Positioning tool for production of plasma resectoscope rings

Abstract

The utility model discloses a positioning tool for plasma electric cut ring production relates to plasma electric cut ring production technical field, the utility model discloses a support batten, the upper surface fixed bearing block of support batten, the upper surface of bearing block is set up and is placed in the trough, the both ends of placing in the trough respectively are through the opposite sides of bearing block, and the one side of bearing block is equipped with the pressure joint subassembly, and the opposite sides of pressure joint subassembly are equipped with first limit subassembly and to second limit subassembly respectively, and first limit subassembly and second limit subassembly are arranged at the both ends of support batten respectively, and the pressure subassembly is equipped between second limit subassembly and bearing block, the utility model discloses not only reasonable in structure design, convenient to use, and effectively improve the assembly efficiency and effect of plasma electric cut ring.

Description

Technical Field

[0001] This utility model belongs to the field of plasma electro-cutting ring production technology, and in particular relates to a positioning tool for plasma electro-cutting ring production. Background Technology

[0002] In existing technologies, the assembly process of plasma cutting rings relies on manual measurement of the dimensions of products with various lengths. On the one hand, manual operation is prone to errors, leading to inconsistencies in product dimensions and affecting standardization and interchangeability. On the other hand, many tooling fixtures used in the production process can only be adapted to a single step, requiring multiple fixtures to complete the production of a single product. This increases production costs, as tooling storage occupies significant factory space, and maintenance requires substantial manpower, indirectly increasing the company's expenses. Furthermore, traditional methods for fixing tubes of different diameters during plasma cutting ring assembly have serious shortcomings. Firstly, the fixing devices are often difficult to adapt to multiple tube diameters; if forcibly fixed, the tubes are prone to displacement during subsequent processes such as gluing, welding, and crimping, severely affecting the product's positioning accuracy and consequently reducing product quality. Secondly, traditional methods require frequent fixture changes, resulting in cumbersome procedures that significantly reduce production efficiency and increase labor costs. Furthermore, manual operation has many drawbacks when performing key processes such as gluing, welding, and crimping at different positions of the plasma cutting ring. On the one hand, it is difficult to accurately control the crimping position, which can easily lead to positional deviations and affect the connection accuracy and overall performance of the product components. On the other hand, manual control of the crimping force is unstable, resulting in frequent instances of insecure crimping. Moreover, in mass production, it is impossible to guarantee the consistency of crimping quality for each product, leading to inconsistent product quality. Therefore, there is an urgent need to research a positioning fixture for the production of plasma cutting rings to solve the above problems. Utility Model Content

[0003] The present invention provides a positioning fixture for the production of plasma electrocutting rings, the purpose of which is to solve the technical problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a positioning fixture for the production of plasma electrocutting rings, comprising a support strip; a bearing block is fixed on the upper surface of the support strip; a feeding groove is formed on the upper surface of the bearing block; the length direction of the feeding groove is parallel to the length direction of the support strip; the two ends of the feeding groove pass through opposite sides of the bearing block; a pressing component for limiting the product in the feeding groove is installed on one side of the bearing block; a first limiting component for limiting one end of the product and a second limiting component for limiting the other end of the product are respectively installed on opposite sides of the pressing component; the first limiting component and the second limiting component are respectively disposed at the two ends of the support strip; a clamping component for pressing the product is installed between the second limiting component and the bearing block.

[0006] As a preferred embodiment of this utility model, the pressing assembly includes a mounting plate horizontally fixed to the upper surface of a support strip and a pressing plate horizontally positioned above the mounting plate; the upper surface of the mounting plate has a pair of protrusions arranged side by side; one edge of the pressing plate is positioned directly above the material feeding groove; the upper surface of the other edge of the pressing plate has a pair of first through holes arranged side by side; each of the two first through holes is fitted with a first bolt with clearance; one end of each of the two first bolts is respectively fixedly inserted into the upper surface of the two protrusions; a tension spring is fitted onto each of the two first bolts; Two tension springs are respectively disposed in two first through holes; the lower ends of the two tension springs are respectively connected to the upper surfaces of the two protrusions; the upper ends of the two tension springs are respectively fixed to the inner walls of the two first through holes; a rotating shaft is horizontally disposed below the pressure plate; the two ends of the rotating shaft are respectively rotatably connected to the two protrusions; a movable strip is obliquely disposed between the two protrusions; the rotating shaft is fixedly inserted into the lower end of the movable strip; the lower end of the movable strip has an obliquely disposed lifting flange; the edge of the lifting flange away from the movable strip slides against the lower surface of the pressure plate.

