CN114152238B - Method, apparatus, device and readable storage medium for compensating thermal deformation of machining center - Google Patents
Method, apparatus, device and readable storage medium for compensating thermal deformation of machining center Download PDFInfo
- Publication number
- CN114152238B CN114152238B CN202111310503.5A CN202111310503A CN114152238B CN 114152238 B CN114152238 B CN 114152238B CN 202111310503 A CN202111310503 A CN 202111310503A CN 114152238 B CN114152238 B CN 114152238B
- Authority
- CN
- China
- Prior art keywords
- processing equipment
- measurement frequency
- thermal deformation
- downtime
- machining center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000003860 storage Methods 0.000 title claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 145
- 238000003754 machining Methods 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/22—Matching criteria, e.g. proximity measures
Abstract
The invention provides a thermal deformation compensation method, a thermal deformation compensation device, thermal deformation compensation equipment and a readable storage medium for a machining center. The method comprises the following steps: detecting whether a target common variable of a numerical control system of processing equipment is empty or not; if the target common variable of the numerical control system of the processing equipment is empty, setting the measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency; if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime; if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency; and if the downtime of the processing equipment is not more than the preset downtime, adjusting the measurement frequency to be a third measurement frequency, and measuring the reference block of the processing equipment according to the third measurement frequency. The invention can faithfully reflect the thermal deformation condition of the processing equipment in an unstable state.
Description
Technical Field
The present invention relates to the field of parts processing, and in particular, to a method, an apparatus, a device, and a readable storage medium for compensating thermal deformation of a machining center.
Background
In the processing operation of complex parts in the automobile industry, the on-line measuring technology of a processing center is required, and as the processed object is often an important part, the processing precision is required to be high. The temperature of the machining center changes during operation, which results in a change in the position of the holder on which the workpiece is mounted, and the tool feed amount of the machining element needs to be adjusted because the tool feed amount in the machining element needs to be adjusted according to the position of the holder on which the workpiece is mounted. The prior art for adjusting the feeding amount of the cutter mainly adopts a fixed frequency method to compensate the thermal deformation of a processing center. The method specifically comprises the steps of firstly setting fixed frequency to calibrate and measure a reference block on a clamp, then judging the position change of the reference block, transmitting the information to a processing center, and adjusting the feeding quantity of a cutter by the processing center. The method cannot well solve the problem of cutter feeding amount adjustment caused by clamp position change when the temperature of a processing device does not reach a stable state and the processing device is in a stop state for a long time.
Disclosure of Invention
The invention mainly aims to provide a thermal deformation compensation method, a thermal deformation compensation device and a thermal deformation compensation device for a machining center, and aims to solve the problem that a system cannot faithfully feed back thermal deformation of the machining device when the temperature does not reach a stable state when the system is used for compensation at a fixed frequency.
In a first aspect, the present invention provides a thermal deformation compensation method for a machining center, the thermal deformation compensation method for the machining center comprising:
detecting whether a target common variable of a numerical control system of processing equipment is empty or not;
if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency;
if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime;
if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency;
if the downtime of the processing equipment is not more than the preset downtime, setting the measurement frequency as a third measurement frequency, and measuring the reference block of the processing equipment according to the third measurement frequency.
Optionally, before the step of detecting whether the target common variable of the numerical control system of the processing apparatus is empty, the method further includes:
and selecting any one variable in a target common variable group in the numerical control system of the processing equipment as a target common variable.
Optionally, the step of setting the measurement frequency to be the first measurement frequency includes:
calculating to obtain a first measurement frequency according to the time when the temperature of the processing equipment reaches a stable state, the processing beat of the processing equipment and the heat engine time of each shift of a production line on the processing equipment;
setting the measurement frequency as a first measurement frequency.
Optionally, before the step of detecting whether the downtime of the processing apparatus is greater than the preset downtime, the method further includes:
determining the change amount of thermal deformation of processing equipment when the processing equipment reaches a temperature stable state;
determining the machining precision;
and determining the time required for the thermal deformation variation of the processing equipment to reach half of the processing precision as the preset downtime.
