JPH0790438B2 - Tool magazine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a). BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool magazine, and more particularly to a tool magazine that supplies and stores a tool to a multi-tasking lathe having a grinding function.

(B). 2. Description of the Related Art Recently, it has been proposed to mount a grinding tool on a turret (ram head) of a lathe so that it can be driven and rotated, and to perform not only turning but also drilling and grinding with a lathe. It is in circulation. In particular, a vertical lathe that rotates a large table in a horizontal plane is found to be equipped with such a function.

However, in such a combined machining lathe, the dresser work of the grinding tool (here, the dresser work includes not only the so-called "dressing" of the stone but also the work of "reforming". The same applies hereinafter. In the conventional method, the operator causes the dresser device to be attracted and held at an appropriate position on the table by a magnetic attraction device or the like, and the dresser device that has been attracted and held has a grinding tool attached to the tool rest. , A predetermined dressing operation is performed by moving and contacting it under the manual control of the operator.

(C). However, this requires an operator to install the dresser device on the table every time the dresser work is performed.
It was extremely complicated. In addition, since the installation position of the dresser device changes each time it is installed, the approach of the grinding tool to the dresser device must be performed manually, which not only takes time, but also prevents the unmanned grinding work. It was also a cause.

The present invention provides a tool magazine that eliminates the above-mentioned drawbacks by eliminating the need for an operator to install a dresser device on a lathe every time the dresser work is performed, and also enables unmanned grinding work in a combined machining lathe. The purpose is to do.

(D). Means for Solving the Problem That is, the present invention is configured by providing the tool storage means (6a) with one or more dresser devices (7).

It should be noted that the numbers in parentheses indicate the corresponding elements in the drawings for the sake of convenience, and thus the present description is not limited to the description in the drawings. The following “(e).
The same applies to the column of "action".

(E). Action With the above-described configuration, the present invention drives the tool magazine (5) when dressing the grinding tool (19),
The tool storage means (6a) equipped with the dresser device (7) is positioned at a predetermined dressing position (X), and in that state, the dressing work is started.

(F). Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 is a plan view showing an embodiment of a tool magazine according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is an enlarged view of a dresser device portion, and FIG. 4 is another embodiment of the present invention. The figure which shows an example, FIG. 5 is a figure which shows an example of the vertical lathe to which one Example of the tool magazine by this invention was applied, and FIG. 6 shows a mode at the time of performing dressing with the vertical lathe of FIG. The figure, FIG. 7 is an enlarged view of the periphery of the positioning device, FIG. 8 is a view showing the operation of the positioning device of FIG. 7, and FIG. 9 is a view on arrow IX in FIG.

As shown in FIG. 5, a composite machining vertical lathe 1 capable of both turning with a fixed tool such as a bite and rotating with a rotary tool such as a drill and a grinder is shown in FIG.
It has a column 12 and the cross rail is on the column 12.
13 is movably supported in the directions of arrows A and B, that is, in the vertical direction. A saddle 16 is supported on the cross rail 13 by a motor 15 mounted on the cross rail 13 so as to be movable and driven in the C and D directions perpendicular to the A and B directions, that is, in the horizontal direction. 17 is arrow A, B
It is provided so that it can be driven to project in any direction. A tool 19 is mounted and supported at the lower end of the ram head 17 in the drawing, and a bracket 2 is provided at the right end of the cross rail 13 in the drawing. As shown in FIG. 2, the bracket 2 is provided with a drum driving device 3, and the drum driving device 3 includes:
In the lower part of the figure, a tool magazine 5 according to the present invention is supported via a shaft 5d so as to be rotatable and driven in the directions of arrows E and F in FIG.

As shown in FIG. 1, the tool magazine 5 has a main body 6 which is formed into a disc shape as a whole, and a plurality of tool holding pockets 6a are formed on the outer peripheral portion of the main body 6 at equal intervals. Has been done. A rotary tool such as a drill, a tap, a grinder, and a turning tool such as a cutting tool can be selectively mounted and held in each tool holding pocket 6a. Among the tool holding pockets 6a described above, in the specific tool holding pocket 6a,
As shown in FIGS. 1 and 3, the dresser device 7 is detachably attached and fixed through an appropriate fastening means such as a bolt, and the dresser device 7 is formed in a flat plate shape, and has a tool holding pocket 6a. It has a connecting portion 7a for making the connection.
The connecting portion 7a is provided with an arm 7b, and the tip of the arm 7b is provided with a dresser supporting portion 7c. A dresser 9 made of diamond is removably attached to the dresser support portion 7c via fastening means such as bolts.

