A cutting system includes a cutting tool for milling, a plurality of sensors, and a processor, wherein the cutting tool performs a cutting process using two or more cutting blades, the plurality of sensors measure a physical quantity indicating a state regarding a load of the cutting tool at a time of the cutting process, and the processor generates, based on measurement results of the sensors at a plurality of measurement timings, two-dimensional data for each measurement timing, the two-dimensional data regarding the load in two directions on a plane perpendicular to a rotation axis of the cutting tool, classifies pieces of the generated two-dimensional data into any of a plurality of unit regions, a number of which is equal to or greater than a number of the cutting blades on the plane, and detects, based on the two-dimensional data for each unit region, an abnormality of the cutting blade.

A measurement device for a chip removing machine, and methods of obtaining frequency response functions, obtaining stability charts and selecting operational parameters of a chip removing machining tool are disclosed. The device includes an engagement portion at the rear end for engagement with the machine and a measurement portion at the front end. The measurement portion is without a tool tip and includes a planar front end surface perpendicular to the centre axis. The front end surface has a coupling point aligned with the centre axis for receiving mechanical excitation. The front end surface further includes a plurality of seats for receiving one accelerometer each for measuring a response of the received mechanical excitation. When an accelerometer is received in one of the seats, and abutts against three contact surfaces thereof, it is positioned and oriented three dimensionally and around three axes of rotation in relation to the coupling point.

The present application provides an on-machine point cloud detection and compensation method for processing complex surfaces, which comprises: step S1, installing a detecting and scanning actuator on an ultrasonic rolling machine tool; step S2, installing a processed workpiece on the chuck which is scanned by the detecting and scanning actuator to obtain the point cloud data of the workpiece in a coordinate system of detecting and scanning actuator, which is converted into the point cloud data of the workpiece in a coordinate system of machine tool; step S3, processing the point cloud data of the workpiece in the coordinate system of machine tool; step S4, obtaining and compensating the shape error feature of the workpiece according to theoretical design data of the processed workpiece and processed point cloud data of the workpiece in the coordinate system of machine tool. The accuracy and efficiency of complex surface strengthening is improved in the present application.

Provided is a control device for a machine tool that exchanges a tool and machines a work piece on the basis of a machining program, said control device being provided with a machining program analysis unit that analyzes a machining program and extracts, from the machining program, measurement-related information relating to a dimensional measurement of a tool, and with a measurement program generation unit that, on the basis of the measurement-related information and basic tool information input in advance, generates a measurement program for measuring the dimensions of the tool.

To provide an automatic chuck greasing device in a crankshaft miller capable of ensuring chuck greasing without missing its timing and preventing failure to remove excess grease by wiping. In a crankshaft miller (1) which cuts, using a rotary cutter (7), a workpiece (2) held by a chuck (3), the automatic greasing device includes: a grease supply device (25) for supplying grease to sliding parts inside a chuck (3) including one between a chuck body (3a) and a chuck jaw (3b) in response to a greasing command signal outputted by a greasing command signal output unit (35) which has received a rotary cutter replacement command signal as a trigger signal from a rotary cutter replacement command signal output unit (33); and a notification means (30a, 30b) for notifying that a cutter (7) needs replacement in response to a notification command signal outputted by a notification command signal output unit (36) which has received the rotary cutter replacement command signal as the trigger signal from a rotary cutter replacement command signal output unit (33).

Tool bodies, tools and machines for operating the tool include electronic circuits for providing data, collecting data, analyzing data and for controlling machines based on such data. Tool bodies and tools may include electronic circuits having data collecting sensors, which may be embedded in a housing with the electronic circuit and/or positioned outside of such a housing. Sensors include temperature sensors, motion sensors, strain sensors, moisture sensors, electrical resistance sensors, position sensors, antennas, and other components.

The present invention is directed to an automatic impact inducing device for inducing an impact on an object wherein, in particular on a machine tool.

A machine tool includes: a spindle that allows a tool to be detachably mounted thereon; a tool changing device that holds a plurality of the tools, and attaches and detaches any of the tools to and from the spindle; a date and time storage unit that stores date and time when operation of the spindle is stopped last; and a calculation unit that calculates unused time of the spindle on the basis of the date and time stored in the date and time storage unit, when the tool is to be detached from the spindle, wherein in a case where the unused time calculated by the calculation unit is longer than a predetermined threshold value, the tool changing device performs detaching motion of the tool from the spindle for longer time compared to a case where the calculated unused time is at or less than the threshold value.

A tool received in a tool holding fixture of a tool holder includes a tool shank defining a recess and a force sensor arranged in the recess. During operation of the tool, the force sensor measures a tool force exerted by the tool shank onto the tool holder. A method for measuring a tool force by using the tool includes the steps of: arranging the force sensor between the tool shank and the tool holding fixture; clamping the force sensor by means of a clamping device of the tool holding fixture; operating the tool; and using the force sensor to measure the tool force exerted by the tool shank onto the tool holder.

The present invention provides a cross-axis and cross-point modal testing and parameter identification method for predicting the cutting stability, which is used to improve the accuracy of existing prediction methods of cutting stability. The method firstly installs a miniature tri-axial acceleration sensor at the tool tip, and conducts the cross-axis and cross-point experimental modal tests respectively. The measured transfer functions are grouped according to different measuring axes, and the dynamic parameters are separately identified from each group of transfer functions. Then, the contact region between the cutter and workpiece is divided into several cutting layer differentiators. After that, together with other dynamic parameters, all the parameters are assembled into system dynamic parameter matrices matching with the dynamic model. Finally, dynamic parameter matrices including the effects of cross-axis and cross-point model couplings are obtained. Moreover, the acceleration sensor in the method only needs to be installed once.