Centering and clamping mechanism for metal spacer of elastic bearing and image detection system

Abstract

The utility model provides a centering and clamping mechanism for a metal spacer of an elastic bearing and an image detection system, the centering and clamping mechanism comprises a support table, the support table comprises a plurality of support strips which are symmetrically arranged at intervals, and the metal spacer is placed on the plurality of support strips; the clamping mechanism is arranged above the supporting table and is used for centering and clamping the metal spacer; the clamping mechanism comprises two parallel clamping supporting strips, and the two clamping supporting strips can move towards each other and / or move back to back. Clamping strips are arranged on the corresponding sides of the two clamping supporting strips respectively, and the clamping side of each clamping strip comprises two clamping planes with the included angle being an obtuse angle. The supporting table can uniformly support the metal spacer, so that the metal spacer can be stably placed, and the metal spacer can be effectively and accurately centered and clamped by the clamping mechanism. The clamping mechanism can stably, effectively and automatically center and clamp the metal spacer, so that the position of the metal spacer is centered, and the metal spacer can be detected more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of elastic bearing detection, in particular to a centering clamping mechanism and an image detection system for a metal spacer of an elastic bearing. Background Art

[0002] As an important component of the helicopter rotor system, the elastic bearing plays a flexible role in connecting the blades and the hub centerpiece, reducing the torsion, flapping and shimmy loads on the centerpiece during the rotation of the blades, which can greatly increase the service life of the blades and the rotor system. As one of the main components of the elastic bearing, the metal spacer has a direct impact on the performance of the elastic bearing due to its dimensional accuracy. Therefore, the inspection of the metal spacer is extremely strict.

[0003] For metal spacers, the dimensions that need to be inspected include: outer diameter, inner hole diameter, spacer thickness, inner ball radius and weight, etc.; there are many types of metal spacers with large size differences, with a total of more than 100 types, and the outer diameter size ranges from 30mm to 160mm. The traditional image detection method is to use an imager to detect the outer diameter and inner hole diameter of the metal spacer. During the inspection, the metal spacer needs to be placed and aligned with the imager for accurate inspection. The existing image detection method has strict requirements on the concentration of the inspectors, high labor intensity, and low degree of automation. It is impossible to accurately align the metal spacer and align the metal spacer with the imager, so the detection accuracy cannot be guaranteed. Summary of the invention

[0004] The purpose of the utility model is to provide a centering clamping mechanism and a detection system for a metal spacer of an elastic bearing, which can realize a stable and effective automatic centering clamping effect on the metal spacer, so as to facilitate more accurate detection of the metal spacer and improve the detection accuracy.

[0005] To this end, the utility model provides a centering clamping mechanism for a metal spacer of an elastic bearing, comprising a mounting plate, on which is provided: a support platform, comprising a plurality of support bars spaced apart and symmetrically arranged, on which the metal spacer is placed; a clamping mechanism, which is arranged above the support platform and is used to center and clamp the metal spacer; the clamping mechanism comprises two parallel clamping struts, which can move toward and / or away from each other; clamping strips are respectively provided on corresponding sides of the two clamping struts, and the clamping sides of the clamping strips comprise two clamping planes with obtuse angles.

[0006] Preferably, the number of the support bars is four, the four support bars form a cross shape, and the opposite ends of the four support bars are not connected to each other.

[0007] Preferably, a lighting area is provided on the mounting plate, and the lighting area is located in a region surrounded by opposite ends of the four support strips.

[0008] Preferably, a support groove is provided on the mounting plate, a plurality of mounting grooves are symmetrically provided on the inner wall of the support groove, and the mounting ends of the plurality of support bars are respectively mounted in the plurality of mounting grooves.

[0009] Preferably, reinforcing ribs are respectively provided on both sides of the support bar, and the reinforcing ribs extend from the opposite ends of the support bar toward the mounting end and their widths gradually increase.

[0010] Preferably, a retaining groove is provided on the clamping side of the clamping strip, and the retaining groove is clearance-matched with the supporting strip.

