A positioning device for equally dividing an annular thin-walled part by using a wire cutting machine

Abstract

The utility model discloses a kind of positioning device of equal division annular thin-walled part using wire cutting machine, belong to annular piece cutting positioning technical field, including positioning plate, tool boss, compression member, at least two equal division cutting grooves and limiting piece;Arc-shaped guide surface is equipped on tool boss;The structure of this device is simple, the clamping cutting of annular thin-walled part can be realized by positioning plate, tool boss and compression member, without using index head and bottom plate like prior art, reduce the device quantity required by clamping, without additional constraint device, procurement manufacturing cost is saved;Meanwhile, when clamping cutting, using arc-shaped guide surface can ensure that annular thin-walled part is in concentric state when cutting, positioning speed is fast, the step of carrying out concentric calibration to annular thin-walled part is saved, while clamping step is simple, shorten the process time of clamping and cutting.

Description

Technical Field

[0001] This utility model relates to the field of ring-shaped component cutting and positioning technology, specifically to a positioning device for equally dividing a ring-shaped thin-walled component using a wire cutting machine. Background Technology

[0002] After the main body of the annular thin-walled component used in gas turbines is processed, it needs to be divided into equal parts using wire cutting equipment. The thin-walled component has the characteristics of large diameter, easy deformation, and difficult clamping.

[0003] Traditional processing methods are usually as follows: Method 1: Using an indexing head for machining. First, prepare a plate larger than the diameter of the part (thickness not less than 30mm). The flatness of the plate should be controlled within 0.02. Drill holes (including pressing holes and threading holes) using a drilling machine or CNC equipment. The number of threading holes should be consistent with the number of equal divisions required for the part. Lock the plate onto the indexing head and ensure that the concentricity of the plate and the indexing head is not greater than 0.02. Place the part on the plate and ensure that the concentricity of the part and the plate is not greater than 0.02-0.05 (depending on the indexing accuracy requirements of the part). Program the cutting of the part. After the first cut, rotate the indexing head according to the set degree to process the next section. Method 2: Using indexing fixtures for machining. First, prepare a plate larger than the diameter of the part (thickness not less than 30mm). The flatness of the plate should be controlled within 0.02. Use CNC equipment to machine the same number of planes as the part on the outer shape. Mill notches in the center of the planes. Correct the planes during machining and take the data at the notches. Use CNC equipment to machine the wire-passing holes. Place the part on the plate and correct the concentricity of the part and the plate to be no greater than 0.02-0.05 (depending on the indexing accuracy requirements of the part). Write a program to cut the part. After machining one section, correct the plane of the next section and take the data at the notches. Machin the next position.

[0004] Using traditional processing methods requires preparing an indexing head, purchasing a base plate, and processing the base plate, which is time-consuming and costly. The entire set of process equipment is heavy and inconvenient to load and unload, and the accuracy of the indexing head determines the accuracy of the division. Secondly, using traditional processing methods, the concentricity of the base plate and the indexing head, as well as the concentricity of the part and the indexing head, needs to be corrected to extremely high precision, which increases the cost of clamping the parts. Considering that thin-walled parts have relatively large deformation, in order to achieve a high degree of concentricity, the parts need to be constrained, which adds additional design and clamping costs. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for equally dividing annular thin-walled parts using a wire cutting machine, which solves the problems of long processing time, high cost, and inconvenient loading and unloading when equally dividing annular thin-walled parts in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A positioning device for equally dividing annular thin-walled parts using a wire EDM machine, comprising: A positioning plate, which is used to place the annular thin-walled component and forms the axial positioning reference surface of the annular thin-walled component; A tooling boss is provided on the positioning plate, and the tooling boss has an arc-shaped positioning surface; the arc-shaped positioning surface matches the curvature of the inner wall of the annular thin-walled part; the axis of the arc-shaped positioning surface coincides with the theoretical axis of the annular thin-walled part; A clamping component is detachably connected to the tooling boss or the positioning plate; the clamping component is used to apply axial clamping force to make the lower end face of the annular thin-walled component press against the positioning plate. At least two equally divided cutting grooves, both of which penetrate the thickness direction of the tooling boss and the positioning plate, and the center planes of each cutting groove are arranged at equally divided angles. A limiting member is detachably mounted on the positioning plate and / or the tooling boss; the limiting member is used to position the cross-section formed after two cuts of the annular thin-walled part.

