CN113020337B - Bending process for cold-rolled steel sheet metal part - Google Patents

Bending process for cold-rolled steel sheet metal part Download PDF

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Publication number
CN113020337B
CN113020337B CN202110221255.0A CN202110221255A CN113020337B CN 113020337 B CN113020337 B CN 113020337B CN 202110221255 A CN202110221255 A CN 202110221255A CN 113020337 B CN113020337 B CN 113020337B
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bending
cold
steel sheet
sheet metal
auxiliary
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CN113020337A (en
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请求不公布姓名
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Guangzhou Antong Industrial Co ltd
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Guangzhou Antong Industrial Co ltd
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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/008—Bending sheet metal along straight lines, e.g. to form simple curves combined with heating or cooling of the bends
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • 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
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention discloses a bending process of a cold-rolled steel sheet metal part, belonging to the field of bending processes.

Description

Bending process for cold-rolled steel sheet metal part
Technical Field
The invention relates to the field of bending processes, in particular to a bending process of a cold-rolled steel sheet metal part.
Background
The cold rolling is a product which is formed by taking a hot rolled steel coil as a raw material, removing oxide skin through acid cleaning, and then rolling at the room temperature below the recrystallization temperature. The cold-rolled sheet has good performance, namely, cold-rolled strip steel and steel plates with thinner thickness and higher precision can be obtained by cold rolling, the cold-rolled sheet has high flatness, high surface smoothness, clean and bright surface, easy coating and plating processing, multiple varieties and wide application, simultaneously has the characteristics of high stamping performance, no aging and low yield point, and is widely used for automobile manufacturing, electric appliance products and the like.
After the cold-rolled sheet is rolled, the rolled sheet is often wound into a cylindrical shape for convenient transportation and storage, and the rolled sheet needs to be processed according to actual use conditions at a later stage.
In the bending process, if the bending is carried out for one time, the avoidance problem is not considered, a straight knife is adopted for bending, and if the bending is carried out for multiple times; in some cases, the problem of avoiding is considered, as shown in fig. 10 and fig. 11 (m represents a bending knife, and n represents a cold-rolled sheet), in the prior art, a small bending knife or a large bending knife is generally adopted to bend the cold-rolled sheet in an avoiding manner; however, when the large bending knife cannot avoid the position, the bending is performed by the following method: as shown in fig. 12 (m denotes a bending knife, n denotes a cold-rolled sheet, and k denotes a beading device), the cold-rolled sheet is first bent to a certain angle (stopped before hitting the knife), and then beading is performed to press the beads to a desired angle.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a bending process of a cold-rolled steel sheet metal part, which is used for extruding and bending the cold-rolled steel sheet metal part by adopting a hollow bending-resistant straight knife, on one hand, the hollow bending-resistant straight knife can generate corresponding bending deformation along with the touch of the cold-rolled steel sheet metal part, and the self-adaptive position avoidance of the cold-rolled steel sheet metal part is realized.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A bending process for a cold rolled steel sheet metal part comprises the following steps:
s1, placing a workpiece: stably placing a cold-rolled steel sheet metal part to be processed on a bending table, and enabling a bending part to face the lower side of a hollow bending-resistant straight knife;
s2, bending: starting bending equipment to drive a hollow bending-resistant straight knife to move downwards, and extruding the cold-rolled steel sheet metal part to bend the cold-rolled steel sheet metal part to a required angle;
s3, self-adaptive avoiding: when the cold-rolled steel sheet metal part touches the side end of the hollow bending-resistant straight knife in the bending process, the hollow bending-resistant straight knife can be correspondingly bent, and self-adaptive position avoidance is carried out on the cold-rolled steel sheet metal part;
s4, cooling in multiple ways: meanwhile, the bending process of the hollow bending-resistant straight knife can drive cooling liquid in the hollow bending-resistant straight knife to circularly flow, so that the hollow bending-resistant straight knife and the cold-rolled steel sheet metal part are cooled on one hand, and the hollow bending-resistant straight knife and the cold-rolled steel sheet metal part are cooled on the other hand;
according to the invention, the hollow bending-resistant straight knife is adopted to extrude and bend the cold-rolled steel sheet metal part, on one hand, the hollow bending-resistant straight knife can generate corresponding bending deformation along with the touch of the cold-rolled steel sheet metal part, and the self-adaptive position avoidance of the cold-rolled steel sheet metal part is realized.
