CN219622659U - Milling head and die casting tool and milling tool thereof - Google Patents

Abstract

The utility model discloses a milling head, a die-casting tool and a milling tool thereof, which belong to the technical field of milling tools, wherein the milling head is of an integrated structure and comprises a milling base and a milling block, the milling block is die-cast and compositely formed on the milling base, the end face of one end of the milling base is provided with a first connecting hole, and the first connecting hole is configured to be detachably connected with a milling body of the milling tool. The milling head, the die-casting tool and the milling tool provided by the utility model reduce the probability of separating the milling head from the milling body and improve the reliability of the milling tool comprising the milling head.

Description

Milling head and die casting tool and milling tool thereof

Technical Field

The utility model relates to the technical field of milling tools, in particular to a milling head, a die casting tool thereof and a milling tool.

Background

The milling tool belongs to a well repairing tool and is mainly used for milling objects falling at the bottom of a well. The milling tool consists of a milling body and a milling head at the bottom of the milling body.

Currently, the milling body is usually made of 45# steel, the milling head is made of hard alloy segments, and the milling head and the milling body are usually connected together through a surface overlaying method. In one welding mode, a barrel-shaped body is reserved when the milling body is manufactured and used as an outer die of a milling head for overlaying hard alloy materials, and the barrel-shaped body is connected with the overlaying alloy after welding. In another welding mode, for example, chinese patent CN102151936B discloses a milling manufacturing method, specifically discloses that a milling body is manufactured from carbon steel or tungsten carbide; firstly, preheating a milling body by flame, then installing a welding tool to clamp the milling body, and adjusting the gap between a build-up welding contact layer on the inner side of the tool and the outer side of the top of the milling body to be the same; and (3) performing surfacing welding on the milling body by using an YD type hard alloy welding rod, loosening the inner clamp after welding is completed, and taking down the welding tool.

However, since the build-up welding operation is mainly performed manually, the build-up welding quality is not uniform, and the problem of falling off of the build-up welding layer may occur.

Disclosure of Invention

The utility model aims to provide a milling head, a die-casting tool and a milling tool thereof, which reduce the probability of separating the milling head from a milling body and improve the reliability of the milling tool comprising the milling head.

The technical scheme adopted by the utility model is as follows:

the milling head is of an integrated structure and comprises a milling base and a milling block, the milling block is die-cast and formed on the milling base in a composite mode, the end face of one end of the milling base is provided with a first connecting hole, and the first connecting hole is configured to be detachably connected with a milling body of a milling tool.

Optionally, the milling base has a through hole penetrating through two ends of the milling base, the milling block comprises a convex column and an abrasive structure arranged at one end of the convex column, the convex column penetrates through the through hole, the other end of the convex column extends to the end face of one end of the milling base, and the end face of the other end of the milling base is in contact with the abrasive structure.

Optionally, the pore wall of the through hole is provided with a plurality of arc grooves, a plurality of arc grooves are arranged around the axis of the milling base at intervals, the milling block further comprises a plurality of protruding blocks arranged on the side wall of the convex column, the protruding blocks are in one-to-one correspondence with the arc grooves, and the protruding blocks are arranged in the corresponding arc grooves.

Optionally, the abrasive structure includes a plurality of abrasive parts, and a plurality of abrasive parts are around the axis interval setting of milling piece, the abrasive part is kept away from the terminal surface of projection one end is the inclined plane.

Optionally, the end face of the milling base, on which the first connecting hole is provided, is further provided with a positioning structure, the first connecting hole and the positioning structure are respectively provided with a plurality of first connecting holes and a plurality of positioning structures, the first connecting holes and the positioning structures are sequentially and alternately arranged along the circumferential direction of the milling base, and the positioning structure is configured to position the milling body.

The milling head die-casting tool is used for manufacturing the milling head, and comprises a box body, a supporting frame and a profiling body, wherein the supporting frame is supported and limited in the box body, the profiling body is mounted on the supporting frame, and the profiling body is used for forming a milling block.

Optionally, a base preform is also included, the base preform being supported on the form and the base preform being used to form a milling base.

Optionally, the profiling body has a plurality of supporting grooves, the support frame includes a first supporting part and a plurality of second supporting parts that connect respectively in the first supporting part, a plurality of second supporting parts with a plurality of supporting grooves one by one corresponds, at least part second supporting part is arranged in with its corresponding supporting groove, at least one wall of the profiling body has the mesh, the diameter of mesh is less than the diameter of the reinforcing particle that is used for forming the milling piece.

