CN112388297A - Automatic screw locking method, screw machine and storage medium - Google Patents
Automatic screw locking method, screw machine and storage medium Download PDFInfo
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- CN112388297A CN112388297A CN202011167319.5A CN202011167319A CN112388297A CN 112388297 A CN112388297 A CN 112388297A CN 202011167319 A CN202011167319 A CN 202011167319A CN 112388297 A CN112388297 A CN 112388297A
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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Abstract
The application discloses an automatic screw locking method, a screw machine and a storage medium, wherein the method is applied to the screw machine which comprises a driving mechanism and a screwdriver head connected with the power output side of the driving mechanism; the method comprises the following steps: the driving mechanism drives the screwdriver bit to lock a screw into a target hole position at a first rotating speed; when the operation parameters of the screwdriver head meet preset conditions, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished; wherein the first rotational speed is greater than the second rotational speed. This application aims at solving current electricity and criticizes life lower, leads to the change frequency of electricity criticize high, increases the manufacturing cost's of enterprise problem.
Description
Technical Field
The invention relates to the field of screw machines, in particular to an automatic screw locking method, a screw machine and a storage medium.
Background
The screw machine is a small machine for automatically locking screws. The operation structure can be divided into a material supply part and an electric screwdriver part, wherein the material supply part is used for screening and providing screws, and the electric screwdriver part is used for taking and locking the screws. The electric screwdriver generally brakes through a mechanical module. Because the mechanical brake module is a quick-wear part, the service life of the common electric screwdriver is low, and particularly when the electric screwdriver is locked at a high speed, the service life of the common electric screwdriver is about half a year, the replacement frequency of the electric screwdriver is high, and the production cost of an enterprise is increased.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
The embodiment of the application aims to solve the problems that the service life of the existing screwdriver is short, the replacement frequency of the screwdriver is high, and the production cost of an enterprise is increased.
The embodiment of the application provides an automatic screw locking method, which is applied to a screw machine, wherein the screw machine comprises a driving mechanism and a screwdriver head connected with the power output side of the driving mechanism; the method comprises the following steps:
the driving mechanism drives the screwdriver bit to lock a screw into a target hole position at a first rotating speed;
when the operation parameters of the screwdriver head meet preset conditions, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished; wherein the first rotational speed is greater than the second rotational speed.
In some embodiments, when the operating parameter of the batch head meets a preset condition, the driving mechanism adjusts the batch head to continue to lock the screw into the target hole at a second rotation speed until the screw locking is completed, including:
and when the number of running turns of the screwdriver head reaches a first set threshold value, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished.
In some embodiments, the first set threshold value accounts for 30% -90% of the number of locking turns of the batch head in the whole locking process.
In some embodiments, after the driving mechanism controls the batch head to lock the screw into the target hole at the first rotation speed, the driving mechanism further includes:
when the number of running turns of the screwdriver head reaches a second set threshold, the driving mechanism controls the screwdriver head to continuously lock the screw into the target hole at a third rotating speed, the third rotating speed is greater than the second rotating speed, the third rotating speed is less than the first rotating speed, and the second set threshold is less than the first set threshold.
In some embodiments, the first set threshold value accounts for 70% -90% of the number of locking turns of the batch head in the whole locking process, and the second set threshold value accounts for 30% -70% of the number of locking turns of the batch head in the whole locking process.
In some embodiments, when the operating parameter of the batch head meets a preset condition, the driving mechanism adjusts the batch head to continue to lock the screw into the target hole at a second rotation speed until the screw locking is completed, including:
and when the bit torque of the bit reaches a first set threshold value, the driving mechanism adjusts the bit to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is completed.
In some embodiments, after the driving mechanism controls the batch head to lock the screw into the target hole at the first rotation speed, the driving mechanism further includes:
when the bit torque of the bit reaches a second set threshold, the driving mechanism controls the bit to continuously lock the screw into the target hole at a third rotating speed, wherein the third rotating speed is greater than the second rotating speed, the third rotating speed is less than the first rotating speed, and the second set threshold is less than the first set threshold.
