The present invention relates to a scraper (14) for scraping a surface of a machine tool having a wear-indicating device (18, 20, 24, 30) for the scraper lip (16) of the scraper. At least one signal line (18) is embedded in the scraper lip (16) in such a manner that, upon reaching the wear limit (G), at least one section of the signal line (18) is exposed.

A processing apparatus includes a chuck table having a holding surface for holding a workpiece; a horizontal moving mechanism that moves the chuck table in a horizontal direction and is supplied with a first oil; and a vertical moving mechanism that moves a processing unit in a vertical direction and is supplied with a second oil. Before mounting the workpiece on the holding surface, the holding surface is imaged by a camera while being irradiated with light, and it is examined whether or not the picked-up image is emitting light. If there is a light-emitting part in the picked-up image, it is determined that oil is adhered to the light-emitting part.

A machine tool includes a rotation indexing device. The rotation indexing device includes a frame accommodates a rotary shaft, a drive motor rotationally drives the rotary shaft, a drive transmission mechanism accommodated in a space inside the frame, and a detection device. The drive transmission mechanism includes a gear mechanism, and the space includes one or more storage parts for storing lubricating oil. The detection device detects a height position of an oil level of the lubricating oil, and is provided on a one-to-one basis with respect to a detection target storage part, which is set as a detection target, of the one or more storage parts.

A method of providing cueing signals to a user of a tool. Engagement sensors are positioned, for obtaining engagement data regarding the user's engagement with the tool. The engagement data is compared to a preselected acceptable range of engagement data. If the engagement data is outside the preselected acceptable range of engagement data, then an alert signal is transmitted to an alert device. Upon receipt of the alert signal, the alert device generates a cueing alert signal to indicate that the engagement data is outside the preselected acceptable range.

An abnormality diagnostic device for a feed axis mechanism diagnoses an abnormality occurrence and an abnormal portion of the feed axis mechanism. The feed axis mechanism transmits a rotation of a motor to a ball screw coupled by a coupling to rotate the ball screw. The abnormality diagnostic device includes a resonance frequency measuring unit and a diagnosis unit. The resonance frequency measuring unit measures a resonance frequency at a plurality of stroke positions within a stroke range of the feed axis mechanism. The diagnosis unit identifies the abnormal portion based on a relationship between the stroke positions and change amounts relative to a standard value of the measured respective resonance frequencies.

An accuracy analysis system for a machine tool includes: a control unit, a data server, a data communication unit, a data analyzer, a corrected machine accuracy calculation unit, and a data display unit. The control unit stores preliminarily obtained accuracy data regarding a machine accuracy, compensation data for compensating for an error, and machine information. The data communication unit transmits the accuracy data, the compensation data, and the machine information to the data server. The data analyzer uses the accuracy data and the compensation data in the data server to obtain a compensation data correction value as a correction value of the compensation data and expected accuracy data when the compensation data correction value is applied. The corrected machine accuracy calculation unit calculates a post-correction machine accuracy from the expected accuracy data. The data display unit displays the post-correction machine accuracy calculated by the corrected machine accuracy calculation unit.

A machine tool (1) includes: a door (5) that opens and closes an opening in a shield cover (3) surrounding a machining chamber; an electromagnetic lock device (6) that includes dual-system switches that detect an open/closed state of the door (5), and that can lock the door (5) in a closed state; a door position detection unit that detects a position of the door (5); and a report unit that monitors states of the dual-system switches of the electromagnetic lock device (6) and suggests maintenance of the door (5) when the states differ from each other for a predetermined period of time and when the door position detection unit detects that the door (5) is not in a closed position.

The low profile of the flexible tooling system disclosed allows for flexible tooling to be added to nearly all CNC machines with an accommodating z-axis height and allows easier relocation of the system from one CNC machine to another. The system includes one or more pods, each of the pods of the system replacing the function of four independent actuators of earlier systems but operating with a shared mechanical frame. Arranging the mechanism into groups of four allows for greater density of part support spacing, minimizes cable requirements, and allows for air, vacuum, and vacuum sensor requirements be localized on each pod. The pods allow for part supports to be spaced as close as 6″ in the x and y axis. An increased variable position assembly density allows for greater flexibility to hold complicated parts.

A machine tool for detecting a brake failure more reliably in a mechanism that stops the rotation of a vertical shaft by at least two brakes includes a ball screw extended in a vertical direction, a driving motor that rotates the ball screw, a movable part that vertically moves along the ball screw in accordance with the rotation of the ball screw driven by the driving motor, at least two brakes that prevent a fall of the movable part while power supply to the driving motor is stopped, a brake controller that releases at least one of the at least two brakes while power supply to the driving motor is stopped, and a detector that detects presence/absence of a fall of the movable part or a fall distance of the movable part resulting from the release of the at least one brake, thereby detecting a trouble of an unreleased one of the at least two brakes.

A method for monitoring the machine geometry of at least one gear cutting machine (10), having the following steps: a) measuring a workpiece in a measuring device (20) in order to determine actual data, wherein a workpiece is concerned which was previously machined in the machine (10) on the basis of specification data (VD, ΔVD, MD, ΔMD); b) correlating the actual data with the specification data (VD, ΔVD, MD, ΔMD) in order to thus determine the deviation of a geometric setting of at least one axis of the machine (10); c) storing the deviation of the geometric setting; d) repeating the steps a)-c) after the machining of further workpieces in the machine (10); e) performing a statistical evaluation of several of the stored deviations in order to determine a geometric change in the axis of the machine (10) by considering a predetermined condition and/or rule.