SU1142253A1 - Automatic tool-change device - Google Patents

Abstract

AUTOMATIC CHANGER OF TOOL, containing a tool magazine with portable cells, in which there is an instrument moving along guides with end sections perpendicular to the cell axis, a carriage on which the gripper of the cell is fixed on the shop side, and a loading arm in the form of a rotary two-gripping arm , characterized in that, in order to increase speed and simplify the device, the cell is gripped on the carriage by a fork, and a loading arm is mounted on it, the grip otorrhea configured forked and coaxial capture cell. 73 f (rig.1 77

Description

The invention relates to a machine tool industry and can be applied mainly on multi-purpose machine tools with numerical control.

A device for automatic tool changing is known, comprising a tool magazine with portable cells in which there is an instrument moving along guides with end sections perpendicular to the cell axes, a carriage on which the gripper of the cell is attached to the magazine side, and a loading arm in the form of a rotary two-gripper hands 1.

The known device has a complex structure, since for changing tools in a machine spindle and a preliminarily extended cell, a two-jaw arm is forced to make two turning movements — an additional hand turn by 90 ° to grip the tool and a hand turn by 180 ° to change it, and movements need to increase the number of actuators and, accordingly, the number of command elements. In addition, the known device does not have the speed due to the rotation of the hand 90 °.

The purpose of the invention is to increase the speed when changing tools by simultaneously joining the cell with a grip on the carriage and a tool with a grip on the hand, as well as simplifying the design, achieved by reducing the number of means for controlling the movements of a two-grip arm.

This goal is achieved by the fact that in an automatic tool changer device containing a tool magazine with portable cells in which there is an instrument moving along guideways with end portions perpendicular to the axis of the cells, the carriage on which the gripper a manipulator in the form of a rotary two-arm, the gripping of the cell on the carriage is made with a fork, and a loading manipulator is mounted on it, the grip of which is made with a fork and coaxial gripper atu cell

The proposed device is shown in the drawings, which depict:

FIG. 1 shows an automatic tool changer for a portal-type machine with a vertical spindle, front view; in fig. 2 is a view A of FIG. one; on fig.Z - the device at the initial position of the carriage, front view; in fig. 4 - the same, in the position of supplying the carriage to the tool magazine and coupling by gripping the cells with the cell, and gripping the tool on the arm with the tool prepared for the shift; in fig. 5 - the same.

in the position of supplying the carriage to the threaded rod of the machine and engaging a free gripper of the two-fold / Avatna hand with the exhaust tool; in fig. 6 - the same in position

the downward two-arm together with the tool linked with it, worked and prepared for the shift; in fig. 7 - the same, in the position of the two-grabing arm turned by 180 ° around the axis of the shaft bearing it (replacing it with working and prepared for changing tools); in fig. 8 - the same, in the position of raising the two-arm and the installation of the tool prepared for the tool change, and the

in the cell on the carriage; in fig. 9 - the same, in the position of supplying the carriage with the cell and the exhaust tool to the tool magazine; in fig. 10 - the same, in the position of retracting the carriage to its original position.

The automatic tool changer contains a magazine of 1 chain-type tools, the links 2 of which have grooves in which portable cells 3 with the tool are placed. A horizontal beam 4 is located above the magazine 1, on the guides of which a movable carriage 5 is mounted, on which from the side of the magazine there is a forked gripping 6 cells. Beam 4 is located in front of the spindle headstock of the machine 7, which carries the spindle 8,

directed vertically down. The spindle headstock 7 is movably mounted on the traverse 9, the guides of which are parallel to the guides of the beam 4. The traverse 9 is mounted in turn on vertical

guide posts 10. At the bottom of the Carriage, there is a vertical rotary shaft 11 on which a transport arm is mounted in the form of a two-gripped arm 12, having fork-shaped tools 13 at its ends. The connecting surfaces 14 of the cells 3 and the same surfaces 15 of the gripper 6 cells are located at the same distance from the guide surface 16 of the beam 4, which makes it possible to match the gripper 6 with the cells 3 and the gripper 13 with the tool located in the cells 3.

The device works as follows.

Before the tool change, the movable carriage 5 is in the waiting position, near the magazine 1 (Fig. 3). At the command of the CNC, the carriage 5 is guided to the magazine 1 (VK motion) and, with its grip, 6 cells interlock with the portable cell 3 in which the tool (for example, the boring mandrel 7) prepared for the shift is located. Simultaneously with the engagement of the gripper 6 cells with the cell 3, the engagement of the tool 13 of the two-arm 12 with the corresponding shoulder of the mandrel 17 occurs (Fig. 4). After engaging the gripper 6 with the cell 3 and the gripper 13 with the collar of the mandrel 17, the detachment of the cell 3 from the link 2 of the magazine 1 is made. The mobile carriage 5 returns to the waiting position. In order to change the working tool (for example, drill 18), the carriage 5 together with the boring mandrel 17 is fed to the machine spindle 8 and its free grip 13 of the two-grip hand tool makes it clutch with the drill collar 18 (Fig. 5). After that, at the command of the CNC, it is produced. unclamping the shank of the drill bit 18. The next step in changing the tool is to simultaneously take out the replaceable drill bits 18 and the mandrel 17, respectively, from the clamp stem 8 and from the cell 3 by extending (lowering) the arm 12 (movement Vp) along the shaft 11 (Fig. 6). Then, the shaft is rotated 180 ° (movement (s)), in which the spent drill bit 18 and its alternating mandrel 17 change places (Fig. 7). After this two-handed arm 12, shifting

along the rotary shaft 11 in the direction of the carriage 5, installs prepared for changing the boring mandrel 17 in the spindle of the machine 8, and the exhaust drill 18 in the cell 3 (Fig. 8). At the end of this movement at the command of the CNC, the shank of the boring mandrel 17 is clamped in the spindle of the machine 8. Then the carriage 5 is sent to the tool magazine and the cell 3 is installed and secured with the spent drill 18 in the magazine link (Fig. 9). The last movement of the tool change cycle is to retract the carriage 5 to the waiting position.

The positive effect of the invention compared to the prototype is to increase productivity by increasing the speed when changing tools. In addition, the design of the device is also simplified, since for changing

the tool requires the least amount of movements (manipulations) of the organs of the device, which accordingly reduces the number of command equipment.

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Claims (1)

AUTOMATIC TOOL CHANGE DEVICE containing a tool magazine with portable cells, in which a tool is located, moving along guides with end sections perpendicular to the axis of the cells, a carriage on which the cell is fixed from the side of the store, and a loading manipulator in the form of a rotary two-gripping arm, different the fact that, in order to improve performance and simplify the device, the capture of the cell on the carriage is fork-shaped and a loading manipulator is installed on it, the capture of which o made fork and coaxial capture of the cell. (rig. 1