CN112548142A

CN112548142A - Magnetic attraction enrichment type annular workpiece drilling numerical control machine tool

Info

Publication number: CN112548142A
Application number: CN202011306221.3A
Authority: CN
Inventors: 李依然
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-03-26

Abstract

The invention discloses a magnetic attraction enrichment type annular workpiece drilling numerical control machine tool, which belongs to the field of machine tools, and is characterized in that a plurality of extending thermal magnetic balls are arranged, on one hand, a drilling part of an annular workpiece can be locally heated, so that the thermal stress at the drilling part can offset part of impact force during drilling, further, the drilling part of the annular workpiece is effectively protected from being greatly deformed due to the local impact force of a drill bit, the quality of the workpiece is effectively ensured, the difficulty in subsequently correcting the shape of the workpiece is reduced, on the other hand, during drilling, under the action of heat conducting wires, a self-extending magnetic net expands and extends towards a drilling part with an inner volume, after the drill bit enters the drilling part with the inner volume, the self-extending magnetic net can adsorb chips generated at the drill bit, and the effect of effectively collecting the chips is achieved, effectively reduce clastic distribution range when drilling, reduce the clearance degree of difficulty and work load.

Description

Magnetic attraction enrichment type annular workpiece drilling numerical control machine tool

Technical Field

The invention relates to the field of machine tools, in particular to a magnetic attraction enrichment type annular workpiece drilling numerical control machine tool.

Background

The numerical control machine tool is a short name of a digital control machine tool (Computer numerical control machine tools), and is an automatic machine tool provided with a program control system. The control system is capable of logically processing and decoding a program defined by a control code or other symbolic instructions, represented by coded numbers, which are input to the numerical control device via the information carrier. After operation, the numerical control device sends out various control signals to control the action of the machine tool, and the parts are automatically machined according to the shape and the size required by the drawing.

The numerical control machine tool well solves the problem of machining of complex, precise, small-batch and various parts, is a flexible and high-efficiency automatic machine tool, represents the development direction of the control technology of modern machine tools, and is a typical mechanical and electrical integration product.

When annular workpiece punches on digit control machine tool, because its inside hollow structure, lead to when punching, inside does not have the bearing capacity, compares in plane drilling, and hollow cylindrical work piece is downwards taking place deformation more easily after punching, leads to follow-up correction degree of difficulty and the work load to its shape great, simultaneously, when drilling, the piece that drill bit department brought out easily outwards splashes, leads to clastic distribution range wider, and the clearance degree of difficulty is great.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a magnetic attraction enrichment type annular workpiece drilling numerical control machine tool, which can locally heat the drilling position of an annular workpiece through the arrangement of a plurality of extending thermal magnetic balls, so that the thermal stress at the drilling position can counteract partial impact force during drilling, further effectively protect the drilling position of the annular workpiece from being greatly deformed due to the local impact force of a drill bit, thereby effectively ensuring the quality of the workpiece and reducing the subsequent difficulty in correcting the shape of the workpiece, and on the other hand, when drilling, under the action of a heat conducting wire, a self-extending magnetic net expands and extends towards the drilling position of a recessed inner container, after the drill bit enters the drilling position of the recessed inner container, the self-extending magnetic net after extending can adsorb chips generated at the drill bit, thereby achieving the effect of effectively gathering the chips and effectively reducing the distribution range of the chips during drilling, the cleaning difficulty and the workload are reduced.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A magnetic attraction enrichment type numerical control machine tool for drilling of annular workpieces comprises a machine tool body, wherein a drilling assembly is installed at the upper end of the machine tool body, a supporting core is fixedly connected onto the machine tool body and located below the drilling assembly, a plurality of groups of extending thermal magnetic balls are fixedly connected onto the upper end of the supporting core, a plurality of uniformly distributed internal sunken hole-drilling holes are formed in the upper end of the supporting core and located in the centers of the groups of extending thermal magnetic balls respectively, a heating wire is fixedly connected onto the middle of the supporting core and in telecommunication connection with a control system of the machine tool body, a plurality of heat conducting wires corresponding to the extending thermal magnetic balls are embedded into the supporting core, one end of each heat conducting wire is fixedly connected with the heating wire, the other end of each heat conducting wire extends into the extending thermal magnetic balls, and on one hand, the drilling position of the annular workpiece can be locally heated, make the thermal stress of this department can offset the impact force when partly drilling, and then the drilling position of effective protection ring workpiece is difficult for taking place great deformation because of local drill bit impact force, thereby effectively guarantee the quality of work piece, reduce the follow-up degree of difficulty of revising the shape of work piece, on the other hand, when drilling, under the effect of heat conduction silk, from extending the expansion of magnetic net, and extend towards the drilling department of internal trapped volume, the drill bit enters into after the drilling of internal trapped volume, the piece that produces can be located to the drill bit from extending the magnetic net after extending adsorbs, reach the clastic effect of effective gathering, clastic distribution range when effectively reducing drilling, reduce the clearance degree of difficulty and work load.

