CN211679578U - Progressive die for micro part machining - Google Patents
Progressive die for micro part machining Download PDFInfo
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- CN211679578U CN211679578U CN202020123692.XU CN202020123692U CN211679578U CN 211679578 U CN211679578 U CN 211679578U CN 202020123692 U CN202020123692 U CN 202020123692U CN 211679578 U CN211679578 U CN 211679578U
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Abstract
The application discloses a progressive die for micro-part machining, which comprises an upper clamp, a clamping plate and a lower clamp which are sequentially arranged, wherein a plurality of punches which are sequentially arranged are arranged on the upper clamp, a plurality of upper dies are respectively and correspondingly arranged on the plurality of punches, a plurality of lower dies are arranged on one side of the lower clamp, which is opposite to the upper clamp, the upper clamp drives the punches to be close to or far away from the lower clamp, so that the upper dies are correspondingly matched with or separated from the lower dies one by one after passing through the clamping plate; the forming channel for containing and clamping materials is formed between the clamping plate and the lower clamp, the forming process of the workpiece is split, each processing step is respectively carried out and distributed on the same group of dies, the feeding process of the materials is utilized to realize the progressive processing, the different processing positions of the materials are sequentially processed in multiple stages, the purpose of progressive processing forming is realized, compared with the forming mode of a traditional complex die structure, the complexity and the manufacturing difficulty of the dies are greatly reduced, and the processing efficiency of the workpiece is improved.
Description
Technical Field
The application relates to the field of micro-forming, in particular to a progressive die for micro-part machining.
Background
In industries such as electronic consumer goods, medical treatment, precision instruments, environmental energy, electronic information, aerospace, weaponry and the like, more and more micro parts and products are widely applied and closely related to technical development and product output of various industries. The fabrication of miniature products has significant scientific significance and potential for use, and the fabrication of micro-parts is very diverse, such as machine-based manufacturing processes, including micro-machining, micro-injection molding, powder injection molding and micro-forming. Among these processes, the micro-processing technique has advantages of simple processing, low cost, and high forming efficiency.
The inventor finds that although the advantages of micro-forming are great, one of the keys of the micro-forming technology is the design of a die, and a set of die can efficiently process parts with high precision, the micro-parts are required to be obtained by precision machining due to high precision requirements, and the traditional macro-die cannot achieve the required precision during manufacturing, is not suitable for processing the micro-parts and is difficult to meet the precision requirements of the existing micro-parts; although the special die for the partial micro-parts can be used for stamping, the production efficiency is low, and for some workpieces with characteristics, complex dies are required to be combined, and the parts of the die are processed in a time-sharing and step-by-step mode, so that the die action in the machining process is complex and the control is difficult.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is to the defect that prior art exists, a progressive die towards little parts machining is provided, carry out the split with the forming process of work piece, make each processing step go on respectively and arrange on same a set of mould, utilize the feeding process of material to realize the progressive of course of working, carry out multistage processing in proper order to the different machined position of material, realize progressive machine-shaping's of formula purpose, compare in the shaping mode of traditional complicated mould structure, greatly reduced the complexity and the preparation degree of difficulty of mould, the machining efficiency of work piece has been improved.
In order to realize the purpose, the following technical scheme is adopted:
a progressive die facing micro-part machining comprises an upper clamp, a clamping plate and a lower clamp which are sequentially arranged, wherein a plurality of punches which are sequentially arranged are arranged on the upper clamp, a plurality of upper dies are respectively and correspondingly arranged on the plurality of punches, a plurality of lower dies are arranged on one side of the lower clamp opposite to the upper clamp, and the upper clamp drives the punches to be close to or far away from the lower clamp so that the plurality of upper dies are correspondingly matched with or separated from the plurality of lower dies one by one after penetrating through the clamping plate; a forming channel for accommodating and clamping materials is formed between the clamping plate and the lower clamp, and different upper dies and corresponding lower dies are used for processing and forming the materials step by step in the material feeding direction.
Furthermore, the number of the punches is three, a first upper die, a second upper die and a third upper die are correspondingly arranged on the punches respectively, and a first lower die, a second lower die and a third lower die are correspondingly arranged on the lower fixture and used for processing materials differently respectively.
