阅读说明：本技术 一种围带线切割加工方法 (Method for cutting and processing enclosing belt line ) 是由 王刚 李彬 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种围带线切割加工方法,其步骤包括：对工件安装环钻分度孔,对焊接在工件安装环上的待加工围带钻对应的穿线孔,然后将其整体正确安装在位于机床的底座上,并进行检测,在加时使得任一分度孔与定位槽对准即可完成定位,完成加工后转动工件安装环角度使得下一个分度孔与定位槽对准即可完成定位,重复操作即可完成所有孔位的线切割加工,采用工装对待加工的围带进行固定,设置检测缝隙,通过检测卡能否插入可以快速判断是否将工件安装到位,工件安装环上的分度孔及其他配套设施可以保证围带的快速定位,工装的存在使其可以进行立式的线切割加工,具有加工技术成熟、成本低、毛刺少、不会因为高温影响味道本身材质的优点。(The invention discloses a method for cutting and processing a shroud ring line, which comprises the following steps: drilling index holes on the workpiece mounting ring, drilling corresponding threading holes on the to-be-processed shroud ring welded on the workpiece mounting ring, then correctly mounting the whole shroud ring on a base of a machine tool, and detecting, when in processing, any indexing hole is aligned with the positioning groove to complete positioning, after the processing is completed, the angle of the workpiece mounting ring is rotated to align the next indexing hole with the positioning groove to complete positioning, the wire cutting processing of all hole positions can be completed by repeated operation, the tool is adopted to fix the shroud band to be processed, a detection gap is arranged, whether can insert through the detection card can whether can the rapid judgement with the workpiece setting target in place, the quick location of shroud can be guaranteed to index hole and other supporting facilities on the workpiece setting ring, the existence of frock makes it can carry out vertical line cutting processing, has that processing technology is ripe, with low costs, the burr is few, can not influence the advantage of taste own material because of high temperature.)

1. The utility model provides a shroud line cutting processing method which characterized in that, it carries out based on shroud processing location frock, its step includes:

s1, welding the shroud to be processed on the workpiece mounting ring to form a workpiece mounting ring whole;

s2, drilling the indexing holes and the shroud threading holes on the whole workpiece mounting ring to obtain a preprocessed shroud whole fixed on the workpiece mounting ring;

s3, cleaning the whole preprocessed shroud and a base arranged on a machine tool, and checking the state of the base;

s4, integrally placing the prefabricated shroud ring on the bearing blocks, adjusting the workpiece mounting ring to make the workpiece mounting ring closely contact with the inclined planes of the two bearing blocks, adjusting the angle of the workpiece mounting ring to make any indexing hole aligned with the positioning groove, and performing assistance and inspection through the positioning pin;

s5, fixing the prefabricated shroud ring integrally by using a pressing block;

s6, after the fixation is finished, the detection card is used to penetrate through the detection gap to detect whether the installation is qualified, if not, the installation is carried out again according to the steps of S3-S5, and if not, the next procedure is carried out;

s7, cutting wires used for wire cutting penetrate through the threading holes of the preprocessed shroud ring to carry out processing operation;

s8, rotating the angle of the workpiece mounting ring to align the next indexing hole with the positioning groove, performing assistance and inspection through the positioning pin, and repeating the operation of S7 to complete machining;

and S9, repeating the step S8, and finishing the wire cutting processing of all the hole sites of the preprocessed enclosing belt.

2. The method as claimed in claim 1, wherein the workpiece mounting ring in step S1 is integrally drilled with a machining center to form threading holes around the circumference of the shroud and indexing holes on the workpiece mounting ring, and the positions of the threading holes and the indexing holes on the workpiece mounting ring are processed correspondingly.

3. The method for wire-electrode cutting processing of shroud ring of claim 1, wherein the items for checking the state of the base in S3 include whether the specification of the base matches with the workpiece mounting ring, whether the base is mounted as required, whether the base is damaged, whether the base is cleaned as required, and whether the screw of the pressing block of the base is unscrewed for easy mounting.

