阅读说明：本技术 一种密封支座组件车加工变形控制装置及控制方法 (Device and method for controlling machining deformation of sealing support assembly ) 是由 周长城 王玉泉 罗先 赵欢祥 陈昌云 于 2021-10-22 设计创作，主要内容包括：一种密封支座组件车加工变形控制装置,包括底板、定位环、盖板、压板、以及多个支承组件；定位环安装在底板上用于对密封支座组件进行支撑定位；在盖板对密封支座组件进行压紧时,盖板下端的压紧平面压在密封支座组件上导流板安装边的上表面处；支承组件设置在底板上用于对密封支座组件上导流板悬臂进行支承；在底板上设置有第一压紧机构和第二压紧结构,第一压紧结构用于压紧所述盖板,所述压板通过第二压紧结构将密封支座组压紧的底部在定位环上。利用支承组件对密封支座组件上导流板悬臂进行支撑的同时,还利用盖板对密封支座组件上导流板安装边进行向下压紧,避免加工时导流板安装边受力向上弯曲变形,提高零件加工质量,降低零件报废风险。(A machining deformation control device for a sealing support assembly comprises a bottom plate, a positioning ring, a cover plate, a pressing plate and a plurality of supporting assemblies; the positioning ring is arranged on the bottom plate and used for supporting and positioning the sealing support assembly; when the cover plate compresses the sealing support assembly, the compression plane at the lower end of the cover plate is pressed on the upper surface of the guide plate mounting edge on the sealing support assembly; the supporting assembly is arranged on the bottom plate and is used for supporting the guide plate cantilever on the sealing support assembly; the bottom plate is provided with a first pressing mechanism and a second pressing structure, the first pressing structure is used for pressing the cover plate, and the pressing plate presses the bottom of the sealing support group on the positioning ring through the second pressing structure. When the supporting assembly is used for supporting the guide plate cantilever on the sealing support assembly, the cover plate is used for compressing the guide plate mounting edge on the sealing support assembly downwards, the upward bending deformation of the stress of the guide plate mounting edge during machining is avoided, the part machining quality is improved, and the part scrapping risk is reduced.)

1. A machining deformation control device for a sealing support assembly is characterized by comprising a bottom plate (1), a positioning ring (2), a cover plate (7), a pressing plate (8) and a plurality of supporting assemblies; the positioning ring (2) is arranged on the bottom plate (1) and is used for supporting and positioning the sealing support assembly; a pressing plane (71) is arranged on the cover plate (7), and when the cover plate (7) presses the sealing support assembly, the pressing plane (71) presses the upper surface of the guide plate mounting edge (100) on the sealing support assembly; the supporting assembly is arranged on the bottom plate (1) and is used for supporting a guide plate cantilever (101) on the sealing support assembly; the bottom plate (1) is provided with a first pressing mechanism and a second pressing structure, the first pressing structure is used for pressing the cover plate (7), and the pressing plate (8) presses the bottom of the sealing support group onto the positioning ring (2) through the second pressing structure.

2. The seal carrier assembly turning deformation control device of claim 1, wherein: a spigot (21) is arranged on the positioning ring (2), and the lower end of the sealing support component is clamped on the spigot (21).

3. The seal carrier assembly turning deformation control device of claim 1, wherein: the supporting component comprises a supporting block (3) and a supporting rod (4) arranged on the supporting block (3); the supporting block (3) is fixedly arranged on the bottom plate (1), one end of the supporting rod (4) is provided with a supporting head (41), the other end of the supporting rod is provided with a supporting screw rod (42), and the end part of the supporting head (41) is hemispherical; the supporting screw rod (42) is arranged on a screw hole of the supporting block (3), and the supporting head (41) is supported on a guide plate cantilever (101) on the sealing support assembly; a bearing locking nut (43) is arranged on the bearing screw rod (42) and used for locking the bearing rod (4).

4. A seal carrier assembly turning deformation control device as claimed in claim 3, wherein: the axis of the supporting rod (4) is vertical to the outer surface of the guide plate cantilever (101).

5. A seal carrier assembly turning deformation control device as claimed in claim 3, wherein: the supporting block (3) comprises a supporting block mounting part (31) and a supporting block inclined part (32), and the supporting block mounting part (31) is fixedly mounted on the bottom plate (1) through a screw; the branch block inclined part (32) is parallel to the guide plate cantilever (101).

6. The seal carrier assembly turning deformation control device of claim 1, wherein: the first pressing mechanism comprises a pressing screw rod (5) and a first pressing nut (6), the lower end of the pressing screw rod (5) is arranged on the bottom plate (1), the upper end of the pressing screw rod penetrates out of the cover plate (7), and the first pressing nut (6) is arranged at the upper end of the pressing screw rod (5).

