阅读说明：本技术 一种用于金属加工的挤压工具 (Extrusion tool for metal processing ) 是由 赵云杰 于 2020-04-30 设计创作，主要内容包括：本发明提供的一种用于金属加工的挤压工具,包括膨胀环和活动撑块；所述膨胀环的一端可移动套设于所述活动撑块；所述膨胀环靠近所述活动撑块的一端设有锥状内孔；所述锥状内孔的大端朝向所述活动撑块设置；所述活动撑块设有与所述锥状内孔适配的圆台端；所述圆台端的锥度大于所述锥状内孔的锥度。当在挤压金属材料时,由于活动撑块在压力作用下向膨胀环的锥状内孔内移动,因此活动撑块会将所述膨胀环的直径撑大,使得膨胀环在挤压金属材料过程中,膨胀环能够与料胆紧密配合,从而避免在挤压过程中出现漏料的情况。在挤压完成后,活动撑块对膨胀环的压力减少,膨胀环与料胆形成松配合,便于膨胀环随挤压杆一同退出料胆,从而提高生产加工效率。(The invention provides an extrusion tool for metal processing, which comprises an expansion ring and a movable support block; one end of the expansion ring is movably sleeved on the movable supporting block; one end of the expansion ring close to the movable supporting block is provided with a tapered inner hole; the large end of the conical inner hole is arranged towards the movable supporting block; the movable supporting block is provided with a circular truncated cone end matched with the conical inner hole; the taper of the circular truncated cone end is larger than that of the conical inner hole. When extruding metal material, because the activity kickstand removes in the toper hole of expansion ring under the pressure effect, consequently the activity kickstand can with the diameter of expansion ring props greatly for the expansion ring is at the extrusion metal material in-process, and the expansion ring can closely cooperate with the material courage, thereby avoids appearing leaking the condition of expecting in the extrusion process. After extrusion is completed, the pressure of the movable supporting block on the expansion ring is reduced, the expansion ring and the material container form loose fit, the expansion ring can conveniently retreat from the material container along with the extrusion rod, and therefore the production and processing efficiency is improved.)

1. An extrusion tool for metal working, comprising an expansion ring and a movable brace;

one end of the expansion ring is movably sleeved on the movable supporting block;

one end of the expansion ring close to the movable supporting block is provided with a tapered inner hole;

the large end of the conical inner hole is arranged towards the movable supporting block;

the movable supporting block is provided with a circular truncated cone end matched with the conical inner hole;

the taper of the circular truncated cone end is larger than that of the conical inner hole.

2. The extrusion tool for metal working as in claim 1, further comprising a lock nut;

the small end of the conical inner hole is provided with a stepped hole which is coaxial with the conical inner hole;

one end of the movable supporting block, which is far away from the circular table end, is provided with an external thread matched with the locking nut;

one end of the movable supporting block, which is far away from the circular table end, penetrates through the stepped hole and is in threaded connection with the locking nut.

3. The pressing tool for metal working according to claim 2, further comprising a fixing member and a screw;

one end of the movable supporting block, which is far away from the circular table end, is provided with a first threaded hole matched with the screw;

a groove is formed in one surface, far away from the movable supporting block, of the locking nut;

a key groove is formed in one end, far away from the circular table end, of the movable supporting block;

the fixing piece is provided with a convex edge matched with the groove and the key groove;

the fixing piece is provided with a counter bore coaxial with the threaded hole;

and the threaded end of the screw penetrates through the countersunk hole to be in threaded connection with the first threaded hole.

4. The extrusion tool for metal working as claimed in claim 1, wherein an outer surface of the expansion ring near an end of the tapered bore is tapered;

the conical surface comprises a first conical surface and a second conical surface;

the small end of the first conical surface is connected with the large end of the second conical surface;

the taper of the first conical surface is smaller than that of the second conical surface.

5. The extrusion tool for metal working as claimed in claim 1, wherein a relief groove is provided on an outer surface of the expansion ring near a small end of the tapered inner bore;

the cross section of the unloading groove is arc-shaped.

6. The extrusion tool for metal working as in claim 1, further comprising a set of vent holes;

the exhaust hole group comprises a first exhaust hole and a second exhaust hole;

the first exhaust hole is communicated with the second exhaust hole and is arranged vertically to the second exhaust hole;

one end of the first exhaust hole, which is far away from the second exhaust hole, is arranged at the bottom of the conical inner hole;

one end of the second exhaust hole, which is far away from the first exhaust hole, is arranged on the side wall of the expansion ring.

