CN218798190U - Servo cold rolling pipe owner measuring shaft encoder fault detection control system - Google Patents
Servo cold rolling pipe owner measuring shaft encoder fault detection control system Download PDFInfo
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- CN218798190U CN218798190U CN202223025548.0U CN202223025548U CN218798190U CN 218798190 U CN218798190 U CN 218798190U CN 202223025548 U CN202223025548 U CN 202223025548U CN 218798190 U CN218798190 U CN 218798190U
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Abstract
The utility model provides a servo cold rolling pipe owner's measuring shaft encoder fault detection control system; the method comprises the following steps: the device comprises an encoder (1), a cold pilger mill main motor (2), a small belt pulley (3), a large belt pulley (4), a main machine small gear (5), a main machine large eccentric gear (6), a coupler (7), a main measuring shaft encoder (8), a connecting rod (9), a rolling machine head (10), a digital speed regulating device and a PLC. The utility model provides a main measuring shaft encoder fault detection system of a servo cold pilger mill, which has the characteristics of simple structure, perfect functions, high reliability of a control system and capability of meeting the requirements of safe production; will the utility model relates to a system is arranged in servo cold pilger mill, can in time discover servo cold pilger mill's production accident to reach the purpose that improves the tool and die life-span, reduces waste product, useless rate.
Description
Technical Field
The utility model relates to a servo cold pilger mill field specifically relates to a servo cold pilger mill owner measuring shaft encoder fault detection control system.
Background
Along with the improvement of the precision of rolling tools of the servo cold pilger mill, the servo cold pilger mill also develops towards the continuous high-speed rolling direction, the automation degree of equipment is higher and higher, and meanwhile, the detection alarm program also needs to be comprehensively perfected. The core signal sending mechanism of the servo cold pilger mill is a main measuring shaft encoder, and a main frame position signal is sent through the encoder, so that a rotary servo motor and a feeding servo motor are controlled to complete corresponding rotary and feeding actions. If the encoder breaks down (such as breakage of the encoder and a main coupler, slipping of the coupler, error in speed ratio and the like), signals of the encoder of the main measuring shaft are wrong, movement of the rotary feeding servo motor is disordered, long-time rotary feeding action is inaccurate, and abrasion of a mechanical mechanism is accelerated. The abrasion of the rolling pass can be caused, and the subsequent production can also cause the product not to reach the standard due to the damage of the tool and the die. The damage of mechanical equipment and tools and dies can greatly influence the production efficiency, and meanwhile, the product quality is also greatly influenced. Therefore, a method for detecting the failure of the main measuring shaft encoder is needed, so that the occurrence of the above phenomenon is reduced, the productivity is improved, and the cost is reduced.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a servo cold rolling pipe owner measuring shaft encoder fault detection control system.
The technical scheme of the utility model as follows:
the utility model relates to a servo cold rolling pipe owner measuring shaft encoder fault detection control system, include: the device comprises an encoder 1, a cold pilger mill main motor 2, a small belt pulley 3, a large belt pulley 4, a main machine pinion 5, a main machine large eccentric gear 6, a coupler 7, a main measuring shaft encoder 8, a connecting rod 9, a rolling machine head 10, a digital speed regulating device and a PLC;
the encoder 1 is arranged on a main motor 2 of the cold pilger mill;
the main motor 2 of the cold pilger mill is connected with a digital speed regulating device, and the digital speed regulating device is connected with the PLC through a communication network;
the digital speed regulating device is used for controlling and reading the speed of the main motor 2 of the cold pilger mill in real time through the encoder 1 and transmitting the speed to the PLC;
the main measuring shaft encoder 8 is arranged at the side end of a bull gear of the eccentric gear box, and the main measuring shaft encoder 8 is connected with the bull gear of the eccentric gear box through a coupler 7; the main measuring shaft encoder 8 sends a signal to the servo driver, and the rotary and feed servo motor realizes the corresponding rotary feed function through the signal of the main measuring shaft encoder 8.
