CN117020202A - Method for machining powder metallurgy automobile precision part - Google Patents
Method for machining powder metallurgy automobile precision part Download PDFInfo
- Publication number
- CN117020202A CN117020202A CN202311305180.XA CN202311305180A CN117020202A CN 117020202 A CN117020202 A CN 117020202A CN 202311305180 A CN202311305180 A CN 202311305180A CN 117020202 A CN117020202 A CN 117020202A
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- seat
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- forming
- sliding
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 23
- 238000003754 machining Methods 0.000 title claims description 7
- 239000000843 powder Substances 0.000 claims abstract description 67
- 238000001125 extrusion Methods 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 238000000748 compression moulding Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 61
- 238000005192 partition Methods 0.000 claims description 12
- 238000011049 filling Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 18
- 238000003672 processing method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000012856 packing Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009702 powder compression Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to the technical field of powder metallurgy, in particular to a processing method of a powder metallurgy automobile precision part, which comprises the processing steps of powder preparation, compression molding, sintering and post-treatment. According to the invention, the sealing seat is arranged on the forming seat, so that the extrusion seat moves downwards to press powder in the forming seat at the bottom, and powder is added into the forming seat at the top, after the forming by pressing, the sealing seat can move downwards to take out a workpiece, then the extrusion seat can move upwards by the pushing rod to add powder into the forming seat at the bottom, and meanwhile, the extrusion seat moves upwards to press the powder in the forming seat at the top, so that when one extrusion seat moves away from the sealing seat, powder can be added into one forming seat at the same time, and the powder in the other forming seat is pressed by the other extrusion seat, thereby being beneficial to improving the forming efficiency of the workpiece and facilitating the use.
Description
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a method for processing a powder metallurgy automobile precision part.
Background
The powder metallurgy is a process technology that metal powder is used as a raw material, the formed workpiece is sintered to prepare products such as metal materials, composite materials and the like after being pressed and formed, and the powder metallurgy has the advantages of energy conservation, material saving, high product precision and the like, and a powder metallurgy mode is also often adopted when some precise parts of automobiles are produced.
In the process of powder metallurgy, when powder is pressed and formed, metal powder is usually sent into a lower die holder, the powder is pressed by downwards moving an upper die holder, after the pressing is finished, the upper die holder is upwards moved out, a pressed and formed workpiece is taken out of the lower die holder, then the metal powder is added into the lower die holder again, and the process is repeated for continuous production, so that the powder can be introduced into the lower die holder only when the upper die holder is upwards moved out of the lower die holder in the pressing process, the pressing process is complex, and more time is required for refilling the metal powder.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a processing method of a powder metallurgy automobile precision part, wherein a sealing seat is arranged on a forming seat, a pressing seat can be moved downwards through a connecting plate to press powder in the forming seat at the bottom, the powder is added into the forming seat at the top, after the pressing and forming, the pressing seat can be moved upwards through a pushing rod, at the moment, a sliding seat is staggered with the pressing seat to expose a conveying groove, then the powder can be added into the forming seat at the bottom through the conveying groove, and meanwhile, the pressing seat can be moved upwards to press the powder in the forming seat at the top, so that the efficiency of workpiece forming is improved, and the processing method is convenient to use.
The aim of the invention can be achieved by the following technical scheme:
the processing method of the powder metallurgy automobile precision part comprises the steps of powder preparation, compression molding, sintering and post-treatment, and comprises the following specific steps:
(1) Powder preparation: preparing the raw materials into powder by an atomization method, and mixing various required powders;
(2) And (5) press forming: conveying the powder into a processing device, and compacting the powder by the processing device;
(3) Sintering: firing the workpiece pressed in the step (2) in a high-temperature furnace in protective atmosphere to firmly weld powder particles together, and then cooling the workpiece through a cooling section of the high-temperature furnace;
(4) Post-treatment: and (3) coining the fired workpiece through a press, and then quenching the workpiece.
The method is further characterized in that: when the powders are mixed in step (1), a binder is added to the mixed powder.
