WO2016082237A1 - Look-ahead rolling processing method in computer numerical control (cnc) system - Google Patents
Look-ahead rolling processing method in computer numerical control (cnc) system Download PDFInfo
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- WO2016082237A1 WO2016082237A1 PCT/CN2014/092985 CN2014092985W WO2016082237A1 WO 2016082237 A1 WO2016082237 A1 WO 2016082237A1 CN 2014092985 W CN2014092985 W CN 2014092985W WO 2016082237 A1 WO2016082237 A1 WO 2016082237A1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
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- the invention relates to a CNC numerical control system solution.
- the post-processor of the numerical control equipment CNC system decomposes the complex path into a series of small path segments (such as straight segments or arc segments) according to the processing precision requirements, and then the relevant interpolator pairs in the numerical control system Interpolation is performed for each specific micro path segment.
- Acceleration and deceleration is an important control function to be completed in the interpolation operation.
- the forward-looking planning control is generally adopted.
- the forward-looking processing function is one of the iconic functions of the modern numerical control system.
- the forward-looking design is directly related to the processing efficiency and the smoothness of the movement of the numerical control machine tool.
- the interpolator can adaptively adjust the feed rate according to the machine characteristics and processing parameters, thereby obtaining the maximum processing efficiency and avoiding the feed rate.
- a changeable technology which can effectively shorten the processing time, reduce the vibration of the machine tool, protect the tool from impact, and improve the processing quality. It is an important way to improve the processing efficiency on the basis of ensuring the smoothness of the motion. It is indispensable in the high-speed and high-precision CNC system.
- the main task of forward-looking processing is to obtain path information and speed planning based on machine motion constraints such as speed, acceleration, and jerk, and selected acceleration and deceleration laws. With the gradual improvement of precision and speed requirements of modern CNC machining, the forward-looking has received extensive attention and research, and has gradually been popularized by high-end CNC systems to medium and low-end CNC systems.
- the forward-looking process in the prior art is to pre-analyze subsequent paths before interpolation, obtain information such as path length and speed constraints, and if it is found that it is necessary to pause or stop (for example, a large corner), the starting and stopping speed is zero, and then The path of the interval is for speed planning. If you encounter continuous micropaths and the paths are connected at a small angle, the above planning requires a lot of forward path segments, and the computer's cache resources are limited, so a "maximum lookahead segment" is generally set, for example, 2000. That is: if the 2000 segment path is continuously read, although the final segment end speed does not have to be zero, it is forced to zero, so that the speed forward planning can be performed. When there are many consecutive small paths, due to the limitation of the maximum number of forward-looking segments, acceleration and deceleration have to be performed in the middle, resulting in a decrease in efficiency.
- the object of the present invention is to provide a forward-looking scroll processing method for a numerical control equipment CNC system, which improves processing efficiency and processing quality without occupying more computer resources.
- the present invention provides a forward-looking scroll processing method for a numerical control device CNC system, comprising the following steps:
- a further improvement of the present invention is that in the steps c) and d), the speed planning adopts a trapezoidal speed curve, and in the reverse search, the interpolation output is performed with the maximum end point velocity in the following several paths as the boundary. Or scroll the plan again.
- a further improvement of the present invention is that in the step c), the speed planning adopts a global S-shaped speed curve, and the acceleration and acceleration are also set to zero.
- a further improvement of the present invention is that in the step d), in the reverse search, the following segments are used.
- the fastest speed of the joint is the boundary, and the interpolation output or re-rolling plan is performed.
- a further improvement of the present invention is that in the step d), when performing a reverse search, the path of 30%-50% of the number of segments is reversely searched from back to front.
- a further improvement of the present invention is that in the step b), when the current instruction type is ended, the delivery parameter indicates that scroll processing is not required.
- a further improvement of the present invention is that in the step b), when the current instruction type is paused, the delivery parameter indicates that scroll processing is not required.
- the tangential angle of the joint is calculated. If the angle is greater than the preset threshold, the transfer parameter indicates that the scrolling process is not required.
- a further improvement of the present invention is that in the step b), if the current number of segments has reached the maximum number of lookahead segments, the pass parameters indicate that scrolling processing is required.
