Abstract: A machine tool is provided with a chain-type bit-storing apparatus which includes a frame, two sprockets, a chain and a pivoting unit. The frame includes a cutout. The sprockets are placed in the frame. The chain is driven by the sprockets. The chain includes links each including a socket for containing a bit, two plates for supporting the socket, first and second blocks placed between the plates, first and second bearing units for rotationally supporting the first and second blocks on the plates, and a connecting unit for pivotally connecting the first block thereof to the second block of an adjacent link. The pivoting unit is used to pivot the socket of a selected one of the links to move an open end of the socket out of the frame through the cutout.

Abstract: A controller including a detecting member detecting a machining position where a pivoting axis is reversed in machining by the machine tool based on the control data, an allowable position error setting member setting an allowable position error between a commanded machining position and an actual machining position, an allowable acceleration deciding member deciding the allowable acceleration about the pivoting axis based on a distance from the machining position of the reversed axis to a center of the pivoting axis and based on the allowable position error being set, and a controlling member controlling a velocity about the driving axis based on the allowable acceleration.

Abstract: A machine tool is provided with a tool magazine including a guiding plate, a turntable and holders. The guiding plate includes an annular groove with a semi-circular section and a semi-oval section. The semi-circular section is defined by a radius. The semi-oval section is defined by a semi-major axis identical to the radius of the semi-circular section and a semi-minor axis shorter than the semi-major axis. The turntable includes claws extending from the periphery. Each of the holders is pivotally connected to a related one of the claws and includes an end for holding a tool and another end formed with a ball movably located in the annular groove. Thus, some of the holders of which the balls are located in the semi-circular section of the annular groove close while the other holders of which the balls are located in the semi-oval section of the annular groove open.

Abstract: A chain-type magazine includes a box, a chain-type conveyor and a spinning unit. The box includes a port defined therein. The chain-type conveyor includes links connected to one another so that each of the links can be pivoted relative to the other links about two axes in parallel to each other. A tool can be inserted in a holder inserted in each of the links. The spinning unit includes a mounting assembly, an elevating assembly, a rotary claw assembly and a connecting rod. The mounting assembly is connected to the box. The elevating assembly is movably connected to the mounting assembly. The rotary claw assembly is rotationally connected to the mounting assembly for catching a selected one of the links. The connecting rod connects the elevating assembly to the rotary claw assembly. The driving element drives the elevating assembly to spin the rotary claw assembly.

Abstract: A chain-type bit-storing apparatus is provided for a CNC machine tool. The chain-type bit-storing apparatus includes a chain engaged with sprockets rotationally provided thereon. The chain includes links each includes a frame, a rotator rotationally connected to the frame, a pin for pivotally connecting the frame thereof to the rotator of another link and a socket connected to the frame and used to receive a bit. There is a pivoting unit for pivoting a selected one of the bits by pivoting a related one of the links.

Abstract: A tool pots mounting structure for a tool magazine, wherein the tool pots inside can be engaged into the engaging notches of the first and second mounting discs directly without using without any bolts, pivots or pivotal structures, and without using tools, such as power screwdriver, to assemble the tool pots. Hence, not only is the assembly process simplified, the assembly cost is reduced, but also the follow-up maintenance work is also reduced. A tool change device is disposed at one side of a tool change port of the tool magazine, by using a pressure cylinder to drive a drive member to move, and further driving a pivotal member to clamp the desired tool pot, the tool pot can be pivoted to disengage from the first and second mounting discs. By such arrangements, the tool change operation can be carried out by only a single tool change device. Hence, not only is the cost considerably reduced, but also the assembly process is also much simplified.

Abstract: A multi-axis automatic tool-changing system for an automatic machining center which is disposed with a plurality of machining principal axes and a tool magazine. The tool magazine is disposed with a plurality of tool-changing positions located correspondingly to the machining principal axes. Between each machining principal axis and each tool-changing positions is disposed a tool-changing arm. Each tool-changing arm utilizes the first end and the second end tool-taking grooves to grasp and exchange the tools of the machining principal axes and the tool-changing positions.

Abstract: A tool magazine exhibits a storage wheel, on the circumference of which there are attached, in the direction of its rotational axis protruding in both directions, tool receivers designed to receive tools. To transport the tools to a tool changer arranged on one side of the storage wheel there is provided a tool handover device, which is movable by means of a 4-position drive. To also enable the tools arranged to face away from the tool changer to be transported, the storage wheel exhibits passage opening that is open towards its circumference.

