CN116532558A - Horizontal expansion die for end ring of water pump - Google Patents
Horizontal expansion die for end ring of water pump Download PDFInfo
- Publication number
- CN116532558A CN116532558A CN202310824791.9A CN202310824791A CN116532558A CN 116532558 A CN116532558 A CN 116532558A CN 202310824791 A CN202310824791 A CN 202310824791A CN 116532558 A CN116532558 A CN 116532558A
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- die
- male die
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- ring
- working
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 15
- 238000005266 casting Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
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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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
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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
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention belongs to the field of dies, and particularly relates to a horizontal expansion die for a water pump end ring, which comprises the following components: the device comprises a male die, a female die assembly, a male die fixing device and a female die fixing device, wherein the male die comprises a working part and a connecting part; the female die assembly comprises a limiting ring and a limiting working assembly; the male die fixing device comprises a fixing plate, a male die fixing seat and a male die base plate; the female die fixing device comprises a female die gasket and a female die fixing seat; the invention realizes the purposeful expansion of the small-size end ring through the specific design of the die, simultaneously considers the problem that the workpiece is tightly attached to the die assembly and is inconvenient to detach after the expansion of the workpiece is completed possibly occurring in the expansion process, and embodies the practicability of the specific structure of the invention.
Description
Technical Field
The invention belongs to the field of dies, and particularly relates to a horizontal expansion die for a water pump end ring.
Background
The end ring of the water pump has the function of causing a narrow and tortuous passage between the impeller and the pump shell to increase the flow resistance of liquid and fulfill the aim of reducing liquid leakage; the arrangement of the end ring of the water pump also plays a role in protecting the primary parts of the pump from being worn out, and after the end ring is worn out, the correct assembly clearance can be recovered by repairing or replacing a new ring, so that the end ring of the water pump continuously plays a role in protecting the primary parts of the water pump, and in this way, the end ring of the water pump is used as an important consumable for various water pumps.
The existing end ring of the water pump is usually manufactured in a casting mode, and the sizes of the water pump are various, so that the sizes of the end ring of the water pump are various correspondingly, various moulds with different sizes are required to be manufactured in the casting process of the end ring, and the manufacturing of various moulds is also a great resource consumption; in addition, because the demand and the demand time of the customer for the end rings with different sizes are uncertain, the factory can perform saturated casting on the end rings with different sizes, the consumed speed of the end rings with different sizes is different after the end rings with different sizes are cast, even the end rings with different sizes are not needed for a long time, the end rings with different sizes are wasted due to the fact that the end rings with different sizes are not matched with water pumps, and finally, the resource is wasted, and when the end rings with different sizes are cast, serious pollution is caused to the environment due to the process characteristics of casting.
How to reduce the manufacturing of grinding tools for end rings and the casting of end rings with unusual dimensions in a form of reasonably utilizing end rings with various dimensions, so as to further realize the saving of resources and the protection of the environment is a problem to be solved in the technical field of the current mould.
Disclosure of Invention
In view of the above, the invention aims to provide a horizontal expansion die for a water pump end ring, which aims to solve the problem that the cast end ring in the prior art cannot be used in an intercommunication way, so that resource waste is caused.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a horizontal expansion die for a water pump end ring, comprising:
the male die comprises a connecting part and a working part which is in a hexagonal pyramid shape, wherein the working part comprises a large-diameter end and a small-diameter end, and the large-diameter end and the small-diameter end are in smooth transition connection through a slope;
the female die assembly is correspondingly distributed around the male die and comprises a limiting ring, the body of the limiting ring is uniformly divided into six fan-shaped working areas along the circle center of the circular ring of the limiting ring, each fan-shaped working area comprises a limiting working assembly, the six limiting working assemblies and the limiting ring jointly form a working table for expanding workpieces, and the workpieces which are arranged on the outer side of the working table in advance are expanded through the cooperation of the male die and the limiting working assemblies;
the male die fixing device comprises a fixing plate, and the fixing plate is connected with the connecting part of the male die in a matched manner to fix the male die on the male die fixing device;
the female die fixing device comprises a female die gasket, the female die gasket is fixedly connected with the limiting ring through a plurality of first screws, and the female die fixing device is used for limiting the limiting ring in the female die assembly and limiting the movement of the limiting ring in any direction.
