JPH086621A - Machining information generating device - Google Patents

Abstract

PURPOSE:To automatically optimize the peripheral shape of a machining axis in consideration of the size, weight, etc., of the peripheral shape of the machining axis by correcting the tool projection quantity of the machining axis based on the work information and machining axis information without causing a work and a constituent component of the machining axis to interfere with each other at a machining end position. CONSTITUTION:Based on the work information stored in a storage means for a work information file 20 and machining axis information stored in a storage means for a machining axis information file 29, the tool projection quantity correcting means consisting of a component interference verification part 31 and a tool projection quantity correction part 32 corrects the tool projection quantity of the machining axis so that the work and the constituent component of the machining axis do not interfere with each other at the machining end position. Consequently, the interference between the work and the constituent component of the machining axis at the machining end position can be evaded and the peripheral shape of the machining axis can be optimized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machining information creating apparatus using a CAD / CAM system, and particularly, systematization has been made at a design study level in consideration of peripheral shape and weight of a machining shaft assigned to a gear head. It is a thing.

[0002]

2. Description of the Related Art In recent years, with the development of computers and graphic displays and their peripheral technologies, CAD (computer-aided design) / CAM in which a designer or the like uses a computer (computer) with graphic information as a medium to perform design to processing. (Computer-aided production) system has been put into practical use and its range of application is expanding.

As one application example thereof, for example, there is a CAD / CAM system for studying the machining process, and in the conventional system, the positional relationship between the gear head and the machining axis, the cutting conditions, the cutting power, and the workable time. The machining axis is optimized in consideration of such factors.

[0004]

However, in the conventional system, only the specification examination level as described above is taken into consideration. For example, the shape and size of the peripheral portion of the machining shaft assigned to the gear head, No consideration is given to the level of design consideration such as the weight of the turret surface (in the case of a turret machine). Therefore, if a design change occurs in the grouping settings, etc., the designer must calculate the gear head shape so that the work and the machining axis do not interfere with each other, and calculate for the weight check of the turret surface. It takes time and time for design study. Moreover, there is no guarantee in the accuracy of the calculation. Further, conventionally, the original position of the machine was also calculated by the designer, so there is the same problem as described above.

The present invention has been made in view of the above problems of the prior art, and when performing the grouping of the machining axes, the dimension of the peripheral shape of the machining axis, the weight, etc. are taken into consideration and the automatic machining is performed. It is an object of the present invention to provide a machining information creation device capable of automatically optimizing the peripheral shape of a machining axis and automatically determining the origin coordinates of a machine.

[0006]

In order to achieve the above object, a machining information creating apparatus of the present invention is a machining information creating apparatus for correcting a peripheral shape of a machining axis assigned to a gear head, and is provided with information about a workpiece. Workpiece information storage means to be stored, machining axis information storage means to store information on the machining axis assigned to the gear head, and the workpiece and the component parts of the machining axis at the machining end position based on the work information and the machining axis information. The tool protrusion amount correcting means for correcting the tool protrusion amount of the machining axis is configured so as not to interfere with each other.

Further, based on the work information and the machining axis information, there is provided a spindle protrusion amount correction means for correcting the spindle protrusion amount of the machining axis so that there is no step between the front cases of the machining axes assigned to the same gear head. Is configured.

Further, machine specification storage means for storing machine specifications, weight data storage means for storing weight data of components of the machining axis, machining axis information, machine specifications,
And the weight data, the gear head weight calculation means for calculating the weight of the gear head of the machine and the weight of each gear head are added to calculate the total weight of all the gear heads of the machine, and the total weight is within a predetermined allowable value. It has a gear head total weight verification means for verifying whether or not it has subsided.

When the machine is a turret machine, the weight difference between the turret surfaces at the diagonal positions is calculated based on the calculated gear head weight data, and whether the weight difference is within a predetermined specified value or not. It has a weight balance verification means for verifying.

The above apparatus is further provided with a machine original position coordinate calculating means for calculating the coordinate value of the original position of the machine with respect to the work based on the work information, machining axis information, and machine specifications. .

Preferably, the tool protrusion amount correction means calculates the distance between the work and the component of the processing axis at the processing end position based on the work information and the processing axis information, and the distance is defined by a predetermined value. A means for comparing with a value, and a means for correcting the tool protrusion amount of the machining axis so that the distance between the work and the component becomes equal to the specified value when the interval is smaller than the specified value. It comprises means for comparing the tool protrusion amount with a predetermined allowable value, and means for canceling the current machining axis assignment result when the corrected tool protrusion amount exceeds the allowable value.

[0012] Preferably, the spindle protrusion amount correcting means detects the machining axis whose front case position is closest to the machining surface of the workpiece at the machining end position based on the workpiece information and the machining axis information, and the detected machining. By selecting a machining axis whose front case position exists within the range of the level difference correction value that is input from the front case position of the axis, the machining axis that is the correction target is set and A means for correcting the spindle protrusion amount of the correction target machining axis so that the front case position detects the machining axis farthest from the machining surface and aligns the detected machining axis with the front case position of the detected machining axis, and the corrected spindle protrusion amount is predetermined. Means for comparing with the allowable value of, and when the corrected spindle protrusion amount exceeds the allowable value, by interactive operation, And a way to exclude machining axis outside volume value from the correction target is constructed.

For simplification of calculation, it is preferable that the gear head weight calculating means calculates the weights of the front case and the gear case of the machining shaft based on the area of the machining shaft mounting surface of the gear head.

Preferably, the gear head total weight verification means adds the weights of the gear heads of the machine to calculate the total weight of all the gear heads of the machine, and compares the calculated total weight with a predetermined allowable value. And a means for canceling the current machining axis assignment result when the total weight exceeds the allowable value.

Preferably, the weight balance verification means determines whether or not the machining axis is assigned to the turret surface in the diagonal position, and the machining axis is assigned to the turret surface in the diagonal position. , Based on the calculated gearhead weight data,
Means for calculating a weight difference from the turret surface in a diagonal position, means for comparing the calculated weight difference with a predetermined specified value,
When the weight difference exceeds the specified value, a means for canceling the machining axis assignment result of either one of the turret surfaces by interactive operation, and no machining axis assignment for the turret surface in the diagonal position Has a means for setting an equivalent weight on the turret surface which has not been allocated yet.

Preferably, the machine original position coordinate calculating means calculates the length of the machining axis assigned to the gear head based on the machining axis information, and from this result, a means for detecting the longest machining axis and a longest machining axis. Means for determining the original position of the machine so that the tool tip of the machining axis is located at a position that is away from the machining surface of the work by a predetermined air cut amount, and the machine original position for the work based on the work information and machine specifications. And a means for calculating the coordinate value of.

[0017]

In the present invention thus constituted, the tool protrusion amount correction means is based on the work information stored in the work information storage means and the machining axis information stored in the machining axis information storage means. Then, the tool protrusion amount of the machining axis is corrected so that the workpiece and the component of the machining axis do not interfere with each other at the machining end position. As a result, the interference between the workpiece and the components of the machining axis at the machining end position is avoided, and the peripheral shape of the machining axis is optimized.

In a preferred configuration, the tool protrusion amount correction means calculates the distance between the workpiece and the component of the machining axis at the machining end position based on the work information and the machining axis information, and compares the result with a predetermined prescribed value. To do. Then, when the obtained distance is smaller than the specified value, the tool protrusion amount of the machining axis is corrected so that the distance between the work and the component becomes equal to the specified value, and the result is compared with a predetermined allowable value. When the correction tool protrusion amount exceeds the allowable value, the current machining axis assignment result is canceled and the assignment result is waited for again.

