CN110814169A - Necking and bulging multi-station combined die and technology for elastic spacer bush of automobile driving rear axle - Google Patents
Necking and bulging multi-station combined die and technology for elastic spacer bush of automobile driving rear axle Download PDFInfo
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- CN110814169A CN110814169A CN201911139634.4A CN201911139634A CN110814169A CN 110814169 A CN110814169 A CN 110814169A CN 201911139634 A CN201911139634 A CN 201911139634A CN 110814169 A CN110814169 A CN 110814169A
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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
- B21D37/08—Dies with different parts for several steps in a process
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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
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Abstract
The invention relates to a multi-station combined die for necking and bulging an elastic spacer bush of an automobile drive rear axle, which is divided into an upper half part of the die and a lower half part of the die, wherein the upper half part of the die comprises: the device comprises an upper template, a gasket, a guide sleeve, a discharging spring, an upper base plate, an upper fixing plate, an expansion upper limiting block, a necking guide core and an expansion upper die; the lower half of the mould comprises: the device comprises a guide pillar, a necking positioning plate, a lower fixing plate, a necking female die, a necking lower top plate, a mandril, an bulging lower die, a bulging lower limiting block, a lower base plate and a lower die plate. The die adopts the die correction spigot for automatically correcting the bulging clearance of the die, and the upper die is provided with the discharging spring, so that a bulging workpiece cannot be stuck to the bulging upper die in a medium structure, the traditional two single-step process is combined into a multi-station combined process, the production efficiency is improved by 47 percent, the service life of the die is improved by 2.6 times, and the product quality is stable.
Description
Technical Field
The invention belongs to the field of mechanical equipment, relates to a manufacturing die for an elastic spacer, and particularly relates to a necking and bulging multi-station combined die for an elastic spacer of a rear axle of an automobile drive and a combined process.
Background
The pre-tightening force of the main gear bearing of the rear axle reducer has great influence on the performance of the whole axle. Generally speaking, the main gear bearing clearance adjustment has two assembly forms, namely a rigid spacer bush and an elastic spacer bush. The elastic spacer bush can automatically adjust the pretightening force of the bearing within a certain range, and can adjust the pretightening force of the bearing to an optimal state, so that the over-tight assembly of the bearing or the axial movement generated by the over-loose of the bearing is avoided, the noise of the main reducer assembly is reduced, and the quality of the main reducer assembly is improved; meanwhile, the main tooth nut can be prevented from loosening due to elasticity; in addition, the elastic spacer sleeve can also solve the trouble of assembling and adjusting the gear bearing, reduce the times of trying to add the gasket, reduce the labor intensity and improve the production efficiency; is an ideal product for replacing the rigid spacer.
The applicant has applied for a plurality of molds related to elastic spacers, for example, chinese patent publication nos. CN102139303B, CN204148362U, and CN109013872A, wherein CN109013872A discloses a multi-station mold for elastic spacers of front axles of automobiles, which comprises an upper mold part and a lower mold part, wherein the upper mold part comprises an upper mold plate, a guide sleeve, an upper padding plate, a discharge spring, an upper limit rod, an upper fixing plate, a material beating rod, a pre-necking female mold and a necking female mold; the lower die part comprises a guide pillar, a pre-expansion necking male die, a discharging sleeve, a pre-expansion necking discharging block, a lower fixing plate, a lower backing plate, a lower limiting rod, a lower die plate and a push rod, wherein the pre-expansion necking female die and the necking female die are respectively arranged in corresponding fixing holes of the upper fixing plate through interference fit; the pre-necking-and-necking-in male die and the necking-in male die are respectively arranged in corresponding fixing holes of the lower fixing plate through interference fit, guide pillars are arranged in guide pillar holes at two sides of the lower template through interference fit, two lower limiting rods are fixed at two sides of the lower template through bolts from the lower end face, the lower template and the lower backing plate are connected with the lower fixing plate through bolts and positioning pins, a pre-necking-unloading block and a necking-in-necking-in unloading block are respectively arranged in corresponding fixing holes of the unloading sleeve through interference fit, five ejector rods are directly arranged in corresponding ejector rod holes of the lower fixing plate, the lower backing plate and the lower template through clearance fit, and an unloading sleeve assembly passes through the pre-necking-and-necking-male die through clearance fit and is directly arranged on the lower fixing plate. The die is mainly suitable for processing the stepped expansion and contraction port, but is not suitable for processing the contraction port and the bulging in the middle of the elastic spacer bush.
In addition, the elastic spacer bush is processed by five working procedures according to the traditional production mode, and the process flow is as follows: blanking → rough turning long → necking → bulging → fine turning long to meet the design requirement of products, and because the production batch of the elastic spacer sleeves is large, the traditional production process is used, not only is the number of the dies required to be installed large and the production time is long, but also multiple material distribution among multiple devices is required, and the production efficiency is low. Based on the optimization consideration of the production process in the prior art, the invention designs the elastic spacer necking and bulging multi-station combined die, combines a plurality of dies with single-step structures into the multi-station die, and simultaneously realizes two different stamping processing actions of necking and bulging on the same pair of dies for the product, so that the production efficiency and the product quality of the product can be improved by designing the elastic spacer necking and bulging multi-station combined die for the rear axle of the automobile.
