A stable clamping FCT test device and test method

Abstract

The present invention relates to the technical field of test fixtures, and discloses a stably clamped FCT test equipment, including a support mechanism, wherein the support mechanism includes a support frame, a first sliding groove is provided on the outer surface of the support frame, a support foot is fixedly connected to the outer wall of one end of the support frame close to the first sliding groove, a first hydraulic rod is fixedly connected to the inner wall of the support frame, an output end of the first hydraulic rod is fixedly connected to the first sliding frame, and a second hydraulic rod is fixedly connected to the inner wall of the first sliding frame, a second sliding groove is provided on the outer surface of the support frame, the outer wall of the support frame is fixedly connected to the first connecting frame, and the inner wall of the support frame on the side away from the second fixed axis is fixedly connected to the first fixed axis. During the FCT test of the circuit board, the adjustment mechanism ensures the stable movement of the first sliding frame, and the auxiliary component ensures that the clamping force of the support plates and the clamping plates on both sides is balanced, thereby avoiding local stress concentration on the circuit board causing device damage or poor contact.

Description

Technical Field

[0001] The present invention relates to the technical field of test fixtures, and in particular to a stable clamping FCT test device and a test method. Background Art

[0002] FCT testing equipment (Functional Circuit Test Equipment) is a professional testing tool used to verify the functional performance of electronic product circuit boards, primarily used for quality control in electronics manufacturing. By simulating actual operating environments, the equipment automatically tests key circuit board parameters such as voltage, current, signal waveforms, and communication protocols, accurately identifying defects such as poor component soldering, circuit shorts / opens, and software logic errors. Its core system, comprised of precision measuring instruments, programmable loads, test fixtures, and specialized analysis software, supports customized testing solutions to meet the testing needs of diverse products.

[0003] The patent application with application number CN202122878800.1 discloses an FCT test fixture with automatic clamping function, including an FCT test fixture body, the outer surface of the test disc is provided with a slide rail, and both sides of the inner wall of the FCT test fixture body are fixedly connected with a first cylinder and a second cylinder, and the output ends of the first cylinder and the second cylinder are fixedly connected with a first telescopic rod and a second telescopic rod, the top of the fixed block is fixedly connected with a support rod, and the top of the support rod is fixedly connected with an arc-shaped clamping plate.

[0004] In summary, when performing an FCT test on a circuit board, the first and second cylinders rely on the first and second telescopic rods to clamp the circuit board. This makes it difficult to ensure consistent clamping force between the curved clamping plates on both sides of the circuit board. This can cause excessive force on a part of the circuit board, resulting in component damage or poor contact.

[0005] To this end, we propose a stable clamping FCT testing device. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a stable clamping FCT testing device and a testing method to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a stably clamped FCT testing equipment, comprising a supporting mechanism, wherein the supporting mechanism includes a supporting frame, the outer surface of the supporting frame is provided with a first sliding groove, the outer wall of the supporting frame at one end close to the first sliding groove is fixedly connected to a supporting foot, the inner wall of the supporting frame is fixedly connected to a first hydraulic rod, the output end of the first hydraulic rod is fixedly connected to the first sliding frame, the inner wall of the first sliding frame is fixedly connected to the second hydraulic rod, the outer surface of the supporting frame is provided with a second sliding groove, the outer wall of the supporting frame is fixedly connected to the first connecting frame, the outer wall of the supporting frame on one side close to the first connecting frame is fixedly connected to the second fixed shaft, the inner wall of the supporting frame on the side away from the second fixed shaft is fixedly connected to the first fixed shaft, the outer wall of the first connecting frame is fixedly connected to the first motor, the output end of the first motor is fixedly connected to the rotating shaft, and the output end of the first motor is provided with a detection mechanism, characterized in that it also includes:

[0008] The adjusting mechanism includes a first rotating rod rotatably connected to the first sliding frame, and the end of the first rotating rod away from the first sliding frame is rotatably connected to the first sliding block through a rotating shaft, and the first sliding block is slidably connected inside the second sliding groove, and the outer wall of the first sliding block away from the first rotating rod is fixedly connected to the first spring, and the end of the first spring away from the first sliding block is fixedly connected to the support frame, and a clamping assembly is provided on the top of the first sliding block, and a third hydraulic rod is fixedly connected to the inner wall of the first sliding block, and the output end of the third hydraulic rod is fixedly connected to the first connecting block, and the output end of the third hydraulic rod is provided with an auxiliary assembly, and the first rotating rod slides in the second sliding groove through the first sliding block to limit the moving range of the first sliding frame and improve the stability of the first sliding frame.

