CN115070508B - Adjusting and monitoring method for buffer type sizing baffle - Google Patents
Adjusting and monitoring method for buffer type sizing baffle Download PDFInfo
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- CN115070508B CN115070508B CN202210768257.6A CN202210768257A CN115070508B CN 115070508 B CN115070508 B CN 115070508B CN 202210768257 A CN202210768257 A CN 202210768257A CN 115070508 B CN115070508 B CN 115070508B
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- spring
- impact force
- movable baffle
- impact
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012544 monitoring process Methods 0.000 title claims abstract description 8
- 238000004513 sizing Methods 0.000 title abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000010008 shearing Methods 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000013072 incoming material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The invention discloses a method for adjusting and monitoring a buffer type fixed-length baffle, which comprises the steps of arranging a displacement sensor, an impact force sensor and a counter on a movable baffle, obtaining the theoretical maximum impact force born by the movable baffle according to the acting time of the impact force born by the movable baffle and combining wire rod and roller way speed data on a wire rod production line, selecting an applicable spring and pre-compression amount according to the theoretical maximum impact force, and enabling the displacement amount of the movable baffle to be zero if the displacement amount of the movable baffle is not zero in an non-impact state; according to the impact force data received by the movable baffle, the theoretical number of fatigue failure of the spring under the action of the cyclic variable load is obtained by combining the spring data, and then the impact number data received by the spring is compared to monitor the failure condition of the spring. The method can monitor the running state of the spring on line in real time, can rapidly and accurately adjust the compression amount, can monitor the failure condition of the spring and remind replacement, and avoids the productivity loss caused by the failure of the buffer type sizing baffle.
Description
Technical Field
The invention belongs to the field of wire and bar production lines, and particularly relates to an adjusting and monitoring method of a buffer type fixed-length baffle.
Background
In the production of the deformed steel bar and the like, the fixed-length shearing is generally performed by adopting cold shearing, and common cold shearing comprises flying shearing (pendulum shearing) and cold stop shearing, wherein the shearing precision of the flying shearing can not meet the requirements of special users, and the cold stop shearing can complete the fixed-length shearing through matching with a fixed-length baffle, so that the precision is relatively high. Along with the improvement of the production rolling speed of the wire rod production line, under the condition that cooling bed equipment cannot be modified, the productivity of the production line is restricted by the fixed-length shearing efficiency, and besides the shearing capacity of the fixed-length shearing efficiency, the impact resistance of the fixed-length baffle plate and the tolerance to high-strength variable load are key factors.
The buffer type fixed-length baffle comprises a movable baffle used for bearing impact force and a spring buffer mechanism used for providing elastic buffer for the movable baffle, and the prior buffer type fixed-length baffle can improve the shock resistance and the tolerance to high-strength variable load to a certain extent, but still has the following problems: 1) The spring buffer mechanism has no adjusting function or adjusts the compression amount of the spring through a lock nut (such as the rod fixed-length pneumatic baffle device and the fixed-length shearing system thereof disclosed in patent CN 202122134558.7), the adjustment amount is determined through repeated experiments in the adjusting process, and the adjustment time is long and the workload is large because the adjustment tool is required to repeatedly measure; 2) After the spring buffer mechanism is used for a long time, the spring is easy to deform and lose efficacy, so that the sizing precision is affected.
Disclosure of Invention
The invention aims to provide an adjustment monitoring method for a buffer type sizing baffle, which can monitor the running state of a spring on line in real time, can rapidly and accurately adjust the compression amount, can monitor the failure condition of the spring and remind replacement, and avoids productivity loss caused by the failure of the buffer type sizing baffle.
The technical scheme adopted by the invention is as follows:
a method for adjusting and monitoring a buffer type fixed-length baffle plate includes the steps that a displacement sensor, an impact force sensor and a counter are arranged on a movable baffle plate, a reference scale for adjusting the compression amount of a spring is arranged on a spring buffer mechanism, and data of the displacement amount of the movable baffle plate, the impact force received by the movable baffle plate and the impact times received by the spring are acquired by the displacement sensor, the impact force sensor and the counter respectively through a data acquisition system and are uploaded to a data processing system; the data processing system obtains theoretical maximum impact force born by the movable baffle according to the acting time of the impact force born by the movable baffle and by combining the wire rod and roller way speed data on the wire rod production line, selects a suitable spring and pre-compression amount according to the theoretical maximum impact force, and rapidly adjusts the compression amount of the spring by utilizing a reference scale if the displacement amount of the movable baffle is not zero in an non-impact state so as to enable the displacement amount to be zero; the data processing system obtains the theoretical number of times of fatigue failure of the spring under the action of the cyclic variable load according to the impact force data received by the movable baffle and the spring data, compares the impact number data received by the spring, monitors the failure condition of the spring, and alarms and reminds of replacing the spring before failure.
Further, the calculation formula of the impact force born by the movable baffle is F=MV/T, wherein M is the mass of the wire rod on the wire rod production line, V is the roller speed, and T is the acting time of the impact force born by the movable baffle; and comparing impact forces F of various wire bars at different roller speeds, and selecting proper safety redundancy to obtain a theoretical maximum impact force.
