Device for detecting inner diameter of finished powder metallurgy workpiece

Abstract

The utility model provides a powder metallurgy workpiece finished product inner diameter detection device which comprises an installation plate, a side supporting plate is fixed on one side of the installation plate, a fixed pushing assembly is arranged on the side wall of the side supporting plate, one side of the fixed pushing assembly is connected with an inner detection assembly, and the inner detection assembly comprises a movable bottom plate, a buffer air cylinder, a pressure sensor, a linear bearing and a plug gauge. The movable bottom plate is fixed to one side of the fixed pushing assembly, a buffer cylinder is arranged on the side wall of the movable bottom plate, the bottom end of the buffer cylinder is connected with a pressure sensor, and the bottom end of the pressure sensor is connected with a plug gauge. According to the utility model, the powder metallurgy workpiece to be detected is placed on the supporting assembly, the surface of the plug gauge is cleaned by using the fan, the detection accuracy of the plug gauge is ensured, the pushing assembly is started to directionally push the plug gauge to be inserted into the inner hole of the workpiece for detection, and when the plug gauge encounters resistance, the detection pressure of the pressure sensor is increased; and the buffer cylinder is started to buffer the plug gauge to be continuously inserted, so that the stability and the safety of workpiece inner diameter detection are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of inner diameter detection equipment, in particular to an inner diameter detection device for a finished powder metallurgy workpiece. Background Art

[0002] In the powder metallurgy industry, inside diameter inspection is a critical step in ensuring the quality of finished parts. Powder metallurgy is a process that forms products by compacting metal powder under high pressure and then heating it to a certain temperature to create metallurgical bonding between the powder particles. Due to the high porosity of powder metallurgy products, their internal structure and dimensional accuracy are often difficult to achieve through conventional casting or forging methods. Therefore, inside diameter inspection is particularly important. Inside diameter inspection accurately measures the internal pore size of the workpiece, helping to identify defects caused by deformation and misalignment during processes such as pressing and sintering. This is particularly true in the manufacture of precision mechanical parts, automotive components, and parts used in the aerospace industry. Furthermore, inside diameter inspection effectively monitors variations in the production process, allowing for timely adjustment of process parameters to improve production efficiency and product quality consistency. Inside diameter inspection not only impacts the quality of individual parts but also serves as a crucial guarantee for the quality and profitability of the entire powder metallurgy production line.

[0003] At present, the inner diameter inspection of finished powder metallurgy workpieces is traditionally done manually using plug gauges. If the through end of the plug gauge can pass through but the stop end cannot, the product is judged to be qualified. Although fully automatic full inspection machines use plug gauges to detect the inner diameter of the workpiece, it is difficult to guarantee whether the plug gauge passes through the inner hole. As a result, the plug gauge is easily damaged by continued insertion and extrusion, which reduces the stability and safety of the inner diameter inspection.

[0004] In summary, there is a need for an inner diameter detection device with stable and safe detection operation. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a device for detecting the inner diameter of a finished powder metallurgy workpiece and a packaging box thereof, which solve the problems mentioned in the background art.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A device for detecting the inner diameter of a finished powder metallurgy workpiece comprises a mounting plate, wherein a side support plate is fixed on one side of the mounting plate, a fixed push assembly is provided on the side wall of the side support plate, an inner measuring assembly is connected to one side of the fixed push assembly, the inner measuring assembly comprises a movable base plate, a buffer cylinder, a pressure sensor, a linear bearing and a plug gauge, the movable base plate is fixed to one side of the fixed push assembly, a buffer cylinder is provided on the side wall of the movable base plate, a pressure sensor is connected to the bottom end of the buffer cylinder, a plug gauge is connected to the bottom end of the pressure sensor, a linear bearing is fixed on the side wall of the bottom of the movable base plate, the plug gauge is slidably inserted into the inside of the linear bearing, a fan is provided on the side wall of the bottom surface of the side support plate, and the air outlet of the fan is arranged along the direction of the bottom end of the plug gauge, a supporting assembly is fixed on the bottom surface of the mounting plate, and one side of the supporting assembly is arranged at the bottom of the plug gauge.