[0009] According to the above technical solution, the inner wall of the first sliding block is rotatably connected to the second rotating rod via a rotating shaft, the end of the second rotating rod away from the first sliding block is rotatably connected to the second sliding block via a rotating shaft, the second sliding block is movably sleeved on the outer surface of the first fixed shaft, the outer wall of the second sliding block is fixedly connected to the second spring, the end of the second spring away from the second sliding block is fixedly connected to the support frame, and the second sliding block makes the sliding distance of the two first sliding blocks the same through the second rotating rod.

[0010] According to the above technical solution, the auxiliary component includes a second sliding frame slidably connected to the first sliding groove, the inner wall of the second sliding frame is fixedly connected to the first connecting shaft, the outer surface of the second sliding frame close to the first connecting shaft is fixedly connected to the second connecting shaft, the first connecting block is movably sleeved on the outer surface of the second connecting shaft, and the first sliding groove is used to limit the sliding distance of the second sliding frame.

[0011] According to the above technical solution, the inner wall of the second sliding frame is rotatably connected to the third rotating rod via a rotating shaft, and the end of the third rotating rod away from the second sliding frame is rotatably connected to the third sliding block via a rotating shaft, and the third sliding block is movably sleeved on the outer surface of the second fixed shaft, and the top outer surface of the third sliding block is fixedly connected to the third spring, and the end of the third spring away from the third sliding block is fixedly connected to the support frame, and the third spring returns to the initial position after movement through elastic action.

[0012] According to the above technical solution, the clamping assembly includes a support plate fixedly connected to the output end of the second hydraulic rod, a first buffer pad is fixedly connected to the outer wall of the support plate away from the second hydraulic rod, and a third sliding groove is provided on the outer surface of the support plate. The support plate is used to support the circuit board.

[0013] According to the above technical solution, the inner wall of the third sliding groove is slidably connected to a clamping rod, the outer surface of the clamping rod is fixedly connected to a second buffer pad, the inner wall of the clamping rod is rotatably connected to an auxiliary rod via a rotating shaft, and the end of the auxiliary rod away from the clamping rod is rotatably connected to a second connecting block via a rotating shaft, the second connecting block is movably sleeved on the outer surface of the first connecting shaft, and the clamping rod contacts the circuit board through the second buffer pad to achieve synchronous clamping of both sides of the circuit board.

[0014] According to the above technical solution, the detection mechanism includes a third sliding frame slidably connected to the rotating shaft, the outer wall of the third sliding frame is fixedly connected to the second motor, the output end of the second motor passes through the third sliding frame and is fixedly connected to the rotating frame, the inner wall of the rotating frame is fixedly connected to the first telescopic rod, and the second motor drives the rotating frame to rotate at a horizontal angle.

[0015] According to the above technical solution, the output end of the first telescopic rod is fixedly connected to the second connecting frame, the inner wall of the second connecting frame is fixedly connected to the second telescopic rod, and the output end of the second telescopic rod is fixedly connected to the test pin. The second telescopic rod pushes the test pin to contact the test point of the circuit board to complete the electrical signal detection.

[0016] A stable clamping FCT testing method includes the following steps:

[0017] S1. When the FCT inspection operation needs to be performed on the circuit board to be inspected, the second hydraulic rod pushes the support plate to move to both ends of the circuit board according to the length of the circuit board to be inspected, and the first buffer pad on the outer wall of the support plate completes the end clamping;

[0018] S2: The third hydraulic rod pulls the second sliding frame, which in turn causes the second connecting block to push the clamping rod along the third sliding groove toward both sides of the circuit board through the auxiliary rod via the first connecting shaft. The clamping rod contacts the circuit board via the second buffer pad, thereby clamping both sides of the circuit board.

