A rapid positioning and clamping device and method for a flame detector used in laser shock peening

Abstract

The present invention belongs to the technical field of laser shock peening clamping equipment, and discloses a rapid positioning and clamping device and method for a flame detector used in laser shock peening, which includes a fixture positioning pin (2), a base (3), a pressing ring (4), a stud ball positioning screw (5), a flame detector (6) and a workpiece positioning pin (7). The fixture positioning pin (2) is installed on the upper side of the base (3), and the workpiece positioning pin (7) is installed on the inner bottom surface of the base (3). The flame detector (6) is installed on the inner bottom surface of the base (3) and is horizontally limited by the workpiece positioning pin (7). The pressing ring (4) is installed on the inner side surface of the base (3), and a stud ball positioning screw (5) is installed at the bottom of the pressing ring (4). When the pressing ring (4) is pressed down, the stud ball positioning screw (5) vertically limits the flame detector (6).

Description

Technical Field

[0001] The invention belongs to the technical field of laser shock peening clamping equipment, and particularly relates to a rapid positioning and clamping device and method for a flame detector used in laser shock peening. Background Art

[0002] Laser shock peening technology is one of the most advanced surface strengthening technologies for metal materials at present. It uses short pulses (ns level) and high peak power density (above 109 W / cm 2 2) lasers to penetrate the constraint layer and impact the laser absorption protective film covering the metal surface, generating a high-pressure transient plasma shock wave. The shock wave pressure up to GPa generates high-strain plastic deformation on the surface layer of the metal material, forming a large residual compressive stress. At the same time, the microstructure changes greatly, which can significantly improve the fatigue performance of metal materials such as resistance to external force damage and corrosion.

[0003] During the process of laser shock peening the flame detector, when installing the flame detector, the process is cumbersome, the operation is inconvenient, the positioning is complex and inaccurate. Each time the flame detector is installed, it needs to be repositioned and adjusted, and it is easy to clamp the workpiece. Therefore, it is necessary to develop a rapid positioning and clamping device for the flame detector used in laser shock peening. Summary of the Invention

[0004] The purpose of the invention is to overcome the above-mentioned deficiencies of the prior art, and provide a rapid positioning and clamping device and method for a flame detector used in laser shock peening, and solve the problems existing in the prior art.

[0005] To solve the technical problems, the technical solution of the invention is: a rapid positioning and clamping device for a flame detector used in laser shock peening, including a fixture positioning pin, a base, a pressure ring, a stud ball positioning screw, a flame detector and a workpiece positioning pin. The fixture positioning pin is installed on the upper side of the base, and the workpiece positioning pin is installed on the inner bottom surface of the base. The flame detector is installed on the inner bottom surface of the base and is horizontally limited by the workpiece positioning pin. The pressure ring is installed on the inner side of the base, and a stud ball positioning screw is installed at the bottom of the pressure ring. When the pressure ring is pressed down, the stud ball positioning screw vertically limits the flame detector.

[0006] Preferably, the base includes an upper flange, a mounting bracket and a base bottom plate. The upper flange is fixed to the upper end surface of the mounting bracket, and the base bottom plate is fixed to the lower end surface of the mounting bracket. The fixture positioning pin is installed on one side of the upper flange, and the workpiece positioning pin is installed on the upper end surface of the base bottom plate.

[0007] Preferably, a front-side opening is formed in the circumferential front side of the mounting bracket, a rear-side opening window is formed in the circumferential rear side of the mounting bracket, a left-side opening window is formed in the circumferential left side of the mounting bracket, and a right-side opening window is formed in the circumferential right side of the mounting bracket. The pressure ring is mounted on the inner side surface of the base, and the mounting position of the pressure ring is lower than that of the left-side opening window and the right-side opening window.

[0008] Preferably, positioning holes are provided at corresponding positions on both sides of the pressure ring and the mounting bracket. The damping hinge is mounted in the positioning holes, and the pressure ring and the mounting bracket are connected through the damping hinge. Fixing holes are provided at the lower edges of the left-side opening window and the right-side opening window, and the fixing holes are communicated with the positioning holes. The damping hinge is fixed by an internal hexagon screw passing through the fixing holes.

[0009] Preferably, a limit hole is formed in the mounting bracket on the lower side of the rear-side opening window, and the pressure ring is pressed tightly at the rear side by a ball plunger screw passing through the limit hole.

