In an inspection master, an upper-surface oblique reference portion opened obliquely upward is provided on an upper surface of a master main body including the upper surface and a peripheral surface. In an inspection master, a peripheral-surface oblique reference portion opened obliquely upward is provided on a peripheral surface of a master main body including an upper surface and the peripheral surface. In either of those cases, an upper-surface vertical reference portion opened vertically can be provided on the upper surface, and a peripheral-surface lateral reference portion opened laterally can be provided on the peripheral surface. Further, a reference ball for use in obtaining an inclination angle of the master main body inclined during accuracy inspection for a five-axis processing machine is provided at a center portion of the upper surface.

This disclosure provides a machine tool adjustment method and system thereof. The machine tool adjustment method includes the following steps: enabling a machine tool to perform a circular test; obtaining a measured error value E.sub.m from a measuring instrument, and the measured error value E.sub.m is defined by the difference between the actual circular trajectory and the preset circular trajectory during the circular test; determining an error condition of the tool machine from the measured error value E.sub.m; determining whether the error condition is less than a predetermined criteria; if not, defining a compensation parameter according to the error condition and enabling the machine tool to perform another circular test according to the set compensation parameter until the error condition is less than the predetermined criteria; and if yes, ending the circular test and the machine tool adjustment is finished.

In a method for referencing a workpiece (2) arranged in a machine tool, an image of the workpiece (2) is first of all created using a camera device (5) of the machine tool and is then displayed on a display device (6). An X-Y display coordinate (9) is selected by a user using the displayed image. A Z reference coordinate is then determined in an automated manner. An X-Y-Z starting coordinate (7) can be calculated on the basis of the Z reference coordinate determined in an automated manner and the X-Y display coordinate (9) input by the user. A measuring probe (8) of the machine tool is then moved in an automated manner to the X-Y-Z starting coordinate (7) and the X-Y-Z reference coordinate of the workpiece (2) is determined on the basis of the position of the measuring probe (8), as predefined by the X-Y-Z starting coordinate (7), by means of a suitable determination method using the measuring probe (8). In order to determine the Z reference coordinate, the measuring probe (8) is moved through the region which can be captured by the camera device (5) along a viewing beam (16) starting from the camera device (5) in the direction of a target point (26) until the measuring probe (8) touches the workpiece (2).

The invention of a device has four threaded bolts that engage cooperatively threaded apertures in a base. These thread bolts hold the device in a temporary yet stationary position. The device has non-magnetic metal which allows test indicators to display accurate results free from any magnetic fields. The device has a precision bore of a nominal size. The radial value of the nominal size precision bore provides for mathematical calculation of the spindle centerline to work piece distance for measuring. The device has undercuts on both of its sides to aid in removing by hand. These undercuts allow the device to pivot from its stationary position for removal without damaging the planar surface. Alternatively, the device has four magnetic inserts, pocketed upwardly from the bottom surface.

A method for optimizing the execution of automated drilling systems controlled by a numerical control, NC, machine, wherein the NC machine performs the following steps: (i) identifying each drill executed by an automated drilling tool at first drilling event (t); storing a theoretical position of each executed drill at the event (t); (iii) calculating a learned position using a machine learning model and based on the stored theoretical position at the event (t); (iv) estimating an intermediate position by applying a tendency statistical function, and (v), if the difference between the intermediate position and the learned position is less than a pre-configured threshold, using the intermediate position for the drilling tool to position a next drill and execute it at a subsequent event (t+1).

A positioning device for positioning a drilling tool of a drilling apparatus relative to a workpiece includes a cage mounted to the drilling apparatus such that the cage at least partially surrounds the drilling tool. The cage includes an end portion that includes an alignment surface that is configured to be engaged in physical contact with a workpiece surface of the workpiece. The alignment surface of the cage is oriented relative to a centerline axis of the drilling tool such that the centerline axis extends approximately normal to the workpiece surface when the alignment surface of the cage is in contact with the workpiece surface. The positioning device also includes a laser projector mounted to the cage such that the laser projector is configured to project an illuminated dot onto the workpiece surface that indicates where the centerline axis of the drilling tool intersects the workpiece surface.

Provided is a method for machining a component by removing material, in particular by removing chips, within a groove provided in the component, in which method: spatially resolved measurement data, which include information about faults, in particular cracks in the component, are provided, and machining of the component by removing material, in particular by removing chips, is performed by means of at least one machining tool mounted for movement in a motorized manner, in particular for translation and/or pivoting in a motorized manner, and is controlled in accordance with the provided measurement data preferably in an automated manner with respect to the positions on the component at which the at least one machining tool is brought into engagement with the component in order to remove material in the region of faults that are present.

An error measurement method for a machine tool measures an error in a machine tool that includes two or more translational axes, a table, and a spindle head. The error measurement method includes installing a masterwork having a plurality of targets on the table and detecting a position of each of the targets using a sensor mounted to the spindle head to acquire a measured value regarding the position of each of the targets and to acquire an error value regarding the position of each of the targets using each of the acquired measured values and a preliminarily acquired calibration value regarding the position of each of the targets. The error measurement method further includes calculating at least one disturbance index value indicative of a degree of disturbance in the measurement for each of the targets, and determining whether the disturbance index value exceeds a preliminarily set threshold.

An improved jig for manufacturing a firearm lower receiver is comprised of a power tool mount; an adapter; a guide plate with plate screws; a rear support with mounting screws; a front support; and at least one of a carriages with at least one locating pin. A guide plate is disposed below the top surface of a lower receiver in conjunction with an adapter. The jig is a universal fitment and includes a bearing to support a rotary tool and at least one guiding feature can be used to facilitate in the guidance of the rotary tool without placing the rotary tool in direct contact with any of the guidance features. A removable locating pin is situated a long the front and rear takedown pin holes of a firearm receiver that is not threaded and is provided with at least one of a pull, string or other handle.

An estimating device estimating a rotary axis position of a workpiece includes first and second position acquisition units acquiring tool positions in first and second directions, a load acquisition unit acquiring first and second directional loads of the tool in the first and second directions, a determination unit determining whether or not the first and second directional loads each are a threshold or less, a turning control unit performing a lathe turning on the workpiece until the first directional load becomes the threshold or less and thereafter performing a lathe turning thereon until the second directional load becomes the threshold or less, and an estimating unit estimating the rotary axis position based on a first directional position of the tool when the first directional load has become the threshold or less, and a second directional position thereof when the second directional load has become the threshold or less.