[0019] S3. When the circuit board is firmly clamped, the first motor adjusts the relative position of the third sliding frame and the test point of the circuit board through the rotating shaft, the second motor adjusts the horizontal angle of the rotating frame, and the second telescopic rod pushes the test needle to contact the test point to complete the electrical signal detection.

[0020] Compared with the prior art, the present invention provides a stable clamping FCT testing device and testing method, which has the following beneficial effects:

[0021] 1. The present invention provides a stable clamping FCT test device. During the FCT test of the circuit board, the adjustment mechanism ensures the stable movement of the first sliding frame, and the auxiliary components ensure that the clamping force of the support plates and the clamping plates on both sides is balanced, thereby avoiding local stress concentration on the circuit board causing damage to the device or poor contact.

[0022] 2. The present invention provides an adjustment mechanism. When the circuit board is clamped and fixed, the first hydraulic rod pulls the first sliding frame to move toward the support frame, and the second hydraulic rod synchronously pushes the clamping assembly to adapt to the clamping requirements of circuit boards of different sizes.

[0023] 3. The present invention sets a clamping assembly. The second hydraulic rod pushes the support plate to both ends according to the length of the circuit board to be tested, and the end clamping is achieved through the first buffer pad on the outer wall. The third hydraulic rod pulls the second sliding frame, pulls the second connecting block through the first connecting shaft, and drives the clamping rod to move to both sides along the third sliding groove through the auxiliary rod. Finally, the second buffer pad contacts the circuit board to complete the lateral clamping.

[0024] 4. The present invention sets up a detection mechanism. After the circuit board is clamped and fixed, the first motor drives the rotating shaft to adjust the position of the third sliding frame and the test point. The second motor synchronously adjusts the horizontal angle of the rotating frame. Finally, the second telescopic rod pushes the test needle to contact the test point to complete the electrical signal detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the support mechanism and detection mechanism of the present invention;

[0027] Figure 3 Schematic diagram of the adjustment mechanism structure of the present invention Figure 1 ;

[0028] Figure 4It is a schematic structural diagram of the adjustment mechanism and auxiliary components of the present invention;

[0029] Figure 5 Schematic diagram of the adjustment mechanism structure of the present invention Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the auxiliary component structure of the present invention;

[0031] Figure 7 It is a schematic structural diagram of the clamping assembly of the present invention;

[0032] Figure 8 For the present invention Figure 3 Schematic diagram of the enlarged structure of A in the middle.

[0033] In the figure: 1. Support mechanism; 101. Support frame; 102. First sliding groove; 103. Support foot; 104. First fixed shaft; 105. Second fixed shaft; 106. First hydraulic rod; 107. First sliding frame; 108. Second hydraulic rod; 109. Second sliding groove; 110. First connecting frame; 111. First motor; 112. Rotating shaft; 2. Adjusting mechanism; 201. First rotating rod; 202. First sliding block; 203. First spring; 204. Second rotating rod; 205. Second sliding block; 206. Second spring; 207. Third hydraulic rod; 208. First connecting block; 209. Auxiliary component; 2091. Second sliding frame; 2092. First connecting shaft; 2093. Second connecting shaft; 2094. Third rotating rod; 2095. Third sliding block; 2096. Third spring; 210. Clamping assembly; 2101. Support plate; 2102. First buffer pad; 2103. Third sliding groove; 2104. Clamping rod; 2105. Second buffer pad; 2106. Auxiliary rod; 2107. Second connecting block; 3. Detection mechanism; 301. Third sliding frame; 302. Second motor; 303. Rotating frame; 304. First telescopic rod; 305. Second connecting frame; 306. Second telescopic rod; 307. Test pin. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments.