[0011] Preferably, one side of the clamping stay is connected to an elastic connector, a clamping strip connecting plate is connected to the elastic connector, and the clamping strip is connected to the clamping strip connecting plate.

[0012] Preferably, a screw assembly for driving the two clamping struts to move is provided on the mounting plate, a screw of the screw assembly and a moving direction of the clamping strut are parallel, and one end of the clamping strut is connected to the screw.

[0013] Preferably, a slide rail for guiding the movement of the two clamping stays is provided on the mounting plate, and the other end of the clamping stay is slidably matched with the slide rail.

[0014] The utility model also provides an image detection system for metal spacers of elastic bearings, including the centering clamping mechanism; it also includes an image detection table, on which an image instrument and a movable table are provided, the centering clamping mechanism is arranged on the movable table, and the image instrument detects the metal spacer on the support table.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are as follows: the utility model provides a centering clamping mechanism and an image detection system for a metal spacer of an elastic bearing, the centering clamping mechanism includes a mounting plate, the mounting plate is provided with: a support platform, including a plurality of support bars spaced apart and symmetrically arranged, the metal spacer is placed on the plurality of support bars; a clamping mechanism, arranged above the support platform and used for centering and clamping the metal spacer; the clamping mechanism includes two parallel clamping struts, the two clamping struts can move toward each other and / or move back and forth; a clamping strip is provided on the corresponding side of the two clamping struts, the clamping side of the clamping strip includes two clamping planes with obtuse angles. The support platform includes a plurality of support bars spaced apart and symmetrically arranged, the metal spacer is placed on the plurality of support bars, and the metal spacer can be evenly supported, so that the metal spacer can be stably placed on the support platform, so that the clamping mechanism can effectively and accurately center and clamp the metal spacer. The clamping mechanism can achieve stable and effective automatic centering clamping for the metal spacer, so that the position of the metal spacer is centered, and the metal spacer can be located at the center of the support table, so as to facilitate more accurate detection of the metal spacer and improve detection accuracy.

[0016] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a centering clamping mechanism for a metal spacer of an elastic bearing according to the utility model;

[0018] Figure 2 It is a structural schematic diagram of an embodiment of the mounting plate of the utility model;

[0019] Figure 3 It is a structural schematic diagram of an embodiment of a support platform used in the utility model;

[0020] Figure 4 It is a structural schematic diagram of an embodiment of a support platform used in the utility model;

[0021] Figure 5 It is a structural schematic diagram of an embodiment of the support bar used in the utility model;

[0022] Figure 6 It is a structural schematic diagram of an embodiment of the clamping stay of the utility model;

[0023] Figure 7 It is a structural schematic diagram of an embodiment of a screw assembly of the utility model;

[0024] Figure 8It is a structural schematic diagram of another embodiment of the support platform used in the utility model;

[0025] Fig. 9 The utility model is a structural schematic diagram of an embodiment of an image detection system for a metal spacer of an elastic bearing. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] like Figure 1-Figure 8 As shown, the centering clamping mechanism of the metal spacer for the elastic bearing of the utility model includes a mounting plate 10, a support platform is provided on the mounting plate 10, the support platform includes a plurality of support bars 21 spaced apart and symmetrically arranged, and the metal spacer is placed on the plurality of support bars 21; a clamping mechanism is arranged above the support platform and is used to clamp the metal spacer; the clamping mechanism includes two parallel clamping struts 31, and the two clamping struts 31 can move toward each other and / or move away from each other; corresponding sides of the two clamping struts 31 are respectively provided with clamping strips 32, and the clamping sides of the clamping strips 32 include two clamping planes 33 with obtuse angles.

[0028] The support platform includes a plurality of support bars 21 that are spaced apart and symmetrically arranged. The metal spacer is placed on the plurality of support bars 21, which can provide uniform support for the metal spacer so that the metal spacer can be placed stably on the support platform, so that the clamping mechanism can effectively and accurately center and clamp the metal spacer.

