CN113680851A - Sample straightener for testing mechanical properties of wire rod and method thereof - Google Patents
Sample straightener for testing mechanical properties of wire rod and method thereof Download PDFInfo
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- CN113680851A CN113680851A CN202110825959.9A CN202110825959A CN113680851A CN 113680851 A CN113680851 A CN 113680851A CN 202110825959 A CN202110825959 A CN 202110825959A CN 113680851 A CN113680851 A CN 113680851A
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 41
- 238000005452 bending Methods 0.000 claims description 15
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a sample straightener for testing the mechanical properties of wire rods and a method thereof, belonging to the technical field of test analysis in the metallurgical industry. The technical scheme is as follows: comprises a vertical straightening mechanism (34) and a horizontal straightening mechanism (33) which are sequentially arranged according to the running direction of a sample; the vertical straightening mechanism (34) comprises a nip roller, a vertical straightening roller and a guide roller, and the horizontal straightening mechanism (33) comprises a plurality of pairs of vertically arranged straightening rollers which are sequentially arranged according to the running direction of a sample; an upper nip roll (35), a lower nip roll (36), an upper guide roll (39), a lower guide roll (40), an upper straightening roll (37) and a lower straightening roll (38) in the vertical straightening mechanism (34) and straightening rolls in the transverse straightening mechanism (33) are all provided with V-shaped hole patterns matched with the samples. The invention has the beneficial effects that: by horizontally and vertically straightening the sample, the sample is straightened, and the working efficiency is improved.
Description
Technical Field
The invention relates to a sample straightener for testing the mechanical properties of wire rods and a method thereof, belonging to the technical field of test analysis in the metallurgical industry.
Background
High speed wire rods typically require mechanical testing including drawing, cold heading, etc. after being taken off-line. Because the wire rod is delivered in a coiled state, a test sample taken from the site has a certain radian, and the test sample must be straightened before mechanical detection, so that the accuracy of detection data can be ensured.
At present, the straightening method of the sample mainly adopts two major types of manual straightening and hydraulic straightening. Because the strength of the wire rod is high, the elasticity is good, the plastic deformation is difficult to occur, the straightening difficulty is large, the efficiency is low, the labor intensity of personnel is increased, the key is that the pre-bending cannot be counteracted through the reverse bending, the defect that the straightening cannot be performed forever is caused, the straightness of the straightened sample is poor, the mechanical damage to the surface of the wire rod is easy to cause, and the accuracy of the detection result is influenced; the hydraulic straightening adopts the principle of three-point bending for straightening, the control of the reverse bending rate is totally empirical, sometimes, the more the sample is straightened, the more the bending is serious, and only one-way straightening can be realized, and once the sample rotates in the straightening process, the sample can not be straightened basically.
Disclosure of Invention
The invention aims to provide a sample straightener for testing the mechanical property of a wire rod and a method thereof, which straightens the sample by straightening the sample transversely and vertically, improves the working efficiency and solves the problems in the background technology.
The technical scheme of the invention is as follows:
a sample straightener for testing the mechanical properties of wire rods comprises a vertical straightening mechanism and a horizontal straightening mechanism which are sequentially arranged according to the running direction of a sample;
the vertical straightening mechanism comprises a nip roller, a vertical straightening roller and guide rollers which are sequentially arranged according to the running direction of a sample, wherein the nip roller comprises an upper nip roller and a lower nip roller which are arranged up and down, the guide rollers comprise an upper guide roller and a lower guide roller which are arranged up and down, the vertical straightening roller comprises a plurality of upper straightening rollers and a plurality of lower straightening rollers, the number of the upper straightening rollers is one less than that of the lower straightening rollers, the upper straightening rollers are positioned between two adjacent lower straightening rollers, the upper nip roller, the upper guide roller and the upper straightening rollers are all rollers capable of moving up and down, and the lower nip roller, the lower guide roller and the lower straightening rollers are all fixed rollers;
the transverse straightening mechanism comprises a plurality of pairs of vertically arranged straightening rollers which are sequentially arranged according to the running direction of the sample;
and the upper bite roll, the lower bite roll, the upper guide roll, the lower guide roll, the upper straightening roll and the lower straightening roll in the vertical straightening mechanism and the straightening roll in the transverse straightening mechanism are all provided with V-shaped hole patterns matched with the sample.
And a lower nip roll, a lower straightening roll and a lower guide roll in the vertical straightening mechanism and a straightening roll vertically arranged in the transverse straightening mechanism are connected with a driving motor through a gear transmission mechanism.