4. The method for wire-electrode cutting processing of shroud ring of claim 1, wherein in step S4, the diameter of the index hole and the width of the positioning groove are equal to the diameter of the positioning pin, and the positioning pin passes through the positioning groove and the index hole simultaneously to indicate the positioning is accurate.

5. The method of claim 1, wherein step S4 further comprises detecting the fit between the back of the workpiece mounting ring and the mounting plate of the base, wherein the gap is less than 0.03 mm.

6. The method for wire-electrode cutting of the shroud ring of claim 1, wherein in step S5, when the pressing blocks fix the whole workpiece mounting ring, the lower two pressing blocks and the middle two pressing blocks at the upper end are pre-tightened, then the other four pressing blocks at the upper end are pre-tightened from the middle to the outside, and finally the whole workpiece mounting ring is completely tightened in the same order.

7. The method for wire-electrode cutting processing of shroud ring of claim 1, wherein step S6 is specifically operated to insert the detection card into the detection gap, the detection card can not pass through the space between the receiving block and the workpiece mounting ring, which indicates that the workpiece mounting ring and the receiving block are precisely attached and mounted in place; if the insertion indicates a gap between the workpiece mounting ring and the carrier block, this indicates an incorrect mounting position and requires a new mounting operation.

8. The method as claimed in claim 7, wherein the thickness of the detection card is 0.02 mm.

9. The method of claim 1, wherein the cutting wire is required to be parallel to the mounting plate of the base in step S7.

10. The method as claimed in claim 1, wherein the machined shroud is inspected and then deburred.

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a method for cutting and machining a shroud ring line.

Background

Shroud refers to a structure used in power station steam turbines, gas turbines, aircraft engines, and other rotating machine blades to reduce the vibratory response of the blades. The shroud structure utilizes the friction action between adjacent blades to dissipate the vibration energy of the blades, thereby achieving the effect of vibration reduction. At the blade top, there is an initial clearance between the adjacent shroud of assembled blade in static state, and under the effect of centrifugal force, the blade takes place to twist reverse the recovery during operation for adjacent blade shroud contact surface pastes closely each other, and when the blade vibration, the vibration energy of relative slip effect dissipation blade of the emergence between the shroud contact surface reduces blade vibration stress, thereby improves the life-span of blade and the fail safe nature of operation.

In the middle of current shroud ring production process, need to encircle the shroud ring and cut out a series of holes, this hole is the irregular hole that has certain angle, current processing mode is to adopt laser cutting, but adopt laser cutting to have the cutting plane coarse, there is the burr, the high temperature brings adverse effect etc. condition to the metal material's of shroud ring physicochemical properties, and can't realize the problem of processing basically to great or thicker shroud ring, simultaneously at laser cutting's in-process, only can lie the part and go on processing, the laser head need move and angle of adjustment in the horizontal direction, it is more loaded down with trivial details to process.

The wire cutting technology is low in cost and mature in processing technology, and the tool and the method are designed to make the wire cutting necessary to complete the processing of the shroud ring.

Disclosure of Invention

One, (technical problem to be solved)

In order to overcome the defects, the inventor of the invention continuously reforms and innovates through long-term exploration and trial and multiple experiments and efforts, and provides a shroud ring linear cutting processing method which is matched with a tool to fix a shroud ring to be processed, so that the shroud ring can be vertically processed, is suitable for processing in a linear cutting mode, and has the advantages of low processing cost, less burrs and no influence on the taste quality due to high temperature. Whether be provided with the detection gap, whether can insert through detecting the card and can quickly judge whether target in place the workpiece setting, the workpiece setting ring that has the index hole and set up the constant head tank on the mounting panel cooperate the locating pin to realize quick location, guarantee the quick location of the processing in the peripheral hole of shroud.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a shroud line cutting processing method, it is based on shroud processing location frock goes on, its step includes:

s1, welding the shroud to be processed on the workpiece mounting ring to form a workpiece mounting ring whole;

and S2, drilling the indexing holes and the shroud threading holes on the whole workpiece mounting ring to obtain the prefabricated shroud whole fixed on the workpiece mounting ring.

