CN118031810A

CN118031810A - Flexible detection equipment and detection method thereof

Info

Publication number: CN118031810A
Application number: CN202410098303.5A
Authority: CN
Inventors: 洪峰; 王广瑞; 王海松; 孙展; 杜中将
Original assignee: Suzhou Aoguan Intelligent Equipment Co ltd
Current assignee: Suzhou Aoguan Intelligent Equipment Co ltd
Priority date: 2024-01-24
Filing date: 2024-01-24
Publication date: 2024-05-14

Abstract

The invention relates to the technical field of automatic detection, and discloses flexible detection equipment, which comprises a rack, wherein a supporting and positioning mechanism for supporting and positioning a workpiece is arranged on the rack, a first range finder is arranged above the supporting and positioning mechanism, and a second range finder is arranged at one side of the first range finder; the first range finder and the second range finder can synchronously move along the X-axis direction and the Z-axis direction, the second range finder can also independently move along the Y-axis direction, and one side of the second range finder is provided with a code sprayer capable of marking on a workpiece. Through the removal of first distancer in X axis direction, can survey the horizontal distance of work piece upper portion edge, if this distance exceeds the error scope, can utilize the code spraying ware to carry out marking mark in corresponding position to through the removal of second distancer in X axis and Y axis direction, can survey the planarization of work piece top surface, and then judge whether the work piece is qualified.

Description

Flexible detection equipment and detection method thereof

Technical Field

The invention relates to the technical field of automatic detection, in particular to flexible detection equipment and a detection method thereof.

Background

In industrial production, in order to ensure the quality and production efficiency of products, workpieces are usually subjected to quality inspection, and problems and defects possibly existing in the production process can be found through the quality inspection, and measures are timely taken to correct and improve, so that the quality and reliability of the products are improved, and the production cost and risk are reduced.

Particularly, the method aims at workpieces with higher matching precision requirements, such as box-type workpieces; the common box body workpiece is formed by enclosing and connecting a bottom plate, a cover plate and two side plates, wherein the bottom plate and the cover plate are relatively distributed on the upper side and the lower side of the side plates (as shown in fig. 6); however, in the production process, errors are inevitably caused due to the influence of the process flow or the processing equipment, and the whole deformation comprises the case of twisting deformation around the axis of the box body, parallelogram deformation (the included angle between two adjacent plates is not 90 degrees) and the like.

In the prior art, a mode of detecting whether errors occur in the box-type workpiece is generally adopted, a ruler is manually adopted to measure the workpiece, and the workpiece is manually identified and judged whether to be qualified or not; however, this method is not only slow in efficiency but also high in error rate, and the deviation between the obtained result and the actual situation is large.

Disclosure of Invention

The invention aims to solve the problem of providing flexible detection equipment, which is characterized in that a first distance meter is used for measuring the horizontal distance of the upper edge of a workpiece, if the horizontal distance exceeds the allowable error range, the horizontal distance is judged to be unqualified, and a mark is marked on the corresponding position of the top of the workpiece by a code sprayer; meanwhile, the second distance measuring instrument can also calculate the planeness of the top surface of the workpiece by measuring the heights of four corners of the top surface of the workpiece; so as to improve the detection efficiency and obtain accurate measurement values.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the flexible detection equipment comprises a rack, wherein a supporting and positioning mechanism for supporting and positioning a workpiece is arranged on the rack, a first distance meter for detecting the horizontal distance of the upper edge of the workpiece is arranged above the supporting and positioning mechanism, and a second distance meter for detecting the height of the top surface of the workpiece is arranged on one side of the first distance meter;

The first range finder and the second range finder can synchronously move along the X-axis direction and the Z-axis direction, the second range finder can also independently move along the Y-axis direction, and one side of the second range finder is provided with a code sprayer capable of marking on a workpiece.

In a preferred embodiment of the invention, one side of the frame is connected with a longitudinal rod capable of moving along the X-axis direction through an X-axis module, and one side of the longitudinal rod is connected with a transverse rod capable of lifting along the Z-axis through a Z-axis module;

The first range finder is fixedly connected with the cross rod through a first bracket, and one side of the cross rod is connected with a second bracket for installing the second range finder and the code sprayer through a Y-axis module.