Optionally, the step of setting the measurement frequency to be the second measurement frequency includes:
calculating to obtain the second measurement frequency according to the time when the temperature of the processing equipment reaches a stable state and the processing beat of the processing equipment;
setting the measurement frequency as a second measurement frequency.
In a second aspect, the present invention also provides a thermal deformation compensation apparatus for a machining center, the thermal deformation compensation apparatus comprising:
a first detection module for:
detecting whether a target common variable of a numerical control system of processing equipment is empty or not;
a first control module for:
if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency;
a second detection module for:
if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime;
a second control module for:
if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency;
a third control module for:
if the downtime of the processing equipment is not more than the preset downtime, setting the measurement frequency as a third measurement frequency, and measuring the reference block of the processing equipment according to the third measurement frequency.
Optionally, the first control module is specifically configured to:
calculating to obtain a first measurement frequency according to the time when the temperature of the processing equipment reaches a stable state, the processing beat of the processing equipment and the heat engine time of each shift of a production line on the processing equipment;
setting the measurement frequency as a first measurement frequency.
Optionally, the second control module is specifically configured to:
calculating to obtain the second measurement frequency according to the time when the temperature of the processing equipment reaches a stable state and the processing beat of the processing equipment;
setting the measurement frequency as a second measurement frequency.
Optionally, the thermal deformation compensation device of the machining center further comprises a selection module, configured to:
and selecting any one variable in a target common variable group in the numerical control system of the processing equipment as a target common variable.
Optionally, the thermal deformation compensation device of the machining center further comprises a determining module, configured to:
determining the change amount of thermal deformation of processing equipment when the processing equipment reaches a temperature stable state;
determining the machining precision;
and determining the time required for the thermal deformation variation of the processing equipment to reach half of the processing precision as the preset downtime.
In a third aspect, the present invention also provides a machining center thermal deformation compensation apparatus comprising a processor, a memory, and a machining center thermal deformation compensation program stored on the memory and executable by the processor, wherein the machining center thermal deformation compensation program, when executed by the processor, implements the steps of the machining center thermal deformation compensation method as described above.
In a fourth aspect, the present invention also provides a readable storage medium having stored thereon a machining center thermal deformation compensation program, wherein the machining center thermal deformation compensation program, when executed by a processor, implements the steps of the machining center thermal deformation compensation method as described above.
In the invention, whether a target common variable of a numerical control system of processing equipment is empty is detected; if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency; if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime; if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency; and if the downtime of the processing equipment is not more than the preset downtime, adjusting the measurement frequency to be a third measurement frequency, and measuring the reference block of the processing equipment according to the third measurement frequency. According to the invention, different measuring frequencies are set to measure the reference block on the processing equipment, so that the thermal deformation condition of the processing equipment is accurately reflected. When the processing equipment is in a state of first starting or long-time stopping, the invention can judge whether the processing equipment is in a stable state or not through the numerical control system, accurately and efficiently compensate the measurement frequency, effectively improve the stability of the processing precision of the processing equipment, and solve the problem that a large number of defective products are produced when the processing equipment is in an unstable state.
Drawings
FIG. 1 is a flowchart of an embodiment of a thermal deformation compensation method for a machining center according to the present invention;
FIG. 2 is a schematic functional block diagram of a thermal deformation compensation device of a machining center according to an embodiment of the present invention;
fig. 3 is a schematic hardware structure of a thermal deformation compensation apparatus for a machining center according to an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In a first aspect, an embodiment of the present invention provides a thermal deformation compensation method for a machining center.
