CN114485406A - Part size measuring device and measuring method - Google Patents
Part size measuring device and measuring method Download PDFInfo
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- CN114485406A CN114485406A CN202210144224.4A CN202210144224A CN114485406A CN 114485406 A CN114485406 A CN 114485406A CN 202210144224 A CN202210144224 A CN 202210144224A CN 114485406 A CN114485406 A CN 114485406A
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- 238000000034 method Methods 0.000 title claims description 16
- 238000001514 detection method Methods 0.000 claims description 35
- 238000005259 measurement Methods 0.000 claims description 21
- 238000007689 inspection Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a part size measuring device: comprises a frame body and a measuring component; the frame body comprises a top plate, a support and a bottom plate, wherein the bottom plate is provided with a positioning seat, and the positioning seat is provided with a positioning groove for accommodating a part; the measuring assembly comprises a PLC (programmable logic controller), a first measuring unit, a second measuring unit and an alarm unit, wherein a supporting rod is arranged on the positioning seat, and the first measuring unit is connected to the supporting rod and used for measuring a reference point at the lower end of the part; the number of the second measuring units is at least three, the second measuring units are distributed on the top plate at intervals and are used for measuring a plurality of detecting points at the top of the part; the first measuring unit and the second measuring unit simultaneously measure corresponding positions to be detected on the part, measured data are transmitted to the PLC, the PLC compares the received data with the database, and if the measured data are out of the tolerance range, the alarm unit is controlled to give an alarm. The device is convenient to operate, high in efficiency, accurate in measuring result, simple in structure, low in cost and suitable for wide popularization.
Description
Technical Field
The invention relates to the technical field of checking tools, in particular to a part size measuring device and a part size measuring method.
Background
Precision machines are typically assembled from thousands of small parts, operating with a precise fit between the parts, and a defect in any one part can affect the proper operation of the machine. In order to avoid affecting the performance of precision machinery, the machining requirements of some parts are very strict, and the size of the machined part is required to meet the requirements, so that the next step of size detection is required after the machining of the parts is finished.
The measurement and detection of the part size are generally carried out in two ways, one is carried out by means of manual measurement, and the other is carried out by means of intelligent measuring equipment of the part size. The manual detection is usually to detect the part by using a detection tool (such as a vernier caliper and a clearance gauge), and the detection method is easily affected by the experience of a detection worker, has uncertainty, is low in detection efficiency, time-consuming and labor-consuming, is only suitable for the situation of spot inspection, and is difficult to complete the detection of some parts requiring 100% quality inspection. And if carry out part size detection through part size intelligent measurement equipment, not only detection efficiency promotes by a wide margin, and detection quality also can obtain guaranteeing moreover. However, the cost of the equipment is higher, and for a factory with only a few kinds of parts needing comprehensive quality inspection, the distributed production cost is too high, which is not beneficial to popularization.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the part size measuring device is accurate in measurement, high in efficiency, simple in structure and low in cost.
The technical solution of the present invention is to provide a part dimension measuring device having the following structure: comprises a frame body and a measuring component;
the frame body comprises a top plate, a support and a bottom plate which are sequentially connected from top to bottom, and the top plate, the support and the bottom plate enclose to form a detection space; the bottom plate is provided with a positioning seat, and the positioning seat is provided with a positioning groove for accommodating a part;
the measuring assembly comprises a PLC controller, a first measuring unit, a second measuring unit and an alarm unit, wherein the PLC controller is respectively and electrically connected with the first measuring unit, the second measuring unit and the alarm unit; the positioning seat is provided with a supporting rod which extends vertically upwards, and the first measuring unit is connected to the supporting rod and used for measuring a reference point at the lower end of the part; the number of the second measuring units is at least three, the second measuring units are distributed on the top plate at intervals and are used for measuring a plurality of detecting points at the top of the part; the first measuring unit and the second measuring unit simultaneously measure corresponding positions to be detected on the part, measured data are transmitted to the PLC, the PLC compares the received data with the database, and if the measured data are out of the tolerance range, the alarm unit is controlled to give an alarm.
After adopting the structure, compared with the prior art, the part size measuring device has the following advantages:
after a part to be detected is placed in the positioning groove, the first measuring unit measures a reference point at the lower end of the part, the second measuring unit measures a plurality of detection points at the top of the part, the first measuring unit and the second measuring unit transmit measured data to the PLC, the PLC calculates the received data and compares the data with the database, and if the measured data are out of the tolerance range, the PLC controls the alarm unit to alarm. The device is convenient to operate, high in efficiency, accurate in measuring result, simple in structure, low in cost and suitable for wide popularization.