- This embodiment discloses a forward-looking scroll processing method for a numerical control equipment CNC system, and the key steps are as follows:
- the interpolation output or re-rolling plan is performed with the maximum speed of the end points in the following several paths, and when the global S-shaped velocity curve is used, the following segments are used. S The maximum speed of the joint is the boundary, and the interpolation output or the re-rolling plan is performed.
- the invention adopts a clever method to improve the planning of the continuous micro path segment while ensuring that no more computer resources are occupied. Efficiency, shorten processing time; reduce processing speed fluctuations, improve processing quality; make the algorithm completely rid of the dependence on the "maximum forward-looking segment number", prevent the efficiency from being too small due to setting too small, too large setting will lead to Over-occupation of computing resources.
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Abstract
A look-ahead rolling processing method in a computer numerical control (CNC) system improves machining efficiency and quality without consuming more computer resources, the method comprising the following steps: determining a current instruction type, and reading a subsequent path into a buffer and obtaining a feature value of the subsequent path; according to the determination of the instruction type and the feature value of the subsequent path, transmitting a parameter to indicate whether the rolling processing still needs to be executed; setting a speed at an end point of a final path to be zero, while all of the speed, acceleration, jerk at a starting point of a first path remain constant, and planning the speeds for paths in a current buffer; if the transmitted parameter indicates no rolling processing needs to be executed, interpolating and immediately outputting all of the paths; if the transmitted parameter indicates the rolling processing still needs to be executed, interpolating and outputting only a part of the paths, and reversely finding a preset segment number of paths, taking a joining point having the maximum speed as a boundary, interpolating and outputting the paths in front of the boundary, and buffering the paths following the boundary for a next pass of rolling processing.
Description
技术领域Technical field
本发明涉及CNC数控系统解决方案。 The invention relates to a CNC numerical control system solution.
背景技术Background technique
现有技术中数控设备CNC系统的后置处理器按加工精度的要求将复杂路径分解成一系列的微小路径段（如直线段或圆弧段），再由数控系统中的各相关插补器对每一个特定的微小路径段进行插补运算。加减速是插补运算要完成的重要控制功能，在加减速控制方式中，有插补前加减速和插补后加减速之分。为了保证加工精度，一般采用前瞻规划控制，前瞻处理功能是现代数控系统的标志性功能之一，前瞻设计直接关系到数控机床的加工效率和运动平稳性。
In the prior art, the post-processor of the numerical control equipment CNC system decomposes the complex path into a series of small path segments (such as straight segments or arc segments) according to the processing precision requirements, and then the relevant interpolator pairs in the numerical control system Interpolation is performed for each specific micro path segment. Acceleration and deceleration is an important control function to be completed in the interpolation operation. In the acceleration/deceleration control mode, there are acceleration and deceleration before interpolation and acceleration and deceleration after interpolation. In order to ensure the processing accuracy, the forward-looking planning control is generally adopted. The forward-looking processing function is one of the iconic functions of the modern numerical control system. The forward-looking design is directly related to the processing efficiency and the smoothness of the movement of the numerical control machine tool.
前瞻(Look-ahead)
，顾名思义，就是预先分析后续路径，获取路径长度和速度约束条件等信息，使插补器能够根据机床特性和加工参数自适应地进行进给速度调整，从而获取最大加工效率并避免进给速度剧烈变化的一种技术，它能有效地缩短加工时间，减小机床振动，保护刀具免受冲击，提高加工质量，是在保证运动平稳性基础上提高加工效率的重要途径，在采用前加减速插补的高速高精度数控系统中不可或缺。前瞻处理的主要任务是获取路径信息，并根据速度、加速度和加加速度等机床运动约束条件和选定的加减速规律进行速度规划。随着现代数控加工对精度和速度要求的逐步提高，前瞻得到了广泛的关注和研究，并逐步由高档数控系统向中低档数控系统普及应用。Look-ahead
As the name suggests, it is to analyze the subsequent path in advance, obtain the path length and speed constraint conditions, etc., so that the interpolator can adaptively adjust the feed rate according to the machine characteristics and processing parameters, thereby obtaining the maximum processing efficiency and avoiding the feed rate. A changeable technology, which can effectively shorten the processing time, reduce the vibration of the machine tool, protect the tool from impact, and improve the processing quality. It is an important way to improve the processing efficiency on the basis of ensuring the smoothness of the motion. It is indispensable in the high-speed and high-precision CNC system. The main task of forward-looking processing is to obtain path information and speed planning based on machine motion constraints such as speed, acceleration, and jerk, and selected acceleration and deceleration laws. With the gradual improvement of precision and speed requirements of modern CNC machining, the forward-looking has received extensive attention and research, and has gradually been popularized by high-end CNC systems to medium and low-end CNC systems.
