CN109622680B - Manufacturing method of double-layer stepped ten-blade outer reinforcing plate - Google Patents
Manufacturing method of double-layer stepped ten-blade outer reinforcing plate Download PDFInfo
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- CN109622680B CN109622680B CN201811466852.4A CN201811466852A CN109622680B CN 109622680 B CN109622680 B CN 109622680B CN 201811466852 A CN201811466852 A CN 201811466852A CN 109622680 B CN109622680 B CN 109622680B
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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
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
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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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
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Abstract
A manufacturing method of a double-layer stepped ten-blade outer stiffening plate relates to the technical field of manufacturing of outer stiffening plates for stainless steel car bodies, and comprises the steps of replacing a stop rule of a bending machine with a stepped double-layer stop rule, and bending outer stiffening plate materials according to ten-blade bending sequences of bending lines L1, L10, L7, L6, L9, L8, L4, L5, L2 and L3. The stepped double-layer blocking ruler is adopted, steps of the stepped double-layer blocking ruler can be used for material overlapping, a plurality of specific materials can be simultaneously processed, and the production rate is improved; through a specific ten-knife bending sequence, the size out-of-tolerance generated by the accumulated bending of the material part tolerance by ten knives can be avoided, and meanwhile, the flatness of the material part after molding can be ensured; the tolerance can be accumulated to the middle part of the material part, so that the dimension required by a drawing is not out of tolerance, and the material part is not bent sideways.
Description
Technical Field
The invention relates to the technical field of manufacturing of an external reinforcing plate for a stainless steel vehicle body, in particular to a manufacturing method of a double-layer stepped ten-blade external reinforcing plate.
Background
As shown in fig. 1 and 2, the cross-sectional shape of the outer stiffening plate is complex, and the outer stiffening plate is formed by bending an outer stiffening plate 1 by ten knives through a bending machine, before bending, according to the drawing size requirements, bending lines of L1 to L10 totaling ten knives are drawn on the outer stiffening plate 1, and then the outer stiffening plate 1 is divided into eleven regions, namely a first region 1-1 of the material to an eleventh region 1-11 of the material. In the conventional bending method, the outer reinforcing plate material 1 is bent by using a stop ruler of a bending machine, and ten knives are sequentially bent from a bending line L1 to a bending line L10. Due to the fact that the outer reinforcing plate material part 1 is malleable, the bending method can easily cause the size tolerance of the bent outer reinforcing plate to exceed the drawing requirement; and after the outer reinforcing plate is bent and formed, the flatness and the key size of the outer reinforcing plate can seriously influence the quality of the leg of the horse to be pressed in the next process. Meanwhile, the bending forming precision requirement of the outer reinforcing plate is high, the operation is complex, the production efficiency is low, the number of the materials to be bent is large, and the quality and the yield are difficult to guarantee, so that the bending process of the outer reinforcing plate restricts the production progress of a company for a long time.
Disclosure of Invention
The invention provides a manufacturing method of a double-layer stepped ten-blade outer reinforcing plate, aiming at solving the technical problems that the size of a bent ten-blade is out of tolerance, the flatness of a formed material part is poor, the quality of a horse leg pressing in the next working procedure is influenced, the formed material part is easy to bend sideways, and the production efficiency is low in the conventional bending method.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the manufacturing method of the double-layer stepped ten-blade outer reinforcing plate comprises the following steps:
replacing a blocking ruler of a bending machine with a stepped double-layer blocking ruler, wherein the stepped double-layer blocking ruler comprises a second-order back stop A, a first-order upper back stop B and a first-order lower back stop C, the blocking end surfaces of the first-order upper back stop B and the first-order lower back stop C are coplanar, the height sum of the first-order upper back stop B and the first-order lower back stop C is larger than the outer diameter R of the bending part of the outer reinforcing plate material piece, and the height of the second-order back stop A is larger than the outer diameter R of the bending part of the outer reinforcing plate material piece;
step two, the upper end face of the first-stage upper rear stop B is flush with the upper end face of the bending machine female die, the outer end face of the first section of the material piece of the outer reinforcing plate material piece is made to lean against the stop end face of the first-stage upper rear stop B, and the bending machine male die is used for bending the outer reinforcing plate material piece along a bending line L1 for the first time;
step three, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die, enabling the rear end face of the first section of the material piece bent in the step two to lean against the stop end face of the second-order rear baffle A, pushing the outer reinforcing plate material piece backwards along the bending machine table face so as to enable the bending line L10 of the outer reinforcing plate material piece to be placed on the upper end face of the bending machine female die, and then bending the outer reinforcing plate material piece by using the bending machine male die along the bending line L10 through a second knife;