Further, every group extend the thermomagnetic ball and all be the annular distribution, and extend the number of thermomagnetic ball and be no less than 5, adjacent two extend thermomagnetic ball and contact each other, when drilling, on the one hand the drill bit enters into the internal cavity and drills after, a plurality of thermomagnetic balls that extend are located the drill bit outer lane, can adsorb the piece that drill bit department produced, reach the clastic effect of effective gathering, clastic distribution range when effectively reducing drilling, reduce the clearance degree of difficulty and work load, on the other hand, extend thermomagnetic ball and can need drill hole department to annular workpiece, carry out the local heating, make when drilling, the thermal stress of this department can offset the deformation force when partial drilling, and then the difficult great deformation that takes place in the drilling position of effective protection annular workpiece, thereby effectively guarantee the quality of work piece, reduce the follow-up degree of difficulty of revising the shape of work piece.

Further, extend hot magnetic ball and include that the stereoplasm props end, fixed connection prop the collection bits end in the end outer end at the stereoplasm, collection bits end is located the one side towards the internal volume drilling, enclose into the gas accuse chamber between stereoplasm props the end and the collection bits end, gas accuse intracavity portion is filled with high heat conduction gas.

Further, the heat conduction silk includes that heat conduction owner silk, a plurality of fixed connection are far away from at the heat conduction owner silk heat conduction branch line and the fixed connection of heat conduction owner silk outer end and are supporting core one end tip, and is a plurality of the heat conduction branch line is located the stereoplasm props the end, tip and stereoplasm prop end top parallel and level, before driling, the control system control heater strip circular telegram of this lathe makes it generate heat, and the heat is through transmitting to extending hot magnetic ball department, makes on the one hand generate heat to treat to heat around drilling, reduce the deformation volume because of the local atress of drill bit when this department drills, on the other hand, the heat conducts to the gas accuse intracavity through the heat conduction branch line, makes its inside high heat-conducting gas thermal expansion.

Further, the insulating layer has all been wrapped up to heat conduction main silk and heat conduction branch line outer end, heat conduction branch line tip runs through the stereoplasm and props the end and extend to the gas accuse intracavity, through the insulating layer, effectively guarantees that the heat is difficult for giving off to the external world in the transmission process, effectively guarantees thermal utilization ratio for high heat-conducting gas and department are heated sooner.

Further, collection bits end outer end fixedly connected with is from extending the magnetic net, extend the magnetic net certainly and include a plurality of with collection bits end fixedly connected's radial magnetic tube and a plurality of and radial magnetic tube transverse magnetic tube of weaving each other and being connected, the tip fixedly connected with magnetism that collection bits end was kept away from to radial magnetic tube is inhaled the ball.

Further, horizontal magnet tube and radial magnet tube are flexible hollow structure, and the tip of the two is all fixed to run through collection bits end and communicates with each other with gas accuse chamber, high heat conduction gas is heated the inflation back, can be located the tip of gas accuse intracavity along horizontal magnet tube and radial magnet tube and stretch to the two inside, make the expansion of self-extension magnetic net, thereby make magnetism inhale the ball and move towards the center department that every group extends hot magnetic ball, be close to the drill bit more, make the adsorption effect to the piece that the drill bit department produced better, show to improve the collection effect to drilling piece, thereby better to the effect that reduces the clearance degree of difficulty of piece and work load.

Further, horizontal magnetron and radial magnetron outer end surface are all fixed and are inlayed the magnetism point that has a plurality of evenly distributed, the magnetism point is made for magnetic material, makes not only magnetism suction ball department can produce the adsorption affinity to the piece from extending the magnetic net through the magnetism point, and its inside possesses the adsorption affinity equally, provides more attachment point for the piece that is adsorbed, effectively guarantees that the piece is difficult for dropping after being adsorbed.