[0010] Preferably, a fixture positioning pin threaded hole is provided on one side surface of the upper flange. The fixture positioning pin is threadedly mounted in the fixture positioning pin threaded hole. The fixture positioning pin threaded hole and the front-side opening are arranged on the same side of the base. When clamping, the three-jaw chuck connected to the robot clamps the outer circle of the upper flange, and one jaw of the three-jaw chuck corresponds to the position of the fixture positioning pin.

[0011] Preferably, the base bottom plate is U-shaped, and a workpiece positioning pin threaded hole is provided on the base bottom plate. The workpiece positioning pin is threadedly mounted in the workpiece positioning pin threaded hole.

[0012] Preferably, one end of the workpiece positioning pin is a threaded structure, and the other end of the workpiece positioning pin is a cylindrical pin structure. The threaded structure is mounted in the workpiece positioning pin threaded hole, and the cylindrical pin structure is sleeved in the mounting hole of the flame detector for horizontal direction limiting of the flame detector. The workpiece positioning pin is made of polytetrafluoroethylene material.

[0013] Preferably, the pressure ring is of a C-shaped structure, and three stud ball plunger positioning screws are equidistantly mounted along the vertical direction at the bottom of the pressure ring. The pin heads of the stud ball plunger positioning screws are made of plastic POM material.

[0014] Preferably, a clamping method for the quick positioning and clamping device of the flame detector for laser shock peening as described in any one of the above items includes the following steps:

[0015] Step 1: Fix and mount the fixture positioning pin on the upper side of the base through threads, and use the three-jaw chuck connected to the robot to clamp the upper side of the base, so that one jaw of the three-jaw chuck corresponds to the position of the fixture positioning pin for quickly positioning the installation position of the clamping device;

[0016] Step 2: Mount the workpiece positioning pin on the inner bottom surface of the base;

[0017] Step 3: Mount the pressure ring on the inner side surface of the base;

[0018] Step 4: Then install the flame detector inside the base, and fix the horizontal position of the flame detector through two workpiece positioning pins;

[0019] Step 5: Press down the pressing ring, press the flame detector tightly through the stud bead positioning screw at the bottom of the pressing ring, and then fix and press the pressing ring to fix the vertical position of the flame detector.

[0020] Compared with the prior art, the advantages of the present invention are as follows:

[0021] (1) The present invention discloses a quick positioning and clamping device for a flame detector used in laser shock peening. The upper flange mounting fixture positioning pin on the upper side of the base is adopted. When clamping, the three-jaw chuck connected to the robot clamps the outer circle of the upper flange, and one jaw of the three-jaw chuck corresponds to the position of the fixture positioning pin, so as to realize the positioning of the installation position. The workpiece positioning pin is installed on the inner bottom surface of the base. The flame detector is placed on the workpiece positioning pin and is horizontally limited by the workpiece positioning pin. Press down the pressing ring, fix the flame detector through the pressing ring, and limit the flame detector in the vertical direction by pressing the stud bead positioning screw of the pressing ring, which can realize the quick positioning and clamping of the flame detector. The installation process is simple, the positioning is simple and accurate, and there is no need to reposition and adjust when installing the flame detector each time;

[0022] (2) The base and the pressing ring of the present invention are connected by a damping hinge, and a bead screw is installed on the rear side of the base. When pressing down the pressing ring, the bead screw presses the rear side of the pressing ring tightly, so as to limit the flame detector in the vertical direction and realize the stability of clamping the flame detector;

[0023] (3) The pin head of the stud bead positioning screw for pressing the flame detector of the present invention is made of plastic POM material to avoid damage to the flame detector when pressing; the workpiece positioning pin is made of polytetrafluoro material to protect the flame detector from being damaged;

[0024] (4) The structure of the present invention is reasonable, the operation is simple, it is convenient to promote and use, and it realizes the quickness, positioning accuracy and clamping stability when replacing the flame detector. Description of the Drawings

[0025] Figure 1 Structural schematic diagram of a quick positioning and clamping device for a flame detector used in laser shock peening of the present invention;

[0026] Figure 2 Side sectional structural schematic diagram of a quick positioning and clamping device for a flame detector used in laser shock peening of the present invention.

