KR20190113285A - Tool magazine of machine tool - Google Patents

Abstract

The present invention relates to a tool magazine device and, more specifically, to a tool magazine device capable of reducing tool exchange time and increasing productivity. According to the present invention, the tool magazine device includes: a frame unit including a bridge unit formed to be curved; a chain unit installed to move along the frame unit in the shape of a single closed loop; multiple tool port units accommodating a tool by being installed in the chain unit; a driving unit installed in the frame unit and generating power rotating the chain unit; a sprocket unit connected to the chain unit and installed in the frame unit to support the chain unit; and a guide unit formed in the bridge unit to support the chain unit with the sprocket unit. When the chain unit moves along the frame unit, the tool port unit moves by being curved to the outer side of the chain unit. When the chain unit moves along the guide unit, the tool port unit moves by being curved to the inner side of the chain unit.

Description

Tool magazine of machine tool

The present invention relates to a tool magazine device, and more particularly, to a tool magazine device capable of miniaturization, shortening tool change time, and improving productivity.

In general, a machine tool refers to a machine that uses various cutting or non-cutting methods to process a metal / non-metal workpiece into a desired shape and dimension using a suitable tool.

Various types of machine tools, including turning centers, vertical / horizontal machining centers, door machining centers, swiss turns, electric discharge machines, horizontal NC boring machines, CNC lathes, and multi-task machines, are widely used for various applications in various industrial sites. It is used.

Among the machine tools, the multi-tasking machine is a turning center equipped with a multi-functional automatic tool changer (ATC) and a tool magazine for various machining types such as turning, drilling, tapping, and milling. In the multi-task machine, the operator manually loads or replaces the tools required for machining and manually mounts the tools in the tool magazine.

BACKGROUND OF THE INVENTION In general, various types of machine tools in use are equipped with operation panels to which numerical control (NC) or computerized numerical control (CNC) technology is applied. This control panel has various function switches or buttons and a monitor.

In addition, the machine tool is a table for seating the workpiece as a workpiece and transporting it for processing the workpiece, a pallet for preparing the workpiece before processing, a tailstock for supporting a spindle or a workpiece that is rotated by combining the tool or the workpiece, and a dustproof hole. And the like.

In general, in a machine tool, a table, a tool bar, a main shaft, a tailstock, a dust shield, etc. are provided with a conveying unit for conveying along a feed shaft to perform various processing.

In addition, a machine tool generally uses a plurality of tools for various processing, and a tool magazine or a turret is used in the form of a tool storage space for storing a plurality of tools.

Such a machine tool uses a plurality of tools for various processing, and a tool magazine is used in the form of a tool storage space for storing a plurality of tools.

In addition, machine tools are generally equipped with an automatic pallet changer (APC) to minimize downtime. The Automatic Pallet Changer (APC) automatically changes pallets between the workpiece machining area and the workpiece installation area. Workpieces can be mounted on pallets.

In general, the machine tool is provided with an automatic tool changer (ATC) for retracting or retracting a specific tool from the tool magazine by the command of the numerical control unit to improve the productivity of the machine tool.

In general, the machining center (machining center) refers to a machine tool equipped with an automatic tool changer, and performs a wide range of machining that can be performed on lathes, milling, drilling, boring machines, etc. by replacing various types of tools. It is divided into a vertical machining center and a horizontal machining center in which the axis is mounted vertically.

In general, a tool magazine of a machine tool is provided with a gripper on one side of a chain, the chain is installed on a drive sprocket and an idle sprocket, and the chain moves as the drive sprocket is driven.

However, when mounting more than 60 tools in the tool magazine to perform a complex machining, there is a problem that the size of the tool magazine (1) becomes large.

As shown in FIG. 1, the tool magazine 1 of the conventional machine tool is a double magazine connecting two tool magazines 1 capable of accommodating 60 tools 2 in the tool port 3. As the configuration of the type increases, the layout of the equipment is increased and the sub changer 4 for transferring the tool 2 between the double tool magazines must be installed. As the time to transfer to (4) increases, there is a problem that the tool change time increases.

In addition, as shown in Fig. 2, even in the case of the tool magazine 1 of the conventional machine tool, the tool port 3 is bent in only one direction (outer or inner), so that in order to mount 60 or more tools, As the size increases and as the tool port 3 does not rotate, the feed magazine 5 must be provided to transfer to the sub changer 4 and the automatic tool changer. There was a problem that the tool change time increased.

Moreover, the tool magazine of the conventional machine tool cannot move at high speed due to the increase of the overall weight as the equipment is enlarged to store more than 60 tools, and the tool change time increases and the non-working time is necessarily passed through the additional configuration. There was a problem that the productivity decreases with the increase.

In addition, the tool magazine of the conventional machine tool has a problem that as the size increases, the space utilization is impaired, and as the moving space of the worker increases, inconvenience to the operator and a lot of time and cost are consumed for the maintenance of large equipment. .

