WO2020134079A1 - 一种用于模具钢切割加工的锁止装置 - Google Patents

一种用于模具钢切割加工的锁止装置 Download PDF

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Publication number
WO2020134079A1
WO2020134079A1 PCT/CN2019/098675 CN2019098675W WO2020134079A1 WO 2020134079 A1 WO2020134079 A1 WO 2020134079A1 CN 2019098675 W CN2019098675 W CN 2019098675W WO 2020134079 A1 WO2020134079 A1 WO 2020134079A1
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Prior art keywords
locking device
cutting
die steel
workpiece
electromagnetic coil
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PCT/CN2019/098675
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English (en)
French (fr)
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舒丹
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苏州贸港机械配件有限公司
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Publication of WO2020134079A1 publication Critical patent/WO2020134079A1/zh

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    • 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
    • B23H11/00—Auxiliary apparatus or details, not otherwise provided for
    • 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

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  • the utility model relates to the field of die steel processing equipment, in particular to a locking device for die steel cutting processing.
  • 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 cutting platform can only realize the feeding of the workpiece to be cut, and cannot guarantee the stable position of the workpiece during the cutting process.
  • the purpose of the present invention is to provide a cutting processing device that can improve the performance of the die steel cutting surface.
  • a locking device for die steel cutting processing for a cutting platform on which a die steel workpiece to be processed is provided, and the cutting platform is used to fix the die steel to be processed Workpiece, or for the workpiece to move relative to the cutting device on its surface; the mold steel workpiece to be processed is fixed to the upper surface of the locking device, and the lower surface of the locking device is provided with protrusions, so The locking device is connected to the upper surface of the cutting platform through the protrusion, an electromagnetic coil is provided on the lower end of the protrusion, and a protective layer is coated on the outer side of the electromagnetic coil.
  • a magnetic body is also distributed in the cutting platform, the magnetic body includes an electromagnet or a permanent magnet or a combination thereof; in the locked state: the energized state of the electromagnetic coil changes and A magnetic field that attracts the magnetic body is generated so that the locking device is attracted by the magnetic body and fixed inside the sliding groove.
  • the magnetic pole directions of the magnetic bodies are perpendicular to the cutting platform, and the magnetic pole directions of the magnetic bodies are the same; the electromagnetic coils are generated under the same energized state.
  • the magnetic field directions are the same.
  • the magnetic fields generated by the electromagnetic coils in two energized states are in opposite directions.
  • the protective layers covered on the outer and lower sides of the electromagnetic coil are made of PVC or nitrile rubber.
  • the Hall element is disposed on the bottom surface of the inner wall where the sliding grooves intersect
  • At least two pairs of the electromagnetic coils are connected to the lower side of each protrusion through a rotating fixing member, the electrode direction is the same when the electromagnetic coils are energized, and the rotating fixing member is Hinge.
  • the cutting processing tool for mold steel provided by the utility model is fixed to the cutting platform through the protrusion of the lower surface of the locking device.
  • An electromagnetic coil and a sensing array are respectively arranged in the protrusion and the cutting platform.
  • the utility model can accurately obtain the position coordinates of the die steel workpiece to be processed. As a result, the workpiece to be processed can be accurately positioned and the cutting accuracy can be improved.
  • the utility model can also be provided with magnetic bodies at different positions in the cutting platform.
  • the energization state of the above-mentioned electromagnetic coils By controlling the energization state of the above-mentioned electromagnetic coils, after the die steel workpiece to be processed reaches the desired position, it passes through the magnetic bodies and the electromagnetic coils. The attractive force between them further stabilizes the position of the above-mentioned workpiece, and further reduces the error caused by the displacement of the workpiece during the cutting process.
  • FIG. 1 is a schematic diagram of the overall structure of a cutting and processing device according to the present invention.
  • FIG. 2 is a schematic diagram of the connection relationship between the electromagnetic coil and the cutting platform in the cutting processing device of the present invention
  • 3 is a schematic diagram of the sliding groove and the sensor array on the cutting platform surface of the utility model
  • FIG. 4 is a schematic diagram of another connection relationship between the electromagnetic coil and the cutting platform in the cutting processing device of the present invention.
