WO2020134081A1 - Medium nozzle for die steel cutting - Google Patents

Medium nozzle for die steel cutting Download PDF

Info

Publication number
WO2020134081A1
WO2020134081A1 PCT/CN2019/098744 CN2019098744W WO2020134081A1 WO 2020134081 A1 WO2020134081 A1 WO 2020134081A1 CN 2019098744 W CN2019098744 W CN 2019098744W WO 2020134081 A1 WO2020134081 A1 WO 2020134081A1
Authority
WO
WIPO (PCT)
Prior art keywords
medium
cutting
spray head
electrode wire
die steel
Prior art date
Application number
PCT/CN2019/098744
Other languages
French (fr)
Chinese (zh)
Inventor
舒丹
Original Assignee
苏州昕玺包装制品有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州昕玺包装制品有限公司 filed Critical 苏州昕玺包装制品有限公司
Priority to JP2021600008U priority Critical patent/JP3234838U/en
Publication of WO2020134081A1 publication Critical patent/WO2020134081A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/36—Supply or regeneration of working media
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02—Wire-cutting

Definitions

  • the utility model relates to the field of die steel processing equipment, in particular to a medium nozzle for cutting die steel.
  • Die steel is often used to make cold die, hot die or die-casting die, which has greater hardness and is therefore not easy to process. In the cutting process, it is easy to cause the cutting knife to break the knife, the cutting surface is rough, and it is difficult to meet the processing accuracy requirements.
  • the cutting knife acting on it is likely to break the knife, or slip, offset during the cutting process, and the cutting knife or the die steel workpiece to be cut is likely to have a positional deviation during the cutting process .
  • the prior art often uses heat treatment to reduce the difficulty of processing die steel.
  • the die steel itself has thermal fatigue characteristics.
  • the heat treatment during the processing especially the quenching temperature of the heat treatment, will affect the austenite grain size of the cutting surface of the die steel, the solid solubility of the alloy elements, and the uniformity of the workpiece surface structure, which will affect the die The overall thermal fatigue performance of the finished steel workpiece.
  • the cutting surface In the service process of die steel, the cutting surface needs to be subjected to cooling and lubricating treatment during each demolding process. This frequent sudden heat quenching during service will further deteriorate the thermal fatigue performance of the die steel workpiece.
  • the surface of the existing die steel workpiece after cutting is formed by the influence of rapid heat and cold during the processing process, forming a heat-affected layer, the crystal structure of which is dissimilated, and a thermally modified layer is formed inwardly, which affects the stress strength of the workpiece and makes the cut workpiece easy to deform and crack .
  • the purpose of the present invention is to provide a medium spray head for die steel cutting.
  • a media spray head for die steel cutting is proposed, which is fixed to the lower end of a support column of the cutting head, wherein the support column is a hollow structure, and the media spray head is provided on the support column and the cutting
  • a gas-liquid three-way valve is connected to the upper end of the support column for introducing a gas medium or a liquid medium into the hollow structure, the gas medium or liquid medium runs along the hollow inside the support column
  • the structure flows to the media nozzle; the outer surface of the media nozzle is provided with a groove for accommodating the electrode wire, the depth of the groove does not exceed the diameter of the electrode wire, and the inner wall or the outer side of the groove is also provided
  • the gas medium or liquid medium in the hollow structure is led out to the part where the
  • the gas medium includes an inert gas, a sulfur removal gas, a carbon removal gas, or a mixture thereof;
  • the liquid medium is deionized water or an oily medium, and a metal powder is further mixed in the liquid medium, and the metal powder includes iron , Rhenium, titanium, tungsten, manganese, chromium, magnesium, or any combination thereof.
  • the above-mentioned media spray head for die steel cutting wherein the media spray head is a disc-shaped structure, the wheel shaft of which is convex and connected to the lower end of the support column, and the disc-shaped structure is around the connection
  • the radial rotation of the piece; the groove for accommodating the electrode wire is provided in the circumferential direction of the roulette structure, and the direction of the groove is the same as the rotation direction of the medium spray head.
  • the above-mentioned medium spray head for die steel cutting wherein the medium spray head is a sphere or a flat sphere, and a connecting member is provided in the short diameter direction thereof, and the connecting member is connected to the lower end of the support column.
  • the long diameter of the sphere and the flat sphere rotates around the radial direction of the connecting member;
  • the groove for accommodating the electrode wire is provided on the surface of the dielectric nozzle perpendicular to the circumferential direction of the connecting member, and the direction of the groove is The rotation direction of the media nozzle is the same.
  • the through holes or pores are arranged along the rotation direction of the sphere, oblate sphere, or roulette.
  • the above media nozzle for die steel cutting wherein the lower surface of the media nozzle is a flat structure, and different grooves are alternately arranged on the flat structure; the depth of each groove is different, The difference between the depths of the grooves is at least the diameter of the electrode wire.
  • the thickness of the lower surface of the medium spray head is increased at the location where the grooves are interlaced.
  • the thickness of the lower surface of the media nozzle decreases from the middle to the edge.
  • the gas medium sprayed by the medium spray head includes nitrogen, oxygen or a mixture thereof.
  • the gas medium is compressed air.
  • the above-mentioned medium spray head for die steel cutting wherein the liquid powder sprayed by the medium spray head contains nano-level metal powder whose diameter does not exceed 50 nm, and the liquid medium is mixed with the nano Powder suspension.
  • the utility model is provided with a medium spray head with through holes or pores between the support column of the cutting head and the electrode wire, and the medium spray head is the part where the electrode wire contacts the mold steel workpiece to be processed in the cutting state Provide gaseous or liquid media. Therefore, the cutting head of the present invention can use the medium to reduce the austenite formed in the cutting process and reduce the thickness of the metamorphic layer on the cutting surface during the process of wire EDM. Furthermore, the utility model can ensure the mechanical strength and thermal strain performance of the finished cutting surface after cutting through the above process, improve the service life of the cutting surface, and effectively prevent the workpiece from being deformed and cracked.
  • a through hole or a hole for providing a liquid medium or a gas medium is provided in the groove containing the electrode wire, and the gas medium or liquid medium passes through the through hole
  • the wire exerts pressure on the workpiece.
  • the pressure forces the contact strength between the electrode wire and the workpiece or maintains the distance between the two in a relatively stable range, and reduces the effect of electrostatic force and blasting force during the cutting process. And tremor. Therefore, the cut surface of the utility model is smoother and smoother, which can save the processing cost for the subsequent process.
  • the surface of the dielectric nozzle structure can also be provided with grooves of different depths for multiple groups of electrode wires to be bypassed alternately.
  • the electric wires can be superimposed by the interlacing of the electrode wires, and the electric field strength of the electrode wires can be increased due to the relative movement between the electrode wires.
  • it acts on the die steel workpiece for cutting, it can achieve several times the effect of superposition of the electrode wires of each group.
  • the invention can greatly improve the cutting efficiency through the staggered superposition of electrode wires while ensuring the cutting effect.
  • FIG. 1 is a schematic diagram of the overall structure of a cutting head in a cutting processing device according to the present invention
