JPS63200941A - Automatic work and tool exchanger in nc compound machine tool - Google Patents

Abstract

PURPOSE:To perform a work change with a work magazine and a tool change with a tool magazine in an efficient manner, by installing an exchanging arm, exchanging a work and a tool, in a symmetrical position of one side of turret heads free of detachment. CONSTITUTION:A second turret head 4 is moved up to a tool changing position, each exchanging arm 6 attached to a symmetrical position is expanded or contracted, and on the one hand, a tool T of a first turret head 3 is clamped and on the other hand, a tool T of a tool magazine 8 is clamped respectively, then the head 4 is once moved up to the specified position, turning rotate as far as 180 deg., thus a tool exchange takes place. Next, the second turret head 4 is moved to a work exchanging position, and likewise, a machined work W to be held by a chuck 2 is clamped by one side of exchanging arms 6 and on the other hand, a work W of a work magazine 7 is clamped respectively, thus a work exchange takes place. Thus, work and tool exchanging is automatically performable so easily and efficiently without using expensive installation and equipment.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic workpiece and tool changer in a numerically controlled multi-purpose machine tool (turning center), and more specifically, to an automatic workpiece and tool changer in a numerically controlled compound machine tool (turning center), and more specifically, to In a table-type numerically controlled compound machine tool, a removable exchange arm is installed on one side of the turret head to automatically exchange the work between the work magazine and the chuck, and between the tool magazine and the turret head. This invention relates to an automatic workpiece and tool changer in a control complex machine tool.

[Prior art]

A numerically controlled complex machine with a quick exchange function that automatically exchanges tools conventionally stored in a tool magazine installed on the side of the machine and tools mounted on the machine's turret via an exchange arm. Machines (turning centers) are known, and among these numerically controlled compound machine tools, a two-turret tool rest type for the purpose of shortening machining time has also been known.

By the way, in conventional numerically controlled compound machine tools, when exchanging workpieces between the workpiece magazine and the chuck and exchanging tools between the tool magazine and the turret, the operator must do it manually or change the workpieces. A robot dedicated to tool exchange was placed on the side of the machine, or an automatic tool exchange device was installed on the machine.

However, as mentioned above, if workers perform replacement work one at a time, work efficiency is extremely poor, and robots dedicated to work and tool replacement are placed on the side of the machine, and even automatic tool replacement is required. When equipping a device with a switching device, expensive equipment investment is required.

[Purpose of the invention]

This invention was devised by focusing on the above-mentioned conventional problems, and its purpose is to detachably attach an exchange arm to the turret of a numerically controlled compound machine tool, so that the workpiece magazine and chuck can be connected to each other. By making it possible to automatically exchange work pieces or exchange tools between the tool magazine and the turret head, it is possible to improve the work efficiency of the exchange work, and it is also possible to exchange work pieces or exchange tools without having to invest in expensive equipment as in the past. Provides an automatic work and tool change device for a numerically controlled compound machine tool that allows tool changes to be performed automatically and can also be used as a normal machine tool when a change arm is not installed. It is something to do.

[Structure of the invention]

In order to achieve the above object, this invention provides a removable exchange arm at a symmetrical position of one turret head of the machine for exchanging work between the work magazine and the chuck and exchanging tools between the tool magazine and the turret head. It can be used as a conventional machine tool or as a machine tool with tool exchange and workpiece exchange, improving the work efficiency of exchange work, and allowing workpiece exchange and workpiece exchange without the expensive equipment investment required in the past. The gist of this is that tool exchange can be performed automatically.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

FIG. 1 shows an overall perspective view when the present invention is implemented in a numerically controlled compound machine tool 1 with two turret tool stands.
3 and 4 are first and second turret heads on which the horizontally movable and rotatable tools T are attached; 5 is provided on the first turret head 3 and the second turret head 4; This holder head 5 includes:
A tool T and workpiece W exchange arm 6 is detachably attached.

Further, 7 is a work magazine installed on the side of the numerically controlled compound machine tool 1, that is, at a position where the workpiece W can be replaced by the exchange arm 6, and 8 is installed at a position where the tool T can be exchanged by the exchange arm 6. Showing tool magazine.

The exchange arm 6, as shown in FIGS. 2 and 3,
It is composed of two clamp claws 9a and 9b that can clamp the workpiece W and the tool T, and an expansion/contraction mechanism 10 such as a parallel link that can open and close the clamp claws 9a and 9b via a drive mechanism such as a cylinder (not shown). , the expansion/contraction mechanism 10
A mounting shaft 12 is provided which can be detachably mounted to a spindle holder part 11 provided on the holder head 5 of the second talent rod 4.

The inside of the spindle holder part 11 is formed into a tapered shape, and a draw rod 14 provided with a plurality of locking balls 13 is movably provided in the center thereof. Also, the tip of the shaft 12 is attached to the spindle holder part 110.
It has a tapered shank to fit into a tapered hole, and a recess 15 into which the draw loft 14 fits and an engagement recess 16 into which the locking ball 13 engages are formed at the center of the tip. ing.

Next, the operation when exchanging the work W between the work magazine 7 and the chuck 2 and when exchanging tools between the tool magazine 8 and the second turret head 4 will be explained.

Figure 6 shows the work W between the work magazine 7 and the chuck 2.
2 shows a front view and a side view of the exchange of the second turret head 4, in which the second turret head 4 has moved to a position where the workpiece W can be exchanged, and the exchange arm is attached to a symmetrical position (180 degree position) of the second turret head 4. While expanding and contracting the clamp claws 9a and 9b of 6 through the expansion/contraction mechanism 10, one exchange arm 6 clamps the finished workpiece W, and the other exchange arm 6 stores it in the workpiece magazine 7. The unprocessed workpiece W is clamped.

