Rapid clamping tool for PIV (particle image velocimetry) test of semiconductor laser

Abstract

The utility model relates to a rapid clamping tool for PIV test of a semiconductor laser, which belongs to the technical field of semiconductor laser test and comprises a water cooling plate, a support, a transmission mechanism and an electric screwdriver, the support is mounted on the water cooling plate, the electric screwdriver is mounted at the upper end of the support, and the transmission mechanism is mounted at the lower end of the support; the transmission mechanism comprises an upper shell and a lower shell which are connected with each other, a pressing head is connected below the lower shell through a guide column, a connecting rod is arranged above the pressing head and is in threaded connection with the spindle, and the output end of the electric screwdriver is connected with the spindle. The electric screwdriver rotates to drive the main shaft to rotate, the connecting rod is driven to move up and down through the connecting rod in threaded connection, so that the pressing head is driven to move up and down, torsion of the electric screwdriver is converted into downward pressure through the transmission mechanism, and clamping is completed. The operation is simple, the process of screwing a screw is omitted, and the efficiency is improved. And the torsion precision is high, so that the pressure on the product is accurate. Torsion is adjustable, the water cooling plate is large in area, and then testing requirements of different semiconductor lasers are met.

Description

Technical Field

[0001] The utility model relates to a fast holding tool for semiconductor laser PIV testing, belonging to the technical field of semiconductor laser testing. Background Art

[0002] Semiconductor lasers are widely used in infrared lighting, laser ranging, laser medical treatment, and laser processing due to their advantages such as light weight, small size, long life, high efficiency, and high reliability. Semiconductor lasers undergo PIV testing and a test report before leaving the factory. During testing, the semiconductor laser is fixed to the water cooling plate using screws secured with a torque screwdriver. This requires a large number of screws, typically around 4-8, making the process cumbersome and inefficient.

[0003] In summary, the above technologies currently have the problem that the test is cumbersome to operate and inefficient, which leads to the present utility model. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the test is complicated to operate and inefficient. In view of the shortcomings of the existing technology, the present invention provides a torque-adjustable fixture for PIV testing of semiconductor lasers. The electric screwdriver with adjustable torque provides stable pressure to press the product, meeting the test requirements, and is easy to operate and efficient.

[0005] An electric screwdriver, also known as an electric screwdriver or electric screwdriver, is an electric tool used to tighten and loosen screws and nuts.

[0006] PIV is a test widely used in the performance evaluation of optoelectronic materials, chips, and devices, mainly including tests of optical power, spectrum, current, voltage, etc.

[0007] The technical solution of the utility model is as follows:

[0008] A rapid fixture for PIV testing of semiconductor lasers consists of a water-cooled plate, a bracket, a transmission mechanism, and an electric screwdriver. The bracket is mounted on the water-cooled plate, with the electric screwdriver mounted on the top and the transmission mechanism on the bottom. The water-cooled plate is made of 6061 aluminum alloy for its excellent thermal conductivity and corrosion resistance, primarily dissipating heat. The bracket primarily provides support, and the transmission mechanism converts the torque of the electric screwdriver into downward pressure, compressing the semiconductor laser. The electric screwdriver's torque is adjustable according to demand, and its built-in torque sensor facilitates torque setting and provides high torque accuracy. The large-area water-cooled plate in the burn-in chamber provides excellent heat dissipation and a large surface area, meeting the testing needs of semiconductor lasers of varying sizes.

[0009] The transmission mechanism consists of an interconnected upper and lower housings. A pressure head is connected to the lower housing via a guide column. A connecting rod is located above the pressure head. The connecting rod is threadedly connected to the main shaft, and the output end of the electric screwdriver is connected to the main shaft. The rotation of the electric screwdriver drives the main shaft to rotate, and the connecting rod, which is threaded, moves up and down, thereby driving the pressure head up and down. The transmission mechanism converts the torque of the electric screwdriver into downward pressure to complete the clamping.

[0010] Preferably, there are at least two guide posts to ensure that the pressure head does not have displacement deviation when moving up and down.

[0011] Further preferably, the number of the guide posts is four and they are evenly distributed around the connecting rod.