Further, the ball is inhaled to magnetism includes the stereoplasm shell with radial magnet tube fixed connection, places the magnetism powder ball in the stereoplasm shell to and a plurality of aluminum alloy wire of connection between magnetism powder ball and radial magnet tube inner wall, make magnetism inhale the piece that the ball utensil produced when magnetism can adsorb the drilling through the magnetism powder ball, effectively improve radial magnet tube and inhale the joint strength between the ball through aluminum alloy wire, make it in the extension in-process, be difficult for because of inhaling the condition emergence that ball department overweight leads to droing of magnetism.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through the setting of a plurality of hot magnetic balls that extend, on the one hand, can carry out the local heating to the drilling department of cyclic annular work piece, the impact force when making the thermal stress of this department can offset partial drilling, and then the drilling position of effective protection cyclic annular work piece is difficult for taking place great deformation because of the drill bit impact force of part, thereby effectively guarantee the quality of work piece, reduce the follow-up degree of difficulty of revising the shape of work piece, on the other hand, when drilling, under the effect of heat conduction silk, from extending the magnetic net inflation of magnetic net, and extend towards the drill hole department of internal trapped volume, the drill bit enters into behind the drill hole of internal trapped volume, the piece that can produce from extending the magnetic net after the extension is to drill bit department adsorbs, reach the effect of effective gathering piece, clastic distribution range when effectively reducing drilling, reduce the clearance degree of difficulty and work load.

(2) Every group extends the hot magnetic ball and all is the annular distribution, and the number that extends hot magnetic ball is no less than 5, two adjacent hot magnetic ball of extension contact each other, when drilling, on the one hand the drill bit enters into after the internal cavity drilling, a plurality of hot magnetic balls that extend are located the drill bit outer lane, can adsorb the piece that drill bit department produced, reach the clastic effect of effective gathering, clastic distribution range when effectively reducing drilling, reduce the clearance degree of difficulty and work load, on the other hand, extend hot magnetic ball and can need drill hole to annular workpiece, carry out the local heating, make when drilling, the thermal stress of this department can offset the deformation force when partly drilling, and then the difficult great deformation that takes place in the drilling position of effective protection annular workpiece, thereby effectively guarantee the quality of work piece, reduce the follow-up degree of difficulty of revising the shape of work piece.

(3) The extension thermomagnetic ball comprises a hard support end and a chip collecting end fixedly connected to the outer end of the hard support end, the chip collecting end is located on one side facing the inner sunken capacity drilling hole, a pneumatic control cavity is enclosed between the hard support end and the chip collecting end, and high-heat-conductivity gas is filled in the pneumatic control cavity.

(4) The heat conduction silk includes heat conduction owner silk, a plurality of fixed connection are at the heat conduction branch line and the fixed connection of heat conduction owner silk outer end keep away from supporting core one end tip at heat conduction owner silk, a plurality of heat conduction branch lines are located the stereoplasm and prop the end, the tip props end top parallel and level with the stereoplasm, before driling, the control system control heater strip circular telegram of this lathe, make it generate heat, the heat is through transmitting to extending hot magnetic ball department, on the one hand make generate heat, thereby treat to heat around the drilling, reduce the deformation volume because of the local atress of drill bit when this department drills, on the other hand, the heat conducts to the gas accuse intracavity through the heat conduction branch line, make its inside high heat conduction gas thermal expansion.

(5) The thermal-insulating layer has all been wrapped up to heat conduction main silk and heat conduction branch line outer end, and heat conduction branch line tip runs through the stereoplasm and props the end and extend to gas accuse intracavity, through the thermal-insulating layer, effectively guarantees that the heat is difficult for giving off to the external world in the transmission process, effectively guarantees thermal utilization ratio for high heat-conducting gas and department are heated sooner.

(6) The collection bits end outer end fixedly connected with is from extending the magnetic screen, and the magnetic screen that extends includes a plurality of radial magnetic tubes and a plurality of and radial magnetic tube intertexture's horizontal magnetic tube of being connected each other with collection bits end fixedly connected with magnetism suction ball, radial magnetic tube keep away from the tip fixedly connected with magnetism of collection bits end.

