A multi-angle adjustable manual mechanical arm for chip testing

Abstract

This utility model discloses a manual robotic arm for chip testing capable of multi-angle adjustment, comprising a base plate, a column, and a lifting plate. A first arm segment is rotatably connected to the lifting plate, a second arm segment is rotatably connected to the first arm segment, and a third arm segment is rotatably connected to the second arm segment. The third arm segment is connected to a rotating shaft indexing plate. Connecting shafts and locking components are connected between the lifting plate and the first arm segment, the first arm and the second arm segment, and the second and third arm segments. A rotating shaft passes through the third arm segment, which is equipped with a first positioning component and a second positioning component. The second positioning component includes a fixing plate, and a pressure plate is connected to the side of the fixing plate. A second locking handle is rotatably mounted on the fixing plate, and the locking end of the second locking handle is screwed to the pressure plate. The advantages of this utility model are: it can meet the chip testing requirements at different testing angles, has a simple structure, is easy to process and assemble, has low production costs, can adapt to the testing of a small number of chips, and has low testing costs.

Description

Technical Field

[0001] This utility model relates to the field of chip testing technology, specifically a manual robotic arm for chip testing that can achieve multi-angle adjustment. Background Technology

[0002] With the rapid development of technology, the chip industry is growing at an increasingly fast pace. Miniaturization and multifunctionality are the development trends of the modern chip industry. Since chip manufacturing involves hundreds of steps, errors in any step can lead to device failure; therefore, chip testing is crucial. Chip testing requires a chip tester. Testing involves placing the chip between the test head and the test bench, and a robotic arm drives the test head to move, thus performing the test. Existing robotic arms are mostly intelligent robotic arms, which are expensive and not conducive to the development of small and medium-sized enterprises. Some manual testing robotic arms cannot perform tests at arbitrary angles, resulting in low applicability. For example, a chip testing robotic arm disclosed in patent publication number CN115184780A, although also a manual robotic arm, has a relatively complex structure and cannot rotate the test head at arbitrary angles, thus limiting its application in chip testing. Utility Model Content

[0003] The purpose of this invention is to provide a manual robotic arm for chip testing that can be adjusted at multiple angles, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a manual robotic arm for chip testing capable of multi-angle adjustment, comprising a base plate, a column on the base plate, a lifting plate connected to the column, a first arm rotatably connected to the lifting plate, a second arm rotatably connected to the first arm, a third arm rotatably connected to the second arm, and a rotating shaft indexing plate connected to the third arm. Connecting shafts and locking components are connected between the lifting plate and the first arm, between the first arm and the second arm, and between the second and third arms. A rotating shaft passes through the third arm, is inserted into the center of the rotating shaft indexing plate, and is fixedly connected to the rotating shaft indexing plate. A first positioning component and a second positioning component are provided on the third arm. The second positioning component includes a fixing plate. A pressure plate is connected to the side of the fixing plate near the rotating shaft indexing plate. The fixing plate and the pressure plate are respectively located on both sides of the rotating shaft indexing plate. A second locking handle is rotatably mounted on the fixing plate, and the locking end of the second locking handle is screwed to the pressure plate.

[0005] Further preferably, the rotating shaft indexing plate has a circular structure, and multiple positioning holes are provided on the rotating shaft indexing plate along its circumference for positioning and fixing the rotating shaft indexing plate at different angles; a circular mounting plate is provided on the side of the rotating shaft indexing plate away from the third segment arm for fixing the test head used for chip testing.

[0006] In a further preferred embodiment, the first positioning component includes a fixing block and a first positioning pin. The fixing block is fixed to the side of the third segment arm, and the first positioning pin is screwed onto the fixing block. The end of the first positioning pin is a smooth rod that matches the positioning hole. Rotating the first positioning pin allows it to move relative to the fixing block, inserting the smooth rod portion of the first positioning pin into the positioning hole to fix the rotating shaft indexing plate.

[0007] Further preferably, the pressure plate is L-shaped and is engaged at the edge of the rotating shaft indexing plate, so as not to hinder the rotation of the rotating shaft indexing plate; a pad is provided between the pressure plate and the fixing plate, and the pad is provided on the side of the rotating shaft indexing plate away from the pressure plate, which can assist the pressure plate in pressing and fixing the rotating shaft indexing plate.