[0012] Preferably, a first step, a second step, a third step, and a second through hole are sequentially provided in the lower shell body, and the inner diameter decreases sequentially. A first threaded hole is provided around the first step on the upper surface of the lower shell body, and a blind hole is provided around the second through hole on the lower surface of the lower shell body, and the guide column is located in the blind hole; the main shaft is fixed in the upper shell body and the lower shell body through a tapered roller bearing and a second step, and the tapered roller bearing is installed in the cylindrical inner hole formed by the first step and the sixth step. The tapered roller bearing has good axial force, which can offset the reverse force when the main shaft rotates and drives the connecting rod to move downward, thereby protecting the electric screwdriver from axial force;

[0013] The vertical cross-section of the upper shell is T-shaped, and the upper shell is provided with a fourth step, a third through hole, and a sixth step in sequence. The inner diameter of the third through hole is smaller than the inner diameter of the fourth step. A first step hole is provided around the fourth step, and a second step hole is provided on the upper surface of the upper shell outside the first step hole. The upper shell is connected and fixed to the bracket through the second step hole, and the upper shell is fixedly connected to the lower shell through the first step hole and the first threaded hole.

[0014] Preferably, the spindle comprises an upper and lower body. The upper body is provided with a boss on the outside, a hexagonal countersunk hole at the top, and an external thread on the lower body. A hexagonal prism is fitted into the hexagonal countersunk hole, and the spindle is connected to the output terminal of the electric screwdriver via the hexagonal prism. The electric screwdriver is connected in sequence to the hexagonal prism, the spindle, the connecting rod, and the pressure head. Rotation of the electric screwdriver drives the hexagonal prism and the spindle to rotate. The spindle and the connecting rod are connected by threads, and the rotation of the spindle drives the connecting rod up and down.

[0015] Further preferably, the connecting rod has a T-shaped vertical cross-section, with a fifth step at the top that mates with the third step. A second threaded hole is provided in the center of the connecting rod, and the external threads of the spindle mate with the internal threads of the second threaded hole. After assembly, the fifth step is located within the third step of the lower housing. Because the inner diameter of the third step is larger than that of the second through-hole below, it restricts the connecting rod from further downward movement, acting as a limiter. Furthermore, by adjusting the height of the bracket, a distance of 10 mm can be maintained between the bottommost pressure head and the water-cooling plate, protecting the operator's safety.

[0016] Preferably, the bracket is provided with a limiting groove and a first through hole, the limiting groove is used to place and limit the position of the electric screwdriver, and the output end of the electric screwdriver extends downward through the first through hole. The electric screwdriver is connected to the hexagonal prism through the first through hole, the fourth step and the third through hole, and the hexagonal prism is connected to the main shaft.

[0017] The beneficial effects of the present invention are:

[0018] This fast-clamping fixture for semiconductor laser PIV testing converts the torque of the electric screwdriver into downward pressure through a transmission mechanism, compacting the semiconductor laser. This simple operation eliminates the need for screw tightening and improves efficiency. High torque accuracy ensures precise pressure on the product. Adjustable torque and a large cooling plate area meet the diverse testing requirements of semiconductor lasers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an example of the present utility model;

[0020] Figure 2 A schematic diagram of the transmission mechanism of the present utility model;

[0021] Figure 3 for Figure 2 Middle AA section;

[0022] Figure 4 A schematic diagram of the bracket of the present invention;

[0023] Figure 5 A schematic diagram of the main shaft of the utility model;

[0024] Figure 6 It is a schematic diagram of the lower shell of the utility model;

[0025] Figure 7 Schematic diagram of the upper shell of the utility model;

[0026] Figure 8 Schematic diagram of the connecting rod of the present invention;

[0027] Figure 9 A schematic diagram of an electric screwdriver according to the present invention;

[0028] Including: 1 water cooling plate, 2 brackets, 3 transmission mechanism, 4 electric screwdriver;

[0029] 201 limiting groove, 202 first through hole;

[0030] 301 upper shell, 302 lower shell, 303 guide column, 304 pressure head, 305 connecting rod, 306 main shaft, 307 tapered roller bearing, 308 hexagonal prism;

[0031] 3011 fourth step, 3012 third through hole, 3013 first step hole, 3014 second step hole, 3015 sixth step,

[0032] 3021 first step, 3022 second step, 3023 third step, 3024 blind hole, 3025 second through hole, 3026 first threaded hole;

[0033] 3051 fifth step, 3052 second threaded hole;

[0034] 3061 external thread, 3062 boss, 3063 hexagonal countersunk hole. DETAILED DESCRIPTION

[0035] The present invention will be further described below through embodiments and in conjunction with the accompanying drawings, but is not limited thereto.