In some embodiments, further comprising:
and after the screw is locked, the screw is reversed according to a preset mode.
The application also provides a screw machine, which comprises a driving mechanism and a screwdriver head connected with the power output side of the driving mechanism, wherein the driving mechanism comprises a processor, a memory electrically connected with the processor and an automatic screw locking program which is stored on the memory and can run on the processor; the automatic screw locking program, when executed by the processor, implements the steps as an automatic screw locking method.
The present application also contemplates a computer-readable storage medium having one or more programs stored thereon that are executable by one or more processors to implement, for example, the steps in an automatic screw locking method.
This application sets up the preset condition according to the operating parameter of criticizing the head, and the screw is attached to the higher first rotational speed lock of the preceding stage use of criticizing the head lock of attaching the screw, and the screw is attached to the lower second rotational speed lock of the back stage use of criticizing the head lock of attaching the screw for when the screw lock attaches the completion, the screw machine only need brake the criticism head of lower rotational speed, thereby improve the life of electric screwdriver, reduce the change frequency of electric screwdriver, reduce the manufacturing cost of enterprise. In addition, the process of locking the screw is divided into a first rotating speed with a higher rotating speed and a second rotating speed with a lower rotating speed, so that higher working efficiency is kept in the previous stage of locking the screw, and meanwhile, the locking precision in the later stage of locking the screw is improved. The higher the rotating speed is, the higher the probability of screw thread slipping is, when the running turns of the screwdriver head reach a first set threshold value, the rotating speed of the screwdriver head is reduced, the torque of the screwdriver head is increased, the probability of screw thread slipping is favorably reduced, and the locking precision of the screwdriver head driving screw to be locked in a target hole site is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a servo motor and a bit in a screw machine according to the present application;
FIG. 2 is a hardware framework diagram of one embodiment of the drive mechanism of the present application;
FIG. 3 is a block diagram of a first embodiment of an automatic screw locking method according to the present application;
FIG. 4 is a block diagram of a first embodiment of the automatic screw locking method of FIG. 3, wherein the first run parameter is a number of run turns of the screw head;
FIG. 5 is a block diagram of a second embodiment of an automatic screw locking method according to the present application;
FIG. 6 is a block flow diagram of a third embodiment of an automatic screw locking method of the present application;
FIG. 7 is a block flow diagram of a fourth embodiment of an automatic screw locking method of the present application;
fig. 8 is a block flow diagram of a fifth embodiment of an automatic screw locking method according to the present application.
Detailed Description
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The existing electric screwdriver generally brakes through a mechanical module. Because the mechanical brake module is a quick-wear part, the service life of the common electric screwdriver is low, and particularly when the electric screwdriver is locked at a high speed, the service life of the common electric screwdriver is about half a year, the replacement frequency of the electric screwdriver is high, and the production cost of an enterprise is increased.
In addition, an intelligent electric screwdriver is also sold in the market, but the process of locking the screw of the intelligent electric screwdriver is complex and the price is high. The intelligent electric batch is utilized to be put into production, so that the efficiency is lower and the production cost is high.
Therefore, the problems that the service life of the existing electric screwdriver is short, the replacement frequency of the electric screwdriver is high, and the production cost of an enterprise is increased need to be solved. In view of the above, the present application provides an automatic screw locking method, a screw machine and a storage medium.
Referring to fig. 1 and 2, a screw machine is described, which includes a driving mechanism and a batch head 10 connected to a power output side of the driving mechanism, wherein the driving mechanism includes a processor 101, a memory 102 electrically connected to the processor 101, and a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
It should be noted that the bit refers to a screwdriver bit connected to the power output side of the driving mechanism for screwing. In this embodiment, the driving mechanism may adopt various motors for driving the bit to rotate, such as a stepping motor, a common motor, etc. In order to better control the rotation speed and torque of the bit during the locking process of the screw, the driving mechanism in this application uses a servo driver (not shown) in combination with the servo motor 20 to control the bit to perform the screw locking operation. The servo driver outputs current to the servo motor, and the servo motor converts the current signal into torque and rotating speed to drive the batch head to rotate. The current controls the whole process of locking the screw, and the screw is locked by switching the rotating speed of the screwdriver head according to the magnitude of the current.
