Auxiliary tool for batch detection of micro parts and detection method

Abstract

The invention provides a small part batch detection auxiliary tool, which comprises a part fixing unit, the part fixing unit comprises a clamping part and a magnetic attraction part, the magnetic attraction part comprises a shell, a magnet can be arranged in the shell, the outer wall of the shell is provided with at least one adsorption surface, and external light can irradiate from one side of the adsorption surface to the other side of the adsorption surface; the clamping part comprises a plurality of V-shaped grooves; and the part placing part comprises a transparent tray, and the tray can be detachably connected with the part fixing unit. According to the optical image measuring instrument, the magnetic attraction part is arranged, so that a plurality of parts can be attracted on the attraction surface at one time, the time of placing the parts on the optical image measuring instrument one by one from a pile of parts by an operator is saved, meanwhile, the purpose of detecting the sizes of the plurality of parts each time is achieved, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of parts detection, and in particular relates to an auxiliary tool and a detection method for batch detection of tiny parts. Background Art

[0002] In the manufacturing process of aviation, some aviation parts have the characteristics of many types, many batches and small quantities. The parts produced by the factory have small sizes of 2mm*2mm*2mm-8mm*8mm*8mm. For such parts, their tolerance size requires high precision and plays an important role in aviation machinery. At present, such parts are generally produced using universal tool microscopes, altimeters, micrometers, lever micrometers and other measuring equipment, and general measuring tools to manually measure each size in turn. Because of its small size, contact measuring equipment such as coordinate measuring machines and profilers are not easy to clamp stably, and optical measuring equipment such as optical axis measuring instruments and optical coordinate measuring machines are not easy to place stably. Moreover, placing parts on optical measuring instruments in turn is not only cumbersome to operate, but also requires high stability of the operator's operation, resulting in a single piece inspection time of more than 15 minutes and low measurement efficiency. The outer contour shape and position tolerance size of such high-precision tiny parts has always been one of the bottlenecks that plague the detection cost and detection accuracy of enterprises, and conventional detection methods are difficult to achieve. Summary of the invention

[0003] In view of this, the present invention aims to provide a micro-part batch detection auxiliary tool and detection method to improve the detection efficiency of micro-parts.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A small parts batch detection auxiliary tool, including

[0006] A part fixing unit, comprising a clamping part and a magnetic attraction part, wherein the magnetic attraction part comprises a shell, a magnet can be placed in the shell, and the outer wall of the shell is provided with at least one adsorption surface, and each adsorption surface, and external light can be irradiated from one side of the adsorption surface to the other side; the clamping part comprises a plurality of V-shaped grooves;

[0007] The parts placement part comprises a transparent tray, and the tray can be detachably connected with the parts fixing unit.

[0008] Furthermore, the edge of the tray extends vertically upward to form a rib.

[0009] Furthermore, a dovetail groove is formed on one outer wall of the retaining edge, and a dovetail block is provided at one end of the part fixing unit, and the dovetail block can be inserted into the dovetail groove.

[0010] Furthermore, the length direction of the dovetail groove is parallel to the bottom surface of the tray.

[0011] Furthermore, the clamping portion includes two supporting arms, and a perspective space is left between the two supporting arms, and the V-shaped groove is opened on the two supporting arms.

[0012] Furthermore, a pressing plate is pressed on the top of the V-shaped groove, and a perspective window corresponding to the perspective space is opened on the pressing plate.

[0013] Furthermore, U-shaped notches are respectively formed at both ends of the pressing plate, and the openings of the two notches are perpendicular to each other.

[0014] Based on the above auxiliary tools, the present application also provides a method for batch detection of tiny parts, including:

[0015] S1. Adsorbing multiple parts onto the adsorption surface through the part fixing unit of the auxiliary tool, and adjusting the positions of the parts so that the postures of the adsorbed parts are in the postures of the first size to be detected and arranged in sequence;

[0016] S2. Place the magnetic suction part of the auxiliary tool with the part adsorbed on the middle of the measuring table of the optical image measuring instrument, and adjust the light source, focal length and field of view of the optical image measuring instrument so that the image of the part in the optical image measuring instrument is clear and the coating is distinct;

[0017] S3. Measure the first dimension to be detected of the part adsorbed on the auxiliary tool by using an optical image measuring instrument.

[0018] Furthermore, the above method also includes

[0019] S4, taking the measured parts off the auxiliary device and putting them into a tray, and adjusting the posture of the parts in the tray to the posture of the second dimension to be detected;

[0020] S5. Place the tray of the auxiliary device in the middle of the measuring table of the optical image measuring instrument, and measure the dimensions of the parts in the tray for the second time through the optical auxiliary device.

