CN115041930A - Preparation process of high-strength two-piece type wheel rim - Google Patents
Preparation process of high-strength two-piece type wheel rim Download PDFInfo
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Abstract
A preparation process of a high-strength two-piece type wheel rim comprises the following steps: step 1: cutting a plate; step 2: cutting a welding surface: cutting two ends to be welded, and cutting a welding surface into inclined planes, wherein an included angle formed between each inclined plane and a horizontal line is 3-15 degrees; and step 3: rolling; and 4, step 4: flattening; and 5: cutting a welding seam: cutting two edges to be welded into straight edges by utilizing automatic aluminum plate cutting equipment; step 6: direct welding; before direct welding, the process blocks are respectively fixed at two ends of a welding line through two clamps on welding equipment, and a welding starting point and a welding terminal are respectively arranged on the process blocks at the two ends of the welding line during welding; and 7: removing the process blocks: cutting off the process blocks by using cutting equipment; and 8: rounding; and step 9: end cutting; step 10: flanging; step 11: spinning; step 12: heat treatment; step 13: aging; step 14: and (6) machining. The invention can effectively improve the performance of the welding part of the aluminum plate, enhance the strength of the rim product and meet the use requirement of high-end vehicles.
Description
Technical Field
The invention relates to the technical field of rim manufacturing, in particular to a preparation process of a high-strength two-piece type rim.
Background
The two-piece type lock pin wheel is a wheel type that a wheel hub is divided into a wheel rim and a wheel spoke, and the wheel rim and the wheel spoke are fastened by high-strength bolts. The conventional rim manufacturing method comprises the steps of separately processing a rim framework and a T-shaped strip for high-strength bolt connection and then welding and forming, wherein the process steps of the rim framework comprise cutting, rolling, flattening, direct welding, polishing welding flash, removing process blocks, rounding, end cutting, flanging and spinning and forming according to the processing sequence, the process steps of the T-shaped strip comprise cutting, rolling and cutting, finally, the T-shaped strip is placed into the inner wall of the rim framework for compounding after the inner wall of the rim framework is polished, and finally, the T-shaped strip is welded together and then subjected to machining and forming.
For the separated processing of the rim framework and the T-shaped strip, on one hand, the process of processing the rim is added, so that the production time is prolonged, the production efficiency is reduced, and the die equipment which is independently used for processing the T-shaped strip is also added, so that the production cost is improved; on the other hand, the welding of the rim skeleton and the T-shaped strip is easy to generate defects, so that the wheel is fatigued during running, and fails and leaks air.
The invention relates to a technical method for manufacturing a two-piece lock pin wheel rim by utilizing a T-shaped section, which has the application number of 2022100417423, and comprises the steps of extruding the section, and extruding the T-shaped section with a T-shaped strip; cutting, namely cutting the T-shaped section to obtain a work material for preparing the rim; rolling, namely performing rolling treatment on the work material to form an annular blank; flattening, namely flattening the two ends of the gap of the annular blank to form welding sections at the two ends of the gap; direct welding, namely connecting the welding sections at the two ends together to form an annular formed material; performing rounding, namely performing rounding aiming at the welding position of the annular forming material to form a complete rim annular blank; flanging, namely flanging two ends of the rim ring blank to form a flanged ring blank; spinning, namely spinning the flanged ring blank to form a rim ring forming material; and (4) post-processing, namely machining the rim ring forming material to form the rim. The process method can improve the production efficiency, reduce the cost and solve the technical difficulty of fatigue failure in the rim processing.
However, the method disclosed in this patent does not specially treat the welded seam, so that the strength of the welded part of the rim is somewhat deficient. Meanwhile, two sections are not processed after the rim is welded, and certain risk exists in the welding strength.
Disclosure of Invention
Aiming at the technical problem, the technical scheme provides a preparation process of a high-strength two-piece rim, wherein the welding surface is cut into an inclined surface by the additional step of cutting the welding surface, so that the fit degree of the welding surface is increased, and the welding seam can be reduced; and the step of cutting the welding seam can remove burrs and sundries on the welding surface, increase the cleanliness of the welding surface, ensure that the degree of fit between the welding material and the welding surface is higher, effectively increase the strength of the welding seam part and effectively solve the problems. Meanwhile, the step of cutting off the section after welding is added, and the welding strength is ensured.
