CN110842043A - Longitudinal-torsional composite ultrasonic auxiliary extrusion method and device - Google Patents
Longitudinal-torsional composite ultrasonic auxiliary extrusion method and device Download PDFInfo
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- CN110842043A CN110842043A CN201911233772.9A CN201911233772A CN110842043A CN 110842043 A CN110842043 A CN 110842043A CN 201911233772 A CN201911233772 A CN 201911233772A CN 110842043 A CN110842043 A CN 110842043A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 155
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 26
- 238000003466 welding Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/001—Extruding metal; Impact extrusion to improve the material properties, e.g. lateral extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a longitudinal-torsional composite ultrasonic auxiliary extrusion method and a device, comprising an energy converter, an amplitude transformer, an extrusion shaft and an extrusion die, wherein the energy converter and the amplitude transformer are fixedly connected together; the amplitude transformer is fixed in the hollow extrusion shaft, one end of the extrusion container is provided with the extrusion die, and the extrusion gasket can extend into the other end of the extrusion container; the extrusion shaft extrudes the heated blank into the extrusion barrel, then the product is extruded through the extrusion die, the ultrasonic generator is connected with the transducer to generate longitudinal-torsional composite vibration, ultrasonic assistance is realized, and the plasticity of metal is increased.
Description
The technical field is as follows:
the invention relates to extrusion equipment, in particular to a longitudinal-torsional composite ultrasonic auxiliary extrusion method and device.
Background art:
with the rapid development of science and technology, metal extrusion plays an increasingly important role in society, but in the conventional extrusion process, due to the uneven fluidity of metal during extrusion, the phenomenon of uneven structure performance of the surface layer and the center, and the head and the tail of an extruded product exists. The extrusion tool and die have bad working conditions and large loss of the tool and die, the ingredients are in an approximately closed state during extrusion, and the three-way pressure is high, so that the die has a high pressure effect. Meanwhile, the tool die is usually subjected to high temperature and high friction during hot extrusion, so that the strength and the service life of the die are greatly influenced. The metal deformation of the workpiece surface is not ideal and the desired effect is not achieved in many cases.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: overcomes the defects of the prior art, and provides a longitudinal-torsional composite ultrasonic auxiliary extrusion method and a device which have reasonable design, increase metal plasticity, reduce the friction force between a blank and a die, improve the product quality and prolong the service life of the die.
The technical scheme of the invention is as follows:
a longitudinal-torsional composite ultrasonic auxiliary extrusion method comprises the following steps:
a. fixedly connecting the transducer with an amplitude transformer, wherein strip-shaped spiral grooves are uniformly distributed at intervals along the circumference at the small end of the amplitude transformer, and the small end of the amplitude transformer is connected with an extrusion gasket through a stud;
b. arranging a hollow extrusion shaft, fixing the amplitude transformer in the inner cavity of the extrusion shaft, arranging an extrusion container, arranging an extrusion die at one end of the extrusion container, and enabling an extrusion gasket to extend into the other end of the extrusion container;
c. the extrusion shaft extrudes the heated blank into the extrusion cylinder, then the product is extruded through the extrusion die, the ultrasonic generator is connected with the transducer to generate longitudinal-torsional composite vibration, the vibration of the amplitude transformer is transmitted to the stud, and the stud is transmitted to the extrusion gasket, so that the effect of ultrasonic assistance is realized, the plasticity of metal is increased, the deformation resistance is reduced, the metal flowability is good, the stress of a workpiece is uniform, the friction between the blank and the die wall is reduced, the service life of the die is prolonged, and the better surface quality and the dimensional accuracy of a formed workpiece are obtained.
The extrusion die comprises a die frame, a rear ring, a front ring, a die sleeve, a die pad, an upper die, a lower die, a positioning pin and a connecting bolt, wherein the upper die is provided with a shunting hole, a shunting bridge and a die core, and the lower die is provided with a welding chamber and a die hole cavity; the extrusion gasket extrudes a blank, the blank flows into the welding chamber of the lower die through the shunting hole of the upper die, the welding chamber collects metal flowing out from the shunting hole together for welding again, and the extrusion force is continuously increased until the die hole is extruded due to continuous collection of the metal, so that ultrasonic-assisted extrusion is realized.
The extrusion cylinder consists of an inner liner and an outer sleeve which are connected by interference fit and are combined together by hot fitting; the extrusion cylinder is connected with the extrusion die in a plane matching mode, the die core is fixed at the center of the upper die through a bolt, and the circumferential surface of the die core is provided with threads.
The extrusion shaft is a stepped hollow shaft, the large end of the amplitude transformer is provided with a connecting flange, the connecting flange is fixed on the stepped end face of the extrusion shaft through a pin, and the small end of the amplitude transformer and the end part of the extrusion shaft are on a vertical plane.