现有技术中的前瞻处理，是在插补前预先分析后续路径，获取路径长度和速度约束条件等信息，如果发现需要暂停或停止（比如说大转角）时，让起止速度为零，然后对该区间的路径进行速度规划。如果碰上连续微小路径，路径间均以小角度衔接，则上述规划需要前瞻非常多的路径段数，而计算机的缓存资源是有限的，所以一般会设置一个“最大前瞻段数”，比如说2000，即：如果连续读取了2000段路径，虽然最后一段终点速度不必为零，也强制它为零，以便好进行速度前瞻规划。当连续微小路径非常多时，因最大前瞻段数的限制，中间不得不进行加减速，导致效率下降。The forward-looking process in the prior art is to pre-analyze subsequent paths before interpolation, obtain information such as path length and speed constraints, and if it is found that it is necessary to pause or stop (for example, a large corner), the starting and stopping speed is zero, and then The path of the interval is for speed planning. If you encounter continuous micropaths and the paths are connected at a small angle, the above planning requires a lot of forward path segments, and the computer's cache resources are limited, so a "maximum lookahead segment" is generally set, for example, 2000. That is: if the 2000 segment path is continuously read, although the final segment end speed does not have to be zero, it is forced to zero, so that the speed forward planning can be performed. When there are many consecutive small paths, due to the limitation of the maximum number of forward-looking segments, acceleration and deceleration have to be performed in the middle, resulting in a decrease in efficiency.
发明内容Summary of the invention
为了克服现有技术存在的不足，本发明的目的在于提供了一种数控设备CNC系统前瞻滚动处理方法，其在不占用更多的计算机资源的前提下，提高了加工效率及加工质量。
In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a forward-looking scroll processing method for a numerical control equipment CNC system, which improves processing efficiency and processing quality without occupying more computer resources.
为达到以上目的，本发明提供了一种数控设备CNC系统前瞻滚动处理方法，包括如下步骤：To achieve the above objective, the present invention provides a forward-looking scroll processing method for a numerical control device CNC system, comprising the following steps:
a) 判断当前指令类型，将后续路径读入缓存并获得后续路径的特征值；a) determining the current instruction type, reading the subsequent path into the cache and obtaining the feature value of the subsequent path;
b) 根据对指令类型与后续路径的特征值的判断传递参数以区别是否还需进行滚动处理；b) passing parameters according to the judgment of the feature value of the instruction type and the subsequent path to distinguish whether scroll processing is still needed;
c)
设定最后一段路径的终点处速度为0，而首段路径的起点处速度、加速度、加加速均保持不变，对当前缓存中的路径进行速度规划；c)
Set the speed of the end of the last path to 0, and the speed, acceleration, and acceleration at the beginning of the first path remain unchanged, and speed planning the path in the current cache;
d)
当传递的参数表明无需进行滚动处理时，将全部路径插补立即输出；当传递的参数表明仍需进行滚动处理时，仅插补输出部分路径，并且从后至前反向搜索预定段数路径,
取衔接点速度最大处为界限，界限之前的插补输出，界限之后的缓存下来等待下一次处理。d)
When the passed parameters indicate that scrolling processing is not required, all path interpolation is immediately output; when the passed parameters indicate that scrolling processing is still required, only the partial path is outputted, and the predetermined number of paths are reversely searched from back to front.
Take the maximum speed of the joint point as the limit, the interpolation output before the limit, and the buffer after the limit waits for the next processing.
本发明的进一步改进在于，所述的步骤c）与步骤d）中，速度规划采用梯形速度曲线，在进行反向搜索时以后面若干段路径中的终点速度最大者为界，进行插补输出或再滚动规划。A further improvement of the present invention is that in the steps c) and d), the speed planning adopts a trapezoidal speed curve, and in the reverse search, the interpolation output is performed with the maximum end point velocity in the following several paths as the boundary. Or scroll the plan again.
本发明的进一步改进在于，所述的步骤c）中，速度规划采用全局S形速度曲线，加速度、加加速也均设为0。A further improvement of the present invention is that in the step c), the speed planning adopts a global S-shaped speed curve, and the acceleration and acceleration are also set to zero.