The invention is realized by the following technical scheme:
a preparation process of a high-strength two-piece type wheel rim is characterized by comprising the following steps:
step 1: cutting a plate: cutting the T-shaped section bar into plates according to the size requirement by using cutting equipment to obtain a work material for preparing the rim;
step 2: cutting a welding surface: after the long edge is cut, cutting two ends to be welded to remove an oxide layer on the surface layer of the welded edge, and simultaneously cutting a welding surface into inclined planes, wherein an included angle formed between each inclined plane and a horizontal line is 3-15 degrees;
and step 3: rolling: utilizing a rolling die and a rolling machine to roll the cut work material to form an annular blank; when the rolling is carried out, the mould on the rolling equipment can be replaced according to the size required by production;
and 4, step 4: flattening: flattening the gap of the annular blank by using a flattening die and flattening equipment, and pressing the plates at two ends of the gap into a plane shape parallel to the horizontal plane;
and 5: cutting a welding seam: cutting two edges to be welded into straight edges by using automatic aluminum cutting equipment, and cutting two fitted end faces into smooth planes;
and 6: direct welding: welding two ends together by friction stir welding of a welding edge which is cut into straight lines to form an annular formed material; before direct welding, the process blocks are respectively fixed at two ends of a welding seam through two clamps on welding equipment, and a welding starting point and a welding terminal are respectively arranged on the process blocks at the two ends of the welding seam during welding;
and 7: removing the process blocks: cutting off the process blocks by using cutting equipment;
and 8: rounding: a rounding die and rounding equipment are utilized to carry out rounding on the welding position of the annular formed material, and the flattened part of the welding position is rounded to form a complete rim ring blank; shaping the ring-shaped formed material after welding;
and step 9: end face cutting: cutting off reserved edges on two sides of the rim ring blank by using end face cutting equipment;
step 10: flanging, namely flanging the two ends of the rim ring blank by using a flanging die and flanging equipment to form a flanged ring blank;
step 11: spinning, namely spinning the flanged ring blank by using a spinning die and spinning equipment to form a rim ring forming material;
step 12: and (3) heat treatment: carrying out heat treatment processing on the rim ring forming material;
step 13: aging: carrying out aging processing on the rim ring formed material subjected to the heat treatment processing;
step 14: machining: and machining the annular formed material of the rim subjected to the aging processing to form the rim.
Furthermore, when the plate cutting operation in the step 1 is performed, a reserved edge of 0.6-1.5 cm needs to be reserved on the basis of accurate size.
Furthermore, the inclined planes in the step 2 are oppositely arranged, and after the rolling operation, the two inclined planes are matched.
Further, the rolling die in the step 3, the flattening die in the step 4, the rounding die in the step 7, the flanging die in the step 10 and the spinning die in the step 11 are provided with T-shaped grooves around the axes thereof; and the rolling die, the flattening die and the rounding die can be disassembled along the T-shaped groove, so that the rim demoulding is facilitated.
Further, before or after the process block is cut in step 7, the directly welded portion needs to be polished to remove burrs and burrs.
Further, the processing parameters of the heat treatment in step 12 are as follows: the solid solution temperature is 450-550 ℃, and the solid solution time is 1-1.5 hours.
Further, the aging parameters in step 13 are as follows: the aging temperature is 180 ℃ and 220 ℃; the heat treatment time is 8-10 hours.
Further, the machining step 14 is to polish the rim ring forming material and to machine bolt holes for connection and other accessory features to form a rim finished product.
Advantageous effects
Compared with the prior art, the preparation process of the high-strength two-piece type rim provided by the invention has the following beneficial effects:
(1) according to the technical scheme, the welding surface is cut into the inclined surface through the added step of cutting the welding surface, so that the engagement degree of the welding surface is increased, and the welding seam can be reduced; and the step of cutting the welding seam can remove burrs and sundries on the welding surface, increase the cleanliness of the welding surface, ensure that the degree of engagement between the welding material and the welding surface is higher, and effectively increase the strength of the welding seam part.
