CN109013971B - One-step forming die and machining process for left and right parts of automobile driving rear axle support - Google Patents
One-step forming die and machining process for left and right parts of automobile driving rear axle support Download PDFInfo
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- CN109013971B CN109013971B CN201810867899.5A CN201810867899A CN109013971B CN 109013971 B CN109013971 B CN 109013971B CN 201810867899 A CN201810867899 A CN 201810867899A CN 109013971 B CN109013971 B CN 109013971B
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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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
- B21D45/04—Ejecting devices interrelated with motion of tool
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Abstract
The invention relates to a one-step forming die and a processing technology for left and right pieces of a rear axle bracket of an automobile drive, comprising an upper die part and a lower die part, wherein the upper die part comprises an upper template, a guide sleeve, an upper die base plate, an upper die fixing plate, a discharging spring, a forming upper die and a knockout rod; the lower die part comprises a guide pillar, a lower die fixing plate, a forming lower die, a positioning core, a material ejecting plate, a lower die base plate, a lower die plate and an ejector rod. The process for forming the bracket by the mold comprises the following steps: step 1: installing the left and right part molds of the once-formed product of the automobile drive rear axle bracket on a single-action four-column 100T hydraulic press with an ejection cylinder; step 2: and starting the hydraulic machine, starting the ejection cylinder of the hydraulic machine, ejecting the ejector rod by the ejection cylinder, ejecting the ejector plate by the ejector rod, and enabling the upper surface of the ejector plate to be 1.0mm higher than the upper surface of the lower forming die. The mould improves the precision, the service life and the product quality of the mould by adopting a lug boss and a groove for automatically correcting the clearance of the mould and additionally arranging a knockout device and other structures on the upper mould part.
Description
Technical Field
The invention belongs to the field of mechanical equipment, relates to a manufacturing die for a left bracket and a right bracket, and particularly relates to a one-step forming die for a left part and a right part of a rear axle bracket of an automobile drive and a processing technology.
Background
The automobile driving rear axle support is welded on an automobile driving axle housing body and mainly used for connecting an automobile longitudinal pull rod and installing and fixing an automobile wire harness, controlling the installation position of the wire harness, avoiding the interference of the wire harness and peripheral parts, limiting the trend of the wire harness, improving the connection reliability, simplifying the process assembly and improving the assembly efficiency. The bracket is processed by five working procedures according to the traditional production mode, and the process flow is as follows: blanking → punching → bending left piece → bending right piece to meet the design requirement of the product, thus using the traditional production process, the production efficiency is lower, the production time is longer, and the left and right pieces of the product are easy to be unilateral in the production quantity (i.e. the left and right pieces are divided into half by the manual calculation). Based on the optimization consideration of the production process in the prior art, the left and right part molds of the bracket one-step forming product are designed, the traditional one-step forming product is changed into the one-step forming of the left and right parts of the product, and the forming process of the product is stable, so that the left and right part molds of the automobile driving rear axle bracket one-step forming product can be designed, and the production efficiency and the product quality of the product are improved, which is necessary.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a one-step forming die and a machining process for left and right parts of an automobile driving rear axle bracket.
In order to achieve the purpose, the invention adopts the technical scheme that:
a left and right piece die for a once-formed product of an automobile drive rear axle support comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die plate, a guide sleeve, an upper die base plate, an upper die fixing plate, a discharging spring, a forming upper die and a knockout rod;
the lower die part comprises a guide pillar, a lower die fixing plate, a forming lower die, a positioning core, an ejector plate, a lower die base plate, a lower die plate and an ejector rod, wherein the forming upper die is arranged in a fixing cavity of the upper die fixing plate in an interference fit manner, the upper end surface of the forming upper die is connected with the upper die base plate through a bolt, a guide sleeve is arranged in guide sleeve holes at two sides of the upper die plate in an interference fit manner, two knockout rods are directly arranged in knockout rod holes corresponding to the forming upper die in a clearance fit manner, a discharge spring is pre-compressed and arranged in discharge holes corresponding to the forming upper die and the upper die base plate, and the upper die plate and the upper die base plate;
two lower moulds that take shape are adorned in the fixed form chamber of lower mould fixed plate through interference fit to the side passes through the bolt and is connected with the lower mould fixed plate, the guide pillar passes through interference fit dress in the guide pillar hole on lower bolster both sides, the lower bolster, the lower mould backing plate passes through the bolt and the locating pin is connected with the lower mould fixed plate, four ejector pins directly place in the ejector pin hole that lower mould backing plate and lower bolster respectively correspond through clearance fit, four location cores are adorned respectively in each fixed orifices of kicking plate through interference fit, the kicking plate directly places in the kicking plate chamber that lower mould fixed plate and shaping lower mould are constituteed through clearance fit.
