holds multiple tools. A swing cam CS that cooperates with a swing roller provided on the turret is provided on a spindle head. As the spindle head descends the turret rotates due to the action of the swing roller and the cam CS and exchanges tools. In order to lessen the impact that occurs at this time, the velocity of the spindle head is controlled. The ideal swing velocity pattern for the turret is obtained, and from this swing velocity pattern the swing position of the turret at each moment is obtained. From the swing roller and cam CS positions at this position the position of the spindle head 34 is obtained. From the acquired spindle head position the spindle head velocity pattern is obtained, and the spindle head is controlled using this velocity pattern. As a result, an ideal swing pattern can be achieved, and therefore no impact arises.

An object of the present invention is to provide: a spindle inclination detector capable of surely detecting spindle inclination with a simple configuration; and a machine tool including the spindle inclination detector. Spindle inclination detectors (41A, 41B) are equipped in columns (32A, 32B) of a portal bridge (24) of a machine tool (21). Each spindle inclination detector includes: a string (43) which hangs vertically with an upper end fixed to the column (reinforcement (32b)) and a lower end attached to a weight (45); a gap sensor (44) which is attached to the string to measure a distance to a front face plate (32a) of the column; and an oil damper (46). Moreover, a spindle inclination correction controller provided to the machine tool controls a Peltier device (42A,42B) attached to a rear face plate (32d) of the column, on a basis of an average distance measured by the gap sensor, and thus corrects an inclination of a spindle (28) due to the thermal deformation of the column by correcting thermal deformation of the column.

It is an object of the present invention to provide a controller for a machine tool and a five axis simultaneous control machine tool controlled thereby which can improve the machining accuracy in machining by controlling a driving axis including a linear axis and a pivoting axis.

The controller comprises a detecting member 102 detecting a machining position where a pivoting axis is reversed in machining by the machine tool 1 based on the control data, an allowable position error setting member 103 setting an allowable position error Δ between a commanded machining position P1 and an actual machining position P2, an allowable acceleration deciding member 107 deciding the allowable acceleration about the pivoting axis based on a distance L1, L2 from the machining position of the reversed axis to a center of the pivoting axis and based on the allowable position error Δ being set, and a controlling member 108 controlling a velocity about the driving axis based on the allowable acceleration.

This method of controlling machine tool for machining a workpiece by moving a tool and the workpiece relatively to each other comprises: displaying an image of the machine tool on a display unit, pre-storing a motion of the machine tool corresponding to an operation by an operator with respect to the image of the machine tool; obtaining a content of the operation by the operator with respect to the image of the machine tool; generating an operation command for causing the machine tool to operate according to the operation content; and activating the machine tool on the basis of the operation command.

The invention discloses a cutter point control method for a rotating tool of a double-rotating-work-table five-shaft machine tool. On the basis of a standard numerical control system with an RTCP (rotating tool center point) function, compiling post treatment is carried out according to the structural form of a five-shaft numerical control machine tool. The post treatment refers to a process for converting cutter position source files into a numerical control program identified by a machine tool control system. An RTCP option function is realized on a control system, the coordinate transformation is calculated through a controller, the processing procedures can maintain unchanged, and for the same batch of parts, the frequent program change due to installing and clamping position change is not needed. Only corresponding coordinate positions need to be written into parameters. Meanwhile, the method also brings following advantages that machined workpieces are diverse, the machining efficiency is improved, and the machining precision is high.

The invention discloses a machine tool self-adaptive control method based on a GA-BP neural network algorithm, and belongs to the technical field of numerical control machining. The method comprises the steps that a spindle motor power signal and a spindle vibration signal in the workpiece numerical control machining process are monitored in real time, and the feeding speed and the spindle rotating speed are optimized in real time and adjusted adaptively based on the spindle power signal and the spindle vibration signal; and the whole signal acquisition process does not influence normal processing. The machine tool self-adaptive control method based on the neural network algorithm can be used to effectively improve the machining efficiency and the machining quality, prolong the service life of a cutter and a machine tool and reduce the cost.

