TWI739468B - Chip breaking control system and the control method thereof - Google Patents

Abstract

A chip breaking control system is provided, which includes a control module and a driver. The control module includes a command receiving unit, a chip breaking unit, and a path planning unit. The command receiving unit receives a processing command, a processing condition, and a machine performance, and the command receiving unit calculates movement command according to the processing command and the processing condition. The chip breaking unit receives the processing condition and the machine performance to calculate a swing amplitude and a swing frequency according to the processing condition and the machine performance. The path planning unit receives the movement command, the swing amplitude and the swing frequency to calculate the swing movement command. The driver receives the swing movement command from the path planning unit of the control module to control the swing unit to carry out the chip breaking process for the workpiece.

Description

Chip breaking control system and control method thereof

The present invention relates to the technical field of numerical control, in particular to a chip breaking control system and a control method thereof.

In the cutting process of the machine tool, the chips will be entangled on the tool or workpiece, causing scratches on the workpiece or damage to the tool. Therefore, the user will turn on the chip breaking processing function of the machine tool according to the actual processing situation, so as to avoid the generation of excessively long chips that affect the processing quality.

The existing chip-breaking cutting technology usually encounters the following problems: (1) The user needs to set at least one set of parameters most suitable for the processing conditions according to the actual processing parameters to perform the chip-breaking cutting function. (2) Because the rigidity of each machine is different, even if the same processing conditions are set, the effect of chip breaking may not be the same. Therefore, the existing numerical control device cannot respond to the processing conditions and machine rigidity set by the user. Automatic oscillation amplitude oscillation frequency and precise control of chip breaking quality.

In order to improve the above-mentioned problems, the main purpose of the present invention is to provide a chip breaking control system and its control method. The chip breaking function of path planning is added to the numerical control device, so that the numerical control device can automatically according to the current processing conditions and machine performance. Calculate the swing amplitude and swing frequency. The user of the machine only needs to turn on this function in the processing section where this function is used. It is necessary to set any parameters, and there is no need to adjust the chip breaking parameters according to each processing condition or different machines, which greatly improves the user's operating friendliness and accurately controls the quality of chip breaking.

Another object of the present invention is to provide a chip breaking control system and its control method. In the case of considering the machine performance, the chip breaking parameters can be adjusted according to the machine performance of different machines, so there is no need for the same processing Parameters, but different machines will cause unstable chip breaking or strong vibration of the machine during chip breaking processing, which will affect processing accuracy or processing quality. In the case of considering the processing conditions, the parameters of chip breaking can be calculated according to the different spindle speed, feed rate, and bar diameter parameters, so as to improve the chip breaking caused by the change of processing conditions, and the chip breaking is wound. The problem on the tool can further improve the problem of machine vibration and excessive swing, which cause the surface finish of the processed object to decrease.

According to the above objective, the present invention discloses a chip breaking control system, including: a control module, a driver, and a swing unit, wherein the driver is respectively connected to the control module and the swing unit. The control module includes: a command receiving unit, a chip breaking unit, and a path planning unit. The command receiving unit is used to receive at least one processing command, at least one processing condition, and at least one machine performance, and the command receiving unit calculates according to the processing command and processing condition Movement command; the chip breaking unit is used to receive the processing conditions and machine performance transmitted by the command receiving unit, and the chip breaking unit calculates the swing amplitude and frequency according to the processing conditions and machine performance; and the path planning unit is used to receive the command The movement command calculated by the receiving unit and the swing amplitude and the swing frequency calculated by the chip breaking unit are received, and the path planning unit calculates the swing movement command according to the movement command, the swing amplitude and the swing frequency. The driver is used for receiving the swing movement command transmitted by the path planning unit of the control module. The driver controls the swing unit to perform chip breaking processing on the workpiece according to the swing movement command.

In a preferred embodiment of the present invention, the chip breaking unit sets the swing frequency reference interval according to the machine performance, and the chip breaking unit compares the swing frequency reference interval with the swing frequency. The frequency is not included in the swing frequency reference interval, and the chip breaking unit recalculates according to the processing conditions and machine performance to obtain another swing frequency.

In a preferred embodiment of the present invention, the chip breaking unit sets the swing amplitude reference interval according to the machine performance, and the chip breaking unit compares the swing amplitude with the swing amplitude reference interval. When the swing amplitude is not included in the swing amplitude reference interval, The chip breaking unit recalculates according to the processing conditions and machine performance to obtain another swing amplitude.