(2) The technical scheme adopts the process blocks during direct welding, and during welding, the starting point and the terminal of the welding are respectively arranged on the process blocks at the two ends of the welding line; the welding position in the welding seam is the middle part in the welding state, and the strength of the middle part of the welding is higher than that of the two ends of the welding. The process block is arranged, so that in the process of cutting the end face, only the deformed edge part caused by the compound circle needs to be cut, and the problem of strength in welding does not need to be considered; the width of the cutting end face is reduced, the recovery rate of waste materials is reduced, and the working efficiency is improved.
(3) According to the technical scheme, the rim work material with the T-shaped section is used for producing the rim, so that the process of processing the rim is reduced, the time for processing and producing the rim is shortened, the production efficiency is further improved, and meanwhile, the die equipment which is independently used for processing the T-shaped section is omitted, and the production cost is further reduced; on the other hand, the rim framework and the T-shaped strip are integrally formed, welding is not needed, and the condition that the wheel is tired and loses efficacy and air leakage caused by fatigue during running due to technical defects generated by welding of the rim framework and the T-shaped strip can be avoided.
(4) In the technical scheme, T-shaped grooves are formed in the rolling die, the flattening die, the rounding die, the flanging die and the spinning die around the axes of the rolling die, the flattening die, the rounding die, the flanging die and the spinning die; and the rolling die, the flattening die and the re-rounding die can be disassembled along the T-shaped groove, so that the rim can be conveniently demoulded.
Drawings
FIG. 1 is a schematic flow diagram of the present invention.
FIG. 2 is a schematic structural diagram of a plate obtained by cutting the plate in the step 1 of the present invention.
FIG. 3 is a schematic diagram of the structure of the plate obtained after step 2 of the present invention.
FIG. 4 is a schematic structural diagram of the ring-shaped blank obtained after step 5 of the present invention.
FIG. 5 is a schematic view of the structure of the ring-shaped formed material obtained after step 6 in the present invention.
FIG. 6 is a schematic view of the structure of the ring-shaped formed material obtained after step 9 of the present invention.
Fig. 7 is a schematic cross-sectional view of the rim obtained after step 14 of the present invention.
The labels in the figures are: 1-T-shaped section bar, 2-reserved edge, 3-welding surface, 4-welding seam and 5-process block.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some embodiments of the invention, not all embodiments. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and all of them should fall into the protection scope of the present invention.
Example 1:
as shown in fig. 1, a preparation process of a high-strength two-piece rim is characterized by comprising the following steps:
step 1: cutting a plate: and cutting the T-shaped section according to the size requirement of the used material for preparing a rim on the T-shaped section by using cutting equipment to obtain the work material for preparing the rim.
When the plate is cut, a reserved edge of 0.6-1.5 cm needs to be reserved on the basis of accurate size; as shown in fig. 2. The setting of reserving the limit can be when the later stage is carried out and is pressed flat and compound circle operation, after forming the border and warp, cuts away the reservation limit, guarantees the performance of rim.
Step 2: cutting a welding surface: after the long edge is cut, the two ends needing to be welded are cut, the oxide layer on the surface layer of the welded edge is removed, meanwhile, the welding surface is cut into an inclined plane, and the included angle formed by the inclined plane and the horizontal line is 3-15 degrees.
As shown in fig. 3, the bevels are oppositely disposed after cutting, and the two bevels are engaged after the rolling operation. The welding surface is cut into the inclined surface, so that the degree of fit of the welding surface is increased, the welding line can be reduced, and the welding strength is ensured.
And step 3: rolling: utilizing a rolling die and a rolling machine to roll the cut work material to form an annular blank; when the rolling is carried out, the mould on the rolling equipment can be replaced according to the size required by production.