The method is further characterized in that: the processing device comprises a supporting module and two forming modules, the supporting module comprises an outer frame, the inner side of the outer frame is fixedly connected with a partition plate, a connecting plate is arranged between the two partition plates, the inner side of the outer frame is fixedly connected with hydraulic rods corresponding to four corners of the connecting plate, the output ends of the hydraulic rods are in transmission connection with the top surface of the connecting plate, the forming modules comprise forming seats, the side surfaces of the forming seats are fixedly connected with the inner side surfaces of the adjacent partition plates, the top parts of the inner side surfaces of the forming seats are slidably connected with extrusion seats, two opposite sides of the forming seats are respectively provided with a blocking seat, the top surfaces of the connecting plate and the bottom surfaces of the connecting plate are respectively fixedly connected with two pushing rods, the bottoms of the side surfaces of the blocking seats, which are positioned at the bottoms, are respectively provided with a sliding seat, the inner side surfaces of the blocking seats are slidably connected with conveying grooves, the top ends of the conveying pipes are respectively penetrated into the inner side surfaces of the blocking seats, and the inner side surfaces of the two side surfaces of the blocking seats are respectively fixedly connected with the sliding blocks.
The connecting plate can be moved downwards through the hydraulic rod, the connecting plate can drive the extrusion seat to move downwards through the push rod, at this time, the powder in the forming seat at the bottom can be pressed, the powder can be supported on the sliding seat during pressing, the sliding seat and the bottom extrusion seat are aligned with each other, the powder can be added into the forming seat at the top, after the forming by pressing, the bottom blocking seat can be moved downwards, the formed workpiece is extruded out of the forming seat through the extrusion seat, then the workpiece can be taken out, after the workpiece is taken out, the extrusion seat can be moved upwards through the push rod, at this time, the sliding seat can be moved downwards under the action of gravity, the sliding block can be moved to the bottom of the sliding groove, the sliding seat and the extrusion seat are staggered, so that the end part of the conveying groove is exposed, at this time, the powder can enter the forming seat at the bottom through the conveying groove, the powder can be filled into the forming seat at the bottom, and simultaneously, the top extrusion seat can be moved upwards, when one extrusion seat is far away from the forming seat, the formed workpiece can be simultaneously pressed, the other extrusion seat can be added into the forming seat, and the efficiency of the forming seat can be improved by pressing the other extrusion seat, and the forming efficiency of the workpiece can be improved conveniently.
The method is further characterized in that: two inside packing pole that is provided with of shaping seat, packing pole both ends all with adjacent sealing and keeping off seat side contact, two extrusion seat medial surface all with packing pole side sliding connection, and sliding seat side and packing pole side sliding connection, packing pole side fixedly connected with support frame, and support frame bottom surface and the baffle top surface fixed connection that is located the bottom, two equal fixedly connected with in baffle looks back and four baffles of frame medial surface edge fixed connection, accessible support frame fixed packing pole, the inside frame is blocked to the accessible baffle of suppression annular part accessible.
The method is further characterized in that: the inner bottom surface of the outer frame and the inner bottom surface are both connected with two limiting frames in a sliding manner, the top surface of the limiting frame is contacted with the bottom surface of the adjacent blocking seat, the inner side surface of the limiting frame is fixedly connected with a connecting rack, the inner bottom surface of the outer frame and the inner bottom surface of the inner frame are respectively fixedly connected with two fixing seats, the top ends of the fixing seats are connected with the inner side surface of the adjacent limiting frame in a sliding manner, the top ends of the fixing seats are positioned in the limiting frames and are rotationally connected with linkage gears through shaft rods, the top parts of the linkage gears are in meshed transmission with the bottom parts of the adjacent connecting racks, the limiting frames can support the blocking seat, so that the position of the blocking seat is limited, the linkage gears can rotate, the connecting racks can drive the connecting racks to move, the adjacent two limiting frames move back to back, the limiting frames are separated from the blocking seat, and then the blocking seat can be moved away from the forming seat.
The method is further characterized in that: the top surface of the connecting plate corresponds to the limiting frame fixedly connected with two adjusting rods, the bottom of the side surface of each adjusting rod corresponds to the sliding frame, the bottom of the side surface of each adjusting rod is fixedly connected with a fixed ring which is in contact with the inner top surface of the adjacent sliding frame, the inner side surface of each sliding frame corresponds to the adjacent pushing rack, when the connecting plate moves downwards, the sliding frame can move downwards with the pushing rack, and as the pushing rack corresponds to the adjacent linkage gear, when the pushing rack is meshed with the linkage gear, the pushing rack can toggle the linkage gear to move, so that the limiting frame moves.
The method is further characterized in that: the bottom of the adjusting rod is rotationally connected with an adjusting gear through a shaft rod, the bottom surface of the blocking seat is fixedly connected with a fixing frame, both side surfaces of the two sides of the fixing frame are fixedly connected with adjusting racks, the adjusting racks are meshed with adjacent adjusting gears for transmission, and the two adjusting gears are located between two pushing racks.
