Adjustable chip calibration jig

Abstract

The utility model relates to chip calibration fixture technical field, especially disclose a kind of adjustable chip calibration fixture, including base, interface module and two chip test stations, rotating interface protective cover plate makes interface protective cover plate cover the area where interface module is, then fixed interface protective cover plate by the thread cooperation of fastening bolt and square nut, realize the physical protection of interface module, from source break dust, metal scrap, fiber impurity invasion, avoid interface contact bad and data transmission error, avoid accidental touch when operator carries, sorts fixture, to reduce the electrostatic damage and physical damage of interface module, reduce signal interference risk when calibrating debugging, avoid causing data transmission error, guarantee fixture interface reliability and calibration debugging function, to further improve the efficiency of fixture use, prolong service life, and indirectly help chip calibration precision and product yield stability, reduce equipment maintenance cost and production delay risk.

Description

Technical Field

[0001] This utility model relates to the field of chip calibration fixture technology, and in particular to an adjustable chip calibration fixture. Background Technology

[0002] In the chip research, development, production, and testing stages, debuggable chip calibration fixtures are key equipment to ensure chip performance accuracy. Their core function is to establish connections with external testing instruments and data transmission equipment through interface modules to achieve precise calibration and debugging of chip parameters. As chip technology develops towards higher integration and higher sensitivity, the interface modules of debuggable chip calibration fixtures are becoming increasingly sophisticated. They typically integrate multiple types of interfaces such as data transmission interfaces, power interfaces, and signal acquisition interfaces. The stability and reliability of these interfaces directly determine the accuracy of calibration and debugging results, thereby affecting the final performance of the chip and the product yield.

[0003] However, when the fixture is idle or being moved, dust in the air, metal shavings in the workshop environment, and fibrous impurities can easily penetrate into the exposed interface. Long-term accumulation can lead to poor interface contact, which not only increases the risk of signal interference during calibration and debugging, but may also cause data transmission errors. On the other hand, accidental contact by operators when moving or organizing the fixture can easily directly affect the exposed interface pins or internal circuits, causing electrostatic damage or physical damage to the interface module. This can prevent the fixture from performing calibration and debugging functions normally, increasing equipment maintenance costs and the risk of production delays. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a debuggable chip calibration fixture. It solves the problem that when the fixture is idle or being moved, dust in the air, metal debris, and fibrous impurities in the workshop environment can easily penetrate the exposed interface, leading to poor interface contact over time. This not only increases the risk of signal interference during calibration and debugging but may also cause data transmission errors. Furthermore, accidental contact by operators during handling and organizing the fixture can easily directly affect the exposed interface pins or internal circuitry, causing electrostatic damage or physical damage to the interface module. This prevents the fixture from performing its calibration and debugging functions properly, increasing equipment maintenance costs and the risk of production delays.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A debuggable chip calibration fixture includes a base, an interface module, and two chip testing stations. The base has a protective mechanism on its exterior to shield the interface module. The protective mechanism includes a rotating support shaft, an interface protective cover, a fastening bolt, and a square nut. The rotating support shaft is fixedly installed on the exterior of the base. One end of the interface protective cover is rotatably connected to the exterior of the base, and the fastening bolt is rotatably connected to the other end of the interface protective cover. The square nut is located on the exterior of the base, and the fastening bolt is threaded into the interior of the square nut. The interface protective cover has an assembly hole on its exterior, through which it is rotatably connected to the exterior of the rotating support shaft.

[0006] Preferably, the rotary support shaft is provided with an axial limiting pin on its exterior to prevent lateral movement of the rotary support shaft. A limiting pin groove is provided on the exterior of the rotary support shaft, and the end of the axial limiting pin is engaged inside the limiting pin groove. The axial limiting pin effectively restricts the lateral movement of the rotary support shaft, ensures the covering accuracy of the interface protective cover, and avoids protection failure due to displacement of the rotary support shaft.

[0007] Preferably, both ends of the axial limiting pin are provided with limiting springs for restricting the movement of the axial limiting pin. Both ends of the axial limiting pin are provided with deformation grooves. One end of the limiting spring is fixedly connected to the inside of the deformation groove, and the other end extends outward. After the axial limiting pin is inserted into the limiting pin slot, the limiting spring pops out under its own elasticity and fits against the inside of the limiting pin slot, preventing the axial limiting pin from moving axially and preventing the axial limiting pin from disengaging from the limiting pin slot. The deformation groove provides space for the axial limiting pin to insert into the limiting pin slot.

