Outer ring mortise machining device

Abstract

The utility model discloses an outer ring mortise machining device which comprises a medium-speed wire cutting machine tool and a tool. The tool comprises a support, the lower end of the support is fixedly connected to a cross beam of the medium-speed wire cutting machine tool, and the upper end face of the support is inclined to the lower end face of the support. The upper end of the support is fixedly connected with an index plate, the upper end of the index plate is coaxially and rotationally connected with a part clamping plate used for being fixedly connected with an outer ring part, a plurality of index holes are formed in the index plate in the circumferential direction, a plug pin hole is formed in the part clamping plate, and a pin shaft is coaxially inserted into the plug pin hole and one index hole. The tool is used for replacing an elbow, the surface machining quality can be guaranteed, meanwhile, the medium-speed wire cutting machine tool adopts pulse discharge machining, stress is not generated in the machining process, an outer ring part is not prone to deformation, and the quality of an outer ring finished product can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of outer ring tenon and groove processing of a gas turbine compressor, and in particular relates to an outer ring tenon and groove processing device. Background Art

[0002] The outer ring tenon and groove of the gas turbine compressor is the mother part for assembling the gas turbine engine blades. It has the characteristics of high tenon and groove position accuracy, equal division of the circumference and must be evenly distributed.

[0003] Currently, outer ring mortises are typically milled using a custom tool with an elbow on a CNC five-axis machining center. However, using this custom tool with an elbow reduces the milling force and the finish of the finished product. Furthermore, the outer ring is susceptible to deformation due to stress during milling, and stress on the mortise and tenon surface after milling can make dimensional assurance difficult, reducing the yield rate of the finished product. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides an outer ring tenon-groove processing device, which can improve the quality of the outer ring finished product.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] An outer ring mortise and tenon processing device, comprising a medium-speed wire cutting machine tool and a tooling;

[0007] The tooling includes a bracket, the lower end of the bracket is fixedly connected to the crossbeam of the medium-speed wire cutting machine, and the upper end face of the bracket is inclined to the lower end face of the bracket; the upper end of the bracket is fixedly connected to a dividing plate, and the upper end of the dividing plate is coaxially connected to a part clamping plate for fixing the outer ring part, and a plurality of dividing holes are arranged along the circumference of the dividing plate, and a pin hole is arranged on the part clamping plate, and a pin shaft is coaxially inserted into the pin hole and one of the dividing holes.

[0008] The beneficial effects of adopting the above technical solution are as follows: after the pin is inserted into the pin hole and a dividing hole, the outer ring part can be fixed on the crossbeam of the medium-length wire-cutting machine tool along with the part chuck, so that it is convenient to use the medium-length wire-cutting machine tool to process a tenon of the outer ring part; after rotating the part chuck and inserting the pin into the pin hole and another dividing hole, it is convenient to process another tenon of the outer ring part; that is, the outer ring tenon processing device can be used to process multiple tenons on the outer ring, thereby obtaining a finished tenon product; in addition, the use of tooling instead of the elbow can ensure the surface processing quality. At the same time, the medium-length wire-cutting machine tool adopts pulse discharge processing, and no stress is generated during the processing. The outer ring part is not easy to deform, which is beneficial to improve the quality of the outer ring finished product.

[0009] In one embodiment, a core rod is coaxially rotatably connected to the indexing plate, and the upper end of the core rod coaxially passes through the spacer and the part clamping plate and is threadedly connected to a nut. The spacer is located between the indexing plate and the part clamping plate.

[0010] The beneficial effects of adopting the above technical solution are: the parts clamping plate and the indexing plate can be rotated relative to each other by means of the core rod, and can be locked by means of the pad and the nut.

[0011] In one embodiment, a first connecting hole for rotating the connecting core rod is coaxially provided on the dividing plate, and a second connecting hole for installing the core rod and the bearing is coaxially provided on the part clamping plate. The aperture of the first connecting hole and the aperture of the upper end of the second connecting hole both match the shaft diameter of the core rod, and the aperture of the lower end of the second connecting hole matches the shaft diameter of the bearing.

[0012] The beneficial effects of adopting the above technical solution are: the dividing plate uses the first connecting hole to rotate the connecting core rod, and the part clamping plate uses the lower end of the second connecting hole to rotate the connecting bearing, thereby realizing a rotating connection with the core rod, which is conducive to smoother rotation of the part clamping plate.

[0013] In one embodiment, a washer is coaxially arranged outside the spacer block, and the washer is located between the indexing plate and the part clamping plate.

[0014] The beneficial effect of adopting the above technical solution is that the indexing plate and the parts clamping plate can be arranged so as to achieve smooth rotation, thereby saving the operator effort during the rotation process.

[0015] In one embodiment, an indexing hole is provided on the outer side of the indexing plate.

[0016] The beneficial effect of adopting the above technical solution is that the indexing hole is arranged relatively far away from the center of the indexing disk, which is conducive to reducing the indexing error.

[0017] In one embodiment, a centering device used as an X-axis reference and a leveling device used as a Y-axis reference are provided on one side of the part clamping plate.

[0018] The beneficial effect of adopting the above technical solution is: such an arrangement facilitates providing an X-direction reference and a Y-direction reference for machining the outer ring tenon groove on a medium-speed wire cutting machine tool.

[0019] In one embodiment, the centering device includes a centering rod disposed on one side of the part clamping plate, and the axis of the centering rod perpendicularly intersects the axis of the indexing plate and the axis of one indexing hole.

[0020] In one embodiment, the leveling device includes a leveling surface provided on one side of the part clamping plate, and the centering rod is perpendicular to the leveling surface.

[0021] In one embodiment, the indexing hole and the pin hole are both through holes.

[0022] The beneficial effect of adopting the above technical solution is that the arrangement facilitates the insertion or removal of the pin.

[0023] In one embodiment, the crossbeam of the medium-speed wire cutting machine is fixedly connected to a base, and the upper end of the base is fixedly connected to the bracket.

[0024] The beneficial effect of adopting the above technical solution is that the bracket is fixed on the crossbeam of the medium-speed wire cutting machine through the base.

[0025] The beneficial effects of the present invention are:

[0026] After the pin is inserted into the pin hole and one indexing hole, the outer ring part can be fixed on the crossbeam of the medium-length wire-cutting machine tool along with the part chuck, so that it is convenient to use the medium-length wire-cutting machine tool to process a tenon of the outer ring part; after rotating the part chuck and inserting the pin into the pin hole and another indexing hole, it is convenient to process another tenon of the outer ring part; that is, the outer ring tenon processing device can be used to process multiple tenons on the outer ring, thereby obtaining a finished tenon product; in addition, using tooling instead of the elbow can ensure the surface processing quality. At the same time, the medium-length wire-cutting machine tool adopts pulse discharge processing, and no stress is generated during the processing. The outer ring part is not easy to deform, which is beneficial to improve the quality of the outer ring finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0028] Figure 1 Shows a schematic structural diagram of the lower part of the utility model;

[0029] Figure 2 Shows Figure 1 Right view;

[0030] Figure 3 Shows a schematic structural diagram of the utility model;

[0031] Figure 4 Shows a top view of the present invention;

[0032] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0033] Reference numerals:

[0034] 1-base, 2-bracket, 3-indexing plate, 4-spacer, 5-core rod, 6-indexing hole, 7-washer, 8-parts chuck, 9-outer ring part, 10-pin hole, 11-nut, 12-centering rod, 13-flat surface. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] The utility model provides an outer ring tenon groove processing device, such as Figure 1-4 As shown, it includes a medium-length wire cutting machine and a tooling; the tooling includes a bracket 2, the lower end of the bracket 2 is fixedly connected to the crossbeam of the medium-length wire cutting machine, and the upper end face of the bracket 2 is inclined to the lower end face of the bracket 2; the upper end of the bracket 2 is fixedly connected to a dividing plate 3, and the upper end of the dividing plate 3 is coaxially rotatably connected to a part clamping plate 8 for fixing and connecting an outer ring part 9, and a plurality of dividing holes 6 are circumferentially arranged on the dividing plate 3, and a pin hole 10 is arranged on the part clamping plate 8, and a pin shaft is coaxially inserted into the pin hole 10 and a dividing hole 6.

[0037] It can be understood that after the pin is inserted into the pin hole 10 and a dividing hole 6, the outer ring part 9 can be fixed on the crossbeam of the medium-length wire cutting machine along with the part chuck 8, so that it is convenient to use the medium-length wire cutting machine to process a tenon of the outer ring part 9; after rotating the part chuck 8 and inserting the pin into the pin hole 10 and another dividing hole 6, it is convenient to process another tenon of the outer ring part 9; that is, the outer ring tenon processing device can be used to process multiple tenons on the outer ring, thereby obtaining a finished tenon; in addition, the use of tooling instead of the elbow can ensure the surface processing quality. At the same time, the medium-length wire cutting machine adopts pulse discharge processing, and no stress is generated during the processing. The outer ring part 9 is not easy to deform, and it is easy to ensure dimensional accuracy, which is beneficial to improve the quality of the outer ring finished product.

[0038] In addition, the utility model utilizes a lower-cost medium-wire wire cutting machine to process the outer ring part 9, which can save equipment procurement and maintenance costs; the utility model does not require the use of elbows, which can avoid the reduction of cutting force due to the use of elbows, thereby avoiding the problem of poor finish of the mortise and tenon; the medium-wire operation and programming of the utility model are simple, which reduces the requirements for operators and reduces labor costs; the utility model uses molybdenum wire as an electrode, and by writing different programs, it can process various types of mortise and tenon such as dovetail grooves and fir-tree grooves, and has strong processing adaptability. At the same time, there is no need to customize special milling cutters or other tools, which can save lead time and costs.

[0039] It should be noted that the dividing plate 3 can be bolted to the bracket 2; the bracket 2 adopts an integral tripod design and is welded to ensure its stability; the lower and upper end faces of the bracket 2 are polished using a CNC machining center after welding to ensure that their flatness is not greater than 0.05mm; the upper and lower end faces of the dividing plate 3 are both polished using a CNC machining center and fine-ground using a grinder to ensure that their flatness is not greater than 0.02mm.

[0040] It should also be noted that the number of indexing holes 6 on the indexing plate 3 is set according to the number of tenons on the outer ring part 9 of the gas turbine compressor to be processed. All indexing holes 6 are punched, drilled, expanded and reamed by a center drill to ensure their accuracy; the angular relationship between the indexing holes 6 and the indexing holes 6 is guaranteed by the program of the CNC machining center to further reduce the indexing error; the pin holes 10 are set on the part clamping plate 8 according to the position of the indexing holes 6 on the indexing plate 3 and the preset number of indexing groups.

[0041] It should also be noted that a locking plate is provided between the outer ring part 9 and the part clamping plate 8 to fix the outer ring part 9 on the part clamping plate 8 .

[0042] In one embodiment, a core rod 5 is coaxially connected to the indexing plate 3, and the upper end of the core rod 5 coaxially passes through the spacer 4 and the part clamping plate 8 and is threadedly connected to a nut 11. The spacer 4 is located between the indexing plate 3 and the part clamping plate 8.

[0043] It is understandable that the parts clamping plate 8 and the indexing plate 3 can generate relative rotation by means of the core rod 5 , and can be locked by means of the spacer block 4 and the nut 11 .

[0044] In one embodiment, a first connecting hole for rotating the connecting core rod 5 is coaxially provided on the dividing plate 3, and a second connecting hole for installing the core rod 5 and the bearing is coaxially provided on the part clamping plate 8. The aperture of the first connecting hole and the aperture of the upper end of the second connecting hole both match the axial diameter of the core rod 5, and the aperture of the lower end of the second connecting hole matches the axial diameter of the bearing.

[0045] It can be understood that the dividing plate 3 uses the first connecting hole to rotate the connecting core rod 5, and the part clamping plate 8 uses the lower end of the second connecting hole to rotate the connecting bearing, thereby realizing the rotational connection with the core rod 5, which is conducive to smoother rotation of the part clamping plate 8.

[0046] In one embodiment, a washer 7 is coaxially provided outside the cushion block 4, and the washer 7 is located between the dividing plate 3 and the part clamping plate 8, so that the dividing plate 3 and the part clamping plate 8 can rotate smoothly, thereby saving the operator effort during the rotation process.

[0047] In one embodiment, a graduation hole 6 is provided on the outer side of the graduation plate 3 so that the graduation hole 6 is relatively far away from the center of the graduation plate 3, thereby facilitating reduction of graduation errors.

[0048] In one embodiment, a centering device for serving as an X-direction reference and a leveling device for serving as a Y-direction reference are provided on one side of the part clamping disk 8, so as to provide an X-direction reference and a Y-direction reference for conveniently processing the outer ring tenon groove by the medium-speed wire cutting machine.

[0049] In one embodiment, Figure 4As shown, the centering device includes a centering rod 12 arranged on one side of the part clamping disk 8, and the axis of the centering rod 12 intersects perpendicularly with the axis of the dividing disk 3 and the axis of a dividing hole 6; the leveling device includes a leveling surface 13 arranged on one side of the part clamping disk 8, and the centering rod 12 is perpendicular to the leveling surface 13.

[0050] It should be noted that after installing the centering rod 12, use a three-coordinate machine to verify that the angle between it and the part clamping plate 8 is correct and then use it as the reference for the X-axis centering of the part, while the flat surface 13 is used as the reference for the Y-axis when processing the part.

[0051] In one embodiment, the indexing hole 6 and the pin hole 10 are both through holes to facilitate the insertion or removal of the pin.

[0052] In one embodiment, the crossbeam of the medium-length wire-cutting machine tool is fixedly connected to the base 1 , and the upper end of the base 1 is fixedly connected to the bracket 2 , that is, the bracket 2 is fixed to the crossbeam of the medium-length wire-cutting machine tool through the base 1 .

[0053] It should be noted that the base 1 is polished using a CNC machining center and finely ground using a grinder to ensure that the flatness of the upper and lower end surfaces of the base 1 is within 0.02 mm; in addition, the base 1 is connected to the bracket 2 and the crossbeam bolts on the medium-speed wire cutting machine.

[0054] When using the utility model to process the outer ring part 9, first clamp the outer ring part 9 between the part clamping plate 8 and the indexing plate 3, calibrate the concentricity of the outer ring part 9 and the center of the indexing plate 3 to within 0.05mm, and calibrate the part clamping plate 8 so that the center of the plate jumps within a range of 200mm along the dividing rod 12 is no more than 0.1mm; then insert the pin into the pin hole 10 and the dividing hole 6 to achieve indexing; in addition, when processing the first mortise and tenon, use the flat surface 13 as the Y-direction reference, and use the dividing rod 12 to determine the X-direction starting position.

[0055] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0056] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.

Claims

1. An outer ring mortise and tenon processing device, characterized in that: Including medium-speed wire cutting machine tools and tooling; The tooling comprises a bracket (2), the lower end of the bracket (2) is fixedly connected to the crossbeam of the medium-speed wire cutting machine, and the upper end face of the bracket (2) is inclined to the lower end face of the bracket (2); the upper end of the bracket (2) is fixedly connected to a dividing plate (3), the upper end of the dividing plate (3) is coaxially rotatably connected to a part clamping plate (8) for fixing and connecting an outer ring part (9), a plurality of dividing holes (6) are circumferentially provided on the dividing plate (3), a pin hole (10) is provided on the part clamping plate (8), and a pin shaft is coaxially inserted into the pin hole (10) and one of the dividing holes (6).

2. The outer ring mortise and tenon processing device according to claim 1, characterized in that: A core rod (5) is coaxially connected to the indexing plate (3), and the upper end of the core rod (5) coaxially passes through the cushion block (4) and the part clamping plate (8) and is threadedly connected to a nut (11). The cushion block (4) is located between the indexing plate (3) and the part clamping plate (8).

3. The outer ring mortise and tenon processing device according to claim 2, characterized in that: A first connecting hole for rotatably connecting the core rod (5) is coaxially provided on the dividing plate (3), and a second connecting hole for mounting the core rod (5) and the bearing is coaxially provided on the part clamping plate (8). The aperture of the first connecting hole and the aperture of the upper end of the second connecting hole both match the shaft diameter of the core rod (5), and the aperture of the lower end of the second connecting hole matches the shaft diameter of the bearing.

4. The outer ring mortise and tenon processing device according to claim 2, characterized in that: A washer (7) is coaxially arranged outside the cushion block (4), and the washer (7) is located between the indexing plate (3) and the part clamping plate (8).

5. The outer ring mortise and tenon processing device according to claim 1, characterized in that: The indexing hole (6) is provided on the outer side of the indexing plate (3).

6. The outer ring mortise and tenon processing device according to claim 1, characterized in that: One side of the part clamping plate (8) is provided with a centering device used as an X-direction reference and a leveling device used as a Y-direction reference.

7. The outer ring mortise and tenon processing device according to claim 6, characterized in that: The centering device comprises a centering rod (12) arranged on one side of the part clamping plate (8), and the axis of the centering rod (12) perpendicularly intersects the axis of the indexing plate (3) and the axis of one of the indexing holes (6).

8. The outer ring mortise and tenon processing device according to claim 7, characterized in that: The leveling device comprises a leveling surface (13) arranged on one side of the part clamping plate (8), and the centering rod (12) is perpendicular to the leveling surface (13).

9. The outer ring mortise and tenon processing device according to claim 1, characterized in that: The indexing hole (6) and the pin hole (10) are both through holes.

10. The outer ring mortise and tenon processing device according to claim 1, characterized in that: The crossbeam of the medium-speed wire cutting machine is fixedly connected to a base (1), and the upper end of the base (1) is fixedly connected to the bracket (2).

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