A high-precision multi-axis flying probe test circuit board equipment

Abstract

This utility model discloses a high-precision multi-axis flying probe testing device for circuit boards, relating to the field of circuit board flying probe testing technology. It includes a device bracket, with a guide rod fixedly installed on the inner side of the bracket. A support platform is slidably connected to the outer wall of the guide rod, and a limiting mechanism is fixedly connected to the top of the support platform. A detection mechanism is fixedly installed on the top of the device bracket. The threaded groove inside the piston rod of the electric cylinder is threadedly connected to the threaded tube at the top of the fastening block, which can fix the probe body inserted inside the electric cylinder. The limiting ring on the outer wall of the probe body fits against the inner wall of the fastening block to ensure stability. The presence of the fastening block significantly improves the stability of the probe and reduces the difficulty of replacing it. A motor is also installed on the top of the vertical plate, connected to the limiting frame via a lead screw, thereby enabling multi-axis movement of the detection mechanism. The electric cylinder can precisely control the downward pressing action of the probe body.

Description

Technical Field

[0001] This utility model relates to the field of circuit board flying probe testing technology, and in particular to a high-precision multi-axis flying probe testing equipment for circuit boards. Background Technology

[0002] Flying probe testing is an advanced circuit board (PCB) inspection technology that uses movable probes (flying probes) to perform electrical performance tests on components and circuits on the circuit board.

[0003] However, in the existing technology, traditional circuit board testing equipment, such as bed-of-nails testers, although they have certain advantages in mass production, have many limitations. They require the design and manufacture of special bed-of-nails fixtures for different circuit boards, which is not only costly and has a long production cycle, but also lacks flexibility and is difficult to adapt to the production needs of small batches and multiple varieties. They also have deficiencies in multi-axis linkage accuracy, probe stability and circuit board fixation reliability, resulting in low testing efficiency and large error in test results, making it difficult to meet the testing needs of modern high-precision circuit boards. Utility Model Content

[0004] The purpose of this invention is to solve the problems of high cost, poor flexibility, and insufficient detection accuracy of existing circuit board testing equipment, and to propose a high-precision multi-axis flying probe testing equipment for circuit boards.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision multi-axis flying probe testing circuit board device, comprising a device bracket, a guide rod fixedly installed on the inner side of the device bracket, a support platform slidably connected to the outer wall of the guide rod, a limit mechanism fixedly connected to the top of the support platform, and a detection mechanism fixedly installed on the top of the device bracket. The detection mechanism includes an electric cylinder, a probe body, and a fastening block. The probe body is inserted into the interior of the electric cylinder, the fastening block is sleeved on the outer wall of the probe body, and a threaded tube is fixedly installed on the top of the fastening block. A threaded groove is opened inside the piston rod of the electric cylinder, and the threaded tube is threadedly connected to the interior of the threaded groove.

[0006] Preferably, a limiting ring is fixedly installed on the outer wall of the probe body, and the limiting ring is attached to the inner wall of the fastening block.

[0007] Preferably, a limiting frame is movably connected to the outer wall of the electric cylinder, and a vertical plate is slidably connected to one side of the limiting frame. The vertical plate is fixedly installed on one side of the top of the equipment bracket.

[0008] Preferably, the limiting mechanism includes a support plate, a first servo motor, and a limiting block. The limiting block is fixedly installed on the lower surface of the support plate, the first servo motor is fixedly installed at the end of the support plate, and the limiting block is sleeved on the top of the support platform.

[0009] Preferably, a second servo motor is fixedly installed at one end of the support platform, and a lead screw is fixedly connected to both the output end of the second servo motor and the output end of the first servo motor.

[0010] Preferably, a fixed plate is fixedly installed at one end of the support plate, and a movable plate is slidably connected to the other end of the support plate.

[0011] Preferably, the movable plate and the fixed plate are arranged opposite to each other, and a slot is provided on one side of the movable plate and one side of the fixed plate.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the threaded groove inside the piston rod of the electric cylinder is threadedly connected to the threaded tube at the top of the fastening block, which can fix the probe body inserted inside the electric cylinder. The limiting ring on the outer wall of the probe body fits against the inner wall of the fastening block to ensure stability. The presence of the fastening block can greatly improve the stability of the probe and organically reduce the difficulty of replacing the probe. A motor is also installed at the top of the vertical plate and connected to the limiting frame through a lead screw, so as to realize the multi-axis movement of the detection mechanism. The electric cylinder can accurately control the downward pressing action of the probe body.

[0013] 2. In this utility model, the design of the first servo motor and the second servo motor in conjunction with the lead screw enables precise adjustment of the position of the movable plate, which can be adapted to circuit boards of different sizes, thus enhancing the versatility of the equipment. The sleeve structure between the limit block and the support platform ensures the stability of the support plate movement and avoids shaking that could affect the limiting effect. The slot design between the movable plate and the fixed plate can firmly hold the circuit board in place, preventing the circuit board from shifting during testing. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural diagram of a high-precision multi-axis flying probe test circuit board device; Figure 2 A side view of a high-precision multi-axis flying probe test circuit board device is provided for this utility model; Figure 3 This utility model presents a three-dimensional structural diagram of a limiting mechanism for a high-precision multi-axis flying probe testing circuit board device; Figure 4 This utility model presents a schematic diagram showing the disassembled structure of the electric cylinder and probe body of a high-precision multi-axis flying probe test circuit board device.