In the apparatus having the spindle protrusion amount correction means, the spindle protrusion amount correction means eliminates the step between the front cases of the processing shafts assigned to the same gear head based on the work information and the processing shaft information. , Correct the amount of spindle protrusion of the machining axis. As a result, there is no step between the front cases of the processing shafts assigned to the same gear head, and the manufacturing cost of the machine can be reduced.

In a preferred configuration, the spindle protrusion amount correcting means detects the machining axis whose front case position is closest to the machining surface of the workpiece at the machining end position based on the workpiece information and the machining axis information, and detects the machining axis of the detected machining axis. The machining axis to be corrected is set by selecting the machining axis having the front case position within the range of the level difference correctable value input from the front case position. Then, the machining axis whose front case position is farthest from the machining surface is detected from the machining axis to be corrected, and the spindle protrusion amount of the machining axis to be corrected is corrected so as to be aligned with the front case position of the detected machining axis. The result is compared with a given tolerance. When the corrected spindle protrusion amount exceeds the allowable value, the machining axis outside the allowable value is excluded from the correction target by the interactive operation.

Further, in the apparatus having the weight check function, the gear head weight calculating means is stored in the machining axis information, the machine specifications stored in the machine specification storing means, and the weight data storing means. The weight of the gear head of the machine is calculated based on the weight data, and the gear head total weight verification means adds the weights of the respective gear heads to calculate the total weight of all the gear heads of the machine, and the total weight is a predetermined allowable value. Verify that you are inside.
As a result, problems such as the load on the motor that drives the machine and the power required to move the machine can be cleared, the accuracy of design consideration is improved, and the reliability and durability of the machine are improved.

In the preferred arrangement, the gearhead total weight verification means adds the weights of each gearhead of the machine to calculate the total weight of all gearheads of the machine and compares the result to a predetermined tolerance. When the calculated total weight exceeds the allowable value, the current machining axis allocation result is canceled and the allocation result is awaited again.

In an apparatus in which the machine is a turret machine and has weight balance verification means, the weight balance verification means calculates the weight difference between the turret surfaces at diagonal positions based on the calculated gear head weight data, Verify that this weight difference is within the specified limits.
As a result, the weight balance of the turret surface is checked, and there are no problems such as a poor balance when the turret machine turns, or the machining turret surface slightly deviates up and down during processing, and it is possible to ensure a predetermined accuracy.

In a preferred configuration, the weight balance verification means determines whether or not the machining axis is assigned to the turret surface in the diagonal position, and the machining axis is assigned to the turret surface in the diagonal position. If so, the weight difference from the turret surface at the diagonal position is calculated based on the calculated gear head weight data, and the result is compared with a predetermined specified value. Then, when the calculated weight difference exceeds the specified value, the machining axis allocation result of either one of the turret surfaces is canceled by an interactive operation, and the allocation result of the turret surface is awaited again. If the machining axis is not assigned to the turret surface in the diagonal position, set an equivalent weight for the turret surface that has not been assigned and wait until the turret surface is assigned. .

Further, in the apparatus having the machine original position coordinate calculating means, the machine original position coordinate calculating means is based on the work information, the machining axis information, and the machine specifications, and the coordinates of the original position of the machine with respect to the work. Calculate the value. This will automatically provide the machine's in-situ coordinate values, making it easier to address assignment considerations or changes.

In a preferred configuration, the machine original position coordinate calculating means calculates the length of the machining axis assigned to the gear head based on the machining axis information, and detects the longest machining axis based on this result. Then, after determining the original position of the machine so that the detected tool tip of the longest machining axis will be at a position separated from the machined surface of the workpiece by the predetermined air cut amount, based on the workpiece information and machine specifications, The coordinate value of the original position of the machine is calculated.

[0027]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a diagram showing an example of hardware constituting the processing information creation device of the present invention.

This device has a graphic display device 1 which is used as an input device by a designer in place of a conventional drawing board or pencil, as in the structure of a general CAD system.
0 (hereinafter referred to as display), light pen 1
1, a keyboard 12, and a tablet 13 (hereinafter, the keyboard 12 will be used as a representative of the input device for simplification).
Data and commands can be input to the computer 14 by operating the keyboard 12 or the like. An external storage device 15 is connected to the computer 14, and processing results and data of the computer 14 are stored therein. Further, an automatic drafting machine (plotter) 16 and a printer 17 are connected to the computer 14 as output devices, and together with the display 10, the machining axis grouping status and the machining axis peripheral shape (tooling layout) as required. It is possible to draw or display various drawings such as, and print or display data and calculation results.

FIG. 2 is a functional block diagram of the above apparatus.
The machining information creation device of the present invention automatically determines the optimum peripheral shape of the machining axis when performing grouping of the machining axis on the CAD system, and also coordinates of the origin (machining start position) of the machine with respect to the workpiece. It has a function of automatically calculating a value, for example, the work information file 2
0, the machine specification file 21, the weight data file 22, the processing information file 23, and the process division determination unit 24.
A process division determination file 25, a process division information file 26, a machining axis information creation unit 27, a tooling information file 28, a machining axis information file 29, a grouping execution unit 30, a component interference verification unit 31, Tool protrusion amount correction unit 32, spindle protrusion amount correction unit 33, turret weight verification unit 34, machine original position coordinate calculation unit 35
And a control unit (not shown) that controls all of them, which are internally connected to each other via an input / output interface 36, and an external input device (keyboard 12 or the like) or output device (display). 10, printer 17, plotter 16, etc.).

The work information storage means is a work information file 20, the machining axis information storage means is a machining axis information file 29, and the tool protrusion amount correction means is a component interference verification section 31, a tool protrusion amount correction section 32, and a spindle protrusion amount correction. The means is a spindle protrusion amount correcting unit 33, the machine specification storage means is a machine specification file 21, the weight data storage means is a weight data file 22, the gear head weight calculation means, the gear head total weight verification means, and the weight balance verification means are turret weights. The verification unit 34 and the machine original position coordinate calculation means are respectively configured by a machine original position coordinate calculation unit 35.

The work information file 20 is a file in which information about the work, such as the shape data of the work and the position data of the machined portion (machined hole and machined surface), is registered. The shape data of the work is given by, for example, a three-dimensional solid model or a 2.5-dimensional model in which height data is added to two-dimensional figure data, and the position data of the processed portion is relative to a predetermined reference position. It is set in the form of coordinate values. This work information is
By the operator via the input device 12 or another C
It is input from the AD system.

The machine specification file 21 registers machine specifications, for example, in the case of a turret machine, the number of turret surfaces (4 or 6), the area of the turret surface, the size of the turret surface, and the like. It is a thing. The dimension of the turret surface is set, for example, as the length from the center of the turret surface to the edge. These machine specifications are input in advance by the operator via the input device 12.

The weight data file 22 includes each component (for example, tool, holder, spindle,
Bearing, front case, etc.) weight data is registered for each model number. In the weight data file 22, the approximate weights of the front case and the gear case are registered for each area of the turret surface. Further, a predetermined specified value for determining the quality of the weight balance of the turret surfaces in diagonal positions and the maximum allowable value of the total weight of all the turret surfaces (hereinafter, simply referred to as an allowable value) are also registered. These data are also input in advance by the operator via the input device 12.

The machining information file 23 includes machining information for each machining site, for example, machining site name, machining type (for example, drilling, drill chamfering, reaming, tapping, etc.), machining shape (for example, blind hole drill). In the case of machining, the machining diameter, depth, tip angle, pre-machining information (for example, prepared hole diameter), machining direction (for example, XY direction with respect to hole reference position), machining priority, etc. are registered. The processing information is written according to a predetermined processing information writing pattern, and is input by the operator via the input device 12. For example, in the case of drilling a blind hole, the processing information notation pattern is as follows. Information such as machining accuracy, machining tolerance, and machining roughness can be added to each of the above elements. Further, in the case of combined machining in which several machining types are combined, the machining information elements are combined and described in the order of machining.