Preferably, the male die fixing device further comprises a male die fixing seat, a male die base plate is further arranged between the male die fixing seat and the fixing plate, and the male die fixing seat, the male die base plate and the fixing plate are positioned and fixedly connected through a plurality of first cylindrical pins and a plurality of second screws.
Preferably, in the die assembly, a slideway is formed in the middle of each fan-shaped working area of the limiting ring along the radial direction of the working area;
in addition, each group of limiting working components comprises a forming pushing block and a wedge-shaped pushing block, wherein the forming pushing blocks comprise short arc parts and long arc parts, the short arc parts are attached to the outer circular side surfaces of the limiting rings, and the long arc parts are attached to the inner circular side surfaces of the workpieces; in addition, the wedge-shaped push block comprises an integrally formed inclined block part and a guide rod part, wherein the inclined block part is used for being matched and attached to any surface of the male die when working, the pressure provided by the male die is transmitted to the limit working assembly, and the guide rod part is smoothly inserted into the slideway of the limit ring; the forming push block and the guide rod part of the wedge-shaped push block are connected through a third screw, so that on the basis that the limiting ring is limited, the forming push block and the wedge-shaped push block move along the radial direction of the limiting ring at the same time, and the workpiece is expanded;
on the basis, a group of compression springs are further arranged between the inclined block part of the wedge-shaped pushing block and the limiting ring, and two ends of each compression spring are matched with grooves preset on the inclined block part and the limiting ring; when the compression spring is in a relaxed state, the forming pushing block is attached to the limiting ring, namely the diameter of the workbench is minimum at the moment, and the forming pushing block is used for placing an original workpiece; when the male die presses the wedge-shaped pushing block, the compression spring is compressed gradually, namely the diameter of the workbench begins to be enlarged at the moment, and the original workpiece begins to expand.
Preferably, the die fixing device further comprises a die fixing seat, and the die fixing seat and the die gasket are positioned and fixedly connected through a plurality of second cylindrical pins and a plurality of fourth screws.
Preferably, the die fixing device further comprises two groups of guide assemblies, the two groups of guide assemblies are symmetrically arranged on the die fixing seat, each group of guide assemblies comprises guide posts connecting the die fixing seat and the die fixing seat, guide holes and receiving holes respectively arranged on the die fixing seat and the die fixing seat, and when the horizontal expansion die works, the die fixing device and the die realize accurate extrusion action in the horizontal direction under the limit guiding action of the guide assemblies.
Preferably, the male die is a quenched T8 steel material.
Preferably, in the die assembly, the material of the limiting ring, the forming push block and the wedge-shaped push block is 45# steel.
The invention has the beneficial effects that:
the invention realizes the process of converting the small-size end ring into the large-size end ring by the mode of mutually matched extrusion of the male die and the female die, wherein the required end ring size is determined by the working part of the male die and the female die assembly, namely the size of the final formed end ring can be adjusted by manufacturing and adjusting the size of the working part of the male die, adjusting the advancing amount of the male die in the working state, manufacturing and adjusting the thickness of the forming pushing block in the radial direction of the limiting ring or manufacturing and adjusting the length of the guide rod part of the wedge-shaped pushing block, thereby embodying the practicability of the invention;
the invention provides a working foundation for realizing the whole process from assembly to expansion molding of an original workpiece, and simultaneously takes account of the fact that the diameter of a workbench formed by the die assembly begins to be reduced after expansion is completed and the male die retreats due to the fact that compression spring releases compression elasticity, so that the workpiece is separated from the workbench after expansion, the collection of the workpiece after expansion by workers is facilitated, the operation time is saved, and the working efficiency is improved.
