CN216397751U - Automobile rear axle control rod support forming die - Google Patents
Automobile rear axle control rod support forming die Download PDFInfo
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- CN216397751U CN216397751U CN202123106723.4U CN202123106723U CN216397751U CN 216397751 U CN216397751 U CN 216397751U CN 202123106723 U CN202123106723 U CN 202123106723U CN 216397751 U CN216397751 U CN 216397751U
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Abstract
The utility model relates to a forming die for a bracket of a control rod of a rear axle of an automobile, which comprises an upper die structure and a lower die structure, wherein the upper die structure comprises an upper die plate, a guide sleeve, an upper base plate, an upper fixing plate and a forming upper die; the lower die structure comprises a guide pillar, a lower fixing plate, a first forming lower die, a top plate, a first positioning pin, a second positioning pin, a push rod, a second forming lower die, a material ejecting rod, a lower backing plate, a lower die plate and a third forming lower die. The two ends of the upper forming die are respectively provided with a boss for automatically correcting the die gap, and the middle of the first lower forming die and the middle of the second lower forming die are respectively provided with a groove for automatically correcting the die gap. In the production process of the die, the lug boss and the groove are used for guiding, so that the phenomenon that the upper die and the lower die move to influence the uniformity of a forming gap of the die can be prevented. The mould adopts the lug boss and the groove for automatically correcting the clearance of the mould, and the lower mould is additionally provided with the ejector rod and other structures, so that the service life of the mould is prolonged by times, the production cost is reduced, and the product quality is stable.
Description
Technical Field
The utility model relates to the field of mechanical equipment, in particular to a forming die for a support of a control rod of an automobile rear axle.
Background
In order to transmit traction force, braking force and corresponding reaction torque, a control rod support is required to be installed on the automobile rear axle, and the control rod support is usually installed on an automobile driving axle housing body in a welding mode. The control rod support is used for controlling and ensuring that a sliding object moves forwards according to the appointed track, so that the displacement deviation of the sliding object in the direction vertical to the appointed track is reduced, and the running precision is improved.
In order to ensure the mounting precision and welding strength of the control rod support, the concentricity of the mounting hole (namely, the side holes at two sides) of the control rod support and the coaxiality of two formed circular arcs (namely, circular arcs of which two sides are welded with the rear axle housing body) are controlled very importantly (the welding strength of the control rod support can be ensured only when the welding seam of each welding part of the control rod support and the rear axle housing body is less than or equal to 0.8 mm). The control rod bracket is processed by five working procedures according to the traditional production mode, and the process flow is as follows: blanking → punching → bending to meet the design requirement of the product, so that not only the number of the dies to be installed is large and the production time is long, but also a plurality of material distribution among a plurality of devices is required, and the production efficiency is low.
The utility model designs the forming die of the automobile rear axle control rod bracket based on the optimization consideration of the production process in the prior art, so that the product bending process and the bending process can be formed in the die at one step, namely, two processes are optimized into one process, and the production process of the product is stable, therefore, the forming die of the automobile rear axle control rod bracket is designed to improve the production efficiency and the product quality of the product, and the utility model is very necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a forming die structure of a bracket of a control rod of an automobile rear axle, which improves the die precision, the service life and the product quality by adopting a boss and a groove for automatically correcting the die clearance and additionally arranging a material ejecting rod and other structures on a lower die.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a forming die for a control rod bracket of an automobile rear axle comprises an upper die structure and a lower die structure, wherein the upper die structure comprises an upper die plate, a guide sleeve, an upper base plate, an upper fixing plate and a forming upper die;
the lower die structure comprises a guide pillar, a lower fixing plate, a first forming lower die, a top plate, a first positioning pin, a second positioning pin, a top rod, a second forming lower die, a material ejecting rod, a lower base plate, a lower die plate and a third forming lower die;
the forming upper die is arranged in a fixing cavity of the upper fixing plate in an interference fit manner, and is connected with the upper backing plate through a bolt from the upper end surface of the forming upper die, the guide sleeve is arranged in guide sleeve holes at two sides of the upper die plate in an interference fit manner, and the upper die plate and the upper backing plate are connected with the upper fixing plate through bolts and positioning pins;
two third forming lower dies are arranged on the upper side and the lower side of a fixing cavity of a lower fixing plate in an interference fit manner and are connected with the lower fixing plate through bolts from the side edges respectively, a first forming lower die and a second forming lower die are arranged on the left side and the right side of the fixing cavity of the lower fixing plate in the interference fit manner and are connected with the lower fixing plate through bolts from the side edges respectively, guide pillars are arranged in guide pillar holes on the two sides of the lower fixing plate in the interference fit manner, the lower die plate and the lower backing plate are connected with the lower fixing plate through bolts and positioning pins, two first positioning pins and two second positioning pins are arranged in corresponding positioning pin fixing holes of a top plate respectively in the interference fit manner, two ejector rods on an assembly of the top plate are arranged in corresponding ejector rod fixing holes of the lower backing plate and the lower die directly in a clearance fit manner, and an assembly of the top plate is arranged in corresponding ejector rod holes of the first forming lower die directly in the clearance fit manner, In a forming cavity formed by the second forming lower die and the third forming lower die, the ejector rods are directly placed in ejector rod holes corresponding to the second forming lower die, the lower base plate and the lower die plate through clearance fit.
