CN110788164B - Using method of manual shape correction die - Google Patents
Using method of manual shape correction die Download PDFInfo
- Publication number
- CN110788164B CN110788164B CN201911145846.3A CN201911145846A CN110788164B CN 110788164 B CN110788164 B CN 110788164B CN 201911145846 A CN201911145846 A CN 201911145846A CN 110788164 B CN110788164 B CN 110788164B
- Authority
- CN
- China
- Prior art keywords
- sheet metal
- die
- bending deformation
- metal part
- male die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The application provides a using method of a manual shape correcting die, wherein the manual shape correcting die comprises a convex die part, a concave die part, a die carrier, a connecting seat and a connecting device; by sleeving the sheet metal part into the male die part and applying a first external force to enable the male die forming part to make a first rotary motion relative to the female die forming groove, the first external force can vertically transmit an external acting force required by stamping to a bending deformation area of the sheet metal part through the first rotary motion, so that correction interference caused by the structure of the sheet metal part is avoided, and generation of horizontal component force is also avoided; and a series of good technical effects of improving the production efficiency, reducing the production cost, increasing the safety coefficient, further improving the product qualification rate, eliminating the noise pollution and the like are further generated, and the method is very worthy of being popularized in actual production.
Description
Technical Field
The invention relates to the field of stamping, in particular to a using method of a manual sizing die.
Background
The stamping process is to form sheet metal parts in required shapes from sheet metal blanks, sectional materials or pipes and the like according to the curvature or angle of design requirements, and due to the material structure characteristics of the sheet metal parts, after the sheet metal parts are initially stamped and formed, the sheet metal parts often generate a rebound phenomenon, so that the sheet metal parts do not completely meet the design requirements, and therefore in order to eliminate the rebound, the sheet metal parts stamped and formed in the previous working procedure need to be subjected to secondary shape correction or even multiple shape correction.
However, for some sheet metal parts with special shapes, such as sheet metal parts with sealing structures like square shapes and barrel shapes, due to the structural characteristics of the sealing sheet metal parts, the shape correction in the prior art is performed in a mode that the special-shaped ejector block and the hammer are matched, an operator holds the special-shaped ejector block by one hand and extends into the sheet metal part from the side surface at a certain angle, and another hand holds the hammer to perform oblique knocking on the special-shaped ejector block, and the shape correction mode can make a huge sound during knocking, so that noise pollution is formed, the operator is very easy to generate operation fatigue, and production accidents are caused; more importantly, the shape correcting mode ensures that the external acting force required by shape correction cannot be vertically transferred to the bending deformation area of the sheet metal part;
the external acting force is decomposed into a vertical component and a horizontal component due to the existing angle relationship, and only the vertical component is used for correcting, so that correction can be realized only by providing larger external force by an operator, and the labor intensity is increased;
when the generated horizontal component force acts on the sheet metal part, the sheet metal part cannot be effectively positioned, the sheet metal part is easy to deform, the curvature and the angle change are easy to occur again in the bending deformation area of other positions of the sheet metal part, the bending deformation area is subjected to shape correction, an operator needs to repeatedly correct the bending deformation area, and the production efficiency is greatly reduced;
the shape correction is carried out in an oblique knocking mode, so that misoperation is easily caused, for example, the abnormal-shaped jacking block slips or the knocking position of the hammer is not correct, the sheet metal part is scrapped, an operator is injured to cause safety accidents, and the production yield and the operation safety coefficient are influenced;
meanwhile, in order to avoid causing angle changes of other bending deformation areas during correction, an operator must accurately control the angle of an external acting force and the magnitude of the external acting force by means of production experience accumulation and self operating skills, so that the vertical component force reaches a shape correction effect, and meanwhile, the horizontal component force cannot deform a sheet metal part, and the requirement on the operating skill of the operator is invisibly improved (only a technician-level worker with a certain production age can perform the shape correction work in actual operation, and a apprentice-level worker with an insufficient production age cannot perform the shape correction work), so that the production cost is increased, and higher production efficiency cannot be guaranteed;
in summary, for the sealing sheet metal part, how to avoid shape correction interference caused by the structure of the sealing sheet metal part, the external acting force required for shape correction can vertically act on the shape correction position, and the generation of horizontal component force is avoided, so that a series of problems that the production efficiency is reduced, the production cost is increased, noise pollution is generated, the safety coefficient is reduced, the product percent of pass cannot be further improved and the like are avoided, and the sealing sheet metal part is an important problem to be solved today.
Disclosure of Invention
The noun explains:
sweeping, a two-dimensional volume object is taken as a cross-section along a path and the resulting three-dimensional volume is stretched along the path.
Springback: the total bending deformation of the sheet metal part under the total stamping use is divided into plastic deformation and elastic deformation, after external force is removed after stamping is finished, the plastic deformation is kept, and the elastic deformation disappears, so that part of the bent body is reduced, and the bending angle and the bending radius of the sheet metal part are inconsistent with the corresponding size of a die.
The invention is realized by the following technical scheme:
1. the use method of the manual sizing die is characterized by comprising the following steps: the method comprises the following steps:
a. sleeving the sheet metal part into the male die part, and enabling the sheet metal part to surround the male die forming part;
b. selecting one bending deformation area of the sheet metal part for shape correction;
c. placing the selected bending deformation area in the female die forming groove, and enabling the outer contour surface of the selected bending deformation area to form first contact with the contour surface of the female die forming groove;
d. keeping the connecting seat fixed at a certain shape correction height along the Z axis;
e. the convex die part is enabled to perform first rotary motion by applying a first external force, and the shape correction of all shape correction positions of the bending deformation area along the X-axis direction is completed through the first rotary motion;
f. selecting another bending deformation area of the sheet metal part for shape correction;
g. and c, returning to the step c until the correction of all bending deformation areas of the sheet metal part is completed.