On the other hand, the tool holding pocket 6a in which the dresser device 7 is mounted
On the other hand, as shown in FIG. 2, a positioning pin 23 is planted on the rim 6b of the main body 6 which is displaced by approximately 90 ° in the direction of arrow F in FIG. A positioning device 10 is provided on the right side surface of FIG. Positioning device 10
Is a positioning rod 10 as shown in FIG. 7 and FIG.
a is swingably supported around the pin 10b in the directions of arrows G and H, and the drive cylinder 10c is attached to the tip of the rod 10a.
The rod 10d is pivotally attached. The rod 10d of the drive cylinder 10c is provided so that it can be driven to project in the directions of arrows I and J.

A table 20 is provided below the column 12 in FIG. 5 so as to be rotatable around a center 20a, and a plurality of table holders 21 are provided on the table 20.

Since the vertical lathe 1 has the above-mentioned configuration, when processing the work piece 22, the work piece 22 is fixedly held on the table 20 via the placing claw base 21, and depending on the working content. table
The work piece 20 is rotated together with the work piece 22 in a predetermined direction or fixedly held at a certain rotation angle position. Then cross rail
13 and tool 19 (regardless of type of rotary tool or turning tool)
The ram head 17 equipped with the tool is appropriately moved and driven in the A and B directions, and the saddle 16 is appropriately moved in the C and D directions, and the cutting edge of the tool 19 is processed.
Processing is performed by contacting a predetermined position on 22.

Further, for the tool exchange, the saddle 16 is moved in the D direction together with the ram head 17, and the drum driving device 3 is driven to appropriately rotate the tool magazine 5 in the arrow E and F directions in FIG.
The tool holding pocket 6a for accommodating the tool 19 currently mounted on the ram head 17 is positioned at a predetermined tool exchange position X. Since the tool holding pocket 6a positioned at the tool exchange position X and the tool 19 of the ram head 17 face each other as shown in FIG. 5, the saddle 16 is further moved together with the ram head 17 in the direction of arrow D in that state. To move. Then,
The tool 19 mounted on the ram head 17 has the tool holding pocket 6a of the tool magazine 5 as shown by the white arrow in FIG.
From the opening 5c to the center of rotation CT of the tool magazine 5,
The tool fits in the tool holding pocket 6a and is held in that state.

Next, the ram head 17 is raised in the direction A to release the engagement holding relationship between the tool 19 and the ram head 17, and the drum driving device 3 is driven to move the tool magazine 5 to the arrow E, F.
The ram head 17 and the tool to be mounted next on the ram head 17 are opposed to each other by rotating the ram head 17 by a predetermined angle in the direction. When the tool 19 and the ram head 17 face each other at the tool exchange position X, the ram head 17 is projected again in the B direction, and the tool on the tool magazine 5
Mount the ram head 17 to the ram head 17, and then saddle the ram head 17
With the tool 19 mounted on the ram head 17 while being driven in the direction C together with 16, the tool is removed from the tool magazine 5 and the tool exchange is completed.

As described above, the ram head 17 can be equipped with a rotary tool in addition to the turning tool, but when a grinding tool such as a grinder is used as the rotary tool, at a constant time of grinding work, It is necessary to dress. In that case, first, as shown in FIG. 6, with the grinding tool 19 mounted on the ram head 17, the tool magazine 5 is appropriately rotated in the arrow E and F directions in FIG. Drive it.

In addition, at the start of dressing, in the numerical control device of the vertical lathe 1, a timer or the like is used to determine by integrating the operating time of the grinding tool, or a change in the load current value during grinding, etc. Although any of the above methods can be used, all of them are known methods, and therefore detailed description thereof will be omitted here.

