CN111112467B - Non-drift-diameter rib pressing plate forming die and rib pressing curved plate machining method - Google Patents
Non-drift-diameter rib pressing plate forming die and rib pressing curved plate machining method Download PDFInfo
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- CN111112467B CN111112467B CN202010004037.7A CN202010004037A CN111112467B CN 111112467 B CN111112467 B CN 111112467B CN 202010004037 A CN202010004037 A CN 202010004037A CN 111112467 B CN111112467 B CN 111112467B
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/04—Movable or exchangeable mountings for tools
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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Abstract
The invention provides a non-drift-diameter rib pressing plate forming die which comprises a female die holder and a male die holder, wherein the female die holder is provided with at least two rib pressing grooves, and the shapes of the inner walls of the rib pressing grooves are matched with the shapes of the outer walls of ribs to be processed; the male die is arranged on the male die base, and the shape of the outer wall of the male die is matched with the shape of the inner wall of the rib to be processed; the male die is formed by splicing a plurality of male die segments, and the male die segments are detachably fixed on the male die holder; the two ends of the rib pressing groove are provided with female die end sections, and the positions of the female die end sections in the rib pressing groove are adjustable. The non-drift-diameter rib pressing plate forming die can adjust the lengths of the male die and the female die by splicing the male die sections and adjusting the distance between the female die end sections at the two ends of the rib pressing groove, so that the requirement of one-time forming of a plurality of ribs with different sizes is met, the application range of the die is greatly expanded, and a large amount of die production design investment is avoided.
Description
Technical Field
The invention belongs to the field of ocean engineering manufacturing processes, and particularly relates to a non-drift-diameter rib pressing plate forming die and a rib pressing curved plate processing method.
Background
A marine equipment floating body outer plate is an arc-shaped closed structure and mainly comprises a large number of high-strength pressure rib plates which are welded; the high-strength low-alloy steel plate is required to have high bearing capacity in the using process, and the self weight is strictly controlled, so that the low-alloy steel plate is formed by bending a low-alloy high-strength thin plate; in order to better meet the use requirement, the bent plate needs to be ribbed so as to enhance the strength and the rigidity of the bent plate.
The traditional processing method is that firstly bending is carried out, and then a set of special rib pressing die is made to press reinforcing ribs on a bent piece. The special rib pressing die is complex in structure and high in maintenance cost, and one set of die can only finish the rib pressing process of one reinforcing rib at a bent part at one time, so that the production efficiency is low. In order to meet the production requirement, only a rib pressing die can be added, so that not only is a large area occupied, but also the production cost is increased. Secondly, when the thin plate is bent, repeated debugging is needed, the debugging time is long, the size is easy to be unstable, and then rib pressing is carried out, so that the size of the debugged bent piece is easy to deform, and the product percent of pass is reduced.
In addition, due to the structural design requirement, the bending plate needs to be subjected to multiple non-through-diameter ribbing, and the non-through-diameter ribbing means that two ends of the ribbing are closed, are spaced from the outer wall of the thin plate by a certain distance and do not penetrate through the outer wall of the thin plate. Because the length and the spacing of the ribbing have various specifications, a die needs to be designed independently for the ribbing of each specification, and the number of the dies is large, so that the manufacturing cost of the die is high; secondly, in the process of multi-channel non-through-diameter rib pressing, due to the fact that the material flowing speeds of two end portions of the rib pressing are poor, the weak portions cannot be supplemented by the material flowing in time, pressing cracks are easy to generate, and great difficulty is brought to processing and manufacturing of rib pressing part plates.
In addition, the reinforcing ribs are generally rectangular cylinders, which are not favorable for demolding, and the positions of the bottoms of the reinforcing ribs, which are connected with the thin plate, are easy to concentrate stress, so that cracking is caused.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention is designed to provide a non-through-diameter rib-pressing plate forming mold and a rib-pressing curved plate processing method, so as to meet the requirement of one-step forming of a plurality of ribs with different specifications, thereby reducing the production and design cost of the mold. Meanwhile, the processing method of firstly pressing ribs and then bending is adopted, so that the debugging time in the bending process is reduced, and the product percent of pass is improved.