  • FIG. 2 is a schematic view of the structure of the medium nozzle of the roulette structure in the utility model
  • FIG. 3 is a schematic structural diagram of a medium sprinkler with a flat sphere structure in the present invention.
  • FIG. 4 is a schematic view of the structure of a medium nozzle with a "meter" groove in the utility model.
  • the cutting processing equipment for mold steel usually includes:
  • a cutting platform 1 on which a die steel workpiece to be processed is provided, and the cutting platform is used to fix the die steel workpiece to be processed or for the workpiece to move relative to the cutting device 2 on its surface;
  • the cutting device 2 includes a wire walking mechanism and an electrode wire.
  • the wire walking mechanism includes a plurality of axles that drive the electrode wire to reciprocate or move in one direction, thereby making the electrode wire of the cutting head portion relatively to the to-be-processed Mold steel workpiece movement.
  • the electrode ribbon is charged, and the electrode wire is discharged between the mold steel workpiece to be processed, generating electrostatic force and explosive force to remove the surface of the mold steel workpiece to be processed that is in contact with the electrode wire Location
  • the protection device 4 is coated on the outside of the cutting device 2 to avoid sparks or metal debris generated during the cutting process.
  • a gas supply or liquid supply pipe can also be connected inside the protection device, and the liquid supply pipe sprays liquid on the surface of the workpiece at the cutting position to keep the temperature stable during the cutting process.
  • the gas supply pipeline outputs a specific gas to the surface of the workpiece at the cutting site to ensure the cutting effect.
  • the support column 21 of the fixed cutting head is provided as a hollow structure, and a media spray head 24 is connected to the lower end thereof.
  • the medium spray head 24 is disposed between the support column and the electrode wire.
  • the upper end of the support column 21 is connected with a gas-liquid three-way valve 25 for introducing a gas medium or a liquid medium into the hollow structure.
  • the gas medium or the liquid medium flows along the hollow structure inside the support column 21 to the medium spray head 24.
  • the outer surface of the medium nozzle 24 is provided with a groove for accommodating the electrode wire 23, the depth of the groove does not exceed the diameter of the electrode wire 23, and the inner wall or the outer side of the groove is further provided with a through hole 26 Or a hole, the through hole 26 or the hole is at least partially in contact with the gas medium or liquid medium contained in the hollow structure inside the support column 21; in the cut state, the through hole 26 or the hole is in the phase of the electrode wire 23 During the movement of the mold steel workpiece to be processed, the gas medium or the liquid medium in the hollow structure is led out to the part where the surface of the electrode wire 23 contacts the mold steel workpiece to be processed; or The holes 26 or pores lead out the gas medium or liquid medium in the hollow structure and coat the surface of the electrode wire 23.
  • the above-mentioned medium nozzle 24 is a sphere, a flat sphere, or a roulette-shaped structure, and a connecting member 27 is provided in the diameter direction thereof, the connecting member and the lower end of the support column 21 Connection, the sphere, flat sphere or roulette-shaped structure rotates around the radial direction of the connecting member 27; the groove accommodating the electrode wire 23 is provided on the surface of the medium spray head 24 perpendicular to the circumference of the connecting member 27 Upwards, the direction of the groove is the same as the direction of rotation of the medium nozzle 24; the through holes 26 or holes are arranged along the rotation direction of the sphere, oblate sphere, or roulette.
  • the lower surface is a flat structure, and different grooves are alternately arranged on the flat structure; the depths of the grooves are different, and the difference between the depths of the grooves is at least the diameter of the electrode wire 23.
  • the grooves are staggered in a "meter" shape, and the thickness of the lower surface of the media nozzle 24 at the portion where the grooves are staggered increases.
  • the utility model can perform electric spark cutting under special medium after pretreatment of the mold steel workpiece to be processed.
  • the electrode wire 23 is driven to move relative to the mold steel workpiece to be processed. In the cutting state, the electrode wire and the mold steel workpiece to be processed are discharged to erode the surface of the mold steel workpiece to be processed and the electrode wire Contact area
  • a gas medium is synchronously supplied to the part where the surface of the electrode wire 23 contacts the mold steel workpiece to be processed;
  • the gas medium includes nitrogen, oxygen, compressed air, or the like mixture;
  • the liquid medium is synchronously supplied to the part of the surface of the electrode wire 23 that contacts the mold steel workpiece to be processed; the liquid medium is deionized water or an oily medium.
  • Metal powder with a diameter of less than 50 nanometers is also mixed in the liquid medium, and the metal powder includes any one of iron, rhenium, titanium, tungsten, manganese, chromium, and magnesium, or a mixture thereof.
  • the utility model applies electrostatic force and blasting force to the die steel on the surface of the workpiece under the action of cutting electric sparks to locally melt it
  • the dissolved sulfide and carbon impurities can be oxidized by the introduced oxygen, and then by nitrogen or inert gas.
  • the above-mentioned dielectric nozzle directly introduces a liquid medium containing nano metal at the cutting point, the nano powder interacts with the electrode wire, and it is embedded between the crystals during the restoration of the rigidity of the molten metal on the cutting surface. , Forming a new dense protective layer on the cutting surface.
  • the protective layer is polarized by the above-mentioned metal powder through electromagnetic excitation and fused into the surface of the austenite or metamorphic layer formed by the cutting action. Due to the fusion effect of the nano-sized metal particles, the remelting of the austenite or metamorphic layer is caused The physical properties of the layer change, greatly improving the hardness and brittleness of the cutting surface, making it difficult to deform and crack.
  • the present invention also provides a temperature sensor at a portion where the surface of the guide wheel of the wire walking mechanism 22 contacts the electrode wire 23.
  • the electrode wire 23 is bypassed by the guide wheel, and the temperature sensor on the guide wheel can detect the temperature of the electrode wire 23, and determine the melting point temperature status by the temperature of the electrode wire.
  • the opening of the gas-liquid three-way valve 25 is expanded, and the flow rate of the gas medium or liquid medium drawn from the through hole 26 or the pore is increased to take away excess heat .
  • the temperature of the electrode wire at the cutting point after the auxiliary cooling of the liquid or gas medium reaches the position of the guide wheel is generally between 240 and 300 °C, and the corresponding melting point temperature is more suitable for the stable formation and maintenance of the remelted layer structure.
  • the above process also depends on the pretreatment of the workpiece.
  • the steps include: the first step, heat treating the die steel workpiece to be processed to a critical temperature or above; the second step, slowly annealing the heat-treated die steel workpiece to 250°C at an annealing rate not exceeding 30°C per hour. Slow annealing can keep the overall performance of the workpiece stable and further prevent cracking and deformation during cutting. The reason is that before cutting, the rate of cooling and heating of the workpiece surface to the center is inconsistent, and the temperature difference will produce non-uniform expansion within the mechanism, resulting in an uneven internal stress.
  • the temperature difference between the cutting point and the metal increases, and the above-mentioned unbalanced stress further acts to increase the tensile stress near the cutting point, resulting in fracture of the cutting surface.
  • Slow annealing can keep the temperature of the internal and external surfaces of the metal tend to be consistent, which can effectively reduce the above stress and improve the cutting effect.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

