Grinding controller and control method thereof

Abstract

The application discloses a kind of grinding controller and control method thereof, including control unit and electric power detection probe, control unit is connected with grinding machine control system and carries out data communication, grinding machine control system drives abrasive stone to rotate by motor, and abrasive stone is controlled to move to the workpiece to be ground at a certain speed, electric power detection probe detects the electric power value of the motor and is transmitted to control unit, control unit is judged according to the received signal and forms the signal of control abrasive stone approaching speed and grinding process.By setting electric power detection probe, the contact point of abrasive stone and the workpiece to be ground is judged by detecting the electric power value of the motor, whether it will cause product defects is judged, and alarm information is made in time, on the one hand, the workpiece to be ground is approached at a higher speed, and an alarm is given and a retreat is made when the abrasive stone is damaged, the production efficiency is improved.On the other hand, the quality of the workpiece to be ground is guaranteed, and the production of defective products is eliminated.

Description

Technical Field

[0001] This invention relates to the field of grinding machine technology, and in particular to a grinding controller and its control method. Background Technology

[0002] In the grinding process, the cutting path is usually set according to the precision requirements of the workpiece to be ground, thereby achieving grinding. To improve production efficiency, it is often set that the grinding stone approaches the workpiece at a relatively high speed, and then grinds at a lower speed after contact. However, due to the large individual differences of the workpieces, there are discrepancies between the workpiece and the ideal model planned in the path. For products with excessive allowance, the workpiece may come into contact with the grinding stone at high speed, causing scratches on the surface of the grinding stone due to the high approach speed, resulting in a defective workpiece after grinding. Summary of the Invention

[0003] A grinding controller includes a control unit and a power detection probe. The control unit is connected to the grinding machine control system and communicates with it via data. The grinding machine control system drives the grinding stone to rotate via a motor and controls the grinding stone to move toward the workpiece to be ground at a certain speed. The power detection probe detects the power value of the motor and transmits it to the control unit. The control unit judges and generates signals to control the approach speed of the grinding stone and the grinding process based on the received signals.

[0004] Furthermore, the controller is connected to the grinding machine control system via parallel port, analog input, RS-232C, or TCP / IP.

[0005] A method of operating a grinding controller as described above includes the following steps:

[0006] A. Set the grinding trajectory through the grinding machine control system, and set the rapid grinding section, the semi-rapid grinding section AB, the buffer section BC, and the rough grinding section CD respectively;

[0007] B. The grinding machine control system drives the grinding stone to rotate via a motor and approaches the workpiece to be ground at a speed of V1. When the grinding stone moves to the grinding trajectory point A, the change in the power of the motor is detected by a power detection probe.

[0008] C. Determine whether the grinding stone collides with the workpiece during its movement to A by measuring the change in power value of the power detection probe. If it collides with the workpiece, proceed to step D; otherwise, proceed to step E.

[0009] D. An alarm is triggered indicating a large remaining product quantity, prompting manual intervention and a return to the customer's location.

[0010] E. Control the grinding stone to approach the workpiece to be ground at a speed of V2. When the grinding stone moves to the grinding trajectory point B, detect the power change value of the motor in the quasi-urgent section AB through the power detection probe, and judge whether the grinding stone in the quasi-urgent section contacts the workpiece to be ground. If V2 < V1 and it contacts the workpiece to be ground, enter step F; otherwise, enter step G.

[0011] F. Control the grinding stone to approach the workpiece to be ground at a speed of V4, perform rough grinding on the workpiece to be ground, and then perform fine grinding and finish grinding, where V4 < V2.

[0012] G. Adjust the grinding stone to approach the workpiece to be ground at a buffering speed of V3 to the grinding trajectory point C. Judge whether the grinding stone contacts the workpiece to be ground in the buffering section BC through the power change value of the power detection probe. If it contacts, enter step F; otherwise, enter H, where V4 < V3 < V2.

[0013] H. Adjust the grinding stone to approach the workpiece to be ground at a rough grinding speed of V4 to the grinding trajectory point D. Judge whether the grinding stone contacts the workpiece to be ground in the rough grinding section from C to D through the power change value of the power detection probe. If it contacts, enter step F; otherwise, enter I.

[0014] I. Alarm for small product margin and perform backward movement.

[0015] Furthermore, the speed V3 is a variable speed.

[0016] Furthermore, the approaching speed for fine grinding is V5, and the approaching speed for finish grinding is V6, where V6 < V5 < V4.

[0017] Furthermore, V1 > V0, V2 < V0, and V0 is the critical approaching speed at which the workpiece to be ground can definitely cause damage to the grinding stone.

[0018] Adopting the technical solution of the present invention has the following technical effects:

[0019] By setting the power detection probe, the contact point between the grinding stone and the workpiece to be ground is judged by detecting the power value of the motor, and it is judged whether it will cause product defects, and an alarm message is sent in time. On the one hand, it enables the grinding stone to approach the workpiece to be ground at a relatively high speed, and alarms and performs backward movement when the grinding stone is damaged, improving production efficiency. On the other hand, it ensures the quality of the workpiece to be ground and eliminates the generation of defective products.