In general, the invention realizes the purpose of expanding the small-size end ring through the specific design of the die structure, and simultaneously considers the possible situations in the expanding process, such as the problem that the workpiece is not convenient to detach due to the close fit between the workpiece and the female die assembly after the expansion of the workpiece is completed.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic top cut-away view of the present invention;
FIG. 2 is a schematic elevational view of the die holder and die assembly of the present invention;
FIG. 3 is a schematic view of the diameter X and structure of the inner ring of the end ring workpiece of the original water pump in the invention;
fig. 4 is a schematic diagram of the dimension and structure of the end ring workpiece of the water pump after expansion in the ideal state.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The casting and the use of the end ring of the water pump in the prior art have the following defects: because the end ring of the water pump is used as a consumable part containing different sizes and is required by the water pump, most factories adopt a saturated casting method for the end rings with different sizes to meet the assault demands of clients, the consumed speeds of the end rings with different sizes are different, even the end rings with different sizes are not required for a long time, the end rings with different sizes in the cast end rings cannot be used in an intercommunicating way, and finally, the resource waste is caused; when the end rings with various sizes are cast, serious pollution to the environment can be caused due to the process characteristics of casting; the different-size end rings in the cast end rings cannot be used in an intercommunicating way, so that the problem of resource waste is caused.
In view of this, the invention realizes the purposeful expansion of the small-sized end ring through the specific design of the mold structure, and simultaneously considers various situations possibly occurring in the expansion process, such as the problem that the workpiece is not convenient to detach due to the close fitting of the workpiece and the female mold assembly after the expansion of the workpiece is completed, thus embodying the practicability of the specific structure of the invention.
The scheme provided by the invention will be described in detail below with reference to the accompanying drawings.
In the technical scheme, as shown in fig. 1, a male die 1 comprises a connecting part 101 and a working part in a hexagonal pyramid shape, wherein the working part comprises a large-diameter end 102 and a small-diameter end 103, and the large-diameter end 102 and the small-diameter end 103 are connected in a smooth transition manner through a slope;
the female die assembly 2 is correspondingly distributed around the male die 1, the female die assembly 2 comprises a limiting ring 201, the body of the limiting ring 201 is uniformly divided into six fan-shaped working areas along the circle center of the circular ring, each fan-shaped working area comprises a limiting working assembly 202, and the six limiting working assemblies 202 and the limiting ring 201 jointly form a working table for expanding workpieces.
In this embodiment, the workpiece placed on the outer side of the workbench in advance is expanded by the cooperation of the male die 1 and the limit working assembly 202; the male die 1 plays a vital role in the expansion process of the end ring of the water pump as a working part mainly providing expansion power, the quenched T8 steel material is adopted to enable the male die to have higher hardness and wear resistance, the female die assembly 2 plays an important role in the expansion process of the end ring of the water pump as a working part playing a limiting and supporting role, and the 45# steel can effectively enable the male die to play a role.
In the invention, as the main core point of the die, the male die 1 can change the maximum size of the expansion end ring according to the change of the sizes of the large-diameter end 102 and the small-diameter end 103 of the male die 1, and as the large-diameter end 102 and the small-diameter end 103 of the male die 1 are connected in a smooth transition manner through a slope, when the expansion size of the end ring is controlled, the size of the expansion end ring of the workbench can be controlled only by controlling the advancing amount of the male die 1 within a certain range; when the working part of the male die 1 and the size of the workbench cannot expand the original end ring to the required size, a new set of expanded size range of the end ring can be obtained only by manufacturing and adjusting the size of the working part of the male die 1 or manufacturing and adjusting the size of the workbench, and although each set of size range needs to be matched with one male die 1 and one female die component 2, compared with casting dies with different sizes and continuous casting processes, the invention has the advantages that the equipment needing to be adjusted is smaller, a large number of times of casting processes are saved, and great contribution is made to resource utilization and environmental protection.
In this technical solution, as shown in fig. 1-2, in the die assembly 2, a slide way is provided in the middle of each sector-shaped working area of the limiting ring 201 along the radial direction thereof;
in addition, each group of the limiting working assemblies 202 includes a forming push block 203 and a wedge push block 204, where the forming push block 203 includes a short arc portion and a long arc portion, the short arc portion is attached to the outer circular side surface of the limiting ring 201, and the long arc portion is attached to the inner circular side surface of the workpiece.
In the invention, the forming push blocks 203 are used for directly applying thrust in the radial direction to the end ring workpiece, and the sum of the arc lengths of the long arc parts of the six forming push blocks 203 and the arc length of the gap between every two forming push blocks 203 is the inner arc length of the end ring after expansion.