Furthermore, the upper end and the lower end of the upper forming die of the upper die part are respectively provided with a boss for automatically correcting the die gap, the upper end and the lower end of the lower die fixing plate of the lower die part are respectively provided with a groove for automatically correcting the die gap, and the double-sided gap between the boss for automatically correcting the die gap of the upper forming die and the groove for automatically correcting the die gap of the lower die fixing plate is 0.08-0.10 mm.
Further, the lower forming die is of an embedded structure, the lower die fixing plate is of an integral structure, and the lower forming die is fixed in the lower die fixing plate in an interference fit mode.
Further, the forming lower die is designed to have an inclination of 30 degrees, and two sides of the forming lower die are in arc transition.
Furthermore, the upper end and the lower end of the ejector plate are respectively provided with a guide boss, the clearance between the guide bosses and the two sides of the groove for automatically correcting the clearance between the upper die fixing plate and the lower die fixing plate is 0.14-0.16 mm, and the clearance between the guide bosses and the two sides of the other parts of the ejector plate is 0.38-0.40 mm.
Furthermore, the upper die part is additionally provided with a knockout device, and the knockout device comprises a knockout rod and a discharge spring.
The process for forming the left and right parts of the automobile drive rear axle bracket one-step formed product by the die comprises the following steps:
step 1: installing the left and right part molds of the once-formed product of the automobile drive rear axle bracket on a single-action four-column 100T hydraulic press with an ejection cylinder;
step 2: starting the hydraulic press, starting an ejector cylinder of the hydraulic press, ejecting an ejector rod by the ejector cylinder, ejecting an ejector plate by the ejector rod, and enabling the upper surface of the ejector plate to be 1.0mm higher than the upper surface of the forming lower die;
and 3, step 3: placing two products of the prefabricated support after blanking and punching processes on the left side and the right side of the ejector plate, and respectively fixing two inner holes of the products by using positioning cores;
and 4, step 4: starting a hydraulic machine, enabling an upper die plate to move downwards along with an upper workbench of a machine tool, firstly compressing a product by a forming upper die and a material ejecting plate under the action of a cylinder jacking force, and then continuously moving the forming upper die downwards to complete a product forming process with a forming lower die and the material ejecting plate;
and 5, step 5: after the left and right supports are formed and processed, the upper workbench of the hydraulic press drives the upper half part of the die to return, the material beating rod unloads a product under the action of an unloading spring, the product is left on the ejector plate, then the ejector cylinder of the hydraulic press is started, the ejector cylinder ejects an ejector rod, the ejector rod ejects the ejector plate, the ejector plate ejects the product, and the product is taken out by using an auxiliary tool and is placed into a material box;
and 6, step 6: and (5) repeating the operations from the step 2 to the step 5 to manufacture the next two products.
The invention has the beneficial effects that: the mould adopts the lug boss and the groove for automatically correcting the clearance of the mould, and the upper mould part is additionally provided with the structure of a knockout device and the like so as to improve the precision, the service life and the product quality of the mould.
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 mold portion of the present invention;
FIG. 3 is a schematic view of the upper forming die of the inventive die;
FIG. 4 is a schematic structural view of a lower die fixing plate of the die of the present invention;
FIG. 5 is a schematic view of the ejector plate structure of the mold of the present invention;
FIG. 6 is a schematic view of the lower forming die of the inventive die;
FIG. 7 is a schematic view of the structure of the stent workpiece of the present invention.
In the figure: the device comprises an upper template 1, a guide sleeve 2, an upper die base plate 3, an upper die fixing plate 4, a discharging spring 5, a forming upper die 6, a knockout rod 7, a guide pillar 8, a lower die fixing plate 9, a forming lower die 10, a positioning core 11, a material ejecting plate 12, a lower die base plate 13, a lower template 14 and an ejector rod 15.