Optionally, the profile modeling body includes a plurality of profile modeling pieces, the profile modeling piece is used for forming at least part the milling piece, a plurality of the profile modeling piece is the ring form and distributes and enclose to establish and form annotates the liquid chamber, the terminal surface on profile modeling piece top has the imitative groove, every the profile modeling groove of profile modeling piece all with annotate the liquid chamber intercommunication, the terminal surface of profile modeling piece bottom is the inclined plane, two adjacent the top of profile modeling piece is connected with the plate body, the upper surface of plate body with the contact of base prefabrication body, the lower surface of plate body with the support frame contact.

The milling tool comprises a milling body and the milling head, wherein the end face of one end of the milling body is provided with a second connecting hole, and the second connecting hole is matched with the first connecting hole and is respectively configured to connect the milling body with the milling base.

The utility model has the beneficial effects that:

the milling head, the die-casting tool and the milling tool thereof provided by the utility model are composed of the milling base and the milling block, the milling block is die-cast and formed on the milling base, so that the milling base and the milling base have better connection strength, the probability of separation of the milling block and the milling base is reduced, the milling base can be detachably connected with the milling body through the first connecting hole on the milling base, the connection mode has lower requirements on operators, the problem of poor connection quality is avoided, the connection reliability is higher, the probability of separation of the milling base and the milling body is lower, and the probability of separation of the milling block and the milling body is lower.

Drawings

FIG. 1 is a schematic view of a milling head according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a milling head according to a first embodiment of the present utility model;

FIG. 3 is a schematic view of a milling block according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a milling base according to a first embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a milling base according to a first embodiment of the present utility model;

fig. 6 is an exploded schematic view of a milling head die casting tooling provided in a second embodiment of the present utility model;

fig. 7 is a top view of a milling head die casting tooling provided in a second embodiment of the present utility model;

FIG. 8 is a schematic diagram illustrating an assembly of a support frame, a profile modeling body and a base preform according to a second embodiment of the present utility model;

FIG. 9 is a top view of the structure of FIG. 8 according to a second embodiment of the present utility model;

FIG. 10 is a cross-sectional view A-A of FIG. 9 in accordance with the present utility model;

FIG. 11 is a second schematic diagram illustrating assembly of a support frame, a profile modeling body and a base preform according to a second embodiment of the present utility model;

FIG. 12 is a schematic diagram of a second embodiment of the present utility model;

FIG. 13 is a schematic diagram of a second embodiment of the present utility model;

FIG. 14 is a schematic view of a base preform according to a second embodiment of the present utility model;

fig. 15 is a front view of a supporting frame according to a second embodiment of the present utility model;

FIG. 16 is a schematic view of a milling tool according to a third embodiment of the present utility model;

fig. 17 is a schematic structural view of a milling body according to a third embodiment of the present utility model.

In the figure:

1. milling a base; 11. a first connection hole; 12. a through hole; 121. an arc-shaped groove; 13. a positioning structure; 14. shallow grooves; 15. an assembly groove;

2. milling the block; 21. a convex column; 211. inclined holes; 22. an abrasive structure; 221. an abrasive section; 2211. an inclined end face; 23. a bump;

10. a case; 20. a support frame; 201. a first support portion; 202. a second supporting part; 30. a simulated body; 301. a mesh; 302. a support groove; 303. profiling blocks; 3031. a simulated groove; 304. a plate body; 305. a water diversion trench; 300. a liquid injection cavity; 40. a base prefabricated member; 401. a block;

100. milling the body; 1001. a second connection hole; 1002. trapezoidal blocks.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

The embodiment provides a mill head, is made through die casting shaping's mode, and mill head and mill body are connected through non-welded mode, have reduced mill head and the probability of mill body separation, have improved the reliability of milling tool including mill head.

As shown in fig. 1 and 2, the milling head is of an integral structure, and comprises a milling base 1 and a milling block 2. The milling block 2 is die-cast and formed on the milling base 1, that is, the milling base 1 is of a preformed structure, and then the milling block 2 is formed on the milling base 1 in a die-casting mode so as to realize connection of the milling block and the milling base 1. Moreover, the end face of one end of the milling base 1 has a first connecting hole 11, the first connecting hole 11 is used for being detachably connected with the milling body 100 of the milling tool, in some embodiments, the first connecting hole 11 is a threaded hole, the milling body 100 and the milling head are connected through a bolt, and one end of the bolt passes through at least part of the milling body 100 and then is screwed into the first connecting hole 11 so as to fixedly connect the milling head and the milling body 100. It can be seen that the milling head and the milling body 100 in this embodiment are connected by a non-welding manner. It should be noted that, in this embodiment, the material of the milling block 2 is a metal matrix composite ceramic material, that is, the milling block 2 is a ceramic-metal composite body, so as to have a better milling effect.