In addition, the wedge-shaped push block 204 comprises an integrally formed inclined block part 205 and a guide rod part 206, wherein the inclined block part 205 is used for being matched and attached with any one side of the male die 1 during working, namely the inclination of the end surface of the inclined block part 205, which is contacted with the male die 1, is the same as the inclination of any one side surface of the male die 1; in this case, the inclined block 205 starts to transmit the pressure provided by the punch 1 to the limit working assembly 202, and the guide rod 206 is smoothly inserted into the slideway of the limit ring 201.
It should be noted that, the forming push block 203 and the guide rod portion 206 of the wedge push block 204 are connected by a third screw 207, so that on the basis of limiting the limiting ring 201, the forming push block 203 and the wedge push block 204 move along the radial direction of the limiting ring 201 at the same time, the third screw 207 extends from the long arc portion of the forming push block 203 to the short arc portion and is directly connected with the guide rod portion 206 of the wedge push block 204 inside the slideway of the limiting ring 201, and in addition, the third screw 207 is a countersunk screw, so that the surface smoothness of the long arc portion of the forming push block 203 is ensured, the end ring is prevented from being damaged due to uneven local stress or unsmooth surface of the long arc portion of the forming push block 203 in the process of expanding the end ring, so far, the die assembly 2 can realize the working foundation of expanding the workpiece under the condition that the power is provided by the male die 1.
On this basis, a group of compression springs 208 is further disposed between the inclined block portion 205 of the wedge-shaped push block 204 and the limiting ring 201, and two ends of the compression springs 208 are matched with grooves preset on the inclined block portion 205 and the limiting ring 201, so that the compression springs 208 are prevented from being shifted in position in the working process, and further expansion failure of the end ring is caused.
In this example, when the compression spring 208 is in a relaxed state, the forming push block 203 is attached to the limiting ring 201, that is, the diameter of the workbench is the smallest at this time, so that the original end ring workpiece is placed, and no inclined block portions 205 of the six wedge-shaped push blocks 204 interfere with each other at this time; when the punch 1 starts to travel and presses the wedge-shaped push block 204, the compression spring 208 compresses gradually, the wedge-shaped push block 204 and the forming push block 203 start to move along the radial direction of the limiting ring 201 under the limiting and guiding actions of the limiting ring 201, that is, the diameter of the workbench starts to be increased, the original end ring workpiece starts to expand until the punch 1 stops traveling, and the end ring workpiece is expanded.
In this technical solution, as shown in fig. 1, the punch fixing device 3 includes a fixing plate 301, where the fixing plate 301 is cooperatively connected with the connecting portion 101 of the punch 1, so as to fix the punch 1 to the punch fixing device 3.
In the embodiment, no matter the size of the working part arranged on the male die 1, the connecting part of the male die 1 is unchanged, namely, when an end ring with larger size change is needed to be obtained, and the size of the working part of the existing mounted male die 1 can not meet the requirement, only the male die 1 is needed to be replaced, and the size of the male die fixing device 3 is not needed to be adjusted, so that the material cost for manufacturing the device is saved, and the practicability of the invention is embodied;
it should be noted here that the fixing plate 301 is cooperatively connected with the connecting portion 101 of the male die 1 to fix the male die 1 to the male die fixing device 3, in this example, as shown in fig. 1, in such a manner that the male die 1 is fixed to the male die fixing device 3 by cooperation of a boss and a cavity, and the male die 1 may be fixed to the male die fixing device 3 according to other cooperation manners, such as a threaded connection or a keyed connection.
In addition, the punch fixing device 3 further includes a punch fixing seat 302, a punch backing plate 303 is further disposed between the punch fixing seat 302 and the fixing plate 301, and the punch fixing seat 302, the punch backing plate 303 and the fixing plate 301 are all positioned and fixedly connected through a plurality of first cylindrical pins 304 and a plurality of second screws 305, in this example, the plurality of first cylindrical pins 304 and the plurality of second screws 305 are all uniformly distributed along the periphery of the punch 1.
In this technical solution, as shown in fig. 1, the die fixing device 4 includes a die washer 401, where the die washer 401 is fixedly connected with the stop collar 201 by a plurality of first screws 402.