It should be noted that the screw machine of this embodiment also includes touch panel, and this touch panel accessible Modbus485 communication and servo motor 20 communication can set up the numerical value of parameters such as "batch head torque", "batch head rotational speed", "lock attaches the number of turns", "reversal number of turns" on line, can show the moment of lock attaching process, batch head rotational speed and the lock attaching time of whole lock attaching process in real time, and can keep parameter setting record and be convenient for the customer to look up on line.
The processor 101 may be a Central Processing Unit (CPU), and the processor 101 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor 101 or the like.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory, which is a computer storage medium, may include an automatic screw locking program; and the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and perform the following operations:
in one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
the driving mechanism drives the screwdriver bit to lock a screw into a target hole position at a first rotating speed;
when the operation parameters of the screwdriver head meet preset conditions, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished; wherein the first rotational speed is greater than the second rotational speed.
In one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
when the operation parameters of the screwdriver head meet preset conditions, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is completed, and the method comprises the following steps:
and when the number of running turns of the screwdriver head reaches a first set threshold value, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished.
In one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
the first set threshold value accounts for 30% -90% of the locking turns of the batch head in the whole locking process.
In one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
after the driving mechanism controls the screwdriver head to lock the screw into the target hole site at a first rotating speed, the driving mechanism further comprises:
when the number of running turns of the screwdriver head reaches a second set threshold, the driving mechanism controls the screwdriver head to continuously lock the screw into the target hole at a third rotating speed, the third rotating speed is greater than the second rotating speed, the third rotating speed is less than the first rotating speed, and the second set threshold is less than the first set threshold.
In one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
the first set threshold value accounts for 70% -90% of the locking turns of the batch head in the whole locking process, and the second set threshold value accounts for 30% -70% of the locking turns of the batch head in the whole locking process.
In one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
when the operation parameters of the screwdriver head meet preset conditions, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is completed, and the method comprises the following steps:
and when the bit torque of the bit reaches a first set threshold value, the driving mechanism adjusts the bit to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is completed.
In one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
after the driving mechanism controls the screwdriver head to lock the screw into the target hole site at a first rotating speed, the driving mechanism further comprises:
when the bit torque of the bit 10 reaches a second set threshold, the driving mechanism controls the bit 10 to continue to lock the screw into the target hole at a third rotation speed, where the third rotation speed is greater than the second rotation speed, and the third rotation speed is less than the first rotation speed, and the second set threshold is less than the first set threshold.
In one embodiment, the processor 101 may be configured to call the automatic screw locking program stored in the memory 102 and execute the method comprising:
and after the screw is locked, the screw is reversed according to a preset mode.
The screw machine of this application sets up the preset condition according to the operating parameter of criticizing head 10, the screw is attached to the higher first rotational speed lock of the preceding stage use of criticizing head 10 lock attaching screw, the screw is attached to the lower second rotational speed lock of the later stage use of criticizing head 10 lock attaching screw, make when the screw lock attaches the completion, the screw machine only needs to brake the criticizing head 10 of lower rotational speed, thereby improve the life of screwdriver, reduce the change frequency of screwdriver, reduce the manufacturing cost of enterprise. In addition, the screws are locked at a lower second rotating speed at the later stage of locking the screws by the screwdriver head 10, so that the probability of screw thread slipping is reduced, and the locking precision of the screwdriver head 10 for driving the screws to be locked into the target hole positions is improved.