In a preferred embodiment of the present invention, the X-axis module includes a sliding rail fixedly installed on a side surface of the frame, a rack is disposed on one side of the sliding rail, the rack and the sliding rail are parallel to the X-axis direction, a driving part fixedly connected to the vertical rod is slidably installed on the sliding rail, and a gear engaged with the rack is rotatably installed on an inner side of the driving part.

In a preferred embodiment of the present invention, the supporting and positioning mechanism includes a supporting plate for supporting a workpiece, and a side positioning plate for positioning the workpiece in the Y-axis direction is provided at one side of the supporting plate; the supporting plate is fixedly arranged at the top of the frame, and an end face positioning plate for positioning the workpiece in the X-axis direction is fixedly arranged on the frame.

In a preferred embodiment of the present invention, the side positioning plate and the end positioning plate are both higher than the support plate, and an alignment mechanism capable of attaching the workpiece to the side positioning plate is disposed on a side of the support plate adjacent to the side positioning plate.

In a preferred embodiment of the present invention, the alignment mechanism includes a telescopic assembly parallel to the Y-axis direction, a yoke plate is disposed above the telescopic assembly, one end of the yoke plate is connected to the output end of the telescopic assembly, a push plate is fixedly mounted at the other end of the yoke plate, and the push plate is higher than the support plate.

In a preferred embodiment of the invention, support plates parallel to the Y-axis direction are symmetrically arranged on two sides of the telescopic assembly, and limiting blocks for limiting the moving direction of the connecting plates are arranged on the tops of the support plates.

A method of testing a flexible test device, comprising the steps of:

S1, horizontally placing a workpiece on a supporting plate at the top of a frame, and enabling one side of the workpiece to be abutted against a side positioning plate so as to support and position the workpiece;

S2, adjusting the height of the cross rod by utilizing the Z-axis module, so that the first distance meter and the second distance meter are positioned at proper height positions relative to the workpiece, namely, the first distance meter is aligned to the edge of the upper part of the workpiece;

s3, driving the first distance meter to move from one end of the workpiece to the other end of the workpiece along the X-axis direction by utilizing the X-axis module so as to detect the horizontal distance of the upper edge of the workpiece; if the distance at a certain position exceeds the allowable error range, marking the position of the top surface of the workpiece corresponding to the position by using a code sprayer;

S4, when the first distance measuring instrument moves along the X-axis direction, the Y-axis module is utilized to drive the second distance measuring instrument to move in the Y-axis direction, so that the heights of four corners of the top surface of the workpiece are measured, and the flatness of the top surface of the workpiece is obtained after calculation.

Advantageous effects

(1) According to the invention, the horizontal distance of the upper edge of the workpiece can be measured through the movement of the first distance meter in the X-axis direction, if the distance exceeds the error range, marking can be carried out at the corresponding position by using the code spraying device so as to facilitate the subsequent correction work, and the flatness of the top surface of the workpiece can be measured through the movement of the second distance meter in the X-axis and Y-axis directions, so that whether the workpiece is qualified or not is judged; the device can improve the detection efficiency and obtain more accurate measurement values.

(2) According to the invention, the X-axis module, the Y-axis module and the Z-axis module are utilized, so that synchronous movement of the first distance meter and the second distance meter in the X, Z-axis direction can be realized, and movement of the second distance meter in the Y-axis direction can be realized, so that the device can realize detection of workpieces with different sizes and specifications, and the application range of the device is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic illustration of an axially measured structure of the present invention;

FIG. 3 is a schematic view of the structure of the support positioning mechanism of the present invention;

FIG. 4 is a schematic structural view of the alignment mechanism of the present invention;

FIG. 5 is a schematic view of the assembly of the present invention with a box workpiece;

FIG. 6 is a schematic view of the structure of the box work piece of the present invention;

Wherein, 1, the frame; 11. a housing; 2. a first range finder; 3. a second range finder; 4. a code spraying device; 5. a supporting and positioning mechanism; 51. a support plate; 52. a side positioning plate; 53. an end face positioning plate; 6. an alignment mechanism; 61. a support plate; 62. a telescoping assembly; 63. a yoke plate; 64. a push plate; 65. a limiting block; 71. a longitudinal bar; 72. a cross bar; 73. a Z-axis module; 74. a Y-axis module; 75. a first bracket; 76. a second bracket; 8. an X-axis module; 81. a driving section; 82. a slide rail; 83. a rack; 9. and (5) a box body workpiece.

