Driving mechanism and chip detection platform

Abstract

The utility model relates to a kind of driving mechanism and chip detection platform, and driving mechanism includes motor, shaft coupling, screw rod, nut, guide assembly and limiting component, the motor is connected with the screw rod drive by the shaft coupling, the nut is set on the screw rod and can move along screw rod, the guide assembly is set along the screw rod axial direction, the nut is connected with the guide assembly, the limiting component is connected with the nut or the guide assembly and located in the side of the screw rod.Driving mechanism is located in the side of material tray, without occupying large space in the height direction of material tray, chip detection platform overall occupies small space, and screw rod small lead angle rotation return gap is small, cooperate guide assembly and limiting component, the error is small in running process, realize high-precision linear motion conversion into reciprocating rotary motion.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary motion to linear motion conversion, and in particular to a drive mechanism and a chip testing platform. Background Technology

[0002] After chip fabrication, testing is required. Before testing, the chips are typically placed in a material tray and then tested using testing equipment. During placement, misalignment of the chip contacts can easily occur, leading to test failures or even misjudgments. Usually, the material tray needs to be rotated to adjust the chip position. Traditionally, the material tray is driven by a worm gear, synchronous belt drive, or direct-drive motor. However, worm gears have a certain degree of backlash, and synchronous belt drives are prone to elastic deformation, which can easily lead to large transmission errors. Furthermore, placing a motor in the center of the bottom of the material tray to drive its rotation requires a large amount of space. Utility Model Content

[0003] Based on this, the present invention provides a drive mechanism and chip testing platform that not only occupies little space but also has high transmission accuracy.

[0004] A drive mechanism includes a motor, a coupling, a lead screw, a nut, a guide assembly, and a limiting assembly. The motor is connected to the lead screw via the coupling. The nut is sleeved on the lead screw and can move along the lead screw. The guide assembly is arranged along the axial direction of the lead screw. The nut is connected to the guide assembly. The limiting assembly is connected to the nut or the guide assembly and is located on one side of the lead screw.

[0005] In one embodiment, the guide assembly includes a sliding rail and a slider that are slidably engaged. The slide rail is disposed below the lead screw, the lower part of the slider is slidably engaged with the slide rail, and the upper part of the slider is connected to the nut; or,

[0006] The guide assembly includes a guide rod arranged parallel to the lead screw, and the nut is movably sleeved on the guide rod.

[0007] In one embodiment, the limiting component includes a support base, a first follower, and a second follower. The nut is connected to the support base, the support base is connected to the upper end face of the slider, and the first follower and the second follower are disposed on the support base at a distance from each other.

[0008] In one embodiment, the driving mechanism further includes a connecting plate and a connecting member. The connecting plate is connected to the slider. The support base includes a first sub-base and a second sub-base. The first sub-base is nested and locked to the connecting plate with the nut. The second sub-base has an oblong hole. The second sub-base is rotatably connected to the connecting plate through the connecting member and the oblong hole. The first follower is rotatably connected to the first sub-base, and the second follower is rotatably connected to the second sub-base.

[0009] In one embodiment, the drive mechanism further includes a base and two mounting seats, the two mounting seats being spaced apart and both connected to the base, the motor being locked onto one of the mounting seats and its drive shaft extending out of the mounting seat and connected to one end of the coupling, and one end of the lead screw being rotatably mounted on the other mounting seat and extending out of the mounting seat and connected to the other end of the coupling.

[0010] In one embodiment, both the first follower and the second follower are cam followers.

[0011] In one embodiment, the coupling is a diaphragm coupling.

[0012] In one embodiment, the motor is a closed-loop stepper motor.

[0013] In one embodiment, the slide rail is disposed on the base, and the slide rail is a linear guide rail with a width greater than the diameter of the lead screw.

[0014] A chip testing platform includes a base, a material tray, a connecting arm, and a driving mechanism. The material tray is rotatably connected above the base. The driving mechanism is located on one side of the material tray and connected to the base. One end of the connecting arm is rotatably connected to the material tray, and the other end of the connecting arm is limited to the limiting component.