[0008] Furthermore, the fixed push assembly includes a first fixed plate, a slide rail, a positioning component, a lifting component, a second fixed plate and a motor. The slide rail is fixed to the side wall of the side support plate, the bottom surface of the slide rail is connected to the first fixed plate, the top surface of the slide rail is connected to the second fixed plate, the top surface of the second fixed plate is provided with a motor, the rotating bottom end of the motor passes through the bottom of the second fixed plate, the rotating bottom end of the motor is connected to the lifting component, one side of the lifting component is slidably connected to the inside of the slide rail, one side of the lifting component is connected to the moving bottom plate, the side wall of the slide rail is provided with a positioning component, one side of the lifting component passes through the inside of the positioning component through lifting and lowering, and the bottom of the lifting component is rotatably connected to the inside of the first fixed plate.

[0009] Furthermore, the lifting component includes a bearing seat, a screw rod, a lifting seat and a grating plate. The bearing seat is fixed to the outer wall of the slide rail, and the bearing seat is rotatably connected to the screw rod inside. The top of the screw rod is fixedly connected to the rotating bottom end of the motor, and the bottom end of the screw rod is rotatably connected to the inside of the first fixed plate. The lifting seat is threadedly sleeved on the outer wall of the screw rod, and one side of the lifting seat is slidably connected to the inside of the slide rail. The outer wall of the lifting seat is fixed with a moving bottom plate, and the side wall of the lifting seat is fixed with a grating plate. The grating plate and the positioning component are arranged on the same vertical center line, and the grating plate passes through the interior of the positioning component by the lifting seat.

[0010] Furthermore, the positioning component includes a corner mounting plate and a displacement sensor. The corner mounting plate is a bent right-angle structure. The corner mounting plate is fixed to the side wall of the slide rail. The displacement sensor is fixed to the inner wall of the right-angle structure of the corner mounting plate. A groove is provided on one side of the displacement sensor, and the groove and the grating plate are located on the same vertical center line.

[0011] Furthermore, the supporting assembly includes a fixed seat, an inserting plate and a supporting plate. The fixed seat is fixed to the bottom surface of the mounting plate. The inserting plate is slidably inserted inside the fixed seat. A supporting plate is fixed on one side of the inserting plate. A supporting groove is provided on the top surface of the supporting plate, and a through hole is provided on the bottom surface of the supporting groove.

[0012] Furthermore, the supporting assembly also includes a positioning bolt and a positioning plate. The positioning plate is fixed to the side wall of the fixing seat. The positioning bolt is connected through the inside of the positioning plate, and the bottom end of the positioning bolt is attached to the top surface of the plug-in board.

[0013] The utility model provides a device for detecting the inner diameter of a finished powder metallurgy workpiece. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The powder metallurgy workpiece to be tested is placed on the supporting assembly, and the surface of the plug gauge is cleaned with a fan to ensure the accuracy of the plug gauge detection. The push assembly is then activated to push the plug gauge into the inner hole of the workpiece for detection. When the plug gauge encounters resistance, the pressure sensor detects an increase in pressure, and the buffer cylinder is activated to buffer the plug gauge to continue insertion, ensuring the stability and safety of the workpiece inner diameter detection.

[0015] 2. The lifting component is driven by a motor to move up and down. The lifting component slides inside the slide rail to ensure the stability of the plug gauge. During the lifting process, the positioning component is used to position the lifting component to ensure the accuracy of the plug gauge's lifting and moving, thereby ensuring the accuracy and safety of the workpiece inner diameter detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 The figure shows a schematic structural diagram of the inner diameter detection device for finished powder metallurgy workpieces of the present invention;

[0018] Figure 2 Shows a schematic diagram of the connection structure of the lifting component and the inner test component of the utility model;

[0019] Figure 3 Shown Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0020] Figure 4 Shows a schematic structural diagram of the holding and placing assembly of the present utility model;

[0021] As shown in the figure: 1. Mounting plate; 2. Side support plate; 3. Push assembly; 31. First fixed plate; 32. Slide rail; 33. Positioning component; 331. Corner mounting plate; 332. Displacement sensor; 3321. Groove; 34. Lifting component; 341. Bearing seat; 342. Screw rod; 343. Lifting seat; 344. Grating plate; 35. Second fixed plate; 36. Motor; 4. Internal measurement assembly; 41. Moving base plate; 42. Buffer cylinder; 43. Pressure sensor; 44. Linear bearing; 45. Plug gauge; 5. Fan; 6. Support assembly; 61. Fixed seat; 62. Insert plate; 63. Positioning bolt; 64. Support plate; 641. Support groove; 642. Through hole; 65. Positioning plate. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention. Example 1