In a preferred embodiment of the present invention, the control module further includes a memory unit for receiving and storing the processing conditions and machine performance input by the user.

In a preferred embodiment of the present invention, the memory unit further includes storing at least one resonance frequency interval. When the oscillation frequency includes the resonance frequency interval, the chip breaking unit recalculates the oscillation frequency according to the processing conditions and machine performance to obtain Another swing frequency.

In a preferred embodiment of the present invention, the swing unit in the chip breaking control system is connected to at least one swing axis, the swing unit includes a spindle or a feed axis, and the processing conditions include the rotation speed of the spindle and the feed speed of the feed axis. At least one feature of the workpiece with the workpiece, where the feature of the workpiece includes the shape, size, and/or material characteristics of the workpiece, and the machine performance includes the speed loop gain, the speed loop integral time constant, and/or the position loop gain.

In a preferred embodiment of the present invention, the chip breaking unit calculates the swing amplitude according to the speed, feed speed, speed loop gain, and speed loop integral time constant, and the chip breaking unit calculates the swing amplitude according to the speed, feed speed, workpiece characteristics, and speed loop gain. Calculate the swing frequency with the integral time constant of the speed loop.

In a preferred embodiment of the present invention, the chip breaking unit further calculates the first swing amplitude according to the speed, feed speed, speed loop gain, speed loop integral time constant, and position loop gain, and the chip breaking unit further calculates the first swing amplitude according to the speed and feed speed. Speed, workpiece characteristics, speed loop gain, speed loop integral time constant and position loop gain are calculated to obtain the first swing frequency.

In a preferred embodiment of the present invention, the workpiece will have a first chip breaking amount at the first time in the chip breaking processing process, and a second chip breaking amount will be generated at the second time, and the first chip breaking amount and the second chip breaking amount The amount of chip breaking is included in the tolerance interval.

In a preferred embodiment of the present invention, the third time of the workpiece in the chip breaking process is performed according to the third oscillation amplitude and the third oscillation frequency, and the fourth time of the workpiece in the chip breaking process is according to The fourth oscillating amplitude and the fourth oscillating frequency are subjected to a chip-breaking processing process, and the third oscillating amplitude is greater than the fourth oscillating amplitude, and the third oscillating frequency is lower than the fourth oscillating frequency. The third processing that the oscillating unit moves at the third time The distance is smaller than the fourth machining distance moved at the fourth time.

In a preferred embodiment of the present invention, in the chip breaking control system, the path planning unit further includes: receiving the feedback value of the swing unit for chip breaking processing of the workpiece; comparing the feedback value with the swing movement command to generate feedback Movement command; calculate the swing feedback movement command according to the feedback movement command, the second movement command, the second swing amplitude and the second swing frequency; and control the swing unit according to the swing feedback movement command to compensate the workpiece for chip breaking processing, The occurrence time of the movement command is earlier than the occurrence time of the second movement command.

In addition, the present invention further discloses a chip-breaking control method, the steps of which include: starting a chip-breaking processing process in a processing interval; receiving processing commands, at least one processing condition, and at least one machine performance; calculating a movement command according to the processing commands and processing conditions; Calculate the swing amplitude and swing frequency according to the processing conditions and machine performance; calculate the swing movement command according to the movement command, swing amplitude and swing frequency; and drive the swing unit according to the swing movement command to perform chip breaking processing on the workpiece.

In a preferred embodiment of the present invention, the chip breaking control method further includes setting a swing frequency reference interval according to the performance of the machine, and comparing the swing frequency with the swing frequency reference interval. The dynamic frequency is not included in the reference range of the swing frequency. Recalculate another swing frequency according to the processing conditions and machine performance.

In a preferred embodiment of the present invention, the chip breaking control method further includes setting the swing amplitude reference interval according to the machine performance, and comparing the swing amplitude with the swing amplitude reference interval. When the swing amplitude is not included in the swing amplitude reference interval, Recalculate according to the processing conditions and machine performance to obtain another swing amplitude.

In a preferred embodiment of the present invention, the processing conditions and machine performance can be input by the user or stored in the memory unit.

