KR101724056B1 - Automatic tool changer having single driven dual tool magazine type - Google Patents

Abstract

The present invention relates to an automatic tool changer with a single-driving dual magazine. The automatic tool changer comprises: a body supported on one side of the main body of a machine tool; a driving unit vertically installed on an upper portion of the body to generate a driving force; a deceleration switching unit provided inside the body to decelerate power input from the driving unit and change a transmission direction of the power to a horizontal direction; a magazine shaft horizontally positioned in the body and coupled to the deceleration switching unit to be rotated; and both magazine assemblies coupled to both ends of the magazine shaft to allow tools to be mounted thereon. Accordingly, the automatic tool changer can drive both magazines with one drive source, thereby simplifying its overall configuration to construct compact equipment and reducing manufacturing costs.

Description

[0001] The present invention relates to an automatic tool changer having a single-acting dual magazine,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic tool changer provided in a machine tool such as a machining center and capable of automatically exchanging tools.

In general, machine tools are widely used for a wide variety of applications, including turning centers, machining centers, door machining centers, Swiss turn, electric discharge machines, and horizontal NC boring machines.

In particular, a machining center is a machine tool for automatically machining drilling, boring, milling, cutting, reaming, tapping, etc., in which various tools are arranged in circular magazines, To be automatically machined.

Since these machining centers have to be machined by selectively exchanging various kinds of tools for various kinds of automated machining, when the tool mounted on the main spindle completes the machining for one machining, An automatic tool changer (ATC) is indispensable to replace the tool housed in the tool magazine.

The machining center is classified into a vertical machining center or a horizontal machining center depending on the position of the main axis. In the case of a horizontal machining center, the automatic tool changer is arranged in a vertical direction, that is, To be exchanged.

On the other hand, the horizontal machining centers are mostly composed of only one spindle, but there are also machining centers having two spindles for faster and various machining. In the case of a machining center having two spindles, the automatic tool changer is generally constructed separately for each spindle.

However, when the automatic tool changer is configured to correspond to the two main axes, the drive sources must also be configured, respectively, so that the overall configuration is complicated and the manufacturing cost is increased.

The contents of the background art described above are technical information that the inventor of the present application holds for the derivation of the present invention or acquired in the derivation process of the present invention and is a known technology disclosed to the general public prior to the filing of the present invention I can not.

Korean Patent No. 10-0982191 Korean Patent No. 10-0995956

Disclosure of Invention Technical Problem [8] The present invention has been conceived to solve the problems described above. It is an object of the present invention to provide a dual magazine capable of simplifying the entire structure by making it possible to drive both magazines with one drive source, And to provide a single-acting automatic tool changer.

In order to achieve the above object, a dual magazine single-acting automatic tool changer according to the present invention is connected to and supported by a lower end portion of a vertically arranged lifting cylinder so that the lifting cylinder can move up and down, A cylinder attaching portion which is fixed to the main body and which is supported by the machine tool main body and which is located at an upper center portion and to which the up and down cylinder is engaged; a drive attaching portion which is elongated vertically up and down by the cylinder attaching portion; A body formed of a cylindrical portion to be formed; A dual magazine assembly in which magazine assemblies on which the tools are mounted are formed on both sides of the cylindrical portion and are engaged with the cylindrical portion; A magazine shaft horizontally positioned within the cylindrical portion and engaged with the dual magazine assembly as a rotation axis; A driving unit mounted vertically on an upper portion of the driving unit, a driving shaft disposed in a vertical direction inside the driving unit, and a coupling unit connecting the shaft of the motor and the driving shaft. And a follower plate mounted on the cylindrical portion and rotatably mounted on the drive shaft, a follower plate rotatably mounted on the magazine shaft, and a follower plate provided on one surface of the follower plate at a predetermined interval in the circumferential direction, And a cam follower bearing coupled to the cam follower and receiving power.

Here, the cylindrical portion is formed in such a structure that both ends of the magazine shaft are exposed, the side caps are respectively coupled to the opened portion, and the magazine shaft is rotatably supported inside the opened portion It is preferable that the bearing structures are respectively installed.

Preferably, at least one helical cam groove is formed in the drive cam.

Preferably, the drive mounting portion has a shaft hole formed at an upper portion thereof so as to allow the drive shaft to penetrate therethrough and rotatably, and a lower cap rotatably supporting a lower portion of the drive shaft is formed at a lower portion thereof.

Preferably, the magazine assembly includes a magazine plate assembled to both ends of the magazine shaft, and a tool holder mounted around the magazine plate and mounted with the tool.