The invention relates to the field of machining, in particular to a method for predicting and compensating a machining deformation error of a miniature trough. A device form predicting and compensating the machining deformation error of the miniature trough comprises a machine tool working table, a micro milling cutter, a miniature groove piece, a dynamometer and a support, and the dynamometer and the support are arranged on the machine tool working table in parallel. According to the method, a displacement sensor is utilized to online monitor machining deformation of the miniature groove piece in real time, a sensing working table is utilized to transmit the adjusting information so as to conduct real-time adjustment on the miniature groove piece, uncertain factors caused by manual adjusting and radial undercut caused by workpiece deformation are eliminated, and accordingly the machining accuracy and the workpiece quality are improved. An adjuster is independent of a machine tool control system, a tool path planed by an existing program cannot be affected, the programming time is saved greatly, and accordingly the production efficiency is improved.

The invention discloses a thermo-mechanical load simulation and error detection system and method for a machine tool cutting machining process. The machine tool thermo-mechanical load simulation and error detection system comprises a machine tool working table, a spindle core rod, a controller, a control system, a cutting thermal simulation device, a one-way cutting force simulation device and a machine tool feeding system heat source simulation device, wherein the cutting thermal simulation device and the one-way cutting force simulation device are arranged on the machine tool working table. According to the thermo-mechanical load simulation and error detection system and method for the machine tool cutting machining process, a mechanism of a machine tool does not need to be dismounted from the machine tool, so that an experimental situation more accords with the actual working condition; and meanwhile, an error value can be fed back to a compensation module in a machine tool control system, the machining error can be decreased, and the machining precision can be improved.

The invention discloses an on-machine non-contact workpiece contour detection system of a cycloid gear grinder. The on-machine non-contact workpiece contour detection system of the cycloid gear grinder comprises a machine tool rotary table, a machine tool bed, a CCD camera, a telecentric lens, a projector, a machine tool control system and an upper computer. The machine tool rotary table is installed on the machine tool bed at the bottom, and workpieces are clamped on the machine tool rotary table through central positioning holes. The CCD camera and the projector are fixed to the machine toolbed on the left side. The machine tool control system is connected with the machine tool rotary table in a circuit mode to be used for controlling the rotary table to rotate so as to measure workpiece contours at different positions. The CCD camera is connected with the upper computer in a circuit mode to be used for transmitting the photographed image to the upper computer for processing. The invention further discloses an on-machine non-contact workpiece contour detection method of the cycloid gear grinder. The on-machine non-contact workpiece contour detection system and method of the cycloid gear grinder have the characteristics of low cost, high efficiency and high precision, can be widely applied to various occasions of on-machine non-contact detection and processing, and have greatpotential.

The invention discloses a grinding wheel sharpening finishing image visual monitoring device, and the device comprises an image collection apparatus which is used for taking a picture of three-dimensional shape of a surface micro-abrasive-particle edge of a grinding wheel; an image and machine vision processing system which enables an abrasive particle three-dimensional point cloud shape to be displayed through a three-dimensional reconstruction method; and a CNC integrated control system which is used for observing the condition of the micro-abrasive-particle edge according to the abrasive particle three-dimensional point cloud shape and adaptively adjusting the sharpening finishing technological parameters of the grinding wheel, thereby achieving the online monitoring and intelligent control of the sharpening finishing of the grinding wheel. The invention also provides a grinding wheel sharpening finishing image visual monitoring method. The device employs a high-definition CCD camera and the image and machine vision processing system, extracts the features of the abrasive particle three-dimensional point cloud shape of the surface of the grinding wheel, reconstructs the three-dimensional point cloud shape, restores the condition of the micro-abrasive-particle edge, feeds back the condition to a machine tool CNC control system, adaptively adjusts the sharpening finishing technological parameters, and achieves the online monitoring and intelligent control of the sharpening finishing of the grinding wheel.