  • FIG. 1 is a locking device for die steel cutting processing according to the present invention, which 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 processing device of the present invention may further be provided with a locking device 3 on the cutting platform.
  • the mold steel workpiece to be processed is fixed on the upper surface of the locking device 3, the lower surface of the locking device 3 is provided with a protrusion, and the locking device 3 is connected to the cutting platform through the protrusion
  • an electromagnetic coil 31 is provided on the lower end of the protrusion, and the outer side of the electromagnetic coil 31 is covered with a protective layer.
  • the upper surface of the cutting platform 1 is provided with staggered sliding grooves 11, the width of the sliding grooves 11 is slightly larger than the protrusions of the lower surface of the locking device 3
  • the diameter, the inner wall or the bottom of the sliding groove 11 are evenly distributed with a sensor array composed of Hall elements 12.
  • the electrode directions are the same when the electromagnetic coils 31 are energized, and the rotation fixing member is a rotating shaft .
  • the magnetic repulsion causes each pair of coils to rotate around the rotation axis and expand. This can further increase the fixing of the locking device 3 by increasing the contact area of the electrode ring and the upper inner wall of the sliding groove.
  • the bottom of the cutting platform 1 can also be set to control its contact with the splayed electromagnetic coil through the lifting structure 14.
  • the lifting structure 14 controls the bottom of the cutting platform 1 to rise and abut against the lower surface of the electromagnetic coil.
  • the upper surface of the electromagnetic coil contacts the upper inner wall of the sliding groove and is fixed by the lifting structure.
  • a drive unit may be further provided on the upper part of the cutting platform 1, the drive unit may include an electromagnetic drive unit or a rotating wheel or a mechanical arm, and the drive unit may drive the locking device 3 Move along the sliding groove 11 on the upper surface of the cutting platform 1.
  • a magnetic body 13 may be further arranged in the cutting platform 1 as shown in FIG.
  • the magnetic body can be a permanent magnet or an electromagnet driven by a current control circuit.
  • the above-mentioned cutting and processing device further includes a control unit, which is configured to control the position of the workpiece to be processed in the following manner to achieve precise cutting:
  • control unit first collects the data of each Hall element in the sensing matrix when the protrusion provided on the lower surface of the locking device 3 is not inserted into the sliding groove 11 on the upper surface of the cutting platform 1
  • the intensity of the magnetic field stores the intensity of the magnetic field generated by the magnetic body it senses according to the position coordinates of the Hall elements. For example, referring to FIG.
  • the Hall elements are arranged on the lower surface of the sliding groove 11 to form a 5*2 array, and the Hall elements in the first row and first column sense the magnetic field generated by the magnetic bodies , Generate a magnetic field strength signal, and store the magnetic field strength signal in the element of the first row and first column in the calibration matrix C that generates 5*2; the magnetic field strength signal sensed by the Hall element in the first row and second column Correspondingly stored in the elements of the first row and the second column in the calibration matrix C of 5*2, thereby acquiring the magnetic field strength of each sampling point in the sensor array to obtain the calibration matrix C;
  • the target position matrix A includes the position coordinates of the workpiece and the depth or time requirements for cutting at the position. Its purpose is to keep the workpiece at a certain position for the cutting knife to cut, and move the workpiece to the bottom after the cutting reaches the required depth or between One position, continue cutting until the processing is completed.
  • the control unit reads the target position matrix A;
  • the control unit controls the energization of the electromagnetic coil 31 provided on the protrusion, so that the electromagnetic coil induces a first magnetic field with an intensity not exceeding the first field strength, and the inner wall or bottom of the sliding groove 11 is distributed
  • the Hall element of the sensor senses the first magnetic field.
  • the control unit determines whether the distance between the sensing matrix S and the target position matrix A reaches a preset lock threshold, and if the distance exceeds the lock threshold, it is necessary to control and drive the workpiece to its setting Position; otherwise, the locking device 3 can be controlled to enter a locked state, cutting the workpiece.