[0027] Description of the reference numerals:

[0028] 1. Three-jaw chuck, 2. Fixture positioning pin, 3. Base, 4. Pressure ring, 5. Stud ball positioning screw, 6. Flame detector, 7. Workpiece positioning pin, 8. Damping hinge, 9. Allen screw, 10. Ball screw;

[0029] 3-1. Upper flange, 3-2. Mounting bracket, 3-3. Base bottom plate;

[0030] 3-2-1. Front side opening, 3-2-2. Rear side window, 3-2-3. Left side window, 3-2-4. Right side window, 3-2-5. Positioning hole, 3-2-6. Fixing hole, 3-2-7. Limit hole. Specific implementation mode

[0031] The specific implementation mode of the present invention will be described below in conjunction with the embodiments:

[0032] It should be noted that the structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0033] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the implementation scope of the present invention. The change or adjustment of their relative relationship, without substantial change of the technical content, should also be regarded as the implementable scope of the present invention.

[0034] Embodiment 1

[0035] As Figures 1-2 shown, the present invention discloses a rapid positioning and clamping device for a flame detector used in laser shock peening, including a fixture positioning pin 2, a base 3, a pressure ring 4, a stud ball positioning screw 5, a flame detector 6 and a workpiece positioning pin 7. The fixture positioning pin 2 is installed on the upper side of the base 3, the workpiece positioning pin 7 is installed on the inner bottom surface of the base 3, the flame detector 6 is installed on the inner bottom surface of the base 3 and is horizontally limited by the workpiece positioning pin 7, the pressure ring 4 is installed on the inner side surface of the base 3, and a stud ball positioning screw 5 is installed at the bottom of the pressure ring 4. When the pressure ring 4 is pressed down, the stud ball positioning screw 5 vertically limits the flame detector 6.

[0036] Embodiment 2

[0037] Preferably, as Figures 1-2As shown in the figure, the base 3 includes an upper flange 3-1, a mounting bracket 3-2, and a base bottom plate 3-3. The upper flange 3-1 is fixed to the upper end face of the mounting bracket 3-2, and the base bottom plate 3-3 is fixed to the lower end face of the mounting bracket 3-2. The fixture positioning pin 2 is installed on one side of the upper flange 3-1, and the workpiece positioning pin 7 is installed on the upper end face of the base bottom plate 3-3.

[0038] Preferably, as Figures 1-2 shown, a front side opening 3-2-1 is provided on the circumferential front side of the mounting bracket 3-2, a rear side opening 3-2-2 is provided on the circumferential rear side of the mounting bracket 3-2, a left side opening 3-2-3 is provided on the circumferential left side of the mounting bracket 3-2, and a right side opening 3-2-4 is provided on the circumferential right side of the mounting bracket 3-2. The pressure ring 4 is installed on the inner side surface of the base 3, and the installation position of the pressure ring 4 is lower than that of the left side opening 3-2-3 and the right side opening 3-2-4.

[0039] The structure of the base 3 of the present invention is reasonably designed. The flame detector 6 is directly installed in the workpiece positioning pin 7 on the base bottom plate 3-3 through the front side opening 3-2-1.

[0040] The pressure ring 4 can be pressed down through the rear side opening 3-2-2 to press the flame detector 6 tightly. And due to the provision of the left side opening 3-2-3 and the right side opening 3-2-4, it is convenient to install or remove the hexagon socket head screw 9, thereby fixing or removing the pressure ring 4.

[0041] Embodiment 3

[0042] Preferably, as Figures 1-2 shown, positioning holes 3-2-5 are provided at corresponding positions on both sides of the pressure ring 4 and the mounting bracket 3-2. The damping hinge 8 is installed in the positioning holes 3-2-5. The pressure ring 4 and the mounting bracket 3-2 are connected through the damping hinge 8. Fixing holes 3-2-6 are provided at the lower edges of both the left side opening 3-2-3 and the right side opening 3-2-4. The fixing holes 3-2-6 communicate with the positioning holes 3-2-5. The hexagon socket head screw 9 passes through the fixing holes 3-2-6 to fix the damping hinge 8.

[0043] Preferably, as Figure 2 shown, a limit hole 3-2-7 is provided on the mounting bracket 3-2 below the rear side opening 3-2-2. The ball screw 10 passes through the limit hole 3-2-7 to press the rear side of the pressure ring 4 tightly.

