Quality detection device for workpiece finished product

Abstract

The invention relates to the technical field of quality detection, and discloses a quality detection device for a workpiece finished product, which comprises a bracket, a mounting plate arranged at the bottom of the bracket, an air cylinder arranged at the top of the bracket, a detection device arranged at the bottom of the air cylinder, a detection plate arranged on the bottom surface of the bracket, and a limiting plate arranged at the top of the detection plate, the detection tool is arranged on the top of the detection plate, the clamping plates are symmetrically arranged on the two sides of the detection tool, and the clamping units are symmetrically arranged on the two sides of the detection tool. According to the device, the core operation logic of inclined insertion and spring automatic reset is adopted, the arc-shaped surface of the extrusion plate and the opening of the compression groove inclined by 15-45 degrees form dual guidance, the clamping plate can easily slide into the insertion groove, and manual accurate alignment is not needed; the technical dependence on operators is greatly reduced, new employees can quickly operate, meanwhile, the clamping time of a single tool is shortened, manual intervention links are reduced, the labor cost is reduced, and manual operation errors are avoided.

Description

Technical Field

[0001] This invention relates to the field of quality inspection technology, and in particular to a quality inspection device for finished workpieces. Background Technology

[0002] In the field of finished product quality inspection, the efficiency and accuracy of tooling clamping directly affect production efficiency and inspection reliability. However, existing clamping devices still have significant technical pain points. Most devices adopt a step-by-step operation mode of "placing the tooling first and then manually clamping it," requiring manual adjustment and fixation with the help of bolts, clips, and other components. The steps are cumbersome and rely on the professional skills of the operators. This not only results in long clamping times for a single tooling, making it difficult to adapt to the high-speed changeover requirements of mass production lines, but also easily leads to errors due to differences in human operation. In terms of positioning accuracy, existing devices lack automatic correction and force balancing mechanisms, relying on manual alignment and calibration. This easily leads to problems such as tooling tilting and unilateral offset. Poor positioning consistency during repeated clamping directly affects the accuracy of inspection data.

[0003] Meanwhile, some clamping structures are designed for specific workpieces, resulting in limited adaptability. Changing workpieces requires modifications to core components, increasing equipment investment and maintenance costs, making it difficult to meet the flexible demands of multi-variety, small-batch production. These combined problems mean that existing devices cannot match the high-efficiency inspection requirements of modern industry in terms of operational efficiency, positioning accuracy, and versatility. There is an urgent need for a new clamping solution that integrates rapid clamping, precise positioning, and wide adaptability. Summary of the Invention

[0004] Given the problems of existing technologies, such as the need for step-by-step clamping operations, cumbersome processes, inability to achieve rapid clamping, lack of automatic correction mechanisms for clamping and positioning, insufficient accuracy and poor consistency, limited adaptability, high dependence on manual skills, and susceptibility to operational errors affecting the reliability of detection, a quality inspection device for finished workpieces is proposed.

[0005] Its purpose is to: enable rapid tooling clamping and simplify the operation process; improve positioning accuracy and consistency and reduce detection errors; enhance versatility and adapt to workpieces of various specifications; and reduce reliance on manual skills and maintenance costs.

[0006] The technical solution of the present invention is a quality inspection component for finished workpieces, including a bracket, a mounting plate disposed at the bottom of the bracket, a cylinder disposed at the top of the bracket, a detection component disposed at the bottom of the cylinder, a detection plate disposed on the surface of the mounting plate, a limiting plate disposed on one side of the detection plate, a detection fixture disposed at the top of the detection plate, clamping plates symmetrically disposed on both sides of the detection fixture, and clamping units symmetrically disposed on both sides of the detection fixture. The clamping unit includes a pressing unit disposed on the detection plate and a fixing unit disposed at the bottom of the pressing unit; The pressing unit is used to keep the detection work horizontal, and the fixing unit is used to fix the detection fixture. The pressing unit includes a sliding groove on the top of the mounting plate, a pressing spring in the sliding groove, a sliding plate on one side of the pressing spring, a moving block on the top of the sliding plate, and a pressing component in the moving block. The pressing component is used to press the tooling.