  • the energization state of the electromagnetic coil 31 is changed, so that the electromagnetic coil 31 induces a second magnetic field with a strength that reaches a second field strength, and the second magnetic field attracts the magnetic body to cause the
  • the electromagnetic coil 31 is attracted by the magnetic body and fixed inside the sliding groove 11; at this time, the driving unit can cooperatively control the locking device 3 to restrict the locking device 3 on the cutting platform 1
  • the upper surface of the is moved along the sliding groove 11.
  • the wire walking mechanism drives the electrode wire to move relative to the mold steel workpiece to be processed, the electrode wire and the mold steel workpiece to be processed are discharged, and the mold steel workpiece to be processed is eroded
  • the part where the surface contacts the electrode wire is set to a set position, and then the target position matrix A is updated, and the second step to the sixth step are repeated until the cutting of the workpiece is completed.
  • the magnetic pole direction of each magnetic body is perpendicular to the cutting platform 1, the magnetic pole direction of each magnetic body is the same; the magnetic field direction of each electromagnetic coil 31 under the same energized state is the same, In the two energized states, the magnetic field generated by the same electromagnetic coil 31 is in the opposite direction.
  • the field strength of the first magnetic field is smaller than the field strength of the second magnetic field, the direction of the second magnetic field is the same as the direction of the magnetic field of the magnetic body, and the direction of the first magnetic field is opposite to the direction of the second magnetic field.
  • the outer side of the electromagnetic coil 31 may also be covered with a protective layer made of PVC material or nitrile rubber material to protect the coil from abrasion by the cutting platform and short circuit.
  • PVC material or nitrile rubber insulation can protect the coil from cutting debris or electric sparks.