Further, resistant straight sword that bends of cavity includes the connecting plate with bending equipment fixed connection, the positive downside of connecting plate is equipped with the tool bit, a pair of company's post of fixedly connected with between tool bit and the connecting plate, a pair of company's post is located the head and the tail both sides position of tool bit respectively, and when using, place the cold rolling steel sheet metal component in the bending bench upper end that the middle zone of a pair of company's post corresponds for even the post is difficult to take place to touch with the cold rolling steel sheet metal component of bending.
Further, V type groove has been seted up to the inside of tool bit, the inside in V type groove is equipped with V type stock solution cover, the surface of V type stock solution cover and the inner wall fixed connection in V type groove, the inside packing of V type stock solution cover has the coolant liquid, when bending cold rolled steel sheet metal component, cold rolled steel sheet metal component and tool bit interact, mechanical energy turns into internal energy for self temperature risees fast, can cool off tool bit and cold rolled steel sheet metal component through the inside coolant liquid of V type stock solution cover, reduces the temperature of tool bit and cold rolled steel sheet metal component, and then reduces the influence of heat to cold rolled steel sheet metal component hardness, intensity, makes cold rolled steel sheet metal component difficult emergence resilience after bending.
Furthermore, a main pressure rod and an auxiliary pressure rod which are symmetrical to each other are further arranged inside the V-shaped liquid storage sleeve, a pair of cloth sleeves is fixedly connected between the cutter head and the connecting plate, a plurality of uniformly distributed main pull ropes are arranged inside one of the cloth sleeves, a plurality of uniformly distributed auxiliary pull ropes are arranged inside the other cloth sleeve, the main pull ropes are located on the upper side of the auxiliary pressure rod, and the auxiliary pull ropes are located on the upper side of the main pressure rod.
Further, a pair of rectangular channel has been seted up to the upper end of tool bit, and is a pair of the rectangular channel communicates with each other in a pair of upper end in V type groove respectively, the lower extreme of cloth cover and the inner wall fixed connection of rectangular channel, the upper end of main stay cord and vice stay cord all with the lower extreme fixed connection of connecting plate, the lower extreme of main stay cord and vice stay cord all runs through the upper end of rectangular channel and V type stock solution cover in proper order and extends to the inside in V type groove, the lower extreme of main stay cord and the outer end fixed connection of main pressure stick, the lower extreme of vice stay cord and the outer end fixed connection of vice pressure stick promptly: the main pull rope can move to drive the main pressing rod to move, the auxiliary pull rope can move to drive the auxiliary pressing rod to move, in the bending process, when the cold-rolled steel sheet metal part touches the cloth sleeve, the cloth sleeve is gradually changed from a contraction state to a curved straightening state, meanwhile, the main pull rope or the auxiliary pull rope is synchronously bent due to extrusion, and the main pressing rod or the auxiliary pressing rod is driven to move along a V-shaped route in the V-shaped liquid storage sleeve, so that the cloth sleeve and the main pull rope or the auxiliary pull rope can perform corresponding bending deformation along with the extrusion of the cold-rolled steel sheet metal part, and self-adaptive position avoidance is performed, so that the cold-rolled steel sheet metal part can be smoothly bent; meanwhile, the movement of the main pressure rod or the auxiliary pressure rod can affect the change of water pressure in the V-shaped liquid storage sleeve, so that the cooling liquid can flow in a loop along the moving direction of the main pressure rod or the auxiliary pressure rod, on one hand, the cooling liquid after heat exchange and temperature rise in the V-shaped liquid storage sleeve can be cooled again, and on the other hand, the cooling liquid after cooling can enter the V-shaped liquid storage sleeve again to effectively cool the tool bit and the cold rolled steel sheet metal part.
Furthermore, main rope hole and vice rope hole have been seted up respectively on main pressure stick and the vice stick of pressing, main stay cord runs through vice rope hole and rather than inside sliding connection, vice stay cord runs through main rope hole and rather than inside sliding connection for main stay cord is difficult when removing, is difficult for causing the influence to the position of vice pressure stick, and vice stay cord is difficult when removing, is difficult for causing the influence to the position of main pressure stick.