When the adjusting rod moves downwards, the adjusting gear can move downwards to roll on the adjusting rack, the pushing rack moves downwards, when the pushing rack is in contact engagement with the linkage gear, the pushing rack and the adjusting gear can be kept separated due to the fact that the adjusting gear rotates on the adjusting rack, the pushing rack is enabled to stir the linkage gear to rotate, the two limiting frames move back to back, the limiting frames are enabled to be separated from the blocking seat, then the adjusting gear can roll on the pushing rack, at the moment, the adjusting gear can stir the adjusting rack to move downwards, the bottom of the forming seat is exposed through the downward movement of the blocking seat, the moving distance of the adjusting rack is twice that of the adjusting gear, the blocking seat and the extrusion seat can be enabled to send a workpiece, and then the workpiece can be taken out through a matched manipulator.
Then the connecting plate can be moved upwards through the hydraulic rod to enable the adjusting gear to move upwards, the blocking seat slides between the two limiting frames, so that the two limiting frames can be prevented from moving oppositely through the blocking seat, the connecting rack can be prevented from pushing the rack to move upwards through the linkage gear, the adjusting gear can roll on the pushing rack, the adjusting rack can be rubbed to move upwards through the adjusting gear to enable the blocking seat to move upwards to the original position, at the moment, the fixing ring can be contacted with the inner top surface of the sliding frame again, the pushing rack can be separated from the adjusting gear, the blocking seat can not move upwards any more, the adjusting rack stops moving upwards, the adjusting gear rolls on the adjusting rack, the adjusting rod enables the sliding frame to move upwards synchronously through the fixing ring, the pushing rack moves upwards to drive the linkage gear to rotate reversely, the limiting frame moves reversely to the bottom of the blocking seat, and then the adjusting gear can continue moving upwards to the original position.
The method is further characterized in that: the bottom surface and interior top surface correspond two locating plates of equal fixedly connected with of spacing frame in the frame, and be located two spacing frames of same height and be located between two locating plates, make spacing frame remove and keep off the seat and break away from at its top, spacing frame will contact with the locating plate, accessible locating plate prevents spacing frame removal like this, and the connecting rack will prevent through the linkage gear and promote rack downwardly moving, makes adjusting gear roll on promoting the rack smoothly.
The invention has the beneficial effects that:
1. the forming seat is provided with the blocking seat, the extrusion seat can move downwards through the connecting plate, powder in the forming seat at the bottom can be pressed, the powder is added into the forming seat at the top, after the forming by pressing, the blocking seat can move downwards, a formed workpiece is extruded out of the forming seat through the extrusion seat, the workpiece can be taken out, then the extrusion seat can move upwards through the pushing rod, the sliding seat is staggered with the extrusion seat to expose the conveying groove, then the powder can be added into the forming seat at the bottom through the conveying groove, and meanwhile, the powder in the forming seat at the top can be pressed by the upward movement of the extrusion seat, so that the powder can be simultaneously added into one forming seat when one extrusion seat moves away from the blocking seat, and the powder in the other forming seat can be pressed through the other extrusion seat, thereby being beneficial to improving the forming efficiency of the workpiece and being convenient to use;
2. the adjusting gear is connected with the bottom end of the adjusting rod in a rotating mode, when the pushing rod enables the extrusion seat to move downwards, the adjusting rod can drive the adjusting gear and the pushing rack to move downwards, the adjusting gear can roll on the adjusting rack, after the pushing rack contacts with the linkage gear, the linkage gear can be stirred to rotate, so that the two limiting frames move back to back, after the limiting frames are separated from the blocking seat, the limiting frames are blocked to move through the locating plate, the pushing rack stops moving downwards, at the moment, the adjusting gear continues to move downwards, the pushing rack can roll, the blocking seat is enabled to move downwards through the adjusting rack, the moving distance of the adjusting rack is twice that of the adjusting gear, and therefore the blocking seat can move downwards relative to the extrusion seat, formed workpieces are loosened, the operation is simple, and improvement of the powder compression forming rate is facilitated.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of the processing method of the invention;
FIG. 2 is a schematic view of the overall structure of the tooling of the present invention;
FIG. 3 is a schematic diagram showing the front view of the inside of the outer frame in the present invention;
FIG. 4 is a schematic view of a separator plate structure according to the present invention;
FIG. 5 is a schematic view showing the front structure of the inside of the forming seat in the invention;
FIG. 6 is a schematic view showing the internal structure of the sliding seat according to the present invention;
FIG. 7 is a schematic view of a limiting frame structure in the present invention;
FIG. 8 is a schematic view of a seal seat according to the present invention;
FIG. 9 is a schematic top view of the adjusting gear of the present invention;
FIG. 10 is a schematic view of the internal structure of the limiting frame according to the present invention;
fig. 11 is a schematic view of the internal structure of the sliding frame in the present invention.
