Quick positioning wire cutting clamp for ring parts

Abstract

The application relates to the field of mechanical processing, and particularly discloses a ring-shaped part rapid positioning wire cutting clamp. The structure comprises a base, an intermediate body and a pressing block. The ring-shaped body is fixed by the pressing block and the accommodating groove on the intermediate body, the positioning inclined surface on the base is used for positioning, and the positioning column is used for rotating the intermediate body downward or upward, so that the cutting surface of the ring-shaped body is inclined, the processing of the mirror image inclined surfaces of the two ends of the plate piece is completed, and the technical problem that the processing procedure is complicated and the efficiency is low in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of machining, specifically to a quick-positioning wire EDM fixture for ring-shaped parts. Background Technology

[0002] In the field of aerospace, there are cross-sections such as Figure 1 The plate 8 shown is mainly used in aero engines. Its main function is to guide the gas inside the aero engine, ensure the stable flow of gas inside the engine, and thus ensure the normal operation of the aero engine.

[0003] However, when producing the plates, companies usually process the ring-shaped parts first. Except for the length, the ring-shaped parts are completely consistent with the plate 8. Finally, the ring-shaped parts are cut into the required plates 8. However, the plate sides 81 at both ends of the plate 8 are inclined inward. Let the angle be a°. Since the plate 8 is used in the aerospace field, the precision requirements of the mechanical parts are high. In order to ensure that the dimensions of each plate 8 meet the required accuracy, the plate sides 81 usually need to be precision machined.

[0004] In the existing technology, the finishing of plate 8 is generally carried out by wire cutting process. Usually, before wire cutting, the ring part is cut into slightly larger plates 8 using general cutting equipment. The slightly larger plates 8 are then clamped and the side 81 of the plates is processed by wire cutting equipment. After processing one side, the other side of the plate 81 is processed by rotating the plate 8 180°. In this way, the finishing of the side 81 of the plate being tilted inward by a° can be completed.

[0005] However, in the existing technology, the ring part is first cut into a slightly larger plate 8, and then the side 81 of the plate is processed by wire cutting. After processing one side of the plate 8, it is necessary to rotate 180° and re-clamp and position it before processing the other side. This makes the processing process cumbersome and inefficient. Summary of the Invention

[0006] The purpose of this invention is to provide a quick-positioning wire cutting fixture for ring parts, which solves the technical problem mentioned above in the prior art where, when processing plates, the ring part is first cut into larger plates and then wire-cut at both ends, resulting in a cumbersome processing procedure and low efficiency.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows: a quick positioning wire cutting fixture for annular parts, comprising a base, a clamping assembly for clamping the annular parts, and a positioning assembly, characterized in that: the clamping assembly is rotatably connected to the base; the positioning assembly includes a positioning wedge at the right end of the base, wherein when the cut annular part extends to the positioning wedge, the cutting surface of the annular part is coplanar with the inclined surface of the positioning wedge; and a positioning post and a positioning wedge are provided on the left side of the base, wherein the positioning wedge has a groove that cooperates with the positioning post; when the positioning post supports the clamping assembly, the reference plane is in a vertical state, and the angle between the tangent surface of the annular part at the reference plane and the reference plane is 90-a; when the clamping assembly directly cooperates with the positioning wedge, the angle between the tangent surface of the annular part at the reference plane and the vertical plane is 90+a.

[0008] The beneficial effects of this implementation plan are as follows:

[0009] 1. In existing technology, when processing plates, the annular part is first cut into slightly larger plates, and then wire cutting is used to finish the sides of the plates. In this solution, the annular part is fixed in the receiving groove using an intermediate body and a pressure block. The distance between the receiving groove and the positioning wedge on the base is used to accurately position the cut plates. This eliminates the need to cut the plates into slightly larger plates before finishing, skipping this step and improving processing efficiency.

[0010] 2. The sides of the plates are all inclined inward at an angle of 'a'. Existing technology requires wire cutting one end of the plate first, then rotating the plate 180° after wire cutting, clamping it, and wire cutting the other end. This process is complex. In this solution, the clamping assembly and base rotate, and the base has a positioning bevel. Therefore, when processing the plates, if… Figure 7 As described above, a positioning post is installed on the groove, the intermediate body is lifted and rotated upwards along the rotation axis, resulting in the angle between the tangent of the annular body at the reference plane and the reference plane being 90-a. This allows the wire cutting wire to cut perpendicularly to obtain a plate side inclined inwards by a°. After machining one end, it is only necessary to push the annular part forward to press against the positioning wedge, lift the intermediate body, and remove the positioning post, as shown. Figure 8 As shown, the intermediate body fits snugly against the base, resulting in the angle between the tangent of the annular part at the reference plane and the vertical plane being 90+a. This allows the wire EDM cutting wire to cut vertically to obtain the other side inclined inward by a°. Compared with existing methods, this application does not require readjustment of the clamping or rotation of the workpiece. Its efficiency is greatly improved.

[0011] 3. In existing technologies, the ring-shaped part is first pre-cut into slightly larger plates and then wire-cut for precision machining. However, this solution directly performs wire-cut precision machining on the ring-shaped part in one step, thus reducing the loss of plate material, increasing the number of plates produced from the same ring-shaped part, saving costs, and being more environmentally friendly.

[0012] Furthermore, the clamping assembly includes an intermediate body with a receiving groove for accommodating the annular component. A pressing block, which can be pressed into the receiving groove, is connected to the top surface of the intermediate body. The bottom of the receiving groove is an arc-shaped curved surface with the same curvature as the annular component. This matching curvature of the receiving groove ensures that the annular component fits snugly against the bottom of the receiving groove when pressed within the receiving cavity, preventing it from easily wobbling.

[0013] Furthermore, the bottom surface of the pressure block is provided with a pressing protrusion integral with the pressure block, and the outer contour dimension of the pressing protrusion is consistent with the inner contour dimension of the receiving groove. The pressing protrusion design consistent with the receiving groove allows the pressure block to enter the receiving groove when pressing down on the annular part, and the concave curvature of the receiving groove is consistent with that of the annular part. Therefore, when the pressure block presses down on the annular part, it is consistent with the curvature of the bottom of the receiving groove, and the curvature of the annular body will not be deformed.

[0014] Furthermore, the side of the positioning wedge facing the receiving groove is an inclined surface, and the angle between the inclined surface and the bottom surface of the positioning wedge is 90°+a°. The design of the inclined surface allows the ring to be pushed forward during the second cut, so that the inclined side of the ring cut in the first cut can fit against the inclined surface, making it easier to push the ring against the inclined surface during actual operation.

[0015] Furthermore, the groove is located in the middle of the positioning slope of the base. The groove in the middle allows the intermediate body to be pressed firmly against the positioning post under the action of gravity, so that the positioning post is on the central axis of the intermediate body and can provide good support for the intermediate body.

[0016] Furthermore, the intermediate body has a recess located directly above the groove, which mates with the positioning post. This changes the contact between the positioning post and the intermediate body from a surface contact to a three-dimensional contact when the positioning post lifts the intermediate body, making the overall fixture more stable.

[0017] Furthermore, a pin is provided, and an ear plate is provided at the lower end of the intermediate body. The ear plate has a pin hole for the intermediate body, and the base has a pin hole for the base. The intermediate body and the base are rotatably connected by the pin passing through the pin hole of the intermediate body and the pin hole of the base in sequence. The design of the pin makes the base, intermediate body, and pressure plate easy to disassemble. When not in use, they can be disassembled for easy cleaning of dust and debris, and for oiling and maintenance. Attached Figure Description

[0018] Figure 1 This is a front view of the clamping plate of the present invention.

[0019] Figure 2 This is a schematic diagram of the combined state of an embodiment of the present invention.

[0020] Figure 3This is an exploded view of an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the pressure block according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the interbody in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the base according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the first cutting state after clamping the annular part according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the second cutting state after clamping the annular part in an embodiment of the present invention. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method:

[0027] The reference numerals in the accompanying drawings include: base 1, positioning inclined surface 11, horizontal end 12, left frame 13, groove 131, right frame 14, positioning inclined block 15, inclined surface 151, base pin hole 16, positioning post 2, intermediate body 3, receiving groove 31, ear plate 32, intermediate body pin hole 33, cutting reference surface 34, intermediate body bolt hole 35, pressure block 4, pressure block bolt hole 41, pressing protrusion 42, pressing surface 421, bolt 5, pin 6, ring part 7, plate 8, plate side 81, cutting wire 9.

[0028] Implementation, for example, attached Figures 1-8 As shown: A quick positioning wire cutting fixture for annular parts includes a base 1, a clamping assembly and a positioning assembly. The clamping assembly includes an intermediate body 3 and a pressure block 4. The base 1 and the intermediate body 3 of the clamping assembly are hinged by a pin 6. The pressure block 4 is fixedly connected to the intermediate body 3 by bolts 5. A receiving groove 31 for accommodating annular parts 7 is provided between the pressure block 4 and the intermediate body 3. The positioning assembly includes a positioning rod 2, a positioning inclined surface 11 and a positioning inclined block 15. The positioning inclined surface 11 and the positioning inclined surface 15 are disposed on the base 1.

[0029] by Figure 6The direction is described. The center of the base 1 is hollowed out. The left end of the left and right central axis is the positioning slope 11, and the right end is the horizontal end 12. A left frame 13 is provided on the left side of the positioning slope 11. The left frame 13 has a groove 131 in the middle for positioning the positioning post. A right frame 14 is provided on the right side of the horizontal end 12. A positioning slope 15 integrally formed with the base 1 is provided in the middle of the right frame 14. The side of the positioning slope 15 facing the direction of the central hollow is an inclined surface 151. A base pin hole 16 is provided on the side wall of the base directly below the intersection of the positioning slope 11 and the horizontal end 12. The base pin hole 16 is provided on both the front and rear sides of the base 1 and is coaxially arranged.

[0030] The pin hole 16 on the base 1 is hinged to the intermediate body 3 via the pin 6, thereby gradually clamping it in place. Figure 5 The direction is described. The upper surface of the intermediate body 3 has a downwardly concave receiving groove 31. The downward concavity of the receiving groove 31 matches the curvature of the annular part 7, allowing the annular part 7 to fit snugly against the bottom surface of the receiving groove 31. The width of the receiving groove 31 matches the width of the annular part 7, preventing wobbling when the annular part 7 is fixed in the receiving groove 31. Ear plates 32, integral with the intermediate body, are located at the front and rear corners of the lower right side of the intermediate body 3. Ear plates 32 have intermediate body pin holes 33, allowing the pin 6 to pass through the intermediate body pin holes 33 and the base pin holes 16 in sequence, rotatably connecting the intermediate body 3 to the base 2. The right end face of the intermediate body 3 is a precision-machined cutting reference surface 34, allowing the annular part 7 to be positioned when being cut. Bolt holes 35 are located at the four corners of the upper surface of the intermediate body 3.

[0031] Intermediate body 3 is fixedly connected to pressure block 4 by bolt 5, so as to Figure 4 To indicate direction, a pressing protrusion 42, integral with the pressing block, is provided at the center of the lower bottom surface of the pressing block 4. The lower bottom surface of the pressing protrusion 42 is curved, and the curvature of the curved surface matches the curvature of the receiving groove 31 in the center of the intermediate body 3. Therefore, when the pressing block presses down on the annular part 7, it can fit into the receiving cavity 31 in the center of the intermediate body, thus better fixing the annular part 7. Pressing block bolt holes 41 are provided at the four corners of the pressing block 4, so the pressing block 4 and the intermediate body 3 can be fixed by tightening the bolts 5 sequentially through the pressing block bolt holes 41 and the intermediate body bolt holes.

[0032] by Figure 3 The direction is the direction of description. Since the pin 6 passes through the pin hole 16 of the base and the pin hole 33 of the intermediate body in sequence to rotatably connect the intermediate body 3 to the base 1, the intermediate body 3 can rotate upward around the pin 6. Since there is a groove 131 in the middle of the left side frame 13 of the base 1, the intermediate body can be lifted by placing the positioning post 2 into the groove 131, so that the angle between the tangent of the annular body at the reference plane and the reference plane is 90-a. The intermediate body 3 has a recess that cooperates with the positioning post at the position directly above the groove 131.

[0033] The specific implementation process is as follows:

[0034] When cutting plate 8 begins, the technician places the annular piece 7 into the receiving groove 31 of the intermediate body 3, tightens the bolt 5 to move the pressure block 4 downwards, and presses the clamping protrusion 42 downwards into the receiving groove 31 to clamp the annular piece 7; after clamping the annular piece 7, as... Figure 7 As shown, lift the intermediate body 3 upwards and place the positioning post 2 into the groove 131, so that the intermediate body 3 presses on the positioning post 2 under the action of gravity. Since the lower end of the intermediate body 3 is lifted by the positioning post 2, the reference surface of the intermediate body 3 is in a vertical state. The angle between the tangent surface of the annular part at the reference surface and the reference surface is 90-a. After the adjustment is completed, the first cut is performed. Therefore, when the cutting line 9 cuts the annular part 7, it will cut out an inclined surface of a°.

[0035] After the cutting is completed, as follows Figure 8 As shown, loosen bolt 5 and remove positioning post 2. Since the left end of base 1 has positioning inclined surface 11, the intermediate body 3 rotates downward and fits against the positioning inclined surface, causing the intermediate body 3 to lift upward. The angle between the tangent surface of the annular part at the reference plane and the vertical plane is 90+a. Then push the annular body 7 forward and press it against the inclined surface 151 of the positioning inclined block 15 of base 1. Tighten bolt 5 to fix the annular body 7. After the adjustment is completed, perform the second cut. Therefore, when the cutting line 9 cuts the annular part 7, it will cut an inclined surface of a° that is mirrored with the first cut.

[0036] By repeating the above steps, products such as Figure 1 The plate 8 shown is inclined inward at a° on both ends of the plate 8.

[0037] Of course, the angle of the positioning slope 11 and the height of the positioning column 2 can also be adjusted to produce plates with an inward tilt angle of not a°.

[0038] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A quick-positioning wire cutting fixture for annular parts, comprising a base, a clamping assembly for pressing the annular part, and a positioning assembly, characterized in that: The clamping assembly is rotatably connected to the base; The clamping assembly includes an intermediate body and a pressure block. The upper top surface of the intermediate body has a downwardly concave receiving groove, the downward concavity of which matches the curvature of the annular part. The lower bottom surface of the pressure block has a pressing protrusion integral with the pressure block, the lower bottom surface of which is an arc surface, the curvature of which matches the curvature of the receiving groove in the middle of the intermediate body. The intermediate body is fixedly connected to the pressure block by bolts. The right end face of the intermediate body is the precision cutting reference surface. Therefore, when cutting the ring-shaped part, the cutting reference surface is used to position the ring-shaped part. The positioning component includes a positioning wedge block located at the right end of the base, and a positioning post and a positioning wedge surface located at the left side of the base. The positioning wedge surface is provided with a groove that cooperates with the positioning post. When the cut annular part extends to the positioning wedge block, the cut surface of the annular part is coplanar with the inclined surface of the positioning wedge block. When the positioning post supports the clamping assembly, the reference plane is in a vertical state, and the angle between the tangent of the ring part on the reference plane and the reference plane is 90-a; when the clamping assembly directly engages with the positioning inclined plane, the angle between the tangent of the ring part on the reference plane and the vertical plane is 90+a.

2. The ring-shaped quick positioning wire cutting fixture according to claim 1, characterized in that: The side of the positioning wedge facing the receiving groove is an inclined surface, and the angle between the inclined surface and the bottom surface of the positioning wedge is 90+a.

3. The ring-shaped quick positioning wire cutting fixture according to claim 1, characterized in that: The groove is located in the middle of the positioning slope of the base.

4. The ring-shaped quick positioning wire cutting fixture according to claim 2, characterized in that: The intermediate body has a recess located directly above the groove that mates with the positioning post.

5. The ring-shaped quick positioning wire cutting fixture according to claim 2, characterized in that: It is also provided with a pin shaft, and the lower end of the intermediate body is provided with an ear plate. The ear plate is provided with a pin shaft hole for the intermediate body, and the base is provided with a pin shaft hole for the base. The intermediate body and the base are rotatably connected by the pin shaft passing through the pin shaft hole of the intermediate body and the pin shaft hole of the base in sequence.

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