CN112058952A - Split type shape correcting tool for inner weld joint box-shaped piece - Google Patents
Split type shape correcting tool for inner weld joint box-shaped piece Download PDFInfo
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- CN112058952A CN112058952A CN202010688658.1A CN202010688658A CN112058952A CN 112058952 A CN112058952 A CN 112058952A CN 202010688658 A CN202010688658 A CN 202010688658A CN 112058952 A CN112058952 A CN 112058952A
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- expansion
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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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/06—Removing local distortions
- B21D1/08—Removing local distortions of hollow bodies made from sheet metal
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Abstract
The invention discloses a split type shape correcting tool for an inner weld joint box-shaped piece, which comprises an expansion conical shaft, wherein at least two split expansion pieces are spliced around the expansion conical shaft in a sliding manner, one side of the split expansion piece spliced with the expansion conical shaft, which corresponds to the conical surface of the expansion conical shaft, is provided with a conical groove, and the expansion conical shaft pushes the split expansion pieces to expand outwards through axial movement to perform expansion; the adjacent split bulging pieces are connected through a guide connecting piece; the method has the advantages that synchronous bulging calibration is synchronously and efficiently carried out on the inner side wall, the top end surface of the inner side and the fillet of the box-shaped part, the appearance calibration efficiency and the calibration quality of the box-shaped part are greatly improved, and the manufacturing period is effectively shortened.
Description
Technical Field
The invention belongs to the technical field of sheet metal part shape correcting tools, and particularly relates to a split type shape correcting tool for an inner weld joint box-shaped part.
Background
For the large-depth box-shaped part exceeding the deep drawing forming limit, a box-shaped bottom part with proper depth is generally manufactured by adopting a deep drawing forming mode, and then the box-shaped bottom part is manufactured by welding a side wall. The box-shaped part is welded from the inside, and the welding line is arranged on the inner wall, so that the pneumatic appearance and visual attractiveness of the part can be ensured to the greatest extent, but the subsequent shape correction work is difficult due to the characteristics of large welding deformation and quick natural aging of the aluminum alloy. The existing solution is to correct the welded side wall by a correction die, and the box-shaped bottom is locally corrected by using 1/4-1/3 bottom profile correction die segments. The scheme has good correction effect on the side wall, but obvious unsmooth correction marks exist on the bottom surface of the box-shaped bottom and the rounded corners, and the chamfer angle is measured by a measuring card, so that large out-of-tolerance exists, and the change is not uniform; the aluminum alloy has fast natural aging and short optimal shape correction time, and the scheme consumes a great deal of time for correcting the box-shaped bottom and often cannot reach the optimal state.
The invention discloses a split type shape correcting tool for an inner welding seam box-shaped piece, aiming at the defect that the traditional shape expanding effect of the end face of the inner wall of the box-shaped piece and a rounding angle is not ideal through a correcting die.
Disclosure of Invention
The invention aims to provide a split type shape correcting tool for an inner weld joint box-shaped piece, which can realize synchronous and efficient bulging of the side wall, the end face and the fillet of the box-shaped piece and effectively ensure the shape correcting effect of the box-shaped piece.
The invention is realized by the following technical scheme:
a split type shape correcting tool for an inner weld joint box-shaped piece comprises an expansion conical shaft, wherein at least two split expansion pieces are spliced around the expansion conical shaft in a sliding mode, a conical groove is formed in one side, spliced with the expansion conical shaft, of each split expansion piece and corresponds to the conical surface of the expansion conical shaft, and the expansion conical shaft pushes the split expansion pieces to expand outwards through axial movement to perform expansion; the adjacent split bulging pieces are connected through the guide connecting piece.
The split bulging pieces are in two states, namely a closed state when the split bulging pieces are not bulged and an open state when the split bulging pieces are bulged, when the split bulging pieces are in the closed state, the expanding conical shaft positioned in the center of the split bulging pieces does not move upwards along the axial direction, namely the conical surface of the expanding core conical shaft does not extrude the conical groove on one side of the split bulging pieces, the outer contours of the split bulging pieces in the closed state are smaller than the inner contour of the box piece, and the inner contour of the box piece is not extruded; when the inner contour of the box-shaped element needs to be expanded, the assembled expanding conical shaft and the split expanding elements which are in a folded state are placed into an inner cavity of the box-shaped element, then the expanding conical shaft is upwards pushed along the axial direction of the expanding conical shaft through a manual or external driving mechanism, the conical surface of the expanding conical shaft extrudes the conical groove on one side of the split expanding elements, and then the split expanding elements are forced to synchronously expand towards the direction close to the inner wall of the box-shaped element until the expanding surface of the split expanding element is contacted with the inner wall of the box-shaped element and extrudes the inner wall of the box-shaped element, and the synchronous expansion of the inner wall of the box-shaped element is realized.