Republic of Korea Patent Publication No. 10-2012-0083639 Republic of Korea Patent Publication No. 10-2013-0038083 Republic of Korea Patent Publication No. 10-2013-0030928

The present invention is to solve the above problems, the object of the present invention is that when the chain portion moves along the frame portion, the tool port portion is bent to the outside of the chain portion, when the chain portion moves along the guide portion, the tool port portion to the inside of the chain portion As it is formed to be rotated, it is possible to reduce the size and manufacturing cost by eliminating the configuration of the sub changer in the large tool magazine device equipped with more than 60 tools, and to improve productivity by reducing the non-working time by reducing the tool change time as much as possible. It is to provide a large tool magazine device of the machine tool that can increase the reliability and stability of the machine tool.

To achieve the object of the present invention, the tool magazine device according to the present invention comprises: a frame portion having a bridge portion formed to be bent; A chain part installed to be movable along the frame part in a closed loop shape; A plurality of tool port parts mounted on the chain part to receive a tool; A driving unit installed in the frame unit to generate power for rotating the chain unit; A sprocket portion coupled to the chain portion and installed on the frame portion to support the chain portion; And a guide part formed in the bridge part to support the chain part together with the sprocket part, wherein the tool port part is bent outwardly of the chain part when the chain part moves along the frame part, wherein the chain part is When moving along the guide portion, the tool port portion is characterized in that it is moved by bending the inside of the chain portion.

Further, in another preferred embodiment of the tool magazine device according to the present invention, the guide part of the tool magazine device, the first guide which is installed inside the bridge portion with respect to the central axis of the bridge portion; And a second guide installed outside the bridge part to face the first guide with respect to the center axis of the bridge part.

In addition, in another preferred embodiment of the tool magazine device according to the present invention, the frame portion of the tool magazine device, the first horizontal portion extending in the horizontal direction; A vertical portion having one side connected to one side of the first horizontal portion and extending vertically with respect to the first horizontal portion; And a second horizontal part having one side connected to the other side of the vertical part and extending in a horizontal direction so as to face each other with respect to the first horizontal part, wherein the bridge part is the first horizontal part and the vertical part. And, and the second horizontal portion may be formed round to the inside coupled to each other.

Further, in another preferred embodiment of the tool magazine device according to the present invention, the sprocket portion of the tool magazine device includes a first sprocket installed in the second horizontal portion; A second sprocket installed on the first horizontal portion; A third sprocket installed on an upper portion of the vertical portion; And a fourth sprocket disposed below the vertical portion so as to be spaced apart from the third sprocket.

Further, in another preferred embodiment of the tool magazine apparatus according to the present invention, the distance between the centers of adjacent tool port portions that couple to the chain portion of the tool magazine apparatus may be 1.3 times or more and 2.0 times or less of the diameter of the tool port portion. It is preferably formed to be.

Further, in another preferred embodiment of the tool magazine apparatus according to the present invention, the distance from the central axis of the bridge portion on the bridge portion of the tool magazine apparatus to the center of the tool port portion engaging the chain portion is coupled to the chain portion. It may be formed to be 1.2 times or more and 2.5 times or less of the distance between the center of the adjacent tool port portion.

Further, in another preferred embodiment of the tool magazine device according to the present invention, the angle at which the tool port part bends the inside of the chain part in the bridge portion of the tool magazine device is 10 degrees or more and 45 degrees or less with respect to the central axis of the bridge portion. It may be formed to be.

In addition, in another preferred embodiment of the tool magazine device according to the present invention, the tool magazine device may further include an auxiliary guide portion which is installed in the vertical portion to guide the movement of the chain portion.

In addition, in another preferred embodiment of the tool magazine device according to the present invention, the tool magazine device may further include a tilting part installed on the frame part to tilt the tool port part during tool change.

In addition, in another preferred embodiment of the tool magazine device according to the present invention, the tilting portion of the tool magazine device is a cylinder installed in the frame portion; And a rod unit configured to pressurize the tool port unit while ascending and descending by the cylinder.

In addition, in another preferred embodiment of the tool magazine device according to the present invention, the tension control unit is provided in the frame portion of the tool magazine device to adjust the tension of the chain portion; may further include a.

Further, in another preferred embodiment of the tool magazine apparatus according to the present invention, the vertical distance between the lower end of the first horizontal portion and the upper end of the second horizontal portion in the tool magazine apparatus is determined from the central axis of the bridge portion to the first guide. It may be formed smaller than the distance and the distance from the central axis of the bridge portion to the second guide.

The tool magazine device according to the present invention has a tool magazine device which is formed so that the tool port part is bent to the outside of the chain part when the chain part moves along the frame part, and the tool port part is bent to move inside the chain part when the chain part is moved along the guide part. Miniaturization and weight reduction, and at the same time the compactness of the machine tool can be maximized to maximize the space utilization.

