Titanium alloy part X-ray residual stress detection device

Abstract

The utility model discloses an X-ray residual stress detection device for titanium alloy parts, which is characterized in that the top of a stand column is provided with an L-shaped cantilever, the free end of the L-shaped cantilever is provided with a connecting seat through a rotating motor, and the rotating motor is used for driving the connecting seat to rotate along the Y axis; a mounting seat is mounted on the connecting seat through an X-axis linear driving mechanism, and the X-axis linear driving mechanism is used for driving the mounting seat to linearly move in the X-axis direction of the connecting seat; a lifting testboard is arranged below the mounting seat, and the Y-axis linear driving mechanism is used for driving the lifting testboard to linearly move along the Y-axis direction; an X-ray probe and a detector are installed on the two sides of the installation base through rotating mechanisms respectively, and the X-ray probe and the detector are driven by the rotating mechanisms to rotate along the X axis. According to the utility model, a part to be tested can be tested transversely and longitudinally, the placement stability of the part and the automation of operation are ensured, and the practicability is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of X-ray detection of titanium alloy parts, and in particular relates to an X-ray residual stress detection device for titanium alloy parts. Background Art

[0002] In the manufacturing of contemporary aerospace equipment, large structures made of high-temperature alloys, aluminum alloys, titanium alloys, magnesium alloys and traditional steel materials play a major role. For structural parts formed by casting, forging, welding or machining, especially large welded parts, it is worth noting not only whether there are macroscopic defects, but also the residual stress state is increasingly valued because it is related to the safety and life of the structure. Excessive residual stress or excessively uneven residual stress may directly lead to deformation or cracking of components, causing early failure and even safety accidents. Although the residual stress of such parts may be gradually relaxed during operation, it is inevitable at the cost of permanent deformation of the structure in this process. In many cases, this deformation will destroy the original dynamic balance state, cause additional vibration, and reduce fatigue life; or damage the original precision clearance, coaxial accuracy and other indicators, causing the equipment to lose its due quality and function. With the intensification of aviation product production tasks, especially the trial production and batch production of large aircraft and fourth-generation aircraft, the application of titanium alloy steel in aviation products will be greatly strengthened in the future, among which titanium alloy machining, heat treatment, shot peening and stress detection projects will also increase.

[0003] X-ray residual stress testing is a widely used non-destructive stress detection method. During X-ray residual stress detection, the entire probe has a 20° swing amplitude. After the horizontal test, the parts need to be tested vertically. Secondly, the irradiation area formed by the spot shape has a crucial influence on the diffraction peak intensity. The circular focused spot cannot increase the irradiation area in the corresponding horizontal and vertical detection directions, so it is impossible to achieve enhanced diffraction peaks, net peak intensity and smooth peak shape. The use of rectangular focused spots for stress detection of titanium alloy parts solves this problem. Utility Model Content

[0004] The utility model aims to provide an X-ray residual stress detection device for titanium alloy parts, aiming to realize transverse and longitudinal stress detection of parts.

[0005] The utility model is mainly realized through the following technical solutions:

[0006] An X-ray residual stress detection device for titanium alloy parts, comprising a housing and a lifting test bench, a column, an X-axis linear drive mechanism, a Y-axis linear drive mechanism, an L-shaped cantilever, a connecting seat and a mounting seat arranged inside the housing; the top of the column is provided with an L-shaped cantilever, the free end of the L-shaped cantilever is provided with a connecting seat through a rotating motor, and the rotating motor is used to drive the connecting seat to rotate along the Y-axis; the connecting seat is provided with a mounting seat through an X-axis linear drive mechanism, and the X-axis linear drive mechanism is used to drive the mounting seat to move linearly along the X-axis direction of the connecting seat; a lifting test bench is arranged below the mounting seat, and the Y-axis linear drive mechanism is used to drive the lifting test bench to move linearly along the Y-axis direction; X-ray probes and detectors are respectively installed on both sides of the mounting seat through rotating mechanisms, and the X-ray probes and detectors are driven by the rotating mechanisms to rotate along the X-axis.

[0007] In order to better implement the present invention, further, a rotating shaft is rotatably arranged at the free end of the L-shaped cantilever, one end of the rotating shaft is fixedly connected to the connecting seat, and the other end is connected to the rotating motor, and the rotating motor is installed on the L-shaped cantilever.

[0008] In order to better implement the present invention, further, supports are respectively installed at both ends of the mounting seat, a swing arm is hinged inside the support, and a driving cylinder is installed outside the support, and the driving end of the driving cylinder is connected to the swing arm for driving the swing arm to rotate and swing along the X-axis of the hinged end, and the X-ray probe and the detector are respectively connected to the free ends of the left and right swing arms.

