CN214442734U - Rotary swaging machining die - Google Patents

Abstract

The utility model provides a rotary swaging mold processing, include: the mould comprises a mould main body, a plurality of mould blocks and a plurality of mould clamping devices, wherein the mould main body is formed by sequentially assembling a plurality of mould blocks along the circumferential direction, and one end surface of each mould block is provided with an arc-shaped groove so that the plurality of arc-shaped grooves form a closed working mould hole at the central position of the mould main body; the insert layer covers the arc-shaped groove; the brazing layer is positioned between the insert layer and the arc-shaped groove and is used for connecting the die block and the insert layer; wherein, the material of the insert layer is tungsten carbide-cobalt hard alloy. The utility model provides a rotary swaging mold processing, toughness is good, and the wearability is strong, has improved the wearability of mould, resistance to deformation nature and life effectively, has avoided the frequent change of mould piece, reduction in production cost, resources are saved.

Description

Rotary swaging machining die

Technical Field

The utility model belongs to the technical field of metal deformation processing, in particular to rotary swaging mold processing.

Background

The rotary swaging deformation has the characteristics of pulse loading, multidirectional forging and the like, has the advantages of high striking frequency, uniform deformation and high precision, and is suitable for deformation processing of high-strength low-plasticity metal materials. Tungsten and molybdenum are typical representatives of refractory metals, wherein the production of small-size bars also relates to rotary swaging deformation processing.

At present, the rotary swaging deformation die of refractory metals is mainly made of stellite alloy, high-speed steel, hot-work die steel and the like, but tungsten, molybdenum and the alloy thereof have the defects of poor plasticity, high hardness, large high-temperature deformation resistance and the like, and the high-frequency pulse cyclic alternating load striking in the rotary swaging process easily causes the die to lose effectiveness in the modes of deformation, abrasion, fracture and the like, so that the service life is short. A large number of damaged moulds increase the production cost and cause resource waste; if the replacement is not performed in time, the bar material is forged to cause a defect, resulting in an increase in defective rate.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

In view of this, an object of the present invention is to provide a swaging processing mold.

In order to realize the above purpose, the technical scheme of the utility model provides a swaging machining die, include:

the mould comprises a mould main body, wherein the mould main body is formed by sequentially assembling a plurality of mould blocks along the circumferential direction, one end face of each mould block is provided with an arc-shaped groove, so that the plurality of arc-shaped grooves form a closed working mould hole at the central position of the mould main body, and the arc-shaped grooves penetrate through the end faces of the mould blocks on two sides in the axial direction of the working mould hole; the insert layer covers the arc-shaped groove; the brazing layer is positioned between the insert layer and the arc-shaped groove and is used for connecting the die block and the insert layer; wherein, the material of the insert layer is tungsten carbide-cobalt hard alloy.

Furthermore, conical structures with the inner diameter gradually increasing from inside to outside are arranged at two ends of the working die hole.

Furthermore, the inner taper angle of the conical structure ranges from 60 degrees to 120 degrees.

Furthermore, the brazing layer is made of copper-zinc alloy or red copper; the material of the die block is 40Cr alloy quenched and tempered steel.

Further, the number of the die blocks is 2, and the length of the working die hole along the axial direction is 0.5-1.5 times of the diameter of the bar.

Furthermore, the number of the die blocks is 4, and the length of the working die hole along the axial direction is 0.5-2 times of the diameter of the bar.

Further, the cross-sectional shape of the working die hole is oblate.

Further, the cross-sectional shape of the working die hole is a perfect circle.

Furthermore, the thickness of the mosaic block layer ranges from 0.1mm to 10 mm.

Furthermore, the thickness of the brazing layer ranges from 0.1mm to 2 mm.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is: traditional rotary swaging die for single material, the utility model discloses a compound, the advantage that alloy steel toughness is good and carbide wearability is strong has been assembled. The utility model discloses embedded tungsten carbide-cobalt carbide working tape, intensity is high and hardness can reach more than 60HRC, has improved the wearability of mould, resistance to deformation and life effectively. The utility model discloses a copper brazing mode will insert firm cladding in the mould piece, and it coheres intensity height, difficult fracture. The conventional die is prevented from breaking and flying out after failure, and the potential safety hazard of production is reduced.

