Provided is a machine tool including: a movable drum base (4); a drum (5) that is incorporated in the drum base (4) and is circular in outline; and a quill main spindle (6) penetrating through the drum (5) in a central axis direction of the drum (5), wherein protrusion allowance from the drum (5) is adjustable, wherein a bearing provided along an outer circumference of the drum (5) is interposed between the drum base (4) and the drum (5) such that the drum (5) is rotatable in the drum base (4), and movement of the drum base (4), rotation of the drum (5), and protrusion allowance adjustment of the quill main spindle (6) from the drum (5) allow a tool (10) mounted on the quill main spindle (6) to be positioned.
A cutting tool for boring (40) that is attached to a machining apparatus and used for cutting a hole (13) on a large-diameter side of a stepped hole of a workpiece (10) is provided. The cutting tool for boring (40) is a set of two tools, and each cutting tool for boring (40a, 40b) in the set of two includes a shaft part (41), a cutting blade (42) laterally protruding from the respective shaft parts (41), and an abutment surface (43) formed at the tip of each shaft part (41) and used to cause the tips of the respective shaft parts (41) to butt against each other. Each cutting tool for boring (40a, 40b) performs cutting while the two cutting tools for boring (40a, 40b) rotate integrally around the center line of the shaft parts (41) in a coupled state in which the tips of the cutting tools for boring (40a, 40b) are butted together.
B23B 39/22 - Drilling machines with a plurality of working-spindlesDrilling automatons with working-spindles in opposite headstocks
B23B 35/00 - Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machinesUse of auxiliary equipment in connection with such methods
B23Q 1/26 - Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable membersMeans for preventing relative movement of such members
The present invention comprises a movable drum base (4), a drum (5) that has a circular external shape and is installed in the drum base (4), and a quill spindle (6) that passes through the drum (5) in the axial direction and can adjust the protruding amount thereof from the drum (5), wherein: the drum (5) can rotate within the drum base (4) as a result of providing a bearing along the circumference of the drum (5) so as to be interposed between the drum base (4) and drum (5); and positioning of a tool (10) mounted to the quill spindle (6) can be performed by moving the drum base (4), rotating the drum (5), and adjusting the protruding amount of the quill spindle (6) from the drum (5).
A boring cutting tool (40) that is attached to a machine, for cutting a hole (13) of a large-diameter side of a stepped hole of a workpiece (10). Two boring cutting tools (40) form a set. Each of the set of two boring cutting tools (40a, 40b) comprises: a shaft part (41); a cutting edge (42) projecting laterally from the shaft part (41); and an abutting surface (43) for abutting tips of the shaft parts (41) against each other. The two boring cutting tools (40a, 40b) perform cutting while integrally rotating around the center line of the shaft parts (41) in a coupled state in which the tips of the boring cutting tools (40a, 40b) are abutted against each other.
B23B 35/00 - Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machinesUse of auxiliary equipment in connection with such methods
B23B 41/00 - Boring or drilling machines or devices specially adapted for particular workAccessories specially adapted therefor
B23B 39/22 - Drilling machines with a plurality of working-spindlesDrilling automatons with working-spindles in opposite headstocks
5.
Cutting tool for machining differential case, machining apparatus for differential case and machining method for differential case
A cutting tool (35) for machining a differential case, the cutting tool (35) being attached to a machining apparatus and used to perform cutting on a spherical inner surface of a differential case (10), the cutting tool (35) including: a shaft part (50); a cutting edge (51) laterally protruding from the shaft part (50); a fixing part (53) formed at one end side of the shaft part (50) and that is for fixing the shaft part (50) to the machining apparatus; and a retaining part (54) formed at the other end side of the shaft part (50) and that is for retaining the shaft part (50) by the machining apparatus, wherein the cutting tool (35) is able to perform cutting on the spherical inner surface of the rotating differential case (10) in a both-ends-held state in which both the fixing part (53) and the retaining part (54) are supported by the machining apparatus.
B23B 5/40 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning spherical surfaces inside or outside
B23B 27/00 - Tools for turning or boring machinesTools of a similar kind in generalAccessories therefor
A machining apparatus includes: a shuttle unit (3) that holds a differential case (10) and rotates the differential case (10); a pair of opposed right and left machining units (4); and a tool support (6) that supports a tool (40) for machining the differential case (10), in which the pair of right and left machining units (4) each include a slide mechanism dedicated for uniaxial sliding in right and left directions, the shuttle unit (3) is movable in up and down directions and front and back directions, a tool attached to each of the pair of right and left machining units (4) enables machining an end portion of an inner surface of the differential case (10) and a flange hole of the differential case (10), the end portion surrounding a through hole, and a cutting edge of the tool (40) supported by the tool support (6) enables spherically cutting the inner surface of the differential case (10) held and rotated by the shuttle unit (3).
B23P 23/02 - Machine tools for performing different machining operations
B23Q 3/155 - Arrangements for automatic insertion or removal of tools
B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
B23Q 39/02 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
B23B 11/00 - Automatic or semi-automatic turning-machines incorporating equipment for performing other working procedures, e.g. slotting, milling, rolling
B23B 39/22 - Drilling machines with a plurality of working-spindlesDrilling automatons with working-spindles in opposite headstocks
B23B 3/06 - Turning-machines or devices characterised only by the special arrangement of constructional units
B23B 5/40 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning spherical surfaces inside or outside
B23B 41/00 - Boring or drilling machines or devices specially adapted for particular workAccessories specially adapted therefor
B23Q 39/00 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
The present invention is provided with: a shuttle unit (3) that holds and rotates a differential case (10); a pair of left and right machining units (4) that are disposed opposite to each other; and a tool support base (6) that supports a tool (40) for machining the differential case (10), wherein the sliding mechanism of the left and right machining units (4) is dedicated to uniaxial sliding in the left-and-right direction, the shuttle unit (3) can move in the up-and-down and back-and-forth directions, the end of the inner surface of the differential case (10) surrounding a through-hole and a flange hole of the differential case (10) can be machined by tools fitted to the left and right machining units (4), and the inner surface of the rotating differential case (10) held by the shuttle unit (3) can be cut into a spherical shape by a cutting blade of the tool (40) supported in the tool support base (6).
B23B 5/40 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning spherical surfaces inside or outside
B23B 39/22 - Drilling machines with a plurality of working-spindlesDrilling automatons with working-spindles in opposite headstocks
B23B 41/00 - Boring or drilling machines or devices specially adapted for particular workAccessories specially adapted therefor
10.
CUTTING TOOL FOR MACHINING DIFFERENTIAL CASES, DIFFERENTIAL CASE MACHINING DEVICE, AND DIFFERENTIAL CASE MACHINING METHOD
Provided is a cutting tool (35), for machining differential cases, which is mounted to a machining device to cut the spherical inner surface of a differential case (10) and which is provided with: a shaft part (50); a cutting blade (51) protruding laterally from the shaft part (50); a fixing part (53) that is formed on one end side of the shaft part (50), and that is for fixing the shaft part (50) to the machining device; and a holding part (54) that is formed on the other end side of the shaft part (50), and that is for holding the shaft part (50) by the machining device, wherein the spherical inner surface of the differential case (10) that is rotating can be cut in a dual-supported state where both the fixing part (53) and the holding part (54) are supported on the machining device.
B23B 5/40 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning spherical surfaces inside or outside
B23B 41/00 - Boring or drilling machines or devices specially adapted for particular workAccessories specially adapted therefor