In an embodiment, referring to fig. 1, fig. 1 is a flowchart illustrating an embodiment of a thermal deformation compensation method of a machining center according to the present invention, and as shown in fig. 1, the thermal deformation compensation method of the machining center includes:
step S10, detecting whether a target common variable of a numerical control system of processing equipment is empty;
in this embodiment, detecting whether the target common variable of the numerical control system of the machining apparatus is empty is implemented by internal logic of the numerical control system. Specifically, taking #100 as an example, when the numerical control system determines # 100= #0, it indicates that the processing device is in the first power-on state, and the corresponding step of setting the first measurement frequency is entered.
Step S20, if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency;
in this embodiment, after the numerical control system determines that the target common variable is empty, the processing device is in a first power-on state at this time, and the measurement frequency needs to be set to be a first measurement frequency, and the reference block on the processing device is measured according to the first measurement frequency. The first measurement frequency is calculated, and specifically, the first measurement frequency is calculated according to the time when the temperature of the processing equipment reaches a stable state, the processing beat of the processing equipment and the heat engine time of each shift of a production line on the processing equipment. The specific calculation mode is that firstly, the time of the temperature of the processing equipment reaching the steady state is calculated and subtracted by the value of the heat engine time of each shift of the production line on the processing equipment, then the time of the temperature of the processing equipment reaching the steady state is subtracted by the value of the heat engine time of each shift of the production line on the processing equipment and divided by the processing beat of the processing equipment, and the obtained value is taken as an integer upwards, so that the first measurement frequency is obtained.
The machining cycle time of the machining device means, in particular, the time required for the machining device to machine a workpiece. In general, the process cycle time of a processing device is recorded by the processing device itself, or can be recorded manually by an operator. The hot time per shift of the production line on the processing equipment is generally determined according to the specific conditions of the processing equipment for processing the parts. The time for the temperature of the processing equipment to reach a steady state is determined by the staff member based on the specific conditions of the processing equipment.
When the machining equipment is operated, the measuring head can measure the distance between the end face of the main shaft and the reference block of the clamp. And comparing the measured distance with a standard value preset by the system, wherein the obtained difference value is the deformation of the processing equipment.
Step S30, if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime;
in this embodiment, the target common variable obtained after the judgment of the numerical control system is not null, which indicates that the processing device is not in the first power-on state at this time, but the problem of whether the processing device is in the long-time power-off state is not solved yet, and the next judgment is needed. For judging whether the processing apparatus is in a state of being stopped for a long time, it is necessary to compare the stop time of the processing apparatus with a preset stop time. The main body that performs the step of judging whether the downtime of the processing apparatus is greater than the preset downtime is a PLC program. The preset downtime is determined based on the time required for the current machining apparatus to thermally deform more than half the machining accuracy.
Step S40, if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency;
in this embodiment, when the downtime of the processing apparatus is greater than the preset downtime, the PLC program determines that the processing apparatus is in a long-time shutdown state at this time, and needs to set the measurement frequency to be a second measurement frequency, and measure the reference block on the processing apparatus according to the second measurement frequency. The second measurement frequency is calculated, specifically, the second measurement frequency is calculated according to the time when the temperature of the processing equipment reaches the steady state and the processing beat of the processing equipment. The specific calculation method comprises the steps of firstly calculating the time when the temperature of the processing equipment reaches the steady state to subtract the value of the processing beat of the processing equipment, then dividing the time when the temperature of the processing equipment reaches the steady state to subtract the value of the processing beat of the processing equipment by the processing beat of the processing equipment, and taking the obtained value upwards to be an integer to obtain a second measurement frequency.
And S50, if the downtime of the processing equipment is not more than the preset downtime, setting the measurement frequency as a third measurement frequency, and measuring the reference block of the processing equipment according to the third measurement frequency.
In this embodiment, according to the previous two detections, it has been described that the processing apparatus is not in the first-time start-up state and is not in the long-time stop state, and the temperature of the processing apparatus is not changed greatly, and the processing apparatus is in a stable state. When the processing equipment is in a stable state, a fixed frequency method is adopted for measuring the frequency of the reference block on the processing equipment. Because the temperature of the processing equipment is maintained in a stable state, the main shaft of the processing equipment cannot be greatly deformed, and thermal deformation compensation is not required to be carried out on the processing equipment at the moment, so that the thermal deformation condition of the processing equipment can be faithfully reflected by adopting fixed frequency to measure the reference block on the processing equipment.