Detailed Description

The invention will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the invention, which are presented only by way of illustration, and thus show only the structures that are relevant to the invention.

Example 1

As shown in fig. 1-2 and fig. 5, a flexible detecting device includes a frame 1 and a supporting and positioning mechanism 5 disposed on the frame 1, one side of the frame 1 is connected with a vertical rod 71 capable of moving along the X-axis direction through an X-axis module 8, one side of the vertical rod 71 is connected with a cross rod 72 capable of moving along the Z-axis direction through a Z-axis module 73, one side of the cross rod 72 is connected with a second bracket 76 capable of moving along the Y-axis direction through a Y-axis module 74, a second distance meter 3 and a code sprayer 4 are fixedly mounted on the second bracket 76, and a first distance meter 2 is fixedly connected with the cross rod 72 through a first bracket 75.

The code sprayer 4 is located at one side of the second range finder 3, the first range finder 2 and the second range finder 3 can synchronously move along the X-axis and the Z-axis directions, and the second range finder 3 can also independently move along the Y-axis direction; the supporting and positioning of the workpiece on the frame 1 can be realized through the supporting and positioning mechanism 5, along with the movement of the first distance meter 2 in the X-axis direction, the horizontal distance of the upper edge of the workpiece relative to the reference edge can be measured, if the distance exceeds the error range, the workpiece is unqualified, and marks can be marked at the corresponding position of the workpiece through the code sprayer 4 so as to facilitate the subsequent correction work; meanwhile, the second distance measuring instrument 3 can be used for measuring the distances of a plurality of points on the top surface of the workpiece, such as the heights of four corners of the top surface of the workpiece, and then whether the flatness of the top surface is qualified can be obtained through calculation.

Specifically, the vertical rod 71 and the horizontal rod 72 are perpendicular to each other, the horizontal rod 72 and the second support 76 are respectively installed at the output ends of the Z-axis module 73 and the Y-axis module 74, and the Z-axis module 73 and the Y-axis module 74 are all existing linear modules (such as a servo-driven screw nut structure) which can output linear motion from the side, so that the horizontal rod 72 and the second support 76 can move synchronously along the Z-axis direction, and the second support 76 can also move along the Y-axis direction relative to the horizontal rod 72; under the action of the X-axis module 8, the vertical rod 71 and the horizontal rod 72 can move synchronously along the X-axis direction, so that synchronous movement of the first distance meter 2 and the second distance meter 3 along the X-axis direction and the Z-axis direction and independent movement of the second distance meter 3 along the Y-axis direction relative to the first distance meter 2 are realized.

By utilizing the X-axis module 8, the Y-axis module 74 and the Z-axis module 73, synchronous movement of the first distance meter 2 and the second distance meter 3 in the X, Z-axis direction can be realized, movement of the second distance meter 3 in the Y-axis direction can also be realized, detection of workpieces with different sizes can be realized by the device, and the application range of the device is greatly improved.

The workpiece is a box workpiece 9, the reference edge is an edge of the box workpiece 9, which is attached to the bottom plate of the box workpiece 9 and is opposite to the supporting and positioning mechanism 5, the first distance meter 2 and the second distance meter 3 preferably adopt laser distance meters in the prior art, the code spraying device 4 also adopts the prior art, and the code spraying device can mark a line at a designated position according to the instruction of the PLC system so as to mark the position from which the workpiece starts to deform, thereby facilitating the follow-up work correction work of the workpiece; therefore, compared with the traditional manual measurement, the device has higher detection efficiency, and can obtain more accurate measurement values.

Further, the X-axis module 8 includes a sliding rail 82 fixedly mounted on a side surface of the frame 1, a rack 83 is disposed on one side of the sliding rail 82, the rack 83 and the sliding rail 82 are parallel to the X-axis direction, a driving portion 81 fixedly connected to the vertical rod 71 is slidably mounted on the sliding rail 82, and a gear engaged with the rack 83 is rotatably mounted on an inner side of the driving portion 81.