A medium nozzle for die steel cutting. According to the present utility model, a medium nozzle having a through hole or a pore is provided between a support column of a cutting head and an electrode wire, and the medium nozzle provides a gas medium or a liquid medium to a part where the electrode wire is in contact with a die steel workpiece to be machined under a cutting state. Therefore, in a process that the cutting head provided with the medium nozzle of the present utility model performs wire electric discharge cutting, austenite formed in the cutting process can be reduced by using the medium, and the thickness of a deformed layer of a cut surface can be reduced. Furthermore, according to the present utility model, the mechanical strength and thermal strain performance of the cut surface of a cut finished product can be ensured by means of the process; the service life of the cut surface is prolonged; deformation and cracking of the workpiece are effectively prevented; and the cutting precision is improved.

Description

一种用于模具钢切割的介质喷头A medium nozzle for cutting die steel 技术领域Technical field
本实用新型涉及模具钢加工设备领域，尤其涉及一种用于模具钢切割的介质喷头。The utility model relates to the field of die steel processing equipment, in particular to a medium nozzle for cutting die steel.
背景技术Background technique
模具钢常用于制造冷冲模、热冲模或压铸模，其具有较大的硬度，因而不易加工。切割过程中，易造成切割刀断刀，切割面粗糙，难以符合加工精度要求。Die steel is often used to make cold die, hot die or die-casting die, which has greater hardness and is therefore not easy to process. In the cutting process, it is easy to cause the cutting knife to break the knife, the cutting surface is rough, and it is difficult to meet the processing accuracy requirements.
由于模具钢本身硬度较高，切割过程中，作用于其上的切割刀容易断刀，或者打滑，偏移，切割刀或待切割的模具钢工件之间易在切割过程中产生位置的偏移。Due to the high hardness of the die steel itself, the cutting knife acting on it is likely to break the knife, or slip, offset during the cutting process, and the cutting knife or the die steel workpiece to be cut is likely to have a positional deviation during the cutting process .
为方便切割，现有技术经常采用热处理的方式降低模具钢加工难度。然而模具钢本身具有热疲劳特性，加工过程中的热处理，尤其热处理淬火温度会影响模具钢切割面的奥氏体晶粒大小、合金元素的固溶度以及工件表面的组织均匀性，进而影响模具钢工件成品的整体的热疲劳性能。In order to facilitate cutting, the prior art often uses heat treatment to reduce the difficulty of processing die steel. However, the die steel itself has thermal fatigue characteristics. The heat treatment during the processing, especially the quenching temperature of the heat treatment, will affect the austenite grain size of the cutting surface of the die steel, the solid solubility of the alloy elements, and the uniformity of the workpiece surface structure, which will affect the die The overall thermal fatigue performance of the finished steel workpiece.
在模具钢服役过程中，其切割面还需在每次脱模的过程中经受冷却、润滑处理，其服役过程中这种频繁的骤热骤冷作用会进一步恶化模具钢工件的热疲劳性能。现有模具钢工件切割后的表面由于加工过程中急热急冷的影响，形成热影响层，其结晶结构异化，向内形成热变质层，影响工件应力强度，使切割后的工件易变形、开裂。In the service process of die steel, the cutting surface needs to be subjected to cooling and lubricating treatment during each demolding process. This frequent sudden heat quenching during service will further deteriorate the thermal fatigue performance of the die steel workpiece. The surface of the existing die steel workpiece after cutting is formed by the influence of rapid heat and cold during the processing process, forming a heat-affected layer, the crystal structure of which is dissimilated, and a thermally modified layer is formed inwardly, which affects the stress strength of the workpiece and makes the cut workpiece easy to deform and crack .
实用新型内容Utility model content
为了解决现有技术存在的不足，本实用新型的目的在于提供一种用于模具钢切割的介质喷头。In order to solve the shortcomings in the prior art, the purpose of the present invention is to provide a medium spray head for die steel cutting.
首先，为实现上述目的，提出一种用于模具钢切割的介质喷头，固定于切割头的支撑柱下端，其中，所述支撑柱为中空结构，所述介质喷头设置在所述支撑柱和切割头的电极丝之间，所述支撑柱的上端连接有气液三通阀用于向所述中空结构内导入气 体介质或液体介质，所述气体介质或液体介质沿所述支撑柱内部的中空结构流向所述介质喷头；所述介质喷头的外表面设置有容纳所述电极丝的凹槽，所述凹槽的深度不超过所述电极丝的直径，所述凹槽的内壁或外侧还设置有通孔或孔隙，所述通孔或孔隙至少部分地与所述支撑柱内部中空结构所容纳的气体介质或液体介质接触；切割状态下，所述通孔或孔隙在所述电极丝相对待加工的模具钢工件运动的过程中，将所述中空结构内的气体介质或液体介质引出至所述电极丝的表面与所述待加工的模具钢工件相接触的部位；或者所述通孔或孔隙将所述中空结构内的气体介质或液体介质引出并包覆于所述电极丝的表面。其中，所述气体介质包括惰性气体、除硫气体、除碳气体或其混合物；所述液体介质为去离子水或油性介质，所述液体介质内还混合有金属粉末，所述金属粉末包括铁、铼、钛、钨、锰、铬、镁中的任一中或其混合。First, in order to achieve the above object, a media spray head for die steel cutting is proposed, which is fixed to the lower end of a support column of the cutting head, wherein the support column is a hollow structure, and the media spray head is provided on the support column and the cutting Between the electrode wires of the head, a gas-liquid three-way valve is connected to the upper end of the support column for introducing a gas medium or a liquid medium into the hollow structure, the gas medium or liquid medium runs along the hollow inside the support column The structure flows to the media nozzle; the outer surface of the media nozzle is provided with a groove for accommodating the electrode wire, the depth of the groove does not exceed the diameter of the electrode wire, and the inner wall or the outer side of the groove is also provided There are through holes or pores at least partially in contact with the gas medium or liquid medium contained in the hollow structure inside the support column; in the cut state, the through holes or pores are opposite to the electrode wire During the movement of the processed mold steel workpiece, the gas medium or liquid medium in the hollow structure is led out to the part where the surface of the electrode wire contacts the mold steel workpiece to be processed; or the through hole or The pores lead out the gas medium or liquid medium in the hollow structure and coat the surface of the electrode wire. Wherein, the gas medium includes an inert gas, a sulfur removal gas, a carbon removal gas, or a mixture thereof; the liquid medium is deionized water or an oily medium, and a metal powder is further mixed in the liquid medium, and the metal powder includes iron , Rhenium, titanium, tungsten, manganese, chromium, magnesium, or any combination thereof.
可选的，上述的用于模具钢切割的介质喷头，其中所述介质喷头为轮盘状结构，其轮轴凸起并与所述支撑柱的下端连接，所述轮盘状结构绕所述连接件的径向转动；容纳所述电极丝的凹槽设置于所述轮盘结构的周向上，所述凹槽的方向与所述介质喷头转动的方向相同。Optionally, the above-mentioned media spray head for die steel cutting, wherein the media spray head is a disc-shaped structure, the wheel shaft of which is convex and connected to the lower end of the support column, and the disc-shaped structure is around the connection The radial rotation of the piece; the groove for accommodating the electrode wire is provided in the circumferential direction of the roulette structure, and the direction of the groove is the same as the rotation direction of the medium spray head.