In the figure: 100. a support module; 110. an outer frame; 111. a partition plate; 112. a baffle; 113. a hydraulic rod; 114. a positioning plate; 120. a limit frame; 121. the connecting rack; 130. a connecting plate; 131. a push rod; 132. an adjusting rod; 133. an adjusting gear; 134. a fixing ring; 140. a fixing seat; 141. a linkage gear; 150. a sliding frame; 151. pushing the rack; 200. a molding module; 210. forming a seat; 220. a blocking seat; 221. a fixing frame; 222. adjusting the rack; 230. extruding a base; 231. a sliding seat; 232. a sliding groove; 233. a sliding block; 234. a delivery tube; 235. a conveying trough; 300. a filler rod; 310. and (5) supporting frames.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, 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.
Referring to fig. 1-11, a method for processing a powder metallurgy automobile precision part comprises the steps of powder preparation, compression molding, sintering and post-treatment, and specifically comprises the following steps:
(1) Powder preparation: preparing the raw materials into powder by an atomization method, and mixing various required powders;
(2) And (5) press forming: conveying the powder into a processing device, and compacting the powder by the processing device;
(3) Sintering: firing the workpiece pressed in the step (2) in a high-temperature furnace in protective atmosphere to firmly weld powder particles together, and then cooling the workpiece through a cooling section of the high-temperature furnace;
(4) Post-treatment: and (3) coining the fired workpiece through a press, and then quenching the workpiece.
When the powders are mixed in step (1), a binder is added to the mixed powder.
The processing device comprises a supporting module 100 and two forming modules 200, the supporting module 100 comprises an outer frame 110, the inner side surface of the outer frame 110 is fixedly connected with a partition board 111, a connecting plate 130 is arranged between the two partition boards 111 on the inner side of the outer frame 110, the inner top surface of the outer frame 110 is fixedly connected with a hydraulic rod 113 corresponding to the four corners of the connecting plate 130, the output end of the hydraulic rod 113 is in transmission connection with the top surface of the connecting plate 130, the forming modules 200 comprise forming seats 210, the side surfaces of the forming seats 210 are fixedly connected with the inner side surfaces of the adjacent partition boards 111, the top surfaces of the inner side surfaces of the forming seats 210 are slidably connected with extrusion seats 230, the opposite surfaces of the two forming seats 210 are respectively provided with a blocking seat 220, the top surfaces of the connecting plate 130 and the bottom surfaces of the extrusion seats 230 are respectively fixedly connected with two pushing rods 131, the opposite surfaces of the two extrusion seats 230 are respectively fixedly connected with one ends of the adjacent pushing rods 131, the bottom surfaces of the blocking seat 220 are respectively provided with a notch, the inner side surfaces of the sliding seat 231 is slidably connected with a conveying groove 235, the top surface of the conveying pipe 234 is fixedly connected with the top of the conveying groove 234, and the top surfaces of the conveying pipe 234 passes through the inside the blocking seat 220, and the inner side surfaces of the blocking seat 232 are respectively fixedly connected with the sliding blocks and the sliding surfaces of the sliding blocks 232.
The connecting plate 130 can be moved downwards through the hydraulic rod 113, the connecting plate 130 can drive the extrusion seat 230 to move downwards through the pushing rod 131, at this time, the extrusion seat 230 can be made to press powder in the forming seat 210 positioned at the bottom, the powder can support the sliding seat 231 when in pressing, the sliding seat 231 and the bottom extrusion seat 230 are aligned at the bottom surface, grooves and blocks with the same structures as the grooves, the sliding seat 231 and the like on the bottom extrusion seat 230 can be formed on the sealing seat 220 positioned at the top, and the like, when the connecting plate 130 moves downwards, the powder can be added into the forming seat 210 positioned at the top through the conveying pipe 234 and the conveying groove 235 on the top sealing seat 220, after the powder is pressed and formed, the bottom sealing seat 220 can be made to move downwards, and a formed workpiece is extruded and formed into the forming seat 210 through the extrusion seat 230, after the workpiece is taken out, the workpiece is made to move upwards through the pushing rod 131, at this time, the sliding seat 231 can move downwards under the action of gravity, the sliding block 233 is made to the bottom of the sliding seat 232, the sliding seat 231 is made to be staggered with the extrusion seat 230, and the conveying groove 235 is exposed, so that the conveying groove 235 is formed at the end part of the conveying groove 235 is exposed, and the conveying groove 235 can be filled into the forming seat 210, and the forming powder 210 can be formed in the forming seat 210, and the other sealing seat is made to move, and the forming seat 210 is made to move, and the forming the powder 210 is made to move into the forming seat 210, and the forming seat is simultaneously, and the forming seat 210.