[0007] As a preferred embodiment of this utility model, a groove is formed on the upper surface of one end of the support strip; a plurality of second through holes are formed side by side along the length of the support strip on one side of the groove; the first limiting component includes a slider slidably connected in the groove; a limiting protrusion is fixed on the upper surface of the end of the slider away from the support block; the side of the limiting protrusion near the support block can abut against one end of the product; a first receiving groove for placing one end of the product is formed on the upper surface of the slider; the first receiving groove penetrates the side of the slider near the support block; a plurality of second bolts are arranged side by side on one side of the slider; the plurality of second bolts are threaded into the plurality of second through holes respectively; one end of any one of the second bolts can abut against one side of the slider.

[0008] As a preferred embodiment of this utility model, the second limiting component includes a first protrusion fixed to the upper surface of the other end of the support strip and a baffle vertically disposed on the side of the first protrusion away from the bearing block; a pair of second receiving grooves parallel to the feeding groove are arranged side by side on the upper surface of the first protrusion; the two ends of the two second receiving grooves respectively penetrate the opposite side of the first protrusion, and the second receiving grooves are used to place the other end of the product; one side of the baffle abuts against the end of at least one second receiving groove away from the bearing block; a pair of third bolts are arranged side by side on the baffle; one end of each of the two third bolts is fixedly inserted into one side of the first protrusion.

[0009] As a preferred embodiment of this utility model, the other end of the support strip is horizontally connected to an extension strip; an L-shaped structure is formed between the extension strip and the support strip; a receiving groove is provided on the upper surface of the extension strip; the clamping assembly includes a pair of second protrusions fixed side by side to the upper surface of the support strip and a clamping clamp disposed between the two second protrusions; the arrangement direction of the two second protrusions is parallel to the length direction of the support strip; movable pieces are attached to the opposite sides of the two second protrusions; the opposite inner sides of the two movable pieces are respectively attached to the opposite sides of the clamping clamp; a third through hole is provided side by side on the opposite sides of the two second protrusions; a fourth bolt is threaded into each of the two pairs of third through holes; one end of each pair of fourth bolts abuts against the opposite outer sides of the two movable pieces; the clamping clamp is disposed in the receiving groove.

[0010] This utility model has the following beneficial effects:

[0011] 1. This utility model achieves omnidirectional positioning of the product by placing it in a feeding trough and using a pressing component to limit the product's position within the trough. Then, a first limiting component limits one end of the product, followed by a second limiting component to limit the other end. Finally, a pressing component presses the product firmly, thus ensuring efficient and effective assembly. Furthermore, this positioning fixture can be pre-set with different length positioning modules. Workers only need to select the corresponding module based on the product model to quickly and accurately determine the total length of the product, avoiding manual measurement errors and reducing adjustment time during specification changes. This ensures uniform dimensions for different product specifications, improving production stability and efficiency. Simultaneously, the positioning fixture can be pre-set with positioning bases for each pressing position. The positioning structure of the fixture precisely locks the pressing position, making it compatible with various manual, pneumatic, and electric pressing tools. This ensures uniform pressing force and accurate positioning, achieving reliable pressing at different positions, guaranteeing consistent pressing quality for batch products, and reducing rework and defective products caused by pressing problems.

[0012] 2. This utility model designs a crimping component as part of the overall tooling. This component can quickly adapt to pipes of different diameters by simply adjusting the opening and closing degree of the clamp, achieving a firm fixation and effectively preventing the pipe from shifting during processing. At the same time, it reduces the frequency of clamp replacement, simplifies the operation process, ensures the smooth progress of subsequent processes, significantly reduces the product scrap rate caused by fixation problems, and improves production efficiency.