[0023] In order to solve the technical problems in the background technology, the following device for detecting the inner diameter of a finished powder metallurgy workpiece is provided:

[0024] Combine Figures 1-4 As shown, the inner diameter detection device of the finished powder metallurgy workpiece provided by the utility model includes a mounting plate 1, a side support plate 2 is fixed on one side of the mounting plate 1, a fixed push component 3 is provided on the side wall of the side support plate 2, and an inner measuring component 4 is connected to one side of the fixed push component 3, and the inner measuring component 4 includes a movable base plate 41, a buffer cylinder 42, a pressure sensor 43, a linear bearing 44 and a plug gauge 45, the movable base plate 41 is fixed to one side of the fixed push component 3, a buffer cylinder 42 is provided on the side wall of the movable base plate 41, the bottom end of the buffer cylinder 42 is connected to the pressure sensor 43, the bottom end of the pressure sensor 43 is connected to the plug gauge 45, a linear bearing 44 is fixed on the bottom side wall of the movable base plate 41, the plug gauge 45 is slidably inserted into the inside of the linear bearing 44, a fan 5 is provided on the bottom side wall of the side support plate 2, and the air outlet of the fan 5 is arranged along the bottom end of the plug gauge 45, a supporting component 6 is fixed on the bottom surface of the mounting plate 1, and one side of the supporting component 6 is arranged at the bottom of the plug gauge 45;

[0025] According to the above structure, the following effects can be achieved: by placing the powder metallurgy workpiece to be inspected on the supporting assembly 6, and then using the fan 5 to clean the surface of the plug gauge 45 to ensure the detection accuracy of the plug gauge 45, and then starting the pushing assembly to directionally push the plug gauge 45 into the inner hole of the workpiece for detection. When the plug gauge 45 encounters resistance, the pressure sensor 43 detects an increase in pressure, and starts the buffer cylinder 42 to buffer the plug gauge 45 to continue inserting, thereby ensuring the stability and safety of the workpiece inner diameter detection.

[0026] In this embodiment, the fixed push assembly 3 includes a first fixed plate 31, a slide rail 32, a positioning component 33, a lifting component 34, a second fixed plate 35 and a motor 36. The slide rail 32 is fixed to the side wall of the side support plate 2. The bottom surface of the slide rail 32 is connected to the first fixed plate 31, and the top surface of the slide rail 32 is connected to the second fixed plate 35. The top surface of the second fixed plate 35 is provided with a motor 36. The rotating bottom end of the motor 36 passes through the bottom of the second fixed plate 35. The rotating bottom end of the motor 36 is connected to the lifting component 34. One side of the lifting component 34 is slidably connected to the inside of the slide rail 32. One side of the lifting component 34 is connected to the movable bottom plate 41. The side wall of the slide rail 32 is provided with a positioning component 33. One side of the lifting component 34 passes through the inside of the positioning component 33 by lifting, and the bottom of the lifting component 34 is rotatably connected to the inside of the first fixed plate 31;

[0027] The lifting component 34 is driven to rise and fall by the motor 36, and the lifting component 34 slides inside the slide rail 32 to ensure the stability of the lifting of the feeler gauge 45. During the lifting process, the position of the lifting component 34 is positioned by the positioning component 33 to ensure the accuracy of the lifting and falling movement of the feeler gauge 45, thereby ensuring the accuracy and safety of the workpiece inner diameter detection.

[0028] In this embodiment, the lifting component 34 includes a bearing seat 341, a screw rod 342, a lifting seat 343 and a grating plate 344. The bearing seat 341 is fixed to the outer wall of the slide rail 32. The bearing seat 341 is rotatably connected to the screw rod 342. The top of the screw rod 342 is fixedly connected to the rotating bottom end of the motor 36. The bottom end of the screw rod 342 is rotatably connected to the inside of the first fixed plate 31. The outer wall of the screw rod 342 is threadedly sleeved with the lifting seat 343. One side of the lifting seat 343 is slidably connected to the inside of the slide rail 32. The outer wall of the lifting seat 343 is fixed with the movable bottom plate 41. The side wall of the lifting seat 343 is fixed with the grating plate 344. The grating plate 344 and the positioning component 33 are arranged on the same vertical center line. The grating plate 344 is lifted and lowered by the lifting seat 343 and passes through the interior of the positioning component 33.

