JPH0215939A - Magazine drum with sub-drum - Google Patents

Abstract

PURPOSE:To house many tools, form a compact magazine drum and improve production efficiency by providing a large drum pivotally supporting a plurality of sub-drums and an indexing mechanism for indexing and turning the sub-drums in turn to the receiving side of a headstock. CONSTITUTION:When tools 17 and 17 are clamped with the claws 27 and 27 of an arm 25, a flat plate 21 and the arm 25 are kept opposite to each other in a 180-degree turned condition and the arm 25 moves to the side of a sub-drum 2, thereby causing the claws 27 and 27 to clamp the tools 17 and 17 concurrently and raising the arm 25 with a cylinder 30 for pulling out the tools 17 and 17 from pots 19 and 19. Then, the arm 25 is turned by 90 degrees, and a column 8 is shifted in an X-X axis direction, thereby positioning the tools 17 and 17 and main spindles 5a and 5b at positions opposite to each other. Thereafter, after the main spindles 5a and 5b, and the tools 17 and 17 are so aligned so to agree to X- and Y-directions, the arm 25 is shifted in a direction perpendicular to the illustration, and the tools 17 and 17 are inserted between the main spindles 5a and 5b. Tool mounting is completed as aforementioned, and the aforesaid process is reversed for the exchange of the tools for others.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a child drum suitable for storing a large number of tools in a small space because the same number of tools can be inserted into a plurality of spindles at the same time. The present invention relates to a magazine drum having a.

[Conventional technology]

In machine tools with automatic tool changers.

A magazine drum is generally provided that is located near the machine and stores a large number of tools. A desired tool is inserted into the spindle from the magazine drum via a tool transfer device, and a used tool in the spindle is returned into the magazine drum.

In the case of general machine tools, the main spindle that is supported by the headstock is often a single one, and the number of tools that can be inserted into it is not so large, so a single magazine drum is placed near the machine. Most machine tools equipped with automatic tool changers either have such a structure or are equipped with a plurality of magazine drums of the same shape.

[Problem to be solved by the invention]

However, depending on the type of machine tool, the headstock is equipped with a plurality of spindles, for example two spindles, and tools of the same shape are inserted into these spindles at the same time, machining two parts of the workpiece at the same time, thereby increasing production efficiency. Some are configured to improve.

A special case may also occur in which tools of different types are inserted into the two spindles at the same time.

In order to meet the above needs, problems arise in that the tool receiving device has to be complicated and expensive, and the magazine drum has to be extremely large. Therefore, the floor space occupied by the machine also increases.

The present invention solves the above-mentioned problems, etc., and is designed to store a large number of tools and be relatively small in size. The tool tray and transfer device are also compactly accommodated, which improves production efficiency and occupies floor space. It is an object of the present invention to provide a magazine drum having a child drum whose area can be reduced.

[Means to solve the problem]

For this purpose, the present invention includes a child drum having at least two sets of pot groups for storing the same number of tools as the number of spindles, and a plurality of the child drums arranged around its outer periphery.

A large drum rotatably supports the child drum around a central axis, and an indexing mechanism configured to sequentially index and rotate the large drum as many times as the child drums toward the headstock. This constitutes a magazine drum having a child drum.

[Effect]

In the tool receiver, a transfer device pulls out desired tools corresponding to the number of spindles from the child drums on the large drum and inserts them into the spindles at the same time. In addition, the tools in the main spindle that are no longer used are simultaneously pulled out by the tool receiver and then stored in the group of pots in the child drum, which is indexed and waiting at a fixed position on the large drum. The magazine drum is formed from a small size and can increase the tool exchange speed.

(Example〕 An embodiment of the present invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, in the vicinity of the machine tool 10, a large drum 1, a tool receiver, and a magazine frame 3 supporting a transfer device 4 are combined in a structure having appropriate rigidity. In this embodiment, the large drum 1 consists of a decahedron,
An indexing mechanism 7 fixed to this allows indexing by 10.