[0013] 3. This utility model, after the product is placed in the feeding trough, with both ends of the product positioned in the first and second receiving troughs respectively, adjusts the position of the slider within the trough to cause one end of the product to abut against the side of the limiting protrusion near the bearing block, and the other end of the product to abut against the side of the baffle near the bearing block, thereby limiting the two ends of the product. This not only solves the problems of difficult size adjustment and low precision of traditional tooling, but also makes the positioning tooling suitable for positioning products of different sizes, reducing enterprise costs and maintenance expenses. In addition, by designing a total length tooling with a movable slider, operators only need to conveniently adjust the position of the slider according to the product model to quickly and accurately determine the total length of the product. This avoids errors from manual measurement and significantly reduces adjustment time when changing specifications, ensuring uniform size of products of different specifications and effectively improving production stability and efficiency.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a positioning fixture for the production of plasma electro-cutting rings according to the present invention.

[0017] Figure 2 This is a schematic diagram showing the relative positions of the support strip, the pressing assembly, the first limiting assembly, and the second limiting assembly of this utility model.

[0018] Figure 3 This is a schematic diagram showing the relative positions of the support strip, the first limiting component, and the second limiting component of this utility model.

[0019] Figure 4 This is a schematic diagram showing the relative positions of the support strip, the first limiting component, and the pressing component of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the crimping assembly of this utility model.

[0021] Figure 6 This is a diagram showing the usage status of a positioning fixture for the production of plasma electro-cutting rings according to this utility model.

[0022] Figure 7 for Figure 6 Top view of the structure.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Support strip, 2-Bearing block, 3-Crimping assembly, 4-First limiting assembly, 5-Second limiting assembly, 6-Clamping assembly, 102-Slide groove, 102-Second through hole, 103-Extension strip, 104-Accommodation groove, 201-Discharge groove, 301-Mounting piece, 302-Pressure piece, 303-Protrusion, 304-First through hole, 305-First bolt, 306-Tension spring, 307-Rotating shaft, 308-Moving strip, 309-Lifting flange, 401-Slider, 402-Limiting protrusion, 403-First receiving groove, 404-Second bolt, 501-First protrusion, 502-Baffle, 503-Second receiving groove, 504-Third bolt, 601-Second protrusion, 602-Clamping clamp, 603-Moving piece, 604-Third through hole, 605-Fourth bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Please see Figure 1As shown, this utility model is a positioning fixture for the production of plasma electro-cutting rings, including a support strip 1; a bearing block 2 is bolted to the upper surface of the support strip 1; a feeding groove 201 is formed on the upper surface of the bearing block 2; the length direction of the feeding groove 201 is parallel to the length direction of the support strip 1; the two ends of the feeding groove 201 respectively penetrate the opposite sides of the bearing block 2; the cross-section of the feeding groove 201 perpendicular to the length direction is one of V-shape, U-shape or arc shape; a pressing component 3 for limiting the product in the feeding groove 201 is installed on one side of the bearing block 2; a first limiting component 4 for limiting one end of the product and a second limiting component 5 for limiting the other end of the product are respectively installed on the opposite sides of the pressing component 3; the first limiting component 4 and the second limiting component 5 are respectively set at the two ends of the support strip 1; a pressing component 6 for pressing the product is installed between the second limiting component 5 and the bearing block 2. Figure 6-7 As shown, in use, the product is placed in the feeding trough 201, and the pressing component 3 limits the product's position within the feeding trough 201. Then, the first limiting component 4 limits one end of the product, followed by the second limiting component 5 limiting the other end. Finally, the pressing component 6 presses the product firmly, thus achieving omnidirectional positioning of the product and effectively ensuring assembly efficiency and quality. Furthermore, the relative distance between the first limiting component 4 and the second limiting component 5 can be precisely measured using a steel ruler, vernier calipers, or other dimensional measuring tools. Each component can be adjusted independently yet works in conjunction with the others, ensuring the overall functional integrity and structural adaptability of the tooling to meet different production needs.