The vertical straightening mechanism is characterized in that the number of the upper straightening rollers is three, the number of the lower straightening rollers is four, and the three upper straightening rollers are respectively positioned between two adjacent lower straightening rollers.
The upper nip roll, the upper guide roll and the upper straightening roll in the vertical straightening mechanism are respectively provided with an up-and-down moving adjusting mechanism, the up-and-down moving adjusting mechanism of the upper nip roll comprises an adjusting bolt A, an adjusting bolt B, a positive internal thread adjusting gear, a main adjusting gear and a reverse internal thread adjusting gear, wherein the positive internal thread adjusting gear, the main adjusting gear and the reverse internal thread adjusting gear are horizontally arranged above the upper nip roll, the positive internal thread adjusting gear and the reverse internal thread adjusting gear are respectively engaged with the main adjusting gear, the positive internal thread adjusting gear and the reverse internal thread adjusting gear are respectively connected with bearing seats at two ends of the upper nip roll through the adjusting bolt B, the adjusting bolt A is connected with the main adjusting gear, the up-down movement adjusting mechanism of the upper guide roll and the upper straightening roll is the same as the up-down movement adjusting mechanism of the upper nip roll.
A straightening method for a test sample for testing the mechanical property of a wire rod is characterized in that the straightening machine for the test sample for testing the mechanical property of the wire rod is adopted, when in straightening, the radian of a bent wire rod test sample is upwards or downwards, the bent wire rod test sample enters a vertical straightening roller through a nip roller to be vertically straightened, and then enters a plurality of straightening rollers which are vertically arranged in a transverse straightening mechanism through a guide roller to be transversely straightened, so that the bent wire rod test sample is straightened.
In the straightening process, the distances between an upper nip roller and a lower nip roller and between an upper guide roller and a lower guide roller are respectively adjusted according to the specification of a sample, so that a proper roll gap is ensured; and adjusting the vertical distance between the upper straightening roll and the lower straightening roll according to the bending degree of the sample.
The invention has the beneficial effects that:
(1) the horizontal and vertical straightening can be synchronously carried out, and the working efficiency is improved;
(2) the V-shaped hole type belongs to a universal hole type, and the position of a movable roller can be adjusted when the specification of a sample is changed without changing the roller;
(3) the upper and lower positions of the movable roller simultaneously transmit the positive thread internal thread adjusting gear and the negative thread internal thread adjusting gear through the adjusting bolt and the main adjusting gear, so that the stable operation of the movable roller is realized;
(4) the main transmission system adopts a motor speed reducer to synchronously drive the transverse straightening system and the vertical straightening system through the bevel gear, so that the synchronous operation of the transverse straightening system and the vertical straightening system is realized;
(5) the movable straightening roller can be set with different reverse bending rates, each pass of reverse bending rate can be set independently, and the pre-bending rate is counteracted through multi-pass reverse bending straightening to realize straightening of the sample.
Drawings
FIG. 1 is a view showing a structure of a leveler;
FIG. 2 is a view showing the structure of the internal transmission of the leveler;
FIG. 3 is a schematic view of an up-and-down movement adjusting mechanism of the movable roller;
FIG. 4 is a view showing the structure of the main transmission system of the leveler;
FIG. 5 is a partial view of the main drive system of the straightener;
in the figure: 1. a sample; 2. a base; 3. vertically straightening and biting into the driven gear; 4. straightening a meshing gear vertically; 5. vertically straightening the driving gear; 6, vertically straightening a transmission gear at the first section; 7. a vertical straightening driving gear; 8. vertically straightening a transmission gear; 9. the tail end is vertically straightened with a transmission gear; 10. a roller bearing; 11. transversely straightening the engaged gear; 12. transversely straightening the driving gear; 13. straightening the transmission gear transversely at the tail end; 14. transversely straightening and guiding the driven shaft; 15. transversely straightening and guiding the driving shaft; 16. adjusting the bolt A; 17. vertically straightening and biting into the driven shaft; 18. vertically straightening and guiding the driving shaft; 19. a bearing positioning clamp spring; 20. a gear positioning key; 21. adjusting the bolt B; 22. a gear positioning bolt; 23. a right-handed internal thread adjusting gear; 24. a main adjustment gear; 25. adjusting gears with reversed internal threads; 26. a main drive shaft; 27. transversely straightening the helical gear of the main transmission shaft; 28. a coupling; 29. a motor reducer; 30. transversely straightening the main transmission shaft; 31. a main drive shaft helical gear; 32. a drive transmission gear shaft; 33. a transverse straightening mechanism; 34. a vertical straightening mechanism; 35. an upper nip roll; 36. a lower nip roll; 37. an upper straightening roll; 38. a lower straightening roll; 39. an upper guide roller; 40. and a lower guide roller.
