JP5406105B2 - Method and apparatus for generating control data for tool control in machine tools - Google Patents

Description

The present invention relates to a method and apparatus for generating control data for tool control in a predetermined machine tool for machining a clamped workpiece (workpiece) from a blank state to a finished part. About.
In particular, the present invention provides a predetermined milling tool in a CNC-controlled machine tool, a CNC-controlled machine centering device, or the like for machining a clamped workpiece from a blank state to a finished part having a predetermined geometric shape. The present invention relates to a method and apparatus for generating control data for control.

Machine tools controlled by a CNC are well known in various forms as conventional techniques.
Such CNC ("numerical control by computer") means that the machine tool is numerically controlled, and is based on a CNC program including CNC control data. The machine tool includes a tool for removing material by machining from a workpiece. The control of the tool is executed by a control device based on the CNC control data of the CNC program. This makes it possible to accurately machine the clamped workpiece using a firm machine tool based on the CNC control data.

  Today, CNC programs are written with software support by the CAM system (Computer Aided Manufacturing System). The written CNC program has control data for controlling the moving cutting tool in the workpiece clamped on the machine tool along the generated path to remove the constituent material of the workpiece. Is included.

According to the prior art, a device (simulation apparatus) and a simulation method for simulating machining of a virtual workpiece in a virtual machine tool are disclosed.
There, the machining of the workpiece is visualized using an expression unit (display device), and the user can simulate to establish or change the control data for controlling the tool arbitrarily Can be evaluated.

For example, according to German published patent application 102006043390 (A) by the present applicant, a sequence simulation apparatus and simulation method in a CNC apparatus for simulating a sequence in order to machine a workpiece in a machine tool Are disclosed respectively.
Such a simulation device includes storage means for storing machine tool data in order to create a virtual image of the machine tool. A virtual image of the workpiece is created, a virtual image of the resource is created, and a workpiece data for saving the resource data is stored.
That is, it is possible to provide data necessary for creating a realistic image of a machine tool by these means. This includes not only the representation of the tool table and the workpiece, but also the possibility of displaying the fixation status in detail during the simulation.
Moreover, it makes it possible to display machine tools with different configurations including workpieces and tools. In addition, data corresponding to a comprehensive simulation unit is provided by corresponding means. Therefore, when simulating a sequence for a machine tool including a workpiece and a tool, it can be used virtually.

In addition, European Published Patent Publication No. 0524344 (A1) discloses a programming system that is a generation program for controlling machining in a CNC machine tool and that can be interactively oriented in a graphical manner.
That is, it is a dialog-oriented program that can be easily changed by the user or operator. And the control program for the machine tool can be supplemented or newly written as easily as possible with the graphic dialogue guide.

Japanese Laid-Open Patent Publication No. 2001-282331 (A) discloses an appropriate tool simulation method for simulating an actual tool of a machine tool.
That is, in machining with a tool, it is easy to change or set an operation, and a simulation method for machining with a tool is displayed on a monitor.

Further, US Pat. No. 6,584,373 (B1) discloses a generation method for controlling a CNC tool and a control system for controlling the CNC tool for control in a periodically recurring sequence.
That is, the control system includes a data input device, a visualization unit, a machine tool inspection unit, and an NC control device.
The NC controller then includes at least one saved NC program for generating a moving sequence for the CNC tool.

Also, path calculations for tools controlled by a conventional CNC are based on the dimensions and orientation in the geometry of the finished part intended on the workpiece.
The tool inserted along a simple machining path is then reciprocated to remove the workpiece material from layer to layer until the finished part contour is obtained. Control data is generated for processing. This is also called line-by-line machining.

Also, according to the geometric dimensions, the amount of machining along the machining path (the amount of material removed per unit time), i.e. the cutting performance of the tool on the material, is determined by the geometric dimensions. become.
Starting with a blank geometry, a machining path is generated in the CAM system, but when the contour profile of the workpiece geometry is less of an issue, that is, this profile profile is If it is not a problem for the geometric shape, the CAM system focuses on only the static machining amount determined in the cutting table and attempts to improve itself.

Then, when approaching the contour of the finished part, a different insertion tool will generate a milling path to remove the remaining material following the contour of the finished part under a constant feed.
Thus, the time of machining, i.e. the time required to reach the contour of the finished part by removing material starting from the blank state, is the programmed feed rate (feed rate) and the determined machining path. And determined by.

Therefore, in order to reduce the machining time of the workpiece from the blank state to the finished part, the conventionally known CAM system reduces the air cutting time (non-cutting time) for the tool. Generate one or more paths.
Such air cutting time is the time during which the controlled tool is held in a condition that does not remove material from the workpiece clamped to the machine tool.
Thus, such air cutting time can be used, for example, while the tool is guided from one location on the workpiece to another location on the workpiece to initiate a new machining pass to remove material. This means that there is no material to be removed from the workpiece during this air cutting time.

In contrast, a machining path is a path through which a predetermined tool that is being controlled is moved to remove a predetermined material of a workpiece.
Accordingly, such a tool moves along the machining path and removes a predetermined material from the workpiece.

German published patent publication 102006043390 (A1) (claims, etc.) European Patent Publication No. 0524344 (A1) (claims, etc.) Japanese Patent Publication No. 2001-282331 (A) (claims, etc.) US Pat. No. 6,584,373 (B1) (claims, etc.)

  As a result of diligent examination of problems and the like based on the prior art, according to the present invention, control data for controlling a tool in a machine tool that enables a short machining time compared to the prior art. An object of the present invention is to provide a generation method and a control data generation apparatus for generating such control data.

  That is, the object of the present invention is achieved by a method for generating control data having predetermined characteristics as set forth in claim 1 and a control data generating apparatus having predetermined characteristics as set forth in claim 11. Is done.

  In addition, embodiment which brings about the advantageous effect of this invention, and convenient embodiment are reflected in the dependent claim, and are demonstrated there.

That is, the present invention generates control data for controlling a predetermined tool in a machine tool for machining a clamped workpiece from a blank state to a finished part. A data generation method, including a predetermined path data generation process for generating path data indicating either a single machining path or a plurality of machining paths.
More specifically, by feeding (feeding) at least one predetermined tool, when removing a predetermined material from the workpiece, at what feed speed and in which tool direction. And generating path data indicating whether to move relative to the workpiece.

Moreover, according to the control data generation method of the present invention, the following steps are included.
That is, machining geometric shape model data relating to a geometric shape of a workpiece in machining is generated, and machining geometric shape model data indicating a current removal state of the workpiece at a predetermined machining time is generated. Process,
Providing finished part geometry model data indicating the geometry of the finished part on the workpiece;
In order to determine the difference between the machined geometry and the finished part geometry, based on a comparison of the machined geometry model data and the finished part geometry model data, the material that has not yet been removed, i.e. Generating different geometric shape model data corresponding to different geometric shapes of the material to be removed;
Generating path data comprising determining a machining path.
Here, the machining path is determined by feeding a predetermined tool as a geometric shape to be machined (cut and removed) by removing a predetermined material based on different generated geometric shape model data. It is subject to maximal removal of the material that has not yet been removed, i.e., the workpiece that has the different geometry, consisting of the material to be removed.
That is, the predetermined tool efficiently moves so that a predetermined portion of material does not substantially remain on a workpiece having substantially different geometric shapes.

  Further, according to the present invention, the path data is formed based on different geometric shape model data, and the path data is determined by the predetermined tool for the workpiece in addition to the determined machining path. It shows which tool direction is used to move a machining path based on different geometric shapes at which feed speed.

  Here, in the present invention, although predetermined path data is formed, the predetermined tool has a substantially different geometric shape while moving along the machining path depending on the maximum machining amount. In forming, it is conditioned on the maximum removal of a large part (including all or most of the meanings, and so on) of such different geometric workpieces per unit time by a given tool. (However, it may be referred to as writing conditions or necessary conditions. The same applies hereinafter.)

  Therefore, the control data, including the relevant machining path calculation, is not simply generated based on the geometry of the finished part as in the prior art, but is removed by the amount of machining that can be achieved (per unit time). Depending on the so-called different geometric shapes and / or so-called different geometries, by using a given tool, it is generated to satisfy the conditions for maximizing the machining amount.

  Also, in machining a workpiece, in the process of generating machining geometry model data related to the geometric shape, the current geometry of the workpiece is at any time when machining the workpiece. Since it can be determined, it is known that a predetermined material is removed from the workpiece at the present time of machining.

The machining geometry is the geometry at some time when machining the workpiece, and is an intermediate state between the blank state of the workpiece and the finished part of the workpiece. Is the geometric shape of the workpiece.
Accordingly, the machining geometry of the workpiece prior to removal of the workpiece material by feed, i.e. before the material is removed from the workpiece by the first predetermined tool, is the blank geometry. It is the same as the academic shape. Then, the geometric shape of machining after the machining process on the workpiece is finished is the same as the geometric shape of the finished part.

Also, the provision of the finished part geometry model data, which means the geometry of the finished part of the workpiece, according to the present invention in the method step, the geometry in the finished part of the workpiece and the geometry in machining. Allows comparison between shapes.
Based on this comparison, the material position, site, and geometry that are still protruding in the workpiece are determined.
That is, the material that should be removed by machining before the final workpiece is completed at the machining time at which the first machining geometry model data is determined, and has not yet been removed A so-called different geometric shape different from the previous geometric shape configured corresponding to the above is determined.
Therefore, based on the comparison between the machined geometric shape model data and the finished part geometric shape model data, different geometric shape model data (unlike the previous machined geometric shape model data, removed by machining) It is possible to generate another geometric shape model data meaning) based on a separately generated geometric shape corresponding to different geometric shapes of the material to be done.

According to this, at any time when machining the workpiece, the current geometric shape difference of the workpiece corresponding to the geometric shape different from that of the current workpiece is obtained accurately. Has the advantage that it can be determined that it should be removed.
Thus, at any time during machining, it is possible to determine what material should be removed from the workpiece. Such determination includes information on the geometric shape of the material to be removed and the determination of the shape.