The process division decision unit 24 automatically divides the machining process based on the machining information registered in the machining information file 23. A process division determination file 25 is connected to the process division determination unit 24. The process division determination file 25 includes a plurality of machining process division methods with priorities for each machining part name, and divisions. Processed shape (parametric shape) in each subsequent process
And are registered in advance. Process division determination unit 24
Reads the machining site name, machining type, and final machining shape (dimension) from the machining information file 23 for each machining site, and based on the machining site name, the process division decision file 2
5, the machining process is automatically divided according to the priority order, and the dimensions of the machining shape are automatically set based on the final machining shape (dimension) for each divided process. It has a function to automatically set the type of tool used. The obtained result is stored in the dedicated process division information file 26.

The machining axis information creating section 27 automatically determines information regarding the components of the machining axis (for example, tools, holders, spindles, bearing caps, front cases, etc.) for each of the divided processes, and determines the machining axis. It is built automatically. A tooling information file 28 is connected to the machining axis information creating unit 27. The tooling information file 28 is information (specification, information) regarding an optimum tool for processing information (processing shape dimension / accuracy) and other processing axis components (holder, spindle, bearing cap, front case, etc.) attached to the tool.
(Shape data etc.) is registered in advance for each model number. The machining axis information creation unit 27 is roughly divided into a functional determination unit and a tooling information creation unit. The tool determination unit reads the machining information (machining shape, tool type) of each divided process from the process division information file 26, and while referring to the tooling information file 28,
It has a function to automatically determine the optimum tool to use for each division process. Further, the tooling information creation unit refers to the tooling information file 28 based on the determined model number of the tool to be used, and refers to the tooling information file 28, and other parts (holder, spindle, bearing cap, front case, etc.) that constitute the machining axis. Has a function of automatically determining. The result of the machining axis information creating unit 27 is stored in the machining axis information file 29.

FIG. 3 is a sectional view showing an example of the constructed machining axis. In the figure, the processing shaft is constructed by inserting the tool 40 into a spindle 41 and fixing it with a holder 42, and the spindle 41 is attached to a front case 44 via a bearing 43. A bearing cap 45 is attached to the front surface of the front case 44. A V ring 46 and a V ring plate 47 are mounted on the front surface of the bearing cap 45 in order to prevent cutting oil and chips from entering the bearing cap 45.

The machining axis information file 29 is information on the machining axis, in other words, components of the machining axis (tool 40, holder 42, spindle 4) for each divided process.
1, the bearing cap 45, the front case 44, etc.) are stored. The machining axis information includes, for example, tool specifications (type, diameter, length, etc.), tool tip length, tool protrusion amount, and the like regarding the tool 40, and information related to the holder 42 includes, for example, holder specifications (holder height). Information about the spindle 41, for example, the spindle specifications, the amount of protrusion of the spindle, etc., and the information about the bearing cap 45 includes, for example, bearing cap shape data (including the bearing cap height). The information on the front case 44 includes, for example, front case shape data (including the front case height). Depending on the type of machine, information about the V-ring 46, the V-ring plate 47 (see FIG. 3), the air cover, etc. may also be added.
The processing axis information is given as the processing result of the processing axis information creating unit 27 as described above. Also, some of these information (tool protrusion amount and spindle protrusion amount) are
As will be described later, the peripheral shape of the machining axis is automatically corrected so as to be optimized.

In the machining axis information file 29, in addition to the above machining axis information, for example, the holder 42, the spindle 4 and the like.
Predetermined values (regulated values) for defining the distance to the work at the processing end position are set and registered for the bearing cap 45, the front case 44, and the like. These specified values are the minimum clearances required between the workpiece and the machining axis component to prevent interference between the workpiece and the machining axis component, and the clearance of the machining axis component relative to the workpiece. It is provided in order to determine how much access is allowed. Data about the specified value is set and registered in the system in advance, or
Alternatively, each time, it is keyed in by the operator in the preprocessing stage. Also, the tool 40 and the spindle 41
However, the maximum allowable values of the tool protrusion amount and the spindle protrusion amount (hereinafter, simply referred to as allowable values) are set and registered in advance from the viewpoint of machining accuracy (the user cannot input or change them). These allowable values are determined by the processing diameter, the processing type, and the like. Further, the processing axis information file 29 stores the result of the grouping execution unit 30 described later and further the height of the gear case. The height of the gear case differs depending on the number of stages when connecting the gears from the motor shaft to the machining shaft based on the result of the grouping, and therefore depends on each turret surface. It is keyed in by an operator at a predetermined stage.

Further, in the present embodiment, the tool tip length stored as tool-related information in the machining axis information file 29 is calculated from the tool diameter and the tip angle during the machining axis construction processing by the machining axis information creating section 27. , Calculated. The tool protrusion amount and the spindle protrusion amount, which are also stored in the machining axis information file 29, are set to standard values registered in advance in the tooling information file 28, for example, during the machining axis construction process. There is.

The grouping executing section 30 examines which machining axis is to be assigned to which gearhead of which machine by an interactive operation with the operator. Taking a turret machine as an example, which machining axis is
This is to consider which turret machine should be assigned to which turret surface. In addition, the grouping execution unit 30
Has an editing function of canceling a machining axis once assigned to the gear head (turret surface) and assigning it to another gear head (turret surface). The result of the grouping execution unit 30 is stored in the machining axis information file 29 as described above. In the following, a turret machine will be described as an example.

FIG. 4 is a schematic diagram showing an example of the structure of the processing shaft. In the figure, "40" is a tool, "42" is a holder, "41" is a spindle, "44" is a front case, "48" is a gear case, and "49" is a turret surface of a turret machine. As described above, from the viewpoint of preventing interference, it is desirable that there is a gap of a certain value (specified value) or more between the workpiece and the peripheral shape of the machining axis at the machining end position. Therefore, for example, in the case of the machining axis shown in FIG. 4, the workpiece and the holder 42 (in this case, since the holder 42 and the spindle 41 have the same diameter, the interference check between the workpiece and the spindle 41 is not necessary), and It is necessary to check the interference with the front case 44.

In the case of the machining axis shown in FIG. 3,
A bearing cap 45 is attached to the front surface of the front case 44, and a V ring 46 and a V ring plate 47 are provided in front of the bearing cap 45. Since the diameters are different, the work, the V ring 46, and the V ring plate are provided. It is necessary to carry out interference check between 47 and the bearing cap 45. Also, regarding the step relationship between the holder 42 and the spindle 41, see FIG.
In addition to the case where the diameters of both are the same and there is no step like the machining shaft shown in FIG.
When the diameter of 2a is larger than the diameter of the spindle 41a,
As shown in FIG. 5 (B), the diameter of the holder 42b may be smaller than the diameter of the spindle 41b. In the latter case, it is also necessary to check the interference between the work and the spindle 41b. In this way, which component needs to be checked for interference with the work differs depending on the peripheral shape of the machining axis. In the present embodiment, for simplification, the interference check between the work and the holder 40 and the work and the front case 44 will be considered only by taking the machining axis of FIG. 4 as an example.

When the machining axis is at a predetermined machining end position, the component interference verification section 31 checks the interference between the work and the machining axis constituent parts excluding the tool (whether the interval between them is equal to or more than a specified value). It is a thing. Specifically, for each machining axis assigned to the turret surface by the grouping process, the distance between the work and the component is calculated and compared with the specified value registered in the machining axis information file 29 to calculate. Detects a machining axis whose interval is smaller than the specified value. In addition,
The interval is given as a negative value (negative value), for example, when the workpiece and the component actually interfere (that is, overlap).

