Proposed is a torque measurement tester for testing hole-treating rotary tools used on hole treating operations such as drilling, tapping, reaming, countersinking, or the like under real operation conditions for determining the most optimal operations parameters. The torque measurement unit consists of a package of three sensor units, in which the first unit is connected to the frame of the tester via pressure sensors for measuring a thrust force acting in the Z-axis direction, the second sensor unit measures forces acting on the tool in the direction of the X-axis, and the third sensor unit measures forces acting in the Y-axis direction. All measurements are carried out irrespective of each other without mutual effect on the measurement data. The third unit resiliently supports the rotary tool relative to the second unit, while the second unit is connected to the first sensor unit.

Proposed is a method of determining optimal operation conditions for treating holes with a rotary tool by performing a hole treatment operation on a tester under various treatment conditions which are similar to the use of the tool in the industrial production on a real manufacturing equipment. The method consists of changing the treatment conditions and determining those operation parameters at which the treated hole is most optimally satisfies the given technical requirements. A criterion for evaluation of these optimal conditions is equality of pair forces acting on the rotary tool in the X- and Y-axis directions since such a situation prevents sidewise deviation of the tool from the direction of the thrust force applied in the Z-axis direction. The above condition is provided by the specific structure of the tester used for carrying out the method.

A method for drilling an element to be drilled by a drilling device and a cutting tool including drill margins and cutting edges. The method includes determining at least one load value representing overall drag due to internal friction of the drilling device and to friction of drill margins in the element to be drilled. Determining includes: stopping a drilling operation in progress; partial retraction of the cutting tool on a predetermined distance, the predetermined distance being chosen such that the cutting edges are no longer in contact with the element to be drilled; driving the cutting tool with predetermined cutting parameters; measuring at least one load value during the driving of the cutting tool with the cutting parameters before its cutting edges again come into contact with the element to be drilled and after stabilization of the load values, the measured load value representing the overall drag.

When machining small diameter holes, tool breakage and torque fluctuation at the machining point are detected. The machining method includes: measuring a reference thrust of a spindle when the spindle is fed from a machining feed start point to a machining end point in a direction in which the spindle extends under a machining condition without machining a workpiece; determining a threshold with respect to a feed coordinate based on the reference thrust; measuring a machining thrust of the spindle with respect to the feed coordinate while machining the workpiece; and comparing the machining thrust with the threshold with respect to the feed coordinate.

A honing machine (100) for honing rotationally symmetrical bore holes in workpieces has a honing spindle (120), which is movably mounted in a spindle housing (130), is rotatable about a spindle axis (122) by means of a rotary drive (140), can be driven in an oscillating manner parallel to the spindle axis by means of a lifting drive (150) and has at a tool-side end means for securing a honing tool arrangement (200), which has a tool body (220) carrying at least one honing element, which by axial displacement of a tool-side expanding element (330) that is axially displaceable inside the tool body can be infed radially in relation to a tool axis (214) and can be pressed by a pressing force against an inner side of a bore hole to be machined. Also provided is an expanding system with a machine-side expanding rod (310), which is guided inside the honing spindle (120), is axially displaceable by means of an expanding drive (320) in relation to the honing spindle and has a tool-side end portion (314), for coupling onto the tool-side expanding element (330). The honing machine has a control device (400) for controlling operating movements of the honing spindle and the expanding system and a force measuring system with a force sensor (500) for generating a sensor signal proportional to the pressing force and a transmission path for transmitting the sensor signal or a signal derived therefrom to the control device. The force sensor (500) is arranged in the region of the tool-side end portion (314) of the machine-side expanding rod (310) and is connected to the control device by way of a telemetric transmission path.

A machine tool which removal-machines a workpiece by means of a tool includes a retaining device (a workpiece spindle and a tailstock) that retains the workpiece, a support device (an in-machine robot) that supports the workpiece, in order to suppress deflection of the workpiece retained by the retaining device, and a control device that controls driving of the support device by force control having a force as a control target. Specifically, a supporting force by the support device and a machining force by a tool are measured, and the driving of the support device is controlled so that the supporting force is equal to the machining force.

A method for setting or monitoring operating parameters of a workpiece processing machine having a tool holder and means for moving a workpiece and the holder relative to one another along a first axis. During milling of the holder fitted with a workpiece and during application of the tool to a workpiece, values for at least one measured variable are registered and recorded. The variables include an axial force acting in a direction parallel to the first axis, a torque relative to the first axis or to an axis oriented parallel to the first axis, and bending torques or bending torque components according to direction and amount. The values are used to set the operating parameters with respect to an extended service life of the tool in conjunction with a processing time falling below a maximum machining time, monitoring tool wear or a machine error.

A method to ascertain a quality of a product formed by a subtractive manufacturing device from a workpiece includes: determining a deflection/test force relation for a deflection of the device; measuring an actually exerted machining force applied by the device to the workpiece; automatically determining a machining force reference for the actually exerted machining force; automatically evaluating whether the actually exerted machining force deviates from the machining force reference. If an actually exerted machining force deviates from the machining force reference, then the method uses the deflection/test force relation to automatically determine for the actually exerted machining force, at least one correction deflection of the device and automatically creating at least one corrected drive control signal to fully or partially reduce the correction deflection.

An automated container cutting system includes a cutting tool configured to cut a container and a force feedback sensor operatively connected to the cutting tool. The force feedback sensor is configured to measure resistive force exerted on the cutting tool. The automated container cutting system includes a processor communicatively coupled to the force feedback sensor. The processor is configured to receive resistive force data from the force feedback sensor and determine whether the cutting tool has penetrated through the wall of the container using the received resistive force data.

The invention relates to an insert holder for a tool for turning a machine tool, comprising an insert holder body (2), the head (22) of which is intended to receive a cutting insert (3), characterized in that at least two measurement recesses (4, 5) are provided in the insert holder body (2) on the side of the head (22), said measurement recesses (4, 5) being arranged symmetrically relative to the neutral fiber (6) of the insert holder body (2) and centered on the neutral fiber (6). The measurement recesses (4, 5) have, respectively, a planar bottom (41, 51) that is parallel to the direction (Y) of the component of the tangential cutting force of the insert holder to be measured, and parallel to the longitudinal direction (X, Z) of the insert holder body (2). The insert holder also comprises at least one first strain gauge (71, 72, 73, 74) configured such as to measure the change in shape of the planar bottom (41, 51) of at least one of the measurement recesses (4, 5).