Disclosure of Invention
One of the purposes of the invention is to provide a multi-station combination die for necking and bulging an elastic spacer bush of a rear axle of an automobile drive, wherein a die correction spigot for automatically correcting a bulging gap of the die is adopted, and a discharging spring is arranged on an upper die, so that a bulging workpiece cannot be stuck on a bulging upper die in a medium structure, and the service life of the die and the product quality are improved. The necking and bulging multi-station combined die is arranged on a hydraulic machine to perform necking and bulging combined processing on the elastic spacer bush.
The invention also aims to design a multi-station combination die for necking and bulging the elastic spacer bush to replace the traditional multi-station combination process of two single-step dies (namely a necking single-step die and a bulging single-step die).
One of the objects of the invention is achieved by:
the utility model provides an automobile drive rear axle elasticity spacer throat and bulging multistation assembling die, this mould divide into the latter half of the first half of mould and mould, and the first half of mould includes: the device comprises an upper template, a gasket, a guide sleeve, a discharging spring, an upper base plate, an upper fixing plate, an expansion upper limiting block, a necking guide core and an expansion upper die;
the lower half of the mould comprises: the device comprises a guide pillar, a necking positioning plate, a lower fixing plate, a necking female die, a necking lower top plate, a top rod, an bulging lower die, a bulging lower limiting block, a lower backing plate and a lower die plate;
the necking guide core and the bulging upper die are respectively arranged in corresponding fixing holes of the upper fixing plate through interference fit, the bulging upper limiting block is directly arranged in corresponding material beating holes of the bulging upper die and the upper backing plate through clearance fit, the discharging spring is pre-compressed and arranged in corresponding discharging holes of the bulging upper limiting block, the gasket and the upper die plate, the guide sleeve is arranged in guide sleeve holes at two sides of the upper die plate through interference fit, and the upper die plate, the gasket and the upper backing plate are connected with the upper fixing plate through bolts and positioning pins;
the necking die and the bulging lower die are respectively arranged in fixing holes of the lower fixing plate in a corresponding mode through interference fit, the necking positioning plate is arranged on a fixed spigot of the upper end face of the necking die in the interference fit mode and is connected with the necking die through a bolt from the upper end face, guide pillars are arranged in guide pillar holes in two sides of the lower die plate in the interference fit mode, the lower die plate and the lower die plate are connected with the lower fixing plate through bolts and positioning pins, the ejector rods are directly arranged in ejector rod holes corresponding to the lower die plate and the lower die plate in a corresponding mode through clearance fit, a necking lower ejector plate is directly arranged in a middle cavity of the necking die through clearance fit, and a bulging lower limiting block is directly arranged in a middle cavity of the bulging lower die through clearance fit.
Furthermore, a fixing groove is additionally arranged on the lower end face of the necking positioning plate and is tightly matched with a fixing spigot on the upper end face of the necking female die, the coaxiality of the necking positioning plate and the necking female die is guaranteed, and a necking guide core is additionally arranged on the necking upper die part, so that the effect of guiding a product is achieved in the production process.
Furthermore, the bulging lower die is provided with a groove for automatically correcting a bulging gap, the gap between the bulging lower die and the double surfaces of the outer diameter of the bulging upper die is 0.08-0.10 mm, namely when the die reaches a bottom dead center, the lower surface of the bulging upper die is in contact with the upper surface of the groove for correcting the bulging lower die, a guiding effect is achieved in the die production process, and the phenomenon that the upper die and the lower die move to influence the product quality is prevented.
Furthermore, the upper bulging limiting block is additionally arranged on the upper bulging die part, the lower bulging limiting block is additionally arranged on the lower bulging die part, guide bosses are arranged at the front ends of the upper bulging limiting block and the lower bulging limiting block, and a discharging spring is arranged on the upper bulging limiting block to prevent a product from being stuck on the upper bulging die.
Further, the double-sided clearance of the necking lower top plate and the necking female die, the double-sided clearance of the bulging upper limiting block and the bulging upper die, the double-sided clearance of the bulging lower limiting block and the bulging lower die are 0.12-0.14 mm, the necking lower top plate, the bulging upper limiting block and the bulging lower limiting block are made of die steel materials T10A, quenching hardness is HRC 50-55, and the necking lower top plate, the bulging upper limiting block and the bulging lower limiting block are prevented from being pressed and deformed.
Furthermore, the bulging upper limiting block and the upper template are both provided with a hole phi 37 for placing a discharging spring.
Furthermore, the double-sided clearance between the guide pillar and the guide sleeve is 0.14-0.16 mm.