The manual shape correcting die comprises a male die part, a female die part, a die carrier, a lifting device and a connecting seat; setting a space coordinate system XYZ, wherein the space coordinate system XYZ is provided with an X axis, a Y axis and a Z axis which are vertical in pairs, and an XY plane, an XZ plane and a YZ plane which are vertical in pairs; a female die forming groove is formed in one side of the top surface of the female die part, and the other side of the top surface of the female die part is fixedly connected with the die frame or integrated with the die frame; the female die forming groove is a groove which is generated by performing second sweeping on a second section profile parallel to the YZ plane along a second sweeping path on the XZ plane; the connecting seat is positioned above the female die part and is movably connected with the die carrier through the lifting device; the movable connection is specifically as follows: the lifting device is respectively connected with the die carrier and the connecting seat, can control the connecting seat to be perpendicular to the first lifting motion of XY plane relative to the female die part, and can control the start and stop of the first lifting motion: the male die part comprises a male die base part and a male die forming part arranged at the bottom of the male die base part; the male die forming part is a convex strip which is generated by carrying out first sweeping on a first cross section profile parallel to the YZ plane along a first sweeping path on the XZ plane; the first sweeping path is an arc path and/or an arc-like path combined path; one end of the male die base body and one end of the connecting seat form a first hinge joint and a first rotating shaft parallel to the Y axis; the punch base body part can do first rotary motion around the first rotary shaft; the first cross-sectional profile shape substantially conforms to the cross-sectional profile shape inside the bending deformation zone; the second cross-sectional profile substantially conforms to the shape of the cross-sectional profile outside the bending deformation zone.
Further, the step d specifically includes: the connecting seat is fixed after first lifting movement is carried out to a certain shape correction height by starting the lifting device; said step e may consist of the following substeps:
e1, applying a first external force to make the male die part perform the first rotary motion, so that the contour surface of the male die forming part is in second contact with a certain correction position of the inner contour surface of the selected bending deformation area;
e2, continuously increasing the first external force to enable the male die forming part and the female die forming groove to simultaneously apply pressure to the inner and outer contour surfaces of the sheet metal part at the second contact position and start to generate plastic deformation until the plastic deformation meeting the design angle and size requirements of the part is completely completed by the inner contour surface of the sheet metal part at the second contact position and the contour surface of the male die forming part within an allowable range;
e3, starting the lifting device to enable the connecting seat to perform the first lifting motion to another shape correction height and then to be fixed;
e4, applying a first external force to make the male die part perform the first rotary motion, and making the profile surface of the male die forming part form a second contact with another correction position of the inner profile surface of the selected bending deformation area;
e5, returning to the step e2 until all correction positions of the selected bending deformation area along the X-axis direction are corrected;
further, the correction position may vary with the variation of the correction height, and may be located at any position of the bending deformation region in the X-axis direction.
Further, the number of the correction positions is 3, and the correction positions are respectively located at the head part, the middle part and the tail part of the bending deformation area in the X-axis direction.
Furthermore, the shape correcting pressure generated by the 3 shape correcting positions is different, the head part close to the connecting seat 5 is the largest, the head parts are sequentially reduced along the X axis, and the tail part is the smallest. The operator can select different parts to correct the shape according to the requirement of the strength.
Further, the step e may also consist of the following steps:
e1, making the male die part 1 perform the first rotary motion by applying a first external force, and making the contour surface of the male die forming part 13 form a second contact with a certain shape correction position of the inner contour surface of the selected bending deformation zone;
e2, continuously increasing the first external force to enable the male die forming part and the female die forming groove to simultaneously apply pressure to the inner and outer contour surfaces of the sheet metal part at the second contact position and start to generate plastic deformation until the plastic deformation meeting the design angle and size requirements of the part is completely completed by the inner contour surface of the sheet metal part at the second contact position and the contour surface of the male die forming part within an allowable range;
e3, moving the sheet metal part along the X-axis direction, and changing the shape correction position of the sheet metal part;
e4, applying a first external force to make the male die part perform the first rotary motion, and making the profile surface of the male die forming part form a second contact with another correction position of the inner profile surface of the selected bending deformation area;
e5, returning to the step e2 until all correction positions of the selected bending deformation area along the X-axis direction are corrected.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the device is adopted to correct the shape of the sheet metal part, and the sheet metal part is sleeved in the male die part, and a first external force is applied to enable the male die forming part to make a first rotary motion relative to the female die forming groove, so that the first external force can vertically transmit an external acting force required by stamping to a bending deformation area of the sheet metal part through the first rotary motion, thereby avoiding the correction interference caused by the structure of the sheet metal part, and greatly reducing or even avoiding the generation of horizontal component force; need not to strike like prior art, realized the mute operation, avoided noise pollution, delayed operator's operation fatigue, reduced the emergence probability of production accident.