[0015] The drive mechanism is connected to one side of the base of the chip testing platform. The connecting arm on the same side is limited by the limiting component. When the motor is started, the motor rotates and transmits power to the lead screw through the coupling. The lead screw rotates synchronously, driving the nut matched with the lead screw to move along the lead screw. The nut is connected to the guide component, and the limiting component connected to the nut or guide component moves synchronously with it, thereby driving the connecting arm and the material tray to rotate within a certain stroke. The drive mechanism and chip testing platform of this utility model have the drive mechanism located on one side of the material tray, which does not require a large space in the height direction of the material tray. The chip testing platform occupies a small space overall. Moreover, the lead screw has a small lead and a small return clearance. With the help of the guide component and the limiting component, the operation is stable and the error is small, realizing the conversion of high-precision linear motion into reciprocating rotary motion. Attached Figure Description

[0016] The above and other objects, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the present disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0017] Figure 1 This is a schematic diagram from a first-person perspective of an embodiment of a chip testing platform;

[0018] Figure 2 This is a schematic diagram of a chip testing platform from a second perspective according to an embodiment;

[0019] Figure 3 This is a schematic diagram of a drive mechanism from a first-view perspective according to an embodiment;

[0020] Figure 4 This is an exploded view of the drive mechanism of one embodiment;

[0021] Figure 5 This is a schematic diagram of the drive mechanism of one embodiment from a second perspective.

[0022] The attached figures are labeled as follows:

[0023] 1. Drive mechanism; 10. Motor; 20. Coupling; 30. Lead screw; 40. Nut; 50. Guide assembly; 510. Slide rail; 520. Slider; 60. Limiting assembly; 610. Support base; 612. First sub-base; 614. Second sub-base; 6142. Waist-shaped hole; 620. First follower; 630. Second follower; 70. Connecting plate; 80. Base; 90. Mounting base; 2. Base; 3. Material tray; 4. Connecting arm. Detailed Implementation

[0024] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0025] The specific embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0026] Reference Figure 1-2 This utility model provides a chip testing platform, including a base 2, a material tray 3, a connecting arm 4, and a drive mechanism 1. Combined with... Figure 3-4The drive mechanism 1 in this embodiment includes a motor 10, a coupling 20, a lead screw 30, a nut 40, a guide assembly 50, and a limiting assembly 60. The motor 10 is connected to the lead screw 30 via the coupling 20. The nut 40 is sleeved on the lead screw 30 and can move along it. The guide assembly 50 is arranged along the axial direction of the lead screw 30, and the nut 40 is connected to the guide assembly 50. The limiting assembly 60 is connected to either the nut 40 or the guide assembly 50 and is located on one side of the lead screw 30. Further, the material tray 3 is rotatably connected above the base 2, and the drive mechanism 1 is located on one side of the material tray 3 and connected to the base 2. One end of the connecting arm 4 is rotatably connected to the material tray 3, and the other end of the connecting arm 4 is limited to the limiting assembly 60. When chips are placed on the material tray 3, the drive mechanism 1 drives the connecting arm 4 to rotate the material tray 3 slightly relative to the base 2, resulting in small motion errors and more accurate chip position adjustment.

[0027] Optionally, the base 2 is made of HT250 casting in one piece, ensuring good stability. The bottom of the base 2 is made of fluoroprene rubber, which is rust-proof and provides good shock absorption. The lead screw 30 and nut 40 are ground ball screws 30 with a lead of 1 and an accuracy grade of C5, providing high precision with a small stroke, further ensuring transmission accuracy.

[0028] The drive mechanism 1 is connected to one side of the base 2 of the chip testing platform. The connecting arm 4 on the same side is limited to the limiting component 60. The motor 10 is started, and the rotation of the motor 10 transmits power to the lead screw 30 through the coupling 20. The lead screw 30 rotates synchronously, driving the nut 40 matched with the lead screw 30 to move along the lead screw 30. The nut 40 is connected to the guide component 50, and the limiting component 60 connected to the nut 40 or the guide component 50 moves synchronously with it, thereby driving the connecting arm 4 and the material tray 3 to rotate within a certain stroke. The drive mechanism 1 and the chip testing platform of this utility model are located on one side of the material tray 3, so there is no need to occupy a large space in the height direction of the material tray 3. The chip testing platform occupies a small space overall. Moreover, the lead screw 30 has a small return gap when rotating with a small lead. With the cooperation of the guide component 50 and the limiting component 60, the operation is stable and the error is small, realizing the conversion of high-precision linear motion into reciprocating rotary motion.