[0029] By driving the screw rod 342 to move inside the bearing seat 341, the lifting seat 343 is driven to move up and down inside the slide rail 32. This lifting structure is stable and has high precision, further improving the stability of the workpiece inner diameter detection.

[0030] In this embodiment, the positioning component 33 includes a corner mounting plate 331 and a displacement sensor 332. The corner mounting plate 331 is a bent right-angle structure and is fixed to the side wall of the slide rail 32. The displacement sensor 332 is fixed to the inner wall of the right-angle structure of the corner mounting plate 331. A groove 3321 is formed on one side of the displacement sensor 332. The groove 3321 and the grating plate 344 are located on the same vertical centerline.

[0031] When performing inner diameter detection, when the grating plate 344 is moved past the displacement sensor 332, it can be determined that the lifting seat 343 drives the plug gauge 45 to reach the detection position, and then a smaller offset height is performed to continue moving to detect the inner diameter, further improving the detection accuracy. Example 2

[0032] like Figures 1-4 As shown, based on the above embodiment, this embodiment further provides the following content:

[0033] The supporting assembly 6 includes a fixed seat 61, an inserting plate 62 and a supporting plate 64. The fixed seat 61 is fixed to the bottom surface of the mounting plate 1. The inserting plate 62 is slidably inserted into the fixed seat 61. A supporting plate is fixed to one side of the inserting plate 62. A supporting groove 641 is formed on the top surface of the supporting plate 64. A through hole 642 is formed on the bottom surface of the supporting groove 641.

[0034] By placing the workpiece to be inspected inside the supporting groove 641 of the supporting plate, and then when the plug gauge 45 is inserted into the inner diameter of the inspection, the plug gauge 45 can pass through the through hole 642 to ensure the safety of the plug gauge 45.

[0035] In this embodiment, the supporting assembly 6 further includes a positioning bolt 63 and a positioning plate 65. The positioning plate 65 is fixed to the side wall of the fixing seat 61. The positioning bolt 63 is connected to the interior of the positioning plate 65. The bottom end of the positioning bolt 63 is attached to the top surface of the inserting plate 62.

[0036] After the inserting plate 62 is moved to align the workpiece with the plug gauge 45 , the positioning bolt 63 is rotated to fix the inserting plate 62 to ensure detection stability.

[0037] The working principle and use process of this utility model:

[0038] Press first Figures 1-4 Place the finished powder metallurgy workpiece in the support groove 641 of the support plate 64, then slide the insert plate 62 inside the fixed groove to align the inner hole of the workpiece with the bottom of the plug gauge 45, rotate the positioning bolt 63 to fix the position of the insert plate 62, and start the fan 5 to blow air to clean the surface of the plug gauge 45;

[0039] Then the motor 36 is started to drive the screw rod 342 to rotate. The screw rod 342 rotates inside the bearing seat 341 to drive the lifting seat 343 to descend. The lifting seat 343 slides downward inside the slide rail 32, driving the internal measurement component 4 to descend as a whole until the grating plate 344 descends and penetrates into the displacement sensor 332. Then the driving speed of the motor 36 is adjusted to slow down the rotation speed of the driving screw rod 342, so that the plug gauge 45 slowly enters the inner hole of the workpiece. Then, when the plug gauge 45 encounters an obstacle and cannot continue to be inserted into the workpiece, the pressure of the pressure sensor 43 increases. At this time, the buffer cylinder 42 is started again to buffer the movement of the plug gauge 45, so that the plug gauge 45 slides inside the linear bearing 44, and the motor 36 drive is stopped immediately to ensure the safety of the plug gauge 45 and the workpiece.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for detecting the inner diameter of a finished powder metallurgy workpiece, characterized in that: The invention comprises a mounting plate (1), wherein a side support plate (2) is fixed on one side of the mounting plate (1), a fixed push assembly (3) is provided on the side wall of the side support plate (2), an inner measuring assembly (4) is connected to one side of the fixed push assembly (3), and the inner measuring assembly (4) comprises a movable base plate (41), a buffer cylinder (42), a pressure sensor (43), a linear bearing (44) and a plug gauge (45), the movable base plate (41) is fixed on one side of the fixed push assembly (3), a buffer cylinder (42) is provided on the side wall of the movable base plate (41), and the buffer cylinder (45) is provided on the side wall of the movable base plate (41). The bottom end of (42) is connected to a pressure sensor (43), the bottom end of the pressure sensor (43) is connected to a plug gauge (45), a linear bearing (44) is fixed to the side wall of the bottom of the movable base plate (41), the plug gauge (45) is slidably inserted into the inside of the linear bearing (44), a fan (5) is provided on the side wall of the bottom surface of the side support plate (2), and the air outlet of the fan (5) is provided in the direction of the bottom end of the plug gauge (45), a supporting assembly (6) is fixed to the bottom surface of the mounting plate (1), and one side of the supporting assembly (6) is provided at the bottom of the plug gauge (45).

