A torsional shaft residual stress regulation platform

Abstract

The present invention provides a residual stress regulation platform for a torsion shaft, which includes a platform base, a torsion shaft fixing component, a regulator fixing component, a regulation component, a detection component and a computer system. The torsion shaft fixing component includes a V-block and an arc-shaped cover plate. The regulator fixing component includes a vibration exciter fixing base and a fixing cover plate. The regulation component includes a vibration exciter, a controller and an acceleration sensor. The detection component includes an ultrasonic transceiver transducer, a sound wedge block, a control card and a zero stress test block. This device uses the spectral harmonic method for residual stress regulation and the ultrasonic method for residual stress detection. By integrating these two components into a system, it can switch between the residual stress regulation and detection of the torsion shaft, effectively improving the efficiency of residual stress regulation and detection of the torsion shaft, facilitating operation and use, quickly reducing and equalizing the residual stress during the processing of the torsion shaft, achieving the residual stress regulation and detection of torsion shafts with different shapes and specifications, and improving the product quality of the torsion shaft.

Description

Technical Field

[0001] The present invention belongs to the technical field of stress control, and particularly relates to a residual stress regulation platform for a torsion shaft. Background Art

[0002] At present, when processing a torsion shaft, the thermal aging method is generally used to reduce the residual stress generated during processing, but this will bring problems such as thermal deformation. The vibration aging or frequency spectrum harmonic regulation equipment can be used to regulate the residual stress of the torsion shaft, and the regulation cost is relatively low. However, the residual stress detection methods used in combination are the blind hole method or the X-ray diffraction method, and the detection process is relatively complex and time-consuming, which is not conducive to tracking and recording the regulation effect. Using the ultrasonic method to detect the residual stress is convenient for detection, but generally needs to be used in combination with high-energy ultrasonic regulation, and the overall residual stress of the torsion shaft cannot be regulated. In addition, there is no dedicated equipment for the residual stress regulation and detection of the torsion shaft at present, and the batch residual stress regulation and detection work cannot be carried out. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] The present invention provides a residual stress regulation platform for a torsion shaft to solve the technical problem of how to quickly regulate and detect the residual stress of torsion shafts of different specifications.

[0005] (2) Technical Solutions

[0006] To solve the above technical problems, the present invention provides a residual stress regulation platform for a torsion shaft, which includes a platform base, a torsion shaft fixing component, a regulator fixing component, a regulation component, a detection component and a computer system; wherein,

[0007] The platform base serves as an operating platform for the residual stress regulation and detection of the torsion shaft.

[0008] The torsion shaft fixing component includes a V-block and an arc-shaped cover plate; wherein, a V-groove for fixing the torsion shaft is machined on the upper part of the V-block. According to the shape of the torsion shaft to be regulated, a plurality of V-blocks are fastened to the platform base by bolts. The torsion shaft is placed in the V-groove of the V-block, and the arc-shaped cover plate is fastened to the V-block by bolts to press and fix the torsion shaft, so as to regulate the residual stress of the torsion shaft with any shape; the size of the V-groove of the V-block and the curved arc surface of the arc-shaped cover plate are both matched with the diameter of the torsion shaft.

[0009] The regulator fixing component includes a vibrator fixing base and a fixing cover plate; wherein, the vibrator fixing base is fastened to the platform base by internal hexagonal bolts, and the fixing groove of the vibrator fixing base is used to place the vibrator in the regulation component. The fixing cover plate is fastened to the vibrator fixing base by bolts to press and fix the vibrator.