In a preferred embodiment of the present invention, the chip breaking control method further includes storing at least one resonance frequency interval in the memory unit. When the oscillation frequency is included in the resonance frequency interval, the oscillation frequency is recalculated according to the processing conditions and the performance of the machine. Get another swing frequency.

In a preferred embodiment of the present invention, the swing unit includes a main shaft or a feed shaft, and the processing conditions include the rotation speed of the main shaft, the feed speed of the feed shaft, and the workpiece features of the workpiece. The workpiece features include the shape, size, and / Or at least one material characteristic, the swing unit is connected with the swing axis and the machine performance includes speed loop gain, speed loop integral time constant and/or position loop gain.

In the preferred embodiment of the present invention, the swing amplitude in the chip breaking control method is calculated based on the speed, feed speed, speed loop gain and speed loop integral time constant, and the swing frequency is based on the speed, feed speed, and workpiece characteristics. , Speed loop gain and speed loop integral time constant are calculated.

In a preferred embodiment of the present invention, the chip breaking control method further includes calculating the first swing amplitude according to the rotation speed, the feed speed, the speed loop gain, the speed loop integral time constant and the position loop gain, and according to the rotation speed and the feed speed. , Workpiece characteristics, speed loop gain, speed loop integral time constant and position loop gain are calculated to get the first swing frequency.

In a preferred embodiment of the present invention, the workpiece will have a first chip breaking amount at the first time in the chip breaking processing process, and a second chip breaking amount will be generated at the second time, and the first chip breaking amount and the second chip breaking amount Both chip breaking amounts are included in the tolerance interval.

In a preferred embodiment of the present invention, the third time of the workpiece in the chip breaking process is performed according to the third oscillation amplitude and the third oscillation frequency, and the fourth time of the workpiece in the chip breaking process is according to The fourth oscillating amplitude and the fourth oscillating frequency are subjected to a chip-breaking processing process, and the third oscillating amplitude is greater than the fourth oscillating amplitude, and the third oscillating frequency is lower than the fourth oscillating frequency. The third processing that the oscillating unit moves at the third time The distance is smaller than the fourth machining distance moved at the fourth time.

In a preferred embodiment of the present invention, the chip breaking control method further includes the following steps: receiving the feedback value of the chip breaking processing process performed by the swing unit on the workpiece; comparing the feedback value with the swing movement command to generate the feedback movement command; The feedback movement command, the second movement command, the second oscillation amplitude and the second oscillation frequency are used to calculate the oscillation feedback movement command; and the oscillation unit is controlled according to the oscillation feedback movement command to compensate the workpiece for chip-breaking processing. The occurrence time point is earlier than the occurrence time point of the second movement command.

Steps S10-S20: Step-by-step flow chart of chip breaking control method

1: Chip breaking control system

2: Host computer

3: Control module

30: Command receiving unit

32: Chip breaking unit

34: Path Planning Unit

36: memory unit

4: drive

5: Swing unit

FIG. 1 is a schematic diagram showing the steps of the chip breaking control method according to the technology disclosed in the present invention.

FIG. 2 is a block diagram of the chip breaking control system according to the technology disclosed in the present invention.

Please refer to Figure 1 first. While describing FIG. 1, it is also explained in conjunction with FIG. 2. Among them, FIG. 1 is a flow chart showing the steps of the chip breaking control method according to the technology disclosed in the present invention, and FIG. 2 is Represents the schematic diagram of the chip breaking control system. The chip breaking control method includes the following steps: Step S10: Start the chip breaking processing process in the processing interval. In this step, the user turns on the chip breaking processing function on the host computer 2 according to the actual processing requirements. Step S12: receiving a processing command, at least one processing condition, and at least one machine performance. In this step, the command receiving unit 30 in the control module 3 receives the processing command, at least one processing condition, and at least one machine performance from the host computer 2, and the definition of the processing command, processing conditions, and machine performance will be This is described in detail below. It is worth noting that the machine performance can be obtained by the host computer 2 or can be built in the memory unit 36 of the control module 3.