Further, with the feeding of the materials, the same upper die and the same lower die carry out the same processing on different positions of the materials.
Furthermore, a plurality of through holes corresponding to the lower die are formed in the lower clamp and used for discharging waste materials or products during machining.
Further, a first elastic mechanism and a second elastic mechanism are respectively arranged between the upper clamp and the clamping plate and between the clamping plate and the lower clamp, the first elastic mechanism assists the upper clamp to drive the punch to move, and the second elastic mechanism pushes the clamping plate to be far away from the lower clamp.
Further, first elastic mechanism includes a plurality of first springs that distribute on last anchor clamps bottom surface, second elastic mechanism includes a plurality of second springs that distribute on anchor clamps top surface down, be equipped with a plurality of guide bars on going up the anchor clamps, the guide bar passes the through-hole of predetermineeing on the splint and slides with the cooperation of the last predetermined guiding hole of anchor clamps down.
Compared with the prior art, the application has the advantages and positive effects that:
(1) the traditional stamping die adopts a fixed punch, only single parts can be manufactured, and the traditional micro gear manufacturing generally depends on micro-machining tools, LIGA (laser induced machining) and other technologies, so that the manufacturing cost is high and the production efficiency is low; the design of the clamp with the replaceable punch is adopted, and the micro-forming processing of the parts is carried out by matching with the plastic forming characteristic of the material, so that the processing of various parts can be carried out, the universality is high, the part processing time is saved, and the production cost of the parts is reduced;
(2) the mold for traditional micro-forming processing can only carry out a single procedure, if a plurality of procedures are combined, the complexity of the mold is greatly increased, and the processing flow is split and respectively matched with the corresponding processing molds, so that the plurality of procedures can be carried out simultaneously, and the progressive production is realized, and the production efficiency is increased;
(3) preferably, the micro-cylinder part can be produced while the flange gear part is produced, so that the utilization rate of blanks is improved; the whole processing process is configured, so that the positioning precision in the processing process is effectively improved, and the whole processing efficiency and precision are improved;
(4) the clamping plate adopts the design of the return spring, so that the pressing force of the part during production is increased, and the clamping plate automatically returns in the return process, so that the feeding is facilitated, and the production efficiency and precision are improved; preferably, a material mixing and fixing mechanism is arranged at one end of the forming channel, and the clamping plate is returned to drive the blank to leave the lower die to be matched with the feeding mechanism so as to improve the production efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic overall structure diagram of a mold according to embodiments 1 and 2 of the present application;
FIG. 2 is a schematic view of the material processing process of examples 1 and 2 of the present application;
fig. 3 is a schematic structural view of a first punch according to embodiments 1 and 2 of the present application;
fig. 4 is a schematic structural view of a second punch according to embodiments 1 and 2 of the present application;
fig. 5 is a schematic structural view of a third punch according to embodiments 1 and 2 of the present application;
FIG. 6 is a schematic view showing the combination of the upper jig, the clamping plate and the lower jig according to embodiments 1 and 2 of the present application;
FIG. 7 is a schematic view showing the combination of the upper clamp, the clamping plate and the spring according to embodiments 1 and 2 of the present application;
FIG. 8 is a schematic structural view of a lower clamp according to embodiments 1 and 2 of the present application;
fig. 9 is a schematic structural view of an upper jig according to embodiments 1 and 2 of the present application;
fig. 10 is a schematic structural diagram of a product obtained after processing in example 1 of the present application.
Wherein: 1. a first spring; 2. a second spring; 3. a material guide chute; 4. a first lower die; 5. a second lower die; 6. a third lower die; 7. a lower clamp; 8. a guide hole; 9. a splint; 10. a third upper die; 11. an upper clamp; 12. a second upper die; 13. a first upper die; 14. a guide rod.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As introduced in the background art, when the micro-part is manufactured in the prior art, the conventional macro-mold cannot achieve the required precision during manufacturing, is not suitable for processing the micro-part, and is difficult to meet the precision requirement of the existing micro-part; although the special die for the micro parts can be used for stamping, the production efficiency is low, complex dies are required to be combined for some workpieces with characteristics, and the parts of the die are processed in a time-sharing and step-by-step mode, so that the action of the die is complex and the control is difficult in the processing process.