The milling head that this embodiment provided comprises milling base 1 and milling piece 2, and milling piece 2 die casting shaping is on milling base 1 for both have better joint strength, have reduced the probability that milling piece 2 and milling base 1 separated, and milling base 1 can be through the first connecting hole 11 on it with mill body 100 detachable connection, this connected mode is lower to operating personnel's requirement, the poor problem of connection quality can not appear, and the connection reliability is higher, and the probability that makes milling base 1 and milling body 100 separate is lower, and then makes milling piece 2 and milling body 100 separate is lower.

And, if the milling tool is integrally die-cast and formed, although the milling body and the milling head have better connection strength, the milling tool is larger in overall size, a larger die and a die casting stroke are needed during die casting, the operation is difficult, and the cost is higher, and the milling head provided by the embodiment is smaller in size by arranging the milling base 1 and is used for pre-burying the milling base 1 in the die tool, so that the milling block 2 is connected with the milling body 100 through the milling base 1 without arranging a larger die and a die casting stroke, the operation difficulty is reduced, and the cost can be lower.

In some alternative embodiments, as shown in fig. 4, the milling base 1 has through holes 12 penetrating both ends thereof, specifically, the through holes 12 penetrate both ends of the milling base 1 in the length direction, i.e., the milling base 1 has a circular ring shape. The shape of the milling base 1 may be set according to actual needs, and for example, the milling base 1 may be cylindrical, prismatic, truncated-cone-shaped, prismatic-mesa-shaped, or the like, which is not limited in this embodiment. In the die casting process, molten metal can be poured into the milling head die casting tool through the through hole 12. The through hole 12 may be a cylindrical hole, a prismatic hole, a truncated cone hole, a prismatic hole, or the like, which is not limited in this embodiment. In addition, through the arrangement of the through holes 12, reinforcing particles can be conveniently pre-buried before molten metal is injected, and gas is conveniently discharged through the through holes 12. The material of the milling base 1 in this embodiment is steel No. 45.

Further, referring to fig. 1 and 3, the milling block 2 includes a protrusion 21 and an abrasive structure 22 disposed at one end of the protrusion 21, and the protrusion 21 is disposed through the through hole 12, so as to improve the bonding strength between the milling block 2 and the milling base 1. In some embodiments, the other end of the post 21 extends to the end face of one end of the milling base 1, so that the post 21 can completely fill the through hole 12, further improving the bonding strength of the milling block 2 and the milling base 1. In some embodiments, the boss 21 is provided with at least one inclined hole 211, and the inclined hole 211 is arranged along the length direction of the boss 21 and penetrates through the boss 21 for water injection cooling during the milling operation of the milling block 2. In this embodiment, the end surface of the protruding pillar 21, which is not connected to one end of the abrasive structure 22, is further provided with a conical groove, and the inclined hole 211 is disposed at the bottom of the conical groove.

Optionally, the end surface of the other end of the milling seat 1 is in contact with the abrasive structure 22, increasing the area of contact of the milling seat 1 with the milling block 2, and also enabling the abrasive structure 22 to withstand a certain torque.

Alternatively, as shown in fig. 5, the hole wall of the through hole 12 is provided with a plurality of arc grooves 121, and the plurality of arc grooves 121 are arranged at intervals around the axis of the milling base 1, in this embodiment, the arc grooves 121 do not penetrate through the milling base 1 along the axial direction of the milling base 1, and the arc grooves 121 are arranged near the abrasive structure 22, and it should be noted that the arc grooves 121 are arc-shaped in the radial direction of the milling base 1, and may specifically be arc-shaped. The arc-shaped groove 121 having an arc shape can be easily manufactured. The plurality of arc-shaped grooves 121 may be arranged at equal intervals, or, as shown in fig. 5, the plurality of arc-shaped grooves 121 may be arranged in groups, each group including a plurality of arc-shaped grooves 121, the plurality of arc-shaped grooves 121 in each group being arranged at equal intervals between the plurality of groups of arc-shaped grooves 121. The arc-shaped groove 121 is intended to be in contact with the milling block 2, so that the milling seat 1 has a large contact area with the milling block 2.