Drawings

FIG. 1 shows a schematic view of a mold block, an insert layer and a braze layer according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a mold body of an embodiment of the present invention;

FIG. 3 shows a schematic view of the structure of the die block, insert layer and braze layer of an embodiment of the invention;

fig. 4 shows a schematic structural diagram of a mold body according to an embodiment of the present invention.

The symbols in the figures are as follows:

1 mould main part, 11 mould blocks, 111 arc-shaped grooves, 12 working mould holes, 13 conical structures, 2 insert layers and 3 brazing layers.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention and its advantages will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, an embodiment of the present invention provides a swaging die.

The swaging processing die comprises: the die comprises a die main body 1, an insert layer 2 and a brazing layer 3, wherein the die main body 1 is formed by sequentially assembling a plurality of die blocks 11 along the circumferential direction, an arc-shaped groove 111 is formed in one end face of each die block 11, so that the arc-shaped grooves 111 form a closed working die hole 12 in the center of the die main body 1, the arc-shaped grooves 111 penetrate through the end faces of the die blocks 11 on two sides in the axial direction of the working die hole 12, and the working die hole 12 is a through hole; specifically, the die blocks 11 are in contact with the hammer head plane, and in the non-operating state, the die blocks 11 are in an open state with a gap therebetween. In a working state, the hammer head extrudes the die blocks 11 to close the holes between the die blocks 11, the arc-shaped groove 111 on each die block 11 also forms a closed working die hole 12, the working die hole 12 continuously works on the bar material through high-frequency extrusion, the bar material is radially deformed, and finally the bar material is formed, wherein the working die hole 12 is a working belt of the rotary swaging processing die. The insert layer 2 completely covers the arc-shaped groove 111, so that the insert layer 2 completely covers the inner wall of the working die hole 12. The brazing layer 3 is positioned between the insert layer 2 and the arc-shaped groove 111 and is used for connecting the die block 11 and the insert layer 2, and the brazing layer 3 mainly plays a role in firmly connecting the die block 11 and the insert layer 2; the insert layer 2 is made of tungsten carbide-cobalt hard alloy, so that the insert layer 2 integrates the advantages of good toughness of alloy steel and strong wear resistance of the hard alloy, the strength is high, the hardness can reach more than 60HRC, the wear resistance, the deformation resistance and the service life of the die main body 1 are effectively improved, frequent replacement of the die block 11 is avoided, the production cost is reduced, resources are saved, and the occurrence frequency of defective rate is reduced.

Further, as shown in fig. 2 and 4, conical structures 13 having an inner diameter gradually increasing from the inside to the outside are provided at both ends of the work die hole 12 to ensure that the bar is smoothly inserted into the work die hole 12 by a guiding action of the tapered surfaces of the conical structures 13 when the bar is slightly deviated from the axis of the work die hole 12. Wherein, the inner taper angle of the conical structure 13 ranges from 60 degrees to 120 degrees.

In a specific embodiment, the internal taper angle of the conical structure 13 is 90 °.

Further, the brazing layer 3 is made of copper-zinc alloy or red copper, the insert layer 2 is firmly wrapped in the arc-shaped groove 111 of the die block 11 in a copper brazing mode, the bonding strength is high, cracking is not prone to occurring, breaking and flying out of a conventional die after failure are avoided, and potential safety hazards in production are reduced. The material of the die block 11 is 40Cr alloy quenched and tempered steel, so that the die block 11 has high strength and good plasticity and toughness.

In a specific embodiment, as shown in fig. 2, the number of the die blocks 11 is 2, the die body 1 is composed of two die blocks 11, the two die blocks 11 are used in cooperation, and the die blocks 11 are loaded and extruded by two hammer pulses to perform opening and closing periodic reciprocating motion, so that the bar is radially deformed. Wherein the cross section of the working die hole 12 is oblate in shape, so as to be used for rotary swaging production of semi-finished bars. The length of the working die hole 12 in the axial direction is 0.5-1.5 times of the diameter of the bar, so that the bar is properly deformed by the two die blocks 11 each time of working of the rotary forging machine under the rated power, and the quality of the finished bar is ensured. Specifically, the material of the insert block layer 2 is YG8 cemented carbide; the brazing layer 3 is made of copper-zinc alloy; the material of the die block 11 is 40Cr alloy quenched and tempered steel. In the present embodiment, in particular, the length of the working die hole 12 in the axial direction is 1.2 times the diameter of the rod,