[0035] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0036] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] Example 1: See Figure 1-Figure 3 The present invention provides a technical solution: a stable clamping FCT test device, including a support mechanism 1, the support mechanism 1 includes a support frame 101, the outer surface of the support frame 101 is provided with a first sliding groove 102, the outer wall of the support frame 101 close to the first sliding groove 102 is fixedly connected to a support foot 103, the inner wall of the support frame 101 is fixedly connected to a first hydraulic rod 106, the output end of the first hydraulic rod 106 is fixedly connected to a first sliding frame 107, the inner wall of the first sliding frame 107 is fixedly connected to a second hydraulic rod 108, the support frame 10 1 is provided with a second sliding groove 109, an outer wall of the support frame 101 is fixedly connected to a first connecting frame 110, an outer wall of the support frame 101 on a side close to the first connecting frame 110 is fixedly connected to a second fixed shaft 105, an inner wall of the support frame 101 on a side away from the second fixed shaft 105 is fixedly connected to a first fixed shaft 104, an outer wall of the first connecting frame 110 is fixedly connected to a first motor 111, an output end of the first motor 111 is fixedly connected to a rotating shaft 112, and a detection mechanism 3 is provided at the output end of the first motor 111, and further includes:

[0038] The adjusting mechanism 2 includes a first rotating rod 201 rotatably connected to the first sliding frame 107, an end of the first rotating rod 201 away from the first sliding frame 107 is rotatably connected to the first sliding block 202 through a rotating shaft, the first sliding block 202 is slidably connected inside the second sliding groove 109, the outer wall of the first sliding block 202 away from the first rotating rod 201 is fixedly connected to a first spring 203, the end of the first spring 203 away from the first sliding block 202 is fixedly connected to the support frame 101, a clamping assembly 210 is provided on the top of the first sliding block 202, a third hydraulic rod 207 is fixedly connected to the inner wall of the first sliding block 202, the output end of the third hydraulic rod 207 is fixedly connected to the first connecting block 208, the output end of the third hydraulic rod 207 is provided with an auxiliary assembly 209, the first rotating rod 201 is connected to the first sliding block 20 The first sliding frame 107 slides in the second sliding groove 109, limiting the movement range of the first sliding frame 107 and improving the stability of the first sliding frame 107. When clamping and fixing the circuit board, the first hydraulic rod 106 is activated to pull the first sliding frame 107 toward the support frame 101. At the same time, the second hydraulic rod 108 is used to push the clamping assembly 210 to meet the clamping requirements of circuit boards of different sizes. During the movement of the first sliding frame 107 toward the support frame 101, the first sliding frame 107 will drive the first sliding block 202 to slide on the inner wall of the second sliding groove 109 through the first rotating rod 201, and then drive the third hydraulic rod 207 to slide the same distance through the first sliding block 202. The third hydraulic rod 207 can ensure that the clamping assembly 210 is in the center position by adjusting the auxiliary assembly 209, and clamp the circuit board with the same force.

[0039] The inner wall of the first sliding block 202 is rotatably connected to the second rotating rod 204 through a rotating shaft, and the end of the second rotating rod 204 away from the first sliding block 202 is rotatably connected to the second sliding block 205 through a rotating shaft, and the second sliding block 205 is movably sleeved on the outer surface of the first fixed shaft 104, and the outer wall of the second sliding block 205 is fixedly connected to the second spring 206, and the end of the second spring 206 away from the second sliding block 205 is fixedly connected to the support frame 101. When the second sliding block 205 slides along the second sliding groove 109 under the push of the first rotating rod 201, the second sliding block 205 causes the second rotating rod 204 to pull the second sliding block 205 to slide along the outer surface of the first fixed shaft 104 through the rotating shaft, and stretches the second spring 206. The second sliding block 205 makes the sliding distance of the two first sliding blocks 202 the same through the second rotating rod 204.

[0040] The detection mechanism 3 includes a third sliding frame 301 that is slidably connected to the rotating shaft 112, the outer wall of the third sliding frame 301 is fixedly connected to the second motor 302, the output end of the second motor 302 passes through the third sliding frame 301 and is fixedly connected to the rotating frame 303, the inner wall of the rotating frame 303 is fixedly connected to the first telescopic rod 304, the output end of the first telescopic rod 304 is fixedly connected to the second connecting frame 305, the inner wall of the second connecting frame 305 is fixedly connected to the second telescopic rod 306, and the output end of the second telescopic rod 306 is fixedly connected to the test pin 307. After the circuit board is clamped and fixed, the first motor 111 drives the rotating shaft 112 to adjust the relative position of the third sliding frame 301 and the test point, and the second motor 302 synchronously adjusts the horizontal angle of the rotating frame 303. Finally, the second telescopic rod 306 pushes the test pin 307 to contact the test point to complete the electrical signal detection.