本发明的进一步改进在于，所述的步骤d）中，在进行反向搜索时以后面若干段 S
形衔接点的速度最大者为界，进行插补输出或再滚动规划。A further improvement of the present invention is that in the step d), in the reverse search, the following segments are used.
The fastest speed of the joint is the boundary, and the interpolation output or re-rolling plan is performed.
本发明的进一步改进在于，所述的步骤d）中，在进行反向搜索时，从后至前反向搜索30%-50%段数的路径。A further improvement of the present invention is that in the step d), when performing a reverse search, the path of 30%-50% of the number of segments is reversely searched from back to front.
本发明的进一步改进在于，所述的步骤b）中，当前指令类型为结束时，传递参数表明无需进行滚动处理。 A further improvement of the present invention is that in the step b), when the current instruction type is ended, the delivery parameter indicates that scroll processing is not required.
本发明的进一步改进在于，所述的步骤b）中，当前指令类型为暂停时，传递参数表明无需进行滚动处理。 A further improvement of the present invention is that in the step b), when the current instruction type is paused, the delivery parameter indicates that scroll processing is not required.
本发明的进一步改进在于，所述的步骤b）中，读取路径如非首段，则计算其衔接的切向夹角，如果夹角大于预设阈值，传递参数表明无需进行滚动处理。
According to a further improvement of the present invention, in the step b), if the read path is not the first segment, the tangential angle of the joint is calculated. If the angle is greater than the preset threshold, the transfer parameter indicates that the scrolling process is not required.
本发明的进一步改进在于，所述的步骤b）中，如果当前段数已达最大前瞻段数，传递参数表明需要进行滚动处理。A further improvement of the present invention is that in the step b), if the current number of segments has reached the maximum number of lookahead segments, the pass parameters indicate that scrolling processing is required.
根据本发明有益效果为：The beneficial effects according to the invention are:
1) 提高对连续微小路径段的规划效率，缩短加工时间；1) Improve the planning efficiency of continuous micro path segments and shorten the processing time;
2) 减少加工速度的波动，提高加工质量；2) Reduce fluctuations in processing speed and improve processing quality;
3)
使算法彻底摆脱对“最大前瞻段数”的依赖，防止因设定太小规划出的效率偏慢，设定过大又会导致对计算资源的过度占用。3)
The algorithm is completely rid of the dependence on the "maximum look-ahead segment" to prevent the efficiency from being too small due to the setting too small. If the setting is too large, it will lead to excessive occupation of computing resources.
具体实施方式detailed description
下面对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more readily understood by those skilled in the art.
本实施例公开一种数控设备CNC系统前瞻滚动处理方法，其关键步骤如下：This embodiment discloses a forward-looking scroll processing method for a numerical control equipment CNC system, and the key steps are as follows:
1） 设定或读取：最大偏转角阈值、最大前瞻段数；1) Set or read: maximum deflection angle threshold, maximum forward looking number;
2） 读取当前指令，如果为结束，则转步骤7)，并传递参数
bRollback=false，而后转步骤10)；2) Read the current instruction, if it is over, go to step 7) and pass the parameters
bRollback=false, then go to step 10);
3） 如果当前指令为暂停，则转步骤7)，并传递参数 bRollback=false；3) If the current instruction is paused, go to step 7) and pass the parameter bRollback=false;
4） 读取路径，如非首段，则计算其衔接的切向夹角，如果夹角大于预设阈值，则步骤7) ，并传递参数
bRollback=false；4) Read the path, if it is not the first segment, calculate the tangential angle of its connection. If the angle is greater than the preset threshold, then step 7) and pass the parameters.