The gear is rotatably connected with the driving part 81 and driven to rotate by the servo motor, and based on the meshing relationship between the gear and the rack 83, when the gear rotates, meshing force acts on the driving part 81 reversely, so that the driving part moves reciprocally along the direction of the sliding rail 82; compared with the existing linear module, the module can bear larger load and stably run.

The two sliding rails 82 may be slidably connected to the driving portion 81, and the two sliding rails 82 may increase the load capacity of the driving portion 81, so as to improve the stability of the X-axis module 8; the rack 83 is also fixedly mounted on the side of the frame 1 and is located between the two slide rails 82, and the slide rails 82 and the rack 83 are parallel to the X-axis direction.

In addition, the one end of frame 1 still is provided with casing 11, and the inside of casing 11 has accomodates the chamber, and when not working, vertical pole 71, horizontal pole 72 and first distancer 2, second distancer 3 and the sign indicating number ware 4 that spouts on it can accomodate in the inside chamber of accomodating of casing 11 along the X axis direction under the effect of X axis module 8 to the protection aforementioned part is prevented from the influence of external factor and is damaged, makes the overall structure of this equipment more pleasing to the eye clean and tidy simultaneously.

As shown in fig. 3 to 4, the supporting and positioning mechanism 5 includes a supporting plate 51 for supporting a workpiece, one side of the supporting plate 51 being provided with a side positioning plate 52 for positioning the workpiece in the Y-axis direction; the support plate 51 is fixedly mounted on the top of the frame 1, and an end surface positioning plate 53 for positioning the workpiece in the X-axis direction is fixedly mounted on the frame 1.

The two support plates 51 are parallel to the Y-axis direction, and are arranged at the position, and the two support plates 51 are equal in height and are relatively distributed at the top of the frame 1 at intervals; each support plate 51 is provided with a side locating plate 52 at one end opposite to the first distance measuring device 2, and an end face locating plate 53 is located at one end of the frame 1 close to the housing 11 and is used for limiting the position of a workpiece in the X-axis direction, so that the workpiece can completely fall on the support plate 51, and interference between one end of the workpiece and other parts of the device is avoided.

Wherein, the side surface locating plate 52 and the end surface locating plate 53 are higher than the supporting plate 51 so as to ensure that the side surface and the end surface of the workpiece bottom plate can respectively lean against the side surface locating plate 52 and the end surface locating plate 53; in the distance measurement, the device uses the bottom plate as a reference, and the reference edge is the edge where the bottom plate is attached to the side positioning plate 52.

When the workpiece is hoisted to the supporting plate 51 by the external hoisting tool, the bottom plate of the workpiece does not necessarily lean against the side locating plate 52, and the alignment mechanism 6 is required to adjust the workpiece to ensure that the reference edge is completely lean against the side locating plate 52.

The alignment mechanism 6 includes a telescopic assembly 62 parallel to the Y-axis direction, a yoke plate 63 is disposed above the telescopic assembly 62, one end of the yoke plate 63 is connected to the output end of the telescopic assembly 62, and a push plate 64 is fixedly mounted at the other end.

Specifically, the telescopic assembly 62 preferably adopts an air cylinder, which is fixedly mounted on the top of the frame 1, and the output end of which is parallel to the Y-axis direction and is connected with a link plate 63, the link plate 63 is located above the telescopic assembly 62 and below the support plate 51, i.e., the link plate 63 is located between the bottom plate of the workpiece and the telescopic assembly 62, and the push plate 64 is higher than the support plate 51.

When the workpiece is not in place, the telescopic assembly 62 is started, the push plate 64 is driven by the connecting plate 63 to contact with one side of the workpiece opposite to the side positioning plate 52, and the workpiece moves on the supporting plate 51 along the Y-axis direction along with the continuous pushing of the output end of the telescopic assembly 62 until the workpiece is completely abutted to the side positioning plate 52, so that the positioning of the workpiece is completed.

The push plate 64 is located above the connecting plate 63 and is opposite to the output end of the telescopic assembly 62, and the connecting plate 63 is located right above the telescopic assembly 62, so that the alignment work can be smoothly realized, the installation space can be saved, and the telescopic assembly 62 is located below the workpiece.