[0028] Example 2:

[0029] Based on Example 1, as follows Figure 2 and Figure 5As shown, the crimping assembly 3 includes a mounting plate 301 horizontally bolted to the upper surface of the support strip 1 and a pressure plate 302 horizontally positioned above the mounting plate 301; the upper surface of the mounting plate 301 is integrally formed with a pair of protrusions 303 arranged side by side; one edge of the pressure plate 302 is positioned directly above the material discharge groove 201; the upper surface of the other edge of the pressure plate 302 is provided with a pair of first through holes 304 arranged side by side; each of the two first through holes 304 is fitted with a first bolt 305 with clearance; one end of each of the two first bolts 305 is respectively fixedly inserted into the upper surface of the two protrusions 303, and the first bolts 305 are threadedly connected to the protrusions 303; each of the two first bolts 305 is fitted with a tension spring 30 6; Two tension springs 306 are respectively disposed in the two first through holes 304; the lower ends of the two tension springs 306 are respectively welded to the upper surfaces of the two protrusions 303; the upper ends of the two tension springs 306 are respectively welded to the inner walls of the two first through holes 304; a rotating shaft 307 is horizontally disposed below the pressure plate 302; the two ends of the rotating shaft 307 are respectively rotatably connected to the two protrusions 303; a movable strip 308 is obliquely disposed between the two protrusions 303; the rotating shaft 307 is fixedly inserted into the lower end of the movable strip 308; the lower end of the movable strip 308 is integrally formed with an obliquely disposed lifting flange 309; the edge of the lifting flange 309 away from the movable strip 308 slides against the lower surface of the pressure plate 302. In use, the product is placed in the feeding trough 201, and the elasticity of the tension spring 306 pulls the pressure plate 302 downward, causing the lower surface of the pressure plate 302 to contact the outer wall of the product, thereby achieving product positioning and ensuring the positioning effect. In addition, the tension spring 306 is used to achieve elastic compression between the pressure plate 302 and the product to be pressed. The clamping force can also be adjusted by replacing it with a high-strength spring or a spring with other parameters, or by changing the spring's stroke. Furthermore, the pressing assembly 3, in conjunction with the current tooling design, realizes the determination of the product's overall length, product fixing, and pressing processes. It can also be used as a separate component to fix other products that need to be pressed.

[0030] Example 3:

[0031] Based on Example 2, as follows Figure 2-4As shown, a groove 102 is provided on the upper surface of one end of the support strip 1; a plurality of second through holes 102 are provided side by side along the length of the support strip 1 on one side of the groove 102; the first limiting component 4 includes a slider 401 slidably connected in the groove 102; a limiting protrusion 402 is integrally formed on the upper surface of the end of the slider 401 away from the bearing block 2; the side of the limiting protrusion 402 near the bearing block 2 can abut against one end of the product; a first receiving groove 403 for placing one end of the product is provided on the upper surface of the slider 401; the first receiving groove 403 penetrates the side of the slider 401 near the bearing block 2; the cross section of the first receiving groove 403 perpendicular to the length direction is consistent with the cross section of the feeding groove 201 perpendicular to the length direction; a plurality of second bolts 404 are arranged side by side on one side of the slider 401; the plurality of second bolts 404 are threaded into the plurality of second through holes 102 respectively; one end of any second bolt 404 can abut against one side of the slider 401; the first The second limiting component 5 includes a first protrusion 501 integrally formed on the upper surface of the other end of the support strip 1 and a baffle 502 vertically disposed on the side of the first protrusion 501 away from the support block 2; a pair of second receiving grooves 503 parallel to the feeding groove 201 are arranged side by side on the upper surface of the first protrusion 501; the two ends of the two second receiving grooves 503 respectively penetrate through the opposite side of the first protrusion 501, and the second receiving grooves 503 are used to place the other end of the product; the cross section of the second receiving groove 503 along the length direction is consistent with the cross section of the feeding groove 201 along the length direction; one side of the baffle 502 abuts against the end of at least one second receiving groove 503 away from the support block 2; a pair of third bolts 504 are inserted side by side on the baffle 502, and the third bolts 504 and the baffle 502 are clearance-fitted; one end of each of the two third bolts 504 is fixedly inserted into one side of the first protrusion 501, and the third bolts 504 and the first protrusion 501 are threadedly connected. In use, after the product is placed in the feeding trough 201, with both ends of the product positioned in the first receiving groove 403 and the second receiving groove 503 respectively, the position of the slider 401 in the sliding groove 102 is adjusted so that one end of the product abuts against the side of the limiting protrusion 402 near the bearing block 2. Then, the slider 401 is positioned by one end of the second bolt 404 abutting against one side of the slider 401, and the other end of the product abuts against the side of the baffle 502 near the bearing block 2, thereby limiting the two ends of the product. This not only solves the problems of difficult size adjustment and low precision of traditional tooling, but also makes the positioning tooling applicable to the positioning of products of different sizes, reducing the company's cost expenditure and reducing the maintenance cost of the positioning tooling. In addition, by designing a total length tooling with a movable slider 401, the operator only needs to adjust the position of the slider 401 according to the product model to quickly and accurately determine the total length of the product.It can avoid errors from manual measurement and significantly reduce adjustment time when switching specifications, ensuring uniform size of products of different specifications and effectively improving production stability and efficiency.

[0032] Example 4:

[0033] Based on Example 3, as follows Figure 2-4 As shown, an extension strip 103 is integrally formed at the other end of the support strip 1; an L-shaped structure is formed between the extension strip 103 and the support strip 1; a receiving groove 104 is formed on the upper surface of the extension strip 103; the clamping assembly 6 includes a pair of second protrusions 601 welded side by side to the upper surface of the support strip 1 and a clamping clamp 602 disposed between the two second protrusions 601; the arrangement direction of the two second protrusions 601 is parallel to the length direction of the support strip 1; the two second protrusions 601 are arranged in a parallel direction to the length direction of the support strip 1. Movable pieces 603 are attached to both sides; the inner sides of the two movable pieces 603 respectively fit against the opposite sides of the clamping pliers 602; the opposite sides of the two second protrusions 601 are provided with third through holes 604 arranged side by side; the two pairs of third through holes 604 are threaded with fourth bolts 605; one end of the two pairs of fourth bolts 605 respectively abuts against the opposite outer sides of the two movable pieces 603; the clamping pliers 602 are disposed in the receiving groove 104; the clamping pliers 602 are conventional components in the art. In use, the clamping clamp 602 is moved within the receiving groove 104 along the length of the extension strip 103. The product is then placed in the feeding groove 201, and the jaws of the clamping clamp 602 grip the product. The fourth bolt 605 is then rotated to ensure that the opposite inner surfaces of the two movable plates 603 are tightly fitted against the opposite sides of the clamping clamp 602, thus positioning the clamping clamp 602 and effectively guaranteeing the product's positioning. Furthermore, when welding or gluing processes are required, the clamping clamp 602 can be replaced with corresponding welding or gluing equipment, enabling rapid crimping, welding, and gluing processes for mass production. This design expands the tooling's applicability, protects the "replaceable crimping components + double-sided bolt synchronous positioning" solution, solves the problem of poor versatility of single-process tooling, and ensures mass production accuracy.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning fixture for the production of plasma electro-cutting rings, characterized in that, Including support strips (1); A bearing block (2) is fixed on the upper surface of the support strip (1); a feeding groove (201) is provided on the upper surface of the bearing block (2); the length direction of the feeding groove (201) is parallel to the length direction of the support strip (1); the two ends of the feeding groove (201) pass through the opposite sides of the bearing block (2); a pressing component (3) for limiting the product in the feeding groove (201) is installed on one side of the bearing block (2); a first limiting component (4) for limiting one end of the product and a second limiting component (5) for limiting the other end of the product are respectively installed on the opposite sides of the pressing component (3); the first limiting component (4) and the second limiting component (5) are respectively located at the two ends of the support strip (1); a pressing component (6) for pressing the product is installed between the second limiting component (5) and the bearing block (2).

