KR960021383A - Cutting path determination method in computer numerical control graphic method for cutting tools - Google Patents

Cutting path determination method in computer numerical control graphic method for cutting tools Download PDF

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Publication number
KR960021383A
KR960021383A KR1019940038343A KR19940038343A KR960021383A KR 960021383 A KR960021383 A KR 960021383A KR 1019940038343 A KR1019940038343 A KR 1019940038343A KR 19940038343 A KR19940038343 A KR 19940038343A KR 960021383 A KR960021383 A KR 960021383A
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South Korea
Prior art keywords
cutting
cutting tool
point
segments
segment
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KR1019940038343A
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Korean (ko)
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KR0176498B1 (en
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이충환
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김광호
삼성전자 주식회사
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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
    • B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • B23Q15/14—Control or regulation of the orientation of the tool with respect to the work
    • 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
    • G05B19/182—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 the machine tool function, e.g. thread cutting, cam making, tool direction control
    • 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
    • G05B19/4097—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 using design data to control NC machines, e.g. CAD/CAM

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

Abstract

본 발명 절삭 공구용 CNC(computer neumeric control) 그래픽법에 있어서의 가공 경로 결정 방법에 관한것으로, 상세하게는 선반등의 절삭 공구로 금속 재료를 절삭할 때 먼저 볼록점을 구하고, 이 붙록점으로부터과 그 공구의 날끝(tip nose)의 경사각에 따라 접촉점을 구하여 그 경로에 따라 재료를 절삭하는 절삭 공구용 CNC 그래픽법에 있어서의 가공 경로 결정 방법에 관한 것이다.The present invention relates to a method of determining a machining path in a computer tool (CNC) graphic method for a cutting tool. Specifically, when cutting a metal material with a cutting tool such as a lathe, a convex point is first obtained, A method for determining a machining path in a CNC graphic method for a cutting tool, which obtains a contact point according to an inclination angle of a tip nose of a tool and cuts a material along that path.

즉, 본 발명에 따른 절삭 공구용 컴퓨터 수치 제어 그래픽법에 있어서의 절삭 경로 결정 방법은 절삭되는 전체 형상을 직선 또는 원호의 세그먼트들로 분할하여 메모리에 기억시키고, 상기 세그먼트와 세그먼트사이의 직선들의 교점에서 또는 원호 상에서 볼록점들을 구한 다음, 상기 소정의 볼록점에서 그 다음 세그먼트에 절삭공구의 날끝 각도와 같은 각도를 가진 사선을 그어서 접촉점을 찾고, 그리고 상기 단계들을 세그먼트 마다 반복하면서 마지막 세그먼트인가를 판단하는 방법을 사용하여, 절삭 재료의 절삭 가공 가능한 구역을 쉽고 간단하게 결정할 수 있는 효과가 있다.That is, the cutting path determining method in the computer numerical control graphic method for cutting tools according to the present invention divides the entire shape to be cut into segments of straight lines or circular arcs and stores them in a memory, and intersects of the straight lines between the segments and the segments. Find convex points at or on an arc, then draw a diagonal line with the same angle as the cutting edge angle of the cutting tool on the next segment at the given convex point to find the contact point, and repeat the steps for each segment to determine if it is the last segment. Using this method, it is possible to easily and simply determine the cuttable area of the cutting material.

Description

절삭 공구용 컴퓨터 수치 제어 그래픽법에 있어서의 절삭 경로 결정 방법Cutting path determination method in computer numerical control graphic method for cutting tools

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 내지 제5도는 본 발명에 따른 절삭 공구용 CNC 그래픽법에 있어서의 가공 경로 결정 법의 예를 나타내는 설명도로서, 제2도는 전체 형상을 이루는 직선, 원호들을 각각 하나의 세그먼트로 메모리에 기억하는 것을 나타내는 설명도,2 to 5 are explanatory diagrams showing an example of a machining path determination method in the CNC graphic method for a cutting tool according to the present invention. FIG. 2 is a straight line and circular arcs forming the overall shape in one segment of the memory. The explanatory drawing which shows memorizing,

제3도는 전체 형상을 이루는 직선, 원호들을 각각 하나의 세그먼트로 메모리에 기억하기 위해 제1볼록점에서 제1접촉점을 찾는 방법을 나타내는 설명도,3 is an explanatory diagram showing a method for finding a first contact point at a first convex point in order to store a straight line and circular arcs forming an overall shape in a memory as one segment each;

제4도는 전체 형상을 이루는 직선, 원호들을 각각 하나의 세그먼트로 메모리에 기억하기 위해 제2볼록점에서 제2접촉점을 찾는 방법을 나타내는 설명도,4 is an explanatory diagram showing a method for finding a second contact point at a second convex point in order to store a straight line and circular arcs forming a whole shape in a memory in one segment, respectively;