Then, based on the determined current geometric shape difference model data, the predetermined tool is moved along the machining path so as to obtain the maximum machining amount for different geometric shapes of the workpiece. It is possible to calculate the machining path.
While the predetermined tool moves along the machining path depending on its maximum machining amount, the predetermined tool is used to remove the material from the workpiece and form different determined geometric shapes. However, it is important to satisfy it under the condition that a substantial part of the workpiece is removed to the maximum per unit time.

Also, apart from pure geometrical path calculations, the present invention generates predetermined path data so that in addition to the machining path being determined, the feed speed of the tool along the path And tool direction.
In this case, with respect to the feed rate of the tool, the higher feed rate directly results in a higher machining amount for the actual amount of machining achieved, so that the tool feed rate is a predetermined tool. Is an important parameter that determines when to move along the path.

In addition, the amount of machining that can be achieved when a given tool is moving along the path will also determine the tool orientation with respect to the feed direction.
Therefore, in addition to the spindle performance of the shaft or the parameters in the machine tool such as the feed value, the achievable machining amount can be measured (estimated) when determining the machining path. And parameters that may be further taken into account are, for example, the material of the workpiece, the diameter and height of the tool, and / or the number of blades of the tool.

According to the present invention, the maximum machining amount of a given tool means that it is the amount of material measured in the material that is maximally removed during the pass calculation.
It can be removed with a given tool per unit time, so that when a given material is removed from a workpiece, it is acceptable as the maximum (upper limit) for the actual amount of machining that can be achieved. It is the amount of substance.

  In addition, the maximum machining amount for a given tool is a tool-specific characteristic and depends on the geometrical characteristics and material of the tool, and also on the component material of the clamped workpiece. there's a possibility that.

  Thus, it is assumed that the maximum machining amount of a given tool is achieved at each point of the calculated machining path and is achieved by feed of the given tool along the calculated machining path. Optimum results will be achieved in that the machining time during the removal of a given material from the workpiece is reduced.

Therefore, according to the control data generation method of the present invention, the total machining time is considerably reduced as compared with the conventional method.
That is, according to the control data generation method of the present invention, it is preferable to perform the path calculation while taking into consideration not only the geometric shape in the finished part but also the machining amount directing method and the current geometric shape difference.
Since the predetermined path data is generated, the total machining time can be considerably reduced as compared with the conventional method in which only the predetermined path data is generated based on only the geometric shape of the completed part. .

  In addition, according to the control data generation method of the present invention, the machine tool further includes a step of selecting a predetermined tool that has a relatively large maximum machining amount depending on different geometric model data. It is preferable.

Thus, in the case of the present invention, when a workpiece is machined by a machine tool with a plurality of tools having different maximum machining amounts and different tool characteristics, one tool is calculated on the path. Depending on the determined geometrical difference (current geometrical difference) to be able to move the calculated path so that the highest possible machining amount is obtained when moving This is advantageous because a predetermined tool can be selected.
In this case, it is not always necessary to use the tool determined as the predetermined tool as the tool of the maximum machining amount, and the optimum machining amount can be achieved as much as possible depending on the geometric shape difference at the present time. Any tool determined as such may be used.

  Further, in the present invention, based on a process of generating machining geometric model data related to a workpiece during specific machining, and a comparison of the machining geometric model data and the finished part geometric model data, It is preferable that the step of generating different geometric shape model data (different geometric shape model data composed of the material to be removed) and the step of generating path data are successively repeated in this order.

Here, at least a second machining geometry model data relating to a second machining geometry of the workpiece and at least one predetermined tool is determined by the first path data. After moving along the path, second different geometric shape model data at a specific second machine time is generated after each step is repeated once.
Furthermore, here at least a second machining pass is determined by generating second pass data, the second pass data being based on second different geometric model data.
Also, the second path data is preferably generated, but the second tool per unit time while the predetermined tool is moving along the second machining path depending on the maximum machining amount. The predetermined tool of the machining pass is conditioned on removing as much as possible of the determined second different geometric shape for the workpiece.

This shows the advantage that the workpiece can be machined by removing the material of the workpiece from a blank state to the finished part in many machining steps. There, many of the machining steps involve movement in multiple machining passes.
Thus, to detect the current geometric difference of the new workpiece, after the predetermined tool moves along the machining path, the new machining geometry of the workpiece, the current machining It is possible to detect geometric shapes.
That is, the next machining path is determined based on the predetermined path data based on the new current geometric shape difference of the workpiece.
Thus, according to the present invention, the predetermined tool moves along each machining path in machining, so that the maximum machining amount can be achieved at any time of machining.

Also, in multiple machining, during machining of the workpiece, the predetermined tool includes movement along the multiple machining paths, so that the multiple machining paths cannot be directly connected or , If one machining pass includes the previous machining pass, each of the given tools is controlled to move from the end of the machining pass to the start of the next machining pass. It is necessary to.
Therefore, in the machining course controlled in this way, the air cutting time considered in the total machining time of the workpiece may be caused as a useless time problem.

On the other hand, according to the present invention, if the machining control data of the workpiece is generated by a combination of machining amount and directionality, the air cutting time (the material is substantially removed by machining). Time) is additionally minimized, which has the particularly advantageous effect of a considerable reduction in machining time.
That is, according to the generation method of the present invention, since the optimum machining path for removing material is determined, the movement of the tool from the end point in one machining path to the start point in the next machining path is determined. In doing so, the air cutting time is further minimized.
In this machining course, if multiple machining passes are not additionally combined, the air cutting time for moving the tool from the end point in one machining pass to the start point in the next machining pass It is a condition that it is determined to be minimum.

The method for generating control data according to the present invention further relates to tool procurement in a machine tool, and includes a step of providing tool procurement data indicating which tool characteristic the tool procurement tool has. Is preferred.
Further, it is preferable to include a method for selecting a predetermined tool having a relatively high maximum machining amount depending on the current geometric shape difference model data as the predetermined tool.
Each included method is then used in the next machining pass.
In addition, the control data generation method of the present invention may optionally include a determination step regarding tool change. The determination process regarding the tool change is a process of determining whether a predetermined tool that has been used before should be replaced with a tool selected for use in the next machining pass.
If another tool different from the previous tool is selected as the predetermined tool for the next machining pass, the next machining pass will depend on tool procurement in the machine tool.

By configuring in this way, in the present invention, when the workpiece is machined through a plurality of machining steps, a predetermined advantage is obtained.
That is, the optimal tool may be selected as one of the predetermined machining paths as the predetermined tool.
Moreover, although it is arbitrary, the selected predetermined tool can be used as a tool used for the next machining pass in the next machining by changing the moved predetermined tool used in the previous machining.

Moreover, it is preferable that the machine tool of the present invention includes a control device for controlling at least one predetermined tool.
And such a control device enables the free movement of the predetermined tool in the three-dimensional direction with respect to the clamped workpiece, and the predetermined tool has free directionality with respect to at least five axes. It is possible.
Furthermore, based on the current geometric shape difference, when the at least one predetermined tool moves along the machining path, the predetermined path data is preferably generated, and based on the above-described current geometric shape difference, The feed direction, feed speed, and / or directionality (rotation direction) of the predetermined tool with respect to the clamped workpiece can be changed.

According to this, the tool directionality is free with respect to the workpiece, and therefore has at least five axes (three linear axes and two rotation axes) in the control device of the machine tool. Thus, the tool can have free movement and directionality (rotation).
That is, the tool can be guided freely with respect to the clamped workpiece, so that in a given tool with a different geometry of the workpiece, in addition to the linear path course on many geometric shapes. Thus, it becomes possible to select a machining course of a complicated curve.
Therefore, according to the present invention, it is possible to select a machining pass course that maximizes the amount of machining that can be achieved along the pass course.

Thus, the variable feed speed and feed direction for a tool controls the change in feed speed and feed direction for a given tool along the path so that a machining amount comparable to the actual machining can be achieved. Therefore, it shows a unique advantage that a path may be calculated.
When the path calculation is performed, the machining amount depends on the maximum machining amount of the predetermined tool, but by satisfying the condition that the machining amount is maximized, the feed speed, the feed direction, and Preferably, path data for the tool direction is generated.
On the other hand, corresponding to the geometric shape of the finished part, the constituent material may satisfy the condition that it is not further removed at all.
That is, it is preferable that the feed speed and feed direction change continuously along the path, although depending on different geometric shapes.

  Also, the path data may be further generated with acceptable performance parameter dependencies and / or machine tool dynamics, so that a predetermined tool is determined based on the path data. The maximum performance parameters and / or dynamic characteristics of the machine tool are not exceeded when moving.

This is also advantageous because no path data is calculated that exceeds the acceptable performance parameters in the machine tool and / or overloads beyond the machine tool dynamics. It is a thing.
Here, the characteristic parameters and dynamic characteristics of the machine tool include, for example, spindle characteristics, feed performance with respect to a linear axis, feed performance with respect to a rotary axis, feed values that are dynamically acceptable on the linear axis and the rotary axis, and And / or the maximum allowable load on elements of the clamping means and machine tool controller, which may be force and / or torque.

  Furthermore, although at least one predetermined tool depends on one or more maximum loads, there is a possibility of generating path data, and the predetermined tool is in a machining path determined based on the path data. It is important that the load of the predetermined tool does not exceed the maximum load (maximum allowable load value) of the predetermined tool while moving along.

This is because, as a condition, one or more maximum loads should not exceed the maximum allowable load value in the machining path of the tool being evaluated, apart from the condition of optimizing the machining amount, and as a result always Since the path is calculated and the predetermined path data is always generated, there is an advantage that the maximum allowable load value of the tool is not exceeded when it is expected.
Here, the load of the tool is referred to as a force or torque acting on the predetermined tool while moving on the machining path determined by the predetermined tool.
Therefore, when the load of the tool on the scheduled workpiece exceeds the maximum allowable load value, the machining path and any path data are not determined, so that damage to the tool can be prevented.

The generation method of the present invention is a process for generating machine tool geometric shape model data indicating a current machine tool geometric shape at the time of specific machining of a workpiece, It is preferable to have a production method step that repeats.
The current machine tool geometry is the current relative orientation of a given tool with respect to the elements of the control device and the fixing means in the machine tool for fixing the workpiece during a specific machining operation. It preferably contains information about relative positions.
Moreover, if the path data is generated based on machine tool geometry model data and / or a comparison of machine geometry with machine tool geometry model data at a particular machining time When a predetermined tool moves along a machining path, a collision between a machine tool element and a machine tool element, or a machine tool element and a machine tool element other than the predetermined tool in the machine tool. It is preferable to satisfy the condition that the collision is prevented by at least one predetermined tool.

