A high-speed precision interrupted ultrasonic vibration cutting method includes steps of: (1) installing an ultrasonic vibration apparatus on a machine tool, and stimulating a cutting tool to generate a transverse vibration, so as to realize varieties of machining processes; (2) realizing an interrupted cutting process by setting cutting parameters and vibration parameters to satisfy an interrupted cutting conditions; and (3) turning on the ultrasonic vibration apparatus and the machine tool, and starting a high-speed precision interrupted ultrasonic vibration cutting process. High-speed precision interrupted ultrasonic vibration cutting is able to be realized through the above steps during machining of difficult-to-machine materials in aviation and aerospace fields. A cutting speed is enhanced significantly, and exceeds a critical cutting speed of a conventional ultrasonic vibration cutting method and an elliptical ultrasonic vibration cutting method and even a high speed range of a traditional cutting method.

A method for selecting a milling cutter, which method makes it possible to select a milling cutter on the basis of a part to be machined such that the cutting force is constant while the part is being machined.

A method for selecting a milling cutter, which method makes it possible to select a milling cutter on the basis of a part to be machined such that the cutting force is constant while the part is being machined.

A machining tool assembly is provided for machining a blank to form a firearm lower receiver. The assembly includes a pair of side plates positionable on opposed sides of the blank to capture the blank therebetween. A template plate having a template aperture is adapted to be removeably attachable to the side plates. The template aperture is aligned with a top surface of the blank and is adapted for machining a cavity within the blank having a peripheral contour complimentary to a peripheral contour of the template aperture. A centering mechanism is adapted to be removeably attachable to the template plate, with the centering mechanism including an opening aligned with a corresponding void formed on the blank to align the blank with the template plate.

A milling tool according to the present disclosure includes a tool body including an outer circumferential portion having an upper end and a lower end, and an end portion located at the lower end of the outer circumferential portion. An insert including a cutting edge is attached to the tool body so that the cutting edge protrudes from the end portion. Further, the milling tool according to one aspect of the present invention includes a cover surrounding the outer circumferential portion, with a gap lying between the outer circumferential portion and the cover. The tool body includes a first jetting port in the outer circumferential portion, the first jetting port being configured to allow a coolant to jet into the gap between the outer circumferential portion of the tool body and the cover.

A milling tool according to the present disclosure includes a tool body including an outer circumferential portion having an upper end and a lower end, and an end portion located at the lower end of the outer circumferential portion. An insert including a cutting edge is attached to the tool body so that the cutting edge protrudes from the end portion. Further, the milling tool according to one aspect of the present invention includes a cover surrounding the outer circumferential portion, with a gap lying between the outer circumferential portion and the cover. The tool body includes a first jetting port in the outer circumferential portion, the first jetting port being configured to allow a coolant to jet into the gap between the outer circumferential portion of the tool body and the cover.

A machining tool assembly is provided for machining a blank to form a firearm lower receiver. The assembly includes a pair of side plates positionable on opposed sides of the blank to capture the blank therebetween. A template plate having a template aperture is adapted to be removeably attachable to the side plates. The template aperture is aligned with a top surface of the blank and is adapted for machining a cavity within the blank having a peripheral contour complimentary to a peripheral contour of the template aperture. A centering mechanism is adapted to be removeably attachable to the template plate, with the centering mechanism including an opening aligned with a corresponding void formed on the blank to align the blank with the template plate.

A workholding device for positioning a workpiece on a machining equipment, comprising a sacrificial support for supporting the workpiece, a workpiece holding layer formed of a curable material applied onto the sacrificial support, a curable material collector, a curing processing unit which comprises a controller and a curing rate regulator, and a bearing assembly for supporting the sacrificial support, the curable material collector and the curing processing unit, wherein the curable material is a solid which is viscous before curing and elastic after curing and has a melting point above 1000? C.

The present invention provides a deburring device capable of removing a burr with high precision. A deburring device 1 for removing a burr formed on a joint of metal members joined together by friction stir welding (FSW) includes: a deburrer including a cutting blade that cuts the burr formed on the joint, a drive mechanism that drives the cutting blade to rotate, and a guide roller that has a diameter equal to or smaller than the cutting blade, is able to rotate coaxially with the cutting blade, and makes contact with a surface of the joined metal members at the joint to control the amount of cutting by the cutting blade; a mover that moves the deburrer along the joint; and an orientation controller that controls an orientation of the deburrer according to the shape of the surface of the joined metal members.

The present invention provides a deburring device capable of removing a burr with high precision. A deburring device 1 for removing a burr formed on a joint of metal members joined together by friction stir welding (FSW) includes: a deburrer including a cutting blade that cuts the burr formed on the joint, a drive mechanism that drives the cutting blade to rotate, and a guide roller that has a diameter equal to or smaller than the cutting blade, is able to rotate coaxially with the cutting blade, and makes contact with a surface of the joined metal members at the joint to control the amount of cutting by the cutting blade; a mover that moves the deburrer along the joint; and an orientation controller that controls an orientation of the deburrer according to the shape of the surface of the joined metal members.