CN216882133U - Tungsten steel mould with special-shaped deep hole mould cavity - Google Patents

Abstract

The application discloses tungsten steel mould with dysmorphism deep hole die cavity, last mold core and lower mold core that die sleeve and tungsten steel that make including high-speed steel, the die sleeve is step axle construction, the die sleeve is provided with the installation through-hole along its axis direction, go up mold core and lower mold core and imbed in proper order in the installation through-hole, the central processing of going up the mold core has first shaping hole, the central processing of lower mold core has the second shaping hole, the one end that the second shaping hole is close to last mold core is provided with the transition hole with the seamless butt joint of first shaping hole. This application is simple and practical, is the multistage hole with the deep hole segmentation, reduces the degree of depth of single processing, reduces electrode wear, the polishing processing of being convenient for.

Description

Tungsten steel mould with special-shaped deep hole mould cavity

Technical Field

The application relates to the technical field of cold heading dies, in particular to a tungsten steel die with a special-shaped deep hole die cavity.

Background

The cold heading die bears severe stamping load, and the surface of the female die bears high pressure stress. The die material is required to have high strength, toughness and wear resistance. For a cold heading die requiring long service life, in order to enable the die to bear higher impact load, an insert type die structure is generally adopted, wherein an insert of the high-hardness cold heading die cannot be machined by a drilling machine and other conventional machining devices, and a forming hole needs to be machined by electric sparks and other special machining devices; however, in the process of processing the special-shaped deep hole die cavity, the electrode loss is overlarge due to overlarge depth of the die cavity, so that the processing precision of the die cavity is influenced; in addition, the subsequent polishing process and the polishing tool are affected by the stroke and the like, and cannot reach the corresponding depth, so that the polishing is not thorough. Accordingly, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tungsten steel die with a special-shaped deep hole die cavity, which overcomes the defects in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the embodiment of the application discloses tungsten steel mould with dysmorphism deep hole die cavity, including the dismouting in welded platform's workstation, be fixed in a plurality of clamping device and a plurality of plug of workstation top surface in the protective sheath of seat skeleton, the protective sheath includes the shell and the soft closing cap of stereoplasm, shell and closing cap are the arc structure to built-in open slot that corresponds with the seat hinge, the closing cap is fixed in the open slot.

Further, in the tungsten steel die with the special-shaped deep hole die cavity, a nut is embedded in the top end of the sealing cover and is fixed to the shell through a bolt.

Further, in the tungsten steel mold with the special-shaped deep hole mold cavity, the nut is an arc-shaped nut, and the arc-shaped surface of the nut is flush with the arc-shaped surface of the sealing cover.

Furthermore, in the tungsten steel mold with the special-shaped deep hole mold cavity, a plurality of clamping parts are convexly extended on the inner wall of the opening groove close to the opening end of the opening groove.

Further, in the tungsten steel mould with special-shaped deep hole die cavity, the workbench comprises a frame and a plurality of connecting rods arranged in the frame, the frame and the connecting rods are square tubes, and the top surfaces of the connecting rods are provided with a plurality of positioning blocks arranged corresponding to the seat framework.

Further, in the tungsten steel die with the special-shaped deep hole die cavity, the clamping device is a quick clamp, and the tail end of the clamping device is provided with a rubber pad.

Further, in the tungsten steel mold with the special-shaped deep hole mold cavity, a positioning groove is formed in the side end of the top surface of the workbench.

Compared with the prior art, the utility model has the advantages that: this tungsten steel mould with dysmorphism deep hole die cavity is simple and practical, and the die core divide into mold core and lower mold core, divide into both ends with special-shaped deep hole die cavity, reduces the degree of depth of single electric spark cutting and polishing to the electrode that the protection processing was used reduces wearing and tearing, the polishing operation of being convenient for.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a tungsten steel die with a special-shaped deep-hole die cavity in an embodiment of the utility model.

Fig. 2 is a cross-sectional view of a tungsten steel mold having a shaped deep-hole cavity according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, a tungsten steel mold with a special-shaped deep hole mold cavity comprises a mold sleeve 1 made of high-speed steel and a mold core 2 made of tungsten steel, wherein the mold core 2 comprises an upper mold core 21 and a lower mold core 22 which are sequentially arranged, the mold sleeve 1 is of a stepped shaft structure, the mold sleeve 1 is provided with an installation through hole along the axis direction of the mold sleeve, the upper mold core 21 and the lower mold core 22 are sequentially embedded into the installation through hole, a first forming hole 211 is processed in the center of the upper mold core 21, a second forming hole 221 is processed in the center of the lower mold core 22, and a transition hole 222 which is in seamless butt joint with the first forming hole is formed in one end, close to the upper mold core 21, of the second forming hole.