In order to achieve the above and other related purposes, the invention provides a non-drift diameter rib pressing plate forming die, which comprises a female die holder and a male die holder, wherein the female die holder is provided with at least two rib pressing grooves, and the shapes of the inner walls of the rib pressing grooves are matched with the shapes of the outer walls of ribs to be processed; the male die is arranged on the male die base, and the shape of the outer wall of the male die is matched with the shape of the inner wall of the rib to be processed; the male die is formed by splicing a plurality of male die segments, and the male die segments are detachably fixed on a male die holder; the two ends of the rib pressing groove are provided with female die end sections, and the positions of the female die end sections in the rib pressing groove are adjustable. The non-drift-diameter rib pressing plate forming die can adjust the lengths of the male die and the female die only by splicing the male die sections and adjusting the distance between the female die end sections at the two ends of the rib pressing groove, so that the requirement of one-time forming of a plurality of ribs with different sizes is met, the application range of the die is greatly expanded, and a large amount of die production design investment is avoided.
Specifically, the cross section of the rib pressing groove is in a wedge shape with a wide outer part and a narrow inner part, the inner walls of two sides of the rib pressing groove are inclined smooth planes or curved surfaces, and the connecting positions of the inner walls of two sides of the rib pressing groove and the groove bottom surface are in smooth transition. Through setting up drawing of patterns inclination to reduce the frictional force when the ribbing drawing of patterns, the ribbing drawing of patterns of being convenient for.
Specifically, the cross section of the female die end section is in a wedge shape matched with the rib pressing groove, the inner side face of the female die end section is an inclined smooth plane or curved surface, and the joints of the inner side face and the inner walls of the two sides of the rib pressing groove and the bottom surface of the groove are in smooth transition, so that the problem that the weak part of the rib pressing groove is prone to cracking due to the fact that the material at the two ends of the rib pressing groove flows at a low speed in the rib pressing process is solved.
Specifically, the male die segment is fixed on the male die holder through a bolt; the section of the end part of the female die is fixed in the rib pressing groove through a bolt. So as to conveniently adjust the length of the convex die and the concave die according to the length of the pre-pressed rib.
In particular, the number of punch segments comprises two punch end segments.
Specifically, the plurality of male die segments further comprise male die standard segments and/or male die length adjusting segments so as to adapt to the rib pressing requirements of different lengths.
Specifically, the forming die further comprises a pressure head part, and a rib pressing groove matched with the male die is formed in the pressure head part. The pressing rib is ensured not to be twisted or deformed in the bending process.
Based on the same invention concept, the invention also provides a method for processing the ribbed curved plate by using the forming die, which comprises the following steps:
s1, lofting the blank, marking a rib pressing position line according to design requirements, and reserving allowance around the blank according to the number of ribs;
s2, adjusting the lengths of the rib pressing groove and the male die according to the length of the rib pressing to be processed; mounting the female die holder and the male die holder on an oil press, and adjusting the male die, the rib pressing groove and the rib pressing position line to be aligned in the vertical direction; descending and stamping the male die to press ribs on the blank to obtain a rib pressing plate;
s3, performing fire leveling on the rib pressing plate;
s4, cutting off the residual allowance on the flattened rib pressing plate;
s5, mounting the pressure head piece on the oil press, enabling the rib pressing groove of the pressure head piece to be matched with the outer wall of a rib pressing on the rib pressing plate, and respectively pressing the pressure head piece from two ends of the rib pressing plate to the middle along the length direction of the rib pressing to obtain a rib pressing curved plate;
and S6, checking the line type of the obtained ribbed curved plate by using a sample plate, and if the linear type of the obtained ribbed curved plate is not qualified, repeating the step S5 until the qualified ribbed curved plate is obtained.
According to the method for processing the ribbed curved plate by using the forming die, the processing mode of firstly ribbing and then bending is adopted, so that the situations that a bent piece is easy to deform and needs to be debugged repeatedly in the traditional processing method are greatly reduced, the debugging time in the bending process is shortened, and the product percent of pass is improved. Meanwhile, the method can form a plurality of beads with different specifications at one time, and the processing efficiency of the beads is effectively improved.