Because the horizontal component force is greatly reduced or even disappears, the positioning in the horizontal direction can be effectively carried out during actual production, and the external acting force is vertical downwards, so that the stress direction of the sheet metal part is single, the secondary change of the bending angle and the bending radius of the bending deformation area of which the shape correction is finished at other positions of the sheet metal part is not easy to cause, the production efficiency is greatly improved, and the product quality is ensured; the device is simple to operate, the operator only needs to hold the convex die part by hand to perform the first rotary motion, and the sheet metal part is fixed by one hand to finish the shape correction of the bending deformation area, so that the requirement on the production skill of the operator is greatly reduced, and the production cost is further saved.
In conclusion, aiming at sealing sheet metal parts, the device and the use method can avoid shape correction interference caused by the structure of the device, so that external acting force required by shape correction can vertically act on a shape correction position, further the generation of horizontal component force is avoided, and a series of good technical effects of improving production efficiency, reducing production cost, increasing safety coefficient, eliminating noise pollution, further improving product qualification rate and the like are further generated, and the device and the use method are very worthy of being popularized in actual production.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a general schematic view of a hand-sizing die according to some embodiments of the present invention;
FIG. 2 is a block diagram of an exemplary component suitable for use in the apparatus of the present invention according to some embodiments of the present invention;
FIG. 3 is a block diagram of another exemplary component suitable for use in the apparatus of the present invention according to some embodiments of the present invention;
FIG. 4 is a front view of a male mold section in accordance with certain embodiments of the present invention;
FIG. 5 is a schematic left side view of the male mold section shown in some embodiments of the invention;
FIG. 6 is a schematic diagram of a female mold section according to some embodiments of the invention;
FIG. 7 is an enlarged view at I of the schematic structural view of the female mold section according to some embodiments of the present invention;
FIG. 8 is a schematic view of the manner in which the male mold portion operates according to some embodiments of the present invention;
FIG. 9 is a schematic view of a lift device according to some embodiments of the present invention;
figure 10 is a schematic representation of a scaffold structure according to some embodiments of the present invention;
figure 11 is a cross-sectional view a-a of a scaffold structure schematic according to some embodiments of the invention;
FIG. 12 is a front view of a connector holder configuration according to some embodiments of the present invention;
FIG. 13 is a top view of a connector holder configuration according to some embodiments of the present invention;
fig. 14 is a diagram illustrating the assembly relationship of the mold frame, the lifting device, the connecting base and the plug according to some embodiments of the present invention;
fig. 15 is an enlarged view at I of an assembly relationship diagram of the mold frame, the lifting device, the connecting seat and the plug according to some embodiments of the present invention;
FIG. 16 is another general schematic view of a hand-sizing die according to some embodiments of the invention;
FIG. 17 is a schematic view of another mode of operation of the male mold portion according to some embodiments of the present invention;
figure 18 is a cross-sectional view of a female mold portion according to some embodiments of the present invention.
Reference numbers and corresponding part names in the drawings:
1-male die part, 11-male die base part, 12-handle extension part, 13-male die forming part, 131-first cross-sectional profile, 132-first sweeping path, 2-female die part, 21-female die base plate, 22-female die base plate, 23-female die forming groove, 231-second cross-sectional profile, 232-second sweeping path, 3-die base, 31-connecting seat accommodating part, 32-threaded lifting hole, 33-second guide part, O2-second rotating shaft, 4-lifting device, 41-small shaft part, 42-threaded part, 43-rocker part, 5-connecting seat, O1-first rotating shaft, 51-small shaft accommodating hole, 52-first guide part, 6-plug, 7-sheet metal part, 71-bending deformation region, 5-connecting seat, O1-first rotating shaft, 51-small shaft accommodating hole, 52-first guide part, 6-plug, 7-sheet metal part, 71-bending deformation, a 1-No. 1 calibration point, a 2-No. 2 calibration point, a 3-No. 3 calibration point.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
As shown in fig. 2 and 3, the sheet metal part 7 suitable for the shape correction of the device of the present invention has a sealing structure, so that the whole part is in a shape like a Chinese character 'kou' or other closed-loop structure, and due to the special form of the part, after the part is subjected to the first stamping, due to the interference of the structure of the part, the traditional shape correction mode cannot vertically transmit the acting force to the bending deformation area 71 needing shape correction, and a large horizontal component force is generated, so that the input energy is greatly wasted, and a series of problems such as reduction of production efficiency, increase of production cost, reduction of safety factor, failure in further improvement of product qualification rate, etc. are generated.
