KR101660184B1 - Slide-type automatic tool changer - Google Patents

Slide-type automatic tool changer Download PDF

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Publication number
KR101660184B1
KR101660184B1 KR1020150152091A KR20150152091A KR101660184B1 KR 101660184 B1 KR101660184 B1 KR 101660184B1 KR 1020150152091 A KR1020150152091 A KR 1020150152091A KR 20150152091 A KR20150152091 A KR 20150152091A KR 101660184 B1 KR101660184 B1 KR 101660184B1
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KR
South Korea
Prior art keywords
arm
tool
support
cam
cam guide
Prior art date
Application number
KR1020150152091A
Other languages
Korean (ko)
Inventor
박준형
Original Assignee
현대위아 주식회사
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Publication date
Application filed by 현대위아 주식회사 filed Critical 현대위아 주식회사
Priority to KR1020150152091A priority Critical patent/KR101660184B1/en
Application granted granted Critical
Publication of KR101660184B1 publication Critical patent/KR101660184B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/157Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/157Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
    • B23Q3/15713Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools a transfer device taking a single tool from a storage device and inserting it in a spindle

Abstract

The present invention relates to a slide type tool changer.
To this end, the present invention provides a tool holder comprising: a tool support provided on an upper portion of a main shaft; An arm support provided on a front surface of the tool support; An arm coupled to the arm support by a hinge at an upper end; A one-axis actuator having a tool port provided at a lower portion of the arm; A cam guide vertically provided on the tool support; A cam provided to rotate the arm by the cam guide; An arm cylinder fixed to an upper end of the arm and supported so as to stop on a stop piece extending to a lower portion of the tool support; And a shock absorber for preventing a return shock of the arm from being coupled to the arm support. The inclined guide piece is hinged to the lower end of the cam guide, and is hung by a spring.
Accordingly, the present invention allows the accurate tool port of the arm to be selected in the process of exchanging the tool, reduces the inclination angle of the cam guide to reduce the transfer distance while reducing the load, and so that the arm support is provided with a shock absorber So that the impact generated upon return can be minimized.

Description

[0001] Slide-type tool changer [0002]

The present invention relates to a slide type tool changer, and more particularly, it relates to a slide type tool changer in which a correct tool port is selected in a process of exchanging a tool provided in a tool port, and an inclination angle of the cam guide is reduced, And a shock absorber is provided on the arm support so as to minimize an impact generated upon return.

In general, a machining center consists of an automatic tool changer (ATC) and an NC device that automatically changes the body and a number of tools to match cutting conditions. Therefore, it is mainly used for automation of machining process of small quantity of various kinds of parts.

The machining centers are known in various forms for continuously machining the workpiece while exchanging the tool housed in the tool magazine according to the machining program.

As an example, the tool magazine is installed at the same height as the workbench at one end spaced apart from the workbench. When the tool is exchanged, the spindle head is moved to one end of the tool magazine.

These tool magazines contain various tools such as tabs, drills and reamers of different dimensions and shapes. When the tool change timing is reached, the tool is first returned to the empty position of the tool magazine, indexed to be replaced, The tool was automatically replaced by replacing the tool.

After the tool is replaced, the spindle head is transferred to the work table to perform the work. This requires a great deal of time from the current process to the next process, There is a problem that the efficiency of the coating decreases.

In order to solve the problems, an automatic tool changer of a machining center of Patent Registration No. 10-968575 (Jun. 30, 2010) has been proposed, and the proposed automatic tool changer has been proposed as an optimum work cross- The magazine which is open at both sides at the same time is moved in the horizontal direction so that the tool can be quickly replaced and it is possible to install the automatic apparatus and to prevent the workpiece from being interfered when the workpiece is put on or taken out of the jig, There is another problem that an interference phenomenon with a cam driven in the process occurs and it is partially broken.

This problem has also been caused by the conventional sunflower type automatic tool changer, and there is another problem that it is difficult to select an accurate tool port because of the cause of the impact upon return.

Patent Registration No. 10-968575 (June 30, 2010)

In the present invention, an accurate tool port of the arm is selected by the arm cylinder and the stop piece in the process of exchanging the tool provided in the tool port, and a shock absorber is provided on the arm support so that the impact generated upon return can be minimized In addition, the inclination angle of the cam guide is reduced so that the load can be reduced while reducing the travel distance.