Preferably, in step S1, the single-sided margin in the bead length direction is 20mm, and the single-sided margin L in the bead width direction and the bead number N satisfy: and L is 20+10 (N-2), wherein N is more than or equal to 2, so that shrinkage variables generated in the blank bar pressing process are offset, and the yield of the bar pressing piece is improved. Preferably, the heating temperature in step S3 is 700-800 ℃ to eliminate the defects of bending, unevenness and the like of the ribbed plate for the purpose of correction.
As described above, the non-drift-diameter rib-pressing plate forming die and the rib-pressing curved plate processing method of the invention have the following beneficial effects:
according to the non-through-diameter rib pressing plate forming die and the rib pressing curved plate processing method, the lengths of the male die and the female die can be adjusted only by splicing the male die sections and adjusting the distance between the female die end sections at the two ends of the rib pressing groove, so that the requirement of one-time forming of a plurality of ribs with different sizes is met, the application range of the die is greatly expanded, and a large amount of die production design investment is avoided. Meanwhile, the processing mode of firstly pressing ribs and then bending is adopted, the situations that the bending piece is easy to deform and needs to be debugged repeatedly in the traditional processing method are greatly reduced, the debugging time in the bending process is shortened, and the processing efficiency of pressing ribs on the bending piece is further improved.
Drawings
Fig. 1 is a schematic diagram of a male die of a non-drift-diameter rib pressing plate forming die.
Figure 2 is a left side view of the male die of figure 1.
Fig. 3 is a schematic diagram of a female die of the non-drift-diameter rib pressing plate forming die.
Fig. 4 is a left side view of the female mold of fig. 3.
Fig. 5 is a schematic diagram of a pressing head part of the non-drift-diameter rib pressing plate forming die.
Fig. 6 is a schematic use view of a press head part of the non-drift-diameter rib plate pressing forming die.
Description of the reference numerals
The punch die comprises a punch die holder 1, a punch end segment 11, a punch standard segment 12, a punch length adjusting segment 13, a bolt 14, a die holder 2, a rib pressing groove 21, a die end segment 22, a pressure head part 3, a rib pressing groove 31, a supporting block 4 and a groove 41.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 6. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1 to 6, the non-drift diameter rib pressing plate forming die comprises a female die holder 2 and a male die holder 1, wherein at least one rib pressing groove 21 is formed in the female die holder 2, and the shape of the inner wall of the rib pressing groove 21 is matched with the shape of the outer wall of a rib to be processed; a male die is arranged on the male die base 1, and the shape of the outer wall of the male die is matched with the shape of the inner wall of the rib to be processed; the male die is formed by splicing a plurality of male die segments, and the male die segments are detachably fixed on the male die holder 1; the two ends of the ribbing groove 21 are provided with female die end sections 22, and the positions of the female die end sections 22 in the ribbing groove 21 are adjustable. The cross section of the ribbing groove 21 is in a wedge shape with a wide outside and a narrow inside, the inner walls at two sides of the ribbing groove 21 are inclined smooth planes or curved surfaces, the slope of the grooves is kept unchanged or gradually reduced, and the joints of the inner walls at two sides of the ribbing groove 21 and the groove bottom surface are in smooth transition; the cross section of the female die end section 22 is in a wedge shape matched with the ribbing groove 21, the inner side surface of the female die end section 22 is an inclined smooth plane or curved surface, the slope of the inner side surface is kept unchanged or gradually reduced, and the joints of the inner side surface and the inner walls of the two sides of the ribbing groove 21 and the groove bottom surface are in smooth transition. The male die segment is fixed on the male die holder 1 through a bolt 14; the die end segments 22 are bolted into the beading grooves 21. The plurality of male die segments comprises at least two male end segments 11 and may further comprise a male die standard segment 12 and/or a male die length adjustment segment 13.
The forming die further comprises a pressure head part 3, and a rib pressing groove 31 matched with the male die is formed in the pressure head part 3.
During processing, firstly, male die segments are selected according to the length of a rib to be pressed, for example, two male die standard segments 12, two male die end segments 11 and one male die length adjusting segment 13 are selected for splicing, and the selected male die segments are fixed on the male die holder 1 sequentially through bolts 14. And then the distance between the female die end sections 22 at the two ends in the rib pressing groove 21 is adjusted according to the length of the pre-pressing rib, and the adjusted female die end sections 22 are fixed on the female die holder 2 through bolts.