Detailed Description
As shown in fig. 1 to 7, a left and right piece mold of a one-step formed product of a rear axle bracket for a vehicle drive, the mold is divided into an upper mold part and a lower mold part, the upper mold part comprises: cope match-plate pattern 1, guide pin bushing 2, last die pad board 3, last fixed plate 4, discharge spring 5, take shape go up mould 6 and knockout pin 7, and the lower mould part includes: the device comprises a guide post 8, a lower die fixing plate 9, a forming lower die 10, a positioning core 11, a material ejecting plate 12, a lower die backing plate 13, a lower die plate 14 and an ejector rod 15. The forming upper die 6 is arranged in a fixed cavity of the upper die fixing plate 4 in an interference fit manner, the upper end face of the forming upper die is connected with the upper die base plate 3 through a bolt, the guide sleeve 2 is arranged in guide sleeve holes at two sides of the upper die plate 1 in an interference fit manner, the two knockout rods 7 are directly arranged in corresponding knockout rod holes of the forming upper die 6 in a clearance fit manner, the discharging springs 5 are pre-compressed and arranged in corresponding discharging holes of the forming upper die 6 and the upper die base plate 3, and the upper die plate 1 and the upper die base plate 3 are connected with the upper die fixing plate 4 through bolts and positioning pins; two shaping lower moulds 10 are installed in the fixed cavity of the lower mould fixed plate 9 through interference fit, and the side is connected with the lower mould fixed plate 9 through bolts, the guide post 8 is installed in the guide post hole on both sides of the lower mould plate 14 through interference fit, the lower mould plate 14, the lower mould backing plate 13 is connected with the lower mould fixed plate 9 through bolts and positioning pins, four ejector rods 15 are directly placed in ejector rod holes corresponding to the lower mould backing plate 13 and the lower mould plate 14 through clearance fit, four positioning cores 11 are respectively installed in the fixing holes of the ejector plate 12 through interference fit, and the ejector plate 12 is directly placed in the ejector plate cavity formed by the lower mould fixed plate 9 and the shaping lower moulds 10 through clearance fit.
The upper end and the lower end of the upper forming die 6 of the upper die part are respectively provided with a boss 61 for automatically correcting the die gap, the upper end and the lower end of the lower die fixing plate 9 of the lower die part are respectively provided with a groove for automatically correcting the die gap, and the double-sided gap between the boss 61 for automatically correcting the die gap of the upper forming die 6 and the groove 91 for automatically correcting the die gap of the lower die fixing plate 9 is 0.08-0.10 mm, so that the uniformity of the upper die gap and the lower die gap is not controlled by the manual skill of a bench worker, but is ensured by the machining precision of a machine tool, thereby improving the manufacturing precision of the die.
The forming lower die 10 is embedded, the lower die fixing plate 9 is integral, and the forming lower die 10 is fixed in the lower die fixing plate 9 through interference fit, so that the material cost of the forming lower die 10 can be saved, the strength of the forming lower die 10 can be improved, and the service life of the die is prolonged.
The forming lower die 10 is designed to have an inclination of 30 degrees, and then two sides are in arc transition (while the traditional forming lower die is in direct arc transition), so that the forming friction force can be reduced, the service life of the forming lower die 10 is improved by 5 times at least, and pull marks and the like produced by products due to large friction force are reduced.
The upper end and the lower end of the ejector plate 12 are respectively provided with a guide boss 121, the clearance between the ejector plate and the two sides of the groove 91 of the lower die fixing plate 9 for automatically correcting the die clearance is 0.14-0.16 mm, and the clearance between the ejector plate 12 and the two sides of other parts is 0.38-0.40 mm, so that the positioning accuracy of the ejector plate 12 is ensured, the product quality is ensured, and the ejector plate 12 runs smoothly up and down (namely, the contact surface is reduced).
The die simultaneously forms the left and right parts of the product (namely two products) at one time, so that the uniform stress of the die is ensured, the die abrasion is reduced, the service life of the die is prolonged, and the left and right parts of the product can be prevented from being unilateral in manufacturing quantity (if the die does not simultaneously manufacture the left and right parts of the product at one time, the half division is carried out by manual operation, and the left and right parts are not manufactured in each procedure in the front of the product).
The upper die part is additionally provided with a knockout device (namely a knockout rod 7 and a discharge spring 5) to prevent the workpiece from sticking to the upper die.
Take processing of a rear axle bracket of a land wind X8 gasoline automobile drive as an example.