S3, cleaning the whole preprocessed shroud and a base arranged on a machine tool, and checking the state of the base;

s4, integrally placing the prefabricated shroud ring on the bearing blocks, adjusting the workpiece mounting ring to make the workpiece mounting ring closely contact with the inclined planes of the two bearing blocks, adjusting the angle of the workpiece mounting ring to make any indexing hole aligned with the positioning groove, and performing assistance and inspection through the positioning pin;

s5, fixing the prefabricated shroud ring integrally by using a pressing block;

s6, after the fixation is finished, the detection card is used to penetrate through the detection gap to detect whether the installation is qualified, if not, the installation is carried out again according to the steps of S3-S5, and if not, the next procedure is carried out;

s7, cutting wires used for wire cutting penetrate through the threading holes of the preprocessed shroud ring to carry out processing operation;

s8, rotating the angle of the workpiece mounting ring to align the next indexing hole with the positioning groove, performing assistance and inspection through the positioning pin, and repeating the operation of S7 to complete machining;

and S9, repeating the step S8, and finishing the wire cutting processing of all the hole sites of the preprocessed enclosing belt.

According to the invention, the preferable technical scheme is as follows: and (8) drilling a threading hole around the circumference of the shroud ring and an indexing hole on the workpiece mounting ring by the whole workpiece mounting ring in the step (S1) through a machining center, wherein the position of the threading hole corresponds to the position of the indexing hole on the workpiece mounting ring.

According to the invention, the preferable technical scheme is as follows: items for checking the state of the base in the S3 include whether the specification of the base matches with the workpiece mounting ring, whether the base is mounted in conformity with the requirements, whether the base is damaged, whether the cleaning of the base meets the requirements, and whether the screw of the pressing block of the base is loosened to facilitate the mounting.

According to the invention, the preferable technical scheme is as follows: in step S4, the diameter of the index hole and the width of the positioning groove are equal to the diameter of the positioning pin, and the positioning pin passes through the positioning groove and the index hole at the same time to indicate that the positioning is accurate.

According to the invention, the preferable technical scheme is as follows: step S4 further includes detecting the degree of adhesion between the back of the workpiece mounting ring and the mounting plate of the pedestal, wherein the gap is less than 0.03mm during adhesion.

According to the invention, the preferable technical scheme is as follows: when the pressing blocks fix the whole workpiece mounting ring in the step S5, the two pressing blocks at the lower end and the two pressing blocks in the middle of the upper end are pre-screwed, then the other four pressing blocks at the upper end are pre-screwed outwards from the middle, and finally, the four pressing blocks are completely screwed according to the same sequence.

According to the invention, the preferable technical scheme is as follows: step S6 is specifically operated to insert the detection card into the detection gap, the detection card can not pass through the space between the bearing block and the workpiece mounting ring, which shows that the workpiece mounting ring is precisely attached to the bearing block and is mounted in place; if the insertion indicates a gap between the workpiece mounting ring and the carrier block, this indicates an incorrect mounting position and requires a new mounting operation.

According to the invention, the preferable technical scheme is as follows: the thickness of the detection card is 0.02 mm.

According to the invention, the preferable technical scheme is as follows: the cutting wire is required to be parallel to the mounting plate of the base in step S7.

According to the invention, the preferable technical scheme is as follows: and inspecting the machined shroud ring, and then removing burrs.

Compared with the prior art, the technical scheme of the invention has the following advantages/beneficial effects:

1. the shroud ring of processing is treated to cooperation frock is fixed for it can carry out vertical processing, is applicable to the mode that uses the wire-electrode cutting to process, has that the processing cost is low, the burr is few, can not influence the advantage of taste material itself because of high temperature.

2. Whether be provided with the detection gap, whether can insert through detecting the card and can quickly judge whether target in place the workpiece setting, the workpiece setting ring that has the index hole and set up the constant head tank on the mounting panel cooperate the locating pin to realize quick location, guarantee the quick location of the processing in the peripheral hole of shroud.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of the machining positioning tool of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of a base part of the machining positioning tool.

Fig. 4 is a partially enlarged view at B in fig. 3.

