Tool and method for detecting shaft parts with angle requirements on interfaces at two ends

Abstract

The invention relates to the technical field of shaft part detection, and discloses a tool and method for detecting a shaft part with two end interfaces having angle requirements, the tool comprises a track module, a shaft supporting assembly, a limiting assembly, a positioning supporting body and a positioning body, the track module comprises a guide rail and a sliding body installed on the guide rail; the shaft supporting assembly comprises a base and a supporting part which are installed on the guide rail. At least two groups of positioning supporting bodies are arranged, at least one group of positioning supporting bodies is arranged on the sliding body, positioning body mounting positions are arranged in the positioning supporting bodies, the positioning bodies can be detachably arranged at the positioning body mounting positions, and profiling structures matched with the two ends of a shaft to be detected are arranged in the positioning bodies; the positioning supporting body can move on the track module and can adapt to shaft bodies of different lengths, only positioning bodies with corresponding profiling structures need to be replaced for shaft bodies of different types, the detection tool is simple in structure and low in cost, detection of products in batch production can be achieved, and the product quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft part detection, and particularly to a detection tool and method for shaft parts with angular requirements at both ends of the interfaces. Background Art

[0002] In the transmission connection of two or more assemblies (parts) of an automobile using shaft parts, there are special requirements such as direction, timing, ignition, sensing, positioning, etc. between the two or more assemblies (parts). It is necessary to rely on an intermediate connecting shaft to ensure that the angular standards at both ends are consistent. For connecting shafts such as steering shafts, input shafts, output shafts, drive shafts, motor shafts, etc., detecting the angles at both ends of this type of shaft part has become a thorny problem. Currently, the commonly used detection method is to detect through a coordinate measuring machine (CMM). The advantages are general, accurate, and effective. The disadvantages are low efficiency, high cost, and long time. It can only be applied to the process verification and equipment verification (tooling, fixtures, inspection tools, data acquisition) of sample development, and it is impossible to implement detection in mass production. In view of the above problems, this application is proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a detection tool and method for shaft parts with angular requirements at both ends of the interfaces, which is applicable to detecting whether the production and manufacturing of the angles at both ends of automobile shafts meet the design requirements, and has the characteristics of low cost and high detection efficiency, so as to solve the problem that it is difficult to implement comprehensive or large-scale detection in mass production due to high cost and low efficiency in the traditional detection of the angles at both ends of shaft parts.

[0004] The present invention is realized through the following technical solutions.

[0005] The detection tool for shaft parts with angular requirements at both ends of the interfaces of the present invention includes a track module, a shaft support assembly, a limit assembly, a positioning support body, and a positioning body. The track module includes a guide rail and a sliding body installed on the guide rail; the shaft support assembly includes a base installed on the guide rail and a support part, and the support part is used to support the shaft to be detected; the limit assembly is used to limit the moving range of the sliding body on the guide rail; at least two groups of the positioning support bodies are provided, and at least one group of them is installed on the sliding body. A positioning body installation position is provided in the positioning support body, and the positioning body can be detachably installed at the positioning body installation position. The positioning body has a profiling structure matching the two ends of the shaft to be detected, and a positioning body with a corresponding profiling structure is selected and installed at the positioning body installation position according to the type of the shaft to be detected.

[0006] Further, the limit assembly includes two groups of limit blocks that can be installed on the guide rail.

[0007] Further, the support part includes a lifting body, and the lifting body is installed on the base and can be lifted to adapt to shafts to be detected with different heights.

[0008] Furthermore, the support part includes a support wheel set and a pressing wheel set. The pressing wheel set is connected to the lifting drive module, and at least two rollers are provided in both the support wheel set and the pressing wheel set.

[0009] Furthermore, both groups of the positioning supports are mounted on the sliding body.

[0010] Furthermore, the track module further includes a translation drive module for driving the sliding body to move on the guide rail, and a power module for driving the rollers to rotate is provided in the support wheel set and / or the pressing wheel set.

[0011] Furthermore, the inspection tool for shaft parts with angular requirements at both ends of the interface further includes a pressing plate, an elastic body, and a sensor assembly. The elastic body and the sensor assembly are mounted on the pressing plate. The pressing plate can be mounted in the positioning body mounting position. The sensor assembly is used to detect the relative position between the positioning body and the pressing plate, and the sensor assembly is electrically connected to the translation drive module and the power module.