This kind of land wind X8 gasoline automobile drive rear axle support is made by the hot rolled plate of 4.0mm thickness through stamping process, just can be directly used for the shaping processing of the left and right piece mould of support one shot forming product after unloading, blanking, the process of punching a hole:
step 1: installing the left and right part molds of the once-formed product of the automobile drive rear axle bracket on a single-action four-column 100T hydraulic press with an ejection cylinder;
step 2: starting the hydraulic press, starting the ejection cylinder of the hydraulic press, ejecting the ejector rod 15 by the ejection cylinder, ejecting the ejector plate 12 by the ejector rod 15, and enabling the upper surface of the ejector plate 12 to be 1.0mm higher than the upper surface of the forming lower die 10;
and 3, step 3: placing two products of the prefabricated support after blanking and punching processes on the left side and the right side of the ejector plate 12, and respectively fixing two inner holes of the products by using the positioning cores 11;
and 4, step 4: starting a hydraulic press, enabling the upper template 1 to move downwards along with an upper workbench of a machine tool, firstly compressing a product by the upper forming die 6 and the ejector plate 12 under the action of a cylinder jacking force, and then enabling the upper forming die 6 to continuously move downwards to complete a product forming process with the lower forming die 10 and the ejector plate 12;
and 5, step 5: after the left and right supports are formed and processed, the upper workbench of the hydraulic press drives the upper half part of the die to return, the material beating rod 7 unloads a product under the action of the unloading spring 5, so that the product is left on the ejector plate 12, then the ejector cylinder of the hydraulic press is started, the ejector cylinder ejects the ejector rod 15, the ejector plate 12 is ejected by the ejector rod 15, the left workpiece 16 and the right workpiece 17 of the product are ejected by the ejector plate 12, and the product is taken out by an auxiliary tool and put into a material box;
and 6, step 6: and (5) repeating the operations from the step 2 to the step 5 to manufacture the next two products.
After the land wind X8 gasoline automobile driving rear axle bracket uses the one-step product left and right piece forming process and the forming die, the forming related equal sizes are all in the tolerance range, and the land wind X8 gasoline automobile driving rear axle bracket can be continuously and stably ensured to meet the design requirements of product drawings. The traditional method for simultaneously manufacturing the left and right products by only forming one product at one time is optimized, the production efficiency is improved by 78%, the die adopts a boss and a groove for automatically correcting the gap of the die, and the upper die part is additionally provided with a knockout device and other structures, so that the service life of the die is prolonged by 4 times, the production cost is reduced, and the quality of a workpiece is stable. The support can continuously and stably ensure that the driving rear axle support of the land wind X8 gasoline automobile meets the design requirements of the product drawing.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A one-step forming die for left and right parts of an automobile driving rear axle bracket comprises an upper die part and a lower die part, wherein the upper die part comprises an upper template, a guide sleeve, an upper die base plate, an upper die fixing plate, a discharging spring, a forming upper die and a material beating rod;
the lower die part comprises a guide pillar, a lower die fixing plate, a forming lower die, a positioning core, an ejector plate, a lower die base plate, a lower die plate and an ejector rod, and is characterized in that the forming upper die is arranged in a fixing cavity of the upper die fixing plate in an interference fit manner, the upper end face of the forming upper die is connected with the upper die base plate through a bolt, a guide sleeve is arranged in guide sleeve holes at two sides of an upper die plate in an interference fit manner, two knockout rods are directly arranged in knockout rod holes corresponding to the forming upper die in a clearance fit manner, a discharge spring is pre-compressed and arranged in discharge holes corresponding to the forming upper die and the upper die base plate, and the upper die plate and the upper die base plate;
the two forming lower dies are arranged in a fixed cavity of a lower die fixing plate in an interference fit manner, the side edges of the two forming lower dies are connected with the lower die fixing plate through bolts, guide pillars are arranged in guide pillar holes at two sides of a lower die plate in the interference fit manner, the lower die plate and a lower die base plate are connected with the lower die fixing plate through bolts and positioning pins, four ejector rods are directly arranged in ejector rod holes corresponding to the lower die base plate and the lower die plate through clearance fit, four positioning cores are respectively arranged in fixing holes of an ejector plate through the interference fit manner, and the ejector plate is directly arranged in an ejector plate cavity formed by the lower die fixing plate and the forming lower dies through the clearance fit; the forming lower die is of an embedded structure, the lower die fixing plate is of an integral structure, the forming lower die is fixed in the lower die fixing plate in an interference fit mode, the forming lower die is designed to be 30-degree inclined, and two sides of the forming lower die are in arc transition.
2. The mold for one-step forming of left and right parts of a bracket for a rear axle of a vehicle drive according to claim 1, wherein the upper and lower ends of the upper mold for forming of the upper mold portion are respectively provided with a boss for automatically correcting the mold gap, the upper and lower ends of the lower mold fixing plate of the lower mold portion are respectively provided with a groove for automatically correcting the mold gap, and a gap between the boss for automatically correcting the mold gap of the upper mold for forming and the groove for automatically correcting the mold gap of the lower mold fixing plate is 0.08 to 0.10mm on both sides.