Example 1
In an exemplary embodiment of the present application, as shown in fig. 1-10, a progressive die for micro part machining is provided.
The mould is integrally divided into an upper part, a middle part and a lower part:
the upper die part is arranged on an actuating mechanism of the external punching machine and reciprocates along the vertical direction under the action of the mechanism;
the main body part is an upper clamp 11, a plurality of punches which are sequentially arranged are arranged on the bottom surface of the upper clamp, a plurality of upper dies are correspondingly arranged on the plurality of punches respectively, the upper dies at the tail ends of the punches can be replaced, and different upper dies have different structures, so that different types of processing can be performed on materials;
in this embodiment, the three punches are respectively a first punch, a second punch and a third punch, a first upper die 13, a second upper die 12 and a third upper die 10 are respectively and correspondingly arranged on the three punches, the first upper die punches a material processing position to obtain a positioning hole, the second upper die is provided with a stepped shaft structure, the material processing position is punched to form a stepped hole structure, the third upper die is provided with an external gear structure, and the material processing position is punched and cut to form the external gear structure;
during material selection, the upper clamp can be made of an aluminum alloy material, so that the weight of the upper die is reduced; the punch head structure and the upper die structure are made of high-speed steel materials and used as stamping elements for good hardness.
It can be understood that the three punches correspond to the machining process of the gear with the stepped hole, and for the machining process of other micro parts, corresponding punch structures can be configured according to actual requirements, or the number of the punches can be adjusted, so that the micro part with a required structure can be obtained through machining.
The lower die part main body is a lower clamp 7, the bottom of the lower clamp is arranged on a workbench of an external punching machine, the weight of each element is borne, and a support structure is formed for the plate; a plurality of lower dies are arranged on one side of the lower clamp, which is opposite to the upper clamp, the upper clamp drives the punch to be close to or far away from the lower clamp, and the upper clamp is used for enabling the upper dies to be correspondingly matched with or separated from the lower dies one by one after penetrating through the clamping plate 9; a forming channel for accommodating and clamping materials is formed between the clamping plate and the lower clamp;
it can be understood that the lower die and the upper die are the same in number and correspond to the upper die one by one to form the whole forming die structure, and a material is formed on the lower die under the pressure of the upper die and is provided with a through hole or other processing modes;
in this embodiment, there are three lower dies, which are a first lower die 4, a second lower die 5 and a third lower die 6, respectively, where the first lower die cooperates with the first upper die to perform punching processing on a processing position to obtain a positioning hole, the second lower die cooperates with the second upper die to perform stepped hole processing on the positioning hole obtained in the previous process, and the third lower die cooperates with the third upper die to perform extrusion cutting processing on the outside of the stepped hole obtained in the previous process, so as to form an external gear structure;
it should be particularly pointed out that a plurality of through holes corresponding to the lower die are arranged on the lower clamp and used for discharging the waste materials or products during processing; for example, the through hole below the first lower die discharges cylindrical parts obtained after extrusion forming of the through hole, and the through hole below the third lower die discharges formed parts.
The lower clamp is used as a main working part of the whole system, is produced by matching with the upper clamp, and comprises a blanking through hole so that the part falls on a fixed position when the machining of the part is finished. Meanwhile, in order to prolong the service life of the die, the clamp is made of high-speed steel materials;
preferably, the micro-cylinder part can be produced while the flange gear part is produced, so that the utilization rate of blanks is improved; the whole machining process is configured, so that the positioning precision in the machining process is effectively improved, and the integral machining efficiency and precision are improved.
The clamping plate structure is the middle part of the die and mainly has the functions of fixing materials when the die works and preventing the materials from causing production errors in the extrusion forming process;
in addition, one end of a forming channel formed by the lower part of the clamping plate and the lower clamp is provided with a guide chute 3, so that the feeding of materials in the forming channel is guided, and the clamping plate is assisted to stably clamp the materials.
Further, in the material feeding direction, different upper dies and corresponding lower dies are used for processing and forming the material step by step;
the blank support is provided with an extension hole 9 which is matched with the matching hole and has the same direction along the axis direction, and the inner wall of the through hole is matched with the outer wall of the upper punch which moves along the axial direction; different upper dies carry out different processing to material processing position, along with the feeding of material, same processing is carried out to the different positions of material to same mould and lower mould to realize whole streamlined manufacturing process.