(7) Horizontal magnet tube and radial magnet tube are flexible hollow structure, and the tip of the two is all fixed to run through collection bits end and communicate with each other with gas accuse chamber, high heat conduction gas is heated the inflation back, can be located the tip of gas accuse intracavity along horizontal magnet tube and radial magnet tube and stretch to the two inside, make from extending the magnetic net inflation, thereby make magnetism inhale the ball and move towards the center department that every group extends hot magnetic ball, be close to the drill bit more, make the adsorption effect to the piece that produces of drill bit department better, show to improve the collection effect to drilling piece, thereby the effect to reducing the clearance degree of difficulty of piece and work load is better.

(8) Horizontal magnetron and radial magnetron outer end surface all fixed inlay have a plurality of evenly distributed's magnetism point, and the magnetism point makes for magnetic material, makes not only magnetism suction ball department can produce the adsorption affinity to the piece from extending the magnetic net through the magnetism point, and its inside possesses the adsorption affinity equally, provides more attachment point for the piece that is adsorbed, effectively guarantees that the piece is difficult for dropping after being adsorbed.

(9) Magnetism is inhaled the ball and is included the stereoplasm shell with radial magnet tube fixed connection, place the magnetic powder ball in the stereoplasm shell, and a plurality of aluminum alloy wires of connection between magnetic powder ball and radial magnet tube inner wall, make magnetism inhale the piece that the ball utensil magnetism produced when can adsorbing drilling through the magnetic powder ball, effectively improve radial magnet tube and magnetism through aluminum alloy wire and inhale the joint strength between the ball, make it at the extension in-process, be difficult for because of magnetism inhales ball department overweight and lead to the condition emergence of flagging.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a schematic structural view of the front side of the support core of the present invention;

FIG. 4 is a schematic structural view of a cross-section of a support core of the present invention;

FIG. 5 is a schematic structural view of a cross section of an extended thermomagnetic sphere of the present invention;

FIG. 6 is a schematic view of the magnetic attraction ball of the present invention.

The reference numbers in the figures illustrate:

the device comprises a machine tool body 1, a drilling assembly 2, a supporting core 3, an extension thermal magnetic ball 4, a hard supporting end 41, a scrap collecting end 42, a recessed capacity drilling hole 5, a heating wire 6, a heat conducting wire 7, a heat conducting main wire 71, a heat conducting branch wire 72, a transverse magnetic pipe 81, a radial magnetic pipe 82, a magnetic suction ball 9, a hard shell 91, a magnetic powder ball 92, an aluminum alloy wire 93 and a magnetic point 10.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; 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.

Example 1:

referring to fig. 1-3, a magnetic attraction enrichment type annular workpiece drilling numerical control machine tool comprises a machine tool body 1, a drilling assembly 2 is mounted at the upper end of the machine tool body 1, a supporting core 3 is fixedly connected to the machine tool body 1, the supporting core 3 is located below the drilling assembly 2, a plurality of groups of extending thermal magnetic balls 4 are fixedly connected to the upper end of the supporting core 3, a plurality of uniformly distributed internal recessed bore holes 5 are drilled at the upper end of the supporting core 3, the plurality of internal recessed bore holes 5 are respectively located at the centers of the plurality of groups of extending thermal magnetic balls 4, each group of extending thermal magnetic balls 4 are annularly distributed, the number of the extending thermal magnetic balls 4 is not less than 5, two adjacent extending thermal magnetic balls 4 are in contact with each other, when drilling, on one hand, after a drill enters the internal recessed bore holes 5, the plurality of extending thermal magnetic balls 4 are located at the outer ring of the drill, debris generated at the drill bit can be adsorbed, the clastic distribution range when effectively reducing drilling reduces clearance degree of difficulty and work load, and on the other hand, extension hot magnetic ball 4 can carry out the local heating to annular workpiece needs drilling department for when drilling, the deformation force when partial drilling can be offset to the thermal stress of this department, and then the difficult great deformation that takes place of the drilling position of effective protection annular workpiece, thereby effectively guarantee the quality of work piece, reduce the follow-up degree of difficulty of revising the shape of work piece.

