KR20120062198A - A metalwork fall preventing device of a machine tool - Google Patents

A metalwork fall preventing device of a machine tool Download PDF

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Publication number
KR20120062198A
KR20120062198A KR1020100123353A KR20100123353A KR20120062198A KR 20120062198 A KR20120062198 A KR 20120062198A KR 1020100123353 A KR1020100123353 A KR 1020100123353A KR 20100123353 A KR20100123353 A KR 20100123353A KR 20120062198 A KR20120062198 A KR 20120062198A
Authority
KR
South Korea
Prior art keywords
motor
gravity
signal
unit
power
Prior art date
Application number
KR1020100123353A
Other languages
Korean (ko)
Inventor
김정훈
Original Assignee
두산인프라코어 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 두산인프라코어 주식회사 filed Critical 두산인프라코어 주식회사
Priority to KR1020100123353A priority Critical patent/KR20120062198A/en
Publication of KR20120062198A publication Critical patent/KR20120062198A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
    • B23Q11/0017—Arrangements compensating weight or flexion on parts of the machine compensating the weight of vertically moving elements, e.g. by balancing liftable machine parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
    • B23Q15/22—Control or regulation of position of tool or workpiece
    • B23Q15/24—Control or regulation of position of tool or workpiece of linear position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools

Abstract

PURPOSE: An apparatus and a method for preventing a metalwork from falling down from a machine tool are provided to prevent damage to a metalwork when a tool connected to a motor falls down by forcefully rotating the motor in a reverse direction. CONSTITUTION: An apparatus(1000) for preventing a metalwork from falling down from a machine tool comprises a relay unit(100), a PLC unit(200), a control unit(300), and a digital-analog converter(400). The relay unit is electrically connected to a motor(2000) rotated in a gravity direction and generates a relay signal. The PLC unit is connected to the relay unit and generates a power cutoff signal by sensing the relay signal. And the PLC unit stores a signal for rotating the motor in a reverse direction. The control unit controls the motor to rotate the motor in a reverse direction based on the power cutoff signal. The digital-analog converter converts the digital signal of the control unit into an analog signal.

Description

Work fall prevention device and method of machine tool {A Metalwork Fall Preventing Device Of A Machine Tool}

The present invention relates to a workpiece fall prevention apparatus and method of a machine tool, and more particularly, in the event of a power failure in the machine tool, in preparation for detachment of a tool mounting part (for example, a spindle, etc.), the power supply is sensed and residual power is supplied to the tool. The present invention relates to a workpiece drop prevention apparatus and method for a machine tool which can be applied to a mounting portion to prevent a drop of the mounting portion or the like.

In general, in the case of a factory where a large number of machine tools are installed, the power situation is often poor due to the small size, so that a power outage sometimes occurs.

On the other hand, the power supply of the machine tool may be cut off due to a novice or an operator error.

In the event of a power failure caused by such a power failure or a mistake, the machine tool was cut off and the operation of the mounting part where the tool was fixed stops. Falling toward this can cause damage to the tool as well as the workpiece.

Since a conventional machine tool does not include a protection structure to prevent the tool from being detached from the tool mounting part during a power failure, the workpiece may be damaged due to the power cut due to the power failure. In contrast, it is urgent to develop a structure that can prevent the falling of the tool.

The present invention is derived to solve the above conventional problems, the object of the present invention, the power can be detected, the work that can prevent the falling of the tool by applying the remaining power to the tool mounting portion at the same time with the power off It is to provide a workpiece fall prevention device of the machine.

According to an aspect of the present invention to achieve the above object, the workpiece fall prevention device of the machine tool capable of preventing the fall of the tool by forcing the rotation of the axis in the direction of gravity in the opposite direction of gravity by detecting whether the power is cut off ( 1000) is proposed.

The workpiece fall prevention apparatus 1000 of the machine tool according to the present invention is electrically connected to the motor 2000 in the gravity direction of the machine tool to generate a relay signal according to whether the power of the motor 2000 in the gravity direction is supplied. In response to the relay unit 100 and the relay unit 100 intercepting the power of the motor 2000 in the gravity direction, the relay unit 100 detects whether the relay signal is blocked to generate a power cutoff signal, and gravity A PLC unit 200 electrically connected to store the rotation direction signal of the motor 2000 in the gravity direction corresponding to the direction opposite to the direction, and based on the power-off signal of the PLC unit 200 The controller 300 and the controller are electrically connected to the PLC unit 200 and the motor 2000 in the gravity direction to command the motor 2000 in the gravity direction so that the motor 2000 can rotate in the opposite direction to gravity. 300's And a digital-analog converter 400 for converting a digital signal into an analog signal of the motor 2000 in the gravity direction.