The cylindrical surface of the extrusion gasket is provided with a round hole, so that the extrusion gasket can be rotated, and the assembly and disassembly are convenient; the transducer comprises piezoelectric ceramics and electrode plates, wherein the piezoelectric ceramics and the electrode plates are arranged in a staggered mode and fixed on the amplitude transformer through connecting bolts.
A longitudinal-torsional composite ultrasonic auxiliary extrusion device comprises an energy converter, an amplitude transformer, an extrusion shaft and an extrusion die, wherein the energy converter and the amplitude transformer are fixedly connected together, strip-shaped spiral grooves are uniformly distributed at intervals along the circumference of the small end of the amplitude transformer, and the end part of the small end of the amplitude transformer is connected with an extrusion gasket through a stud; the amplitude transformer is fixed in the hollow extrusion shaft, one end of the extrusion container is provided with the extrusion die, and the extrusion gasket can extend into the other end of the extrusion container; the extrusion shaft extrudes the heated blank into the extrusion barrel, then the product is extruded through the extrusion die, the ultrasonic generator is connected with the transducer to generate longitudinal-torsional composite vibration, ultrasonic assistance is realized, and the plasticity of metal is increased.
The invention has the beneficial effects that:
1. the invention introduces ultrasonic wave into conventional extrusion, utilizes the ultrasonic standing wave characteristic to increase metal plasticity, reduce deformation resistance, reduce friction coefficient between blank and die wall, and increase lubricating effect, thereby fully exerting equipment potential, improving part quality and die life, simplifying surface treatment, improving labor condition, and reducing cost.
2. Compared with the conventional extrusion, the ultrasonic vibration extrusion process is stable, the acting force is small, the stress of the workpiece is uniform, the metal fluidity is good, the surface quality of the workpiece is greatly improved, and meanwhile, the relatively good surface quality and the relatively high dimensional precision of the molded workpiece are obtained.
3. The outer sleeve and the lining of the extrusion container are connected in an interference fit manner, so that the lining is convenient to replace when the extrusion container is worn, and the extrusion container and the extrusion die are connected in a plane fit manner, so that the unit pressure borne by the die and the end surface of the lining is small and the lining is not easy to deform.
4. The cylindrical surface of the extrusion gasket is provided with the round hole, so that the extrusion gasket is favorable for rotating, the extrusion gasket is convenient to assemble and disassemble, and the use efficiency is improved.
5. The invention has reasonable design, increases the metal plasticity, reduces the friction force between the blank and the die, improves the product quality, prolongs the service life of the die and has good economic benefit.
Description of the drawings:
FIG. 1 is an overall three-dimensional schematic of the present invention;
FIG. 2 is an exploded view of the container of the present invention;
FIG. 3 is an exploded view of the extrusion shaft of the present invention;
FIG. 4 is an exploded view of the extrusion die of the present invention;
FIG. 5 is a view of the construction of the extrusion shaft of the present invention;
FIG. 6 is an exploded view of the upper die and lower die of the present invention;
FIG. 7 is a schematic view of a connection pad of the present invention;
FIG. 8 is a front view of the upper die of the present invention;
FIG. 9 is a top view of the upper die of the present invention;
fig. 10 is a plan view of the lower die of the present invention.
The specific implementation mode is as follows:
example (b): referring to fig. 1-10, wherein, 1-extrusion shaft, 2-transducer, 3-amplitude transformer, 4-pin, 5-stud, 6-extrusion gasket, 7-inner liner, 8-outer liner, 9-rear ring, 10-front ring, 11-die pad, 12-connecting bolt, 13-locating pin, 14-shunt hole, 15-die core, 16-welding chamber, 17-die sleeve, 18-die frame, 19-bolt, 20-spiral groove, 21-upper die, 22-lower die, 23-extrusion cylinder, 24-extrusion die.
The invention comprises an extrusion shaft 1, a transducer 2, a variable amplitude rod 3, an extrusion gasket 6, an extrusion cylinder 23, an extrusion die 24, a pin 4, a connecting bolt 12 and a stud 5. The ultrasonic auxiliary system comprises an ultrasonic generator, an extrusion shaft, a bolt, an ultrasonic auxiliary system, an ultrasonic device, a spiral groove, an ultrasonic generator, an extrusion shaft, a bolt, a screw rod, a screw. The round hole is formed in the cylindrical surface of the extrusion gasket, so that the extrusion gasket can be rotated, the extrusion gasket can be conveniently assembled and disassembled, and the use efficiency is improved. The threaded hole is axially formed, the threaded hole is also formed in the small end of the amplitude transformer, the extrusion gasket is connected with the amplitude transformer through the double-end stud, the extrusion gasket can be replaced conveniently, and therefore the surface quality of a workpiece is improved. The container 23 consists of an inner liner 7 and an outer liner 8, the outer liner and the inner liner are connected in an interference fit manner, and when the container is worn, the replacement of the inner liner is facilitated. The extrusion container is connected with the extrusion die in a plane matching mode, so that the unit pressure borne by the die and the end face of the lining is relatively small, and the lining is not easy to deform.