In this example, the first screws 402 are arranged on two sides of the slide way in each sector working area of the limiting ring 201, that is, the limiting fixation of the limiting ring 201 does not affect the sliding of the guide rod portion 206 of the wedge-shaped push block 204 in the slide way, so that the die fixing device 4 is used for limiting the limiting ring 201 in the die assembly 2 and limiting the movement of the limiting ring 201 in any direction; in addition, the die gasket 401 is a hollow annular gasket, and when the die assembly 2 is arranged at the large-diameter end 102 of the working part of the punch 1 in working, namely, when the die assembly reaches the maximum expansion capacity, the radial thickness of the die gasket 401 can prevent the punch 1 from interfering with the die gasket 401.
In addition, the die fixing device 4 further includes a die fixing seat 403, the die fixing seat 403 and the die gasket 401 are positioned and fixedly connected through a plurality of second cylindrical pins 404 and a plurality of fourth screws 405, in this example, the plurality of second cylindrical pins 404 and the plurality of fourth screws 405 are uniformly distributed along the circumference of the die gasket 401, so far, the die assembly 2 is limited in all the degrees of freedom except for the movement effect of the work, and in addition, based on the above embodiment, the axial thickness of the die gasket 401 can prevent the interference between the punch 1 and the die fixing seat 403.
On this basis, the die fixing device 4 further comprises two groups of guiding components, the two groups of guiding components are symmetrically arranged on the die fixing seat 403, each group of guiding components comprises a guiding column 406 for connecting the die fixing seat 302 and the die fixing seat 403, and guiding holes and receiving holes respectively arranged on the die fixing seat 302 and the die fixing seat 403, and the guiding column 406 plays a guiding role in the guiding holes and the receiving holes.
In this embodiment, when the horizontal expansion die works, the punch fixing device 3 and the punch 1 achieve accurate extrusion motion in the horizontal direction under the limit guiding action of the guiding component.
Specifically, when the horizontal expansion die provided by the invention is used for expanding the small-size water pump end ring, as shown in fig. 3, the inner diameter of the small-size water pump end ring is X, and in order to form a large-size water pump end ring to improve the utilization rate of the small-size water pump end ring, as shown in fig. 4, the expansion increment of the small-size water pump end ring is 4mm, namely the inner diameter of the expanded water pump end ring is x+4mm; firstly, fixing the male die 1 on the male die fixing device 3, sleeving an original small-size end ring on a workbench, namely, sleeving the long arc parts of six forming push blocks 203 of the female die assembly 2, moving the male die fixing device 3 and the male die 1 according to the guide assembly to be arranged at a position close to the female die assembly 2, and ensuring that the end part of the male die 1 cannot interfere with the inclined block part 205 of the wedge-shaped push block 204 in the subsequent advancing process;
next, a press is used to provide pressure for the expansion die on one end face of the punch holder 302, wherein the expansion die needs to be matched with the press to use the conventional technical means of the existing die forming process, and the expansion die can be correctly understood by those skilled in the art; the pressure provided by the press is transmitted to the male die 1 through the male die fixing device 3, the male die 1 moves horizontally, the wedge-shaped push block 204 and the forming push block 203 move along the radial direction of the limit ring 201 under the action of sliding guide of the guide rod part 206 in the slideway due to the fixing limit of the limit ring 201, namely the diameter of the workbench is gradually increased, the original end ring workpiece begins to expand until the male die 1 stops advancing, the diameter of the end ring workpiece is increased by 4mm, and the newly increased compression amount of the compression spring 208 is 4mm;
then the press is controlled to roll back, the male die fixing device 3 and the male die 1 both roll back along with the press, at this time, the diameter of the workbench formed by the female die assembly 2 begins to be reduced due to the compression spring 208 releasing the compression elastic force, namely, the wedge-shaped push block 204 and the forming push block 203 all begin to roll back to the original state, so that the workpiece and the forming push block 203 are separated after expansion, the collection of the workpiece after expansion by a worker is facilitated, and the expansion process of an end ring workpiece is completed.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (7)
1. A horizontal expansion die for a water pump end ring, comprising:
the male die comprises a connecting part and a working part which is in a hexagonal pyramid shape, wherein the working part comprises a large-diameter end and a small-diameter end, and the large-diameter end and the small-diameter end are in smooth transition connection through a slope;
the female die assembly is correspondingly distributed around the male die and comprises a limiting ring, the body of the limiting ring is uniformly divided into six fan-shaped working areas along the circle center of the circular ring of the limiting ring, each fan-shaped working area comprises a limiting working assembly, the six limiting working assemblies and the limiting ring jointly form a working table for expanding workpieces, and the workpieces which are arranged on the outer side of the working table in advance are expanded through the cooperation of the male die and the limiting working assemblies;
the male die fixing device comprises a fixing plate, and the fixing plate is connected with the connecting part of the male die in a matched manner to fix the male die on the male die fixing device;
the female die fixing device comprises a female die gasket, the female die gasket is fixedly connected with the limiting ring through a plurality of first screws, and the female die fixing device is used for limiting the limiting ring in the female die assembly and limiting the movement of the limiting ring in any direction.