Preferably, the main measuring shaft encoder 8 is connected with the digital servo driver through a cable; and the digital servo driver is connected with the PLC through a communication network.
Preferably, the PLC is used to detect and signal a failure of the main measuring shaft encoder 8.
Preferably, the main motor 2 of the cold pilger mill is connected with the small belt pulley 3 through a coupling 7, and the small belt pulley 3 is linked with the large belt pulley 4 through a belt.
Preferably, the large belt pulley 4 drives the main machine small gear 5 to operate, so as to drive the main machine large eccentric gear 6 to move, and the large eccentric gear 6 drives the rolling machine head 10 on the main machine frame to reciprocate through the connecting rod 9 for rolling; when the main machine large eccentric gear 6 rotates for one circle, the main machine frame finishes one rolling action. Therefore, the rolling times of the main machine can be calculated according to the rotating speed of the main machine.
Preferably, the main measuring shaft encoder 8 is connected to the center of the large eccentric gear box 6 through a coupling 7. The main frame is exactly used for completing one-time rolling when the large eccentric gear 6 rotates for a circle, the main measuring shaft encoder 8 is arranged at the position and can reflect the rolling condition of the main frame in real time, the main measuring shaft encoder comprises the rolling speed and the position of the main frame, the rotating speed and the position signal of the main measuring shaft are sent to the main PLC in real time, the main PLC sends the rotating speed and the position signal to the servo motor for rotating and feeding, and corresponding rotating and feeding actions are completed.
The utility model discloses still relate to aforementioned servo cold rolling pipe owner measuring shaft encoder fault detection control system's detection method, including following step:
the encoder 1 reads the rotating speed n (revolutions per minute) of the main motor 2 of the pipe mill, and the first-stage speed ratio i is between the small belt pulley 3 and the large belt pulley 4 of the pipe mill 1 The speed ratio between the main engine pinion 5 and the main engine large eccentric gear 6 is i 2 Calculating the actual rolling frequency of the main frame of the pipe mill to be m (times/minute) according to the formula (1), wherein the formula (1) shows that:
m＝n/(i 1 *i 2 ) (1)
the main measuring shaft encoder 8 is arranged on the large gear side of the eccentric gear box, and can feed back the actual rolling times y (times/minute) of the main frame in real time.
The utility model relates to a PLC in the system can read encoder 1's rotational speed n and main measuring shaft encoder 8's rotational speed y through communication network, calculates theoretical rolling number of times m through formula (1). And (4) performing comparison processing in the PLC, and if the difference between the theoretical calculated value m and the actual rolling times y is large, judging that the main measuring shaft has a fault. When m > y is long, there is a possibility that the main measuring shaft encoder 8 and the coupling 7 mounted on the large gear side of the eccentric gear box are broken or loosened. When m < y is long, the state may be that the speed ratio value is wrong, i.e. i 1 And i 2 Numerical errors, and possibly signal errors of the encoder itself. The relation between m and y can further judge the specific problem of the main measuring shaft encoder.