Fig. 5 is a partially enlarged view at C in fig. 3.

Fig. 6 is a rear view of fig. 3.

Fig. 7 is a schematic structural view of a workpiece mounting ring part of the machining and positioning tool of the invention.

The labels in the figure are respectively: 1. the device comprises a base 101, a bottom plate 102, a mounting plate 103, a support plate 2, a workpiece mounting ring 201, a welding block 202, a disc body 203, an indexing hole 3, a bearing block 4, a pressing block 401, a screw mounting groove 402, an inner hexagon screw 5, a positioning groove 6, a positioning pin 7, a detection gap 8 and a shroud.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

Example (b):

a method for cutting and processing a shroud ring line is carried out based on a shroud ring processing and positioning tool and comprises the following steps:

s1, welding the shroud to be processed on the workpiece mounting ring 2 to form the whole workpiece mounting ring 2;

s2, drilling the indexing holes 203 and the shroud threading holes on the whole workpiece mounting ring 2 to obtain a prefabricated shroud whole fixed on the workpiece mounting ring 2.

S3, cleaning the whole preprocessed shroud and the base 1 installed on the machine tool, and checking the state of the base 1;

s4, integrally placing the prefabricated shroud ring on the bearing blocks 3, adjusting the workpiece mounting ring 2 to make the workpiece mounting ring closely contact with the inclined surfaces of the two bearing blocks 3, adjusting the angle of the workpiece mounting ring 2 to make any index hole 203 align with the positioning groove 5, and performing assistance and inspection through the positioning pin 6;

s5, fixing the prefabricated shroud ring integrally by using a pressing block 4;

s6, after the fixation is finished, the detection card is used to penetrate through the detection gap 7 to detect whether the installation is qualified, if the installation is not qualified, the installation is carried out again according to the steps of S3-S5, and if the installation is qualified, the next procedure is carried out;

s7, cutting wires used for wire cutting penetrate through the threading holes of the preprocessed shroud ring to carry out processing operation;

s8, rotating the angle of the workpiece mounting ring 2 to align the next indexing hole 203 with the positioning groove 5, performing assistance and inspection through the positioning pin 6, and then repeating the operation of S7 to finish machining;

and S9, repeating the step S8, and finishing the wire cutting processing of all the hole sites of the preprocessed enclosing belt.

The workpiece mounting ring 2 in the step S1 drills the threading holes around the circumference of the shroud ring and the indexing holes 203 on the workpiece mounting ring 2 through the machining center, the positions of the threading holes and the positions of the indexing holes 203 on the workpiece mounting ring 2 are correspondingly machined, so that each indexing hole 203 can be guaranteed to correspond to one threading hole, the thread cutting is carried out according to a preset program during machining after the positions of the threading holes are determined, the obtained holes are determined only, the holes to be machined are accurately positioned, the method is convenient and fast, the cost is low, and waste products are not easy to generate.

Items for checking the state of the base 1 in S3 include whether the specification of the base 1 matches the workpiece mounting ring 2, whether the mounting of the base 1 meets the requirements, whether the base 1 is damaged, whether the cleanness of the base 1 meets the requirements, whether the screws of the pressing block 4 of the base 1 are loosened to facilitate mounting, and of course, other detailed checks are also available, such as whether each component is well matched to operate, and the like, which are not described one by one.

The diameter of the index hole 203 and the width of the positioning groove 5 in step S4 are equal to the diameter of the positioning pin 6, and the positioning pin 6 passes through the positioning groove 5 and the index hole 203 at the same time to indicate that the positioning is accurate.

Step S4 further includes detecting the degree of attachment of the back of the workpiece mounting ring 2 to the mounting plate 102 of the base 1, and when the gap is smaller than 0.03mm during attachment, the workpiece mounting ring can be vertically processed after being completely attached, so that good positioning is achieved, and the precision and quality of the processed product are ensured.