[0008] Further preferably, at least one of the opposing sides of the pad and the pressure plate has an anti-slip structure, which can increase the friction between the pad and / or the pressure plate and the rotating shaft indexing plate, and improve the positioning and fixing effect of the rotating shaft indexing plate.

[0009] Further preferably, the locking component includes a locking block and a first locking handle. The locking block is provided with a connecting shaft hole and a locking hole. The connecting shaft hole is connected to a slot that passes through the locking block. The locking hole passes through the locking block and intersects the slot perpendicularly. The first locking handle is engaged with the locking hole. The connecting shaft hole is used for the through-connection of the connecting shaft. By rotating the locking hole with the first locking handle, the gap of the slot can be reduced, thereby causing the connecting shaft hole to deform and locking the connecting shaft, thus fixing the position of the third arm relative to the second arm, the second arm relative to the first arm, and the first arm relative to the lifting plate.

[0010] In a further preferred embodiment, the locking block is provided with at least one fault-tolerant groove, which is connected to the connecting shaft hole. The cross-section of the fault-tolerant groove at the end away from the connecting shaft hole is wider than the cross-section at the end near the connecting shaft hole, thereby reducing the difficulty of deformation of the connecting shaft hole.

[0011] Further preferably, the lifting plate is provided with two connecting seats connected to the first segment arm. The connecting shaft between the lifting plate and the first segment arm is rotatably installed between the two connecting seats. The connecting seats are used for the installation of the connecting shaft, which facilitates the rotation of the first segment arm relative to the lifting plate. A connecting shaft is connected to the end of the first segment arm and the third segment arm near the second segment arm. Locking parts that cooperate with the three connecting shafts are respectively fixed on the connecting seats and the two ends of the second segment arm. The rotation of the third segment arm relative to the second segment arm and the second segment arm relative to the first segment arm are realized through the connecting shafts, thereby realizing the position adjustment of the rotating shaft indexing plate and the connected test head. The second segment arm is I-shaped. The first segment arm and the second segment arm are respectively rotatably set in the I-shaped groove of the second segment arm, which facilitates the rotation of the third rotating arm relative to the second segment arm and the second segment arm relative to the first segment arm.

[0012] In a further preferred embodiment, a linear guide rail and a pleated curtain are connected between the lifting plate and the column. The pleated curtain is placed on the outside of the linear guide rail, and two pleated curtains are placed on the upper and lower sides of the lifting plate. The linear guide rail facilitates the connection between the lifting plate and the column and the lifting of the lifting plate. The pleated curtain is used for dust and insect prevention, providing protection.

[0013] Further preferably, the lifting plate is provided with a third positioning component, which includes a second positioning pin. The second positioning pin has a thread in the middle that is screwed onto the lifting plate. A connecting rod is vertically connected to the end of the second positioning pin away from the pin head. Both ends of the connecting rod are provided with balls. The connecting rod facilitates the rotation of the second positioning pin, allowing it to rotate on the lifting plate. The pin head of the second positioning pin can press against the column or linear guide rail, thereby locking the lifting plate onto the linear guide rail and fixing it after the height of the lifting plate is adjusted. The balls at both ends of the connecting rod can prevent the connecting rod from falling off the second positioning pin and are easy for the operator to grip, facilitating the application of force.

[0014] Beneficial Effects: This utility model's multi-angle adjustable manual robotic arm for chip testing, through the connection shaft and locking mechanism, enables the forward and backward, left and right rotation of the first, second, and third arm segments, allowing for position adjustment of the rotating shaft indexing plate and consequently, the position adjustment of the chip testing head. This allows for chip testing at different positions with convenient adjustment. The first and second positioning components allow the rotating shaft indexing plate to rotate at a set or specific angle, satisfying chip testing requirements at different angles. Specifically, the first positioning pin of the first positioning component engages with the positioning hole of the rotating shaft indexing plate to achieve the desired positioning angle. The second positioning component allows for angle adjustment; the second locking handle pulls the pressure plate closer to the rotating shaft indexing plate, fixing the rotating shaft indexing plate by pressing it against it. This enables fixing the rotating shaft indexing plate at any rotation angle, thus facilitating chip testing at specific angles. The second positioning pin of the third positioning component fixes the lifting plate to the column, allowing for height adjustment of the lifting plate and consequently, the height adjustment of the test head. This manual robotic arm has a simple structure, is easy to process and assemble, and has low production costs. It is also easy to adjust, can adapt to the testing of a small number of chips, and has low testing costs, making it beneficial for the use and development of small and medium-sized enterprises. Attached Figure Description