Further, the two sides of the telescopic component 62 are symmetrically provided with support plates 61 parallel to the Y-axis direction, the support plates 61 are fixedly connected with the frame 1, the top of each support plate 61 is provided with a limiting block 65, the connecting plate 63 is also positioned between the two support plates 61 and between the two limiting blocks 65, and the moving direction of the connecting plate 63 can be limited by utilizing a chute formed between the two limiting blocks 65, so that the connecting plate can only move along the Y-axis direction.

The alignment mechanism 6 is located on one side of the support plate 51, and the number of alignment mechanisms 6 corresponds to the number of support plates 51, whereby even if the workpiece is deflected in the horizontal plane, it can be adjusted to an appropriate position by the alignment mechanism 6.

Example two

On the basis of the first embodiment, the invention also provides a detection method of the flexible detection equipment, which comprises the following steps:

S1, horizontally placing a workpiece on a supporting plate 51 at the top of a frame 1, and enabling one side of the workpiece to be abutted against a side positioning plate 52 so as to support and position the workpiece;

S2, adjusting the height of the cross rod 72 by utilizing the Z-axis module 73 to enable the first distance meter 2 and the second distance meter 3 to be at proper height positions relative to the workpiece, namely enabling the first distance meter 2 to be aligned with the edge of the upper part of the workpiece;

S3, driving the first distance meter 2 to move from one end to the other end of the workpiece along the X-axis direction by utilizing the X-axis module 8 so as to detect the horizontal distance of the upper edge of the workpiece; if the distance at a certain place exceeds the allowable range of the error, marking the position of the top surface of the workpiece corresponding to the position by using the code sprayer 4;

s4, when the first distance measuring instrument 2 moves along the X-axis direction, the Y-axis module 74 is utilized to drive the second distance measuring instrument 3 to move in the Y-axis direction, so that the heights of four corners of the top surface of the workpiece are measured, and the flatness of the top surface of the workpiece is obtained after calculation.

After the workpiece is hoisted to the supporting plate 51 through the external hoisting tool, if the workpiece is not abutted to the side locating plate 52, the position of the workpiece can be adjusted through the aligning mechanism 6, so that the workpiece is completely abutted to the supporting plate, and the supporting and locating of the workpiece are completed.

In order to facilitate the detection of the workpieces, each workpiece is provided with an information code (bar code or two-dimensional code) containing the information such as the size and the specification of the workpiece, and after the workpiece is positioned, the information code is scanned by a code scanning gun, so that a control system of the equipment can acquire corresponding workpiece information, and then corresponding program instructions are selected to automatically detect the workpiece.

The first distance measuring instrument 2 and the second distance measuring instrument 3 measure the distance by taking the bottom plate of the workpiece as a reference, and the first distance measuring instrument 2 can be used for measuring the horizontal distance between the upper edge of the workpiece and the reference edge, wherein the horizontal distance is the width of the workpiece cover plate; the vertical distance measured by the second distance measuring instrument 3 is the height of the workpiece, the multi-point detection is carried out on the top surface of the workpiece through the second distance measuring instrument 3, and then the measured values are compared, if the measured values are within the error allowable range, the flatness is qualified; otherwise, if the data of any point position exceeds the error allowable value, the flatness is not qualified.

In a normal state, the box body workpiece 9 is in a square and positive structure; when the measured values of the first distance meter 2 and the second distance meter 3 are within the error allowable range, the workpiece is qualified, otherwise, if the measured value of a certain section exceeds the error allowable value, the workpiece is judged to be unqualified, and marking can be carried out on the distorted part of the workpiece through the code sprayer 4.

To sum up, this equipment not only can replace the manual work to detect the work piece, and degree of automation is high moreover, and application scope is wide, and detection efficiency is high, and the testing result is more accurate, can realize the traceability of work piece testing result moreover, makes things convenient for the later stage to improve production process, improves the qualification rate of work piece production.