[0044] The ball screw 10 is installed on the rear side surface of the base 3. By tightening the ball screw 10, the steel ball of the ball screw 10 presses the pressure ring 4 tightly, thereby fixing the flame detector 6.

[0045] The ball screw is a derivative product of the set screw, which consists of a spring, a steel ball, and a shell. The ball screw is often used in molds, fixtures, assembly and other work. It uses a spring with a certain pressure to push the ball to move, so that the locking parts can operate smoothly. The steel ball of the ball screw is installed and matched with the positioning groove and embedded in the positioning groove, so as to achieve the purpose of positioning and resetting.

[0046] Example 4

[0047] Preferably, Figure 2 As shown, a clamp locating pin threaded hole is provided on one side of the upper flange 3-1, and the clamp locating pin 2 is threadedly installed in the clamp locating pin threaded hole. The clamp locating pin threaded hole and the front opening 3-2-1 are provided on the same side of the base 3. When clamping, the three-jaw chuck 1 connected to the robot clamps the outer circle of the upper flange 3-1, and one jaw of the three-jaw chuck 1 corresponds to the position of the clamp locating pin 2.

[0048] The fixture locating pin 2 is limited by a clamping claw of the three-jaw chuck 1 to locate the installation position of the clamping device.

[0049] Example 5

[0050] Preferably, Figure 1 As shown, the base bottom plate 3 - 3 is U-shaped, and a workpiece locating pin threaded hole is provided on the base bottom plate 3 - 3 , and the workpiece locating pin 7 is threadedly installed in the workpiece locating pin threaded hole.

[0051] Preferably, Figure 1 As shown, one end of the workpiece locating pin 7 is a threaded structure, and the other end of the workpiece locating pin 7 is a cylindrical pin structure. The threaded structure is installed in the threaded hole of the workpiece locating pin. The limiting cylindrical pin is sleeved in the mounting holes on both sides of the flame detector 6, and is used to limit the horizontal direction of the flame detector 6. The workpiece locating pin 7 is made of polytetrafluoroethylene material to avoid damage to the flame detector 6.

[0052] Example 6

[0053] Preferably, Figure 1 As shown, the pressure ring 4 is a C-shaped structure, and three column head ball positioning screws 5 are installed at equal intervals along the vertical direction at the bottom of the pressure ring 4. The pin heads of the column head ball positioning screws 5 are made of plastic POM material to avoid damage to the flame detector when pressed.

[0054] Example 7

[0055] Preferably, a clamping method for a rapid positioning and clamping device for a flame detector for laser shock peening as described in any one of the above items comprises the following steps:

[0056] Step 1: Fix the fixture positioning pin 2 to the upper side of the base 3 by threading, and use the three-jaw chuck 1 connected to the robot to grip the upper side of the base 3, so that one jaw of the three-jaw chuck 1 corresponds to the position of the fixture positioning pin 2, for quickly positioning the installation position of the clamping device;

[0057] Step 2: Install the workpiece positioning pin 7 on the inner bottom surface of the base 3;

[0058] Step 3: Install the pressure ring 4 on the inner side surface of the base 3;

[0059] Step 4: Then install the flame detector 6 inside the base 3, and fix the horizontal position of the flame detector 6 through two workpiece positioning pins 7;

[0060] Step 5: Press down the pressure ring 4, and press the flame detector 6 tightly through the stud bead positioning screw 5 at the bottom of the pressure ring 4, and then fix and press the pressure ring 4 tightly, so as to fix the vertical position of the flame detector 6.

[0061] The working principle of the present invention is as follows:

[0062] The present invention discloses a quick positioning and clamping device for a flame detector used in laser shock peening, including an installation positioning structure and a pressing component. The installation positioning structure includes a fixture positioning pin 2, a base 3, and a workpiece positioning pin 7. The three-jaw chuck 1 grips the outer circle of the upper flange 3-1 of the base 3, and the fixture positioning pin 2 is installed on one side of the upper flange 3-1 by threading. During installation, the fixture positioning pin 2 is limited by one jaw of the three-jaw chuck 1 to quickly position the installation position of the clamping device, and the workpiece positioning pin 7 is installed in the workpiece positioning pin threaded hole on the bottom surface of the base 3 by threading; the pressing component includes a pressure ring 4, a stud bead positioning screw 5, a bead screw 10, and a damping hinge 8. The stud bead positioning screw 5 is installed at the bottom of the pressure ring 4, the bead screw 10 is installed on the rear side surface of the base 3, the pressure ring 4 is connected to the inner wall of the base 3 through the damping hinge 8, and is pressed and fixed to the base 3 with an internal hexagon screw 9; the flame detector 6 is installed inside the base 3, and the horizontal position is fixed through two workpiece positioning pins 7. Press down the pressure ring 4, and press the flame detector 6 tightly through the three stud bead positioning screws 5 on the pressure ring 4, and tighten the bead screw 10 on the rear side surface of the pressure ring 4 to press the pressure ring 4 tightly, so as to fix the flame detector 6. The present invention uses the fixture positioning pin 2 to quickly position the installation position of the clamping device, the workpiece positioning pin 7 to fix the horizontal position of the flame detector 6, and the pressure ring 4 to fix the vertical position of the flame detector 6. The structure of the present invention is designed reasonably and reliably, with accurate positioning, simple and convenient operation, strong applicability, and stable clamping of the workpiece, avoiding the problems of cumbersome positioning, large workload, and long time consumption when replacing workpieces, improving work efficiency, saving time and labor costs, etc., and it is applicable to laser shock peening processing of various frequencies.

[0063] The present invention discloses a quick positioning and clamping device for a flame detector used in laser shock peening. A fixture positioning pin is installed on the upper flange on the upper side of the base. When clamping, the three-jaw chuck connected to the robot clamps the outer circle of the upper flange, and one jaw of the three-jaw chuck corresponds to the position of the fixture positioning pin, so as to realize the positioning of the installation position. The workpiece positioning pin is installed on the inner bottom surface of the base. The flame detector is placed on the workpiece positioning pin and is limited in the horizontal direction by the workpiece positioning pin. Press down the pressure ring, and the flame detector is fixed by the pressure ring. The flame detector is limited in the vertical direction by pressing the stud ball positioning screw of the pressure ring, so as to realize the quick positioning and clamping of the flame detector. The installation process is simple, the positioning is simple and accurate, and there is no need to reposition and adjust every time the flame detector is installed.

[0064] In the present invention, the base and the pressure ring are connected by a damping hinge to fix both sides of the pressure ring. A ball screw is installed on the rear side surface of the base to press the rear side of the pressure ring, so as to limit the flame detector in the vertical direction and realize the stability of clamping the flame detector.

[0065] In the present invention, the pin head of the stud ball positioning screw for pressing the flame detector is made of plastic POM material to avoid damaging the flame detector when pressing; the workpiece positioning pin is made of polytetrafluoroethylene material to protect the flame detector from being damaged.

[0066] The structure of the present invention is reasonable, the operation is simple, and it is convenient to promote and use, realizing the quickness and convenience, positioning accuracy, and clamping stability when replacing the flame detector.

[0067] The above has made a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the gist of the present invention.

[0068] Many other changes and modifications can be made without departing from the concept and scope of the present invention. It should be understood that the present invention is not limited to specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A rapid positioning and clamping device for a flame detector used in laser shock peening, characterized in that: It includes a fixture positioning pin (2), a base (3), a pressure ring (4), a stud ball positioning screw (5), a flame detector (6) and a workpiece positioning pin (7). The fixture positioning pin (2) is installed on the upper side of the base (3), and the workpiece positioning pin (7) is installed on the inner bottom surface of the base (3). The flame detector (6) is installed on the inner bottom surface of the base (3) and is horizontally limited by the workpiece positioning pin (7). The pressure ring (4) is installed on the inner side surface of the base (3), and a stud ball positioning screw (5) is installed at the bottom of the pressure ring (4). A ball screw (10) is installed on the rear side surface of the base (3) to tightly press the rear side of the pressure ring (4). When the pressure ring (4) is pressed down, the stud ball positioning screw (5) vertically limits the flame detector (6).