The present invention relates to a tool support apparatus comprising a tool support provided on an upper portion of a main shaft, an arm support provided on a front surface of the tool support, an arm coupled to the arm support by a hinge at an upper end thereof, A cam provided perpendicularly to the tool support, a cam provided to rotate the arm by the cam guide, and a cam fixed to an upper end of the arm, the stop being supported by a stop piece extended to a lower portion of the tool support Wherein a shock absorber for preventing a return shock of the arm is coupled to the arm support, the inclined guide member is hinged to a lower end of the cam guide and is engaged with a spring, The lower ends of the arms are coupled to both sides of the arm, and a plurality of the tool ports are coupled to the rear surface.

According to another aspect of the present invention, there is provided a tool support apparatus including a tool support provided on a top of a main shaft, an arm support provided on a front surface of the tool support, an arm coupled to the arm support by a hinge at an upper end, A cam provided perpendicularly to the tool support, a cam provided to rotate the arm by the cam guide, and a stopper fixed to an upper end of the arm and extending to a lower portion of the tool support, A shock absorber for preventing a return shock of the arm is coupled to the arm support, a slant guide member is hinged to a lower end of the cam guide, and the hanger is engaged with the shock absorber, A cam guide panel is provided with a first inclined portion at a lower front of the cam, a guide portion facing the upper portion of the back surface of the first inclined portion, The features formed in the first front lower edge of the second inclined portion and the inclined portion parallel to the cam guide panel.
Further, the hinge portion is supported so that both ends of the hinge shaft are rotated by the rotation supporting portions, and the upper end portions of the arms are coupled to both side ends of the hinge shaft.

delete

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Further, the cam is fixed to one side end of the cam guide by the side of the arm, and the cam roller is coupled to the other end of the cam guide.

The present invention is characterized in that, in a state in which an actuator having a tool port is coupled to an arm support, a cam is pushed by a cam guide to pivot the arm so that the arm is rotated by the arm cylinder and the stop piece, It is possible to obtain an effect that the accurate tool port of the tool is selected.

In addition, by reducing the inclination angle of the cam guide, it is possible to reduce the load while reducing the transfer distance.

In addition, by providing the shock absorber on the arm support, it is possible to minimize the impact generated upon return.

This makes it possible to improve the precision while reducing the weight as a whole, and to prolong the life span.

1 is a perspective view of a slide-type tool changer according to the present invention;
2 is a side view of a slide type tool changer according to the present invention;
FIGS. 3A to 3G are side views showing an operating state of the slide type tool changer according to the present invention; FIGS.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a slide-type tool changer according to the present invention, FIG. 2 is a side view of a slide-type tool changer according to the present invention, Fig.

The machining center in which the slide type tool changer is used is basically provided with a drive motor, a main shaft, a bed, a saddle, a table, a column, an automatic tool changer (ATC), a strong control panel, The necessary tools are automatically arranged in correspondence with the new machining surface in order to perform various machining operations such as cutting (cutting), drilling, punching and polishing, all in one machine.

The automatic tool changer automatically exchanges the tool that is fixed on the main spindle with the tool to be used for the next machining. There are different types according to the size of the machine (turret type, storage type, etc.) There are dozens from dogs.

The turret type is a method in which several tools are installed directly on the tool rest, the tool rest is rotated, and the tool is moved linearly to move the necessary tools to the working position. The exchange time is short, but sufficient intervals And the number of stored tools is limited.

On the other hand, the magazine type has a tool storage magazine that stores several tools at a position away from the main axis, moves the tool built in the magazine to the replacement position, Exchange. This method is widely used in machining centers and machine tools that require many tools to machine various kinds of parts. The tool call method is a random method in which arbitrary tools can be exchanged by calling with a number, and a sequential type in which the main spindle is mounted in the order of arrangement.

The slide type tool changer according to the present invention improves accuracy by selecting an accurate tool port in the process of exchanging a tool provided in the tool port, while reducing the transfer distance of the tool port, The arm 30, the uniaxial actuator 40, the cam guide (not shown), and the cam guide 40. The tool support 10, the arm support 20, the arm 30, 50, a cam 60, an arm cylinder 70, a shock absorber 80, and an inclined guide piece 90.