In addition, the tool magazine device according to the present invention has the effect of improving the productivity of the machine tool according to the reduction of the non-work time by eliminating the configuration such as a sub changer, etc., according to the weight reduction and miniaturization.

Furthermore, the tool magazine device according to the present invention can be moved by bending the tool port mounted on the chain portion to both the outer side and the inner side when the chain portion moves, and thus, a large tool through stable driving and tool expandability during operation of the tool magazine apparatus. It has the effect of increasing the stability and reliability of magazine devices and reducing maintenance costs and time.

In addition, the tool magazine device according to the present invention can be equipped with a plurality of tools to facilitate the operator's convenience, to prevent the safety accidents caused by tool movement or mounting in advance, and to reduce the work cost have.

1 shows a conceptual diagram of a tool magazine of a conventional machine tool.
2 shows a perspective view of a tool magazine of another conventional machine tool.
3 is a perspective view of a tool magazine device according to an embodiment of the present invention.
4 is a front view of a tool magazine apparatus according to an embodiment of the present invention.
5 is a detailed view of a state in which the tool port portion of the tool magazine device according to an embodiment of the present invention is bent inward with respect to the chain portion.
6 is a conceptual view illustrating a state in which a tool port portion and a guide portion of a tool magazine device according to an exemplary embodiment of the present invention are formed in a bridge portion.
FIG. 7 is a cross-sectional view taken along the line II of FIG. 4.

Hereinafter, with reference to the drawings of the tool magazine device according to an embodiment of the present invention will be described in detail. The following embodiments are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art. Therefore, the present invention is not limited to the embodiments described below and may be embodied in other forms. In the drawings, the size and thickness of the device may be exaggerated for convenience. Like numbers refer to like elements throughout the specification.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout. In the drawings, the size and relative size of layers and regions may be exaggerated for clarity.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprise” and / or “comprising” refers to a component, step, operation and / or element that is present in one or more other components, steps, operations and / or elements. Or does not exclude additions.

Figure 3 shows a perspective view of a tool magazine device according to an embodiment of the present invention, Figure 4 shows a front view of the tool magazine device according to an embodiment of the present invention. 5 is a detailed view of a state in which the tool port portion of the tool magazine apparatus according to an embodiment of the present invention is bent inward with respect to the chain portion, and FIG. 6 is a tool of the tool magazine apparatus according to the embodiment of the present invention. It is a conceptual diagram for demonstrating the state in which a port part and a guide part are formed in a bridge part. FIG. 7 is a cross-sectional view taken along line II of FIG. 4.

Definitions of terms used below are as follows. "Horizontal direction" means the horizontal direction, i.e., the X-axis direction in FIGS. 3 to 6 in the same member, and "Vertical direction" means the longitudinal direction in the same member, ie Y in FIGS. It means the axial direction, "width direction" means the width direction in the same member orthogonal to the horizontal direction and the vertical direction. In addition, upward (upper) means an upward direction in the "vertical direction", that is, a direction toward the upper side of the Y axis in FIGS. 3 to 6, and downward (lower) means a downward direction in the "vertical direction", that is, FIGS. It means the direction from Y-axis downward at 6. In addition, the inner side means a side relatively close to the center of the same member, that is, the side closer to the central axis of the bridge portion in FIGS. 3 to 6, and the outer side means a side relatively far from the center of the same member, that is, the bridge portion in FIGS. 3 to 6. It means the far side from the central axis. In addition, "front" means the front of the frame part, that is, the direction in which the chain part is coupled as shown in the front view of FIG. 4, and "rear" means the back of the frame part, that is, the back of the front view in FIG. 4. It means the direction seen from the side that is not joined.

The tool magazine apparatus 100 of this invention is demonstrated with reference to FIGS. 3 to 4, the tool magazine device 100 according to an embodiment of the present invention is the frame portion 10, the chain portion 20, a plurality of tool port portion 30, the driving portion 40 , Sprocket portion 50, and guide portion 60.

Although not shown in the drawings, the tool magazine device 100 according to an embodiment of the present invention is a plurality of tools for supplying a tool to a spindle, the most suitable tool for machining by a machining program or a machining state of a machine tool or an operator. Store the tool.

The tool magazine device 100 performs a tool change operation between the automatic tool changer (ATC) and the spindle according to a machining program in response to a numerical control unit or a PLC command. Such a numerical control unit NC (numerical control, NC) or CNC (computerized numerical control), including a variety of numerical control program is embedded. That is, the numerical control unit includes a machining program of the machining unit, a moving program of a tool, and the like, and the corresponding program is automatically loaded and operated according to the driving of the numerical controller.

The numerical control unit communicates with the driving unit 40, the tilting unit 70, the tension adjusting unit 80, the spindle, and the programmable logic controller (PLC) by a predetermined protocol.

