Inner wall imaging device capable of adapting to annular workpieces with different inner diameters

Abstract

An inner wall imaging device capable of adapting to annular workpieces with different inner diameters relates to the technical field of annular workpiece inner wall imaging and comprises a sensor camera and an annular workpiece, a telecentric lens is mounted at a port of the sensor camera, a point coaxial light source is arranged on the side face of the telecentric lens, an adjustable cam cylinder is mounted at a port of the telecentric lens, and the adjustable cam cylinder is connected with the annular workpiece. The inner wall imaging device capable of adapting to the annular workpieces with the different inner diameters can adapt to flaw imaging detection work of the inner walls of small-batch and multi-size annular workpieces in an industrial detection application scene, and the inner wall imaging device capable of adapting to the annular workpieces with the different inner diameters has the advantages of being simple in structure, convenient to use and high in practicability. In industrial production, when a workpiece needs to be switched, hardware such as an optical device does not need to be replaced, and the detection device can adapt to the change of the size of the annular workpiece only through simple adjustment, so that the cost can be greatly reduced, the utilization rate of the detection device is improved, and the quality inspection efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to annular workpiece inner wall imaging technical field especially to an inner wall imaging device of different inner diameter annular workpiece. BACKGROUND

[0002] With the development of modern industry, manufacturing industry such as photovoltaic lithium electricity, new energy automobile, the application of some such as bearing annular workpiece is also more and more widely. Due to the functional requirement, the inner wall flaw, roughness and some requirements of such annular workpiece are also higher and higher. The traditional quality inspection method relies on the human eye to judge, not only the accuracy, consistency is influenced by objective factors, and long time human eye quality inspection can also cause labor injury. With the vigorous development of machine vision industry, the appearance, inner wall detection of annular workpiece also begins to gradually replace manual work by machine vision;

[0003] But due to the limitation of machine vision optical hardware and the special structure of annular workpiece inner wall, for some small batch, inner diameter size type production enterprises, the existing machine vision technology needs to design multiple different imaging mechanisms and methods to cope with respectively, and the enterprises arranging production plan according to downstream orders often have the characteristics of multiple inner diameter size types and small batch, the traditional machine vision imaging method can only adopt multiple sets of devices (hardware) for different inner diameter sizes to solve one by one to solve this problem. Such method greatly improves the cost of solving the problem, and also cannot improve the utilization rate of detection equipment, and the efficiency of quality inspection is limited. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem to overcome the existing defects, provides an inner wall imaging device of different inner diameter annular workpiece, which can adapt to the flaw imaging detection work of small batch, multiple size annular workpiece inner wall in industrial detection application scene, in industrial production, whenever workpiece needs to be switched, optical device and other hardware do not need to be replaced, only need to be simply adjusted to adapt to the size change of annular workpiece, which can greatly reduce the cost, improve the utilization rate of the detection equipment, can effectively improve the efficiency of quality inspection, and can effectively solve the problems in the background art.

[0005] In order to realize the utility model purpose, the utility model adopts the following technical scheme:

[0006] An inner wall imaging device of different inner diameter annular workpiece, including sensor camera and annular workpiece, the port position of sensor camera is installed with telecentric lens, the side surface of telecentric lens is equipped with point coaxial light source, the port of telecentric lens is installed with adjustable cam barrel, the port of adjustable cam barrel is installed with light path turning prism, the light path turning prism is adapted to be placed in the inner side of annular workpiece.

[0007] Further, the port of the sensor camera is screwed with the telecentric lens.

[0008] Further, the point coaxial light source is screwed and fixed between the telecentric lens and the adjustable cam barrel through a point light embedding rear thimble.

[0009] Further, the telecentric lens and the adjustable cam barrel and the adjustable cam barrel and the light path turning prism are all connected through a threaded structure.

[0010] Further, the sensor camera is one of a CCD sensor camera or a COMS sensor camera.

[0011] Further, the mirror of the light path turning prism is arranged at an angle of 45°.

[0012] Compared with the prior art, the inner wall imaging device suitable for different inner diameter annular workpieces has the following advantages: the inner wall of the annular workpiece can be imaged in batches after the annular workpiece is produced, so that the quality judgment can be facilitated, the hardware does not need to be replaced for annular workpieces with different inner diameters, and clear focusing can be achieved only by simple adjustment, the length of the adjustable cam barrel is adjusted to adapt to the inner wall imaging of annular workpieces with any inner diameter, the cost is greatly reduced, the use rate of the detection equipment is improved, and the efficiency of quality inspection is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] In the figure: 1-sensor camera, 2-point coaxial light source, 3-telecentric lens, 4-adjustable cam barrel, 5-light path turning prism, 6-annular workpiece. DETAILED DESCRIPTION

[0015] The utility model can be explained in detail through the following examples, and the purpose of the utility model is to protect all technical improvements within the scope of the utility model.

[0016] Please refer to Figure 1 The embodiment provides a technical scheme: an inner wall imaging device suitable for different inner diameter annular workpieces, which comprises a sensor camera 1 and an annular workpiece 6, the sensor camera 1 is one of a CCD sensor camera or a COMS sensor camera, a telecentric lens 3 is installed at the port position of the sensor camera 1, a point coaxial light source 2 is arranged on the side surface of the telecentric lens 3, an adjustable cam barrel 4 is installed at the port of the telecentric lens 3, a light path turning prism 5 is installed at the port of the adjustable cam barrel 4, the light path turning prism 5 is adapted to be arranged on the inner side of the annular workpiece 6, and the mirror of the light path turning prism 5 is arranged at an angle of 45°.