[0007] Furthermore, the extrusion assembly includes an insertion slot located in the center of the moving block, compression slots respectively opened on both sides of the insertion slot, extrusion plates respectively disposed in the compression slots, and compression springs respectively disposed in the compression slots. One end of the compression spring is fixedly connected to the extrusion plate, and one side of the extrusion plate is arc-shaped.

[0008] Furthermore, the fixing unit includes a sliding hole opened in the middle of one side of the moving block, a connecting rod disposed in the sliding hole, a pressing plate fixedly connected to the top and bottom of the connecting rod, a snap-fit ​​block disposed at the bottom of the connecting rod, a fixing block disposed at the top of the detection plate, and a plurality of snap-fit ​​holes opened in a linear array on the fixing block, the snap-fit ​​blocks abutting against the snap-fit ​​holes.

[0009] Furthermore, the spring constant of the compression spring located in the top compression groove is less than the spring constant of the compression spring located in the bottom compression groove.

[0010] Furthermore, one side of the compression groove has an arc-shaped symmetrical opening, while the other side is horizontal.

[0011] Furthermore, the inclination angle of the side of the compression groove that has an arc-shaped opening is between 15 degrees and 45 degrees.

[0012] Furthermore, the two extrusion plates are provided with a sliding assembly, which includes an extrusion groove formed on one side of the extrusion plates that are close to each other, a plurality of fixed rods arranged in a linear array in the extrusion groove, and a sliding roller arranged on the fixed rod.

[0013] Furthermore, one side of the fixing block is pointed, and the width of the snap-fit ​​block matches the width of the snap-fit ​​hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The device employs a core operating logic of tilted insertion and automatic spring reset, coupled with multiple structural optimizations to achieve extremely simple operation. The curved surface of the extrusion plate and the 15-45 degree inclined compression groove opening form a dual guide, and the sliding roller inside the extrusion plate reduces friction, allowing the clamping plate to easily slide into the insertion groove without the need for precise manual alignment or forceful impact. The fixing unit achieves linkage between the extrusion plate and the clamping plate through a connecting rod, requiring only a "push-release" action to complete clamping and locking, without the need for tools or complex steps. This design significantly reduces reliance on operator skills, allowing new employees to quickly learn the equipment, while shortening the clamping time of a single tool and reducing manual intervention, thus lowering labor costs and avoiding human error.

[0015] 2. The device achieves full-dimensional adaptability through modular and flexible design. The inspection tooling can be flexibly replaced according to different workpieces. The fixing block adopts a detachable structure, and with its surface array of snap-fit ​​holes, it can accurately match clamping plates of different thicknesses. The gradient setting of the stiffness coefficient of the top and bottom compression springs allows the extrusion plate to flexibly adjust the amount of expansion and contraction according to the thickness of the clamping plate, further expanding the adaptability range. There is no need to customize special equipment for a single workpiece. Simply by changing the tooling or fixing block, it can adapt to various workpieces from conventional small parts to irregularly shaped large parts, significantly reducing tooling investment and maintenance costs in multi-specification production scenarios and improving the versatility of the equipment.