可选的，上述的用于模具钢切割的介质喷头，其中，所述介质喷头为球体、扁球体，其短直径方向设置有连接件，所述连接件与所述支撑柱的下端连接，所述球体、扁球体的长直径绕所述连接件的径向转动；容纳所述电极丝的凹槽设置于所述介质喷头表面垂直于所述连接件的周向上，所述凹槽的方向与所述介质喷头转动的方向相同。Optionally, the above-mentioned medium spray head for die steel cutting, wherein the medium spray head is a sphere or a flat sphere, and a connecting member is provided in the short diameter direction thereof, and the connecting member is connected to the lower end of the support column. The long diameter of the sphere and the flat sphere rotates around the radial direction of the connecting member; the groove for accommodating the electrode wire is provided on the surface of the dielectric nozzle perpendicular to the circumferential direction of the connecting member, and the direction of the groove is The rotation direction of the media nozzle is the same.
可选的，上述的用于模具钢切割的介质喷头，其中，所述通孔或孔隙沿所述球体、扁球体或轮盘状的转动方向排布。Optionally, in the above-mentioned medium spray head for die steel cutting, the through holes or pores are arranged along the rotation direction of the sphere, oblate sphere, or roulette.
可选的，上述的用于模具钢切割的介质喷头，其中，所述介质喷头的下表面为扁平结构，所述扁平结构上交错的设置有不同凹槽；所述各凹槽的深度不同，所述各凹 槽的深度的差值至少为所述电极丝的直径。Optionally, the above media nozzle for die steel cutting, wherein the lower surface of the media nozzle is a flat structure, and different grooves are alternately arranged on the flat structure; the depth of each groove is different, The difference between the depths of the grooves is at least the diameter of the electrode wire.
可选的，上述的用于模具钢切割的介质喷头，其中，在所述凹槽交错的部位所述介质喷头的下表面厚度增加。Optionally, in the above-mentioned medium spray head for die steel cutting, the thickness of the lower surface of the medium spray head is increased at the location where the grooves are interlaced.
可选的，上述的用于模具钢切割的介质喷头，其中，在所述凹槽交错为“米”字形，所述介质喷头的下表面的厚度由中间向边缘递减。Optionally, in the above-mentioned media nozzle for die steel cutting, wherein the grooves are staggered in a "meter" shape, the thickness of the lower surface of the media nozzle decreases from the middle to the edge.
所述介质喷头喷出的气体介质包括氮气、氧气或其混合物。或者，所述气体介质为压缩空气。The gas medium sprayed by the medium spray head includes nitrogen, oxygen or a mixture thereof. Alternatively, the gas medium is compressed air.
可选的，上述的用于模具钢切割的介质喷头，其中，所述介质喷头喷出的液体粉末里包含有纳米级别的金属粉末，其直径不超过50nm，所述液体介质为混合所述纳米粉末的悬浊液。Optionally, the above-mentioned medium spray head for die steel cutting, wherein the liquid powder sprayed by the medium spray head contains nano-level metal powder whose diameter does not exceed 50 nm, and the liquid medium is mixed with the nano Powder suspension.
有益效果Beneficial effect
本实用新型通过在切割头的支撑柱与电极丝之间设置带有通孔或孔隙的介质喷头，通过该介质喷头在切割状态下为所述电极丝与待加工的模具钢工件相接触的部位提供气体介质或液体介质。由此，本实用新型的切割头在进行电火花线切割的过程中，可利用介质降低切割过程中所形成的奥氏体，减少切割面变质层厚度。进而，本实用新型通过上述的工艺可保证切割后成品切割面的机械强度和热应变性能，提高切割面使用寿命，有效防止工件变形、开裂。The utility model is provided with a medium spray head with through holes or pores between the support column of the cutting head and the electrode wire, and the medium spray head is the part where the electrode wire contacts the mold steel workpiece to be processed in the cutting state Provide gaseous or liquid media. Therefore, the cutting head of the present invention can use the medium to reduce the austenite formed in the cutting process and reduce the thickness of the metamorphic layer on the cutting surface during the process of wire EDM. Furthermore, the utility model can ensure the mechanical strength and thermal strain performance of the finished cutting surface after cutting through the above process, improve the service life of the cutting surface, and effectively prevent the workpiece from being deformed and cracked.
此外，由于本实用新型特殊的介质喷头结构，其在容纳电极丝的凹槽内设置向外提供液体介质或气体介质的通孔或孔隙，气体介质或液体介质通过该通孔的过程中对电极丝施加有向工件的压力，压力迫使电极丝与工件之间的接触强度或使两者之间的距离维持在相对稳定的范围内，而减小其收切割过程中静电力和***力的作用而震颤。由此，本实用新型切割后的表面更为光滑平整，可为后续工艺节约加工成本。In addition, due to the special medium nozzle structure of the present invention, a through hole or a hole for providing a liquid medium or a gas medium is provided in the groove containing the electrode wire, and the gas medium or liquid medium passes through the through hole The wire exerts pressure on the workpiece. The pressure forces the contact strength between the electrode wire and the workpiece or maintains the distance between the two in a relatively stable range, and reduces the effect of electrostatic force and blasting force during the cutting process. And tremor. Therefore, the cut surface of the utility model is smoother and smoother, which can save the processing cost for the subsequent process.
并且，本实用新型中，所述的介质喷头结构的表面还可通过不同深度的凹槽供多组电极丝交错的绕过。由此，可通过电极丝的交错，使得电极丝之间的电荷叠加，并由于电极丝之间的相对运动而增加其电场场强。其作用于模具钢工件进行切割时，可达到数倍于各组电极丝叠加的作用效果。本发明能够在保障切割效果的同时，通过电极丝的交错叠加作用大大提高切割效率。In addition, in the present invention, the surface of the dielectric nozzle structure can also be provided with grooves of different depths for multiple groups of electrode wires to be bypassed alternately. Thereby, the electric wires can be superimposed by the interlacing of the electrode wires, and the electric field strength of the electrode wires can be increased due to the relative movement between the electrode wires. When it acts on the die steel workpiece for cutting, it can achieve several times the effect of superposition of the electrode wires of each group. The invention can greatly improve the cutting efficiency through the staggered superposition of electrode wires while ensuring the cutting effect.
本实用新型的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本实用新型而了解。Other features and advantages of the present invention will be explained in the subsequent description, and partly become obvious from the description, or be understood by implementing the present invention.
附图说明BRIEF DESCRIPTION
附图用来提供对本实用新型的进一步理解，并且构成说明书的一部分，并与本实用新型的实施例一起，用于解释本实用新型，并不构成对本实用新型的限制。在附图中：The drawings are used to provide a further understanding of the utility model and form part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
图1为根据本实用新型的切割加工装置中切割头的整体结构示意；1 is a schematic diagram of the overall structure of a cutting head in a cutting processing device according to the present invention;
图2为本实用新型中轮盘结构的介质喷头的结构示意图；2 is a schematic view of the structure of the medium nozzle of the roulette structure in the utility model;
图3为本实用新型中扁球体结构的介质喷头的结构示意图；FIG. 3 is a schematic structural diagram of a medium sprinkler with a flat sphere structure in the present invention;
图4为本实用新型中“米”字形凹槽的介质喷头的结构示意图。4 is a schematic view of the structure of a medium nozzle with a "meter" groove in the utility model.