The main spindle S includes a spindle motor and a pulley connected to the spindle S by a V belt so that the main spindle S can be rotated The hole of the main shaft is tapered so that the center of the spindle and the center of the tool are exactly aligned when the tool is clamped.

An arm support base 20 is coupled to the front surface of the tool support base 10 and an upper end of the arm 30 is coupled to the arm support base 20 by a hinge 31 to be rotatable.

The hinge portion 31 allows the arm 30 and the uniaxial actuator 40 provided at the lower end of the arm 30 to stably move. Both ends of the hinge shaft 311 are supported by the rotation support portion 312 And an upper end portion of the arm 30 is coupled to both side ends of the hinge shaft 311.

The uni-axial actuator 40 is provided with a plurality of tool ports 41 inwardly and can be stably supported at a lower portion of the arm 30. The uni-axial actuator 40 has arms And a plurality of tool ports 41 are coupled to a rear surface of the tool holder 40 so as to be maintained in a coupled state. At this time, it is preferable that the repeat position accuracy of the actuator is set to 50um or less and the weight can be minimized, thereby increasing the number of tools from 7 to 10, thereby facilitating the work .

The cam guide 50 is vertically provided on the tool support 10 and is provided so that the arm 30 can be pushed by the cam guide 50 by pushing the cam 60.

The cam guide 50 is formed with a first inclined portion 511 at the lower front of the cam guide panel 51 and a guide groove 512 at the lower end of the first inclined portion 511 And a second inclined portion 513 parallel to the first inclined portion 511 is formed at the lowermost end of the front surface of the cam guide panel 51.

This makes it possible to reduce the inclination angle of the cam guide while reducing the Z-axis (vertical) travel distance through the two-step cam method during tool change, and also to reduce the load by reducing the cam inclination angle.

The cam 60 is fixed to the side surface of the arm 30 on one side of the cam guide piece 61 by screw bolts or the like and is fixed to the other end of the cam guide piece 61 by a cam roller 62 So that friction can be prevented from being generated in the process of moving the cam guide panel 51.

The arm cylinder 70 is fixed to the upper end of the arm 30 and stops by the stop piece 71 extending to the lower portion of the tool support base 10 so that the accuracy of the vertical position is extremely raised during operation, . This allows the position of the tool port to be fixed via mechanical contact.

The shock absorber 80 is provided to reduce a return shock generated in the process of returning the arm 30 toward the arm support 20 after the tool is exchanged.

The inclined guide piece 90 is connected to the lower end of the cam guide 50 by a hinge 92 so that the cam guide piece 61 is smoothly and stably moved, The spring 93 is retained in a state of being drawn out toward the back surface or the other side surface of the spring 30.

3A to 3G are side views showing an operating state of the slide type tool changer according to the present invention.

3A, the cylinder rod drawn out from the arm cylinder 70 is stopped by the stop piece 71. In this process, when the workpiece is cut, The state in which the arm 30 and the uni-axial actuator 40 having the tool port 41 provided at the lower end of the arm 30 are held is maintained. At this time, the shock absorber 70 is maintained in a state in which the outer side surface of the arm 30 in an inclined state is pressed, i.e., abutted.

Next, when the tool is to be exchanged, the arm 30 is rotated counterclockwise around the hinge shaft 311 by its own weight by the length of the cylinder rod drawn out from the arm cylinder 70 in the reverse direction The cam roller 62 formed on the cam guide piece 61 is positioned directly below the guide groove 512 formed in the cam guider 50. That is, The state of being parallel to the front surface of the housing 50 is maintained.

3C) in which the cam guider 50 is moved downward (that is, the cam roller 62 is inserted into the guide groove 512 formed in the cam guider 50), and the cam roller 62 is guided in the reverse direction The tool is exchanged in the state of sunrise in the groove 512 (Fig. 3d).

Next, in a state where the tool is exchanged, the cam roller 62 is held in contact with the outside of the lower end of the inclined guide piece 90 as shown in FIG. 3D, and then the cam guider 50 is moved downward The cam roller 62 moves along the inclined surface of the inclined guide piece 90 as shown in FIG. 3E, and the arm 30, which is in parallel with the cam guider 50, do.