Furthermore, bosses for automatically correcting the clearance of the die are respectively arranged at two ends of the upper forming die of the upper die structure, grooves for automatically correcting the clearance of the die are respectively arranged between the first lower forming die and the second lower forming die of the lower die structure, and the clearance between the boss for automatically correcting the clearance of the die and the double surfaces of the grooves for automatically correcting the clearance of the die of the upper forming die and the clearance between the boss for automatically correcting the clearance of the die of the first lower forming die and the groove for automatically correcting the clearance of the die of the second lower forming die is 0.08-0.10 mm. In addition, in the production process of the die, the lug boss and the groove are used for guiding, so that the phenomenon that the upper die and the lower die move to influence the uniformity of a forming gap of the die can be prevented.
The first forming lower die, the second forming lower die and the third forming lower die are all embedded, the lower fixing plate is integral, and the first forming lower die, the second forming lower die and the third forming lower die are fixed in a forming cavity of the lower fixing plate through interference fit, so that the material cost of each forming lower die can be saved, the die is convenient and quick to maintain, the strength of each lower die can be improved, and the service life of the die is prolonged.
An inclined plane with an inclination angle of 30 degrees is arranged at the opening of the third forming lower die, and the inclined plane is connected with an arc transition surface, so that the forming friction force can be reduced, and the service life of the third forming lower die is prolonged by at least 3 times. Thereby reducing the pull marks, the single side of the height of two sides and the like of the product produced due to large friction force.
The lower die part is additionally provided with the ejector rod, so that a product can be ejected smoothly (if the ejector rod is not arranged, the product is easy to turn and is clamped in a lower die cavity when being ejected by the ejector plate alone), and the ejector rod is designed into a square shape, so that the ejector rod can be prevented from rotating, and the product is prevented from being pressed out of traces (because the upper end surface of the ejector rod is provided with an inclination which is the same as that of the second forming lower die).
The utility model has the beneficial effects that: the die adopts the structure of a lug boss and a groove for automatically correcting the gap of the die, and the lower die is additionally provided with an ejector rod and the like, so that the service life of the die is prolonged by 5 times, the production cost is reduced, and the product quality is stable; the traditional five processes are optimized into four processes, so that the production efficiency is improved.
Drawings
FIG. 1 is a schematic front view of the mold of the present invention;
FIG. 2 is a schematic top view of the lower die structure of the present invention;
FIG. 3 is a schematic diagram of the right side view of the mold of the present invention;
FIG. 4 is a schematic top view of the upper forming die of the inventive die;
FIG. 5 is a schematic view of a first lower forming die structure of the die of the present invention;
FIG. 6 is a side schematic view of a first lower forming die of the inventive die;
FIG. 7 is a schematic view of the structure of a third lower forming die of the present invention;
FIG. 8 is a schematic structural view of a prefabricated control rod cradle according to the present invention;
fig. 9 is a schematic view of a control lever bracket workpiece (product) processed by the present invention.