具体实施方式detailed description
以下结合附图对本实用新型的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本实用新型，并不用于限定本实用新型。The preferred embodiments of the present invention will be described below in conjunction with the drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
针对模具钢的切割加工装置通常包括：The cutting processing equipment for mold steel usually includes:
切割平台1，其上面设置有待加工的模具钢工件，所述切割平台用于固定所述待加工的模具钢工件，或者供所述工件在其表面相对所述切割装置2移动；A cutting platform 1 on which a die steel workpiece to be processed is provided, and the cutting platform is used to fix the die steel workpiece to be processed or for the workpiece to move relative to the cutting device 2 on its surface;
切割装置2，包括走丝机构和电极丝，所述走丝机构包括若干轮轴，轮轴驱动所述 电极丝往复运动或单向运动，从而，使得切割刀头部位的电极丝相对所述待加工的模具钢工件运动。在切割状态下，所述电极丝带有电荷，电极丝与待加工的模具钢工件之间放电，产生静电力和***力以蚀除所述待加工的模具钢工件表面与所述电极丝接触的部位；The cutting device 2 includes a wire walking mechanism and an electrode wire. The wire walking mechanism includes a plurality of axles that drive the electrode wire to reciprocate or move in one direction, thereby making the electrode wire of the cutting head portion relatively to the to-be-processed Mold steel workpiece movement. In the cutting state, the electrode ribbon is charged, and the electrode wire is discharged between the mold steel workpiece to be processed, generating electrostatic force and explosive force to remove the surface of the mold steel workpiece to be processed that is in contact with the electrode wire Location
保护装置4，其包覆于所述切割装置2的外部，切割过程所产生的避免电火花或金属碎屑飞溅。保护装置内部还可连接有供气或供液管道，供液管道向切割部位的工件表面喷淋液体使其在切割过程中温度保持稳定。供气管道向切割部位的工件表面输出特定的气体，以保证切割效果。The protection device 4 is coated on the outside of the cutting device 2 to avoid sparks or metal debris generated during the cutting process. A gas supply or liquid supply pipe can also be connected inside the protection device, and the liquid supply pipe sprays liquid on the surface of the workpiece at the cutting position to keep the temperature stable during the cutting process. The gas supply pipeline outputs a specific gas to the surface of the workpiece at the cutting site to ensure the cutting effect.
参考图1所示，本实用新型的中将固定切割头的支撑柱21设置为中空结构，其下端连接有介质喷头24。所述介质喷头24设置在所述支撑柱和所述电极丝之间，所述支撑柱21的上端连接有气液三通阀25用于向所述中空结构内导入气体介质或液体介质，所述气体介质或液体介质沿所述支撑柱21内部的中空结构流向所述介质喷头24。所述介质喷头24的外表面设置有容纳所述电极丝23的凹槽，所述凹槽的深度不超过所述电极丝23的直径，所述凹槽的内壁或外侧还设置有通孔26或孔隙，所述通孔26或孔隙至少部分地与所述支撑柱21内部中空结构所容纳的气体介质或液体介质接触；切割状态下，所述通孔26或孔隙在所述电极丝23相对待加工的模具钢工件运动的过程中，将所述中空结构内的气体介质或液体介质引出至所述电极丝23的表面与所述待加工的模具钢工件相接触的部位；或者所述通孔26或孔隙将所述中空结构内的气体介质或液体介质引出并包覆于所述电极丝23的表面。Referring to FIG. 1, in the present invention, the support column 21 of the fixed cutting head is provided as a hollow structure, and a media spray head 24 is connected to the lower end thereof. The medium spray head 24 is disposed between the support column and the electrode wire. The upper end of the support column 21 is connected with a gas-liquid three-way valve 25 for introducing a gas medium or a liquid medium into the hollow structure. The gas medium or the liquid medium flows along the hollow structure inside the support column 21 to the medium spray head 24. The outer surface of the medium nozzle 24 is provided with a groove for accommodating the electrode wire 23, the depth of the groove does not exceed the diameter of the electrode wire 23, and the inner wall or the outer side of the groove is further provided with a through hole 26 Or a hole, the through hole 26 or the hole is at least partially in contact with the gas medium or liquid medium contained in the hollow structure inside the support column 21; in the cut state, the through hole 26 or the hole is in the phase of the electrode wire 23 During the movement of the mold steel workpiece to be processed, the gas medium or the liquid medium in the hollow structure is led out to the part where the surface of the electrode wire 23 contacts the mold steel workpiece to be processed; or The holes 26 or pores lead out the gas medium or liquid medium in the hollow structure and coat the surface of the electrode wire 23.
在图2或图3所示的实现方式下，上述的介质喷头24为球体、扁球体或轮盘状结构，其直径方向设置有连接件27，所述连接件与所述支撑柱21的下端连接，所述球体、扁球体或轮盘状结构绕所述连接件27的径向转动；容纳所述电极丝23的凹槽设置于 所述介质喷头24表面垂直于所述连接件27的周向上，所述凹槽的方向与所述介质喷头24转动的方向相同；所述通孔26或孔隙沿所述球体、扁球体或轮盘状的转动方向排布。In the implementation shown in FIG. 2 or FIG. 3, the above-mentioned medium nozzle 24 is a sphere, a flat sphere, or a roulette-shaped structure, and a connecting member 27 is provided in the diameter direction thereof, the connecting member and the lower end of the support column 21 Connection, the sphere, flat sphere or roulette-shaped structure rotates around the radial direction of the connecting member 27; the groove accommodating the electrode wire 23 is provided on the surface of the medium spray head 24 perpendicular to the circumference of the connecting member 27 Upwards, the direction of the groove is the same as the direction of rotation of the medium nozzle 24; the through holes 26 or holes are arranged along the rotation direction of the sphere, oblate sphere, or roulette.
参考图4所示的介质喷头结构。其下表面为扁平结构，所述扁平结构上交错的设置有不同凹槽；所述各凹槽的深度不同，所述各凹槽的深度的差值至少为所述电极丝23的直径。所述凹槽交错为“米”字形，在所述凹槽交错的部位所述介质喷头24的下表面厚度增加。由此切割时，可通过电极丝的交错，使得电极丝之间的电荷叠加，并由于电极丝之间的相对运动而增加其电场场强。其作用于模具钢工件进行切割时，可达到数倍于各组电极丝叠加的作用效果。本发明能够在保障切割效果的同时，通过电极丝的交错叠加作用大大提高切割效率。Refer to the structure of the media nozzle shown in FIG. 4. The lower surface is a flat structure, and different grooves are alternately arranged on the flat structure; the depths of the grooves are different, and the difference between the depths of the grooves is at least the diameter of the electrode wire 23. The grooves are staggered in a "meter" shape, and the thickness of the lower surface of the media nozzle 24 at the portion where the grooves are staggered increases. When cutting by this way, the electric wires can be superimposed by the interlacing of the electrode wires, and the electric field strength of the electrode wires can be increased due to the relative movement between the electrode wires. When it acts on the die steel workpiece for cutting, it can achieve several times the effect of superposition of the electrode wires of each group. The invention can greatly improve the cutting efficiency through the staggered superposition of electrode wires while ensuring the cutting effect.
通过上述的切割头，本实用新型可以在对待加工的模具钢工件预处理之后，对其进行特殊介质下的电火花切割。切割过程中：Through the above-mentioned cutting head, the utility model can perform electric spark cutting under special medium after pretreatment of the mold steel workpiece to be processed. During cutting:
驱动电极丝23相对待加工的所述模具钢工件运动，切割状态下，所述电极丝与待加工的模具钢工件之间放电，蚀除所述待加工的模具钢工件表面与所述电极丝接触的部位；The electrode wire 23 is driven to move relative to the mold steel workpiece to be processed. In the cutting state, the electrode wire and the mold steel workpiece to be processed are discharged to erode the surface of the mold steel workpiece to be processed and the electrode wire Contact area
在第1至2次切割时，同步的向所述电极丝23的表面与所述待加工的模具钢工件相接触的部位提供气体介质；所述的气体介质包括氮气、氧气、压缩空气或其混合物；During the 1st to 2nd cutting, a gas medium is synchronously supplied to the part where the surface of the electrode wire 23 contacts the mold steel workpiece to be processed; the gas medium includes nitrogen, oxygen, compressed air, or the like mixture;
在第3次切割直至最后依次切割时，同步的向所述电极丝23的表面与所述待加工的模具钢工件相接触的部位提供液体介质；所述液体介质为去离子水或油性介质，所述液体介质内还混合有直径在50纳米以内金属粉末，所述金属粉末包括铁、铼、钛、钨、锰、铬、镁中的任一中或其混合。During the third cutting to the final cutting, the liquid medium is synchronously supplied to the part of the surface of the electrode wire 23 that contacts the mold steel workpiece to be processed; the liquid medium is deionized water or an oily medium. Metal powder with a diameter of less than 50 nanometers is also mixed in the liquid medium, and the metal powder includes any one of iron, rhenium, titanium, tungsten, manganese, chromium, and magnesium, or a mixture thereof.
由此，本实用新型在切割的电火花作用下，对工件表面模具钢施加静电力和*** 力使其局部熔融时，能够通过导入的氧气氧化溶出的硫化物以及碳杂质，通过氮气或惰性气体保护金属不受影响。再进一步切割的过程中，由于上述的介质喷头直接在切割点处引入了含有纳米金属的液体介质，该纳米粉末与电极丝电荷作用，在切割面熔融金属恢复刚性的过程中，嵌入晶体之间，在所述切割面上形成新的致密保护层。该保护层由上述金属粉末经电磁激励极化后，融合入切割作用所形成的奥氏体或变质层表面，纳米级金属颗粒由于该融合作用，使得奥氏体或变质层所形成的重熔层物理性质改变，极大的改善切割面的硬度和脆性，使其不易变形开裂。Therefore, when the utility model applies electrostatic force and blasting force to the die steel on the surface of the workpiece under the action of cutting electric sparks to locally melt it, the dissolved sulfide and carbon impurities can be oxidized by the introduced oxygen, and then by nitrogen or inert gas. Protect the metal from being affected. In the process of further cutting, because the above-mentioned dielectric nozzle directly introduces a liquid medium containing nano metal at the cutting point, the nano powder interacts with the electrode wire, and it is embedded between the crystals during the restoration of the rigidity of the molten metal on the cutting surface. , Forming a new dense protective layer on the cutting surface. The protective layer is polarized by the above-mentioned metal powder through electromagnetic excitation and fused into the surface of the austenite or metamorphic layer formed by the cutting action. Due to the fusion effect of the nano-sized metal particles, the remelting of the austenite or metamorphic layer is caused The physical properties of the layer change, greatly improving the hardness and brittleness of the cutting surface, making it difficult to deform and crack.
为进一步保证上述金属之间的融合过程不受外部环境干扰，上述融合过程需在去离子水或油性介质的封闭状态下进行，并且，过程中需要保证熔融点温度稳定。为达到该目的，本实用新型还在所述走丝机构22的导轮表面与所述电极丝23接触的部位设有温度传感器。电极丝23由所述导轮上绕过，所述导轮上温度传感器可检测到所述电极丝23的温度，通过电极丝的温度判断熔融点温度状况。在所述电极丝23的温度超过预设值时扩大所述气液三通阀25的开度，增加由所述通孔26或孔隙引出的气体介质或液体介质的流量以带走多余的热量。In order to further ensure that the fusion process between the above metals is not disturbed by the external environment, the above fusion process needs to be performed in a closed state of deionized water or an oily medium, and the temperature of the melting point needs to be stable during the process. In order to achieve this purpose, the present invention also provides a temperature sensor at a portion where the surface of the guide wheel of the wire walking mechanism 22 contacts the electrode wire 23. The electrode wire 23 is bypassed by the guide wheel, and the temperature sensor on the guide wheel can detect the temperature of the electrode wire 23, and determine the melting point temperature status by the temperature of the electrode wire. When the temperature of the electrode wire 23 exceeds a preset value, the opening of the gas-liquid three-way valve 25 is expanded, and the flow rate of the gas medium or liquid medium drawn from the through hole 26 or the pore is increased to take away excess heat .
经过计算实验，切割点的电极丝经上述液体或气体介质辅助冷却后到达导轮位置的温度一般在240～300℃之间，其对应的熔融点温度较为适宜上述重熔层结构稳定成型并保持适当的刚度。将传感器判断的电极丝温度的预设值设置为300℃能够得到性能最优的切割面，温度再上升，其性能衰退，不再具备明显优势。After calculation experiments, the temperature of the electrode wire at the cutting point after the auxiliary cooling of the liquid or gas medium reaches the position of the guide wheel is generally between 240 and 300 ℃, and the corresponding melting point temperature is more suitable for the stable formation and maintenance of the remelted layer structure. Appropriate stiffness. Setting the preset value of the electrode wire temperature judged by the sensor to 300°C can obtain the cutting surface with the best performance. If the temperature rises again, its performance declines and no longer has obvious advantages.
上述处理过程还依赖于对工件的预处理。其步骤包括：第一步，对待加工的模具钢工件热处理至临界温度或以上；第二步，对热处理后的所述模具钢工件缓慢退火至250℃，退火速率不超过30℃每小时。缓慢退火能够保持工件整体性能稳定，进一步防止切割过程中开裂变形。其原因在于，切割前，工件表面至中心冷热速率不一致，温 度差会在其机构内产生非均匀的膨胀导致内应力的不均衡。加工过程中，切割点与金属内部温差加剧，上述非均衡的应力进一步作用，使得切割点附近拉应力加剧，导致切割面断裂。而缓慢退火则可保持金属内部与外部表面温度趋于一致，可有效降低上述应力作用，提升切割效果。The above process also depends on the pretreatment of the workpiece. The steps include: the first step, heat treating the die steel workpiece to be processed to a critical temperature or above; the second step, slowly annealing the heat-treated die steel workpiece to 250°C at an annealing rate not exceeding 30°C per hour. Slow annealing can keep the overall performance of the workpiece stable and further prevent cracking and deformation during cutting. The reason is that before cutting, the rate of cooling and heating of the workpiece surface to the center is inconsistent, and the temperature difference will produce non-uniform expansion within the mechanism, resulting in an uneven internal stress. During the processing, the temperature difference between the cutting point and the metal increases, and the above-mentioned unbalanced stress further acts to increase the tensile stress near the cutting point, resulting in fracture of the cutting surface. Slow annealing can keep the temperature of the internal and external surfaces of the metal tend to be consistent, which can effectively reduce the above stress and improve the cutting effect.
本领域普通技术人员可以理解：以上所述仅为本实用新型的优选实施例而已，并不用于限制本实用新型，尽管参照前述实施例对本实用新型进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。A person of ordinary skill in the art may understand that the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art In general, it can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims (7)