Ten sets of child drums 2 are supported on the outer periphery of the large drum 1, respectively. In addition, the machine tool 10 is mounted on the bed 9,
It consists of a column 8 that moves along the xx axis in the figure and the Z - Z @ line perpendicular to the plane of the drawing, and a headstock 6 etc. that is supported by the column 8 so as to be slidable along the Y-Y axis. The headstock 6 is provided with a main shaft 5 having two main shafts 5a and 5b. The pitch between the main shaft 5a and the main shaft 5b is indicated by the dimension a.

As mentioned above, the large drum 1 consists of a 10-sided structure.

0 where the indexing plate 11 of the indexing mechanism 7 is fixed
Ten grooves 12 are provided in the index plate 11,
A cam follower 13 is fitted into the groove 12 to index and position the □1 indexing plate 11. Note that the cam follower 13 is pivotally supported by the magazine frame 3. Further, an indexing rotation motor 14 fixed to the magazine frame 3 is connected to the indexing plate 11, and rotates the motor 14 for indexing. In other words, the motor 14 for index rotation is 10
When the cam follower 13 rotates by one-tenth and fits into the groove 2, the large drum 1 indexes and rotates by one-tenth, and moves one of the child drums provided on the outer circumference to a fixed position (first It is configured to perform indexing and rotational positioning at a position indicated by reference numeral A in FIGS. In this embodiment, the child drum 2 is a pot 18. which holds two identical tools 16.16.
18 and a pot 19.19 containing two other identical tools 17.17,
It is pivotally supported on the large drum 1 by a shaft 20. Further, a flat Fi 21 is integrally formed on the tip side of the shaft 20 and is disposed so as to protrude inside. As shown in FIG. 3, a motor 22 is fixed to the magazine frame 3 at the fixed position A, and the motor 22 has a boss having a groove 23 into which the flat plate 21 of the child drum that has been rotated to this position is fitted. The portion 24 is fixed. Therefore, by rotating the motor 22, the child drum 2 is rotated, and in this embodiment, the motor 22 is configured to rotate in 90 degree increments (forward and reverse).

Also, pots 18 (19) and 18 (19) of child drum 2
) matches the pitch dimension a of the main shafts 5a, 5b.

The arm 25 of the transfer device 4 has a pair of claws 26.26 for simultaneously holding the tool 16.26 and the tool 17.26.
The claw 26 (27) consists of four claws 26, 26, 27.27 consisting of a pair of claws 27.27 for simultaneously holding the claws 26 (27).

The pitch within 26 (27) is also formed to the dimension a.

Further, as schematically shown in FIG. 4, the arm 25 is formed to be indexed and rotated by 90 degrees by a motor 28 and a gear group 29 connected thereto, and is also formed to be able to move up and down by a cylinder 30. . This vertical movement stroke is caused by the tool 16 inserted into the pot 18 (19) etc.
17), 16 (17) can be pulled out from the pot 18 (19) or the main shafts 5a, 5b. Further, although a detailed explanation will be omitted, there are at least one arm 25 that is formed to be movable along the XX axis direction.

By arranging the child drums 2 on the large drum 1, one set of 4
It is possible to form a magazine drum 100 with 10 sets of tools. Moreover, as shown in the figure, it is only necessary to support a single large drum 1 on the magazine frame 3.

Next, according to Figures 5 to 9, the amount of tools is determined by the transfer device I\4.
A method of inserting the tools 16 and 16 into the spindles 5a and 5b using the following will be briefly explained.

Figure 5 shows tool 16. ．． 16 is the claw 26 of the arm 25. .

26 are in opposing positions, that is, the child drum 2 is positioned at this position by indexing rotation of the large drum 1. If tool 17.17 is in arm 2
5, rotate the flat plate 21 that fits into the groove 23 of the boss part 24 of the motor 22 by 180 degrees,
The arm 25 also rotates 180 degrees, and the tool 17.17 and the claw 27
．． 27 should be confronted.