2. The positioning fixture for plasma electro-cutting ring production according to claim 1, characterized in that, The pressing assembly (3) includes a mounting plate (301) horizontally fixed to the upper surface of the support strip (1) and a pressing plate (302) horizontally disposed above the mounting plate (301); the upper surface of the mounting plate (301) has a pair of protrusions (303) arranged side by side; one edge of the pressing plate (302) is disposed directly above the feeding groove (201); the other edge of the pressing plate (302) has a pair of first through holes (304) arranged side by side on the upper surface; both first through holes (304) are clearance-fitted. There is a first bolt (305); one end of each of the two first bolts (305) is fixedly inserted into the upper surface of the two protrusions (303); tension springs (306) are sleeved on each of the two first bolts (305); the two tension springs (306) are respectively disposed in the two first through holes (304); the lower ends of the two tension springs (306) are respectively connected to the upper surface of the two protrusions (303); the upper ends of the two tension springs (306) are respectively fixed to the inner wall of the two first through holes (304).

3. The positioning fixture for plasma electro-cutting ring production according to claim 2, characterized in that, A rotating shaft (307) is horizontally arranged below the pressure plate (302); the two ends of the rotating shaft (307) are rotatably connected to two protrusions (303); a movable strip (308) is inclinedly arranged between the two protrusions (303); the rotating shaft (307) is fixedly inserted into the lower end of the movable strip (308); the lower end of the movable strip (308) has an inclined lifting flange (309); one edge of the lifting flange (309) away from the movable strip (308) slides against the lower surface of the pressure plate (302).

4. The positioning fixture for plasma electro-cutting ring production according to claim 2 or 3, characterized in that, A groove (102) is provided on the upper surface of one end of the support strip (1); the first limiting component (4) includes a slider (401) slidably connected in the groove (102); a limiting protrusion (402) is fixed on the upper surface of the end of the slider (401) away from the bearing block (2); the side of the limiting protrusion (402) near the bearing block (2) can abut against one end of the product; a first receiving groove (403) for placing one end of the product is provided on the upper surface of the slider (401); the first receiving groove (403) penetrates the side of the slider (401) near the bearing block (2).

5. The positioning fixture for plasma electro-cutting ring production according to claim 4, characterized in that, The slide groove (102) has a plurality of second through holes (102) arranged side by side along the length of the support strip (1); the slider (401) has a plurality of second bolts (404) arranged side by side; the plurality of second bolts (404) are threaded into the plurality of second through holes (102); one end of any second bolt (404) can abut against one side of the slider (401).

6. The positioning fixture for plasma electro-cutting ring production according to claim 5, characterized in that, The second limiting component (5) includes a first protrusion (501) fixed to the upper surface of the other end of the support strip (1) and a baffle (502) vertically disposed on the side of the first protrusion (501) away from the bearing block (2); a pair of second receiving grooves (503) parallel to the feeding groove (201) are provided on the upper surface of the first protrusion (501); the two ends of the two second receiving grooves (503) respectively penetrate the opposite side of the first protrusion (501), and the second receiving grooves (503) are used to place the other end of the product; one side of the baffle (502) abuts against the end of at least one second receiving groove (503) away from the bearing block (2); a pair of third bolts (504) are interspersed on the baffle (502); one end of each of the two third bolts (504) is fixedly inserted into one side of the first protrusion (501).

7. The positioning fixture for plasma electro-cutting ring production according to claim 6, characterized in that, The clamping assembly (6) includes a pair of second protrusions (601) fixed side by side to the upper surface of the support strip (1) and a clamping clamp (602) disposed between the two second protrusions (601); the arrangement direction of the two second protrusions (601) is parallel to the length direction of the support strip (1); movable pieces (603) are attached to the opposite sides of the two second protrusions (601); the opposite inner sides of the two movable pieces (603) are respectively attached to the opposite sides of the clamping clamp (602).

8. The positioning fixture for plasma electro-cutting ring production according to claim 7, characterized in that, The two second protrusions (601) have a third through hole (604) arranged side by side on opposite sides; a fourth bolt (605) is threaded into each of the two pairs of third through holes (604); one end of each pair of fourth bolts (605) abuts against the opposite outer side of the two movable pieces (603).

9. The positioning fixture for plasma electro-cutting ring production according to claim 7 or 8, characterized in that, The other end of the support strip (1) is horizontally connected to an extension strip (103); the extension strip (103) and the support strip (1) form an L-shaped structure; the upper surface of the extension strip (103) is provided with a receiving groove (104); the clamping clamp (602) is disposed in the receiving groove (104).

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