In addition, although not shown in the drawings, according to a preferred embodiment of the present invention, the numerical control unit includes a casting part, the casting part includes a screen display program and a data input program according to the screen display selection, screen display Displays the software switch on the display screen according to the output of the program, and recognizes the on / off of the software switch to issue the I / O command of the machine operation.

In addition, the present invention is not necessarily limited thereto, but the casting part is provided on a housing, a case, or one side of the machine tool, and includes a monitor capable of displaying various function switches or buttons and various information.

The frame part 10 forms the outer shape of the tool magazine apparatus 100, and is installed adjacent to the machining area of the machine tool. In addition, the frame portion 10 of the tool magazine device 100 according to the present invention includes one or more bridge portions 11 formed to be bent.

3 to 6, the frame portion 10 of the tool magazine device 100 according to an embodiment of the present invention is the first horizontal portion 12, the vertical portion 13, and the second horizontal portion (14).

The first horizontal portion 12 extends in the horizontal direction (the X-axis direction of FIGS. 3 to 6).

The vertical portion 13 extends vertically downward to be perpendicular to the first horizontal portion 12. In addition, one side of the vertical portion 13 is formed to be connected to one side of the first horizontal portion 12.

The second horizontal portion 14 extends in the horizontal direction so as to face and parallel to the first horizontal portion 12. At the same time, the other side of the second horizontal portion 14 is formed to be connected to the other side of the vertical portion 13.

3 to 4 illustrate that the first horizontal portion 12 is located vertically, but is not limited thereto, and the first horizontal portion and the second horizontal portion are positioned according to the position where the tool magazine device 100 is installed. Can be reversed.

The bridge part 11 is formed to have a predetermined curvature with respect to the central axis C of the bridge part inside the first horizontal part 12, the vertical part 13, and the second horizontal part 14 are coupled to each other. do.

Although not necessarily limited thereto, the bridge portion 11, the first horizontal portion 12, the vertical portion 13, and the second horizontal portion 14 are integrally formed in order to reduce manufacturing cost and time and maintain durability. It can be formed as.

As such, the frame portion 10 of the tool magazine device 10 according to an embodiment of the present invention is formed in a "-" shape as a whole. In addition, one stage may be formed in a "c" shape and stacked vertically.

That is, although one bridge part 11 is illustrated in FIGS. 3 to 6, the present invention is not limited thereto. According to the size and number of tools received in the tool magazine device 100, the third and fourth horizontal parts may be continuously stacked in parallel in multiple stages in the vertical direction (Y). (11) is formed.

Here, the term "end" means two horizontal parts facing each other and formed in parallel, and one vertical part having both ends connected to one side or the other side of the horizontal part. Therefore, many tool port units 30 can be mounted on the chain 20 while minimizing the installation space, thereby miniaturizing and reducing the weight of the large tool magazine device and reducing the manufacturing cost.

The chain portion 20 is installed to be movable along the frame portion 10 in the form of a closed loop in front of the frame portion 10. That is, the chain part 20 is installed in the front of the frame part 10 by the sprocket part 50 and the guide part 60 so as to rotate rotationally, and to operate the motor part 41 of the drive part 40. Rotate clockwise or counterclockwise.

A plurality of tool port portions 30 are mounted to the chain portion 20 to receive the tool 2. That is, each tool port portion 30 is connected to two chains of the chain portion 20 that are adjacently connected. The tool port part 30 is mounted, and each tool port part 30 accommodates one tool.

The driving part 40 is installed in the frame part 10 to generate power for rotating the chain part 20.

According to an embodiment of the present invention, the driving unit 40 is not necessarily limited thereto, and the driving unit 40 is installed between the motor unit 41 and the motor unit 41 and the driving sprocket driven by the numerical control unit or the control of the PLC. And a deceleration part 42 for decelerating the rotation of the head 41.

The motor unit 41 may be formed of a servo motor, and is driven by the numerical control unit or the PLC. The rotational force of the motor unit 41 is reduced by the reduction unit 42 to rotate the first sprocket 51 which performs the driving sprocket function at a desired rotational speed and prevent the chain unit 20 from being damaged. . As such, as the motor part 41 is installed in the first sprocket 51, the deformation caused by the weight of the motor part 41 is minimized, vibration and noise are reduced, and the rotational force of the motor part 41 is reduced by the first sprocket ( 51) can be delivered stably.

Sprocket portion 50 is coupled to the chain portion 20 is installed in the frame portion 10 to support the chain portion 20. Specifically, the sprocket portion 50 is coupled to the bush of the chain portion 20 and the chain portion 20 and the chain portion 20 on the frame portion 10 so as to rotate rotational movement of the chain portion 20 in accordance with the driving of the drive unit 40. It is properly installed on the same side.

3 to 4, the sprocket portion 50 according to an embodiment of the present invention is the first sprocket 51, the second sprocket 52, the third sprocket 53, and the fourth sprocket ( 54).