[0008] Preferably, the base has an assembly groove on its exterior, a square nut is snapped into the inside of the assembly groove, and a through hole is provided on the inner side of the base corresponding to the assembly groove. The fastening bolt is threaded into the inside of the square nut through the through hole, and the connection between the square nut and the assembly groove facilitates the replacement of the square nut.

[0009] Preferably, the base is externally fixed with a shelf to regulate the placement of the interface protective cover when it is not obstructed, preventing the interface protective cover from shaking or colliding and causing damage to itself or other structures, thus extending the service life of the interface protective cover.

[0010] Compared with the prior art, the present invention has the following beneficial effects: When the interface module is not in use, the operator holds the free end of the interface protective cover and slowly rotates it around the rotating support shaft until the cover completely covers the area where the interface module is located, ensuring that all interfaces are blocked. Then, the operator aligns the fastening bolt at the other end of the cover with the square nut in the mounting slot on the outside of the base, and rotates the bolt until it passes through the corresponding through hole on the base, finally threading into the inside of the square nut. Through the threaded engagement of the bolt and nut, the cover is securely fixed in place, blocking the interface module and providing physical protection. This prevents dust, metal shavings, and fibrous impurities from entering, avoiding poor interface contact and data transmission errors. It also prevents accidental contact during operator handling and maintenance of the fixture, reducing electrostatic damage and physical damage to the interface module, lowering the risk of signal interference during calibration and debugging, preventing data transmission errors, ensuring the reliability of the fixture interface and calibration / debugging functions, thereby improving fixture efficiency, extending its service life, and indirectly contributing to stable chip calibration accuracy and product yield, while reducing equipment maintenance costs and production delay risks. Attached Figure Description

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Structural diagram of the central base; Figure 3 This utility model Figure 1 Exploded view of the central base; Figure 4 This utility model Figure 3 Structural diagram of the central axis limiting pin.

[0013] Legend: 1. Base; 2. Interface module; 3. Rotary support shaft; 4. Interface protective cover; 5. Fastening bolt; 6. Square nut; 7. Axial limit pin; 8. Limit pin slot; 9. Limit spring; 10. Deformation groove; 11. Assembly groove; 12. Through hole; 13. Shelf; 14. Assembly hole; 15. Chip testing station. Detailed Implementation

[0014] This application provides a debuggable chip calibration fixture, which effectively solves the technical problem that when the fixture is idle or being transported, dust in the air, metal debris in the workshop environment, fiber impurities, etc. can easily penetrate into the exposed interface. Long-term accumulation can lead to poor interface contact, which not only increases the risk of signal interference during calibration and debugging, but may also cause data transmission errors. On the other hand, accidental contact by operators when handling and organizing the fixture can easily directly affect the exposed interface pins or internal circuits, causing electrostatic damage or physical damage to the interface module, making the fixture unable to perform calibration and debugging functions normally, and increasing equipment maintenance costs and production delay risks.

[0015] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application effectively solves the problem that when the fixture is idle or being moved, dust in the air, metal debris, fiber impurities in the workshop environment, etc., can easily penetrate into the exposed interface. Long-term accumulation can lead to poor interface contact, which not only increases the risk of signal interference during calibration and debugging, but may also cause data transmission errors. On the other hand, accidental contact by operators when moving or organizing the fixture can easily directly affect the exposed interface pins or internal circuits, causing electrostatic damage or physical damage to the interface module, making the fixture unable to perform calibration and debugging functions normally, increasing equipment maintenance costs and the risk of production delays. The overall idea is as follows: To address the problems existing in the prior art, this utility model provides a debuggable chip calibration fixture, including a base 1, an interface module 2, and two chip testing stations 15. The base 1 serves as the core supporting component of the fixture, providing a stable mounting platform for all external structures such as the interface module 2, protective mechanism, and shelf 13. The interface module 2 acts as the connection hub between the chip testing station 15 and external calibration equipment, such as oscilloscopes, signal generators, and computers, enabling bidirectional transmission of electrical and data signals between the chip and external devices, such as issuing chip test commands and transmitting calibration data. It is a key functional component for chip calibration and debugging. All calibration operations must be completed after establishing a connection with the chip through the interface module 2. The two chip testing stations 15 operate independently and can simultaneously hold two chips to be calibrated. The calibration process is completed synchronously with external devices through the interface module 2. Compared to a single testing station, the dual-station design enables parallel operation, completing the calibration of twice the number of chips in the same time. It is particularly suitable for batch chip production or debugging scenarios, significantly shortening the overall operation cycle.

