An indexable milling cutting insert includes an opposed outside and inside, a periphery, and a plurality of homologous and alternately individually usable cutting edges, which are equidistantly spaced apart from a center axis, which extends between the outside and inside. The cutting insert includes a plurality of countersunk chip channels, which are delimited by bottoms and tangentially spaced-apart ridges, which individually include a cutting edge formed between a chip surface included in a first chip channel, and a clearance surface, which borders on a second chip channel.

Described herein is an orbital drilling system that includes an orbital drilling machine and a cutter. The orbital drilling machine includes a spindle and an eccentric rotation mechanism. The spindle is rotatable about a cutter axis. The eccentric rotation mechanism is coupled to the spindle and configured to orbit the spindle about an orbital axis, offset from the cutter axis. The cutter is co-rotatably coupled to the spindle and comprises a plurality of cutting edges, collectively defining a cutting diameter of the cutter. The cutting diameter of the cutter is adjustable.

Described herein is an orbital drilling system that includes an orbital drilling machine and a cutter. The orbital drilling machine includes a spindle and an eccentric rotation mechanism. The spindle is rotatable about a cutter axis. The eccentric rotation mechanism is coupled to the spindle and configured to orbit the spindle about an orbital axis, offset from the cutter axis. The cutter is co-rotatably coupled to the spindle and comprises a plurality of cutting edges, collectively defining a cutting diameter of the cutter. The cutting diameter of the cutter is adjustable.

A cutting edge adjustment device for a cutting tool for adjusting the position of a cutting edge of a cutting insert by causing movement of the cutting insert includes a rotary member for producing the movement. The rotary member is formed into a shape in which a substantially cylindrical portion having a constant radius and a cam portion having a cam face whose radius is gradually increased in a manner corresponding to the amount of the movement are arranged in a direction of a rotational center axis. The cam face is formed in such a manner as to have a section in which a radius is linearly increased, and consequently, the unit rotational angle of the rotary member on the rotational center axis is proportional to the unit movement amount of the cutting insert.

A cutting edge adjustment device for a cutting tool for adjusting the position of a cutting edge of a cutting insert by causing movement of the cutting insert includes a rotary member for producing the movement. The rotary member is formed into a shape in which a substantially cylindrical portion having a constant radius and a cam portion having a cam face whose radius is gradually increased in a manner corresponding to the amount of the movement are arranged in a direction of a rotational center axis. The cam face is formed in such a manner as to have a section in which a radius is linearly increased, and consequently, the unit rotational angle of the rotary member on the rotational center axis is proportional to the unit movement amount of the cutting insert.

A tool for a chip removing machining includes a basic body and a replaceable cutting insert, which is indexable by a cutting edge exchange mechanism. The cutting edge mechanism includes an ejector, which in a front part has an attachment for the cutting insert and interacts with a device for transforming a rectilinear, axial projection of the ejector into a simultaneous turning of the same. The cutting edge exchange mechanism includes a stop collar, which is fixedly anchored in relation to the basic body, and through which the ejector is movable back and forth and a carrier included in a rear part of the ejector. In addition, between the carrier and the stop collar, there is arranged a mechanical compression spring, which spaces the carrier from the stop collar. In addition, an autonomous cutting edge exchange mechanism is disclosed.

A tool for a chip removing machining includes a basic body and a replaceable cutting insert, which is indexable by a cutting edge exchange mechanism. The cutting edge mechanism includes an ejector, which in a front part has an attachment for the cutting insert and interacts with a device for transforming a rectilinear, axial projection of the ejector into a simultaneous turning of the same. The cutting edge exchange mechanism includes a stop collar, which is fixedly anchored in relation to the basic body, and through which the ejector is movable back and forth and a carrier included in a rear part of the ejector. In addition, between the carrier and the stop collar, there is arranged a mechanical compression spring, which spaces the carrier from the stop collar. In addition, an autonomous cutting edge exchange mechanism is disclosed.

Described herein is an orbital drilling system that includes an orbital drilling machine and a cutter. The orbital drilling machine includes a spindle and an eccentric rotation mechanism. The spindle is rotatable about a cutter axis. The eccentric rotation mechanism is coupled to the spindle and configured to orbit the spindle about an orbital axis, offset from the cutter axis. The cutter is co-rotatably coupled to the spindle and comprises a plurality of cutting edges, collectively defining a cutting diameter of the cutter. The cutting diameter of the cutter is adjustable.

Described herein is an orbital drilling system that includes an orbital drilling machine and a cutter. The orbital drilling machine includes a spindle and an eccentric rotation mechanism. The spindle is rotatable about a cutter axis. The eccentric rotation mechanism is coupled to the spindle and configured to orbit the spindle about an orbital axis, offset from the cutter axis. The cutter is co-rotatably coupled to the spindle and comprises a plurality of cutting edges, collectively defining a cutting diameter of the cutter. The cutting diameter of the cutter is adjustable.

A turn broach machine may include a machining member machining a target to be cut; and an adaptor which is provided under the machining member, supports the machining member, and adjusts a position of the machining member. At the time of adjusting a position of a segment of the machining member from a plate provided in an adapter, the segment moves on an adjusting plate that is mechanically defined, such that work accuracy may be improved to increase marketability and a work time may be decreased to improve work convenience and productivity.