[0021] Based on the above auxiliary tools, the present application also provides another method for batch detection of tiny parts, including:

[0022] S1. Insert the cylindrical outer walls of multiple smaller cylindrical parts into the V-shaped groove, and pass the bolts through the notches of the pressing plate so that the lower surface of the pressing plate is tightly pressed against the parts in the V-shaped groove;

[0023] S2. Place the clamping part of the auxiliary tool with the part fixed on the middle of the measuring table of the optical image measuring instrument, and adjust the light source, focal length and field of view of the optical image measuring instrument so that the image of the part in the optical image measuring instrument is clear and the coating is distinct;

[0024] S3. Measure the dimensions of the parts fixed on the auxiliary tool by using an optical image measuring instrument.

[0025] Furthermore, the types and specifications of the parts adsorbed by the part fixing unit are the same.

[0026] Compared with the prior art, the micro-parts batch detection auxiliary tool described in the present invention has the following advantages:

[0027] The present invention adopts the arrangement of the magnetic suction part so as to absorb multiple parts on the suction surface at one time, thereby saving the operator's time of placing the parts one by one from a pile of parts on the optical image measuring instrument, and at the same time achieving the purpose of detecting the dimensions of multiple parts each time, thereby improving the detection efficiency;

[0028] The design of opening multiple V-shaped grooves on the two support arms is adopted to facilitate the fixation and detection of non-magnetic or non-magnetic cylindrical parts. At the same time, a perspective window is opened on the pressure plate to prevent the auxiliary device from affecting the detection;

[0029] Use a transparent tray to facilitate the inspection of parts that are difficult to adsorb or cannot be magnetically attracted;

[0030] The pressure plate is provided with two U-shaped notches, and the opening directions of the two U-shaped notches are vertically arranged, so that the pressure plate can be installed and removed in multiple directions, so that the operator can find a suitable disassembly and assembly method according to his own habits and the characteristics of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the overall structure of the detection auxiliary tool;

[0033] Figure 2 It is a schematic diagram of the exploded structure of the part fixing unit;

[0034] Figure 3 This is a schematic diagram of the state in which the magnetic suction unit absorbs the measuring part;

[0035] Figure 4 This is a schematic diagram of the state of the clamping part fixing the part.

[0036] Description of reference numerals:

[0037] 1-part fixing unit; 11-clamping part; 111-support arm; 112-perspective space; 113-connecting part; 114-V-shaped groove; 115-dovetail block; 12-magnetic suction part; 121-shell; 122-adsorption surface; 2-pressing plate; 21-perspective window; 22-slot; 23-bolt; 3-part placement part; 31-tray; 32-retaining edge; 321-dovetail groove; 4-magnet. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0042] The micro parts batch detection auxiliary tool of the present invention comprises:

[0043] The part fixing unit 1 includes a clamping portion 11 and a magnetic attracting portion 12. The magnetic attracting portion 12 includes a U-shaped housing 121. An operator can put a magnet 4 into or take it out of the housing 121 from the opening of the housing 121. At least one adsorption surface 122 is provided on the outer wall of the housing 121, and external light can irradiate from one side of the adsorption surface 122 to the other side. In this embodiment, there is no occlusion outside the housing 121. Therefore, each outer surface of the U-shaped housing 121 can be used as the adsorption surface 122. The clamping portion 11 includes two support arms 111 extending from the U-shaped housing 121 along the length direction. A perspective space 112 is left between the two support arms 111. A connecting portion 113 is provided at the ends of the two support arms 111 away from the magnetic attracting portion 12, so that the two support arms 111 form an integral body while ensuring the structural strength between the two support arms 111. A plurality of V-shaped grooves 114 are formed on one side of the two support arms 111, and the V-shaped grooves 114 on the two support arms 111 correspond to each other. Screw holes are respectively formed on the end of the housing 121 close to the clamping portion 11 and the connecting portion 113. Each screw hole can be screwed with a bolt 23 respectively. A pressing plate 2 is pressed on the opening of the V-shaped groove 114. U-shaped notches 22 are respectively formed on both sides of the pressing plate 2, and the opening directions of the two notches 22 are perpendicular to each other. The bolt 23 can pass through the notch 22 and be screwed with the screw hole, and the nut of the bolt 23 can tightly press on the upper surface of the pressing plate 2. A perspective window 21 is formed on the pressing plate 2 only. The perspective window 21 corresponds to the perspective space 112, so that light can pass through the perspective window 21 and the perspective space 112 at the same time;