Furthermore, a plurality of uniformly distributed main magnets are fixedly connected to the upper inner wall of the V-shaped groove, auxiliary magnets are fixedly connected to the insides of the main pressure bar and the auxiliary pressure bar, the main pressure bar and the auxiliary pressure bar can be stably positioned inside the V-shaped liquid storage sleeve without external force action through magnetic attraction between the main magnets and the auxiliary magnets, the main pressure bar and the auxiliary pressure bar are close to a pair of upper inner walls of the V-shaped groove, and the main pull rope and the auxiliary pull rope are pulled to enable the main pull rope and the auxiliary pull rope to be in a normal straightening state; and after the bending is finished and the cold rolled steel sheet metal part is taken down, the main pressing rod and the auxiliary pressing rod can move back to the original positions under the action of magnetic force, so that the main pull rope and the auxiliary pull rope are straightened again, and the cloth cover is changed into a vertical state from bending.
Furthermore, a plurality of liquid guide pipes are fixedly connected between the cutter head and the connecting plate, the liquid guide pipes are uniformly distributed in two rows, the liquid guide pipes are positioned between the connecting column and the cloth sleeves, and the two rows of liquid guide pipes are respectively positioned on the same straight line with the pair of cloth sleeves.
Further, the inside fixedly connected with liquid reserve tank of connecting plate, the upper end of catheter run through the connecting plate and with liquid reserve tank fixed connection, the lower extreme of catheter run through the tool bit and with the upper end fixed connection of V type stock solution cover, and V type stock solution cover and liquid reserve tank all communicate with each other with the catheter, the inside of connecting plate still fixedly connected with water-cooled cooling case, water-cooled cooling case is located the outside of liquid reserve tank, and water-cooled cooling case cools down the coolant liquid in the liquid reserve tank, and when main pressure stick or vice pressure stick remove, cause the influence back to water pressure in the V type stock solution cover, coolant liquid after the heat transfer heaies up in the V type stock solution cover can get into in the liquid reserve tank through one of them drain pipe, cools down, and meanwhile, the coolant liquid that has cooled down in the liquid reserve tank can be followed in row of drain pipe gets into V type stock solution cover, effectively cools down tool bit and cold rolled steel sheet metal component.
Furthermore, a plurality of evenly distributed and with external communicating heat transfer hole have been seted up to the inner wall in V type groove, can improve the cooling efficiency of coolant liquid to cold rolled steel sheet metal component through the heat transfer hole, on the one hand, through the circulation of air in the heat transfer hole, can accelerate the heat transfer rate of heat and coolant liquid, on the other hand, when the water pressure of coolant liquid receives the influence of main pressure stick or vice pressure stick in the V type stock solution cover, most coolant liquid can be because of the extrusion of main pressure stick or vice pressure stick and get into corresponding catheter, wherein still have among the coolant liquid of subtotal because of coming too late to get into the catheter, can extrude V type stock solution cover and make it get into in the heat transfer hole, make the cold rolled steel sheet metal component in V type stock solution cover and the tool bit outside be close to even contact, thereby further improve heat exchange efficiency.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, the hollow bending-resistant straight knife is adopted to extrude and bend the cold-rolled steel sheet metal part, on one hand, the hollow bending-resistant straight knife can generate corresponding bending deformation along with the touch of the cold-rolled steel sheet metal part, and the self-adaptive position avoidance of the cold-rolled steel sheet metal part is realized.
(2) The hollow bending-resistant straight knife comprises a connecting plate fixedly connected with bending equipment, a knife head is arranged on the right lower side of the connecting plate, a pair of connecting columns is fixedly connected between the knife head and the connecting plate and respectively located at the head and tail two sides of the knife head, and when the hollow bending-resistant straight knife is used, a cold-rolled steel sheet metal part is placed at the upper end of a bending table corresponding to the middle area of the pair of connecting columns, so that the connecting columns are not prone to being touched with the bent cold-rolled steel sheet metal part.
(3) V type groove has been seted up to the inside of tool bit, the inside in V type groove is equipped with V type stock solution cover, the surface of V type stock solution cover and the inner wall fixed connection in V type groove, the inside packing of V type stock solution cover has the coolant liquid, when bending cold rolling steel sheet metal component, cold rolling steel sheet metal component and tool bit interact, mechanical energy turns into internal energy, make self temperature rise fast, can cool off tool bit and cold rolling steel sheet metal component through the inside coolant liquid of V type stock solution cover, reduce the temperature of tool bit and cold rolling steel sheet metal component, and then reduce the heat to cold rolling steel sheet metal component hardness, the influence of intensity, make cold rolling steel sheet metal component difficult emergence resilience after bending.