2. The device for detecting inner diameter of a finished powder metallurgy workpiece according to claim 1, characterized in that: The push assembly (3) includes a first fixed plate (31), a slide rail (32), a positioning component (33), a lifting component (34), a second fixed plate (35) and a motor (36). The slide rail (32) is fixed to the side wall of the side support plate (2). The bottom surface of the slide rail (32) is connected to the first fixed plate (31). The top surface of the slide rail (32) is connected to the second fixed plate (35). The top surface of the second fixed plate (35) is provided with a motor (36). The rotating bottom end of the motor (36) passes through the bottom of the second fixed plate (35). The rotating bottom end of the motor (36) is connected to the lifting component (34). One side of the lifting component (34) is slidably connected to the inside of the slide rail (32). One side of the lifting component (34) is connected to the movable bottom plate (41). The side wall of the slide rail (32) is provided with a positioning component (33). One side of the lifting component (34) passes through the inside of the positioning component (33) by lifting. The bottom of the lifting component (34) is rotatably connected to the inside of the first fixed plate (31).

3. The device for detecting inner diameter of a finished powder metallurgy workpiece according to claim 2, wherein: The lifting component (34) includes a bearing seat (341), a screw rod (342), a lifting seat (343) and a grating plate (344), wherein the bearing seat (341) is fixed to the outer wall of the slide rail (32), the bearing seat (341) is internally rotatably connected to the screw rod (342), the top end of the screw rod (342) is fixedly connected to the rotating bottom end of the motor (36), the bottom end of the screw rod (342) is rotatably connected to the inside of the first fixed plate (31), the outer wall of the screw rod (342) is threadedly sleeved with the lifting seat (343), one side of the lifting seat (343) is slidably connected to the inside of the slide rail (32), the outer wall of the lifting seat (343) is fixed with a movable bottom plate (41), the side wall of the lifting seat (343) is fixed with a grating plate (344), the grating plate (344) and the positioning component (33) are arranged on the same vertical center line, and the grating plate (344) is lifted and lowered by the lifting seat (343) and passes through the inside of the positioning component (33).

4. The device for detecting inner diameter of a finished powder metallurgy workpiece according to claim 3, wherein: The positioning component (33) includes a corner mounting plate (331) and a displacement sensor (332). The corner mounting plate (331) is a bent right-angle structure. The corner mounting plate (331) is fixed to the side wall of the slide rail (32). The displacement sensor (332) is fixed to the inner wall of the right-angle structure of the corner mounting plate (331). A groove (3321) is provided on one side of the displacement sensor (332). The groove (3321) and the grating plate (344) are located on the same vertical center line.

5. The device for detecting inner diameter of a finished powder metallurgy workpiece according to claim 1, wherein: The supporting assembly (6) includes a fixed seat (61), an inserting plate (62) and a supporting plate (64), wherein the fixed seat (61) is fixed to the bottom surface of the mounting plate (1), the inserting plate (62) is slidably inserted into the interior of the fixed seat (61), a supporting plate is fixed to one side of the inserting plate (62), a supporting groove (641) is provided on the top surface of the supporting plate (64), and a through hole (642) is provided through the bottom surface of the supporting groove (641).

6. The device for detecting inner diameter of a finished powder metallurgy workpiece according to claim 5, characterized in that: The supporting assembly (6) further comprises a positioning bolt (63) and a positioning plate (65), wherein the positioning plate (65) is fixed to the side wall of the fixing seat (61), the positioning bolt (63) is connected through the interior of the positioning plate (65), and the bottom end of the positioning bolt (63) is attached to the top surface of the inserting plate (62).

Images