KR200249683Y1 - a tool unclamp cylinder device of the ATC - Google Patents

Abstract

Shut-off valve 31 for removing when overpressure is applied to regulator 32 and hydraulic converter 33, regulator 32 for maintaining oil 11 constant pressure, and regulator 32 described above. A hydraulic converter 33 for replenishing the oil 11 in the cylinder when pneumatic pressure is applied, and a check valve 34 provided between the hydraulic converter 33 and the cylinder to prevent backflow. The tool unclamp cylinder device of the automatic tool changer, which is included in the tool, can be used to automatically unclamp the tool together with the oil supply without using a shift cam.

Description

Tool unclamp cylinder device of automatic tool changer

The invention relates to the control of a tool unclamp cylinder device of an automatic tool changer, and more specifically, to unclamp the tool automatically with oil supply without the use of a shift cam. The present invention relates to a control device of a tool unclamp cylinder device of an automatic tool changer, which can be made as well as low cost.

Machine tools used for the purpose of processing metals or non-metal materials into shapes and dimensions by means of various cutting or non-cutting methods or by using a suitable tool or for more precise machining on semi-materials are called machine tools. The above-mentioned machine tool is called a cutting machine tool in which a chip is generated in a machining process, and a non-cut machine tool in which a chip is not generated in a machining process is called a metal forming machine. The above cutting machine tools include lathes, milling machines, machining centers, drilling machines, boring machines, grinding machines, gear cutters, special processing machines, and the like. The metal forming machines include mechanical presses, hydraulic presses, and cutting machines. Bending machine, forging machine, drawing machine and the like.

Thanks to the trend of general industrialization, cutting machine tool automation and numerical control (NC) are also rapidly progressing. In recent years, multi-functional machining centers have emerged due to the complex combination of numerical control (NC) of machine tools, which has been divided into rotary lathe series and milling series, and the market has been supported by the wide demand of industrial sites. It is expanding rapidly. The above-mentioned machining center is an NC machine tool which automatically performs several kinds of cutting operations in one machine, and is usually equipped with an automatic tool change function and a function of automatically cutting and dividing two or more surfaces of a workpiece. Machining centers can be divided into two types: machining non-rotating parts and machining rotating parts, regardless of where the roots of the development are located. Machining centers for non-rotating parts have been developed using the NC milling machine or NC drilling machine to be machined as a power generation matrix, including automatic tool changer (ATC), fouling magazine and automatic The machining center was created by combining the Automatic Pallet Change (APC). On the other hand, the machining center for rotating parts uses NC lathe as the power generation matrix, and the rotating parts are processed in various ways such as angular splitting, grooving, hole making, tapping, etc. The device also has a device, and while the workpiece is held by a separately prepared chuck, and the finished workpiece is released from the chuck, the detachment of the workpiece is automated.

As described above, in general, an automatic tool changer is installed in the machining center. The tool unclamp cylinder device of the automatic tool changer is configured as shown in FIG. 1, and the operation is performed as follows. .

In the case of manually unclamping the tool, when air is introduced through the unclamp valve 8 to push the second piston 5 to the left, between the second piston 5 and the first piston 3 The oil 11 moves the first piston 3 to the left. When the first piston 3 is moved to the left, the spring 2 is moved by the operation of the first piston 3. As it is compressed, the connector 1 unclamps the tool by operating the drawbar 12.

In the case of automatically unclamping the tool, a control device as shown in FIG. 2 is used. The oil 11 compressed from the cylinder 22 is rotated by the rotation of the shift cam 21 in the twin arm box. Through the hydraulic line circuit, it is supplied to the tool unclamp cylinder to lower the first piston (3), and the connector (1) at the end of the shaft, which is assembled together with the first piston (3) descends, drawbar (12). ) To unclamp the tool. And, the oil 11 is made of a structure that is supplemented through the shut-up valve 23 through the regulator 25 and the hydraulic booster (24).

However, such a control device of the tool unclamp cylinder device of the conventional automatic tool changer has a problem that the hydraulic circuit is complicated and the manufacturing cost is high because the shift cam is used.

The object of this invention is to solve such a conventional problem, and it is possible to automatically unclamp the tool with oil supply without using a shift cam, and also to manufacture a tool which is low in cost. To provide a tool unclamp cylinder device.

1 is a block diagram of a tool unclamp cylinder device of a general automatic tool changer.

2 is a configuration diagram of a control device of a tool unclamp cylinder device of a conventional automatic tool changer.

3 is a block diagram of a control device of a tool unclamp cylinder device of an automatic tool changer according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

31: shut-up valve 32: regulator

33: hydraulic converter 34: check valve

DETAILED DESCRIPTION Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. . Other objects, features, and operational advantages, including the purpose, operation, and effect of this design, will become more apparent from the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, and the technical spirit of the present invention is not necessarily limited or limited only by this embodiment. However, various changes, additions and changes are possible within the scope without departing from the technical spirit of the present invention, as well as other equivalent embodiments.

As shown in FIG. 3, the configuration of the control device of the tool unclamp cylinder device of the automatic tool changer according to the embodiment of the present invention is provided to the regulator 32 and the hydraulic converter 33 when overpressure is applied. Shut-off valve 31 to be removed by transmission, regulator 32 to maintain oil 11 at constant pressure, and oil 11 in cylinder when pneumatic pressure is applied from regulator 32 And a check valve 34 installed between the hydraulic converter 33 and the cylinder to prevent backflow.

The regulator 32 is more preferable if the oil to maintain a pressure of 0.5 ~ 1Kgf / ㎠.

According to the above configuration, the action of the tool unclamp cylinder device of the automatic tool changer according to the embodiment of the present invention is as follows.

When air is introduced through the unclamp valve 8 to push the second piston 5 downward when the tool is unclamped, the tool is located between the second piston 5 and the first piston 3. The oil 11 moves the first piston 3 downward. When the first piston 3 is moved downward, the spring 2 is compressed by the operation of the first piston 3. The connector 1 actuates the draw bar 12 to unclamp the tool.

In this case, when air of 0.5 to 1 Kgf / cm 2 is supplied to the hydraulic converter 33 through the regulator 32, the oil in the hydraulic converter 33 passes through the check valve 34 and is supplied into the cylinder to supply oil 11. ) To replenish.

If air and overpressure are generated inside the cylinder containing the oil 11 after the tool is changed by the automatic tool changer, the above air and overpressure are supplied to the regulator 32 and the hydraulic converter 33 through the shutdown valve 31. ) Is extinguished in the regulator 32 and the hydraulic converter 33. At this time, the shut-up valve 31 is opened and closed for about 5 seconds.

As described above, in the embodiment of the present invention, the tool of the automatic tool changer having the effect of lowering the manufacturing cost as well as being able to automatically unclamp the tool with oil supply without using a shift cam. An unclamp cylinder device can be provided. This effect of the present invention can be used in a variety of applications in the field of machine tools without departing from the scope of the technical idea of the present invention.

Claims (2)

Shut-off valve 31 to be removed by passing it to the regulator 32 and the hydraulic converter 33 in the event of overpressure, A regulator 32 to keep the oil 11 at a constant pressure, A hydraulic converter 33 for replenishing the oil 11 in the cylinder when pneumatic pressure is applied from the regulator 32; The tool unclamp cylinder device of the automatic tool changer, characterized in that it comprises a check valve (34) installed between the hydraulic converter (33) and the cylinder to prevent backflow. The tool unclamping cylinder device of an automatic tool changer according to claim 1, wherein the regulator (32) maintains a pressure of 0.5 to 1 Kgf / cm 2.