Further, referring to fig. 3, the milling block 2 further includes a plurality of protrusions 23, each protrusion 23 is disposed on a side wall of the boss 21, specifically, the protrusions 23 are disposed near the abrasive structure 22, the plurality of protrusions 23 are in one-to-one correspondence with the plurality of arc grooves 121, and each protrusion 23 is disposed in the corresponding arc groove 121, so that the milling head can bear a certain torque during operation, rotation of the milling block 2 relative to the milling base 1 is prevented, and reliability of the milling tool is improved. In the present embodiment, the bump 23 is formed on the milling base 1 by die casting, and the bump 23 is in close contact with the milling base 1.

In some alternative embodiments, as shown in fig. 3, the abrasive structure 22 includes a plurality of abrasive portions 221, the plurality of abrasive portions 221 are disposed at intervals around the axis of the milling block 2, the end surface of the abrasive portion 221 away from the end of the post 21 is an inclined surface, and for convenience of description, the end surface of the abrasive portion 221 away from the end of the post 21 is referred to as an inclined end surface 2211. By setting the inclined end surface 2211 as an inclined surface, the milling effect and the milling efficiency of the object to be milled can be improved. Alternatively, the cross-sectional shape of the abrasive portion 221 may be a sector, a polygon, or the like, which is not limited in this embodiment. The abrasive portion 221 is provided with three, four, five, or the like. In some embodiments, the inclination angle of the inclined end surface 2211 is 10 °, and in other embodiments, the inclination angle of the inclined end surface 2211 is another numerical value, which is not limited in this embodiment. Of the plurality of abrasive sections 221, the inclined end surface 2211 of one abrasive section 221 is inclined toward the subsequent one abrasive section 221 in the arrangement direction of the abrasive sections 221.

In some alternative embodiments, referring to fig. 1 or 4, the end surface of the milling base 1 provided with the first attachment hole 11 is also provided with a positioning structure 13. The positioning structure 13 may be a protrusion or a groove, in this embodiment, the positioning structure 13 is a groove, and the positioning structure 13 is disposed away from the first connecting hole 11. The positioning structure 13 is configured to position the milling body 100 so as to facilitate the alignment and installation of the milling base 1 and the milling body 100, and the positioning structure 13 can also bear a certain torque so as to avoid that all the torque is applied to the bolts connecting the milling base 1 and the milling body 100, thereby reducing the probability of bolt fracture and prolonging the service life of the milling tool.

Further alternatively, referring to fig. 4, the first connecting holes 11 and the positioning structures 13 are respectively provided with a plurality of first connecting holes 11 and a plurality of positioning structures 13, which are alternately arranged in turn along the circumferential direction of the milling base 1, so as to improve the strength of connection between the milling base 1 and the milling body 100. In this embodiment, four first connecting holes 11 and four positioning structures 13 are respectively disposed.

Alternatively, as shown in fig. 5, the end surface of the milling base 1, on which the end of the first connecting hole 11 is not provided, has an assembly groove 15, and the assembly groove 15 is used for assembly with a milling head die casting tool. The side walls of the milling base 1 are provided with shallow grooves 14, the shallow grooves 14 may be used for water diversion or aligned with the milling body 100. In some embodiments, shallow slot 14 communicates with mounting slot 15.

The milling head that this embodiment provided, milling piece 2 and milling base 1 pass through die casting composite formation for milling piece 2 does not directly weld with milling body 100, but is connected with milling body 100 through milling base 1, milling base 1 has first connecting hole 11, and first connecting hole 11 is used for can dismantling with milling body 100 to be connected, has realized milling base 1 and milling body 100's dismantlement and has connected, and then has realized milling piece 2 and milling body 100's dismantlement and be connected, is convenient for milling piece 2's change, and need not to change milling body 100, has reduced milling tool's maintenance cost.

Example two

The present embodiment provides a milling head die-casting tool for manufacturing a milling head as in the first embodiment, and as shown in fig. 6 and 7, the milling head die-casting tool includes a case 10, a support frame 20, an imitation body 30, and a base preform 40.

The case 10 is hollow and has an open top, and the case 10 may be configured according to practical needs, such as a cylinder, a prism, etc., which is not limited in this embodiment, and the case 10 in this embodiment is illustratively a cuboid. The size of the box 10 is matched with the lower cavity of the die-casting die, so that the box 10 can be just put down against the inner wall, the liquid metal can not be easily stuck in the lower cavity of the die-casting die, the die-casting die is easier to be removed, and optionally, the box 10 is manufactured by welding 45 steel plates, wherein the thickness of the steel plates is 2 mm.