The method of calculating the distance between the work and the component is
For example: Workpiece shape data is 3
If it is given as a three-dimensional solid model, a well-known interference examination calculation is executed using the three-dimensional solid model of the machining axis, and if it actually interferes, select the part with the largest interference range, The value in the interference range is negatively set to the above interval and compared with the specified value. For example, as shown in FIG. 6, the work 50 and the holder 42 are actually at two positions (B
And C), since the interference part of C is larger, the value C of the interference range is made negative to obtain the above interval and compared with the specified value. On the other hand, when the shape data of the work is given by the 2.5-dimensional model, since the height data of the surface of the work is given, the interval is calculated using this. For example, in FIG. 7, in the case of the 2.5-dimensional model, position information (height data) of H1 to H4 is given with respect to the work surface, and when machining the FR surface, FR1 registered as the FR surface is used. And FR2 and the position G of the holder 42 calculated from the machining depth C, the tool protrusion amount C, and the machining hole reference position (registered in the form of coordinate values from the workpiece reference position). Based on this, the presence or absence of interference between the workpiece 50 and the holder 42 is checked, the interference range (= H1 −G) is obtained from the H1 value and the G value, and this value is made a negative value to obtain the above interval and compared with the specified value.

The tool protrusion amount correction unit 32 has a machining axis in which the distance between the workpiece and the machining axis component (in this embodiment, the holder 42 and the front case 44) is smaller than the specified value registered in the machining axis information file 29. On the other hand, the tool protrusion amount is corrected so that the distance between the two becomes a specified value. Further, as described above, the tool protrusion amount is not allowed to exceed a predetermined value (allowable value) due to a problem in processing accuracy. Therefore, as compared with the allowable value registered in the processing axis information file 29, It also has a function to check whether the corrected tool overhang is within the allowable value. When the correction tool protrusion amount exceeds the permissible value, the grouping result is canceled via the grouping execution unit 30 and the operator is notified to that effect. The corrected tool protrusion amount that has been checked is stored in the machining axis information file 29, and the data of the tool protrusion amount is updated to the correction value.

The method of correcting the tool protrusion amount is specifically as follows. First, the case of the work 50 and the holder 42 will be described with reference to FIG. At this time, when the distance between the workpiece 50 and the holder 42 is smaller than the specified value at the machining end position, the distance between the workpiece 50 and the holder 42 is simply narrow (see the upper diagram of FIG.
2 and 2 actually interfere with each other, that is, they overlap each other (see the upper diagram of FIG. 8B). In either case, the tool protrusion amount is corrected so that the distance between the work 50 and the holder 42 becomes equal to the specified value according to the following formula 1 (see FIGS. 8A and 8B). P '= P + M = P + (D1-S1) ... Equation 1 where P': Tool protrusion amount after correction P: Tool protrusion amount before correction M: Correction component D1: Specified value S1: Calculated interval (actually The case of the work 50 and the front case 44 will be described below with reference to FIG. 9. Also at this time, when the distance between the work 50 and the front case 44 is smaller than the specified value at the machining end position, the case where the distance between the work 50 and the front case 44 is simply small (not shown) is actually the work 50 and the front case 44. In some cases (see the upper diagram of FIG. 9). In either case, the tool protrusion amount is corrected so that the distance between the work 50 and the front case 44 becomes equal to the specified value according to the following expression 2 (see FIG. 9). P '= P + M = P + (D2-S2) ... Equation 2 where P': Tool protrusion amount after correction P: Tool protrusion amount before correction M: Correction amount D2: Specified value S2: Calculated interval (actually (If it interferes, it will be negative.) If the machining axis that has been corrected here has already been corrected in the tool protrusion amount in the preceding process, the previously corrected tool protrusion amount The value with the modification added becomes the new tool protrusion amount. Of course, the latest correction value P'is checked to see if it is within the allowable value.

The spindle protrusion amount correction unit 33 corrects the spindle protrusion amount so that there is no step at the front case position (the position on the front surface of the front case 44) with respect to the processing axis in the same grouping. The peripheral shape of each machining axis assigned to the turret surface by the grouping process is already determined when the machining axis is constructed by the machining axis information creating unit 27 and is stored in the machining axis information file 29. If the case positions are different in each machining axis, the manufacturing cost of the machine is extra. Therefore, it is desirable that the front case positions of the machining axes are aligned as much as possible. Spindle protrusion amount correction unit 33
In response to such a request, the work of automatically aligning the front case position of the machining axis assigned to the turret surface is automatically performed. Similarly to the tool protrusion amount, the spindle protrusion amount is not allowed to exceed a predetermined value (allowable value) due to problems in machining accuracy, so compare it with the allowable value registered in the machining axis information file 29. It also has a function of checking whether the corrected spindle protrusion amount is within the allowable value. If the corrected spindle protrusion amount exceeds the allowable value, the operator is notified to that effect. The corrected spindle protrusion amount that has been checked is stored in the machining axis information file 29, and the data of the spindle protrusion amount is updated to the correction value.

The method of correcting the spindle protrusion amount is specifically as follows. First, the machining axis whose front case position is closest to the machining surface of the workpiece 50 is detected. The detection method is as follows. For each machining axis, necessary data is read from the machining information file 23 and the machining axis information file 29, the distance I between the machining surface of the workpiece 50 and the front case position of the machining axis is calculated, and machining with the smallest I value is performed. Select the axis. Here, the distance I is calculated by the following Expression 3 (see FIG. 10). I = (P−C) + Q + R ... Equation 3 where C: machining depth P: tool protrusion amount Q: holder height R: spindle protrusion amount Then, in the position data of the front case position of each machining axis at the machining end position. Based on the detected machining axis front case position, select all machining axes whose front case position is within the range of values (step correction possible value) set appropriately by the operator, and correct them for spindle protrusion amount correction. And Then, of the machining axes that are subject to correction, the front case position of the other machining axis should be aligned with the front case position of that machining axis, with the machining axis that is farthest from the machining surface as the reference. Correct the spindle protrusion amount of the target machining axis. Specifically, the step difference of the front case position between the reference machining axis and the other correction target machining axis is calculated, and the calculated step difference is added to the spindle protrusion amount of the other correction target machining axis. To do. The step-correctable value is keyed in by the operator via the keyboard 12.

The above will be described in detail with reference to FIG.
Four machining axes S1 assigned to the same turret surface
It is assumed that S4 is at the machining end position as shown on the left side of FIG. At this time, the machining axis closest to the machining surface is the S1 axis, and the machining axes that have the front case position within the range of the level difference correctable value E input from the front case position of the S1 axis are the S2 axis and the S3 axis. is there. Therefore, S1
Axis, S2 axis, S3 axis are the correction target. And S1 axis ~
Of the S3 axes, the front case position is farthest from the machined surface is the S2 axis, so that the front case positions of the S1 axis and S3 axis should be aligned with the front case position of this S2 axis. Correct the protruding amount of the spindle. At this time, if the pre-correction spindle protrusion amounts of the S1 to S3 axes are R1, R2, and R3, and the corrected spindle protrusion amounts are R1 ', R2', and R3 ', respectively, the following equations 4 to 6 are obtained. To establish. R1 '= R1 + a ... Equation 4 R2' = R2 ... Equation 5 R3 '= R3 + b ... Equation 6 However, a: the step difference between the front case positions of the S1 and S2 axes b: the front of the S2 and S3 axes Step amount of case position Here, after correction, the spindle protrusion amount R1 'to R3'
Is not allowed to exceed a predetermined tolerance, as described above. The result of the correction is as shown in the right diagram of FIG.