In this way, when the tool magazine 5 rotates in the E and F directions and the dresser device 7 is positioned at the tool exchange position X shown in FIG. 1 which is also the dressing position, the drum drive device 3 stops the rotation of the magazine 5. At the same time, the magazine 5 is held at that position. At this time, as shown in FIG. 8, the rod 10d of the drive cylinder 10c of the positioning device 10 has an arrow J
In this way, the positioning rod 10a is rotated in the direction of arrow H about the pin 10b. Then, the tip 10c of the rod 10a also rotates in the H direction, and as shown in FIGS. 8 and 9, comes into contact with the lower surface of the positioning pin 23 shown in FIG. Then, the magazine 5 receives a rotational force in the direction of the arrow E via the pin 23, and slightly rotates so as to absorb the backlash in the directions of the arrows E and F generated when the drum driving device 3 is positioned. As a result, the dresser device is rotated. 7 is accurately positioned and held at a predetermined dressing position.

In this state, the saddle 16 is moved together with the ram head 17 in the direction of arrow D, and the grinding tool 19 and the dresser 9 of the dresser device 7 which are in a rotating state are brought into contact with each other as shown in FIGS. Perform dressing work. At the time of dressing, a force for rotating the tool magazine 5 acts on the tool magazine 5 from the rotating grinding tool 19 via the dresser device 7, but the tool magazine 5 is moved by the positioning device 10 by the arrow E. , And the backlash in the F direction is absorbed so that the magazine 5
Does not generate vibration in the directions of arrows E and F, and the dressing work is smoothly performed. Also, when dressing,
Since the position of the dresser 9 on the tool magazine 5 is always a fixed position corresponding to the tool exchange position X, the dressing work of the grinding tool 19 can be executed in a programmable manner.

When the predetermined dressing work is completed, the grinding tool
19 is moved in the direction of arrow C to release the contact relationship between the tool 19 and the dresser 9. Next, the rod 10d of the drive cylinder 10c of the positioning device 10 is driven in the direction of arrow I in FIG. 8 to move the positioning pin 10a in the direction G, and as shown in FIG. The engagement relationship with is released. Then, the tool magazine 5 can be rotated in the directions of arrows E and F, and the next tool exchange operation is immediately started.

Further, in the above-described embodiment, the dresser 9 is the dresser device 7 mounted toward the outside of the tool magazine 5 as shown in FIG. 3, but the setting mode of the dresser 9 is dressing. It can be set in any way by the power grinding tool, and it is naturally possible to set it in the shape facing upward in the figure as shown in FIG. 4, for example.

Further, the number of the dresser devices 7 mounted on the tool magazine 5 may of course be one or more or any number as required.

Further, when the dressing device 7 is detachably attached to the tool holding pocket 6a by using a bolt or the like as in the present embodiment, the dressing device 7 is removed and the removal is performed for the processing not performing the grinding work. The pocket 6a can be used for storing other tools, and the tool magazine 5 can be effectively used.

(G). EFFECTS OF THE INVENTION As described above, according to the present invention, one or more dresser devices 7 are provided in the tool storage means such as the tool holding pocket 6a.
Since the dressing work is performed, the dresser device 7 can be positioned at a predetermined dressing position such as the tool changing position X by rotating the tool magazine 5 and the dresser device 7 can be dressed by the dresser. It is not necessary to install the device 7 on the table 20, etc., and the work can be performed efficiently in a short time. In addition, the dresser device 7
Since it is mounted on the tool magazine 5, the position of the dresser 9 during dressing can always be set to a constant position. Therefore, the dressing work including the approach of the grinding tool to the dresser device 7 can be programmed. It is possible to set it, and it is possible to completely unmanned the grinding work.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of a tool magazine according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is an enlarged view of a dresser device portion, and FIG. Is a view showing another embodiment of the present invention, FIG. 5 is a view showing an example of a vertical lathe to which an embodiment of the tool magazine according to the present invention is applied, and FIG. 6 is a vertical lathe of FIG. FIG. 7 is a view showing a state of performing dressing, FIG. 7 is an enlarged view of the periphery of the positioning device, FIG. 8 is a view showing the operation of the positioning device of FIG. 7, and FIG. 9 is a view taken along the line IX in FIG. Is. 5: Tool magazine 6a: Tool storage means (tool holding pocket) 7: Dresser device 19: Tool

Claims (1)

[Claims] 1. A tool magazine around which a tool storage means for storing a rotary tool and a turning tool is provided, wherein the tool storage means is provided with one or more dresser devices. Tool magazine to do.