In order to better implement the invention, a limiting piece extending into a conical groove on the side surface of the split expansion piece is further arranged on the bottom side surface of the expansion cone shaft.
When the bulging cone shaft moves upwards along the axial direction, the limiting part slides upwards in the tapered groove on one side of the split bulging part along the axial direction along with the movement of the bulging cone shaft, and the width of the tapered groove is gradually reduced from bottom to top, so that when the limiting part slides upwards until the width of the tapered groove is smaller than that of the limiting part, the limiting part is clamped by the tapered groove and cannot continue to slide upwards, and further the bulging cone shaft cannot continue to move upwards, and the movement of the bulging cone shaft is limited.
In order to better realize the invention, four split expansion pieces are slidably spliced around the expansion cone shaft, and the guide connecting surfaces of the adjacent split expansion pieces are connected through guide pins.
In order to better implement the invention, further, the guide connecting piece is a guide pin, and a guide inserting hole or a kidney-shaped groove is formed in the guide connecting surface of the split expanded-type piece corresponding to the guide pin.
In order to better implement the present invention, further, the guide pin includes a first guide pin and a second guide pin having the same diameter, the first guide pin and the second guide pin are coaxially disposed, and one end of the first guide pin and one end of the second guide pin are coaxially connected through a step.
In order to better implement the present invention, further, the diameter tolerance of the first guide pin is r6, and the diameter tolerance of the second guide pin is f 7.
In order to better implement the invention, further, a weld avoiding groove is arranged on the top side surface of the split expansion piece corresponding to the weld on the inner surface of the box-shaped piece.
In order to better implement the invention, a lightening hole and a grasping hole are further arranged on the side surface of the split expansion piece far away from the expansion taper shaft.
In order to better realize the invention, the bulging conical shaft further comprises a conical shaft section and a cylindrical section which are sequentially and coaxially connected from top to bottom, and a limiting part is arranged on one side of the bottom of the conical shaft section.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, the bulging conical shaft is pushed, so that the split bulging pieces around the bulging conical shaft are synchronously extruded, and then the split bulging pieces are synchronously driven to carry out efficient and synchronous bulging calibration on the inner side wall, the inner side top end surface and the fillet of the box-shaped piece, so that the bulging calibration on the box-shaped piece can be realized in a short time, the correction efficiency and the correction quality on the box-shaped piece are greatly improved, the manufacturing period is effectively shortened, and the qualification rate of the box-shaped piece is improved.
Drawings
FIG. 1 is a schematic view of a split expander in an expanded state;
FIG. 2 is a schematic view of the split expander in a closed position;
FIG. 3 is a schematic view of the installation of the expanding cone shaft and the split expander;
FIG. 4 is a schematic view of a fourth inflatable member;
fig. 5 is a schematic structural view of the guide pin.
Wherein: 1-a split inflatable; 2-a limiting member; 3-bulging conical shaft; 4-a guide pin; 01-a first inflatable member; 02-a second inflatable; 03-a third inflatable; 04-fourth inflatable.
Detailed Description
Example 1:
the split type shape correcting tool for the inner weld joint box-shaped piece comprises an expansion conical shaft 3, at least two split expansion pieces 1 are spliced around the expansion conical shaft 3 in a sliding mode, a conical groove is formed in one side, spliced with the expansion conical shaft 3, of each split expansion piece 1 corresponding to the conical surface of the expansion conical shaft 3, and the expansion conical shaft 3 pushes the split expansion pieces 1 to expand outwards through axial movement to perform expansion; the adjacent split bulging pieces 1 are connected through a guide connecting piece.
One side that components of a whole that can function independently bulging piece 1 is close to bulging taper shaft 3 is the pressurized side, and the top surface of components of a whole that can function independently bulging piece 1 and the one side that is close to the box inner wall are the bulging side, and the edge of the top surface of components of a whole that can function independently bulging piece 1 is provided with the fillet of bulging and is used for carrying out the bulging to the interior fillet at box inner wall top edge. The outer contour of the bulging side is arranged corresponding to the inner contour of the box-shaped element. The axial line of the bulging conical shaft 3 which is vertically arranged is used as an axis, and at least two split bulging pieces 1 are uniformly arranged on the side surface of the bulging conical shaft 3 along the circumferential direction.