bRollback=false;
5） 如果当前段数已达最大前瞻段数，则转步骤7) ，并传递参数 bRollback=true； 5) If the current number of segments has reached the maximum number of forwards, go to step 7) and pass the parameter bRollback=true;
6） 否则，转步骤 2)；6) Otherwise, go to step 2);
7）
令最后一段的终点处：速度=0，如果为（全局）S形速度曲线时，加速度、加加速也均设为0；而首段的起点处的速度、加速度、加加速均保持不变，然后对当前缓存中的路径进行速度规划；7)
Let the end of the last paragraph: speed = 0, if it is a (global) S-shaped speed curve, the acceleration and acceleration are also set to 0; and the velocity, acceleration, acceleration and acceleration at the beginning of the first segment remain unchanged. Then speed planning the path in the current cache;
8） 当bRollback==false时，将全部路径插补立即输出；当bRollback==true
时，仅插补输出部分路径，此步骤为本发明的关键点，具体如下：如果采用梯形速度曲线时，可从后至前反向搜索40%的段数，取终点速度最大者为界，之前的插补输出，之后的缓存下来有待下一次滚动规划；如果采用（全局）S形速度曲线时，类似地，从后至前反向搜索40%的S形总段数，取衔接点速度最大者为界，之前的插补输出，之后的缓存下来有待下一次滚动规划，因衔接点处的加速度及加加速一定均为0，以方便下次的（全局）S形滚动规划；8) When bRollback==false, all path interpolation is output immediately; when bRollback==true
When only the output part path is interpolated, this step is the key point of the invention. The specific details are as follows: If the trapezoidal speed curve is used, the 40% segment number can be searched backwards from back to front, and the maximum end point speed is bounded. Interpolation output, after the buffer is waiting for the next rolling plan; if the (global) S-shaped speed curve is used, similarly, the back-to-front reverse search for 40% of the total number of S-shaped segments, taking the maximum speed of the joint For the boundary, the previous interpolation output, after the buffer is ready for the next rolling plan, because the acceleration and acceleration at the joint point must be 0 to facilitate the next (global) S-shaped rolling plan;
9） 转步骤2)；9) Go to step 2);
10） 结束。10) End.
当提交前瞻规划时，传递一个参数，以区别是否将还会进行滚动式规划；当需要进行滚动式规划时，插补输出一部分前面的路径，而后面的一部分路径留待下一次插补；当采用梯形速度曲线时，以后面若干段路径中终点的速度最大者为界，进行插补输出或再滚动规划；当全局S形速度曲线时，以后面若干段
S
形衔接点的速度最大者为界，进行插补输出或再滚动规划，本发明采用了一套巧妙的方法，在保证不占用更多的计算机资源的前提下，提高对连续微小路径段的规划效率，缩短加工时间；减少加工速度的波动，提高加工质量；使算法彻底摆脱对“最大前瞻段数”的依赖，防止因设定太小规划出的效率偏慢，设定过大又会导致对计算资源的过度占用。
When submitting a forward-looking plan, pass a parameter to distinguish whether scrolling will still be planned; when scrolling planning is required, the interpolation outputs a part of the previous path, and the latter part of the path is reserved for the next interpolation; In the trapezoidal velocity curve, the interpolation output or re-rolling plan is performed with the maximum speed of the end points in the following several paths, and when the global S-shaped velocity curve is used, the following segments are used.
S
The maximum speed of the joint is the boundary, and the interpolation output or the re-rolling plan is performed. The invention adopts a clever method to improve the planning of the continuous micro path segment while ensuring that no more computer resources are occupied. Efficiency, shorten processing time; reduce processing speed fluctuations, improve processing quality; make the algorithm completely rid of the dependence on the "maximum forward-looking segment number", prevent the efficiency from being too small due to setting too small, too large setting will lead to Over-occupation of computing resources.
以上实施方式只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所做的等效变化或修饰均涵盖在本发明的保护范围内。The above embodiments are merely illustrative of the technical concept and the features of the present invention, and are intended to be understood by those skilled in the art and are not intended to limit the scope of the present invention. Equivalent changes or modifications made are intended to be included within the scope of the invention.
Claims (9)
1. 一种数控设备CNC系统前瞻滚动处理方法，其特征在于，包括如下步骤： 1. A forward-looking scroll processing method for a numerical control equipment CNC system, characterized in that it comprises the following steps:
a) 判断当前指令类型，将后续路径读入缓存并获得后续路径的特征值；a) determining the current instruction type, reading the subsequent path into the cache and obtaining the feature value of the subsequent path;
b) 根据对指令类型与后续路径的特征值的判断传递参数以区别是否还需进行滚动处理；b) passing parameters according to the judgment of the feature value of the instruction type and the subsequent path to distinguish whether scroll processing is still needed;
c)
设定最后一段路径的终点处速度为0，而首段路径的起点处速度、加速度、加加速均保持不变，对当前缓存中的路径进行速度规划；c)
Set the speed of the end of the last path to 0, and the speed, acceleration, and acceleration at the beginning of the first path remain unchanged, and speed planning the path in the current cache;
d)
当传递的参数表明无需进行滚动处理时，将全部路径插补立即输出；当传递的参数表明仍需进行滚动处理时，仅插补输出部分路径，并且从后至前反向搜索预定段数路径,
取衔接点速度最大处为界限，界限之前的插补输出，界限之后的缓存下来等待下一次处理。d)
When the passed parameters indicate that scrolling processing is not required, all path interpolation is immediately output; when the passed parameters indicate that scrolling processing is still required, only the partial path is outputted, and the predetermined number of paths are reversely searched from back to front.
