Wire cutting equal division processing fixture

Abstract

The invention relates to a wire cutting equal division processing fixture, which belongs to the field of wire cutting technology. Its characteristic is that the structure includes: a precision positioning 3R film 1, a high-precision support seat 2, an upper pressure plate 3, an upper precision positioning limit block group 4, an upper positioning pin 5, a lower precision positioning limit block group 6, a lower positioning pin 7, a lower pressure plate 8, a film fixing pin 9, a first annular component group 10, and a second annular component group 11; the wire cutting equal division processing fixture overcomes the technical difficulties of conventional technology for clamping annular components, such as the cumbersome and time-consuming process, low efficiency, and difficulty in ensuring precision, and realizes off-machine pre-adjustment during the wire cutting process, eliminating the adjustment and clamping time of the annular components on the equipment, and at the same time realizes the operation of processing multiple components with one clamping, thereby improving the processing efficiency of the equipment, being simple to operate, having high processing precision, and having a low scrap rate.

Description

Technical Field

[0001] The present invention belongs to the field of wire cutting technology, relates to wire cutting equal division processing fixture technology, and is applied to the field of wire cutting processing of circular ring parts, and is particularly suitable for ring parts of various models with high precision, strict tolerance and high surface finish requirements. Background Art

[0002] Wire cutting has a wide range of applications and can process a variety of three-dimensional structures, small parts, complex assembly parts, etc. At the same time, wire cutting can also complete the processing of a variety of shapes and is widely used in the machining industry. At present, the processing method used for wire cutting of annular parts is to directly press the annular parts on the workbench for processing. This processing method is inconvenient to clamp. Because the pressing force requires the operator to operate directly on the equipment, the operator will spend a long time to adjust the leveling to the optimal state before wire cutting. The annular parts are prone to silk marks when the center is cut and it is very easy to make mistakes. The workpiece is prone to falling after wire cutting and may be damaged.

[0003] The prior art disclosed technology CN218612095U relates to an electrospark wire cutting tubular parts equal-division cutting fixture, and the application date is November 21, 2022. Its content discloses the existing tubular parts equal-division cutting fixture technology. This technology can solve the problem of cutting multiple workpieces from a tubular blank at one time. However, in this technology, the workpiece to be processed can only be processed by limiting its outer circle by the convex edge 8 of the base 1. The existence of a singleness can only meet the workpiece segmentation processing of a certain specific outer circle size. The operator needs to remove the upper clamp 3 and the clamping nut 5 for clamping and replacement. The fixation between the base 1 and the wire cutting equipment lacks precise positioning, and cannot meet the processing of annular parts of various models, high precision, strict tolerance, and high surface finish requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a wire cutting equal division processing fixture to overcome the technical difficulties of conventional technology for clamping annular parts, such as the cumbersome and time-consuming process, low efficiency and difficulty in ensuring precision, so as to ensure the processing accuracy and surface finish of the annular parts and prevent accidental damage caused by the processing process.

[0005] The technical problem solved by the present invention is to overcome the above-mentioned shortcomings by using a wire-cutting equal-division processing fixture. This allows for pre-adjustment outside the machine during wire-cut processing, eliminating the need for adjusting and clamping the annular component on the equipment. Furthermore, the fixture can process multiple components in a single clamping operation, improving processing efficiency, simplifying operation, achieving high processing precision, and reducing scrap rates. By equipping the fixture with different precision positioning limit blocks, the same fixture can be used to process a variety of components and sizes.

[0006] The technical solution of the present invention is: a wire cutting equal division processing fixture, whose structure includes: a precision positioning 3R film 1, a high-precision support base 2, an upper pressure plate 3, an upper precision positioning limit block group 4, an upper positioning pin 5, a lower precision positioning limit block group 6, a lower positioning pin 7, a lower pressure plate 8, a film fixing pin 9, a first annular component group 10, and a second annular component group 11. The connection relationship of the wire cutting equal division processing fixture is as follows: a pin hole is provided on the precision positioning 3R film 1, and the precision positioning 3R film 1 can be quickly docked with the 3R base on the wire cutting equipment for use, with repeated positioning accuracy, and can be quickly moved up and down. The workpiece is pre-installed outside the machine, and the process can be repeated directly after installation, eliminating the large amount of operation and equipment standby time of the traditional method, effectively ensuring assembly accuracy and processing accuracy.The high-precision support seat 2 is provided with a square table, a crossbeam, a main column and a disc-shaped fixed table. The square table is provided with a pin hole. The crossbeam connects the square table and the main column. The main column is provided with four clearance grooves and four precision positioning T-shaped through cavities. The top and bottom surfaces of the main column are respectively provided with pin holes. The upper and lower surfaces of the outer side of the disc-shaped fixed table are provided with annular convex edges. The convex edges limit the processed parts to prevent the processed parts from falling. The upper pressing plate 3 and the lower pressing plate 8 are respectively provided with four clearance grooves, two pin holes and special-shaped through holes. The special-shaped through holes are provided on the upper pressing plate 3 and the lower pressing plate 8 The center position of the precision positioning limit block group 4 is a through hole composed of a round hole and a square hole. The upper precision positioning limit block group 4 and the lower precision positioning limit block group 6 are in a T-shape. The upper precision positioning limit block group 4 and the lower precision positioning limit block group 6 are provided with an arc surface; the precision positioning 3R negative film 1 is in surface contact with the high-precision support seat 2, is positioned by the negative film fixing pin 9, and is fixed by bolt locking. The upper precision positioning limit block group 4 is in surface contact with the T-shaped through cavity provided on the high-precision support seat 2, and is mounted above the disc-shaped fixing platform provided on the high-precision support seat 2, and is positioned by the T-shaped hanging platform and fixed by bolt locking. The upper precision positioning limit block group 4 includes four upper precision positioning The limit blocks, the arc surfaces arranged on the four upper precision positioning limit blocks protrude from the cylindrical surface of the main cylinder arranged on the high-precision support seat 2, the radius of the arc surfaces are the same, and when processing annular parts, a cylindrical surface with the same radius can be formed to limit the inner circle of the annular parts, the upper pressure plate 3 is in surface contact with the upper surface of the high-precision support seat 2 and is fixed by bolts, and is positioned and oriented by the upper positioning pin 5, which facilitates the disassembly of the upper pressure plate 3. The upper positioning pin 5 is set to two, which are symmetrically distributed on both sides of the central axis; the lower precision positioning limit block group 6 is in surface contact with the T-shaped through cavity arranged on the high-precision support seat 2, and is equipped with a disk arranged on the high-precision support seat 2 The lower part of the high-precision support seat 2 is fixed by the lower precision positioning limit block group 6, and the arc surface provided on the four lower precision positioning limit blocks protrudes from the cylindrical surface of the main column provided on the high-precision support seat 2. The radius of the arc surface is the same. When processing the annular parts, a cylindrical surface with the same radius can be formed to limit the inner circle of the annular parts. The lower pressure plate 8 is in contact with the lower surface of the high-precision support seat 2 and is fixed by bolts. It is positioned and oriented by the lower positioning pin 7, which facilitates the disassembly of the lower pressure plate 8. The lower positioning pin 7 is set to two, which are symmetrically distributed on both sides of the center axis.

[0007] After the parts processing is completed, the wire cutting equal-division processing fixture can be removed from the equipment as a whole, and the bolts on the upper pressure plate 3 can be loosened. It is not necessary to remove the bolts completely. The circular part of the special-shaped through hole set on the upper pressure plate 3 is pushed to the bolt position. The circular part of the special-shaped through hole is larger than the nut of the bolt. The upper pressure plate 3 can be separated from the high-precision support seat 2, and the upper layer of processed parts can be taken out. The lower pressure plate 8 is used in the same way as the upper pressure plate 3, and the lower layer of processed parts can be taken out.

[0008] The wire cutting equal division processing fixture can select different upper precision positioning limit block groups 4 and lower precision positioning limit block groups 6 according to the different inner diameters of the processed annular parts. As long as the wire cutting paths to be processed are the same, the upper and lower layers of the high-precision support seat 2 can process annular parts with different inner diameters and heights. The processing accuracy can be guaranteed to be within 0.02mm. Corresponding size kits are used for workpieces of different sizes within a certain range, and the switching is convenient and fast.

[0009] The beneficial effects of the present invention are as follows: by using a wire cutting equalization processing fixture on the wire cutting equipment, the annular parts are kept in a compressed state during the cutting process, preventing the parts from falling as in traditional processing methods, effectively preventing damage to the parts. This eliminates the need for secondary clamping, facilitates operation, and allows for precise positioning. The upper and lower processing layers can process multiple annular and circular parts with different inner diameters, while completely eliminating the need for the operator to debug the parts on the equipment, understand the processing time and operation steps for the parts, thereby saving labor time, improving efficiency and equipment utilization, and increasing the yield rate of workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following is a detailed description of the embodiments with reference to the accompanying drawings.

[0011] Figure 1 This is an exploded view of the wire cutting equalization processing fixture.

[0012] Figure 2 This is the assembly drawing of the wire cutting equal division processing fixture.

[0013] Figure 3 This is a schematic diagram of the high-precision support seat 2 in the wire cutting equalization processing fixture Figure 1 .

[0014] Figure 4 This is a schematic diagram of the high-precision support seat 2 in the wire cutting equalization processing fixture Figure 2 .

[0015] Figure 5 It is the upper pressing plate 3 in the wire cutting equal division processing fixture.

[0016] Figure 6 It is the upper precision positioning limit block group 4 in the wire cutting equal division processing fixture.

[0017] Figure 7 This is a first annular component group 10 processed by a wire cutting equalization processing fixture.

[0018] In the figure, 1 is a precision positioning 3R film; 2 is a high-precision support seat; 3 is an upper pressure plate; 4 is an upper precision positioning limit block group; 5 is an upper positioning pin; 6 is a lower precision positioning limit block group; 7 is a lower positioning pin; 8 is a lower pressure plate; 9 is a film fixing pin; 10 is a first annular component group; 11 is a second annular component group. DETAILED DESCRIPTION

[0019] The specific embodiments of the invention are described in detail below with reference to technical text and drawings.

[0020] Assembly of the wire cutting equal division processing fixture: The film fixing pin 9 is installed in the pin hole processed by the precision positioning 3R film 1, the precision positioning 3R film 1 is matched with the high-precision support seat 2, and the film fixing pin 9 is installed in the pin hole processed by the high-precision support seat 2 (see Figure 3 、 4 , 5), the bolt passes through the precision positioning 3R film 1 to lock it on the high-precision support seat 2, ensuring the repeatability of the fixture positioning accuracy; the upper precision positioning limit block group 4 is respectively equipped in the T-shaped through cavity processed on the high-precision support seat 2, and the bolt passes through the upper precision positioning limit block group 4 to lock it with the high-precision support seat 2, and the first annular component group 10 is equipped on the high-precision support seat 2 and contacts and limits the upper precision positioning limit block group 4. The upper locating pin 5 is equipped in the pin hole processed on the upper surface of the high-precision support seat 2, and the pin hole processed on the upper pressure plate 3 cooperates with the upper locating pin 5 and limits the position. The upper pressure plate 3 contacts and limits the annular component surface, and the bolt passes through the upper pressure plate 3 to fix it on the high-precision support seat 2; the locating pin 5 is exposed shorter and only serves to orient the upper pressure plate 3, which facilitates the disassembly of the upper pressure plate 3 (see Figure 1 、 2 The upper and lower sides of the fixture have the same structure, and the second annular component group 11 is assembled in the same manner as above.

[0021] Implementation and use of wire cutting equal division processing fixture: After the annular parts are assembled on the wire cutting equal division processing fixture as a whole, the precision positioning 3R film 1 is quickly docked with the 3R base on the wire cutting equipment for assembly, and repeated positioning is accurate to ensure its precision and accuracy. During the cutting process, the workpiece retaining part is always in a compressed state, so the workpiece will not fall off as in traditional processing methods. After wire cutting processing, the wire cutting equal division processing fixture is removed, and the processed parts can be disassembled outside the wire cutting equipment (see Figure 7During batch production, two sets of fixtures are pre-installed with workpieces outside the machine, allowing for quick switching between upper and lower machine tools. After installation, the process can be repeated directly, eliminating the numerous operations and equipment downtime of traditional methods, making switching quick and easy. After clamping, the center points of the upper and lower annular parts are aligned, allowing for parallel cutting, resulting in two sets of parts being produced in a single pass. This fixture can also be used to process single-layer annular parts in a single pass.

[0022] The above is a superior embodiment of the present invention. It should be pointed out that for technicians in the technical field to which the present invention belongs, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. Wire cutting equal division processing fixture, characterized in that, The structure comprises: a precision positioning 3R film (1), a high-precision support seat (2), an upper pressure plate (3), an upper precision positioning limit block group (4), an upper positioning pin (5), a lower precision positioning limit block group (6), a lower positioning pin (7), a lower pressure plate (8), a film fixing pin (9), a first annular component group (10), and a second annular component group (11). The connection relationship is as follows: a pin hole is provided on the precision positioning 3R film (1), and the precision positioning 3R film (1) can be quickly docked with the 3R base on the wire cutting equipment for use; a square table, a beam, a main body are provided on the high-precision support seat (2). The column and the disc-shaped fixed platform are provided with a pin hole on the square platform, the crossbeam connects the square platform and the main column, the main column is provided with four clearance grooves and four precision positioning T-shaped through cavities, the top and bottom surfaces of the main column are respectively provided with pin holes, the upper and lower surfaces of the outer side of the disc-shaped fixed platform are provided with annular convex edges, the convex edges limit the processing parts and prevent the processed parts from falling, the upper pressing plate (3) and the lower pressing plate (8) are respectively provided with four clearance grooves, two pin holes and special-shaped through holes, and the special-shaped through holes are provided at the center positions of the upper pressing plate (3) and the lower pressing plate (8) , which is a through hole with a combination of a round hole and a square hole, the upper precision positioning limit block group (4) and the lower precision positioning limit block group (6) are in a T-shape, and an arc surface is provided on the upper precision positioning limit block group (4) and the lower precision positioning limit block group (6); the precision positioning 3R negative plate (1) is in surface contact with the high-precision support seat (2), is positioned by the negative plate fixing pin (9), and is fixed by bolt locking, the upper precision positioning limit block group (4) is in surface contact with the T-shaped through cavity provided on the high-precision support seat (2), is mounted above the disc-shaped fixing platform provided on the high-precision support seat (2), is positioned by the T-shaped hanging platform, and is locked by bolts The upper precision positioning limit block group (4) includes four upper precision positioning limit blocks. The arc surfaces provided on the four upper precision positioning limit blocks protrude from the cylindrical surface of the main body cylinder provided on the high-precision support seat (2). The arc surfaces have the same radius. When processing annular parts, a cylindrical surface with the same radius can be formed to limit the inner circle of the annular parts. The upper pressure plate (3) is in surface contact with the upper surface of the high-precision support seat (2) and is fixed by bolts. The upper positioning pins (5) are used for positioning and orientation, so as to facilitate the disassembly of the upper pressure plate (3). The upper positioning pins (5) are provided in two numbers and are symmetrically distributed on both sides of the central axis.The lower precision positioning limit block group (6) contacts the T-shaped through-cavity surface provided on the high-precision support seat (2), is mounted below the disc-shaped fixed platform provided on the high-precision support seat (2), is positioned by the T-shaped hanging platform, and is fixed by bolts. The lower precision positioning limit block group (6) includes four lower precision positioning limit blocks. The arc surface provided on the four lower precision positioning limit blocks protrudes from the cylindrical surface of the main body column provided on the high-precision support seat (2). The arc surface radius is the same. When processing annular parts, a cylindrical surface with the same radius can be formed to limit the inner circle of the annular parts. The lower pressure plate (8) contacts the lower surface of the high-precision support seat (2) and is fixed by bolts. The positioning and orientation are performed by the lower positioning pin (7), which facilitates the disassembly of the lower pressure plate (8). The lower positioning pin (7) is set to two and is symmetrically distributed on both sides of the central axis.

2. The wire cutting equalization processing fixture according to claim 1, characterized in that: After the parts processing is completed, the wire cutting equal-division processing fixture can be taken out from the equipment as a whole, the bolts on the upper pressure plate (3) are loosened, and it is not necessary to remove the bolts completely. The circular part of the special-shaped through hole set on the upper pressure plate (3) is pushed to the bolt position. The circular part of the special-shaped through hole is larger than the nut of the bolt. The upper pressure plate (3) can be separated from the high-precision support seat (2), and the parts processed on the upper layer can be taken out. The lower pressure plate (8) is used in the same way as the upper pressure plate (3) to take out the parts processed on the lower layer.

3. The wire cutting equalization processing fixture according to claim 1, characterized in that: The wire cutting equal division processing fixture can select different upper precision positioning limit block groups (4) and lower precision positioning limit block groups (6) according to the different inner diameters of the processed annular parts. As long as the wire cutting paths to be processed are the same, the upper and lower layers of the high-precision support seat (2) can process annular parts with different inner diameters and heights, and the processing accuracy can be guaranteed to be within 0.02mm. Corresponding size kits are used for workpieces of different sizes within a certain range, and the switching is convenient and fast.

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