Description of reference numerals: the device comprises an upper template 1, a guide sleeve 2, an upper padding plate 3, an upper fixing plate 4, an upper forming die 5, a guide pillar 6, a lower fixing plate 7, a first lower forming die 8, a top plate 9, a first positioning pin 10, a second positioning pin 11, a top rod 12, a second lower forming die 13, a material ejecting rod 14, a lower padding plate 15, a lower template 16, a third lower forming die 17, a prefabricated control rod support 18, a U-shaped hole 19, a product 20, a boss 21, a groove 22, an inclined plane 23 and an arc transition surface 24.
Detailed Description
The present invention can be embodied by technical solutions, and the present invention can be further described by the following examples, however, the scope of the present invention is not limited to the following examples.
As shown in fig. 1, a forming die for a bracket of a control rod of a rear axle of an automobile comprises an upper die structure and a lower die structure, wherein the upper die structure comprises an upper die plate 1, a guide sleeve 2, an upper backing plate 3, an upper fixing plate 4 and a forming upper die 5;
the lower die structure comprises a guide pillar 6, a lower fixing plate 7, a first forming lower die 8, a top plate 9, a first positioning pin 10, a second positioning pin 11, an ejector rod 12, a second forming lower die 13, an ejector rod 14, a lower cushion plate 15, a lower die plate 16 and a third forming lower die 17;
an upper forming die 5 is assembled in a fixing cavity of an upper fixing plate 4 in an interference fit manner, the upper end face of the upper forming die 5 is connected with an upper backing plate 3 through a bolt, a guide sleeve 2 is assembled in guide sleeve holes at two sides of an upper die plate 1 in the interference fit manner, and the upper die plate 1 and the upper backing plate 3 are connected with the upper fixing plate 4 through bolts and positioning pins;
two third shaping lower moulds 17 attach together on the fixed cavity of bottom plate 7, lower both sides through interference fit, and pass through the bolt and be connected with bottom plate 7 from the side respectively, first shaping lower mould 8 and second shaping lower mould 13 attach together in the fixed cavity left and right both sides of bottom plate 7 through interference fit, and pass through the bolt and be connected with bottom plate 7 from the side respectively, guide pillar 6 passes through interference fit and installs in the guide pillar hole on lower bolster 16 both sides, lower bolster 16, lower bolster 15 passes through the bolt and the locating pin is connected with bottom plate 7.
Two first positioning pins 10 and two second positioning pins 11 are respectively installed in corresponding positioning pin fixing holes of a top plate 9 through interference fit, two ejector rods 12 are respectively installed in corresponding ejector rod fixing holes of the top plate 9 through interference fit, two ejector rods 12 on an assembly of the top plate 9 are directly placed in corresponding ejector rod holes of a lower cushion plate 15 and a lower cushion plate 16 through clearance fit, the assembly of the top plate 9 is directly placed in a cavity formed by a first forming lower die 8, a second forming lower die 13 and a third forming lower die 17 through clearance fit, and an ejector rod 14 is directly placed in corresponding ejector rod holes of the second forming lower die 13, the lower cushion plate 15 and the lower cushion plate 16 through clearance fit.
The two ends of the upper forming die 5 of the upper die part are respectively provided with a boss 21 for automatically correcting the die gap, the middle of the first lower forming die 8 and the second lower forming die 13 of the lower die part is provided with a groove 22 for automatically correcting the die gap, and the double-side gap between the boss 21 for automatically correcting the die gap of the upper forming die 5 and the groove 22 for automatically correcting the die gap of the first lower forming die 8 and the second lower forming die 13 is 0.08-0.10 mm, so that the uniformity of the die gap of the upper die and the lower die is not controlled by the manual skill of a bench worker, but is ensured by the machining precision of a machine tool, and the manufacturing precision of the die is improved. In addition, in the production process of the die, the lug boss and the groove are used for guiding, so that the phenomenon that the upper die and the lower die move to influence the uniformity of a forming gap of the die can be prevented.
The first forming lower die 8, the second forming lower die 13 and the third forming lower die 17 are all embedded, the lower fixing plate 7 is integral, and the first forming lower die 8, the second forming lower die 13 and the third forming lower die 17 are fixed in a forming cavity of the lower fixing plate 7 through interference fit, so that the material cost of each forming lower die can be saved, the die is convenient and quick to maintain, the strength of each lower die can be improved, and the service life of the die is prolonged.