Further, the spring has the following components under the action of cyclic variable load
wherein , and />Respectively maximum shear stress and minimum shear stress, gamma is the shear stress ratio, K is the curvature coefficient, < + >> and />The maximum impact force and the minimum impact force measured by the impact force sensor are respectively measured, D is the diameter of the spring, and D is the diameter of the spring;
according to the obtainedAnd gamma, the theoretical number of times N of fatigue failure of the spring under the action of cyclic variable load is obtained by combining the empirical parameters of the fatigue life of the spring.
Further, the number of times of impact on the spring is N, and when the theoretical number of times of fatigue failure of the spring under the action of cyclic variable load is N, N is more than 0.9N, the alarm reminds of replacing the spring.
The beneficial effects of the invention are as follows:
the method can monitor the running state of the spring on line in real time, can rapidly and accurately adjust the compression amount, can monitor the failure condition of the spring and remind replacement, and avoids the productivity loss caused by the failure of the buffer type sizing baffle.
Detailed Description
The invention is further illustrated below with reference to examples.
A method for adjusting and monitoring a buffer type fixed-length baffle plate includes the steps that a displacement sensor, an impact force sensor and a counter are arranged on a movable baffle plate, a reference scale for adjusting the compression amount of a spring is arranged on a spring buffer mechanism, and data of the displacement amount of the movable baffle plate, the impact force received by the movable baffle plate and the impact times received by the spring are acquired by the displacement sensor, the impact force sensor and the counter respectively through a data acquisition system and are uploaded to a data processing system; the data processing system obtains theoretical maximum impact force born by the movable baffle according to the acting time of the impact force born by the movable baffle and by combining the wire rod and roller way speed data on the wire rod production line, selects a suitable spring and pre-compression amount according to the theoretical maximum impact force, and rapidly adjusts the compression amount of the spring by utilizing a reference scale if the displacement amount of the movable baffle is not zero in an non-impact state so as to enable the displacement amount to be zero; the data processing system obtains the theoretical number of times of fatigue failure of the spring under the action of the cyclic variable load according to the impact force data received by the movable baffle and the spring data, compares the impact number data received by the spring, monitors the failure condition of the spring, and alarms and reminds of replacing the spring before failure.
In the embodiment, the calculation formula of the impact force born by the movable baffle is f=mv/T, wherein M is the mass of the wire rod on the wire rod production line, V is the roller speed, and T is the acting time of the impact force born by the movable baffle; and comparing impact forces F of various wire bars at different roller speeds, and selecting proper safety redundancy to obtain a theoretical maximum impact force.
Take a deformed steel bar production line as an example:
| sequence number | Product specification (Unit, mm) | Number of single shearing roots | Length of incoming material multiple length (single)Bit, m) | One set of incoming material weights (singleBit, t) | V=1.5m/s， T≈0.08 s Impact load/kN at the time of impact | V=1m/s,T≈ 0.1 s Impact load/kN at the time of impact | V =0.5m/s,T≈ 0.12 s time, impact load/kN |
| 1 | 12 | 110 | 84 | 8.20 | 153.74 | 81.99 | 34.16 |
| 2 | 20 | 47 | 84 | 9.73 | 182.46 | 97.31 | 40.55 |
| 3 | 22 | 39 | 84 | 9.77 | 183.20 | 97.71 | 40.71 |
And selecting proper safety redundancy to obtain a theoretical maximum impact force of 400KN, and selecting an applicable spring according to a mechanical manual.
The possible failure modes of the spring include static strength failure, fatigue strength failure, vibration failure and stability failure, and in the production of deformed steel bars, the spring is generally subjected to high-strength cyclic variable load due to the fast production rhythm, and the possibility of fatigue strength failure of the spring selected to be adopted based on the working condition is maximum. In this embodiment, the spring is under cyclic variable load
wherein , and />Respectively maximum shear stress and minimum shear stress, gamma is the shear stress ratio, K is the curvature coefficient, < + >> and />The maximum impact force and the minimum impact force measured by the impact force sensor are respectively measured, D is the diameter of the spring, and D is the diameter of the spring;
according to the obtainedAnd gamma, the theoretical number of times N of fatigue failure of the spring under the action of cyclic variable load is obtained by combining the empirical parameters of the fatigue life of the spring.
In the embodiment, the number of times of impact on the spring is N, and when the theoretical number of times of fatigue failure of the spring under the action of cyclic variable load is N, N is more than 0.9N, the alarm reminds of replacing the spring.