In some embodiments, the manual sizing die of the present invention comprises a male die portion 1, a female die portion 2, a die carrier 3, and a connecting seat 5 as shown in fig. 1; for convenience of explaining the structure of the device, a space coordinate system XYZ is provided, and the space coordinate system XYZ has pairwise perpendicular X-axis, Y-axis and Z-axis, and pairwise perpendicular XY-plane, XZ-plane and YZ-plane. As shown in fig. 6 and fig. 1, the female mold part 2 is composed of two parts, one part is a female mold base 21 with a U-shaped sliding groove at the bottom, the other part is a female mold base 22 with four peripheral surfaces designed with female mold forming grooves 23 of different specifications, any two opposite peripheral surfaces of the female mold base 22 can be detachably connected with the two side groove surfaces of the U-shaped groove of the female mold base 21 in a sliding fit manner, the other side of the top surface of the female mold base 21 is fixed with the mold base 3 by bolts, or a connection manner such as welding or an integral structure or any other structure or connection manner that enables the mold base 3 to have a fixing effect relative to the female mold base 21 is adopted, which is not described in detail herein; the female mold groove 23 is a groove generated by a second sweep of a second cross-sectional profile 231 parallel to the YZ plane along a second sweep path 232 in the XZ plane, as shown in fig. 7. The connecting base 5 is located above the female mold part 2 and is physically connected with the mold frame 3, the physical connection may be a direct connection of a welded structure, a threaded connection and an integral structure as shown in fig. 1, or an indirect connection through some intermediate devices as shown in fig. 16, but whatever connection mode is, the connecting base 5 should be kept fixed in position relative to the mold frame 3 during the shape calibration, and some preferred structures will be described in detail in the following embodiments. As shown in fig. 1, 4 and 5, the male mold part 1 includes a male mold base part 11 and a male mold forming part 13 provided at the bottom of the male mold base part 11; the male forming part 13 is a convex strip generated by first sweeping of a first cross-sectional profile 131 parallel to the YZ plane along a first sweeping path 132 in the XZ plane; one end of the punch base part 11 and one end of the connecting seat 5 form a first hinge shown in fig. 1 and a first rotating shaft O1 parallel to the Y axis; the punch base part 11 is capable of a first pivoting movement about the first pivoting axis O1. As shown in fig. 1, in actual production, an operator can hold the sheet metal part 7 in one hand and set the sheet metal part 7 in the male die part 1, and place the sheet metal part 7 in the female die forming groove 23, operate the male die part 1 in one hand and do a first rotary motion around the first rotary shaft O1, so that the male die part 1 opens and closes like a guillotine and cooperates with the female die part 2 to apply pressure to the sheet metal part 7, and shape correction is completed. Since the corrected dimension of the bending deformation zone 71 is determined by the contour dimensions of the male die forming part 13 and the female die forming groove 23, and considering the influence of springback after the external force is removed, the dimensions of the male die forming part 13 and the female die forming groove 23 should be designed to be slightly smaller than the designed dimensions of the inner side and the outer side of the bending deformation zone 71, specifically, the radius dimension and the angle dimension of the first cross-sectional profile 131 should be made to be slightly smaller than the angle dimension and the radius dimension of the inner side of the bending deformation zone 71, and the radius dimension and the angle dimension of the second cross-sectional profile 231 should be made to be slightly smaller than the angle dimension and the radius dimension of the outer side of the bending deformation zone 71. Because the device of the application utilizes a hinged mode and makes the convex mould part 1 do the first rotary motion around the first rotary shaft O1 to finish the shape correction, the pressure generated on the bending deformation area 71 during the shape correction is vertical downward, the interference of the part structure to the shape correction is avoided, and a series of influences of the generation of larger horizontal component force on the processing quality, the production safety and the like are also avoided.
In some embodiments, when some sheet metal parts 7 with longer correction areas are subjected to shape correction, such as a long rectangular sealing sleeve with a specification of 80 × 100 × 300, the characteristics of the rotary motion are combined, and a conventional shape correction method is considered, so that the whole bending deformation area 71 cannot be sufficiently corrected, and in order to ensure that the shape correction is sufficient, a design of additionally installing the lifting device 4 shown in fig. 16 on the device is adopted, and the physical connection specifically may be: as shown in fig. 16 and 14, the lifting device 4 is respectively connected to the mold frame 3 and the connecting seat 5, and can control the connecting seat 5 to perform a first lifting motion perpendicular to the XY plane with respect to the cavity portion 2, and to achieve this function, the lifting device 4 can be implemented by a gear and rack transmission mechanism, a chain transmission mechanism, a belt transmission mechanism, and the like, and an external driving device controls the start and stop of the lifting device 4, so that the mold frame 3 and the connecting seat 5 are kept fixed in the shape correction process; however, considering that the device of the present application is a manual sizing die, the sizing process does not require too much punching force, and some simpler structures can be adopted and the purpose of reducing the production cost can be achieved by means of manual driving, so to achieve this purpose, it is preferable to design the lifting device 4 as a lifting rod structure as shown in fig. 16 and 9, and the specific structure and the specific connection manner of the lifting rod will be described in detail in the following embodiments; and the first sweeping path 132 is a circular arc path and/or a circular arc-like path combined path shown in fig. 4, so that the whole male die forming part 13 is in a circular arc convex strip structure shown in fig. 16 and 17. In this way, as can be seen from fig. 16 and 17, when the lifting device 4 controls one end of the male die portion 1 at the first hinge joint to perform the first lifting motion along the Z axis, when the shaping height of the male die portion 1 in the Z axis direction is different in the process, the contact position with the bending deformation region 71, that is, the shaping position is also different, so that the correction of any position of the bending deformation region 71 in the length direction thereof, that is, the X axis direction shown in fig. 17 can be realized, in combination with the practical working experience, in order to ensure the processing quality and the processing efficiency, the head portion, the middle portion and the tail portion of the bending deformation region 71 are selected as the practical shaping positions, and the first shaping point a1, the second shaping point a2 and the third shaping point a3 are respectively set for correction, and the first swept path 132 is set as an arc path according to the practical working experience, and the arc size is R3010.38.