Abstract: A tool shelf magazine for milling and drilling machines has at least one shelf, a plurality of compartments provided in the shelf above each other at predetermined intervals and also a plurality of notches, which are open on one side accommodating one suspended tool. A handling device is vertically and horizontally shiftable by means of a motor located adjacent to the shelf. At least one gripper arrangement is provided for extracting predetermined tools from the shelf and for transferring them to a tool changer. At least one shelf has compartments with notches serving as tool accommodations on the front and back side. The notches on the front side are located in the access range of the handling device and the notches on the back side are accessible for retooling. The shelf is formed so as to be rotatable about an axis for a change of sides.

Abstract: A storage arrangement (1) for machine tools is proposed, comprising at least two storage shelves (12) arranged vertically one above the other and in each case having a multiplicity of tool or workpiece retainers (14), the tool or workpiece retainers (14) being arranged in a circle, and a movable gripping arm (16) which is rotatably arranged about an axis through the center of the circle formed by the storage retainers (14) and which furthermore is arranged so as to be movable in the vertical direction with respect to the storage shelves (12) and which furthermore is arranged so as to be movable horizontally and radially from the circle center, the gripping arm (16), during its horizontal movement, covering at most a distance which corresponds to the radius of the circle formed by the storage retainers (14).

Abstract: To provide a pivoting type tool pot having small number of parts, capable of being mounted on and removed from a tool holding rotating drum easily and capable of holding more tools on the tool holding rotating drum. In a tool pot for pivotally supporting a tool on a tool holding rotating drum in a machine tool automatic tool-replacing device, a tool pot has a tool supporting portion for removably holding the tool and a drum mount portion bolted onto the tool holding rotating drum. The drum mount portion comprises a supporting plate screwed onto a rear end portion of the tool supporting portion and a drum mount plate pivoted on the supporting plate. The tool supporting portion is pivotally supported on the tool holding rotating drum by being bolted on the tool holding rotating drum.

Abstract: A tool handling device for a machine tool has a plurality of tool holders, which are arranged stationarily in one plane. A boom is able to be pivoted around a pivot axis normal to such plane and bears a tool gripper arrangement able to be moved in a radial direction normal to the pivot axis. Tools may be moved by it between a transfer station and the tool holders. This tool handling device is suitable both for use as a tool magazine and also as a magazine extension module for a machine tool to permit high speed tool changing with simple movements.

Abstract: A machining center is provided with a cutter depot structure comprising a cutter socket, a cutter disk, and a round machine frame. The cutter socket is rotatably mounted on the periphery of the cutter disk by a retaining pin which is put through an L-shaped rod of the cutter socket. The L-shaped rod is provided with a roller. The cutter disk is provided with an annular stop surface. The round machine frame is provided with a wearproof annular pad having a cut. The cutter socket in motion is confined by the stop surface of the cutter disk and the annular pad of the machine frame such that the cutter socket is kept in the horizontal state. The cutter socket is turned on the retaining pin to facilitate the inverting of the cutter, thereby resulting in reduction in length of a cutter exchanging arm.

Abstract: A tool transfer device for machine tools that can reduce the tool transfer time and also reduce the cost of the device by eliminating the need for a driving source. The tool transfer device for machine tools has a tool magazine set beside a spindle on which a tool is mounted. The tool magazine serves for accommodating and holding therein a multiplicity of tools so that the tools are directed perpendicular to an axis of the spindle. A transfer pot is set on a spindle side of the tool magazine and is driven and moved by a horizontal moving unit and a vertical moving unit. This allows a next-process tool accommodated in the tool magazine to be taken out and transferred horizontally to a stroke end position by the transfer pot, and the next-process tool is then tilted at the stroke end position to a tool changing position in which the next-process tool is parallel to the axis of the spindle.

Abstract: A tool carousel comprising a plurality of wheel sections which can be joined together to form a carousel wheel and a plurality of tool-holding portions. Each tool-holding portion and wheel section is configured such that each tool-holding portion can be journalled to a respective wheel section for rotation between a tool-storage position and a tool-accessing position in which a tool can be installed thereupon or removed therefrom.

