JPS6153184B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool socket turning device that changes the attitude of a tool socket.

An object of the present invention is to eliminate interference between the engaging body and the tool socket by engaging the engaging body reciprocated by a drive device with the engaging roller on the tool socket at the side of the tool socket. and to downsize the device.

Generally, a tool changer installed in a vertical machine tool includes a tool magazine that swingably holds a large number of tool sockets into which tools are removably inserted. In order to take out a tool from this tool magazine, the tool socket with the required tool inserted must be indexed to the take-out position, and then the tool socket, which is in a horizontal position, must be turned to a vertical position parallel to the main axis.

For this reason, in the past, the tool socket was rotated from a horizontal state to a vertical state by reciprocating an engaging body associated with an engaging roller on the tool socket using a drive device. In order to avoid interference between the tool socket and the engaging body, the engaging roller is supported at a position considerably away from the center of rotation of the tool socket, so it is necessary to take a large stroke of the engaging body, and as a result, the space occupied by the engaging body is As the motor becomes larger, a driving device with a large stroke must be used, which has the disadvantage of increasing the size of the device.

The present invention has been made in order to solve these conventional drawbacks, and by arranging the engagement roller on the side of the tool socket, the engagement roller is brought as close as possible to the turning center of the tool socket. The present invention relates to a tool socket turning device in which a tool socket is turned to a predetermined posture with a small stroke of an engaging body.

Embodiments of the present invention will be described below based on the drawings.
1 and 2, reference numeral 10 indicates a tool magazine installed on the side of a column (not shown) of a vertical machine tool, and a rotary shaft 12 is rotatably supported on a base 11 of this tool magazine 10. has been done. The rotation of a drive motor 19 is transmitted to this rotating shaft 12 via a worm 13 and a worm wheel 14, and a magazine disc 16 is fixed to the tip of the rotating shaft 12.
It is designed to rotate and index. A large number of holding pieces 17 are protruded from the outer periphery of the magazine disk 16 at equal intervals in the radial direction.
5 is pivotably supported. The inward swinging of each tool socket 15 is regulated by a regulating bolt 21 so that its axis is maintained horizontally during rotational indexing of the magazine disk 16, and the outward swinging thereof is restricted by a regulating bolt 21. It is regulated by a guide rail 22. This guide rail 22 is cut out at the tool take-out position P, and allows the tool socket 15 indexed to the tool take-out position P to pivot.

As shown in FIG. 3, each tool socket 15 has a tapered insertion hole 23, into which the tool 20 is inserted. This tool 2
0 has a pull stud 24 at one end, which includes a pair of retaining pins 27, 28 radially pressed by springs 25, 26.
is engaged. One end of the holding pin 28 is inserted into a block 29 fixed to the tool socket 15, and a lock shaft 30 is inserted into this block 29.
is fitted so that it can move forward and backward in a direction parallel to the axis of the tool socket 15. This lock shaft 30 has a recess 31 on its outer circumference.
The recess 31 can be made to correspond to the holding pin 28 by advancing and retreating in the axial direction against the spring 32. For example, when the lock shaft 30 is moved to an axial position (unlocked position) where the recess 31 corresponds to the holding pin 28, the holding pin 28 is allowed to move backward, allowing the tool 20 to be removed from the tool socket 15. Furthermore, when the outer peripheral surface of the lock shaft 30 moves to the axial position corresponding to the holding pin 28 (lock position), the holding pin 28 is prevented from retreating, thereby preventing the tool 20 from falling out from the tool socket 15. ing. Note that 33 is a key groove, and 34 is a retaining pin that engages with this key groove 33 to prevent the lock shaft 30 from coming off and rotating. Further, when the tool socket 15 is rotated to a vertical position, the tool 35 comes into contact with the lock shaft 30 to release the lock of the holding pin 28 and lock the block 2.
This is an abutting member that comes into contact with the tool socket 9 to restrict the turning end of the tool socket 15.

Behind the tool socket 15 indexed to the tool take-out position P, a drive device 36 consisting of a turning cylinder device is provided. This drive device 36
The tool has a cylinder 37 formed on the base 11 and a piston 38 slidably fitted into the cylinder 37, and an engaging body 40 fixed on the piston rod 39 of the piston 38 is connected to the tool socket 15. Tool socket 15 in the rotation plane
It is designed to reciprocate in a direction perpendicular to the axis of the As shown in FIG. 4, this engaging body 40 has a relief space 41 that is parallel to the side surface of the tool socket 15 and has a width slightly larger than the width of the tool socket 15, and is located outside the side surface of the tool socket 15. A pair of engagement protrusions 42 are formed on both sides of the tool socket, and a pair of engagement rollers 43 are located on the outside of the side surfaces of the tool socket 15 and parallel to the turning plane of the tool socket 15. It is rotatably supported inside. The pair of engagement rollers 43 and the guide grooves 44 formed in the pair of engagement protrusions 42 are engaged with each other on the sides of the tool socket 15, and this engagement structure prevents the reciprocating movement of the engagement body 40. This is transmitted to the tool socket 15, causing the tool socket 15 to pivot around the pivot pin 18. The guide groove 44 has a width slightly larger than the diameter of the engagement roller 43 and is formed parallel to the direction in which the tool socket 15 is indexed, so that the engagement roller 43 does not fit inside the guide groove 44 when the tool socket 15 is indexed. It is now possible to pass through freely. 45 is a through hole through which the contact member 35 passes.

