JPH0212690B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine tool equipped with a chain-type tool magazine.

In a flexible manifold gearing system, when a workpiece to be machined is changed, some of the tools in the tool magazine are replaced with those stored in the tool storage. in this case,
A robot arm-shaped tool changing manipulator is installed on the tool carrier that carries tools for replacement between the machine tool and the tool storage, and this allows the tool carrier and tool magazine to be transferred between the tool carrier and the tool storage. When considering transferring replacement tools between The manipulator cannot reliably grip the tool indexed to the desired position, and the tool cannot be replaced smoothly.

In the above-mentioned system, one tool carrier handles tool exchange for multiple machine tools, so the arm on the tool carrier is adjusted to allow tool exchange on a specific machine tool. Even if it is possible, the positions do not correspond with other machine tools, so the height and horizontal installation position of the machine tool should be adjusted for each machine tool so that tools can be transferred smoothly with any machine tool. There is a need. However, if the overall position of each machine tool is adjusted, there is a problem in that the adjustment requires a great deal of effort.

Therefore, in a machine tool equipped with a chain-type tool magazine, the present invention provides a tool change position near the chain guide disk, which is located away from the automatic tool change position between the tool magazine and the spindle. Focusing on the fact that the tool socket position at the automatic tool change position does not change even if the position of the guide disk is adjusted and the position of the tool socket is adjusted to the tool change position, the position of the guide disk is adjusted. It is an object of the present invention to smoothly and reliably transfer a replacement tool between a tool carrier and a tool magazine without adjusting the position of the entire machine tool.

Embodiments of the present invention will be described below based on the drawings.
In FIG. 1, 1 is a machine tool, and 2 is a tool carrier for changing tools. The machine tool 1 has a saddle 4a on a bed 3 and a table 4b provided on the saddle 4a, and a workpiece W is placed on the table 4b. The column 5 also has a spindle head 6 that moves up and down directly above the table 4b.
is provided and has a main shaft 7.

8 is a chain type tool magazine (hereinafter abbreviated as tool magazine) provided in the column 5 on the side of the spindle head 6. This tool magazine 8 has a magazine support 9 and a pair of guide discs 10 such as sprockets.
11 is rotatably attached, and a chain 12 is stretched between the pair of guide disks 10 and 11, and a tool socket 13 is attached to the chain 12 in an axial direction parallel to the rotation axes of the guide disks 10 and 11. It is installed.

One of the guide disks 10 is provided near a tool change position B where tools are exchanged by a tool changer 16 between the tool magazine 8 and the main spindle 7, and the other guide disk 11 is provided at a tool change position B between the tool magazine 8 and the main spindle 7. It was provided in the vicinity of the tool exchange position A at a position away from position B, and the configuration described later enables movement adjustment within a plane perpendicular to the axis of the tool in the tool socket 13.

On the other hand, a tool carrier 2 for tool replacement shown in FIG.
A magazine disk 34 horizontally indexed and rotated on a carrier body 29 that runs on wheels 30 on a rail 28, a tool holding hole 35 provided in this magazine disk 34, and the tool magazine 8. A replacement arm 36 is provided for transferring replacement tools between the two. The tip of the replacement arm 36 has a gripping claw 37 for gripping a tool. In addition, legs 31 are disposed at the front and rear of the carrier body 29 and are moved up and down by positioning cylinders 32, and are connected to conical positioning blocks 33 provided on the floor on which the rails 28 are laid when changing tools. At the same time, the carrier body 29 is slightly lifted, the wheels 30 float above the rails 28, and the carrier body 29 is positioned and fixed.

Guide disk 11 near the tool changing position A described above
The movement adjustment mechanism of is as follows. As shown in FIGS. 2 and 3, a mounting body 20 is attached to the inner wall surface of the magazine support 9, which is perpendicular to the axis of the tool T in the tool socket 13, so as to be movable and adjustable within the wall surface. As a mounting means, a through hole 21 parallel to the axis of the tool T is bored in the mounting body 20, and a tightening bolt 22 with a shaft diameter smaller than the diameter of the through hole 21 is used.
Penetrate through the wall and screw into the screw hole provided on the wall.

A support shaft 19 is fixed to this mounting body 20 along an axis parallel to the tool T, and a guide disk 11 such as the sprocket is rotatably supported on the support shaft 19.
A round hole 27 having a diameter larger than the shaft diameter of the support shaft 19 is formed in the wall surface of the magazine support body 9 through which the support shaft 19 passes. Furthermore, the elongated hole 9 of the magazine support body 9
a, 9b at a right angle 2 toward the center of the support shaft 19
A pair of adjustment shafts 23 and 25 are rotatably mounted on the axis of the direction while restricting movement in the axial direction, and their tips are screwed into the mounting body 20. And adjustment axis 2
The elongated holes 9a and 9b through which the slots 3 and 25 are respectively inserted have predetermined lengths in the horizontal and vertical directions in FIG. 3, and are movable in the horizontal and vertical directions, respectively.

