Powder metallurgy part form and location tolerance detection device

Abstract

The utility model relates to the field of powder metallurgy part detection devices, and discloses a powder metallurgy part form and location tolerance detection device. The device comprises a rotating platform, and an automatic feeding mechanism, a measuring instrument, a first pneumatic discharging mechanism and a second pneumatic discharging mechanism which are arranged on the rotating platform at intervals in the circumferential direction; the rotating platform comprises a base and a rotating disc, a plurality of driving assemblies are arranged on the rotating disc at intervals, the driving assemblies are suitable for installing measured parts and driving the measured parts to rotate so that the measuring instrument can measure the form and location tolerance of the outer diameter, and the automatic feeding mechanism is suitable for placing the measured parts on the corresponding driving assemblies; the first pneumatic discharging mechanism is suitable for blowing off unqualified products after measurement from the corresponding driving assemblies, and the second pneumatic discharging mechanism is suitable for blowing off qualified products after measurement from the corresponding driving assemblies. According to the utility model, the detection efficiency is improved; the blanking of the tested part is smooth; and the convenience of clamping, rotating, detecting and feeding of the parts is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy parts detection devices, in particular to a powder metallurgy parts form and position tolerance detection device. Background Art

[0002] Powder metallurgy parts are metal parts made by forming and sintering metal powder or using metal powder as raw material. The connector in the automobile cooling system is made by powder metallurgy technology. The component includes a circular ring and a plurality of cantilever arc plates circumferentially spaced on the circular ring, wherein the inner arc surface and the outer arc surface of the cantilever arc plate are concentric with the circular ring, the inner arc surface of the cantilever arc plate is flush with the inner wall of the circular ring, but the outer diameter of the outer arc surface of the cantilever arc plate is smaller than the outer diameter of the circular ring, that is, the cantilever arc plate is spaced apart from the outer wall of the circular ring.

[0003] After the above parts are finished products, the detection device will be used to detect the shape and position tolerances of the outer arc surfaces of multiple cantilever arc plates. During the detection, the staff will first put the detected part on the claws of the three-jaw chuck, and then adjust the claws to make it in close contact with the inner wall of the part to limit the part, and then adjust the position of the micrometer to make the probe abut the outer wall of the cantilever arc plate, and finally manually rotate the three-jaw chuck to drive the part to rotate to realize the detection of the shape and position tolerances of the outer walls of multiple cantilever arc plates. The entire detection process not only requires manual installation and disassembly of the parts to be tested, but also requires adjustment of the position of the three-jaw chuck and the micrometer. When the number of parts to be tested is large, the above process will result in low detection efficiency. Utility Model Content

[0004] In order to solve at least one aspect of the above problems, the utility model provides a powder metallurgy parts shape and position tolerance detection device, including a rotating platform, an automatic feeding mechanism, a measuring instrument, a first pneumatic feeding mechanism and a second pneumatic feeding mechanism;

[0005] The rotating platform comprises a base and a turntable, wherein the turntable is provided with a loading station, an inspection station, a defective product unloading station and a qualified product unloading station in a circumferentially spaced order, and a driving assembly is provided on the turntable, wherein the driving assembly is suitable for mounting the measured parts and driving the measured parts to rotate, and the driving assembly rotates synchronously with the turntable, and the driving assembly passes through the loading station, the inspection station, the defective product unloading station and the qualified product unloading station in sequence, and a plurality of driving assemblies are provided at intervals in a circumferential direction on the turntable, and when any one of the driving assemblies is located at the loading station, one of the driving assemblies is stationed at the defective product unloading station and the qualified product unloading station;

[0006] The automatic feeding mechanism is arranged at the feeding station to place the tested parts on the driving assembly that stays at the feeding station, the measuring instrument is connected to the base and is located at the detection station to detect the shape and position tolerance of the parts, the first pneumatic unloading mechanism is located at the defective product unloading station and is suitable for blowing unqualified products off from the corresponding driving assembly, and the second pneumatic unloading mechanism is located at the qualified product unloading station and is suitable for blowing qualified products off from the corresponding driving assembly;

[0007] The first pneumatic unloading mechanism includes a guide box and an air pipe, the guide box is located below the measured part on the side close to the rotation axis of the turntable, one end of the air pipe is connected to the inside of the guide box, and the other end is connected to the air source, and an arc-shaped air outlet is provided on the top of the guide box. The gas in the air pipe is discharged from the arc-shaped air outlet and blows the measured part off the corresponding driving component. A driving cylinder is provided on the base, and the driving cylinder is connected to the measuring instrument. The driving cylinder is used to drive the measuring instrument to approach the center of the turntable to contact the measured part. A display is provided on the base, and the display is electrically connected to the measuring instrument and is suitable for displaying measurement values.