The supporting frame 20 is supported and limited in the case 10, and in some embodiments, the supporting frame 20 contacts with the bottom wall and the side wall of the case 10, so that the case 10 supports and limits the supporting frame 20, and further the supporting frame 20 can be prevented from moving or shaking relative to the case 10. Alternatively, the support frame 20 is formed from carbon steel welding.

The height of the supporting frame 20 is smaller than the height of the case 10. The contoured body 30 is mounted to the support frame 20. In some embodiments, the contoured body 30 can be supported by the support frame 20 to prevent the contoured body 30 from moving or rocking. The support 20 is further configured such that the profile modeling body 30 has a certain height and is located at the center of the box 10, and it should be noted that the profile modeling body 30 may be inserted or clamped on the support 20, so as to be detachable with respect to the support 20. The shaped body 30 is used to form the milling block 2 of the milling head, i.e. the shape of the shaped body 30 is matched to the shape of the milling block 2 to enable the formation of a milling block 2 having a specific shape. A base preform 40 is supported on the contoured body 30, and in some embodiments, the base preform 40 is inserted on the contoured body 30, the base preform 40 being used to form the milling base 1.

When the milling head die casting tooling provided by the embodiment is used, the support frame 20 is placed in the box body 10, the imitation body 30 is installed on the support frame 20, the base prefabricated body 40 is placed on the imitation body 30 and supported by the imitation body 30, then molten metal is injected into the box body 10 and the imitation body 3, the box body 10 is filled with the molten metal, then the pressure head is controlled to be pressed on the molten metal in the box body 10, the pressure is maintained for a period of time, the molten metal is solidified after the pressure maintaining is finished, and then demoulding and post-processing are carried out to form the milling head. During the post-processing, the base preform 40 is processed to form the milling base 1, after which the milling base 1 is detachably connected to the milling body 100 through the first connection hole 11. In some embodiments, the milling insert 1 is bolted to the milling body 100.

The milling head die-casting frock that this embodiment provided forms the milling head through die-casting fashioned mode, and the milling head is connected through non-welded mode with milling body 100, and this connected mode is lower to operating personnel's requirement, can not appear the poor problem of connection quality, and connects the reliability higher for the probability that milling base 1 and milling body 100 separate is lower, and then makes the probability that milling piece 2 and milling body 100 separate lower.

In order to increase the milling strength of the milling block 2, reinforcing particles are typically placed in the area where the milling block 2 is formed (in this embodiment in the profile body 30) before the injection of the molten metal in order to reduce the wear rate of the milling block 2. The reinforcing particles may be made of ceramic, and the present embodiment is not limited thereto. In some alternative embodiments, as shown in FIG. 8, at least one wall of the contoured body 30 has a mesh 301, the mesh 301 being capable of facilitating the flow of molten metal outside of the contoured body 30 into the contoured body 30, and the flow of molten metal inside the contoured body 30 out of the contoured body 30. In this embodiment, the side wall and the bottom wall of the profiling body 30 are provided with meshes 301, and a plurality of meshes 301 on each wall are uniformly distributed. In addition, the mesh 301 is provided to avoid trapping gas and rapid solidification of the liquid metal during die casting.

Further alternatively, the diameter of the mesh 301 is smaller than the diameter of the reinforcing particles used to form the milling block 2 so that the reinforcing particles within the contoured body 30 do not flow out of the contoured body 30, yet the molten metal is able to flow out of the contoured body 30 smoothly. In some embodiments, the base preform 40 may have an injection hole (not shown), and the profile body 30 may communicate with the injection hole of the base preform 40, through which molten metal may be injected when injecting the molten metal; in other embodiments, the molten metal is injected along the sidewalls of the perimeter of the tank 10. Because the thermal shock of the liquid metal can cause certain deformation to the profiling body 30, the thermal shock of the liquid metal injected from the periphery of the box body 10 to the profiling body 30 is smaller, the probability of deformation of the profiling body 30 is reduced, and the stability and the manufacturing success of the profiling body 30 are improved. The injection hole in the present embodiment is used to form the through hole 12 of the milling base 1.