Firstly, referring to fig. 1 and 2, the ultrasonic auxiliary mechanism is completed, the transducer 2 is connected to the upper end of the amplitude transformer through a bolt, and the amplitude transformer 3 is provided with a spiral groove, so that longitudinal-torsional composite vibration can be realized, and the friction of an extrusion gasket can be reduced. The ultrasonic device is arranged in the extrusion shaft, and the flange plate at the upper end of the amplitude transformer is fixed on the extrusion shaft through four pins. The amplitude transformer 3 is connected with the extrusion gasket 6 through a double-end stud 5. The vibration of the amplitude transformer is transmitted to the stud, the screw is transmitted to the extrusion gasket again, the ultrasonic auxiliary effect is realized, the extrusion gasket extrudes a blank, the blank flows into a welding chamber on the surface of the lower die 22 through a shunting hole on the surface of an upper die 21 of the plane shunting combined die 24, the welding chamber 16 collects metal flowing out from the shunting hole 14 together for welding again, and the extrusion force is continuously increased until the extrusion die hole due to continuous collection of the metal, so that the ultrasonic auxiliary extrusion is realized.
The extrusion die comprises a die frame 18, a rear ring 9, a front ring 10, a die sleeve 17, a die cushion 11, an upper die 21, a lower die 22, a positioning pin 13 and a connecting bolt 12, wherein the positioning pin 13 is used for positioning the upper die and the lower die, and the connecting bolt 12 is used for firmly connecting the upper die and the lower die together, so that the plane shunting combined die forms a whole, is convenient to operate and can increase the strength. The upper die 21 and the lower die 22 are fixed and connected with the die cushion 11, then are installed in the die sleeve 17, and finally the die sleeve 17, the rear ring 9 and the front ring 10 are installed in the die frame 18.
The upper die is provided with a shunting hole 14, a shunting bridge and a die core 15, and the lower die is provided with a welding chamber 16 and a die hole cavity. The welding chamber collects the metal flowing out from the shunting holes together and welds the metal together again to form an integral blank taking the die core as the center, and the static pressure is increased continuously due to the continuous collection of the metal until the metal is extruded out of the die hole.
The positioning pin is used for positioning the upper die and the lower die, and the upper die and the lower die are firmly connected together by the connecting bolt, so that the plane shunting combined die forms a whole, is convenient to operate and can increase the strength.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A longitudinal-torsional composite ultrasonic auxiliary extrusion method comprises the following steps:
a. fixedly connecting the transducer with an amplitude transformer, wherein strip-shaped spiral grooves are uniformly distributed at intervals along the circumference at the small end of the amplitude transformer, and the small end of the amplitude transformer is connected with an extrusion gasket through a stud;
b. arranging a hollow extrusion shaft, fixing the amplitude transformer in the inner cavity of the extrusion shaft, arranging an extrusion container, arranging an extrusion die at one end of the extrusion container, and enabling an extrusion gasket to extend into the other end of the extrusion container;
c. the extrusion shaft extrudes the heated blank into the extrusion cylinder, then the product is extruded through the extrusion die, the ultrasonic generator is connected with the transducer to generate longitudinal-torsional composite vibration, the vibration of the amplitude transformer is transmitted to the stud, and the stud is transmitted to the extrusion gasket, so that the effect of ultrasonic assistance is realized, the plasticity of metal is increased, the deformation resistance is reduced, the metal flowability is good, the stress of a workpiece is uniform, the friction between the blank and the die wall is reduced, the service life of the die is prolonged, and the better surface quality and the dimensional accuracy of a formed workpiece are obtained.
2. The method for the longitudinally-twisted composite ultrasonic-assisted extrusion as claimed in claim 1, wherein: the extrusion die comprises a die frame, a rear ring, a front ring, a die sleeve, a die pad, an upper die, a lower die, a positioning pin and a connecting bolt, wherein the upper die is provided with a shunting hole, a shunting bridge and a die core, and the lower die is provided with a welding chamber and a die hole cavity; the extrusion gasket extrudes a blank, the blank flows into the welding chamber of the lower die through the shunting hole of the upper die, the welding chamber collects metal flowing out from the shunting hole together for welding again, and the extrusion force is continuously increased until the die hole is extruded due to continuous collection of the metal, so that ultrasonic-assisted extrusion is realized.