제5도는 두 탄젠트 벡트의 크로스 프로덕트(楨)한 값이 음일 경우의 접촉점 결정 방법을 나타내는 설명도,5 is an explanatory diagram showing a method of determining a contact point when the cross-product value of two tangent vectors is negative;

제13도는 본 발명에 따른 CNC 그래픽법에 있어서의 가공 경로 결정 방법을 사용하는 선반의 제어 장치의 블럭도이다.Fig. 13 is a block diagram of a lathe control device using the machining path determining method in the CNC graphic method according to the present invention.

Claims (4)

절삭되는 전체 형상을 직선 또는 원호의 세그먼트들로 분할하여 메모리에 기억시키는 단계; 상기 세그먼트와 세그먼트 사이의 직선들의 교점 또는 원호 상에 절삭 공구의 날끝 각도와 같은 경사선을 근접시켰을 때 가장 먼저 접촉되는 볼록점들을 구하는 단계; 상기 소정의 볼록점에서 그 다음 세그먼트에 절삭 공구의 날끝 각도와 같은 각도를 가진 사선을 그어서 접촉점을 찾아가는 단계; 그리고 상기 단계들을 세그먼트 마다 반복하면서 마지막 세그먼트인가를 판단하는 단계; 를 포함하는 것을 특징으로 하는 절삭 공구용 컴퓨터 수치 제어 그래픽법에 있어서의 절삭 경로 결정 방법.Dividing the entire shape to be cut into segments of straight lines or circular arcs and storing them in a memory; Finding convex points that are first contacted when an oblique line, such as a blade tip angle of a cutting tool, is approached on an intersection or a circle of straight lines between the segments; Drawing an oblique line having an angle equal to the blade tip angle of the cutting tool from the predetermined convex point to the next segment to find the contact point; And repeating the steps for each segment and determining whether it is the last segment; Cutting path determination method in a computer numerical control graphics method for a cutting tool comprising a. 제1항에 있어서, 상기 세그먼트와 세그먼트 사이의 직선들의 교점들에서의 두 직선의 벡터들의 크로스프로덕트값이 양이면 상기 교점들이 볼록점인 것으로 판단하는 것을 특징으로 하는 절삭 공구용 컴퓨터 수치 제어 그래픽법에 있어서의 절삭 경로 결정 방법.The method of claim 1, wherein if the cross-product value of the vectors of the two straight lines at the intersections of the segments and the straight lines between the segments is positive, the intersection points are determined to be convex. Cutting path determination method in the process. 제1항에 있어서, 상기 원호 세그먼트에서 접촉을 구하기 위한 접촉선의 교차점이 두 개 생길 경우 이들 교점에서의 두 선의 벡터의 크로스 프로덕트값이 양이면 상기 교점에서 가까운 쪽의 교점을 접촉점을 판단하고, 음이면 상기 교점에서 먼 쪽의 교점을 접촉점으로 판단하는 것을 특징으로 하는 절삭 공구용 킴퓨터 수치 제어 그래픽법에 있어서의 절삭 경로 결정 방법.The method of claim 1, wherein when two intersection points of contact lines for contact in the circular arc segment are generated, if the cross-product value of the vectors of two lines at these intersection points is positive, the contact point is determined as the intersection point closer to the intersection point. A cutting path determination method in a Kim computer numerical control graphic method for a cutting tool, wherein an intersection point far from the intersection point is determined as a contact point. 제1항에 있어서, 상기 원호 세그먼트 상의 볼록점은 이 원호 세그먼트 상에 상기 절삭 공구의 날끝각과 같은 각을 가지는 사선의 접선을 그어, 이 접선의 접점을 볼록점으로 판단하는 것을 특징으로 하는 절삭 공구용 컴퓨터 수치 제어 그래픽법에 있어서의 절삭 경로 결정 방법.The cutting tool according to claim 1, wherein the convex point on the arc segment draws a tangent of an oblique line having an angle equal to the blade tip angle of the cutting tool on the arc segment, and determines the contact point of the tangent as a convex point. A cutting path determination method in a computer numerical control graphic method. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940038343A 1994-12-28 1994-12-28 Cutting path setting method in the computerized numerical control graphic method for cutting tool KR0176498B1 (en)

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KR1019940038343A KR0176498B1 (en) 1994-12-28 1994-12-28 Cutting path setting method in the computerized numerical control graphic method for cutting tool

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KR0176498B1 KR0176498B1 (en) 1999-04-01

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