CN115946057B - Aeroengine balance weight machining tool and machining method - Google Patents
Aeroengine balance weight machining tool and machining method Download PDFInfo
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- CN115946057B CN115946057B CN202310245193.6A CN202310245193A CN115946057B CN 115946057 B CN115946057 B CN 115946057B CN 202310245193 A CN202310245193 A CN 202310245193A CN 115946057 B CN115946057 B CN 115946057B
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Abstract
The invention discloses an aeroengine balance weight machining tool and a machining method, wherein the aeroengine balance weight machining tool comprises a flexible fixed pressing plate, a flexible sliding pressing plate, a base, a positioning block, a compression spring and a flexible supporting table. The invention solves the technical problems of difficult clamping and no release space of processing stress in the prior art by the aeroengine balance weight processing tool and the processing method.
Description
Technical Field
The invention relates to the field of aviation part machining, in particular to an aircraft engine balance weight machining tool and a machining method.
Background
Along with the increasing application demands of thin-wall precise parts in the fields of national defense, military industry, aerospace and the like, more stringent requirements are put forward on the machining precision, surface quality and machining efficiency of the parts. Because most aviation products are small and fine, are easy to deform, are influenced by material stress, processing tools, machine tool stability and other performances, the clamping mode of the universal fixture can not meet the precision requirement of the products, and after the products are processed, the materials are subjected to different degrees of stress release, so that the products are out of tolerance in batches; the universal fixture is adopted as a precision vice, the precision vice is used for rigidly clamping a product, and a cutter generates axial resistance to the product in the process of processing the product, so that the stress of the product accumulated to different degrees is restrained by the precision vice, and no stress release space exists; after the thin-wall product is machined by a machine tool, the machining stress of the product is restrained by the precision vice in the machining process, the stress of the product is not completely released after the product is decomposed from the precision vice, and the product precision is deformed to different degrees and is out of tolerance along with the time.
Disclosure of Invention
The invention aims to provide an aeroengine balance weight machining tool and a machining method, which are used for solving the technical problems that clamping is difficult and machining stress is free from a release space in the prior art.
In order to achieve the above purpose, the invention provides a full-automatic image measuring instrument for detecting tooth shapes of synchronous wheels, which comprises a flexible fixed pressing plate, a flexible sliding pressing plate, a base, a positioning block, a compression spring and a flexible supporting table.
Further, the flexible fixed pressing plate, the flexible sliding pressing plate and the flexible supporting table are all flexible structures made of composite materials.
Further, two fixed clamping positioning grooves are formed in the edge of the flexible fixed pressing plate, two sliding clamping positioning grooves are formed in the edge of the flexible sliding pressing plate, the opening directions of the fixed clamping positioning grooves and the sliding clamping positioning grooves are opposite, and the fixed clamping positioning grooves and the sliding clamping positioning grooves are polygonal grooves.
Further, the flexible fixed pressing plate is arranged on the base through a plurality of bolts, and the flexible sliding pressing plate is movably connected with the base through the positioning block.
Further, a step rectangular hole is formed in the flexible sliding pressing plate, one large-diameter end of the step hole is located at the upper end of the flexible sliding pressing plate, and one small-diameter end of the step hole is located at the lower end of the flexible sliding pressing plate.
Further, the locating block is of a step boss structure, the locating block is divided into a limiting end and a guiding end, the bottom surface of the limiting end of the locating block is abutted to the step surface and the side wall of the step hole, and the guiding end of the locating block penetrates through the step hole and is arranged at the upper end of the base.
Further, a product positioning groove and a spring positioning groove are formed in the flexible supporting table, the product positioning groove is a rectangular groove, and the spring positioning groove is a semicircular groove.
The processing method of the balance weight of the aeroengine comprises the following steps:
s1, placing two balance weight products on a product positioning groove of a flexible supporting table, and embedding and fixing the clamping positioning groove on one side of the product and tightly attaching the product;
s2, pushing the flexible sliding pressing plate by using a precision vice, enabling the flexible sliding pressing plate to do linear motion under the constraint action of the positioning block, firstly extruding the compression spring, and continuously sliding to enable the other side of the product to be embedded into the sliding clamping positioning groove and tightly attached to the sliding clamping positioning groove, so that clamping is completed;
s3, after clamping is completed, processing the product is started, and when the first product is processed, the product is vibrated through the axial resistance of the cutter, and meanwhile, the second product is vibrated to release processing stress;
s4, when the second product is processed by using the same processing frequency, vibration with different degrees is generated on the first product, so that the stress is released secondarily;
s5, after the product processing is finished, the flexible fixed pressing plate, the flexible sliding pressing plate and the flexible supporting table are used for carrying out periodic clamping and shape correction on the product after the dimensional balance degree of the individual product is out of tolerance.
Based on the technical scheme, the invention can produce the following beneficial effects:
(1) According to the aeroengine balance weight processing tool and the aeroengine balance weight processing method, aiming at the clamping surface with a narrow and small clamping outline of a balance weight product, the characteristics of difficult deformation, good flexibility and firmness and durability of the flexible pressing plate are utilized, and the clamping force is applied and the contact area of the clamping surface is increased, so that the defects of unsmooth clamping of the product or clamping deformation of the product caused by excessive clamping force are overcome.
(2) According to the processing tool and the processing method for the balance weight of the aeroengine, provided by the invention, aiming at typical characteristics of strong elastic stress and long lasting period of the balance weight, two products are clamped at one time, the same processing frequency is used for guaranteeing the products to realize secondary stress release, and aging deformation can be completely avoided.
(3) According to the aeroengine balance weight machining tool and the aeroengine balance weight machining method, after the balance weight product is completely machined and the critical dimension of the individual product is still out of tolerance, the clamping and the shape correction are periodically carried out by using the clamp of the machining tool, the product precision after the clamping and the shape correction is carried out for 5 days, the process requirement is completely met, and the rebound phenomenon is avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a flexible support table according to an embodiment of the present invention;
FIG. 3 is a schematic product view of a balance weight of an embodiment of the present invention;
in the figure: 1. a flexible fixed platen; 1-1, fixing a clamping positioning groove; 2. a flexible sliding pressure plate; 2-1, sliding clamping positioning grooves; 2-2, step holes; 3. a base; 4. a positioning block; 5. a bolt; 6. a compression spring; 7. a flexible support table; 7-1, a product positioning groove; 7-2, a spring positioning groove.
Detailed Description
In order to better understand the purpose, structure and function of the invention, the invention relates to an aeroengine balance weight processing tool and a processing method thereof, which are described in further detail below with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the aeroengine balance weight processing tool provided by the invention comprises a flexible fixed pressing plate 1, a flexible sliding pressing plate 2, a base 3, a positioning block 4, a compression spring 6 and a flexible supporting table 7, and is characterized in that the flexible fixed pressing plate 1, the flexible supporting table 7 and the flexible sliding pressing plate 2 are sequentially arranged at the upper end of the base 3, the flexible fixed pressing plate 1 and the flexible sliding pressing plate 2 are connected through the compression spring 6, and the positioning block 4 penetrates through the flexible sliding pressing plate 2 to be connected with the base 3.
The flexible fixed pressing plate 1, the flexible sliding pressing plate 2 and the flexible supporting table 7 are all flexible structures made of composite materials, and the maximum deformation of products can be restrained by utilizing the characteristics of difficult deformation, good flexibility and firmness and durability of the composite materials, so that the processing stress can be effectively released in the processing process.
As shown in fig. 2, two fixed clamping positioning grooves 1-1 and two sliding clamping positioning grooves 2-1 are respectively formed in opposite edges of the flexible fixed pressing plate 1 and the flexible sliding pressing plate 2, the fixed clamping positioning grooves 1-1 and the sliding clamping positioning grooves 2-1 are polygonal grooves, and the edges of each fixed clamping positioning groove 1-1 and each sliding clamping positioning groove 2-1 are aligned to ensure that the product can be closely attached to the product and the precision is improved.
The flexible fixed pressing plate 1 is arranged on the base 3 through a plurality of bolts 5, and the flexible sliding pressing plate 2 is movably connected with the base 3 through a positioning block 4.
The flexible sliding pressing plate 2 is provided with a step rectangular hole 2-2, one end with a large diameter of the step hole 2-2 is positioned at the upper end of the flexible sliding pressing plate 2, and one end with a small diameter of the step hole 2-2 is positioned at the lower end of the flexible sliding pressing plate 2.
The positioning block 4 is of a step boss structure, the positioning block 4 is divided into a limiting end and a guiding end, the bottom surface of the limiting end of the positioning block 4 is abutted with the step surface and the side wall of the step hole 2-2, the limiting end of the positioning block 4 only slides on the long side of the step hole 2-2 of the flexible sliding pressing plate 2, and the guiding end of the positioning block 4 penetrates through the step hole 2-2 and is mounted at the upper end of the base 3.
The flexible supporting table 7 is provided with a product positioning groove 7-1 and a spring positioning groove 7-2, the product positioning groove 7-1 is a rectangular groove, and the spring positioning groove 7-2 is a semicircular groove.
The processing method of the balance weight of the aeroengine is characterized by comprising the following steps of:
s1, placing two balance weight products on a product positioning groove 7-1 of a flexible supporting table 7, and embedding one side of the products into the fixed clamping positioning groove 1-1 and tightly attaching the fixed clamping positioning groove to the product positioning groove;
s2, pushing the flexible sliding pressing plate 2 by using a precision vice, enabling the flexible sliding pressing plate 2 to do linear motion under the constraint action of the positioning block 4, firstly extruding the compression spring 6, continuously sliding to enable the other side of the product to be embedded into the sliding clamping positioning groove 2-1 and tightly attached to the sliding clamping positioning groove, and finishing clamping;
s3, after clamping is completed, processing the product is started, and when the first product is processed, the product is vibrated through the axial resistance of the cutter, and meanwhile, the second product is vibrated to release processing stress;
s4, when the second product is processed by using the same processing frequency, vibration with different degrees is generated on the first product, so that the stress is released secondarily;
and S5, after the product processing is finished, the flexible fixed pressing plate 1, the flexible sliding pressing plate 2 and the flexible supporting table 7 are used for carrying out periodical clamping and shape correction on the product aiming at the out-of-tolerance dimensional balance degree of the individual product.
The effect diagram of the produced balance weight is shown in figure 3 through the product processed by the aircraft engine balance weight processing tool.
The process requirement balance degree of the produced balance weight is shown in the following table:
according to statistics, the products processed by the aeroengine balance weight processing tool can meet the process requirement that the parallelism is less than or equal to 0.05 mm.
It will be understood that the invention has been described with respect to certain embodiments and that various changes and equivalents may be made to those features and embodiments without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. The aeroengine balance weight machining method comprises a flexible fixed pressing plate (1), a flexible sliding pressing plate (2), a base (3), a positioning block (4), a compression spring (6) and a flexible supporting table (7), and is characterized in that the flexible fixed pressing plate (1), the flexible supporting table (7) and the flexible sliding pressing plate (2) are sequentially arranged at the upper end of the base (3), the flexible fixed pressing plate (1) and the flexible sliding pressing plate (2) are connected through the compression spring (6), and the positioning block (4) penetrates through the flexible sliding pressing plate (2) to be connected with the base (3); a product positioning groove (7-1) and a spring positioning groove (7-2) are formed in the flexible supporting table (7), the product positioning groove (7-1) is a rectangular groove, and the spring positioning groove (7-2) is a semicircular groove; two fixed clamping positioning grooves (1-1) are formed in the edge of the flexible fixed pressing plate (1), two sliding clamping positioning grooves (2-1) are formed in the edge of the flexible sliding pressing plate (2), the openings of the fixed clamping positioning grooves (1-1) and the sliding clamping positioning grooves (2-1) are oppositely arranged, and the fixed clamping positioning grooves (1-1) and the sliding clamping positioning grooves (2-1) are polygonal grooves;
it comprises the following steps:
s1, placing two balance weight products on a product positioning groove (7-1) of a flexible supporting table (7), and embedding and fixing the clamping positioning groove (1-1) on one side of the products and tightly attaching the products;
s2, pushing the flexible sliding pressing plate (2) by using a precision vice, enabling the flexible sliding pressing plate (2) to do linear motion under the constraint action of the positioning block (4), firstly extruding the compression spring (6), continuously sliding to enable the other side of the product to be embedded into and tightly attached to the sliding clamping positioning groove (2-1), and completing clamping;
s3, after clamping is completed, processing the product is started, and when the first product is processed, the product is vibrated through the axial resistance of the cutter, and meanwhile, the second product is vibrated to release processing stress;
s4, when the second product is processed by using the same processing frequency, vibration with different degrees is generated on the first product, so that the stress is released secondarily;
s5, after product processing is completed, the flexible fixed pressing plate (1), the flexible sliding pressing plate (2) and the flexible supporting table (7) are used for carrying out periodic clamping and shape correction on the products aiming at the out-of-tolerance dimensional balance degree of individual products.
2. The method for machining the balance weight of the aeroengine according to claim 1, wherein the flexible fixed pressing plate (1), the flexible sliding pressing plate (2) and the flexible supporting table (7) are all flexible structures made of composite materials.
3. The aeroengine balance weight processing method according to claim 1, wherein the flexible fixed pressing plate (1) is installed on the base (3) through a plurality of bolts (5), and the flexible sliding pressing plate (2) is movably connected with the base (3) through a positioning block (4).
4. The aeroengine balance weight processing method according to claim 1, wherein the flexible sliding pressing plate (2) is provided with a step hole (2-2), one large-diameter end of the step hole (2-2) is located at the upper end of the flexible sliding pressing plate (2), and one small-diameter end of the step hole (2-2) is located at the lower end of the flexible sliding pressing plate (2).
5. The aeroengine balance weight processing method according to claim 1, wherein the positioning block (4) is of a step boss structure, the positioning block (4) is divided into a limiting end and a guiding end, the bottom surface of the limiting end of the positioning block (4) is abutted with the step surface and the side wall of the step hole (2-2), and the guiding end of the positioning block (4) penetrates through the step hole (2-2) and is arranged at the upper end of the base (3).
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