Next, step S14: Calculate the movement command according to the machining command and the machining condition. In this step, the command receiving unit 30 calculates the movement command based on the processing command and the processing conditions sent from the host. Before the processing machine executes the processing process on the workpiece (not shown in the figure), it needs to know the processing state of the workpiece through the processing command of the host computer 2, for example, the size of the cutting aperture or the depth. Step S16: Calculate the swing amplitude and swing frequency according to at least one processing condition and at least one machine performance. In this step, the chip breaking unit 32 calculates the swing amplitude and the swing frequency according to the processing conditions and machine performance from the host computer 2. In the present invention, the machine performance can be regarded as the rigidity of the processing machine, which mainly includes information such as speed loop gain, speed loop integral time constant, and/or position loop gain. Step S18: Calculate the swing movement command according to the movement command, the swing amplitude and the swing frequency. In this step, the command receiving unit 30 is used to transmit the movement command to the path planning unit 34. The swing amplitude and frequency are transmitted from the chip breaking unit 32 to the path planning unit 34. The path planning unit 34 then transmits the movement command, the swing amplitude, and the path planning unit 34. The swing frequency is used to calculate the swing movement command.

Finally, in step S20: drive the swing unit according to the swing movement command to perform chip breaking processing on the workpiece. In this step, the control module 3 can drive the driver 4 according to the swing movement command calculated by the path planning unit 34 in step S18 to control the swing unit 5 to perform chip breaking processing on the workpiece (not shown in the figure) . The functions of the above-mentioned host computer 2, driver 3, command receiving unit 30, chip breaking unit 32, and path planning unit 34 will be described in detail later.

Then please refer to Figure 2. Fig. 2 is a schematic diagram showing a chip breaking control system. The chip breaking control system 1 at least includes: a host computer 2, a control module 3, a driver 4, and a swing unit 5. The control module 3 is connected to the host computer 2 and the driver 4, and the driver 4 is connected to the swing unit 5, and the driver 4 to drive the swing unit 5. In the embodiment of the present invention, the upper computer 2 may be a processing machine (not shown in the figure) controller, a desktop computer, a notebook computer, a smart phone or a remote server, etc., and the upper computer 2 It is connected with the control module 3 through wired or wireless means.

The control module 3 includes at least a command receiving unit 30, a chip breaking unit 32, a path planning unit 34, and a memory unit 36. The command receiving unit 30 receives processing commands, processing conditions, and machine performance from the host computer 2. The receiving unit 30 calculates the movement command according to the processing command and the processing condition, where the processing condition includes the rotation speed of the main shaft and the feed speed of the feed axis, and transmits the calculated movement command to the path planning unit 34. In addition, the command receiving unit 30 transmits the rotation speed of the spindle, the feed speed of the feed shaft, at least one feature of the workpiece and the machine performance in the processing conditions to the chip breaking unit 32. In the present invention, the processing command refers to the processing state of the workpiece, that is, what form the user wants to process the workpiece. The workpiece characteristics of the workpiece include the shape, size and/or material characteristics of the workpiece; the machine performance includes the speed loop gain, the speed loop integral time constant and/or the position loop gain.

The chip breaking unit 32 receives the spindle speed, the feed speed of the feed axis, at least one feature of the workpiece and the performance of the machine in the processing conditions transmitted by the command receiving unit 30 to calculate the swing amplitude and swing of the swing unit 5 frequency. Among them, the swing amplitude is calculated by the chip breaking unit 32 according to the rotation speed of the main shaft, the feed speed of the feed axis, the speed loop gain in the machine performance, and the speed loop integral constant. In addition, the oscillation frequency is calculated by the chip breaking unit 32 based on the speed loop gain and the speed loop integral time constant in the spindle speed, feed speed of the feed axis, workpiece characteristics and machine performance. It is worth noting that the features of the workpiece in the processing conditions are the features of the workpiece at each stage of the chip breaking processing process.

In another embodiment of the present invention, the chip breaking unit 32 can calculate the first swing according to the rotation speed of the main shaft, the feed speed of the feed shaft, the speed loop gain, the speed loop gain, the speed loop integral time constant, and the position loop gain. Amplitude; In addition, the chip breaking unit 32 calculates to obtain the first oscillation frequency according to the spindle speed, feed speed of the feed axis, workpiece characteristics, speed loop gain, speed loop integral time constant and position loop gain. It is worth noting that, in the embodiment of the present invention, the chip breaking unit 32 also takes the position loop gain in the machine performance into consideration to calculate the first oscillation amplitude and the first oscillation frequency. The stability and accuracy of the chip processing process.