The turret weight verification unit 34 has a function of calculating the weight of each turret surface of the turret machine, checking the weight balance, and checking whether the total weight of the turret surface is within a predetermined allowable value. have. If the weight of the turret surface is significantly different on each turret surface, the turret machine may be out of balance when turning, or the machining turret surface may slightly deviate vertically during machining. It may not be possible to take it out (see FIG. 12).
If the total weight of the turret surfaces exceeds the predetermined allowable value (maximum total weight), the load on the motor that rotates the turret machine and the movement of the turret machine (fast feed, cutting feed, etc.) There is a possibility that a problem may occur due to the power when performing the operation. Therefore, by considering the weight of the turret as in the present invention, it is possible to improve the accuracy of design examination (grouping).

The calculation method of the weight of each turret surface is as follows.
All the machining axes assigned to the target turret surface are searched from the machining axis information file 29, the weight data of each component constituting the machining axis is read from the weight data file 22 based on the model number, and these are read. Calculate the sum of As for the weights of the front case 44 and the gear case 48, approximate weights are registered in advance in the weight data file 22 for each area of the turret surface.
Calculate the approximate weight of 8. Then, the weights of these machining axes (excluding the front case 48), the weight of the front case 44, and the weight of the gear case 48 are all added to calculate the approximate weight of the target turret surface. As described above, in this embodiment, the approximate weight of the turret surface is calculated, but it is sufficient that the weight of the turret surface, which is a problem here, is significantly different between the turret surfaces (outside the specified value described later). This is because the weight of the turret surface does not need to be calculated with high accuracy in the first place because it does not have to be different. Therefore, in calculating the weights of the front case 44 and the gear case 48, the approximate weights of the front case 44 and the gear case 48 are calculated from the area of the turret surface in consideration of simplicity.

Further, the method of checking the weight balance of the turret surfaces is such that if the turret surfaces located diagonally of the turret surface for which the weight has been calculated have already been grouped, the weight difference between the turret surfaces is calculated and the weight data file is calculated. It is compared with a prescribed value registered in No. 22. When the weight difference exceeds the specified value, the grouping result of either one of the turret surfaces is canceled by an interactive operation with the operator via the grouping execution unit 30, and when it is within the specified value, the turret The surface weight is stored in the machine specification file 21. If the turret surface on the diagonal is not grouped, add an equal weight (balance weight) to the turret surface that is not grouped and use this as the weight of the diagonal turret surface. Stored in the original file 21. After that, grouping is performed on the turret surface that has not been grouped, and when the effective weight of the turret surface after checking the weight balance is obtained, the weight of the turret surface in the machine specification file 21 is Updated to a valid weight value.

Further, to check the total weight of the turret surface, the weight of the turret surface is read from the machine specification file 21 and sequentially added to obtain the total weight of the turret surface,
That is, the total weight is obtained, and the obtained total weight of the turret surface is compared with a predetermined allowable value registered in the weight data file 22. When the total weight of the turret surface exceeds the allowable value, the heaviest turret surface is searched and presented to the operator. In response to this, the operator re-executes the grouping for the turret surface which is considered to be the heaviest.

In the case of a machine other than the turret machine (for example, a machining center or a dedicated machine), the weight balance does not cause any problem. Therefore, the total weight of the gear head is calculated, and it is checked by comparing it with the allowable value. Good.

The machine original position coordinate calculating section 35 reads predetermined necessary data from the work information file 20 and the machining axis information file 23, and automatically determines the coordinate value of the original position (machining start position) of the machine. It is a thing. Conventionally, the original position of the machine was automatically calculated by the designer based on the predetermined data, which was determined by the designer himself considering the work position, air cut amount, machining axis length, etc. It is calculated as follows. The obtained coordinate values of the original position of the machine are stored in a dedicated file (not shown) and provided to the operator via the output devices 10, 16 and 17 as necessary.

Specifically, in the grouping result for each turret surface, first, predetermined necessary data is read from the machining axis information file 23 for the machining axis belonging to the grouping, and the machining axis length is calculated according to the following equation 7. Calculate L (including front case height) (see FIG. 13). Note that the gear case height is not added to the length of the machining axis here, but this is because the gear case 48 is common to all machining axes assigned to one turret surface, so that the calculation is simplified. Of course, it is also possible to add the gear case height to the length of the machining axis. L = C + P + Q + R + T ... Equation 7 However, C: Tool tip length P: Tool protrusion amount Q: Holder height R: Spindle protrusion amount T: Front case height Then, based on the above calculation results, the longest machining The axis is selected, and the original position of the machine is set so that the tool tip of this longest machining axis is located away from the machining surface of the workpiece 50 toward the machine by the air cut amount A keyed by the operator via the keyboard 12. decide. Here, the air cut amount A may be registered in advance in an appropriate file (for example, the machine specification file 21) and read out as needed. When the original position of the machine is determined, predetermined necessary data is further read from the work information file 20 and the machine specification file 21, and the coordinate value (γ, δ) of the original position of the machine with respect to the work reference position is calculated. For example, the machine coordinate value δ in the processing direction is obtained by the following equation 8. δ = β + A + L + U + V Equation 8 = β + A + (C + P + Q + R + T) + U + V However, (α, β): Coordinate value of the machining hole A: Air cut amount L: Machining shaft length (including front case height) U: Gear case height V: Dimensions of Turret Surface Next, the operation of the present apparatus will be described with reference to FIGS. Here, for simplification, a case where the machining axis shown in FIG. 4 is assigned to the turret machine will be described as an example. FIG. 14 is a main flow chart schematically showing the operation of this device. When the power is turned on and the program is started, first, preprocessing for constructing a machining axis is executed (S1). Next, in the grouping execution unit 30, which machining axis is to be changed by an interactive operation with the operator.
Consider which machine and which gearhead to assign. In the case of a turret machine, consider which machining axis is to be assigned to which turret surface of which turret machine.
The result is stored in the machining axis information file 29 (S2). When this grouping process is completed, the interference check process between the work 50 and the holder 42 (S3), the work 50 is sequentially performed.
Interference check processing between the front case 44 and the front case 44 (S4),
A step correction process (S5) between the front cases 44, a turret weight check process (S6), and a machine original position coordinate calculation process (S7) are executed. At that time, steps S3 and S
In steps S4 and S6, as a result of the predetermined determination, the process may return to step S2, and the processing from step S2 onward may be repeated.

FIG. 15 is a flowchart of the preprocessing of step S1 of FIG. In the preprocessing of FIG. 15, first, various data are input. That is, the operator inputs work information (work shape data, machining portion position data, etc.) related to the work via the input device 12 or from another CAD system and stores it in the work information file 20 (S11). Similarly, the operator inputs the machine specifications (in the case of a turret machine, the number of turret surfaces, the area of the turret surface, the dimensions of the turret surface, etc.) via the input device 12 and stores them in the machine specification file 21 ( S12), similarly through the input device 12 by the operator, the components of the machining axis (tool 4
0, holder 42, spindle 41, bearing 43,
Enter the weight data of the front case 44, etc. for each model and model number.
Enter the approximate weight for each turret area, and also enter the specified value for determining the weight balance of the turret surface and the allowable value for determining the total weight of all turret surfaces, and enter these data into the weight data file 22. Store (S1
3). Further, the operator also inputs the input device 12
Via, the processing information (processing site name, processing type, processing shape, pre-processing information, processing direction, processing priority, etc.) for each processing site is input according to a predetermined processing information notation pattern and stored in the processing information file 23. Yes (S14). The order of the input processing in steps S11 to S14 is not limited to that in this embodiment, and may be arbitrary.

When the above input processing is completed, the process division decision unit 24 automatically divides the machining process based on the machining information registered in the machining information file 23, and stores the result in the process division information file 26. Yes (S15).
Specifically, for each processing part, the processing information file 23
The machining part name, the machining type, and the final machining shape (dimension) are read from, and the machining process is automatically divided according to the priority order while referring to the process division decision file 25 based on the machining part name, and the division is performed. The dimension of the machining shape is automatically set based on the final machining shape (dimension) for each process, and the type of tool used is automatically set based on the machining type.