Further, in an embodiment, before the step of detecting whether the target common variable of the numerical control system of the processing apparatus is empty, the method further includes:
and selecting any one variable in a target common variable group in the numerical control system of the processing equipment as a target common variable.
In this embodiment, before detecting whether the target common variable is empty, one common variable needs to be arbitrarily selected from the target common variable group in the numerical control system as the target common variable. Different common variables exist in the numerical control system, wherein the common variables in a certain range are used as a common variable group, a specific common variable group has corresponding functions, and the numerical control system needs to select a target common variable from a corresponding target common variable group to complete a corresponding step when executing the corresponding step.
Further, in an embodiment, the step of setting the measurement frequency to be the first measurement frequency includes:
calculating to obtain a first measurement frequency according to the time when the temperature of the processing equipment reaches a stable state, the processing beat of the processing equipment and the heat engine time of each shift of a production line on the processing equipment;
setting the measurement frequency as a first measurement frequency.
In this embodiment, the machining tact of the machining apparatus specifically refers to the time required for the machining apparatus to machine a workpiece. In general, the process cycle time of a processing device is recorded by the processing device itself, or can be recorded manually by an operator. The hot time per shift of the production line on the processing equipment is generally determined according to the specific conditions of the processing equipment for processing the parts. The time for the temperature of the processing equipment to reach a steady state is determined by the staff member based on the specific conditions of the processing equipment.
The specific calculation mode of the first measurement frequency is to calculate the value of the heat engine time of each shift of the production line on the processing equipment subtracted from the time when the temperature of the processing equipment reaches the steady state, then divide the value of the heat engine time of each shift of the production line on the processing equipment subtracted from the time when the temperature of the processing equipment reaches the steady state by the processing beat of the processing equipment, and take an integer upwards from the obtained value to obtain the first measurement frequency.
Further, in an embodiment, before the step of detecting whether the downtime of the processing apparatus is greater than the preset downtime, the method further includes:
determining the change amount of thermal deformation of processing equipment when the processing equipment reaches a temperature stable state;
determining the machining precision;
the time required for the amount of change in thermal deformation of the processing apparatus to reach half the processing accuracy is determined as a preset downtime.
In this embodiment, after the temperature of the processing apparatus reaches the steady state, the amount of change in thermal deformation of the processing apparatus is determined as the downtime of the processing apparatus is prolonged. Specifically, after the processing equipment reaches a temperature stable state, the processing equipment stops running, and a measuring head is used for measuring the clamp reference block every a period of time, so that the time and the measured value are recorded.
Machining accuracy refers to an error range that machining equipment needs to meet when machining is performed, and is determined according to the condition of the machining equipment and the specific condition of a device to be machined.
The preset downtime is determined by recording the time elapsed when the amount of change in thermal deformation of the processing apparatus reaches half the processing accuracy value. This process requires a PLC program to be written first, which is used to monitor the time that the processing equipment is out of service. And judging that the processing equipment is in a long-time shutdown state when the shutdown time of the processing equipment exceeds the preset shutdown time.
Further, in an embodiment, the step of setting the measurement frequency to be the second measurement frequency includes:
calculating to obtain the second measurement frequency according to the time when the temperature of the processing equipment reaches a stable state and the processing beat of the processing equipment;
setting the measurement frequency as a second measurement frequency.
In the embodiment, whether a target common variable of a numerical control system of processing equipment is empty is detected; if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency; if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime; if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency; and if the downtime of the processing equipment is not more than the preset downtime, adjusting the measurement frequency to be a third measurement frequency, and measuring the reference block of the processing equipment according to the third measurement frequency. By this embodiment, the thermal deformation of the processing apparatus in an unstable state can be faithfully reflected.