For the existing servo cold pilger mill, the large eccentric gear 6 of the main machine can reflect the rolling speed and the corresponding rolling position of the cold pilger mill in real time, and the large gear rotates for one circle, which is exactly one stroke for rolling the main rolling machine 10.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a main measuring shaft encoder fault detection system of a servo cold pilger mill, which has the characteristics of simple structure, perfect functions, high reliability of a control system and capability of meeting the requirements of safe production; will the utility model relates to a system is arranged in servo cold pilger mill, can in time discover servo cold pilger mill's production accident to reach the purpose that improves the tool and die life-span, reduces waste product, useless rate.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a front view of the overall transmission structure of the pipe mill of the present invention;
fig. 2 is a top view of the overall transmission structure of the main unit of the pipe mill according to the present invention;
reference numerals: the device comprises an encoder 1, a main motor 2 of the pipe mill, a small belt pulley 3, a large belt pulley 4, a main machine pinion 5, a main machine large eccentric gear 6, a coupler 7, a main measuring shaft encoder 8, a connecting rod 9 and a rolling machine head 10.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Examples
The embodiment relates to a servo cold rolling pipe main measuring shaft encoder fault detection control system, which is shown in a figure 1 and a figure 2: the method comprises the following steps: the device comprises an encoder 1, a cold pilger mill main motor 2, a small belt pulley 3, a large belt pulley 4, a main machine pinion 5, a main machine large eccentric gear 6, a coupler 7, a main measuring shaft encoder 8, a connecting rod 9, a rolling machine head 10, a digital speed regulating device and a PLC;
the encoder 1 is arranged on a main motor 2 of the cold pilger mill;
the main motor 2 of the cold pilger mill is connected with a digital speed regulating device, and the digital speed regulating device is connected with the PLC through a communication network;
the digital speed regulating device is used for controlling and reading the speed of the main motor 2 of the cold pilger mill in real time through the encoder 1 and transmitting the speed to the PLC;
the main measuring shaft encoder 8 is arranged at the side end of a bull gear of the eccentric gear box, and the main measuring shaft encoder 8 is connected with the bull gear of the eccentric gear box through a coupler 7; the main measuring shaft encoder 8 sends a signal to the servo driver, and the rotary and feed servo motor realizes the corresponding rotary feed function through the signal of the main measuring shaft encoder 8.
Further, the main measuring shaft encoder 8 is connected with a digital servo driver through a cable; and the digital servo driver is connected with the PLC through a communication network.
Further, the PLC is used to detect and signal a failure of the main measuring shaft encoder 8.
Further, the main motor 2 of the cold pilger mill is connected with the small belt pulley 3 through a coupler 7, and the small belt pulley 3 is linked with the large belt pulley 4 through a belt.
Further, the large belt pulley 4 drives the main machine pinion 5 to operate, so as to drive the main machine large eccentric gear 6 to move, and the large eccentric gear 6 drives the rolling machine head 10 on the main machine frame to reciprocate through the connecting rod 9 for rolling; the main frame finishes one rolling action when the main frame large eccentric gear 6 rotates for one circle. Therefore, the rolling times of the main machine can be calculated according to the rotating speed of the main machine.
Further, the main measuring shaft encoder 8 is connected with the center of the large eccentric gear 6 through a coupling 7. The main frame finishes one-time rolling when the large eccentric gear 6 rotates for a circle, a main measuring shaft encoder 8 is arranged at the position and can reflect the rolling condition of the main frame in real time, the rolling speed and the position of the main frame are included, the rotating speed and the position signal of the main measuring shaft are sent to the main PLC in real time, and the main PLC sends the rotating speed and the position signal to the rotating and feeding servo motor to finish corresponding rotating and feeding actions.
The embodiment also relates to a detection method of the servo cold-rolling pipe main measuring shaft encoder fault detection control system, which comprises the following steps:
an encoder 1 reads the rotating speed n (revolutions per minute) of a main motor 2 of the pipe mill, and a primary speed ratio i is set between a small belt pulley 3 and a large belt pulley 4 of the pipe mill 1 The speed ratio between the main engine pinion 5 and the main engine large eccentric gear 6 is i 2 Calculating the actual rolling frequency of the main frame of the pipe mill to be m (times/minute) according to the formula (1), wherein the formula (1) shows that:
m＝n/(i 1 *i 2 ) (1)
the main measuring shaft encoder 8 is arranged on the large gear side of the eccentric gear box, and can feed back the actual rolling times y (times/minute) of the main frame in real time.
The utility model relates to a PLC in the system can read encoder 1's rotational speed n and main measuring shaft encoder 8's rotational speed y through communication network, calculates theoretical rolling number of times m through formula (1). And (4) carrying out comparison processing in the PLC, and if the difference between the theoretical calculation value m and the actual rolling frequency y is large, judging that the main measuring shaft has a fault. When m > y is long, there is a possibility that the main measuring shaft encoder 8 and the coupling 7 mounted on the large gear side of the eccentric gear box are broken or loosened. When m < y is long, the state may be that the speed ratio value itself is wrong, i.e. i 1 And i 2 Numerical errors, and possibly signal errors of the encoder itself. The relation between m and y can further judge the specific problem of the main measuring shaft encoder.