2. The horizontal expansion die for a water pump end ring of claim 1, wherein: the male die fixing device further comprises a male die fixing seat, a male die base plate is further arranged between the male die fixing seat and the fixing plate, and the male die fixing seat, the male die base plate and the fixing plate are positioned and fixedly connected through a plurality of first cylindrical pins and a plurality of second screws.
3. A horizontal expansion die for a water pump end ring as set forth in claim 2, wherein: in the female die assembly, a slideway is arranged in the middle of each fan-shaped working area of the limiting ring along the radial direction of the middle;
in addition, each group of limiting working components comprises a forming pushing block and a wedge-shaped pushing block, wherein the forming pushing blocks comprise short arc parts and long arc parts, the short arc parts are attached to the outer circular side surfaces of the limiting rings, and the long arc parts are attached to the inner circular side surfaces of the workpieces; in addition, the wedge-shaped push block comprises an integrally formed inclined block part and a guide rod part, wherein the inclined block part is used for being matched and attached to any surface of the male die when working, the pressure provided by the male die is transmitted to the limit working assembly, and the guide rod part is smoothly inserted into the slideway of the limit ring; the forming push block and the guide rod part of the wedge-shaped push block are connected through a third screw, so that on the basis that the limiting ring is limited, the forming push block and the wedge-shaped push block move along the radial direction of the limiting ring at the same time, and the workpiece is expanded;
on the basis, a group of compression springs are further arranged between the inclined block part of the wedge-shaped pushing block and the limiting ring, and two ends of each compression spring are matched with grooves preset on the inclined block part and the limiting ring; when the compression spring is in a relaxed state, the forming pushing block is attached to the limiting ring, namely the diameter of the workbench is minimum at the moment, and the forming pushing block is used for placing an original workpiece; when the male die presses the wedge-shaped pushing block, the compression spring is compressed gradually, namely the diameter of the workbench begins to be enlarged at the moment, and the original workpiece begins to expand.
4. A horizontal expansion die for a water pump end ring as set forth in claim 3, wherein: the die fixing device further comprises a die fixing seat, and the die fixing seat and the die gasket are positioned and fixedly connected through a plurality of second cylindrical pins and a plurality of fourth screws.
5. The horizontal expansion die for a water pump end ring of claim 4, wherein: the die fixing device further comprises two groups of guide assemblies, the two groups of guide assemblies are symmetrically arranged on the die fixing seat, each group of guide assemblies comprises guide posts for connecting the punch fixing seat and the die fixing seat, guide holes and receiving holes respectively arranged on the punch fixing seat and the die fixing seat, and when the horizontal expansion die works, the punch fixing device and the punch realize accurate extrusion action in the horizontal direction under the limit guide action of the guide assemblies.
6. The horizontal expansion die for a water pump end ring of claim 1, wherein: the male die is made of quenched T8 steel materials.
7. A horizontal expansion die for a water pump end ring as set forth in claim 3, wherein: in the die assembly, the limiting rings, the forming push blocks and the wedge-shaped push blocks are all made of 45# steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310824791.9A CN116532558A (en) | 2023-07-06 | 2023-07-06 | Horizontal expansion die for end ring of water pump |
Applications Claiming Priority (1)
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