In addition, according to another aspect of the present invention proposes a method for preventing the workpiece fall of the machine tool using the apparatus 1000.

The workpiece fall prevention method of the machine tool according to the present invention includes the steps of storing the rotation direction signal of the motor 2000 in the machine tool gravity direction corresponding to the direction opposite to the gravity direction (S 10, S 20), the gravity direction Generating a relay signal according to whether the motor 2000 is supplied with power (S 30 and S 40), and whether the relay signal is blocked by the relay unit 100 when the power of the motor 2000 in the gravity direction is cut off. Sensing and generating a power down signal (S 50);

And (S 60) instructing the motor 2000 in the direction of gravity to rotate in the opposite direction of gravity based on the power cutoff signal.

According to the workpiece drop prevention apparatus of the machine tool according to the present invention as described above, when the tool connected to the motor in the gravity direction in accordance with the power off, the situation in which the motor in the direction of gravity opposite to the gravity direction by checking the power cut off Since it can be forcibly rotated, the fall of the tool and the damage of the workpiece can be prevented in advance.

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.

1a to 1c is a configuration diagram of the workpiece fall prevention apparatus of the machine tool according to the invention,
FIG. 2 is an operation flowchart of the workpiece fall prevention apparatus shown in FIG. 1.

Hereinafter, the workpiece fall prevention apparatus of the machine tool according to the present invention will be described with reference to the accompanying drawings.

1a to 1c is a block diagram of the workpiece fall prevention apparatus 1000 of the machine tool according to the present invention.

As shown in Figure 1a, the workpiece fall prevention apparatus 1000 of the machine tool according to the present invention, based on the operation of the relay unit 100 electrically connected to the motor 2000 in the direction of gravity, the motor in the direction of gravity It has a structure capable of forcing the rotation direction of (2000).

To this end, the workpiece fall prevention apparatus 1000 of the machine tool according to the present invention includes a relay unit 100, a PLC unit 200, a control unit 300, and a digital-analog converter 400.

The relay unit 100 is electrically connected to the motor 2000 in the direction of gravity of the machine tool to generate a relay signal depending on whether the power of the motor 2000 in the direction of gravity is supplied.

The PLC unit 200 interlocks with the relay unit 100 and detects whether the relay unit 100 cuts off the relay signal when the power of the motor 2000 in the gravity direction is cut off, and generates a power cutoff signal in a direction opposite to the gravity direction. It is electrically connected to store the rotational direction signal of the motor 2000 in the corresponding gravity direction.

As illustrated in FIG. 1B, the PLC unit 200 includes a power cutoff detector 210, a gravity direction axis detector 220, and an anti-gravity rotation detector 230.

The power cutoff detection unit 210 generates a power cutoff signal by detecting whether the relay signal is cut off by the relay unit 100 when the power of the motor 2000 in the gravity direction is cut off.

The gravity direction axis detector 220 detects which axis is in the same direction as the gravity direction and stores this information.

The anti-gravity rotation detection unit 230 detects a rotation direction signal of the motor 2000 in the gravity direction corresponding to the direction opposite to the gravity direction based on the detection result of the gravity direction axis detection unit 220.

Referring back to FIG. 1A, the controller 300 controls the PLC unit 200 and the motor in the direction of gravity to allow the motor 2000 in the direction of gravity to rotate in the opposite direction of gravity based on the power-off signal of the PLC unit 200. It is electrically connected to 2000, and commands as a control signal to the motor 2000 in the gravity direction.

1c shows a detailed configuration of the control unit 300, as shown in the control unit 300 is a relay drive control unit 310 for controlling the operation of the relay unit 100, the operation of the PLC unit 200 To control the PLC control unit 320, the power cutoff signal received from the PLC unit 200 to the digital-to-analog converter 400, and to control the numerical control device (NC) NC control unit 340 and the power control unit 350 for controlling the power supplied to the motor 2000 in the gravity direction.

The operation process of the workpiece fall prevention apparatus 1000 according to the present invention by the configuration described above will be described with reference to the flowchart of FIG. 2.