In some embodiments, as shown in fig. 9, the lifting device 4 of the lifting rod structure comprises, from bottom to top: the small shaft portion 41, the threaded portion 42, and the rocker portion 43, and all of them have a common pivot shaft; the threaded portion 42 is larger in diameter size than the small shaft portion 41, and forms a first step surface where the two abut; the rocker portion 43 may be an L-shaped hook member fixed to one end of the threaded portion 42, or a turntable member with a crank. As shown in fig. 16, 10 and 11, the mold frame 3 is provided therein with a connecting seat accommodating portion 31 and a threaded lifting hole 32 which is opened from the top surface of the mold frame 3 along the Z-axis direction and penetrates through the connecting seat accommodating portion 31, and a hole axis of the threaded lifting hole 32 is a second rotation axis O2 which is coaxial with the Z-axis; the threaded portion 42 is in first threaded engagement with the threaded lift hole 32 as shown in fig. 14. As shown in fig. 12 and 13, the top surface of the connecting socket 5 is provided with a through small shaft receiving hole 51, and is received in the connecting socket receiving portion 31 as shown in fig. 14, and forms a first sliding fit with the mold frame 3. The first sliding fit is specifically as follows: two side surfaces of the connecting seat 5 are provided with first guide parts 52 with convex strip structures shown in fig. 12; the two inner side surfaces of the connecting seat accommodating part 31 are provided with second guide parts 33 which are illustrated in fig. 10 and 11, are opened in a direction parallel to the second rotation axis O2, and penetrate through the groove structure of the bottom surface of the mold frame 3, and the first sliding fit is a concave-convex fit of the first guide part 52 and the second guide part 33. The first guide portion 52 and the second guide portion 33 cooperate with each other to guide the connecting socket 5 such that the direction of the first elevation movement is not deviated. As shown in fig. 15, the plug 6 is fixedly connected to the other end of the small shaft portion 41 in a manner of inserting a pin, where the plug 6 and the small shaft portion 41 may also replace the pin by a manner of screw connection, interference connection, welding, gluing, etc., which is not shown one by one; the fixed connection between the plug 6 and the small shaft part 41 enables the connecting seat 5 to be limited between the end face of the plug 6 and the first step face. In specific use, as shown in fig. 16 and 14, an operator can hold the crank of the rocker part 43 by hand to make the crank perform a rotation motion around the second rotation axis O2 and transmit the rotation motion to the threaded part 42 to make the crank rotate along with the rotation motion, and the threaded part 42 is in first threaded connection with the threaded lifting hole 32, so that the rotation motion is further converted into a spiral lifting motion of the lifting device 4, wherein the crank of the rocker part 43 is used similarly to the use of a crank thumb wheel of a lathe, and the rotation of the whole lifting device 4 is facilitated. The small shaft accommodating hole 51 and the small shaft part 41 are in clearance fit as shown in fig. 15, so that the connecting seat 5 cannot rotate synchronously with the lifting device 4 during spiral lifting movement, but because the connecting seat 5 is limited between the end surface of the plug 6 and the first step surface, the connecting seat 5 will lift synchronously with the lifting device 4 during spiral lifting movement, namely the lifting device 4 controls the connecting seat 5 to do first lifting movement, and because the thread part 42 and the thread lifting hole 32 are in first thread connection, because of the self-locking effect of the thread, when the lifting device 4 stops rotating, the lifting device 4 will stop at the original position, so that the starting and stopping of the lifting device 4 can be realized without an external driving device.
In some embodiments, for example, when the shape correction area is short or when the sheet metal part 7 only needs to be partially corrected in the bending deformation area 71, for example, an elongated rectangular sealing collar with a specification of 80 × 100 × 50, the structure and the operation mode of the device of the present application can be appropriately simplified, and the shape correction can also be realized, as shown in fig. 1 and 8. As shown in fig. 1, the physical connection is specifically designed as: by adopting the structure that the connecting seat 5 and the die carrier 3 are integrated with each other, and adopting a mode of keeping the connecting seat 5 fixed by fixed connection and the like, the male die part 1 does not need to move up and down, and only the first rotary motion around the first rotary shaft O1 is carried out. As shown in fig. 8, when specifically correcting shape, the direct operation male mold portion 1 winds the first rotary motion around the first rotary shaft O1 and presses down the sheet metal part 7, and because the length of the sheet metal part 7 is short, the sheet metal part 7 can be held by hand to move back and forth in the X-axis direction in combination with the characteristics of the rotary motion, and the sufficient correction of the bending deformation area 71 can be realized in a mode of correcting shape for many times.
In some embodiments, the device structure with the lifting device 4 shown in fig. 16 can also realize the shape correction shown in fig. 8, and the lifting device 4 is operated to make the male die portion 1 at a fixed shape correction height unchanged, so that the sheet metal part 7 is moved back and forth along the X-axis direction and the shape correction is performed for multiple times, and the sufficient shape correction of the bending deformation area 71 can also be realized.
In some embodiments, the sheet metal part 7 to be shaped has different dimensions, different dimensions having different thickness dimensions, different bending radius dimensions and different bending angle dimensions of the bending deformation zone, so that different dimensions of the male mold part 1 and the female mold part 2 must also be provided. Therefore, as shown in fig. 1, the first hinge is designed to be detachable, for example, a bolt fastener is used as a hinge between the connecting seat 5 and the male die part 1, so that the male die parts 1 with different specifications can be replaced at any time according to requirements. The female die part 2 is also designed into a split structure including a female die base plate 21 and a female die holder 22 as shown in fig. 1 and 6, different female die holders 22 are replaced according to requirements during use, in order to reduce production cost, a plurality of peripheral surfaces can be arranged on the peripheral outline of the female die holder 22 as shown in fig. 6, female die forming grooves 23 of different specifications are arranged on each peripheral surface, the required female die forming grooves 23 of corresponding specifications are turned to the top and are just opposite to the lower part of the male die part 1 during use, and the female die holder 22 can be manufactured into a regular polygon structure, such as a square shown in fig. 6, for convenience in manufacturing. In order to ensure that the female die forming grooves 23 can be turned to the consistent positions each time the specifications are changed, the female die forming grooves 23 opposite to each other can be designed to be in a relative layout or a staggered layout as shown in fig. 18, namely, the female die forming grooves 23 are in a staggered layout with the same size. In order to realize the quick replacement of the female die base plate 21 and the female die holder 22 and the quick positioning after the replacement, a through accommodating groove is arranged on the top surface of the female die base plate 21 and on one side opposite to the die carrier 3 as shown in fig. 6; the accommodating groove is matched with the shape of the die holder 22, and the die holder 22 is in sliding fit with the die base plate 21.