Detailed Description
The invention is further illustrated by way of example in the following with reference to the accompanying drawings.
Referring to the attached drawings 1-5, a sample straightener for testing the mechanical property of a wire rod comprises a vertical straightening mechanism 34 and a horizontal straightening mechanism 33 which are sequentially arranged according to the running direction of the sample;
the vertical straightening mechanism 34 comprises a nip roller, a vertical straightening roller and guide rollers which are sequentially arranged according to the running direction of a sample, wherein the nip roller comprises an upper nip roller 35 and a lower nip roller 36 which are arranged up and down, the guide rollers comprise an upper guide roller 39 and a lower guide roller 40 which are arranged up and down, the vertical straightening roller comprises a plurality of upper straightening rollers 37 and a plurality of lower straightening rollers 38, the number of the upper straightening rollers 37 is one less than that of the lower straightening rollers 38, the upper straightening rollers 37 are positioned between two adjacent lower straightening rollers 38, the upper nip roller 35, the upper guide roller 39 and the upper straightening rollers 37 are all rollers capable of moving up and down, and the lower nip roller 36, the lower guide roller 40 and the lower straightening rollers 38 are all fixed rollers;
the transverse straightening mechanism 33 comprises a plurality of pairs of vertically arranged straightening rollers which are sequentially arranged in sequence according to the running direction of the sample;
the upper nip roll 35, the lower nip roll 36, the upper guide roll 39, the lower guide roll 40, the upper straightening roll 37 and the lower straightening roll 38 in the vertical straightening mechanism 34 and the straightening rolls in the transverse straightening mechanism 33 are all provided with V-shaped hole patterns matched with the samples.
In the present embodiment, as shown in FIG. 1, the structure of the leveler includes a sample 1, a base 2, a horizontal leveler mechanism 33, and a vertical leveler mechanism 34, and the vertical leveler mechanism 34 includes, for example, a movable upper bite roll 35, a fixed lower bite roll 36, three movable upper leveler rolls 37, four fixed lower leveler rolls 38, a movable upper guide roll 39, and a fixed lower guide roll 40. The upper bite roller 35 and the lower bite roller 36 bite the sample into the pinch to advance, the upper bite roller 35 is movable, the adjustment of the roll gap is realized by moving up and down, and the hole pattern is a V-shaped universal hole pattern and can meet the clamping requirements of samples with different specifications. The fixed lower straightening roll 38 and the movable upper straightening roll 37 are arranged in a three-point manner, and the adjustment of the reverse bending rate is realized by moving the position of the movable upper straightening roll 37 so as to offset the pre-bending rate.
As shown in fig. 2, the internal transmission structure diagram of the straightener includes a vertical straightening engaged driven gear, a vertical straightening engaged gear, a vertical straightening driving gear, a first vertical straightening transmission gear, a vertical straightening driving gear, a vertical straightening transmission gear, a last vertical straightening transmission gear and a roller bearing, and the horizontal straightening mechanism includes a horizontal straightening engaged gear, a horizontal straightening driving gear, a last horizontal straightening transmission gear, a horizontal straightening guide driven shaft, a horizontal straightening guide driving shaft and the like. The vertical straightening driving gear drives the vertical straightening transmission gear, the first section of vertical straightening transmission gear is driven by the vertical straightening driving gear, the vertical straightening transmission gear drives the vertical straightening driving gear and the last section of vertical straightening transmission gear, the first section of vertical straightening driving gear drives the first section of vertical straightening transmission gear, and the first section of vertical straightening transmission gear drives the vertical straightening meshing gear and the vertical straightening meshing driven gear to realize mechanism rotation. The transmission principle of the transverse straightening mechanism is similar.