Referring to fig. 4, a heating wire 6 is fixedly connected to the middle of a support core 3, the heating wire 6 is in telecommunication connection with a control system of a machine tool body 1, a plurality of heat conducting wires 7 corresponding to the extending thermal magnetic balls 4 are embedded in the support core 3, one end of each heat conducting wire 7 is fixedly connected with the heating wire 6, the other end of each heat conducting wire 7 extends into the corresponding extending thermal magnetic ball 4, referring to fig. 5, each extending thermal magnetic ball 4 comprises a hard support end 41, a chip collecting end 42 fixedly connected to the outer end of the hard support end 41, the chip collecting end 42 is located on one side facing the inner recessed drilling hole 5, a pneumatic control cavity is defined between the hard support end 41 and the chip collecting end 42, high heat conducting gas is filled in the pneumatic control cavity, each heat conducting wire 7 comprises a heat conducting main wire 71, a plurality of heat conducting branch wires 72 fixedly connected to the outer end of the heat conducting main wire 71 and a plurality of heat conducting branch wires 73 fixedly connected to the end portion of the, the end part 73 is parallel to the top part of the hard support end 41, before drilling, a control system of the machine tool controls the heating wire 6 to be electrified to heat the heating wire, the heat is transferred to the position of the extended thermomagnetic ball 4 through the heating wire 8, on one hand, the heating wire 73 heats the periphery to be drilled, and the deformation quantity caused by local stress of a drill bit during drilling at the position is reduced, on the other hand, the heat is transferred into the pneumatic control cavity through the heat conducting branch 72 to enable high heat-conducting gas in the pneumatic control cavity to be heated and expanded, the outer ends of the heat conducting main wire 71 and the heat conducting branch 72 are wrapped with heat insulation layers, the end part of the heat conducting branch 72 penetrates through the hard support end 41 and extends into the pneumatic control cavity, and through the heat insulation layers, the heat is effectively prevented from being easily dissipated to the outside in the transferring;

the outer end of the scrap collecting end 42 is fixedly connected with a self-extending magnetic net, the self-extending magnetic net comprises a plurality of radial magnetic pipes 82 fixedly connected with the scrap collecting end 42 and a plurality of transverse magnetic pipes 81 connected with the radial magnetic pipes 82 in a mutual weaving mode, the end part, far away from the scrap collecting end 42, of each radial magnetic pipe 82 is fixedly connected with a magnetic suction ball 9, each transverse magnetic pipe 81 and each radial magnetic pipe 82 are of a flexible hollow structure, and the end parts of the two are fixedly penetrated through the scrap collecting end 42 and communicated with the pneumatic control cavity, after the high heat-conducting gas is heated and expanded, will propagate to the inside of the transverse magnetic pipe 81 and the radial magnetic pipe 82 along the ends thereof in the pneumatic control cavity, so that the self-extending magnetic net expands, so that the magnetic suction balls 9 move towards the center of each set of extended thermo-magnetic balls 4, closer to the drill bit, make the adsorption efficiency to the piece that drill bit department produced better, show the gathering effect that improves the piece of drilling to the effect to reducing the clearance degree of difficulty and the work load of piece is better.

Referring to fig. 6, a plurality of magnetic dots 10 are uniformly distributed and fixedly embedded on the outer end surfaces of the transverse magnetic tube 81 and the radial magnetic tube 82, the magnetic dots 10 are made of a magnetic material, the self-extending magnetic net can generate an adsorption force on the debris not only at the position of the magnetic attraction ball 9 through the magnetic dots 10, the magnetic attraction ball 9 also has an adsorption force inside, so as to provide a plurality of attachment points for the adsorbed debris, and effectively ensure that the debris is not easy to fall off after being adsorbed, the magnetic attraction ball 9 comprises a hard shell 91 fixedly connected with the radial magnetic tube 82, a magnetic powder ball 92 placed in the hard shell 91, and a plurality of aluminum alloy wires 93 connected between the magnetic powder ball 92 and the inner wall of the radial magnetic tube 82, the magnetic attraction ball 9 can adsorb the debris generated during drilling through the magnetic powder ball 92, the connection strength between the radial magnetic tube 82 and the magnetic attraction ball 9 is effectively improved through the aluminum alloy wires 93, so that during the extending process, the magnetic suction ball 9 is not easy to sag due to overweight.