When the pressing blocks 4 fix the whole workpiece mounting ring 2 in step S5, the two pressing blocks 4 at the lower end and the two pressing blocks 4 in the middle of the upper end are pre-tightened, then the other four pressing blocks 4 at the upper end are pre-tightened from the middle to the outer side, and finally are completely tightened in the same sequence, wherein the tightening follows the way of firstly tightening the middle and then tightening the two sides, firstly lightening and then weighting, so that the stress of the screws is basically consistent while the fixation is firm, and the situation that a certain screw is over-tightened or over-loosened cannot occur.

Step S6 is specifically operated to insert a detection card into the detection gap 7, and the detection card can not pass through the space between the bearing block 3 and the workpiece mounting ring 2, which indicates that the workpiece mounting ring 2 is precisely attached to the bearing block 3 and is mounted in place; if the insertion indicates a gap between the workpiece mounting ring 2 and the carrier block 3, this indicates an incorrect mounting position and requires a renewed mounting. The thickness of detection card is 0.02mm, and the thickness of detection card can carry out corresponding change according to actual production demand.

The cutting wire in step S7 is required to be parallel to the mounting plate 102 of the base 1, and the mounting plate 102 of the base 1 is mounted perpendicular to the horizontal plane during processing, i.e. the cutting wire is also perpendicular to the horizontal plane, so that the cutting wire can be more conveniently operated in actual production.

The shroud ring which is machined is inspected, then burrs are removed, the inspection is mainly to separate the machined shroud ring from the mounting block, whether the inspection meets the size requirement or not is checked, and the burrs are removed.

The following describes in detail the shroud band machining and positioning tool to which the present invention is applied. As shown in fig. 1-7, the shroud ring processing and positioning tool includes a base 1 and a workpiece mounting ring 2, the base 1 is fixed on a machine tool, a receiving block 3 is arranged on the lower portion of a mounting plate 102 of the base 1, pressing blocks 4 are arranged on the lower portion and the upper portion of the mounting plate 102, the workpiece mounting ring 2 is vertically placed on the receiving block 3, the pressing blocks 4 fix the workpiece mounting ring 2, indexing holes 203 are arranged on the workpiece mounting ring 2, positioning grooves 5 are arranged on the mounting plate 102, and positioning pins 6 simultaneously penetrate through the positioning grooves 5 and the indexing holes 203 to realize positioning. The positioning groove 5 is a vertically arranged groove, the width of the groove is equal to the diameter of the positioning pin 6, the diameter of the indexing hole 203 is equal to the diameter of the positioning pin 6, the diameters are equal but not completely equal, the diameter of the positioning pin 6 is slightly smaller than the width/diameter of the positioning groove 5 and the indexing hole 203 for facilitating the insertion of the positioning groove 5 and the indexing hole 203, and the requirement of error is met after positioning. The length of the positioning groove is set according to the condition of the workpiece mounting ring 2 which can be adapted to the tool, namely, the workpiece mounting ring 2 in a certain range can use the same tool, and the positioning groove 5 is set to be long-strip-shaped so as to adapt to the up-and-down movement of the indexing hole 203 in a certain range.

The workpiece mounting ring 2 comprises a welding block 201 and a disc body 202, the disc body 202 is annular, the thickness of the inner side is reduced to form a step, the indexing holes 203 are circularly arranged on the thinner inner side step, the circle center is consistent with the circle center of the disc body 202, the welding block 201 is circularly arranged on the thicker outer side step and is preferably arranged close to the outer side, the size of the workpiece mounting ring 2 and the number of the welding blocks 201 need to be determined according to the size of the shroud ring 8, and meanwhile, when the workpiece is welded on the welding block 201, the position correctness needs to be ensured, and the circle centers of the shroud ring 8, the workpiece mounting ring 2 and the indexing holes 203 which are circularly distributed are consistent. All the positions where the welding blocks 201 are in contact with the shroud ring 8 are provided with grooves, so that the shroud ring 8 is convenient to position.

The base 1 comprises a bottom plate 101, a mounting plate 102 and a supporting plate 103, the mounting plate 102 is mounted on the bottom plate 101, the supporting plate 103 is arranged on the back of the mounting plate 102, the supporting plate 103 is connected with the mounting plate 102 and the bottom plate 101 simultaneously, the supporting plate 103 only plays a role in stabilizing, other corresponding structures can be realized, the base is not a fixed structure, and the base can be processed and mounted without influence.