[0015] Figure 1 This is an isometric structural diagram of a manually adjustable chip testing robotic arm disclosed in an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram showing the interconnection of the first arm segment, the second arm segment, and the third arm segment disclosed in the embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the cooperation structure between the first segment arm and the second segment arm as disclosed in the embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the mating structure between the second arm, the third arm, and the rotating shaft indexing plate disclosed in the embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the locking block disclosed in the embodiment of this utility model.

[0020] Reference numerals: 1-Base plate, 2-Column, 3-Lifting plate, 4-First arm section, 41-Allowing groove, 5-Second arm section, 6-Third arm section, 7-Rotating shaft indexing plate, 71-Positioning hole, 72-Mounting plate, 8-Connecting shaft, 9-Locking component, 91-Locking block, 911-Connecting shaft hole, 912-Slot, 913-Locking hole, 914-Fault-tolerant groove, 92-First locking handle, 10-Rotating shaft, 11-First positioning assembly, 111-Fixing block, 112-First positioning pin, 12-Second positioning assembly, 121-Fixing plate, 122-Pressure plate, 123-Second locking handle, 124-Pad plate, 13-Connecting seat, 14-Third positioning assembly, 141-Second positioning pin, 142-Connecting rod, 15-Flag curtain, 16-Foot, 17-Universal wheel. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1-5As shown, a manual robotic arm for chip testing with multi-angle adjustment is disclosed. This manual robotic arm is connected to the test head of a chip testing instrument, enabling movement within a specific space and easy manual adjustment. It drives the test head of the chip tester to move, enabling the testing of a small number of chips, which is convenient and low-cost. The manual robotic arm includes a base plate 1, a column 2 on the base plate 1, a lifting plate 3 connected to the column 2, a first arm 4 rotatably connected to the lifting plate 3, a second arm 5 rotatably connected to the first arm 4, a third arm 6 rotatably connected to the second arm 5, and a rotating shaft indexing plate 7 connected to the third arm 6. Connecting shafts 8 and locking elements 9 are connected between the lifting plate 3 and the first arm 4, between the first arm 4 and the second arm 5, and between the second arm 5 and the third arm 6. A rotating shaft 10 passes through the third arm 6, is inserted into the center of the rotating shaft indexing plate 7, and is fixedly connected to the rotating shaft indexing plate 7. The base plate 1 supports the column 2, and feet 16 and casters 17 are installed below the base plate 1. The height of the feet 6 is adjustable, which can fix the base plate 1 and prevent it from moving. At the same time, the casters 17 can push the column 2 and the connected segment arms and test head to move, realizing the position movement of the manual robotic arm. The first segment arm 4, the second segment arm 5, and the third segment arm 6 can rotate relative to each other, realizing the forward and backward and left and right movement of the connected rotating shaft indexing plate 7 and the test head in the corresponding horizontal plane, which facilitates the test head's testing of the chip. The rotating shaft indexing plate 7 can rotate, which can meet the needs of the test head to test chips at different angles. Specifically, the third segment arm 6 is equipped with a first positioning component 11 and a second positioning component 12. The first positioning component 11 can position and fix the rotating shaft indexing plate 7 at a set rotation angle, realizing the rotation of the test head at a set angle. The second positioning component 12 can position and fix the rotating shaft indexing plate 7 after rotating at any angle, realizing the rotation of the test head at any angle, thus realizing the testing of chips placed at any angle, with high adaptability. The second positioning assembly 12 includes a fixing plate 121. A pressure plate 122 is connected to the side of the fixing plate 121 near the rotating shaft indexing plate 7. The fixing plate 121 and the pressure plate 122 are respectively located on both sides of the rotating shaft indexing plate 7. A second locking handle 123 is provided on the fixing plate 121, and the locking end of the second locking handle 123 is screwed to the pressure plate 122. The fixing plate 121 is used for mounting the pressure plate 122 and the second locking handle 123. The pressure plate 122 can be pressed against the rotating shaft indexing plate 7 through the second locking handle 123, thereby realizing the positioning and fixing of the rotating shaft indexing plate 7.