Referring to fig. 8 to 11, in the present embodiment, the matching relationship between the profiling body 30 and the supporting frame 20 is that the supporting frame 20 is inserted into one end of the profiling body 30 and is limited. As shown in fig. 12 and 13, for example, the bottom end of the profiling body 30 is provided with a plurality of supporting grooves 302, the supporting grooves 302 are provided with notches at the bottom end and the side wall of the profiling body 30, as shown in fig. 15, the support frame 20 comprises a first supporting portion 201 and a plurality of second supporting portions 202, the plurality of second supporting portions 202 are respectively connected to the first supporting portion 201, the plurality of second supporting portions 202 are in one-to-one correspondence with the plurality of supporting grooves 302, at least part of the second supporting portions 202 are placed in the supporting grooves 302 corresponding to the second supporting portions and are in contact with the groove walls of the supporting grooves 302, that is, the thickness of the second supporting portions 202 is approximately equal to the groove width of the supporting grooves 302, and by providing the plurality of supporting grooves 302 and the plurality of second supporting portions 202, the supporting effect on the profiling body 30 can be improved. One end of the plurality of second supporting parts 202 far away from the first supporting part 201 is abutted against the side wall of the box body 10, so that the profiling body 30 can be located at the center of the box body 10, a prefabricated body with one thick side and one thin side is prevented from being formed, and further subsequent milling processing into the milling block 2 is facilitated. In this embodiment, the first supporting portion 201 is cross-shaped, the second supporting portions 202 are four, the four second supporting portions 202 are fixedly connected to the four ends of the first supporting portion 201, and the corresponding supporting grooves 302 are four. It should be noted that, the supporting frame 20 in the present embodiment is an integrally formed structure, so as to have a high structural strength.

In some alternative embodiments, as shown in fig. 12 and 13, contoured body 30 includes a plurality of contoured blocks 303. Each profiling block 303 is used to form at least part of the milling block 2, in this embodiment each profiling block 303 is used to form one abrasive portion 221 of the milling block 2. As shown in fig. 12, the plurality of profiling blocks 303 are distributed in a circular ring shape and enclose to form a liquid injection cavity 300, and in some embodiments, an axis of the liquid injection cavity 300 coincides with an axis of the profiling body 30. In some embodiments, the sidewalls of two adjacent contoured blocks 303 are connected by a semi-circular plate that encloses the pour chamber 300. The bottom walls of the plurality of profiling blocks 303 are connected as one body so that the profiling body 30 is of one body structure.

Further, the end face of the top end of the profiling block 303 is provided with a profiling groove 3031, the profiling groove 3031 is internally provided with reinforcing particles, the profiling groove 3031 is used for forming the abrasive part 221, the profiling grooves 3031 of the profiling blocks 303 are mutually communicated, in the embodiment, the top end and the side wall of the profiling block 303 are provided with notches, the notch of the side wall of each profiling block 303 is formed on one side of the profiling block 303 close to the axis of the profiling body 30, or the notch of the side wall of each profiling block 303 is arranged towards the axis of the profiling body 30. The plurality of profiling grooves 3031 communicate with the priming cavity 300 through notches in the sidewall of the profiling block 303. In some embodiments, the injection cavity 300 communicates with an injection hole of the base preform 40 to enable injection of molten metal into the contoured body 30 through the injection hole.

Further alternatively, the top ends of the adjacent two profiling blocks 303 are connected by a plate body 304, the adjacent two profiling blocks 303 and the plate body 304 connected between the two profiling blocks 303 form the above-mentioned support groove 302, and the upper surface of the plate body 304 is used for being in contact with the base preform 40 to support the base preform 40, and the lower surface of the plate body 304 is in contact with the support frame 20, specifically, the top surface of the second support portion 202, so as to be capable of being supported on the second support portion 202. The plate body 304 and the support groove 302 in the present embodiment may be formed by punching and bending welding, specifically, a steel plate is welded to the bent steel plate according to a desired shape to form the dummy body 30. The thickness of the steel plate is 2 mm, for example.

Optionally, the end surface of the bottom end of the profiling block 303 is an inclined surface, so as to facilitate milling to form the inclined end surface 2211 of the milling portion 221. In this embodiment, a water diversion trench 305 can also be formed between two adjacent profiling blocks 303, and the water diversion trench 305 is located at the connection position of the two profiling blocks 303 and is used for forming the water diversion structure of the milling block 2.

Illustratively, as shown in fig. 7 or 8, the milling base 1 may be formed by machining the base preform 40, i.e., in a die casting process, the base preform 40 is placed on the contoured body 30, and after the die casting is completed, the base preform 40 may be machined to obtain the milling base 1 having a specific shape. The shape and structure of the bottom end of the base preform 40 are identical to those of the end of the milling base 1 where the first connection hole 11 is not provided, that is, the base preform 40 has the structures of the through hole 12, the arc-shaped groove 121, the assembly groove 15, and the like.