Then, the chip breaking unit 32 transmits the oscillation amplitude and oscillation frequency obtained by the above calculation to the path planning unit 34, and the path planning unit 34 is based on the movement command transmitted by the command transmission unit 30 and the oscillation amplitude and the oscillation amplitude transmitted by the chip breaking unit. The swing frequency is used to calculate the swing movement command. In another embodiment, the chip breaking unit 32 transmits the first oscillation amplitude and the first oscillation frequency to the path planning unit 34. Similarly, the path planning unit 34 is based on the movement command transmitted by the command transmission unit 30 and the chip breaking The first swing amplitude and the first swing frequency transmitted by the unit are calculated to obtain the first swing movement command, so that the driver 4 receives the swing movement command (or the first swing movement command) transmitted by the path planning unit 34 in the control module 3. ), and according to the swing movement command (or the first swing movement command), the swing unit 5 is controlled to perform a chip breaking process on the workpiece (not shown in the figure).

In the embodiment of the present invention, the chip breaking unit 32 mainly sets the swing frequency reference interval according to the machine performance. In another embodiment, the user may also set the swing frequency reference interval. Next, the chip breaking unit 32 compares the swing frequency reference interval with the previously calculated swing frequency. When the swing frequency is not included in the swing frequency reference interval, the chip breaking unit 32 will recalculate another one included in the swing frequency reference interval.的wigging frequency. For example, when the swing frequency calculated by the chip breaking unit 32 ( _{called swing frequency f 1} ) is less than the minimum value of the swing frequency reference interval ( _{called swing frequency f A} ) or greater than the maximum value of the swing frequency reference interval ( When the oscillating frequency f _{B is} called), that is, the oscillating frequency f _{1 does} not fall into the oscillating frequency reference interval, the chip breaking unit 32 will not directly _{output the calculated oscillating frequency f 1} to the path planning unit 34, but according to the oscillating frequency f 1 The frequency f _A and the swing frequency f _{B calculate another swing frequency (referred to as the swing frequency f 2} ) included in the swing frequency reference interval, and the subsequent chip breaking unit 32 _{outputs the swing frequency f 2} to the path planning unit 34.

On the other hand, the chip breaking unit 32 mainly sets the swing amplitude reference interval according to the machine performance. In another embodiment, it can also be set by the user. The chip breaking unit 32 compares the previously calculated swing amplitude with the swing amplitude reference interval. When the swing amplitude is not included in the swing amplitude reference interval (that is, the swing amplitude does not fall within the swing amplitude reference interval), the chip breaking unit 32 will Recalculate another swing amplitude included in the swing amplitude reference interval. For example, when the swing amplitude calculated by the chip breaking unit 32 ( _{called swing amplitude h 1} ) is less than the minimum value of the swing amplitude reference interval ( _{called swing amplitude h A} ) or greater than the maximum value of the swing amplitude reference interval ( When the swing amplitude h _{B is} called), that is, the swing amplitude h _{1 does} not fall within the swing amplitude reference interval, the chip breaking unit 32 does not directly _{output the calculated swing amplitude h 1} to the path planning unit 34, but according to The swing amplitude h _A and the swing amplitude h _B calculate another swing amplitude included in the swing amplitude reference interval ( _{referred to as the swing amplitude h 2} ), and the subsequent chip breaking unit 32 will _{output the swing amplitude h 2} to the path planning unit 34 .

The path planning unit 34 calculates the swing movement command based on the movement command from the command receiving unit 30 and the swing frequency and swing amplitude from the chip breaking unit 32. The driver 3 controls the swing unit 5 to perform the chip breaking processing process according to the swing movement command calculated by the path planning unit 34.

The swing unit 5 includes a spindle (not shown in the figure) or a feed axis (not shown in the figure). When the swing unit is a feed axis (corresponding to a tool or a workpiece according to the actual processing flow), the feed axis can be Any one of the x, y, or z axis swings. Among them, the feed axis can swing in any of the x, y, or z axes in accordance with the actual machining process to break chips during machining. For example, when the machining process is linear chip breaking, the feed axis can swing on any of the x, y, or z axes for chip breaking. Yu another In an embodiment, similarly, when the machining process is a slanted line or an arc, the feed axis can swing in any of the x, y, or z axes to perform the chip breaking process.