Then, in the tool determining section of the machining axis information creating section 27, the machining information (machining shape, tool type) of each division process is read from the process division information file 26, and the division is performed while referring to the tooling information file 28. The optimum tool to be used is automatically determined for each process (S16),
Further, the tooling information creation unit of the working axis information creation unit 27 refers to the tooling information file 28 based on the model number of the tool used in step S16, and refers to other parts (holders) that make up the working axis. 42,
The spindle 41, the bearing 43, the bearing cap 45, the front case 44, etc. are automatically determined (S1).
7). In this way, the machining axis information creation unit 27 automatically determines information regarding the components of the machining axis (tool 40, holder 42, spindle 41, bearing 43, bearing cap 45, front case 44, etc.) for each divided process. Then, the machining axis is constructed (see FIG. 3), and the result is stored in the machining axis information file 29. As a result, the peripheral shape of the machining axis is created. In this process, as described above, the tool tip length is calculated from the tool diameter and the tip angle, and the tool protrusion amount and the spindle protrusion amount are set to predetermined standard values.
Further, in the present embodiment, the specified value and the allowable value are set and registered in the system in advance. However, as described above, the specified value may be keyed in in the pre-processing stage of step S1. May be.

FIG. 16 is a flowchart of the interference check process of step 3 of FIG. In this process,
First, in the component interference verification unit 31, the distance S1 between the workpiece 50 and the holder 42 at the machining end position is calculated by the above method (see FIGS. 6 and 7) for each machining axis assigned to the turret surface by the grouping process. Is calculated (S21), and the result S1 is compared with a predetermined prescribed value D1 registered in the machining axis information file 29 to determine whether or not there is a machining axis whose calculated interval S1 is smaller than the prescribed value D1. Yes (S22). If there is no machining axis smaller than the specified value D1, it is assumed that the distance between the workpiece 50 and the holder 42 for all the machining axes assigned to the turret surface is equal to or larger than the specified value D1 and a good positional relationship is maintained. The determination is made and the process returns, and the process proceeds to step S4 in FIG.

On the other hand, if there are machining axes smaller than the specified value D1 as a result of the determination in step S22, the tool protrusion amount correction unit 32 first performs the above processing on these machining axes (target machining axes). The tool protrusion amount P'so that the distance between the workpiece 50 and the holder 42 becomes equal to the specified value D1 is calculated according to the equation 1 (S23), and the result is a predetermined allowable value registered in the machining axis information file 29. Then, it is determined whether or not the calculated tool protrusion amount P ′ is within the allowable value for all the target machining axes (S24). If all are within the allowable value, the value P'is stored as a correction value in the machining axis information file 29, and the data of the tool protrusion amount is updated to the correction value P '(S26). On the other hand, if all are not within the allowable value, the grouping result for the gear head (turret surface) is canceled via the grouping execution unit 30 (S25), and the process returns to step S2 in FIG. The processing axis is removed from the turret surface, or the grouping is performed again on the turret surface, and the processes in steps S21 to S25 are repeated until the result of the determination in step 24 is OK (above, FIG. 8A). (See (B)).

FIG. 17 is a flowchart of the interference check process of step 4 of FIG. In this process,
Similar to the process of step S3 described above, first, in the component interference verification unit 31, the workpiece 50 and the front case 44 at the machining end position are processed by the above-described method for each machining axis assigned to the turret surface by the grouping process. The distance S2 is calculated (S31), and the result S2 is set to the predetermined specified value D registered in the machining axis information file 29.
By comparing with 2, it is determined whether or not there is a machining axis whose calculated interval S2 is smaller than the specified value D2 (S32).
If there is no machining axis smaller than the specified value D2, the distance between the workpiece 50 and the front case 44 for all the machining axes assigned to the turret surface is not less than the specified value D2 and a good positional relationship is maintained. Then, the process returns and further proceeds to step S5 of FIG.

On the other hand, if there are machining axes smaller than the specified value D2 as a result of the determination in step S32, the tool protrusion amount correction unit 32 first performs the above-mentioned processing on these machining axes (target machining axes). According to the equation 2, the tool protrusion amount P'so that the distance between the workpiece 50 and the front case 44 becomes equal to the specified value D2 is calculated (S3
3) Comparing the result with a predetermined allowable value registered in the machining axis information file 29, the calculated tool protrusion amount P ′
Determines whether or not is within the allowable value for all the target machining axes (S34). If all are within the allowable value, the value P ′ is stored in the machining axis information file 29 as a correction value and the data of the tool protrusion amount is updated to the correction value P ′ (S36), but otherwise. That is, if all are not within the allowable value, the grouping result for the gear head (turret surface) is canceled via the grouping execution unit 30 (S35), and the process returns to step S2 in FIG. Remove only the axis from the turret surface, or re-group the turret surface,
Until the determination result of step S34 is OK, step S
The processing from 31 to S35 is repeated (see FIG. 9 above). As described above, the corrected tool protrusion amount P ′ obtained in step S33 is the same as the previously corrected tool protrusion amount in the case of the machining axis whose tool protrusion amount is corrected in the process of step S3. It is the value with the correction added.

FIG. 18 is a flowchart of the front case level difference correcting process in step 5 of FIG. First, in the spindle protrusion amount correction unit 33, the operator inputs a value E (step correction possible value) for selecting a machining axis to be a step correction target, via the keyboard 12 (S41).

Next, for each machining axis (S1 to S4) assigned to the turret surface, the machining information file 2
3 and the necessary data (processing depth C, tool protrusion amount P, holder height Q, spindle protrusion amount R) from the machining axis information file 29, and according to the above-mentioned formula 3,
The distance I between the machining surface of the workpiece 50 and the front case position of the machining axis is calculated (S42) (see FIG. 10), and the obtained value has the smallest I value, that is, the machining axis of the shortest distance (S
1) is detected (S43).

Then, based on the position data of the front case position of each machining axis (S1 to S4) at the machining end position, the range of the level difference correctable value E input from the front case position of the detected machining axis (S1). All the machining axes (S1 to S3) in which the front case position exists are selected, and these are set as the correction targets of the spindle protrusion amount (S44).

Then, the machining axis to be corrected (S1 to S3)
Among the above, the front case position is based on the machining axis (S2) farthest from the machining surface, and the front case position of that machining axis (S2) is aligned with the front case positions of the other machining axes (S1, S3). , For example Equation 4 above
~ According to the equation 6, the spindle protrusion amounts R1 'to R3' of the correction target machining axes (S1 to S3) are calculated (S45).
That is, the step amounts a and b of the front case position between the reference machining axis (S2) and the other correction target machining axes (S1, S3) are calculated, and the correction target machining axes (S1, S3) are calculated.
), The amount of step difference a, b is added to the amount of protrusion (R1, R3) of the spindle.

Then, the result of step S45 is compared with a predetermined allowable value registered in the machining axis information file 29 to determine whether the calculated spindle protrusion amounts R1 'to R3' are all within the allowable values. Judge (S4
6). If all values are within the allowable values, those values R1
The data of the spindle protrusion amount is updated by storing "-R3" as a correction value in the machining axis information file 29 (S
49) If all values are not within the allowable values, the step-correctable value E is reset by an interactive operation (S47, S4).
1) The range of aligning the front case positions is narrowed and the processes of steps S42 to S46 are repeated, or machining axes outside the allowable value are excluded from the correction target without aligning the front case positions here. Then (S47, S48), the process proceeds to step S49 for the remaining target machining axes.

Then, it is judged whether or not the processes of steps S41 to S49 have been completed for all the machining axes assigned to the turret surface (S50), and if completed, the process proceeds to step S6 of FIG. If not, the process returns to step S41 and the processes of S41 to S50 are repeated (see FIG. 11).