When the operation is started, the gravity direction axis detection unit 210 of the PLC unit 200 detects the rotation direction signal of the motor 2000 in the gravity direction of the machine tool corresponding to the direction opposite to the gravity direction and stores the result (S). 10).

In addition, the anti-gravity rotation detection unit 230 of the PLC unit 200 stores the rotation direction signal of the motor 2000 in the gravity direction corresponding to the anti-gravity direction based on the detection result of the gravity direction axis detection unit 210 ( S 20).

Then, the power cut detection unit 210 determines whether the machine power is turned off during operation, and when the power is turned off, the relay unit 100 drives the power cut-off check relay and cuts the power to the PLC unit 200. Transmit the relay signal (S 30, S 40, S 50).

When the PLC unit 200 receives the power shut-off confirmation relay signal from the relay unit 100, the PLC unit 200 generates a power interruption signal based on the data stored in the anti-gravity rotation detection unit 230. A signal for causing the motor 2000 to rotate in the direction opposite to gravity is commanded to the control unit 300 of the numerical controller NC (S 60).

The controller 300 of the numerical control device generates a control signal to rotate the motor 2000 in the direction of gravity in the direction opposite to gravity based on the signal received from the PLC unit 200 (S 70). In this case, the digital signal of the controller 300 may be converted into an analog signal of the motor 2000 in the gravity direction by using the digital-analog converter 400.

Then, the controller 300 checks whether the power supply of the amplifier is completely exhausted and completes the operation when the power supply of the amplifier is completely exhausted (S80).

As described above, the workpiece fall prevention apparatus 1000 according to the present invention prevents the tool or the workpiece from dropping immediately after the power is cut by restricting the motor 2000 in the gravity direction to rotate in a direction opposite to the gravity direction according to the time when the power is cut off. You can do it.

100: relay unit 200: PLC unit
210: power off detection unit 220: gravity direction axis detection unit
230: anti-gravity rotation detection unit 300: control unit
310: relay drive control unit 320: PLC control unit
330: power cutoff signal transmission unit 340: NC control unit
350: power control unit 400: digital-to-analog converter,
1000: workpiece fall prevention device 2000: motor in the direction of gravity

Claims (2)

A relay unit 100 electrically connected to the motor 2000 in the gravity direction of the machine tool and generating a relay signal depending on whether the power of the motor 2000 in the gravity direction is supplied;
When the power source of the motor 2000 in the gravity direction is interlocked with the relay unit 100, the relay unit 100 detects whether the relay signal is blocked to generate a power interruption signal, and corresponds to a direction opposite to the gravity direction. PLC unit 200 is electrically connected to store the rotation direction signal of the motor 2000 in the gravity direction,
The motor 2000 in the direction of gravity is electrically connected to the PLC unit 200 and the motor 2000 in the direction of gravity so that the motor 2000 in the direction of gravity may rotate in the opposite direction of gravity based on the power off signal of the PLC unit 200. The control unit 300 for commanding the motor 2000 in the gravity direction and
Digital-to-analog converter 400 for converting the digital signal of the control unit 300 into an analog signal of the motor 2000 in the direction of gravity
Workpiece fall prevention device of the machine tool, characterized in that it comprises a 1000. Storing the rotation direction signal of the motor 2000 in the direction of gravity of the machine tool corresponding to the direction opposite to the direction of gravity (S 10 and S 20),
Generating a relay signal according to whether the power of the motor 2000 in the gravity direction is supplied (S 30, S 40),
Generating a power cutoff signal by detecting whether the relay signal is blocked by the relay unit 100 when the power cutoff of the motor 2000 in the gravity direction (S50),
Commanding the motor 2000 in the gravity direction to rotate in the opposite direction of gravity based on the power cutoff signal (S 60)
Workpiece fall prevention method of the machine tool comprising a.
KR1020100123353A 2010-12-06 2010-12-06 A metalwork fall preventing device of a machine tool KR20120062198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100123353A KR20120062198A (en) 2010-12-06 2010-12-06 A metalwork fall preventing device of a machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100123353A KR20120062198A (en) 2010-12-06 2010-12-06 A metalwork fall preventing device of a machine tool

Publications (1)

Publication Number Publication Date
KR20120062198A true KR20120062198A (en) 2012-06-14

Family

ID=46683210

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100123353A KR20120062198A (en) 2010-12-06 2010-12-06 A metalwork fall preventing device of a machine tool

Country Status (1)

Country Link
KR (1) KR20120062198A (en)

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