[0010] The regulation component includes a vibrator, a controller, and an acceleration sensor; the vibrator and the acceleration sensor are respectively connected to the controller through regulation cables, and the controller is connected to a computer system; among them, the vibrator is fixed in the fixed slot of the vibrator fixed base and is fixed by a fixed cover plate. The vibrator is used to vibrate the platform base at a set frequency under the control of the controller, driving the torsion shaft to be regulated to vibrate; the acceleration sensor is adsorbed on the platform base and is used to collect the vibration data of the torsion shaft to be regulated; the controller is used to control the vibration frequency and amplitude of the vibrator, analyze the vibration spectrum data of the torsion shaft to be regulated based on the vibration data collected by the acceleration sensor, and transmit it to the computer system; the computer system controls the vibration of the vibrator through the controller according to the set regulation strategy;

[0011] The detection component includes an ultrasonic transceiver transducer, a wedge block, a control card, and a zero-stress test block; among them, the wedge block is a set of wedge blocks with different radian and diameters processed according to the radian and diameter of the detection area of the torsion shaft. When in use, it is placed on the torsion shaft to be detected and is used for the residual stress detection of different types of torsion shafts; the ultrasonic transceiver transducer is placed in the two inclined slots of the wedge block and is connected to the control card through a detection cable; the control card is connected to the computer system and is used to control the ultrasonic wave emission and reception of the ultrasonic transceiver transducer; the computer system analyzes the surface residual stress of the torsion shaft to be detected according to the time difference of ultrasonic wave transmission and reception calculated by the control card; the zero-stress test block is a set of calibration test blocks made of common torsion shaft materials.

[0012] (III) Beneficial effects

[0013] The present invention proposes a residual stress regulation platform for a torsion shaft, which includes a platform base, a torsion shaft fixing component, a regulator fixing component, a regulation component, a detection component, and a computer system. The torsion shaft fixing component includes a V-shaped block and an arc-shaped cover plate, the regulator fixing component includes a vibrator fixed base and a fixed cover plate, the regulation component includes a vibrator, a controller, and an acceleration sensor, and the detection component includes an ultrasonic transceiver transducer, a wedge block, a control card, and a zero-stress test block. This device uses the spectrum harmonic method for residual stress regulation and the ultrasonic method for residual stress detection. By integrating these two components into a system, it can switch between the residual stress regulation and detection of the torsion shaft, effectively improving the efficiency of residual stress regulation and detection of the torsion shaft, facilitating operation and use, quickly reducing and equalizing the residual stress in the torsion shaft processing process, realizing the residual stress regulation and detection of torsion shafts with different shapes and specifications, and improving the quality of torsion shaft products. Description of the drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the residual stress regulation platform according to the embodiment of the present invention;

[0015] Figure 2Schematic diagram of the structure of the torsion shaft fixing component in the embodiment of the present invention. Detailed implementation manners

[0016] To make the objectives, contents and advantages of the present invention clearer, the following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings and embodiments.

[0017] This embodiment provides a regulation platform for the residual stress of a torsion shaft. This platform uses a torsion shaft fixing component to fix the torsion shaft to be regulated, and uses a regulation component and a detection component to carry out the regulation and detection of the residual stress of the torsion shaft. As Figure 1 shown, this residual stress regulation platform includes a platform base 12, a torsion shaft fixing component, a regulator fixing component, a regulation component, a detection component, and a computer system 1.

[0018] The platform base 12 serves as an operating platform for the regulation and detection of the residual stress of the torsion shaft.

[0019] The torsion shaft fixing component includes a V-block 14 and an arc-shaped cover plate 15, as Figure 2 shown. Among them, a V-groove for fixing the torsion shaft is machined on the upper part of the V-block 14. According to the shape of the torsion shaft to be regulated, multiple V-blocks 14 are fastened at appropriate positions on the platform base 12 through first inner hexagon bolts 16. The torsion shaft is placed in the V-groove of the V-block 14, and the arc-shaped cover plate 15 is fastened to the V-block 14 through the first inner hexagon bolts 16, thereby pressing and fixing the torsion shaft, and realizing the regulation of the residual stress of the torsion shaft with any shape. The V-groove of the V-block 14 and the curved arc surface of the arc-shaped cover plate 15 are both matched with the diameter of the torsion shaft.

[0020] The regulator fixing component includes a vibration exciter fixing base 10 and a fixing cover plate 11. Among them, the vibration exciter fixing base 10 is fastened to the platform base 12 through second inner hexagon bolts 13. The fixing groove of the vibration exciter fixing base 10 is used to place the vibration exciter 2 in the regulation component, and the fixing cover plate 11 is fastened to the vibration exciter fixing base 10 through the second inner hexagon bolts 13, thereby pressing and fixing the vibration exciter 2.

[0021] The regulation component includes a vibrator 2, a controller 3, and an acceleration sensor 4. The vibrator 2 and the acceleration sensor 4 are respectively connected to the controller 3 through regulation cables 5, and the controller 3 is connected to the computer system 1. Among them, the vibrator 2 is fixed in the fixed slot of the vibrator fixed base 10 and is tightly fixed by the fixed cover plate 11. The vibrator 2 is used to vibrate the platform base 12 at a set frequency under the control of the controller 3, driving the torsion shaft to be regulated to vibrate. The acceleration sensor 4 has magnetism and is adsorbed on the platform base 12, and is used to collect the vibration data of the torsion shaft to be regulated. The controller 3 is used to control the vibration frequency and amplitude of the vibrator 2, analyze the vibration spectrum data of the torsion shaft to be regulated based on the vibration data collected by the acceleration sensor 4, and transmit it to the computer system 1. The computer system 1 performs vibration control on the vibrator 2 through the controller 3 according to the set regulation strategy.

[0022] When regulating the residual stress of the torsion shaft, the computer system 1 transmits relevant information such as the material parameters of the torsion shaft to be regulated to the controller 3. The controller 3 controls the vibrator 2 to vibrate at different frequencies, thereby driving the torsion shaft to be regulated to vibrate at the same frequency. The controller 3 uses the acceleration sensor 4 to collect the vibration data of the torsion shaft, analyzes the harmonic frequencies of various torsion shafts to be regulated by the Fourier method, obtains the vibration spectrum data of the torsion shaft, and feeds it back to the computer system 1. The computer system 1 selects appropriate spectral harmonics according to the set regulation strategy, drives the vibrator 2 to vibrate through the controller 3, so that the vector sum of the residual stress and the additional vibration stress of the torsion shaft exceeds the material yield strength, and then undergoes a small amount of plastic deformation, realizing the multi-dimensional elimination of the residual stress of the torsion shaft to be regulated.

[0023] The detection component includes an ultrasonic transceiver transducer 6, a wedge block 7, a control card 8, a detection cable 9, and a zero-stress test block. The wedge block 7 is a set of wedge blocks with different radian and diameters processed according to the radian and diameter of the detection area of the torsion shaft. When in use, it is placed on the torsion shaft to be detected and is used for detecting the residual stress of different types of torsion shafts. The ultrasonic transceiver transducer 6 is placed in the two inclined slots of the wedge block 7 and is connected to the control card 8 through the detection cable 9. The control card 8 is connected to the computer system 1 and is used to control the ultrasonic transceiver transducer 6. The zero-stress test block is a set of calibration test blocks made of common torsion shaft materials.

[0024] When detecting the residual stress of a torsion shaft, first select a corresponding zero-stress test block according to the material of the torsion shaft to be detected and calibrate the ultrasonic detection parameters. This is because the ultrasonic detection uses the acoustoelastic principle, and the propagation speed of ultrasonic waves is different under different residual stress conditions. It is necessary to perform orthogonal calculations on the detection data of the detected material and the zero-stress test block to obtain the residual stress value of the detected material relative to the zero-stress test block. Secondly, place the ultrasonic transceiver 6 in two circular grooves arranged at a certain angle on the acoustic wedge block 7 respectively to facilitate the transmission and reception of ultrasonic waves. The computer system 1 transmits information such as the material parameters of the torsion shaft to be detected to the control card 8, and the control card 8 controls the ultrasonic transceiver 6 to send a 5MHz critical refraction longitudinal wave for transmission and reception. The longitudinal wave enters the surface layer of the torsion shaft to be detected after passing through the acoustic wedge block 7, then rebounds a part of the longitudinal wave and re-enters the acoustic wedge block 7, and is then detected by the ultrasonic transceiver 6. Finally, the control card 8 calculates the time difference between the transmission and reception of ultrasonic waves and transmits it to the computer system 1. The computer system 1 analyzes the relevant information to obtain the relevant information such as the surface residual stress of the torsion shaft to be detected and obtains a detection report on the residual stress of the torsion shaft.

[0025] In summary, the present invention can be used for the regulation of the residual stress of the torsion shaft and has the ability to detect the residual stress. Place the appropriate V-shaped block in the appropriate position on the regulation platform according to the shape of the torsion shaft and fix the torsion shaft with an arc-shaped cover plate to achieve the regulation of the residual stress of the torsion shaft with different diameters and shapes. The computer system, controller and control card of the present invention can integrate and combine the three parts of the hardware into a dedicated device, enabling a residual stress regulation device to have both the ability to regulate and detect the residual stress at the same time, and can also independently carry out the work of regulating and detecting the residual stress, and has the ability to regulate torsion shafts of various different specifications.

[0026] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A residual stress regulation platform for a torsion shaft, characterized in that The residual stress regulation platform includes a platform base, a torsion shaft fixing component, a regulator fixing component, a regulation component, a detection component, and a computer system; among them, The platform base serves as an operating platform for the regulation and detection of the residual stress of the torsion shaft; The torsion shaft fixing component includes a V-block and an arc-shaped cover plate; among them, a V-groove for fixing the torsion shaft is machined on the upper part of the V-block. According to the shape of the torsion shaft to be regulated, multiple V-blocks are fastened to the platform base by first inner hexagon bolts. The torsion shaft is placed in the V-groove of the V-block, and the arc-shaped cover plate is fastened to the V-block by first inner hexagon bolts to press and fix the torsion shaft, so as to regulate the residual stress of the torsion shaft with any shape; the V-groove of the V-block and the curved arc surface of the arc-shaped cover plate are both matched in size with the diameter of the torsion shaft; The regulator fixing component includes a vibrator fixing base and a fixing cover plate; among them, the vibrator fixing base is fastened to the platform base by second inner hexagon bolts. The fixing groove of the vibrator fixing base is used to place the vibrator in the regulation component, and the fixing cover plate is fastened to the vibrator fixing base by second inner hexagon bolts to press and fix the vibrator; The regulation component includes a vibrator, a controller, and an acceleration sensor; the vibrator and the acceleration sensor are respectively connected to the controller through regulation cables, and the controller is connected to the computer system; among them, the vibrator is fixed in the fixing groove of the vibrator fixing base and is pressed and fixed by the fixing cover plate. The vibrator is used to vibrate the platform base at a set frequency under the control of the controller, driving the torsion shaft to be regulated to vibrate; the acceleration sensor is adsorbed on the platform base and is used to collect the vibration data of the torsion shaft to be regulated; the controller is used to control the vibration frequency and amplitude of the vibrator, analyze the vibration spectrum data of the torsion shaft to be regulated according to the vibration data collected by the acceleration sensor, and transmit it to the computer system; the computer system controls the vibration of the vibrator through the controller according to the set regulation strategy; The detection component includes an ultrasonic transceiver transducer, a sound wedge block, a control card, and a zero-stress test block; among them, the sound wedge block is a set of wedge blocks with different radian and diameters machined according to the radian and diameter of the detection area of the torsion shaft. When in use, it is placed on the torsion shaft to be detected and is used for the detection of the residual stress of different types of torsion shafts; the ultrasonic transceiver transducer is placed in the two inclined grooves of the sound wedge block and is connected to the control card through a detection cable; the control card is connected to the computer system and is used to control the ultrasonic wave emission and reception of the ultrasonic transceiver transducer; the computer system analyzes the surface residual stress of the torsion shaft to be detected according to the time difference of ultrasonic wave transmission and reception calculated by the control card; the zero-stress test block is a set of calibration test blocks made of common torsion shaft materials.

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