[0029] Optionally, refer to Figure 3-4In one embodiment, the guide assembly 50 includes a sliding rail 510 and a slider 520. The sliding rail 510 is disposed below the lead screw 30, the lower part of the slider 520 is slidably engaged with the sliding rail 510, and the upper part of the slider 520 is connected to the nut 40. The nut 40, connected to the slider 520, moves smoothly along the lead screw 30 under the guidance of the sliding rail 510, preventing the nut 40 from vibrating during movement. Optionally, the sliding rail 510 is a linear guide rail with a width greater than the diameter of the lead screw 30, possessing high rigidity, high load-bearing capacity, high precision, and stability, making the nut 40 run more smoothly along the lead screw 30 under the guidance of the sliding rail 510.

[0030] In other embodiments, the guide assembly 50 may also be a guide rod arranged parallel to the lead screw 30, with the nut 40 movably sleeved on the guide rod, so that the nut 40 can move smoothly along the guide rod as the lead screw 30 rotates.

[0031] Specifically, refer to Figure 3 and Figure 4 In one embodiment, the limiting component 60 includes a support base 610, a first follower 620, and a second follower 630. The nut 40 is connected to the support base 610, which is connected to the upper end face of the slider 520. The first follower 620 and the second follower 630 are disposed on the support base 610 at a distance from each other. The support base 610 enables the first follower 620 and the second follower 630 to move synchronously with the nut 40. One end of the connecting arm 4 rests on the support base 610 and is located between the first follower 620 and the second follower 630, with its left and right sides respectively limited by the first follower 620 and the second follower 630. When the support base 610, the second follower 630, and the second follower 630 move left and right along the lead screw 30 with the nut 40, the other end of the connecting arm 4 can rotate adaptively, driving the material tray 3 to rotate back and forth around its axis, so as to quickly and accurately adjust the position of the chips on the material tray 3. Optionally, in one embodiment, both the first follower 620 and the second follower 630 are cam followers. Using double cam followers not only ensures the accuracy of the transmission process, but is also easy to obtain and has low manufacturing cost.

[0032] Furthermore, referring to Figure 3 and Figure 4In one embodiment, the drive mechanism 1 further includes a connecting plate 70 and a connecting member, the connecting plate 70 being connected to the slider 520. The support base 610 includes a first sub-base 612 and a second sub-base 614, the first sub-base 612 being nested and locked to the connecting plate 70 with the nut 40. The first sub-base 612 and the nut 40 are nested and tightly connected as one unit, and the first sub-base 612 is locked to the connecting plate 70, meaning that the positions of the first sub-base 612 and the nut 40 relative to the connecting plate 70 remain unchanged. Further, the first follower 620 is rotatably connected to the first sub-base 612 so that the first follower 620 adapts to the positional changes during the rotation of the connecting arm 4. The second sub-base 614 is provided with an oblong hole 6142, and the second sub-base 614 is adjustablely connected to the connecting plate 70 through the oblong hole 6142 and the connecting member. Optionally, the connecting member can be a standard part such as a screw or bolt. During installation, the connector is pre-tightened within the oblong hole 6142 to initially determine the positions of the first sub-seat 612 and the second sub-seat 614. The connecting arm 4 is then placed between the first follower 620 and the second follower 630. The gap between the first follower 620 and the second follower 630 is adjusted by changing the position of the connector within the oblong hole 6142. After adjustment, the connector is locked to better accommodate the rotation of the connecting arm 4, ensuring transmission accuracy and facilitating adjustment. The second follower 630 is rotatably connected to the second sub-seat 614 to adapt to positional changes during the rotation of the connecting arm 4.