[0044] The part placing portion 3 includes a transparent tray 31. Optionally, it can be made of an acrylic plate, and the tray 31 can be detachably connected to the part fixing unit 1. Specifically, in this embodiment, a baffle 32 extends vertically upward from the edge of the tray 31. A dovetail groove 321 is formed on the outer wall of one side of the baffle 32. A dovetail block 115 is provided at one end of the part fixing unit 1. The dovetail block 115 can be inserted into the dovetail groove 321. In order to facilitate holding the part placing portion 3 by the part fixing unit, the length direction of the dovetail groove 321 is parallel to the bottom surface of the tray 31. After the dovetail block 115 is inserted into the limiting groove, the part fixing unit 1 can be used as a handle to pick up the tray 31, so as to facilitate loading and unloading parts and moving. At this time, the side walls of the dovetail groove 321 and the dovetail block 115 are stressed to prevent the part fixing unit 1 and the part placing portion 3 from separating. In order to facilitate limiting the dovetail block 115, one end of the dovetail groove 321 is blocked and the other end is open, so that the dovetail block 115 can be inserted into the dovetail groove 321 from the open end and abutted against the blocked end. When the tray 31 is not needed, the tray 31 can also be removed.

[0045] The micro-part batch detection auxiliary tool described in the present invention is used for micro-parts in the process of optical image measurement. During use, the transparent acrylic tray 31 can prevent the measurement process from affecting the bottom light source perspective of the measuring tool, because the measurement accuracy of the bottom light source is much higher than that of the upper light source measurement, so this auxiliary tool can avoid reducing the measurement accuracy during work. The retaining edge 32 on the edge of the tray 31 is used to protect the parts. Micro-parts not larger than 10mm*10mm*10mm can prevent the parts from rolling and being lost. During use, several parts can be placed on the tray 31 at the same time, as long as the parts are separated from each other, so as to facilitate the simultaneous measurement of multiple parts. A magnet 4 is placed in the shell 121 so that the adsorption surface 122 of the shell 121 can adsorb multiple micro-parts, and the automatic measurement program compiled by the optical image measuring instrument is used to complete batch synchronous detection. The V-shaped groove 114 on the clamping part 11 can clamp the flat elongated cylindrical parts, and at the same time, the perspective space 112 allows the low light of the optical measuring instrument to pass through the auxiliary tool to improve the detection accuracy. In the process of using the V-shaped groove 114, when facing the parts that cannot be exposed to the strong magnetic field, the magnet 4 in the shell 121 can be removed first. When the magnetic attraction part 12 is used for work, the clamping part 11 can be used as a handle, and when the holding part is used for work, the magnetic attraction part 12 can be used as a handle.

[0046] Based on the above auxiliary tools, the present application also provides a method for batch detection of tiny parts, which is used to detect tiny parts that can be magnetically attracted, including:

[0047] S1. Multiple parts are adsorbed on the adsorption surface 122 by the part fixing unit 1 of the auxiliary tool, and the positions of the parts are adjusted so that the posture of the adsorbed parts is in the posture of the size to be detected for the first time, and the parts are arranged in sequence along the length direction of the magnetic attraction part 12. For example, when the size to be detected for the first time is the outer diameter of the part, the posture of the parts is adjusted by tools such as tweezers so that the end face of the part is close to the adsorption surface 122;

[0048] S2, placing the magnetic suction part 12 of the auxiliary tool with the parts adsorbed on the middle of the measuring table of the optical image measuring instrument, and adjusting the light source, focal length and field of view of the optical image measuring instrument so that the image of each part to be measured in the optical image measuring instrument is clear and the coating is distinct;

[0049] S3. Use the optical image measuring instrument to measure the first size of the part adsorbed on the auxiliary tool. The user of the optical image measuring instrument should know that during the use of the optical image measuring instrument, automatic dimming and manual dimming need to be combined to achieve the best visual clarity; when facing tiny parts, a small field of view should be selected for measurement. At the same time, when registering the pattern, axial symmetry must be avoided to prevent the equipment from accurately identifying the part features, causing misjudgment and affecting the measurement results; the establishment of the benchmark must be consistent with the requirements of the part drawing, and at the same time, the part features must be accurately collected to provide a practical basis for the measurement results; ensure the rationality and accuracy of the point selection, such as the straight line needs to collect more than 2 / 3 of the length of the feature, and the circular feature needs at least four points evenly distributed; during the measurement process, the measurement environment should remain stable, without sudden heavy shocks and vibrations, and without strong light interference. Ensure that the workpiece, workbench, and equipment objective lens are clean without a lot of dust and foreign matter, and the parts must be free of burrs;

[0050] After completing the first dimensional measurement, the following steps may also be included depending on the part inspection needs:

[0051] S4, taking the measured part from the auxiliary device and placing it in the tray 31, and adjusting the posture of the part in the tray 31 to the posture of the second size to be detected. If the second size to be detected is the inner hole diameter of the part, the part can be adjusted to be placed vertically in the tray 31 so that the light from the lower light source is emitted through the inner hole;

[0052] S5. Place the tray 31 of the auxiliary device in the middle of the measuring table of the optical image measuring instrument, and measure the dimensions of the parts in the tray 31 for the second time by using the optical auxiliary device.