[0016] The base 1 is provided with a protective mechanism for shielding the interface module 2. The protective mechanism includes a rotating support shaft 3, an interface protective cover plate 4, a fastening bolt 5, and a square nut 6. The rotating support shaft 3 is fixedly installed on the outside of the base 1. One end of the interface protective cover plate 4 is rotatably connected to the outside of the base 1. The fastening bolt 5 is rotatably connected to the other end of the interface protective cover plate 4. The square nut 6 is located on the outside of the base 1. The fastening bolt 5 is threaded into the inside of the square nut 6. The interface protective cover plate 4 has an assembly hole 14 on its outside. The interface protective cover plate 4 is rotatably connected to the outside of the rotating support shaft 3 through the assembly hole 14.

[0017] The rotating support shaft 3 provides a pivot point for the interface protective cover 4, allowing the interface protective cover 4 to rotate around the rotating support shaft 3. This enables switching between two states: covering the interface module 2 and removing it from the cover. When the interface module 2 is not in use, the interface protective cover 4 rotates around the rotating support shaft 3 to cover the interface module 2, forming a physical barrier to prevent dust and foreign objects from entering the interface. When the interface module 2 is in use, it can rotate to the inside of the shelf 13 to avoid covering the interface and affecting the chip connection. When the interface protective cover 4 covers the interface module 2, the fastening bolt 5 passes through the through hole 12 of the base 1 and is threadedly connected to the square nut 6, firmly fixing the interface protective cover 4 in the covered position and preventing the interface protective cover 4 from loosening and exposing the interface.

[0018] An axial limiting pin 7 is provided on the outside of the rotating support shaft 3 to prevent the lateral movement of the rotating support shaft 3. A limiting pin groove 8 is opened on the outside of the rotating support shaft 3. The end of the axial limiting pin 7 is engaged in the inside of the limiting pin groove 8. Both ends of the axial limiting pin 7 are provided with limiting spring pieces 9 to restrict the movement of the axial limiting pin 7. Both ends of the axial limiting pin 7 are provided with deformation grooves 10. One end of the limiting spring piece 9 is fixedly connected to the inside of the deformation groove 10, and the other end extends outward.

[0019] The axial limiting pin 7 effectively restricts the lateral movement of the rotating support shaft 3, ensuring the shielding accuracy of the interface protective cover 4, preventing the protection from failing due to the displacement of the rotating support shaft 3, and improving the reliability of the protective mechanism. At the same time, it can be pulled horizontally to disengage from the limiting pin slot 8, releasing the restriction on the rotating support shaft 3 and providing conditions for the disassembly and replacement of the interface protective cover 4. After the axial limiting pin 7 is engaged in the limiting pin slot 8, the limiting spring 9 pops out under its own elasticity and fits inside the limiting pin slot 8, preventing the axial limiting pin 7 from moving axially and preventing the axial limiting pin 7 from disengaging from the limiting pin slot 8. The deformation groove 10 provides space for the axial limiting pin 7 to insert into the limiting pin slot 8.

[0020] The base 1 has an assembly groove 11 on its outside. A square nut 6 is snapped into the inside of the assembly groove 11. The base 1 has a through hole 12 on the inside side of the assembly groove 11. The fastening bolt 5 is threaded into the inside of the square nut 6 through the through hole 12. The connection between the square nut 6 and the assembly groove 11 facilitates the replacement of the square nut 6.

[0021] A shelf 13 is fixedly installed on the outside of the base 1. When the interface protective cover 4 does not cover the interface module 2, one end of the interface protective cover 4 is located inside the shelf 13. When the interface protective cover 4 does not cover the interface module 2, it provides a place for the interface protective cover 4, so that one end of the interface protective cover 4 can be stably located inside the shelf 13. It standardizes the placement position of the interface protective cover 4 in the uncovered state, avoids the interface protective cover 4 from shaking or colliding and causing damage to itself or other structures, and extends the service life of the interface protective cover 4.

