KR20020058397A - ATC Manual Control Device Using CAM Drive And Method Thereof - Google Patents

Abstract

The present invention relates to a cam shaft which is attached to a motor of a machine tool and rotated to the other end of the cam shaft, and to which the dog is attached to the outer circumference to detect an initial position of a tool change arm when the tool is automatically changed. 1 Automatic initial position sensing switch composed of proximity sensor, 2nd rotating plate with dog attached to outer circumference and tool unclamp switch to release tool when changing tool, and attached dog on outer circumference An automatic tool changer of a machine tool comprising a third clamping plate and a third proximity sensor, wherein the tool clamp switch asks a tool when exchanging a tool, the tool changing arm being attached to the other end of the cam shaft and manually changing the tool. A number consisting of a fourth rotating plate with a dog attached to its outer periphery for sensing its position and a fourth proximity sensor for detecting the dog It relates to a cam drive ATC manual control apparatus and method comprising a; initial position detection switch for the same.

Description

ATC Manual Control Device Using CAM Drive And Method Thereof}

The present invention relates to a cam drive ATC device, and more particularly, by further attaching a manual initial position detecting switch to detect a manual initial position detecting switch when manually transferring a tool change arm, the motor power is cut off. A cam drive ATC manual control apparatus and method for causing an exchange arm to stop in position.

1 is a schematic diagram of an ATC device using a conventional cam.

As shown in FIG. 1, the drive control of the ATC 600 using the conventional cam 500 is performed by the motor 510 driving the cam 500 at the speed commanded at the time of the tool change command in the automatic mode. Arm 530 exchanges tool 540 and standby tool 550 of the spindle. At this time, when the motor 510 rotates and detects the switch 520 for detecting the initial position of the cam 500, the driving of the cam 500 is stopped and the tool is exchanged.

However, when stopping in the intermediate position during emergency stop or tool change while performing the automatic mode, the tool change arm 530 moves to the initial position while manually stepping. At this time, when the tool change arm 530 manually moves the step, the switch for the initial position detection of the ATC 600 operates 520 and the replacement motor (not shown) stops. The tool change arm 530 is inclined from the normal position due to the difference in rotation speed. Thus, by selecting and performing the 1-cycle mode in the manual operation panel to move it to the normal position, the exchange motor (not shown) is operated at the normal exchange speed to transfer the arm to the normal position. If the 1-cycle is not performed, an alarm occurs or a collision occurs due to interference with the ATC 600 door.

By carrying out one more cycle during manual operation as described above, not only the working time is delayed, but also the operator has to take the hassle every time.

Accordingly, the present invention has been made in view of the above-described conventional problems, and a first object of the present invention is to further attach a manual initial position detecting switch to a cam shaft for driving a tool change arm, thereby manually changing a tool or A cam drive ATC manual control apparatus and method for stopping an exchange arm immediately in the initial position of a tool change when an abnormal stop is provided is provided.

The second object of the present invention is to further attach a manual initial position detecting switch to a cam shaft for driving a tool change arm, thereby providing an ATC manual control device and method for cam driving without a risk of collision even if a novice maneuvers manually. will be.

The object of the present invention, the cam shaft is attached to the rotating motor of the machine tool and the other end of the cam shaft is attached to the other end of the tool to automatically detect the initial position of the tool change arm when changing tools Automatic initial position sensing switch consisting of a rotating plate and a first proximity sensor, a tool unclamp switch for releasing the tool during tool change, consisting of a second rotating plate and a second proximity sensor with a dog attached to the outer circumference, In the automatic tool changer of the machine tool consisting of a third clamp plate attached to the dog and the third proximity sensor to the tool clamp switch to ask the tool when changing the tool,

Manual initial position detection consisting of a fourth rotating plate attached to the other end of the cam shaft and the fourth rotating plate attached to the dog on the outer circumference to detect the initial position of the tool change arm when manually changing tools It is achieved by the ATC manual control device for driving a cam comprising a switch.

In addition, in the ATC control method using a cam of the machine tool,

An ATC door opening step of opening a door of the ATC for the operator to select a tool change operation mode;

A tool change operation mode selection step of selecting a tool change operation mode as a manual operation or an automatic operation mode;

A motor rotation step of rotating the motor step by step by a manual operation switch when selecting a manual operation in the tool change operation mode selection step;

A manual initial position detection switch operating step of sensing an initial position of a manual tool change;

And a motor stopping step of stopping the rotation of the motor when the manual initial position detecting switch detects the initial position.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

1 is a schematic diagram of an ATC device using a conventional cam,

2A is a schematic diagram of an ATC device using a cam according to the present invention;

2b is a plan view of a rotating plate used in the ATC device using a cam according to the present invention,

3 is a flowchart illustrating a process of performing a tool change operation in an automatic change mode and a manual change mode of a tool.