When in use, the opening position of the sliding groove 232 on the extrusion seat 230 can be adjusted according to the requirement, so that the end of the conveying groove 235 is staggered with the sliding groove 232, and powder is prevented from entering the sliding groove 232.
The inside filling rod 300 that is provided with of two shaping seat 210, filling rod 300 both ends all with adjacent fender seat 220 side contact, two extrusion seat 230 medial surface all with filling rod 300 side sliding connection, and sliding seat 231 side and filling rod 300 side sliding connection, filling rod 300 side fixedly connected with support frame 310, and support frame 310 bottom surface and the baffle 111 top surface fixed connection that is located the bottom, two baffles 111 equal fixedly connected with and four baffles 112 of frame 110 medial surface edge fixed connection, accessible support frame 310 fixed filling rod 300, the annular part accessible baffle 112 of being convenient for suppresses inside the frame 110.
The inner bottom surface of the outer frame 110 and the inner bottom surface are both in sliding connection with two limiting frames 120, the top surface of each limiting frame 120 is in contact with the bottom surface of the adjacent blocking seat 220, the inner side surface of each limiting frame 120 is fixedly connected with a connecting rack 121, the inner bottom surface of the outer frame 110 and the inner bottom surface of each corresponding limiting frame 120 are both fixedly connected with two fixing seats 140, the top ends of the fixing seats 140 are in sliding connection with the inner side surface of the adjacent limiting frames 120, the top ends of the fixing seats 140 are positioned in the limiting frames 120 and are rotationally connected with a linkage gear 141 through a shaft rod, the top of the linkage gear 141 is in meshed transmission with the bottom of the adjacent connecting rack 121, the limiting frames 120 can support the blocking seat 220, the linkage gear 141 can rotate the linkage gear 141, the connecting rack 121 can be driven to move, the connecting rack 121 can drive the limiting frames 120 to move, the adjacent two limiting frames 120 move oppositely, the limiting frames 120 are separated from the blocking seat 220, and then the blocking seat 220 can be moved away from the forming seat 210.
The top surface and the bottom surface of the connecting plate 130 are fixedly connected with two adjusting rods 132 corresponding to the limiting frame 120, the bottom of the side surface of each adjusting rod 132 is correspondingly and slidably connected with a sliding frame 150, the bottom of the side surface of each adjusting rod 132 is fixedly connected with a fixed ring 134 which is contacted with the inner top surface of the adjacent sliding frame 150, the inner side surface of each sliding frame 150 corresponds to the adjacent pushing rack 151, when the connecting plate 130 moves downwards, the sliding frame 150 and the pushing rack 151 can move downwards, and because the pushing rack 151 corresponds to the adjacent linkage gear 141, when the pushing rack 151 is meshed with the linkage gear 141, the pushing rack 151 can stir the linkage gear 141 to move, so that the limiting frame 120 moves.
The bottom end of the adjusting rod 132 is rotationally connected with an adjusting gear 133 through a shaft rod, the bottom surface of the blocking seat 220 is fixedly connected with a fixing frame 221, both side surfaces of the fixing frame 221 are fixedly connected with adjusting racks 222, the adjusting racks 222 are meshed with the adjacent adjusting gears 133 for transmission, and the two adjusting gears 133 are positioned between the two pushing racks 151.
When the adjusting rod 132 moves downwards, the adjusting gear 133 can be moved downwards to roll on the adjusting rack 222, the pushing rack 151 moves downwards, when the pushing rack 151 is in contact engagement with the linkage gear 141, the pushing rack 151 and the adjusting gear 133 can be kept separated due to the fact that the adjusting gear 133 rotates on the adjusting rack 222, the pushing rack 151 toggles the linkage gear 141 to rotate, the two limiting frames 120 move back to back, the limiting frames 120 are separated from the blocking seat 220, then the pushing rack 151 can roll, at the moment, the adjusting gear 133 can toggle the adjusting rack 222 to move downwards, the blocking seat 220 moves downwards to expose the bottom of the forming seat 210, the moving distance of the adjusting rack 222 is twice as long as that of the adjusting gear 133, the blocking seat 220 and the pressing seat 230 can be used for conveying workpieces, and then the matched mechanical hand can be used for taking out the workpieces.