The work material with the T-bar is subjected to a rolling process to form an initial annular shape for welding and seaming the two ends. In this process, since the T-shaped bar is added, the rolling device used in the rolling step includes a rolling die; and the rounding die is provided with a T-shaped rounding groove around the axis thereof. Therefore, with the aid of the T-shaped rounding groove, the T-shaped strip structure can smoothly complete the rounding process together with the rim plate.
And 4, step 4: flattening: and flattening the gap of the annular blank by using a flattening die and flattening equipment, and pressing the plates at two ends of the gap into a plane shape parallel to the horizontal plane.
In order to weld and sew the two ends of the ring-shaped blank after being rolled, the two welded ends need to be processed before welding, namely, being flattened to form a plane for welding. In the step, the structure of the T-shaped strip is also considered, and the flattening device used in the flattening step comprises a flattening die; the flattening die is provided with a T-shaped flattening groove.
And 5: cutting a welding seam: cutting two edges to be welded into straight edges by using automatic aluminum cutting equipment, and cutting the two fitted end faces into smooth planes; as shown in fig. 4.
Can get rid of burr and debris on the face of weld, increase the cleanliness of face of weld for the degree of agreeing with of welding material and face of weld is higher, intensity that can effectual increase welding seam position.
Step 6: direct welding: welding two ends together by friction stir welding of a welding edge which is cut into straight lines to form an annular formed material; before the straight welding, the process blocks are respectively fixed at the two ends of the welding seam through two clamps on the welding equipment, and the starting point and the terminal of the welding are respectively arranged on the process blocks at the two ends of the welding seam during the welding.
The welding position in the welding seam is the middle part in the welding state, and the strength of the middle part of the welding is higher than that of the two ends of the welding. The process block is arranged, so that only the deformed edge part caused by the compound circle needs to be cut in the end face cutting process, and the problem of strength in welding does not need to be considered; the width of the cutting end face is reduced, the recovery rate of waste materials is reduced, and the working efficiency is improved.
And 7: removing the process blocks: and cutting off the process block by using a cutting device.
In addition, it should be noted that after welding, some impurities affecting the welding surface and the welding area are formed, so in order to ensure the effect of subsequent rounding, after the process block is cut off, the directly welded portion needs to be polished to remove burrs and burrs. And the ring forming material is subjected to shaping treatment after welding.
And 8: rounding: a rounding die and rounding equipment are utilized to carry out rounding on the welding position of the annular formed material, and the flattened part of the welding position is rounded to form a complete rim ring blank; and (4) shaping the ring forming material after welding.
After welding and sewing, the whole annular structure is not formed into an annular structure with a curvature meeting the requirement, which is mainly influenced by the welding position, so that the annular structure needs to be subjected to a process of rounding. Likewise, due to the presence of the T-bar structure, the structure of the mold needs to be considered: the circle restoring device used in the circle restoring step comprises a circle restoring die; the compound circular die is provided with a T-shaped compound circular groove.
And step 9: end face cutting: and cutting off reserved edges on two sides of the rim ring blank by using end face cutting equipment.
After the rounding is finished, the excess materials at two ends of the rim ring blank are cut off due to the fact that the material deforms and has certain size change and edge deformation. Thus, the manufactured rim structure can be ensured to be uniform.
Step 10: flanging, namely flanging the two ends of the rim ring blank by utilizing a flanging die and flanging equipment to form a flanged ring blank;
the edge of the rim ring blank is cut off and then flanged, so that the strength of the edge can be ensured, and the effect of stress concentration is weakened. Considering the existence of the T-shaped strip structure, the flanging device used in the flanging step comprises a flanging die; the flanging die is provided with a T-shaped flanging groove.
Step 11: spinning, namely spinning the flanged ring blank by using a spinning die and spinning equipment to form a rim ring forming material;
and carrying out final molding treatment on the flanging ring blank to form a rim ring forming material. Considering the existence of the T-shaped strip structure, the spinning device used in the spinning step comprises a spinning die; the spinning die is provided with a T-shaped spinning groove.
Step 12: and (3) heat treatment: carrying out heat treatment processing on the rim ring forming material; the processing parameters of the heat treatment are as follows: the solid solution temperature is 450-550 ℃, and the solid solution time is 1-1.5 hours.