The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A flexible test device, characterized by: the automatic positioning device comprises a frame (1), wherein a supporting and positioning mechanism (5) for supporting and positioning a workpiece is arranged on the frame (1), a first distance meter (2) for detecting the horizontal distance of the upper edge of the workpiece is arranged above the supporting and positioning mechanism (5), and a second distance meter (3) for detecting the height of the top surface of the workpiece is arranged on one side of the first distance meter (2);

The first distance measuring instrument (2) and the second distance measuring instrument (3) can synchronously move along the X-axis direction and the Z-axis direction, the second distance measuring instrument (3) can also independently move along the Y-axis direction, and one side of the second distance measuring instrument (3) is provided with a code sprayer (4) capable of marking on a workpiece.

2. The flexible test device of claim 1, wherein: one side of the frame (1) is connected with a longitudinal rod (71) capable of moving along the X-axis direction through an X-axis module (8), and one side of the longitudinal rod (71) is connected with a transverse rod (72) capable of lifting along the Z-axis through a Z-axis module (73);

The first range finder (2) is fixedly connected with the cross rod (72) through a first bracket (75), and one side of the cross rod (72) is connected with a second bracket (76) for installing the second range finder (3) and the code sprayer (4) through a Y-axis module (74).

3. The flexible test device of claim 2, wherein: the X-axis module (8) comprises a sliding rail (82) fixedly mounted on the side face of the frame (1), a rack (83) is arranged on one side of the sliding rail (82), the rack (83) and the sliding rail (82) are parallel to the X-axis direction, a driving part (81) fixedly connected with the vertical rod (71) is mounted on the sliding rail (82) in a sliding manner, and a gear meshed with the rack (83) is mounted on the inner side of the driving part (81) in a rotating manner.

4. The flexible test device of claim 1, wherein: the supporting and positioning mechanism (5) comprises a supporting plate (51) for supporting a workpiece, and a side positioning plate (52) for positioning the workpiece in the Y-axis direction is arranged on one side of the supporting plate (51); the supporting plate (51) is fixedly arranged at the top of the frame (1), and an end face positioning plate (53) for positioning the workpiece in the X-axis direction is fixedly arranged on the frame (1).

5. The flexible test device of claim 4, wherein: the side locating plate (52) and the end face locating plate (53) are higher than the supporting plate (51), and a locating mechanism (6) which enables workpieces to be attached to the side locating plate (52) is arranged on one side, adjacent to the side locating plate (52), of the supporting plate (51).

6. The flexible test device of claim 5, wherein: the alignment mechanism (6) comprises a telescopic assembly (62) parallel to the Y-axis direction, a connecting plate (63) is arranged above the telescopic assembly (62), one end of the connecting plate (63) is connected with the output end of the telescopic assembly (62), a push plate (64) is fixedly arranged at the other end of the connecting plate, and the push plate (64) is higher than the supporting plate (51).

7. The flexible test device of claim 6, wherein: support plates (61) parallel to the Y-axis direction are symmetrically arranged on two sides of the telescopic assembly (62), and limiting blocks (65) used for limiting the moving direction of the connecting plates (63) are arranged on the tops of the support plates (61).

8. A detection method using the flexible detection apparatus according to any one of claims 1 to 7, comprising the steps of:

S1, horizontally placing a workpiece on a supporting plate (51) at the top of a frame (1), and enabling one side of the workpiece to be abutted against a side positioning plate (52) so as to support and position the workpiece;

s2, adjusting the height of the cross rod (72) by utilizing the Z-axis module (73) to enable the first distance meter (2) and the second distance meter (3) to be at proper height positions relative to the workpiece, namely enabling the first distance meter (2) to be aligned with the edge of the upper part of the workpiece;

S3, driving the first distance measuring instrument (2) to move from one end of the workpiece to the other end along the X-axis direction by utilizing the X-axis module (8) so as to detect the horizontal distance of the upper edge of the workpiece; if the distance at a certain position exceeds the allowable range of the error, marking the position of the top surface of the workpiece corresponding to the position by using a code sprayer (4);

S4, when the first distance measuring instrument (2) moves along the X-axis direction, the second distance measuring instrument (3) is driven by the Y-axis module (74) to move in the Y-axis direction, so that the heights of four corners of the top surface of the workpiece are measured, and the flatness of the top surface of the workpiece is obtained after calculation.