7. The extrusion tool for metal working as claimed in claim 6, wherein the vent hole group comprises a plurality;

the plurality of exhaust hole groups are arranged around the virtual axis of the conical inner hole at equal intervals.

8. The extrusion tool for metal working as in claim 1, further comprising a plurality of round holes;

the circular holes are arranged around the virtual axis of the expansion ring at equal angles;

an internal threaded hole is formed in one end, far away from the conical inner hole, of the expansion ring;

one end of the pushing rod is fixed with the internal thread hole in a threaded connection mode.

9. The extrusion tool for metal working as recited in claim 1, wherein an end of the expansion ring remote from the tapered bore is provided with a snap groove;

a second threaded hole is formed in the clamping groove;

one end of the pushing rod is clamped with the clamping groove and is fixed with the second threaded hole in a threaded connection mode through a screw.

10. The extrusion tool for metal working as claimed in claim 9, wherein the clamping groove comprises a plurality;

the clamping grooves are arranged around the virtual axis of the expansion ring at equal angles.

Technical Field

The invention relates to the technical field of metallurgical processing equipment, in particular to an extrusion tool for metal processing.

Background

Hot extrusion is extrusion by heating a metal material to a hot forging temperature, that is, extrusion by heating a billet to a temperature above the recrystallization temperature of the metal before extrusion. Extrusion is a plastic working method for obtaining the required cross-sectional shape and size by applying external force to the metal blank placed in a container (extrusion cylinder) and making it flow out from a specific die hole, and is mainly used for producing the bars, pipes and profiled bars of stainless steel, nickel-base high-temperature alloy and refractory alloy.

The extrusion tool mainly comprises a movable type and a fixed type. The movable extrusion tool is characterized in that the extrusion rod and the push pad are connected in a separated mode, after extrusion is completed, the extrusion rod is withdrawn, the push pad cannot be withdrawn, and the material container can only move in the opposite direction to withdraw the push pad from the discharge port end. This kind of connected mode needs frequently to carry and pushes away the pad, causes processing production efficiency to hang down, and at the in-process that carries and push away the pad, the inevitable colliding with and wearing and tearing cause moreover for push away pad life hangs down. Fixed extrusion tool adopts fixed mode to connect for extrusion pole and push pad, though this kind of connected mode's push pad can be along with pushing away the pole and together withdraw from the material courage and make production efficiency high for movable extrusion tool, nevertheless owing to need extract the push pad backward, consequently push pad size need be less than the internal diameter of inner bag, and the aluminum alloy can ooze from the gap of push pad with the material courage when high pressure, glues in the material courage and on the push pad. Particularly, when a 7-series aluminum alloy is extruded, the 7-series aluminum alloy has higher strength, poor fluidity, stronger viscosity and more serious aluminum leakage than a 6-series aluminum alloy.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the extrusion tool for metal processing provided by the invention has high working efficiency and good sealing property.

In order to solve the technical problems, the invention adopts the technical scheme that:

an extrusion tool for metal working, comprising an expansion ring and a movable brace;

one end of the expansion ring is movably sleeved on the movable supporting block;

one end of the expansion ring close to the movable supporting block is provided with a tapered inner hole;

the large end of the conical inner hole is arranged towards the movable supporting block;

the movable supporting block is provided with a circular truncated cone end matched with the conical inner hole;

the taper of the circular truncated cone end is larger than that of the conical inner hole.

The invention has the beneficial effects that: the invention provides an extrusion tool for metal processing, which comprises an expansion ring and a movable support block; one end of the expansion ring close to the movable supporting block is provided with a tapered inner hole; the movable supporting block is provided with a circular truncated cone end matched with the conical inner hole; the taper of the circular truncated cone end is larger than that of the conical inner hole. When extruding metal material, because the activity bracer removes in the taper hole of expansion ring under the pressure effect, because the tapering of round platform end is greater than the tapering of taper hole, consequently the activity bracer can with the diameter of expansion ring props greatly for the expansion ring is at the extrusion metal material in-process, and the expansion ring can closely cooperate with the material courage, thereby avoids appearing leaking the condition of expecting in the extrusion process, reaches the effect of good leakproofness. After extrusion is completed, the extrusion rod is withdrawn from the material container, the pressure of the movable support block on the expansion ring is reduced, the expansion ring and the material container form loose fit, and the expansion ring is convenient to withdraw from the material container along with the extrusion rod, so that the production and processing efficiency is improved.