An inclined plane 23 with an inclination angle of 30 degrees is arranged at the opening of the third forming lower die 17, and the inclined plane 23 is connected with an arc transition surface 24, so that the forming friction force can be reduced, and the service life of the third forming lower die 17 is improved by 3 times at least. Thereby reducing the pull marks, the single side of the height of two sides and the like of the product produced due to large friction force.
The lower die part is additionally provided with an ejector rod 14, so that a product can be ejected smoothly (if the ejector rod 14 is not arranged, the product is easy to turn and is clamped in a lower die cavity when being ejected by the ejector plate 9 alone), and the ejector rod 14 is designed into a square shape, so that the ejector rod 14 can be prevented from rotating, and the product is prevented from being stamped (because the upper end surface of the ejector rod 14 is provided with a slope the same as that of the second forming lower die 13).
The double-side clearance between the ejector rod 12 and the ejector rod hole of the lower backing plate 15 is 0.18-0.20 mm, so that the positioning accuracy of the top plate 9 is ensured, the product quality is ensured, and the top plate 9 can smoothly move up and down. The double-sided clearance between the guide pillar 6 and the guide sleeve 2 is 0.13-0.15 mm.
Further, the machining process of the automobile rear axle control rod support forming die comprises the following steps of:
the method comprises the following steps: mounting a forming die of a control rod bracket of an automobile rear axle on a single-action four-column 200T hydraulic press with an ejection cylinder;
step two: starting an ejection cylinder of the hydraulic machine to be opened to the position of the highest point of the stroke, ejecting an ejector rod 12 and an ejector rod 14 by the ejection cylinder, ejecting a top plate 9 by the ejector rod 12, and enabling the upper surface of the top plate 9 to be 1.0mm higher than the upper surface of a third forming lower die 17, and enabling the highest upper surface of the ejector rod 14 to be 2-3 mm lower than the upper surface of the third forming lower die 17;
step three: placing a prefabricated control rod bracket 18 after blanking, blanking and punching processes on the upper surface of a top plate 9, and positioning two U-shaped holes 19 of a product by using a first positioning pin 10 and a second positioning pin 11 respectively;
step four: starting a hydraulic press, enabling an upper template 1 to move downwards along with an upper workbench of a machine tool, enabling a forming upper die 5 and a top plate 9 to firstly press a product under the action of a jacking cylinder, then continuously moving downwards along with the upper template 1 until the lower surface of the top plate 9 contacts the upper surface of a lower cushion plate 15, and enabling the forming upper die 5, a first forming lower die 8, a second forming lower die 13 and a third forming lower die 17 to finish the product forming process;
step five: after the product is formed and processed, the upper workbench of the hydraulic press drives the upper half part of the die to return, the product is left in the lower die cavity, then an ejection cylinder of the hydraulic press is started to be opened to the position of the highest point of the stroke, the ejection cylinder ejects an ejector rod 12 and an ejector rod 14, the ejector rod 12 ejects a top plate 9, the top plate 9 and the ejector rod 14 eject the product 20, the product 20 is taken out by using an auxiliary tool, and the product 20 is placed in a material box;
step six: and repeating the operations from the second step to the fifth step to manufacture the next workpiece.
In order to control the amount of deformation of the bent portion of the product 20 after bending, the connecting arc of the bent portion needs to be increased when the product 20 is unfolded (i.e., blanked).
In addition, the two ejector rods 12 are arranged diagonally, firstly, the positioning pins on the ejector top plate 9 are avoided, secondly, the ejection force is ensured to be uniform, and the top plate 9 is prevented from being clamped.
First shaping lower mould 8, second shaping lower mould 13 separately set up, firstly for practicing thrift mould development cost, secondly for mould easy maintenance, swift. The clearance between the top plate 9 and the two surfaces of the first lower forming die 8 and the second lower forming die 13 is 0.18-0.2 mm, so that the phenomenon that the product is pressed out due to overlarge gaps at the joints of the parts of the die can be avoided, and the top plate 9 can smoothly run up and down.