The diameter of the bulging conical shaft 3 is gradually increased from top to bottom, and a conical groove is formed in the pressure-bearing side of the split bulging piece 1 corresponding to the conical surface of the bulging conical shaft 3. When the bulging operation is not needed, the conical surface of the bulging conical shaft 3 is only attached to the groove surface of the conical groove of the split bulging pieces 1 but does not extrude the conical groove, at the moment, the split bulging pieces 1 are in a furled state, and the distance between the outer contour formed by the bulging sides of the split bulging pieces 1 and the inner contour of the box-shaped piece is 5 mm; when the bulging operation is needed, the split bulging pieces 1 and the bulging conical shafts 3 which are assembled and are in a furled state are placed in inner cavities of the box-shaped pieces, then vertical upward thrust is applied to the bottoms of the bulging conical shafts 3 through external manpower or a driving device, then the bulging conical shafts 3 are driven to slide upwards relative to the split bulging pieces 1, the conical surfaces of the bulging conical shafts 3 extrude conical grooves of the split bulging pieces 1, then a plurality of split bulging pieces 1 around the bulging conical shafts 3 are forced to synchronously expand towards the inner walls of the box-shaped pieces, and until the bulging sides of the split bulging pieces 1 are attached to the inner walls of the box-shaped pieces and extrude the inner walls of the box-shaped pieces, so that the rapid synchronous bulging of the inner walls of the box-shaped pieces is realized, the bulging precision is effectively guaranteed, and the bulging efficiency is improved.
Example 2:
the present embodiment is further optimized based on embodiment 1, as shown in fig. 1-3, a limiting member 2 extending into a tapered groove on the side of the split expansion piece 1 is disposed on the bottom side of the expansion cone shaft 3.
The width of the limiting piece 2 is between the maximum width and the minimum width of the tapered slot, the limiting piece 2 extends into the tapered slot on the split expansion piece 1, and when the expansion tapered shaft 3 does not move upwards, the limiting piece 2 is located at the bottom of the tapered slot; when bulging awl axle 3 during rebound under the effect of external force, locating part 2 slides along the bell jar along with bulging awl axle 3 upwards, slide to the position that the width of bell jar is less than the width of locating part 2 until locating part 2, locating part 2 receives the restriction of bell jar can not continue to slide this moment, and then make bulging awl axle 3 can not continue the rebound, it is spacing to the removal of bulging awl axle 3 to realize, avoid bulging awl axle 3 to slide the bell jar that leads to excessive extrusion components of a whole that can function independently bloated 1 upwards, effectively avoid the bell jar to warp the damage.
Further, the bulging conical shaft 3 comprises a conical shaft section and a cylindrical section which are sequentially and coaxially connected from top to bottom, the diameter of the conical shaft section is increased from top to bottom, the diameter of the bottom end of the conical shaft section is equal to that of the cylindrical section, and the bottom end of the conical shaft section is welded with the top of the cylindrical section. And the bottom of the cylindrical section is provided with a connecting bayonet or a connecting threaded hole for connecting with the driving end of an external driving device. One side of the bottom of the conical shaft section is provided with a mounting threaded hole, and one end of the limiting part 2 is provided with an external thread corresponding to the mounting threaded hole and is screwed in the mounting threaded hole.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
the present embodiment is further optimized based on the above embodiment 1 or 2, as shown in fig. 1 and fig. 2, four split expanders 1 are slidably fitted around the expansion cone shaft 3, and the guide connecting surfaces of adjacent split expanders 1 are connected by guide pins 4.
The four split expansion pieces 1 are respectively a first expansion piece 01, a second expansion piece 02, a third expansion piece 03 and a fourth expansion piece 04, the first expansion piece 01, the second expansion piece 02, the third expansion piece 03 and the fourth expansion piece 04 are of a square column-shaped hollow structure, the two mutually perpendicular end faces of the first expansion piece 01, the second expansion piece 02, the third expansion piece 03 and the fourth expansion piece 04 close to the inner wall of the box-shaped piece are expansion faces, the two mutually perpendicular end faces of the first expansion piece 01, the second expansion piece 02, the third expansion piece 03 and the fourth expansion piece 04 close to the expansion conical shaft 3 are compression faces, and conical grooves are formed in the junction of the two compression faces corresponding to the expansion conical shaft 3.
As shown in fig. 4, guide holes are respectively arranged at corresponding positions on two compression surfaces of the first expansion element 01, two compression surfaces of the second expansion element 02 and two compression surfaces of the third expansion element 03, a guide pin 4 is inserted between two adjacent guide holes in a sliding manner, kidney-shaped grooves are arranged on two compression surfaces of the fourth expansion element 04 corresponding to the guide pins 4, and one end of the guide pin 4 is inserted in the kidney-shaped grooves in a sliding manner.