Referring to fig. 3, based on the structure and hardware architecture of the screw machine, a first embodiment of the automatic screw locking method of the present application is provided, where the automatic screw locking method includes the following steps:
s110, the driving mechanism drives the screwdriver head 10 to lock a screw into a target hole at a first rotating speed;
as mentioned above, the driving mechanism in this embodiment includes the servo driver and the servo motor. In the initial stage of screw locking, in order to improve the efficiency of the locking process in the initial stage of screw locking, the output current of the servo driver is set to drive the power output side of the servo motor to drive the bit 10 to rotate at the first rotating speed, so as to lock the screw into the target hole position. Wherein the first rotational speed may be set to a higher speed. For example, the first rotational speed may be set to 1500 rpm, 2000 rpm, 2500 rpm, or the like. It should be understood that the specific numerical values mentioned above are numerical values enumerated in order to help those skilled in the art understand the technical solution of the present application, and should not be construed as limiting the present application.
S120, when the operation parameters of the batch head 10 meet preset conditions, the driving mechanism adjusts the batch head 10 to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished; wherein the first rotational speed is greater than the second rotational speed.
The second rotation speed may be set to 500 rpm, etc. It should be understood that the specific numerical values mentioned above are numerical values enumerated in order to help those skilled in the art understand the technical solution of the present application, and should not be construed as limiting the present application.
The conventional screwdriver usually adopts the same high speed to lock in the process of locking the screw, so that the mechanical brake module is required to brake when the locking screw is nearly finished, and the loss of the mechanical brake module is accelerated in the long term, so that the replacement frequency of the screwdriver becomes fast, and the production cost is improved. In this embodiment, when the screwdriver bit 10 locks the screw to a certain stage, the servo driver outputs a current to drive the power output side of the servo motor to adjust the screwdriver bit 10 to continue to lock the screw into the target hole at the second rotation speed until the screw locking is completed. Wherein the second rotational speed is less than the first rotational speed.
Further, the process of locking the screw by the batch head 10 can be represented by some operation parameters, and when the operation parameters of the batch head 10 meet the preset conditions, the rotation speed of the batch head 10 is adjusted. For example, a distance sensor or a light sensor may be disposed in the target hole site to detect the progress of the locking of the screw by the bit 10 by detecting the depth of the screw into the target hole site. In the present embodiment, the progress of the process of locking the screw by the batch head 10 can be represented by the number of running turns. Therefore, referring to fig. 4, the step S120 includes:
s121: when the running turns of the screwdriver head 10 reach a first set threshold value, the driving mechanism adjusts the screwdriver head 10 to continuously lock the screw into the target hole at a second rotating speed until the screw locking is completed. Wherein the first rotational speed is greater than the second rotational speed.
It can be understood that the number of running turns of the batch head 10 for driving the screw to lock into the target hole site is limited, and when the number of running turns of the batch head 10 reaches a certain value (i.e. a first set threshold), the locking progress of the screw can be described. For example, the number of operation turns required for the batch head 10 to complete the screw locking is 100, and when the batch head 10 is in a normal locking state, the operation of the batch head 10 for 50 turns indicates that the process of locking the screw into the target hole site by the batch head 10 is half.
And when the running turns of the screwdriver head 10 reach a first set threshold value, continuing to lock the screw into the target hole position by using the screwdriver head 10 at a second rotating speed which is lower than the first rotating speed until the screw locking is finished. So with one, on the one hand, when the lock attaches the completion, the screw machine only need to criticize head 10 with lower rotational speed pivoted to reduce the loss to the electricity wholesale, improve the life of electricity wholesale, reduce the change frequency of electricity wholesale, reduce the manufacturing cost of enterprise. Further, because the power output side of the servo driver for outputting current to drive the servo motor drives the batch head 10 to rotate in the embodiment, a mechanical brake module is not needed to brake the batch head, the loss of the electric batch is further reduced, the service life of the electric batch is prolonged, the replacement frequency of the electric batch is reduced, and the production cost of an enterprise is reduced.