According to this, there is an advantage that a collision check in anticipation can be executed. Thus, for a given tool that has not determined any machining path, it is the element of the controller that fixes the means at the machine tool, workpiece, or other element of the machine tool as it moves through the path. It will lead to a collision.
In that case, apart from the fixing means of the machine tool, only the predetermined tool controlled by the control device comes into contact with the workpiece to be machined.
This proactive collision check is therefore arbitrarily complex and curvilinear with respect to constantly changing feed directions and feed speeds and / or tool orientations, in accordance with the invention in dependence on different geometries. It is particularly advantageous because of a machining pass course that may be present.

  Also, in the generation method of the present invention, the blank geometry of the workpiece, the machining geometry of the workpiece, the finished part geometry of the workpiece, a different geometry (the blank of the workpiece) Model data (at a particular machining time, at a particular level) to generate a virtual 3D model of each of the machine tools, and / or another geometric shape that is substantially different from the state geometry. Machine geometric shape model data indicating the machining state of the workpiece, completed part geometric shape model data indicating the geometric shape of the finished part on the workpiece, and different geometric shape model data corresponding to different geometric shapes One model data) is preferably adapted to each.

This means that the model data that is generated and provided is visually visible, and each geometric shape is shown as a virtual three-dimensional model, i.e. displayed. Have.
Thus, each machining state of the workpiece can be shown to a human operator, or each geometry in individual or combination can be displayed.
In addition, the machining path determined by the machining geometry can be shown to a human operator. Then, the human operator can check the machining path determined in this way on the display, and can change it if necessary.

According to the generation method of the present invention, it is preferable that the path data generate one or more virtual predetermined tools based on a simulation of machining of a virtual workpiece in a virtual machine tool.
In addition, the simulation includes generating a virtual three-dimensional model of the raw workpiece, the first including determining a first machining path for the virtual predetermined tool. It is preferable to generate the path data.
Then, after the movement along the determined first machining path by the virtual predetermined tool is simulated, the virtual workpiece machine showing the virtual removal state of the workpiece at the time of machining Preferably, machining geometric shape model data relating to a virtual three-dimensional model corresponding to the machining geometric shape is generated.
Moreover, it is preferable to simulate the movement in the first machining path determined based on the generated first path data by a virtual predetermined tool.
Also, the completed part geometric shape model data relating to the virtual three-dimensional model of the geometric shape of the completed part is provided.
This model data shows the finished part geometry of the virtual workpiece and shows the different geometry for the material to be removed from the virtual workpiece to achieve the finished part geometry. Yes.
The completed part geometric shape model data generates second path data including determination of the second machining path based on the different geometric shape model data.
Then, the generation of such path data is performed when the predetermined tool is simulated to move along the second machining path depending on the maximum machining amount. It is conditioned on the maximum removal of most of the different geometric shapes of the workpiece.

This can be obtained as an advantage that a machining path and associated path data may be determined by simulating a virtual machine tool.
A virtual machine tool for simulating a process for machining a workpiece is disclosed in German Patent Publication No. 102006043390 (A1). And the published content is appropriately referred to in the present invention and appropriately incorporated.

Moreover, by simulating the machining of the workpiece, it is possible to cope with a large data communication transaction volume (traffic) as an advantageous method, especially because the 3D model data is a large amount of data. A situation where each intermediate process or unique machining process may be simulated and / or stored.
Moreover, according to such a simulation, the operator can provide or change simulation parameters and can be actively involved in the simulated machining.
Optionally, the overall machining of the workpiece may be simulated with different predetermined tools or different tool changes.
For example, you can simulate different machining strategies by means of simulation,
The individual simulation means can be compared with each other, and as a result, an optimum machining course (machining strategy) can be selected.
Further, for example, a machining course includes a predetermined tool itself or a tool change, and a tool change is determined, a start point and an end point in machining are determined, and these are usually determined by an operator. .

Therefore, an optimal machining of the workpiece by simulation and an iterative approach with respect to the machining time reduced by the optimization of machining is possible.
Simulation is a machining amount that requires a virtual predetermined tool to be able to move a machining path that is determined based on the path data and that is along the calculated machining path.

According to the simulation, the operator subjectively influences the simulated machining process, subjectively selects a new tool, and further adapts or changes the CNC part program. Make it possible arbitrarily.
The simulation also allows the operator to visually see and display an intermediate state of machining.
Thus, when the operator is in a specific intermediate state that depends on the different geometric shapes involved, the operator can anticipate or associate the machining process.
Optionally, simulation can be used as a salient parameter as security.
And for safety, it is also possible to check the simulated machining process in the case of specific intermediate states based on different geometric shapes.

In addition, the path data is preferably generated for the machining path as follows.
That is, the machining path is preferably determined in a plurality of interconnected machining path sections, and the starting point of the machining path is determined depending on different geometric shapes. Is preferred.
Here, although it depends on different geometric shapes, it is determined from the starting point of the machining path, but the first machining path unit starts from the starting point of the machining path and has the maximum machining amount by a predetermined tool. It is preferable that it is determined to be.
Although it depends on different geometric shapes, it is determined from the end point of one of several internally coupled machining paths, but another machining path part starts from the end point of the previous machining path. It is preferable that the amount of machining by the predetermined tool is determined to be maximized.
Furthermore, even if the predetermined tool moves along the first machining path and another machining path, the predetermined material is not removed from the geometric shape of the finished part.

This has the advantage that a predetermined machining path can be determined at a predetermined condition at each end point of the section.
That is, while the predetermined tool moves along the path determined based on the generated path data, the machining amount by the predetermined tool is maximized, although it depends on the maximum machining amount of the predetermined tool. Is satisfied.
In this machining pass course, further machining pass parts are determined depending on different geometric shapes, so that the condition of maximizing the amount of machining by a given tool is met, but the feed direction of the given tool In a short time, a given machining path can be determined so that the feed rate and / or tool orientation can accommodate different geometric situations after the short machining path. preferable.
Accordingly, the path course optimized according to the present invention is determined by optimization by repetitive passes and the amount of machining is determined, so that the optimization location is determined. Based on the machining amount, it is possible to determine the machining amount in the entire machining pass by the machining amount-optimization method.

According to the invention, a control for controlling a predetermined tool in a machine tool for machining a clamped workpiece from a blank state to a finished part in order to carry out the production method according to the invention. A data generation method and a generation apparatus for generating such control data can be provided.
In the control data generation apparatus of the present invention, at least one predetermined tool repeatedly becomes a route for moving at least one of the machining paths in order to remove material of the workpiece by feeding. It is preferable that path data generating means for generating path data is included.

Further, the control data generation apparatus of the present invention includes a machining geometric shape model data generation unit, which is first machining geometric shape model data related to machining of a workpiece, and has a specific shape. First machining geometric shape model data indicating the current removal state of the workpiece during machining is generated.
In addition, the control data generation apparatus of the present invention has a supply unit of completed part geometric shape model data for providing completed part geometric shape model data indicating the geometric shape of the completed part of the workpiece. .
Further, the control data generation apparatus of the present invention has different geometric shape model data generation units, and the different geometric shape model data generation unit includes the machining geometric shape model data and the finished part geometry. It is based on a comparison with geometric model data and is used to generate different geometric shape model data to determine the current geometric shape difference between the machined geometric shape and the finished part geometric shape. is there.
The control data generation device of the present invention has a path data generation unit, and the predetermined tool moves based on the generated geometric shape model data of a different workpiece, and This is to generate path data including determination of a machining path for feeding to remove the material of the different workpiece geometry generated at the present time.
Furthermore, depending on the maximum machining amount of a given tool, the removal amount per unit time is maximized for different geometric shapes of the workpiece while the given tool is moving in the machining path. Thus, the conditions relating to the feed based on the generated geometric model data of different workpieces at the present time are satisfied.

Moreover, it is preferable that the control data generation device of the present invention further includes a machine tool parameter detection unit.
The machine tool parameter detection unit is for detecting acceptable performance parameters and / or dynamic characteristics.
The machine tool parameter detection unit does not exceed the maximum performance parameter and / or the dynamic characteristic of the machine tool when the predetermined tool moves on the machining path determined based on the path data. It is preferable to generate the path data while satisfying the above condition.

This offers the advantage of being able to detect performance parameters and / or dynamic properties that are maximally acceptable in machine tools.
Then, it is preferable to determine that the detected performance parameter and / or kinetic characteristics are not exceeded with respect to the machining path and path data.

The control data generation apparatus of the present invention preferably further includes a tool characteristic detection unit of a machine tool.
The tool characteristic detection unit of the machine tool is for detecting a tool characteristic of a tool provided in the machine tool, and the tool characteristic includes one or more load values for the tool.
The control data generation apparatus of the present invention has a path data generation unit for generating path data, and while the predetermined tool is moving along the machining path determined by the path data. In addition, the condition that one or more loads on the predetermined tool do not exceed the maximum load on the predetermined tool is satisfied.

  With this configuration, although one or more maximum loads in a given tool are known, with respect to the machining path and path data, the given tool follows the machining path based on the generated path data. The advantage is that one or more maximum loads on a given tool cannot be exceeded while moving.

Moreover, it is preferable that the control data generation device of the present invention further includes a tool procurement detection unit for detecting tool procurement provided in the machine tool.
In addition, the control data generation apparatus of the present invention preferably further includes a tool selection unit for selecting a tool having a relatively high maximum machining amount depending on the geometric shape difference at the present time.
In addition, the control data generation apparatus of the present invention further includes a tool replacement determination unit, and determines the previously determined tool as the next machining path depending on the tool procurement of the detected machine tool. It is preferable to decide to replace with a predetermined tool that is selected for.
If such a tool replacement determination unit determines a tool other than the previously determined tool as a predetermined tool for the next machining pass, the tool replacement determination unit preferably determines the tool replacement. become.