The second technical scheme of the invention is realized as follows:
a technology for combining necking and bulging of an elastic spacer sleeve of an automobile drive rear axle by a multi-station combination die comprises the following steps:
step 1: installing the automobile drive rear axle elastic spacer sleeve necking and bulging multi-station combined die on a single-action four-column 100T hydraulic press with an ejection cylinder;
step 2: opening a jacking cylinder of the hydraulic press to the position of the lowest point of the stroke of the jacking cylinder, and sleeving the outer diameter of the prefabricated elastic spacer after blanking and rough turning processes in a middle positioning hole of the necking positioning plate for positioning;
and 3, step 3: starting a hydraulic press, enabling an upper die plate to move downwards along with an upper workbench of a machine tool, guiding an inner hole of a workpiece by a necking guide core, then continuing to move downwards along with the necking guide core until the lower surface of an upper bulging die contacts the upper surface of a correction clearance groove of a lower bulging die, and completing the necking process processing of the workpiece by the necking guide core, an upper fixing plate and a necking female die;
and 4, step 4: after the workpiece is subjected to necking processing, an upper workbench of the hydraulic machine drives the upper half part of the die to return, the workpiece subjected to necking is left in a middle cavity of a necking female die, then a jacking cylinder of the hydraulic machine is started to be opened to the position of the highest point of the stroke of the hydraulic machine, the jacking cylinder jacks a jacking rod, the jacking rod jacks a necking lower top plate, the necking lower top plate jacks the workpiece (namely the workpiece in a necking process), and the workpiece is taken out by using an auxiliary tool and is placed into a transfer material box;
and 5, step 5: starting a hydraulic press ejection cylinder to reset, so that the ejector rod brings the necking lower top plate and the bulging lower limiting block downwards to the lower plane of the top plate to be in horizontal contact with the upper plane of the lower base plate;
and 6, step 6: sleeving the outer diameter of the elastic spacer after the necking procedure in the first step in a middle cavity of the bulging lower die in a middle rotating material box for positioning, and sleeving the outer diameter of the prefabricated elastic spacer after another blanking and rough turning procedure in a middle positioning hole of the necking positioning plate for positioning;
and 7, step 7: starting a hydraulic press, enabling an upper die plate to move downwards along with a workbench on a machine tool, leading a workpiece inner hole of a necking procedure by a necking guide core, leading a workpiece inner hole of a positive bulging procedure by an upper bulging limiting block under the action of a discharge spring, then continuing to move downwards along with the necking guide core and an upper bulging die until the lower surface of the upper bulging die contacts the upper surface of a correction gap groove of a lower bulging die, finishing the necking procedure processing of the workpiece by the necking guide core, an upper fixing plate and a necking female die, and finishing the bulging procedure processing of the workpiece by the upper bulging die and the lower bulging die;
and 8, step 8: after necking and bulging of the workpiece, driving the upper half part of the die to return by an upper workbench of the hydraulic press, keeping the workpiece in the necking process in a middle shape cavity of a necking female die, keeping the workpiece in the bulging process in a middle shape cavity of a bulging lower die under the action of a discharge spring by an upper bulging limiting block, starting a jacking cylinder of the hydraulic press to be opened to the position of the highest point of the stroke of the hydraulic press, jacking a jacking rod of the jacking cylinder, jacking a lower necking top plate and a lower bulging limiting block of the jacking cylinder, jacking the workpiece in the necking process by a lower necking top plate, jacking the workpiece in the bulging process by a lower bulging limiting block, taking out two products by an auxiliary tool, putting the workpiece in a material box, and putting the workpiece in a material box;
step 9: and (5) repeating the operations from the step 5 to the step 8 to manufacture the lower workpiece.
The invention has the beneficial effects that: the die adopts the die correction spigot for automatically correcting the bulging clearance of the die, and the upper die is provided with the discharging spring, so that a bulging workpiece cannot be stuck to the bulging upper die in a medium structure, the traditional two single-step processes are combined into a multi-station combined process, the production efficiency is improved by 47 percent, the service life of the die is improved by 2.6 times, and the product quality is stable;
the method specifically comprises the following steps: 1. the fixed groove is additionally arranged on the lower end face of the necking positioning plate and is tightly matched with the fixed spigot on the upper end face of the necking female die, so that the coaxiality of the necking positioning plate and the necking female die is guaranteed, the necking upper die part is additionally provided with a necking guide core, the effect of guiding a product is achieved in the production process, and the quality is prevented from being influenced due to inaccurate swinging of product positioning during necking.
2. The bulging lower die is provided with a groove for automatically correcting a bulging gap, and the gap between the bulging lower die and the outer diameter of the bulging upper die is 0.08-0.10 mm, so that the uniformity of the gap between the upper die and the lower die is not controlled by manual skills of a bench worker, but is ensured by the machining precision of a machine tool. Therefore, the uniform clearance of the die is ensured, the die also has a limiting function (namely, when the die reaches a bottom dead center, the lower surface of the upper bulging die is in contact with the upper surface of the correction clearance groove of the lower bulging die), and the die plays a role in guiding in the production process of the die, so that the upper die and the lower die are prevented from moving to influence the product quality.
