Abstract: A machining program generating device and a wire-cut electric discharge machine that can shorten a machining time to machine multiple punch shapes. A distance L from one punch shape machining end position Pe to a next punch shape machining start position Ps is obtained. When the distance L is shorter than a predetermined value, the electric discharge machining is performed between the machining end position Pe and the machining start position Ps. When the distance L is equal to or longer than that a predetermined value, the wire is cut at the machining end position Pe and connected at the machining start position Ps to restart the electric discharge machining. By continuing the electric discharge machining when the distance L is shorter than the predetermined value, it is not necessary to carry out the processes of cutting and connecting the wire, and therefore the machining time is shortened.

Abstract: Analyzing blocks of a conversion source program one block by one block, a function directed by one or more blocks are extracted. Then one or more blocks in a conversion destination program, which correspond to the extracted function, is extracted. In this manner, the conversion source program is converted. The one or more blocks in the conversion source program and the one or more blocks in the conversion destination program, which correspond to the function, are displayed side by side on a screen so as to allow an operator to easily recognize the correspondence between them.

Abstract: When die machining including machining processes from a rough machining process to a finish machining process is carried out on the same workpiece along a closed machining path, each of the points equally dividing a length of the closed machining path by the repetition number of machining processes is defined as an approach point, so that the approach points are different from each other for each machining process. This makes it possible to avoid a concentration of the approach points at one points thereby preventing a dent from being formed at the approach point.

Abstract: When die machining including machining processes from a rough machining process to a finish machining process is carried out on the same workpiece along a closed machining path, each of the points equally dividing a length of the closed machining path by the repetition number of machining processes is defined as an approach point, so that the approach points are different from each other for each machining process. This makes it possible to avoid a concentration of the approach points at one points thereby preventing a dent from being formed at the approach point.

Abstract: A method of and an apparatus for determining a machining sequence of wire-cut electric discharge machining capable of easily changing a machining sequence in continuously machining a plurality of machining shapes. By making a sequence of a combination of a shape to be machined and a machining stage for the shape to be machined capable of being edited, the machining sequence in the case where the plurality of machining shapes are machined continuously is made easily changeable. In the method for specifying the machining sequence, two different modes are available. In a first mode, a plurality of standard machining patterns are prepared in advance, and the machining pattern is changed to form a desired machining pattern. In a second mode, a sequence of a combination of a plurality of shapes to be machined and the machining stages for a selected machining pattern is changed to form a desired machining pattern.

Abstract: A method of and an apparatus for determining a core-less machining shape, in which an attribute of core-less machining or contour machining is automatically designated to a machining shape created in advance, and a storage medium storing a core-less machining shape determining program. Programs for judging a size of a machining shape based on horizontal and vertical maximum dimensions, a diameter or a radius of a circle, a peripheral length, a width and an area are stored in an automatic programming device in advance. Programs to be executed are selected from the stored programs and a way of logical operation on results of judgment by the selected programs is designated.

Abstract: A cutting shape (Q1) is approximated to a polygonal shape (Q3). Division points are obtained by dividing line segments linking each vertex of this polygonal shape (Q3) with the cutting start point (PS1) by the same number. Corresponding division points on each line segment are then linked to obtained a plurality of polygonal closed paths (PH2-PH4). Here, the innermost closed path (PH2) is devised such that at least a portion thereof passes outside the cutting starting hole centered on the cutting start point (PS1).

Abstract: An area machining method capable of generating tool paths with no insufficient cut portion. First, a part profile contour indicating a profile contour for area machining and various machining conditions such as tool radius, depth of cut and the like are preset. Then the outmost offset contour and other subsequent offset contours are obtained, the outmost offset contour being offset along the part profile contour by an amount of the sum of a tool radius and finishing allowance, and the other subsequent offset contours being offset repeatedly from the outmost offset contour in sequence by an amount of depth of cut in the inside direction. Next, contours of insufficient cut portions which are produced between adjacent offset contours are obtained. Subsequently, tool paths each of which connects between offset contours and between an offset contour and a corresponding insufficient cut portion contour are outputted.

Abstract: An area machining method for efficiently hollowing out an area which contains a part of an outline of a workpiece is disclosed. An outward offset line is set outside the workpiece with a predetermined offset distance. Then a series of offset contours (i.e., the elements of the tool path) are defined within the region between the outward offset line and the final part contour. Since the offset distance to the outward offset line is set zero, all the offset contours share a segment of the outward offset line. Except for this common segment, the offset contours are given a cutting feedrate.