[0016] 3. When the downward spring returns to its original position, it drives the extrusion assembly to automatically correct the tooling posture. The balanced elasticity of the compression springs on both sides ensures symmetrical force on the clamping plate, enabling the tooling to quickly achieve horizontal centering and avoid unilateral offset and repeated clamping deviations. The locking block and locking hole of the fixing unit form a rigid limit, which, together with the elastic pressure of the bottom compression spring, constructs a dual fixing structure at the top, consisting of "mechanical locking at the top and flexible clamping at the top," preventing the tooling from loosening or shifting during the inspection process. At the same time, the surface contact design between the extrusion plate and the clamping plate disperses pressure, and the elastic buffer structure absorbs the installation impact force, preventing clamping plate deformation and workpiece scratches. While ensuring positioning consistency and inspection accuracy, it also protects the structural integrity of the tooling and workpiece. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a three-dimensional structural diagram of the detection tooling of the present invention; Figure 3 This is a three-dimensional structural diagram of the mounting plate of the present invention after the detection tooling has been removed; Figure 4 This is an exploded structural diagram of the pressing unit of the present invention; Figure 5 This is a schematic diagram of the overall structure of the pressing unit and the clamping unit of the present invention; Figure 6This is a schematic diagram of the overall structure of the extrusion assembly of the present invention; Figure 7 This is a three-dimensional structural diagram of the fixing unit of the present invention; Figure 8 This is a schematic diagram of the overall structure of the detection fixture of the present invention after the card plate is installed; Figure 9 This is a three-dimensional structural diagram of the sliding component of the present invention.

[0018] In the picture: 1. Bracket; 11. Mounting plate; 12. Cylinder; 13. Detection assembly; 14. Detection plate; 15. Limiting plate; 16. Detection fixture; 2. Pressing unit; 21. Sliding groove; 22. Pressing spring; 23. Sliding plate; 24. Moving block; 3. Extrusion assembly; 31. Insertion groove; 32. Compression groove; 33. Extrusion plate; 34. Compression spring; 4. Fixing unit; 41. Sliding hole; 42. Connecting rod; 43. Snap-fit ​​block; 44. Fixing block; 45. Snap-fit ​​hole; 5. Sliding assembly; 51. Extrusion groove; 52. Fixing rod; 53. Sliding roller. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-9 This first embodiment of the invention provides a quality inspection device for finished workpieces, including a bracket 1, a mounting plate 11 mounted on the bottom of the bracket 1, a cylinder 12 mounted on the top of the bracket 1, a detection assembly 13 disposed at the bottom of the cylinder 12, a detection plate 14 mounted on the surface of the mounting plate 11, a limiting plate 15 mounted on one side of the detection plate 14, a detection fixture 16 mounted on the top of the detection plate 14, clamping plates symmetrically fixedly connected to both sides of the detection fixture 16, and clamping units symmetrically disposed on both sides of the detection fixture 16; clamping... The unit includes a pressing unit 2 disposed on the detection plate 14 and a fixing unit 4 disposed at the bottom of the pressing unit 2; the pressing unit 2 is used to keep the detection work horizontal, and the fixing unit 4 is used to fix the detection fixture 16; the pressing unit 2 includes a sliding groove 21 opened on the top of the mounting plate 11, a pressing spring 22 fixedly connected in the sliding groove 21, a sliding plate 23 fixedly connected to one side of the pressing spring 22, a moving block 24 fixedly connected to the top of the sliding plate 23, and a pressing component 3 disposed in the moving block 24, the pressing component 3 being used to press the fixture.

[0021] Specifically, during inspection, different inspection fixtures 16 and inspection components 13 are used for different workpieces. When inspecting a certain type of workpiece, a fixed limiting fixture adapted to this type of workpiece is first installed. During installation, the workpiece is inserted into the clamping unit from the front side of the diameter by holding both sides with both hands. During the inclined insertion process, the fixture is pushed forward at an angle, so that the limiting on both sides of the workpiece places the workpiece on the matching inspection fixture 16. The clamping plates on both sides are inserted into the pressing component 3, and the inspection fixture 16 is pushed at an angle. At this time, the sliding plate 23 and the moving block 24 are pushed, which stretches the pressure spring 22. When the inspection fixture 16 reaches the position, the hands are released from the grip of the inspection workpiece. At this time, the pressure spring 22 returns to its original position, which drives the pressing components 3 on both sides inside to press the clamping plates, so that the inspection fixture 16 is horizontal and moves to the middle of the inspection fixture 16. The clamping plates on both sides of the fixture are fixed by the fixing unit 4.