When the male die segments are spliced, attention is paid to the splicing center and the splicing sequence of each male die segment, the male die length adjusting segment 13 is taken as the center, and the male die standard segment 12 and the male die end segment 11 are sequentially spliced at two ends.
When the rib pressing plate is bent, the rib pressing groove 31 of the pressing head part 3 is matched with the outer wall of a rib on the rib pressing plate, so that the rib pressing plate is prevented from being distorted and deformed in the bending process.
The invention also provides a method for processing the non-drift-diameter ribbed curved plate by using the forming die, which comprises the following steps:
s1, lofting the blank, marking out rib pressing position lines according to design requirements, and reserving allowance around the blank according to the number of ribs to prevent the blank from shrinking in the machining process. Preferably, the unilateral surplus of rib pressing length direction is 20mm, and unilateral surplus L and rib pressing figure N of rib pressing width direction satisfy: l is 20+10 (N-2), wherein N is more than or equal to 2, and the specific setting of the rib pressing allowance is shown in a table I;
s2, adjusting the lengths of the rib pressing groove and the male die according to the length of the rib pressing to be processed; mounting the female die holder and the male die holder on an oil press, and adjusting the male die, the rib pressing groove and the rib pressing position line to be aligned in the vertical direction; descending and punching the male die to press ribs on the blank to obtain a rib pressing plate;
s3, performing fire leveling on the rib pressing plate, wherein the heating temperature is 700-800 ℃, the highest temperature is strictly limited to be more than 900 ℃, and the lowest temperature is not lower than 600 ℃; the hot processing of the same rib pressing plate is not suitable for more than 3 times, and when the temperature is cooled to 200-400 ℃, beating, bending and forming are strictly forbidden; the leveling allowable deviation of the rib pressing plate is 1.5 mm/m;
s4, cutting off the residual allowance on the flattened rib pressing plate;
s5, installing a pressure head piece 3 on an oil press as an upper die, arranging a lower die as a supporting block 4 with a groove 41 in the middle of the top, placing a rib pressing plate between the upper die and the lower die, enabling a rib pressing groove 31 on the pressure head piece 3 to be matched with the outer wall of a rib pressing on the rib pressing plate, slowly pressing the pressure head piece from two ends of the rib pressing plate to the middle along the length direction of the rib pressing, and pressing the rib pressing plate into the groove 41 on the supporting block 4 through the pressure head piece 3, thereby obtaining a rib pressing curved plate;
and S6, checking the line type of the obtained ribbed curved plate by using a sample plate, and if the linear type of the obtained ribbed curved plate is not qualified, repeating the step S5 until the qualified ribbed curved plate is obtained.
TABLE 1 Rib pressing part allowance setting
In conclusion, the non-drift-diameter rib pressing plate forming die and the rib pressing curved plate processing method can adjust the lengths of the male die and the female die only by splicing the male die sections and adjusting the distance between the female die end sections at the two ends of the rib pressing groove, so that the requirement of one-time forming of a plurality of ribs with different sizes is met, the application range of the die is greatly expanded, and a large amount of die production design investment is avoided. Secondly, the invention adopts a processing mode of firstly pressing ribs and then bending, which not only can reduce the complexity of a rib pressing die and the maintenance cost, but also can reduce the situation that the traditional processing method is easy to cause the deformation of a bent piece and needs repeated debugging, and shorten the debugging time in the bending process, thereby improving the processing efficiency of the rib pressing of the bent piece.
The rib pressing plate produced by the method is suitable for a floating body outer plate of marine equipment, and the product has the advantages of complex structure, large quantity and large process difficulty. The beading form is different from the ordinary beading. Through experimental verification, the design of the allowance can ensure the strict control of the defects of the rib pressing plate. In addition, the process sequence of the curved surface ribbing forming has advantages on quality assurance. The design of the mould has the advantage of high utilization rate, and the economy is reflected.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A non-drift diameter rib pressing plate forming die comprises a female die holder (2) and a male die holder (1), wherein at least two rib pressing grooves (21) are formed in the female die holder (2), and the shapes of the inner walls of the rib pressing grooves (21) are matched with the shapes of the outer walls of ribs to be processed; the stamping die is characterized in that the male die is formed by splicing a plurality of male die segments, and the male die segments are detachably fixed on the male die holder (1); the die end sections (22) are arranged at two ends of the rib pressing groove (21), the positions of the die end sections (22) in the rib pressing groove (21) are adjustable, and the male die sections comprise two male die end sections (11).