[0015] Legend: 1. Equipment bracket; 2. Guide rod; 3. Support platform; 4. Limiting mechanism; 5. Detection mechanism; 6. Second servo motor; 41. Support plate; 42. First servo motor; 43. Limiting block; 44. Movable plate; 45. Fixed plate; 51. Vertical plate; 52. Electric cylinder; 53. Limiting frame; 54. Probe body; 55. Limiting ring; 56. Fastening block; 57. Threaded tube; 58. Threaded groove. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a high-precision multi-axis flying probe testing circuit board device, including a device bracket 1. A guide rod 2 is fixedly installed on the inner side of the device bracket 1. A support platform 3 is slidably connected to the outer wall of the guide rod 2. A limit mechanism 4 is fixedly connected to the top of the support platform 3. A detection mechanism 5 is fixedly installed on the top of the device bracket 1. The detection mechanism 5 includes an electric cylinder 52, a probe body 54, and a fastening block 56. The probe body 54 is inserted into the inside of the electric cylinder 52. The fastening block 56 is sleeved on the outer wall of the probe body 54. A threaded tube 57 is fixedly installed on the top of the fastening block 56. A threaded groove 58 is opened inside the piston rod of the electric cylinder 52. The threaded tube 57 is threadedly connected to the inside of the threaded groove 58. A limit ring 55 is fixedly installed on the outer wall of the probe body 54. The limit ring 55 fits against the inner wall of the fastening block 56. A limit frame 53 is movably connected to the outer wall of the electric cylinder 52. A vertical plate 51 is slidably connected to one side of the limit frame 53. The vertical plate 51 is fixedly installed on one side of the top of the device bracket 1.

[0019] The specific settings and functions of this embodiment are described in detail below. The guide rod 2 on the inner side of the equipment bracket 1 allows the support platform 3 to slide along its outer wall. The limiting mechanism 4 on the top of the support platform 3 is used to fix the circuit board. In the detection mechanism 5 on the top of the equipment bracket 1, the threaded groove 58 in the piston rod of the electric cylinder 52 is threadedly connected to the threaded tube 57 on the top of the fastening block 56, which can fix the probe body 54 inserted inside the electric cylinder 52. The limiting ring 55 on the outer wall of the probe body 54 fits against the inner wall of the fastening block 56 to ensure stability. During operation, the electric cylinder 52 drives the probe body 54 to press down and contact the test point of the circuit board for detection. The guide rod 2 slides against the support platform 3. The structure facilitates the adjustment of the circuit board position. The limiting mechanism 4 can stably fix the circuit board. A motor is also installed on the top of the vertical plate 51, which is connected to the limiting frame 53 through a lead screw to achieve multi-axis movement of the detection mechanism 5. The electric cylinder 52 can precisely control the downward pressing action of the probe body 54. The connection between the threaded tube 57 and the threaded groove 58 and the cooperation between the limiting ring 55 and the fastening block 56 ensure that the probe body 54 is installed firmly, thereby realizing high-precision multi-axis flying probe testing of the circuit board. The structure is reasonably designed, with high and stable detection accuracy. Furthermore, the presence of the fastening block 56 can greatly improve the stability of the probe and organically reduce the difficulty of replacing the probe.

[0020] Example 2: Figure 1 , Figure 2 and Figure 3 As shown, the limiting mechanism 4 includes a support plate 41, a first servo motor 42, and a limiting block 43. The limiting block 43 is fixedly installed on the lower surface of the support plate 41, the first servo motor 42 is fixedly installed on the end of the support plate 41, the limiting block 43 is sleeved on the top of the support platform 3, a second servo motor 6 is fixedly installed on one end of the support platform 3, and a lead screw is fixedly connected to both the output end of the second servo motor 6 and the output end of the first servo motor 42. A fixed plate 45 is fixedly installed on one end of the support plate 41, and a movable plate 44 is slidably connected to the other end of the support plate 41. The movable plate 44 is arranged opposite to the fixed plate 45, and a slot is provided on one side of the movable plate 44 and one side of the fixed plate 45.