Then, the second turret head 4 is once retreated to a predetermined position, the rad 4 is rotated 180 degrees to the second turret, and in this state, it is moved again to the position of the work magazine 7 and chuck 2 to accommodate each work W. It is something that can be installed or installed.

7 shows a side view of the exchange of the tool T between the first turret head 3 and the tool magazine 8, in which the second turret head 4 is moved to a position where the tool T can be exchanged, and the second turret head 4 is moved to a position where the tool T can be exchanged, and 2 Symmetrical position of turret head 4 (1
While expanding and contracting the clamp claws 9a and 9b of the exchange arm 6 attached at the 80 degree position) via the expansion and contraction mechanism 10, one exchange arm 6 clamps the tool T that has been processed, and the other The tool T to be used for the next machining stored in the tool magazine 8 is clamped by the exchange arm 6.

Then, the second turret head 4 is once moved to a predetermined position, the second talent head 4 is rotated 180 degrees, and in this state, it is moved again to the position of the tool magazine 8 and the first turret head 3, and each tool T is moved. to accommodate,
It is something to be installed.

The individual operating states of the tool exchange and workpiece exchange described above are shown in Figures 8 (al to 8 (el) and Figure 9 (al
-FIG. 9(e).

The tool exchange operation sequence shown in FIGS. 8(a) to 8(e) is as follows: move the second talent head 4 from the state shown in FIG. While expanding and contracting the clamp claws 9a and 9b of the exchange arm 6, which are attached to two turret heads 4 at symmetrical positions (180 degree positions), via the expansion and contraction mechanism 10, the tool that has been processed is removed using one exchange arm 6. The tool T to be used for the next machining, which is stored in the tool magazine 8, is also clamped by the other exchange arm 6.

Then, in FIG. 8 (C1), the second talent head 4 is moved to a predetermined position, and the second talent head 4 is
The tool T is rotated 80 degrees and moved again to the position where the tool magazine 8 and the first turret head 3 are located as shown in FIG.

Then, the second turret head 4 returns to the state shown in FIG. 8(Q), and the tool exchange operation is completed.

When replacing another tool T, this can be easily done by rotating the first turret head 3 and tool magazine 8 to the position of the desired tool and performing the above operations.

Next, the workpiece exchange operation sequence shown in FIGS. 9(a) to 9(e) is as follows: From the state shown in FIG. As shown in FIG.
While expanding and contracting the machine via the expansion and contraction mechanism 10, one exchange arm 6 clamps the workpiece W that has been processed, and the other exchange arm 6 clamps the workpiece W to be processed next stored in the workpiece magazine 7. to be clamped.

Then, as shown in FIG. 9(C), once the second turret head 4 is moved to a predetermined position, the second turret head 4 is
Rotate 180 degrees.

Then, as shown in FIG. 9(d), the workpieces W are moved again to the positions of the tool magazine 8 and chuck 2 in the above state, and each work W is inserted into the tool magazine 8 and chuck 2.

When such workpiece replacement work is completed, the second turret head 4 returns to its original state as shown in FIG. 9 (el), and the workpiece replacement work is completed.

As described above, by attaching the workpiece and tool exchange arms 6 to the symmetrical positions of the second turret head 4 of the conventional numerically controlled compound machine tool 1, it is possible to easily change the workpiece without using expensive equipment or equipment. and tools can be exchanged.

Note that the above embodiment describes an example in which two exchange arms 6 are attached to a two-turret turret type numerically controlled compound machine tool 1 to exchange workpieces and tools. However, in the one-turret type numerically controlled compound machine tool 1, only the workpiece W is exchanged using the exchange arm 6 mounted on the turret.

〔Effect of the invention〕

This invention allows tools stored in a tool magazine installed on the side of a machine as described above and tools that are equipped with at least one turret head and are attached to the turret head to be exchanged via an exchange arm. In a numerically controlled complex machine tool that automatically exchanges tools, an exchange arm that exchanges work between the work magazine and the chuck or between the tool magazine and the turret head can be attached and detached at a symmetrical position of one of the turret heads of the machine. Since it was set up in
Workpiece exchange between the work magazine and chuck and tool exchange between the tool magazine and turret can be performed automatically, which improves the efficiency of the exchange work and eliminates the need for expensive equipment investment as in the past. It also has the advantage of being able to automatically exchange workpieces and tools, and can also be used as a normal machine tool if no exchange arm is attached.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of a numerically controlled compound machine tool embodying the present invention, Figs. 2 and 3 are front and side views of the exchange arm, and Figs. 4 and 5 are the first turret head and the second turret head. A front view of the tall left head, Fig. 6 is a side view showing workpiece exchange operation, Fig. 7 is a side view showing tool exchange, Fig. 8 T
a) to FIG. 8 (el is an explanatory diagram showing the tool exchange operation order, and FIG. 9 (al to FIG. 9 (e) are explanatory diagrams showing the workpiece exchange operation order. 1... Numerical control complex machining Machine, 2...Chuck, 3
...First turret head, 4...Second turret head, 6...Exchange arm, 7...Work magazine, 8
...Tool magazine, W...Work, T...Tool.

Claims (1)

[Claims] Numerical control that automatically exchanges tools stored in a tool magazine installed on the side of the machine and tools equipped with at least one turret head and attached to the turret head via an exchange arm. In a compound machine tool, at a symmetrical position of one turret head of the machine,
An automatic work and tool exchange device for a numerically controlled compound machine tool, characterized by a detachable exchange arm for exchanging works between a work magazine and a chuck or exchanging tools between a tool magazine and a turret head.