<Description of the symbols for the main parts of the drawings>

10: cam 20: motor

30: camshaft 50: automatic initial position detection switch

52: first rotating plate 54: first proximity sensor

60: tool unclamp switch 62: second rotating plate

64: second proximity sensor 70: tool clamp switch

72: third rotating plate 74: third proximity sensor

80: manual initial position detection switch 82: fourth rotating plate

84: fourth proximity sensor 90: dog

100: tool change arm 110: spindle tool

115: Standby tool 200: ATC

500: cam 510: motor

520: initial position detection switch 530: tool change arm

540: spindle tool 550: standby tool

600: ATC

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2A is a schematic diagram of an ATC device using a cam according to the present invention, and FIG. 2B is a plan view of a rotating plate used in the ATC device using a cam according to the present invention.

As shown in FIGS. 2A and 2B, a cam 10 for driving the tool change arm 100 is fitted to an intermediate region of the cam shaft 30, and one end of the cam shaft 30 has a motor. (20) is attached. The motor 20 attached to one end of the cam shaft 30 provides power to rotate the cam shaft 30.

And the other end of the cam shaft 30, the initial position detection switch for automatic consisting of the first rotary plate 52 and the first proximity sensor 54 for detecting the initial position of the tool change arm 100 at the time of automatic tool replacement 50 is attached. On the outer circumference of the first rotating plate 52 constituting the automatic initial position detecting switch 50, the first proximity sensor 54, which is located in proximity to the dog 90, is attached to the dog 90. Sensing.

In addition, the other end of the cam shaft 30 is a manual initial position detection switch consisting of a fourth rotating plate 82 and a fourth proximity sensor 84 for detecting the initial position of the tool change arm 100 at the time of manual tool exchange. 80 is attached. On the outer circumference of the fourth rotating plate 82 constituting the manual initial position detecting switch 80, the fourth proximity sensor 84 located close to the dog 90 is attached to the dog 90. Sensing.

In addition, at the other end of the cam shaft 30, the second rotating plate 62 and the second proximity sensor (62) for releasing the tools (110, 115) are held in the machine tool (not shown) when the tools (110, 115) are replaced. A tool unclamp switch 60 consisting of 64 is attached. On the outer circumference of the second rotating plate 62 constituting the tool unclamp switch 60, the second proximity sensor 64 located in close proximity with a predetermined number of dogs 90 is attached to sense the dogs 90. do.

On the other end of the cam shaft 30, a tool clamp switch composed of a third rotating plate 72 and a third proximity sensor 74 for asking the tools 110 and 115 exchanged when the tools 110 and 115 are replaced. 60 is attached. On the outer circumference of the third rotating plate 72 constituting the tool clamp switch 60, a predetermined number of dogs 90 are attached, and the third proximity sensor 74 located in close proximity senses the dogs 90. .

The ATC device using the cam of the above-described structure operates as follows.

In the ATC 200 for exchanging the tools 110 and 115 of the machine tool (not shown), the tool change arm 100 is operated by the cam 10 to exchange the tool 110 and the standby tool 115 of the main shaft. Done. The automatic initial position detection switch 50 is a tool change arm (100) by detecting the dog 90 attached to the first rotating plate 52 when the tool (110, 115) is automatically replaced by the first proximity sensor (54) ) To the initial position. Then, the tools 110 and 115 held by the machine tool (not shown) are sequentially released by the tool unclamp switch 60 including the second rotating plate 62 and the second proximity sensor 64, and the third rotating plate 72. The tool 110, 115 exchanged by the tool clamp switch 70 consisting of the third proximity sensor 74 is bitten by a machine tool (not shown), so that the tool 110, 115 is exchanged.

In addition, the manual initial position detection switch 80 is the fourth proximity sensor 84 detects the dog 90 attached to the outer periphery of the fourth rotating plate 82 during manual replacement of the tools (110, 115) Bring the tool change arm 100 back to its initial position. Then, the tools 110 and 115 that are bitten by the machine tool (not shown) are sequentially released by the tool unclamp switch 60 including the second rotating plate 62 and the second proximity sensor 64, and the third rotating plate ( The tools 110 and 115 exchanged by the tool clamp switch 70 composed of the 72 and the third proximity sensor 74 are bitten by a machine tool (not shown), thereby exchanging the tools 110 and 115.

As described above, since the tools 110 and 115 are replaced by automatic or manual replacement, the rotational speed of the motor 20 is faster at the time of automatic replacement, and the rotational speed of the motor 20 is higher than at the time of automatic replacement. Relatively slow Therefore, the dog (90) attached to the first rotating plate 52 of the automatic initial position detection switch 50 in the length of the dog 90, which is the portion detected by the first and fourth proximity sensors 54, 84 ( 90 is longer than the length of the dog 90 attached to the fourth rotating plate 82 of the manual initial position detection switch (80).