[0021] The overall effect of this embodiment is that after the second servo motor 6 at one end of the support platform 3 and the first servo motor 42 at the end of the support plate 41 are started, they respectively drive the lead screw connected to their respective output ends to rotate. The lead screw at the output end of the second servo motor 6 will push the limiting block 43 to move along the direction of the support platform 3. Since the movable plate 44 is slidably connected to the support plate 41, the rotation of the lead screw at the output end of the first servo motor 42 will cause the movable plate 44 to slide along the support plate 41, thereby adjusting the distance between the movable plate 44 and the fixed plate 45. The limiting block 43 is fixed to the lower surface of the support plate 41 and sleeved on the top of the support platform 3 to ensure that the support plate 41 moves stably on the support platform 3. The movable plate 44 and the fixed plate 45 are arranged opposite each other and both are opened on one side. The device features a slot. When placing a circuit board, the first servo motor 42 and the second servo motor 6 can be controlled to move the movable plate 44, securing the circuit board within the slot. The design of the first servo motor 42 and the second servo motor 6, along with the lead screw, allows for precise adjustment of the movable plate 44's position, adapting to circuit boards of different sizes and enhancing the device's versatility. The sleeve structure between the limiting block 43 and the support platform 3 ensures the stability of the support plate 41's movement, preventing wobbling from affecting the limiting effect. The slot design between the movable plate 44 and the fixed plate 45 firmly holds the circuit board, preventing displacement during testing and ensuring high-precision testing of the circuit board by the detection mechanism 5, thus improving the accuracy and reliability of the test results.

[0022] The usage and working principle of this device are as follows: First, place the circuit board in the limiting mechanism 4 on the support platform 3. Start the second servo motor 6, and its output screw pushes the limiting block 43, causing the support plate 41 to move along the support platform 3 to a suitable position. Then, start the first servo motor 42, and its output screw drives the movable plate 44 to slide along the support plate 41. The circuit board is firmly fixed by the slots on the movable plate 44 and the fixed plate 45. Next, control the motor at the top of the vertical plate 51 to drive the screw to rotate, causing the limiting frame 53 to slide along the vertical plate 51. At the same time, the guide rod 2 and the support platform 3... The sliding structure adjusts the position of the circuit board, enabling multi-axis movement of the detection mechanism 5. The probe body 54 is precisely positioned above the test point on the circuit board. Subsequently, the electric cylinder 52 drives the probe body 54 to press down. Through the connection between the threaded tube 57 and the threaded groove 58, and the cooperation between the limiting ring 55 and the fastening block 56, the probe body 54 is ensured to stably contact the test point for electrical performance testing. After the test is completed, the electric cylinder 52 drives the probe body 54 to rise and reset. The first servo motor 42 and the second servo motor 6 rotate in opposite directions, releasing the movable plate 44 and the fixed plate 45, and removing the circuit board.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-precision multi-axis flying probe testing device for circuit boards, comprising a device bracket (1), characterized in that: A guide rod (2) is fixedly installed on the inner side of the equipment bracket (1). A support platform (3) is slidably connected to the outer wall of the guide rod (2). A limit mechanism (4) is fixedly connected to the top of the support platform (3). A detection mechanism (5) is fixedly installed on the top of the equipment bracket (1). The detection mechanism (5) includes an electric cylinder (52), a probe body (54), and a fastening block (56). The probe body (54) is inserted into the inside of the electric cylinder (52). The fastening block (56) is sleeved on the outer wall of the probe body (54). A threaded tube (57) is fixedly installed on the top of the fastening block (56). A threaded groove (58) is opened inside the piston rod of the electric cylinder (52). The threaded tube (57) is threadedly connected to the inside of the threaded groove (58).

2. The high-precision multi-axis flying probe testing equipment for circuit boards according to claim 1, characterized in that: A limiting ring (55) is fixedly installed on the outer wall of the probe body (54), and the limiting ring (55) is attached to the inner wall of the fastening block (56).

3. The high-precision multi-axis flying probe testing circuit board equipment according to claim 2, characterized in that: A limiting frame (53) is movably connected to the outer wall of the electric cylinder (52), and a vertical plate (51) is slidably connected to one side of the limiting frame (53). The vertical plate (51) is fixedly installed on one side of the top of the equipment bracket (1).

4. The high-precision multi-axis flying probe testing equipment for circuit boards according to claim 1, characterized in that: The limiting mechanism (4) includes a support plate (41), a first servo motor (42) and a limiting block (43). The limiting block (43) is fixedly installed on the lower surface of the support plate (41), the first servo motor (42) is fixedly installed on the end of the support plate (41), and the limiting block (43) is sleeved on the top of the support platform (3).

5. The high-precision multi-axis flying probe testing equipment for circuit boards according to claim 4, characterized in that: A second servo motor (6) is fixedly installed at one end of the support platform (3), and a lead screw is fixedly connected to both the output end of the second servo motor (6) and the output end of the first servo motor (42).

6. The high-precision multi-axis flying probe testing equipment for circuit boards according to claim 5, characterized in that: A fixed plate (45) is fixedly installed at one end of the support plate (41), and a movable plate (44) is slidably connected to the other end of the support plate (41).

7. A high-precision multi-axis flying probe testing circuit board device according to claim 6, characterized in that: The movable plate (44) and the fixed plate (45) are arranged opposite to each other, and a slot is provided on one side of the movable plate (44) and one side of the fixed plate (45).

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