[0036] Example 1:

[0037] A fast fixture for PIV testing of semiconductor lasers, comprising a water-cooling plate 1, a bracket 2, a transmission mechanism 3, and an electric screwdriver 4. The water-cooling plate is provided with a bracket, an electric screwdriver is provided at the upper end of the bracket, and a transmission mechanism is provided at the lower end. Figure 1 As shown in the figure, the water cooling plate is made of 6061 aluminum alloy with good thermal conductivity and corrosion resistance, mainly for heat dissipation, the bracket mainly plays a supporting role, and the transmission mechanism is used to convert the torque of the electric screwdriver into downward pressure to press the semiconductor laser. The torque of the electric screwdriver is adjusted according to demand, and it has a built-in torque sensor, which makes the torque setting easy and the torque accuracy high. Figure 9 As shown in the figure, the large-area water-cooling plate in the aging room has good heat dissipation effect and a large area, which can meet the testing needs of semiconductor lasers of different sizes.

[0038] The transmission mechanism 3 includes an upper shell 301 and a lower shell 302 connected to each other. Figure 2 、 Figure 3 As shown, a pressure head 304 is connected to the lower housing 302 via a guide post 303. A connecting rod 305 is located above the pressure head 304. This connecting rod 305 is threadedly connected to a spindle 306, to which the output end of the electric screwdriver is connected. The rotation of the electric screwdriver drives the spindle, which in turn moves up and down via the threaded connecting rod, thereby driving the pressure head up and down. The transmission mechanism converts the torque of the electric screwdriver into downward pressure, achieving clamping. There are four guide posts, evenly distributed around the connecting rod.

[0039] The lower shell 302 is provided with a first step 3021, a second step 3022, a third step 3023, and a second through hole 3025 in sequence, and the inner diameter decreases in sequence. Figure 6As shown, a first threaded hole 3026 is provided around the first step 3021 on the upper surface of the lower shell, and a blind hole 3024 is provided around the second through hole 3025 on the lower surface of the lower shell, and the guide column 303 is located in the blind hole 3024 and moves; the main shaft 306 is fixed in the upper shell 301 and the lower shell 302 through a tapered roller bearing 307 and the second step 3022, and the tapered roller bearing 307 is installed in the cylindrical inner hole formed by the first step 3021 and the sixth step 3015. The tapered roller bearing has good axial force and can offset the reverse force when the main shaft rotates to drive the connecting rod to move downward, thereby protecting the electric screwdriver from axial force.

[0040] The vertical section of the upper shell is T-shaped, such as Figure 7 As shown, a fourth step 3011, a third through hole 3012, and a sixth step 3015 are sequentially provided in the upper shell. The inner diameter of the third through hole 3012 is smaller than the inner diameter of the fourth step 3011. A first step hole 3013 is provided around the fourth step 3011. A second step hole 3014 is provided on the upper surface of the upper shell around the first step hole 3013. The upper shell 301 is connected and fixed to the bracket 2 through the second step hole 3014, and the upper shell 301 is fixedly connected to the lower shell 302 through the first step hole 3013 and the first threaded hole 3026.

[0041] The main shaft 306 includes an upper shaft body and a lower shaft body. Figure 5 As shown, the upper shaft body is provided with a boss 3062 on the outside, a hexagonal countersunk hole 3063 on the top of the upper shaft body, and an external thread 3061 on the outside of the lower shaft body. A hexagonal prism 308 is fitted into the hexagonal countersunk hole 3063, through which the spindle 306 is connected to the output terminal of the electric screwdriver. The electric screwdriver is connected in sequence to the hexagonal prism, the spindle, the connecting rod, and the pressure head. The rotation of the electric screwdriver drives the hexagonal prism and the spindle. The spindle and the connecting rod are connected by threads, and the rotation of the spindle drives the connecting rod up and down.

[0042] The vertical cross section of the connecting rod 305 is T-shaped. Figure 8 As shown, the upper portion is the fifth step 3051, which mates with the third step 3023. A second threaded hole 3052 is provided in the middle of the connecting rod, and the external thread 3061 of the main shaft mates with the internal thread of the second threaded hole 3052. After assembly, the fifth step is located within the third step of the lower housing. Because the inner diameter of the third step is larger than the inner diameter of the second through hole below, it can limit the connecting rod from further downward movement. The fifth step 3051 and the third step 3023 work together to act as a limiter. At the same time, by adjusting the height of the bracket, a distance of 10 mm can be maintained between the bottom pressure head and the water-cooling plate, protecting the operator's safety.