step four, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die, turning the bent outer reinforcing plate material piece in the step three for 180 degrees, enabling the rear end face of the first section of the material piece of the outer reinforcing plate material piece to lean against the stop end face of the first-order lower rear baffle C, pushing the outer reinforcing plate material piece forward along the table face of the bending machine, so that the bending line L7 of the outer reinforcing plate material piece is placed on the upper end face of the bending machine female die, and then bending the outer reinforcing plate material piece by using the bending machine male die along the bending line L7 for third-knife bending;
step five, keeping the upper end face of the first-stage upper rear baffle B flush with the upper end face of the bending machine female die, turning the bent outer reinforcing plate material piece in the step four for 180 degrees, changing the front and back directions, enabling the rear end face of the eighth section of the material piece of the outer reinforcing plate material piece to lean against the stop end face of the first-stage lower rear baffle C, pushing the outer reinforcing plate material piece forward along the table face of the bending machine, so that the bending line L6 of the outer reinforcing plate material piece is placed on the upper end face of the bending machine female die, and then utilizing the bending machine male die to bend the outer reinforcing plate material piece for the fourth time along the bending line L6;
sixthly, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die, enabling the rear end face of the eleventh section of the material piece of the outer reinforcing plate material piece bent in the fifth step to lean against the stop end face of the first-order upper rear baffle B, pushing the outer reinforcing plate material piece backwards along the table top of the bending machine, so that the bending line L9 of the outer reinforcing plate material piece is placed on the upper end face of the bending machine female die, and then utilizing a bending machine male die to bend the outer reinforcing plate material piece for the fifth time along the bending line L9;
seventhly, keeping the upper end face of the first-stage upper rear baffle B flush with the upper end face of the bending machine female die, turning the bent outer reinforcing plate material piece in the sixth step for 180 degrees, enabling the rear end face of the tenth section of the outer reinforcing plate material piece to lean against the stop end face of the first-stage lower rear baffle C, enabling the bending line L8 of the outer reinforcing plate material piece to be placed on the upper end face of the bending machine female die, and then bending the outer reinforcing plate material piece by using the bending machine male die along the bending line L8 for sixth-knife bending;
step eight, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die, changing the front and back directions of the outer reinforcing plate material piece bent in the step seven, enabling the rear end face of the first section of the material piece to lean against the stop end face of the first-order lower rear baffle C, then pushing the outer reinforcing plate material piece backwards along the bending machine table surface so as to enable the bending line L4 of the outer reinforcing plate material piece to be placed on the upper end face of the bending machine female die, and then utilizing a bending machine male die to bend the outer reinforcing plate material piece for the seventh knife along the bending line L4;
step nine, keeping the upper end face of the first-stage upper rear baffle B flush with the upper end face of the bending machine female die, turning the outer reinforcing plate material piece bent in the step eight by 180 degrees, enabling the rear end face of the fourth section of the material piece of the outer reinforcing plate material piece to lean against the stop end face of the first-stage lower rear baffle C, pushing the outer reinforcing plate material piece forward along the table face of the bending machine, so that the bending line L5 of the outer reinforcing plate material piece is placed on the upper end face of the bending machine female die, and bending the outer reinforcing plate material piece by using the bending machine male die along the bending line L5 for eighth-knife bending;
step ten, the lower end face of the first-order lower rear baffle C is flush with the upper end face of a bending machine female die, the rear end face of the first section of the material piece of the outer reinforcing plate material piece bent in the step nine is abutted against the stop end face of the first-order upper rear baffle B, the outer reinforcing plate material piece is pushed forwards along the table face of the bending machine, so that the bending line L2 of the outer reinforcing plate material piece is placed on the upper end face of the bending machine female die, and the bending machine male die is used for conducting ninth-knife bending on the outer reinforcing plate material piece along the bending line L2;
eleven, leveling the upper end face of the first-order upper rear baffle B with the upper end face of a bending machine female die, turning the outer reinforcing plate material piece bent in the tenth step by 180 degrees, leaning the rear end face of the second section of the material piece of the outer reinforcing plate material piece against the end face of a baffle of the first-order lower rear baffle C, placing the bending line L3 of the outer reinforcing plate material piece on the upper end face of the bending machine female die, and performing tenth cutting bending on the outer reinforcing plate material piece along the bending line L3 by using a bending machine male die to complete the bending manufacture of the outer reinforcing plate.