3. The upper bulging limiting block is additionally arranged on the upper bulging die part, and the lower bulging limiting block is additionally arranged on the lower bulging die part, so that the overall bulging length of a product and the drum-shaped outer diameter of bulging can be ensured. And the front ends of the bulging upper limiting block and the bulging lower limiting block are respectively provided with a guide boss (namely, a guide product inner hole is formed during bulging, the bulging inner hole of a product is prevented from being pressed and deformed, and the like), and the discharging spring is arranged on the bulging upper limiting block, so that the product is prevented from being stuck on an upper die in a bulging manner, and the like.
Drawings
FIG. 1 is a schematic front view of a mold according to example 1 of the present invention;
FIG. 2 is a schematic top view of the lower mold part in accordance with embodiment 1 of the present invention;
FIG. 3 is a schematic view of the rough turning process of the elastic spacer in example 1 of the present invention;
FIG. 4 is a schematic view of the necking process of the elastic spacer in example 1 of the present invention;
fig. 5 is a schematic view of the swelling process of the elastic spacer in example 1 of the present invention.
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.
Example 1: take the processing of the elastic spacer bush of the full-smooth rear axle of the light passenger in the new era of Jiangling as an example:
the structure of the multi-station combined die for necking and bulging of the elastic spacer bush of the completely smooth rear axle of the light passenger in the new Jiangling era is shown in figures 1 and 2: the mould is divided into an upper half part of the mould and a lower half part of the mould; the elastic spacer processing process is shown in figures 3-5;
the upper half of the mold comprises: mould 9 on 1, the packing ring 2 of cope match-plate pattern, guide pin bushing 3, discharge spring 4, upper padding plate 5, an upper fixed plate 6, the spacing piece 7 on the bulging, throat guide core 8 and the bulging, the latter half of mould includes: guide pillar 10, throat locating plate 11, bottom plate 12, throat die 13, throat roof 14, ejector pin 15, bulging lower mould 16, bulging lower stop block 17, lower bolster 18 and lower bolster 19, characterized by: the necking guide core 8 and the bulging upper die 9 are respectively arranged in corresponding fixing holes of the upper fixing plate 6 through interference fit, the bulging upper limiting block 7 is directly arranged in corresponding material beating holes of the bulging upper die 9 and the upper backing plate 5 through clearance fit, the discharging spring 4 is pre-compressed and arranged in corresponding discharging holes of the bulging upper limiting block 7, the gasket 2 and the upper template 1, the guide sleeve 3 is arranged in guide sleeve holes at two sides of the upper template 1 through interference fit, and the upper template 1, the gasket 2 and the upper backing plate 5 are connected with the upper fixing plate 6 through bolts and positioning pins; the necking female die 13 and the bulging lower die 16 are respectively arranged in corresponding fixing holes of the lower fixing plate 12 through interference fit, the necking positioning plate 11 is arranged on an upper end face fixing spigot of the necking female die 13 through interference fit and is connected with the necking female die 13 through a bolt from the upper end face, the guide pillars 10 are arranged in guide pillar holes on two sides of the lower die plate 19 through interference fit, the lower die plate 19 and the lower backing plate 18 are connected with the lower fixing plate 12 through bolts and positioning pins, the two ejector rods 15 are directly arranged in ejector rod holes corresponding to the lower backing plate 18 and the lower die plate 19 through clearance fit, the necking lower ejector plate 14 is directly arranged in a middle cavity of the necking female die 13 through clearance fit, and the bulging lower limiting block 17 is directly arranged in a middle cavity of the bulging lower die 16 through clearance fit.
The fixed groove is additionally arranged on the lower end face of the necking positioning plate 11 and is tightly matched with the fixed spigot of the upper end face of the necking female die 13, so that the coaxiality of the necking positioning plate 11 and the necking female die 13 is guaranteed, the necking upper die part is additionally provided with the necking guide core 8, the effect of guiding a product is achieved in the production process, and the quality is prevented from being influenced due to inaccurate positioning swing of the product during necking.
The bulging lower die 16 is provided with a groove for automatically correcting a bulging gap, and the gap between the bulging lower die and the double surfaces of the outer diameter of the bulging upper die 9 is 0.08-0.10 mm, so that the uniformity of the gap between 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. Thus, the uniform clearance of the die is ensured, the die also has a limiting function (namely, when the die reaches a bottom dead center, the lower surface of the upper bulging die 9 is in contact with the upper surface of the correction clearance groove of the lower bulging die 16), and the die plays a role in guiding in the production process of the die, so that the upper die and the lower die are prevented from moving to influence the product quality.
The upper bulging limiting block 7 is additionally arranged on the upper bulging die part, and the lower bulging limiting block 17 is additionally arranged on the lower bulging die part, so that the overall bulging length and the drum-shaped outer diameter of a product can be ensured. And the front ends of the bulging upper limiting block 7 and the bulging lower limiting block 17 are respectively provided with a guide boss (namely, a pilot product inner hole during bulging to prevent the bulging inner hole of the product from being pressed and deformed and the like), and the discharging spring 4 is arranged on the bulging upper limiting block 7 to prevent the product from bulging to stick to the upper die.