In a second aspect, an embodiment of the present invention further provides a thermal deformation compensation device for a machining center.
Referring to fig. 2, a functional block diagram of a first embodiment of a thermal deformation compensation device for a machining center is shown.
In this embodiment, the thermal deformation compensation device of the machining center includes:
a first detection module 10 for:
detecting whether a target common variable of a numerical control system of processing equipment is empty or not;
a first control module 20 for:
if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency;
a second detection module 30 for:
if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime;
a second control module 40 for:
if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency;
a third control module 50 for:
if the downtime of the processing equipment is not more than the preset downtime, setting the measurement frequency as a third measurement frequency, and measuring the reference block of the processing equipment according to the third measurement frequency.
Optionally, the first control module 20 is specifically configured to:
calculating to obtain a first measurement frequency according to the time when the temperature of the processing equipment reaches a stable state, the processing beat of the processing equipment and the heat engine time of each shift of a production line on the processing equipment;
setting the measurement frequency as a first measurement frequency.
Optionally, the second control module 40 is specifically configured to:
calculating to obtain the second measurement frequency according to the time when the temperature of the processing equipment reaches a stable state and the processing beat of the processing equipment;
setting the measurement frequency as a second measurement frequency.
Further, in an embodiment, the thermal deformation compensation device of the machining center further includes a selection module, configured to:
and selecting any one variable in a target common variable group in the numerical control system of the processing equipment as a target common variable.
Further, in an embodiment, the thermal deformation compensation device of the machining center further includes a determining module, configured to:
determining the change amount of thermal deformation of processing equipment when the processing equipment reaches a temperature stable state;
determining the machining precision;
and determining the time required for the thermal deformation variation of the processing equipment to reach half of the processing precision as the preset downtime.
The function implementation of each module in the thermal deformation compensation device of the machining center corresponds to each step in the thermal deformation compensation method embodiment of the machining center, and the function and implementation process of each module are not described herein in detail.
In a third aspect, embodiments of the present invention provide a thermal deformation compensation apparatus for a machining center.
Referring to fig. 3, fig. 3 is a schematic hardware structure of a thermal deformation compensation apparatus for a machining center according to an embodiment of the present invention. In an embodiment of the present invention, the machining center thermal deformation compensation apparatus may include a processor 1001 (e.g., a central processing unit Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein the communication bus 1002 is used to enable connected communications between these components; the user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., WIreless-FIdelity, WI-FI interface); the memory 1005 may be a high-speed random access memory (random access memory, RAM) or a stable memory (non-volatile memory), such as a disk memory, and the memory 1005 may alternatively be a storage device independent of the processor 1001. Those skilled in the art will appreciate that the hardware configuration shown in fig. 3 is not limiting of the invention and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
With continued reference to fig. 3, an operating system, a network communication module, a user interface module, and a machining center thermal deformation compensation program may be included in the memory 1005, which is a computer storage medium in fig. 3. The processor 1001 may call a thermal deformation compensation program of the machining center stored in the memory 1005, and execute the thermal deformation compensation method of the machining center according to the embodiment of the present invention.
In a fourth aspect, embodiments of the present invention also provide a readable storage medium.
The readable storage medium of the present invention stores a machining center thermal deformation compensation program, wherein the machining center thermal deformation compensation program, when executed by a processor, implements the steps of the machining center thermal deformation compensation method as described above.
The method implemented when the thermal deformation compensation program of the machining center is executed may refer to various embodiments of the xx method of the present invention, and will not be described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising several instructions for causing a terminal device to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (8)
1. A machining center thermal deformation compensation method, characterized in that the machining center thermal deformation compensation method comprises:
detecting whether a target common variable of a numerical control system of processing equipment is empty or not;
if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency;
if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime;
if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency;
if the downtime of the processing equipment is not more than the preset downtime, setting the measurement frequency as a third measurement frequency, and measuring a reference block of the processing equipment according to the third measurement frequency;
the step of setting the measurement frequency to be the first measurement frequency includes:
calculating to obtain a first measurement frequency according to the time when the temperature of the processing equipment reaches a stable state, the processing beat of the processing equipment and the heat engine time of each shift of a production line on the processing equipment;
setting the measurement frequency as a first measurement frequency.