As shown in fig. 3, the upper nip roll 35, the upper guide roll 39 and the upper straightening roll 37 in the vertical straightening mechanism 34 are respectively provided with an up-down movement adjusting mechanism, the up-down movement adjusting mechanism of the upper nip roll 35 includes an adjusting bolt a16, an adjusting bolt B21, a positive internal thread adjusting gear 23, a main adjusting gear 24 and a negative internal thread adjusting gear 25, the positive internal thread adjusting gear 23, the main adjusting gear 24 and the negative internal thread adjusting gear 25 are horizontally arranged above the upper nip roll 35, the positive internal thread adjusting gear 23 and the negative internal thread adjusting gear 25 are respectively engaged with the main adjusting gear 24, the positive internal thread adjusting gear 23 and the negative internal thread adjusting gear 25 are respectively connected with bearing seats at both ends of the upper nip roll 35 through adjusting bolts B21, and the adjusting bolt a16 is connected with the main adjusting gear 24.
The main adjusting gear 24 is driven by the adjusting bolt A16 to rotate, the main adjusting gear 24 drives the positive-thread adjusting gear 23 and the negative-thread adjusting gear 25 to synchronously rotate, and the upper biting roller 35 is driven to move up and down by the adjusting bolt B21.
The up-and-down movement adjusting mechanism and principle of the upper guide roller 39 and the upper straightening roller 37 are the same as those of the upper nip roller 35.
As shown in fig. 4, the structure diagram of the main transmission system of the straightening machine includes a main transmission shaft, a lateral straightening main transmission shaft bevel gear, a coupler, a motor reducer, a lateral straightening main transmission shaft, a main transmission shaft bevel gear, etc. The motor reducer drives the main transmission shaft to rotate through the coupler, and then drives the main transmission shaft to rotate so as to drive the vertical straightening mechanism. The main transmission shaft helical gear drives the transverse straightening main transmission shaft helical gear, and the transverse straightening main transmission shaft helical gear drives the transverse straightening main transmission shaft to drive the transverse straightening mechanism.
As shown in FIG. 5, the structure of the main transmission system of the straightening machine is a partial diagram, and the main transmission system comprises a main transmission gear shaft, a transverse straightening mechanism and the like. The main transmission shaft drives the main transmission gear shaft through the bevel gear, and the main transmission gear shaft drives the transverse straightening mechanism.
During straightening, the position of the movable upper bite roller 35 is adjusted according to the specification of the sample, so that the proper roll gap is ensured, and the sample can be conveniently and effectively bitten in the straightening process. According to the pre-bending degree of the sample, the position of the movable upper straightening roller 37 is adjusted, and the proper reverse bending rate of each straightening and bending pass is set to ensure the straightening effect of the sample.
Claims (6)
1. The utility model provides a wire rod mechanical properties test sample straightener which characterized in that: comprises a vertical straightening mechanism (34) and a horizontal straightening mechanism (33) which are sequentially arranged according to the running direction of a sample;
the vertical straightening mechanism (34) comprises a nip roller, a vertical straightening roller and guide rollers which are sequentially arranged according to the running direction of a sample, wherein the nip roller comprises an upper nip roller (35) and a lower nip roller (36) which are arranged up and down, the guide rollers comprise an upper guide roller (39) and a lower guide roller (40) which are arranged up and down, the vertical straightening roller comprises a plurality of upper straightening rollers (37) and a plurality of lower straightening rollers (38), the number of the upper straightening rollers (37) is one less than that of the lower straightening rollers (38), the upper straightening rollers (37) are positioned between two adjacent lower straightening rollers (38), the upper nip roller (35), the upper guide roller (39) and the upper straightening rollers (37) are all rollers capable of moving up and down, and the lower nip roller (36), the lower guide roller (40) and the lower straightening rollers (38) are all fixed rollers;
the transverse straightening mechanism (33) comprises a plurality of pairs of vertically arranged straightening rollers which are sequentially arranged according to the running direction of the sample;
and the upper bite roll (35), the lower bite roll (36), the upper guide roll (39), the lower guide roll (40), the upper straightening roll (37) and the lower straightening roll (38) in the vertical straightening mechanism (34) and the straightening rolls in the transverse straightening mechanism (33) are all provided with V-shaped hole patterns matched with the samples.
2. The wire rod mechanical property test sample straightener of claim 1, characterized in that: and a lower nip roll (36), a lower straightening roll (38) and a lower guide roll (40) in the vertical straightening mechanism (34) and a straightening roll vertically arranged in the transverse straightening mechanism (33) are connected with a driving motor through a gear transmission mechanism.
3. The wire rod mechanical property test sample straightener of claim 1, characterized in that: the number of the upper straightening rollers (37) in the vertical straightening mechanism (34) is three, the number of the lower straightening rollers (38) is four, and the three upper straightening rollers (37) are respectively positioned between two adjacent lower straightening rollers (38).
4. The wire rod mechanical property test sample straightener of claim 1, characterized in that: an upper nip roll (35), an upper guide roll (39) and an upper straightening roll (37) in the vertical straightening mechanism (34) are respectively provided with an up-and-down adjusting mechanism, the up-and-down adjusting mechanism of the upper nip roll (35) comprises an adjusting bolt A (16), an adjusting bolt B (21), a positive internal thread adjusting gear (23), a main adjusting gear (24) and a reverse internal thread adjusting gear (25), the positive internal thread adjusting gear (23), the main adjusting gear (24) and the reverse internal thread adjusting gear (25) are horizontally arranged above the upper nip roll (35), the positive internal thread adjusting gear (23) and the reverse internal thread adjusting gear (25) are respectively engaged with the main adjusting gear (24), the positive internal thread adjusting gear (23) and the reverse internal thread adjusting gear (25) are respectively connected with bearing seats at two ends of the upper nip roll (35) through adjusting bolts B (21), the adjusting bolt A (16) is connected with a main adjusting gear (24), and the up-and-down adjusting mechanism of the upper guide roll (39) and the upper straightening roll (37) is the same as the up-and-down adjusting mechanism of the upper nip roll (35).
5. A sample straightening method for a wire rod mechanical property test is characterized by comprising the following steps: by using the sample straightener for testing the mechanical properties of wire rods as defined in claims 1-4, during straightening, the bent sample is straightened by making the arc of the bent sample upwards or downwards and entering the vertical straightening roll through the nip roll for vertical straightening, and then entering the transverse straightening mechanism through the guide roll for transverse straightening of a plurality of pairs of vertically arranged straightening rolls.
6. The wire rod mechanical property test sample straightener of claim 5 is characterized in that: in the straightening process, the distances between an upper nip roll (35) and a lower nip roll (36) and between an upper guide roll (39) and a lower guide roll (40) are respectively adjusted according to the specification of a sample, so that a proper roll gap is ensured; the vertical distance between the upper straightening roll (37) and the lower straightening roll (38) is adjusted according to the bending degree of the sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825959.9A CN113680851A (en) | 2021-07-21 | 2021-07-21 | Sample straightener for testing mechanical properties of wire rod and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825959.9A CN113680851A (en) | 2021-07-21 | 2021-07-21 | Sample straightener for testing mechanical properties of wire rod and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113680851A true CN113680851A (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110825959.9A Pending CN113680851A (en) | 2021-07-21 | 2021-07-21 | Sample straightener for testing mechanical properties of wire rod and method thereof |
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| Country | Link |
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| CN (1) | CN113680851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226594A (en) * | 2021-11-30 | 2022-03-25 | 武汉钢铁有限公司 | Straightening method for eliminating internal stress of hot-rolled plain steel bar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949502A (en) * | 2014-04-27 | 2014-07-30 | 唐山正元管业有限公司 | Bent guide rod straightening device |
| JP2017217687A (en) * | 2016-06-10 | 2017-12-14 | Ｊｆｅスチール株式会社 | Steel plate correction method by roll leveller, and roll leveller |
| CN208357527U (en) * | 2017-12-27 | 2019-01-11 | 天津市新玻特种线缆制造有限公司 | A kind of aluminium bar coalignment for carbon-fibre wire processing |
| CN212019214U (en) * | 2020-04-13 | 2020-11-27 | 安平县鑫翔金属网业制造有限公司 | Metal frame net straight wire machine |
-
2021
- 2021-07-21 CN CN202110825959.9A patent/CN113680851A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949502A (en) * | 2014-04-27 | 2014-07-30 | 唐山正元管业有限公司 | Bent guide rod straightening device |
| JP2017217687A (en) * | 2016-06-10 | 2017-12-14 | Ｊｆｅスチール株式会社 | Steel plate correction method by roll leveller, and roll leveller |
| CN208357527U (en) * | 2017-12-27 | 2019-01-11 | 天津市新玻特种线缆制造有限公司 | A kind of aluminium bar coalignment for carbon-fibre wire processing |
| CN212019214U (en) * | 2020-04-13 | 2020-11-27 | 安平县鑫翔金属网业制造有限公司 | Metal frame net straight wire machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226594A (en) * | 2021-11-30 | 2022-03-25 | 武汉钢铁有限公司 | Straightening method for eliminating internal stress of hot-rolled plain steel bar |
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Application publication date: 20211123 |