The invention has the following beneficial effects:
1) the invention adopts the stepped double-layer blocking ruler to replace the original blocking ruler of the bending machine, the stepped double-layer blocking ruler can support a material part to carry out three-layer positioning, namely, an R shaft is added to a numerical control bending machine tool, and the cost for machine tool modification can be saved by about 30 ten thousand yuan.
2) The stepped double-layer blocking ruler has the advantages that the steps can be used for material overlapping, multiple specific materials can be simultaneously processed, and the production efficiency is improved;
3) according to the invention, through a specific ten-knife bending sequence, the size out-of-tolerance generated by the accumulated bending of the material part tolerance by ten knives can be avoided, and the flatness of the formed material part can be ensured;
4) according to the invention, through a specific ten-cutter bending sequence, the tolerance can be accumulated to the middle part of the material part, so that the dimension required by a drawing is not out of tolerance, and the material part is not bent aside.
Drawings
Fig. 1 is a schematic structural view of an outer reinforcing plate member before bending.
Fig. 2 is a schematic structural view of the outer reinforcing plate member after being bent.
Fig. 3 is a schematic cross-sectional structure diagram of the stepped double-layer gauge in the present invention.
FIG. 4 is a schematic structural diagram of a double-layer stepped ten-blade outer stiffening plate before and after bending a first blade according to the manufacturing method of the invention.
FIG. 5 is a schematic structural view of the double-layer stepped ten-blade outer stiffening plate of the present invention before and after bending by the second blade.
FIG. 6 is a schematic structural view of the double-layer stepped ten-blade outer stiffening plate of the present invention before and after bending by the third blade.
FIG. 7 is a schematic structural view of the double-layer stepped ten-blade outer stiffening plate manufacturing method of the present invention before and after the fourth blade is bent.
FIG. 8 is a schematic structural view of the double-layer stepped ten-blade outer stiffening plate manufacturing method of the present invention before and after the fifth blade is bent.
FIG. 9 is a schematic structural view of the manufacturing method of the double-layer stepped ten-blade external stiffener before and after bending by the sixth blade.
FIG. 10 is a schematic structural view of a seventh blade before and after bending according to the method for manufacturing a double-layer stepped ten-blade external stiffener.
FIG. 11 is a schematic structural view of the manufacturing method of the double-layer stepped ten-blade external stiffener before and after the eighth-blade bending.
FIG. 12 is a schematic structural view of a double-stepped ten-blade outer gusset of the present invention before and after bending by a ninth blade.
FIG. 13 is a schematic structural view of the double-layer stepped ten-blade outer gusset of the present invention before and after bending by the tenth blade.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 13, in fig. 4 to 13, a letter J indicates a structure of the outer reinforcing sheet material 1 before being bent at the present step, and a letter K indicates a structure of the outer reinforcing sheet material 1 after being bent at the present step. The manufacturing method of the double-layer stepped ten-blade outer reinforcing plate comprises the following steps of:
replacing a blocking ruler of a bending machine with a stepped double-layer blocking ruler 2, wherein the stepped double-layer blocking ruler 2 comprises a second-order back stop A, a first-order upper back stop B and a first-order lower back stop C, the stop end faces of the first-order upper back stop B and the first-order lower back stop C are coplanar, the height sum of the first-order upper back stop B and the first-order lower back stop C is larger than the outer diameter R of the bending part arc of the outer reinforcing plate material 1, and the height of the second-order back stop A is larger than the outer diameter R of the bending part arc of the outer reinforcing plate material 1;
step two, the upper end face of the first-order upper rear baffle B is flush with the upper end face of the bending machine female die 3, the outer end face of the first section 1-1 of the material of the outer reinforcing plate material 1 is enabled to lean against the baffle end face of the first-order upper rear baffle B, and the bending machine male die 4 is utilized to bend the outer reinforcing plate material 1 along a bending line L1;
step three, keeping the upper end face of the first-order upper rear stop B flush with the upper end face of the bending machine female die 3, enabling the rear end face of the first section 1-1 of the material piece bent in the step two to lean against the stop end face of the second-order rear stop A, pushing the outer reinforcing plate material piece 1 backwards along the table top of the bending machine, so that the bending line L10 of the outer reinforcing plate material piece 1 is placed on the upper end face of the bending machine female die 3, and then bending the outer reinforcing plate material piece 1 by a second knife along the bending line L10 through the bending machine male die 4;