  • the sensor array can also periodically collect data of the sensor matrix S to determine whether the distance between the sensor matrix S and the target position matrix A is maintained within the range of the locking threshold. Once it is judged that it exceeds the threshold, it enters the moving state and stops the cutting operation of the workpiece: the electromagnetic coil 31 is energized to induce a magnetic field that can be recognized by the Hall element, and the sensor array is based on the induction of the magnetic field.
  • the location of the components to determine whether the mold steel workpiece to be processed has reached a preset position; when the preset position has not been reached, the locking unit 3 is controlled by the drive unit on the cutting platform 1 The upper surface moves along the sliding groove 11; until it reaches the preset position again, it enters the locked state again and resumes the cutting operation on the workpiece.
  • the cutting and processing device of the present invention can further arrange the Hall element 12 on the bottom surface of the inner wall where the sliding grooves 11 intersect, and set the interval between the sliding grooves 11 to be equal, and divide the cutting platform 1 evenly .
  • 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.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

一种用于模具钢切割加工的锁止装置。本实用新型通过锁止装置下表面的凸起与切割平台固定。所述凸起以及所述切割平台内分别设置有电磁线圈和传感阵列。通过传感阵列对电磁线圈磁场强度的检测，本实用新型可精确的获得待加工的模具钢工件的位置坐标。由此，可对待加工工件实现精准的定位，提高切割精度。

Description

一种用于模具钢切割加工的锁止装置 技术领域
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加工的锁止装置。
背景技术
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。
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。现有的切割装置，其切割平台仅仅能够实现对待切割工件的送料，并不能够保证切割过程中工件位置稳定。
一旦切割过程中工件相对切割刀发生位置偏移，通常的做法是人工关停机器，纠正该偏移，或者通过增设机械手纠正该偏移。但现实是，切割过程中，由于切割点电火花所产生的视觉干扰，加上切割所产生的静电力和爆炸力的作用，操作人员很难及时检测到该位置偏移。通常只有当模具钢完成切割之后才能通过检测装置获知其切割精度未达到要求。因此，现有模具钢切割之后往往还需要进一步的切削、铣削、磨削过程。加工效率不高。
实用新型内容
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能够提高模具钢切割面性能的切割加工装置。
首先，为实现上述目的，提出一种用于模具钢切割加工的锁止装置，用于切割平台，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移动；所述待加工的模具钢工件固定于所述锁止装置的上表面，所述锁止装置的下表面设置有凸起，所述锁止装置通过所述凸起连接所述切割平台的上表面，所述凸起的下侧端部设置有电磁线圈，所述电磁线圈的外侧包覆有保护层。
可选的，上述的切割加工装置中，所述切割平台内还分布有磁性体，所述磁性体包括电磁铁或永磁体或其组合；锁止状态下：所述电磁线圈的通电状态改变而产生与所述磁性体相互吸引的磁场，使得所述锁止装置受所述磁性体吸引而固定在所述滑动槽的内部。
可选的，上述的切割加工装置中，所述各磁性体的磁极方向均垂直于所述切割平台，所述各磁性体的磁极方向相同；所述各电磁线圈在同一通电状态下所产生的磁场方向均相同。