[0020] The grinding trajectory is divided into a rapid section, a quasi-rapid section, a buffering section, and a rough grinding section, thus effectively reducing the time consumed by the contact between the grinding stone and the workpiece to be ground, and immediately converting to the approaching speed of the rough grinding section when contacting, effectively ensuring the accuracy of the product.

[0021] By using the variable speed V3 as the approaching speed in the buffer zone, the contact speed is increased without causing defects in the workpiece to be ground and the grinding stone.

[0022] This application is effectively compatible with existing grinding machines and is applicable to the modification of existing grinding machines. Attached Figure Description

[0023] Figure 1 This is a partial hardware structure diagram of Embodiment 1.

[0024] Figure 2 This is a diagram showing the electrical changes when the grinding stone is close to the workpiece being ground.

[0025] Figure 3 This is a flowchart of the processing in this embodiment. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the present invention. Other systems, methods, and / or features of this embodiment will become apparent to those skilled in the art after reviewing the following detailed description. All such additional systems, methods, features, and advantages are intended to be included within this specification, within the scope of the invention, and protected by the appended claims. Further features of the disclosed embodiments are described in the following detailed description, and these features will become apparent from the following detailed description.

[0027] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," or "right" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred mechanism or component must have a specific orientation or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0028] like Figure 1-3As shown in the figure, in this embodiment, a control unit 1 and a power detection probe 2 are added to an existing grinding machine. The control unit 1 is connected to the grinding machine control system 3 in a parallel port mode, an analog mode, an RS-232C or a TCP / IP mode. The control unit 1 communicates with the grinding machine control system 3. The grinding machine control system 3 can be an existing grinding machine control system or a dedicated grinding machine control system that matches the control unit 1 of this embodiment. The difference is that the latter has better compatibility. The grinding machine control system 3 drives the grinding stone 4 to rotate through a motor and controls the grinding stone to move towards the workpiece to be ground 5 at a certain speed. The power detection probe detects the power value of the motor and transmits it to the control unit 1. The control unit 1 judges based on the received signal and forms signals for controlling the approaching speed of the grinding stone and the grinding process.

[0029] The working method of this embodiment is as follows:

[0030] A working method using the above-mentioned grinding controller includes the following steps:

[0031] A. Set the grinding trajectory through the grinding machine control system, and respectively set the rapid section, the quasi-rapid section AB, the buffer section BC, and the rough grinding section CD. The limits of each section are related to the material to be ground. According to the material to be ground, the critical approaching speed V0 that causes damage to the grinding stone can be determined;

[0032] B. The grinding machine control system drives the grinding stone to rotate through a motor and approaches the workpiece to be ground at a speed of V1. The grinding stone moves to the grinding trajectory point A. The power change value of the motor is detected through the power detection probe. The speed V1 > V0, and V1 mainly considers the accuracy of the workpiece to be ground;

[0033] C. Judge whether the grinding stone collides with the workpiece to be ground during the movement to point A through the power change value of the probe GE. If it collides with the workpiece to be ground, enter step D; otherwise, enter step E;

[0034] D. Alarm for a large amount of remaining product and notify manual handling and perform a retreat;

[0035] E. Control the grinding stone to approach the workpiece to be ground at a speed of V2. The grinding stone moves to the grinding trajectory point B. The power change value of the motor in the quasi-rapid section AB is detected through the probe GE. Judge whether the grinding stone contacts the workpiece to be ground in the quasi-rapid section. V2 < V1. If it contacts the workpiece to be ground, enter step F; otherwise, enter step G;

[0036] F. Control the grinding stone to approach the workpiece to be ground at a speed of V4, perform rough grinding on the workpiece to be ground, and then perform fine grinding and finish grinding. The approaching speed of fine grinding is V5, and the approaching speed of finish grinding is V6. V6 < V5 < V4, V4 < V2. The speed V2 will not cause damage to the grinding stone, but since the speed of V2 is greater than that of rough grinding, the rough grinding speed should be immediately switched after contacting the workpiece to be ground;

[0037] G. Adjust the grinding stone to approach the workpiece at a buffer speed of V3 towards the grinding trajectory point C. Speed ​​V3 is variable and related to the required precision of the workpiece. Based on this precision requirement, a mapping relationship is established between the distance between the grinding stone and the target workpiece and speed V3. The closer the grinding stone is to point B, the closer speed V3 is to V2; the closer it is to point C, the closer speed V3 is to V4. The change in the electrical voltage of probe GE determines whether the grinding stone contacts the workpiece in the buffer section BC. If it does, proceed to step F; otherwise, proceed to step H. <V3<V2;

[0038] H. Adjust the grinding stone to approach the workpiece to be ground at a rough grinding speed of V4 until the grinding trajectory point D. Determine whether the grinding stone contacts the workpiece in the rough grinding section from C to D by the change value of the power of the probe GE. If it contacts the workpiece, proceed to step F; otherwise, proceed to step I.