This is advantageous because the tool procurement status of the machine tool is detected and the available tools and the characteristics of the tools associated with them are known, eg the maximum amount of machining.
That is, the machining path and related path data can be determined under optimum conditions, and each tool can be selected as a predetermined tool. More specifically, the predetermined tool selected can maximize the amount of machining that can be achieved along the path.
Moreover, in order to allow a larger machining amount, it is also possible to exchange a predetermined tool and another tool during the machining in a plurality of machining steps.

Moreover, it is preferable that the control data generation apparatus of the present invention further includes a machine tool geometric model data generation unit.
The machine tool geometric shape model data generating unit is for generating machine tool geometric shape model data indicating a current machine tool geometric shape at a specific machining time of a workpiece.
The machine tool geometry includes the current directionality of the predetermined tool, the position of the predetermined tool, elements of the control device, clamping means for clamping the workpiece, and the like.
Thereby, the path data is preferably generated based on the comparison between the machine tool geometric shape model data and / or the machine tool geometric shape model data and the machine tool geometric shape model data at the time of specific machining. Is done.
When at least one predetermined tool moves along the machining path determined by the path data, the collision between the machine tool element and the machine tool element, the machine tool element, and the predetermined tool are performed. It is possible to satisfy the conditions for preventing the collision with other machine tool elements.

This has the advantage that not only the geometry of the workpiece but also the geometry of the current machine tool at a specific time during the machining of the workpiece is well known or determined Is obtained.
The geometry of the machine tool may include, as information, the current site of the machine tool and / or the position of the machine tool on a movable member, for example, the element position of the control device or the element position of the fixing means. preferable.
As a result, it is possible to preferably determine the relative sites and / or their positions between machine tool elements and other elements. For example, the relative sites between the fixing means and the elements of the control device and / or their positional relationship.

Moreover, there is the advantage that it is possible to compare the machine tool geometry with the machine geometry of the workpiece at any time during the machining of the workpiece.
As a result, the relative sites and positions of the workpiece elements clamped to the machine tool, for example the sites and positions of the movable elements of the machine tool, in particular the relative positions between the fixing means and the control device elements. Sites and / or their locations can be determined.
Furthermore, the path can be calculated so that collision problems do not occur when a given tool moves along the path. In particular, there is the advantage that no collisions occur between the elements of the control device and the workpiece fixing means.

  In addition, the control data generation device of the present invention is a visual three-dimensional model of a blank geometric shape, a virtual three-dimensional model of a machining geometric shape, and a virtual three-dimensional model of a finished part geometric shape. And / or preferably a device for substituting a virtual three-dimensional model of the machine tool, for example a display device for display.

  In this way, the blank geometry, the machining geometry, the finished part geometry and / or the workpiece at any time during the machining of the workpiece on the machine tool. Different geometric shapes of objects and / or geometric shapes on the machine tool can be shown to the human operator.

In addition, the control data generation apparatus of the present invention preferably further includes a path data generation unit for generating path data by simulation of machining a virtual workpiece using a virtual machine tool. .
The path data generation unit preferably includes a machining simulation unit for simulating the movement of the virtual predetermined tool based on the path data generated by the path data generation unit.
The machining geometric shape model data generation unit preferably generates machining geometric shape model data related to a virtual three-dimensional model of the machining geometric shape of the virtual workpiece in machining.
The machining geometric shape model data indicates a virtual removal state of the workpiece, and is a first determined machining path that is simulated by the machining simulation unit. It may be machining geometric model data at any time after the tool moves in the first determined machining path.

Moreover, it is preferable that the control data generation device of the present invention further includes a completed part geometric shape supply unit.
This finished part geometry supply unit allows different geometry model data generation units to be removed from the virtual workpiece, i.e. the material that has not yet been removed, in order to achieve different finished part geometry. Completed part geometry model data is provided for generating geometry model data representing different geometric shapes comprised of the material to be produced.
The completed part geometric shape model data indicates the completed part geometric shape of the virtual workpiece, and is data relating to the virtual three-dimensional model of the completed part geometric shape.

More preferably, the path data generating unit is to generate second path data for determining a second machining path for different geometric shapes of the workpiece.
In the simulation of machining depending on the maximum machining amount of the predetermined tool, when the virtual predetermined tool moves along the second path data, different geometric shapes of the workpiece per unit time are obtained. It is preferable to satisfy the condition of removing most of the maximum.

  This has the advantage that the machining path and the associated path data can be determined by a generator by simulation in a virtual machine tool.

FIG. 1 is a schematic diagram showing a machine tool. FIG. 2 is a flowchart showing a control data generation method according to the first embodiment of the present invention. FIG. 3a is a schematic diagram for explaining a simple example of a blank geometry of a workpiece, FIG. 3b is a schematic diagram for explaining a simple example of a machining geometry, and FIG. FIG. 3D is a schematic diagram for explaining a simple example of a finished part geometric shape, and FIG. 3D is a schematic diagram for explaining a simple example of different geometric shapes. FIG. 4a is a schematic diagram for explaining a simple example of the second second geometric geometry, and FIG. 4b is a schematic diagram for explaining a simple example of the second second different geometric shape. It is. FIG. 5 is a flowchart showing a control data generation method according to the second embodiment of the present invention. FIG. 6 is a flowchart showing a control data generation method according to the third embodiment of the present invention. FIG. 7 is a diagram showing an embodiment of the control data generation apparatus of the present invention.

  Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 shows a schematic diagram of a machine tool 100 for machining a clamped workpiece 150 from a blank state to a finished part. The machine tool 100 includes a control device 110, a clamping unit 120, a predetermined tool 130b, and a tool case 140.
Here, the tool case 140 includes a plurality of tools 141a, 141b, 141c, and 141d. The control device 110 includes a predetermined tool 130, and the predetermined tool 130 is along a machining path (machining path) determined for the control device 110 to remove the material of the workpiece by machining. It is designed to be able to control.
Further, the workpiece 150 to be machined is fixed by the clamping means 120 which is a fixing means.

In addition, the tool case 140 is a changing device 142 for changing a predetermined tool 130 provided in the control device 110. And it has the change apparatus 142 for taking out each tool 141a-141d from the tool case 140 one by one, and changing it.
Accordingly, each of the tools 141a to 141d and 130 can be arranged at a predetermined location by the control device 110.
Further, after the control device 110 changes the tool by the changing device 142, a predetermined workpiece can be machined by the respective tools 141 a to 141 d and 130.

Further, in the machine tool 100, the specific tool characteristics of the various tools 141a to 141d and 130 are different.
Examples of such tool characteristics include a single material or a plurality of materials constituting the tool, the diameter and height of the tool, the number of blades of the tool, the load of the tool, and the maximum machining amount of each tool. Here, the maximum machining amount by the tool mainly depends on the tool characteristics.

The amount of machining by the tool in this case is a parameter indicating how much material is removed from the workpiece per unit time. A general unit of machining amount of a tool in a machine tool is cm ³ / min.
Here, as one of the tool characteristics, the tool height is not meant to mean the absolute height of the tool, but rather to mean the relative height of the workpiece to the machining material. Is.
Therefore, it means the depth at which the tool can insert a workpiece to remove material, corresponding to the depth of machining possible by the tool.
In addition, the maximum machining amount of the tool will depend on the materials that make up the workpiece.

Further, when the predetermined tool 130 moves along the determined machining path with respect to the workpiece 150, the predetermined constituent material in the workpiece 150 is removed.
This is because as the actual machining progresses, the machining amount is measured in volume (cm ³ ) per unit time (minutes), which is smaller than the maximum machining amount of the tool, The limit is equal.
In practice, the amount of machining achieved while the workpiece 150 is moving through the determined machining path may be, for example, a predetermined tool 130 along the determined machining path. Depends on the feed speed.
Furthermore, it is the performance for generating this feed speed (cutting speed), which is the performance of the spindle 111 for rotating the predetermined tool 130 with respect to the shaft, the material of the workpiece 150, the material of the tool 130, and the diameter of the predetermined tool 130. It also depends on factors such as the height, the number of blades, and the orientation of the tool 130 relative to the clamped workpiece 150.

The machine tool 100 is a CNC machine tool, and the control device 110 is automatically controlled by CNC control data supplied to the machine tool 100.
As described above, the predetermined tool 130 is controlled based on the CNC control data.

Moreover, according to the control apparatus 110 in the machine tool 100, free tool mobility can be exhibited with respect to the three-dimensional direction.
Therefore, the tool 130 can be freely controlled with respect to the five axes, and the tool 130 can be controlled with respect to the clamped workpiece 150.
In addition, since the three linear axes are provided, the predetermined tool 130 can be moved in all three-dimensional directions.
Each of these three linear axes is arranged in the vertical direction, and each tool can be moved linearly.
Here, a complex path profile can be created by moving linear axes simultaneously.
Moreover, the free tool orientation with respect to the clamped workpiece 150 is different from the two axes of rotation, ie the diagonal rotation of the tool (the rotation to generate the cutting speed, and should not be confused) ) And a second rotating shaft that allows the workpiece 150 to rotate.
Therefore, the angle formed by the tool 130 with respect to the clamped workpiece 150 can be a negative angle (minus angle), and even so-called undercut processing is possible.

FIG. 2 is a flowchart showing the first embodiment of the control data generation method of the present invention.
That is, this is a method for generating control data for controlling a predetermined tool in the machine tool 100 for machining the clamped workpiece 150 from a blank state to a finished part.
Then, a step S201 for generating machining geometric shape model data, a step S202 for providing geometric shape model data of a finished part, a step S203 for generating different geometric shape model data, and a step for generating path data S204.

Next, with reference to FIGS. 3a to 3d, the machining geometry of the workpiece, the geometry of the finished part of the workpiece, and the different geometry of the workpiece will be specifically described below. Explained.
First, FIG. 3a is a specific example of the workpiece 310 in a blank state, which is one cubic state, and this cube represents the blank state of the workpiece.
Therefore, the workpiece is fixed to the machine tool 100 by the clamping means 120 in the initial state of machining the workpiece.