The above and other objects and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: In addition to the principal task solutions as described above, various task solutions according to the present invention will be further illustrated and described.

The dual magazine single-acting automatic tool changer according to the present invention is constructed so as to drive both drive magazines by driving one drive source, i.e., a motor, so that the overall configuration is simplified, a more compact apparatus configuration is possible, Thereby providing a reduction effect.

In addition, since the driving source is directly connected to the upper side of the body, and the magazine including the driving source and the body can be moved up and down by using the lifting cylinder, interference with other structures is minimized, And the like can be made easier.

1 is a front view showing an automatic tool changer having a single-acting dual magazine according to an embodiment of the present invention.
2 is a plan view showing an automatic tool changer having a single-acting dual magazine according to an embodiment of the present invention.
3 is a side view of an automatic tool changer having a single-acting dual magazine according to an embodiment of the present invention.
4 is a partial cross-sectional view in the direction of the line AA in Fig.
Fig. 5 is a cross-sectional view in the BB line direction of Fig. 1. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. 4 is a side view of the automatic tool changer according to the embodiment of the present invention. 1 in the AA line direction, and Fig. 5 is a sectional view in the BB line direction in Fig.

Referring to these drawings, a dual magazine single-action automatic tool changer according to an embodiment of the present invention includes a body 10 supported by a machine tool main body (not shown) A deceleration switching unit 50 disposed inside the body 10 for reducing the power input from the driving unit 30 and changing the power transmission direction in the horizontal direction, A magazine shaft 70 horizontally positioned in the body 10 and coupled to the decelerating switching unit 50 for rotation and a plurality of magazine assemblies 70 mounted on both ends of the magazine shaft 70, (90, 91).

Referring to FIG. 3, a dual magazine single-acting automatic tool changer according to an embodiment of the present invention configured as described above is constructed such that an automatic tool changer including the body 10 is vertically movable from the machine tool main body do.

To this end, the body 10 is connected to and supported by a lower end of a vertically arranged lifting cylinder 20, and the lifting cylinder 20 is fixed to the machine tool body via a fixed block 25. [ When the lifting cylinder 20 is operated by hydraulic or pneumatic pressure through such a structure, the entire automatic tool changer including the body 10 can be moved vertically, and after the tool changer moves to a height for tool changer, It can be raised or lowered to the original position.

The main components of the automatic tool changer for a machine tool according to an embodiment of the present invention will now be described in detail.

First, the body 10 is installed in a structure supported by the lifting cylinder 20, and various components constituting the automatic tool changer are installed.

The body 10 includes a main body 11 and side caps 12 and 13 which are assembled on both sides of the main body 11.

The main body 11 includes a cylinder engaging portion 15 positioned at an upper center portion and coupled to the lifting cylinder 20 and a drive portion 30 configured to be vertically extended vertically next to the cylinder engaging portion 15, And a cylindrical portion 17 in which a decelerating switching portion 50 and a magazine shaft 70 are provided at a lower portion of the cylinder engaging portion 15.

The cylinder coupling portion 15 may be formed in a block structure so that the rod of the lifting cylinder 20 can be stably coupled.

A shaft hole 16a is formed in the upper portion of the driving mounting portion 16 so that the driving shaft 39 passes through and is rotatably supported by the driving shaft 39. A lower portion of the driving shaft 39 is rotatably supported And the lower cap 19 is coupled to the lower cap 19.

The cylindrical portion 17 is formed such that both ends of the magazine shaft 70 are exposed, and the side caps 12 and 13 are assembled to the opened portion. Bearing structures 75 and 76 are respectively installed on the inside of both opened portions of the cylindrical portion 17 so as to rotatably support the magazine shaft 70 (see FIG. 5).

The side caps 12 and 13 are formed at the center thereof with holes through which the magazine shaft 70 passes and are coupled to both sides of the cylindrical portion 17 of the main body 11 as described above.

4 and the like, the driving unit 30 includes a servomotor 31 vertically positioned on the upper portion of the driving mount 16 of the body 10, A driving shaft 39 extending vertically inwardly of the driving mounting portion 16 and a driving shaft 39 extending from the inside of the coupling box 35 to the side of the servo motor 31 And a coupling 37 connecting the shaft and the drive shaft 39.

Both ends of the drive shaft 39 are rotatably supported on the body 10 through bearings. In particular, a drive cam 51 of the reduction switching section 50, which will be described in detail below, is provided at the center.