[0008] Optionally, a charging power supply is provided in the middle of the turntable, and the driving assembly is electrically connected to the charging power supply.

[0009] Optionally, the drive assembly is an electric rotating jaw.

[0010] Optionally, a supporting plate is provided on the side of the driving assembly jaws that are away from each other, the measured part is sleeved on the driving assembly jaws, and the bottom of the measured part abuts against the supporting plate.

[0011] Optionally, the distance from the top of the support plate to the top of the driving assembly clamp is smaller than the axial length of the ring in the measured part.

[0012] Optionally, the first pneumatic unloading mechanism further comprises an unloading guide plate, which is tiltedly arranged on the base, and the tested parts blown off from the driving assembly through the guide box will fall onto the unloading guide plate.

[0013] Optionally, the automatic loading mechanism includes a conveyor belt, an XYZ module, a clamping cylinder and a module bracket, the module bracket is fixedly mounted on the base, the clamping cylinder is mounted on the XYZ module and is suitable for clamping parts on the conveyor belt, and the XYZ module is mounted on the module bracket and is suitable for driving the clamping cylinder to move the parts to the loading station and place the parts on the driving assembly of the loading station.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are:

[0015] 1. It can realize automatic loading and unloading and measurement of form and position tolerance. When the tested parts are placed on the drive assembly at the loading station, the measuring instrument at the inspection station has already inspected the tested parts at the inspection station. At the same time, qualified products are also unloaded at the qualified product unloading station, which improves the inspection efficiency;

[0016] 2. The arc-shaped air outlet can blow up the part to be tested closer to the center of the turntable, so that the part to be tested can be turned from the drive component to the unloading guide plate under the great air pressure on one side, and the unloading process is smoother;

[0017] 3. When the part to be tested is placed on the driving assembly, the supporting plate on the driving assembly just supports the part so that it can be placed on the clamping jaws. Then the clamping jaws are opened and the inner walls abut against it to limit its position, which improves the convenience of placing the part to be tested;

[0018] 4. The distance from the top of the support plate to the top of the clamping jaws on the driving assembly is short, which makes it easier for the tested parts to flip off the driving assembly after being blown by unilateral air pressure during the unloading process, further improving the smoothness of the unloading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A part drawing for which the form and position tolerances need to be detected by a detection device for the utility model;

[0020] Figure 2 This is an overall structural diagram of the detection device in the embodiment of the utility model;

[0021] Figure 3 An exploded view of the rotating platform, the driving assembly and the measuring instrument in the embodiment of the utility model;

[0022] Figure 4 This is a structural diagram of a driving component in an embodiment of the utility model;

[0023] Figure 5 It is a structural diagram of the rotating platform, the first pneumatic material discharging mechanism and the second pneumatic material discharging mechanism in the embodiment of the utility model;

[0024] Figure 6 It is a structural diagram of the first pneumatic feeding mechanism in the embodiment of the utility model.

[0025] Explanation of the accompanying drawings: 1. rotating platform; 11. base; 111. driving cylinder; 112. extension bracket; 113. display; 12. turntable; 121. rotating hole; 122. threading hole; 13. driving assembly; 14. driving motor; 15. supporting plate; 16. charging power supply; 2. automatic loading mechanism; 21. conveyor belt; 22. XYZ module; 23. module bracket; 3. measuring instrument; 4. first pneumatic unloading mechanism; 41. guide box; 411. arc-shaped air outlet; 42. air pipe; 43. unloading guide plate; 44. air pump; 5. second pneumatic unloading mechanism. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0029] Reference Figure 1 The product in the figure is a part manufactured by powder metallurgy technology. The part includes a circular ring and a cantilever arc plate. The outer wall and the inner part of the cantilever arc plate are provided with arc surfaces concentric with the circular ring. There are multiple cantilever arc plates, and the multiple cantilever arc plates are integrally formed on the same side of the circular ring. The multiple cantilever arc plates are evenly spaced circumferentially arranged on the circular ring. The main purpose is to detect the shape and position tolerances of the outer walls of the multiple cantilever arc plates.

[0030] The following is combined with Figure 2-6 This application is described in further detail.