[0033] Furthermore, in one embodiment, the drive mechanism 1 further includes a base 80 and two mounting seats 90, the two mounting seats 90 being spaced apart and both connected to the base 80. The motor 10 is locked onto one of the mounting seats 90, and its drive shaft extends out of the mounting seat 90 and connects to one end of the coupling 20. One end of the lead screw 30 is rotatably mounted on the other mounting seat 90 and extends out of the mounting seat 90 and connects to the other end of the coupling 20. The slide rail 510 is disposed on the base 80 and located on the side of the mounting seat 90 away from the motor 10. The mounting seats 90 and the base 80 integrate the various parts of the drive mechanism 1 into a whole, facilitating the installation of the drive mechanism 1 on the chip testing platform.

[0034] Optionally, in one embodiment, the coupling 20 is a diaphragm coupling 20, which provides higher transmission accuracy. In one embodiment, the motor 10 is a closed-loop stepper motor 10, which can more precisely control the movement stroke of the lead screw 30, thereby better controlling the moving position of the nut 40, and thus accurately adjusting the position of the material tray 3 and the chip.

[0035] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0037] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0038] While this specification has shown and described various embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and essence of the present invention. It should be understood that various alternatives to the embodiments of the present invention described herein may be employed in the practice of the present invention. The appended claims are intended to define the scope of protection of the present invention and therefore cover the modular compositions, equivalents, or alternatives within the scope of these claims.

Claims

1. A driving mechanism, characterized in that, The device includes a motor, a coupling, a lead screw, a nut, a guide assembly, and a limiting assembly. The motor is connected to the lead screw via the coupling. The nut is fitted onto the lead screw and can move along it. The guide assembly is arranged along the axial direction of the lead screw. The nut is connected to the guide assembly. The limiting assembly is connected to the nut or the guide assembly and is located on one side of the lead screw.

2. The driving mechanism according to claim 1, characterized in that, The guide assembly includes a sliding rail and a slider that are in sliding engagement. The sliding rail is located below the lead screw, the lower part of the slider is in sliding engagement with the sliding rail, and the upper part of the slider is connected to the nut; or, The guide assembly includes a guide rod arranged parallel to the lead screw, and the nut is movably sleeved on the guide rod.

3. The driving mechanism according to claim 2, characterized in that, The limiting component includes a support base, a first follower, and a second follower. The nut is connected to the support base, and the support base is connected to the upper end face of the slider. The first follower and the second follower are arranged on the support base at a distance from each other.

4. The driving mechanism according to claim 3, characterized in that, It also includes a connecting plate and a connecting piece. The connecting plate is connected to the slider. The support base includes a first sub-base and a second sub-base. The first sub-base is nested and locked to the connecting plate with the nut. The second sub-base is provided with an oblong hole. The second sub-base is rotatably connected to the connecting plate through the connecting piece and the oblong hole. The first follower is rotatably connected to the first sub-base, and the second follower is rotatably connected to the second sub-base.

5. The driving mechanism according to claim 4, characterized in that, It also includes a base and two mounting seats, the two mounting seats are spaced apart and both are connected to the base, the motor is locked on one of the mounting seats and its drive shaft extends out of the mounting seat and is connected to one end of the coupling, and one end of the lead screw is rotatably mounted on the other mounting seat and extends out of the mounting seat and is connected to the other end of the coupling.

6. The driving mechanism according to any one of claims 3 to 5, characterized in that, Both the first follower and the second follower are cam followers.

7. The driving mechanism according to any one of claims 3 to 5, characterized in that, The coupling is a diaphragm coupling.

8. The drive mechanism according to any one of claims 3 to 5, characterized in that, The motor is a closed-loop stepper motor.

9. The driving mechanism according to claim 5, characterized in that, The slide rail is mounted on the base, and the slide rail is a linear guide rail with a width greater than the diameter of the lead screw.

10. A chip testing platform, characterized in that, The device includes a base, a material tray, a connecting arm, and a driving mechanism as described in any one of claims 1-9. The material tray is rotatably connected above the base, the driving mechanism is located on one side of the material tray and connected to the base, one end of the connecting arm is rotatably connected to the material tray, and the other end of the connecting arm is limited to the limiting component.

Images