In conclusion, the die adopts the lug boss and the groove for automatically correcting the die gap, and the lower die is additionally provided with the ejector rod and other structures, so that the service life of the die is prolonged by 5 times, the production cost is reduced, and the product quality is stable; the traditional five processes are optimized into four processes, so that the production efficiency is improved.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A forming die for a control rod bracket of an automobile rear axle comprises an upper die structure and a lower die structure, and is characterized in that the upper die structure comprises an upper die plate (1), a guide sleeve (2), an upper base plate (3), an upper fixing plate (4) and a forming upper die (5);
the lower die structure comprises a lower fixing plate (7), a first forming lower die (8), a top plate (9), an ejector rod (12), a second forming lower die (13), an ejector rod (14), a lower backing plate (15), a lower die plate (16) and a third forming lower die (17);
the upper forming die (5) is arranged in a fixing cavity of the upper fixing plate (4), the upper end face of the upper forming die (5) is connected with the upper backing plate (3), the guide sleeves (2) are arranged in guide sleeve holes at two sides of the upper die plate (1), and the upper backing plate (3) is fixedly arranged between the upper die plate (1) and the upper fixing plate (4);
the third forming lower die (17) is arranged on the upper side and the lower side of a fixing cavity of the lower fixing plate (7), and are respectively connected with the lower fixing plate (7) through bolts from the side edges, the first lower forming die (8) and the second lower forming die (13) are arranged at the left side and the right side of a fixing cavity of the lower fixing plate (7), the bottom of the top plate (9) is connected with a mandril (12), the mandril (12) is arranged in the mandril holes corresponding to the lower cushion plate (15) and the lower template (16) through clearance fit, the top plate (9) is arranged in a cavity formed by the first lower forming die (8), the second lower forming die (13) and the third lower forming die (17) in a clearance fit mode, and the ejector rod (14) penetrates through the corresponding ejector rod holes of the second forming lower die (13), the lower backing plate (15) and the lower die plate (16) in a clearance fit manner.
2. The forming die for the automobile rear axle control rod bracket as recited in claim 1, wherein the lower die structure further comprises a guide pillar (6), a first positioning pin (10) and a second positioning pin (11), the guide pillar (6) is installed in guide pillar holes at two sides of the lower die plate (16) through interference fit, and the first positioning pin (10) and the second positioning pin (11) are respectively installed in corresponding positioning pin fixing holes of the top plate (9) through interference fit.
3. The forming die for the automobile rear axle control rod bracket as recited in claim 1 or 2, wherein two ends of the upper forming die (5) are respectively provided with a boss (21) for automatically correcting the die gap, a groove (22) for automatically correcting the die gap is arranged between the first lower forming die (8) and the second lower forming die (13), and the double-sided gap between the boss for automatically correcting the die gap of the upper forming die (5) and the grooves for automatically correcting the die gap of the first lower forming die (8) and the second lower forming die (13) is 0.08-0.10 mm.
4. The automobile rear axle control rod bracket forming die as claimed in claim 3, wherein the first forming lower die (8), the second forming lower die (13) and the third forming lower die (17) are all of an embedded structure, the lower fixing plate (7) is of a monolithic structure, and the first forming lower die (8), the second forming lower die (13) and the third forming lower die (17) are fixed in a cavity of the lower fixing plate (7) through interference fit.
5. The forming die for the automobile rear axle control rod bracket according to claim 3, characterized in that an opening of the third forming lower die (17) is provided with an inclined plane (23) with an inclination angle of 30 degrees, and the inclined plane (23) is connected with an arc transition surface (24).
6. The automobile rear axle control rod support forming die as claimed in claim 3, characterized in that the section of the ejector beam (14) is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123106723.4U CN216397751U (en) | 2021-12-10 | 2021-12-10 | Automobile rear axle control rod support forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123106723.4U CN216397751U (en) | 2021-12-10 | 2021-12-10 | Automobile rear axle control rod support forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216397751U true CN216397751U (en) | 2022-04-29 |
Family
ID=81283673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123106723.4U Active CN216397751U (en) | 2021-12-10 | 2021-12-10 | Automobile rear axle control rod support forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216397751U (en) |
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2021
- 2021-12-10 CN CN202123106723.4U patent/CN216397751U/en active Active
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