In another embodiment, when the swing unit 5 is a spindle (corresponding to a tool or a workpiece according to the actual machining process), the spindle can swing in any of the a, b, or c axes, and the spindle can be in accordance with the actual machining process. Any one of a, b or c axis swings for chip breaking. In one embodiment, when the machining process is linear chip breaking, the spindle can swing in any of the a, b, or c axes for chip breaking; in another embodiment, when the machining process is diagonal or arc , The spindle can also swing in any of the a, b or c axes for chip breaking processing.

In the embodiment of the present invention, the control module 3 further includes a memory unit 36 for storing the processing conditions and machine performance input by the user or the host computer 2, and the chip breaking unit 32 according to the machine performance The set swing frequency reference interval, swing amplitude reference interval and tolerance interval. In addition, the memory unit 36 also stores a resonance frequency range. When the swing frequency ( _{called swing frequency f 3} ) calculated by the chip breaking unit 32 is included in the preset resonance frequency range (that is, the swing frequency f ₃ falls into the resonance frequency range). Frequency range), it means that the vibration frequency generated by the swing unit 5 during the chip-breaking process will resonate with the machine (not shown in the figure), which will cause the chip-breaking process to not proceed smoothly and easily make the machine The table (not shown in the figure) and related parts are damaged due to resonance. At this time, the chip breaking unit 32 does not directly _{output the calculated swing frequency f 3} to the path planning unit 34, but avoids all frequencies in the resonance frequency range to recalculate the swing frequency f ₄ , and the subsequent chip breaking unit 32 will The wobble frequency f _{4 is} output to the path planning unit 34.

In an embodiment of the present invention, the amount of chip breakage is generated during the chip breaking process of the workpiece. When the driver 4 drives the swing unit 5 to perform chip breaking processing on the workpiece according to the swing movement command, if the amount of chip breaking generated is included in the tolerance interval, it means that the swing frequency and swing amplitude calculated by the chip breaking unit 32 can be stabilized Chip breaking. If the amount of chip breaking is not included in the tolerance range, the user can determine whether the chip breaking unit 32 needs to recalculate the swing according to the actual machining situation Frequency and oscillation amplitude, so that the amount of chip-breaking produced by the chip-breaking process in different unit times should be included in the tolerance interval. In the embodiment of the present invention, the amount of chip breaking may be weight or volume. For example, the workpiece will produce the first chip breaking amount at the first time in the chip breaking processing process, and the second chip breaking amount will be produced at the second time. When the weight of the first chip breaking amount and the second chip breaking amount is equal to or When the volume is included in the tolerance range, it means that the chip breaking effect of the current machine (not shown in the figure) is stable.

In one embodiment, as the processing time of the workpiece is different, the swing frequency and swing amplitude are also adjusted accordingly. Taking the workpiece as a bar mounted on the spindle and the swing unit as a tool mounted on the feed axis as an example, in the chip breaking process, the tool will be processed from the outer diameter surface of the bar to the center of the bar. When the tool is at the third time (for example, the bar diameter is 50mm), it will perform chip breaking processing on the bar according to the third oscillation amplitude and the third oscillation frequency; when the tool is at the fourth time (for example, the bar diameter is 40mm), it will be processed according to The fourth oscillating amplitude and the fourth oscillating frequency perform a chip breaking processing process on the bar. The third swing amplitude is greater than the fourth swing amplitude, the third swing frequency is less than the fourth swing frequency, and the third machining distance moved by the tool at the third time is smaller than the fourth machining distance moved at the fourth time.

In addition, the present invention compensates for the chip breaking processing process performed on the workpiece by the swing unit 5. The path planning unit 34 is mainly used to receive the feedback value when the swing unit 5 performs chip breaking processing on the workpiece (not shown in the figure), where the feedback value is determined by the motor encoder (not shown in the figure) produce. Then, the path planning unit 34 compares this feedback value with the previously calculated swing movement command calculated by the chip breaking unit 32 based on the swing amplitude and swing frequency to obtain the feedback movement command; next, the path planning unit 34 uses this Feedback movement command, movement command (second movement command), swing amplitude (second swing amplitude) and swing frequency (second swing frequency) calculated based on processing command, processing conditions and machine performance in the next unit time To calculate the swing feedback movement command, it should be noted that when the movement command obtained in the next unit time is generated The time point is later than the processing command, processing condition and machine performance input by the user through the host computer 2 in the command receiving unit 30 of the control module 3, and the movement command calculated by the command receiving unit 30 according to the processing command Point in time. Finally, the control module 3 controls the swing unit 5 according to the swing feedback movement command to compensate the workpiece (not shown in the figure) for chip-breaking processing.