Then, the connecting plate 130 can be moved upwards through the hydraulic rod 113 to enable the adjusting gear 133 to move upwards, the blocking seat 220 slides between the two limiting frames 120, so that the blocking seat 220 can prevent the two limiting frames 120 from moving towards each other, the connecting rack 121 can prevent the pushing rack 151 from moving upwards through the linkage gear 141, the adjusting gear 133 can roll on the pushing rack 151, the adjusting gear 133 can rub the adjusting rack 222 to move upwards, the blocking seat 220 moves upwards to the original position, at the moment, the fixing ring 134 can be contacted with the inner top surface of the sliding frame 150 again, the pushing rack 151 can be separated from the adjusting gear 133, the adjusting rack 222 stops moving upwards because the blocking seat 220 does not move upwards any more, the adjusting gear 133 rolls on the adjusting rack 222, the sliding frame 150 is synchronously moved upwards through the fixing ring 134, the pushing rack 151 moves upwards to drive the linkage gear 141 to rotate reversely, the limiting frames 120 reversely move to the bottom of the blocking seat 220, and then the adjusting gear 133 can continue moving upwards to the original position.
The inner bottom surface of the outer frame 110 and the inner top surface corresponding to the limiting frame 120 are fixedly connected with two positioning plates 114, the two limiting frames 120 positioned at the same height are positioned between the two positioning plates 114, after the limiting frame 120 moves and is separated from the blocking seat 220 at the top of the limiting frame, the limiting frame 120 is contacted with the positioning plates 114, so that the limiting frame 120 can be prevented from moving by the positioning plates 114, the connecting rack 121 can prevent the pushing rack 151 from moving downwards by the linkage gear 141, and the adjusting gear 133 can smoothly roll on the pushing rack 151.
Working principle: when the device is used, the connecting plate 130 is driven to move downwards through the hydraulic rod 113, the connecting plate 130 can drive the extrusion seat 230 to move downwards through the pushing rod 131, the adjusting rod 132 is driven to move downwards, when the extrusion seat 230 at the bottom moves downwards, powder in the forming seat 210 at the bottom can support the sliding seat 231, so that the sliding seat 231 moves upwards relative to the extrusion seat 230, the bottoms of the sliding seat 231 and the bottom extrusion seat 230 are aligned, powder in the forming seat 210 at the bottom can be pressed through the extrusion seat 230 and the sliding seat 231 at the bottom, meanwhile, the top extrusion seat 230 moves away from the adjacent sealing seat 220, and powder can be filled into the forming seat 210 at the top through a groove hole in the sealing seat 220 at the top;
when the adjusting rod 132 moves downwards, the adjusting gear 133 can be moved downwards, the limiting frame 120 blocks the blocking seat 220, so that the blocking seat 220 cannot move away from the forming seat 210, the adjusting gear 133 can roll on the adjusting rack 222, the pushing rack 151 is separated from the adjusting gear 133 and moves downwards, when the pushing rack 151 is in contact engagement with the linkage gear 141, the linkage gear 141 can be stirred to rotate by the pushing rack 151, the linkage gear 141 can drive the connecting rack 121 to move, and the connecting rack 121 can drive the limiting frame 120 to move, so that the two limiting frames 120 move oppositely;
after the limit frame 120 is separated from the blocking seat 220 at the top of the limit frame 120, the limit frame 120 is contacted with the positioning plate 114, so that the limit frame 120 is prevented from moving through the positioning plate 114, at the moment, the connecting rack 121 is prevented from moving downwards by the linkage gear 141, and the blocking seat 220 is prevented from moving downwards by the connecting rack 121, when the limit frame 120 is not prevented from moving downwards any more, the adjusting gear 133 can roll on the pushing rack 151, the adjusting gear 133 can stir the adjusting rack 222 to move downwards, so that the fixing frame 221 drives the blocking seat 220 to move downwards, the bottom of the forming seat 210 is exposed, the pressing seat 230 presses the formed workpiece out of the forming seat 210, and the blocking seat 220 moves downwards relative to the pressing seat 230 due to the twice of the moving distance of the adjusting rack 222, so that the blocking seat 220 and the pressing seat 230 send the workpiece out, and then the workpiece can be taken out;