Next, as shown in FIG. 6, the arm 25 is moved toward the child drum 2 (in the
Then, the claws 25 are lifted by the cylinder 30 and the tools 16, 16 are pulled out from the pots 18, 18.

Next, as shown in FIG. 7, the arm 25 is rotated by 90 degrees. The arm 25 and the column 8 are moved relative to each other in the X-X axis direction, and the tool 16.16 and the main shafts 5a, 5b are positioned at positions facing each other in the X-X axis direction. Next, after moving the spindles 5a, 5b in the Y-Y axis direction and aligning the spindles 5a, 5b and the tools 16, 16 to matching positions in the X and Y directions, the arm 25 is moved by the cylinder 30 in the Z- Moving in the Z-axis direction, the main shaft 5a,
Insert tool 16.16 between 5b. As a result of the above, the main shaft 5
The insertion of the tool 16.16 into a, 5b is completed. Main shaft 5
If the tools 16 and 16 in a and 5b are to be pulled out and replaced with another tool (for example, 17 and 17), the steps described above may be reversed.

As described above, the large drum 1 is indexed and rotated, the desired child drum 2 is indexed and positioned at the fixed position A, and the desired tool in the child drum 2 is directed toward the spindle, thereby automatically inserting and retracting the tool. To.

And it can be done quickly.

In this embodiment, the child drum 2 includes four pots 18°, 18.19.
19, and a decahedron with the large drum 1, but of course the present invention is not limited to this. Also the same tool 1
6, 16 or tools 17° 17 are inserted into the spindles 5a, 5b at the same time, but by changing the tools stored in advance in the child drum 2, different types of tools can be inserted into the spindles 5a, 5b at the same time.
Although the machine for rotating the child drum 2 and the rotation and movement mechanism of the arm have been described in this embodiment, the present invention is not limited thereto.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, m-
The large drum and the child drum attached to it allow tools of the same or different types to be replaced simultaneously and quickly and smoothly in multiple spindles, improving production efficiency and making the magazine drum more compact. smaller, more compact, and cheaper.
Moreover, the floor space occupied can be reduced, and the amount of tools and transfer equipment can be reduced to a relatively compact one.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the state of the large drum of the present invention/embodiment and the child drum attached to its outer periphery, and Fig. 2 is a front view of the present embodiment and the machine tools disposed in the vicinity. FIG. 3 is a side view of an embodiment for explaining the rotation operation of the child drum, and FIG. 4 is a sectional view of an embodiment for rotating and moving the tool receiver. , FIG. 5 to FIG. 9 are front views for explaining the operation of the embodiment. DESCRIPTION OF SYMBOLS 1...Large drum, 2...Sub drum, 3...Magazine frame, 4...Tool receiver is a transfer device, 5° 5a, 5b.
...Main spindle, 6... Headstock, 7... Indexing mechanism, 8
...Column, 9...Bed, 10...Machine tool,
11... Index plate, 12, 23... Groove 51
3...Cam follower, 14,22.28...Motor, 15...Fixed position, 16.17...Tool, 18.1
9... Pot, 20... Shaft, 21... Flat plate, 24
...Boss part, 25...Arm, 26.27...Claw, 29...Gear group, 30...Cylinder, 100...Magazine drum.

Claims (1)

[Claims] In a magazine drum arranged to simultaneously insert the same number of tools into a plurality of spindles supported by the headstock of a machine tool having an automatic tool changer, a group of pots for storing the same number of tools as the number of spindles is provided. At least two sets of child drums are arranged, a large drum having a plurality of child drums arranged around its outer periphery and pivotably supporting the child drums around its central axis, and a plurality of child drums on the large drum. A magazine drum having a child drum, characterized in that it has an indexing mechanism that sequentially indexes and rotates toward the receiving side of the headstock.