Drawings

FIG. 1 is a front elevational view of a press tool for metal working in accordance with the present invention;

FIG. 2 is a cross-sectional view of an assembled press tool for metal working according to the present invention;

FIG. 3 is a schematic view of an expansion ring for a metal working press tool according to the present invention;

FIG. 4 is a front view of an expansion ring for a metal working press tool of the present invention;

FIG. 5 is an exploded view of a part of a press tool for metal working according to the present invention;

description of reference numerals:

1. an expansion ring; 2. a movable support block; 3. a tapered inner bore; 4. a truncated cone end; 5. locking the nut; 6. a fixing member; 7. a screw; 8. a groove; 9. a rib; 10. a first conical surface; 11. a second tapered surface; 12. an unloading slot; 13. a first exhaust port; 14. a second vent hole; 15. a circular hole; 16. a clamping groove.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 5, an extrusion tool for metal working includes an expansion ring and a movable brace;

one end of the expansion ring is movably sleeved on the movable supporting block;

one end of the expansion ring close to the movable supporting block is provided with a tapered inner hole;

the large end of the conical inner hole is arranged towards the movable supporting block;

the movable supporting block is provided with a circular truncated cone end matched with the conical inner hole;

the taper of the circular truncated cone end is larger than that of the conical inner hole.

From the above description, the beneficial effects of the present invention are: the invention provides an extrusion tool for metal processing, which comprises an expansion ring and a movable support block; one end of the expansion ring close to the movable supporting block is provided with a tapered inner hole; the movable supporting block is provided with a circular truncated cone end matched with the conical inner hole; the taper of the circular truncated cone end is larger than that of the conical inner hole. When extruding metal material, because the activity bracer removes in the taper hole of expansion ring under the pressure effect, because the tapering of round platform end is greater than the tapering of taper hole, consequently the activity bracer can with the diameter of expansion ring props greatly for the expansion ring is at the extrusion metal material in-process, and the expansion ring can closely cooperate with the material courage, thereby avoids appearing leaking the condition of expecting in the extrusion process, reaches the effect of good leakproofness. After extrusion is completed, the extrusion rod is withdrawn from the material container, the pressure of the movable support block on the expansion ring is reduced, the expansion ring and the material container form loose fit, and the expansion ring is convenient to withdraw from the material container along with the extrusion rod, so that the production and processing efficiency is improved.

Furthermore, the device also comprises a locking nut;

the small end of the conical inner hole is provided with a stepped hole which is coaxial with the conical inner hole;

one end of the movable supporting block, which is far away from the circular table end, is provided with an external thread matched with the locking nut;

one end of the movable supporting block, which is far away from the circular table end, penetrates through the stepped hole and is in threaded connection with the locking nut.

As can be seen from the above description, the locking nut lock is used for providing axial positioning for the movable supporting block and preventing the movable supporting block from being separated from the expansion ring in the process of withdrawing the expansion ring from the material container.

Further, the device also comprises a fixing piece and a screw;

one end of the movable supporting block, which is far away from the circular table end, is provided with a first threaded hole matched with the screw;

a groove is formed in one surface, far away from the movable supporting block, of the locking nut;

a key groove is formed in one end, far away from the circular table end, of the movable supporting block;

the fixing piece is provided with a convex edge matched with the groove and the key groove;

the fixing piece is provided with a counter bore coaxial with the threaded hole;

and the threaded end of the screw penetrates through the countersunk hole to be in threaded connection with the first threaded hole.

From the above description, the fixing member is provided to prevent the locknut from being loosened from the movable stay, thereby improving the reliability of the product.

Furthermore, the outer surface of one end of the expansion ring close to the tapered inner hole is a tapered surface;

the conical surface comprises a first conical surface and a second conical surface;

the small end of the first conical surface is connected with the large end of the second conical surface;

the taper of the first conical surface is smaller than that of the second conical surface.

As can be seen from the above description, the arrangement of the first conical surface and the second conical surface can effectively ensure the reliability of the sealing contact between the expansion ring and the material container.

Furthermore, an unloading groove is formed in the outer surface, close to the small end of the tapered inner hole, of the expansion ring;

the cross section of the unloading groove is arc-shaped.

As can be seen from the above description, the expansion ring is extruded and deformed during the pushing process of the pushing rod, so that the sealing effect is achieved, and the internal stress generated by the extrusion and deformation can be well released by the arrangement of the unloading groove, so as to avoid stress concentration.