Further, numeral 53 in FIG. 1 indicates a spindle head mounted on the front surface of the column so as to be movable up and down, and this spindle head 5
3, a main shaft 54 is rotatably supported around a vertical axis, and the tool 20 is removably inserted into the lower end of this main shaft 54. Reference numeral 55 denotes an exchange arm for exchanging the tool 20 between the tool socket 15 vertically rotated at the take-out position P and the main shaft 54. It is supported by the arm support body so that it can rotate reversibly and move back and forth in the axial direction.

Next, to explain the operation in the above configuration, while the tool 20 inserted into the main shaft 54 is machining the tool, the drive motor 19 is operated to index the next tool 20 to the tool take-out position P. The magazine disk 16 is indexed and rotated. As a result, each tool socket 15 into which a tool 20 is inserted is sequentially indexed to the tool ejection position P, and when the tool socket 15 into which the required tool 20 is inserted is indexed to the tool ejection position P, the magazine disc 16 The indexing rotation of the main shaft 54 is stopped, and in this state it waits until the machining by the tool 20 inserted into the main shaft 54 is completed.

When the predetermined machining with the tool 20 inserted into the spindle 20 is completed, the spindle head 53 is raised to the upper end position for tool exchange, and at the same time, the tool socket 15 indexed to the tool take-out position P is rotated. will be carried out. That is, when the machining is completed, pressure oil is first supplied to the lower chamber of the cylinder 37, and the piston 38 and the engaging body 40 integral therewith are raised. As a result, the engaging body 40 and the engaging roller 4
The tool socket 15 connected via 3 is pivoted about the pivot pin 18, and the tool socket 15
The attitude of the axis is changed from the horizontal state shown by the solid line in FIG. 3 to the vertical state shown by the imaginary line.

During the indexing of the tool socket 15 and during the turning operation of the tool socket 15, the holding pin 28 is prevented from retreating in correspondence with the outer peripheral surface of the lock shaft 30, thereby preventing the tool 20 from falling off from the tool socket 15. However, when the tool socket 15 is turned to a predetermined angular position, the lock shaft 30 first comes into contact with the abutment member 35, and then the block 29 comes into contact with the abutment member 35, and the end of the rotation is regulated. As a result, the lock shaft 30 compresses the spring 32 and the recess 31 retreats to the unlocked position corresponding to the holding pin 28, allowing the tool 20 to be removed from the tool socket 15. Note that in this state, tool 2
Since the tool 20 is held by the holding pins 27 and 27 which are biased by the springs 25 and 26, the tool 20 will not fall out of the socket 15 due to its own weight.

When the spindle head 55 is positioned at the rising end and the tool socket 15 at the tool take-out position P is turned vertically, the exchange arm 55 is turned by a predetermined angle and the main spindle 54 and the tool socket 15 are removed by the gripping portions at both ends of the exchange arm 55. grip the tool 20 inserted into the
Subsequently, the exchange arm 55 is moved forward (lowered) in the axial direction, 180
By the turning and axial retraction (raising) movements, the used tool 20 removed from the main spindle 54 is inserted into the tool socket 15, and the next tool 20 removed from the tool socket 15 is inserted into the main spindle 54. , and then the exchange arm 55 is rotated back to its original position.

When the exchange arm 55 is returned to its original position,
The spindle head 53 is lowered for machining the workpiece, and the tool socket 15 is rotated from a vertical position to a horizontal position by the drive unit 36, and in this state, the tool 20 to be used next is indexed to the exchange position. The magazine disk 16 is rotationally indexed. On the other hand, due to the rotation of the tool socket 15, the lock shaft 30 is disengaged from the abutting member 35, whereby the lock shaft 30 is advanced to the lock position by the repulsive force of the spring 32, and prevents the holding pin 28 from retreating. , so that the tool 20 is locked.

As described above, the device of the present invention is configured such that the engagement roller is rotatably supported on the tool socket by being positioned outward from the side surface of the tool socket. This allows the tool socket to be pivoted by making a small stroke of the engaging body that engages with the engaging roller, resulting in a smaller space occupied by the engaging body and a smaller A stroke drive device can be used, and there is an advantage that the device can be miniaturized.

Furthermore, in the present invention, the engaging protrusion formed on the engaging body is located outside the side surface of the tool socket, and is engaged with the engaging roller on the side of the tool socket. A relief space is formed behind the socket, and this relief space has the advantage of preventing interference with the engaging body when the tool socket is turned.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially omitted front view of a tool magazine, FIG. 2 is an enlarged sectional view taken along the line - in FIG. 1, and FIG.
3 is an enlarged sectional view taken along the - line in FIG. 1, and FIG. 4 is a sectional view taken along the - line in FIG. 3. 15...Tool socket, 20...Tool, 36...
...Drive device, 40...Engagement body, 42...Engagement protrusion, 43...Engagement roller, 44...Guide groove, P...
...Tool removal position.

Claims (1)

[Claims] 1 Indexing and rotating a specific tool socket among a large number of tool sockets into which tools are removably inserted to a tool take-out position, and rotating this specific tool socket in a plane intersecting the index rotation direction. In the tool magazine adapted to take out the tools,
A drive device is provided behind the tool socket indexed to the tool take-out position, and an engaging body that is reciprocated in a plane parallel to a turning plane of the tool socket is connected to a responsive portion of the drive device, The engaging body is formed with an engaging protrusion located outward from the side surface of the tool socket, a guide groove is formed in the engaging protrusion parallel to the indexing direction of the tool socket, and the guide groove is provided with a guide groove parallel to the indexing direction of the tool socket. A tool socket turning device characterized by engaging an engaging roller that is located outward from a side surface of the tool socket and is rotatably supported by the tool socket in a plane parallel to the turning plane of the tool socket.