[0012] Furthermore, an insertion interface is provided on the sliding body, and the positioning support and the sliding body are connected by insertion.

[0013] The inspection method for shaft parts with angular requirements at both ends of the interface includes the following steps: Select a positioning body with a corresponding profiling structure according to the shaft to be inspected and mount it at the positioning body mounting position. Mount one end of the shaft to be inspected into the profiling structure of one side positioning body, and mount the other end of the shaft to be inspected into the profiling structure of the other side positioning body. If both ends of the shaft to be inspected can be mounted in the positioning body, the shaft to be inspected is a qualified product. If one end of the shaft to be inspected cannot be mounted in the positioning body, the shaft to be inspected is an unqualified product.

[0014] Furthermore, the following steps are also included: Clamp and support the shaft to be inspected by using the support wheel set and the pressing wheel set. Use the translation drive module to drive one side of the positioning support to move towards one end of the shaft to be inspected. When the shaft to be inspected contacts the positioning body, the positioning body compresses the elastic body, and the sensor assembly sends an instruction to the translation drive module to stop the movement of the positioning support. Use the power module to drive the shaft to be inspected to rotate. When the shaft to be inspected rotates to the same angle as the profiling structure in the positioning body, one end of the shaft to be inspected enters the profiling structure of the positioning body. The positioning body moves outwards under the action of the elastic body. The sensor assembly sends a stop rotation instruction to the power module and a continue movement instruction to the translation drive module to make the positioning bodies on both sides move towards the shaft to be inspected for inspection.

[0015] Advantages of the present invention: In this solution, by providing an orbital module, a shaft support assembly, a positioning support body, and a positioning body, the positioning support body can move on the orbital module and can adapt to shafts of different lengths. For different types of shafts, only the positioning body with a corresponding profiling structure needs to be replaced. During detection, one end of the shaft to be detected is installed into the profiling structure of the positioning body on one side, and the other end of the shaft to be detected is installed into the profiling structure of the positioning body on the other side. If both ends of the shaft to be detected can be installed in the positioning body, the shaft to be detected is a qualified product; if one of the ends of the shaft to be detected cannot be installed in the positioning body, the shaft to be detected is an unqualified product. The detection efficiency is high, and the detection tool has a simple structure and low cost, enabling the detection of products during mass production and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 Structural schematic diagram of the shaft part detection tool with angular requirements for both ends in Embodiment 1;

[0019] Figure 2 Exploded view of the shaft part detection tool with angular requirements for both ends in Embodiment 1;

[0020] Figure 3 Exploded view of the shaft part detection tool with angular requirements for both ends in Embodiment 2;

[0021] Figure 4 Exploded view of the shaft part detection tool with angular requirements for both ends in Embodiment 4. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will be combined with Figures 1-4 to describe the present invention in detail.

[0023] Embodiment 1:

[0024] The shaft part detection tool with angular requirements for both ends of the present invention is applicable to detecting automotive shafts, such as whether the angular production and manufacturing of both ends of steering shafts, input shafts, output shafts, drive shafts, motor shafts, etc. meet the design requirements.

[0025] Such as Figure 1, the detection tool includes a base 1, a rail module 2, a shaft support assembly 6, a limit assembly 5, a positioning support 3 and a positioning body 4.

[0026] The rail module 2 includes a guide rail 22 and a sliding body 21 mounted on the guide rail 22. Two sets of guide rails 22 are provided. Ball bearings are provided on the sliding body 21 to make rolling contact with the guide rail 22, reducing the frictional force.

[0027] At least two sets of positioning supports 3 are provided.

[0028] In this embodiment, one set of positioning supports 3 is mounted on the sliding body 21, and the other set of positioning supports 3 is mounted on the mounting table 11 on the base 1. Plug interfaces 23 and 12 are respectively provided on the sliding body 21 and the mounting table 11. A protrusion matching the plug interface is provided at the bottom of the positioning support 3 to achieve plug-in positioning cooperation. For further fixation, bolt holes can be provided on the positioning support 3, the sliding body 21 and the mounting table 11, and further fixation can be achieved by installing bolts.

