KR100203801B1 - Cutting anti-feed control device and method in the event of table unclamping - Google Patents

Cutting anti-feed control device and method in the event of table unclamping Download PDF

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Publication number
KR100203801B1
KR100203801B1 KR1019960057729A KR19960057729A KR100203801B1 KR 100203801 B1 KR100203801 B1 KR 100203801B1 KR 1019960057729 A KR1019960057729 A KR 1019960057729A KR 19960057729 A KR19960057729 A KR 19960057729A KR 100203801 B1 KR100203801 B1 KR 100203801B1
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South Korea
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state
unclamp
control unit
unit
axis
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KR1019960057729A
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Korean (ko)
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KR19980038801A (en
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이성우
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추호석
대우중공업주식회사
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    • 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
    • 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
    • B23Q11/04—Arrangements preventing overload of tools, e.g. restricting load
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/26—Stopping the feed in case of overload or a break in a boring machine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)

Abstract

본 발명은 수평형 머시닝(Machining) 센타에 관한 것으로, 특히 공작기계에서 B축(Table, 회전축)이 언클램프(Unclamp) 상태일때 절삭이송을 방지하도록 한 테이블 언클램프(Unclamp)시 절삭이송 방지 제어장치 및 방법에 관한 것으로, 자동모드에서 절삭이송을 지령하여 가공상태로 들어가고 주축회전 상태를 감지하여 주축이 정지 상태일때 가공을 하지 않는 단계와(S1)(S2), 상기 주축이 회전 상태일때 테이블 클램프 상태를 확인하여 테이블 클램프 스위치가 온(On)이면 축을 이송시켜 공작물을 정상적으로 절삭을 하는 단계와(S3-S6), 상기 테이블 클램프 상태를 확인하여 테이블 클램프 스위치가 오프(Off)일때 축 이송속도가 0으로 되어 축이송이 정지되는 단계와(S7-S9), 이후 테이블 언클램프 상태의 알람이 발생되고 공작물 가공이 중지되는 단계(S10)(S11)로 이루어짐으로써, 본 발명은 현재의 테이블의 B축(회전축) 상태를 확인하여 테이블 언클램프 상태에서 절삭이송 지령시 축 이송이 안되게 함으로써,작업자의 오동작을 미연에 방지하고, 과부하에 의한 축 제어용 드라이브 유니트의 소손과 공작물의 불량품 발생 요소를 제거할 수 있는 효과가 있다.BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a horizontal machining center, and in particular, a cutting feed prevention control during unclamping of a table to prevent a cutting feed when a B axis (Table, a rotating shaft) is unclamped in a machine tool. Apparatus and method, comprising the step of entering the machining state by commanding cutting feed in the automatic mode and detecting the spindle rotation state and not machining when the spindle is stationary (S1) (S2), and the table when the spindle is in the rotation state Checking the clamp status, if the table clamp switch is On, move the shaft to cut the workpiece normally (S3-S6), and check the table clamp status when the table clamp switch is Off. Becomes 0 and stops the axis feed (S7-S9), and then generates an alarm of the table unclamp state and stops the workpiece machining (S10) (S11). Thus, the present invention checks the current state of the B-axis (rotation shaft) of the table to prevent the axis transfer during the cutting transfer command in the table unclamp state, thereby preventing the malfunction of the operator in advance, It has the effect of eliminating burnout and defective parts of workpiece.

Description

테이블 언클램프(Unclamp)시 절삭이송 방지 제어장치 및 방법Control device and method for cutting feed prevention at table unclamp

본 발명은 수평형 머시닝(Machining) 센타에 관한 것으로, 특히 공작기계에서 B축(Table, 회전축)이 언클램프(Unclamp) 상태일때 절삭이송을 방지하도록 한 테이블 언클램프(Unclamp)시 절삭이송 방지 제어장치 및 방법에 관한 것이다.BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a horizontal machining center, and in particular, a cutting feed prevention control during unclamping of a table to prevent a cutting feed when a B axis (Table, a rotating shaft) is unclamped in a machine tool. An apparatus and method are provided.

도 1은 종래 수평형 머시닝 센타의 테이블 클램프시 신호흐름도로서, 자동모드에서 절삭이송을 지령하여 가공상태로 들어가고 주축회전 상태를 감지하여 주축이 정지 상태일때 가공을 하지 않는 단계와(S1)(S2), 상기 주축이 회전 상태일때 테이블 클램프 상태를 확인하여 테이블 클램프 스위치가 온(On)이면 축을 이송시켜 공작물을 정상적으로 절삭을 하는 단계(S3-S6)로 이루어진다.1 is a signal flow chart when a table clamp of a conventional horizontal machining center, the step of entering the machining state by commanding the cutting feed in the automatic mode and detecting the spindle rotation state and not machining when the spindle is stationary (S1) (S2) When the spindle is rotated, the table clamp state is checked, and when the table clamp switch is turned on, the shaft is moved to cut the workpiece normally (S3-S6).