FIG. 3 c is an example of one of the finished parts 340 obtained by machining the blank 310. FIG. 3b shows that after the one or more predetermined tools 130 have removed the constituent material from the upper right side of the blank geometry 310 along one or more machining paths, the machining first An example of a possible first intermediate stage geometry of the workpiece at time t1 is shown.
That is, this represents a machining geometry (machining geometry in an intermediate state) 320 at the first machining time t1.
Also shown in FIG. 3d are the constituent materials 330a, 330b that should be removed from the machining geometry 320 in the first intermediate workpiece to provide the finished part geometry of the finished part 340. .
These component materials 330a, 330b to be removed include the finished part geometry of the finished part 340 and the machining geometry of the machining geometry 320 on the workpiece in the intermediate state of the first machining time t1. This is caused by directly comparing the shape.

In addition, the different geometric shapes 330a and 330b are accurately recognized and confirmed as constituent materials that have not yet been removed before the finished part 340 is obtained.
That is, in FIG. 2, “the process of generating machining geometric shape model data” represented by S201, “the step of providing finished part geometric shape model data” represented by S202, and S203. This corresponds to “a process of generating different geometric shape model data”.

A machining geometry 320 in the intermediate workpiece at a specific machining time t1 is determined, and a machining geometry is generated based thereon.
Then, in the first machining time t1, the machined geometric processed shape 320 is processed.
Further, in step S202 “step of providing completed part geometric shape model data”, model data of the completed part geometric shape 340 is provided.
That is, a finished part geometry that is a finished workpiece geometric shape after being machined by one or more tools 130 and / or 141a-141d to a finished state. It provides academic shape model data.

Further, the machining geometric shape model data is compared with the geometric shape model data of the finished part, and is executed in the “generation step for generating different geometric shape model data” represented by S203, whereby the model data Is generated.
Then, different geometric shapes 330a and 330b of the workpiece at the first machining time t1 are recognized, thereby generating machining geometric shape model data.

Next, in the “step of generating path data” represented by S204, the machining path is determined by the different geometric shapes 330a and 330b of the workpiece.
Then, the predetermined tool 130 moves in order to remove the constituent material from the workpiece 150 by the feed.
Furthermore, in the “process for generating path data” represented by S204, when further path data is generated for the determined machining path, the feed speed for the workpiece and the tool directionality are added. The predetermined tool 130 can move the machining path determined in step S204.

According to the present invention, the machining pass and the pass data are respectively determined and generated in the following steps.
When such a process moves the machining path determined in step S204 based on the maximum machining amount of the predetermined tool 130, the predetermined tool 130 is different in the process S203 of the workpiece per unit time. Most of the volumes of the geometric shapes 330a and 330b are removed.
Therefore, the machining path is determined in step S204, and the path data is generated in consideration of the different geometric model data generated in step S203.

In such a process, the machining path is determined by the different geometry 330a, 330b of a given workpiece 150, and as much machining as possible is actually performed as the given tool 130 moves through the machining path. Will be made.
More preferably, the machining corresponding to the maximum machining amount of the predetermined tool 130 is performed.
Further, once the machining path is determined, only the volume portions of the different determined geometric shapes 330a, 330b can be removed as the predetermined tool 130 moves through the determined machining path.
That is, when the predetermined tool 130 moves through the determined machining path, the material corresponding to the finished part geometry 340 will not be removed at all.

In the “step of generating path data” represented by S204, when the predetermined tool 130 moves along the machining path, the free tool movement with respect to the workpiece 150 and the free tool direction are as much as possible. The feed direction, feed speed and / or tool direction are continuously adjusted and corrected so that the actual machining amount can be increased.
When this is possible, the maximum machining amount for a given tool can be reached.

According to the present invention, when the curved path course is complicated by different geometric shapes at the first machining time t1, here, the change in the feed direction of the predetermined tool 130 is determined along the machining path, respectively. Is done.
Further, it is possible to perform machining so that the actual machining amount is maximized by changing the direction by the predetermined tool 130.
In particular, if machining is determined and the direction is changed along the path, greater machining can be achieved than with a straight feed direction without direction change.

Therefore, the generation method in the present invention is different from the so-called line-by-line machining which is the prior art.
That is, according to the generation method of the present invention, as in the prior art, the constituent material of the workpiece is removed in the form of flakes for each layer until the finished part geometric shape 340 is obtained, and the predetermined tool 130 along the straight path is obtained. It is not processed by simple reciprocation.
In contrast to such machining for each line, the present invention, when moving along the machining path in step S204 based on the path data generated by the tool, There is a feature that the tool direction is changed.
That is, when the predetermined tool 130 moves the determined machining path based on the situation of the different geometric shapes 330a, 330b to be removed, the predetermined condition is set so as to maximize the actual machining amount. Can be changed.

Furthermore, during the feed movement, the constituent material is constantly removed from the workpiece 150, thereby reducing the air cutting time (non-cutting time).
Therefore, since the tool moves while feeding to the workpiece without touching only air, the constituent material of the workpiece is greatly reduced.
In addition, if the machining path is determined based on the maximum machining amount of a given tool and the path length is predetermined, the maximum actual removal amount of the constituent material is different to be removed. It will be determined based on the geometric shape.

That is, according to the present invention, machining path determination and path data generation are not limited to the finished part geometry 340 of the workpiece, but to the different geometry 330a, 330b and maximum machining amount to be removed. Will also be involved.
Therefore, according to the control data generation method of the present invention, the air cutting time (non-cutting time) is shortened, and the machining time when machining the workpiece 150 from the blank state to the finished part is performed. Can be considerably shortened.

In the second embodiment of the control data generation method in the present invention, a plurality of machining paths are determined in order.
That is, after a given tool 130 moves through the determined machining path, and before the next machining path is determined, a different geometry is always determined depending on the current machining state. Is something that can be done.
That is, in the machining time t _n, geometry model data of the time when it is generated, the workpiece from to generate the machining geometry model data before the machining time t _n-1 150 machining states are detected.
Therefore, the machinability geometry at the machining time t _n, the difference between the machining geometry at the present time (present time difference) is determined.

3a-3d also show simple examples of blank geometry, machining geometry, different geometry and finished part geometry.
Here, the machining geometric shape 320 is an intermediate state of the workpiece, and is the machining geometric shape at the first machining time t1 that is the first.
FIG. 4a illustrates the machining geometry 420 at the second second machining time t2 and illustrates the workpiece in the second intermediate state.
More specifically, the material of construction comprises a first machining time t1 and a second machining time t2 with one or more predetermined tools 130 along one or more machining paths. In the meantime, it has been removed from the workpiece in the upper left part.
Also, in FIG. 4b, a second machining geometry 420 of the workpiece in the intermediate state at a second machining time t2, which is the second, and a finished part geometry 340 that is a finished part. By comparison, new current geometric shape differences 430a, 430b can be recognized and shown.
Then, based on the different geometric shapes 430a and 430b, a new second machining path is determined, and the next path data in the second machining path is generated.

FIG. 5 is a flowchart showing a method for generating control data according to the second embodiment.
In other words, at the machining time tn, the machining geometric shape model data in the intermediate state at such time is generated in the “step of generating the nth machining geometric shape model data” represented by S501.
Then, in order to generate the nth different geometric shape model data in the “step of generating the nth different geometric shape model data” represented by S502, Based on the comparison with the finished part geometry, it is recognized by comparing with the current machining geometry at the nth machining time tn.

Thus, the completed part geometric shape model data is again required to compare the current machining geometric shape with the completed part geometric shape.
FIG. 5 shows the n-th repetition of steps S201 to S204, which is machining.
Here, in the embodiment shown in FIG. 5, the process of providing the finished part geometric shape model data is not set.
This is because the finished part geometric shape model data is already provided in the first order of the steps of the generation method of the present invention, and the finished part geometric shape model data is no longer the first order repetition. This is because it is assumed that it is not necessary to provide in two order.

Next, in the “step of selecting a tool as a predetermined tool” represented by S503, one tool is selected as the predetermined tool.
The predetermined tool in this case is a tool arranged in the control device 110 and is controlled as the predetermined tool 130 on the workpiece 150 in order to remove the constituent material of the workpiece 150.
In other aspects, details are not shown here, but the machine tool 100 is provided with only one tool, and the other tools 141a to 141d are accommodated in the tool case 140 or the tool. It is assumed that the case 140 is not mounted on the machine tool 100 and is not executed in the step S503.

Moreover, the machine tool 100 includes a plurality of tools 141a to 141d in the tool case 140, which have different tool characteristics, and the following two tool characteristics are particularly important.
The first tool property is that the tool selected as the predetermined tool for the nth machining pass may be equal to the predetermined tool for the n-1th machining pass. . In this case, the tool deployed in the control device 110 is not changed.
Also, the second tool characteristic is that one tool is selected in step S503 as a predetermined tool for the nth machining pass, which is determined for the n-1st machining pass. That is not the same as the tool.
In this case, the tool change is determined in the “step for determining tool change” represented by S504. That is, the tool deployed in the control device 110 is changed from the tool case 140 to the tool selected as the predetermined tool.
For this purpose, the machine tool 100 includes a tool changing device 142 for changing the tool 130 provided with the control device.

That is, during machining of the workpiece 150 from the blank state to the finished state, based on the material environment of the workpiece that has not yet been removed, i.e., the current geometry of the workpiece geometry Based on the difference, the predetermined tool can be changed.
Specifically, for example, if the controller 110 is first equipped with a tool with a large diameter in order to actually machine as much machining as possible, it is possible to further determine different geometric shapes. The path cannot be determined.
Therefore, a given tool must remove material from the workpiece so as not to accidentally remove the finished part geometry of the workpiece.
Therefore, it is necessary to select a tool having a small diameter from the tool case 140 and replace it with a predetermined tool having a large diameter.

Next, in the “step of generating nth pass data” represented by S505, the nth machining pass is determined based on the generated nth pass data.
The predetermined tool or any new predetermined tool can then be moved to remove a specific current difference component of the workpiece geometry by feeding at the machining time tn.
In the “step of generating n-th path data” represented by S505, the n-th path data is generated by recognizing the feed speed and the tool directionality of a predetermined tool with respect to the workpiece. Can move the determined nth machining path.