[0022] This device employs an inclined insertion and automatic spring reset installation method, eliminating the need for complex adjustments or specialized skills, thus shortening clamping time. It reduces manual intervention, lowers reliance on operator skills, avoids human error, and is easy to operate, reducing labor costs. The corresponding inspection fixture 16 can be changed according to different workpieces, eliminating the need for customized equipment for single workpieces, reducing the investment and maintenance costs of fixtures for multi-specification production. It has wide versatility and is suitable for various types of workpieces. When the downward spring 22 resets, it drives the extrusion assembly 3 to automatically correct the fixture position, ensuring the fixture is horizontal and centered, resulting in high positioning consistency. This avoids positioning deviations caused by repeated clamping, leading to higher accuracy of inspection data. Reference Figures 4-6 The extrusion assembly 3 includes an insertion groove 31 located in the middle of the moving block 24, compression grooves 32 located on both sides of the insertion groove 31, extrusion plates 33 slidably connected in the compression grooves 32, and compression springs 34 fixedly connected in the compression grooves 32. One end of the compression spring 34 is fixedly connected to the extrusion plate 33, and one side of the extrusion plate 33 is arc-shaped.

[0023] Specifically, when the clamping plate is inserted into the insertion slot 31 at a certain tilt angle, the pressing plates 33 on both sides retract into the compression slot 32. At this time, during the process of pushing the detection fixture 16, the moving block 24 will be pushed forward, the pressure spring 22 will be stretched, and the compression spring 34 will be compressed. When the detection fixture 16 is in place, the hands release the grip on the detection fixture 16. Under the reset force of the pressure spring 22, one side of the two pressing plates 33 will press the clamping plate, so that the clamping plate changes from an inclined state to a horizontal state that fits the surface of the detection plate 14, which facilitates the installation and detection of the workpiece. The arc-shaped design on one side of the pressing plate 33 facilitates the insertion of the clamping plate.

[0024] One side of the extrusion plate 33 is arc-shaped. When the clamping plate is inserted at an angle, the arc-shaped surface guides the clamping plate to automatically slide into the insertion slot 31, avoiding jamming or sticking caused by the right-angle edge. At the same time, when the clamping plate is inserted, it will squeeze the two extrusion plates 33 on both sides to retract into the compression slot 32 (the compression springs 34 compress synchronously). There is no need for manual alignment or forceful impact. The operation of tilting insertion is smoother, greatly reducing the manual labor cost during clamping. Even heavy tooling can be easily installed with less insertion resistance and less effort. After the clamping plate is inserted at an angle, the elastic force of the compression springs 34 on both sides always acts on the extrusion plate 33. With the reset pull of the downward spring 22: on the one hand, the extrusion plate 33 continuously adheres to the surface of the clamping plate through elastic force, automatically correcting the tilt angle of the clamping plate, and finally making the inspection tooling 16 smoothly transition from the tilted state to the horizontal state; on the other hand, the elastic force of the compression springs 34 on both sides can ensure that the clamping plate is subjected to symmetrical force in the insertion slot 31, avoiding unilateral offset, further improving the consistency of the tooling's centering positioning, and providing a precise benchmark for subsequent inspection. The continuous elastic pressure provided by the compression spring 34 allows the extrusion plate 33 and the clamping plate to form a flexible clamping, which ensures that the clamping plate does not loosen or shift during the testing process (avoiding testing errors caused by tooling shaking) and also buffers the impact force during tooling installation. At the same time, the extrusion plate 33 and the clamping plate are in surface contact (rather than point contact), which disperses the clamping pressure and avoids deformation and scratches of the clamping plate caused by excessive local pressure, thus protecting the appearance and structural integrity of the tooling and the workpiece.

[0025] Example 2, refer to Figures 1-7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the fixing unit 4 includes a sliding hole 41 opened in the middle of one side of the moving block 24, a connecting rod 42 slidably connected in the sliding hole 41, a pressing plate 33 fixedly connected to the top and bottom of the connecting rod 42, a snap-fit ​​block 43 fixedly connected to the bottom of the connecting rod 42, a fixing block 44 detachably connected to the top of the detection plate 14, and a plurality of snap-fit ​​holes 45 opened in a linear array on the fixing block 44, with the snap-fit ​​block 43 abutting in the snap-fit ​​hole 45.

