Workpiece appearance detection mechanism

Abstract

The utility model relates to the technical field of workpiece detection, in particular to a workpiece appearance detection mechanism which comprises a probe, a jig, an electric box and a correlation type sensor, the probe is installed at the tail end of the Z axis of an XYZ linear motor, magnetic railing rulers are installed on the XYZ linear motor in the X-axis direction, the Y-axis direction and the Z-axis direction, a workpiece is installed on the jig, and the electric box is connected with the correlation type sensor. The correlation type sensors are installed on the two sides of the jig and used for sensing whether a workpiece exists or not. According to the utility model, the XYZ linear motor drives the probe to move and cooperates with the magnetic railing ruler to measure a workpiece, so that a high-precision measurement result can be provided, and the measurement precision can reach a micron level and is far higher than that of traditional measurement tools such as a caliper and a vernier caliper; the device is simple in measurement process, high in measurement precision, low in cost and wide in application range.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection technology, and in particular to a workpiece shape inspection mechanism. Background Technology

[0002] Workpiece shape inspection is a crucial step in manufacturing. Currently, commonly used inspection methods include coordinate measuring machine (CMM) inspection, optical image measuring instruments, displacement sensors, and plug gauge inspection. However, each of these methods has its own limitations.

[0003] Coordinate measuring machines (CMMs) are known for their high precision, but their high price, complex operation, and strict environmental requirements limit their widespread application. Optical image measuring instruments are also expensive and have high requirements for the working environment. For workpieces with complex shapes, their measurement capabilities are limited. Displacement sensors often cannot guarantee the accuracy and efficiency of measurement when measuring multiple workpieces at the same time. Plug gauges are mainly used for measuring hole-type workpieces, and their application range is relatively narrow. Utility Model Content

[0004] This invention solves the problems of high cost and complex operation in related technologies by proposing a workpiece shape detection mechanism. The mechanism uses an XYZ linear motor to drive the probe to move and works in conjunction with a magnetic scale to measure the workpiece. It can provide high-precision measurement results, with a measurement accuracy reaching the micrometer level. The measurement process is simple, the measurement accuracy is high, the cost is low, and the applicability is wide.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a workpiece shape detection mechanism, including a probe, a fixture and an electrical box, wherein the probe is installed at the Z-axis end of an XYZ linear motor, and magnetic scales are installed on the X, Y and Z axes of the XYZ linear motor, a workpiece is installed on the fixture, and a through-beam sensor is installed on both sides of the fixture and is used to sense the presence or absence of the workpiece.

[0006] As a preferred embodiment, the XYZ linear motor includes an X-axis linear motor, a Y-axis linear motor, and a Z-axis linear motor, with the Z-axis linear motor slidably mounted on the X-axis linear motor and the X-axis linear motor slidably mounted on the Y-axis linear motor.

[0007] As a preferred embodiment, the probe is mounted on the Z-axis linear motor via a probe bracket.

[0008] As a preferred embodiment, the magnetic scale includes an X-axis magnetic scale mounted on an X-axis linear motor, a Y-axis magnetic scale mounted on a Y-axis linear motor, and a Z-axis magnetic scale mounted on a Z-axis linear motor.

[0009] As a preferred embodiment, both the fixture and the XYZ linear motor are mounted on a bracket.

[0010] Compared with the prior art, the advantages of this utility model are: this utility model uses an XYZ linear motor to drive the probe to move and cooperates with a magnetic scale to measure the workpiece, which can provide high-precision measurement results. Its measurement accuracy can reach the micron level, which is far higher than traditional measuring tools such as calipers and vernier calipers. This utility model not only has a simple measurement process, high measurement accuracy, and low cost, but also has a wide range of applications. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model (first-person perspective);

[0012] Figure 2 This is a schematic diagram of the overall structure of this utility model (second perspective).

[0013] In the picture:

[0014] 1. Probe, 2. Fixture, 3. XYZ linear motor, 31. X-axis linear motor, 32. Y-axis linear motor, 33. Z-axis linear motor, 4. Magnetic scale, 41. X-axis magnetic scale, 42. Y-axis magnetic scale, 43. Z-axis magnetic scale, 5. Workpiece, 6. Electrical box, 7. Bracket, 8. Probe bracket, 9. Through-beam sensor. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0018] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0019] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0020] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0021] like Figure 1 As shown, a workpiece shape detection mechanism includes a probe 1, a fixture 2, and an electrical box 6. The probe 1 is installed at the Z-axis end of an XYZ linear motor 3. Magnetic scales 4 are installed on the X, Y, and Z axes of the XYZ linear motor 3. A workpiece 5 is installed on the fixture 2. Through-beam sensors 9 are installed on both sides of the fixture 2 and are used to sense the presence or absence of the workpiece 5. The electrical box 6 is used to supply power to the linear motors in this detection mechanism that require electricity.