The mounting plate 102 is vertically mounted on the bottom plate 101, the upper portion of the mounting plate 102 is an arc-shaped notch corresponding to the inner side of the workpiece mounting ring 2, the mounting plate 102 is vertically mounted, linear cutting is facilitated, positioning is convenient, and the arc-shaped notch on the upper portion can be guaranteed not to be shielded in processing.

The lower pressing blocks 4 are positioned on the outer side of the workpiece mounting ring 2, the number of the lower pressing blocks is two, the lower pressing blocks are arranged on the inner side of the bearing block 3, and the outer sides can be matched with requirements; the plurality of compact heap 4 on upper portion are the arc and arrange, correspond with the inboard radian of work piece collar 2, and quantity is five, is even interval ring arrangement. The lower pressing block 4 presses the outer edge of the workpiece mounting ring 2, the upper pressing block 4 presses the inner edge of the workpiece mounting ring 2, and the disc body 202 is pressed from the inner position and the outer position.

The bearing blocks 3 are square blocks with inclined upper parts, the number of the bearing blocks is two, and the bearing blocks are symmetrically arranged on the front surface of the mounting plate 102. The receiving block 3 is actually a structure of a V-shaped positioning groove 5 with a broken middle part, and is used for positioning and receiving the workpiece mounting ring 2. There is detection gap 7 in the position that corresponds with accepting the piece 3 upper portion inclined plane on mounting panel 102, the height that detects gap 7 is 0.2mm, the effect that detects gap 7 is after fixing through compact heap 4, insert the detection card into detection gap 7, the detection card can not pass through between accepting piece 3 and the work piece collar 2, show that work piece collar 2 and accepting the piece 3 precision laminating, the installation is in place, the location is also accurate, if can insert and represent that there is the clearance between work piece collar 2 and the accepting piece 3, it is incorrect to show the mounted position, need install again. In addition, during installation, the cleanness of the workpiece installation ring 2 and the bearing block 3 needs to be ensured, and the positioning and installation accuracy cannot be influenced by impurities.

The pressing block 4 is of an L shape, and the shorter end of the pressing block 4 is attached to the mounting plate 102. One end of the pressing block 4 close to the mounting plate 102 is set to be an arc-shaped surface. The pressing block 4 is provided with a screw mounting groove 401, and a socket head cap screw penetrates through the mounting groove to movably mount the pressing block 4 on the mounting plate 102 so as to press the workpiece mounting ring 2. One end that compact heap 4 pasted tight erection column sets up to the arcwall face, sets up to the arcwall face and makes things convenient for and to have certain rotation between L type compact heap 4 and the erection column, and compact heap 4 can adjust smoothly, and the existence of screw mounting groove 401 can suitably be adjusted the position of compact heap 4, is convenient for put clamping position with work piece collar 2, and the position of adjustment compact heap 4 when compressing tightly can install fast and compress tightly.

The using method comprises the following steps: welding a shroud ring to be processed and a workpiece mounting ring together, then integrally mounting the shroud ring on a base, when mounting, ensuring the cleanness of the surface of a bearing block and the surface of a mounting plate, then contacting the outer edge of the workpiece mounting ring with the inclined surface of the upper part of the bearing block, symmetrically mounting the bearing block to form a discontinuous V-shaped groove structure, enabling the position of the workpiece mounting ring to fall at the lowest point under the action of gravity, realizing positioning, then rotating the workpiece mounting ring to enable any index hole to be aligned with a positioning groove, then screwing a pressing block to realize the positioning of the workpiece mounting ring, then plugging a detection card into a detection gap from the back of the mounting plate, wherein the installation card cannot be plugged into the gap between the workpiece mounting ring and the bearing block after representing the completion of the installation, and the installation is qualified, or reinstallating and then detecting. After the last hole is cut, the workpiece mounting ring is rotated to align the next indexing hole with the locating slot (detected and clamped using the locating pin), machining is continued, and the operation is repeated until the wire cutting of the hole used is completed.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.