[0023] In one embodiment of this application, the rotating shaft indexing plate 7 has a circular structure. Multiple positioning holes 71 are provided on the rotating shaft indexing plate 7 along its circumference. These positioning holes 71, in conjunction with the first positioning component 11, can fix the rotating shaft indexing plate 7, achieving positioning and fixation. Since the positioning holes 71 on the rotating shaft indexing plate 7 are fixed, the rotating shaft indexing plate 7 can be rotated to a set angle, thus adjusting the test head to a set angle. In this embodiment, the positioning holes 71 are evenly arranged along the circumference of the rotating shaft indexing plate 7 and are located at the edge of the rotating shaft indexing plate 7, allowing it to be fixed with minimal force. The first positioning component 11 can be a pin component or a rod component, which can be inserted into the positioning holes 71 to fix the rotating shaft indexing plate 7. A circular mounting plate 72 is provided on the side of the rotating shaft indexing plate 7 away from the third arm 6 for mounting the test head. The circular rotating indexing plate 7 and mounting plate 72 do not affect the installation of the second positioning component 12 when rotating, and can ensure smooth rotation.

[0024] Based on the above scheme, the first positioning component 11 includes a fixing block 111 and a first positioning pin 112. The fixing block 111 is fixed to the side of the third arm 6, and the first positioning pin 112 is screwed onto the fixing block 111, which enables the positioning pin 112 to be installed on the fixing block 111. By rotating the first positioning pin 112, the pin head of the first positioning pin 112 can be inserted into the positioning hole 71, and the first positioning pin 112 will not slip off.

[0025] Based on the above scheme, the pressure plate 122 is L-shaped and is clamped on the edge of the rotating shaft indexing plate 7. Since the rotating shaft indexing plate 7 has a circular structure, it will not hinder the installation of the pressure plate 122. A pad 124 is provided between the pressure plate 122 and the fixing plate 121. The pad 124 is set on the side of the rotating shaft indexing plate 7 away from the pressure plate 122. With the setting of the pad 124, when the second locking handle 123 of the second positioning component 12 rotates, it can pull the pressure plate 122 closer to the rotating shaft indexing plate 7, so that both sides of the rotating shaft indexing plate 7 are squeezed by the pad 124 and the pressure plate 122 respectively, which can clamp the rotating shaft indexing plate 7, prevent the rotating shaft indexing plate 7 from rotating, and fix the rotating shaft indexing plate 7. At this time, the rotating shaft indexing plate 7 can rotate at any angle, that is, the test head can be rotated to any angle and fixed, which can realize chip testing at special angles.

[0026] Based on the above solution, at least one of the opposing sides of the pad 124 and the pressure plate 122 has an anti-slip structure, which can enhance the friction between the pad 124 and / or the pressure plate 122 and the rotating shaft indexing plate 7, improve the firmness and stability of the rotating shaft indexing plate 7 when it is fixed, and ensure the accuracy of the test head in testing the chip. This anti-slip structure can be achieved by providing a frosted surface, an anti-slip layer, or other structures on the pad 124 and / or the pressure plate 122 to increase the friction between the pad 124 and / or the pressure plate 122 and the rotating shaft indexing plate 7.

[0027] In another embodiment of this application, the locking member 9 includes a locking block 91 and a first locking handle 92. The locking block 91 has a connecting shaft hole 911 and a locking hole 913. The connecting shaft hole 911 is connected to a slot 912 that penetrates the locking block 91. The locking hole 913 penetrates the locking block 91 and intersects the slot 912 perpendicularly. The first locking handle 92 is engaged with the locking hole 913. The engagement of the locking block 91 and the first locking handle 92 achieves the fixation of the connecting shaft 8. The connecting shaft 8 is locked and fixed by the locking member 9. The connecting shaft hole 911 is used for the insertion of the connecting shaft 8, and the locking hole 913 is used for the installation of the first locking handle 92. The locking hole 913 is divided into two parts by the slot 912. One part is a smooth hole and the other part is a screw hole. When the first locking handle 92 is rotated, the two parts of the locking hole 913 are gradually brought closer together, which causes the connecting shaft hole 911 to deform and its hole area to gradually decrease. This allows the hole wall of the connecting shaft hole 911 to lock the connecting shaft 8, thus fixing the connecting shaft 8.