As shown in fig. 14, the base preform 40 has a plurality of blocks 401 at its bottom end, gaps between the blocks 401 are used to form the fitting grooves 15 of the milling base 1, the blocks 401 are used to be inserted into the profiling grooves 3031 of the profiling body 30 to improve the fitting effect, and the base preform 40 is partially embedded into the profiling body 30, so that it is possible to ensure that the milling base 1 is concentric and horizontal with the abrasive structure 22. The bottom of the assembly groove 15 is in contact with the plate 304, and the base preform 40 is limited by the plate 304.

When the milling head die casting tooling provided by the embodiment is used, the supporting frame 20 is placed in the box body 10, and then the imitation body 30 is inserted into the supporting frame 20 and positioned. In one assembly, reinforcing particles are first filled into the profiling groove 3031 of the profiling body 30, and then the base preform 40 is mounted on the profiling body 30; in another assembly, the base preform 40 is first mounted on the dummy body 30, and then reinforcing particles are filled into the dummy groove 3031 through the injection hole of the base preform 40 and the injection cavity 300. The top surfaces of the reinforcing particles in the profiling groove 3031 are parallel to the lower bottom surface of the base preform 40, that is, the reinforcing particles can be in contact with the lower bottom surface of the base preform 40. Thereafter, a molten metal is injected into the casing 10 along the periphery of the casing 10, and the molten metal can flow into the contoured body 30 through the mesh 301 of the contoured body 30. The pouring is stopped when the level of the molten metal in the tank 10 is about 20-40 mm above the top surface of the base preform 40. Next, a die casting operation is performed, and specific steps of the die casting operation may refer to the prior art. After the liquid metal is solidified, a cylinder is cut according to the outer circle contour of the base preform 40, and then the base preform 40 is processed, specifically, four positioning structures 13 and four first connecting holes 11 for milling the upper end face of the base 1 are processed, in this embodiment, the positioning structures 13 may be trapezoidal grooves, so as to have a better positioning effect. At the same time, a central conical groove and four inclined holes are machined in the material filled in the through hole 12 for cooperation with the milling body 100, so far the milling base 1 is finished, that is, the milling base 1 in this embodiment is formed by milling the base preform 40.

Next, the contoured body 30 of the lower half of the cylinder is found by milling, i.e., the outer sidewall of the contoured body 30 is exposed, after which the side surface of the cylinder is made perpendicular to its top surface by milling. Then, the four inclined bottom surfaces of the four profiling blocks 303 are found by milling, that is, the bottom walls of the profiling blocks 303 are exposed, and the milling is continued to expose the profiling body 30 to form the walls of the supporting groove 302, and then all the exposed profiling body 30 is milled off, so that an integrated milling head can be obtained.

The milling head die-casting frock that this embodiment provided, the top of base prefabrication body 40 is reserved and is had the follow-up processing space, and then can form milling base 1, and milling base 1 can be dismantled with milling body 100 through structures such as bolt and be connected, the reuse of milling body 100 of being convenient for. And, through spacing and support between box 10, support frame 20, profile modeling body 30, the base prefabrication body 40, make the milling base 1 that forms and abrasive material structure 22 be in concentric position and wholly lie in box 10 center, do not contact with the bottom of box 10, during the die casting, the liquid metal mobility in box 10 center is higher, and the filling performance is better, defects such as bubble are fewer, and the deformation in the high temperature die casting process can be improved to steel sheet thickness and the embedded support frame 20 of 2 millimeters. The imitation body 30 can concentrate wear-resistant particles (i.e. reinforcing particles) with high hardness in a required abrasive region (i.e. the profiling groove 3031), after die casting is completed, the inside of the imitation body 30 is abrasive containing reinforcing particles, and the outside is redundant matrix metal, so that the imitation body has lower hardness, is easy to be processed and removed later, and improves the production efficiency.

Example III

The present embodiment provides a milling tool, as shown in fig. 16 and 17, which includes a milling body 100 and a milling head of the first embodiment.

Wherein, the end face of one end of the milling body 100 has a second connection hole 1001, the second connection hole 1001 is matched with the first connection hole 11, and is used for connecting the milling body 100 with the milling base 1, specifically, the milling body 100 is connected with the milling base 1 through a bolt, and the bolt passes through the second connection hole 1001 and is screwed in the first connection hole 11. It should be noted that, the side wall of one end of the milling body 100 is provided with a groove structure, and the second connection hole 1001 extends from the end surface of one end of the milling body 100 into the groove structure, so as to be capable of facilitating the installation of the bolt.

