Abstract:
A method of rotational milling of a thread on a workpiece and including providing a device having a rotatable workpiece spindle for supporting the workpiece and a rotatable milling cutter spindle for supporting a thread milling cutter, and displacing axially the workpiece spindle and the milling cutter relative to each other by a distance shorter than a length of the thread, while rotating the workpiece spindle and the milling cutter spindle with respective rotational speeds a ratio of which is not equal to 1; and displacing radially the workpiece spindle and the milling cutter spindle relative to each other.
Abstract:
A rotatable multi-operation tool for chip removing machining, including a plurality of replaceable cutting inserts of different types, and a basic body that is rotatable around a center axis and includes a rear end and a front end from which there is extending rearward an envelope surface in which at least one chip space, delimited by two opposite side surfaces, is countersunk, which opens in the envelope surface and in the front end. A first cutting insert is mounted in a first insert seat that is formed in one side surface of the chip space and situated in the immediate vicinity of the front end and included in a cavity that opens in the front end for the cutting insert to partly protrude axially forward from the front end. A second cutting insert, of a type other than the first cutting insert, is mounted in a second insert seat, which is formed in the same side surface as the first insert seat and situated axially behind the first insert seat. The second insert seat is included in a cavity that opens in a part of the envelope surface.
Abstract:
Rotatable multi-operation tool including replaceable cutting inserts of different types, and a basic body rotatable around a center axis with rear and front ends from which there is extending rearward an envelope surface in which at least one chip space is countersunk, which opens in the envelope surface and in the front end. A first cutting insert type is mounted in a first insert seat formed in one side surface of the chip space in the immediate vicinity of the front end and included in a cavity opening in the front end for the cutting insert to partly protrude axially forward from the front end. A second cutting insert type is mounted in a second insert seat formed in the same side surface as the first insert seat and situated axially behind the first insert seat and included in a cavity opening in a part of the envelope surface.
Abstract:
A method of orbital milling is performed using an orbital end mill, which has a cutting bit designed for orbital end milling. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
Abstract:
This invention relates generally to a thread cutting insert and more particularly to a thread cutting insert comprising a base and a threading portion. The threading portion has a first thread removal portion and a second thread removal portion for minimizing lead-in and exiting threads, and a cutting portion for cutting a plurality of internal threads. The principle use is for applications that have fluid communicated through the workpiece, such as a fuel injector.
Abstract:
A drilling and thread-milling tool for generating an internal thread in a workpiece, including a proximal shank portion attachable to a driving device for rotating the tool about a rotation axis thereof, and a distal cutting portion rotated with the shank portion about the rotation axis for generating the internal thread while the distal cutting portion is moved relative to the workpiece. The cutting portion has at least one thread-milling tooth on an outer circumferential surface thereof, each tooth having a configuration similar to that of the internal thread, and a height substantially equal to a depth of the internal thread. The cutting portion further has at least one end-cutting edge on a distal end face thereof so as to extend in a radial direction thereof, each end-cutting edge having a maximum diameter which is larger and smaller than a minor diameter and a major diameter of the thread-milling tooth.
Abstract:
A method of orbital milling is performed using an orbital end mill, which has a cutting bit designed for orbital end milling. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
Abstract:
A thread cutting milling tool comprises a shank with a working portion formed with a recess for receiving a thread cutting insert. The thread cutting insert has one edge formed with a line of thread-form teeth of identical profile. The thread cutting teeth project laterally for cutting engagement with a work-piece while the tool spins about its axis. The tool also orbits within or about a work piece, and in one orbit of the tool in a helical cutting path relative to the work piece a number of complete turns of the screw-thread are formed which is equal to the number of teeth of the insert in engagement with the work-piece. A secondary cutter carried on the thread cutting milling tool provides for formation of a pilot portion or counter bore on the work piece at an end of the screw thread. The pilot portion or counter bore provides for alignment of a threaded member which is to engage the screw thread. Also, the secondary cutter provides for formation of a blunt or scalloped full-thread starting end for the screw thread at the pilot portion. The blunt starting end for the screw thread is robust, resists damage, and resists cross threading.
Abstract:
A cutting tool includes a holder and at lest two first cutting inserts. The holder has a number of insert pockets in order to receive those cutting inserts. The cutting inserts are mounted in the holder such that their radially outermost portions lie substantially in an imaginary circle. The circle constitutes an effective diameter of the cutting tool. The cutting tool, in addition, includes at least one second cutting insert provided for a machining operation different from that of the first cutting inserts. The second cutting insert is spaced radially inwardly from the circle.
Abstract:
A cutting tool includes a holder and at lest two first cutting inserts. The holder has a number of insert pockets in order to receive those cutting inserts. The cutting inserts are mounted in the holder such that their radially outermost portions lie substantially in an imaginary circle. The circle constitutes an effective diameter of the cutting tool. The cutting tool, in addition, includes at least one second cutting insert provided for a machining operation different from that of the first cutting inserts. The second cutting insert is spaced radially inwardly from the circle.