For the existing servo cold pilger mill, the large eccentric gear 6 of the main machine can reflect the rolling speed and the corresponding rolling position of the cold pilger mill in real time, and the large gear rotates for one circle, which is exactly one rolling stroke of the main rolling machine 10.
The utility model discloses with the prior art contrast, servo cold pilger mill's main measurement axle encoder trouble can not in time discover in the past, sends error signal behind the main measurement axle encoder signal trouble and leads to gyration feed mechanism action disorder, leads to mechanical equipment and worker's mould to all receive the harm, and also to a great extent has influenced product quality. After the detection system and the detection method are put into use, the main measuring shaft encoder fault can be detected in time and stopped in time, so that production accidents are avoided as much as possible.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. The utility model provides a servo cold rolling pipe owner measuring shaft encoder fault detection control system which characterized in that includes: the device comprises an encoder (1), a main motor (2) of the cold pilger mill, a small belt pulley (3), a large belt pulley (4), a main machine small gear (5), a main machine large eccentric gear (6), a coupler (7), a main measuring shaft encoder (8), a connecting rod (9), a rolling machine head (10), a digital speed regulating device and a PLC (programmable logic controller);
the encoder (1) is arranged on a main motor (2) of the cold pilger mill;
the main motor (2) of the cold pilger mill is connected with a digital speed regulating device, and the digital speed regulating device is connected with the PLC through a communication network;
the digital speed regulating device is used for controlling and reading the speed of the main motor (2) of the cold pilger mill in real time through the encoder (1) and transmitting the speed to the PLC;
a main measuring shaft encoder (8) is arranged at the side end of a large gear of the eccentric gear box, and the main measuring shaft encoder (8) is connected with the large gear of the eccentric gear box through a coupling (7); the main measuring shaft encoder (8) sends a signal to the servo driver, and the rotary and feed servo motor realizes the corresponding rotary feed function through the signal of the main measuring shaft encoder (8).
2. The servo cold-rolling mill main measuring shaft encoder fault detection control system of claim 1, characterized in that the main measuring shaft encoder (8) is connected with a digital servo driver through a cable; and the digital servo driver is connected with the PLC through a communication network.
3. The servo cold-rolling mill main measuring shaft encoder fault detection control system of claim 1, characterized in that the PLC is used to detect and signal a main measuring shaft encoder (8) fault.
4. The servo cold pilger mill main measuring shaft encoder fault detection control system of claim 1, characterized in that, cold pilger mill main motor (2) passes through shaft coupling (7) and connects little belt pulley (3), and little belt pulley (3) are in the linkage through the belt with big belt pulley (4).
5. The servo cold-rolling mill main measuring shaft encoder fault detection control system of claim 1, characterized in that the big belt pulley (4) drives the main engine pinion (5) to operate, drives the main engine big eccentric gear (6) to move, and the main engine big eccentric gear (6) drives the rolling head (10) on the main engine frame to reciprocate through the connecting rod (9) for rolling.
6. The servo cold rolling mill main measuring shaft encoder fault detection control system of claim 1, characterized in that the main measuring shaft encoder (8) is connected with the center of the main machine large eccentric gear (6) through a coupler (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223025548.0U CN218798190U (en) | 2022-11-15 | 2022-11-15 | Servo cold rolling pipe owner measuring shaft encoder fault detection control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223025548.0U CN218798190U (en) | 2022-11-15 | 2022-11-15 | Servo cold rolling pipe owner measuring shaft encoder fault detection control system |
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| Publication Number | Publication Date |
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| CN218798190U true CN218798190U (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223025548.0U Active CN218798190U (en) | 2022-11-15 | 2022-11-15 | Servo cold rolling pipe owner measuring shaft encoder fault detection control system |
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| CN (1) | CN218798190U (en) |
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- 2022-11-15 CN CN202223025548.0U patent/CN218798190U/en active Active
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