[0029] The limit assembly 5 is used to limit the movement range of the sliding body 21 on the guide rail 22. Specifically, the limit assembly 5 includes two sets of limit blocks that can be mounted on the guide rail 22. The installation positions of the limit blocks are adjustable. According to the length of the shaft to be detected, the sliding body 21 is restricted to move within a certain length range, enabling quick adjustment; and the movement ranges of the sliding body 21 and the base 62 are divided to prevent them from colliding with each other when moving.

[0030] A positioning body installation position 31 is provided in the positioning support 3. The positioning body installation position 31 is a square through hole, and the positioning body 4 can be detachably installed at the positioning body installation position 31.

[0031] In this embodiment, after the positioning body 4 is installed in the positioning body installation position 31, the positioning body 4 can be optionally fixed by installing bolts on the positioning support 3, or the positioning body 4 can be left unfixed.

[0032] The positioning body 4 has a profiling structure matching the two ends of the shaft to be detected. According to the type of the shaft to be detected, a positioning body 4 with a corresponding profiling structure is selected and installed at the positioning body installation position 31.

[0033] The shaft support assembly 6 includes a base 62 mounted on the guide rail 22 and a support portion 61. Ball bearings are provided on the base 62 to facilitate smooth movement on the guide rail 22. The support portion 61 is used to support the shaft to be detected.

[0034] Such as Figure 2 , the support portion 61 includes a lifting body 66. The lifting body is mounted on the base 62 and adapts to shafts to be detected with different heights through lifting. The lifting body can adopt structures such as bolts and cylinders. Bolts are adopted in this embodiment.

[0035] Inspection method for shaft parts with angular requirements for both ends of the interface, comprising the following steps: Select a positioning body 4 with a corresponding profiling structure according to the shaft to be inspected and install it at the positioning body installation position 31. Install one end of the shaft to be inspected into the profiling structure of the fixed positioning body 4 on one side. Adjust the height of the support portion 61 to support the shaft body. Move the sliding body 21 and install the other end of the shaft to be inspected into the profiling structure of the positioning body 4 on the other side. If both ends of the shaft to be inspected can be installed in the positioning body 4, the shaft to be inspected is a qualified product. If one of the ends of the shaft to be inspected cannot be installed into the positioning body 4, the shaft to be inspected is an unqualified product.

[0036] Embodiment 2:

[0037] Different from Embodiment 1, in this embodiment, the lifting body 66 is not provided or a bolt is not used as the lifting body.

[0038] As Figure 3 , the support portion 61 includes a support wheel set 65 and a pressing wheel set 64. The support wheel set 65 is installed on the base 62. The pressing wheel set 64 is connected to the lifting drive module. The lifting drive module can be optionally set as a cylinder, a lead screw module, etc., and can be installed on the base 1 or on other surrounding structures. Both the support wheel set 65 and the pressing wheel set 64 are provided with a wheel frame and at least two rollers installed on the wheel frame. The shaft to be inspected is supported and clamped by the rollers. After clamping, the shaft to be inspected can still rotate. During inspection, after clamping the shaft to be inspected, move the base 62 to make the shaft to be inspected close to the positioning body 4 on one side, and rotate the shaft body to align with the profiling structure hole in the positioning body 4; This solution can rotate the shaft body in a horizontal state. During the rotation process, it can be judged by hand feeling whether the shaft to be inspected is inserted into the positioning body 4, without having to stare at the profiling structure of the positioning body 4 for adjustment, which can improve the inspection efficiency.

[0039] Preferably, in this embodiment, two sets of sliding bodies 21 are provided. Both sets of positioning and supporting bodies 3 are installed on the sliding bodies 21. During inspection, both sets of positioning and supporting bodies 3 can move, improving flexibility. Optionally, a limiting component 5 is correspondingly provided for each set of sliding bodies 21.

[0040] Embodiment 3:

[0041] On the basis of Embodiment 2, a lifting body, such as a cylinder, a bolt, etc., is also provided on the base 62 in this embodiment to adjust the height of the support wheel set 65 to adapt to shaft bodies of different heights.

[0042] Embodiment 4:

[0043] Based on Embodiment 2 or 3, in this embodiment, the track module 2 further includes a translation drive module for driving the sliding body 21 to move on the guide rail 22. Optionally, a cylinder, an electric screw linear module, an electric guide rail, etc. can be separately provided as the drive to drive the sliding body 21 to move on the guide rail 22. Alternatively, the guide rail 22 can be set as an electric guide rail to directly drive the sliding body 21 to move. Each of the two sliding bodies 21 corresponds to a translation drive module to achieve independent movement.