1: Chip breaking control system

2: Host computer

3: Control module

30: Command receiving unit

32: Chip breaking unit

34: Path Planning Unit

36: memory unit

4: drive

5: Swing unit

Claims (22)

A chip breaking control system includes: a control module, including: a command receiving unit that receives at least one processing command, at least one processing condition, at least one workpiece feature of a workpiece, and at least one machine performance, the command receiving unit according to The processing command and the processing condition calculate a movement command, wherein the feature of the workpiece includes a shape, a size, and/or at least one material characteristic of the workpiece; a chip breaking unit receives the processing condition transmitted by the command receiving unit And the machine performance, and the chip breaking unit calculates a swing amplitude and a swing frequency according to the processing conditions and the machine performance; and a path planning unit that receives the movement command calculated by the command receiving unit, and receives The oscillation amplitude and the oscillation frequency calculated by the chip breaking unit, and the path planning unit calculates a oscillation movement command according to the movement command, the oscillation amplitude and the oscillation frequency; a driver connected to the control module for receiving The swing movement command transmitted by the path planning unit of the control module; and a swing unit connected to the driver and the driver controls the swing unit to perform chip breaking processing on the workpiece according to the swing movement command. The chip breaking control system according to claim 1, wherein the chip breaking unit sets a swing frequency reference interval according to the performance of the machine, and the chip breaking unit compares the swing frequency reference interval with the swing frequency, and when the swing The frequency is not included in the swing frequency reference interval, and the chip breaking unit recalculates according to the processing conditions and the performance of the machine to obtain another swing frequency. The chip breaking control system according to claim 1, wherein the chip breaking unit sets a swing amplitude reference interval according to the performance of the machine, and the chip breaking unit compares the swing amplitude with the swing amplitude reference interval, and when the swing The amplitude is not included in the swing amplitude reference interval, and the chip breaking unit recalculates according to the processing conditions and the performance of the machine to obtain another swing amplitude. The chip breaking control system according to claim 1, wherein the control module further includes a memory unit for receiving and storing the processing conditions and the machine performance input by a user. The chip breaking control system according to claim 4, wherein the memory unit further includes storing at least one resonance frequency interval, and when the oscillation frequency is included in the resonance frequency interval, the chip breaking unit is based on the processing conditions and the performance of the machine The wobble frequency is recalculated to obtain another wobble frequency. The chip breaking control system according to claim 1, further comprising at least one swing shaft connected to the swing unit, the swing unit includes a main shaft or a feed shaft, and the processing conditions include a rotation speed of the main shaft and the feed A feed speed of an axis. The machine performance includes a speed loop gain, a speed loop integral time constant and/or a position loop gain. The chip breaking control system according to claim 6, wherein the chip breaking unit calculates the swing amplitude according to the rotation speed, the feed speed, the speed loop gain, and the speed loop integral time constant, and the chip breaking unit calculates the swing amplitude according to the The oscillating frequency is calculated by rotating speed, the feed speed, the characteristics of the workpiece, the speed loop gain and the speed loop integral time constant. The chip breaking control system according to claim 6, wherein the chip breaking unit further calculates a first swing amplitude according to the rotation speed, the feed speed, the speed loop gain, the speed loop integral time constant, and the position loop gain, And the chip breaking unit further calculates a first swing frequency according to the rotation speed, the feed speed, the feature of the workpiece, the speed loop gain, the speed loop integral time constant, and the position loop gain. The chip breaking control system according to claim 1, wherein the workpiece generates a first chip breaking amount at a first time in the chip breaking processing process, and a second chip breaking amount at a second time, Both the first chip breaking amount and the second chip breaking amount are included in a tolerance interval. The chip breaking control system according to claim 1, wherein the chip breaking process is performed according to a third oscillation amplitude and a third oscillation frequency during a third time in the chip breaking process, and the workpiece is in A fourth time in the chip breaking process is performed according to a fourth swing amplitude and a fourth swing frequency, and the third swing amplitude is greater than the fourth swing amplitude, and the third swing frequency is less than the A fourth swing frequency, wherein a third processing distance moved by the swing unit at the third time is smaller than a fourth processing distance moved at the fourth time. The chip breaking control system according to claim 1, wherein the path planning unit further includes: receiving a feedback value of the oscillating unit performing the chip breaking processing process on the workpiece; comparing the feedback