(4) The main pull rope can drive the main pressing rod to move through movement, the auxiliary pull rope can drive the auxiliary pressing rod to move through movement, in the bending process, when the cold-rolled steel sheet metal part touches the cloth sleeve, the cloth sleeve is gradually changed from a contraction state to a curved straightening state, meanwhile, the main pull rope or the auxiliary pull rope is synchronously bent due to extrusion, and the main pressing rod or the auxiliary pressing rod is driven to move along a V-shaped route in the V-shaped liquid storage sleeve, so that the cloth sleeve and the main pull rope or the auxiliary pull rope can perform corresponding bending deformation along with the extrusion of the cold-rolled steel sheet metal part, and self-adaptive avoiding is performed, so that the cold-rolled steel sheet metal part can be smoothly bent; meanwhile, the movement of the main pressure rod or the auxiliary pressure rod can influence the change of water pressure in the V-shaped liquid storage sleeve, so that the cooling liquid can follow the moving direction of the main pressure rod or the auxiliary pressure rod to flow in a loop, the cooling liquid after heat exchange and temperature rise in the V-shaped liquid storage sleeve can be cooled again on the one hand, and on the other hand, the cooling liquid after cooling can enter the V-shaped liquid storage sleeve again to effectively cool the tool bit and the cold rolled steel sheet metal part.
(5) Main pressure has seted up main rope hole and vice rope hole on excellent and the vice stick of pressing respectively, and main stay cord runs through vice rope hole and rather than inside sliding connection, and vice stay cord runs through main rope hole and rather than inside sliding connection for main stay cord is when removing, is difficult for causing the influence to vice position of pressing the stick, and vice stay cord is when removing, is difficult for causing the influence to the main position of pressing the stick.
(6) The upper inner wall of the V-shaped groove is fixedly connected with a plurality of uniformly distributed main magnets, the interiors of the main pressure rod and the auxiliary pressure rod are fixedly connected with auxiliary magnets, the main pressure rod and the auxiliary pressure rod can be stably positioned in the V-shaped liquid storage sleeve under the action of no external force through the magnetic attraction between the main magnets and the auxiliary magnets, the main pressure rod and the auxiliary pressure rod are close to a pair of upper inner walls of the V-shaped groove, and the main pull rope and the auxiliary pull rope are pulled to enable the main pull rope and the auxiliary pull rope to be in a normal straightening state; and after the bending is finished and the cold rolled steel sheet metal part is taken down, the main pressing rod and the auxiliary pressing rod can move back to the original positions under the action of magnetic force, so that the main pull rope and the auxiliary pull rope are straightened again, and the cloth cover is changed into a vertical state from bending.
(7) The cooling liquid of water-cooled cooling case in to the liquid reserve tank cools down, moves when main pressure stick or vice pressure stick, causes the influence back to water pressure in the V type liquid reserve tank, and the coolant liquid after the heat transfer intensifies in the V type liquid reserve tank can be through one of them row of catheter entering liquid reserve tank in, cools down, and meanwhile, the coolant liquid of having cooled down in the liquid reserve tank can follow during another row of catheter gets into V type liquid reserve tank, carries out effective cooling to tool bit and cold rolled steel sheet metal component.
(8) A plurality of evenly distributed and with external communicating heat transfer hole have been seted up to the inner wall in V type groove, can improve the cooling efficiency of coolant liquid to cold-rolled steel sheet metal component through the heat transfer hole, on the one hand, through the circulation of air in the heat transfer hole, can accelerate the heat transfer rate of heat and coolant liquid, on the other hand, when the water pressure of coolant liquid receives the influence of owner pressure stick or vice pressure stick in the V type stock solution cover, most coolant liquid can be because of the extrusion of owner pressure stick or vice pressure stick and get into corresponding catheter, wherein still have the coolant liquid of small part because of coming too late to get into the catheter, can extrude V type stock solution cover and make it get into in the heat transfer hole, make the cold-rolled steel sheet metal component in V type stock solution cover and the tool bit outside be close to even contact, thereby further improve heat transfer efficiency.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a perspective view of a hollow bend resistant straight knife of the present invention;
FIG. 3 is a schematic front view of the hollow bend-resistant straight knife of the present invention;
FIG. 4 is a schematic diagram of a front structure of the hollow bend-resistant straight knife of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a schematic front view of the primary press bar of the present invention;
FIG. 7 is a schematic front view of the secondary press bar of the present invention;
FIG. 8 is a schematic structural diagram of the hollow bending-resistant straight knife of the present invention during self-adaptive avoidance;
FIG. 9 is a schematic side view of the hollow bending-resistant straight knife of the present invention;
FIG. 10 is a first structural diagram of a prior art bending process;
FIG. 11 is a schematic view of a bending process structure in the prior art;
FIG. 12 is a third schematic structural view of a bending process according to the prior art; .