2. The machining center thermal deformation compensation method according to claim 1, further comprising, before the step of detecting whether the target common variable of the numerical control system of the machining apparatus is empty:
and selecting any one variable in a target common variable group in the numerical control system of the processing equipment as a target common variable.
3. The machining center thermal deformation compensation method according to claim 1, further comprising, before the step of detecting whether the machining equipment downtime is greater than a preset downtime:
determining the change amount of thermal deformation of processing equipment when the processing equipment reaches a temperature stable state;
determining the machining precision;
and determining the time required for the thermal deformation variation of the processing equipment to reach half of the processing precision as the preset downtime.
4. The method of claim 1, wherein the step of setting the measurement frequency to a second measurement frequency comprises:
calculating to obtain the second measurement frequency according to the time when the temperature of the processing equipment reaches a stable state and the processing beat of the processing equipment;
setting the measurement frequency as a second measurement frequency.
5. A machining center thermal deformation compensation device, characterized in that the machining center thermal deformation compensation device comprises:
a first detection module for:
detecting whether a target common variable of a numerical control system of processing equipment is empty or not;
a first control module for:
if a target common variable of a numerical control system of processing equipment is empty, setting a measurement frequency as a first measurement frequency, and measuring a reference block of the processing equipment according to the first measurement frequency;
a second detection module for:
if the target common variable of the numerical control system of the processing equipment is not empty, detecting whether the downtime of the processing equipment is longer than the preset downtime;
a second control module for:
if the downtime of the processing equipment is greater than the preset downtime, setting the measurement frequency as a second measurement frequency, and measuring a reference block of the processing equipment according to the second measurement frequency;
a third control module for:
if the downtime of the processing equipment is not more than the preset downtime, setting the measurement frequency as a third measurement frequency, and measuring a reference block of the processing equipment according to the third measurement frequency;
the first control module is specifically configured to:
calculating to obtain a first measurement frequency according to the time when the temperature of the processing equipment reaches a stable state, the processing beat of the processing equipment and the heat engine time of each shift of a production line on the processing equipment;
setting the measurement frequency as a first measurement frequency.
6. The machining center thermal deformation compensation device according to claim 5, wherein the second control module is specifically configured to:
calculating to obtain the second measurement frequency according to the time when the temperature of the processing equipment reaches a stable state and the processing beat of the processing equipment;
setting the measurement frequency as a second measurement frequency.
7. A machining center thermal deformation compensation apparatus comprising a processor, a memory, and a machining center thermal deformation compensation program stored on the memory and executable by the processor, wherein the machining center thermal deformation compensation program, when executed by the processor, implements the steps of the machining center thermal deformation compensation method of any one of claims 1 to 4.