step four, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die 3, turning the bent outer reinforcing plate material 1 in the step three for 180 degrees, enabling the rear end face of the first section 1-1 of the material of the outer reinforcing plate material 1 to lean against the stop end face of the first-order lower rear baffle C, pushing the outer reinforcing plate material 1 forwards along the table face of the bending machine so as to enable the bending line L7 of the outer reinforcing plate material 1 to be placed on the upper end face of the bending machine female die 3, and then utilizing the bending machine male die 4 to bend the outer reinforcing plate material 1 for the third time along the bending line L7;
step five, keeping the upper end face of the first-stage upper rear baffle B flush with the upper end face of the bending machine female die 3, turning the bent outer reinforcing plate material 1 in the step four for 180 degrees and changing the front and back directions, leaning the rear end faces of eighth sections 1-8 of the material of the outer reinforcing plate material 1 against the stop end face of the first-stage lower rear baffle C, pushing the outer reinforcing plate material 1 forward along the table face of the bending machine so as to enable the bending line L6 of the outer reinforcing plate material 1 to be placed on the upper end face of the bending machine female die 3, and then utilizing the bending machine male die 4 to bend the outer reinforcing plate material 1 for a fourth time along the bending line L6;
sixthly, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die 3, enabling the rear end face of the eleventh section 1-11 of the material of the outer reinforcing plate material 1 bent in the fifth step to lean against the stop end face of the first-order upper rear baffle B, pushing the outer reinforcing plate material 1 backwards along the table face of the bending machine, so that the bending line L9 of the outer reinforcing plate material 1 is placed on the upper end face of the bending machine female die 3, and then bending the outer reinforcing plate material 1 for the fifth time by using the bending machine male die 4 along the bending line L9;
seventhly, keeping the upper end face of the first-stage upper rear baffle B flush with the upper end face of the bending machine female die 3, turning the bent outer reinforcing plate material 1 in the sixth step for 180 degrees, enabling the rear end faces of the tenth sections 1-10 of the material of the outer reinforcing plate material 1 to lean against the stop end face of the first-stage lower rear baffle C, enabling the bending line L8 of the outer reinforcing plate material 1 to be placed on the upper end face of the bending machine female die 3, and then bending the outer reinforcing plate material 1 by using the bending machine male die 4 along the bending line L8 for sixth-knife bending;
step eight, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die 3, changing the front and back directions of the outer reinforcing plate material 1 after being bent in the step seven, enabling the rear end face of the first section 1-1 of the material to lean against the stop end face of the first-order lower rear baffle C, then pushing the outer reinforcing plate material 1 backwards along the table face of the bending machine, so that the bending line L4 of the outer reinforcing plate material 1 is placed on the upper end face of the bending machine female die 3, and then performing seventh-knife bending on the outer reinforcing plate material 1 along the bending line L4 by using a bending machine male die 4;
step nine, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of the bending machine female die 3, turning the outer reinforcing plate material 1 bent in the step eight by 180 degrees, leaning the rear end face of the fourth section 1-4 of the material of the outer reinforcing plate material 1 against the stop end face of the first-order lower rear baffle C, pushing the outer reinforcing plate material 1 forwards along the table top of the bending machine so as to enable the bending line L5 of the outer reinforcing plate material 1 to be placed on the upper end face of the bending machine female die 3, and bending the outer reinforcing plate material 1 by using the bending machine male die 4 along the bending line L5 for eighth-knife bending;
step ten, the lower end face of the first-order lower rear baffle C is flush with the upper end face of the bending machine female die 3, the rear end face of the first section 1-1 of the material of the outer reinforcing plate material 1 after being bent in the step nine is abutted against the stop end face of the first-order upper rear baffle B, the outer reinforcing plate material 1 is pushed forwards along the table face of the bending machine, so that the bending line L2 of the outer reinforcing plate material 1 is placed on the upper end face of the bending machine female die 3, and the bending machine male die 4 is used for conducting ninth-knife bending on the outer reinforcing plate material 1 along the bending line L2;
eleven, leveling the upper end face of the first-order upper rear bumper B with the upper end face of a bending machine female die 3, turning the outer reinforcing plate material 1 bent in the step ten by 180 degrees, leaning the rear end face of the second material section 1-2 of the outer reinforcing plate material 1 against the stop end face of the first-order lower rear bumper C, placing the bending line L3 of the outer reinforcing plate material 1 on the upper end face of the bending machine female die 3, and performing tenth-knife bending on the outer reinforcing plate material 1 along the bending line L3 by using a bending machine male die 4 to complete the bending manufacture of the outer reinforcing plate.