The temperature and the time of the heat treatment are independently adjusted according to the section bar for manufacturing the high-strength rim, and the temperature, the temperature and the time completely meet the thickness and the width required by the rim, so that the material performance is improved in the heat treatment process.
Step 13: aging: carrying out aging processing on the rim ring formed material subjected to the heat treatment processing; the parameters of the aging processing are as follows: the aging temperature is 180 ℃ and 220 ℃; the heat treatment time is 8-10 hours.
The temperature and time of aging are adjusted separately for the section bar for manufacturing the high-strength rim, and the temperature, the temperature and the time are completely in line with the thickness and the width of the rim, so that the material performance is improved in the aging process.
Step 14: machining: and machining the annular formed material of the rim subjected to the aging processing to form the rim. Machining the rim ring forming material is to machine the rim ring forming material, and machining bolt holes for connection and other accessory characteristics to form a rim finished product. The finished rim structure is shown in figure 7.
The rolling die in the step 3, the flattening die in the step 4, the rounding die in the step 7, the flanging die in the step 10 and the spinning die in the step 11 are provided with T-shaped grooves around the axes thereof; and the edge rolling die, the flattening die and the rounding die can be disassembled along the T-shaped groove, so that the rim demoulding is facilitated.
Grouping experiments were performed, among others. The group A is 5 rims produced by the process disclosed by the patent in the background technology, the group B is 5 rims produced by the manufacturing process of the rim, the compression tests are carried out under different pressures, and the test results are shown in the following table I;
testing an instrument: the wheel rim roundness detection adopts a compression impact testing machine produced by Tianjin Jiuling, the model is ITM-4, and the testing conditions are as follows: and (5) carrying out 13-degree bare punching.
TABLE 1
As can be seen from the data in table 1, the rim manufactured by the manufacturing process of the rim according to the present invention is stronger than the rim manufactured by the process disclosed in the patent publication in the background art.
Claims (8)
1. A preparation process of a high-strength two-piece type wheel rim is characterized by comprising the following steps:
step 1: cutting a plate: cutting the T-shaped section according to the size requirement by using cutting equipment to obtain a work material for preparing the rim;
step 2: cutting a welding surface: after the long edge is cut, cutting two ends to be welded, and simultaneously cutting a welding surface into inclined planes, wherein an included angle formed between each inclined plane and a horizontal line is 3-15 degrees;
and step 3: rolling: utilizing a rolling die and a rolling machine to roll the cut work material to form an annular blank; when the rolling is carried out, the mould on the rolling equipment can be replaced according to the size required by production;
and 4, step 4: flattening: flattening the gap of the annular blank by using a flattening die and flattening equipment, and pressing the plates at two ends of the gap into a plane shape parallel to the horizontal plane;
and 5: cutting a welding seam: cutting two edges to be welded into straight edges by utilizing automatic aluminum plate cutting equipment, and cutting the two fitted end faces into smooth planes;
and 6: direct welding: welding the two welding edges together to form an annular formed material; before direct welding, the process blocks are respectively fixed at two ends of a welding line through two clamps on welding equipment, and a welding starting point and a welding terminal are respectively arranged on the process blocks at the two ends of the welding line during welding;
and 7: removing the process blocks: cutting off the process blocks by using cutting equipment;
and 8: rounding: a rounding die and rounding equipment are utilized to carry out rounding on the welding position of the annular formed material, and the flattened part of the welding position is rounded to form a complete rim ring blank; shaping the ring-shaped formed material after welding;
and step 9: end face cutting: cutting off reserved edges on two sides of a rim ring blank by using end face cutting equipment to ensure the precision of the blank size;
step 10: flanging, namely flanging the two ends of the rim ring blank by utilizing a flanging die and flanging equipment to form a flanged ring blank; thereby forming the shape of a turned edge on two sides of the rim and enhancing the shock resistance of the rim;
step 11: spinning, namely spinning the flanged ring blank by using a spinning die and spinning equipment to form a rim ring forming material; different moulds can be replaced to form different rim shapes;
step 12: and (3) heat treatment: carrying out heat treatment processing on the rim ring forming material;
step 13: aging: carrying out aging processing on the rim ring formed material subjected to the heat treatment processing;
step 14: machining: and machining the annular formed material of the rim subjected to the aging processing to form the rim.