[0041] Example 2: Please refer to Figure 4-Figure 8 On the basis of the first embodiment, the present invention provides a technical solution: the auxiliary component 209 includes a second sliding frame 2091 slidably connected to the first sliding groove 102, the inner wall of the second sliding frame 2091 is fixedly connected to the first connecting shaft 2092, the outer surface of the second sliding frame 2091 close to the first connecting shaft 2092 is fixedly connected to the second connecting shaft 2093, the first connecting block 208 is movably sleeved on the outer surface of the second connecting shaft 2093, the first sliding groove 102 is used to limit the sliding distance of the second sliding frame 2091, the inner wall of the second sliding frame 2091 is rotatably connected to the third rotating rod 2094 through a rotating shaft, the end of the third rotating rod 2094 away from the second sliding frame 2091 is rotatably connected to the third sliding block 2095 through a rotating shaft, and the third sliding block 209 The third sliding block 2095 is movably sleeved on the outer surface of the second fixed shaft 105. A third spring 2096 is fixedly connected to the outer surface of the top of the third sliding block 2095. The end of the third spring 2096 away from the third sliding block 2095 is fixedly connected to the support frame 101. The third spring 2096 elastically resets the third sliding block 2095 to its initial position after movement. When the third hydraulic rod 207 pulls the second sliding frame 2091 to slide along the first sliding groove 102, the second sliding frame 2091 drives the third sliding block 2095 to slide along the outer surface of the second fixed shaft 105 via the third rotating rod 2094, synchronously stretching the third spring 2096. At the same time, the third sliding block 2095 ensures that the sliding distance of the two second sliding frames 2091 remains consistent via the third rotating rod 2094.

[0042] The clamping assembly 210 includes a support plate 2101 fixedly connected to the output end of the second hydraulic rod 108, the outer wall of the support plate 2101 away from the second hydraulic rod 108 is fixedly connected to the first buffer pad 2102, the outer surface of the support plate 2101 is provided with a third sliding groove 2103, the support plate 2101 is used to support the circuit board, the inner wall of the third sliding groove 2103 is slidably connected to the clamping rod 2104, the outer surface of the clamping rod 2104 is fixedly connected to the second buffer pad 2105, the inner wall of the clamping rod 2104 is rotatably connected to the auxiliary rod 2106 through a rotating shaft, and the end of the auxiliary rod 2106 away from the clamping rod 2104 is rotatably connected to the second connecting block 2107 through a rotating shaft. The second connecting block 2107 is movably sleeved on the outer surface of the first connecting shaft 2092, and the clamping rod 2104 contacts the circuit board through the second buffer pad 2105 to achieve synchronous clamping of both sides of the circuit board. The second hydraulic rod 108 pushes the support plate 2101 to its two ends according to the length of the circuit board to be detected, and realizes end clamping through the first buffer pad 2102 on the outer wall of the support plate 2101. The third hydraulic rod 207 pulls the second sliding frame 2091, and links the second connecting block 2107 through the first connecting shaft 2092, and drives the clamping rod 2104 to move along the third sliding groove 2103 to both sides of the circuit board through the auxiliary rod 2106, and finally the second buffer pad 2105 contacts the circuit board to achieve lateral clamping.

[0043] A stable clamping FCT testing method includes the following steps:

[0044] S1. When the FCT inspection operation needs to be performed on the circuit board to be inspected, the second hydraulic rod 108 pushes the support plate 2101 to move to the two ends of the circuit board according to the length of the circuit board to be inspected, and the first buffer pad 2102 on the outer wall of the support plate 2101 completes the end clamping;

[0045] S2: The third hydraulic rod 207 pulls the second sliding frame 2091, which in turn causes the second connecting block 2107 to push the clamping rod 2104 along the third sliding groove 2103 toward both sides of the circuit board through the auxiliary rod 2106 via the first connecting shaft 2092. The clamping rod 2104 contacts the circuit board through the second buffer pad 2105, thereby clamping both sides of the circuit board.