FIG. 19 is a flowchart of the turret weight check process of step 6 of FIG. Here, first, the operator inputs the height of the gear case 48 through the keyboard 12 and stores the data in the machining axis information file 29 (S60), and then the weight verification unit 34.
In, the processing axis information file 29 is searched for all the processing axes assigned to the target turret surface, and the weight data of each component forming the processing axis is read from the weight data file 22 based on the model number. , And calculate the total of them to calculate the weight of the turret surface (S6).
1). At this time, as described above, since the approximate weights of the front case 44 and the gear case 48 are registered in advance in the weight data file 22 for each area of the turret surface, refer to this to refer to the front case 44.
The approximate weight of the gear case 48 is calculated.

Next, with reference to the machining axis information file 29, it is determined whether or not the grouping processing of step S2 has already been performed on the turret surface positioned diagonally to the turret surface whose weight was calculated in step S61 ( S6
2) If grouping is completed, the weight difference between both turret surfaces is calculated (S63), and the result is compared with a prescribed value registered in the weight data file 22 to determine whether the weight difference is within the prescribed value. Is determined (S64). If the weight difference between the two turret surfaces is within the specified value as a result of this determination, it is determined that the weight difference is not so large and there is no problem in the weight balance, and the calculated weight of the turret surface is stored in the machine specification file 21. However, if it is not within the specified value, it is determined that the weights of the turret surfaces in diagonal positions are significantly different from each other and there is a problem in weight balance (see FIG. 12), and the interactive operation is performed. Cancels the grouping result for either one of the turret surfaces (S
65), the process returns to step S2 in FIG. 14 to perform processing such as reducing or increasing the assigned machining axis, and repeats a series of processing until the determination result in step S64 becomes OK.

On the other hand, if the grouping has not been completed as a result of the determination in step S62, an equivalent weight (balance weight) is added to the turret surface for which the grouping has not been performed, and this is used as the weight of the diagonal turret surface. It is stored in the machine specification file 21 (S66), and the process proceeds to step S67. In this case, after that, the turret surface that has not been grouped is grouped, and when the effective turret surface weight after the weight balance check (S64) is obtained, the turret surface in the machine specification file 21 is determined. Will be updated to the effective weight value after the grouping.

In step S67, the total weight of the turret surfaces, that is, the total weight is calculated by reading the weights of the turret surfaces of the turret machine from the machine specification file 21 and sequentially adding the weights. Then, the calculated total weight of the turret surface is compared with a predetermined allowable value registered in the weight data file 22 to determine whether the total weight of the turret surface is within the allowable value (S68). If the total weight is not within the allowable value, the heaviest turret surface is searched, the grouping result for that turret surface is canceled via the grouping execution unit 30 (S65), and the process returns to step S2 in FIG. The grouping process for the canceled turret surface is re-executed, and a series of processes is repeated until the determination result in step S68 is OK, that is, until the total weight of the turret surface falls within the allowable value.

Then, by referring to the machining axis information file 29, it is judged whether or not the grouping processing has been completed for all the machining axes assigned to the turret surface for all the turret surfaces of the turret machine. If it is completed (S69), the process proceeds to step S7 of FIG. 14, and if not completed, step S of FIG.
Returning to 2, the series of processes is repeated.

FIG. 20 is a flowchart of the machine original position coordinate calculation processing in step 7 of FIG. In this process, in the machine original position coordinate calculation unit 35, as shown in FIG.
In the grouping result for each turret surface determined up to step S6, the operator first inputs the air cut amount A through the keyboard 12 (S7).
1) After that, predetermined necessary data (tool tip length C, tool protrusion amount P, holder height Q, spindle protrusion amount R, front) from the machining axis information file 23 for the machining axis belonging to the grouping for the target turret surface. The case height T) is read out, the length L of the machining axis is calculated according to the above-mentioned formula 7 (S72), and the machining axis having the longest machining axis length is detected based on this result (S73) and detected. The input air cut amount A is for the tool tip of the longest machining axis
The original position of the machine is determined so that the machine 50 is located away from the machined surface of the workpiece 50 toward the machine (S74). Then, the machining hole coordinate values from the work information file 20, the gear case height U from the machining axis information file 23, and the turret surface dimension V from the machine specification file 21 are read out, and these data and the machining of the longest machining axis are read. Based on the axis length L, the coordinate value (γ, δ) of the original position of the machine with respect to the work reference position is calculated (S75). For example, the coordinate value δ of the machine in the processing direction is calculated according to the above-mentioned equation 8. Then, the processing of steps S71 to S75 is repeated until all turret surfaces are completed (see FIG. 13 above).

Therefore, according to this embodiment, with respect to the machining axis assigned to the turret surface 49, the interference between the workpiece 50 and the machining axis components (holder 42, front case 44) at the machining end position is checked (the interval is Checking whether there is a specified value or more), and if it is less than the specified value, the tool protrusion amount of the machining axis is corrected (longer) so that the interval becomes the specified value. The interference with the peripheral shape is avoided, and the peripheral shape of the constructed machining axis is optimized.

Further, with respect to the machining axis assigned to the same turret surface 49, the spindle protrusion amount of the machining axis is adjusted so that the step between the front cases 44 is eliminated, so that it is assigned to the same turret surface 49. The position of the front case of the machining axis is aligned as closely as possible, and the manufacturing cost of the machine (turret machine) is reduced.

Further, the weight of the turret surface of the turret machine is calculated, and the weight balance between them is checked by comparing with the weight of the turret surface at the diagonal position. In the case of NG, one of the turret surfaces is measured. Since the grouping process is performed again, there is a problem that the turret machine is unbalanced during turning due to poor weight balance between the turret surfaces that are diagonally opposite each other, and the machining turret surface slightly deviates up and down during machining. It becomes possible to secure a predetermined accuracy.

Further, the total weight of the turret surface of the turret machine is calculated and compared with an allowable value. When the total weight of the turret surface exceeds the allowable value, the grouping process for the heaviest turret surface is performed again. , Problems such as the load on the motor driving the machine (turret machine) and the power to move the machine will be cleared, the accuracy of design consideration will be improved, and the reliability and durability of the machine will be improved. To do.

Further, since the coordinate value of the original position of the machine is calculated based on the obtained data for the turret surface to which the machining axis is assigned with optimized peripheral shape and the like, the original position of the machine is calculated. The coordinate values of will be automatically provided, and it will be possible to easily respond to the examination or change of the grouping.

Further, in common with the above, in the design study, since the conventional designer automatically performed the calculation by himself, the calculation accuracy is improved and the reliability and durability of the machine are improved. Will be improved and the time for design study will be significantly shortened.

[0083]

According to the invention of claim 1, the interference between the work and the peripheral shape of the machining axis is avoided, and the peripheral shape of the constructed machining axis is optimized.

According to the second aspect of the invention, the step between the front cases of the machining shaft is eliminated as much as possible, and the manufacturing cost of the machine can be reduced.

According to the third aspect of the invention, the problems such as the drive motor of the machine and the power for moving the machine are cleared, and the reliability and durability of the machine are improved.

According to the fourth aspect of the present invention, further, it is possible to eliminate a defect due to a poor weight balance between the turret surfaces which are diagonal to each other, and it is possible to ensure a predetermined accuracy, and the reliability of the turret machine is improved. Is improved.

According to the invention of claim 5, the coordinate value of the original position of the machine is automatically provided, and it is possible to easily deal with examination or change of grouping.

According to the invention of claim 6, similarly to the invention of claim 1, the interference between the work and the peripheral shape of the machining axis is avoided, and the peripheral shape of the constructed machining axis is optimized.