The reference numbers in the figures illustrate:
1 cutter head, 101 rectangular groove, 102 heat exchange hole, 2 connecting column, 3 connecting plate, 4 cloth cover, 51 main pull rope, 52 auxiliary pull rope, 61 main pressure bar, 6101 main rope hole, 62 auxiliary pressure bar, 6201 auxiliary rope hole, 7V type liquid storage cover, 8 main magnet, 9 liquid guide pipe, 10 liquid storage box and 11 water cooling type cooling box.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; rather than all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1 and 2, a bending process of a cold-rolled steel sheet metal part includes the following steps:
s1, placing a workpiece: stably placing a cold-rolled steel sheet metal part to be processed on a bending table (indicated by a in figure 2) so that a bending part is opposite to the lower side of a hollow bending-resistant straight knife;
s2, bending: starting bending equipment to drive a hollow bending-resistant straight knife to move downwards, and extruding the cold-rolled steel sheet metal part to bend the cold-rolled steel sheet metal part to a required angle;
s3, self-adaptive avoiding: when the cold-rolled steel sheet metal part touches the side end of the hollow bending-resistant straight knife in the bending process, the hollow bending-resistant straight knife can be correspondingly bent, and self-adaptive position avoidance is carried out on the cold-rolled steel sheet metal part;
s4, cooling in multiple ways: meanwhile, the cooling liquid in the hollow bending-resistant straight knife can be driven to circularly flow in the bending process of the hollow bending-resistant straight knife, so that the hollow bending-resistant straight knife and the cold-rolled steel sheet metal part are cooled on one hand, and the hollow bending-resistant straight knife and the cold-rolled steel sheet metal part are cooled on the other hand;
referring to fig. 2, the hollow bending-resistant straight knife includes a connecting plate 3 fixedly connected to a bending device, a knife head 1 is disposed under the connecting plate 3, a pair of connecting posts 2 is fixedly connected between the knife head 1 and the connecting plate 3, the connecting posts 2 are respectively located at the head and tail sides of the knife head 1, and when the hollow bending-resistant straight knife is used, a cold-rolled steel sheet metal part is placed at the upper end of a bending table (a in fig. 1 represents the bending table) corresponding to the middle region of the connecting posts 2, so that the connecting posts 2 are not easily touched with the bent cold-rolled steel sheet metal part.
Please refer to fig. 3, fig. 4 and fig. 5, a V-shaped groove is formed in the tool bit 1, a V-shaped liquid storage sleeve 7 is arranged in the V-shaped groove, the outer surface of the V-shaped liquid storage sleeve 7 is fixedly connected with the inner wall of the V-shaped groove, and cooling liquid is filled in the V-shaped liquid storage sleeve 7, when the cold rolled steel sheet metal part is bent, the cold rolled steel sheet metal part and the tool bit 1 interact with each other, mechanical energy is converted into internal energy, so that the temperature of the cold rolled steel sheet metal part is rapidly increased, the tool bit 1 and the cold rolled steel sheet metal part can be cooled by the cooling liquid in the V-shaped liquid storage sleeve 7, the temperature of the tool bit 1 and the cold rolled steel sheet metal part is reduced, and further the influence of heat on the hardness and the strength of the cold rolled steel sheet metal part is reduced, so that the cold rolled steel sheet metal part is not easy to rebound after being bent.