그리고, 상기 수평형 머시닝 센타에서 B축이 인덱스 타입일때 공작물 가공시에 반드시 테이블 클램프 상태에서 가공하는데, 이때 작업자가 테이블 언클램프 상태에서 가공하였을때 B축 위치가 변화하여 가공한 공작물은 불량이 되어 사용하지 못하고, 서보 온(On) 상태에서 장시간 절삭을 함으로써 과부하 등으로 인한 축 제어용 서보 드라이브 유니트의 이상이 발생된다.In the horizontal machining center, when the B axis is an index type, the workpiece is processed in a table clamp state when the workpiece is processed. In this case, when the operator processes the table in an unclamped state, the B axis is changed and the processed workpiece becomes defective. It is impossible to use, and by cutting for a long time in the servo-on state, abnormality of the servo drive unit for axis control due to overload or the like occurs.

상기와 같이 종래 수평형 머시닝 센타에 있어서는 테이블 클램프 상태에서 가공하므로 공작물 가공시 B축 위치가 변화하여 가공한 공작물은 불량이 되고, 아울러 서보 온(On) 상태에서 장시간 절삭을 함으로써 과부하 등으로 인한 축 제어용 서보 드라이브 유니트에 이상이 발생되는 문제점이 있었다.As described above, in the conventional horizontal machining center, the workpiece is processed in a table clamp state, and thus the workpiece processed due to the change of the B-axis position during the workpiece machining becomes defective, and the shaft caused by the overload by cutting for a long time in the servo-on state. There was a problem that an error occurs in the control servo drive unit.

도 1은 종래 수평형 머시닝 센타의 테이블 클램프시 신호흐름도.1 is a signal flow diagram of a table clamp of a conventional horizontal machining center.

도 2는 본 발명 테이블 언클램프(Unclamp)시 절삭이송 방지 제어장치Figure 2 is a cutting feed prevention control device at the time of the table unclamp (unclamp) of the present invention

블럭도.Block diagram.

도 3은 본 발명 테이블 언클램프(Unclamp)시 절삭이송 방지 제어방법의 신호흐름도.3 is a signal flow diagram of a cutting feed prevention control method when the table unclamps the present invention.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

10 : NC 조작반 20 : NC 주제어부10: NC control panel 20: NC main control part

30 : 피엘씨(PLC) 제어부 40 : 리미트 스위치30: PLC control unit 40: limit switch

50 : 입력신호부 60 : 피엘씨(PLC) 입/출력부50: input signal unit 60: PLC input / output unit

70 : 출력신호부 80 : 솔레노이드70: output signal unit 80: solenoid

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위한 수단으로, 테이블 상태가 클램프/언클램프 상태인지를 센서가 감지하여 테이블 언클램프 상태에서 절삭이송 지령시 이송속도를 0으로 하여 축 이송을 중지시킴으로써 달성된다.The present invention is a means for solving the problems of the prior art as described above, the sensor detects whether the table state is a clamp / unclamp state, the axis feed stops at the feed rate at the cutting feed command in the table unclamp state to 0 Is achieved.

이하에서 본 발명의 바람직한 실시 예를 첨부된 도면에 의거 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명 테이블 언클램프(Unclamp)시 절삭이송 방지 제어장치 블럭도로서, 이에 도시한 바와 같이 절삭이송의 지령을 하는 NC 조작반(10)과, 상기 NC 조작반(10)의 지령에 대한 수행여부를 결정하는 NC 주제어부(20)와, 입/출력 신호를 제어하고 상기 NC 주제어부(20)에 출력하는 피엘씨(PLC) 제어부(30)와, 테이블 클램프/언클램프의 상태를 감지하여 스위치를 온/오프 하는 리미트 스위치(40)와, 상기 리미트 스위치(40)의 온/오프 상태를 입력받아 출력하는 입력신호부(50)와, 상기 입력신호부(50)의 입력신호를 상기 피엘씨(PLC) 제어부(30)에 전달하고 그 피엘씨(PLC) 제어부(30)의 제어신호를 출력하는 피엘씨(PLC) 입/출력부(60)와, 상기 피엘씨(PLC) 제어부(30)의 테이블 클램프/언클램프의 제어신호를 상기 피엘씨(PLC) 입/출력부(60)를 통해 입력받아 출력하는 출력신호부(70)와, 상기 출력신호부(70)의 테이블 클램프/언클램프의 출력신호에 따라 온/오프 되는 솔레노이드(80)를 포함하여 구성된 것으로, 이의 작용 및 효과를 상세히 설명하면 다음과 같다.2 is a block diagram of a cutting feed prevention control device when the table is unclamped according to the present invention. As shown in FIG. 2, the NC operating panel 10 for cutting cutting command and the command of the NC operating panel 10 are performed. NC main control unit 20 for determining whether or not, the PLC control unit 30 for controlling the input / output signal and output to the NC main control unit 20, and senses the state of the table clamp / unclamp A limit switch 40 for turning on / off a switch, an input signal unit 50 for receiving and outputting an on / off state of the limit switch 40, and an input signal of the input signal unit 50. A PLC input / output unit 60 which transmits to a PLC control unit 30 and outputs a control signal of the PLC control unit 30, and the PLC control unit 30. Output signal for receiving and outputting the control signal of the table clamp / unclamp of the through the PLC input / output unit 60 70 and, to be configured including tables solenoid 80 is turned on / off according to the output signal of the clamping / unclamping of the output signal (70), it will be described the operation and effect thereof in detail as follows.