In the technical scheme, a mold core is made of high-hardness tungsten steel, the hardness can reach Rockwell hardness HRA87-90, but the tungsten steel is poor in ductility and is easy to break after collision or impact, a mold sleeve is made of H13 high-speed steel (also called hot-work mold steel, the number of which is T23353, the brand number of which is 4Cr5MoSiV1), the mold core has excellent anti-cracking performance, the mold core is protected, meanwhile, a certain compression stress is applied to the mold core, the service life of the whole mold is prolonged, a first molding hole and a second molding hole are respectively processed at the centers of an upper mold core and a lower mold core, a transition hole is arranged at one end, close to the upper mold core, of the second molding hole, the transition hole comprises a straight hole section with the same diameter as that of the first molding hole and a taper hole section for connecting the straight hole section with the second molding hole in smooth connection, the first molding hole and the second molding hole are in smooth transition, wherein the second molding hole can also be used as an ejection hole and matched with an external ejection mechanism, ejecting the molded part out of the mold; this tungsten steel mould with dysmorphism deep hole die cavity is simple and practical, and the die core divide into mold core and lower mold core, divide into both ends with special-shaped deep hole die cavity, reduces the degree of depth of single electric spark cutting and polishing to the electrode that the protection processing was used reduces wearing and tearing, the polishing operation of being convenient for.

For example, referring to fig. 2, the mounting through hole is a taper hole, and the upper mold core 21 and the lower mold core 22 are circular truncated cone structures corresponding to the mounting through hole and fixed in the mounting hole by interference fit.

In the technical scheme, the taper of the mounting hole is 1 degree, the taper of the corresponding upper mold core and the taper of the corresponding lower mold core are also 1 degree, the corresponding diameters of the upper mold core and the lower mold core are larger than the diameter of the corresponding position of the mounting hole (the small diameter of the upper mold core is larger than the top diameter/small diameter of the mounting hole, and the large diameter of the lower mold core is larger than the bottom diameter/large diameter of the mounting hole).

Exemplarily, referring to fig. 1 and 2, a positioning prism 3 is disposed between the die sleeve 1 and the die core 2.

In the technical scheme, the positioning prism is parallel to the axial direction of the die sleeve and the die core and used for limiting the relative circumferential position of the die sleeve and the die core, so that the die core and the die sleeve can be quickly positioned and installed conveniently, and the assembling efficiency and the assembling precision are improved.

Illustratively, referring to fig. 1 and 2, the inner wall of the mounting through hole is provided with a first half groove, the outer wall of the mold core 2 is provided with a second half groove, and the first half groove and the second half groove form a positioning hole corresponding to the positioning prism 3.

In the technical scheme, the positioning prism is a regular quadrangular prism, the first half groove and the second half groove are embedded simultaneously, the positioning accuracy between the upper mold core and the lower mold core and the positioning accuracy between the mold core and the mold sleeve are ensured, during assembly, the positioning prism is simultaneously installed into the second half groove corresponding to the upper mold core and the lower mold core, the upper mold core and the lower mold core are circumferentially positioned, then the first half groove is aligned to the part of the positioning prism protruding out of the mold core, the mold core and the mold sleeve are pressed into a whole by utilizing a hydraulic machine, and the outer end faces of the upper mold core and the lower mold core are respectively flushed with two ends corresponding to the mold sleeve.

Illustratively, referring to fig. 1 and 2, the die sleeve 1 comprises a small-diameter section and a large-diameter section, so as to facilitate clamping and installation, and a positioning plane is machined on the circumferential surface of the large-diameter section.

In the technical scheme, the positioning plane is parallel to the plane of the first forming hole and/or the second forming hole, so that the die is convenient to mount and position and the punch is convenient to position in a matching way.

In conclusion, the tungsten steel mould with the special-shaped deep hole mould cavity is simple and practical, the mould core is divided into the upper mould core and the lower mould core, the special-shaped deep hole mould cavity is divided into two ends, the depth of single electric spark cutting and polishing is reduced, and therefore an electrode used for machining is protected, abrasion is reduced, and polishing operation is facilitated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims (6)

1. The tungsten steel die is characterized by comprising a die sleeve made of high-speed steel and a die core made of tungsten steel, wherein the die core comprises an upper die core and a lower die core which are sequentially arranged, the die sleeve is of a stepped shaft structure, the die sleeve is provided with an installation through hole along the axis direction of the die sleeve, the upper die core and the lower die core are sequentially embedded into the installation through hole, a first forming hole is machined in the center of the upper die core, a second forming hole is machined in the center of the lower die core, and a transition hole in seamless butt joint with the first forming hole is formed in one end, close to the upper die core, of the second forming hole.

2. The tungsten steel die with the special-shaped deep hole die cavity as claimed in claim 1, wherein: the mounting through hole is a taper hole, and the upper mold core and the lower mold core are of circular truncated cone structures corresponding to the mounting through hole.

3. The tungsten steel die with the special-shaped deep hole die cavity as claimed in claim 1, wherein: and a positioning prism is arranged between the die sleeve and the die core.

4. The tungsten steel die with the special-shaped deep hole die cavity as claimed in claim 3, wherein: the inner wall of the mounting through hole is provided with a first half groove, the outer wall of the mold core is provided with a second half groove, and the first half groove and the second half groove form positioning holes corresponding to the positioning prisms.

5. The tungsten steel die with the special-shaped deep hole die cavity as claimed in claim 1, wherein: the upper mold core and the lower mold core are fixedly connected with the mounting through holes of the mold sleeve in an interference fit manner.

6. The tungsten steel die with the special-shaped deep hole die cavity as claimed in claim 1, wherein: the die sleeve comprises a small-diameter section and a large-diameter section, and a positioning plane is machined on the circumferential surface of the large-diameter section.

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