4 and 5, the deceleration switching unit 50 includes a driving cam 51 mounted on the driving shaft 39 and rotating as described above, and a driving cam 51 rotating in the middle of the magazine shaft 70 And a cam follower bearing 53 (hereinafter, referred to as " cam follower bearing ") 53 which is installed at a predetermined interval in the circumferential direction on the one surface of the follower plate 55 and is engaged with the drive cam 51, ). ≪ / RTI >

5, helical cam grooves 52 are formed. When the driving cam 51 is rotated through this structure, the cam grooves 52 are formed in the circumferentially continuous cam follower bearings 53, and this action allows the follower plate 55 to rotate.

The deceleration switching unit 50 transmits the rotational power transmitted in the vertical direction through the servomotor 31 to the horizontal direction via the driving cam 51 and the cam follower bearing 53, 51 to the cam follower bearings 53, and at the same time, the deceleration is performed at the same time. The deceleration switching unit 50 basically uses the worm gear principle and constitutes a worm on the driving cam 51 without using the driving cam 51 and the cam follower bearing 53, It is also possible to constitute a worm wheel having gear teeth meshed with the worm, so that switching and deceleration of the power transmission direction can be achieved.

The magazine shaft 70 is installed horizontally in the cylindrical portion 17 of the body 10. The magazine shaft 70 has a flange portion 72 at an intermediate portion thereof and is assembled with the follower plate 55, The magazine plates 92 and 93 to be described below are assembled at both ends.

The magazine assemblies 90 and 91 include both magazine plates 92 and 93 assembled at both ends of the magazine shaft 70 and tool holders 94 and 95 installed around the magazine plates 92 and 93 ).

That is, the magazine assemblies 90 and 91 include both the magazine plates 92 and 93 assembled with the magazine shaft 70 and the tool holders 94 and 95, which are mounted on the circumferential surface of the magazine plates 92 and 93, It is preferable that the constituent elements are continuously provided.

As described above, the technical ideas described in the embodiments of the present invention can be implemented independently of each other, and can be implemented in combination with each other. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. It is possible. Accordingly, the technical scope of the present invention should be determined by the appended claims.

10: Body 11: Main body
12, 13: side cap 15: cylinder coupling portion
16: drive mounting portion 17: cylindrical portion
20: lifting cylinder 25: fixed block
30: Driving unit 31: Servo motor
35: coupling box 37: coupling
39: drive shaft 50: deceleration switching section
51: driving cam 52: cam groove
53: cam follower bearing 55: follower plate
70: magazine shaft 72: flange portion
90, 91: magazine assembly 92, 93: magazine plate
94, 95: Tool holder

Claims (5)

The elevating cylinder is fixed to the machine tool main body through a fixing block. The elevating cylinder is supported by the machine tool main body. The elevating cylinder is located at an upper center portion of the elevating cylinder, And a cylinder formed at a lower portion of the cylinder coupling portion. The cylinder attachment portion includes:
A dual magazine assembly in which magazine assemblies on which the tools are mounted are formed on both sides of the cylindrical portion and are engaged with the cylindrical portion;
A magazine shaft horizontally positioned within the cylindrical portion and engaged with the dual magazine assembly as a rotation axis;
A driving unit mounted vertically on an upper portion of the driving unit, a driving shaft disposed in a vertical direction inside the driving unit, and a coupling unit connecting the shaft of the motor and the driving shaft. And
A follower plate mounted on the cylindrical portion and rotatably mounted on the drive shaft; a follower plate rotatably mounted on the magazine shaft; and a follower plate mounted on the one surface of the follower plate at a predetermined interval in the circumferential direction, And a deceleration switching unit including a cam follower bearing which is coupled and receives power. The method according to claim 1,
Wherein the cylindrical portion is formed in a structure in which both ends of the magazine shaft are exposed, both side caps are opened, a side cap is coupled to the opened portion, and the magazine shaft is rotatably supported inside the opened portion Wherein the bearing structure is mounted on the first magazine. The method according to claim 1,
Wherein at least one helical cam groove is formed in the drive cam. The method according to claim 1,
Wherein the drive mounting portion is formed with a shaft hole to allow the drive shaft to pass therethrough and rotatably support the drive shaft, and a lower cap rotatably supporting the lower portion of the drive shaft is formed at a lower portion thereof. Single - acting automatic tool changer. The method according to claim 1,
Wherein the magazine assembly includes a magazine plate assembled to both ends of the magazine shaft, and a tool holder mounted around the magazine plate and on which the tool is mounted.

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