Further, the device also comprises an exhaust hole group;

the exhaust hole group comprises a first exhaust hole and a second exhaust hole;

the first exhaust hole is communicated with the second exhaust hole and is arranged vertically to the second exhaust hole;

one end of the first exhaust hole, which is far away from the second exhaust hole, is arranged at the bottom of the conical inner hole;

one end of the second exhaust hole, which is far away from the first exhaust hole, is arranged on the side wall of the expansion ring.

According to the description, as the working temperature of the hot extrusion processing is high, more hot gas can be generated, the arrangement of the exhaust hole group can better discharge the gas between the expansion ring and the movable supporting block, and the gas is prevented from being trapped in the conical inner hole, so that the balance of stress between the movable supporting block and the expansion ring is influenced.

Further, the exhaust hole group comprises a plurality of exhaust holes;

the plurality of exhaust hole groups are arranged around the virtual axis of the conical inner hole at equal intervals.

As apparent from the above description, the provision of a plurality of exhaust hole groups can improve exhaust efficiency.

Furthermore, the device also comprises a plurality of round holes;

the circular holes are arranged around the virtual axis of the expansion ring at equal angles;

an internal threaded hole is formed in one end, far away from the conical inner hole, of the expansion ring;

one end of the pushing rod is fixed with the internal thread hole in a threaded connection mode.

As can be seen from the above description, the arrangement of the circular holes can increase the rigidity and the strength of the whole expansion ring, and simultaneously, the purpose of reducing the tool weight is achieved. Secondly, when the pushing rod is assembled and disassembled with the expansion ring in a threaded manner, a tool can be inserted into the round hole so as to drive the expansion ring to rotate.

Furthermore, a clamping groove is formed in one end, far away from the conical inner hole, of the expansion ring;

a second threaded hole is formed in the clamping groove;

one end of the pushing rod is fixed with the clamping groove in a screwed mode through a screw and the second threaded hole after being clamped.

According to the above description, the clamping groove can realize circumferential fixation of the pushing rod and the expansion ring, and the connection of the screw can realize axial fixation of the pushing rod and the expansion ring.

Further, the card slot comprises a plurality of card slots;

the clamping grooves are arranged around the virtual axis of the expansion ring at equal angles.

As can be seen from the above description, the provision of the plurality of catching grooves ensures the strength of the connection between the push rod and the expansion ring, and ensures the reliability of the connection.

The extrusion tool described above can be applied to any hot extrusion metal processing scenario, such as processing of metals such as carbon steel, non-ferrous metals, alloys, etc., and is described below based on its application in processing of 7-series aluminum alloys:

referring to fig. 1 to 5, a first embodiment of the present invention is: an extrusion tool for metal processing comprises an expansion ring 1 and a movable supporting block 2;

one end of the expansion ring 1 is movably sleeved on the movable supporting block 2;

one end of the expansion ring 1 close to the movable supporting block 2 is provided with a conical inner hole 3;

the large end of the conical inner hole 3 is arranged towards the movable supporting block 2;

the movable supporting block 2 is provided with a circular truncated cone end 4 matched with the conical inner hole 3;

the taper of the circular truncated cone end 4 is larger than that of the conical inner hole 3.

Specifically, when the taper of the circular table end 4 and the taper of the tapered inner hole 3 need to be tested for many times to enable the expansion ring 1 to be in a completely expanded state, the requirement on sealing performance is met, and the material container cannot be abraded due to overlarge support.

Specifically, the included angle between two generatrices of the circular table end 4 is 55 degrees, and the included angle between two generatrices of the conical inner hole 3 is 54 degrees.

Referring to fig. 2 and 5, in particular, the locking device further includes a lock nut 5;

the small end of the conical inner hole 3 is provided with a stepped hole which is coaxial with the conical inner hole 3;

an external thread matched with the locking nut 5 is arranged at one end, far away from the circular table end 4, of the movable supporting block 2;

one end of the movable supporting block 2, which is far away from the circular table end 4, penetrates through the stepped hole to be in threaded connection with the locking nut 5.

Referring to fig. 2 and 5, in particular, the device further includes a fixing member 6 and a screw 7;

one end of the movable supporting block 2, which is far away from the circular table end 4, is provided with a first threaded hole matched with the screw 7;

a groove 8 is formed in one surface, far away from the movable supporting block 2, of the locking nut 5;

a key groove is formed in one end, far away from the circular table end 4, of the movable supporting block 2;

the fixing piece 6 is provided with a convex edge 9 matched with the groove 8 and the key groove;

the fixing piece 6 is provided with a counter bore coaxial with the threaded hole;

the threaded end of the screw 7 passes through the countersunk hole and is in threaded connection with the first threaded hole.