in another specific embodiment, as shown in fig. 3 and 4, the number of the die blocks 11 is 4, the die body 1 composed of four die blocks 11 is used in cooperation with the four die blocks 11, and the die blocks 11 are loaded and extruded by four hammer pulses to perform opening and closing periodic reciprocating motion, so that the bar is radially deformed. Wherein the cross-sectional shape of the working die hole 12 is circular for the rotary swaging production of the finished bar. The length of the working die hole 12 in the axial direction is 0.5-2 times of the diameter of the bar, so that the bar is properly deformed by the four-piece die block 11 each time of working under the rated power of the rotary forging machine, and the quality of the finished bar is ensured. Specifically, the material of the insert block layer 2 is YG8 cemented carbide; the brazing layer 3 is made of red copper; the material of the die block 11 is 40Cr alloy quenched and tempered steel. In the present embodiment, in particular, the length of the working die hole 12 in the axial direction is 1.5 times the diameter of the rod,

further, the thickness of the insert block layer 2 ranges from 0.1mm to 10 mm. Specifically, the insert layer 2 can be made into different thicknesses according to actual requirements, such as 0.5mm, 0.7mm, 0.9mm, 1mm, 1.5mm, 2mm, 4mm, 6mm, 8mm, 9mm, 10mm, and the like.

Further, the thickness of the brazing layer 3 ranges from 0.1mm to 2 mm. The brazing layer 3 can be made in different thicknesses, for example 0.2mm, 0.3mm, 0.4mm, 0.5mm, 1mm, etc., depending on the thickness of the insert layer 2 and the actual requirements.

The utility model has the advantages as follows: traditional rotary swaging die for single material, the utility model discloses a compound, the advantage that alloy steel toughness is good and carbide wearability is strong has been assembled. The utility model discloses embedded tungsten carbide-cobalt carbide working tape, intensity is high and hardness can reach more than 60HRC, has improved the wearability of mould, resistance to deformation and life effectively. The utility model discloses a copper brazing mode will insert firm cladding in the mould piece, and it coheres intensity height, difficult fracture. The conventional die is prevented from breaking and flying out after failure, and the potential safety hazard of production is reduced.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A swaging processing die, comprising:

the mould comprises a mould main body, wherein the mould main body is formed by sequentially assembling a plurality of mould blocks along the circumferential direction, one end face of each mould block is provided with an arc-shaped groove, so that the arc-shaped grooves form a closed working mould hole at the central position of the mould main body, and the arc-shaped grooves penetrate through the end faces of the mould blocks on two sides in the axial direction of the working mould hole;

the insert layer covers the arc-shaped groove;

the brazing layer is positioned between the insert layer and the arc-shaped groove and is used for connecting the die block and the insert layer;

the material of the insert layer is tungsten carbide-cobalt hard alloy.

2. The swaging processing die of claim 1,

and conical structures with the inner diameters gradually increasing from inside to outside are arranged at the two ends of the working die hole.

3. The swaging processing die of claim 2,

the inner taper angle of the conical structure ranges from 60 degrees to 120 degrees.

4. The swaging processing die of claim 1,

the brazing layer is made of copper-zinc alloy or red copper;

the material of the die block is 40Cr alloy quenched and tempered steel.

5. The swaging processing die of claim 1,

the number of the die blocks is 2, and the length of the working die hole along the axial direction is 0.5-1.5 of the diameter of the bar.

6. The swaging processing die of claim 1,

the number of the die blocks is 4, and the length of the working die hole in the axial direction is 0.5-2 times of the diameter of the bar.

7. The swaging processing die of claim 1 or 5,

the cross section of the working die hole is oblate.

8. The swaging processing die of claim 1 or 6,

the cross section of the working die hole is in a perfect circle shape.

9. The swaging processing die of claim 1,

the thickness range of the mosaic block layer is 0.1 mm-10 mm.

10. The swaging processing die of claim 1,

the thickness of the brazing layer ranges from 0.1mm to 2 mm.

Images