On the other hand, the process of locking the screw is divided into a first rotating speed with a higher rotating speed and a second rotating speed with a lower rotating speed, so that higher working efficiency is kept in the previous stage of locking the screw, and meanwhile, the locking precision in the later stage of locking the screw is improved. Because the higher the rotating speed, the higher the probability of screw thread slipping, when the running turns of the screwdriver bit 10 reach the first set threshold value, the rotating speed of the screwdriver bit 10 is reduced, the torque of the screwdriver bit 10 is increased, the probability of screw thread slipping is favorably reduced, and the locking precision of the screwdriver bit 10 for driving a screw to be locked in a target hole site is improved.
It should be noted that the first set threshold may be set according to actual requirements, for example, the first set threshold may be set to account for 30% -90% of the number of locking turns of the batch head 10 in the whole locking process. Wherein, the number of times of locking refers to the total number of running times of the screwdriver head 10 driving the screw from the beginning to the completion of locking. The number of locking turns of the bit 10 in the whole locking process is determined for the screw and the target hole site matched with each other, and the error of the number of locking turns is usually not large.
It should be noted that the first threshold value relates to the efficiency and accuracy of the locking of the screws by the batch head 10. If the proportion of the number of locking turns of the first set threshold in the whole locking process is higher, the proportion of the higher speed of the first speed in the locking process of the batch head 10 is higher, which is beneficial to improving the efficiency of locking the screw, but negatively affects the accuracy of locking the screw; on the contrary, if the ratio of the number of locking turns of the first set threshold in the whole locking process is lower, it indicates that the ratio of the lower speed and the lower speed in the second speed in the locking process of the batch head 10 is higher, which is beneficial to improving the precision of the locking screw, but adversely affects the efficiency of the screw locking. Therefore, in order to balance the efficiency and accuracy of the locking screws, the first set threshold can be set to be 50% -70% of the locking turns of the batch head 10 in the whole locking process.
The preset condition is set according to the operation parameter of the screwdriver bit 10 in the embodiment, the screwdriver bit 10 is locked at a higher first rotating speed in the front stage of the screwdriver bit 10, and the screwdriver bit 10 is locked at a lower second rotating speed in the rear stage of the screwdriver bit 10, so that when the screwdriver bit 10 is locked, the screwdriver bit is only required to brake at a lower rotating speed, the service life of the screwdriver bit is prolonged, the replacement frequency of the screwdriver bit is reduced, and the production cost of an enterprise is reduced. In addition, the process of locking the screw is divided into a first rotating speed with a higher rotating speed and a second rotating speed with a lower rotating speed, so that higher working efficiency is kept in the previous stage of locking the screw, and meanwhile, the locking precision in the later stage of locking the screw is improved. The higher the rotating speed is, the higher the probability of screw thread slipping is, when the running turns of the screwdriver head reach a first set threshold value, the rotating speed of the screwdriver head is reduced, the torque of the screwdriver head is increased, the probability of screw thread slipping is favorably reduced, and the locking precision of the screwdriver head driving screw to be locked in a target hole site is improved.
Based on the same inventive concept, please refer to fig. 5, the present application further provides an embodiment two, which is based on the embodiment one.
Example two
The automatic screw locking method of the embodiment comprises the following steps:
s210, the driving mechanism drives the screwdriver head 10 to lock a screw into a target hole position at a first rotating speed;
s220, when the number of running turns of the screwdriver head 10 reaches a second set threshold value, controlling the screwdriver head 10 to continuously lock the screw into the target hole at a third rotating speed by the driving mechanism, wherein the third rotating speed is less than the first rotating speed;
s230, when the number of running turns of the screwdriver head 10 reaches a first set threshold value, the driving mechanism adjusts the screwdriver head 10 to continuously lock the screw into the target hole at a second rotating speed until the screw locking is finished; the second rotating speed is less than a third rotating speed, and the first set threshold is greater than the second set threshold.