  1. 一种用于模具钢切割的介质喷头，其特征在于，固定于切割头的支撑柱(21)下端，所述支撑柱(21)为中空结构，所述介质喷头(24)设置在所述支撑柱和切割头的电极丝之间，所述支撑柱(21)的上端连接有气液三通阀(25)用于向所述中空结构内导入气体介质或液体介质，所述气体介质或液体介质沿所述支撑柱(21)内部的中空结构流向所述介质喷头(24)；A medium spray head for die steel cutting, characterized in that it is fixed to the lower end of a support column (21) of the cutting head, the support column (21) is a hollow structure, and the medium spray head (24) is provided on the support Between the column and the electrode wire of the cutting head, an upper end of the support column (21) is connected with a gas-liquid three-way valve (25) for introducing a gas medium or liquid medium into the hollow structure, the gas medium or liquid The medium flows along the hollow structure inside the support column (21) to the medium nozzle (24);
    所述介质喷头(24)的外表面设置有容纳所述电极丝(23)的凹槽，所述凹槽的深度不超过所述电极丝(23)的直径，所述凹槽的内壁或外侧还设置有通孔(26)或孔隙，所述通孔(26)或孔隙至少部分地与所述支撑柱(21)内部中空结构所容纳的气体介质或液体介质接触；The outer surface of the medium nozzle (24) is provided with a groove for accommodating the electrode wire (23), the depth of the groove does not exceed the diameter of the electrode wire (23), the inner wall or the outer side of the groove A through hole (26) or an aperture is also provided, the through hole (26) or the aperture being at least partially in contact with the gas medium or liquid medium contained in the hollow structure inside the support column (21);
    切割状态下，所述通孔(26)或孔隙在所述电极丝(23)相对待加工的模具钢工件运动的过程中，将所述中空结构内的气体介质或液体介质引出至所述电极丝(23)的表面与所述待加工的模具钢工件相接触的部位；或者所述通孔(26)或孔隙将所述中空结构内的气体介质或液体介质引出并包覆于所述电极丝(23)的表面。In the cutting state, during the movement of the electrode wire (23) relative to the mold steel workpiece to be processed, the through hole (26) or the pore leads the gas medium or liquid medium in the hollow structure to the electrode The part where the surface of the wire (23) is in contact with the mold steel workpiece to be processed; or the through hole (26) or the pore leads the gas medium or liquid medium in the hollow structure to be drawn out and coated on the electrode The surface of the wire (23).
  2. 如权利要求1所述的用于模具钢切割的介质喷头，其特征在于，所述The medium spray head for die steel cutting according to claim 1, characterized in that
    介质喷头(24)为轮盘状结构，其轮轴凸起并与所述支撑柱(21)的下端连接，所述轮盘状结构绕所述连接件(27)的径向转动；The medium nozzle (24) is a wheel-shaped structure, the wheel shaft of which is convex and connected to the lower end of the support column (21), and the wheel-shaped structure rotates around the radial direction of the connecting member (27);
    容纳所述电极丝(23)的凹槽设置于所述轮盘结构的周向上，所述凹槽的方向与所述介质喷头(24)转动的方向相同。A groove for accommodating the electrode wire (23) is provided in the circumferential direction of the roulette structure, and the direction of the groove is the same as the rotation direction of the medium spray head (24).
  3. 如权利要求1所述的用于模具钢切割的介质喷头，所述介质喷头(24)为球体、扁球体，其短直径方向设置有连接件(27)，所述连接件与所述支撑柱(21)的下端连接，所述球体、扁球体的长直径绕所述连接件(27)的径向转动；The medium spray head for die steel cutting according to claim 1, wherein the medium spray head (24) is a sphere or a flat sphere, and a connecting member (27) is provided in a short diameter direction thereof, the connecting member and the support column (21) the lower end is connected, and the long diameter of the sphere and the flat sphere rotates around the radial direction of the connecting member (27);
    容纳所述电极丝(23)的凹槽设置于所述介质喷头(24)表面垂直于所述连接件(27)的周向上，所述凹槽的方向与所述介质喷头(24)转动的方向相同；A groove for accommodating the electrode wire (23) is provided on the surface of the media nozzle (24) perpendicular to the circumferential direction of the connector (27), and the direction of the groove is the same as that of the media nozzle (24) The same direction;
  4. 如权利要求3或2所述的用于模具钢切割的介质喷头，所述通孔(26)或孔隙沿所述介质喷头的转动方向排布。The medium spray head for die steel cutting according to claim 3 or 2, wherein the through holes (26) or pores are arranged along the rotation direction of the medium spray head.
  5. 如权利要求3或2所述的用于模具钢切割的介质喷头，所述介质喷头(24)的 下表面为扁平结构，所述扁平结构上交错的设置有不同凹槽；所述各凹槽的深度不同，所述各凹槽的深度的差值至少为所述电极丝(23)的直径。The medium spray head for die steel cutting according to claim 3 or 2, the lower surface of the medium spray head (24) is a flat structure, and different grooves are staggered on the flat structure; the grooves The depth of each groove is different, and the difference between the depths of the grooves is at least the diameter of the electrode wire (23).
  6. 如权利要求1-5所述的用于模具钢切割的介质喷头，在所述凹槽交错的部位所述介质喷头(24)的下表面厚度增加。The medium spray head for die steel cutting according to claims 1-5, wherein the thickness of the lower surface of the medium spray head (24) is increased at the position where the grooves are interlaced.
  7. 如权利要求1-6所述的用于模具钢切割的介质喷头，在所述凹槽交错为“米”字形，所述介质喷头(24)的下表面的厚度由中间向边缘递减。The medium spray head for die steel cutting according to claims 1-6, wherein the grooves are staggered in a "meter" shape, and the thickness of the lower surface of the medium spray head (24) decreases from the middle to the edge.
PCT/CN2019/098744 2018-12-28 2019-07-31 Medium nozzle for die steel cutting WO2020134081A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021600008U JP3234838U (en) 2018-12-28 2019-07-31 Medium spray head for cutting mold steel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811627716.9 2018-12-28
CN201811627716.9A CN109465512B (en) 2018-12-28 2018-12-28 Medium spray head for cutting die steel