According to the invention of claim 7, like the invention of claim 2, the step between the front cases of the machining shaft is eliminated as much as possible, and the manufacturing cost of the machine can be reduced.

According to the invention of claim 8, the calculation of the weight of the gear head can be simplified while maintaining necessary calculation accuracy.

According to the invention of claim 9, similarly to the invention of claim 3, the problems such as the drive motor of the machine and the power for moving the machine are cleared, and the reliability and durability of the machine are improved. .

According to the tenth aspect of the present invention, as in the fourth aspect of the present invention, the problem caused by the poor weight balance of the turret surfaces which are diagonal to each other is eliminated, and the predetermined accuracy can be secured. Therefore, the reliability of the turret machine is improved.

According to the eleventh aspect of the invention, like the invention of the fifth aspect, the coordinate values of the original position of the machine are automatically provided, and it is easy to deal with the examination or change of the grouping. become able to.

In common with the inventions of claims 1 to 11,
In the design study, the former designer automatically performed the calculation by himself, which improves the calculation accuracy, improves the machine reliability and durability, and significantly reduces the design study time. Will be shortened to.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of hardware constituting a processing information creation device of the present invention.

FIG. 2 is a functional block diagram of the device shown in FIG.

FIG. 3 is a cross-sectional view showing an example of a constructed machining axis.

FIG. 4 is a schematic diagram showing a configuration example of a processing shaft used in the embodiment.

FIG. 5 is a schematic diagram showing another relationship between the holder and the spindle.

FIG. 6 is a diagram for explaining interference check using a three-dimensional model.

FIG. 7 is a diagram for explaining interference check using a 2.5-dimensional model.

FIG. 8 is a diagram for explaining the interference check of the work holder.

FIG. 9 is a diagram for explaining the interference check between the work and the front case.

FIG. 10 is a diagram for explaining a method of calculating the distance between the processed surface and the front case.

FIG. 11 is a diagram for explaining correction of a step between front cases.

FIG. 12 is a diagram for explaining the weight balance of the turret surface.

FIG. 13 is a diagram for explaining a method of calculating the original position coordinates of the machine.

FIG. 14 is a main flow chart schematically showing the operation of the apparatus of FIGS. 1 and 2.

FIG. 15 is a flowchart of the preprocessing of FIG.

16 is a flowchart of the collision check process of the holder of FIG.

FIG. 17 is a flowchart of the front case interference check process of FIG. 14;

FIG. 18 is a flowchart of a step correction process between the front cases of FIG.

FIG. 19 is a flowchart of the turret weight check process of FIG.

20 is a flowchart of original position coordinate calculation processing of the machine of FIG.

[Explanation of symbols]

20 ... Work information file (work information storage means) 21 ... Machine specification file (machine specification storage means) 22 ... Weight data file (weight data storage means) 29 ... Machining axis information file (machining axis information storage means) 30 ... Grouping execution unit 31 ... Parts interference verification unit (tool protrusion amount correction means) 32 ... Tool protrusion amount correction unit (tool protrusion amount correction unit) 33 ... Spindle protrusion amount correction unit (spindle protrusion amount correction unit) 34 ... Turret weight verification unit (Gear head weight calculation means,
Gear head gross weight verification means, weight balance verification means) 35 ... Machine original position coordinate calculation unit (machine original position coordinate calculation means)

Claims (11)

[Claims] 1. A machining information creation device for correcting the peripheral shape of a machining axis assigned to a gear head, which stores work information storage means for storing information about a work, and information about a machining axis assigned to a gear head. Machining axis information storage means, and tool protrusion amount correction means for correcting the tool protrusion amount of the machining axis based on the work information and the machining axis information so that the workpiece and the component parts of the machining axis do not interfere with each other at the machining end position, A processing information creation device having: 2. A spindle protrusion amount correcting means for correcting the spindle protrusion amount of the machining axis so that the step between the front cases of the machining axes assigned to the same gear head is eliminated based on the work information and the machining axis information. The processing information creation device according to claim 1, wherein 3. Machine specification storage means for storing machine specifications, weight data storage means for storing weight data of component parts of the machining axis, and machining axis information, machine specifications, and weight data based on the machine axis information. , The total weight of all gear heads of the machine is calculated by adding the weight of each gear head and the gear head weight calculation means for calculating the weight of the gear head of the machine, and it is verified whether this total weight is within the predetermined allowable value. 3. The processing information creation device according to claim 1 or 2, further comprising: 4. When the machine is a turret machine, the weight difference between the turret surfaces at diagonal positions is calculated based on the calculated gear head weight data, and the weight difference is kept within a predetermined specified value. The processing information creation apparatus according to claim 3, further comprising a weight balance verification means for verifying whether or not there is any. 5. A machine original position coordinate calculating means for calculating the coordinate value of the original position of the machine with respect to the work based on the work information, machining axis information, and machine specifications. The processing information creation device described in any one of 1. 6. The tool protrusion amount correction means calculates a distance between the workpiece and a component of the processing axis at the processing end position based on the work information and the processing axis information, and the distance is a prescribed value. Means for comparing, means for correcting the tool protrusion amount of the machining axis so that the distance between the workpiece and the component becomes equal to the specified value when the interval is smaller than the specified value, and the corrected tool protrusion Means for comparing the amount to a predetermined tolerance, and when the correction tool protrusion amount exceeds the tolerance,
A means for canceling the current machining axis assignment result, and a machining information creation apparatus according to any one of claims 1 to 5. 7. The spindle protrusion amount correcting means detects a machining axis whose front case position is closest to the machining surface of the workpiece at the machining end position, based on the workpiece information and the machining axis information, and the detected machining axis of the machining axis. By selecting a machining axis that has a front case position within the range of the level difference correction value input from the front case position, a means for setting the machining axis to be corrected, and the front case from the correction target machining axes. A means for detecting the machining axis whose position is farthest from the machining surface and correcting the spindle protrusion amount of the machining axis to be corrected so as to align it with the detected front case position of the machining axis; Means for comparing with the value, and when the corrected spindle protrusion amount exceeds the allowable value, an interactive operation is performed to add a value outside the allowable value. Machining information generating apparatus according to any one of claims 2-6, characterized in that it comprises a way to exclude an axis from the correction object, a. 8. The gear head weight calculation means calculates the weights of the front case and the gear case of the machining shaft based on the area of the machining shaft mounting surface of the gear head. Processing information creation device described in. 9. The gear head total weight verification means includes means for adding the weights of the gear heads of the machine to calculate the total weight of all the gear heads of the machine, and means for comparing the calculated total weight with a predetermined allowable value. 9. The machining information creation device according to claim 3, further comprising: a unit that cancels a current machining axis assignment result when the total weight exceeds the allowable value. 10. The weight balance verification means determines whether or not a machining axis is assigned to a turret surface in a diagonal position, and the machining axis is assigned to a turret surface in a diagonal position. In this case, based on the calculated gear head weight data, a means for calculating a weight difference from the turret surface at a diagonal position, a means for comparing the calculated weight difference with a predetermined specified value, and the weight difference is When the specified value is exceeded, a means for canceling the machining axis assignment result for either one of the turret surfaces by interactive operation, and the assignment of the machining axis for the turret surface in the diagonal position if it has not been assigned. The processing information creation device according to any one of claims 4 to 9, further comprising: a unit that sets an equivalent weight on a turret surface that has not been executed. 11. The machine original position coordinate calculating means calculates the length of the machining axis assigned to the gear head based on the machining axis information, and based on this result, means for detecting the longest machining axis, and the longest machining axis. Based on the means for determining the original position of the machine so that the tool tip of the tool will be at a position separated by a specified air cut amount from the machined surface of the work, and the work information and machine specifications, the coordinates of the machine's original position with respect to the work A unit for calculating a value, and a unit for calculating a value.
Processing information creation device described in.