2. The non-drift-diameter rib pressing plate forming die is characterized in that the cross section of the rib pressing groove (21) is in a wedge shape with the outer width being wide and the inner width being narrow, the inner walls of the two sides of the rib pressing groove (21) are inclined smooth planes or curved surfaces, and the joint of the inner walls of the two sides of the rib pressing groove (21) and the bottom surface of the groove is in smooth transition.
3. The non-drift-diameter rib pressing plate forming die is characterized in that the cross section of the female die end section (22) is in a wedge shape matched with the rib pressing groove (21), the inner side face of the female die end section (22) is an inclined smooth plane or curved surface, and the joints of the inner side face and the inner walls and the groove bottom faces of the two sides of the rib pressing groove (21) are in smooth transition.
4. The non-drift-diameter rib plate forming die is characterized in that the male die section is fixed on the male die holder (1) through a bolt (14); the female die end section (22) is fixed in the rib pressing groove (21) through a bolt.
5. The non-through-diameter rib plate forming die according to claim 4, wherein the plurality of male die segments further comprise a male die standard segment (12) and a male die length adjusting segment (13).
6. The non-drift-diameter rib pressing plate forming die is characterized by further comprising a pressing head piece (3) serving as an upper die and a supporting block (4) serving as a lower die, wherein a rib pressing groove (31) matched with the male die is formed in the pressing head piece (3), and a groove (41) is formed in the middle of the top of the supporting block (4).
7. A method of manufacturing a ribbed curved plate using the molding die set forth in claim 6, comprising the steps of:
s1, lofting the blank, marking a rib pressing position line according to design requirements, and reserving allowance around the blank according to the number of ribs;
s2, adjusting the lengths of the rib pressing groove and the male die according to the length of the rib pressing to be processed; installing a female die holder and a male die holder on an oil press, and adjusting the male die, the rib pressing groove and the rib pressing position line to be aligned in the vertical direction; the male die descends and punches to press ribs on the blank to obtain a rib pressing plate;
s3, performing fire leveling on the rib pressing plate;
s4, cutting off the residual allowance on the flattened rib pressing plate;
s5, installing a pressure head piece on an oil press as an upper die, arranging a lower die as a supporting block with a groove in the middle of the top, arranging a rib pressing plate between the upper die and the lower die, enabling a rib pressing groove on the pressure head piece to be matched with the outer wall of a rib pressing on the rib pressing plate, slowly pressing the pressure head piece from two ends of the rib pressing plate to the middle along the length direction of the rib pressing, and pressing the rib pressing plate into the groove on the supporting block through the pressure head piece, thereby obtaining a rib pressing curved plate;
and S6, checking the line type of the obtained ribbed curved plate by using a sample plate, and if the linear type of the obtained ribbed curved plate is not qualified, repeating the step S5 until the qualified ribbed curved plate is obtained.
8. The method according to claim 7, wherein in step S1, the single margin in the bead length direction is 20mm, and the single margin L in the bead width direction and the number N of beads satisfy: l is 20+10 (N-2), wherein N is more than or equal to 2.
9. The method according to claim 7, wherein the heating temperature in step S3 is 700-800 ℃.
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| CN202010004037.7A CN111112467B (en) | 2020-01-03 | 2020-01-03 | Non-drift-diameter rib pressing plate forming die and rib pressing curved plate machining method |
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| CN111570593B (en) * | 2020-05-22 | 2022-03-29 | 宁波信幸隆密封制品有限公司 | Convex-concave sealing rib processing and forming device for sealing element |
| CN112122456A (en) * | 2020-07-24 | 2020-12-25 | 江苏通鼎宽带有限公司 | Pressing die and preparation method of flat plate reinforcing rib |
| CN113996705B (en) * | 2020-07-27 | 2024-02-23 | 苏州铭峰精密机械有限公司 | Bending forming structure and method for large arc belt reinforcing rib |
| CN113878006B (en) * | 2021-11-18 | 2024-04-02 | 内蒙古第一机械集团股份有限公司 | Sheet covering piece reinforcing rib forming die and forming method |
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| CN111112467A (en) | 2020-05-08 |
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