First bloated piece 01, second bloated piece 02, third bloated piece 03, fourth bloated piece 04 receive the extrusion of bloated shape awl axle 3 when opening in step, and guide pin 4 slides along guiding hole axial displacement or along the kidney slot, leads first bloated piece 01, the bloated piece 02 of second, the bloated piece 03 of third, the synchronous expansion of fourth bloated piece 04, simultaneously because guide pin 4 slides along the kidney slot, can avoid first bloated piece 01, the bloated piece 02 of second, the bloated piece 03 of third, the synchronous expansion of fourth bloated piece 04 in the time of the card pause.
The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.
Example 4:
this embodiment is further optimized on the basis of any one of the above embodiments 1 to 3, and as shown in fig. 5, the guide pin 4 includes a first guide pin and a second guide pin having the same diameter, the first guide pin and the second guide pin are coaxially disposed, and one end of the first guide pin and one end of the second guide pin are coaxially connected through a step.
The first guide pin is inserted into a guide hole or a kidney-shaped groove on the pressure-receiving surface of the previous split expansion-shaped piece 1, the second guide pin is inserted into a guide hole or a kidney-shaped groove on the pressure-receiving surface of the next split expansion-shaped piece 1, and when the adjacent split expansion-shaped pieces 1 are expanded and kept away, the first guide pin and the second guide pin slide along the guide hole or the kidney-shaped groove to guide the expansion of the split expansion-shaped pieces 1.
The diameter of the first guide pin is 20mm, and the tolerance is r 6; the diameter of the second guide pin is 20mm with a tolerance f 7; the diameter of the guide hole on the pressure receiving surface of the split inflatable member 1 is 20mm with a tolerance of H7. The guiding hole carries out interference fit with first uide pin promptly, and the guiding hole carries out clearance fit with the second uide pin, through interference fit and clearance fit's matching for the direction when uide pin 4 expands to the components of a whole that can function independently bloated piece 1 is more smooth-going.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
this embodiment is further optimized on the basis of any one of the above embodiments 1 to 4, and the welding seam avoiding groove is formed on the side surface of the top of the split expansion piece 1 corresponding to the welding seam on the inner surface of the box-shaped piece.
In order to avoid the extrusion damage of the bulging surface of the split bulging piece 1 to the welding line on the inner wall of the box-shaped piece, a welding line avoiding groove is formed in the side face of the top of the split bulging piece 1 corresponding to the welding line on the inner surface of the box-shaped piece, and the welding line is effectively prevented from being extruded during bulging.
The side face, far away from the bulging taper shaft 3, of the split bulging piece 1 is provided with a lightening hole and a gripping hole, the lightening hole is used for lightening the self weight of the split bulging piece 1, the gripping hole corresponds to the gripping end of external gripping equipment, and the external gripping equipment can rapidly grip the split bulging piece 1 through the gripping hole.
Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (9)
1. The split type shape correcting tool for the inner weld joint box-shaped piece is characterized by comprising an expansion conical shaft (3), wherein at least two split expansion pieces (1) are spliced around the expansion conical shaft (3) in a sliding manner, a conical groove is formed in one side, spliced, of the split expansion piece (1) and the expansion conical shaft (3), corresponding to the conical surface of the expansion conical shaft (3), and the expansion conical shaft (3) pushes the split expansion piece (1) to be expanded outwards through axial movement to perform expansion; the adjacent split expansion pieces (1) are connected through a guide connecting piece.
2. The split type sizing tool for the internal weld joint box-shaped piece according to claim 1, characterized in that a limiting piece (2) extending into a conical groove on the side surface of the split expansion-shaped piece (1) is arranged on the bottom side surface of the expansion-shaped conical shaft (3).
3. The split type sizing tool for the box-shaped internal weld joint as claimed in claim 1 or 2, wherein four split expansion pieces (1) are slidably spliced around the expansion cone shaft (3), and the guide connecting surfaces of the adjacent split expansion pieces (1) are connected through guide pins (4).
4. The split type shape correcting tool for the internal weld joint box-shaped piece according to claim 3, wherein the guide connecting piece is a guide pin (4), and a guide inserting hole or a kidney-shaped groove is formed in the guide connecting surface of the split type expansion-shaped piece (1) corresponding to the guide pin (4).
5. The split type sizing tool for the inner weld joint box-shaped piece according to claim 3, wherein the guide pin (4) comprises a first guide pin and a second guide pin which are equal in diameter, the first guide pin and the second guide pin are coaxially arranged, and one ends of the first guide pin and the second guide pin are coaxially connected through a step.