可选的，上述的切割加工装置中，所述电磁线圈在两种通电状态下所产生的磁场方向相反。
可选的，上述的切割加工装置中，所述电磁线圈外侧及下侧所包覆的保护层为PVC材质或丁腈橡胶材质。
可选的，上述的切割加工装置中，所述霍尔元件设置在所述滑动槽交错处的内壁底面
可选的，上述的切割加工装置中，每一个凸起的下侧均通过旋转固定件连接有至少2对所述电磁线圈，所述各电磁线圈通电时电极方向相同，所述旋转固定件为转轴。
有益效果
本实用新型所提供的针对模具钢的切割加工工具，其通过锁止装置下表面的凸起与切割平台固定。所述凸起以及所述切割平台内分别设置有电磁线圈和传感阵列。通 过传感阵列对电磁线圈磁场强度的检测，本实用新型可精确的获得待加工的模具钢工件的位置坐标。由此，可对待加工工件实现精准的定位，提高切割精度。
进一步，本实用新型还可在所述切割平台内的不同位置设置磁性体，通过控制对上述电磁线圈的通电状态，在待加工的模具钢工件到达需要的位置后，通过磁性体和电磁线圈之间的吸引力进一步稳固上述工件的位置，进一步减小切割过程中工件移位而造成的误差。
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。
附图说明
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：
图1为根据本实用新型的切割加工装置整体结构的示意图；
图2为本实用新型的切割加工装置中电磁线圈与切割平台之间连接关系的示意图；
图3为本实用新型切割平台表面的滑动槽以及传感阵列的示意图；
图4为本实用新型的切割加工装置中电磁线圈与切割平台之间另一种连接关系的示意图。
具体实施方式
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。
图1为根据本实用新型的一种用于模具钢切割加工的锁止装置，其包括：
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；
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，产生静电力和爆炸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；
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。
本实用新型的加工装置还可进一步在切割平台上设置锁止装置3。所述待加工的模具钢工件固定于所述锁止装置3的上表面，所述锁止装置3的下表面设置有凸起，所述锁止装置3通过所述凸起连接所述切割平台1的上表面，所述凸起的下侧端部设置有电磁线圈31，所述电磁线圈31的外侧包覆有保护层。为配合所述的凸起，参考图2所示，所述切割平台1的上表面设置有交错排列的滑动槽11，所述滑动槽11的宽度略大于所述锁止装置3下表面的凸起的直径，所述滑动槽11的内壁或底部还均匀分布有霍尔元件12构成的传感阵列。
进一步，参考图4所示，每一个凸起的下侧均通过旋转固定件连接有至少2对所述电磁线圈31，所述各电磁线圈31通电时电极方向相同，所述旋转固定件为转轴。所述线圈通电后磁性相斥，而使得各对所述线圈绕转轴旋转，展开。由此可进一步通过增加电极圈与滑动槽上侧内壁的接触面积而增加对锁止装置3的固定。此时，还可设置切割平台1的底部可通过升降结构14控制其与所述张开的电磁线圈的接触。在锁止 状态下，通过升降结构14控制切割平台1的底部上升抵合在电磁线圈的下表面，所述电磁线圈的上表面与滑动槽上侧内壁的接触，被升降结构固定。
为实现对工件的自适应的控制，所述切割平台1的上部还可设置有驱动单元，所述驱动单元包括电磁驱动单元或者转轮或者机械臂，所述驱动单元可以驱动所述锁止装置3在所述切割平台1的上表面沿所述滑动槽11移动。
为进一步提高对锁止装置3的锁定强度，还可进一步在所述切割平台1内按照图2所示的方式排布有磁性体13。所述的磁性体可选择为永磁体，或者由电流控制电路驱动的电磁铁。
上述的切割加工装置还包括控制单元，所述控制单元被设置以通过如下的方式实现对待加工工件位置的控制，以实现精准的切割：
使用中，控制单元先在未将所述锁止装置3下表面设置的凸起插入所述切割平台1上表面的滑动槽11内时，采集所述传感矩阵中的每一个霍尔元件的磁场强度，按照所述各霍尔元件的位置坐标保存其感应到的磁性体所产生的磁场强度。例如，参考图3，所述的霍尔元件设置在滑动槽11的下表面，构成一个5*2的阵列，第一行第一列的霍尔元件感应到所述各磁性体所产生的磁场，产生一个磁场强度信号，将该磁场强度信号存储于生成5*2的校准矩阵C中的第一行第一列的元素中；第一行第二列的霍尔元件感应到的磁场强度信号相应的存储于5*2的校准矩阵C中的第一行第二列的元素中，由此采集传感阵列中各采样点的磁场强度获得校准矩阵C；
而后，通知操作人员将待加工的模具钢工件固定于所述锁止装置3的上表面，固定后将所述锁止装置3下表面设置的凸起插入所述切割平台1上表面的滑动槽11内；操作人员按照工件的加工要求设置目标位置矩阵A。目标位置矩阵A包括有工件的位置坐标以及在该位置上切割的深度或时间要求，其目的在于保持工件在某位置供切割刀 进行切割，在切割达到需要的深度或之间后移动工件至下一位置，继续切割直至加工完成。控制单元读取目标位置矩阵A；