3. The method for the torque compound ultrasonic assisted extrusion as set forth in claim 2, wherein: the extrusion cylinder consists of an inner liner and an outer sleeve which are connected by interference fit and are combined together by hot fitting; the extrusion cylinder is connected with the extrusion die in a plane matching mode, the die core is fixed at the center of the upper die through a bolt, and the circumferential surface of the die core is provided with threads.
4. The method for the longitudinally-twisted composite ultrasonic-assisted extrusion as claimed in claim 1, wherein: the extrusion shaft is a stepped hollow shaft, the large end of the amplitude transformer is provided with a connecting flange, the connecting flange is fixed on the stepped end face of the extrusion shaft through a pin, and the small end of the amplitude transformer and the end part of the extrusion shaft are on a vertical plane.
5. The method for the longitudinally-twisted composite ultrasonic-assisted extrusion as claimed in claim 1, wherein: the cylindrical surface of the extrusion gasket is provided with a round hole, so that the extrusion gasket can be rotated, and the assembly and disassembly are convenient; the transducer comprises piezoelectric ceramics and electrode plates, wherein the piezoelectric ceramics and the electrode plates are arranged in a staggered mode and fixed on the amplitude transformer through connecting bolts.
6. The utility model provides a compound supersound of longitudinal-torsional assists extrusion device, includes transducer, amplitude transformer, extrusion shaft and extrusion die, characterized by: the energy converter is fixedly connected with the amplitude transformer, strip-shaped spiral grooves are uniformly distributed at intervals along the circumference of the small end of the amplitude transformer, and the end part of the small end of the amplitude transformer is connected with the extrusion gasket through a stud; the amplitude transformer is fixed in the hollow extrusion shaft, one end of the extrusion container is provided with the extrusion die, and the extrusion gasket can extend into the other end of the extrusion container; the extrusion shaft extrudes the heated blank into the extrusion barrel, then the product is extruded through the extrusion die, the ultrasonic generator is connected with the transducer to generate longitudinal-torsional composite vibration, ultrasonic assistance is realized, and the plasticity of metal is increased.
7. The torque compound ultrasonic auxiliary extrusion device as recited in claim 6, wherein: the extrusion die comprises an upper die, a lower die, a positioning pin and a connecting bolt, wherein the upper die is provided with a shunting hole, a shunting bridge and a die core, and the lower die is provided with a welding chamber and a die hole cavity; the extrusion gasket extrudes a blank, the blank flows into the welding chamber of the lower die through the shunting holes of the upper die, the welding chamber collects metal flowing out from the shunting holes together for welding again, and the extrusion force is continuously increased until the extrusion die holes are extruded due to continuous collection of the metal, so that a product is formed.
8. The method for the torque compound ultrasonic assisted extrusion as set forth in claim 7, wherein: the extrusion cylinder consists of an inner liner and an outer sleeve which are connected in an interference fit manner and are combined together by utilizing a hot fitting; the extrusion cylinder is connected with the extrusion die in a plane matching mode, the die core is fixed at the center of the upper die through a bolt, and the circumferential surface of the die core is provided with threads.
9. The torque compound ultrasonic auxiliary extrusion device as recited in claim 6, wherein: the extrusion shaft is a stepped hollow shaft, a connecting flange is arranged at the large end of the amplitude transformer and is fixed on the stepped end face of the extrusion shaft through a pin, and the small end of the amplitude transformer and the end part of the extrusion shaft are on a vertical plane.
10. The torque compound ultrasonic auxiliary extrusion device as recited in claim 6, wherein: the cylindrical surface of the extrusion gasket is provided with a round hole, so that the extrusion gasket can be rotated, and the assembly and disassembly are convenient; the transducer comprises piezoelectric ceramics and electrode plates, wherein the piezoelectric ceramics and the electrode plates are arranged in a staggered mode and fixed on the amplitude transformer through connecting bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233772.9A CN110842043A (en) | 2019-12-05 | 2019-12-05 | Longitudinal-torsional composite ultrasonic auxiliary extrusion method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911233772.9A CN110842043A (en) | 2019-12-05 | 2019-12-05 | Longitudinal-torsional composite ultrasonic auxiliary extrusion method and device |
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| CN110842043A true CN110842043A (en) | 2020-02-28 |
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| CN201911233772.9A Pending CN110842043A (en) | 2019-12-05 | 2019-12-05 | Longitudinal-torsional composite ultrasonic auxiliary extrusion method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114522995A (en) * | 2022-02-17 | 2022-05-24 | 山东铂克新材料有限公司 | Ultrasonic auxiliary extrusion device |
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