[0026] Specifically, in the initial state, the snap-fit ​​block 43 is snapped into the snap-fit ​​hole 45. At this time, when the detection fixture 16 is inserted, the moving block 24 is pushed forward first. When the snap-fit ​​block 43 is disengaged from the snap-fit ​​hole 45, the bottom pressing plate 33 is disengaged from the limit, causing the compression spring 34 located at the bottom of the bottom pressing plate 33 to bounce upward. When one end of the testing fixture 16 is engaged, the testing fixture 16 is released. Under the reset action of the pressure spring 22, the two pressing plates 33 can quickly keep the clamping plates on both sides of the testing fixture 16 horizontal. When the pressure spring 22 resets, the clamping block 43 enters into a certain clamping hole 45. The clamping block 43 and the clamping hole 45 abut against each other, fixing and limiting the pressure plate 33 at the bottom. This causes the bottom pressure plate 33 to press against the clamping plate, and the clamping plate is pressed against the bottom pressure plate 33 and the bottom of the top insertion slot 31, thereby achieving quick fixation of the testing fixture 16 after insertion. The fixing block 44 can be disassembled and replaced to accommodate more testing fixtures 16. With the fixing block 44 of this size, clamping plates of different thicknesses can fit the clamping holes 45 at different positions, thereby meeting the fixation requirements of different testing fixtures 16.

[0027] The fixing unit 4 of this quality inspection device uses a connecting rod 42 to link the extrusion plate 33 and the clamping plate. When the tooling is pushed, the clamping block 43 disengages from the clamping hole 45 and automatically engages and locks when in place. Clamping can be completed simply by "pushing and releasing", without tools or complicated steps, which can reduce reliance on manual skills and reduce operational errors. The array of clamping holes 45 of the fixing block 44 can match clamping plates of different thicknesses, and the fixing block 44 is detachable and replaceable. It can be adapted to conventional parts to large irregular parts without modifying the core components, and has extremely strong versatility. The rigid limit of the clamping block 43 and the clamping hole 45, combined with the elastic pressure of the compression spring 34, combines rigidity and flexibility to prevent tooling loosening and deviation, and protect the clamping block 43 and the workpiece from damage. At the same time, its core is a mechanical part with no electronic components, resulting in a low failure rate and low maintenance cost. After integration, its compact size can be embedded in the existing inspection station, and the moving block 24 can be pushed to quickly change the shape, adapting to the needs of mass production lines.

[0028] Reference Figure 7 The spring constant of the compression spring 34 located in the top compression groove 32 is smaller than that of the compression spring 34 located in the bottom compression groove 32.

[0029] Specifically, this arrangement allows the bottom compression spring 34 to push the top compression spring 34 to compress after the inspection fixture 16 is placed, so that the bottom pressing plate 33 can push the card plate against the bottom of the insertion slot 31. Combined with the snap-fit ​​action of the snap-fit ​​block 43 and the snap-fit ​​hole 45, the card plate is fixed. Firstly, the stronger elasticity at the bottom actively compresses the top spring, allowing the bottom pressing plate 33 to precisely press the clamping plate against the bottom of the insertion slot 31. This, combined with the rigid locking of the clamping block 43 and the clamping hole 45, forms a dual reinforcement of "elastic pressure and mechanical limit," preventing tooling loosening during inspection and significantly improving stability. Secondly, the weaker elasticity at the top reduces resistance during clamping plate insertion. Combined with the arc design of the pressing plate 33, it is easier to operate. Meanwhile, the strong elasticity at the bottom automatically corrects the clamping plate's posture, ensuring that leveling and clamping are completed simultaneously, improving clamping efficiency. Thirdly, this elasticity gradient can adapt to clamping plates of different thicknesses. The extension and retraction of the bottom spring can be flexibly adjusted according to the clamping plate thickness. Combined with the array of clamping holes 45, it further expands the adaptability range, and no manual adjustment is required throughout the process, continuing the convenience of zero-tool operation. At the same time, the combination of strong elasticity at the bottom and weak buffer at the top ensures sufficient clamping force while avoiding rigid impact damage to the clamping plate and workpiece, balancing stability and protection.