[0029] The clamping mechanism can achieve stable and effective automatic centering clamping for the metal spacer, so that the position of the metal spacer is centered, and the metal spacer can be located at the center of the support table, so as to facilitate more accurate detection of the metal spacer and improve detection accuracy.

[0030] An avoidance groove 34 is provided on the clamping side of the clamping strip 32. The avoidance groove 34 is clearance-matched with the support strip 21 to play an avoidance role, which can effectively prevent the support strip 21 from interfering with the movement of the clamping support strip 31, thereby ensuring that the clamping support strip 31 can move stably and effectively, thereby effectively centering and clamping the metal spacer.

[0031] like Figure 3 , Figure 4As shown, in this embodiment, there are four support bars 21, which are dispersedly arranged to form a cross, and the opposite ends of the four support bars 21 are not connected. The metal spacer is placed on the four support bars 21, and the four support bars 21 can provide uniform support force to the metal spacer, play a uniform supporting role on the metal spacer, and ensure that the metal spacer is stably placed on the support table, so that the clamping mechanism can effectively and accurately clamp the metal spacer in the center.

[0032] like Figure 8 As shown, in other preferred embodiments, the number of support bars 21 can also be three, and the three support bars 21 are dispersedly arranged, and the angle between two adjacent support bars 21 is 120°, and the opposite ends of the three support bars 21 are not in contact with each other, and no specific limitation is made here. The metal spacer is placed on the three support bars 21, and the three support bars 21 can provide uniform support force to the metal spacer, play a uniform supporting role on the metal spacer, and ensure that the metal spacer is stably placed on the support table, so that the clamping mechanism can effectively and accurately clamp the metal spacer in the center.

[0033] The mounting plate 10 is provided with a support groove 11, and four mounting grooves 12 are symmetrically provided on the inner wall of the support groove 11, and the mounting ends 211 of the four support bars 21 are respectively installed in the four mounting grooves 12. The mounting ends 211 of the support bars 21 can be fixed in the mounting groove 12 by bolts, or by other methods commonly used in the art, which are not specifically limited here.

[0034] The relative ends 212 of the four support bars 21 are not connected to each other, and the four support bars 21 are arranged at intervals, so that there is no interaction force between the four support bars 21, so that the four support bars 21 are only subjected to the pressure of the metal spacer. The four support bars 21 are evenly stressed, avoiding bending and deformation of the support bars 21, thereby ensuring that the four support bars 21 are located on the same plane, and further allowing the metal spacer to maintain balance, so as to facilitate more accurate detection of the metal spacer and improve detection accuracy.

[0035] An illumination area 19 is provided in the support groove 11, and the illumination area 19 is located in the area surrounded by the opposite ends 212 of the four support bars 21. The metal spacer is placed on the four support bars 21, and after the metal spacer is centered and clamped by the clamping mechanism, the center of the metal spacer can correspond to the illumination area 19; the illumination area 19 can illuminate the metal spacer evenly, so as to facilitate more accurate detection of the metal spacer and improve detection accuracy.

[0036] Reinforcement ribs 22 are provided on both sides of the support bar 21. The reinforcement ribs 22 extend from the opposite end 212 of the support bar 21 toward the mounting end 211, and the width gradually increases. The reinforcement ribs 22 can strengthen the support bar 21, increase the strength of the support bar 21, and prevent the support bar 21 from bending and deformation, thereby ensuring that the four support bars 21 are located on the same plane, and then the metal spacers can maintain balance, so as to facilitate more accurate detection of the metal spacers and improve detection accuracy. In addition, the reinforcement ribs 22 extend from the opposite end 212 of the support bar 21 toward the mounting end 211, and the width gradually increases, which can ensure that the edge of the metal spacer with a smaller diameter can also be illuminated by the light of the lighting area 19, so as to meet the detection of metal spacers with different diameters.

[0037] The clamping strip 32 directly contacts the metal spacer and clamps the metal spacer. The material of the clamping strip 32 can be POM material, which can protect the metal spacer and prevent the metal spacer from being worn.