[0046] S3. When the circuit board is firmly clamped, the first motor 111 adjusts the relative position of the third sliding frame 301 and the test point of the circuit board through the rotating shaft 112, the second motor 302 adjusts the horizontal angle of the rotating frame 303, and the second telescopic rod 306 pushes the test needle 307 to contact the test point to complete the electrical signal detection.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A stable clamping FCT test device, comprising a support mechanism (1), wherein the support mechanism (1) comprises a support frame (101), wherein the outer surface of the support frame (101) is provided with a first sliding groove (102), wherein the outer wall of one end of the support frame (101) close to the first sliding groove (102) is fixedly connected to a support foot (103), wherein the inner wall of the support frame (101) is fixedly connected to a first hydraulic rod (106), wherein the output end of the first hydraulic rod (106) is fixedly connected to a first sliding frame (107), wherein the inner wall of the first sliding frame (107) is fixedly connected to a second hydraulic rod (108), wherein the outer surface of the support frame (101) is provided with a first sliding groove (102 ... surface of the support frame (101) is provided with a first sliding groove (102), wherein the outer surface of the support frame (101) is provided with a first sliding groove (102), wherein the outer surface of the support frame (101) is provided with a first sliding groove (102), wherein the outer surface of the support frame (101) is provided with a first sliding groove (102), wherein the outer surface of the support frame (101) is provided with a first sliding groove (102), wherein the outer surface of the support frame (101) is provided with a first sliding groove A second sliding groove (109) is provided on the surface, the outer wall of the support frame (101) is fixedly connected to the first connecting frame (110), the outer wall of the support frame (101) close to the first connecting frame (110) is fixedly connected to the second fixed shaft (105), the inner wall of the support frame (101) away from the second fixed shaft (105) is fixedly connected to the first fixed shaft (104), the outer wall of the first connecting frame (110) is fixedly connected to the first motor (111), the output end of the first motor (111) is fixedly connected to the rotating shaft (112), and the output end of the first motor (111) is provided with a detection mechanism (3), characterized in that, Also included are: The adjusting mechanism (2) comprises a first rotating rod (201) rotatably connected to the first sliding frame (107), an end of the first rotating rod (201) away from the first sliding frame (107) is rotatably connected to a first sliding block (202) via a rotating shaft, the first sliding block (202) is slidably connected inside a second sliding groove (109), a first spring (203) is fixedly connected to an outer wall of a side of the first sliding block (202) away from the first rotating rod (201), and an end of the first spring (203) away from the first sliding block (202) is fixed to the support frame (101). The first sliding block (202) is connected to the second sliding groove (109), the first sliding block (202) is provided with a clamping assembly (210), the inner wall of the first sliding block (202) is fixedly connected to the third hydraulic rod (207), the output end of the third hydraulic rod (207) is fixedly connected to the first connecting block (208), the output end of the third hydraulic rod (207) is provided with an auxiliary assembly (209), the first rotating rod (201) slides in the second sliding groove (109) through the first sliding block (202), thereby limiting the moving range of the first sliding frame (107) and improving the stability of the first sliding frame (107); The inner wall of the first sliding block (202) is rotatably connected to a second rotating rod (204) via a rotating shaft, and one end of the second rotating rod (204) away from the first sliding block (202) is rotatably connected to a second sliding block (205) via a rotating shaft, and the second sliding block (205) is movably sleeved on the outer surface of the first fixed shaft (104), and the outer wall of the second sliding block (205) is fixedly connected to a second spring (206), and one end of the second spring (206) away from the second sliding block (205) is fixedly connected to the support frame (101), and the second sliding block (205) makes the sliding distances of the two first sliding blocks (202) the same through the second rotating rod (204); The auxiliary component (209) includes a second sliding frame (2091) slidably connected to the first sliding groove (102), the inner wall of the second sliding frame (2091) is fixedly connected to the first connecting shaft (2092), the outer surface of the second sliding frame (2091) on one side close to the first connecting shaft (2092) is fixedly connected to the second connecting shaft (2093), the first connecting block (208) is movably sleeved on the outer surface of the second connecting shaft (2093), and the first sliding groove (102) is used to limit the sliding distance of the second sliding frame (2091); The inner wall of the second sliding frame (2091) is rotatably connected to a third rotating rod (2094) via a rotating shaft, and one end of the third rotating rod (2094) away from the second sliding frame (2091) is rotatably connected to a third sliding block (2095) via a rotating shaft, and the third sliding block (2095) is movably sleeved on the outer surface of the second fixed shaft (105), and the top outer surface of the third sliding block (2095) is fixedly connected to a third spring (2096), and one end of the third spring (2096) away from the third sliding block (2095) is fixedly connected to the support frame (101), and the third spring (2096) causes the third sliding block (2095) to return to its initial position after moving through elastic action; The clamping assembly (210) comprises a support plate (2101) fixedly connected to the output end of the second hydraulic rod (108); a first buffer pad (2102) is fixedly connected to the outer wall of the support plate (2101) away from the second hydraulic rod (108); a third sliding groove (2103) is provided on the outer surface of the support plate (2101); and the support plate (2101) is used to support the circuit board; The inner wall of the third sliding groove (2103) is slidably connected to a clamping rod (2104), the outer surface of the clamping rod (2104) is fixedly connected to a second buffer pad (2105), the inner wall of the clamping rod (2104) is rotatably connected to an auxiliary rod (2106) via a rotating shaft, and the end of the auxiliary rod (2106) away from the clamping rod (2104) is rotatably connected to a second connecting block (2107) via a rotating shaft, and the second connecting block (2107) is movably sleeved on the outer surface of the first connecting shaft (2092), and the clamping rod (2104) contacts the circuit board through the second buffer pad (2105), thereby realizing synchronous clamping of both sides of the circuit board.