[0030] Reference Figures 5-7 The insertion slot 31 has an arc-shaped symmetrical opening on one side and a horizontal opening on the other side.

[0031] Specifically, this design facilitates the insertion and removal of the card plate, and makes it easy to snap-fit ​​and install the testing fixture 16. The horizontal shape on one side is used to snap-fit ​​and fix the card plate.

[0032] Reference Figures 5-7 The angle of inclination of the side of the compression groove 32 that is open in an arc shape is between 15 degrees and 45 degrees.

[0033] Specifically, this design offers several advantages. First, the angle precisely matches the tilting insertion trajectory of the card, forming a "dual guide" with the arc shape of the extrusion plate 33. This avoids a sudden increase in insertion resistance and card jamming due to an excessively small angle, while also preventing guide failure and card slippage due to an excessively large angle, resulting in smoother and less strenuous insertion. Second, the angle range is matched to the spring force gradient. The 15-45 degree tilt direction ensures that the force direction of the compression spring 34 better aligns with the card insertion path. The top low-stress spring can easily contract with the angle guidance, while the bottom high-stress spring can effectively transmit elastic force through the angle, pushing the card to smoothly level and press it firmly against the bottom of the insertion slot 31, avoiding wasted elastic force or uneven force due to angle deviation. Third, this angle disperses the impact force during insertion. The tilted surface of the arc-shaped opening converts the pushing force of the card into the smooth contraction force of the extrusion plate 33, reducing local stress concentration. Combined with the arc-shaped surface of the extrusion plate 33, this further reduces wear on the card and extrusion assembly 3, improving structural durability. In addition, the 15-45 degree range provides a margin of error for operation. Even if the operator's insertion angle is slightly off, the inclined surface of the opening can still guide the card plate to accurately enter the insertion slot 31 without strict alignment, thus continuing the device's advantages of zero tools and low threshold operation.

[0034] Reference Figure 9 The two extrusion plates 33 are provided with a sliding assembly 5. The sliding assembly 5 includes an extrusion groove 51 opened on one side of the extrusion plates 33 that are close to each other, a number of fixed rods 52 in a linear array fixedly connected in the extrusion groove 51, and a sliding roller 53 rotatably connected to the fixed rods 52.

[0035] Specifically, when the pressure spring 22 is reset, the sliding roller 53 rotates on the surface of the clamping plate, which can reduce the friction when the moving block 24 is reset, making it easier to quickly insert the testing fixture 16 and quickly install it into place, thus improving the installation and fixing efficiency of the testing fixture 16.

[0036] Reference Figure 7 One side of the fixing block 44 is pointed, and the width of the snap-fit ​​block 43 matches the width of the snap-fit ​​hole 45.

[0037] Specifically, the pointed shape facilitates the insertion and disengagement of the snap-fit ​​block 43, and the appropriate width facilitates stable fixation of the testing fixture 16. The remaining structure is the same as that in Embodiment 1.