2. The quick positioning and clamping device for a flame detector used in laser shock peening according to claim 1, wherein: The base (3) includes an upper flange (3-1), a mounting bracket (3-2) and a base bottom plate (3-3). The upper flange (3-1) is fixed to the upper end surface of the mounting bracket (3-2), and the base bottom plate (3-3) is fixed to the lower end surface of the mounting bracket (3-2). The fixture positioning pin (2) is installed on one side of the upper flange (3-1), and the workpiece positioning pin (7) is installed on the upper end surface of the base bottom plate (3-3).

3. The rapid positioning and clamping device for a flame detector used in laser shock peening according to claim 2, characterized in that: The mounting bracket (3-2) is provided with a front side opening (3-2-1) on the circumferential front side, a rear side opening window (3-2-2) on the circumferential rear side, a left side opening window (3-2-3) on the circumferential left side, and a right side opening window (3-2-4) on the circumferential right side. The pressure ring (4) is installed on the inner side surface of the base (3), and the installation position of the pressure ring (4) is lower than that of the left side opening window (3-2-3) and the right side opening window (3-2-4).

4. A rapid positioning and clamping device for a flame detector used in laser shock peening according to claim 3, characterized in that: Positioning holes (3-2-5) are provided at corresponding positions on both sides of the pressure ring (4) and the mounting bracket (3-2). A damping hinge (8) is installed in the positioning holes (3-2-5). The pressure ring (4) and the mounting bracket (3-2) are connected through the damping hinge (8). Fixed holes (3-2-6) are provided at the lower edges of the left side opening window (3-2-3) and the right side opening window (3-2-4). The fixed holes (3-2-6) communicate with the positioning holes (3-2-5), and an internal hexagon screw (9) passes through the fixed holes (3-2-6) to fix the damping hinge (8).

5. The rapid positioning and clamping device for a flame detector used in laser shock peening according to claim 3, characterized in that: A fixture positioning pin threaded hole is provided on one side surface of the upper flange (3-1). The fixture positioning pin (2) is threadedly installed in the fixture positioning pin threaded hole. The fixture positioning pin threaded hole and the front side opening (3-2-1) are located on the same side of the base (3). When clamping, the three-jaw chuck (1) connected to the robot clamps the outer circle of the upper flange (3-1), and one jaw of the three-jaw chuck (1) corresponds to the position of the fixture positioning pin (2).

6. The quick positioning and clamping device for a flame detector used in laser shock peening according to claim 3, characterized in that: The base bottom plate (3-3) is U-shaped, and a workpiece positioning pin threaded hole is provided on the base bottom plate (3-3). The workpiece positioning pin (7) is threadedly installed in the workpiece positioning pin threaded hole.

7. A rapid positioning and clamping device for a flame detector used in laser shock peening according to claim 6, characterized in that: One end of the workpiece positioning pin (7) is a threaded structure, and the other end of the workpiece positioning pin (7) is a cylindrical pin structure. The threaded structure is installed in the threaded hole of the workpiece positioning pin, and the cylindrical pin structure is sleeved in the mounting hole of the flame detector (6) for horizontal direction limitation of the flame detector (6). The workpiece positioning pin (7) is made of polytetrafluoroethylene material.

8. The rapid positioning and clamping device for a flame detector used in laser shock peening according to claim 2, wherein: The pressing ring (4) is of a C-shaped structure. Three stud ball positioning screws (5) are installed at equal intervals along the vertical direction at the bottom of the pressing ring (4). The pin heads of the stud ball positioning screws (5) are made of plastic POM material.

9. A clamping method for a quick positioning and clamping device of a flame detector for laser shock peening according to any one of claims 1 to 8, characterized in that, It includes the following steps: Step 1: Fix the fixture positioning pin (2) on the upper side of the base (3) by threading. Use the three-jaw chuck (1) connected to the robot to clamp the upper side of the base (3), so that one jaw of the three-jaw chuck (1) corresponds to the position of the fixture positioning pin (2) for quickly positioning the installation position of the clamping device. Step 2: Install the workpiece positioning pin (7) on the inner bottom surface of the base (3). Step 3: Install the pressing ring (4) on the inner side surface of the base (3). Step 4: Then install the flame detector (6) inside the base (3), and fix the horizontal position of the flame detector (6) through two workpiece positioning pins (7). Step 5: Press down the pressing ring (4), press the flame detector (6) tightly through the stud ball positioning screws (5) at the bottom of the pressing ring (4), and then fix and press the pressing ring (4) tightly to fix the vertical position of the flame detector (6).

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