According to the present invention, the nth pass data is generated based on the current difference in workpiece geometry at the machining time tn.
Then, when moving the n-th machining path based on the maximum machining amount of the predetermined tool for the n-th machining path, the predetermined tool for the n-th machining path is used to move the workpiece per unit time. Most of the particular nth different geometry can be removed to the maximum.

This is the same as the first embodiment for generating the control data in steps S201 to S204. After the tool determined for the nth machining path moves through the nth machining path, a new machining geometry is generated.
Here, in the “step of generating the (n + 1) th machining geometric model data” represented by the next step S506, the tool determined for the nth machining path represents the nth machining path. After moving and removing the predetermined material, the (n + 1) th machining geometry is generated as a new current machining geometry at machining time tn + 1.

Subsequently, the “step of generating (n + 1) th different geometric shape model data” represented by S507 and the “step of selecting one tool as a predetermined tool” represented by S508 are continued.
If the tool selected in step S508 is not the same as the predetermined tool for the n-th machining pass, there is an additional “step for determining tool change” represented by S509.
Therefore, for the (n + 2) th machining path flow, “generation process for generating the (n + 1) th path data” represented by S510, and “generation for generating the (n + 2) th machining geometric model data represented by S511. The process will continue.

This pattern and the steps S501 to S511 can be repeated, respectively, until the machining geometry of the workpiece determined in step S511 is equal to the finished part geometry of the workpiece. is there.
In doing so, everything removed from the workpiece to reach the finished part geometry has been removed.

The third embodiment of the present invention is another method for generating control data, as shown in the flowchart of FIG. The control data generation method further includes a “generation step of generating machine tool geometric shape model data” represented in step S604.
That is, as shown in FIG. 6, the generation method includes “a generation step in which the nth machining geometry generates model data” represented in step S601 and “finished part geometry” represented in step S602. Step of providing model data ”,“ Step of generating nth different geometric model data ”represented by Step S603, and“ Step of generating machine tool geometric shape model data ”represented by Step S604 And “a step of generating pass data for the n-th machining pass” represented by step S605.

Optionally, the steps S601 to S605 are part of the method of the present application, and such steps can be repeated as in the second embodiment.
Here, the machining path is repeatedly determined. In this case, in the “step of providing completed part geometric model data” represented in step S602, as in the second embodiment, in order to determine the first machining path, the completed part geometric model has already been determined. If data was provided, further implementation may not occur arbitrarily.

  In step S604, the machine tool geometric shape model data includes the current machine tool geometric shape, the predetermined tool 130, and the control device 110 at the specific n-th machining time tn generated in step S601. Generated by suggesting a current machine tool geometry based on the elements and the current relative direction and relative position of the clamping means 120 of the machine tool 100 for clamping the workpiece 150. .

In addition, when the tool 130 for the nth machining path moves in the nth machining path in the “step for generating the nth path data” represented in step S605, the nth machining process is performed. The path is determined so that the elements of the machine tool 100 and the elements of the machine tool 100 other than the predetermined tool 130 including the workpiece 150 do not collide.
In particular, the n-th machining path is determined such that the control device 110 in the machine tool 100 does not collide with machine tool elements such as the clamping means 120.

Furthermore, once the nth machining path is determined so that the elements of the controller 110 and the clamped workpiece do not collide, the predetermined tool 130 only removes the predetermined material. Then, it comes into contact with the workpiece 150.
In addition, this requires a comparison between the machine tool geometry model data and the machine geometry model data of the workpiece 150 at a particular machining time tn.
Then, based on the comparison between the machining geometry model data and the machine tool geometry model data, the machine tool in a specific element of the control device 110 for the position and location of the clamped workpiece 150 is determined. The location and position information of the clamping means 120 for all 100 elements will be known.

Further, in step S605, only one machining path is determined and can be moved with a predetermined tool for the nth machining path. Unexpected collisions such as a collision between the 110 element and the workpiece or a collision between the control device 110 element and the machine tool 100 element can be prevented.
Here, if an element of the control device 110 collides with the machine tool 100 or the workpiece 150, the predetermined tool 130 cannot move further in the machining path.
Therefore, the path calculation in this mode is a further prior collision check.

In the embodiment of the control data generation method of the present invention, when the machining path is determined and then the path data is generated, the maximum machining amount is achieved.
Then, when the predetermined tool 130 moves through the determined machining path, the machining path has a curve that is a complex profile due to the determined different workpiece geometry in the embodiment. become.

Accordingly, when the predetermined tool is moving along the machining path, the orientation of the predetermined tool 130 with respect to the clamped workpiece 150 depends on the profile (shape) of the machining path and is indicated in the generated path data. As shown, it depends on the determined current geometric shape difference.
Furthermore, the feed rate of the predetermined tool 130 along the determined machining path varies based on the path data, and depending on the different geometry, the maximum machining amount of the predetermined tool is determined. Each can be achieved along the machining path.

Apart from the changing tool orientation, this further leads to a constant change in feed rate as it moves along the determined machining path.
Here, the work amount of the predetermined tool is generated by the force and torque acting on the predetermined tool when moving along the determined machining path.
Thus, the work of the tool is higher than the prior art method, as expected. It should be noted that this results in a synergistic effect on all feed values of at least five axes and the work of a given tool 130.

Thus, when a machining path is determined and path data is generated, it is only necessary to determine the machining path and generate the path data.
That is, depending on the generated path data, while moving through the determined machining path, the work of a given tool generated by force and torque is either the maximum allowable work or one of the given tools 130 or The two maximum work values are never exceeded.

Further, a machining path is determined based on acceptable performance parameters and / or dynamic characteristics of the machine tool 100, and path data is generated.
That is, the machining path is determined and the associated path data is only generated, the acceptable performance parameters of the machine tool 100 are not excessive, and the dynamic characteristics of the machine tool 100 are expected. Takes a value within the range.
This means that a machining path is determined based on the maximum allowable performance parameter and the dynamic characteristics of the machine tool 100 and associated path data is generated.
The dynamic characteristics of the machine tool 100 include the directionality, mobility, linear axis feed value and / or rotation axis value (rotation axis feed value) of the control device 110.

  FIG. 7 is a specific example of a generation apparatus 700 that generates control data, and is based on one embodiment of the control data generation method of the present invention.

In addition, the generation device 700 that generates control data preferably includes a machining geometric shape model data generation device 701 and a completed part geometric shape model data provision device 702.
Furthermore, the generation device 700 for generating control data includes a different geometric shape model data generation device 703 connected to the machining geometric shape model data generation device 701 and the finished part geometric shape model data generation device 702. It is preferable.
Further, the generation device 700 that generates control data includes a path data generation device 705, and the path data generation device 705 is preferably connected to at least a different geometric shape model data generation device 703.

  Here, the machining geometric shape model data generation device 701 displays the machining geometric shape model data of the workpiece 150 at any machining time and the current removal state of the workpiece 150 at the machining time. Suitable for repeatedly generating the machining geometry shown.

  Further, the completed part geometric shape model data providing device 702 is suitable for providing the complete part geometric shape model data, which is a work piece on the machine tool 100 in one or more machining processes. It corresponds to the finished part geometry on the workpiece 150 that is achieved after the workpiece 150 is machined.

Further, the different geometric shape model data generation device 703 compares the respective machined geometric shape model data with the finished part geometric shape model data, and each machine processing of the workpiece 150 at a specific time. Suitable for generating different geometric shape model data for geometric shapes.
The different geometric shape model data indicates the current geometric shape difference between the machine geometric shape at the current time and the workpiece 150 having the geometric shape of the finished part.

In other words, the different geometric shapes of the workpiece at the time of specific machining correspond exactly to the geometric shapes made of the material of the workpiece 150 at the time of machining.
The different geometric shapes of such workpieces can then be removed from the workpiece 150 by one or more predetermined tools 130 to obtain a finished part geometry of the workpiece 150. It corresponds to.

The path data generation device 705 is suitable for determining the machining path based on the determined current geometric shape difference, and the predetermined tool 130 corresponds to the current geometric shape difference determined by the feed. It is preferable to move to remove the material.
According to the present invention, the machining path is determined based on the current geometric shape difference of the workpiece 150 determined by the different geometric model data generation device 703.

  In addition, the path data generation device 705 generates path data based on the generated different geometric model data, feed data, and path data indicated by the tool orientation of a predetermined tool with respect to the workpiece 150. The predetermined tool 130 moves along the determined machining path.

  In this machining course, the path data depends on the maximum machining amount of the predetermined tool 130, and when the predetermined tool 130 moves on the machining path determined by the path data, the workpiece 150 per unit time is transferred to the workpiece 150. It is generated by the path data generating device 705 so as to satisfy the condition for removing the determined maximum amount of the current geometric shape difference.

Furthermore, the generator 700 for generating control data preferably includes a machine tool parameter detector 706 for detecting the maximum allowable performance parameters and / or dynamic characteristics of the machine tool 100.
The machine tool parameter detection device 706 is connected to at least the path data generation device 705, and the path data is determined depending on the maximum allowable performance parameter and / or dynamic characteristics of the machine tool 100. is there.

In addition, the generating device 700 for generating the control data is a machine tool geometry for generating machine tool geometry model data indicating the current machine tool geometry at any machining time of the workpiece. A model data generation device 707 is preferably included.
Here, the current machine tool geometry is relative to the current relative direction in the clamping means 120 of the machine tool 100 for clamping the predetermined tool 130, the elements of the control device 110 and the workpiece 150. Includes position.

Further, the machine tool geometric shape model data generation device 707 is preferably connected at least to the path data generation device 705.
Then, based on the machine tool geometric shape model data and / or on the basis of the comparison of the machine tool geometric shape model data having the machining geometric shape model data, the path data generation device 705 further determines. It is what is done.
Accordingly, it is possible to prevent a collision between an element of the machine tool 100 and an element of the machine tool 100 other than the predetermined tool 130 or the workpiece 150 while the predetermined tool 150 moves on the determined machining path. .

Furthermore, the generation device 700 that generates control data preferably includes a tool selection device 708 connected to the path data generation device 705.
Such a tool selection device 708 is optimal for repetitively selecting a tool for obtaining a relatively high maximum machining amount depending on the current geometric shape difference model data such as a predetermined tool.
For this purpose, the tool selection device 708 is connected to a tool procurement detection device 710 and a tool change determination device 709.