The first sprocket 51 is provided on the second horizontal portion 14. Specifically, the first sprocket 51 is installed to be connected to one side of the chain portion 20 at the tip of the second horizontal portion 14 to stably support the chain portion 20.

In addition, when the motor part 41 of the driving part 40 is fastened to the first sprocket 51 provided in the second horizontal part 14 which is installed in the lower portion in the vertical direction, the motor part 41 is operated. By minimizing vibration and noise, the processing precision can be improved, and the maintenance cost can be reduced by minimizing deformation or damage caused by its own weight.

The second sprocket 52 is mounted on the first horizontal portion 14. Specifically, the second sprocket 52 is installed to be connected to the other side of the chain portion 20 at the tip of the first horizontal portion 12 to stably support the chain portion 20 while maintaining the tension of the chain portion 20. do.

The third sprocket 53 is installed above the vertical portion 13. Specifically, the third sprocket 53 is installed at the upper end of the vertical portion 13 so that the chain portion 20 is provided with the first and second sprockets 51 and 52 and the guide portion 60 to be described later. Support bent around the center.

The fourth sprocket 54 is provided with a vertical portion 13 at a lower portion so as to be spaced apart from the third sprocket 53 in the vertical direction. Specifically, the fourth sprocket 54 is installed at the lower end of the vertical portion 13 so that the chain portion 20 together with the first, second and third sprockets 51, 52 and 53 and the guide portion 60 to be described later. It is bent around the bridge portion 11 and stably supported to allow the chain portion 20 to rotate rotationally along the frame portion 10 while preventing the chain portion 20 from being separated from the frame portion 10. .

The guide portion 60 is formed in the bridge portion to support the chain portion 20 together with the sprocket portion 50. That is, the guide part 60 supports the chain part 20 together with the first, second, third, and fourth sprockets 51, 52, and 53 54 so that the chain part 20 has a "-" shaped frame part ( The chain part 20 is fixedly supported to be stably rotated without being separated along 10).

That is, as illustrated in FIGS. 3 to 6, the guide part 60 is formed as a pair of the first guide 61 and the second guide 62.

The first guide 61 is installed inside the bridge portion 11 based on the central axis C of the bridge portion.

The second guide 62 is installed outside the bridge portion 11 so as to face the first guide 61 based on the central axis C of the bridge portion.

Specifically, the central axis of the bridge portion so that the distance R1 from the central axis C of the bridge portion to the first guide 61 is shorter than the distance R2 from the central axis C of the bridge portion to the second guide 62. The tool port part 30 formed in a concentric shape on the basis of (C) so as to surround the chain part 20 in the bridge part 11 and mounted to the chain part 20 is located inside the chain part 20. The chain part 20 is firmly supported to move stably while bending.

As such, according to the tool magazine device 100 according to the present invention, the chain part 20 is framed according to the structure and position and structure of the sprocket part 50 and the guide part 60 according to the structure of the frame part 10. The tool port part 30 is moved only when the tool port part 30 moves to the outside of the chain part 20 when moving along the part 10, and the chain part 20 moves along the guide part 60. As the inside of the chain portion 20 is bent and moved, the tool magazine device can be miniaturized and lightened, and at the same time, the machine tool can be made compact to maximize space utilization.

In addition, as shown in Figures 3 to 6, the tool magazine device 100 according to an embodiment of the present invention is installed in the vertical portion 13, the auxiliary guide portion 70 for guiding the movement of the chain portion 20 ) May be further included. In detail, the auxiliary guide part 70 includes an upper auxiliary guide 71 and a lower auxiliary guide 72.

The upper auxiliary guide 71 is installed at the outer edge of the upper portion of the vertical portion 13 so as to be adjacent to the third sprocket 53 to stably support the chain portion 20, and to vibrate when the chain portion 20 moves. Reduces noise and prevents the chain portion 20 from sagging.

The lower auxiliary guide 72 is installed at the outer edge of the lower part of the vertical part 13 so as to be adjacent to the fourth sprocket 54 while facing the upper auxiliary guide 71 while being spaced in the vertical direction, thereby further extending the chain part 20. It stably supports, further reduces vibration or noise during movement of the chain portion 20, and completely prevents the chain portion 20 from sagging.

Therefore, stable driving and tool expandability during operation of the tool magazine device can increase the stability and reliability of the large tool magazine device, and reduce maintenance costs and time.

As shown in Figure 6, the distance (P, pitch) between the center (B) of the adjacent tool port portion engaging the chain portion 20 of the tool magazine device 100 according to an embodiment of the present invention is It is preferable to form so that it may become 1.3 times or more and 2.0 times or less of the diameter D of a pot part.

Thus, when the pitch P which is the distance P between the center B of the tool port part is less than 1.3 times the diameter D of the tool port part, the tool port part 30 is the chain part 20 centering on the chain part 20. There is a problem that can be reduced in size by bending only in one direction of the inner side or the outer side of the side.