[0038] The clamping side of the clamping strip 32 includes two clamping planes 33 with an obtuse angle α, which can increase the clamping angle of the clamping strip 32 and effectively center and clamp the metal spacer.

[0039] The two clamping planes 33 are symmetrically arranged, and the two clamping planes 33 are planes. The metal spacer is clamped by clamping strips 32 on both sides thereof, and specifically, the two clamping planes 33 on the clamping strips 32 clamp the metal spacer; the two clamping planes 33 are planes, which can automatically and effectively center the metal spacer, so that the metal spacer can be centrally arranged, thereby improving the detection accuracy and detection efficiency of the metal spacer.

[0040] One side of the clamping stay 31 is connected with an elastic connector, the elastic connector is connected with a clamping bar connecting plate 35 , and the clamping bar 32 is connected to the clamping bar connecting plate 35 .

[0041] In this embodiment, there are two elastic connectors, which are symmetrically arranged on the clamping stay 31 .

[0042] The clamping stay 31 and the clamping strip 32 can be evenly stressed, ensuring that the clamping strip 32 can move smoothly and within limits.

[0043] The elastic connecting member includes a linear bearing 351 arranged on the clamping support bar 31, and a slidable guide shaft 352 is matched on the linear bearing 351, and the sliding direction of the guide shaft 352 is consistent with the moving direction of the clamping bar 32; a spring 353 is sleeved on the guide shaft 352, the clamping bar connecting plate 35 is fixed on the end of the guide shaft 352, and the clamping bar 32 is fixedly connected to the clamping bar connecting plate 35.

[0044] When the clamp 32 clamps the metal spacer, the clamp 32 will be squeezed by the metal spacer and move; when the clamp 32 moves, it will drive the guide shaft 352 to move, which can guide the movement of the clamp 32, so that the clamp 32 can move smoothly and effectively, ensuring that the clamp 32 has an effective centering and clamping effect on the metal spacer.

[0045] The linear bearing 351 can realize smooth and effective sliding of the guide shaft 352, thereby realizing smooth and effective movement of the clamping strip 32.

[0046] The spring 353 can buffer the clamping strip 32, thereby providing a buffering protection for the metal spacer to prevent the metal spacer from breaking. In addition, the spring 353 can clamp the metal spacer through its elastic resistance to the clamping strip 32, so that the clamping strip 32 can effectively center and clamp the metal spacer.

[0047] The clamping mechanism also includes a screw assembly for driving the two clamping stays 31 to move horizontally, and a slide rail 13 for guiding the movement of the two clamping stays 31; the screw 14 and the slide rail 13 of the screw assembly are parallel to the movement direction of the clamping stays 31.

[0048] One end of the clamping stay 31 is connected to the lead screw 14. Specifically, the lead screw 14 is provided with a lead screw nut 15, and one end of the clamping stay 31 is fixedly connected to the lead screw nut 15. By rotating the lead screw 14, the lead screw nut 15 and the clamping stay 31 can be driven to move along the lead screw 31.

[0049] The other end of the clamping stay 31 is slidably matched with the slide rail 13. Specifically, the bottom of the other end of the clamping stay 31 slides along the slide rail 13, thereby guiding the movement of the clamping stay 31, so that the clamping stay 31 can move smoothly and effectively.

[0050] The mounting plate 10 is provided with a slide rail groove 16 , and the slide rail 13 is fixedly installed in the slide rail groove 16 .

[0051] The mounting plate 10 is provided with an optical fiber sensor 17, which is used to detect the clamping stay 31. When the clamping stay 31 moves to the set position in the back direction, the optical fiber sensor 17 detects the clamping stay 31, and at this time, the optical fiber sensor 17 sends a signal to the PLC control system, and the PLC control system controls the motor of the lead screw assembly to stop moving, thereby stopping the clamping stay 31 from moving.

[0052] An outer shield 18 is provided on the mounting plate 10, and the outer shield 18 can prevent fingers from being pinched and dust from being cut, and can protect the operator and the metal spacer, thereby preventing the metal spacer from being damaged and contaminated.