[0031] The utility model provides a device for detecting the shape and position tolerance of a powder metallurgy part. Figure 2 and Figure 3The device for detecting the geometric tolerance of powder metallurgy parts comprises a rotating platform 1, an automatic feeding mechanism 2, a measuring instrument 3, a first pneumatic feeding mechanism 4 and a second pneumatic feeding mechanism 5. The rotating platform 1 comprises a base 11 and a turntable 12, on which a plurality of driving assemblies 13 are arranged at intervals, the driving assemblies 13 are suitable for mounting the measured parts and driving the measured parts to rotate so that the measuring instrument 3 can measure the geometric tolerance of the outer diameter, the automatic feeding mechanism 2 is suitable for placing the measured parts on the corresponding driving assemblies 13, the first pneumatic feeding mechanism 4 is suitable for blowing off the unqualified products from the corresponding driving assemblies 13 after measurement, and the second pneumatic feeding mechanism 5 is suitable for blowing off the qualified products from the corresponding driving assemblies 13 after measurement.

[0032] The turntable 12 is rotatably mounted on the top of the base 11, and the turntable 12 rotates intermittently. The turntable 12 is provided with a loading station, a detection station, a defective product unloading station, and a qualified product unloading station at intervals in the circumference. The automatic loading mechanism 2 is provided at the loading station to place the measured parts on the driving assembly 13 at the loading station, the measuring instrument 3 is connected to the base 11 and is located at the detection station to detect the shape and position tolerance of the parts, the first pneumatic unloading mechanism 4 is located at the defective product unloading station, and the second pneumatic unloading mechanism 5 is located at the qualified product unloading station.

[0033] Reference Figure 2 and Figure 3 , the drive assembly 13 rotates synchronously with the turntable 12, and any drive assembly 13 will pass through the loading station, the inspection station, the defective product unloading station and the qualified product unloading station in sequence as the turntable 12 rotates. When any drive assembly 13 is located at the loading station, there is a drive assembly 13 at the defective product unloading station and the qualified product unloading station, and then each time the turntable 12 rotates once, different stations will be able to simultaneously realize the operations of loading, inspection and unloading.

[0034] Specifically, a driving motor 14 is fixedly provided on the top of the base 11, and the turntable 12 is connected to the motor shaft of the motor, so that the driving motor 14 can drive the turntable 12 to rotate. The driving assembly 13 is an electric rotating clamp (which is the prior art), that is, the driving assembly 13 includes a motor body, a rotating seat connected to the motor body, and an electric clamp installed on the rotating seat. The motor body can drive the rotating seat to rotate to drive the electric clamp to rotate. The electric clamp can clamp or release. The motor body and the electric clamp share a cable, which is suitable for the motor body.

[0035] The top of the turntable 12 is provided with a rotation hole 121 that passes through the turntable 12. The motor body is fixed to the bottom of the turntable 12 by bolts. The rotating seat and the electric clamp are inserted into the rotation hole 121 and can rotate in the rotation hole 121. The clamping jaws on the electric clamp protrude from the rotation hole 121 and are located above the turntable 12. The annular ring of the part to be measured is sleeved on the clamping jaws of the electric clamp. When the clamping jaws on the electric clamp are opened, they abut against the inner wall of the annular ring to support and limit the internal position of the part to be measured.

[0036] Combination Figure 2 Reference Figure 3 and Figure 4 The side of the multiple jaws in the electric clamp that are away from each other is fixed with a supporting plate 15. After the ring is sleeved on the multiple jaws, the side of the ring away from the cantilever arc plate abuts against the supporting plate 15, so that the ring is not easy to tilt after being placed. The distance from the top of the supporting plate 15 to the top of the jaw is less than the axial length of the ring, that is, the distance from the top of the supporting plate 15 to the top of the jaw on the driving component 13 is shorter, so that the tested parts are more easily flipped off the driving component 13 after being blown by the unilateral air pressure during the unloading process.

[0037] A charging power source 16 is provided in the middle of the turntable 12, and the cable of the driving component 13 is electrically connected to the charging power source 16, so that the cable is not easily entangled when the driving component 13 rotates with the turntable 12. Since the cable on the driving component 13 is provided on the motor body, and the motor body is located below the turntable 12, a threading hole 122 is provided at a position of the turntable 12 near the charging power source 16, and the end of the cable on the driving component 13 connected to the charging power source 16 can pass through the threading hole 122 and connect to the charging power source 16, so as not to interfere with other structures.