In some embodiments, for the purpose of saving labor in operation, the position of the male mold part 1 where the first external force is applied may be located at the farthest end of the male mold part 1 relative to the first hinge, because the shape correction of the present device depends on the rotation movement, the hinge of the male mold part 1 and the contact position of the bending deformation region 71 form a moment arm L1, and generate the pressure F1 at the shape correction point, and the hinge of the male mold part 1 and the position of the first external force application form another moment arm L2, and the magnitude of the first external force required here is F2, which uses the principle of leverage that the greater the value of the first external force F2 is required to be applied because the moment is the same as each other, i.e. the moment M1 × F1 is L2 × F2, so that in the case of a constant value M, the value of the moment arm L2 formed by the hinge of the male mold part 1 and the position of the first external force application is greater, therefore, in order to further reduce the magnitude of the applied first external force F2, the handle extension 12 may be disposed at one end of the punch base 11 as shown in fig. 14, and the first external force may be applied to the handle extension 12 during operation, so that the force is further applied to the first hinge, i.e., the force arm L2 is further increased, and the applied first external force F2 is further reduced. According to the lever principle, the shape correcting pressure generated by different shape correcting positions is different, the force applied to the shape correcting position closer to the connecting seat 5 is the largest, and the force applied to the shape correcting position farther from the connecting seat 5 along the X axis is smaller. The operator can select different parts to correct the shape according to the requirement of the strength.
In some embodiments, the bending angle and the bending radius of the sheet metal part 7 need to be corrected simultaneously, that is, the bending radius zone includes the bending angle size and the bending radius size, such as the sheet metal part 7 shown in fig. 2 and 3, after the shape correction, the bending angle needs to be ensured to be 90 °, the production experience and the material characteristics are integrated, and the springback effect is considered, the angles of the male die forming part 13 and the female die forming groove 23 are both made to be 80 °, in the actual shape correction, when the shape correction of the bending deformation zone 71 is subjected to the pressure from the male die forming part 13 and the female die forming groove 23, the fit between the bending deformation zone 71 and the male die forming groove is kept, and the bending angle is kept to be 80 ° at this moment, after the external force is removed, the bending deformation zone 71 will generate a certain reset due to the elastic deformation, and reset to 90 °, so that the "compensation.
In some embodiments, when the sheet metal part 7 needs to be shaped in a longer area, as shown in fig. 16, the sheet metal part 7 can be shaped by the following steps:
a. sleeving the sheet metal part 7 into the male die part 1, and enabling the sheet metal part 7 to surround the male die forming part 13;
b. selecting one bending deformation area 71 of the sheet metal part 7 for shape correction;
c. placing the selected bending deformation area 71 in the female die forming groove 23, and enabling the outer contour surface of the selected bending deformation area 71 to form first contact with the contour surface of the female die forming groove 23;
d. starting the lifting device 4 to enable the connecting seat 5 to perform the first lifting motion to a certain shape correction height and then to be fixed;
e. as shown in fig. 17, a first external force is applied to make the male mold part 1 perform the first rotary motion, so that the contour surface of the male mold part 13 is in second contact with a certain correction position of the inner contour surface of the selected bending deformation zone 71;
f. continuing to increase the first external force, so that the male die forming part 13 and the female die forming groove 23 simultaneously apply pressure to the inner and outer contour surfaces of the sheet metal part 7 at the second contact position and start to generate plastic deformation until the contour of the sheet metal part 7 at the second contact position is within an allowable range and the plastic deformation required by the design angle and the size of the part is met;
g. starting the lifting device 4 to enable the connecting seat 5 to perform the first lifting motion to another shape correction height as shown in fig. 17 and then to be fixed;
h. as shown in fig. 17, applying a first external force to make the male mold part 1 perform the first rotary motion, so that the contour surface of the male mold part 13 is in second contact with another correction position of the inner contour surface of the selected bending deformation zone 71;
i. returning to the step f until all the correction positions of the selected bending deformation area 71 along the X-axis direction are corrected;
j. selecting another bending deformation area 71 of the sheet metal part 7 for shape correction;
k. and c, returning to the step c until the correction of all the bending deformation areas 71 of the sheet metal part 7 is completed.
By adopting the method, the height of the connecting seat 5 is adjusted to drive the convex die part 1 to change up and down in the shape correction height, and further the shape correction position is driven to be adjusted to any position of the bending deformation area 71 along the X-axis direction, namely, the shape correction at any position of the bending deformation area 71 along the X-axis direction is realized, but in order to improve the production efficiency and ensure the product quality, according to the summary of practical production experience, the shape correction positions are set as a1 st shape correction point a1, a2 nd shape correction point a2 and a3 rd shape correction point a3 which are respectively positioned at the head part, the middle part and the tail part of the bending deformation area 71 and are shown in figure 17.