The method can monitor the running state of the spring on line in real time, can rapidly and accurately adjust the compression amount, can monitor the failure condition of the spring and remind replacement, and avoids the productivity loss caused by the failure of the buffer type sizing baffle.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (1)
1. The utility model provides a adjustment monitoring method of buffering formula scale baffle which characterized in that: a displacement sensor, an impact force sensor and a counter are arranged on the movable baffle, a reference scale for adjusting the compression amount of the spring is arranged on the spring buffer mechanism, and the displacement amount of the movable baffle, the impact force received by the movable baffle and the impact frequency data received by the spring and respectively acquired by the displacement sensor, the impact force sensor and the counter are acquired by a data acquisition system and are uploaded to a data processing system; the data processing system obtains theoretical maximum impact force born by the movable baffle according to the acting time of the impact force born by the movable baffle and by combining the wire rod and roller way speed data on the wire rod production line, selects a suitable spring and pre-compression amount according to the theoretical maximum impact force, and rapidly adjusts the compression amount of the spring by utilizing a reference scale if the displacement amount of the movable baffle is not zero in an non-impact state so as to enable the displacement amount to be zero; the data processing system obtains the theoretical number of fatigue failure of the spring under the action of the cyclic variable load according to the impact force data received by the movable baffle and the spring data, compares the impact number data received by the spring, monitors the failure condition of the spring, and alarms and reminds the replacement of the spring before failure;
the calculation formula of the impact force born by the movable baffle is F=MV/T, wherein M is the mass of the wire rod on the wire rod production line, V is the roller speed, and T is the acting time of the impact force born by the movable baffle; comparing impact forces F of various wire bars at different roller speeds, and selecting proper safety redundancy to obtain a theoretical maximum impact force;
the spring is under the action of cyclic variable load
wherein , and />Respectively the maximum shear stress and the minimum shear stress, gamma is the shear stress ratio, K is the curvature coefficient, and />The maximum impact force and the minimum impact force measured by the impact force sensor are respectively measured, D is the diameter of the spring, and D is the diameter of the spring;
according to the obtainedAnd gamma, the theoretical number of times N of fatigue failure of the spring under the action of cyclic variable load, which is obtained by combining with the empirical parameters of the fatigue life of the spring;
the number of times of impact on the spring is N, and when the theoretical number of times of fatigue failure of the spring under the action of cyclic variable load is N, N is more than 0.9N, the spring is warned to remind the replacement of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210768257.6A CN115070508B (en) | 2022-06-30 | 2022-06-30 | Adjusting and monitoring method for buffer type sizing baffle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210768257.6A CN115070508B (en) | 2022-06-30 | 2022-06-30 | Adjusting and monitoring method for buffer type sizing baffle |
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| Publication Number | Publication Date |
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| CN115070508A CN115070508A (en) | 2022-09-20 |
| CN115070508B true CN115070508B (en) | 2023-10-03 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4444061A (en) * | 1982-03-26 | 1984-04-24 | Camtech Inc. | Force and torque sensor for machine tools |
| DE4218799A1 (en) * | 1992-06-06 | 1993-12-16 | Brandmeier Thomas Dr | Monitoring cutting edge wear in NC machine tool - using sensor to observe cutting operation and analysing signal spectrum in dependence on frequency changes and overall pattern |
| CN102528560A (en) * | 2011-12-22 | 2012-07-04 | 西安交通大学 | Method for measuring static pre-tightening force of main shaft bearing of machine tool |
| JP2014014882A (en) * | 2012-07-06 | 2014-01-30 | Jtekt Corp | Dynamic characteristic calculation device and method of machine tool |
| CN204769898U (en) * | 2015-07-17 | 2015-11-18 | 河北钢铁股份有限公司邯郸分公司 | Modified scale cushioning fender device |
| CN109238618A (en) * | 2018-10-10 | 2019-01-18 | 中南大学 | A kind of cutter impact property test device |
| CN215615483U (en) * | 2021-09-06 | 2022-01-25 | 中冶南方武汉钢铁设计研究院有限公司 | Bar fixed-length pneumatic baffle device and fixed-length shearing system thereof |
| CN114260507A (en) * | 2022-01-05 | 2022-04-01 | 山东钢铁股份有限公司 | Sizing device and bar cutting equipment |
-
2022
- 2022-06-30 CN CN202210768257.6A patent/CN115070508B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4444061A (en) * | 1982-03-26 | 1984-04-24 | Camtech Inc. | Force and torque sensor for machine tools |
| DE4218799A1 (en) * | 1992-06-06 | 1993-12-16 | Brandmeier Thomas Dr | Monitoring cutting edge wear in NC machine tool - using sensor to observe cutting operation and analysing signal spectrum in dependence on frequency changes and overall pattern |
| CN102528560A (en) * | 2011-12-22 | 2012-07-04 | 西安交通大学 | Method for measuring static pre-tightening force of main shaft bearing of machine tool |
| JP2014014882A (en) * | 2012-07-06 | 2014-01-30 | Jtekt Corp | Dynamic characteristic calculation device and method of machine tool |
| CN204769898U (en) * | 2015-07-17 | 2015-11-18 | 河北钢铁股份有限公司邯郸分公司 | Modified scale cushioning fender device |
| CN109238618A (en) * | 2018-10-10 | 2019-01-18 | 中南大学 | A kind of cutter impact property test device |
| CN215615483U (en) * | 2021-09-06 | 2022-01-25 | 中冶南方武汉钢铁设计研究院有限公司 | Bar fixed-length pneumatic baffle device and fixed-length shearing system thereof |
| CN114260507A (en) * | 2022-01-05 | 2022-04-01 | 山东钢铁股份有限公司 | Sizing device and bar cutting equipment |
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| CN115070508A (en) | 2022-09-20 |
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