3. The mold for one-step forming of left and right parts of a bracket of a rear axle for a vehicle drive according to claim 1, wherein the upper and lower ends of the ejector plate are respectively provided with a guide boss, and a clearance between the ejector plate and the lower automatic correction mold is 0.14-0.16 mm on both sides of the groove on the upper and lower fixing plates of the lower mold, and a clearance between the ejector plate and the other parts of the ejector plate is 0.38-0.40 mm on both sides.
4. The process for machining the bracket by the one-step forming die for the left and right parts of the automobile drive rear axle bracket based on the claim 1 is characterized by comprising the following steps of:
step 1: installing the left and right part molds of the once-formed product of the automobile drive rear axle bracket on a single-action four-column 100T hydraulic press with an ejection cylinder;
step 2: starting the hydraulic press, starting an ejector cylinder of the hydraulic press, ejecting an ejector rod by the ejector cylinder, ejecting an ejector plate by the ejector rod, and enabling the upper surface of the ejector plate to be 1.0mm higher than the upper surface of the forming lower die;
and 3, step 3: placing two products of the prefabricated support after blanking and punching processes on the left side and the right side of the ejector plate, and respectively fixing two inner holes of the products by using positioning cores;
and 4, step 4: starting a hydraulic machine, enabling an upper die plate to move downwards along with an upper workbench of a machine tool, firstly compressing a product by a forming upper die and a material ejecting plate under the action of a cylinder jacking force, and then continuously moving the forming upper die downwards to complete a product forming process with a forming lower die and the material ejecting plate;
and 5, step 5: after the left and right supports are formed and processed, the upper workbench of the hydraulic press drives the upper half part of the die to return, the material beating rod unloads a product under the action of an unloading spring, the product is left on the ejector plate, then the ejector cylinder of the hydraulic press is started, the ejector cylinder ejects an ejector rod, the ejector rod ejects the ejector plate, the ejector plate ejects the product, and the product is taken out by using an auxiliary tool and is placed into a material box;
and 6, step 6: and (5) repeating the operations from the step 2 to the step 5 to manufacture the next two products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867899.5A CN109013971B (en) | 2018-08-02 | 2018-08-02 | One-step forming die and machining process for left and right parts of automobile driving rear axle support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867899.5A CN109013971B (en) | 2018-08-02 | 2018-08-02 | One-step forming die and machining process for left and right parts of automobile driving rear axle support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109013971A CN109013971A (en) | 2018-12-18 |
| CN109013971B true CN109013971B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810867899.5A Active CN109013971B (en) | 2018-08-02 | 2018-08-02 | One-step forming die and machining process for left and right parts of automobile driving rear axle support |
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| CN (1) | CN109013971B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114603019B (en) * | 2022-02-25 | 2024-07-05 | 浙江顺势科技有限公司 | Stamping die for processing battery copper bar |
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| CN205289448U (en) * | 2015-12-04 | 2016-06-08 | 武汉市神风汽车工业有限责任公司 | New forms of energy car battery frame curb plate press die |
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| CN207325765U (en) * | 2017-11-02 | 2018-05-08 | 江西江铃底盘股份有限公司 | A kind of rear axle spring panel seat imprint mold |
| CN207547396U (en) * | 2017-12-06 | 2018-06-29 | 江西江铃底盘股份有限公司 | A kind of Automobile drive rear axle latch plate is located in material-punching composite die |
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2018
- 2018-08-02 CN CN201810867899.5A patent/CN109013971B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5874361B2 (en) * | 2011-12-05 | 2016-03-02 | 日本精工株式会社 | Manufacturing method of steering device |
| CN204892713U (en) * | 2015-07-23 | 2015-12-23 | 高密市豪沃机械科技有限公司 | Duplex position stamping die suitable for car body spare joint production |
| CN205289448U (en) * | 2015-12-04 | 2016-06-08 | 武汉市神风汽车工业有限责任公司 | New forms of energy car battery frame curb plate press die |
| CN107617681A (en) * | 2017-11-02 | 2018-01-23 | 江西江铃底盘股份有限公司 | A kind of hind axle pipe holder plate chamfering leveling composite die and technique |
| CN207325765U (en) * | 2017-11-02 | 2018-05-08 | 江西江铃底盘股份有限公司 | A kind of rear axle spring panel seat imprint mold |
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| CN109013971A (en) | 2018-12-18 |
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