[0022] Example 1 When interface module 2 is not in use, the operator holds the free end of interface protective cover 4 and slowly rotates it around the rotating support shaft 3 until it completely covers the area where interface module 2 is located, ensuring that all interfaces of interface module 2 are blocked. At this time, the fastening bolt 5 at the other end of interface protective cover 4 is aligned with the square nut 6 in the external mounting groove 11 of base 1. The fastening bolt 5 is rotated so that it passes through the corresponding through hole 12 in base 1 and is finally threaded into the inside of square nut 6. Through the threaded engagement between the fastening bolt 5 and square nut 6, interface protective cover 4 is securely fastened. Fixed in position to shield interface module 2, it provides physical protection for interface module 2, blocking the intrusion of dust, metal debris, and fibrous impurities from the source, avoiding poor interface contact and data transmission errors, and preventing accidental contact by operators when handling or organizing the fixture. This reduces electrostatic damage and physical damage to interface module 2, lowers the risk of signal interference during calibration and debugging, avoids data transmission errors, ensures the reliability of the fixture interface and calibration and debugging functions, thereby improving fixture usage efficiency, extending service life, and indirectly contributing to the stability of chip calibration accuracy and product yield, reducing equipment maintenance costs and production delay risks.

[0023] Example 2 If the interface protective cover 4 needs to be replaced, first pull the axial limiting pin 7 horizontally to disengage the end of the axial limiting pin 7 from the limiting pin slot 8 outside the rotating support shaft 3, thus releasing the lateral movement restriction on the rotating support shaft 3. Next, rotate the fastening bolt 5 to disengage the threaded connection between the fastening bolt 5 and the square nut 6. Then, pull the interface protective cover 4 to disengage the rotational connection between the interface protective cover 4 and the rotating support shaft 3. Remove the old interface protective cover 4 from the rotating support shaft 3. After placing the new interface protective cover 4 on the outside of the rotating support shaft 3, press the limiting spring 9 to move the limiting spring 9 towards the deformation groove 10. When deformation occurs, the axial limiting pin 7 is inserted into the limiting pin slot 8 of the rotating support shaft 3, and the limiting spring 9 is released. Under its own elasticity, the limiting spring 9 pops out from the deformation groove 10 and fits inside the limiting pin slot 8, thus restricting the movement of the axial limiting pin 7 and completing the limiting and fixing of the rotating support shaft 3. After that, the new interface protective cover 4 is rotated to the position of blocking the interface module 2. The fastening bolt 5 is threadedly connected to the square nut 6 according to the operation of embodiment 1 to complete the replacement of the interface protective cover 4, ensuring that the new interface protective cover 4 can normally protect the interface module 2, thereby ensuring the protective effect of the interface protective cover 4.

[0024] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A debuggable chip calibration fixture, comprising a base (1), an interface module (2), and two chip testing stations (15), characterized in that, The base (1) is provided with a protective mechanism for shielding the interface module (2). The protective mechanism includes a rotating support shaft (3), an interface protective cover plate (4), fastening bolts (5) and a square nut (6). The rotating support shaft (3) is fixedly installed on the outside of the base (1). One end of the interface protection cover (4) is rotatably connected to the outside of the base (1). The fastening bolt (5) is rotatably connected to the other end of the interface protection cover (4). The square nut (6) is set on the outside of the base (1). The fastening bolt (5) is threadedly connected to the inside of the square nut (6). The interface protective cover (4) has an assembly hole (14) on its outside, and the interface protective cover (4) is rotatably connected to the outside of the rotating support shaft (3) through the assembly hole (14).

2. The debuggable chip calibration fixture as described in claim 1, characterized in that, The outside of the rotating support shaft (3) is provided with an axial limiting pin (7) for preventing the lateral movement of the rotating support shaft (3).

3. The debuggable chip calibration fixture as described in claim 1, characterized in that, The rotating support shaft (3) has a limiting pin groove (8) on its outside; The end of the axial limiting pin (7) is engaged inside the limiting pin groove (8).

4. The debuggable chip calibration fixture as described in claim 2, characterized in that, Both ends of the axial limiting pin (7) are provided with limiting springs (9) for restricting the movement of the axial limiting pin (7).

5. The debuggable chip calibration fixture as described in claim 2, characterized in that, Both ends of the axial limiting pin (7) are provided with deformation grooves (10); One end of the limiting spring (9) is fixedly connected to the inside of the deformation groove (10), and the other end extends outward.

6. The debuggable chip calibration fixture as described in claim 1, characterized in that, The base (1) has an assembly slot (11) on its outside. The square nut (6) is engaged inside the assembly slot (11).

7. The debuggable chip calibration fixture as described in claim 1, characterized in that, The base (1) has a through hole (12) on one side of the corresponding mounting groove (11); The fastening bolt (5) is threaded into the inside of the square nut (6) through the through hole (12).

8. The debuggable chip calibration fixture as described in claim 1, characterized in that, A shelf (13) is fixedly installed on the outside of the base (1).

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