Referring to fig. 3, 4 and 5, a main pressure bar 61 and an auxiliary pressure bar 62 which are symmetrical to each other are further arranged inside the V-shaped liquid storage sleeve 7, a pair of cloth sleeves 4 are further fixedly connected between the cutter head 1 and the connecting plate 3, a plurality of main pull ropes 51 which are uniformly distributed are arranged inside one cloth sleeve 4, a plurality of auxiliary pull ropes 52 which are uniformly distributed are arranged inside the other cloth sleeve 4, the main pull rope 51 is located on the upper side of the auxiliary pressure bar 62, the auxiliary pull rope 52 is located on the upper side of the main pressure bar 61, a pair of rectangular grooves 101 are formed in the upper end of the cutter head 1, the pair of rectangular grooves 101 are respectively communicated with a pair of upper ends of the V-shaped groove, the lower end of the cloth sleeve 4 is fixedly connected with the inner wall of the rectangular groove 101, the upper ends of the main pull rope 51 and the auxiliary pull rope 52 are fixedly connected with the lower end of the connecting plate 3, the lower ends of the main pull rope 51 and the auxiliary pull rope 52 sequentially penetrate through the upper ends of the rectangular groove 101 and the V-shaped liquid storage sleeve 7 and extend into the V-shaped groove, the lower end of the main pull rope 51 is fixedly connected with the outer end of the auxiliary pressure bar 61, that is: the main rope 51 can move to drive the main pressing rod 61 to move, the auxiliary rope 52 can move to drive the auxiliary pressing rod 62 to move, please refer to fig. 6 and 7, the main pressing rod 61 and the auxiliary pressing rod 62 are respectively provided with a main rope hole 6101 and an auxiliary rope hole 6201, the main rope 51 penetrates the auxiliary rope hole 6201 and is connected with the inner portion in a sliding manner, the auxiliary rope 52 penetrates the main rope hole 6101 and is connected with the inner portion in a sliding manner, so that the main rope 51 is not easy to influence the position of the auxiliary pressing rod 62 when moving, and the auxiliary rope 52 is not easy to influence the position of the main pressing rod 61 when moving.
Referring to fig. 8, in the bending process, when the cold-rolled steel sheet metal part touches the cloth cover 4, the cloth cover 4 gradually changes from a contracted state to a curved and straightened state, and simultaneously the main pull rope 51 or the auxiliary pull rope 52 is extruded to be synchronously bent, so as to drive the main press rod 61 or the auxiliary press rod 62 to move along the V-shaped path inside the V-shaped liquid storage sleeve 7, so that the cloth cover 4 and the main pull rope 51 or the auxiliary pull rope 52 can perform corresponding bending deformation along with the extrusion of the cold-rolled steel sheet metal part, and perform self-adaptive position avoidance, so that the cold-rolled steel sheet metal part can be smoothly bent; meanwhile, the movement of the main pressure rod 61 or the auxiliary pressure rod 62 can affect the change of water pressure in the V-shaped liquid storage sleeve 7, so that the cooling liquid can flow in a loop along the moving direction of the main pressure rod and the auxiliary pressure rod, on one hand, the cooling liquid after heat exchange and temperature rise in the V-shaped liquid storage sleeve 7 can be cooled again, and on the other hand, the cooling liquid after cooling can enter the V-shaped liquid storage sleeve 7 again to effectively cool the cutter head 1 and the cold rolled steel sheet metal part.
Referring to fig. 5 and 9, the upper inner wall of the V-shaped groove is fixedly connected with a plurality of uniformly distributed main magnets 8, the interiors of the main pressure bar 61 and the auxiliary pressure bar 62 are fixedly connected with auxiliary magnets, the main pressure bar 61 and the auxiliary pressure bar 62 can be stably positioned in the V-shaped liquid storage sleeve 7 without receiving an external force by the magnetic attraction between the main magnets 8 and the auxiliary magnets, and are close to a pair of upper inner walls of the V-shaped groove, and the main pull rope 51 and the auxiliary pull rope 52 are pulled to be in a normal straightening state; moreover, after the bending is finished and the cold-rolled steel sheet metal part is removed, under the action of magnetic force, the main pressing rod 61 and the auxiliary pressing rod 62 can move back to the original positions, so that the main pull rope 51 and the auxiliary pull rope 52 are straightened again, the cloth cover 4 is changed into a vertical state from the bending state, and the following supplementary description is provided: the magnetic force between the main pressing rod 61 and the auxiliary pressing rod 62 is repulsive, so that the main pressing rod 61 and the auxiliary pressing rod 62 can be further promoted to move back to the original positions after the bending is finished.