NC 조작반(10)에서 절삭이송등 모든지령을 지령하면 NC 주제어부(20)는 지령된 신호를 받아서 수행하고, 피엘씨(PLC) 제어부(30)는 피엘씨(PLC) 입/출력부(60)를 통하여 입력신호(50) 및 출력신호(70)를 제어한 결과를 상기 NC 주제어부(20)에 알려주며, 상기 NC 주제어부(20)는 상기 피엘씨(PLC) 제어부(30)로 부터 전송받은 결과에 의해 상기 NC 조작반(10)의 지령에 대한 수행여부를 결정한다.When the NC control panel 10 commands all commands such as cutting feed, the NC main controller 20 receives the commanded signal and performs the command signal, and the PLC control unit 30 controls the PLC input / output unit 60. Informing the NC main controller 20 of the result of controlling the input signal 50 and the output signal 70 through the, the NC main controller 20 is transmitted from the PLC control unit 30 Based on the received result, it is determined whether to perform the command of the NC control panel 10.

또한, 상기 NC 조작반(10)에서 절삭이송 지령(G01)을 하였을때 피엘씨(PLC)제어부(30)의 테이블 클램프/언클램프의 판단조건에 따라 NC 주제어부(20)는 테이블 클램프일때 절삭이송 지령을 수행하고, 테이블 언클램프 일때 절삭이송 지령을 수행하지 않는데, 이때 상기 테이블 클램프 상태는 테이블 언클램프용 솔레노이드가 오프(Off)이고 테이블 클램프 감지용 리미트 스위치가 온(On)이며, 아울러 상기 테이블 언클램프 상태는 테이블 언클램프용 솔레노이드가 온(On)이고 테이블 클램프 감지용 리미트 스위치가 오프(Off)가 된다.In addition, when the cutting feed command (G01) in the NC control panel 10, the NC main control unit 20 is a cutting feed when the table clamp / unclamp according to the judgment condition of the table clamp / unclamp of the PLC control unit 30 The command is executed and the cutting feed command is not executed when the table is unclamped, wherein the table clamp state is a table unclamp solenoid is Off and a table clamp detection limit switch is On. In the unclamp state, the solenoid for the table unclamp is on, and the limit switch for the table clamp detection is off.

도 3은 본 발명 테이블 언클램프(Unclamp)시 절삭이송 방지 제어방법의 신호흐름도로서, 자동모드에서 절삭이송을 지령하여 가공상태로 들어가고 주축회전 상태를 감지하여 주축이 정지 상태일때 가공을 하지 않는 단계와(S1)(S2), 상기 주축이 회전 상태일때 테이블 클램프 상태를 확인하여 테이블 클램프 스위치가 온(On)이면 축을 이송시켜 공작물을 정상적으로 절삭을 하는 단계와(S3-S6), 상기 테이블 클램프 상태를 확인하여 테이블 클램프 스위치가 오프(Off)일때 축 이송속도가 0으로 되어 축이송이 정지되는 단계와(S7-S9), 이후 테이블 언클램프 상태의 알람이 발생되고 공작물 가공이 중지되는 단계(S10)(S11)로 이루어진다.3 is a signal flow diagram of a cutting feed prevention control method when the table is unclamped according to the present invention, in which a cutting feed is commanded in an automatic mode to enter a machining state and detect a spindle rotation state to prevent machining when the spindle is stopped And (S1) (S2), checking the table clamp state when the spindle is rotated, and if the table clamp switch is on, moving the shaft to cut the workpiece normally (S3-S6), and the table clamp state. When the table clamp switch is turned off, the axis feedrate becomes zero and the axis feed is stopped (S7-S9). Then, the alarm of the table unclamped state is generated and the machining of the workpiece is stopped (S10). (S11).