Hereinafter, a process of performing manual exchange and automatic exchange of the tools 110 and 115 through the flowchart of FIG. 3 will be described in more detail.

3 is a flowchart illustrating a process of performing a tool change operation in an automatic change mode and a manual change mode of a tool.

3, the tool change operation mode selection step in which the operator selects the manual operation or the automatic operation mode through the ATC door opening step S100 of opening the door of the ATC 200 in order to select the tool change operation mode. It reaches (S110).

In addition, when the motor 20 rotates step by step by the manual operation switch (S120) when the manual operation is selected in the tool change operation mode selection step (S110), the manual initial position detection switch 80 for the manual tool exchange initial position is selected. Detection (S130). In addition, when the manual initial position detection switch 80 detects the initial position (S130), the rotation of the motor 20 is stopped and the tools 110 and 115 are exchanged (S180).

In addition, a tool change operation mode selection step (S110) in which an operator selects a manual operation or an automatic operation mode through an ATC 200 door opening step (S100) that opens a door of the ATC 200 to select a tool change operation mode. Leads to

When the automatic operation is selected in the tool change operation mode selection step (S110), when the automatic cycle motor 20 rotates (S150) by the PLC, the automatic initial position detection switch 50 detects the initial position of the automatic tool change ( S160). In addition, when the automatic initial position detection switch 50 detects the initial position (S160), the rotation of the motor 20 is stopped (S170), and the tools 110 and 115 are exchanged (S180).

That is, when the operator opens the door of the ATC 200 (S100) and selects the tool change operation mode as the manual operation (S110), the motor 20 rotates (S120) and detects the manual initial position detection switch 80 for manual operation. When the motor 20 stops (S140) (S130), a tool change (S180) is performed. At this time, the rotation of the motor 20 is achieved by stepwise rotation (step feed) by a manual operation switch. In addition, when the operator opens the door of the ATC 200 (S100) and selects the tool change operation mode as the automatic operation (S110), the motor 20 rotates (S150) and detects the initial position detecting switch 50 for the automatic ( When the motor 20 is stopped (S170) by S160, a tool change (S180) is performed. At this time, the rotation of the motor 20 is made by automatic cycle rotation by the PLC.

As described above, according to the cam drive ATC 200 manual control apparatus and method according to the present invention, the manual initial position detection switch 80 to the cam shaft 30 for driving the tool change arm 100 Further, it was possible to stop the tool change arm 100 to the initial position of the tool change immediately upon manual change of the tools 110 and 115 or when the tool change arm 100 stopped abnormally. And by further attaching a manual initial position detection switch 80 to the cam shaft 30 for driving the tool change arm 100, even if the novice manually operates the tool change arm 100 is a tool (110, 115) It is possible to manually control the cam driving ATC (200) without the risk of collision with the). Therefore, even beginners can work with confidence, and work time is reduced, productivity is improved, and losses due to breakage of machine tools (not shown) are also reduced.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, various other modifications and variations may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

Claims (2)

It is attached to the cam shaft 30 which is attached to the motor 20 of the machine tool and rotates and is attached to the other end of the cam shaft 30 so as to automatically detect the initial position of the tool change arm 100 during tool change. Automatic initial position detection switch 50 consisting of a first rotating plate 52 with a dog 90 and a first proximity sensor 54, and a second rotating plate 62 with a dog 90 attached to its outer circumference. And the second proximity sensor 64, a tool unclamp switch 60 for releasing the tools 110 and 115 when the tools 110 and 115 are replaced, and a third rotating plate to which a dog 90 is attached to the outer periphery. In the automatic tool changer of the machine tool consisting of a tool clamp switch 70 consisting of 72) and the third proximity sensor 74 to ask the tool (110, 115) when replacing the tool (110, 115), The fourth rotating plate 82 and the dog 90 attached to the other end of the cam shaft 30, the dog 90 is attached to the outer circumference so as to detect the initial position of the tool change arm 100 when manually changing a tool. Manual initial position detection switch (80) consisting of a fourth proximity sensor (84) for detecting the; ATC manual control device for a cam drive. In the ATC control method using the cam 10 of the machine tool, A tool change operation mode selecting step (S110) of selecting a tool change operation mode as a manual operation or an automatic operation mode; A motor rotation step (S120) of rotating the motor 20 step by step by a manual operation switch when selecting a manual operation in the tool change operation mode selection step; Manual initial position detection switch operation step for detecting the initial position of the manual tool change (S130); And a motor stopping step (S140) of stopping the rotation of the motor (20) when the manual initial position detecting switch (80) detects the initial position.