此后开始加工过程。该过程中，首先，控制单元控制向所述凸起上设置的电磁线圈31通电，使电磁线圈感应产生强度不超过第一场强的第一磁场，所述滑动槽11的内壁或底部所分布的霍尔元件感应所述的第一磁场，通过类似采集校准矩阵C的方式，所述传感阵列根据霍尔元件所感应的磁场强度生成检测矩阵D并输出，由此计算出传感矩阵S＝D-C。通过引入校准矩阵C，直接采集获得的检测矩阵D中由磁性体或第一磁场所产生的偏差量得以被纠正，由此获得的传感矩阵S中仅包含有标示工件坐标位置的分量，因而对工件位置的判断更为准确。控制单元判断所述传感矩阵S与所述目标位置矩阵A之间的距离是否达到预设的锁止阈值，若所述距离超出所述锁止阈值需要控制驱动所述工件移动至其设定的位置；否则，可控制所述锁止装置3进入锁止状态，对工件进行切割作业。
具体而言，驱动所述工件移动至其设定的位置的方式如下：计算所述传感矩阵S至所述目标位置矩阵A的传递矩阵H，其中，A＝S×H，根据所述传递矩阵H控制所述驱动单元，使所述锁止装置3在所述切割平台1的上表面沿所述滑动槽11移动，然后继续通过上述的方式评估新位置下所采集的传感矩阵S与所述目标位置矩阵A之间的距离是否达到预设的锁止阈值，直至其可进入锁止状态。
锁止状态下，改变所述电磁线圈31的通电状态，使得所述电磁线圈31感应产生强度达到第二场强的第二磁场，所述第二磁场对上述磁性体产生吸引力，使所述电磁线圈31受所述磁性体吸引而固定在所述滑动槽11的内部；此时，所述驱动单元可协同控制所述锁止装置3，限制所述锁止装置3在所述切割平台1的上表面沿所述滑动槽11移动。该状态下，所述走丝机构驱动所述电极丝相对所述待加工的模具钢工件运动， 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至设定的位置，而后更新所述目标位置矩阵A，重复所述第二步至所述第六步，直至完成对所述工件的切割。
上述过程中，所述各磁性体的磁极方向均垂直于所述切割平台1，所述各磁性体的磁极方向相同；所述各电磁线圈31在同一通电状态下所产生的磁场方向均相同，而在两种通电状态下同一个所述电磁线圈31所产生的磁场方向相反。第一磁场的场强小于所述第二磁场的场强，所述第二磁场的方向与所述磁性体的磁场方向相同，所述第一磁场的方向与所述第二磁场的方向相反。
所述电磁线圈31外侧还可包覆有PVC材质或丁腈橡胶材质构成的保护层，以保护线圈不被切割平台磨损而出现短路。PVC材质或丁腈橡胶绝缘，可保护线圈不受切割碎屑或电火花的影响。
切割过程中，所述的传感阵列还可同步的定期采集传感矩阵S数据，判断所述传感矩阵S与所述目标位置矩阵A之间的距离是否维持在锁止阈值的范围内。一旦判断超出阈值则进入移动状态，并停止对工件的切割作业：所述电磁线圈31通电而感应产生能够被所述霍尔元件识别的磁场，所述传感阵列根据感应到所述磁场的霍尔元件所在位置判断所述待加工的模具钢工件是否达到预设的位置；在未达到所述预设的位置时，通过所述驱动单元控制所述锁止装置3在所述切割平台1的上表面沿所述滑动槽11移动；直至重新达到所述预设的位置时，重新进入锁止状态，恢复对工件的切割作业。
本实用新型的切割加工装置还可进一步将霍尔元件12设置在所述滑动槽11交错处的内壁底面，并设置所述各滑动槽11之间的间距相等，且均匀分割所述切割平台1。 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。

Claims (7)

  1. 一种用于模具钢切割加工的锁止装置，用于模具钢工件的切割平台(1)，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切割装置(2)移动；
    其特征在于，
    所述待加工的模具钢工件固定于所述锁止装置(3)的上表面，所述锁止装置(3)的下表面设置有凸起，所述锁止装置(3)通过所述凸起连接所述切割平台(1)的上表面，所述凸起的下侧端部设置有电磁线圈(31)，所述电磁线圈(31)的外侧包覆有保护层。
  2. 如权利要求1所述的用于模具钢切割加工的锁止装置，其特征在于，所述切割平台(1)内还分布有磁性体(13)，所述磁性体包括电磁铁或永磁体或其组合；锁止状态下：所述电磁线圈(31)的通电状态改变而产生与所述磁性体相互吸引的磁场，使得所述锁止装置(3)受所述磁性体吸引而固定在所述滑动槽(11)的内部。
  3. 如权利要求2所述的用于模具钢切割加工的锁止装置，其特征在于，所述各磁性体的磁极方向均垂直于所述切割平台(1)，所述各磁性体的磁极方向相同；所述各电磁线圈(31)在同一通电状态下所产生的磁场方向均相同。
  4. 如权利要求2所述的用于模具钢切割加工的锁止装置，其特征在于，所述电磁线圈(31)在两种通电状态下所产生的磁场方向相反。
  5. 如权利要求1所述的用于模具钢切割加工的锁止装置，其特征在于，所述电磁线圈(31)的外侧和下侧均包覆有PVC材质或丁腈橡胶材质作为保护层。
  6. 如权利要求1所述的用于模具钢切割加工的锁止装置，其特征在于，所述每一个凸起的下侧均通过旋转固定件连接有至少2对所述电磁线圈(31)，所述各电磁线圈(31)通电时电极方向相同。
  7. 如权利要求1所述的用于模具钢切割加工的锁止装置，其特征在于，所述旋转固定件为转轴。
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