In addition, when the pitch, which is the distance P between the center B of the tool port part, exceeds 2.0 times the diameter D of the tool port part, as the size of the tool port part and the chain part increases, miniaturization and weight reduction can be achieved. There is a problem in that the tool change time cannot be shortened.

As shown in FIG. 6, on the bridge portion 11 of the tool magazine apparatus 100 according to the preferred embodiment of the present invention, the center of the tool port portion coupled to the chain portion 20 from the central axis C of the bridge portion ( The distance L to B) is preferably formed to be 1.2 times or more and 2.5 times or less of the distance P between the centers B of adjacent tool port portions 30 that are coupled to the chain portion 20. Do.

As such, the distance L from the central axis C of the bridge portion to the center B of the tool port portion that is coupled to the chain portion 20 is the center of the adjacent tool port portion 30 that is coupled to the chain portion 20. When the distance P is less than 1.2 times the distance P, the tool port 30 is bent only in one of the inner and outer directions of the chain portion 20, so that the guide portion 60 of the bridge portion 11 is formed. Therefore, when the chain part 20 moves along, the tool port part does not bend inwardly of the chain part, thereby miniaturizing and reducing the weight, and thus, the tool port part has to be enlarged like a conventional tool magazine device.

Further, the distance L from the central axis C of the bridge portion to the center B of the tool port portion that is coupled to the chain portion 20 is the center of the adjacent tool port portion 30 that is coupled to the chain portion 20. In the case where the distance P between (B) exceeds 2.5 times, the size of the tool port portion and the chain portion increases, so that the size and weight of the tool can not be reduced and the tool change time cannot be shortened.

As shown in Figure 6, in the bridge portion 11 of the tool magazine device 100 according to an embodiment of the present invention, the angle (θ, angle of bending the tool port portion 30 to the inside of the chain portion 20) Angle) is preferably formed to be 10 degrees or more and 45 degrees or less with respect to the central axis C of the bridge portion.

As described above, when the bending angle, which is the angle θ of bending of the tool port 30 in the bridge portion 11, is less than 10 degrees based on the central axis C of the bridge portion, the chain portion 20 Since the tool port part is bent only in one direction of the inner side or the outer side of the chain part, the size of the tool port cannot be reduced.

In addition, when the bending angle which is the angle (theta) which the tool port part 30 bends inward of the chain part 20 in the bridge part 11 exceeds 45 degree | times with respect to the center axis C of the bridge part, As the size of the port portion and the chain portion increases, there is a problem in that the size and weight of the port portion and the chain portion cannot be reduced, and the tool change time cannot be shortened.

In addition, in the bridge portion 11 of the tool magazine device 100, the angle (θ, angle of bending) of the tool port portion 30 to the inside of the chain portion 20 is 15 based on the central axis C of the bridge portion. It is most preferable to form so that it may become more than 30 degrees or less. When the bending angle θ becomes 15 degrees or more and 30 degrees or less, the tool port portion is bent to the outside of the chain portion when the chain portion moves along the frame portion while installing the most tools. When the chain portion moves along the guide portion, the tool port portion It is formed to be bent and moved inside the chain portion, and at the same time, it can be configured most compactly. As a result, the tool change time can be reduced to maximize productivity.

As described above, in order to construct the large tool magazine apparatus 100 according to the present invention, the tool port portion is bent to the outside of the chain portion when the chain portion moves, and the tool port portion is moved inside the chain portion when the chain portion moves along the guide portion formed in the bridge portion. The most important factor for this is the distance P between the center B of the adjacent tool port part engaging the chain part 20, the pitch and the chain part 20 from the central axis C of the bridge part. Distance (L) to the center (B) of the tool port portion coupled to.

It is preferable to determine the distance (P, pitch) between the centers of adjacent tool port parts which couple to a chain part by following formula (1).

Equation 1: 2 × π × (L + (D / 2)) × (θ / 360) = P

P: distance between the centers of adjacent tool port portions engaging the chain portion

π: circumference

L: Distance from the central axis of the bridge section to the center of the tool port section engaging the chain section

D: diameter of tool port

θ: angle at which the tool port part bends inside the chain part in the bridge part

In addition, as shown in Figure 4, in the tool magazine device 100 according to an embodiment of the present invention, the vertical distance (H) between the first horizontal portion 12 and the second horizontal portion 14 is a bridge portion It is formed smaller than the distance (R1) from the central axis (C) of (11) to the first guide 61 and the distance (R2) from the central axis (C) of the bridge portion 11 to the second guide (62). do. That is, in FIG. 4, the separation distance H in the vertical direction (Y-axis direction) between the lower end of the first horizontal part 12 and the upper end of the second horizontal part 14 is defined by the second sprocket 52. 1 means the shortest distance H in the vertical direction (Y-axis direction) between the lower end of the horizontal part 12 and the second horizontal part 14 on which the first sprocket 51 is installed. As a result, the tool magazine device can be compactly formed in a U-shape while the overall shape of the tool magazine device is bent in both directions.