[0022] In one embodiment, the XYZ linear motor 3 includes an X-axis linear motor 31, a Y-axis linear motor 32, and a Z-axis linear motor 33. The Z-axis linear motor 33 is slidably mounted on the X-axis linear motor 31, and the X-axis linear motor 31 is slidably mounted on the Y-axis linear motor 32.

[0023] In one embodiment, the probe 1 is mounted on the Z-axis linear motor 33 via the probe bracket 8.

[0024] In one embodiment, the magnetic scale 4 includes an X-axis magnetic scale 41 mounted on an X-axis linear motor 31, a Y-axis magnetic scale 42 mounted on a Y-axis linear motor 32, and a Z-axis magnetic scale 43 mounted on a Z-axis linear motor 33.

[0025] In one embodiment, the fixture 2 and the XYZ linear motor 3 are both mounted on the bracket 7, and the electrical box 6 is mounted below the bracket 7.

[0026] The working principle is as follows:

[0027] When workpiece 5 is placed on fixture 2, and the through-beam sensor 9 detects the presence of workpiece 5 on fixture 2, the entire detection mechanism begins to operate. First, the Z-axis linear motor 33 drives probe 1 to a suitable height, and the Z-axis magnetic scale 43 records the distance moved. The Y-axis linear motor 32 drives probe 1 to move in the front-back direction, and the Y-axis magnetic scale 42 records the distance moved. The X-axis linear motor 31 drives probe 1 to move in the left-right direction, and the X-axis magnetic scale 41 records the distance moved. This allows probe 1 to lightly touch the surface of workpiece 5 at multiple positions, and the three magnetic scales record the displacement in each direction. The collected data is then input into the software. After calculation, the software can determine the specific dimensions of workpiece 5 and compare them with the pre-input dimensions of workpiece 5 to detect whether workpiece 5 meets the standards for qualified products.

[0028] The workpiece shape inspection mechanism of this application was used to inspect 10 ring-shaped workpieces, measuring their outer diameter, inner diameter, and thickness. However, the outer diameter of one ring, the inner diameter of another, and the thickness of another were found to be inaccurate. The 10 rings were then randomly placed into the inspection mechanism for testing, and the following inspection results were obtained:

[0029]

[0030] The above experimental results show that this testing mechanism can achieve micron-level detection accuracy.

[0031] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A workpiece shape inspection mechanism, characterized in that: The device includes a probe (1), a fixture (2), an electrical box (6), and a through-beam sensor (9). The probe (1) is installed at the Z-axis end of an XYZ linear motor (3). The XYZ linear motor (3) is equipped with magnetic scales (4) in the X-axis, Y-axis, and Z-axis directions. The fixture (2) has a workpiece (5) installed on it. The through-beam sensor (9) is installed on both sides of the fixture (2) and is used to sense the presence or absence of the workpiece (5).

2. The workpiece shape inspection mechanism according to claim 1, characterized in that: The XYZ linear motor (3) includes an X-axis linear motor (31), a Y-axis linear motor (32) and a Z-axis linear motor (33). The Z-axis linear motor (33) is slidably mounted on the X-axis linear motor (31), and the X-axis linear motor (31) is slidably mounted on the Y-axis linear motor (32).

3. The workpiece shape inspection mechanism according to claim 2, characterized in that: The probe (1) is mounted on the Z-axis linear motor (33) via the probe bracket (8).

4. The workpiece shape inspection mechanism according to claim 2, characterized in that: The magnetic scale (4) includes an X-axis magnetic scale (41) mounted on an X-axis linear motor (31), a Y-axis magnetic scale (42) mounted on a Y-axis linear motor (32), and a Z-axis magnetic scale (43) mounted on a Z-axis linear motor (33).

5. The workpiece shape inspection mechanism according to claim 1, characterized in that: The fixture (2) and the XYZ linear motor (3) are both mounted on the bracket (7).

Images