The invention relates to the technical field of automatic machine tool control. The embodiment of the invention provides a truss type mechanical arm control method and system for automatic feeding anddischarging of a machine tool. The method comprises the steps that three-dimensional coordinates of a feeding point and three-dimensional coordinates of a reloading point are obtained, and the machine tool sets zero-point three-dimensional coordinates for multiple layers of material discs; on the basis of the three-dimensional coordinates of the feeding point, the three-dimensional coordinates ofthe reloading point and the zero-point three-dimensional coordinates, a plurality of middle position coordinates are generated; and according to the multiple middle position coordinates, a mechanicalarm is controlled to replace machined workpieces at the reloading point with to-be-machined workpieces conveyed from the feeding point. Accordingly, automatic control over feeding and discharging ofthe machine tool in the multi-axis three-dimensional space is achieved; meanwhile, since only two points need to be given, the programming testing process is simple, and testing personnel can easily conduct operation; and furthermore, in the embodiment, the models and the types of machine tools are not limited, so that the technical scheme has high universality.

A thermal displacement state (target thermal displacement state) in which thermal displacement of a machine tool is saturated when the machine tool is operated based on a machining program is previously stored, and a warm-up operation pattern of a motor is determined so as to approach the target thermal displacement state. The motor is driven based on the warm-up operation pattern and the warm-up operation of the motor is stopped if the thermal displacement state of the machine tool is within a predetermined range.

A minimum five-axis machine tool (11) has first to third linear feed axes orthogonal to each other as well as first and second rotational feed axes orthogonal to each other, wherein a rotational axis line of the first rotational feed axis C is parallel to the first linear feed axis Z. While a tool T and a work W are moved relatively through the second and third linear feed axes X, Y to perform machining of the work W by means of the tool T, the machine tool controls the first rotational feed axis C such that a rotational axis line of the second rotational feed axis A is perpendicular to the direction of relative movement of the perpendicular to the direction of relative movement of the tool T to the work W, and controls a power supplied to a motor for the second rotational feed axis A when a torque around the second rotational feed axis A exceeds a specified threshold.

The invention discloses a lightweight wall plate laser-inducing flexible forming system and method. The system comprises a photograph measurement unit, a laser device, an infrared thermometer, an intelligent cooling unit, a machine tool workbench, a machine tool scanning drive mechanism, a data analysis control unit and a machine tool control unit. In each scanning line, a laser beam irradiates a lightweight wall plate plane piece to be formed, the temperature of a lightweight wall plate is measured, and cooling control is carried out according to the measured temperature so that the lightweight wall plate plane piece to be formed can bend and deform in the direction of the laser beam. The deformation of the lightweight wall plate plane piece is measured, whether the deformation of the lightweight wall plate plane piece reaches the set value or not is judged, and if the set value is reached, the laser irradiation of the next scanning line is carried out; and if the set value is not reached, the laser irradiation of the scanning line is carried out again. Online measurement and real-time automatic control can be achieved, accurate forming of the lightweight wall plate is achieved, and the problems that the lightweight wall plate is large in forming difficulty, low in efficiency and the like are solved.

The invention relates to an induction shape correcting and die quenching and tempering technological method and equipment for annular parts. The method includes the steps that a workpiece is fed; an inductor is used for heating; a core die is corrected; an upper die and a lower die are used for pressure quenching; a core die is driven to conduct induction tempering; the core die is separated; and the workpiece is discharged. The equipment includes an induction heating power source, a quenching machine tool conducting actions of the whole process, a cooling water circulation device and a quenching liquid circulation device. The heating inductor, a quenching liquid injecting box, an upper pressing die, a lower pressing die, the core die and other parts, an executing mechanism for movement of the parts and a workpiece clamping mechanism are located on a framework of the quenching machine tool. The induction heating power source, the cooling water circulation device and the quenching liquid circulation device are connected with the heating inductor, the upper pressing die, the lower pressing die, the core die, the quenching liquid jetting box and a drive mechanism of the quenching liquid jetting box of the machine tool through pipelines, and program actions are completed through a control system of the machine tool. By means of the induction shape correcting and die quenching and tempering technological method and equipment for the annular parts, heat treatment deformation of the annular parts can be effectively corrected and limited, and the qualification rate of the products is increased.