CN219113414U

CN219113414U - Special tool for machining TiAl6V thin-wall high-cylinder ring piece

Info

Publication number: CN219113414U
Application number: CN202222575771.6U
Authority: CN
Inventors: 黄承志; 罗鸿飞; 蒋荣斌; 吴必锋; 王灵; 韩瑜; 任乾光; 罗志强; 谭小林; 张高侠
Original assignee: Guizhou Aviation Technical Development Co ltd
Current assignee: Guizhou Aviation Technical Development Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-06-02
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses a special fixture for machining TiAl6V thin-wall high-cylinder ring pieces, which comprises a base and a pressing plate, wherein the base is in a circular ring shape, and the inner side wall of the base is in a stepped shape with the inner diameter sequentially increased from bottom to top; the base is fixed on the machine tool; the pressing plates are arranged in the horizontal direction and detachably connected to the upper end of the base through fasteners. According to the utility model, a radial clamping mode is changed into an axial clamping mode, and according to the special structure of a certain TiAl6V thin-wall high-cylinder ring, after a large end standard surface is machined, the large end standard surface of the certain TiAl6V thin-wall high-cylinder ring is clamped, a machine tool is utilized to drive a base and a part to be machined to synchronously rotate, a plurality of annular grooves with different shapes on the outer side wall are machined in cooperation with a cutter, machining deformation is conveniently controlled, the influence of cutting force is avoided during machining, deformation is not easy to cause, the clamping is convenient during machining of a small end, and the requirements that the flatness is less than or equal to 0.2mm and the roundness requirement is less than or equal to 0.5mm are met.

Description

Special tool for machining TiAl6V thin-wall high-cylinder ring piece

Technical Field

The utility model relates to a special tool for machining TiAl6V thin-wall high-cylinder ring pieces, and belongs to the technical field of titanium alloy thin-wall ring piece machining equipment for aeroengines.

Background

In the prior art, when a common thin-wall high-cylinder ring piece is machined, one end of the thin-wall high-cylinder ring piece is clamped in the radial direction by a clamp, and then machining is performed by a lathe, as shown in fig. 1 and 2, which are schematic cross-sectional views of a certain TiAl6V thin-wall high-cylinder ring piece, the height reaches 0.667m, the diameter reaches 2.1m, and the following problems exist when the certain TiAl6V thin-wall high-cylinder ring piece is machined by adopting the method:

1) The structural size of the part is bigger (phi 2134.7 plus or minus 0.5), the shape is complex, the residual stress is larger, and the machining deformation is difficult to control.

2) The part is a TiAl6V thin-wall high-cylinder annular part, the thinnest part of the middle wall thickness is only 6+/-0.5 mm, the rigidity is poor, and the part is easily deformed under the influence of cutting force during machining.

3) The small end is provided with a flange edge for clamping, the large end is provided with no flange edge, the structure is an inclined edge, the thinnest part is about 7.38mm, and the small end is not easy to clamp during processing.

4) The part is a large thin-wall annular part, the flatness requirement is less than or equal to 0.2mm, the roundness requirement is less than or equal to 0.5mm, and the flatness of the supporting surface of each procedure cannot be strictly controlled in order to control deformation.

Disclosure of Invention

The utility model aims to solve the technical problems that: the special tool for machining the TiAl6V thin-wall high-cylinder ring piece is provided to solve the problems in the prior art.

The technical scheme adopted by the utility model is as follows: a special fixture for machining TiAl6V thin-wall high-cylinder ring pieces comprises a base and a pressing plate, wherein the base is in a circular ring shape, and the inner side wall of the base is in a stepped shape with the inner diameter sequentially increased from bottom to top; the base is fixed on the machine tool; the pressing plates are arranged in the horizontal direction and detachably connected to the upper end of the base through fasteners.

Preferably, the cross section of the pressing plate in the vertical direction is 7-shaped.

Preferably, the number of the fasteners is set to be 2 or more and is uniformly distributed circumferentially about the axis of the base.

Preferably, the edge of the step on the inner side wall of the base is chamfered.

Preferably, a first semicircular columnar bulge is fixed at the lower end of one end, close to the axis of the base, of the pressing plate, and the arc surface of the first semicircular columnar bulge is vertically downwards arranged; the lower extreme of the one end of clamp plate keeping away from the axis of base is fixed with the protruding of second semicircle ring column, and the bellied arc surface of second semicircle ring column is also vertical down to be arranged.

Preferably, the back chipping treatment is carried out at the connecting place of two adjacent steps on the base.

Preferably, the inner side wall of the base is in a 2-stage step shape, the inner diameter of the step below is larger than the outer diameter of the large end of the part to be processed, and the inner diameter of the step above is larger than the outer diameter of the cylindrical bulge of the circular ring on the part to be processed, which is adjacent to the large end.

Preferably, the height of the pressing plate plus the height of the step above the base is equal to the height of the cylindrical bulge of the circular ring on the part to be processed, which is adjacent to the large end.

The utility model has the beneficial effects that: compared with the prior art, the special fixture is designed, the common thin-wall high-cylinder ring piece is changed into the axial clamping mode in a radial clamping mode, and a plurality of annular grooves with different shapes are required to be machined on the outer side wall of a certain TiAl6V thin-wall high-cylinder ring piece, after the large end standard surface is machined, the large end standard surface of the TiAl6V thin-wall high-cylinder ring piece is clamped, the machine tool is used for driving the base and the part to be machined to synchronously rotate, the machining deformation is convenient to control, the machining deformation is not influenced by cutting force during machining, the deformation is not easy to cause, the clamping is convenient during machining of the small end, and the requirements that the flatness is less than or equal to 0.2mm and the roundness requirement is less than or equal to 0.5mm are met.

Drawings

FIG. 1 is a schematic view of a right end cross-section of a TiAl6V thin-walled high-cylinder ring after axial sectioning;

fig. 2 is a schematic diagram of the overall structure of the present utility model.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and specific examples.

Reference numerals in the drawings of the specification include: base 1, clamp plate 2, screw 3, spanner 4, wait to process part 5, big end standard surface 6.

Example 1:

the utility model provides a special frock of high section of thick bamboo ring spare of machine processing TiAl6V thin wall, as shown in FIG. 2, including base 1 and clamp plate 2, base 1 is fixed on the lathe, and base 1 is the ring form, and the axis of base 1 arranges along vertical direction, and the inside wall of base 1 sets up to follow the 2 level echelonment that down supreme internal diameter increases in proper order, and the border chamfer of ladder on the inside wall of base 1 carries out the back chipping processing in the place that adjacent two-stage step is connected on the base 1, size 2mm.

As shown in fig. 2, the pressing plate 2 is arranged along the horizontal direction, the section of the pressing plate 2 in the vertical direction is 7-shaped, a first semicircular columnar bulge is fixed at the lower end of one end of the pressing plate 2 close to the axis of the base 1, and the arc surface of the first semicircular columnar bulge is arranged vertically downwards; the lower extreme of the one end of keeping away from the axis of base 1 of clamp plate 2 is fixed with the protruding of second semicircle ring column, and the bellied circular arc surface of second semicircle ring column is also vertical down to be arranged, and protruding, the protruding and clamp plate 2 integrated into one piece of second semicircle ring column of first semicircle ring column.

As shown in fig. 2, a T-shaped threaded through hole is formed in the pressing plate 2, a threaded blind hole is formed in a position, corresponding to the pressing plate 2, on the base 1, the pressing plate 2 is in threaded connection with the upper end of the base 1 through an M8 inner hexagonal socket head cap screw 3, and the screw 3 is conveniently installed and detached through an M6 inner hexagonal wrench 4. The number of fasteners is set to 10 and is evenly distributed circumferentially about the axis of the base 1.

As shown in fig. 2, the inner diameter of the step below the base 1 is larger than the outer diameter of the large end of the part to be processed 5, the inner diameter of the step above the base 1 is larger than the outer diameter of the large end reference surface 6 on the part to be processed 5 by 1mm, and the height of the pressing plate 2 plus the height of the step above the base 1 is equal to the height of the large end reference surface 6 on the part to be processed 5.

When the shape and the size of a certain TiAl6V thin-wall high-cylinder ring piece are shown in figure 1, 2mm allowance is reserved on a single side of a part 5 to be processed, a large end surface standard is firstly turned, after the large end surface standard is turned, as shown in figure 2, after the large end surface standard 6 of the certain TiAl6V thin-wall high-cylinder ring piece is clamped, a machine tool is used for driving a base 1 and the part 5 to be processed to synchronously rotate, and a plurality of annular grooves with different shapes on the outer side wall are processed by matching with a cutter.

The foregoing is merely illustrative of the present utility model, and the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present utility model, and therefore, the scope of the present utility model shall be defined by the scope of the appended claims.

Claims

1. A special frock of high section of thick bamboo ring spare of machine processing TiAl6V thin wall, its characterized in that: the device comprises a base (1) and a pressing plate (2), wherein the base (1) is in a ring shape, and the inner side wall of the base (1) is in a step shape with the inner diameter sequentially increased from bottom to top; the base (1) is fixed on a machine tool; the pressing plates (2) are arranged in the horizontal direction, and the pressing plates (2) are detachably connected to the upper end of the base (1) through fasteners.

2. The special fixture for machining the TiAl6V thin-wall high-cylinder ring piece according to claim 1, which is characterized in that: the section of the pressing plate (2) in the vertical direction is 7-shaped.

3. The special fixture for machining the TiAl6V thin-wall high-cylinder ring piece according to claim 1, which is characterized in that: the number of fasteners is set to be more than 2 and is evenly distributed circumferentially about the axis of the base (1).

4. The special fixture for machining the TiAl6V thin-wall high-cylinder ring piece according to claim 1, which is characterized in that: the edge of the step on the inner side wall of the base (1) is chamfered.

5. The special fixture for machining the TiAl6V thin-wall high-cylinder ring piece according to claim 1, which is characterized in that: the lower end of one end, close to the axis of the base (1), of the pressing plate (2) is fixedly provided with a first semicircular columnar bulge, and the arc surface of the first semicircular columnar bulge is vertically downwards arranged; the lower extreme of the one end of clamp plate (2) keeping away from the axis of base (1) is fixed with the protruding of second semicircle ring column, and the bellied arc surface of second semicircle ring column is also vertical down to be arranged.

6. The special fixture for machining the TiAl6V thin-wall high-cylinder ring piece according to claim 1, which is characterized in that: and the back chipping treatment is carried out at the connecting place of two adjacent steps on the base (1).

7. The special fixture for machining the TiAl6V thin-wall high-cylinder ring piece according to claim 1, which is characterized in that: the inner side wall of the base (1) is in a 2-stage step shape, the inner diameter of the step below is larger than the outer diameter of the large end of the part to be processed (5), and the inner diameter of the step above is larger than the outer diameter of the large end datum plane (6) on the part to be processed (5).

8. The special fixture for machining the TiAl6V thin-wall high-cylinder ring piece, which is disclosed in claim 7, is characterized in that: the height of the pressing plate (2) plus the height of the step above the base (1) is equal to the height of the large end datum plane (6) on the part (5) to be processed.