2. The stable clamping FCT testing device according to claim 1, characterized in that: The detection mechanism (3) comprises a third sliding frame (301) slidably connected to the rotating shaft (112); a second motor (302) is fixedly connected to the outer wall of the third sliding frame (301); an output end of the second motor (302) passes through the third sliding frame (301) and is fixedly connected to the rotating frame (303); a first telescopic rod (304) is fixedly connected to the inner wall of the rotating frame (303); and the second motor (302) drives the rotating frame (303) to rotate at a horizontal angle.

3. The stable clamping FCT testing device according to claim 2, characterized in that: The output end of the first telescopic rod (304) is fixedly connected to a second connecting frame (305), the inner wall of the second connecting frame (305) is fixedly connected to a second telescopic rod (306), the output end of the second telescopic rod (306) is fixedly connected to a test pin (307), and the second telescopic rod (306) pushes the test pin (307) to contact a test point on a circuit board, thereby completing electrical signal detection.

4. A method for testing a stably clamped FCT test device according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. When the FCT inspection operation needs to be performed on the circuit board to be inspected, the second hydraulic rod (108) pushes the support plate (2101) to move to both ends of the circuit board according to the length of the circuit board to be inspected, and completes the end clamping through the first buffer pad (2102) on the outer wall of the support plate (2101); S2, the third hydraulic rod (207) pulls the second sliding frame (2091), and the second sliding frame (2091) causes the second connecting block (2107) to push the clamping rod (2104) along the third sliding groove (2103) toward both sides of the circuit board through the auxiliary rod (2106) through the first connecting shaft (2092). The clamping rod (2104) contacts the circuit board through the second buffer pad (2105), thereby clamping both sides of the circuit board; S3. When the circuit board is firmly clamped, the first motor (111) adjusts the relative position of the third sliding frame (301) and the test point of the circuit board through the rotating shaft (112), the second motor (302) adjusts the horizontal angle of the rotating frame (303), and the second telescopic rod (306) pushes the test needle (307) to contact the test point to complete the electrical signal detection.

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