[0044] A power module 63 for driving the rollers to rotate is provided in the support wheel set 65 and / or the pressing wheel set 64. Preferably, the power module 63 is provided in the support wheel set 65. The power module 63 generally includes a small reduction motor or a motor, and can adopt a method of driving one roller or two rollers to rotate, which is used to realize the automatic rotation of the shaft to be detected.

[0045] Such as Figure 4 , this solution further includes a pressing plate 32, an elastic body 33 and a sensor assembly. The sensor assembly can be an optional distance sensor (infrared, ultrasonic sensor) or a pressure sensor. The elastic body 33 can be a spring or an elastic air rod. The elastic body 33 and the sensor assembly are installed on the pressing plate 32. The pressing plate 32 can be installed in the positioning body installation position 31. The sensor assembly is used to detect the relative position or pressure between the positioning body 4 and the pressing plate 32. The sensor assembly is electrically connected to the translation drive module and the power module 63. The sensor assembly, the translation drive module and the power module 63 can be connected to a control system. The control system can adopt a PLC controller, a microprocessor or a computer system.

[0046] An anti-fooling structure, such as a concave-convex matching structure or an indication mark, can be optionally provided in the positioning body installation position 31 or the positioning body 4 to facilitate the correct installation of the positioning body 4. A border 34 extending into the hole is provided at the end position of the positioning body installation position 31. After the positioning body 4 is installed to the end position in the positioning body installation position 31, the border 34 forms a block for the positioning body 4 to prevent the positioning body 4 from falling from the other side of the hole. After the positioning body 4 is installed, the pressing plate 32 is installed on the other side of the hole of the positioning body installation position 31. The pressing plate 32 can be fixed to the positioning support body 3 by a clamping method or a bolt connection method. At this time, the elastic body 33 contacts the end face of the positioning body 4.

[0047] It should be noted that all electrical components in this solution can be powered by batteries or an external power supply.

[0048] During detection, the to-be-detected shaft is clamped and supported by the support wheel set 65 and the pressing wheel set 64. The translation drive module is used to drive the positioning support body 3 on one side to move towards one end of the to-be-detected shaft. When the to-be-detected shaft contacts the positioning body 4, the positioning body 4 presses on the elastic body 33 and compresses it. The sensor assembly senses the change in distance or pressure, sends an instruction to the translation drive module to stop the movement of the positioning support body 3. The power module 63 is used to drive the to-be-detected shaft to rotate. When the to-be-detected shaft rotates to the same angle as the profiling structure in the positioning body 4, one end of the to-be-detected shaft enters the profiling structure of the positioning body 4, and the elastic body 33 loses pressure. The positioning body 4 moves outwards under the action of the elastic body 33. At this time, the sensor assembly sends a stop rotation instruction to the power module 63 and a continue movement instruction to the translation drive module, so that the positioning bodies 4 on both sides move a corresponding set distance towards the to-be-detected shaft for detection. If the other sensor assembly detects that the distance or pressure between the positioning body 4 and it reaches the set value, it is determined that the other side of the to-be-detected shaft cannot enter the positioning body 4. At this time, a stop instruction is sent to the translation drive module.

[0049] If both ends of the to-be-detected shaft can be installed in the positioning body 4, the to-be-detected shaft is a qualified product. If one end of the to-be-detected shaft cannot be installed in the positioning body 4, the to-be-detected shaft is an unqualified product.

[0050] This embodiment can realize automatic detection and reduce labor costs.

[0051] Embodiment 5:

[0052] On the basis of Embodiment 4, in this embodiment, the detection steps further include the following steps: During the movement of the positioning bodies 4 on both sides towards the to-be-detected shaft, when the positioning body 4 on the other side cannot match the to-be-detected shaft, the power module 63 drives the to-be-detected shaft to rotate forward and backward within a set angle range. If it still cannot enter the positioning body 4, it is determined as a qualified product. This step takes into account the situation that there is a certain tolerance range for the angle of the to-be-detected shaft.