The mould of traditional little forming process can only carry out single process, if make up then greatly increased the complexity of mould with a plurality of processes, and this application is through carrying out the split with manufacturing procedure to be equipped with corresponding mold processing respectively, can carry out a plurality of processes simultaneously and realize that streamlined production has increased production efficiency.
Furthermore, a first elastic mechanism and a second elastic mechanism are respectively arranged between the upper clamp and the clamping plate and between the clamping plate and the lower clamp, the first elastic mechanism assists the upper clamp to drive the punch to move, and the second elastic mechanism pushes the clamping plate to be far away from the lower clamp;
the first elastic mechanism comprises a plurality of first springs 1 distributed on the bottom surface of the upper clamp, the second elastic mechanism comprises a plurality of second springs 2 distributed on the top surface of the lower clamp, a plurality of guide rods 14 are arranged on the upper clamp, and the guide rods penetrate through holes preset on the clamping plate and are matched with guide holes 8 preset on the lower clamp to slide;
first spring distribute on four angles of last anchor clamps bottom surface, second spring distributes on four angles of anchor clamps top surface down, forms stable resilience structure.
The clamping plate adopts the design of the return spring, so that the pressing force of the part during production is increased, and the clamping plate automatically returns in the return process, so that the feeding is facilitated, and the production efficiency and precision are improved; preferably, a material mixing and fixing mechanism is arranged at one end of the forming channel, and the blank is driven to leave the lower die to be matched with the feeding mechanism to improve the production efficiency while the clamping plate returns.
Example 2
In another exemplary embodiment of the present application, as shown in fig. 1-10, there is further provided a method for operating a progressive die for micro part machining as described in embodiment 1.
The processing method mainly comprises three processes of punching, extruding and shearing forming.
In the first punching step, the sheet material undergoes a punching shear deformation. The plate is processed and punched by the circular punch, and a through hole is formed in the first processing position of the plate and used for positioning in subsequent operation.
In a second extrusion step, the through hole locations are extruded in the thickness direction to form flange features, and then a portion of the material is pressed further into the die holes to form a stepped hole structure.
It is noted that the formed parts in the first two stages are attached to the sheet of metal material, which makes it easier to handle, position and transfer to the next step.
In the third step of shear forming, the gear profile is formed by a shearing operation and the flanged gear piece is removed from the sheet material and ejected from the lower blanking through hole.
By adjusting the perforation length of each operation, different working speeds can be arranged in a stroke, taking into account the machine capacity and the mechanical characteristics of each forming operation. In the production process, the clamping plates are firstly contacted with the guide chute and the materials and then are tightly pressed and then are kept still, the guide rods continuously move downwards to enter the guide holes, and meanwhile, the punch head moves downwards to be contacted with the plates for production. In the punching process, an extrusion process and a forming blanking process with the same punch length are carried out at the same time, so that the production of the progressive multi-layer flange part or the stepped hole is realized.
The method comprises the following specific steps:
feeding the material from one end of the forming channel to enable a first processing position of the material to be located at a first lower die;
the upper clamp drives all the punches to be close to the lower clamp and pushes the clamping plate to clamp the material;
the first upper die extrudes materials downwards to be matched with the first lower die to punch a hole at the first processing position to obtain a positioning hole, and materials do not exist at the second punch and the third punch at the moment;
lifting the upper clamp and the clamping plate, pushing the material to feed by a unit length, and enabling the first machining position to be located at the second lower die and the second machining position to be located at the first lower die;
the upper clamp drives all the punches to be close to the lower clamp downwards, and pushes the clamping plate to clamp the material;
the second upper die extrudes the material downwards to be matched with the second lower die to extrude the first machining position to obtain a stepped hole structure, and meanwhile, the first upper die extrudes the material downwards to punch a hole in the second machining position;
lifting the upper clamp and the clamping plate, pushing the material to feed by a unit length, and enabling the first processing position to be located at the third lower die, the second processing position to be located at the second lower die and the third processing position to be located at the first lower die;
the upper clamp drives all the punches to be close to the lower clamp downwards, and pushes the clamping plate to clamp the material;
and the third lower die downwards extrudes the material to be matched with the third lower die to perform shearing forming processing on the first position, and discharges a processed workpiece, meanwhile, the second upper die downwards extrudes the material to be matched with the second lower die to perform extrusion processing on the second processing position to obtain a stepped hole structure, and the first upper die downwards extrudes the material to perform punching processing on the third processing position to obtain a positioning hole structure.