[0007] A further technical solution is that the number of clamping components is two; both clamping components are provided on the tooling boss.

[0008] A further technical solution is that the clamping component includes a clamping block and a clamping bolt; the tooling boss has a tooling threaded hole; the clamping bolt passes through the clamping block and is threadedly connected to the tooling threaded hole to apply axial clamping force to the annular thin-walled component.

[0009] A further technical solution is that the clamping block includes a pressing part; when the clamping block presses against the annular thin-walled part, the pressing part simultaneously presses against the tooling boss.

[0010] A further technical solution is that the limiting member is detachably disposed at the intersection of the positioning plate and the tooling boss.

[0011] A further technical solution is that the tooling boss is provided with a positioning groove extending radially; the positioning plate is provided with a positioning threaded hole; the limiting member includes a limiting block and at least one limiting bolt; the limiting block is embedded in the positioning groove; the limiting bolt passes through the limiting block and is threadedly connected to the positioning threaded hole.

[0012] A further technical solution is that the number of the equally divided cutting grooves is two; the equally divided cutting grooves include a first equally divided groove and a second equally divided groove.

[0013] A further technical solution is that the limiting block has a limiting surface; the limiting surface is used to contact the cross-section; the limiting surface is located directly above the first equally divided groove.

[0014] A further technical solution is that the limiting block has at least one limiting guide hole; the positioning plate is provided with a guide pin; and the limiting block is slidably sleeved on the guide pin through the limiting guide hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This device has a simple structure. It can clamp and cut annular thin-walled parts through a positioning plate, tooling boss, and clamping parts. Unlike existing technologies, it does not require an indexing head and base plate, reducing the number of clamping devices needed and eliminating the need for additional constraint devices, thus saving procurement and manufacturing costs. At the same time, during clamping and cutting, the arc-shaped guide surface ensures that the annular thin-walled parts are in a concentric state during cutting, resulting in fast positioning speed and eliminating the need for concentric calibration of the annular thin-walled parts. In addition, the clamping steps are simple, shortening the clamping and cutting process time. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a three-dimensional view of the positioning device of this utility model.

[0017] Figure 2 This is a three-dimensional view of the positioning plate of this utility model.

[0018] Figure 3 This is a three-dimensional diagram illustrating the application of the positioning device of this utility model.

[0019] Figure 4 This is a three-dimensional diagram showing another application of the positioning device of this utility model.

[0020] Figure 5 This utility model Figure 4 A magnified view of a portion of point A in the middle.

[0021] Figure 6 This is a three-dimensional view of the limiting component of this utility model.

[0022] Icons: 1-Positioning plate, 2-Tooling boss, 3-Clamping part, 4-Limiting part, 5-Annular thin-walled part, 6-Arc-shaped positioning surface, 7-Equally divided cutting groove, 8-Clamping block, 9-Clamping bolt, 10-Tooling threaded hole, 11-Clamping part, 12-Positioning groove, 13-Limiting block, 14-Limiting bolt, 15-Positioning threaded hole, 16-Positioning guide hole, 17-Guide pin. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Example: like Figures 1-6 As shown, this utility model provides a positioning device for equally dividing annular thin-walled parts using a wire EDM machine, including a positioning plate 1, a tooling boss 2, a clamping member 3, and a limiting member 4; the positioning plate 1 is horizontally arranged and used to place the annular thin-walled part 5 to form an axial positioning reference surface for the annular thin-walled part 5; the tooling boss 2 is provided on the positioning plate 1, and the tooling boss 2 has an arc-shaped positioning surface 6; the arc-shaped positioning surface 6 matches the curvature of the inner wall of the annular thin-walled part 5; the axis of the arc-shaped positioning surface 6 coincides with the theoretical axis of the annular thin-walled part 5; the clamping member 3 is detachably connected to the tooling boss 2 or the positioning plate 1 (in this embodiment, it is installed on...). (On the tooling boss 2); the clamping member 3 is used to apply axial clamping force to make the lower end face of the annular thin-walled part 5 stick to the positioning plate 1; the limiting member 4 is detachably set on the positioning plate 1 and / or the tooling boss 2 (in this embodiment, it is installed at the intersection of the tooling boss 2 and the positioning plate 1); the limiting member 4 is used to position the cross-section formed after two cuts of the annular thin-walled part 5; at least two equally divided cutting grooves 7 are opened on the arc-shaped positioning surface 6, and the two equally divided cutting grooves 7 penetrate through the thickness direction of the tooling boss 2 and the positioning plate 1, and the center planes of each cutting groove are arranged at equally divided angles to realize the equally divided cutting of the annular thin-walled part 5.

[0025] The principles and beneficial effects of the above technical solution: Place the device on the worktable of the wire EDM machine, then place the annular thin-walled part 5 on the positioning plate 1, so that its inner wall fits against the arc-shaped positioning surface 6. Then, use the clamping member 3 to apply axial pressure to clamp the annular thin-walled part 5. Then, use the wire EDM machine to cut the annular thin-walled part 5. The wire passes through the equal-division cutting groove 7 to cut the annular thin-walled part 5. By pre-calibrating the movement path of the wire when cutting in the equal-division cutting groove 7 to point to the center, it can be ensured that the extension line of the cutting path passes through the center of the annular thin-walled part 5. This can ensure the consistency of the cross-section of the equal parts after the annular thin-walled part 5 is divided. After cutting the next equal part, install and position the limiting member 4, then release the clamping member 3 and move the cut annular thin-walled part 5 so that its cross-section contacts and fits against the positioning member. Use the clamping member 3 again to position and clamp. Then, cut the annular thin-walled part 5 into equal parts in sequence until all parts are cut.

[0026] This device has a simple structure. It can clamp and cut the annular thin-walled part 5 using a positioning plate 1, a tooling boss 2, and a clamping part 3. Unlike existing technologies, it does not require an indexing head and a base plate, reducing the number of clamping devices required and eliminating the need for additional constraint devices, thus saving procurement and manufacturing costs. At the same time, during clamping and cutting, the arc-shaped guide surface ensures that the annular thin-walled part 5 is in a concentric state during cutting, resulting in fast positioning speed and eliminating the need for concentric calibration of the annular thin-walled part 5. The clamping process is also simple, shortening the clamping and cutting process time.

[0027] In this embodiment, there are two clamping components 3; both clamping components 3 are provided on the tooling boss 2. The clamping component 3 includes a clamping block 8 and a clamping bolt 9; the clamping block 8 has a clamping hole; the tooling boss 2 has a tooling threaded hole 10 coaxial with the clamping hole; the clamping bolt 9 passes through the clamping hole and is threadedly connected to the tooling threaded hole 10, so as to drive the clamping block 8 to clamp the annular thin-walled component 5 from one end, so as to apply an axial clamping force to the annular thin-walled component 5, so that the other end of the annular thin-walled component 5 is attached to the positioning plate 1.

[0028] The principles and beneficial effects of the above technical solution: By setting two clamping parts 3, the number of positions for the annular thin-walled part 5 can be increased, thus improving the stability of the positioning.

[0029] In this embodiment, the clamping block 8 includes an integrally formed pressing part 11; the cross-sectional shape of the clamping block 8 is L-shaped; when the clamping block 8 presses against the annular thin-walled part 5, the pressing part 11 simultaneously presses against the tooling boss 2.

[0030] The principles and beneficial effects of the above technical solution: The clamping block 8 adopts an L-shaped cross-section integral molding structure. The horizontal part is used to clamp the upper end face of the annular thin-walled part 5, and the abutting part 11 is used to fit with the tooling boss 2 to form a stable support.

[0031] In this embodiment, the limiting member 4 is detachably disposed at the intersection of the positioning plate 1 and the tooling boss 2; the tooling boss 2 is provided with a positioning groove 12 extending radially; the limiting member 4 includes a limiting block 13 and two limiting bolts 14; the limiting block 13 is embedded in the positioning groove 12; the positioning plate 1 is provided with two positioning threaded holes 15; the limiting block 13 is provided with two limiting holes coaxial with the positioning threaded holes; the limiting bolts pass through the corresponding limiting holes and are threadedly connected to the corresponding positioning threaded holes to fix the position of the limiting block 13.

[0032] The principles and beneficial effects of the above technical solution: The limiting block 13 is embedded in the radial positioning groove 12 of the tooling boss 2 and is fixed to the positioning plate 1 by a limiting bolt, forming a detachable circumferential positioning reference. After the first cut, the limiting block 13 is adjusted so that its limiting surface fits the cut section to ensure the equal division accuracy of subsequent cuts.

[0033] In this embodiment, there are two equal-division cutting grooves 7; the equal-division cutting groove 7 includes a first equal-division groove and a second equal-division groove. The limiting block 13 has a limiting surface, which is used to contact the cross section and is located directly above the first equal-divided groove.

[0034] The principles and beneficial effects of the above technical solution: The double-groove design directly provides an initial equal division benchmark, avoiding errors from manual scribing; the limiting surface is parallel to the first groove, ensuring that the cumulative error of multiple cuts is controllable, so that after the first cut, the limiting surface automatically aligns with the machined surface, eliminating angular deviations during the second clamping of the workpiece and improving the consistency of batch processing.

[0035] In this embodiment, the limiting block 13 has two limiting guide holes; the positioning plate 1 has two positioning guide holes 16; the positioning guide holes 16 are fitted with corresponding guide pins 17; the limiting block 13 is slidably sleeved on the corresponding guide pins 17 through the limiting guide holes.

[0036] The principles and beneficial effects of the above technical solution: The cooperation of the two guide pins 17 improves the stability of the limit block 13, effectively resists the lateral force caused by cutting vibration, and avoids accidental movement during cutting, which would affect the cutting accuracy.

[0037] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine, characterized in that: include A positioning plate, which is used to place the annular thin-walled component and forms the axial positioning reference surface of the annular thin-walled component; A tooling boss is provided on the positioning plate, and the tooling boss has an arc-shaped positioning surface; the arc-shaped positioning surface matches the curvature of the inner wall of the annular thin-walled part; the axis of the arc-shaped positioning surface coincides with the theoretical axis of the annular thin-walled part; A clamping component is detachably connected to the tooling boss or the positioning plate; the clamping component is used to apply axial clamping force to make the lower end face of the annular thin-walled component press against the positioning plate. At least two equally divided cutting grooves, both of which penetrate the thickness direction of the tooling boss and the positioning plate, and the center planes of each cutting groove are arranged at equally divided angles. A limiting member is detachably mounted on the positioning plate and / or the tooling boss; the limiting member is used to position the cross-section formed after two cuts of the annular thin-walled part.

2. The positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 1, characterized in that: The number of clamping components is two; both clamping components are provided on the tooling boss.

3. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 1 or 2, characterized in that: The clamping component includes a clamping block and a clamping bolt; the tooling boss has a tooling threaded hole; the clamping bolt passes through the clamping block and is threadedly connected to the tooling threaded hole to apply axial clamping force to the annular thin-walled component.

4. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 3, characterized in that: The clamping block includes a pressing part; when the clamping block presses against the annular thin-walled part, the pressing part simultaneously presses against the tooling boss.

5. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 1, characterized in that: The limiting component is detachably mounted at the intersection of the positioning plate and the tooling boss.

6. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 5, characterized in that: The tooling boss is provided with a positioning groove extending radially; the positioning plate is provided with a positioning threaded hole; the limiting member includes a limiting block and at least one limiting bolt; the limiting block is embedded in the positioning groove; the limiting bolt passes through the limiting block and is threadedly connected to the positioning threaded hole.

7. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 6, characterized in that: The number of equal-division cutting grooves is two; the equal-division cutting grooves include a first equal-division groove and a second equal-division groove.

8. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 7, characterized in that: The limiting block has a limiting surface; the limiting surface is used to contact the cross-section; the limiting surface is located directly above the first equally divided groove.

9. A positioning device for equally dividing annular thin-walled parts using a wire cutting machine according to claim 6, characterized in that: The limiting block has at least one limiting guide hole; the positioning plate is provided with a guide pin; the limiting block is slidably sleeved on the guide pin through the limiting guide hole.

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