Through the arrangement of the plurality of extension thermomagnetic balls 4, on one hand, the extension thermomagnetic balls 4 can locally heat the part of the annular workpiece needing to be drilled, so that when the annular workpiece is drilled, the thermal stress at the position can offset the impact force from the drill bit during partial drilling, thereby effectively protecting the drilling part of the annular workpiece from being greatly deformed due to the local impact force of the drill bit, thereby effectively ensuring the quality of the workpiece and reducing the difficulty of subsequently correcting the shape of the workpiece, on the other hand, when drilling, under the action of the heat conducting wire 7, the self-extending magnetic net expands and extends towards the internal recessed capacity drilling hole 5, after the drill bit enters the internal recessed capacity drilling hole 5, the piece that produces can be located to the drill bit to the self-extension magnetic screen after the extension adsorbs, reaches the clastic effect of effective gathering, and clastic distribution range reduces the clearance degree of difficulty and work load when effectively reducing drilling.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides an enrichment formula annular work piece drilling digit control machine tool is inhaled to magnetism, includes lathe body (1), drilling subassembly (2), its characterized in that are installed to lathe body (1) upper end: the machine tool body (1) is fixedly connected with a supporting core (3), the supporting core (3) is positioned below the drilling component (2), the upper end of the supporting core (3) is fixedly connected with a plurality of groups of extension thermomagnetic balls (4), the upper end of the supporting core (3) is provided with a plurality of uniformly distributed internal sunken content drilling holes (5), the plurality of internal sunken content drilling holes (5) are respectively positioned at the centers of the plurality of groups of extension thermomagnetic balls (4), the middle part of the supporting core (3) is fixedly connected with a heating wire (6), the heating wire (6) is in telecommunication connection with a control system of the machine tool body (1), a plurality of heat conducting wires (7) corresponding to the extending thermomagnetic balls (4) are embedded in the supporting core (3), one end of the heat conducting wire (7) is fixedly connected with the heating wire (6), and the other end of the heat conducting wire (7) extends into the extension thermomagnetic ball (4).

2. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 1, wherein: every group extend hot magnetic ball (4) and all be the annular distribution, and extend the number of hot magnetic ball (4) and be no less than 5, adjacent two extend hot magnetic ball (4) and contact each other.

3. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 2, wherein: extend hot magnetism ball (4) and prop end (41), fixed connection including the stereoplasm and prop collection bits end (42) of end (41) outer end at the stereoplasm, collection bits end (42) are located the one side towards internal volume drilling (5), enclose into the gas accuse chamber between stereoplasm props end (41) and collection bits end (42), gas accuse intracavity portion is filled has high heat-conducting gas.

4. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 3, wherein: the heat conducting wire (7) comprises a heat conducting main wire (71), a plurality of heat conducting branch wires (72) fixedly connected to the outer end of the heat conducting main wire (71) and a plurality of heat conducting branch wires (73) fixedly connected to the end part of one end, far away from the supporting core (3), of the heat conducting main wire (71), the heat conducting branch wires (72) are located in the hard supporting end (41), and the end part of the heat conducting branch wires (73) is flush with the top part of the hard supporting end (41).

5. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 4, wherein: the outer ends of the heat-conducting main wires (71) and the heat-conducting branch wires (72) are wrapped with heat-insulating layers, and the end parts of the heat-conducting branch wires (72) penetrate through the hard support ends (41) and extend into the air control cavity.

6. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 4, wherein: collection bits end (42) outer end fixedly connected with is from extending the magnetic network, extend the magnetic network from including a plurality ofly with collection bits end (42) fixed connection's radial magnetic tube (82) and a plurality ofly with radial magnetic tube (82) horizontal magnetic tube (81) of weaving each other and being connected, the ball (9) are inhaled to tip fixedly connected with magnetism that collection bits end (42) were kept away from in radial magnetic tube (82).

7. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 6, wherein: the transverse magnetic pipe (81) and the radial magnetic pipe (82) are both flexible hollow structures, and the end parts of the transverse magnetic pipe and the radial magnetic pipe are both fixedly penetrated through the chip collecting end (42) and communicated with the pneumatic control cavity.

8. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 7, wherein: horizontal magnetic tube (81) and radial magnetic tube (82) outer end surface all fixed inlay has a plurality of evenly distributed's magnetism point (10), magnetism point (10) are made for magnetic material.

9. The magnetically-attracted enriched annular workpiece drilling numerical control machine tool of claim 7, wherein: the magnetic attraction ball (9) comprises a hard shell (91) fixedly connected with the radial magnetic pipe (82), a magnetic powder ball (92) placed in the hard shell (91), and a plurality of aluminum alloy wires (93) connected between the magnetic powder ball (92) and the inner wall of the radial magnetic pipe (82).