[0053] like Fig. 9As shown, the new image detection system of the utility model includes an image detection platform 25, on which an imager 23 and a movable platform 24 are provided, and a centering clamping mechanism is installed on the movable platform 24. The imager 23 is located above the support platform and directly faces the support platform.

[0054] The imager 23 is a common imager in the technical field, and is used to detect the outer diameter and inner diameter of the metal spacer.

[0055] The metal spacer is placed on the support table, and the two clamping struts 31 are driven to move toward each other (the two clamping struts 31 are close to each other) by the screw assembly, so that the clamping bars 32 on the two clamping struts 31 can clamp the two sides of the metal spacer in the center, so that the position of the metal spacer is centered and the metal spacer can be located at the center of the support table. Then the outer diameter and inner diameter of the metal spacer on the support table are detected by the imager 23. After the detection is completed, the two clamping struts 31 are driven to move back to each other (the two clamping struts 31 are away from each other) by the screw assembly to release the clamping of the metal spacer.

[0056] 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 above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with 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 claimed to be protected by the present invention.

Claims

1. A centering clamping mechanism for a metal spacer of an elastic bearing, comprising a mounting plate, characterized in that: The mounting plate is provided with: A support platform, comprising a plurality of support bars spaced apart and symmetrically arranged, wherein the metal spacer is placed on the plurality of support bars; A clamping mechanism, arranged above the support platform and used for centering and clamping the metal spacer; the clamping mechanism comprises two parallel clamping stays, and the two clamping stays can move toward each other and / or move away from each other; A clamping strip is provided on one corresponding side of the two clamping stays, and the clamping side of the clamping strip includes two clamping planes with obtuse angles.

2. The centering clamping mechanism for the metal spacer of the elastic bearing according to claim 1, characterized in that: The number of the support bars is four, the four support bars form a cross shape, and the opposite ends of the four support bars are not connected to each other.

3. The centering clamping mechanism for the metal spacer of the elastic bearing according to claim 2, characterized in that: The mounting plate is provided with a lighting area, and the lighting area is located in the area surrounded by the opposite ends of the four support strips.

4. The centering clamping mechanism for a metal spacer of an elastic bearing according to claim 1, characterized in that: The mounting plate is provided with a supporting groove, and a plurality of mounting grooves are symmetrically provided on the inner wall of the supporting groove, and the mounting ends of the plurality of supporting bars are respectively mounted on the plurality of mounting grooves.

5. The centering clamping mechanism for the metal spacer of the elastic bearing according to claim 4, characterized in that: Reinforcement ribs are respectively arranged on both sides of the support bar, and the reinforcement ribs extend from the opposite ends of the support bar toward the installation end, and the width of the reinforcement ribs gradually increases.

6. The centering clamping mechanism for a metal spacer of an elastic bearing according to claim 1, characterized in that: The clamping side of the clamping strip is provided with an escape groove, and the escape groove is in clearance fit with the supporting strip.

7. The centering clamping mechanism for a metal spacer of an elastic bearing according to claim 1, characterized in that: One side of the clamping stay is connected with an elastic connecting piece, the elastic connecting piece is connected with a clamping strip connecting plate, and the clamping strip is connected to the clamping strip connecting plate.

8. The centering clamping mechanism for a metal spacer of an elastic bearing according to claim 1, characterized in that: The mounting plate is provided with a lead screw assembly for driving the two clamping stays to move, the lead screw of the lead screw assembly is parallel to the moving direction of the clamping stay, and one end of the clamping stay is connected to the lead screw.

9. The centering clamping mechanism for a metal spacer of an elastic bearing according to claim 1, characterized in that: The mounting plate is provided with a slide rail for guiding the movement of the two clamping stays. The other end of the clamping stay is slidably matched with the slide rail.

10. An image detection system for metal spacers of elastic bearings, characterized in that: It includes the centering clamping mechanism as described in any one of claims 1-9; and also includes an image detection table, on which an imager and a movable table are provided, the centering clamping mechanism is arranged on the movable table, and the imager detects the metal spacer on the support table.

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