Through detection, the size and the flatness of the outer reinforcing plate manufactured by the method meet the product quality requirement, and the forming quality of the outer reinforcing plate is improved.
Claims (1)
1. The manufacturing method of the double-layer stepped ten-blade outer reinforcing plate is characterized by comprising the following steps of:
replacing a blocking ruler of a bending machine with a stepped double-layer blocking ruler (2), wherein the stepped double-layer blocking ruler (2) comprises a second-order back stop A, a first-order upper back stop B and a first-order lower back stop C, the blocking end faces of the first-order upper back stop B and the first-order lower back stop C are coplanar, the height sum of the first-order upper back stop B and the first-order lower back stop C is larger than the outer diameter R of a bending part arc of an outer reinforcing plate material piece (1), and the height sum of the second-order back stop A is larger than the outer diameter R of the bending part arc of the outer reinforcing plate material piece (1);
the upper end face of the first-order upper rear baffle B is flush with the upper end face of a bending machine female die (3), the outer end face of a first section (1-1) of the outer reinforcing plate material piece (1) is enabled to lean against the end face of a first-order upper rear baffle B, and a bending machine male die (4) is utilized to bend the outer reinforcing plate material piece (1) along a bending line L1 for the first time;
step three, keeping the upper end surface of the first-order upper rear stop B flush with the upper end surface of a bending machine female die (3), enabling the rear end surface of the first section (1-1) of the material piece bent in the step two to lean against the stop end surface of the second-order rear stop A, pushing the outer reinforcing plate material piece (1) backwards along the table surface of the bending machine, so that the bending line L10 of the outer reinforcing plate material piece (1) is placed on the upper end surface of the bending machine female die (3), and then bending the outer reinforcing plate material piece (1) by a second knife along the bending line L10 through a bending machine male die (4);
step four, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of a bending machine female die (3), turning the bent outer reinforcing plate material piece (1) in the step three for 180 degrees, enabling the rear end face of a first section (1-1) of the material piece of the outer reinforcing plate material piece (1) to lean against the stop end face of the first-order lower rear baffle C, pushing the outer reinforcing plate material piece (1) forwards along the table face of the bending machine, enabling the bending line L7 of the outer reinforcing plate material piece (1) to be placed on the upper end face of the bending machine female die (3), and then utilizing a bending machine male die (4) to bend the outer reinforcing plate material piece (1) for the third time along the bending line L7;
fifthly, keeping the upper end face of the first-stage upper rear baffle B flush with the upper end face of a bending machine female die (3), turning the bent outer reinforcing plate material part (1) in the fourth step for 180 degrees and changing the front and back directions, enabling the rear end face of the eighth section (1-8) of the material part of the outer reinforcing plate material part (1) to lean against the stop end face of the first-stage lower rear baffle C, pushing the outer reinforcing plate material part (1) forwards along the table surface of the bending machine, enabling the bending line L6 of the outer reinforcing plate material part (1) to be placed on the upper end face of the bending machine female die (3), and then utilizing a bending machine male die (4) to bend the outer reinforcing plate material part (1) for the fourth time along the bending line L6;
sixthly, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of a bending machine female die (3), enabling the rear end face of the eleventh section (1-11) of the material of the outer reinforcing plate material (1) bent in the fifth step to lean against the stop end face of the first-order upper rear baffle B, pushing the outer reinforcing plate material (1) backwards along the table top of the bending machine, so that the bending line L9 of the outer reinforcing plate material (1) is placed on the upper end face of the bending machine female die (3), and bending the outer reinforcing plate material (1) by using a bending machine male die (4) along the bending line L9 for fifth-knife bending;