Further, the tool procurement detection device 710 detects tool procurement of the machine tool 100.
This is because the tool procurement detection device 710 detects the storage of the tools 141a to 141d and 130 on the machine tool 100, and detects the identification of each of the tools 141a to 141d and 130.
Therefore, the tool procurement detection device 710 detects all the tools 141 and 130, and further detects the respective maximum machining amount and the maximum work amount value of each tool, so that the tool selection device 708 and the tool procurement detection device 710 are used. Means that the predetermined tool 130 is determined.

The tool selection device 708 can determine one tool as the predetermined tool 130 depending on the maximum machining amount of the tool.
The tool change determining device 709 includes a predetermined tool 130 on the machine tool and a tool having a machine tool control device 110.
Furthermore, when the tool selection device 708 selects a tool that is a predetermined tool 130 for another machining path and is different from the tool previously provided in the control device 110 of the machine tool 100, the tool change is performed. The determination device 709 determines a tool change.
Accordingly, the tool having the control device 110 of the machine tool 100 is changed for the predetermined tool 130 determined for the next machining pass.

Such tool changes are necessary. For example, if the material has not been removed from the workpiece 150, but a different machine shape has the pre-determined tool 130, a further machining path can no longer be determined.
Thus, such materials will remove only the different geometric shapes so that they do not accidentally damage the finished part geometry.

Further, the generation device 700 for generating the control data is based on the respective model data, the blank geometry, the machining geometry, the finished part geometry, the different geometry, or the machine tool geometry. It is preferable to include a representation device 711, ie a display device, for visually representing or displaying a virtual 3D model of the geometric shape.
Here, the expression device 711 is a component that can visually represent a specific virtual 3D model or a plurality of geometric shapes simultaneously indicated by model data.
However, the representation device 711 can also visually represent machining paths determined by different geometric shapes of the workpiece.
Therefore, a manual operator of the machine tool 100 or of the generating device 700 for generating control data visually executes the generated control data, the determined machining path, the generated control data or the machining status of the workpiece. Or check.

Further, in the specific correspondence of the generation device 700 that generates the control data of the present invention, the generation device 700 is directly connected to the machine tool 100 through an interface.
Here, as one of the specific correspondences of the control data method of the present invention, the generation device 700 for generating the control data directly controls the workpiece 150 while the workpiece 150 is being processed by the machine tool 100. It is a device that generates data.
This is because the path data generation device 705 generates path data and is directly passed to the control device 110 of the machine tool 100, and the control device 110 determines the machine determined based on the generated path data. A predetermined tool 130 is directly moved along the machining path while being controlled, and a predetermined constituent material is removed from the workpiece 150.

After the predetermined tool 130 moves along the determined machining path, a new machining geometry of the workpiece will result.
The machined geometric shape is indicated by the machined geometric shape model data generation device 701 through the generated machined geometric shape model data.
That is, if the machining geometry does not match the intended finished part geometry, the generator 700 that generates control data will generate control data for the next machining.
To this end, different geometric model data based on the current machining geometry is generated again, so that other machining paths are again determined with the associated path data.

In addition, although it is an optional step, the tool change determination device 709 performs an actual tool change.
Thus, like the tool 130 determined for the next machining pass, the tool selection device 708 is faster than a tool other than the predetermined tool 130 is selected, and the tool 130 previously provided to the control device 110 is , And are changed by other tools 141a to 141d in the tool case 140.
Then, after the tool change is performed on the machine tool 100, another machining path is determined by the path data generation device 705 that generates path data.
That is, according to the present invention, this is as large as possible when a new predetermined tool 130 moves along the determined machining path and can reach the maximum machining amount of the predetermined tool 130. It is based on so-called different geometric shapes determined at the present time on condition that the processing amount is achieved.

Further, the path data passes directly on the machine tool 100 through the interface, and the machine tool 100 is based on the control data generated by the control device 110 along the determined machining path and based on the generated path data. By controlling the predetermined tool 130, the predetermined constituent material is removed from the workpiece.
And according to the second embodiment of the generation method for generating the control data of the present invention, this can be repeated until the finished part and the finished part geometric shape of the workpiece 150 respectively reach.

  The high amount of data, such as generated model data, technical information, and machine specific data, that can be considered in this way, during the machining of the workpiece 150, even when considering the computational performance of today's computers, With respect to controlling 100, it is difficult for the control data generation apparatus 700 directly connected to the machine tool 100 to directly provide an “online solution”.

This is because the apparatus 700 for generating control data according to another embodiment of the present invention is not connected to the actual machine tool 100 but is connected to a simulation apparatus for simulating a virtual machine tool through an interface. Because.
Note that such a simulation apparatus for a virtual machine tool is optimal for simulation of machining of a workpiece on the machine tool, and is disclosed, for example, in DE102006043390 (A1) by the applicant of the present application.

In this case, the machining path or continuous machining path and any tool changes are determined by generating corresponding path data.
That is, it simulates the machining of the workpiece on the machine tool, performs virtual machining of the virtual workpiece on the virtual machine tool, simulates the iterative approach under the optimum conditions, and operates or evaluates on the virtual machine tool It is determined by simulating the above and includes all the characteristics necessary for controlling the machining process.

  In this case, the optimum condition is based on the machining path or continuous machining path, and related path data, machine path data, machining path, and path data determined by the method of the present invention. The processing time of the object is shortened by an arbitrarily selected or determined machining path.

In this embodiment, the generation device 700 that generates control data further includes a machining simulation device 712 that simulates the movement of a machining path determined based on the path data generated by the path data generation device 705 and the virtual determination tool. And a machining geometry model data generation device 701 for generating machining geometry model data in a virtual 3D model of the machining geometry of the virtual workpiece.
Such model data represents the virtual removal state of the workpiece in the machining time after the movement of the machining path determined by the virtual predetermined tool is simulated by the machining simulation device 712.

The completed part geometric shape providing device 702 provides completed part geometric shape model data of the completed part geometric shape virtual 3D model.
Further, the different geometric shape model data generation device 703 generates the current geometric shape difference model data based on the comparison between the completed part geometric shape model data and the machined geometric shape model data. .
The current geometric shape difference model data corresponds to different geometric shapes made of constituent materials to be removed from the virtual workpiece to finally reach the finished part geometric shape.

The path data generation device 705 is a device that generates path data based on different geometric shape model data.
Such path data is obtained when the machining simulation device simulates the movement in the second machining path depending on the maximum machining amount of the predetermined tool, and the virtual predetermined tool has different geometries of the workpiece per unit time. The machining path is determined under such conditions that the maximum amount of geometric shape is removed.

According to an aspect of a generating device 700 that generates such control data or a virtual machine tool that is connected to the generating device 700 that generates control data, such generating device includes the generated control data, the determined machining path, the associated path data. And preferably includes a saving means for saving any determined tool changes.
Thus, after the simulation is finished, such data is transferred to the actual machine tool, which uses the actual predetermined tool based on the control data by using the actual predetermined tool based on the control data. Can be processed.

It should be noted that the specific examples and figures described here are merely examples of the present invention, and are not limited by them without any particular reason.
It is also possible to expand the generation method of the present invention and combine the features of each embodiment to provide further specific examples in order to optimize the application of the present invention. That is, if such improvements are apparent to those skilled in the art, they are suggested by the specific examples described above.

Further, the generation apparatus 700 that generates the control data shown in FIG. 7 arbitrarily has many technical features.
For example, according to the first embodiment as a generation method for generating control data, the generation device 700 for generating control data is a machining geometric model data generation device 701, a finished part geometric shape model. Only the data generation device 702, the different geometric model data generation device 703, and the path data generation device 705 are requested.
However, as illustrated in FIG. 7, the generation device 700 for generating all control data has an arbitrary configuration with respect to the first embodiment, which is a control data generation method.

DESCRIPTION OF SYMBOLS 100: Machine tool, 110: Control apparatus, 120: Clamp means, 130: Tool, 140: Tool case, 141a-d: Tool, 142: Change apparatus, 310: Blank geometry, 320: Machining geometry (Machining geometry on workpiece in intermediate state), 330a, 330b: Constituent material (constituent material to be removed), 340: Finished part, 420: Second machining geometry of workpiece in intermediate state 430: Completed part geometric shape in completed part, 430a, 430b: Current geometric shape difference, 700: Generation device, 701: Machining geometric shape model data generation device, 702: Completed part geometric shape model data Generation device, 703: different geometric model data generation device, 705: path data generation device, 706: machine tool path Meter-detecting device, 707: machine tool geometry model data generation apparatus, 708: tool selection device, 709: Tool change determining device, 710: Tool procurement detector

Claims (16)