The double-sided clearance of the necking lower top plate 14 and the necking female die 13, the double-sided clearance of the bulging upper limiting block 7 and the bulging upper die 9, the double-sided clearance of the bulging lower limiting block 17 and the bulging lower die 16 are both 0.12-0.14 mm, the necking lower top plate 14, the bulging upper limiting block 7 and the bulging lower limiting block 17 are made of die steel materials T10A, the quenching hardness is HRC 50-55, the strength of the necking lower top plate 14, the bulging upper limiting block 7 and the bulging lower limiting block 17 is improved, and therefore the necking lower top plate 14, the bulging upper limiting block 7 and the bulging lower limiting block 17 are prevented from being pressed to deform to influence the product quality.
The bulging upper limit block 7 and the upper template 1 are both provided with a hole phi 37 for placing the discharging spring 4, so that the closing height of the die can be reduced, and the discharging spring 4 has enough discharging force. The double-sided clearance between the guide pillar 10 and the guide sleeve 3 is 0.14-0.16 mm.
The lower end face of the necking positioning plate 11 is additionally provided with a fixing groove and is tightly matched with a fixing spigot on the upper end face of the necking female die 13, so that the coaxiality of the necking positioning plate 11 and the necking female die 13 is ensured, and the necking upper die part is additionally provided with a necking guide core 8, so that the effect of guiding a product is achieved in the production process, and the influence on quality caused by inaccurate positioning and swinging of the product during necking is prevented;
the bulging lower die 16 is provided with a groove for automatically correcting a bulging gap, and the gap between the bulging lower die and the double surfaces of the outer diameter of the bulging upper die 9 is 0.08-0.10 mm, so that the uniformity of the gap between 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. Thus, the uniform clearance of the die is ensured, the limiting function is realized (namely, when the die reaches the bottom dead center, the lower surface of the upper bulging die 9 is contacted with the upper surface of the gap correcting groove of the lower bulging die 16), and the guiding function is realized in the production process of the die, so that the influence on the product quality caused by the play of the upper die and the lower die is prevented;
the upper bulging limiting block 7 is additionally arranged on the upper bulging die part, and the lower bulging limiting block 17 is additionally arranged on the lower bulging die part, so that the overall bulging length and the drum-shaped outer diameter of a product can be ensured. And the front ends of the bulging upper limiting block 7 and the bulging lower limiting block 17 are respectively provided with a guide boss (namely, a pilot product inner hole during bulging, product bulging inner hole pressure deformation prevention and the like), and the discharging spring 4 is arranged on the bulging upper limiting block 7 to prevent the product bulging from adhering to an upper die and the like.
The multi-station combined die for necking and bulging the elastic spacer bush of the rear axle of the full-smooth light bus in the new Jiangling era is arranged on a single-action four-column 100T hydraulic press with an ejection cylinder according to the installation mode of a common necking and bulging die.
The elastic spacer bush of the completely smooth rear axle of the light bus in the new Jiangling era is made of a No. 10 seamless steel pipe with the wall thickness of 2.0mm through machining and stamping, and can be directly used for combined machining of necking and bulging multi-station dies after the processes of blanking and rough lathing:
step 1: installing the automobile drive rear axle elastic spacer sleeve necking and bulging multi-station combined die on a single-action four-column 100T hydraulic press with an ejection cylinder;
step 2: opening a jacking cylinder of the hydraulic press to the position of the lowest point of the stroke, and sleeving the outer diameter of the prefabricated elastic spacer after blanking and rough turning processes in a middle positioning hole of the necking positioning plate 11 for positioning;
and 3, step 3: starting a hydraulic press, enabling an upper template 1 to move downwards along with an upper workbench of a machine tool, guiding the inner hole of a positive workpiece by a necking guide core 8, then continuing to move downwards along with the necking guide core 8 until the lower surface of an upper bulging die 9 contacts the upper surface of a correction clearance groove of a lower bulging die 16, and completing the necking process processing of the workpiece by the necking guide core 8, an upper fixing plate 6 and a necking female die 13;
and 4, step 4: after the workpiece is subjected to necking processing, an upper workbench of the hydraulic machine drives the upper half part of the die to return, the workpiece subjected to necking is left in a middle cavity of a necking female die 13, then a jacking cylinder of the hydraulic machine is started to be opened to the position of the highest point of the stroke, the jacking cylinder jacks a jacking rod 15, the jacking rod 15 jacks a necking lower top plate 14, the necking lower top plate 14 jacks a workpiece (namely the workpiece in the necking process), and the workpiece is taken out by using an auxiliary tool and is placed into a transit material box;
and 5, step 5: starting the hydraulic press ejection cylinder to reset, so that the ejector rod 15 brings the necking lower top plate 14 and the bulging lower limit block 17 back to the lower plane of the necking lower top plate to be horizontally contacted with the upper plane of the lower backing plate 18;
and 6, step 6: sleeving the outer diameter of the elastic spacer sleeve after the necking procedure in the step 4 in the middle cavity of the bulging lower die 16 from a transfer material box for positioning, and sleeving the outer diameter of the prefabricated elastic spacer sleeve after another blanking and rough turning procedure in the middle positioning hole of the necking positioning plate 11 for positioning;