Publications (1)

Publication Number Publication Date
WO2020134081A1 true WO2020134081A1 (en) 2020-07-02

Family

ID=65677712

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/098744 WO2020134081A1 (en) 2018-12-28 2019-07-31 Medium nozzle for die steel cutting

Country Status (3)

Country Link
JP (1) JP3234838U (en)
CN (1) CN109465512B (en)
WO (1) WO2020134081A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113894879A (en) * 2021-11-22 2022-01-07 扬州大学 Processing zither panel unloader

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109465512B (en) * 2018-12-28 2024-05-24 太仓成和信精密科技有限公司 Medium spray head for cutting die steel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301349A (en) * 1978-10-06 1981-11-17 Inoue-Japax Research Incorporated Electrical machining apparatus for forming a three-dimensional surface contour in a workpiece
CN2841220Y (en) * 2005-11-22 2006-11-29 任建强 Molybdenum filament jitter buffer device in the line cutting processing
CN201020545Y (en) * 2006-05-08 2008-02-13 沈强 Internal cooling knife with atomized jet
CN102398094A (en) * 2011-11-24 2012-04-04 张祖田 U-shaped slow wire walking head for cutting wires
CN102528550A (en) * 2012-02-07 2012-07-04 东莞市安默琳节能环保技术有限公司 Minimal quantity lubrication (MQL) supply system for processing of outer-cooling type high-speed machine tool and inner-cooling type high-speed machine tool
CN109465512A (en) * 2018-12-28 2019-03-15 太仓新思成模具钢有限公司 A kind of medium spray head for mould steel cutting

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157928A (en) * 1980-05-01 1981-12-05 Inoue Japax Res Inc Machining liquid feeder for wire cut electric discharge machining device
JP3478730B2 (en) * 1998-07-16 2003-12-15 日本碍子株式会社 Wire electric discharge machine, wire electric discharge method, and extrusion mold
CN103084680B (en) * 2013-02-07 2017-02-08 哈尔滨理工大学 Method for improving quality of wire cut electrical discharge machining by adopting multimedia
CN104339055A (en) * 2014-10-28 2015-02-11 苏州市宝玛数控设备有限公司 Fluid spray device for wire cut electrical discharge machine
CN107900615B (en) * 2017-11-13 2019-05-17 常州工学院 A kind of Wire EDM and surface peening combined machining method and device
CN210121714U (en) * 2018-12-28 2020-03-03 太仓成和信精密科技有限公司 Medium sprayer for cutting die steel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301349A (en) * 1978-10-06 1981-11-17 Inoue-Japax Research Incorporated Electrical machining apparatus for forming a three-dimensional surface contour in a workpiece
CN2841220Y (en) * 2005-11-22 2006-11-29 任建强 Molybdenum filament jitter buffer device in the line cutting processing
CN201020545Y (en) * 2006-05-08 2008-02-13 沈强 Internal cooling knife with atomized jet
CN102398094A (en) * 2011-11-24 2012-04-04 张祖田 U-shaped slow wire walking head for cutting wires
CN102528550A (en) * 2012-02-07 2012-07-04 东莞市安默琳节能环保技术有限公司 Minimal quantity lubrication (MQL) supply system for processing of outer-cooling type high-speed machine tool and inner-cooling type high-speed machine tool
CN109465512A (en) * 2018-12-28 2019-03-15 太仓新思成模具钢有限公司 A kind of medium spray head for mould steel cutting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113894879A (en) * 2021-11-22 2022-01-07 扬州大学 Processing zither panel unloader

Also Published As

Publication number Publication date
JP3234838U (en) 2021-11-11
CN109465512B (en) 2024-05-24
CN109465512A (en) 2019-03-15

Similar Documents

Publication Publication Date Title
WO2020134081A1 (en) Medium nozzle for die steel cutting
EP1898048B1 (en) Rotor for steam turbine and process for producing the same
US8350179B2 (en) Application of surface relief to spot welding electrodes
US9440305B2 (en) Method of resistance spot welding aluminum alloy workpieces
WO2020134080A1 (en) Cutter for mold steel, and cutting machining method therefor
CN210121714U (en) Medium sprayer for cutting die steel
CN105834399A (en) Composite low-pressure casting riser tube and preparation method thereof
WO2020134075A1 (en) Pretreatment device and pretreatment method for die steel
US11919265B2 (en) Method for manufacturing a mold segment for curing and vulcanizing a tire
CN209792811U (en) Cutting head to mould steel
JP2005281761A (en) Powder for thermal spraying, and production method of powder for thermal spraying
KR101880392B1 (en) manufacturing method of valve seat ring for ship
CN107891320A (en) A kind of floating support of bearing grinder
JP4626945B2 (en) Cermet sprayed coating member and method for producing the same
JPS63192504A (en) Plug for seamless steel tube manufacturing
EP2169281B1 (en) Wire rod for i-type oil ring, and its manufacturing method
CN104907760A (en) Sugar mill millroller shaft neck wear repairing method
JP5889891B2 (en) Steel manufacturing method
JPH01230761A (en) Production of valve lifter made of aluminum alloy
US11338359B2 (en) Composite part with external part cast around internal insert and method for producing the same
CN107699662B (en) A method of improving die casting molded surface hardness
JP2614370B2 (en) Manufacturing method of needle tip
CN117600037A (en) Method for improving corrosion resistance of zirconium alloy welded joint
RU2333087C2 (en) Method of restoration of working walls of crystalliser made of copper or its alloys
KR0143491B1 (en) Coating method by explosion spray on the continuous mold

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19903146

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021600008

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19903146

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 14/01/2022)

122 Ep: pct application non-entry in european phase

Ref document number: 19903146

Country of ref document: EP

Kind code of ref document: A1