[0043] The bracket 2 is provided with a limiting groove 201 and a first through hole 202. Figure 4As shown, the limiting groove is used to place and limit the position of the electric screwdriver, and the output end of the electric screwdriver extends downward through the first through hole. The electric screwdriver is connected to the hexagonal prism through the first through hole, the fourth step and the third through hole, and the hexagonal prism is connected to the main shaft.

[0044] During assembly, first install the external thread 3061 of the main shaft 306 into the second threaded hole 3052 of the connecting rod 305. The connecting rod 305 is then installed into the lower housing 302 through the second through-hole 3025. A pressure head 304 is mounted at the bottom of the connecting rod 305. Four guide posts 303 are mounted on the pressure head 304, allowing the guide posts 303 to move up and down with the connecting rod 305 within the blind holes 3024. The lower end surface of the boss 3062 mates with the second step 3022, while the upper end surface mates with the tapered roller bearing 307, which is mounted in the cavity formed by the first step 3021 and the fifth step 3051. The upper housing 301 and lower housing 302 are assembled together through the first step hole 3013 and the first threaded hole 3026.

[0045] Install the transmission mechanism 3 on the bracket 2 through the second step hole 3014, install the hexagonal prism 308 on the electric screwdriver 4, and then install the electric screwdriver 4 on the bracket 2. Connect the electric screwdriver 4 and the main shaft 306 through the hexagonal prism 308. One end of the hexagonal prism 308 is installed on the electric screwdriver 4, and the other end is installed in the hexagonal countersunk hole 3063 of the main shaft 306.

Claims

1. A fast holding fixture for semiconductor laser PIV testing, characterized in that: It includes a water-cooling plate, a bracket, a transmission mechanism, and an electric screwdriver. The bracket is installed on the water-cooling plate, the upper end of the bracket is equipped with an electric screwdriver, and the lower end is equipped with a transmission mechanism. The transmission mechanism includes an upper shell and a lower shell that are connected to each other. A pressure head is connected to the lower shell through a guide column. A connecting rod is provided above the pressure head. The connecting rod is threadedly connected to the main shaft, and the output end of the electric screwdriver is connected to the main shaft.

2. The fast holding fixture for semiconductor laser PIV testing according to claim 1, characterized in that: The number of the guide posts is at least two.

3. The fast holding fixture for semiconductor laser PIV testing according to claim 2, characterized in that: There are four guide columns, which are evenly distributed around the connecting rod.

4. The rapid holding fixture for semiconductor laser PIV testing according to claim 1, characterized in that: The lower shell is provided with a first step, a second step, a third step, and a second through hole in sequence, with the inner diameter decreasing in sequence. A first threaded hole is provided around the first step on the upper surface of the lower shell, and a blind hole is provided around the second through hole on the lower surface of the lower shell. The guide post is located in the blind hole. The main shaft is fixed to the upper and lower shells via a tapered roller bearing and the second step. The tapered roller bearing is installed in the cylindrical inner hole formed by the first and sixth steps. The vertical cross-section of the upper shell is T-shaped, and the upper shell is provided with a fourth step, a third through hole, and a sixth step in sequence. The inner diameter of the third through hole is smaller than the inner diameter of the fourth step. A first step hole is provided around the fourth step, and a second step hole is provided on the upper surface of the upper shell outside the first step hole. The upper shell is connected and fixed to the bracket through the second step hole, and the upper shell is fixedly connected to the lower shell through the first step hole and the first threaded hole.

5. The rapid holding fixture for semiconductor laser PIV testing according to claim 4, characterized in that: The main shaft includes an upper shaft body and a lower shaft body. A boss is provided on the outside of the upper shaft body, a hexagonal countersunk hole is provided on the top of the upper shaft body, and an external thread is provided on the outside of the lower shaft body. A hexagonal prism is matched in the hexagonal countersunk hole, and the main shaft is connected to the output end of the electric screwdriver through the hexagonal prism.

6. The fast holding fixture for semiconductor laser PIV testing according to claim 5, characterized in that: The vertical cross-section of the connecting rod is T-shaped, with the fifth step on the upper part, which cooperates with the third step. A second threaded hole is provided inside the middle of the connecting rod, and the external thread of the main shaft is matched with the internal thread of the second threaded hole.

7. The rapid holding fixture for semiconductor laser PIV testing according to claim 1, characterized in that: The bracket is provided with a limiting groove and a first through hole. The limiting groove is used to place and limit the position of the electric screwdriver. The output end of the electric screwdriver extends downward through the first through hole.

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