3 to 4 and 7, the tool magazine device 100 according to an embodiment of the present invention further includes a tilting part 80.

The tilting part 80 is installed in the frame part 10 so that the tool can be quickly changed during tool change to exchange the tool mounted on the spindle and the tool mounted on the standby tool port by the automatic tool changer or the spindle. To tilt the tool port 30.

As shown in FIG. 7, the tilting unit 80 of the tool magazine apparatus 100 according to the exemplary embodiment of the present invention is lifted by the cylinder 81 and the cylinder 81 installed at the rear of the frame unit 10. It includes a rod 82 for pressing the toll port 30 while descending to tilt the tool port 30 at a desired angle for tool change.

As shown in FIG. 7, when the cylinder 81 of the tilting unit 80 installed at the rear of the frame unit 10 is operated at the time of tool change by a control command according to the numerical control unit or the machining program of the PLC, the rod 82 is operated. Will descend. Then, when the rod 82 presses one side of the tool port part 30, the tool port part 30 is tilted downward by 90 degrees with respect to the pivot axis so that the tool mounted on the tool port part 80 is parallel to the ground. Will be. Accordingly, productivity can be improved while miniaturizing and reducing the weight by accommodating a large number of tools in the tool magazine device while rapidly changing tools.

As shown in Figure 3 to 4, the tool magazine device 100 according to an embodiment of the present invention may further include a tension adjusting unit (90).

The tension adjusting unit 90 is installed in the frame portion 10 or the sprocket portion 50 to adjust the tension of the chain portion 20. More preferably, the tension adjusting part 90 is installed in the second sprocket portion 52 so that the fastening portion 20 and the fastening portion 20 when the tool of the high speed rotation or the high load of the tool port portion 30 is mounted. The tool port portion 30 mounted on the) may sag.

When the chain part 20 sags as described above, the chain part 20 is framed by adjusting the coupling tension of the chain part 20 coupled to the sprocket part 50 and the guide part 60 through the tension adjusting part 90. In close contact with the part 10 to prevent vibration and noise, and to prevent damage to the tool.

Although not necessarily limited thereto, preferably, two or more tension adjusting units 90 are installed in the frame unit 10 or the sprocket unit 50 so that the number of the corresponding tool port units 30 and the tool port unit 30 may be used. In accordance with the weight of the tool to be mounted, the rotational speed of the chain portion 20, etc., an appropriate torque tension can be applied to the chain portion 20. Although not shown in the drawings, the tension control unit 90 is installed in the second, third, fourth, sprockets 52, 53, 54 to maintain the tension of the closed loop of the chain portion 20 quickly and stably. Can be.

Although not shown in the drawings, the tool magazine device 100 according to an embodiment of the present invention may further include a position adjuster.

The position adjusting part is installed on the frame part 10 to fix the chain part 20 so that the chain part 20 does not move when the tool is changed in the tilting part 80 where the tool is exchanged.

That is, the position adjusting unit increases the accuracy of the tool position at the time of tool change so that the tool port part 30 located at the tilting unit 80 where the tool change is performed is fixed and does not move, and through the automatic notification change device or the spindle. The tool port part 30 is prevented from moving or shaking at the time of tool change, and thus is installed on the frame part 10 adjacent to the tilting part 80 to achieve accurate tool change and to improve the reliability of the machine tool.

In this way, the precise positioning of the tool port part is possible by the position adjusting part, thereby maximizing machining precision and stability.

In addition, although not shown in the drawings, a plurality of such position adjusting units may be installed in the frame unit. Accordingly, the chain part can be more completely prevented during tool change, thereby preventing damage to the tool or the tool magazine device, thereby increasing the life of the machine tool.

In addition, although not shown in the drawings, the tool magazine device 100 according to an embodiment of the present invention may further include a tool check unit.

The tool check unit checks the existence of the tool in the standby tool port unit which is installed in the frame unit adjacent to the tilting unit where the tool change is made and is to be replaced. It can prevent the automatic tool changer or the spindle and the tool port part from colliding, and improve the safety of the operator.

3 to 6 will be described the operation principle of the tool magazine device 100 according to an embodiment of the present invention.

3 to 6, the motor 41 of the drive unit 40 mounted on the first sprocket 51 is driven by the numerical control unit or the control of the PLC. Thereafter, the first sprocket 51 is rotated by the increased rotational force while being decelerated through the reduction unit 42. By the rotation of the first sprocket 51, the chain portion 20 moves in a clockwise direction (rotating and rotating in M1-M2-M3-M4-M5) in FIGS. At the same time, the second, third, fourth, and sprockets 52, 53, and 54 installed on the frame portion 10 while being connected to the chain portion 20 rotate to stably support the chain portion 20, while the chain portion 20 is supported. Rotates along the M2, M3, M4 and M5 directions. At this time, when the chain portion 20 moves in the directions M1, M2, M3, M4, and M5, the tool port portion 30 mounted on the chain portion 20 is bent and moved outward of the chain portion 20.

after. When the bridge portion 11, which is a section in which the chain portion 20 transitions from M4 to M5 direction, is formed and moves along the guide portion 60, the tool port portion 30 coupled to the chain portion 20 is the chain portion ( It is bent to the inside of 20) to move.