In this embodiment, a judgment condition of a second set threshold is added, so that the number of running turns of the batch head 10 is locked with screws at a third rotation speed when the second set threshold is reached; and locking the screw at a second rotating speed when the first set threshold is reached. Until the screw locking is completed. The third rotating speed is between the first rotating speed and the second rotating speed, and the second set threshold value is smaller than the first set threshold value.
That is, in the present embodiment, the first rotational speed corresponds to a high rotational speed, the third rotational speed corresponds to a medium rotational speed, and the second rotational speed corresponds to a low rotational speed. For example, the first rotational speed may be set to 2000 revolutions per minute, the third rotational speed may be set to 1000 revolutions per minute, and the second rotational speed may be set to 500 revolutions per minute. It should be understood that the specific numerical values mentioned above are numerical values enumerated in order to help those skilled in the art understand the technical solution of the present application, and should not be construed as limiting the present application.
The number of running turns of the batch head 10 reaches the second set threshold as a turning point for judging the conversion of the batch head 10 from the high speed rotation speed to the medium speed rotation speed. By providing the step S220, the transition of the batch head 10 between the first rotation speed at the high rotation speed and the second rotation speed at the low rotation speed is smoother and more stable. If the high-speed rotation speed is directly switched to the low-speed rotation speed, the current fluctuation of the servo driver is large, and the conversion effect from the high-speed rotation speed to the low-speed rotation speed is poor. This embodiment is through setting up the middle speed rotational speed of third rotational speed as the transition between first rotational speed and the second rotational speed, is favorable to improving the smoothness degree that criticizes head 10 lock attaches the screw, improves the lock that criticizes head 10 lock attaches the screw and attaches the precision to and improve the lock and attach the uniformity of product.
The first set threshold and the second set threshold may be set according to actual needs. For example, the first set threshold value accounts for 70% -90% of the locking turns of the batch head 10 in the whole locking process, and the second set threshold value accounts for 30% -70% of the batch head 10 in the whole locking process.
It should be noted that, in the same principle as the first embodiment, the first set threshold and the second set threshold are related to the efficiency and accuracy of the locking of the screw by the batch head 10. The values of the first set threshold and the second set threshold should be reasonably distributed, so that the screwdriver head 10 drives the screw to lock the screw at a high rotation speed as far as possible at the initial stage of locking the screw, and the locking efficiency is improved; in the adjacent completion stage of locking screws, the screws are driven to be locked at a low rotating speed as far as possible, the locking precision is improved, and the proper middle rotating speed stage is set, so that the screwdriver head 10 can achieve proper buffering and transition between a high rotating speed and a low rotating speed. For example, when the number of locking turns is 100 turns, the second set threshold is set to 60 turns, and the first set threshold is set to 90 turns. The servo motor controls the batch head 10 to be converted from a high rotation speed to a medium rotation speed when the number of running turns of the batch head 10 reaches 60 turns, and controls the batch head 10 to be converted from the medium rotation speed to a low rotation speed when the number of running turns of the batch head 10 reaches 90 turns. At the moment, the ratio of the high rotating speed to the medium rotating speed in the locking process is high, and the locking efficiency and the locking precision are favorably considered.
Based on the same inventive concept, please refer to fig. 6, the present application further provides a third embodiment, which is based on the first embodiment.
EXAMPLE III
The automatic screw locking method of the embodiment comprises the following steps:
s310, the driving mechanism drives the screwdriver head 10 to lock a screw into a target hole position at a first rotating speed;
s320, when the bit torque of the bit 10 reaches a first set threshold value, the driving mechanism adjusts the bit 10 to continuously lock the screw into the target hole at a second rotating speed until the screw locking is completed; wherein the first rotational speed is greater than the second rotational speed.