and 7, step 7: starting a hydraulic press, enabling an upper template 1 to move downwards along with a workbench on a machine tool, leading a workpiece inner hole of a positive necking process by a necking guide core 8, leading the workpiece inner hole of a positive bulging process by an upper bulging limiting block 7 under the action of a discharge spring 4, then continuing to move downwards along with the necking guide core 8 and an upper bulging die 9 until the lower surface of the upper bulging die 9 contacts the upper surface of a correction clearance groove of a lower bulging die 16, finishing the necking process processing of the workpiece by the necking guide core 8, an upper fixing plate 6 and a necking female die 13, and finishing the bulging process processing of the workpiece by the upper bulging die 9 and the lower bulging die 16;
and 8, step 8: after necking and bulging of the workpiece, an upper workbench of the hydraulic machine drives the upper half part of the die to return, the workpiece in the necking process is left in a middle shape cavity of a necking female die 13, a bulging upper limiting block 7 enables the workpiece in the bulging process to be left in a middle shape cavity of a bulging lower die 16 under the action of a discharge spring 4, then a jacking cylinder of the hydraulic machine is started to be opened to the position of the highest point of the stroke, the jacking cylinder ejects a jacking rod 15, the jacking rod 15 ejects a necking lower top plate 14 and a bulging lower limiting block 17, the necking lower top plate 14 ejects the workpiece in the necking process, the bulging lower limiting block 17 ejects the workpiece in the bulging process, an auxiliary tool is used for taking out two products, the workpiece in the necking process is put into a transit material box, and the workpiece in the bulging process is put into the material box;
step 9: and (5) repeating the operations from the step 5 to the step 8 to manufacture the lower workpiece.
After the elastic spacer bush of the completely smooth rear axle of the light bus in the new Jiangling era uses a necking and bulging multi-station combined die and a multi-station combined process, the related sizes of necking, bulging and the like are all in a tolerance range, and a pressure curve in a pressing installation state is in a stable rising trend and is kept in a range from 52KN to 68 KN. And the traditional two single-step processes are combined into a multi-station combination process, the production efficiency is improved by 47 percent, and the die adopts structures such as a die correction spigot for automatically correcting the bulging clearance of the die, so that the service life of the die is prolonged by 2.6 times, the production cost is reduced, and the quality of workpieces is stable. The elastic spacer sleeve can be continuously and stably ensured to meet the design requirements of product drawings in the new Jiangling era, and the full-smooth rear axle of the light bus can be ensured.
The foregoing shows and describes the general principles, broad features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the principles of the invention have been described in the foregoing examples and description with reference to specific embodiments without departing from the spirit and scope of the invention. The scope of the invention is defined by the appended claims and equivalents.
Claims (8)
1. The utility model provides an automobile drive rear axle elasticity spacer throat and bulging multistation assembling die, this mould divide into the latter half of the first half of mould and mould, and the first half of mould includes: the device comprises an upper template, a gasket, a guide sleeve, a discharging spring, an upper base plate, an upper fixing plate, an expansion upper limiting block, a necking guide core and an expansion upper die;
the lower half of the mould comprises: the device comprises a guide pillar, a necking positioning plate, a lower fixing plate, a necking female die, a necking lower top plate, a top rod, an bulging lower die, a bulging lower limiting block, a lower backing plate and a lower die plate;
the device is characterized in that a necking guide core and an upper bulging die are respectively arranged in corresponding fixing holes of an upper fixing plate through interference fit, an upper bulging limiting block is directly arranged in corresponding material beating holes of the upper bulging die and an upper backing plate through clearance fit, a discharging spring is pre-compressed and arranged in corresponding discharging holes of the upper bulging limiting block, a gasket and the upper die plate, guide sleeves are arranged in guide sleeve holes at two sides of the upper die plate through interference fit, and the upper die plate, the gasket and the upper backing plate are connected with the upper fixing plate through bolts and positioning pins;
the necking die and the bulging lower die are respectively arranged in fixing holes of the lower fixing plate in a corresponding mode through interference fit, the necking positioning plate is arranged on a fixed spigot of the upper end face of the necking die in the interference fit mode and is connected with the necking die through a bolt from the upper end face, guide pillars are arranged in guide pillar holes in two sides of the lower die plate in the interference fit mode, the lower die plate and the lower die plate are connected with the lower fixing plate through bolts and positioning pins, the ejector rods are directly arranged in ejector rod holes corresponding to the lower die plate and the lower die plate in a corresponding mode through clearance fit, a necking lower ejector plate is directly arranged in a middle cavity of the necking die through clearance fit, and a bulging lower limiting block is directly arranged in a middle cavity of the bulging lower die through clearance fit.