[0038] Reference Figure 2 and Figure 3 The automatic feeding mechanism 2 includes a conveyor belt 21, an XYZ module 22, a clamping cylinder and a module bracket 23. The conveyor belt 21 is used to convey the measured parts, the module bracket 23 is fixedly installed on the top of the base 11, the clamping cylinder is installed on the XYZ module 22 and is suitable for clamping the measured parts on the conveyor belt 21, and the XYZ module 22 is installed on the module bracket 23 and is suitable for driving the clamping cylinder to drive the parts to move to the feeding station and place the parts on the driving assembly 13 of the feeding station. The XYZ module 22 is a prior art, that is, the XYZ module 22 is assembled from three linear modules that move and connect with each other in the horizontal, vertical and vertical directions, respectively, and the clamping cylinder is installed on the linear module that can move in the vertical direction.

[0039] A driving cylinder 111 is installed at the detection station on the base 11, and an extension bracket 112 is fixedly connected to the telescopic rod of the driving cylinder 111. The measuring instrument 3 is installed on the extension bracket 112. The driving cylinder 111 can drive the extension bracket 112 to drive the measuring instrument 3 to move closer to or away from the turntable 12 along the radial direction of the turntable 12. After the turntable 12 rotates and stops, the driving cylinder 111 drives the measuring instrument 3 to approach the turntable 12 and abut against the outer wall of the measured part at this position, and the motor body drives the electric clamp to drive the measured part to rotate to achieve the measurement of the outer diameter of the part.

[0040] A display 113 is provided on the base 11, and the display 113 is electrically connected to the measuring instrument 3. The value measured by the measuring instrument 3 can be displayed on the display 113 and then fed back to the control system, so that the control system controls the first pneumatic unloading mechanism 4 or the second pneumatic unloading mechanism 5 to take action.

[0041] Combination Figure 2 Reference Figure 5 and Figure 6 The first pneumatic material discharging mechanism 4 and the second pneumatic material discharging mechanism 5 have the same structure and are only located in different positions, so the following description will take the first pneumatic material discharging mechanism 4 as an example.

[0042] The first pneumatic unloading mechanism 4 includes a guide box 41, an air pipe 42, a unloading guide plate 43 and an air pump 44. The air pump 44 is fixedly mounted on the top of the base 11. One end of the air pipe 42 is connected to the inside of the guide box 41, and the other end is connected to the air source. After the air pipe 42 is ventilated, the gas is discharged through the guide box 41 to blow down the parts located on the drive assembly 13. The unloading guide plate 43 is fixedly mounted on the base 11, and the blown-off parts fall onto the unloading guide plate 43 and are guided into the collection frame.

[0043] The guide box 41 is located below the side of the tested part close to the charging power source 16, and the guide box 41 is located below the support plate 15 on the driving assembly 13, and is not in contact with the turntable 12 and is suspended. The top of the guide box 41 is provided with an arc-shaped air outlet 411, and the gas in the air pipe 42 is discharged from the arc-shaped air outlet 411 and blows the tested part off the corresponding driving assembly 13. The arc-shaped air outlet 411 can blow up the side of the tested part close to the center of the turntable 12 more closely, so that the tested part can be subjected to a large air pressure on one side and flipped from the driving assembly 13 to the unloading guide plate 43.

[0044] Combination Figure 2 Reference Figure 5 and Figure 6 The air pipe 42 is a hard pipe body that is not easy to deform, so that the guide box 41 can be suspended on the turntable 12 without interfering with the rotation of the turntable 12. A support rod is also provided on the top of the base 11 to support the air pipe 42, which further improves the stability of the air pipe 42.

[0045] The material unloading guide plate 43 is tiltedly disposed on the base 11 , that is, the height of one end of the material unloading guide plate 43 close to the turntable 12 is higher than the other end, thereby facilitating the parts to slide down under the action of gravity.

[0046] The implementation principle of a powder metallurgy part shape and position tolerance detection device in the embodiment of the present application is as follows: the XYZ module 22 cooperates with the clamping cylinder to move the parts located on the conveyor belt 21 to the driving assembly 13 at the loading station. The driving motor 14 drives the turntable 12 to make intermittent rotational motion. After the turntable 12 rotates to the measuring station and stops, the driving cylinder 111 drives the measuring instrument 3 to approach the turntable 12 and abut against the outer wall of the measured part at this position, and the motor body drives the electric clamp to drive the measured part to rotate to achieve the measurement of the outer diameter of the part. The value measured by the measuring instrument 3 can be displayed on the display 113, and then fed back to the control system, so that the control system controls the first pneumatic unloading mechanism 4 or the second pneumatic unloading mechanism 5 to take action.