value with the oscillating movement command to Generate a feedback movement command; calculate a swing feedback movement command according to the feedback movement command, a second movement command, a second swing amplitude, and a second swing frequency; and control the swing according to the swing feedback movement command The unit performs the chip-breaking processing process compensation on the workpiece, wherein the occurrence time of the movement command is earlier than the occurrence time of the second movement command. A chip-breaking control method, including the steps of: starting a chip-breaking processing process in a processing interval; receiving a processing command, at least one processing condition, a workpiece feature of a workpiece, and at least one machine performance, wherein the workpiece feature includes the A shape, a size and/or at least one material characteristic of the workpiece; Calculate a movement command based on the processing command and the processing condition; calculate a swing amplitude and a swing frequency based on the processing condition and the machine performance; calculate a swing movement command based on the movement command, the swing amplitude and the swing frequency; and A swing unit is driven according to the swing movement command to perform the chip breaking processing process on the workpiece. The chip breaking control method according to claim 12, further comprising setting a swing frequency reference interval according to the performance of the machine, and comparing the swing frequency with the swing frequency reference interval, when the swing frequency is not included in the swing frequency In the reference interval, recalculate another swing frequency according to the processing conditions and the performance of the machine. The chip breaking control method according to claim 12, further comprising setting a swing amplitude reference interval according to the performance of the machine, and comparing the swing amplitude with the swing amplitude reference interval, when the swing amplitude is not included in the swing amplitude In the reference interval, recalculate according to the processing conditions and the performance of the machine to obtain another swing amplitude. The chip breaking control method according to claim 12, wherein the processing conditions and the machine performance can be input by the user or stored in a memory unit. The chip breaking control method according to claim 15, further comprising storing at least one resonance frequency interval in the memory unit, and when the oscillation frequency is included in the resonance frequency interval, recalculate according to the processing conditions and the performance of the machine This wobble frequency can be used to obtain another wobble frequency. The chip breaking control method according to claim 12, wherein the swing unit includes a spindle or a feed axis, and the processing conditions include a rotation speed of the spindle and a feed speed of the feed axis, and the swing unit and A swing axis connection and the machine performance include a speed loop gain, a speed loop integral time constant and/or a position loop gain. The chip breaking control method according to claim 17, wherein the swing amplitude is calculated based on the rotation speed, the feed speed, the speed loop gain, and the speed loop integral time constant, and the swing frequency is calculated based on the rotation speed, the feed speed, and the speed loop integral time constant. Calculate the given speed, the feature of the workpiece, the gain of the speed loop and the integral time constant of the speed loop. The chip breaking control method according to claim 17, further comprising calculating a first swing amplitude according to the rotation speed, the feed speed, the speed loop gain, the speed loop integral time constant and the position loop gain, and according to the The rotation speed, the feed speed, the feature of the workpiece, the speed loop gain, the speed loop integral time constant, and the position loop gain are calculated to obtain a first swing frequency. The chip breaking control method according to claim 12, wherein the workpiece generates a first chip breaking amount at a first time in the chip breaking processing process, and a second chip breaking amount at a second time , And the first chip breaking amount and the second chip breaking amount are both included in a tolerance interval. The chip breaking control method according to claim 12, wherein the chip breaking process is performed according to a third oscillation amplitude and a third oscillation frequency during a third time in the chip breaking process, and the workpiece is in A fourth time in the chip breaking process is performed according to a fourth swing amplitude and a fourth swing frequency, and the third swing amplitude is greater than the fourth swing amplitude, and the third swing frequency is less than the A fourth swing frequency, wherein a third processing distance moved by the swing unit at the third time is smaller than a fourth processing distance moved at the fourth time. The chip breaking control method according to claim 12, further comprising: receiving a feedback value of the chip breaking processing process performed by the swing unit on the workpiece; comparing the feedback value with the swing movement command to generate a feedback movement Command; calculate a swing feedback movement command based on the feedback movement command, a second movement command, a second swing amplitude, and a second swing frequency; and The swing unit is controlled according to the swing feedback movement command to perform the chip-breaking processing compensation on the workpiece, wherein the occurrence time of the movement command is earlier than the occurrence time of the second movement command.

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