[0009] In order to better implement the present invention, further, the X-axis linear drive mechanism includes a guide rod, a threaded rod and a linear drive motor. Guide rods are respectively arranged at both ends of the bottom side of the connecting seat along the X-axis direction, and a threaded rod is rotatably arranged in the middle along the X-axis direction. One end of the threaded rod is connected to the linear drive motor, and the middle of the threaded rod is connected to the top connection end of the mounting seat through a nut; chutes are respectively arranged on both sides of the top of the mounting seat corresponding to the guide rods, and the guide rods are slidably connected to the chutes.

[0010] In order to better implement the present invention, further, the Y-axis linear drive mechanism includes a drive motor, a rack and a drive gear. Two parallel racks are arranged inside the housing along the Y-axis direction, and a lifting test bench is slidably arranged between adjacent racks. Drive motors are respectively arranged at both ends of the lifting test bench, and drive gears are installed at the drive ends of the drive motors corresponding to the racks, and the drive gears are engaged with the racks.

[0011] In order to better implement the present invention, further, the cross-section of the ray beam emitted by the X-ray probe is rectangular, and is used to form a rectangular focused spot on the part to be measured.

[0012] In order to better implement the present utility model, further, the size of the rectangular focused light spot is 5.4mm * 2mm.

[0013] The beneficial effects of the present utility model are as follows:

[0014] Through the X-axis linear drive mechanism, Y-axis linear drive mechanism and lifting test bench, the present utility model realizes the adjustment of the test positions of the part to be tested in the X-axis, Y-axis and Z-axis directions. The present utility model drives the X-ray probe and detector to perform horizontal and vertical tests on the part to be tested through the rotating motor at the free end of the L-shaped cantilever, enabling the part test to proceed smoothly, ensuring the placement stability of the part, and the automation of the operation. Secondly, through the setting of the rectangular focused light spot, the present utility model increases the ray irradiation area, achieving a substantial 50% improvement in the detection efficiency on the premise of obtaining high diffraction peaks, high linear fitting degrees and data accuracies, and has good practicability. Description of the Drawings

[0015] Figure 1 It is a top view of the rectangular focused light spot on the part to be tested;

[0016] Figure 2 It is a cross-sectional view of the rectangular focused light spot inside the part to be tested;

[0017] Figure 3 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 4 It is a schematic diagram of the connection structure between the connecting seat and the rotating shaft;

[0019] Figure 5 It is a schematic diagram of the connection structure between the L-shaped cantilever and the rotating shaft;

[0020] Figure 6 It is a schematic diagram of the connection structure between the mounting seat, the driving cylinder and the swing arm;

[0021] Figure 7 It is a schematic diagram of the connection structure between the driving cylinder and the swing arm;

[0022] Figure 8 It is a schematic diagram of the connection structure between the connecting seat and the mounting seat.

[0023] Wherein: 1 - housing, 2 - lifting test bench, 3 - column, 4 - L-shaped cantilever, 5 - connecting seat, 6 - mounting seat, 7 - X-axis linear drive mechanism, 8 - Y-axis linear drive mechanism, 9 - X-ray probe, 10 - detector, 11 - rotating shaft, 12 - support, 13 - swing arm, 14 - driving cylinder, 15 - guide rod. Detailed Embodiments

[0024] Embodiment 1:

[0025] An X-ray residual stress detection device for titanium alloy parts, as Figures 3 - 5 shown, a Y-axis linear drive mechanism 8 is provided on one side inside the housing 1, and the Y-axis linear drive mechanism 8 is used to drive the lifting test bench 2 to move linearly along the Y-axis direction. A column 3 is provided on the other side inside the housing 1, an L-shaped cantilever 4 is installed at the top of the column 3, a connecting seat 5 is installed at the free end of the L-shaped cantilever 4 through a rotating shaft 11, an X-axis linear drive mechanism 7 is installed at the bottom of the connecting seat 5, and a mounting seat 6 is installed on the X-axis linear drive mechanism 7 for driving the mounting seat 6 to move linearly along the X-axis direction. One end of the rotating shaft 11 passes outwards through the free end of the L-shaped cantilever 4 and is fixedly connected to the connecting seat 5, and the other end of the rotating shaft 11 is connected to a rotating motor, and one end of the rotating shaft 11 is rotatably connected to the L-shaped cantilever 4. The rotating motor is installed inside the L-shaped cantilever 4 for driving the rotating shaft 11 to rotate around the Y-axis, and then driving the connecting seat 5 to rotate around the Y-axis.

[0026] As Figure 6 and Figure 7 shown, supports 12 are respectively installed at both ends of the mounting seat 6, a swing arm 13 is hinged inside the supports 12, and a driving cylinder 14 is installed outside the supports 12. The driving end of the driving cylinder 14 is hinged to the swing arm 13 for driving the swing arm 13 to rotate and swing along the X-axis of the hinged end. The X-ray probe 9 and the detector 10 are respectively installed at the free ends of the left and right swing arms 13.

[0027] Preferably, as Figure 8 shown, the X-axis linear drive mechanism 7 includes a guide rod 15, a threaded rod and a linear drive motor. Guide rods 15 are respectively arranged along the X-axis direction at both ends of the bottom side of the connecting seat 5, and a threaded rod is rotatably arranged along the X-axis direction in the middle. One end of the threaded rod is connected to the linear drive motor, and the middle of the threaded rod is connected to the top of the mounting seat 6 through a nut; chutes are respectively arranged on both sides of the top of the mounting seat 6 corresponding to the guide rods 15, and the guide rods 15 are slidably connected to the chutes.

[0028] Preferably, the Y-axis linear drive mechanism 8 includes a drive motor, a rack and a drive gear. Two parallel racks are arranged along the Y-axis direction inside the housing 1, and the lifting test bench 2 is slidably arranged between adjacent racks. Drive motors are respectively arranged at both ends of the lifting test bench 2, and drive gears are installed at the drive ends of the drive motors corresponding to the racks, and the drive gears are meshed with the racks.

[0029] During the use of the utility model, first place the part to be tested on the lifting test bench 2, then drive the X-axis linear drive mechanism 7 and the Y-axis linear drive mechanism 8 to adjust the two-dimensional position, and then adjust the swing angles of the X-ray probe 9 and the detector 10 by adjusting the rotating mechanisms on both sides of the mounting seat 6 to realize the test of the top surface of the part to be tested. After the test is completed, adjust the mounting seat 6 to rotate along the Y-axis by the rotating motor at the free end of the L-shaped cantilever 4, and adjust the positions of the X-ray probe 9 and the detector 10 as a whole relative to the part to be tested to realize the scanning detection of the longitudinal side surface of the part. Then, through the lifting of the lifting test bench 2, the longitudinal test of the part to be tested is realized.

[0030] The utility model realizes the adjustment of the test positions of the part to be tested in the X-axis, Y-axis and Z-axis directions through the X-axis linear drive mechanism 7, the Y-axis linear drive mechanism 8 and the lifting test bench 2. The utility model realizes the driving of the X-ray probe 9 and the detector 10 to perform transverse and longitudinal tests on the part to be tested through the rotating motor at the free end of the L-shaped cantilever 4, which enables the part test to proceed smoothly, ensures the placement stability of the part, and the automation of the operation, and has good practicability.

[0031] Embodiment 2:

[0032] An X-ray residual stress detection device for titanium alloy parts, as Figure 3 and Figure 8 shown, includes a housing 1 and a lifting test bench 2, a column 3, an X-axis linear drive mechanism 7, a Y-axis linear drive mechanism 8, an L-shaped cantilever 4, a connecting seat 5 and a mounting seat 6 arranged inside the housing 1; the top of the column 3 is installed with an L-shaped cantilever 4, the free end of the L-shaped cantilever 4 is installed with a connecting seat 5 through a rotating motor, and the rotating motor is used to drive the connecting seat 5 to rotate along the Y-axis; the connecting seat 5 is installed with a mounting seat 6 through an X-axis linear drive mechanism 7, and the X-axis linear drive mechanism 7 is used to drive the mounting seat 6 to move linearly along the X-axis direction of the connecting seat 5; a lifting test bench 2 is arranged below the mounting seat 6, and the Y-axis linear drive mechanism 8 is used to drive the lifting test bench 2 to move linearly along the Y-axis direction; the two sides of the mounting seat 6 are respectively installed with an X-ray probe 9 and a detector 10 through rotating mechanisms, and the X-ray probe 9 and the detector 10 are driven to rotate along the X-axis through the rotating mechanisms.

[0033] The cross-section of the ray beam emitted by the X-ray probe 9 is rectangular, and is used to form a rectangular focused light spot on the part to be tested. Specifically, as Figure 1 and Figure 2As shown in the figure, the size of the rectangular focused spot is 5.4mm*2mm. The 5.4mm*2mm rectangular focused spot can increase the irradiation area in the corresponding horizontal and vertical detection directions, so that the detection efficiency can be greatly improved by 50% under the premise of obtaining high diffraction peaks, high linear fit and data accuracy. It greatly shortens the time for X-ray residual stress detection of titanium alloy parts and avoids the situation where multiple batches of retention detection affect the progress of scientific research and production.

[0034] Preferably, if Figure 8 As shown, the X-axis linear drive mechanism 7 includes a guide rod 15, a threaded rod and a linear drive motor. The two ends of the bottom side of the connecting seat 5 are respectively provided with guide rods 15 along the X-axis direction, and the middle part is provided with a threaded rod rotatably along the X-axis direction. One end of the threaded rod is connected to the linear drive motor, and the middle part of the threaded rod is connected to the top of the mounting seat 6 through a nut; sliding grooves are respectively provided on both sides of the top of the mounting seat 6 corresponding to the guide rods 15, and the guide rods 15 are slidably connected to the sliding grooves.

[0035] The utility model realizes the adjustment of the test position of the part to be tested in the X-axis, Y-axis and Z-axis directions through the X-axis linear drive mechanism 7, the Y-axis linear drive mechanism 8 and the lifting test table 2. The utility model drives the X-ray probe 9 and the detector 10 to perform horizontal and vertical tests on the part to be tested through the rotating motor at the free end of the L-shaped cantilever 4, so that the part test is carried out smoothly and the placement stability of the part is guaranteed, as well as the automation of the operation, and has good practicality.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An X-ray residual stress detection device for titanium alloy parts, characterized in that, It includes a housing (1) and a lifting test bench (2), a column (3), an X-axis linear drive mechanism (7), a Y-axis linear drive mechanism (8), an L-shaped cantilever (4), a connecting seat (5), and a mounting seat (6) arranged inside the housing (1); the top of the column (3) is provided with an L-shaped cantilever (4), the free end of the L-shaped cantilever (4) is provided with a connecting seat (5) through a rotating motor, and the rotating motor is used to drive the connecting seat (5) to rotate along the Y-axis; the connecting seat (5) is provided with a mounting seat (6) through an X-axis linear drive mechanism (7), and the X-axis linear drive mechanism (7) is used to drive the mounting seat (6) to move linearly along the X-axis direction of the connecting seat (5); a lifting test bench (2) is arranged below the mounting seat (6), and the Y-axis linear drive mechanism (8) is used to drive the lifting test bench (2) to move linearly along the Y-axis direction; both sides of the mounting seat (6) are respectively provided with an X-ray probe (9) and a detector (10) through a rotating mechanism, and the rotating mechanism is used to drive the X-ray probe (9) and the detector (10) to rotate along the X-axis.

2. The X-ray residual stress detection device for titanium alloy parts according to claim 1, characterized in that, A rotating shaft (11) is rotatably arranged at the free end of the L-shaped cantilever (4), one end of the rotating shaft (11) is fixedly connected to the connecting seat (5), and the other end is connected to the rotating motor, and the rotating motor is mounted on the L-shaped cantilever (4).

3. The X-ray residual stress detection device for titanium alloy parts according to claim 2, characterized in that, Supports (12) are respectively arranged at both ends of the mounting seat (6), a swing arm (13) is hinged inside the support (12), and a driving cylinder (14) is mounted outside the support (12), the driving end of the driving cylinder (14) is connected to the swing arm (13) and is used to drive the swing arm (13) to rotate and swing along the X-axis of the hinged end, and the X-ray probe (9) and the detector (10) are respectively connected to the free ends of the left and right swing arms (13).

4. A titanium alloy part X-ray residual stress detection device according to claim 1, characterized in that, The X-axis linear drive mechanism (7) includes a guide rod (15), a threaded rod, and a linear drive motor. Guide rods (15) are respectively arranged at both ends of the bottom side of the connecting seat (5) along the X-axis direction, and a threaded rod is rotatably arranged in the middle along the X-axis direction. One end of the threaded rod is connected to the linear drive motor, and the middle of the threaded rod is connected to the top connection end of the mounting seat (6) through a nut; chutes are respectively arranged on both sides of the top of the mounting seat (6) corresponding to the guide rods (15), and the guide rods (15) are slidably connected to the chutes.

5. A titanium alloy part X-ray residual stress detection device according to claim 1, characterized in that, The Y-axis linear drive mechanism (8) includes a drive motor, a rack, and a drive gear. Two parallel racks are arranged inside the housing (1) along the Y-axis direction, a lifting test bench (2) is slidably arranged between adjacent racks, drive motors are respectively arranged at both ends of the lifting test bench (2), and drive gears corresponding to the racks are mounted at the drive ends of the drive motors, and the drive gears are engaged with the racks.

6. A titanium alloy part X-ray residual stress detection device according to any one of claims 1-5, characterized in that The cross-section of the ray beam emitted by the X-ray probe (9) is rectangular and is used to form a rectangular focused spot on the part to be measured.

7. An X-ray residual stress detection device for titanium alloy parts according to claim 6, characterized in that, The size of the rectangular focused spot is 5.4mm * 2mm.

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