이상에서 상세히 설명한 바와 같이 본 발명은 현재의 테이블의 B축(회전축) 상태를 확인하여 테이블 언클램프 상태에서 절삭이송 지령시 축 이송이 안되게 함으로써,작업자의 오동작을 미연에 방지하고, 과부하에 의한 축 제어용 드라이브 유니트의 소손과 공작물의 불량품 발생 요소를 제거할 수 있는 효과가 있다.As described in detail above, the present invention checks the current state of the B-axis (rotary shaft) of the table to prevent the axial feed during the cutting feed command in the table unclamped state, thereby preventing a malfunction of the operator and preventing the shaft from being overloaded. It is effective in eliminating the burnout of the control drive unit and the generation of defective parts of the workpiece.

테이블이 클램프(Clamp) 또는 언클램프(Unclamp) 상태인지를 센서가 감지하여 테이블이 언클램프(Unclamp) 상태일때 절삭이송이 되는 것을 방지하는데 그 목적이 있다.Its purpose is to prevent the cutting feed when the sensor detects whether the table is clamped or unclamped and the table is unclamped.

Claims (2)

절삭이송의 지령을 하는 NC 조작반(10)과, 상기 NC 조작반(10)의 지령에 대한 수행여부를 결정하는 NC 주제어부(20)와, 입/출력 신호를 제어하고 상기 NC 주제어부(20)에 출력하는 피엘씨(PLC) 제어부(30)와, 테이블 클램프/언클램프의 상태를 감지하여 스위치를 온/오프 하는 리미트 스위치(40)와, 상기 리미트 스위치(40)의 온/오프 상태를 입력받아 출력하는 입력신호부(50)와, 상기 입력신호부(50)의 입력신호를 상기 피엘씨(PLC) 제어부(30)에 전달하고 그 피엘씨(PLC) 제어부(30)의 제어신호를 출력하는 피엘씨(PLC) 입/출력부(60)와, 상기 피엘씨(PLC) 제어부(30)의 테이블 클램프/언클램프의 제어신호를 상기 피엘씨(PLC) 입/출력부(60)를 통해 입력받아 출력하는 출력신호부(70)와, 상기 출력신호부(70)의 테이블 클램프/언클램프의 출력신호에 따라 온/오프 되는 솔레노이드(80)를 포함하여 구성된 것을 특징으로 하는 테이블 언클램프(Unclamp)시 절삭이송 방지 제어장치.NC main control unit 10 to command cutting feed, NC main control unit 20 to determine whether to perform the command of the NC control panel 10, and control the input / output signal and the NC main control unit 20 Inputs the PLC control unit 30 outputting to the control unit, a limit switch 40 for sensing the state of the table clamp / unclamp, and a switch on / off, and an on / off state of the limit switch 40 Receives and outputs the input signal unit 50 and the input signal of the input signal unit 50 to the PLC control unit 30 and outputs the control signal of the PLC control unit 30 The PLC input / output unit 60 and the control signal of the table clamp / unclamp of the PLC control unit 30 are controlled through the PLC input / output unit 60. An output signal unit 70 that receives and outputs an input, and a solenoid 80 that is turned on / off according to an output signal of a table clamp / unclamp of the output signal unit 70. The cutting feed prevention control device at the time of table unclamp (Unclamp) characterized in that it is configured to include. 자동모드에서 절삭이송을 지령하여 가공상태로 들어가고 주축회전 상태를 감지하여 주축이 정지 상태일때 가공을 하지 않는 단계와(S1)(S2), 상기 주축이 회전 상태일때 테이블 클램프 상태를 확인하여 테이블 클램프 스위치가 온(On)이면 축을 이송시켜 공작물을 정상적으로 절삭을 하는 단계와(S3-S6), 상기 테이블 클램프 상태를 확인하여 테이블 클램프 스위치가 오프(Off)일때 축 이송속도가 0으로 되어 축이송이 정지되는 단계와(S7-S9), 이후 테이블 언클램프 상태의 알람이 발생되고 공작물 가공이 중지되는 단계(S10)(S11)로 이루어지는 것을 특징으로 하는 테이블 언클램프(Unclamp)시 절삭이송 방지 제어방법.In the automatic mode, the cutting feed is commanded to enter the machining state and the spindle rotation state is sensed and the machining is not performed when the spindle is stationary (S1) (S2), and the table clamp is checked when the spindle is rotated. If the switch is On (On), feed the shaft to cut the workpiece normally (S3-S6), and check the table clamp state when the table clamp switch is Off (axis) feed rate is 0 to move the axis Method of preventing cutting movement during table unclamping, characterized in that it comprises a step of stopping (S7-S9), and then an alarm of the table unclamp state is generated and the work of the workpiece is stopped (S10) (S11). .
KR1019960057729A 1996-11-26 1996-11-26 Cutting anti-feed control device and method in the event of table unclamping KR100203801B1 (en)

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