8. A readable storage medium, wherein a machining center thermal deformation compensation program is stored on the readable storage medium, wherein the machining center thermal deformation compensation program, when executed by a processor, implements the steps of the machining center thermal deformation compensation method of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310503.5A CN114152238B (en) | 2021-11-03 | 2021-11-03 | Method, apparatus, device and readable storage medium for compensating thermal deformation of machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310503.5A CN114152238B (en) | 2021-11-03 | 2021-11-03 | Method, apparatus, device and readable storage medium for compensating thermal deformation of machining center |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114152238A CN114152238A (en) | 2022-03-08 |
| CN114152238B true CN114152238B (en) | 2023-10-27 |
Family
ID=80459677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111310503.5A Active CN114152238B (en) | 2021-11-03 | 2021-11-03 | Method, apparatus, device and readable storage medium for compensating thermal deformation of machining center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114152238B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5623857A (en) * | 1994-06-16 | 1997-04-29 | Hitachi Seiki Co., Ltd. | Method and apparatus for compensating for thermal distortion for a machine tool |
| DE10312025A1 (en) * | 2003-03-18 | 2004-10-07 | Delta-X GmbH Ingenieurgesellschaft Gesellschaft für Strukturanalyse | Position control error compensation method for machine, involves compensation mechanism for deformations of processing machines with continuously measuring circuit utilized on basis of finite element method computation |
| CN102854841A (en) * | 2012-09-29 | 2013-01-02 | 广东工业大学 | Shape and position error in-situ compensating and processing method for curved surface parts |
| CN203615907U (en) * | 2013-11-19 | 2014-05-28 | 重庆机床(集团)有限责任公司 | Dynamic spindle revolution precision detection device |
| CN105841664A (en) * | 2016-03-25 | 2016-08-10 | 合肥工业大学 | Small-sized phased array radar thermal deformation and temperature synchronous measuring system and measuring method thereof |
| CN106873525A (en) * | 2017-03-10 | 2017-06-20 | 华中科技大学 | A kind of spindle assemblies thermal deformation Forecasting Methodology based on Digit Control Machine Tool real time data |
| CN107303643A (en) * | 2016-04-19 | 2017-10-31 | 大隈株式会社 | The error identification method and error identification system of lathe |
| CN107918357A (en) * | 2017-12-21 | 2018-04-17 | 科德数控股份有限公司 | A kind of numerical control machining center Spindle thermal error dynamic compensation method and system |
| TW201832030A (en) * | 2017-02-15 | 2018-09-01 | 友嘉實業股份有限公司 | Thermal compensation method for influence of machine tool ambient temperature capable of reducing thermal errors and improving machining accuracy |
| CN108490883A (en) * | 2018-03-19 | 2018-09-04 | 成都飞机工业（集团）有限责任公司 | A kind of numerically-controlled machine tool pre-heating mean |
| CN110039373A (en) * | 2019-04-04 | 2019-07-23 | 华中科技大学 | A kind of main shaft of numerical control machine tool thermal deformation prediction technique and system |
| CN112147951A (en) * | 2020-09-28 | 2020-12-29 | 沈机（上海）智能系统研发设计有限公司 | Thermal error compensation method for machining equipment, device, system, medium and terminal thereof |
| CN112445189A (en) * | 2019-08-30 | 2021-03-05 | 株式会社安川电机 | Data collection system, data collection method, and program |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908240B (en) * | 2017-04-28 | 2023-04-18 | 河北工业大学 | Online testing device and testing method for thermal error of machine tool spindle |
-
2021
- 2021-11-03 CN CN202111310503.5A patent/CN114152238B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5623857A (en) * | 1994-06-16 | 1997-04-29 | Hitachi Seiki Co., Ltd. | Method and apparatus for compensating for thermal distortion for a machine tool |
| DE10312025A1 (en) * | 2003-03-18 | 2004-10-07 | Delta-X GmbH Ingenieurgesellschaft Gesellschaft für Strukturanalyse | Position control error compensation method for machine, involves compensation mechanism for deformations of processing machines with continuously measuring circuit utilized on basis of finite element method computation |
| CN102854841A (en) * | 2012-09-29 | 2013-01-02 | 广东工业大学 | Shape and position error in-situ compensating and processing method for curved surface parts |
| CN203615907U (en) * | 2013-11-19 | 2014-05-28 | 重庆机床(集团)有限责任公司 | Dynamic spindle revolution precision detection device |