The present embodiment uses the bit torque of the bit 10 as a trigger condition for converting the bit rotation speed. When the screwdriver bit 10 locks the screw at the first rotating speed, the torque of the screwdriver bit is smaller, the torque of the screwdriver bit gradually increases along with the progress of locking the screw until the torque of the screwdriver bit 10 reaches a first set threshold value, and the screwdriver bit 10 continues to lock the screw into the target hole position at the second rotating speed until the screw locking is completed. The first set threshold of the bit torque can be set according to actual conditions, and specific values of the first set threshold of the bit torque are not limited herein.
This embodiment is according to the first torque setting of batch head 10 and predetermines the condition, and the screw is attached to the higher first rotational speed lock of the preceding stage use of the screw at the first 10 lock of batch head, and the screw is attached to the lower second rotational speed lock of the later stage use of the screw at the first 10 lock of batch head, makes when the screw lock attaches the completion, and the screw machine only needs to brake the first 10 of batch of lower rotational speed, thereby improves the life of electric screwdriver, reduces the change frequency of electric screwdriver, reduces the manufacturing cost of enterprise. In addition, the process of locking the screw is divided into a first rotating speed with a higher rotating speed and a second rotating speed with a lower rotating speed, so that higher working efficiency is kept in the previous stage of locking the screw, and meanwhile, the locking precision in the later stage of locking the screw is improved. The higher the rotating speed is, the higher the probability of screw thread slipping is, when the running turns of the screwdriver head reach a first set threshold value, the rotating speed of the screwdriver head is reduced, the torque of the screwdriver head is increased, the probability of screw thread slipping is favorably reduced, and the locking precision of the screwdriver head driving screw to be locked in a target hole site is improved.
Based on the same inventive concept, please refer to fig. 7, the present application further provides a fourth embodiment, which is based on the third embodiment.
Example four
The automatic screw locking method of the embodiment comprises the following steps:
s410, the driving mechanism drives the screwdriver head 10 to lock a screw into a target hole at a first rotating speed;
s420, when the bit torque of the bit 10 reaches a second set threshold, the driving mechanism controls the bit 10 to continuously lock the screw into the target hole at a third rotating speed, wherein the third rotating speed is less than the first rotating speed;
s430, when the bit torque of the bit 10 reaches a first set threshold, the driving mechanism adjusts the bit 10 to continuously lock the screw into the target hole at a second rotating speed until the screw locking is completed; the second rotating speed is less than a third rotating speed, and the first set threshold is greater than the second set threshold.
In the embodiment, a judgment condition of a second set threshold is added on the basis of the third embodiment, so that the screw is locked at a third rotating speed when the bit torque of the bit 10 reaches the second set threshold; and locking the screw at a second rotating speed when the first set threshold is reached. Until the screw locking is completed. When the screw is locked at the second rotation speed, the rotation speed of the screwdriver bit is minimum, and the torque is maximum.
That is, in the present embodiment, the first rotational speed corresponds to a high rotational speed, the third rotational speed corresponds to a medium rotational speed, and the second rotational speed corresponds to a low rotational speed. The batch head torque of the batch head 10 reaches the second set threshold as a turning point for judging the conversion of the batch head 10 from the high speed rotation speed to the medium speed rotation speed. By providing the step S420, the transition of the batch head 10 between the first rotation speed at the high rotation speed and the second rotation speed at the low rotation speed is smoother and more stable. If the high-speed rotation speed is directly switched to the low-speed rotation speed, the current fluctuation of the servo driver is large, and the conversion effect from the high-speed rotation speed to the low-speed rotation speed is poor. This embodiment is through setting up the middle speed rotational speed of third rotational speed as the transition between first rotational speed and the second rotational speed, is favorable to improving the smoothness degree that criticizes head 10 lock attaches the screw, improves the lock that criticizes head 10 lock attaches the screw and attaches the precision to and improve the lock and attach the uniformity of product.
It should be noted that, similar to the embodiment, the numerical values of the first set threshold and the second set threshold should also be reasonably assigned. So as to compromise the efficiency and accuracy of the locking.