7. The seal carrier assembly turning deformation control device of claim 1, wherein: the number of the pressing plates (8) is four, and the second pressing mechanism comprises a stud (81), a spring (82) and a second pressing nut (83); the lower end of the stud (81) is arranged on the bottom plate (1), the pressing plate (8) is arranged on the stud (81) in a penetrating mode, and the second compression nut (83) is arranged on the upper portion of the stud (81); the spring (82) penetrates through the stud (81), the upper end of the spring (82) abuts against the lower surface of the pressing plate (8), and the lower end of the spring (82) abuts against the upper surface of the bottom plate (1).

8. The seal carrier assembly turning deformation control device of claim 7, wherein: the number of the first pressing mechanisms is four.

9. The seal carrier assembly turning deformation control device of claim 1, wherein: the number of the supporting components is eight, and the supporting components are uniformly distributed on the bottom plate (1) in an annular shape.

10. A method for controlling the machining deformation of a seal carrier assembly, which is characterized by adopting the device for controlling the machining deformation of the seal carrier assembly as claimed in any one of claims 1 to 9, and comprises the following steps:

step S1: placing the sealing support assembly on a positioning ring (2) of the turning deformation control device, and adjusting a second pressing mechanism to enable a pressing plate (8) to tightly press and attach the lower end face of the sealing support assembly to the positioning ring (2);

step S2: a guide plate cantilever (101) on the sealing support assembly is supported by the supporting assembly, and the supporting assembly is adjusted to enable the guide plate mounting edge (100) to be horizontal;

step S3: and a cover plate (7) is installed, a pressing plane (71) of the cover plate (7) is pressed on a guide plate installation edge (100) of the sealing support assembly, a first pressing nut (6) on a first pressing mechanism is screwed, and the turning deformation control of the sealing support assembly is completed.

Technical Field

The invention relates to the technical field of aeroengine part turning, in particular to a device and a method for controlling turning deformation of a sealing support assembly.

Background

The sealing support assembly is an important part of a central transmission part of an aeroengine, belongs to a typical thin-wall welding sheet metal part, and influences air flow and sealing performance by manufacturing precision, so that the overall performance of the engine is influenced. Therefore, the processing precision is high, as shown in fig. 1 and fig. 2, the parallelism between the upper plane and the lower plane of the guide plate mounting edge in the sealing support component and the reference B is required to be 0.04mm, the runout of the inner circle of the sealing support component to the reference A is 0.01mm, and the wall thickness tolerance of the guide plate mounting edge is within the range of 0.1 mm. The guide plate cantilever is very long, accounts for two thirds of the whole radial dimension of part, and the wall thickness is only 1.2mm moreover, is typical thin wall welding panel beating structure, is that the deformation is big, the part structure that the deformation is difficult to control on the sealed support subassembly. In a free state, the part is slightly pressed downwards by hand, and the deformation amount can reach 1mm, so that the sealing support assembly is deformed under the influence of cutting force in the turning process, and the machining precision of the sealing support assembly is difficult to ensure. The traditional method for controlling deformation is wax filling, but wax filling can only increase the rigidity of parts, and when the wall thickness of the mounting edge of the guide plate is processed, a cutter presses the parts upwards, so that the parts still deform seriously.

Disclosure of Invention

The invention mainly aims to provide a device and a method for controlling the machining deformation of a sealing support assembly, and aims to solve the technical problems.

In order to achieve the purpose, the invention provides a machining deformation control device for a sealing support assembly, which comprises a bottom plate, a positioning ring, a cover plate, a pressure plate and a plurality of supporting assemblies, wherein the bottom plate is provided with a plurality of positioning holes; the positioning ring is arranged on the bottom plate and used for supporting and positioning the sealing support assembly; a pressing plane is arranged on the cover plate, and when the cover plate presses the sealing support assembly tightly, the pressing plane is pressed on the upper surface of the guide plate mounting edge on the sealing support assembly; the supporting assembly is arranged on the bottom plate and is used for supporting the guide plate cantilever on the sealing support assembly; the bottom plate is provided with a first pressing mechanism and a second pressing structure, the first pressing structure is used for pressing the cover plate, and the pressing plate presses the bottom of the sealing support group on the positioning ring through the second pressing structure.

Preferably, a spigot is arranged on the positioning ring, and the lower end of the sealing support assembly is clamped on the spigot.

Preferably, the supporting component comprises a supporting block and a supporting rod arranged on the supporting block; the supporting block is fixedly arranged on the bottom plate, one end of the supporting rod is provided with a supporting head, the other end of the supporting rod is provided with a supporting screw rod, and the end part of the supporting head is hemispherical; the supporting screw is arranged on a screw hole of the supporting block, and the supporting head is supported on a guide plate cantilever on the sealing support assembly; and a support locking nut is arranged on the support screw rod and used for locking the support rod.

Preferably, the axis of the support bar is perpendicular to the outer surface of the baffle cantilever.

Preferably, the supporting block comprises a supporting block mounting part and a supporting block inclined part, and the supporting block mounting part is fixedly mounted on the bottom plate through a screw; the branch block inclined part is parallel to the guide plate cantilever.

Preferably, the first compression mechanism comprises a compression screw and a first compression nut, the lower end of the compression screw is arranged on the bottom plate, the upper end of the compression screw penetrates out of the cover plate, and the first compression nut is arranged at the upper end of the compression screw.

Preferably, the number of the pressing plates is four, and the second pressing mechanism comprises a stud, a spring and a second pressing nut; the lower end of the stud is arranged on the bottom plate, the pressing plate penetrates through the stud, and the second compression nut is arranged at the upper part of the stud; the spring is arranged on the stud in a penetrating mode, the upper end of the spring is abutted against the lower surface of the pressing plate, and the lower end of the spring is abutted against the upper surface of the bottom plate.

Preferably, the number of the first pressing mechanisms is four.

Preferably, the number of the supporting assemblies is eight, and the supporting assemblies are uniformly distributed on the bottom plate in an annular shape.

The invention also provides a method for controlling the machining deformation of the sealing support assembly, which is characterized in that the device for controlling the machining deformation of the sealing support assembly comprises the following steps:

step S: placing the sealing support assembly on a positioning ring of the turning deformation control device, and adjusting a second pressing mechanism to enable a pressing plate to tightly press and attach the lower end face of the sealing support assembly to the positioning ring;

step S: the guide plate cantilever on the sealing support assembly is supported by the supporting assembly, and the supporting assembly is adjusted to enable the guide plate mounting edge to be horizontal;

step S: and a cover plate is installed, a compression plane of the cover plate is pressed on a guide plate installation edge of the sealing support assembly, a first compression nut on the first compression mechanism is screwed down, and the turning deformation control of the sealing support assembly is completed.

The invention has the following beneficial effects:

(1) in the invention, the guide plate cantilever on the sealing support assembly is supported by the supporting assembly, and the guide plate mounting edge on the sealing support assembly is pressed downwards by the cover plate, so that the deformation of the guide plate cantilever in the turning process can be effectively controlled, the processing deformation is reduced, the guide plate mounting edge is prevented from being stressed to be bent upwards to deform during the processing, the part processing quality is improved, and the part scrapping risk is reduced.

(2) According to the invention, through the structure of combining the pressing plate, the cover plate, the first pressing mechanism and the second pressing mechanism, the sealing support assembly is pressed doubly, and meanwhile, the axial positioning and the radial positioning are formed on the sealing support assembly through the positioning ring, so that the pressing reliability and the mounting and positioning precision of a workpiece are improved.

(3) In the invention, the axis of the support rod on the support component is vertical to the outer surface of the guide plate cantilever, namely the support force application direction is vertical to the guide plate cantilever, so that the support is more stable and powerful, and the processing deformation can be effectively controlled. The problems that the traditional floating support can only apply supporting force to a part in the axial direction, a cantilever of a guide plate forms a certain angle with a horizontal plane, so that the floating support is unstable, and the part is deformed due to strong cutting force during machining are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the dimensional accuracy requirements for machining a seal carrier assembly;

FIG. 2 is an enlarged view of the structure at C in FIG. 1;

FIG. 3 is a schematic structural view of a turning deformation control device for a seal support assembly according to the present invention;

the reference numbers illustrate: 1-a bottom plate; 2-a positioning ring; 21-spigot; 3-supporting blocks; 31-a supporting block mounting part; 32-a spur ramp; 4-a support bar; 41-a support head; 42-a support screw; 43-support lock nut; 5-a compression screw; 6-a first compression nut; 7-cover plate; 71-pressing plane; 8-pressing a plate; 81-stud; 82-a spring; 83-a second compression nut; 100-a deflector mounting edge; 101-baffle cantilever.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 and 2, the machining dimensional accuracy requirement schematic diagram of the sealing support assembly is shown, the parallelism requirement between the upper and lower planes of the guide plate mounting edge 100 in the sealing support assembly and the reference B is 0.04mm, the runout of the inner circle of the sealing support assembly to the reference a is 0.01mm, and the wall thickness tolerance of the guide plate mounting edge 100 is within the range of 0.1 mm; the guide plate cantilever (101) on the seal support assembly is inclined.

As shown in fig. 3, an embodiment of the present invention for controlling the machining deformation of a sealing seat assembly is provided, the machining deformation controlling device includes a base plate 1, a positioning ring 2, a cover plate 7, a pressure plate 8, and a plurality of supporting assemblies; the positioning ring 2 is arranged on the bottom plate 1 and used for supporting and positioning the sealing support assembly; a pressing plane 71 is arranged on the cover plate 7, and when the cover plate 7 presses the sealing support assembly tightly, the pressing plane 71 is pressed on the upper surface of the guide plate mounting edge 100 on the sealing support assembly; the supporting assembly is arranged on the bottom plate 1 and is used for supporting a guide plate cantilever 101 on the sealing support assembly; the bottom plate 1 is provided with a first pressing mechanism and a second pressing mechanism, the first pressing mechanism is used for pressing the cover plate 7, and the pressing plate 8 presses the bottom of the sealing support group onto the positioning ring 2 through the second pressing mechanism.

In the present embodiment, a stop 21 is provided on the positioning ring 2, and the lower end of the seal holder assembly is clamped on the stop 21.

In the present embodiment, the support assembly includes a fulcrum 3 and a support rod 4 provided on the fulcrum 3; the supporting block 3 is fixedly installed on the bottom plate 1, one end of the supporting rod 4 is a supporting head 41, the other end of the supporting rod is a supporting screw rod 42, and the end of the supporting head 41 is hemispherical; the supporting screw 42 is arranged on a screw hole of the supporting block 3, and the supporting head 41 is supported on a guide plate cantilever 101 on the sealing support assembly; a support locking nut 43 is provided on the support screw 42 for locking the support rod 4.

In this embodiment, the axis of the support rods 4 is perpendicular to the outer surface of the baffle cantilever 101.

In this embodiment, the supporting block 3 includes a supporting block mounting portion 31 and a supporting block inclined portion 32, and the supporting block mounting portion 31 is fixedly mounted on the bottom plate 1 by screws; the leg tilt 32 is parallel to the baffle cantilever 101.

In this embodiment, the first pressing mechanism includes a pressing screw 5 and a first pressing nut 6, the lower end of the pressing screw 5 is disposed on the bottom plate 1, the upper end of the pressing screw penetrates through the cover plate 7, and the first pressing nut 6 is disposed at the upper end of the pressing screw 5.

In the present embodiment, the number of the pressing plates 8 is four, and the second pressing mechanism includes a stud 81, a spring 82, and a second pressing nut 83; the lower end of the stud 81 is arranged on the bottom plate 1, the pressure plate 8 is arranged on the stud 81 in a penetrating manner, and the second compression nut 83 is arranged on the upper part of the stud 81; the spring 82 penetrates through the stud 81, the upper end of the spring 82 abuts against the lower surface of the pressure plate 8, and the lower end of the spring 82 abuts against the upper surface of the bottom plate 1. The lower part of the sealing support component is uniformly compressed by four pressing plates 8, so that the lower end face of the sealing support component is completely attached to the positioning ring 2, the uniformity of compression stress is improved, and deformation caused by compression is reduced.

In this embodiment, the number of the first pressing mechanisms is four. If only adopt a first hold-down mechanism, apron 7 takes place the slope easily when compressing tightly apron 7, leads to the uneven emergence of guide plate installation limit 100 atress to warp easily, sets up four second hold-down mechanisms, can effectively avoid apron 7 to take place the slope easily, provides and compresses tightly the atress homogeneity.

In this embodiment, the number of the supporting assemblies is eight, and the supporting assemblies are uniformly distributed on the bottom plate 1 in a ring shape.

A method for controlling the machining deformation of a sealing support assembly adopts the device for controlling the machining deformation of the sealing support assembly, and comprises the following steps:

step S1: placing the sealing support assembly on a positioning ring 2 of the turning deformation control device, and adjusting a second pressing mechanism to enable a pressing plate 8 to tightly press and attach the lower end face of the sealing support assembly to the positioning ring 2;

step S2: a guide plate cantilever 101 on the sealing support assembly is supported by the supporting assembly, and the supporting assembly is adjusted to enable the guide plate mounting edge 100 to be horizontal;

step S3: and (3) installing a cover plate 7, pressing a pressing plane 71 of the cover plate 7 on a guide plate installing edge 100 of the sealing support assembly, and screwing a first pressing nut 6 on a first pressing mechanism to finish the turning deformation control of the sealing support assembly.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.