| CN105841664A (en) * | 2016-03-25 | 2016-08-10 | 合肥工业大学 | Small-sized phased array radar thermal deformation and temperature synchronous measuring system and measuring method thereof |
| CN107303643A (en) * | 2016-04-19 | 2017-10-31 | 大隈株式会社 | The error identification method and error identification system of lathe |
| TW201832030A (en) * | 2017-02-15 | 2018-09-01 | 友嘉實業股份有限公司 | Thermal compensation method for influence of machine tool ambient temperature capable of reducing thermal errors and improving machining accuracy |
| CN106873525A (en) * | 2017-03-10 | 2017-06-20 | 华中科技大学 | A kind of spindle assemblies thermal deformation Forecasting Methodology based on Digit Control Machine Tool real time data |
| CN107918357A (en) * | 2017-12-21 | 2018-04-17 | 科德数控股份有限公司 | A kind of numerical control machining center Spindle thermal error dynamic compensation method and system |
| CN108490883A (en) * | 2018-03-19 | 2018-09-04 | 成都飞机工业（集团）有限责任公司 | A kind of numerically-controlled machine tool pre-heating mean |
| CN110039373A (en) * | 2019-04-04 | 2019-07-23 | 华中科技大学 | A kind of main shaft of numerical control machine tool thermal deformation prediction technique and system |
| CN112445189A (en) * | 2019-08-30 | 2021-03-05 | 株式会社安川电机 | Data collection system, data collection method, and program |
| CN112147951A (en) * | 2020-09-28 | 2020-12-29 | 沈机（上海）智能系统研发设计有限公司 | Thermal error compensation method for machining equipment, device, system, medium and terminal thereof |
Non-Patent Citations (2)
| Title |
|---|
| 基于BP神经网络的五轴数控机床热误差补偿建模;伍伟敏;文建平;孙慧;徐文庆;;内燃机与配件(02);全文 * |
| 基于FANUC G31高速跳转功能的CNC加工中心过程能力提升;池文慧;;制造技术与机床(04);第142-147页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114152238A (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110109419B (en) | Abnormality determination device, abnormality determination system, abnormality determination method, and storage medium | |
| US8055391B2 (en) | Server device and program | |
| JP2008114322A (en) | Position correcting method and position correcting device in machine tool | |
| KR20210158332A (en) | Information processing apparatus and monitoring method | |
| CN114152238B (en) | Method, apparatus, device and readable storage medium for compensating thermal deformation of machining center | |
| CN111957589A (en) | Workpiece size detection method and system and workpiece size detection control device | |
| CN110625441A (en) | Method for detecting product size on machine on numerical control machine tool | |
| KR20130072026A (en) | Tool abrasion automatic correction device for machine tool and method thereof | |
| US8166874B2 (en) | Vibration severity monitor to control press operating shutheight and process operating conditions | |
| US11774228B2 (en) | Method and apparatus for testing workpieces | |
| CN114616070A (en) | Method for detecting defective products during the processing of workpieces of identical design and associated numerically controlled workpiece processing device | |
| CN110045680B (en) | Measuring method for online detection of spatial dimension of arm support on numerical control machine tool | |
| US20220349694A1 (en) | Abnormality determination apparatus, abnormality determination method, and abnormality determination system | |
| US20190235471A1 (en) | Thermal displacement correction device | |
| KR20150041328A (en) | Automatic conversion device of themal deformation compensation parameter automatic conversion for machine tool and method thereof | |
| CN115808901A (en) | Temperature compensation method, system and medium of numerical control machine tool | |
| KR101801897B1 (en) | Process management system and method for quality control of aviation parts industry | |
| US11754994B2 (en) | Diagnostic apparatus and diagnostic method | |
| TWI410767B (en) | Parameter learning controller in a machine device and learning method thereof | |
| CN110057330B (en) | Line width measuring method and line width measuring system | |
| JPH09131642A (en) | Numerical control machine tool precision inspection device and thermal displacement inspection method of numerical control machine tool and precision inspection method | |
| KR100564026B1 (en) | TOOL Auto Compensation Measure System And Method | |
| US20210404800A1 (en) | Accuracy diagnostic device and accuracy diagnostic method for machine tool | |
| CN110863102B (en) | Method and device for correcting thermocouple value of heating section of annealing furnace | |
| CN113840687B (en) | Control device and control method for processing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |