CN112059288B - Automatic adjusting device for shear blade clearance of rolling shear - Google Patents
Automatic adjusting device for shear blade clearance of rolling shear Download PDFInfo
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- CN112059288B CN112059288B CN202010866093.1A CN202010866093A CN112059288B CN 112059288 B CN112059288 B CN 112059288B CN 202010866093 A CN202010866093 A CN 202010866093A CN 112059288 B CN112059288 B CN 112059288B
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- sliding seat
- knife rest
- shearing blade
- shear
- rest box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
- B23D35/005—Adjusting the position of the cutting members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
- B23D35/002—Means for mounting the cutting members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
Abstract
The invention belongs to the technical field of metallurgical equipment, and particularly relates to an automatic adjusting device for a shearing blade clearance of hobbing shear, which comprises a shearing blade frame box main board and a shearing blade frame box cover board which are connected through a bolt to form a shearing blade frame box, wherein two guide shaft sleeves are symmetrically arranged on the left side and the right side of the shearing blade frame box main board and the shearing blade frame box cover board, the lower shearing blade of the hobbing shear is arranged in the shearing blade frame box, the bearing seats are symmetrically arranged on the front side and the rear side of a sliding seat assembly, guide shaft bearing seats are arranged at the left end and the right end of the upper surface of a bearing seat mounting support, two guide shaft sleeves respectively penetrating through the left side and the right side of the guide shaft are fixed in the guide shaft bearing seats, a servo hydraulic cylinder is arranged on the bearing seat mounting support, and a piston rod of the servo hydraulic cylinder is hinged with a connecting part on the side wall of the shearing blade frame box main board through a pin shaft. The position of the lower cutting edge of the hobbing shear can be adjusted through the expansion and contraction of the servo hydraulic cylinder, so that the quality of the shearing section of the wide and thick plate is improved; the automation level of the rolling shear equipment is improved.
Description
Technical Field
The invention belongs to the technical field of metallurgical equipment, and particularly relates to an automatic adjusting device for a gap between cutting edges of a rolling shear.
Background
The rolling cutting shear is an important device for the finishing process of a wide and thick plate production line, is an important tool for realizing cutting, sizing, trimming and the like of the wide and thick plate, and the gap between the cutting edges is an important parameter for ensuring the quality of a cut section and is an important difficult problem which puzzles the control of high-quality plates of the wide and thick plate finishing line. The shear blade gap is scientifically and dynamically adjusted according to the specification and the type of the plate, and the shear blade gap is important to guarantee the quality of the shear plate.
At present, the gap of the cutting edge of the rolling shear cannot be adjusted on line once being installed and debugged. Along with the higher and higher requirements on the quality of the shearing section of a product and the intelligent upgrading requirements of metallurgical equipment, the realization of the automatic adjustment of the shearing blade clearance of the wide and thick plate shearing machine is more and more meaningful.
Therefore, in order to improve the intelligent level of the rolling shear and the quality of the rolling shear on the shearing section of the wide and thick plate, a device for automatically adjusting the gap between the shearing blades needs to be developed.
Disclosure of Invention
Aiming at the defect that the gap between the cutting edges of the existing rolling cutting shears cannot be adjusted, the invention provides the automatic adjusting device for the gap between the cutting edges of the rolling cutting shears, which can realize the online automatic adjustment of the gap between the cutting edges of the rolling cutting shears of the wide and thick plates, and further achieve the purpose of improving the quality of the cut sections of the wide and thick plates.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic adjusting device for the gap between the shear blades of the hobbing shears comprises a hobbing shear lower shear blade, a shear blade box main board, guide shafts, a servo hydraulic cylinder, a bearing seat mounting support, a sliding seat component and a shear blade box cover board, wherein the shear blade box main board and the shear blade box cover board are connected through bolts to form a shear blade box, the lower ends of the shear blade box main board and the shear blade box cover board are fixedly arranged on the sliding seat component, the sliding seat component is arranged on an equipment base flat plate, two guide shaft sleeves are symmetrically arranged on the left side and the right side of the shear blade box main board and the shear blade box cover board and are connected with the shear blade box main board and the shear blade box cover board through countersunk bolts, the hobbing shear blade lower shear blade is mounted in the shear blade box formed by the shear blade box main board and the shear blade box cover board, the bearing seat mounting supports are two, the symmetry sets up both sides around the sliding seat subassembly about the bearing frame installing support upper surface both ends are provided with the guiding axle bearing frame respectively, the guiding axle has two guiding axle sleeves that pass left and right sides respectively and fixes in the guiding axle bearing frame of front and back both sides, servo hydraulic cylinder level sets up on the bearing frame installing support adjacent with shear blade knife rest box mainboard, and is located the middle part of bearing frame installing support upper surface, servo hydraulic cylinder's piston rod is articulated through the connecting portion on round pin axle and the shear blade knife rest box mainboard lateral wall, connecting portion set up the middle part at shear blade knife rest box mainboard lateral wall.
Further, the sliding seat subassembly includes sliding seat fixed block, sliding seat guide block and sliding seat connection base, the left and right sides that the base is connected to the sliding seat becomes down echelonment symmetric distribution, the sliding seat guide block has two, is connected the ladder face of the both sides of base through countersunk screw and sliding seat respectively, the lateral surface of sliding seat guide block is protruding type the below of the protruding type side of sliding seat guide block is provided with sliding seat copper slide rail strip to improve the wearing and tearing that sliding seat guide block and sliding seat connection base and equipment base between the flat board, the sliding seat fixed block has two, sets up the one side at two sliding seat guide blocks respectively, the sliding seat fixed block is fixed on equipment base is dull and stereotyped for restraint and the slip direction of guide block of guide.
And furthermore, a guide block protective cover plate is arranged on the edge of the sliding seat guide block, which is in contact with the sliding seat fixing block, so that dust is prevented from falling into a gap between the sliding seat guide block and the sliding seat fixing block.
Still further, the left and right sides symmetry of shearing edge lower part is provided with the wedge under the hobbing is cut, just the wedge is located one side that hobbing shears lower shearing edge and shearing edge knife rest box apron contacted the medial surface of shearing edge knife rest box apron is provided with two and the corresponding U type wedge recesses of wedge to it is spacing to realize the installation of hobbing shears lower shearing edge be provided with two lugs with the corresponding position of wedge in one side that hobbing shears lower shearing edge and shearing edge knife rest box mainboard contacted all be provided with corresponding through-hole on hobbing shears lower shearing edge, shearing edge knife rest box mainboard and the shearing edge knife rest box apron be provided with the shearing edge latch segment in the through-hole to realize the relative fixation between hobbing shears lower shearing edge, shearing edge knife rest box mainboard and the shearing edge knife rest box apron.
Furthermore, U type wedge recess divide into two sections from top to bottom, and wherein the lower section recess inboard adds has big chamfer to form the wide-mouth, and the wedge on the shear blade is cut down in the hobbing of being convenient for is at installation direction and cooperation, and the upper segment recess is rectangle right angle recess, and the wedge on the shear blade is cut down with the hobbing closely cooperates, guarantees to shear blade link restraint.
Further, the wedge block is located between the two guide bushings.
Furthermore, the surface roughness of the wedge block and the U-shaped wedge groove is less than or equal to Ra3.2, and the flatness of the wedge block and the U-shaped wedge groove is less than or equal to 50 um.
Furthermore, the left side and the right side of the upper part of the lower shearing edge of the hobbing shear are symmetrically provided with four hoisting holes in total, so that the lower shearing edge of the hobbing shear can be conveniently hoisted.
Furthermore, an oil groove is arranged in the guide shaft sleeve, an oil cup is arranged in the guide shaft sleeve, and the guide shaft sleeve and the guide shaft friction pair are lubricated by the oil cup.
Furthermore, a cylinder built-in magnetostrictive displacement sensor is arranged in the servo hydraulic cylinder, so that the position of the piston rod is fed back in real time.
Compared with the prior art, the invention has the following advantages:
1. the position of the lower cutting edge of the hobbing shear can be adjusted through the expansion and contraction of the servo hydraulic cylinder, so that the quality of the shearing section of the wide and thick plate is improved;
2. the servo hydraulic cylinder is used as power for adjusting the position of the lower cutting edge of the rolling shear, so that the automation level of the rolling shear equipment is improved, and a foundation is laid for the intelligent transformation of a metallurgical finishing line rolling shear;
3. the shear blade knife rest box designed by the invention is formed by connecting a shear blade knife rest box main board and a shear blade knife rest box cover plate through bolts, the shear blade knife rest box and the lower shear blade of the roll cutting shear realize positioning and restriction through the matching of a U-shaped wedge-shaped groove and a wedge-shaped block, the shear blade locking block realizes fixed connection, and meanwhile, a hoisting hole is arranged on the lower shear blade of the roll cutting shear, so that the lower shear blade of the roll cutting shear can be conveniently and rapidly replaced, and the production interference is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a sliding seat assembly according to the present invention;
FIG. 3 is a schematic structural view of a main plate of the shear blade holder box of the present invention;
FIG. 4 is a schematic view of the structure of the cover plate of the blade holder box of the present invention;
FIG. 5 is a schematic structural view of a U-shaped wedge-shaped groove according to the present invention;
FIG. 6 is a schematic view of the lower cutting edge of the roll-cutting shears of the present invention;
FIG. 7 is a schematic view of the lower cutting edge of the roll-cutting shears of the present invention;
in the figure, a shear blade-1 under a hobbing shear, a shear blade tool rest box main board-2, a guide shaft sleeve-3, a guide shaft-4, a guide shaft bearing seat-5, a servo hydraulic cylinder-6, a bearing seat mounting bracket-7, a shear blade locking block-8, a sliding seat assembly-9, a shear blade tool rest box cover plate-10, a connecting part-11, a wedge-shaped block-12, a U-shaped wedge-shaped groove-13, a bump-14, a through hole-15, a hoisting hole-16, a sliding seat fixing block-901, a sliding seat copper sliding rail strip-902, a guide block protective cover plate-903, a sliding seat guide block-904 and a sliding seat connecting base-905.
Detailed Description
In order to further illustrate the technical solution of the present invention, the present invention is further illustrated by the following examples.
As shown in fig. 1 to 7, an automatic adjusting device for the gap between the shearing edges of the hobbing shears comprises a lower shearing edge 1 of the hobbing shears, a main board 2 of a shearing edge tool rest box, a guide shaft 4, a servo hydraulic cylinder 6, a bearing seat mounting bracket 7, a sliding seat assembly 9 and a cover board 10 of the shearing edge tool rest box, wherein the main board 2 of the shearing edge tool rest box and the cover board 10 of the shearing edge tool rest box are connected through bolts to form the shearing edge tool rest box, the sliding seat assembly 9 comprises a sliding seat fixing block 901, a sliding seat guide block 904 and a sliding seat connecting base 905, the lower ends of the main board 2 of the shearing edge tool rest box and the cover board 10 of the shearing edge tool rest box are both fixedly arranged on the sliding seat connecting base 905, the left side and the right side of the sliding seat connecting base 905 are symmetrically distributed in an inverted ladder shape, the two sliding seat guide blocks 904 are respectively connected with the ladder surfaces on the two sides of the sliding seat connecting base 905 through countersunk head screws, the outer side of the sliding seat guide block 904 is a convex type, sliding seat copper slide rail strips 902 are arranged below the convex side faces of the sliding seat guide blocks 904 to improve abrasion between the sliding seat guide blocks 904 and a sliding seat connecting base 905 and an equipment base flat plate, two sliding seat fixing blocks 901 are arranged and are respectively arranged on one side of the two sliding seat guide blocks 904, the sliding seat fixing blocks 901 are fixed on the equipment base flat plate and are used for restraining and guiding the sliding direction of the sliding seat guide blocks 904, and guide block protective cover plates 903 are arranged on the edges, which are in contact with the sliding seat fixing blocks 901, of the sliding seat guide blocks 904 to prevent dust from falling into gaps between the sliding seat guide blocks 904 and the sliding seat fixing blocks 901. The left and right sides of the shear blade knife rest box main board 2 and the shear blade knife rest box cover board 10 are symmetrically provided with two guide shaft sleeves 3, oil grooves are formed in the guide shaft sleeves 3, oil cups are installed, and the guide shaft sleeves 3 and the guide shafts 4 are lubricated through the oil cups to form friction pairs. Guide shaft sleeve 3 is connected with cutting edge knife rest box mainboard 2 and cutting edge knife rest box apron 10 through countersunk head bolt, shearing edge 1 is installed in the cutting edge knife rest box that cutting edge knife rest box mainboard 2 and cutting edge knife rest box apron 10 are constituteed under the hobbing shear the left and right sides symmetry on shearing edge 1 upper portion is provided with totally four hole for hoist 16 under the hobbing shear to the hoist and mount of shearing edge 1 under the convenience hobbing shear. The left and right sides symmetry of shearing edge 1 lower part is provided with wedge 12 under the hobbing shear, just wedge 12 is located the hobbing shear one side that shearing edge 1 and shearing edge knife rest box cover board 10 contacted down, wedge 12 is located between two guide shaft sleeve 3. The medial surface of cutting edge knife rest box apron 10 is provided with two U type wedge grooves 13 corresponding with wedge 12, U type wedge groove 13 divide into two sections from top to bottom, and wherein the lower section recess inboard adds has big chamfer to form the wide-mouth, and the wedge 12 on the shearing edge 1 is cut at the installation direction and cooperation under the hobbing of being convenient for, and the upper segment recess is rectangle right angle recess, closely cooperates with wedge 12 on the shearing edge 1 under the hobbing, guarantees to restrict the cutting edge link. The surface roughness of the wedge block 12 and the U-shaped wedge groove 13 is less than or equal to Ra3.2, and the flatness of the wedge block 12 and the U-shaped wedge groove 13 is less than or equal to 50 um. One side that shearing edge 1 and shearing edge knife rest box mainboard 2 contacted under the hobbing shear is provided with two lugs 14 with the corresponding position of wedge 12 to guarantee that shearing edge 1 side and shearing edge knife rest box mainboard 2 and shearing edge knife rest box apron 10 inner wall well contact under the hobbing shear, avoid whole plane at limit portion and shearing edge knife rest box inner wall contact failure all be provided with corresponding through-hole 15 on shearing edge 1, shearing edge knife rest box mainboard 2 and the shearing edge knife rest box apron 10 under the hobbing shear be provided with shearing edge latch segment 8 in the through-hole 15, in order to realize the relative fixation between shearing edge 1, shearing edge knife rest box mainboard 2 and the shearing edge knife rest box apron 10 under the hobbing shear. The two bearing seat mounting supports 7 are symmetrically arranged on the front side and the rear side of the sliding seat assembly 9, guide shaft bearing seats 5 are respectively arranged at the left end and the right end of the upper surface of the bearing seat mounting support 7, two guide shaft sleeves 3 which respectively penetrate through the left side and the right side are fixed in the guide shaft bearing seats 5 on the front side and the rear side, the servo hydraulic cylinder 6 is horizontally arranged on the bearing seat mounting support 7 adjacent to the shear blade knife rest box main board 2 and is located in the middle of the upper surface of the bearing seat mounting support 7, a piston rod of the servo hydraulic cylinder 6 is hinged to a connecting portion 11 on the side wall of the shear blade knife rest box main board 2 through a pin shaft, the connecting portion 11 is arranged in the middle of the side wall of the shear blade knife rest box main board 2, a cylinder built-in magnetostrictive displacement sensor is arranged in the servo hydraulic cylinder 6, and therefore the position of the piston rod is fed back in real time.
While there have been shown and described what are at present considered to be the essential features and advantages of the invention, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a hobbing shear blade clearance automatic regulating apparatus which characterized in that: the shearing device comprises a hobbing shear lower shearing blade (1), a shearing blade knife rest box main board (2), guide shafts (4), a servo hydraulic cylinder (6), a bearing seat mounting support (7), a sliding seat assembly (9) and a shearing blade knife rest box cover plate (10), wherein the shearing blade knife rest box is formed by connecting the shearing blade knife rest box main board (2) and the shearing blade knife rest box cover plate (10) through bolts, the lower ends of the shearing blade knife rest box main board (2) and the shearing blade knife rest box cover plate (10) are fixedly arranged on the sliding seat assembly (9), the sliding seat assembly (9) is placed on an equipment base flat plate, two guide shaft sleeves (3) are symmetrically arranged on the left side and the right side of the shearing blade knife rest box main board (2) and the shearing blade knife rest box cover plate (10), the guide shaft sleeves (3) are connected with the shearing blade knife rest box main board (2) and the shearing blade knife rest box cover plate (10) through countersunk bolts, and the hobbing shear lower shearing blade (1) is installed on the knife rest box main board (2) and the shearing blade knife rest box cover plate (10) ) In the shearing blade knife rest box of constitution, the left and right sides symmetry of shearing blade (1) lower part is provided with wedge (12) under the hobbing shear, just wedge (12) are located the hobbing shear shearing down one side that shearing blade (1) and shearing blade knife rest box apron (10) contacted, the medial surface of shearing blade knife rest box apron (10) is provided with two U type wedge recesses (13) corresponding with wedge (12) to realize the installation of hobbing shear shearing down shearing blade (1) spacing, one side that hobbing shear shearing blade (1) and shearing blade knife rest box mainboard (2) contacted is provided with two lugs (14) with the corresponding position of wedge (12) to guarantee that hobbing shear down shearing blade (1) side and shearing blade knife rest box mainboard (2) and shearing blade knife rest box apron (10) inner wall well contact, avoid whole plane at limit portion and shearing blade box inner wall contact failure, corresponding through holes (15) are formed in the hobbing shear lower cutting edge (1), the cutting edge knife rest box main board (2) and the cutting edge knife rest box cover board (10), cutting edge locking blocks (8) are arranged in the through holes (15) so as to realize the relative fixation among the hobbing shear lower cutting edge (1), the cutting edge knife rest box main board (2) and the cutting edge knife rest box cover board (10), two bearing seat mounting brackets (7) are symmetrically arranged on the front side and the rear side of the sliding seat component (9), guide shaft bearing seats (5) are respectively arranged at the left end and the right end of the upper surface of the bearing seat mounting bracket (7), two guide shaft sleeves (3) which respectively penetrate through the left side and the right side are fixed in the guide shaft bearing seats (5) on the front side and the rear side, a servo hydraulic cylinder (6) is horizontally arranged on the bearing seat mounting bracket (7) adjacent to the cutting edge knife rest box main board (2), the servo hydraulic cylinder (6) is hinged with a connecting part (11) on the side wall of the shear blade knife rest box main board (2) through a pin shaft, and the connecting part (11) is arranged in the middle of the side wall of the shear blade knife rest box main board (2);
the sliding seat assembly (9) comprises sliding seat fixing blocks (901), sliding seat guide blocks (904) and a sliding seat connecting base (905), the left side and the right side of the sliding seat connecting base (905) are symmetrically distributed in an inverted step shape, two sliding seat guide blocks (904) are arranged and are respectively connected with step surfaces on two sides of the sliding seat connecting base (905) through countersunk screws, the outer side surface of each sliding seat guide block (904) is in a convex shape, sliding seat copper sliding rail bars (902) are arranged below the convex side surfaces of the sliding seat guide blocks (904) to improve abrasion between the sliding seat guide blocks (904) and the sliding seat connecting base (905) and an equipment base flat plate, two sliding seat fixing blocks (901) are arranged on one side of the two sliding seat guide blocks (904), and the sliding seat fixing blocks (901) are fixed on the equipment base flat plate, for restraining and guiding the sliding direction of the sliding seat guide block (904).