[0047] If the measuring instrument 3 measures a qualified product, the air pipe 42 at the defective product unloading station will not be ventilated, and the measured parts can smoothly pass through the defective product unloading station and rotate to the qualified product unloading station. At this time, the air pump 44 at the qualified product unloading station is operated to ventilate the air pipe 42, and the parts are blown onto the unloading guide plate 43 of the qualified product unloading station under the action of the guide box 41 at the qualified product unloading station, and the cycle is repeated.

[0048] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A device for detecting geometric tolerances of powder metallurgy parts, characterized in that: It comprises a rotating platform (1), an automatic feeding mechanism (2), a measuring instrument (3), a first pneumatic feeding mechanism (4) and a second pneumatic feeding mechanism (5); The rotating platform (1) comprises a base (11) and a turntable (12), wherein the turntable (12) is provided with a loading station, an inspection station, a defective product unloading station and a qualified product unloading station at intervals in the circumferential direction in sequence, and a driving component (13) is provided on the turntable (12), wherein the driving component (13) is suitable for mounting a tested part and driving the tested part to rotate, and the driving component (13) rotates synchronously with the turntable (12), and the driving component (13) passes through the loading station, the inspection station, the defective product unloading station and the qualified product unloading station in sequence, and a plurality of driving components (13) are provided at intervals in the circumferential direction on the turntable (12), and when any one of the driving components (13) is located at the loading station, one of the driving components (13) stays at the defective product unloading station and the qualified product unloading station; The automatic loading mechanism (2) is arranged at the loading station to place the tested part on the driving assembly (13) at the loading station, the measuring instrument (3) is connected to the base (11) and is located at the detection station to detect the shape and position tolerance of the part, the first pneumatic unloading mechanism (4) is located at the defective product unloading station and is suitable for blowing unqualified products off from the corresponding driving assembly (13), and the second pneumatic unloading mechanism (5) is located at the qualified product unloading station and is suitable for blowing qualified products off from the corresponding driving assembly (13); The first pneumatic unloading mechanism (4) comprises a guide box (41) and an air pipe (42), wherein the guide box (41) is located below the part to be tested on the side close to the rotation axis of the turntable (12), one end of the air pipe (42) is connected to the inside of the guide box (41), and the other end is connected to and communicated with an air source, and an arc-shaped air outlet (411) is provided on the top of the guide box (41), and the gas in the air pipe (42) is discharged from the arc-shaped air outlet (411) and discharges the part to be tested from the turntable (12). Corresponding to the upward and downward blowing of the driving component (13), the base (11) is provided with a driving cylinder (111), the driving cylinder (111) is connected to the measuring instrument (3), the driving cylinder (111) is used to drive the measuring instrument (3) to approach the center of the turntable (12) so as to contact the measured part, and the base (11) is provided with a display (113), the display (113) is electrically connected to the measuring instrument (3) and is suitable for displaying the measured value.

2. A powder metallurgy parts shape and position tolerance detection device according to claim 1, characterized in that: A charging power source (16) is provided in the middle of the turntable (12), and the driving component (13) is electrically connected to the charging power source (16).

3. A powder metallurgy parts shape and position tolerance detection device according to claim 2, characterized in that: The driving component (13) is an electric rotating clamp.

4. A powder metallurgy parts shape and position tolerance detection device according to claim 3, characterized in that: A support plate (15) is provided on the side of the driving component (13) where the clamping jaws are away from each other. The part to be tested is sleeved on the clamping jaws of the driving component (13), and the bottom of the part to be tested abuts against the support plate (15).

5. A powder metallurgy parts shape and position tolerance detection device according to claim 4, characterized in that: The distance from the top of the support plate (15) to the top of the clamping jaw of the driving assembly (13) is smaller than the axial length of the circular ring in the measured part.

6. A powder metallurgy parts shape and position tolerance detection device according to claim 5, characterized in that: The first pneumatic unloading mechanism (4) further comprises an unloading guide plate (43), wherein the unloading guide plate (43) is arranged obliquely on the base (11), and the tested parts blown down from the driving assembly (13) through the guide box (41) will fall onto the unloading guide plate (43).

7. A powder metallurgy parts shape and position tolerance detection device according to claim 6, characterized in that: The automatic loading mechanism (2) comprises a conveyor belt (21), an XYZ module (22), a clamping cylinder and a module bracket (23); the module bracket (23) is fixedly mounted on the base (11); the clamping cylinder is mounted on the XYZ module (22) and is suitable for clamping parts on the conveyor belt (21); the XYZ module (22) is mounted on the module bracket (23) and is suitable for driving the clamping cylinder to drive the parts to move to the loading station and place the parts on the driving component (13) of the loading station.

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