In some embodiments, when the sheet metal part 7 needs to be shaped in a short or only partial area, the shaping can be performed by the following steps:
a. sleeving the sheet metal part 7 into the male die part 1, and enabling the sheet metal part 7 to surround the male die forming part 13;
b. selecting one bending deformation area 71 of the sheet metal part for shape correction;
c. placing the selected bending deformation area 71 in the female die forming groove 23, and enabling the outer contour surface of the selected bending deformation area 71 to form first contact with the contour surface of the female die forming groove 23;
d. keeping the shape correction height of the connecting seat 5 along the Z axis fixed;
e. as shown in fig. 8, the male mold part 1 is subjected to the first rotary motion by applying a first external force, so that the contour surface of the male mold part 13 is brought into second contact with a certain correction position of the inner contour surface of the selected bending deformation zone 71;
f. as shown in fig. 8, the first external force is continuously increased, so that the male die forming part 13 and the female die forming groove 23 simultaneously apply pressure to the inner and outer contour surfaces of the sheet metal part 7 at the second contact position and start to perform plastic deformation until the contour of the sheet metal part 7 at the second contact position is within an allowable range and the plastic deformation meeting the design angle and size requirements of the part is performed;
g. as shown in fig. 8, the sheet metal part 7 is moved along the X-axis direction, and the shape correction position of the sheet metal part 7 is changed;
h. applying a first external force to make the male die part 1 perform the first rotary motion, so that the contour surface of the male die forming part 13 is in second contact with another correction position of the inner contour surface of the selected bending deformation zone 71;
i. returning to the step f until all the correction positions of the selected bending deformation area 71 along the X-axis direction are corrected;
j. selecting another bending deformation area 71 of the sheet metal part 7 for shape correction;
k. and c, returning to the step c until the correction of all the bending deformation areas 71 of the sheet metal part 7 is completed.
By adopting the mode, the shape correction of all positions on the bending deformation area 71 along the X-axis direction can be realized by the mode of translating the sheet metal part 7 back and forth. The method is used for sheet metal parts with short shape correction areas, the operation time can be shortened, the operation equipment can be simplified, but if the shape correction areas are long, the method is not suitable, because the method is adopted, the stroke of the shape correction die required by the operation mechanism is at least 2 times of the length of the sheet metal part 7, namely at least 2 times of the length of the sheet metal part 7 of the male die part 1 and the female die part 2, because the male die part 1 and the female die part 2 are stressed parts, if the length is too long, deformation is easily caused in the frequent use process, the service life is influenced, and the storage is not easy, so the sheet metal part 7 with the long shape correction areas can only be corrected by changing the shape correction height to change the shape correction position.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (2)
1. The use method of the manual sizing die is characterized by comprising the following steps: the manual shape correcting die comprises a male die part (1), a female die part (2), a die carrier (3), a lifting device (4) and a connecting seat (5); setting a space coordinate system XYZ, wherein the space coordinate system XYZ is provided with an X axis, a Y axis and a Z axis which are vertical in pairs, and an XY plane, an XZ plane and a YZ plane which are vertical in pairs;
a female die forming groove (23) is formed in one side of the top surface of the female die part (2), and the other side of the top surface of the female die part is fixedly connected with the die carrier (3) or integrated with the die carrier; the female die forming groove (23) is a groove generated by a second sweeping of a second cross-sectional profile (231) parallel to the YZ plane along a second sweeping path (232) in the XZ plane;
the connecting seat (5) is positioned above the female die part (2) and is movably connected with the die carrier (3) through the lifting device (4); the movable connection is specifically as follows: the lifting device (4) is respectively connected with the die carrier (3) and the connecting seat (5), can control the connecting seat (5) to do a first lifting motion vertical to the XY plane relative to the female die part (2), and can control the starting and stopping of the first lifting motion;
the male die part (1) comprises a male die base part (11) and a male die forming part (13) arranged at the bottom of the male die base part (11); the male die forming part (13) is a convex strip generated by carrying out first scanning on a first cross section profile (131) parallel to the YZ plane along a first scanning path (132) in the XZ plane; the first sweeping path (132) is an arc path and/or an arc-like path combination path; one end of the punch base body (11) and one end of the connecting seat (5) form a first hinge joint and a first rotating shaft (O1) parallel to the Y axis; the punch base part (11) can perform a first rotary motion around the first rotary shaft (O1);
the shape of the first cross-sectional profile (131) is approximately consistent with the shape of the cross-sectional profile of the inner side of the bending deformation area (71) of the sheet metal part (7); the second cross-sectional profile (231) substantially conforms to the shape of the cross-sectional profile outside the bending deformation zone (71);
the using method of the manual sizing die comprises the following steps:
a. sleeving the sheet metal part (7) into the male die part (1), and enabling the sheet metal part (7) to surround the male die forming part (13);
b. selecting one bending deformation area (71) of the sheet metal part (7) for shape correction;
c. placing the selected bending deformation area (71) in the female die forming groove (23), and enabling the outer contour surface of the selected bending deformation area (71) to form first contact with the contour surface of the female die forming groove (23);
d. the connecting seat (5) is fixed after first lifting movement is carried out to a certain shape correction height by starting the lifting device (4);
e1, making the male die part (1) perform the first rotary motion by applying a first external force, and making the contour surface of the male die forming part (13) form a second contact with a certain correction position of the inner contour surface of the selected bending deformation zone (71);
e2, continuously increasing the first external force, so that the male die forming part (13) and the female die forming groove (23) simultaneously apply pressure to the inner and outer contour surfaces of the sheet metal part (7) at a second contact position and start to generate plastic deformation until the contour of the sheet metal part (7) at the second contact position is within an allowable range and meets the plastic deformation required by the design angle and size of the part;
e3, starting the lifting device (4), enabling the connecting seat (5) to perform the first lifting motion to another shape correction height and then to be fixed, or moving the sheet metal part (7) along the X-axis direction, and changing the shape correction position of the sheet metal part (7);
e4, applying a first external force to make the male die part (1) perform the first rotary motion, and making the contour surface of the male die forming part (13) form a second contact with another shape correcting position of the inner contour surface of the selected bending deformation zone (71);
e5, returning to the step e2 until all correction positions of the selected bending deformation area (71) along the X-axis direction are corrected;
f. selecting another bending deformation area (71) of the sheet metal part (7) for shape correction;
g. returning to the step c until the shape correction of all bending deformation areas (71) of the sheet metal part (7) is completed;
the shape correcting position can change along with the shape correcting height and the movement of the sheet metal part (7) along the X-axis direction, and can be located at any position of the bending deformation area (71) in the X-axis direction.