after the workpiece is taken out, the connecting plate 130 can be moved upwards through the hydraulic rod 113, at this time, powder in the top forming seat 210 can be extruded and formed through the extrusion seat 230 at the top, the connecting plate 130 can drive the adjusting rod 132 to move upwards, the adjusting gear 133 moves upwards, the position of the limiting frames 120 can be limited because the blocking seat 220 slides between the two limiting frames 120, the connecting rack 121 can prevent the pushing rack 151 from moving upwards through the linkage gear 141, the adjusting gear 133 can roll on the pushing rack 151 when moving upwards, the fixing ring 134 can be contacted with the inner top surface of the sliding frame 150 again when the bottom of the forming seat 210 is blocked, and the pushing rack 151 can be separated from the adjusting gear 133, at this time, the blocking seat 220 will not move upwards any more, so that the adjusting rack 222 stops moving upwards, the adjusting gear 133 continues to move upwards and can roll on the adjusting rack 222, meanwhile, the adjusting rod 132 can move the sliding frame 150 upwards through the fixing ring 134, the sliding frame 150 can drive the pushing rack 151 to move upwards, so that the pushing rack 151 can drive the linkage gear 141 to rotate reversely, the linkage gear 141 can drive the connecting rack 121 to move reversely, the limiting frame 120 moves reversely to the bottom of the blocking seat 220, so that the blocking seat 220 is supported by the limiting frame 120 continuously, after the pushing rack 151 is separated from the linkage gear 141, the two limiting frames 120 can contact with each other again, and then the adjusting gear 133 can continue to roll upwards on the adjusting rack 222;
when the connecting plate 130 moves upwards, the pushing rod 131 can drive the extrusion seat 230 to move upwards, the sliding seat 231 slides downwards relative to the extrusion seat 230 under the action of gravity, the end of the conveying groove 235 is exposed, after the blocking seat 220 moves to the bottom of the forming seat 210 again, the forming seat 210 is blocked, powder can be conveyed into the conveying groove 235 through the conveying pipe 234, so that the powder is filled into the forming seat 210, and after the extrusion seat 230 moves upwards to the original position, the connecting plate 130 can move downwards again to press the powder.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (7)
1. The method for processing the powder metallurgy automobile precision part is characterized by comprising the steps of powder preparation, compression molding, sintering and post-treatment, and comprises the following specific steps:
(1) Powder preparation: preparing the raw materials into powder by an atomization method, and mixing various required powders;
(2) And (5) press forming: conveying the powder into a processing device, and compacting the powder by the processing device;
(3) Sintering: firing the workpiece pressed in the step (2) in a high-temperature furnace in protective atmosphere to firmly weld powder particles together, and then cooling the workpiece through a cooling section of the high-temperature furnace;
(4) Post-treatment: coining the fired workpiece by a press, and then quenching the workpiece;
the processing device in the step (2) comprises a supporting module (100) and two forming modules (200), the supporting module (100) comprises an outer frame (110), the inner side surface of the outer frame (110) is fixedly connected with a partition plate (111), a connecting plate (130) is arranged between the two partition plates (111) on the inner side of the outer frame (110), the four corners of the inner top surface of the outer frame (110) corresponding to the connecting plate (130) are fixedly connected with hydraulic rods (113), the output ends of the hydraulic rods (113) are in transmission connection with the top surface of the connecting plate (130), the forming modules (200) comprise forming seats (210), the side surfaces of the forming seats (210) are fixedly connected with the inner side surfaces of adjacent partition plates (111), the top surfaces of the forming seats (210) are in sliding connection with extrusion seats (230), the two opposite sides of the forming seats (210) are respectively provided with sealing seats (220), the top surfaces and the bottom surfaces of the connecting plate (130) corresponding to the extrusion seats (230) are respectively fixedly connected with two pushing rods (131), one end surfaces of the two opposite sides of the two extrusion seats (230) are respectively connected with the adjacent pushing rods (131), the inner sides of the two pushing rods are respectively provided with a sliding groove (231), the sliding groove (231) is arranged on the inner sides of the sliding seats (231), the top surface of the sliding seat (231) is fixedly connected with a conveying pipe (234) communicated with the top of the conveying groove (235), the top end of the conveying pipe (234) penetrates through the inside of the blocking seat (220), the inner side surfaces of two sides of the notch are provided with sliding grooves (232), and the side surfaces of two sides of the sliding seat (231) are fixedly connected with sliding blocks (233) which are in sliding connection with the inner side surfaces of the adjacent sliding grooves (232).
2. The method for manufacturing a precision part of a powder metallurgy automobile according to claim 1, wherein a binder is added to the mixed powder at the time of mixing the powder in the step (1).