[0028] Based on the above scheme, the locking block 91 is provided with at least one tolerance groove 914, which is connected to the connecting shaft hole 911. The tolerance groove 914 reduces the difficulty of deformation of the connecting shaft hole 911, facilitating the locking of the connecting shaft 8 by the connecting shaft hole 911. The cross-section of the tolerance groove 914 at the end away from the connecting shaft hole 911 is wider than the cross-section at the end near the connecting shaft hole 911, further reducing the deformation difficulty of the tolerance groove 914 and indirectly reducing the deformation difficulty of the connecting shaft hole 911. In summary, the design of the tolerance groove 914 and its structure can reduce the deformation difficulty of the connecting shaft hole 911, providing convenience for the connecting shaft hole 911 to clamp the connecting shaft 8.

[0029] In another embodiment of this application, the lifting plate 3 is provided with two connecting seats 13 connected to the first segment arm 4. The connecting shaft 8 between the lifting plate 3 and the first segment arm 4 is rotatably installed between the two connecting seats 13. The setting of the connecting seats 13 facilitates the rotatable connection between the lifting plate 3 and the first segment arm 4. A connecting shaft 8 is connected to the end of the first segment arm 4 and the third segment arm 6 near the second segment arm 5. Locking parts 9 that cooperate with the three connecting shafts 8 are respectively fixed on the connecting seats 13 and the two ends of the second segment arm 5. The second segment arm 5 is I-shaped. The first segment arm 4 and the second segment arm 5 are respectively rotatably set in the I-shaped groove of the second segment arm 5. That is, when the second segment arm 5 rotates relative to the first segment arm 4 and the third segment arm 6 rotates relative to the second segment arm 5, the I-shaped structure of the second segment arm 5 can ensure the rotation of the second segment arm 5 and the third segment arm 6, so that they can rotate to a set angle, thereby effectively ensuring the range of motion and position of the manual robotic arm, and ensuring that the test head connected to it can meet the chip testing at different positions.

[0030] In the scheme of this application, a linear guide rail and a pleated curtain 15 are connected between the lifting plate 3 and the column 2. The pleated curtain 15 covers the outside of the linear guide rail, and two pleated curtains 15 are respectively located on the upper and lower sides of the lifting plate 3. The height of the lifting plate 3 on the column 2 is easily adjusted through the linear guide rail, thereby realizing the height adjustment of the connected test head. The design of the pleated curtain 15 can prevent dust and insects, ensure smooth height adjustment of the lifting plate 3, and improve the appearance and service life of the manual robotic arm. The two pleated curtains 15 ensure full coverage protection of components such as the linear guide rail installed on the column 2.

[0031] In another embodiment of this application, a third positioning component 14 is provided on the lifting plate 3 to fix the lifting plate 3. The third positioning component 14 includes a second positioning pin 141, the second positioning pin 141 has a thread in the middle that is screwed to the lifting plate 3, and a connecting rod 142 is vertically connected to the end of the second positioning pin 141 away from the pin head. Both ends of the connecting rod 142 are provided with balls. That is, by rotating the connecting rod 142, the second positioning pin 141 can be driven to rotate relative to the lifting plate 3, so that the pin head of the second positioning pin 141 abuts against the column 2 or the linear guide rail on the column 2, fixing the lifting plate 3 and preventing the lifting plate 3 from slipping, thereby fixing the lifting plate 3 and thus fixing the test head connected to the manual robotic arm.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A manual robotic arm for chip testing capable of multi-angle adjustment, comprising a base plate (1), a column (2) on the base plate (1), a lifting plate (3) connected to the column (2), a first arm (4) rotatably connected to the lifting plate (3), a second arm (5) rotatably connected to the first arm (4), a third arm (6) rotatably connected to the second arm (5), and a rotating shaft indexing plate (7) connected to the third arm (6). Connecting shafts (8) and locking elements (9) are connected between the lifting plate (3) and the first arm (4), between the first arm (4) and the second arm (5), and between the second arm (5) and the third arm (6). A rotating shaft (10) is inserted into the third arm (6), and the rotating shaft (10) is inserted into the center of the rotating shaft indexing plate (7) and fixedly connected to it. The arm is characterized in that: The third arm (6) is provided with a first positioning component (11) and a second positioning component (12). The second positioning component (12) includes a fixing plate (121). A pressure plate (122) is connected to the side of the fixing plate (121) near the rotating shaft indexing plate (7). The fixing plate (121) and the pressure plate (122) are respectively located on both sides of the rotating shaft indexing plate (7). The fixing plate (121) is provided with a second locking handle (123) that is rotatably set. The locking end of the second locking handle (123) is screwed to the pressure plate (122).

