A display unit which displays information obtained from a machine tool that executes a machining program including a plurality of blocks as a plurality of program blocks identified by sequence numbers, includes: a data acquisition unit which acquires state information that indicates the state of the machine tool being operated as an amount of variation and a time axis, and timing information which indicates predetermined timing of the machining program executed by the machine tool; a chronological information generation unit which generates chronological information based on the state information and the timing information acquired; a superimposition unit which makes the timing indicated in the timing information coincide and which superimposes a plurality of pieces of the chronological information; and a display portion which displays the pieces of chronological information which are superimposed.

A press machine includes a display unit which displays a first image in a circular shape corresponding to a rotation of an eccentric mechanism and representing one stroke of slide operation and a second image in a circular-arc shape corresponding to an operation of an attachment device interlocked with the press machine, and an operation unit which receives an input operation. The first image indicates at least one slide operation region. The second image is placed concentrically with the first image in relation to the slide operation region. The second image has opposed ends each allowed to move in response to the input operation in a direction in which the second image extends.

A press machine includes a display unit which displays a first image in a circular shape corresponding to a rotation of an eccentric mechanism and representing one stroke of slide operation and a second image in a circular-arc shape corresponding to an operation of an attachment device interlocked with the press machine, and an operation unit which receives an input operation. The first image indicates at least one slide operation region. The second image is placed concentrically with the first image in relation to the slide operation region. The second image has opposed ends each allowed to move in response to the input operation in a direction in which the second image extends.

A control system of a machine tool which machines a work includes: a numerical control device which controls the drive axis of the machine tool based on control data; a machined surface measurement device which measures the machined surface of the work; and a data processing device, and the data processing device includes a drive axis control data acquisition portion which acquires, from the numerical control device, the chronological control data when the work is machined; a machined surface measurement data acquisition portion which acquires spatial machined surface measurement data after the machining of the work measured by the machined surface measurement device; and a data-associating processing portion which associates the chronological control data acquired by the drive axis control data acquisition portion and the spatial machined surface measurement data acquired by the machined surface measurement data acquisition portion with each other.

A control system of a machine tool includes an analysis device, the analysis device includes acquisition portions which acquire chronological control data when a work is machined and which acquire spatial machined surface measurement data after the machining of the work, a storage portion which stores the control data and the machined surface measurement data, a data-associating processing portion which associates the control data and the machined surface measurement data with each other in two machining directions, a machined surface failure detection portion which detects a failure on the machined surface of the work and a location thereof based on the machined surface measurement data in the two machining directions and an identification portion which identifies a drive axis that causes the failure from the detected failure and the machining direction of the control data corresponding to the detected failure location.

A display unit which displays information obtained from a machine tool that executes a machining program including a plurality of blocks as a plurality of program blocks identified by sequence numbers, includes: a data acquisition unit which acquires state information that indicates the state of the machine tool being operated as an amount of variation and a time axis, and timing information which indicates predetermined timing of the machining program executed by the machine tool; a chronological information generation unit which generates chronological information based on the state information and the timing information acquired; a superimposition unit which makes the timing indicated in the timing information coincide and which superimposes a plurality of pieces of the chronological information; and a display portion which displays the pieces of chronological information which are superimposed.

A waveform display device includes a position information acquisition unit for acquiring position information of a drive shaft of a machine tool in a time series manner, a time designation unit for designating a time section that is a display target in a time series of the position information, a tangent direction speed calculation unit for calculating a tangent direction speed of a tool tip end point of the machine tool based on the position information and configuration information of the machine tool, a distance calculation unit for converting the time section into a distance between two points on a machined surface of the machine tool based on the tangent direction speed, and a display unit for displaying the distance between the two points.

A machine tool, which performs machining on a workpiece using a tool, is equipped with a servo motor configured to cause axial movement of the tool or the workpiece, an imaging device configured to capture an image of the tool or the workpiece at a specified imaging magnification, a display unit configured to display the image captured by the imaging device, a speed compensating unit configured to compensate a command speed of the tool or the workpiece on the basis of the imaging magnification and thereby generate a compensated command speed, and a motor control unit configured to control the servo motor in a manner so that the tool or the workpiece is axially moved at the compensated command speed.

A control system of a machine tool includes an analysis device, the analysis device includes acquisition portions which acquire chronological control data when a work is machined and which acquire spatial machined surface measurement data after the machining of the work, a storage portion which stores the control data and the machined surface measurement data, a data-associating processing portion which associates the control data and the machined surface measurement data with each other in two machining directions, a machined surface failure detection portion which detects a failure on the machined surface of the work and a location thereof based on the machined surface measurement data in the two machining directions and an identification portion which identifies a drive axis that causes the failure from the detected failure and the machining direction of the control data corresponding to the detected failure location.

A control system of a machine tool which machines a work includes: a numerical control device which controls the drive axis of the machine tool based on control data; a machined surface measurement device which measures the machined surface of the work; and a data processing device, and the data processing device includes a drive axis control data acquisition portion which acquires, from the numerical control device, the chronological control data when the work is machined; a machined surface measurement data acquisition portion which acquires spatial machined surface measurement data after the machining of the work measured by the machined surface measurement device; and a data-associating processing portion which associates the chronological control data acquired by the drive axis control data acquisition portion and the spatial machined surface measurement data acquired by the machined surface measurement data acquisition portion with each other.