2. The multi-station assembling die for necking and bulging the elastic spacer bush of the rear axle of the automobile drive according to claim 1, wherein a fixing groove is additionally arranged on the lower end face of the necking positioning plate and is tightly matched with a fixing spigot on the upper end face of the necking female die, so that the coaxiality of the necking positioning plate and the necking female die is ensured, and a necking guide core is additionally arranged on the upper die part of the necking, so that the die plays a role in guiding a product in a production process.
3. The automobile drive rear axle elastic spacer necking and bulging multi-station assembling die according to claim 1 or 2, characterized in that the bulging lower die is provided with a groove for automatically correcting a bulging clearance, and a clearance between the bulging lower die and a double-side of an outer diameter of the bulging upper die is 0.08-0.10 mm, namely when the die reaches a bottom dead center, a lower surface of the bulging upper die contacts with an upper surface of the groove for correcting the clearance of the bulging lower die, so that a guiding effect is achieved in a die production process, and the phenomenon that the upper die and the lower die move to influence product quality is prevented.
4. The multi-station assembling die for necking and bulging of the elastic spacer bush of the rear axle of the automobile drive according to claim 1 or 2, wherein the upper bulging limiting block is additionally arranged on the upper bulging die portion, the lower bulging limiting block is additionally arranged on the lower bulging die portion, guide bosses are respectively arranged at the front ends of the upper bulging limiting block and the lower bulging limiting block, and a discharging spring is arranged on the upper bulging limiting block to prevent a product from being stuck on the upper bulging die.
5. The multi-station combination die for necking and bulging of the elastic spacer bush of the rear axle of the automobile drive according to claim 1 or 2, wherein the double-sided clearance between the necking lower top plate and the necking female die, the double-sided clearance between the bulging upper limiting block and the bulging upper die, the double-sided clearance between the bulging lower limiting block and the bulging lower die are 0.12-0.14 mm, the necking lower top plate, the bulging upper limiting block and the bulging lower limiting block are all made of a die steel material T10A, the quenching hardness is HRC 50-55, and the necking lower top plate, the bulging upper limiting block and the bulging lower limiting block are prevented from being pressed to deform.
6. The multi-station combination die for necking and bulging the elastic spacer bush of the rear axle of the automobile drive according to claim 1 or 2, wherein the bulging upper limiting block and the upper die plate are both provided with a hole phi 37 for placing a discharge spring.
7. The automobile drive rear axle elastic spacer necking and bulging multi-station assembling die according to claim 1 or 2, characterized in that a double-side gap between the guide pillar and the guide sleeve is 0.14-0.16 mm.
8. A technology for combining necking and bulging of an elastic spacer sleeve of an automobile drive rear axle by using a multi-station combination die for necking and bulging of the elastic spacer sleeve is characterized by comprising the following steps:
step 1: installing the automobile drive rear axle elastic spacer sleeve necking and bulging multi-station combined die on a single-action four-column 100T hydraulic press with an ejection cylinder;
step 2: opening a jacking cylinder of the hydraulic press to the position of the lowest point of the stroke of the jacking cylinder, and sleeving the outer diameter of the prefabricated elastic spacer after blanking and rough turning processes in a middle positioning hole of the necking positioning plate for positioning;
and 3, step 3: starting a hydraulic press, enabling an upper die plate to move downwards along with an upper workbench of a machine tool, guiding an inner hole of a workpiece by a necking guide core, then continuing to move downwards along with the necking guide core until the lower surface of an upper bulging die contacts the upper surface of a correction clearance groove of a lower bulging die, and completing the necking process processing of the workpiece by the necking guide core, an upper fixing plate and a necking female die;
and 4, step 4: after the workpiece is subjected to necking processing, an upper workbench of the hydraulic machine drives the upper half part of the die to return, the workpiece subjected to necking is left in a middle cavity of a necking female die, then a jacking cylinder of the hydraulic machine is started to be opened to the position of the highest point of the stroke of the hydraulic machine, the jacking cylinder jacks a jacking rod, the jacking rod jacks a necking lower top plate, the necking lower top plate jacks the workpiece (namely the workpiece in a necking process), and the workpiece is taken out by using an auxiliary tool and is placed into a transfer material box;
and 5, step 5: starting a hydraulic press ejection cylinder to reset, so that the ejector rod brings the necking lower top plate and the bulging lower limiting block downwards to the lower plane of the top plate to be in horizontal contact with the upper plane of the lower base plate;