Wherein, with lock nut 5 screw in activity spacer 2, until recess 8 on the lock nut 5 aligns with the keyway on the activity spacer, go into recess 8 and keyway with the bead 9 card on the mounting 6, the screw thread end of screw 7 passes the counter sink with first screw hole spiro union is in order to realize fixing mounting 6, lock nut 5 and activity spacer 2.

Referring to fig. 3 to 5, in particular, the device further includes a plurality of circular holes 15;

the circular holes 15 are arranged around the virtual axis of the expansion ring 1 at equal angles;

an internal threaded hole is formed in one end, far away from the conical inner hole 3, of the expansion ring 1;

one end of the pushing rod is fixed with the internal thread hole in a threaded connection mode.

The axial positioning of the pushing rod and the expansion ring is realized through the matching of the shaft shoulder and the stepped hole.

Preferably, the number of the plurality of circular holes 15 is 8.

Referring to fig. 3 to 5, specifically, a clamping groove 16 is formed at one end of the expansion ring 1 away from the tapered inner hole 3;

a second threaded hole is formed in the clamping groove 16;

one end of the pushing rod is fastened with the clamping groove 16 and then fixed with the second threaded hole through a screw in a threaded manner.

Referring to fig. 3 to 5, specifically, the card slot 16 includes a plurality of card slots;

the plurality of clamping grooves 16 are arranged at equal angles around the virtual axis of the expansion ring 1.

Referring to fig. 1 to 5, a second embodiment of the present invention is: in this embodiment, on the basis of the first embodiment, the outer surface of the expansion ring 1 near one end of the tapered inner hole 3 is a conical surface;

the conical surfaces comprise a first conical surface 10 and a second conical surface 11;

the small end of the first conical surface 10 is connected with the large end of the second conical surface 11;

the taper of the first taper surface 10 is smaller than that of the second taper surface 11.

Referring to fig. 3 to 5, specifically, an unloading groove 12 is formed on an outer surface of the expansion ring 1, which is close to the small end of the tapered inner hole 3;

the section of the unloading groove 12 is arc-shaped.

Referring to fig. 1 to 5, a third embodiment of the present invention is: the embodiment further comprises an exhaust hole group on the basis of the first embodiment or the second embodiment;

the exhaust hole group comprises a first exhaust hole 13 and a second exhaust hole 14;

the first exhaust hole 13 is communicated with the second exhaust hole 14 and is arranged vertically to each other;

one end of the first exhaust hole 13, which is far away from the second exhaust hole 14, is arranged at the bottom of the conical inner hole 3;

the end of the second exhaust hole 14 far away from the first exhaust hole 13 is arranged on the side wall of the expansion ring 1.

Referring to fig. 2, fig. 3 and fig. 5, in particular, the exhaust hole group includes a plurality of exhaust holes;

the plurality of exhaust hole groups are arranged around the virtual axis of the conical inner hole 3 at equal intervals.

In summary, the extrusion tool for metal processing provided by the invention comprises an expansion ring and a movable support block; one end of the expansion ring close to the movable supporting block is provided with a tapered inner hole; the movable supporting block is provided with a circular truncated cone end matched with the conical inner hole; the taper of the circular truncated cone end is larger than that of the conical inner hole. When extruding 7 series aluminum alloy materials, because the activity kickoff removes in the taper hole of expansion ring under the pressure effect, because the tapering of round platform end is greater than the tapering of taper hole, consequently the activity kickoff can with the diameter of expansion ring props greatly for the expansion ring is at extrusion 7 series aluminum alloy materials in-process, and the expansion ring can closely cooperate with the material courage, thereby avoids appearing leaking the condition of expecting in the extrusion process, reaches good leakproofness's effect. After extrusion is completed, the extrusion rod is withdrawn from the material container, the pressure of the movable support block on the expansion ring is reduced, the expansion ring and the material container form loose fit, and the expansion ring is convenient to withdraw from the material container along with the extrusion rod, so that the production and processing efficiency is improved. Furthermore, the unloading grooves are formed in the surface of the expansion ring, so that internal stress generated by extrusion deformation can be well released, and stress concentration is avoided. Secondly, the arrangement of the exhaust hole group on the expansion ring can better discharge the gas between the expansion ring and the movable supporting block, and the gas is prevented from being trapped in the conical inner hole, so that the stress balance between the movable supporting block and the expansion ring is influenced.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.