Control data for generating control data for controlling a predetermined tool (130) in a machine tool (100) for machining a clamped workpiece (150) from a blank state to a finished part. A control method of a machine tool (100) including a control device for controlling a predetermined tool (130) in a generation method, wherein the predetermined tool (130) is in a three-dimensional direction with respect to the workpiece (150). A method of generating control data, wherein the control data can be freely moved and the free direction of the tool can be controlled with respect to at least five axes, and the control data generation step further includes the following steps.
-For machining geometry (320) in workpiece (150), generate machining geometry model data (S201) indicating the removal state in workpiece (150) at the time of specific machining. Process—Providing (S202) a completed part geometry model data indicating the geometry (340) of the completed part on the workpiece (150) —removal to make the geometry (340) in the completed part Generating (S203) different geometric shape model data representing different geometric shapes (330a, 330b) composed of the material to be performed-based on the different geometric shape model data, the predetermined tool (130) Generate path data indicating what speed and in which tool direction the machining path moves relative to the workpiece (150). (S204) to a process,
Based on the maximum amount of machining for a given tool (130), the largest part of the different geometry (330a, 330b) of the workpiece (150) per unit time is removed to the maximum while moving the machining path. While moving a machining path determined based on different geometric shapes (330a, 330b),
The path data, different geometries (330a, 330b) step of generating a predetermined tool (130) for changing the feed direction and directional relates workpiece (150) clamped on the basis of The step of generating machining geometric shape model data, the step of generating different geometric shape model data, and the step of generating path data based on the different geometric shape model data are performed once or plural times in this order. A control data generation method comprising repeatedly including:
While the predetermined tool (130) for the second machining path moves through the second machining path based on its maximum machining amount, a specific second different geometry per unit time is obtained. A predetermined tool (130) for the first machining pass is conditioned on the basis of the first pass data under conditions that remove most of the predetermined material in the geometrically shaped workpiece (150). machining path to move, after generating the second path data based on a second, different machining geometry model data, specific second machining definitive when to repeat once the step of sometimes claims, characterized in that the second machining geometry model data corresponding to the second geometric shape of at least the workpiece, and a second, different machining geometry model data to generate Item 1. Control data generation Law. The control data generation method according to claim 2, wherein the following steps are repeated once or a plurality of times.
-Tool procurement data relating to tool procurement of the machine tool (100) and providing tool procurement data indicating which tool characteristics are related to the tool characteristics of the tool procurement of the machine tool
-Selecting a tool with a relatively high maximum machining amount based on different geometric model data for the next machining pass and optionally a given tool for repeating the process once or multiple times
-Determining (S504, 509) to replace the tool selected for the next machining pass with the previously selected tool (130) based on (100) tool procurement of the machine tool The path data is additionally generated based on performance parameters and / or dynamic characteristics of the machine tool (100) ;
The predetermined tool (130) does not exceed a maximum performance parameter and / or a maximum dynamic characteristic of the machine tool when moving along the machining path determined based on the path data. The generation method of the control data as described in any one of Claims 1-3 . The path data is additionally generated based on one or more maximum load values of at least one predetermined tool (130) ;
In addition, when the predetermined tool (130) moves along the machining path determined based on the path data, the load of the predetermined tool does not exceed the maximum load of the predetermined tool (130). The generation method of the control data as described in any one of Claims 1-4 . The machine tool geometry generates a machine tool geometry model data indicating (S604) to process the workpiece (150) at a particular machine time, a one or more times repeatedly generate process control data ,
The machine tool geometry includes the relative orientation and relative position of a predetermined tool (130) , the relative orientation and relative position of a control device, and the fixing in the machine tool for clamping the workpiece (150). Including the relative orientation and relative position of the tool (120) ;
When a machining path determined based on the generated path data is moved by a predetermined tool (130), a collision between an element of the machine tool (100) and an element of the machine tool (100), a predetermined tool (130) The path data is based on the machine tool geometry model data and / or the machine tool geometry , provided that collisions between other machine tool (100) elements and the workpiece (150) are prevented. The control data according to any one of claims 1 to 5 , wherein the control data is additionally generated based on a comparison between the geometric shape model data and the machining geometric shape model data at a specific machine time. Generation method. The model data generating a blank geometry, a machining geometry, a finished part geometry, a different geometry, and / or a virtual three-dimensional model of the machine tool (100) ; method for generating control data according to any one of claims 1 to 6, characterized in that they comply with the. The method of generating control data according to claim 7 , wherein the path data is generated based on a simulation of machining on a virtual workpiece in a virtual machine tool, the simulation including the following steps.
-Create a virtual 3D model of the workpiece in its original state
Generating first path data for determining a first machining path for a virtual predetermined tool;
Simulating the movement in the determined first machining path based on the first path data generated by the virtual predetermined tool
-Machining geometry model data for a virtual three-dimensional model of machining geometry of a virtual workpiece , machining after the first determined machining path is moved by a virtual predetermined tool Process for generating machining geometry model data indicating the virtual removal status of the workpiece in time
-Providing completed part geometry model data of a virtual 3D model of the finished part geometry that indicates the geometry of the finished part on the virtual workpiece
-Generating different geometric model data indicating different geometric shapes of said material to be removed from the virtual workpiece to reach the geometric shape of the finished part
-The virtual predetermined tool removes most of the different geometric shapes of the workpiece per unit time during the simulation of moving the second machining path based on the maximum machining amount of the predetermined tool under conditions in which, based on different geometry model data, generating a second path data for determining the second machining path The path data is generated according to the path data generation (S204) step , and the machining path is determined based on a plurality of internally connected machining path sections and different geometric shapes. is generated by a point, the first machining path portion is determined starting from the starting point of the machining path on the basis of different geometric shapes machining amount from the starting point of the mechanical path is maximized, also, Based on different geometric shapes where the machining amount is maximized starting from the end of the previous machining pass , and the machining pass is connected to the end of any of the internally connected machining parts is determined starting from parts, the first machining part and along the other machining unit, characterized in that the material from the finished part geometry is determined so as not to be removed Method for generating control data according to any one of Motomeko 1-8. Control data generation device for carrying out the control data generation method according to any one of claims 1 to 9, wherein the clamped workpiece (150) is changed from a blank state to a finished part. A control data generation device for controlling a predetermined tool (130) in a machine tool (100) for the machine tool (100), the machine tool (100) including a control device for controlling the predetermined tool (130), the control device Is capable of controlling a predetermined tool (130) with respect to a workpiece (150) clamped by three-dimensional free movement and at least five-axis tool free orientation, and includes the following units: Control data generation device .
A machining geometry model that generates machining geometry model data in the machining geometry (320) of the workpiece (150) indicating the state of the workpiece (150) to be removed in a particular machining time Data generation unit (701)
Complete part geometry model data providing unit (702) for providing completed part geometry model data indicating the geometry (340) of the finished part on the workpiece (150)
Different geometric shapes for generating different geometric shape model data showing the different geometric shapes (330a, 330b) composed of the material to be removed to make the geometric shape (340) in the finished part Model data generation unit (703)
A path data generating unit (generally generating path data indicating a machining path on which a predetermined tool (130) should move with respect to the workpiece (150) at which feed speed and in which tool direction based on different geometric model data. 705),
When moving the machining path based on the maximum machining amount for the predetermined tool (130), the predetermined tool (130) is large in different geometric shapes (330a, 330b) of the workpiece (150) per unit time. While moving a machining path determined based on different geometric shapes (330a, 330b), provided that the part is removed to the maximum
The path data is a path data generation unit that creates a predetermined tool that changes the feed direction and direction of the workpiece (150) clamped based on different geometric shapes (330a, 330b). When the control data generation device (700) moves the machining path determined based on the path data by the predetermined tool (130), the maximum performance parameter and / or dynamics of the machine tool (100). Generating a machine tool parameter detection unit (706) for detecting an acceptable performance parameter and / or a dynamic characteristic in the machine tool (100 ) and the path data, with the additional condition that the mechanical characteristic is not exceeded 11. The control data generation device according to claim 10, further comprising a path data generation unit (705) . When the control data generation device (700) moves along the machining path determined based on the path data, the one or more load values of the predetermined tool (130) are A tool characteristic detection unit (706) for detecting a tool characteristic of the machine tool (100) including one or more maximum load values of the tool, with the additional condition that the maximum load value of the tool (130) is not exceeded; and 12. The control data generation apparatus according to claim 10 or 11 , comprising the path data generation unit (705) for generating the path data . The control data generator (700) has a different geometry for a given tool for the next machining pass and a tool procurement sensing unit (710) for detecting tool procurement of the machine tool (100). A tool selection unit (708) for selecting a tool (130) from detected tool procurement having a relatively high maximum machining amount based on the model data, and tool procurement of the detected machine tool (100) based on, the next machining tool (130) for determining the tool exchange of the previous predetermined tool by a predetermined tool (130) selected for the path replacement determination unit (709), together with a,
The tool change determination unit (709) is assumed that a tool other than the previous predetermined tool is used for the next machining pass from the tool procurement of the machine tool tool (100) by the tool selection unit to the next of the predetermined tool. The apparatus for generating control data according to any one of claims 10 to 12 , wherein a tool change is determined when a machining path is selected . The control data generation apparatus (700) further includes a machine tool geometric shape model data generation unit (707) , and the machine tool geometric shape model data generation unit is configured to specify a specific shape of the workpiece (150) . A machine tool geometry for generating machine tool geometry model data indicating a current machine tool geometry at a machining time, the machine tool geometry being a direction and position of a predetermined tool (130) , control Including the direction and position of the elements of the device, the direction and position of the fixture for clamping the workpiece,
When the machining path determined by the path data is moved by at least one predetermined tool (130), the collision between the element of the machine tool (100) and the element of the machine tool (100), the predetermined tool A path data generation unit (705) based on the machine tool geometry model data and / or on the condition that collisions between elements of the machine tool (100) other than the workpiece (150) are prevented a machine tool geometry model data, the machine tool geometry model data at a particular machining, based on a comparison of one any of claims 10 to 13, characterized by further generating the path data The control data generation device according to Item. A control data generator (700) is provided for each geometry of a blank geometry, an intermediate geometry, a geometry of a finished part, a different geometry, and / or each virtual 3D in the machine tool (100) . 15. The control data generation device according to claim 10 , further comprising a display unit (711) for visually displaying the model. The control data generation device according to any one of claims 10 to 15, wherein the path data generation unit (705) is based on a simulation of machining a virtual workpiece in a virtual machine tool. The path data is generated, and the control data generation device further includes a machining simulation unit for simulating the movement of the machining path determined based on the path data generated by the path data generation unit using a virtual predetermined tool. ,
The machining geometric model data generation unit (701) is a workpiece at the time of machining after the movement of the first determined machining path by the virtual predetermined tool is simulated by the machining simulation unit. Shows the virtual removal state at, generates machining geometry model data for a 3D model of machining geometry on the virtual workpiece,
The completed part geometric shape providing unit provides completed part geometric shape model data in a virtual three-dimensional model related to the geometric shape of the completed part indicating the geometric shape of the completed part in the virtual workpiece;
The different geometric model data generation unit (703) generates different geometric model data indicating different geometric shapes of the material to be removed from the virtual workpiece to reach the geometric shape of the finished part. And
The path data generation unit (705) is configured so that the virtual predetermined tool is subjected to a load per unit time when simulating the movement of the second machining path by the machining simulation unit based on the maximum machining amount of the predetermined tool. Control characterized by generating second path data for determining a second machining path based on different geometric shape model data under the condition of maximally removing most of the different geometric shapes of the workpiece Data generator.

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