seventhly, keeping the upper end face of the first-stage upper rear baffle B flush with the upper end face of the bending machine female die (3), turning the bent outer reinforcing plate material piece (1) in the sixth step for 180 degrees, enabling the rear end face of the tenth section (1-10) of the material piece of the outer reinforcing plate material piece (1) to lean against the stop end face of the first-stage lower rear baffle C, enabling the bending line L8 of the outer reinforcing plate material piece (1) to be placed on the upper end face of the bending machine female die (3), and then bending the outer reinforcing plate material piece (1) by using a bending machine male die (4) along the bending line L8 for sixth-knife bending;
eighthly, keeping the upper end face of the first-order upper rear stop B flush with the upper end face of a bending machine female die (3), changing the front and back directions of the seven-step bent outer reinforcing plate material part (1), enabling the rear end face of the first section (1-1) of the material part to lean against the stop end face of the first-order lower rear stop C, then pushing the outer reinforcing plate material part (1) backwards along the table top of the bending machine so as to enable the bending line L4 of the outer reinforcing plate material part (1) to be placed on the upper end face of the bending machine female die (3), and then bending the outer reinforcing plate material part (1) with a seventh knife along the bending line L4 by using a bending machine male die (4);
step nine, keeping the upper end face of the first-order upper rear baffle B flush with the upper end face of a bending machine female die (3), turning the outer reinforcing plate material piece (1) bent in the step eight by 180 degrees, leaning the rear end face of a fourth section (1-4) of the material piece of the outer reinforcing plate material piece (1) against the stop end face of the first-order lower rear baffle C, pushing the outer reinforcing plate material piece (1) forwards along the table top of the bending machine, so that the bending line L5 of the outer reinforcing plate material piece (1) is placed on the upper end face of the bending machine female die (3), and bending the outer reinforcing plate material piece (1) by using a male die (4) for eighth-knife bending along the bending line L5;
tenthly, enabling the lower end face of the first-order lower rear baffle C to be flush with the upper end face of a bending machine female die (3), enabling the rear end face of the first section (1-1) of the outer reinforcing plate material (1) bent in the step nine to lean against the baffle end face of the first-order upper rear baffle B, pushing the outer reinforcing plate material (1) forwards along the table face of the bending machine, so that the bending line L2 of the outer reinforcing plate material (1) is placed on the upper end face of the bending machine female die (3), and bending the outer reinforcing plate material (1) by using a bending machine male die (4) along the bending line L2 for ninth-knife bending;
eleven, leveling the upper end face of the first-order upper rear baffle B with the upper end face of a bending machine female die (3), turning the outer reinforcing plate material (1) bent in the step ten by 180 degrees, leaning the rear end face of a second section (1-2) of the material of the outer reinforcing plate material (1) against the stop end face of the first-order lower rear baffle C, placing the bending line L3 of the outer reinforcing plate material (1) on the upper end face of the bending machine female die (3), and performing tenth bending on the outer reinforcing plate material (1) along the bending line L3 by using a bending machine male die (4) so as to finish the bending manufacture of the outer reinforcing plate;
the bending line L1, the bending line L2, the bending line L3, the bending line L4, the bending line L5, the bending line L6, the bending line L7, the bending line L8, the bending line L9 and the bending line L10 are ten bending lines drawn on the outer reinforcing plate material piece (1); the first material part section (1-1), the second material part section (1-2), the third material part section (1-3), the fourth material part section (1-4), the fifth material part section (1-5), the sixth material part section (1-6), the seventh material part section (1-7), the eighth material part section (1-8), the ninth material part section (1-9), the tenth material part section (1-10) and the tenth material part section (1-11) are eleven area sections, wherein the eleven area sections are divided by the ten bending lines, of the outer reinforcing plate material part (1).
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| CN201811466852.4A CN109622680B (en) | 2018-12-03 | 2018-12-03 | Manufacturing method of double-layer stepped ten-blade outer reinforcing plate |
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| CN201811466852.4A CN109622680B (en) | 2018-12-03 | 2018-12-03 | Manufacturing method of double-layer stepped ten-blade outer reinforcing plate |
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| CN109622680A (en) | 2019-04-16 |
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