and 6, step 6: sleeving the outer diameter of the elastic spacer after the necking procedure in the first step in a middle cavity of the bulging lower die in a middle rotating material box for positioning, and sleeving the outer diameter of the prefabricated elastic spacer after another blanking and rough turning procedure in a middle positioning hole of the necking positioning plate for positioning;
and 7, step 7: starting a hydraulic press, enabling an upper die plate to move downwards along with a workbench on a machine tool, leading a workpiece inner hole of a necking procedure by a necking guide core, leading a workpiece inner hole of a positive bulging procedure by an upper bulging limiting block under the action of a discharge spring, then continuing to move downwards along with the necking guide core and an upper bulging die until the lower surface of the upper bulging die contacts the upper surface of a correction gap groove of a lower bulging die, finishing the necking procedure processing of the workpiece by the necking guide core, an upper fixing plate and a necking female die, and finishing the bulging procedure processing of the workpiece by the upper bulging die and the lower bulging die;
and 8, step 8: after necking and bulging of the workpiece, driving the upper half part of the die to return by an upper workbench of the hydraulic press, keeping the workpiece in the necking process in a middle shape cavity of a necking female die, keeping the workpiece in the bulging process in a middle shape cavity of a bulging lower die under the action of a discharge spring by an upper bulging limiting block, starting a jacking cylinder of the hydraulic press to be opened to the position of the highest point of the stroke of the hydraulic press, jacking a jacking rod of the jacking cylinder, jacking a lower necking top plate and a lower bulging limiting block of the jacking cylinder, jacking the workpiece in the necking process by a lower necking top plate, jacking the workpiece in the bulging process by a lower bulging limiting block, taking out two products by an auxiliary tool, putting the workpiece in a material box, and putting the workpiece in a material box;
step 9: and (5) repeating the operations from the step 5 to the step 8 to manufacture the lower workpiece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139634.4A CN110814169A (en) | 2019-11-20 | 2019-11-20 | Necking and bulging multi-station combined die and technology for elastic spacer bush of automobile driving rear axle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911139634.4A CN110814169A (en) | 2019-11-20 | 2019-11-20 | Necking and bulging multi-station combined die and technology for elastic spacer bush of automobile driving rear axle |
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| CN110814169A true CN110814169A (en) | 2020-02-21 |
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| CN201911139634.4A Pending CN110814169A (en) | 2019-11-20 | 2019-11-20 | Necking and bulging multi-station combined die and technology for elastic spacer bush of automobile driving rear axle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111468605A (en) * | 2020-04-17 | 2020-07-31 | 苏州大学 | Compound bulging school shape integral type device of ultra-thin plate microstructure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU814521A1 (en) * | 1979-05-25 | 1981-03-23 | Предприятие П/Я Г-4575 | Method and apparatus for reducing thin-walled tubular blanks |
| JP2007283315A (en) * | 2006-04-13 | 2007-11-01 | Nisshin Steel Co Ltd | Method for spinning tube end |
| CN104128503A (en) * | 2014-07-23 | 2014-11-05 | 成都市龙泉驿区齐盛机械厂 | Self-return necking die |
| CN104759535A (en) * | 2015-03-31 | 2015-07-08 | 江西江铃底盘股份有限公司 | Compressible spacer bush forming mold of automobile drive axle main speed reducer |
| CN205147105U (en) * | 2015-12-01 | 2016-04-13 | 江西江铃底盘股份有限公司 | Synchronous mold processing is stood separately with shape of expanding to compressible spacer flaring of front axle |
| CN205183529U (en) * | 2015-12-01 | 2016-04-27 | 江西江铃底盘股份有限公司 | Compressible spacer flaring of front axle and shape combination processing mould that expands |
| CN108405731A (en) * | 2018-05-30 | 2018-08-17 | 中国航发动力股份有限公司 | A kind of thin-wall cylindrical member necking die |
-
2019
- 2019-11-20 CN CN201911139634.4A patent/CN110814169A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU814521A1 (en) * | 1979-05-25 | 1981-03-23 | Предприятие П/Я Г-4575 | Method and apparatus for reducing thin-walled tubular blanks |
| JP2007283315A (en) * | 2006-04-13 | 2007-11-01 | Nisshin Steel Co Ltd | Method for spinning tube end |
| CN104128503A (en) * | 2014-07-23 | 2014-11-05 | 成都市龙泉驿区齐盛机械厂 | Self-return necking die |
| CN104759535A (en) * | 2015-03-31 | 2015-07-08 | 江西江铃底盘股份有限公司 | Compressible spacer bush forming mold of automobile drive axle main speed reducer |
| CN205147105U (en) * | 2015-12-01 | 2016-04-13 | 江西江铃底盘股份有限公司 | Synchronous mold processing is stood separately with shape of expanding to compressible spacer flaring of front axle |
| CN205183529U (en) * | 2015-12-01 | 2016-04-27 | 江西江铃底盘股份有限公司 | Compressible spacer flaring of front axle and shape combination processing mould that expands |
| CN108405731A (en) * | 2018-05-30 | 2018-08-17 | 中国航发动力股份有限公司 | A kind of thin-wall cylindrical member necking die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111468605A (en) * | 2020-04-17 | 2020-07-31 | 苏州大学 | Compound bulging school shape integral type device of ultra-thin plate microstructure |
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