[0038] Based on embodiments 1-2, the working principle of this invention is as follows: During clamping, the fixture is held with both hands and inserted into the symmetrical clamping unit from the front at an angle. The arc-shaped extrusion plate 33 of the extrusion assembly 3 and the opening of the compression groove 32 at a 15-45 degree angle form a double guide. With the friction reduction of the sliding roller 53 inside the extrusion plate 33, the clamping plate is easily pushed into the insertion groove 31, pushing the moving block 24 to stretch the downward pressure spring 22. At the same time, the locking block 43 disengages from the locking hole 45 of the fixed block 44, and the bottom compression spring 34 releases its elastic force. After the fixture is in place, the hands are released, the downward pressure spring 22 resets, and the moving block 24 moves back. The compression spring 34 at the top, with a smaller stiffness coefficient, easily retracts, and the compression spring 34 at the bottom pushes the extrusion plate 33 to correct the clamping plate to a horizontal and centered state. The locking block 43 automatically embeds into the corresponding array of locking holes 45 of the fixed block 44, forming a mechanical lock and elastic pressure fixation with the bottom extrusion plate 33, adapting to clamping plates of different thicknesses. The entire process requires no tools. It achieves rapid clamping, precise positioning, and stable holding through spring force and mechanical linkage, balancing versatility and detection accuracy. Unlike traditional clamping after placement, it is quick, simple, and convenient to operate.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A quality inspection device for finished workpieces, comprising a support (1) and a mounting plate (11) disposed at the bottom of the support (1), characterized in that: It also includes a cylinder (12) set on the top of the bracket (1), a detection component (13) set on the bottom of the cylinder (12), a detection plate (14) set on the surface of the mounting plate (11), a limiting plate (15) set on one side of the detection plate (14), a detection fixture (16) set on the top of the detection plate (14), a clamping plate symmetrically set on both sides of the detection fixture (16), and a clamping unit symmetrically set on both sides of the detection fixture (16). The clamping unit includes a pressing unit (2) disposed on the detection plate (14) and a fixing unit (4) disposed at the bottom of the pressing unit (2); The pressing unit (2) is used to keep the detection work horizontal, and the fixing unit (4) is used to fix the detection fixture (16). The pressing unit (2) includes a sliding groove (21) opened on the top of the mounting plate (11), a pressing spring (22) disposed in the sliding groove (21), a sliding plate (23) disposed on one side of the pressing spring (22), a moving block (24) disposed on the top of the sliding plate (23), and a pressing component (3) disposed in the moving block (24). The pressing component (3) is used to press the tooling.

2. The quality inspection device for finished workpieces according to claim 1, characterized in that: The extrusion assembly (3) includes an insertion groove (31) located in the middle of the moving block (24), compression grooves (32) respectively opened on both sides of the insertion groove (31), extrusion plates (33) respectively located in the compression grooves (32), and compression springs (34) respectively located in the compression grooves (32). One end of the compression spring (34) is fixedly connected to the extrusion plate (33), and one side of the extrusion plate (33) is arc-shaped.

3. The quality inspection device for finished workpieces according to claim 2, characterized in that: The fixing unit (4) includes a sliding hole (41) opened in the middle of one side of the moving block (24), a connecting rod (42) set in the sliding hole (41), a pressing plate (33) fixedly connected to the top and bottom of the connecting rod (42), a snap-fit ​​block (43) set at the bottom of the connecting rod (42), a fixing block (44) set at the top of the detection plate (14), and a plurality of snap-fit ​​holes (45) opened in a linear array on the fixing block (44), with the snap-fit ​​block (43) abutting in the snap-fit ​​hole (45).

4. The quality inspection device for finished workpieces according to claim 3, characterized in that: The spring constant of the compression spring (34) located in the top compression groove (32) is smaller than that of the compression spring (34) located in the bottom compression groove (32).

5. The quality inspection device for finished workpieces according to claim 4, characterized in that: The compression groove (32) has an arc-shaped symmetrical opening on one side and a horizontal opening on the other side.

6. The quality inspection device for finished workpieces according to claim 5, characterized in that: The inclination angle of the side of the compression groove (32) that is in the shape of an arc opening is 15 degrees to 45 degrees.

7. The quality inspection device for finished workpieces according to claim 6, characterized in that: The two extrusion plates (33) are provided with a sliding assembly (5). The sliding assembly (5) includes an extrusion groove (51) opened on one side of the extrusion plates (33) close to each other, a plurality of fixed rods (52) arranged in a linear array in the extrusion groove (51), and a sliding roller (53) arranged on the fixed rods (52).

8. The quality inspection device for finished workpieces according to claim 3, characterized in that: One side of the fixing block (44) is pointed, and the width of the snap-fit ​​block (43) matches the width of the snap-fit ​​hole (45).

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