[0053] Based on the above auxiliary tools, the present application also provides another method for batch detection of tiny parts for detecting cylindrical parts or parts that are not easy to be magnetically attracted, including

[0054] S1, insert the cylindrical outer walls of multiple smaller cylindrical parts into the V-shaped groove 114, and pass the bolts 23 through the notch 22 of the pressing plate 2 so that the lower surface of the pressing plate 2 is tightly pressed on the parts in the V-shaped groove 114;

[0055] S2. Place the clamping part 11 of the auxiliary tool with the part fixed on it in the middle of the measuring table of the optical image measuring instrument, and adjust the light source, focal length and field of view of the optical image measuring instrument so that the image of the part in the optical image measuring instrument is clear and the coating is distinct;

[0056] S3. Measure the dimensions of the parts fixed on the auxiliary tool using an optical image measuring instrument.

[0057] In a single test, in order to facilitate the setting of the testing equipment, the types and specifications of the parts adsorbed by the part fixing unit 1 are the same. If the conditions are met, the types and specifications of the parts can also be different.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A small parts batch detection auxiliary tool, characterized by: include A part fixing unit, comprising a clamping part and a magnetic attraction part, wherein the magnetic attraction part comprises a shell, a magnet can be placed in the shell, and the outer wall of the shell is provided with at least one adsorption surface, and each adsorption surface, and external light can be irradiated from one side of the adsorption surface to the other side; the clamping part comprises a plurality of V-shaped grooves; The parts placement part comprises a transparent tray, and the tray can be detachably connected with the parts fixing unit.

2. The micro parts batch detection auxiliary tool according to claim 1, characterized in that: The edge of the tray extends vertically upward to form a rib.

3. The micro parts batch detection auxiliary tool according to claim 2 is characterized in that: A dovetail groove is formed on one outer wall of the retaining edge, and a dovetail block is provided at one end of the part fixing unit, and the dovetail block can be inserted into the dovetail groove.

4. The micro parts batch detection auxiliary tool according to claim 3 is characterized by: The length direction of the dovetail groove is parallel to the bottom surface of the tray.

5. The micro parts batch detection auxiliary tool according to claim 1, characterized in that: The clamping part includes two supporting arms, and a perspective space is left between the two supporting arms, and the V-shaped groove is opened on the two supporting arms.

6. The micro parts batch detection auxiliary tool according to claim 5, characterized in that: A pressing plate is also covered on the V-shaped groove, and a perspective window corresponding to the perspective space is opened on the pressing plate.

7. The micro parts batch detection auxiliary tool according to claim 5, characterized in that: The two ends of the pressing plate are respectively provided with U-shaped notches, and the openings of the two notches are perpendicular to each other.

8. A method for batch detection of tiny parts, characterized in that: include S1. Adsorbing a plurality of parts onto an adsorption surface by means of a part fixing unit of the measuring auxiliary tool according to any one of claims 1 to 7, and adjusting the positions of the parts so that the postures of the adsorbed parts are in the postures of the dimensions to be detected for the first time, and the parts are arranged in sequence along the length direction of the adsorption surface; S2. Place the magnetic suction part of the auxiliary tool with the part adsorbed on the middle of the measuring table of the optical image measuring instrument, and adjust the light source, focal length and field of view of the optical image measuring instrument so that the image of the part in the optical image measuring instrument is clear and the coating is distinct; S3. Measure the first dimension to be detected of the part adsorbed on the auxiliary tool by using an optical image measuring instrument.

9. A method for batch detection of tiny parts according to claim 8, characterized in that: Also includes S4, taking the measured parts off the auxiliary device and putting them into a tray, and adjusting the posture of the parts in the tray to the posture of the second dimension to be detected; S5. Place the tray of the auxiliary device in the middle of the measuring table of the optical image measuring instrument, and measure the dimensions of the parts in the tray for the second time through the optical auxiliary device.

10. A method for batch detection of tiny parts, characterized in that: include S1. Insert the cylindrical outer walls of a plurality of smaller cylindrical parts into the V-shaped groove of the detection auxiliary tool described in claims 1-7; S2. Place the clamping part of the auxiliary tool with the part fixed on the middle of the measuring table of the optical image measuring instrument, and adjust the light source, focal length and field of view of the optical image measuring instrument so that the image of the part in the optical image measuring instrument is clear and the coating is distinct; S3. Measure the dimensions of the parts fixed on the auxiliary tool by using an optical image measuring instrument.

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