[0039] I. Low product balance alarm and rollback.

[0040] Furthermore, the approach speed for fine grinding is V5, and the approach speed for smooth grinding is V6. <V5<V4。

[0041] By setting up a power detection probe, the contact point between the grinding stone and the workpiece is determined by detecting the motor's power value. This helps to assess whether the grinding stone will cause product defects and issues timely alarms. On the one hand, this allows the grinding stone to approach the workpiece at a higher speed and triggers an alarm and retraction when the grinding stone is damaged, improving production efficiency. On the other hand, it ensures the quality of the workpiece and prevents the production of defective products.

[0042] The grinding trajectory is divided into a rapid grinding section, a semi-rapid grinding section, a buffer grinding section, and a coarse grinding section, thereby effectively reducing the contact time between the grinding stone and the workpiece to be ground, and immediately switching to the approach speed of the coarse grinding section upon contact, effectively ensuring the accuracy of the product.

[0043] By using variable speed V3 as the approach speed as a buffer zone, the contact speed is increased without causing damage to the workpiece and grinding stone.

[0044] This application is effectively compatible with existing grinding machines and is applicable to the modification of existing grinding machines.

[0045] While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations can be appropriately omitted, substituted, or added to various processes or components. For example, in alternative configurations, methods can be performed in a different order than those described, and / or various components can be added, omitted, and / or combined. Moreover, features described with respect to certain configurations can be combined in various other configurations, such as different aspects and elements of the configuration can be combined in a similar manner. Furthermore, the elements therein can be updated as the technology develops; that is, many elements are examples and do not limit the scope of this disclosure or the claims.

[0046] Specific details are provided in the specification to offer a thorough understanding of exemplary configurations, including implementations. However, configurations can be practiced without these specific details; for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail to avoid obscuring the configuration. This description provides only exemplary configurations and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes can be made to the function and arrangement of the elements without departing from the spirit or scope of this disclosure.

[0047] In summary, the above detailed description is intended to be illustrative rather than restrictive, and it should be understood that these embodiments are for illustrative purposes only and not for limiting the scope of protection of the invention. After reading the description of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent changes and modifications also fall within the scope defined by the claims of this invention.

Claims

1. A method for operating a grinding controller, characterized in that, The grinding controller includes a control unit and a power detection probe. The control unit is connected to the grinding machine control system for data communication. The grinding machine control system drives the grinding stone to rotate through a motor and controls the grinding stone to move towards the workpiece to be ground at a certain speed. The power detection probe detects the power value of the motor and transmits it to the control unit. The control unit judges based on the received signal and forms signals for controlling the approaching speed of the grinding stone and the grinding process. The working method includes the following steps: A. Set the grinding trajectory through the grinding machine control system, and separately set the rapid section, the quasi-rapid section AB, the buffer section BC, and the rough grinding section CD. B. The grinding machine control system drives the grinding stone to rotate through a motor and approaches the workpiece to be ground at a speed of V1. When the grinding stone moves to the grinding trajectory point A, the power change value of the motor is detected by the power detection probe. C. Judge whether the grinding stone collides with the workpiece to be ground during the movement to point A based on the power change value of the probe GE. If it collides with the workpiece to be ground, go to step D; otherwise, go to step E. D. Alarm for a large amount of remaining material on the product and notify the operator for handling and perform a retreat. E. Control the grinding stone to approach the workpiece to be ground at a speed of V2. When the grinding stone moves to the grinding trajectory point B, detect the power change value of the motor in the quasi-rapid section AB through the probe GE, and judge whether the grinding stone contacts the workpiece to be ground in the quasi-rapid section (V2 < V1). If it contacts the workpiece to be ground, go to step F; otherwise, go to step G. F. Control the grinding stone to approach the workpiece to be ground at a speed of V4, perform rough grinding on the workpiece to be ground, and then perform fine grinding and finish grinding, where V4 < V2. G. Adjust the grinding stone to approach the workpiece to be ground at a buffering speed of V3 to the grinding trajectory point C, and judge whether the grinding stone contacts the workpiece to be ground in the buffer section BC based on the power change value of the probe GE. If it contacts, go to step F; otherwise, go to step H, where V4 < V3 < V2. H. Adjust the grinding stone to approach the workpiece to be ground at a rough grinding speed of V4 to the grinding trajectory point D, and judge whether the grinding stone contacts the workpiece to be ground in the rough grinding section from C to D based on the power change value of the probe GE. If it contacts, go to step F; otherwise, go to step I. I. Alarm for a small amount of remaining material on the product and perform a retreat. V1 > V0, V2 < V0, where V0 is the critical approaching speed at which the material to be ground can definitely cause damage to the grinding stone.

2. The working method of the grinding controller according to claim 1, characterized in that, The speed V3 is a variable speed.

3. The working method of the grinding controller according to claim 1, characterized in that, The approaching speed for fine grinding is V5, and the approaching speed for finish grinding is V6, where V6 < V5 < V4.

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