3F, the cam roller 62 presses the upper side of the inclined guide piece 90, and at the same time, the spring 93 is pulled, and the upper side rear face of the inclined guide piece 90 comes into contact with the cam- The cam roller 62 is moved from the inclined guide piece 90 to the front surface of the cam guide panel 50 after the first inclined portion 511 of the cam member 51 is brought into contact with the first inclined portion 511 and the return is completed (Fig. At this time, the impact force applied to the arm 30 is reduced by the shock absorber 80, and when the inclination of the inclined guide piece 90 is inclined to the inclined surface of the first inclined portion 511, that is, Impact forces can also be reduced.

10: tool support 20: arm support
30: arm 40: single axis actuator
41: tool port 50: cam guide
60: cam 70: arm cylinder
71: Stop piece 80: Shock absorber
90: inclined guide piece 92: hinge
93: spring

Claims (5)

A tool support provided on an upper portion of the main shaft;
An arm support provided on a front surface of the tool support;
An arm coupled to the arm support by a hinge at an upper end;
A one-axis actuator having a tool port provided at a lower portion of the arm;
A cam guide vertically provided on the tool support;
A cam provided to rotate the arm by the cam guide; And
And an arm cylinder fixed to an upper end of the arm and supported to stop on a stop piece extending to a lower portion of the tool support,
A shock absorber for preventing a return shock of the arm is coupled to the arm support,
The inclined guide piece is hingedly engaged with the lower end of the cam guide,
Wherein the unidirectional actuator is coupled to the lower ends of the arms on both sides of the front side, and a plurality of the tool ports are coupled to the rear side.
A tool support provided on an upper portion of the main shaft;
An arm support provided on a front surface of the tool support;
An arm coupled to the arm support by a hinge at an upper end;
A one-axis actuator having a tool port provided at a lower portion of the arm;
A cam guide vertically provided on the tool support;
A cam provided to rotate the arm by the cam guide; And
And an arm cylinder fixed to an upper end of the arm and supported to stop on a stop piece extending to a lower portion of the tool support,
A shock absorber for preventing a return shock of the arm is coupled to the arm support,
The inclined guide piece is hingedly engaged with the lower end of the cam guide,
The cam guide has a first inclined portion formed at a lower portion of a front surface of the cam guide panel, a guide portion formed at a lower end portion of the first inclined portion toward an upper portion of the rear surface, and a second inclined portion parallel to the first inclined portion, Is formed at the bottom end of the front side of the slide-type tool changer.
3. The method according to claim 1 or 2,
Wherein the hinge portion is supported so that both ends of the hinge shaft are pivotally supported by the pivot support portions, and the upper end portions of the arms are coupled to both side ends of the hinge shaft.
delete 3. The method according to claim 1 or 2,
Wherein the cam is fixed to one side end of the cam guide by facing the side of the arm, and a cam roller is coupled to the other end of the cam guide.
KR1020150152091A 2015-10-30 2015-10-30 Slide-type automatic tool changer KR101660184B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190115228A (en) 2018-04-02 2019-10-11 두산공작기계 주식회사 Machine tool
KR20200098094A (en) 2019-02-11 2020-08-20 두산공작기계 주식회사 Machine tool and method for operating the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04365531A (en) * 1991-06-12 1992-12-17 Sekiya Seisakusho:Kk Method for interchanging tool of machine tool and apparatus therefor
JP2006326768A (en) * 2005-05-27 2006-12-07 Shinx Ltd Automatic tool exchanging device of machine tool
JP2009233755A (en) * 2008-03-25 2009-10-15 Brother Ind Ltd Tool changer
KR100968575B1 (en) 2008-05-01 2010-07-08 김성철 automatic tool changer of machining center

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04365531A (en) * 1991-06-12 1992-12-17 Sekiya Seisakusho:Kk Method for interchanging tool of machine tool and apparatus therefor
JP2006326768A (en) * 2005-05-27 2006-12-07 Shinx Ltd Automatic tool exchanging device of machine tool
JP2009233755A (en) * 2008-03-25 2009-10-15 Brother Ind Ltd Tool changer
KR100968575B1 (en) 2008-05-01 2010-07-08 김성철 automatic tool changer of machining center

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190115228A (en) 2018-04-02 2019-10-11 두산공작기계 주식회사 Machine tool
KR20200098094A (en) 2019-02-11 2020-08-20 두산공작기계 주식회사 Machine tool and method for operating the same

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