Abstract: An automatic tool changing device (ATC) for machining tools is disclosed. The ATC consists of arbor rotation guide means, arbor position changing means, arbor rotation means, tool changing means and ATC protection means. The ATC is positioned at a side of the movable table and effectively changes tools within the inner diameter circle of a rotary housing, thus shortening the arbor movement stroke and conserving the tool changing time during a tool changing operation. The ATC is also protected from the spindle stock of a machining tool, thus being free from any damage caused by chips from the spindle stock. The ATC is positioned at a side of the movable table in place of the column different from a typical ATC, so that it remarkably reduces the volume of the ATC protection cover and saves the manufacturing cost of such machining centers.

Abstract: In a tool storage device for a machine tool, a tilting mechanism is provided with a positioning member fixed in a magazine base, a turning member turnably mounted to the outer periphery of the positioning member. The center of turning of a tool pot is kept at a specified position by the positioning member so that the tool pot is integrally turned with the turning member by turning the turning member by a link rod to a tool storage state or to a tool exchange state. The center of turning of the tool pot agrees with that of the turning member, so that a friction force is not produced therebetween. The link rod is driven hydraulically by a cylinder which is locked to maintains the final position of the tool pot when the fluid supply to the cylinder is stopped. The tool pot is restricted from dropping from the transfer mechanism.

Abstract: A tool-shifting device includes a disk having a groove defined therein and a ring member is rotatably mounted to a first side of the disk. A plurality of sockets are pivotally connected to the ring member and each have a part received in the groove. The disk has a cutout communicating with the groove and a carrier movably disposed to a second side thereof, the carrier having a protrusion movably retained in a curved recess of a board which is pivotally disposed to the second end of the disk and actuated by a hydraulic cylinder. The socket removed to the cutout will be engaged with the carrier which is then moved along the curved recess of the board which is pivoted by the hydraulic cylinder. The part of the socket engaged with the carrier is then moved upwardly about a position where the socket is pivotally connected to the ring member so that an orientation of a tool received in the socket is changed with respect to the ring member.

Abstract: A tool pot is carried by a rotatable pot carrier of a tool magazine to hold a cutting tool with a tail end portion. Swingable between a rest position and an operative position, the tool pot includes a body having an axial tapering bore, an axial end bore for reception of the tail end portion of the cutting tool and a plurality of radial holes each open into the axial end bore at their inner ends. A gripper is provided in the radial holes of the body for releasably gripping the tail end portion of the cutting tool during the time the cutting tool remains held in the tool pot. Built in the body is a tool lock that cooperates with the gripper to lock the cutting tool against removal during the time the tool pot is at the rest position and is caused to swing.

Abstract: A tool pivoting mechanism of a tool magazine for a machining center uses a pressure cylinder as an actuating means to drive a cam mechanism. The cam mechanism composes of a cam set means which moves a roller on a tool pivoting block up or down along a guiding raft, thus drives a tool pot and a cutting tool to rotate. Through the curvature change of the cam curve, the pivoting mechanism controls the displacement, velocity and acceleration of tool pivoting block, thus prevents the impact force of tool pivoting and avoids the falling off of cutting tool.

Abstract: In an automatic tool change system in a combined machining lathe, with rotational and planar movements of a tool change arm, tools are replaced with each other between magazine pots and first and second tool holders which are mounted to a turret so as to be directed to a rotation axis direction of the turret and to a rotation plane direction of the turret, respectively. A tool grasp part of the tool change arm includes first holding claws for inserting and withdrawing a tool into and from the first tool holder and second holding claws for inserting and withdrawing a tool into and-from the second tool holder. At a tool exchange position, each magazine pot is pivoted between a first exchange position where the magazine pot takes an attitude parallel to the first tool holder and a second exchange position where the magazine pot takes an attitude face to face with the second tool holder.

Abstract: The tool or workpiece magazine has tool holders disposed on a circle, from which holders the tools or workpieces can be removed by means of a removing device disposed centrally relative to the circular arc. This removing device comprises a column which is turnable around the axis thereof and on which a carriage is axially and slidably mounted. The carriage in turn carries transversely extendable telescoping arms, at the free end of which there is disposed a gripper having gripping jaws. Slots in tool carriers attached horizontally on movable panels are used as tool or workpiece holders. The panels can be moved outward of the magazine for stocking purposes.