6. The split sizing tool for an inside welded joint box according to claim 5, wherein the diameter tolerance of the first guide pin is r6, and the diameter tolerance of the second guide pin is f 7.
7. The split type sizing tool for the box-shaped part with the inner weld joint according to claim 1 or 2, characterized in that a weld joint avoiding groove is formed in the side face of the top of the split expansion-shaped part (1) corresponding to the weld joint on the inner surface of the box-shaped part.
8. The split type sizing tool for the box-shaped internal welding seam according to claim 1 or 2, characterized in that a side of the split expansion piece (1) far away from the expansion taper shaft (3) is provided with a lightening hole and a gripping hole.
9. The split type shape correcting tool for the inner weld joint box-shaped piece according to claim 1, wherein the bulging conical shaft (3) comprises a conical shaft section and a cylindrical section which are coaxially connected in sequence from top to bottom, and a limiting piece (2) is arranged on one side of the bottom of the conical shaft section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688658.1A CN112058952A (en) | 2020-07-16 | 2020-07-16 | Split type shape correcting tool for inner weld joint box-shaped piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688658.1A CN112058952A (en) | 2020-07-16 | 2020-07-16 | Split type shape correcting tool for inner weld joint box-shaped piece |
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| CN112058952A true CN112058952A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010688658.1A Pending CN112058952A (en) | 2020-07-16 | 2020-07-16 | Split type shape correcting tool for inner weld joint box-shaped piece |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07290170A (en) * | 1994-04-22 | 1995-11-07 | Sumitomo Metal Ind Ltd | Head for mechanical pipe expander |
| CN201659175U (en) * | 2010-03-23 | 2010-12-01 | 泉州腾达精铸有限公司 | Shaping device of cast workpiece |
| CN201807634U (en) * | 2010-09-17 | 2011-04-27 | 诸城市大业金属制品有限责任公司 | Expansion cylinder device |
| JP2011167710A (en) * | 2010-02-17 | 2011-09-01 | Jfe Steel Corp | Method of preventing bend when expanding uoe steel pipe |
| CN202667335U (en) * | 2012-07-02 | 2013-01-16 | 天津方世车业有限公司 | Expanding tire device for magnetic steel hub |
| CN103920752A (en) * | 2014-04-03 | 2014-07-16 | 北京星航机电装备有限公司 | Sectioning thermal expansion shape correcting method for special-shaped variable-cross-section titanium alloy tube parts |
| CN207981900U (en) * | 2018-01-05 | 2018-10-19 | 常州市大森机械有限公司 | Rise mould machine |
| CN109047392A (en) * | 2018-09-25 | 2018-12-21 | 武汉理工大学 | High temperature alloy casing ring forging stress homogenization process |
| CN109127905A (en) * | 2018-07-27 | 2019-01-04 | 西安长峰机电研究所 | A kind of spreading formula corrector of thin-wall tube-shaped element |
-
2020
- 2020-07-16 CN CN202010688658.1A patent/CN112058952A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07290170A (en) * | 1994-04-22 | 1995-11-07 | Sumitomo Metal Ind Ltd | Head for mechanical pipe expander |
| JP2011167710A (en) * | 2010-02-17 | 2011-09-01 | Jfe Steel Corp | Method of preventing bend when expanding uoe steel pipe |
| CN201659175U (en) * | 2010-03-23 | 2010-12-01 | 泉州腾达精铸有限公司 | Shaping device of cast workpiece |
| CN201807634U (en) * | 2010-09-17 | 2011-04-27 | 诸城市大业金属制品有限责任公司 | Expansion cylinder device |
| CN202667335U (en) * | 2012-07-02 | 2013-01-16 | 天津方世车业有限公司 | Expanding tire device for magnetic steel hub |
| CN103920752A (en) * | 2014-04-03 | 2014-07-16 | 北京星航机电装备有限公司 | Sectioning thermal expansion shape correcting method for special-shaped variable-cross-section titanium alloy tube parts |
| CN207981900U (en) * | 2018-01-05 | 2018-10-19 | 常州市大森机械有限公司 | Rise mould machine |
| CN109127905A (en) * | 2018-07-27 | 2019-01-04 | 西安长峰机电研究所 | A kind of spreading formula corrector of thin-wall tube-shaped element |
| CN109047392A (en) * | 2018-09-25 | 2018-12-21 | 武汉理工大学 | High temperature alloy casing ring forging stress homogenization process |
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Application publication date: 20201211 |