[0053] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A shaft part inspection tool with angular requirements for both ends of the interface, characterized in that: It includes an orbit module (2), a shaft support assembly (6), a limit assembly (5), a positioning support body (3) and a positioning body (4). The orbit module (2) includes a guide rail (22) and a sliding body (21) mounted on the guide rail (22); the shaft support assembly (6) includes a base (62) and a support portion (61) mounted on the guide rail (22), and the support portion (61) is used to support the shaft to be detected; the limit assembly (5) is used to limit the movement range of the sliding body (21) on the guide rail (22); at least two groups of the positioning support bodies (3) are provided, and at least one group is mounted on the sliding body (21). A positioning body mounting position (31) is provided in the positioning support body (3), and the positioning body (4) can be detachably mounted at the positioning body mounting position (31). The positioning body (4) has a profiling structure matching the two ends of the shaft to be detected. According to the type of the shaft to be detected, a positioning body (4) with a corresponding profiling structure is selected and mounted at the positioning body mounting position (31).

2. The shaft part detection tool with angular requirements for both ends' interfaces according to claim 1, characterized in that: The limit assembly (5) includes two limit blocks that can be mounted on the guide rail (22).

3. The shaft part detection tool with angular requirements for both ends interfaces according to claim 1, characterized in that: The support portion (61) includes a lifting body, and the lifting body is mounted on the base (62) and adapts to the shafts to be detected with different heights by lifting.

4. The shaft part detection tool with angular requirements for both ends' interfaces according to any one of claims 1-3, characterized in that: The support portion (61) includes a support wheel set (65) and a pressing wheel set (64). The pressing wheel set (64) is connected to a lifting drive module. At least two rollers are provided in both the support wheel set (65) and the pressing wheel set (64).

5. The shaft part detection tool with angular requirements for both ends' interfaces according to claim 4, characterized in that: Both groups of the positioning support bodies (3) are mounted on the sliding body (21).

6. The shaft part detection tool with angular requirements for both ends' interfaces according to claim 5, characterized in that: The orbit module (2) further includes a translation drive module for driving the sliding body (21) to move on the guide rail (22). A power module (63) for driving the rollers to rotate is provided in the support wheel set (65) and / or the pressing wheel set (64).

7. The shaft part detection tool with angular requirements for both ends interfaces according to claim 6, characterized in that: The shaft part detection tool with angle requirements at both ends of the interface further includes a pressing plate (32), an elastic body (33) and a sensor assembly. The elastic body (33) and the sensor assembly are mounted on the pressing plate (32). The pressing plate (32) can be mounted in the positioning body mounting position (31). The sensor assembly is used to detect the relative position between the positioning body (4) and the pressing plate (32), and the sensor assembly is electrically connected to the translation drive module and the power module (63).

8. The shaft part detection tool with angular requirements for both ends' interfaces according to claim 1, characterized in that: An insertion interface (23) is provided on the sliding body (21), and the positioning support body (3) is connected to the sliding body (21) by insertion.

9. The inspection method for a shaft part with angular requirements at both ends is completed by using the inspection tool for a shaft part with angular requirements at both ends described in any one of claims 1-8, and is characterized in that: It includes the following steps: Select a positioning body (4) with a corresponding profiling structure according to the shaft to be detected and mount it at the positioning body mounting position (31). Mount one end of the shaft to be detected into the profiling structure of the positioning body (4) on one side, and mount the other end of the shaft to be detected into the profiling structure of the positioning body (4) on the other side. If both ends of the shaft to be detected can be mounted in the positioning body (4), the shaft to be detected is a qualified product. If one end of the shaft to be detected cannot be mounted in the positioning body (4), the shaft to be detected is an unqualified product.

10. The shaft part detection method with angular requirements for both ends interfaces according to claim 9, characterized in that: It further includes the following steps: clamping and supporting the shaft to be detected by using the supporting wheel set (65) and the pressing wheel set (64); driving the positioning support body (3) on one side to move towards one end of the shaft to be detected by using the translation driving module; when the shaft to be detected contacts the positioning body (4), the positioning body (4) compresses the elastic body (33), and the sensor assembly sends an instruction to the translation driving module to stop the movement of the positioning support body (3); driving the shaft to be detected to rotate by using the power module (63); when the shaft to be detected rotates to the same angle as the profiling structure in the positioning body (4), one end of the shaft to be detected enters the profiling structure of the positioning body (4), and the positioning body (4) moves outwards under the action of the elastic body (33); the sensor assembly sends a stop rotation instruction to the power module (63) and a continue movement instruction to the translation driving module to make the positioning bodies (4) on both sides move towards the shaft to be detected for detection.

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