2. The device for automatically adjusting the gap between the cutting edges of the rolling shear according to claim 1, wherein: and a guide block protective cover plate (903) is arranged on the edge of the sliding seat guide block (904) which is in contact with the sliding seat fixing block (901) to prevent dust from falling into a gap between the sliding seat guide block (904) and the sliding seat fixing block (901).
3. The device for automatically adjusting the gap between the cutting edges of the rolling shear according to claim 1, wherein: u type wedge recess (13) divide into two sections from top to bottom, and wherein the lower section recess inboard has added big chamfer and forms the wide-mouth, and wedge (12) on shear blade (1) are cut down in the hobbing of being convenient for are at installation direction and cooperation, and the upper segment recess is rectangle right angle recess, closely cooperates with wedge (12) on shear blade (1) under the hobbing, guarantees to shear blade link restraint.
4. The device for automatically adjusting the gap between the cutting edges of the rolling shear according to claim 3, wherein: the wedge-shaped block (12) is positioned between the two guide shaft sleeves (3).
5. The device for automatically adjusting the gap between the cutting edges of the rolling shear according to claim 3, wherein: the surface roughness of the wedge block (12) and the U-shaped wedge groove (13) is less than or equal to Ra3.2, and the flatness of the wedge block (12) and the U-shaped wedge groove (13) is less than or equal to 50 um.
6. The device for automatically adjusting the gap between the cutting edges of the rolling shear according to claim 1, wherein: the left side and the right side of the upper part of the lower shearing edge (1) of the rolling shear are symmetrically provided with four hoisting holes (16) in total so as to facilitate hoisting of the lower shearing edge (1) of the rolling shear.
7. The device for automatically adjusting the gap between the cutting edges of the rolling shear according to claim 1, wherein: an oil groove is arranged in the guide shaft sleeve (3), an oil cup is arranged in the guide shaft sleeve, and the guide shaft sleeve (3) and the guide shaft (4) are lubricated by the oil cup to form a friction pair.
8. The device for automatically adjusting the gap between the cutting edges of the rolling shear according to claim 1, wherein: and a cylinder built-in magnetostrictive displacement sensor is arranged in the servo hydraulic cylinder (6), so that the position of the piston rod is fed back in real time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010866093.1A CN112059288B (en) | 2020-08-25 | 2020-08-25 | Automatic adjusting device for shear blade clearance of rolling shear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010866093.1A CN112059288B (en) | 2020-08-25 | 2020-08-25 | Automatic adjusting device for shear blade clearance of rolling shear |
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| CN112059288B true CN112059288B (en) | 2022-02-22 |
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| CN205996298U (en) * | 2016-08-30 | 2017-03-08 | 江阴兴澄特种钢铁有限公司 | A kind of fixed size scissors shearing edge gap adjusting device |
| CN206105021U (en) * | 2016-10-19 | 2017-04-19 | 二重集团（德阳）重型装备股份有限公司 | Bilateral scissors break to pieces limit sword clearance adjustment and retreat device |
| CN107225282A (en) * | 2017-08-08 | 2017-10-03 | 南通华德锻压机床有限公司 | Plate shearing machine upper tool post apparatus for adjusting position |
| CN209520423U (en) * | 2019-02-25 | 2019-10-22 | 茌平恒晟建材有限公司 | Aluminum veneer shear machine knife gap regulating device |
| CN209716600U (en) * | 2019-04-10 | 2019-12-03 | 吉林华信新型结构科技有限公司 | A kind of circle shears |
| CN110508866A (en) * | 2019-06-26 | 2019-11-29 | 太原科技大学 | A kind of combined type cutting edge mode rolling cut flying shearing machine |
| CN111299692A (en) * | 2020-04-16 | 2020-06-19 | 北京京诚之星科技开发有限公司 | Upper tool rest and shearing machine |
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