Based on the same inventive concept, please refer to fig. 8, the present application further provides an embodiment five, which is based on the embodiments one to four.
Compared with the first to the fourth embodiments, the automatic screw locking method of the present embodiment further includes:
and S500, after the screw is locked and attached, reversing the screw according to a preset mode.
It should be noted that the step S500 of the present embodiment may be set at the end of any one of the first to fourth embodiments. After the screw locking is finished, the recycling of the screwdriver bits is prevented from being blocked in order to avoid over-tight screw locking. After the screw is locked, the screw is rotated in the direction opposite to the locking direction according to the preset mode. Wherein the preset pattern is different number of reverse turns for different settings of the screw model and kind.
The present application also provides a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of the automatic screw locking method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The automatic screw locking method is characterized by being applied to a screw machine, wherein the screw machine comprises a driving mechanism and a screwdriver head connected with the power output side of the driving mechanism; the method comprises the following steps:
the driving mechanism drives the screwdriver bit to lock a screw into a target hole position at a first rotating speed;
when the operation parameters of the screwdriver head meet preset conditions, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished; wherein the first rotational speed is greater than the second rotational speed.
2. The method as claimed in claim 1, wherein when the operating parameters of the batch head meet the preset conditions, the driving mechanism adjusts the batch head to continue to lock the screw into the target hole at the second rotation speed until the screw locking is completed, and the method comprises:
and when the number of running turns of the screwdriver head reaches a first set threshold value, the driving mechanism adjusts the screwdriver head to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is finished.
3. The method according to claim 2, wherein the first set threshold value is 30% -90% of the number of times of locking of the batch head in the whole locking process.
4. The method of claim 2, wherein after the driving mechanism controls the batch head to lock the screw into the target hole at the first rotation speed, the method further comprises:
when the number of running turns of the screwdriver head reaches a second set threshold, the driving mechanism controls the screwdriver head to continuously lock the screw into the target hole at a third rotating speed, the third rotating speed is greater than the second rotating speed, the third rotating speed is less than the first rotating speed, and the second set threshold is less than the first set threshold.
5. The method of claim 4, wherein the first set threshold value is 70% -90% of the number of the locking turns of the batch head in the whole locking process, and the second set threshold value is 30% -70% of the number of the locking turns of the batch head in the whole locking process.
6. The method as claimed in claim 1, wherein when the operating parameters of the batch head meet the preset conditions, the driving mechanism adjusts the batch head to continue to lock the screw into the target hole at the second rotation speed until the screw locking is completed, and the method comprises:
and when the bit torque of the bit reaches a first set threshold value, the driving mechanism adjusts the bit to continuously lock the screw into the target hole position at a second rotating speed until the screw locking is completed.
7. The method of claim 6, wherein after the driving mechanism controls the batch head to lock the screw into the target hole at the first rotation speed, the method further comprises:
when the bit torque of the bit reaches a second set threshold, the driving mechanism controls the bit to continuously lock the screw into the target hole at a third rotating speed, wherein the third rotating speed is greater than the second rotating speed, the third rotating speed is less than the first rotating speed, and the second set threshold is less than the first set threshold.
8. The method according to any one of claims 1-7, further comprising:
and after the screw is locked, the screw is reversed according to a preset mode.
9. The screw machine is characterized by comprising a driving mechanism and a batch head connected with the power output side of the driving mechanism, wherein the driving mechanism comprises a processor, a memory electrically connected with the processor and an automatic screw locking program which is stored on the memory and can run on the processor; the automatic screw locking program when executed by the processor implements the steps of the method of any one of claims 1 to 8.
10. A computer readable storage medium, storing one or more programs, executable by one or more processors, for performing the steps of the method of any one of claims 1 to 8.
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| CN115446582A (en) * | 2022-08-15 | 2022-12-09 | 深圳研控自动化科技股份有限公司 | Screw locking method, system, terminal device and medium |
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Application publication date: 20210223 |