Wire cutting processing device

Abstract

The invention relates to the technical field of linear cutting, and particularly discloses a linear cutting machining device which comprises a base installed on a linear cutting machine tool, a positioning part for conducting six-point positioning on a blade body is arranged on the base, and a pressing head is arranged above the positioning part and used for limiting and fixing a part. A to-be-machined face on the part is a vertical plane, a molybdenum wire on the cutting machine takes the side face of the base below the to-be-machined face as a positioning reference face, and when the molybdenum wire cuts the to-be-cut face, wire moving is horizontal wire moving. The invention aims to overcome the defects of complex processing, difficulty in cleaning residues, high cost and complex device when the traditional low-temperature alloy is poured to transfer the positioning reference.

Description

Technical Field

[0001] The invention relates to the field of pre-cutting technology, and in particular to a wire cutting processing device. Background Art

[0002] The turbine guide vane of an aircraft engine is composed of a number of high-guide blades evenly distributed in the circumferential direction to form an annular structure. It is a stator part of the turbine. The turbine guide vane is mainly composed of blades, inner and outer rings and other components. Several blades are usually processed as independent parts and positioned and installed between the inner and outer rings. Therefore, large and small mounting plates that match the inner and outer rings are provided at both ends of the blades. That is, the relative relationship between the blades is determined by the matching relationship between the mounting plate and the inner and outer rings. This puts forward requirements on the processing accuracy of the mounting plate. Usually, the processing accuracy of the mounting plate needs to be controlled within 0.01mm.

[0003] The large and small mounting plates of the high guide vanes are set in a diamond structure. When installing the high guide vanes, it is necessary to pay special attention to the fact that the high guide vanes are evenly distributed and form a ring state. This distribution feature determines that during the installation process, the installation edges (i.e. the short sides of the large and small mounting plates) on the mounting plates distributed on both sides of the blade body edge and the cooperation with the inner and outer rings play a major positioning role.

[0004] In the field of blade processing, there are many problems with the common processing methods. Blades are usually formed by casting and a single-side margin of 1.5-2mm is reserved. Since the blade body is irregular in shape and structure, high precision requirements and small thickness are required, manual grinding is mainly used to correct the blade body. After grinding, the mounting plate needs to be milled and ground. The mounting plate plays a positioning role for the installed blade body, so the milling and grinding mounting plate needs to use the blade body as the positioning basis. However, due to the large force during the milling and grinding process, and the thin blade body, this easily leads to blade deformation. In order to solve this problem, when the mounting plate is milled, the positioning reference on the blade body is usually transferred to the mounting plate by rotation positioning. At present, rotation positioning usually uses six-point positioning to position the blade body, and then pours low-temperature alloy on the side of the mounting plate, using the side of the formed low-temperature alloy as the positioning reference, and melts the low-temperature alloy after completing the milling and grinding process.

[0005] However, the infusion of cryogenic alloys requires a relatively high cost investment, including the procurement of cryogenic alloy materials and the equipment and technical support required for the infusion process. Secondly, the entire process is lengthy and complicated. From the six-point positioning of the blades, to the infusion and solidification of the cryogenic alloy, to the subsequent milling and grinding and melting of the cryogenic alloy, each link requires a lot of time and manpower, which seriously affects production efficiency. Furthermore, due to the numerous process steps, the required equipment is also relatively complex. Not only special infusion equipment and melting equipment are required, but also the coordinated operation of various equipment must be ensured, which undoubtedly increases the purchase, maintenance and management costs of the equipment. Finally, the infusion of cryogenic alloys is prone to produce excess materials, which may have an adverse effect on processing accuracy and product quality, and also increase the workload of subsequent cleaning and inspection. Summary of the invention

[0006] In view of the deficiencies in the prior art, the technical problem solved by the present invention is to provide a wire cutting processing device, which effectively overcomes the disadvantages of complex processing, difficult to clean residue, high cost and complex device when transferring positioning references through traditional pouring of low-temperature alloys.

[0007] In order to solve the above problems, the technical solution adopted by the present invention is: a wire cutting processing device, including a base installed on a wire cutting machine tool, a positioning part for positioning the blade body at six points is provided on the base, and a pressure head is provided above the positioning part to press the blade body and position the mounting plate on both sides of the positioning part; the surface to be processed is located on the mounting edge of the mounting plate and on the vertical plane, and the molybdenum wire on the cutting machine uses the side of the base under the surface to be processed as the positioning reference plane, and the wire running direction of the molybdenum wire when cutting the surface to be cut is horizontal.

[0008] The principle of this solution is that the blade body is positioned at six points through the positioning part on the base, which can accurately and stably determine the position of the blade in the processing space to avoid unnecessary movement or rotation during the processing. The pressure head located above the positioning part further limits and fixes the part, thereby enhancing the stability of the part during processing and reducing the position deviation caused by vibration or external force. Since the surface to be processed on the part is a vertical plane, the side of the base is used as the positioning reference plane, which provides a clear and reliable reference for the wire running of the molybdenum wire. The molybdenum wire is cut in the horizontal wire running method to cut the surface to be cut. This horizontal wire running can ensure the consistency and accuracy of the cutting and reduce the cutting error caused by unstable or irregular wire running direction.

[0009] The entire solution takes into account positioning, fixation and wire feeding methods, so that high-precision, high-efficiency and high-stability processing effects can be achieved during the blade wire cutting process.

[0010] The beneficial effects of this program are:

[0011] (1) Low processing cost. The prior art uses the method of pouring low-temperature alloys to perform secondary positioning of parts. The cost of low-temperature alloy materials is high, and the costs of pouring and core removal processes are also relatively high. However, this solution uses wire cutting processing, which does not require the use of low-temperature alloy materials, avoids high material and process costs, and thus reduces processing costs. At the same time, wire cutting processing does not produce excess materials, thus avoiding additional costs incurred by cleaning excess materials.

[0012] (2) High processing efficiency. In the prior art, the solidification and subsequent processing of low-temperature alloys require a certain amount of time, which increases the production time. In this solution, wire cutting can quickly complete the reference processing, greatly shortening the production cycle and improving production efficiency. The processing parameters of wire cutting can be precisely controlled, so that the blade reference processed each time has higher consistency and repeatability, reducing the time wasted on adjusting the processing parameters, further improving the processing efficiency. In addition, during the wire cutting process, there is no large force when the molybdenum wire is wire-cutting the mounting plate, causing deformation or damage.

[0013] (3) The processing flow is streamlined. The method of pouring low-temperature alloys in the prior art is relatively complicated, and alloy overflow or unnecessary residues may form inside the parts, which is difficult to clean. However, this solution uses wire cutting to re-find the reference for processing after six-point positioning. The whole process is relatively simple and does not require complex pouring and core removal processes, which reduces the cumbersome links in the processing flow and simplifies the processing flow. In addition, wire cutting does not require a lot of force to limit the parts, reducing the risk of part deformation and further improving the reliability and stability of the processing.

[0014] Furthermore, the positioning part includes a supporting middle plate, a supporting side plate, a side positioning pin, a first positioning plate, a second positioning plate, and an inclined part. The supporting side plate is provided with a side positioning pin located in the middle position thereof close to the right end surface and fixedly connected thereto; a supporting middle plate is provided between the supporting side plate and the pressure plate seat, and the supporting middle plate is provided with a first positioning plate and a second positioning plate which mutually form a Y-shaped structure to set a limiting groove. One end of the first positioning plate and the second positioning plate are arranged with an inner eight intersecting inclined surface, and the supporting surfaces of the two are arranged in parallel and crosswise. The positioning device is installed on the online cutting machine tool to perform six-point positioning on the blade The plane formed by the length direction and the feed direction of the wire cutting tool coincides with the surface to be processed of the mounting plate of the high guide vane. Through the coordinated action of multiple components such as the supporting side plate, the side locating pins, the first locating plate, and the second locating plate, the six-point positioning of the blade is achieved, which can more stably and accurately fix the position of the blade, reduce the displacement and deviation during the processing, and improve the processing accuracy. The plane formed by the length direction and the feed direction of the wire cutting tool coincides with the surface to be processed of the mounting plate of the high guide vane, which makes the tool feed smoother and more accurate, which is beneficial to improving the processing efficiency and accuracy.

[0015] Furthermore, a pressure plate seat is provided on the base, and an inclined portion with an inclined angle is fixed on the pressure plate seat. The inclined portion is provided with a pressure plate screw which is vertically connected to and passes through the pressure plate screw. A pressure plate head is provided at the lower end of the pressure plate screw. Through the vertical connection of the pressure plate screw on the inclined portion, the position of the pressure plate head and the pressure applied can be flexibly adjusted to adapt to workpieces of different sizes and shapes to ensure a good fixing effect. Due to the existence of the inclined portion, the pressure plate device can better adapt to the inclination of the workpiece surface, ensure uniform pressure distribution, enhance the reliability of fixation, and at the same time can be applicable to a variety of workpieces with different inclined surfaces or special shapes, thereby increasing the versatility and applicability of the equipment.

[0016] Furthermore, the base is in a cross-shaped structure, including a thin cross portion and a thick cross portion, with supporting side plates and a pressure plate seat installed at both ends of the thin cross portion, and a supporting middle plate fixed on the thick cross portion. The base of the cross-shaped structure, the thin cross portion and the thick cross portion can be designed to reasonably distribute weight and provide supporting force according to the functions and stress conditions of different components. The thin cross portion is used to install the supporting side plates and the pressure plate seat that are relatively light and mainly play a positioning role, while the thick cross portion is responsible for fixing the supporting middle plate that is heavier and plays a main supporting role, so that the force of the entire structure is more uniform and stable. Through the design of different thicknesses, stronger support and connection are provided at key parts, which enhances the overall structural strength and stability of the base and can better withstand various forces and vibrations during the processing process.

[0017] Furthermore, the pressure plate seat and the supporting side plates are vertically arranged with the supporting middle plate, the supporting side plates are fitted with the supporting middle plate, there is a gap between the pressure plate seat and the supporting middle plate, and the supporting side plates are fitted with the supporting middle plate, which provides more stable support for the sides of the blades and helps to position the blades more accurately.

[0018] Furthermore, the pressure plate screw is arranged perpendicularly to the inclined portion, and the perpendicular arrangement ensures that the pressure applied by the pressure plate screw can be directly and effectively transmitted to the pressed object, reducing the dispersion and loss of force, thereby enhancing the fixing effect on the parts.

[0019] Furthermore, the first positioning plate and the second positioning plate are arranged in a Y-shaped structure with each other, and there are two of them. The two Y-shaped structures can position the blade from different directions and positions, increase the contact points and support points for positioning, and limit the movement of the blade in all directions, thereby providing a more stable and reliable positioning effect, and can better adapt to the complex shape and contour of the blade, especially for blades with irregular shapes, which can fit more closely and improve the accuracy of positioning.

[0020] Furthermore, the top of the supporting middle plate is an inclined conical structure inclined along one side of the plate pressing head. The inclined conical structure can avoid interference with the top of the supporting middle plate during the pressing process of the plate pressing head, ensuring that the plate pressing head can smoothly apply pressure to the parts and improving the convenience of operation.

[0021] Furthermore, the plate pressing head is made of aluminum material, which reduces the impact on parts. Aluminum is relatively soft and is not easy to cause scratches, indentations or other physical damages on the surface of parts when it comes into contact with parts, thereby protecting the surface quality of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the clamping parts of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the present invention;

[0025] Figure 4 It is a top view of the structure of the present invention;

[0026] Figure 5 It is a left side view of the present invention;

[0027] Figure 6 It is a right side view of the present invention;

[0028] Figure 7 It is a left side view of the parts clamping of the present invention;

[0029] Figure 8 It is a schematic diagram of parts clamping of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the positioning part in the present invention. DETAILED DESCRIPTION

[0031] The reference numerals in the drawings of the specification include: base 1, pressure plate seat 2, supporting middle plate 3, supporting side plate 4, pressure plate screw 5, pressure plate head 6, side positioning pin 7, first positioning plate 8, second positioning plate 9, inclined portion 10, hexagonal nut 11, supporting surface 12, Y-shaped groove 13, part 14, thin cross portion 15, thick cross portion 16, first cutting surface 17, second cutting surface 18, third cutting surface 19, fourth cutting surface 20, positioning portion 21

[0032] Example 1

[0033] Basically as attached Figure 1-9As shown: A wire cutting processing device includes a base 1 installed on a wire cutting machine tool. The base 1 is a cross-shaped structure, including a thin cross portion 15 and a thick cross portion 16. Support side plates 4 and a pressure plate seat 2 are respectively installed at both ends of the thin cross portion 15, and a support middle plate 3 is fixed on the thick cross portion 16. This structure makes the base 1 more evenly and stably stressed, can better withstand various forces and vibrations during processing, enhance the structural strength of the base 1, and ensure stable support.

[0034] At the same time, the surface to be processed on the part 14 is a vertical plane, through which are the first cutting plane 17, the second cutting plane 18, the third cutting plane 19 and the fourth cutting plane 20. The molybdenum wire on the cutting machine uses the side of the base 1 under the surface to be processed as the positioning reference plane, and the molybdenum wire is set to be horizontal when cutting the surface to be cut.

[0035] The supporting side plate 4 is provided with a side locating pin 7 which is located in the middle position close to the right end face and fixedly connected thereto. A supporting middle plate 3 is provided between the supporting side plate 4 and the pressure plate seat 2. The supporting middle plate 3 is provided with a first locating plate 8 and a second locating plate 9 which mutually form a Y-shaped structure to set a Y-shaped groove 13. There are two of them, one end of which is an inner eight and an intersecting inclined surface. The supporting surfaces 12 of the two are cross-set and parallel. The positioning part is installed on the base to perform six-point positioning on the blade. The plane formed by the feeding direction of the wire-cut molybdenum wire coincides with the surface to be processed of the mounting plate of the high-guide blade, which can more accurately fix the blade position, reduce displacement and deviation during processing, improve processing accuracy, make the tool feed smoother and more accurate, improve processing efficiency, achieve precise positioning, and improve processing accuracy and efficiency.

[0036] A pressure plate seat 2 is provided on the base 1, and an inclined portion 10 with an inclined angle is fixed on the pressure plate seat 2. A pressure plate screw 5 is provided on the inclined portion 10, which is vertically matched and connected to the pressure plate seat and passes through. A pressure plate head 6 is provided at the lower end of the pressure plate screw 5. By adjusting the position of the pressure plate screw 5 on the inclined portion 10, the pressure size and position of the pressure plate head 6 can be flexibly changed to adapt to workpieces of different sizes and shapes, ensure uniform distribution of pressure, enhance fixation reliability, and be suitable for a variety of workpieces with different inclined surfaces or special shapes. It can flexibly adapt to different workpieces and ensure stable fixation.

[0037] The pressure plate seat 2 and the supporting side plate 4 are both arranged vertically with the supporting middle plate 3. The supporting side plate 4 fits with the supporting middle plate 3 to provide more stable support for the sides of the blades and help to accurately position the blades. There is a gap between the pressure plate seat 2 and the supporting middle plate 3 to facilitate adjustment and maintenance, improve positioning accuracy, and facilitate operation and maintenance.

[0038] The pressing plate screw 5 is vertically arranged to the inclined portion 10, ensuring that the pressure is directly and effectively transmitted to the pressed object, thereby enhancing the fixing effect and the fixing stability.

[0039] The first positioning plate 8 and the second positioning plate 9 are arranged in a Y-shaped structure to position the blades from different directions and positions, adapt to blades with complex shapes, improve positioning accuracy and stability, enhance positioning effects, and adapt to various blade shapes.

[0040] The top of the supporting middle plate 3 is an inclined tapered structure along one side of the plate pressing head, which avoids interference when the plate pressing head is pressed down, ensures smooth application of pressure, improves operational convenience, facilitates operation, and ensures pressure application.

[0041] The plate pressure head is made of aluminum material, which is not easy to cause damage when in contact with parts, thus protecting the surface quality of parts and components.

[0042] The surface to be processed on the part 14 is a vertical plane, and the molybdenum wire on the cutting machine uses the side of the base 1 under the surface to be processed as the positioning reference plane. The molybdenum wire is set to be horizontal when cutting the surface to be cut.

[0043] Example 2

[0044] First, a blade of a certain type to be processed is placed steadily on the base 1. At this time, the blade is accurately positioned from multiple directions and positions using the positioning portion 21 composed of the side positioning pins 7 on the supporting side plate 4 and the first positioning plate 8 and the second positioning plate 9 on the supporting middle plate 3 to ensure that the position of the blade on the base 1 is accurate, providing a stable foundation for subsequent cutting processing.

[0045] After positioning is completed, the pressure plate screw 5 is adjusted so that the pressure plate head 6 slowly presses down and compacts the blade. This operation further enhances the stability of the blade during processing and minimizes possible displacement.

[0046] Next, the base 1 is used as a reference plane for positioning to determine the starting position and direction of cutting. Since the cutting surfaces of the blades, namely the first cutting surface 17, the second cutting surface 18, the third cutting surface 19 and the fourth cutting surface 20 are all vertically arranged, the molybdenum wire maintains a wire-feeding method parallel to the cutting surface during cutting.

[0047] The first cutting surface 17 is cut first, and after the first cutting surface 17 is cut, the second cutting surface 18, the third cutting surface 19 and the fourth cutting surface 20 are cut in sequence. During the entire cutting process, thanks to the reasonable structural design of the base 1 and the coordinated cooperation between the various components, the blade always maintains a stable position, and the molybdenum wire achieves precise cutting in a horizontal wire-feeding manner.

[0048] After verification by practical application, this cutting step method not only effectively ensures the processing quality of the blade, but also significantly reduces the processing cost and improves production efficiency, fully demonstrating the outstanding practical value and significant economic benefits of the blade wire cutting processing device.

[0049] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and deformations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A wire cutting processing device, characterized in that: It includes a base installed on a wire cutting machine, a positioning part for positioning a blade body at six points is provided on the base, a pressure head is provided above the positioning part to press and fix the blade body so as to position the mounting plate on both sides of the positioning part; the surface to be processed is located on the mounting edge of the mounting plate and on a vertical plane, the molybdenum wire on the cutting machine uses the side of the base under the surface to be processed as a positioning reference plane, and the wire running direction of the molybdenum wire when cutting the surface to be cut is horizontal.

2. A wire cutting processing device according to claim 1, characterized in that: The positioning part includes a supporting middle plate, a supporting side plate, a side positioning pin, a first positioning plate, a second positioning plate, and an inclined part. The supporting side plate is provided with a side positioning pin located in the middle position thereof close to the right end face and fixedly connected thereto; a supporting middle plate is provided between the supporting side plate and the pressure plate seat, and the supporting middle plate is provided with a first positioning plate and a second positioning plate which mutually form a Y-shaped structure to set a limiting groove. One end of the first positioning plate and the second positioning plate are inclined surfaces which are arranged in an inner eight and intersecting, and the supporting surfaces of the two are arranged in parallel and crosswise. The positioning device is installed on a wire cutting machine tool to perform six-point positioning on the blade, and the plane formed by the length direction and the feed direction of the wire cutting tool coincides with the surface to be processed of the mounting plate of the high guide blade.

3. A wire cutting device according to claim 1, characterized in that: The base is provided with a pressure plate seat, on which an inclined portion with an inclined angle is fixed, and on the inclined portion a pressure plate screw rod which is vertically connected and penetrates the pressure plate screw rod is provided, and at the lower end of the pressure plate screw rod a pressure plate head is provided.

4. A wire cutting processing device according to claim 1, characterized in that: The base is in a cross-shaped structure, including a thin cross portion and a thick cross portion, the two ends of the thin cross portion are respectively installed with a supporting side plate and a pressure plate seat, and the thick cross portion is fixed with a supporting middle plate.

5. A wire cutting processing device according to claim 4, characterized in that: The pressure plate seat and the supporting side plates are both arranged vertically with the supporting middle plate, the supporting side plates are fitted with the supporting middle plate, and there is a gap between the pressure plate seat and the supporting middle plate.

6. A wire cutting processing device according to claim 3, characterized in that: The pressing plate screw is arranged perpendicularly to the inclined portion.

7. A wire cutting device according to claim 2, characterized in that: The first positioning plate and the second positioning plate are arranged in a Y-shaped structure with each other, and there are two of them.

8. A wire cutting processing device according to claim 2, characterized in that: The top of the supporting middle plate is an inclined conical structure inclined along one side of the plate pressing head.

9. A wire cutting processing device according to claim 3, characterized in that: The plate pressing head is a plate pressing head made of aluminum material.

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