Please refer to fig. 9, a plurality of liquid guide tubes 9 are fixedly connected between the tool bit 1 and the connecting plate 3, the liquid guide tubes 9 are uniformly distributed in two rows, the liquid guide tubes 9 are located between the connecting column 2 and the cloth cover 4, the two rows of liquid guide tubes 9 are respectively located on the same straight line with the pair of cloth covers 4, a liquid storage tank 10 is fixedly connected inside the connecting plate 3, the liquid storage tank 10 is filled with cooling liquid, the upper end of the liquid guide tube 9 penetrates through the connecting plate 3 and is fixedly connected with the liquid storage tank 10, the lower end of the liquid guide tube 9 penetrates through the tool bit 1 and is fixedly connected with the upper end of the V-shaped liquid storage tank 7, the V-shaped liquid storage tank 7 and the liquid storage tank 10 are both communicated with the liquid guide tube 9, a water-cooled cooling tank 11 is also fixedly connected inside the connecting plate 3, the water-cooled cooling tank 11 is located outside the liquid storage tank 10, the water-cooled cooling tank 11 cools the cooling liquid in the liquid storage tank 10, please refer to fig. 8 and fig. 9, when the main pressure rod 61 or the sub-pressure rod 62 moves, the water pressure in the V-shaped liquid storage tank 7 affects the water pressure in the V-cooled liquid storage tank 9, the cooling liquid guide tube 9 can enter the cold-cooled liquid storage tank 9, and the cooling liquid guide tube 9, and the cooling steel plate 9 can effectively cool the tool bit.
Referring to fig. 5, a plurality of heat exchanging holes 102 are uniformly distributed on the inner wall of the V-shaped groove and are communicated with the outside, and the heat exchanging holes 102 can improve the cooling efficiency of the cooling liquid on the cold rolled steel sheet metal part, on one hand, the heat exchanging rate between heat and the cooling liquid can be accelerated through the air circulation in the heat exchanging holes 102, on the other hand, when the water pressure of the cooling liquid in the V-shaped liquid storage sleeve 7 is affected by the main pressure rod 61 or the auxiliary pressure rod 62, most of the cooling liquid can enter the corresponding liquid guide tube 9 due to the extrusion of the main pressure rod 61 or the auxiliary pressure rod 62, and a small part of the cooling liquid can enter the liquid guide tube 9 too soon and can extrude the V-shaped liquid storage sleeve 7 to enter the heat exchanging holes 102, so that the V-shaped liquid storage sleeve 7 is close to or even contact with the cold rolled steel sheet metal part outside the tool bit 1, thereby further improving the heat exchanging efficiency.
According to the invention, the hollow bending-resistant straight knife is adopted to extrude and bend the cold-rolled steel sheet metal part, on one hand, the hollow bending-resistant straight knife can generate corresponding bending deformation along with the touch of the cold-rolled steel sheet metal part, and the self-adaptive position avoidance of the cold-rolled steel sheet metal part is realized.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims (4)

1. A bending process of a cold rolled steel sheet metal part is characterized in that: the method comprises the following steps:
s1, placing a workpiece: stably placing a cold-rolled steel sheet metal part to be processed on a bending table, and enabling a bending part to face the lower side of a hollow bending-resistant straight knife;
s2, bending: starting bending equipment to drive a hollow bending-resistant straight cutter to move downwards and extrude the cold-rolled steel sheet metal part to bend to a required angle;
s3, self-adaptive avoiding: when the cold-rolled steel sheet metal part touches the side end of the hollow bending-resistant straight knife in the bending process, the hollow bending-resistant straight knife can be correspondingly bent, and self-adaptive position avoidance is carried out on the cold-rolled steel sheet metal part;
s4, cooling in multiple ways: meanwhile, the bending process of the hollow bending-resistant straight knife can drive cooling liquid in the hollow bending-resistant straight knife to circularly flow, so that the hollow bending-resistant straight knife and the cold-rolled steel sheet metal part are cooled on one hand, and the hollow bending-resistant straight knife and the cold-rolled steel sheet metal part are cooled on the other hand;
the hollow bending-resistant straight knife comprises a connecting plate (3) fixedly connected with bending equipment, a knife head (1) is arranged right below the connecting plate (3), a pair of connecting columns (2) is fixedly connected between the knife head (1) and the connecting plate (3), a V-shaped groove is formed in the knife head (1), a V-shaped liquid storage sleeve (7) is arranged in the V-shaped groove, the outer surface of the V-shaped liquid storage sleeve (7) is fixedly connected with the inner wall of the V-shaped groove, and cooling liquid is filled in the V-shaped liquid storage sleeve (7);