Take the maximum speed of the joint point as the limit, the interpolation output before the limit, and the buffer after the limit waits for the next processing.
2.
根据权利要求1所述的数控设备CNC系统前瞻滚动处理方法，其特征在于：所述的步骤c）与步骤d）中，速度规划采用梯形速度曲线，在进行反向搜索时以后面若干段路径中的终点速度最大者为界，进行插补输出或再滚动规划。2.
The forward-looking scroll processing method for a numerical control device CNC system according to claim 1, wherein in the steps c) and d), the speed planning adopts a trapezoidal speed curve, and in the reverse search, the following several paths are used. The maximum end point speed is bounded, and the interpolation output or re-rolling plan is performed.
3.
根据权利要求1所述的数控设备CNC系统前瞻滚动处理方法，其特征在于：所述的步骤c）中，速度规划采用全局S形速度曲线，加速度、加加速也均设为0。
3.
The forward-looking scroll processing method of the numerical control device CNC system according to claim 1, wherein in the step c), the speed planning uses a global S-shaped speed curve, and the acceleration and acceleration are also set to zero.
4.
根据权利要求1或3所述的数控设备CNC系统前瞻滚动处理方法，其特征在于：所述的步骤d）中，在进行反向搜索时以后面若干段 S
形衔接点的速度最大者为界，进行插补输出或再滚动规划。4.
The forward-looking scroll processing method for a numerical control device CNC system according to claim 1 or 3, wherein in the step d), in the reverse search, the following segments are used.
The fastest speed of the joint is the boundary, and the interpolation output or re-rolling plan is performed.
5.
根据权利要求1所述的数控设备CNC系统前瞻滚动处理方法，其特征在于：所述的步骤d）中，在进行反向搜索时，从后至前反向搜索30%-50%段数的路径。5.
The forward-looking scroll processing method for a numerical control device CNC system according to claim 1, wherein in the step d), when performing a reverse search, the path of 30%-50% segments is reversely searched from back to front. .
6.
根据权利要求1所述的数控设备CNC系统前瞻滚动处理方法，其特征在于：所述的步骤b）中，当前指令类型为结束时，传递参数表明无需进行滚动处理。
6.
The forward-looking scroll processing method of the CNC system of the numerical control device according to claim 1, wherein in the step b), when the current instruction type is ended, the parameter is transmitted to indicate that scroll processing is not required.
7.
根据权利要求1所述的数控设备CNC系统前瞻滚动理方法，其特征在于：所述的步骤b）中，当前指令类型为暂停时，传递参数表明无需进行滚动处理。
7.
The forward-looking scrolling method of the numerical control device CNC system according to claim 1, wherein in the step b), when the current instruction type is paused, the parameter is transmitted indicating that scroll processing is not required.
8.
根据权利要求1所述的数控设备CNC系统前瞻滚动处理方法，其特征在于：所述的步骤b）中，读取路径如非首段，则计算其衔接的切向夹角，如果夹角大于预设阈值，传递参数表明无需进行滚动处理。
8.
The forward-looking scroll processing method of the numerical control device CNC system according to claim 1, wherein in the step b), if the read path is not the first segment, the tangential angle of the connection is calculated, if the angle is larger than The preset threshold, passing parameters indicates that no scrolling is required.
9.
根据权利要求1所述的数控设备CNC系统前瞻滚动处理方法，其特征在于：所述的步骤b）中，如果当前段数已达最大前瞻段数，传递参数表明需要进行滚动处理。
9.
The forward-looking scroll processing method of the numerical control device CNC system according to claim 1, wherein in the step b), if the current number of segments has reached the maximum number of forward-looking segments, the transfer parameter indicates that scroll processing is required.
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