Repeating the above process, and continuously discharging the processed workpiece to form a progressive processing process.
Preferably, the plurality of upper dies are distributed at equal intervals along the material feeding direction, and the plurality of lower dies (which are not wrongly written) are correspondingly arranged; the feeding length of each step is equal in the feeding process, so that the machining precision is effectively controlled;
the processing positions on the material are linearly distributed and are distributed corresponding to the upper die and the lower die; the method is suitable for strip-shaped plate-shaped materials; the processing flow is split and is respectively matched with the corresponding processing dies, so that a plurality of processes can be simultaneously carried out, and the production efficiency is increased by realizing the production line production.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. A progressive die facing micro-part machining is characterized by comprising an upper clamp, a clamping plate and a lower clamp which are sequentially arranged, wherein a plurality of punches which are sequentially arranged are arranged on the upper clamp, a plurality of upper dies are respectively and correspondingly arranged on the plurality of punches, a plurality of lower dies are arranged on one side of the lower clamp, which is opposite to the upper clamp, the upper clamp drives the punches to be close to or far away from the lower clamp, and the upper dies are matched with or separated from the lower dies in a one-to-one correspondence mode after penetrating through the clamping plate; a forming channel for accommodating and clamping materials is formed between the clamping plate and the lower clamp, and different upper dies and corresponding lower dies are used for processing and forming the materials step by step in the material feeding direction.
2. A progressive die for micro-part machining according to claim 1, wherein said punches are three in number, and have a first upper die, a second upper die and a third upper die respectively disposed thereon, and said lower jig has a first lower die, a second lower die and a third lower die respectively disposed thereon for performing different processes on the material.
3. A progressive die for micro-part tooling as claimed in claim 2, wherein the same upper and lower dies perform the same tooling for different locations of the material as it is fed.
4. A progressive die for micro-part machining according to claim 3, wherein the lower jig is provided with a plurality of through holes corresponding to the lower die for discharging scraps or products during machining.
5. A progressive die for micro-part machining according to claim 1, wherein a first resilient means and a second resilient means are provided between the upper clamp and the clamping plate and between the clamping plate and the lower clamp, respectively, the first resilient means assisting the upper clamp to move the punch, and the second resilient means urging the clamping plate away from the lower clamp.
6. The progressive die for micro-part machining according to claim 5, wherein said first resilient means comprises a plurality of first springs disposed on a bottom surface of said upper fixture, said second resilient means comprises a plurality of second springs disposed on a top surface of said lower fixture, said upper fixture having a plurality of guide rods, said guide rods passing through holes predetermined on said clamping plate and sliding in cooperation with guide holes predetermined on said lower fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020123692.XU CN211679578U (en) | 2020-01-19 | 2020-01-19 | Progressive die for micro part machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020123692.XU CN211679578U (en) | 2020-01-19 | 2020-01-19 | Progressive die for micro part machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211679578U true CN211679578U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020123692.XU Expired - Fee Related CN211679578U (en) | 2020-01-19 | 2020-01-19 | Progressive die for micro part machining |
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| Country | Link |
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| CN (1) | CN211679578U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151650A (en) * | 2020-01-19 | 2020-05-15 | 山东大学 | Progressive die and method for micro-part machining |
| CN113806891A (en) * | 2021-09-23 | 2021-12-17 | 山东大学深圳研究院 | Rapid design method of clamp for adapting to workpiece change |
-
2020
- 2020-01-19 CN CN202020123692.XU patent/CN211679578U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151650A (en) * | 2020-01-19 | 2020-05-15 | 山东大学 | Progressive die and method for micro-part machining |
| CN113806891A (en) * | 2021-09-23 | 2021-12-17 | 山东大学深圳研究院 | Rapid design method of clamp for adapting to workpiece change |
| CN113806891B (en) * | 2021-09-23 | 2023-08-04 | 山东大学深圳研究院 | Quick design method of clamp suitable for workpiece change |
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