3. The method for machining the powder metallurgy automobile precision part according to claim 1, wherein a filling rod (300) is arranged inside two forming seats (210), two ends of the filling rod (300) are in contact with the side surfaces of adjacent blocking seats (220), the inner side surfaces of two extrusion seats (230) are in sliding connection with the side surfaces of the filling rod (300), the side surfaces of sliding seats (231) are in sliding connection with the side surfaces of the filling rod (300), a supporting frame (310) is fixedly connected with the side surfaces of the filling rod (300), the bottom surface of the supporting frame (310) is fixedly connected with the top surface of a partition plate (111) positioned at the bottom, and four baffle plates (112) fixedly connected with the edges of the inner side surfaces of the outer frame (110) are fixedly connected with the opposite sides of the partition plate (111).
4. The method for machining the powder metallurgy automobile precision part according to claim 1, wherein two limiting frames (120) are slidably connected to the inner bottom surface and the inner bottom surface of the outer frame (110), the top surface of each limiting frame (120) is in contact with the bottom surface of an adjacent blocking seat (220), a connecting rack (121) is fixedly connected to the inner side surface of each limiting frame (120), two fixing seats (140) are fixedly connected to the inner bottom surface of the outer frame (110) and the inner bottom surface corresponding to the limiting frames (120), the top ends of the fixing seats (140) are slidably connected with the inner side surface of each adjacent limiting frame (120), a linkage gear (141) is rotatably connected to the top ends of the fixing seats (140) inside the limiting frames (120) through a shaft rod, and the tops of the linkage gears (141) are in meshed transmission with the bottoms of the adjacent connecting racks (121).
5. The method for machining the powder metallurgy automobile precision part according to claim 4, wherein the top surface and the bottom surface of the connecting plate (130) are fixedly connected with two adjusting rods (132) corresponding to the limiting frames (120), the bottoms of the side surfaces of the adjusting rods (132) are correspondingly and slidably connected with sliding frames (150), the bottoms of the side surfaces of the adjusting rods (132) are fixedly connected with fixing rings (134) which are contacted with the inner top surfaces of adjacent sliding frames (150), and the inner sides of the sliding frames (150) are correspondingly and adjacently pushed racks (151).
6. The method for machining the powder metallurgy automobile precision part according to claim 5, wherein an adjusting gear (133) is rotatably connected to the bottom end of the adjusting rod (132) through a shaft rod, a fixing frame (221) is fixedly connected to the bottom surface of the blocking seat (220), adjusting racks (222) are fixedly connected to both side surfaces of the fixing frame (221), the adjusting racks (222) are meshed with adjacent adjusting gears (133) for transmission, and the two adjusting gears (133) are located between two pushing racks (151).
7. The method for machining a powder metallurgy automobile precision part according to claim 4, wherein two positioning plates (114) are fixedly connected to corresponding limiting frames (120) on the inner bottom surface and the inner top surface of the outer frame (110), and the two limiting frames (120) located at the same height are located between the two positioning plates (114).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311305180.XA CN117020202A (en) | 2023-10-10 | 2023-10-10 | Method for machining powder metallurgy automobile precision part |
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| CN202311305180.XA CN117020202A (en) | 2023-10-10 | 2023-10-10 | Method for machining powder metallurgy automobile precision part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117705540A (en) * | 2024-02-04 | 2024-03-15 | 包头市科锐微磁新材料有限责任公司 | Isotropic neodymium iron boron rapid quenching magnetic powder sample preparation device |
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| CN113210604A (en) * | 2021-05-25 | 2021-08-06 | 宁波日港粉末冶金有限公司 | Powder metallurgy manufacturing equipment of automobile transmission part and manufacturing method thereof |
| CN217252818U (en) * | 2022-02-11 | 2022-08-23 | 重庆骏翔机电技术有限责任公司 | Extrusion molding device is used in processing of aluminum alloy automobile spare and accessory part |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210604A (en) * | 2021-05-25 | 2021-08-06 | 宁波日港粉末冶金有限公司 | Powder metallurgy manufacturing equipment of automobile transmission part and manufacturing method thereof |
| CN217252818U (en) * | 2022-02-11 | 2022-08-23 | 重庆骏翔机电技术有限责任公司 | Extrusion molding device is used in processing of aluminum alloy automobile spare and accessory part |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117705540A (en) * | 2024-02-04 | 2024-03-15 | 包头市科锐微磁新材料有限责任公司 | Isotropic neodymium iron boron rapid quenching magnetic powder sample preparation device |
| CN117705540B (en) * | 2024-02-04 | 2024-05-03 | 包头市科锐微磁新材料有限责任公司 | Isotropic neodymium iron boron rapid quenching magnetic powder sample preparation device |
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