2. The method for using the manual sizing die as claimed in claim 1, wherein: the number of the correction positions is 3, and the correction positions are respectively positioned at the head part, the middle part and the tail part of the bending deformation area (71) in the X-axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911145846.3A CN110788164B (en) | 2019-11-20 | 2019-11-20 | Using method of manual shape correction die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911145846.3A CN110788164B (en) | 2019-11-20 | 2019-11-20 | Using method of manual shape correction die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110788164A CN110788164A (en) | 2020-02-14 |
| CN110788164B true CN110788164B (en) | 2021-03-23 |
Family
ID=69445737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911145846.3A Active CN110788164B (en) | 2019-11-20 | 2019-11-20 | Using method of manual shape correction die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110788164B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231511B (en) * | 2021-06-03 | 2023-03-28 | 四川航天长征装备制造有限公司 | Rapid forming method for manual outer pulling edges at four corners of box-shaped sheet metal part |
| CN113770650B (en) * | 2021-09-08 | 2022-07-15 | 安徽江淮汽车集团股份有限公司 | Manual manufacturing method of sheet metal part |
| CN114260650B (en) * | 2021-12-17 | 2023-11-03 | 江西洪都航空工业集团有限责任公司 | Sheet metal forming method for airplane homodromous bent narrow-long-mouth part |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53138638U (en) * | 1977-04-08 | 1978-11-02 | ||
| CN201978967U (en) * | 2011-01-12 | 2011-09-21 | 常州市伟泰电子科技有限公司 | Truing device for elongated weld assembly with opening |
| CN204545030U (en) * | 2015-01-13 | 2015-08-12 | 宁波新世达精密机械有限公司 | Manual multiple spot straitening machine |
| CN207325649U (en) * | 2017-09-19 | 2018-05-08 | 湖北太岳园林古建工程股份有限公司 | A kind of sunken inside metallic cultural relics reshaper |
| CN209272167U (en) * | 2018-11-16 | 2019-08-20 | 湖北沃达菲电器有限公司 | A kind of uncoiler roll shaft drive adjusting device |
| CN209035181U (en) * | 2018-11-22 | 2019-06-28 | 黄石华信机械设备有限公司 | A kind of fine-tuning rear baffle of bending machine gear refers to |
| CN110238254A (en) * | 2019-06-03 | 2019-09-17 | 江苏健力钢管有限公司 | A kind of cold rolling molding machine of seamless steel pipe |
-
2019
- 2019-11-20 CN CN201911145846.3A patent/CN110788164B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110788164A (en) | 2020-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110788164B (en) | Using method of manual shape correction die | |
| EP1238721A2 (en) | Negative-angle forming die | |
| CN110788163B (en) | Manual correction mold | |
| CN101564745B (en) | Device for bending upper rotating shafts | |
| KR0136598B1 (en) | Bending apparatus | |
| CN207076866U (en) | Thin plate swaging punching die component | |
| CN210754600U (en) | Punch forming device for television bracket connecting piece | |
| CN208162433U (en) | Rotate flange and shaping mould | |
| CN210754746U (en) | Novel punch-die structure for riveting without rivet | |
| CN209969342U (en) | Fine adjustment mechanism based on plate spring | |
| CN108339878B (en) | Quick edge covering mechanism for automobile sheet metal parts | |
| CN204276687U (en) | A kind ofly be convenient to change and there is the bending machine die of springback compensation function | |
| CN111085605A (en) | Forming method of beam parts | |
| CN112823957A (en) | Can prevent that bellied forging equipment from appearing in part surface when large-scale annular is forged | |
| CN219274112U (en) | Pneumatic shaper for metal parts | |
| JP2006239713A (en) | Method and die for press work | |
| CN219745943U (en) | Angle-adjustable pipe bending die for round pipe and square pipe | |
| CN220862626U (en) | Die plate tooling die of press machine | |
| CN213530325U (en) | Precise flanging die for flame tube of cantilever type engine | |
| CN219335511U (en) | One-step forming device for door seam cover plate of anti-theft door | |
| CN201329388Y (en) | Bending device for upper rotating shaft | |
| CN204747296U (en) | Synthesizer machine case takes shape and uses riveting special plane | |
| CN109317592A (en) | A kind of forging and forming device and forming method | |
| CN219817625U (en) | Flanging die | |
| CN212190705U (en) | Numerical control bender of integrated robotic arm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |