Metal workpiece clamping mechanism and temperature control laser shock peening device using same

Abstract

The metal workpiece clamping mechanism comprises a clamping bottom plate, a follow-up base table and a driving base table are arranged at the two ends of the upper surface of the clamping bottom plate respectively, a bearing base is arranged in a cavity of the follow-up base table in a rotating mode, a first rotating disc is arranged in the bearing base in a rotating mode, and a second rotating disc is arranged in the first rotating disc in a rotating mode. A lifting air cylinder for controlling the height of the driving base table is arranged at the bottom of the driving base table, a second rotating disc is rotationally arranged on one side of the driving base table, a driving motor is arranged at the other end of the second rotating disc, and a rotating bottom plate is arranged between the first rotating disc and the second rotating disc and changes the inclination angle under the action of the lifting air cylinder. A plurality of groups of lifting parts are uniformly distributed on the upper surface of the rotating bottom plate, a plurality of groups of stabilizing components for clamping metal workpieces are arranged on the side edge of the upper surface of the rotating bottom plate, and the metal impact strengthening device can cater to special impact strengthening angles of some metal parts with uneven surfaces, so that the strength and the fatigue performance of metal are improved to a greater extent.

Description

Technical Field

[0001] The utility model belongs to the field of laser shock strengthening devices, in particular to a metal workpiece clamping mechanism and a temperature-controlled laser shock strengthening device using the mechanism. Background Art

[0002] The laser shock peening device is a device that uses the plasma shock wave generated by a strong laser beam to strengthen the metal surface. This method can eliminate the tensile residual stress on the surface of the metal workpiece, thereby improving the surface strength and fatigue performance of the metal workpiece. Preheating the metal workpiece and then performing laser shock peening often produces unexpected results, which can greatly improve the strength and fatigue performance of the metal.

[0003] Among them, document 202310270585.8 discloses a temperature-controlled laser shock strengthening device and processing method with water as a constraint layer. The device introduces ultra-high pressure in the high-pressure chamber to avoid the evaporation of water, thereby successfully using water as a constraint layer for high-temperature laser shock strengthening. It can not only process workpieces of different shapes, but also facilitate cleaning after processing. However, with long-term use feedback, the following new problems have emerged: When the surface of the processed metal object is uneven, especially objects with inclined surfaces, the existing horizontal moving platform and the up and down movement of the laser head cannot adapt to the impact strengthening of the inclined surface. The inclined surface after direct impact is prone to ripples. For this reason, practitioners have designed a metal workpiece clamping mechanism and a temperature-controlled laser shock strengthening device using the mechanism to optimize the impact strengthening of the inclined surfaces of metal parts with uneven surfaces. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the metal workpiece clamping mechanism of the existing laser shock strengthening device cannot adapt to the special angle impact strengthening of the inclined surfaces of some metal parts with uneven surfaces, and to provide a metal workpiece clamping mechanism and a temperature-controlled laser shock strengthening device using the mechanism.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions: a metal workpiece clamping mechanism comprises a clamping base plate, a follower base and a driving base are respectively arranged at two ends of the upper surface of the clamping base plate, a bearing base is rotatably arranged in the cavity of the follower base, a first rotating disk is rotatably arranged in the bearing base, a lifting cylinder for controlling its height is arranged at the bottom of the driving base, a second rotating disk is rotatably arranged on one side of the driving base, and a driving motor for controlling its rotation is arranged at the other end of the driving base relative to the second rotating disk, a rotating base plate is arranged between the first rotating disk and the second rotating disk, and the rotating base plate can change its inclination angle under the action of the lifting cylinder, a plurality of groups of lifting members are evenly distributed on the upper surface of the rotating base plate, and a plurality of groups of stabilizing components for clamping the metal workpiece are arranged on the side of the upper surface of the rotating base plate.

[0006] Furthermore, the lifting member includes a lifting bottom cylinder fixedly arranged on the upper surface of the rotating bottom plate, a raising column is arranged in the cavity of the lifting bottom cylinder, a supporting plate is arranged at the end of the raising column, and an anti-slip texture is arranged on the upper surface of the supporting plate.

[0007] Furthermore, an adjustment groove is provided on the upper surface of the rotating base plate located at the stabilizing component, and the stabilizing component is slidably arranged in the adjustment groove. The stabilizing component and the rotating base plate are matched with each other through a first locking bolt.

[0008] Furthermore, the stabilizing component includes a stabilizing base slidably arranged in the adjusting groove, a nitrogen spring is slidably arranged in the stabilizing base, the nitrogen spring and the stabilizing base are matched with each other through a second locking bolt, a clamp is arranged at the end of the nitrogen spring, and a plurality of groups of serrations are arranged on the front surface of the clamp.

[0009] A temperature-controlled laser shock strengthening device comprises a laser strengthening workbench and any of the above-mentioned metal workpiece clamping mechanisms, wherein beams are drivenly arranged on both sides of the upper surface of the laser strengthening workbench, a laser head is drivenly arranged on the beams, a high-pressure chamber is arranged on the upper surface of the laser strengthening workbench, a light-transmitting mirror is arranged on the upper surface of the high-pressure chamber, a heating chamber is arranged in the cavity of the high-pressure chamber, the heating chamber is a rectangular cavity with an opening on the upper surface, the metal workpiece clamping mechanism is arranged in the cavity of the heating chamber, a water inlet and a water outlet are respectively arranged on the side walls of the heating chamber, and a valve is arranged on the water outlet.

[0010] Beneficial effects: The utility model has reasonable design, simple and stable structure, strong practicality, and has the following beneficial effects:

[0011] 1. The cooperation between the lifting cylinder and the bearing base can realize the tilting of the rotating base plate at one angle, and the cooperation between the driving motor and the second rotating disk can realize the tilting of the rotating base plate at another angle, so as to cope with the special slope of objects with uneven surfaces;

[0012] 2. The setting of the lifting piece can lift the metal objects and prevent them from directly contacting with the rotating bottom plate, so as to ensure that after adding water inside the heating chamber, it can fully contact with the metal objects;

[0013] 3. The setting of the stable component is limited by its horizontal adjustment position to adapt to the clamping of metal objects of different sizes. Secondly, the height adjustment of the clamp can also adapt to the effective clamping of metal objects of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the heating chamber of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the metal workpiece clamping mechanism of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the lifting member of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the stabilizing component of the utility model.

[0019] In the figure: 1-clamping base plate, 2-follow-up base, 3-driving base, 4-bearing base, 5-first rotating disk, 6-lifting cylinder, 7-second rotating disk, 8-driving motor, 9-rotating base plate, 10-lifting member, 11-stabilizing component, 12-adjusting slot, 13-first locking bolt, 14-laser strengthening workbench, 15-crossbeam, 16-laser head, 17-high pressure chamber, 18-light-transmitting mirror, 19-heating chamber, 20-water inlet, 21-water outlet, 22-valve;

[0020] 1001-lifting bottom tube, 1002-raising column, 1003-supporting plate, 1101-stable base, 1102-nitrogen spring, 1103-second locking bolt, 1104-clamp. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1:

[0023] Combination Figure 3 The metal workpiece clamping mechanism shown in the figure includes a clamping base plate 1, which is the main mechanism installation component. A follower base 2 and a driving base 3 are respectively arranged at both ends of the upper surface of the clamping base plate 1. A bearing base 4 is rotatably arranged in the follower base cavity. A first rotating disk 5 is rotatably arranged in the bearing base 4. The bearing base 4 has its own rotating bearing, so that the first rotating disk 5 can rotate effectively, and a follower space is reserved between the first rotating disk 5 and the bearing base 4 before installation, so as to effectively prevent the subsequent lifting cylinder 6 from driving the driving base 3 to move up and down. The bottom of the driving base 3 is provided with a lifting cylinder 6 for controlling its height, and a second rotating disk 7 is rotatably arranged on one side of the driving base 3, and the other end of the driving base 3 relative to the second rotating disk 7 is provided There is a driving motor 8 for controlling its rotation, and a rotating base plate 9 is arranged between the first rotating disk 5 and the second rotating disk 7. The rotating base plate 9 can change its tilt angle under the action of the lifting cylinder 6. In addition, under the drive of the driving motor 8, another tilt angle of the rotating base plate 9 can be changed, so as to adapt to the special inclined surface of the metal parts with uneven surfaces. Several groups of lifting members 10 are evenly distributed on the upper surface of the rotating base plate 9. The lifting members 10 are used to lift the metal objects, so as to ensure that after water is added to the hot warehouse 18 later, it can fully contact the metal objects. Several groups of stabilizing components 11 for clamping metal workpieces are arranged on the side of the upper surface of the rotating base plate 9. The stabilizing components 11 are used to fix the metal objects to prevent them from sliding on the rotating base plate 9 during the angle adjustment process.

[0024] In this embodiment, the Figure 4 The lifting member 10 shown includes a lifting base cylinder 1001 fixedly arranged on the upper surface of the rotating base plate 9, and a raising column 1002 is arranged in the cavity of the lifting base cylinder 1001. The installation method of the raising column 1002 being arranged in the lifting base cylinder 1001 can ensure the supporting strength of the raising column 1002, so as to cope with some plates with larger dead weight. A supporting sheet 1003 is arranged at the end of the raising column 1002, and an anti-slip texture is arranged on the upper surface of the supporting sheet 1003. The supporting sheet 1003 is used to increase the contact area with the metal plate, so as to increase the friction between the two, thereby avoiding the shaking of the metal workpiece when the angle is rotated. The same anti-slip texture is also for increasing the friction between the two.

[0025] In this embodiment, an adjustment groove 12 is provided on the upper surface of the rotating base plate 9 located at the stabilizing component 11, and the stabilizing component 11 is slidably arranged in the adjustment groove 12. The stabilizing component 11 and the rotating base plate 9 are matched through a first locking bolt 13. This setting method can change the position of the stabilizing component 11 by simply adjusting the tightness of the first locking bolt 13, so that its position can be adapted to metal workpieces of different specifications.

[0026] In this embodiment, the Figure 5 The stabilizing component 11 shown includes a stabilizing base 1101 slidably arranged in the adjusting groove 12, and a nitrogen spring 1102 is slidably arranged in the stabilizing base 1101. The nitrogen spring 1102 is an existing elastic functional element. The nitrogen spring 1102 and the stabilizing base 1101 are matched through a second locking bolt 1103. A clamp 1104 is arranged at the end of the nitrogen spring 1102, and a plurality of groups of serrations are arranged on the front surface of the clamp 1104. First, the height of the nitrogen spring 1102 can be adjusted by the second locking bolt 1103, so that the clamp 1104 can effectively contact the side wall of the metal workpiece to be processed. In addition, the serrations of the clamp 1104 can prevent the metal workpiece from slipping during the tilting process.

[0027] Combination Figure 1-2 The temperature-controlled laser shock strengthening device shown in the figure includes a laser strengthening workbench 14 and any metal workpiece clamping mechanism. The upper surface of the laser strengthening workbench 14 is driven by beams 15 on both sides. A laser head 16 is driven on the beam 15. The horizontal and vertical driving of the laser head 16 can effectively adapt to the position adjustment of the metal part processing process. A high-pressure chamber 17 is arranged on the upper surface of the laser strengthening workbench 14. The high-pressure chamber 17 is used to create different pressure environments in the cavity during subsequent processing. A light-transmitting mirror 18 is arranged on the upper surface of the high-pressure chamber 17. A high-pressure chamber 17 is arranged in the cavity There is a heating chamber 19, which is used to preheat the workpiece. The heating chamber 19 is a rectangular cavity with an opening on the upper surface, which is convenient for direct contact with the environment created by the high-pressure chamber 17. The metal workpiece clamping mechanism is arranged in the cavity of the heating chamber 19. A water inlet 20 and a water outlet 21 are respectively arranged on the side walls of the heating chamber 19, and a valve 22 is arranged on the water outlet 21. The arrangement of the water inlet 20 and the water outlet 21 is convenient for the subsequent addition of water to the heating chamber 19, thereby realizing the impact strengthening of the metal object in the state of water as the constraint layer. At the same time, the valve 22 is convenient for the subsequent drainage and removal of the metal object.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A metal workpiece clamping mechanism, comprising a clamping base plate (1), wherein two ends of an upper surface of the clamping base plate (1) are respectively provided with a follower base plate (2) and a driving base plate (3), wherein: A bearing base (4) is rotatably arranged in the cavity of the follower base, a first rotating disk (5) is rotatably arranged in the bearing base (4), a lifting cylinder (6) for controlling the height of the driving base (3) is arranged at the bottom, a second rotating disk (7) is rotatably arranged on one side of the driving base (3), a driving motor (8) for controlling the rotation of the second rotating disk (7) is arranged at the other end of the driving base (3) relative to the second rotating disk (7), a rotating base plate (9) is arranged between the first rotating disk (5) and the second rotating disk (7), the rotating base plate (9) can change its tilt angle under the action of the lifting cylinder (6), a plurality of groups of lifting members (10) are evenly distributed on the upper surface of the rotating base plate (9), and a plurality of groups of stabilizing components (11) for clamping metal workpieces are arranged on the side of the upper surface of the rotating base plate (9).

2. The metal workpiece clamping mechanism according to claim 1, characterized in that: The lifting member (10) comprises a lifting base cylinder (1001) fixedly arranged on the upper surface of the rotating base plate (9), a raising column (1002) being arranged in the cavity of the lifting base cylinder (1001), a supporting plate (1003) being arranged at the end of the raising column (1002), and an anti-slip texture being arranged on the upper surface of the supporting plate (1003).

3. The metal workpiece clamping mechanism according to claim 2, characterized in that: An adjustment groove (12) is provided on the upper surface of the rotating base plate (9) located at the stabilizing component (11), and the stabilizing component (11) is slidably arranged in the adjustment groove (12). The stabilizing component (11) and the rotating base plate (9) are matched via a first locking bolt (13).

4. The metal workpiece clamping mechanism according to claim 3, characterized in that: The stabilizing component (11) comprises a stabilizing base (1101) slidably arranged in the adjusting groove (12), a nitrogen spring (1102) being slidably arranged in the stabilizing base (1101), the nitrogen spring (1102) and the stabilizing base (1101) being matched with each other via a second locking bolt (1103), a clamping piece (1104) being arranged at the end of the nitrogen spring (1102), and a plurality of groups of saw teeth being arranged on the front surface of the clamping piece (1104).

5. Temperature-controlled laser shock peening device, characterized in that: It comprises a laser strengthening workbench (14) and a metal workpiece clamping mechanism as claimed in any one of claims 1 to 4, wherein beams (15) are drivenly arranged on both sides of the upper surface of the laser strengthening workbench (14), a laser head (16) is drivenly arranged on the beam (15), a high-pressure chamber (17) is arranged on the upper surface of the laser strengthening workbench (14), a light-transmitting mirror (18) is arranged on the upper surface of the high-pressure chamber (17), a heating chamber (19) is arranged in the cavity of the high-pressure chamber (17), the heating chamber (19) is a rectangular cavity with an opening on the upper surface, the metal workpiece clamping mechanism is arranged in the cavity of the heating chamber (19), a water inlet (20) and a water outlet (21) are respectively arranged on the side walls of the heating chamber (19), and a valve (22) is arranged on the water outlet (21).

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