2. The manual mechanical arm capable of multi-angle adjustment for chip testing according to claim 1, wherein: The rotating shaft indexing plate (7) has a circular structure. Multiple positioning holes (71) are provided on the rotating shaft indexing plate (7) along its circumference. A circular mounting plate (72) is provided on the side of the rotating shaft indexing plate (7) away from the third arm (6). 3.The manually operated mechanical arm capable of multi-angle adjustment for chip testing according to claim 2, wherein: The first positioning component (11) includes a fixing block (111) and a first positioning pin (112). The fixing block (111) is fixed to the side of the third arm (6), and the first positioning pin (112) is screwed onto the fixing block (111). The end of the first positioning pin (112) is a smooth rod and matches the positioning hole (71).

4. The manual mechanical arm capable of multi-angle adjustment for chip testing according to claim 2, characterized in that: The pressure plate (122) is L-shaped and is clamped on the edge of the rotating shaft indexing plate (7). A pad (124) is provided between the pressure plate (122) and the fixing plate (121). The pad (124) is located on the side of the rotating shaft indexing plate (7) away from the pressure plate (122).

5. The manual mechanical arm capable of multi-angle adjustment for chip testing according to claim 4, characterized in that: At least one of the opposing sides of the pad (124) and the pressure plate (122) has an anti-slip structure.

6. The manual mechanical arm capable of multi-angle adjustment for chip testing according to claim 1, characterized in that: The locking component (9) includes a locking block (91) and a first locking handle (92). The locking block (91) is provided with a connecting shaft hole (911) and a locking hole (913). The connecting shaft hole (911) is connected to a slot (912) that passes through the locking block (91). The locking hole (913) passes through the locking block (91) and is perpendicular to the slot (912). The first locking handle (92) is engaged with the locking hole (913).

7. The manual mechanical arm capable of multi-angle adjustment for chip testing according to claim 6, characterized in that: The locking block (91) is provided with at least one fault-tolerant groove (914), which is connected to the connecting shaft hole (911). The cross section of the fault-tolerant groove (914) at the end away from the connecting shaft hole (911) is wider than the cross section at the end near the connecting shaft hole (911). 8.The manually operated mechanical arm capable of multi-angle adjustment for chip testing according to claim 1, wherein: The lifting plate (3) is provided with two connecting seats (13) connected to the first arm (4). The connecting shaft (8) between the lifting plate (3) and the first arm (4) is rotatably installed between the two connecting seats (13). The first arm (4) and the third arm (6) are each connected to a connecting shaft (8) near the second arm (5). Locking parts (9) that cooperate with the three connecting shafts (8) are respectively fixed on the connecting seats (13) and the two ends of the second arm (5). The second arm (5) is in the shape of an I-beam. The first arm (4) and the second arm (5) are respectively rotatably installed in the I-beam groove of the second arm (5).

9. The manual mechanical arm capable of multi-angle adjustment for chip testing according to claim 1, characterized in that: A linear guide rail and a gusseted curtain (15) are connected between the lifting plate (3) and the column (2). The gusseted curtain (15) is placed on the outside of the linear guide rail, and the two gusseted curtains (15) are placed on the upper and lower sides of the lifting plate (3).

10. The manual mechanical arm capable of multi-angle adjustment for chip testing according to claim 1, characterized in that: The lifting plate (3) is provided with a third positioning component (14), which includes a second positioning pin (141). The second positioning pin (141) has a thread in the middle that is screwed to the lifting plate (3). The end of the second positioning pin (141) away from the pin head is vertically connected to a connecting rod (142), and the two ends of the connecting rod (142) are respectively provided with balls.

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