The magazine support 9 also includes a pair of guide disks 1.
A tension adjustment device 14 that supports the chain 12 between 0 and 11 on a push-up plate 15, and a tool exchange positioning device 18 that positions the guide disk 10 in the vicinity of the tool exchange position B are attached. A tool changing positioning device 17 that positions the guide disk 11 near the tool changing position A is attached to the mounting body 2.
0, protrudes from a square hole 39 formed in the wall surface of the magazine support 9, and is positioned corresponding to the guide disk 11. Reference numeral 38 in FIG. 2 is an opening formed in the side wall surface of the magazine support 9, and the tightening bolt 22 is operated through this opening 38.

Next, the operation of the present invention will be explained. To change the tool between the spindle 7 and the tool magazine 8, the rotation of the guide disk 10 is stopped by the tool change positioning device 18, and the tool changer 16 is moved between the tool socket 13 positioned at the tool change position B and the main spindle 7. Therefore, the tool exchange operation is automatically performed.

On the other hand, for tool changing, the tool changing positioning device 17
The rotation of the guide disk 11 is stopped, and the tool is automatically changed between the tool socket 13 positioned at the tool change position A and the magazine disk 34 on the carrier body 29 via the change arm 36. A replacement operation is performed.

When performing this tool changing operation, the tool changing position A where the gripping claw 37 of the changing arm 36 is located
The guide disk 1 is placed so that the tool socket 13 is located in a corresponding position.
Move and adjust the axis position of 1. The adjustment operation is performed by loosening the tightening bolt 22 to make the mounting body 20 movable, and by appropriately operating the adjustment shafts 23 and 25, the mounting body 20 is moved so that one of the tool sockets 13 is located at the tool exchange position A. to adjust the movement of the guide disk 11, and after adjustment, tighten the mounting body 20 again with the tightening bolt 22.
This is to tighten and fix. In addition, since the tool changing positioning device 17 is fixed to the mounting body 20,
The position relative to the guide plate 11 will not change.
In addition, the chain 1 due to movement adjustment of the guide disk 11
The tension adjustment device 1 changes the tension in step 2.
4.

As described above, according to the present invention, the tool exchange position is set at a position away from the tool exchange position of the chain type tool magazine, and the guide disk of the chain located near the tool exchange position is movable and adjustable; Since the tool socket is positioned to correspond to the tool exchange position, the tool exchange position can be easily adjusted and set without changing the tool exchange position, and the entire position of each machine tool can be adjusted by adjusting the position of the entire machine tool. The position can be adjusted with less effort than when adjusting to accommodate the In addition, the guide disc is moved and adjusted to correspond to the tool change position, and even if the chain becomes loose as a result, the tension adjustment device will adjust it appropriately.
It is possible to maintain high accuracy in indexing the tool socket to the tool exchange position. Furthermore, the positioning device for the guide disk on the side that performs movement adjustment is attached to the mounting body to which the guide disk is attached and is adjusted and moved together with the guide disk, so the positional relationship between the two cannot be changed. Therefore, it has many effects such as eliminating the need for position adjustment of the positioning device accompanying adjustment of the guide disk.

[Brief explanation of drawings]

Figure 1 is a side view of the present invention, Figure 2 is Figure 1-
A line sectional view, FIG. 3 is a line sectional view taken from FIG. 2. 1...Machine tool, 2...Tool carrier for tool replacement, 3...Bed, 4b...Table, 5...Column, 6...Spindle head, 7...Spindle, 8...Chain type tool Magazine, 9...Magazine support, 1
0,11...Guide disk, 12...Chain, 13
... Tool socket, 14 ... Tension adjustment device, 16 ... Tool change device, 17 ... Tool change positioning device, 18 ... Tool change positioning device, 19 ... Support shaft, 20 ... Mounting body, 21...
Through hole, 22... Tightening bolt, 23, 25... Adjustment shaft, 27... Round hole.

Claims (1)

[Scope of Claims] 1. A pair of guide disks rotatably provided in the vicinity of the tool exchange position and in the vicinity of the tool exchange position, an endless chain spanning between the guide disks, and an endless chain attached to the chain. In a chain type tool magazine consisting of a tool socket and a tool socket, a guide disk near the tool change position is attached to a mounting body that is guided and supported so as to be movable in a plane orthogonal to the axis of the tool in the tool socket. A machine tool equipped with a chain-type tool magazine, characterized in that it is provided with an adjustment mechanism that moves and adjusts the position of this attachment body, and is further provided with a tension adjustment mechanism that supports the chain and applies a predetermined tension to the chain. 2 The guide disc is composed of a sprocket,
A machine tool equipped with a chain-type tool magazine according to claim 1, further comprising a positioning mechanism that engages and disengages from tooth grooves of the sprocket to position the sprocket in the rotational direction. 3. A machine tool equipped with a chain-type tool magazine according to claim 2, wherein the sprocket positioning mechanism near the tool change position attached to the support is attached to the mounting body.