Therefore, the tool magazine device can be made smaller and lighter, and at the same time, the machine tool can be made compact, maximizing space utilization, reducing tool change time as much as possible, improving the productivity of the machine tool by reducing the non-working time, and It increases the reliability and reliability of the tool magazine device and reduces maintenance costs and time.

In the detailed description of the present invention described above with reference to the preferred embodiment of the present invention, those skilled in the art or those skilled in the art having ordinary knowledge of the present invention described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the spirit and scope of the art. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

1: conventional tool magazine, 2: tool,
3: tool port, 4: sub changer,
5: transfer unit, 100: tool magazine device,
10: frame portion, 11: bridge portion,
12: first horizontal portion, 13: vertical portion,
14, the second horizontal portion, 20: the chain portion,
30: tool port portion, 40: drive portion,
41: motor portion, 42: deceleration portion,
50: sprocket portion,
51, 52, 53, 54: 1st, 2, 3, 4 sprocket,
60: guide portion, 61: first guide,
62: second guide, 70: auxiliary guide portion,
71: upper auxiliary guide, 72: lower auxiliary guide,
80: tilting portion, 81: cylinder,
82 is a rod, 90 is a tension control unit.

Claims (12)

A frame portion having a bridge portion formed to be bent;
A chain part installed to be movable along the frame part in a closed loop shape;
A plurality of tool port parts mounted on the chain part to receive a tool;
A driving unit installed in the frame unit to generate power for rotating the chain unit;
A sprocket portion coupled to the chain portion and installed on the frame portion to support the chain portion; And
And a guide part formed on the bridge part to support the chain part together with the sprocket part.
When the chain portion moves along the frame portion, the tool port portion is moved outwardly by the chain portion,
The tool magazine device characterized in that the tool port portion is bent to the inside of the chain portion when the chain portion moves along the guide portion.
The method of claim 1,
The guide unit,
A first guide installed inside the bridge unit based on a center axis of the bridge unit; And
And a second guide installed outside the bridge portion to face the first guide with respect to the center axis of the bridge portion.
The method of claim 2,
The frame portion,
A first horizontal portion extending in a horizontal direction;
A vertical portion having one side connected to one side of the first horizontal portion and extending vertically with respect to the first horizontal portion; And
And a second horizontal portion having one side connected to the other side of the vertical portion and extending in a horizontal direction so as to be parallel to each other with respect to the first horizontal portion.
The bridge unit is a tool magazine device, characterized in that the first horizontal portion, the vertical portion, and the second horizontal portion is formed rounded inside the coupling.
The method of claim 3, wherein
The sprocket portion,
A first sprocket installed on the second horizontal portion;
A second sprocket installed on the first horizontal portion;
A third sprocket installed on an upper portion of the vertical portion; And
And a fourth sprocket disposed below the vertical portion so as to be spaced apart from the third sprocket.
The method of claim 2,
And a distance between the centers of adjacent tool port portions coupled to the chain portion is 1.3 times to 2.0 times less than the diameter of the tool port portion.
The method of claim 2,
The distance from the central axis of the bridge portion to the center of the tool port portion coupled to the chain portion on the bridge portion is 1.2 times to 2.5 times less than the distance between the centers of the adjacent tool port portions coupled to the chain portion. Tool magazine device, characterized in that formed.
The method of claim 2,
Tool angle of the tool port portion in the bridge portion in the chain portion is characterized in that the tool magazine device, characterized in that formed to be 10 degrees or more to 45 degrees or less with respect to the central axis of the bridge portion.
The method according to any one of claims 3 to 7,
And an auxiliary guide part installed at the vertical part to guide the movement of the chain part.
The method according to any one of claims 3 to 7,
And a tilting part installed at the frame part to tilt the tool port part at the time of tool change.
The method of claim 9,
The tilting unit,
A cylinder installed in the frame portion; And
And a rod part configured to pressurize the tool port part while being lifted by the cylinder.
The method according to any one of claims 3 to 7,
The tool magazine device further comprises a; tension control unit installed in the frame portion for adjusting the tension of the chain.
The method of claim 4, wherein
The vertical distance between the lower end of the first horizontal portion and the upper end of the second horizontal portion is smaller than the distance from the central axis of the bridge portion to the first guide and the distance from the central axis of the bridge portion to the second guide. The tool magazine device characterized by the above-mentioned.

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