2. The process for preparing a high-strength two-piece wheel rim according to claim 1, wherein: when the plate cutting operation in the step 1 is carried out, a reserved edge of 0.6-1.5 cm needs to be reserved on the basis of accurate size.
3. The process for preparing a high-strength two-piece wheel rim according to claim 1, wherein: the inclined planes in the step 2 are oppositely arranged, and after the rolling operation, the two inclined planes are mutually matched.
4. The process for preparing a high-strength two-piece wheel rim according to claim 1, wherein: the rolling die in the step 3, the flattening die in the step 4, the rounding die in the step 7, the flanging die in the step 10 and the spinning die in the step 11 are provided with T-shaped grooves around the axes thereof; and the rolling grinding tool, the flattening grinding tool and the rounding die can be disassembled along the T-shaped groove, so that the rim can be conveniently demoulded.
5. The process for preparing a high-strength two-piece wheel rim according to claim 1, wherein: before or after the process block is cut off in step 7, the directly welded part needs to be polished to remove burrs and rough edges.
6. The process for preparing a high-strength two-piece wheel rim according to claim 1, wherein: the processing parameters of the heat treatment in the step 12 are as follows: the solid solution temperature is 450-550 ℃, and the solid solution time is 1-1.5 hours.
7. The process for preparing a high-strength two-piece wheel rim according to claim 1, wherein: step 13, the aging parameters are as follows: the aging temperature is 180 ℃ and 220 ℃; the heat treatment time is 8-10 hours.
8. The process for preparing a high-strength two-piece wheel rim according to claim 1, wherein: and step 14, machining the rim ring forming material, namely machining the rim ring forming material, and machining bolt holes for connection and other accessory characteristics to form a rim finished product.
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| CN202210856561.6A CN115041930A (en) | 2022-07-21 | 2022-07-21 | Preparation process of high-strength two-piece type wheel rim |
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| CN202210856561.6A CN115041930A (en) | 2022-07-21 | 2022-07-21 | Preparation process of high-strength two-piece type wheel rim |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3570295A (en) * | 1967-10-21 | 1971-03-16 | Nippon Kokan Kk | Skelp wedge forming method and device for forge welded steel tube |
| CN1074845A (en) * | 1992-01-27 | 1993-08-04 | 江西轻工业机械厂 | Thin plate rolls the docking calculation and the device thereof of tank body longitudinal joint butt welding |
| JPH0947887A (en) * | 1995-08-04 | 1997-02-18 | Tokai Rubber Ind Ltd | Manufacture of tubular seaming fixture |
| CN1662342A (en) * | 2002-04-16 | 2005-08-31 | 本田技研工业株式会社 | Method of manufacturing annular body |
| CN114393375A (en) * | 2022-01-14 | 2022-04-26 | 重庆市超群工业股份有限公司 | Process method for manufacturing two-piece type lock pin wheel rim by utilizing T-shaped section |
-
2022
- 2022-07-21 CN CN202210856561.6A patent/CN115041930A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3570295A (en) * | 1967-10-21 | 1971-03-16 | Nippon Kokan Kk | Skelp wedge forming method and device for forge welded steel tube |
| CN1074845A (en) * | 1992-01-27 | 1993-08-04 | 江西轻工业机械厂 | Thin plate rolls the docking calculation and the device thereof of tank body longitudinal joint butt welding |
| JPH0947887A (en) * | 1995-08-04 | 1997-02-18 | Tokai Rubber Ind Ltd | Manufacture of tubular seaming fixture |
| CN1662342A (en) * | 2002-04-16 | 2005-08-31 | 本田技研工业株式会社 | Method of manufacturing annular body |
| CN114393375A (en) * | 2022-01-14 | 2022-04-26 | 重庆市超群工业股份有限公司 | Process method for manufacturing two-piece type lock pin wheel rim by utilizing T-shaped section |
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