The milling tool provided in this embodiment, milling head and milling body 100 are connected through the bolt, compare in welded mode, can reduce the connection degree of difficulty, still be convenient for the change of milling head.

Optionally, as shown in fig. 17, an end of the milling body 100 where the second connecting hole 1001 is provided is further provided with a trapezoid block 1002, and the trapezoid block 1002 is used for matching with the positioning structure 13 and for positioning connection between the milling body 100 and the milling head.

The above embodiments merely illustrate the basic principle and features of the present utility model, and the present utility model is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The milling head is characterized by comprising a milling base (1) and milling blocks (2), wherein the milling blocks (2) are die-cast and formed on the milling base (1), a first connecting hole (11) is formed in the end face of one end of the milling base (1), and the first connecting hole (11) is configured to be detachably connected with a milling body (100) of a milling tool.

2. Milling head according to claim 1, characterized in that the milling base (1) has a through hole (12) penetrating through both ends thereof, the milling block (2) comprises a protruding column (21) and an abrasive structure (22) arranged at one end of the protruding column (21), the protruding column (21) is arranged through the through hole (12), and the other end of the protruding column (21) extends to the end face of one end of the milling base (1), and the end face of the other end of the milling base (1) is in contact with the abrasive structure (22).

3. Milling head according to claim 2, characterized in that the hole wall of the through hole (12) is provided with a plurality of arc grooves (121), a plurality of arc grooves (121) are arranged at intervals around the axis of the milling base (1), the milling block (2) further comprises a plurality of protruding blocks (23) arranged on the side wall of the protruding column (21), the protruding blocks (23) are in one-to-one correspondence with the arc grooves (121), and the protruding blocks (23) are arranged in the corresponding arc grooves (121).

4. Milling head according to claim 2, characterized in that the abrasive structure (22) comprises a plurality of abrasive parts (221), the abrasive parts (221) being arranged at intervals around the axis of the milling block (2), the end surface of the abrasive part (221) remote from the end of the boss (21) being an inclined surface.

5. Milling head according to any one of claims 1-4, characterized in that the end face of the milling base (1) provided with the first connection hole (11) is further provided with a positioning structure (13), the first connection hole (11) and the positioning structure (13) are respectively provided with a plurality of, the plurality of first connection holes (11) and the plurality of positioning structures (13) are alternately arranged in sequence in the circumferential direction of the milling base (1), and the positioning structure (13) is configured to position the milling body (100).

6. Milling head die casting tooling for manufacturing a milling head according to any one of claims 1 to 5, characterized by comprising a box body (10), a support frame (20) and a profiling body (30), wherein the support frame (20) is supported and limited in the box body (10), the profiling body (30) is mounted on the support frame (20), and the profiling body (30) is used for forming milling blocks (2).

7. The milling head die casting tooling according to claim 6, further comprising a base preform (40), the base preform (40) being supported on the contoured body (30), and the base preform (40) being used to form a milling base (1).

8. The milling head die casting tooling according to claim 6, wherein the profiling body (30) has a plurality of support grooves (302), the support frame (20) comprises a first support part (201) and a plurality of second support parts (202) respectively connected to the first support part (201), the plurality of second support parts (202) are in one-to-one correspondence with the plurality of support grooves (302), at least part of the second support parts (202) are placed in the support grooves (302) corresponding thereto, at least one wall of the profiling body (30) has a mesh (301), and the diameter of the mesh (301) is smaller than the diameter of the reinforcing particles used for forming the milling block (2).

9. The milling head die casting tooling according to claim 7, wherein the profiling body (30) comprises a plurality of profiling blocks (303), the profiling blocks (303) are used for forming at least part of the milling blocks (2), the profiling blocks (303) are distributed in a circular ring shape and are surrounded to form a liquid injection cavity (300), the end face of the top end of each profiling block (303) is provided with a profiling groove (3031), the profiling grooves (3031) of each profiling block (303) are communicated with the liquid injection cavity (300), the end face of the bottom end of each profiling block (303) is an inclined surface, the top ends of two adjacent profiling blocks (303) are connected with a plate body (304), the upper surface of the plate body (304) is in contact with the base preform (40), and the lower surface of the plate body (304) is in contact with the support frame (20).

10. Milling tool, characterized in that it comprises a milling body (100) and a milling head according to any of claims 1-5, wherein the end face of one end of the milling body (100) is provided with a second connecting hole (1001), and the second connecting hole (1001) is matched with the first connecting hole (11) and is configured to connect the milling body (100) with the milling base (1).