a main pressure rod (61) and an auxiliary pressure rod (62) which are symmetrical to each other are further arranged inside the V-shaped liquid storage sleeve (7), a pair of cloth sleeves (4) is further fixedly connected between the cutter head (1) and the connecting plate (3), a plurality of main pull ropes (51) which are uniformly distributed are arranged inside one cloth sleeve (4), a plurality of auxiliary pull ropes (52) which are uniformly distributed are arranged inside the other cloth sleeve (4), the main pull ropes (51) are located on the upper side of the auxiliary pressure rod (62), and the auxiliary pull ropes (52) are located on the upper side of the main pressure rod (61);
a pair of rectangular grooves (101) is formed in the upper end of the cutter head (1), the pair of rectangular grooves (101) are communicated with a pair of upper ends of the V-shaped grooves respectively, the lower end of the cloth sleeve (4) is fixedly connected with the inner wall of the rectangular groove (101), the upper ends of the main pull rope (51) and the auxiliary pull rope (52) are fixedly connected with the lower end of the connecting plate (3), the lower ends of the main pull rope (51) and the auxiliary pull rope (52) sequentially penetrate through the rectangular groove (101) and the upper end of the V-shaped liquid storage sleeve (7) and extend into the V-shaped groove, the lower end of the main pull rope (51) is fixedly connected with the outer end of the main pressure rod (61), and the lower end of the auxiliary pull rope (52) is fixedly connected with the outer end of the auxiliary pressure rod (62);
still a plurality of liquid guide pipes (9) of fixedly connected with between tool bit (1) and connecting plate (3), it is a plurality of liquid guide pipe (9) are two rows of evenly distributed, liquid guide pipe (9) are located between even post (2) and cloth cover (4), and two rows of liquid guide pipes (9) are located same straight line with a pair of cloth cover (4) respectively, the inside fixedly connected with liquid reserve tank (10) of connecting plate (3), the upper end of liquid guide pipe (9) runs through connecting plate (3) and with liquid reserve tank (10) fixed connection, the lower extreme of liquid guide pipe (9) runs through tool bit (1) and with the upper end fixed connection of V type liquid reserve tank cover (7), and V type liquid reserve tank (7) and liquid reserve tank (10) all communicate with each other with liquid guide pipe (9), the inside of connecting plate (3) still fixedly connected with water-cooled cooling case (11), water-cooled cooling case (11) are located the outside of liquid reserve tank (10).
2. The bending process of the cold-rolled steel sheet metal part according to claim 1, characterized in that: the main pressure rod (61) and the auxiliary pressure rod (62) are respectively provided with a main rope hole (6101) and an auxiliary rope hole (6201), the main pull rope (51) penetrates through the auxiliary rope hole (6201) and is in sliding connection with the inner part of the auxiliary rope hole, and the auxiliary pull rope (52) penetrates through the main rope hole (6101) and is in sliding connection with the inner part of the auxiliary rope hole.
3. The bending process of the cold-rolled steel sheet metal part according to claim 1, characterized in that: the upper inner wall of the V-shaped groove is fixedly connected with a plurality of uniformly distributed main magnets (8), and the inner parts of the main pressure rod (61) and the auxiliary pressure rod (62) are fixedly connected with auxiliary magnets.
4. The bending process of the cold-rolled steel sheet metal part according to claim 1, characterized in that: the inner wall of the V-shaped groove is provided with a plurality of heat exchange holes (102) which are uniformly distributed and communicated with the outside.
CN202110221255.0A 2021-02-27 2021-02-27 Bending process for cold-rolled steel sheet metal part Active CN113020337B (en)

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JP2632918B2 (en) * 1988-05-13 1997-07-23 株式会社アマダ Plate bending machine
CN104551044A (en) * 2014-12-26 2015-04-29 苏州欧美克合金工具有限公司 Lathe tool with built-in cooling curve
CN207709973U (en) * 2017-09-27 2018-08-10 昆山环友电子科技有限公司 A kind of three blade milling cutter of inner-cooled
CN208230876U (en) * 2018-05-25 2018-12-14 华东交通大学 A kind of interior cooling turning tool of double blade installation
CN209867392U (en) * 2019-05-09 2019-12-31 南京林业大学 Inner-cooling cutter with efficient cooling function
CN110026457A (en) * 2019-05-28 2019-07-19 苏州浪潮智能科技有限公司 A kind of bending for suppressing U-shaped workpiece keeps away a cutter

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