[0017] The point coaxial light source 2 emits a light beam, which passes through the telecentric lens 3 and the adjustable cam barrel 4 in turn and is vertically downward, and then, under the refraction of the light path turning prism 5, the light beam irradiates on the inner wall of the annular workpiece 6, and then, under the reflection, the light beam returns to the original path and is captured by the photosensitive chip in the sensor camera 1, thereby forming a clear image. According to the adjustment of the adjustable cam barrel 4 according to the different inner diameter sizes of the annular workpiece 6, the position of the light path turning prism 5 is adjusted by changing the overall length of the cam barrel, so as to achieve the effect of clear focusing.

[0018] The sensor camera 1: converts the optical signal into a digital signal, thereby presenting the details of the shooting target - the inner wall of the annular workpiece 6.

[0019] The point coaxial light source 2: can provide more uniform illumination than traditional light sources, improving the accuracy and reproducibility of machine vision, and has a unique structural advantage for shooting the inner wall of the annular workpiece 6.

[0020] The telecentric lens 3: through the design of telecentric optical path, the magnification of the image obtained will not change within a certain object distance range, and has a wider depth of field range, so that the internal curved surface structure of the annular workpiece 6 can be more clearly and accurately imaged on the sensor camera 1.

[0021] The adjustable cam barrel 4: the overall length of the cam barrel can be changed by rotating and screwing, so as to achieve the purpose of adjusting the optical path in the middle of the light path.

[0022] The light path turning prism 5: through the 45° reflecting mirror, the light path is turned by 90°, and a more reasonable structure is set without affecting the imaging quality.

[0023] The device is erected on a four-axis (X, Y, Z, A) support, and the whole can be translated in X, Y and Z directions and rotated around the center of the device. When working, the device and the annular workpiece 6 are in coaxial position through the X and Y axis modules, the light path turning prism 5 is in the center of the Z axis of the annular workpiece 6 through the Z axis module, the cam barrel is rotated along the screw track through the adjustable cam barrel 4, the length of the cam barrel is changed, so as to change the working distance of the object side, so as to realize clear focusing, and the shooting of the inner wall of the annular workpiece is completed through the cooperation of the camera, lens and light source optical system.

[0024] The port of the sensor camera 1 is threadedly connected with the telecentric lens 3, the point coaxial light source 2 and the telecentric lens 3 are fixed by rotating and tightening through the point light embedding rear top screw, and the telecentric lens 3 and the adjustable cam barrel 4 and the adjustable cam barrel 4 and the light path turning prism 5 are all connected by screw thread structure, which is convenient for installation and disassembly and facilitates replacement of accessories.

[0025] The working principle of the inner wall imaging device capable of adapting to different inner diameter annular workpieces is as follows: the point coaxial light source 2 emits a light beam, the light beam sequentially passes through the telecentric lens 3 and the adjustable cam barrel 4 and vertically downward, then, under the refraction of the light path turning prism 5, the light beam is irradiated on the inner wall of the annular workpiece 6, then, under the reflection, the light beam returns to the original path and is captured by the photosensitive chip in the sensor camera 1, thereby forming a clear image, the adjustable cam barrel 4 is adjusted according to the annular workpiece 6 of different inner diameter sizes, the position of the light path turning prism 5 is adjusted by changing the overall length of the cam barrel, thereby achieving the effect of clear focusing.

[0026] It is worth noting that the components disclosed in the above embodiments are all general standard components or components known to those skilled in the art, and their structures and principles can be known by the technical personnel through technical manuals or through conventional experimental methods.

[0027] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation. For ordinary skilled in the art, the above-mentioned terms can be understood according to specific circumstances the concrete meaning of the utility model in the specific meaning of the utility model, such as rotary connection can be through bearing rotary connection.

[0028] The utility model is not detailed part for prior art, although combining preferred implementation scheme specifically demonstrated and introduced the utility model, the specific implementation this technical scheme method and approach is many, above-mentioned only is the preferred implementation mode of the utility model, but the skilled in the art should understand, in the form and the detail can make various changes to the utility model within the utility model's spirit and scope defined by the appended claims, all are the protection scope of the utility model.

Claims

1. An inner wall imaging device adaptable to annular workpieces of different inner diameters, comprising a sensor camera (1) and an annular workpiece (6), characterized in that: The sensor camera (1) has a telecentric lens (3) installed at its port position. A point coaxial light source (2) is provided on the side of the telecentric lens (3). An adjustable cam cylinder (4) is installed at the port of the telecentric lens (3). An optical path deflection prism (5) is installed at the port of the adjustable cam cylinder (4). The optical path deflection prism (5) is adapted to be placed inside the annular workpiece (6).

2. The inner wall imaging device adaptable to annular workpieces of different inner diameters according to claim 1, characterized in that: The sensor camera (1) is threadedly connected to the telecentric lens (3) at its port.

3. The inner wall imaging device adaptable to annular workpieces of different inner diameters according to claim 1, characterized in that: The point coaxial light source (2) and the telecentric lens (3) are fixed together by tightening the back screw after the point light is embedded.

4. The inner wall imaging device adaptable to annular workpieces of different inner diameters according to claim 1, characterized in that: The telecentric lens (3) and the adjustable cam cylinder (4) and the optical path deflection prism (5) are both connected by threaded structures.

5. The inner wall imaging device adaptable to annular workpieces of different inner diameters according to claim 1, characterized in that: The sensor camera (1) is either a CCD sensor camera or a CMOS sensor camera.

6. The inner wall imaging device adaptable to annular workpieces of different inner diameters according to claim 1, characterized in that: The reflector of the optical path deflection prism (5) is set at a 45° angle.

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