Preferably, the positioning seat is provided with a guide groove extending along the length direction of the positioning seat, one end of the guide groove is communicated with the positioning groove, and the other end of the guide groove penetrates through one side wall of the positioning seat to form an opening. The part to be detected is put into the guide way from the opening part to push inwards along the guide way, and the part can be positioned when falling into the positioning groove, so that the operation is simple and convenient.
Preferably, the support is four upright posts, the lower ends of the upright posts are connected to four corners of the bottom plate, guide rods extending vertically and upwards are arranged at the tops of the upright posts, through holes for the guide rods to pass through are formed in the top plate, and the guide rods pass through the corresponding through holes and enable the top plate to be connected to the guide rods in a sliding mode. After setting up like this, the four sides in detection space all are the fretwork form, make things convenient for the workman to observe and take and put and wait to detect the part.
Preferably, a rubber positioning ring is sleeved below the top plate on the guide rod and is in interference fit with the guide rod, and the outer diameter of the rubber positioning ring is larger than the inner diameter of the through hole. Therefore, the height of the top plate can be adjusted by adjusting the position of the rubber positioning ring, and the height of the second measuring unit on the top plate is further adjusted.
Preferably, the upper end of the supporting rod is circumferentially and rotatably connected with a first mounting seat, and the first measuring unit is mounted on the first mounting seat; the roof is provided with a plurality of arc-shaped slide rails which are distributed at intervals and arranged concentrically, each arc-shaped slide rail is connected with a second mounting seat in a sliding mode, and the second measuring units are mounted on the corresponding second mounting seats. After the arrangement, the measuring angles of the first measuring unit and the second measuring unit can be conveniently adjusted, so that the measuring requirements of different parts are met.
Preferably, the first measuring unit and the second measuring unit are both point-distance laser ranging sensors.
The invention also provides a measuring method applying the part size measuring device, which comprises the following steps:
step 1, positioning a detection tool; adjusting the position and the angle of a corresponding point distance laser ranging sensor according to the measurement requirements of the part;
step 2, calibrating the checking fixture; placing a reference piece into the positioning groove, and performing zero calibration and vertical linear calibration on the distance between each point and the laser ranging sensor;
step 3, measuring parts; during normal measurement, the reference part is taken out and stored firstly, then the parts are placed at the measuring positions in the positioning grooves, the PLC receives data measured by the point-distance laser ranging sensors, calculation and comparison are carried out according to the standard of the reference part, whether the data are qualified or not is judged, the data are recorded, if the data are not qualified, the alarm unit is controlled to give an alarm, and the detection process is repeated until all the parts are detected completely.
Compared with the prior art, the measuring method has the following advantages:
the position and the angle of the corresponding point distance laser ranging sensor are adjusted to position the checking fixture, so that different measurement requirements of different parts can be met, and the requirements of customers are met; the checking fixture is calibrated by measuring the reference part and comparing the reference part with the database, so that the accuracy of the measuring result is ensured; the PLC calculates and compares the received data according to the standard of the reference part, and can quickly judge whether the size of the part meets the standard. The measuring method is simple to operate, accurate in measurement, capable of detecting the sizes of the parts in batches, capable of achieving hundred-percent detection of the parts, high in detection efficiency, capable of saving detection time and capable of reducing labor cost.
Preferably, the repeated measurement accuracy of the point distance laser ranging sensor in step 1 is 0.002 mm. Therefore, subsequent measurement precision can be ensured, and repeated positioning and calibration of the detection tool are not required.
Preferably, the distance between the point in step 2 and the detection point on the reference member is 65mm ± 15 mm. The distance range is the optimal measuring distance range of the point to the laser ranging sensor, and the measuring accuracy can be guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the bottom plate of the present invention.
Fig. 3 is a schematic structural view of the top plate of the present invention.
Fig. 4 is a schematic structural view of the stent of the present invention.
Description of reference numerals:
1. roof, 2, support, 3, bottom plate, 4, detection space, 5, positioning seat, 6, constant head tank, 7, first measuring unit, 8, second measuring unit, 9, bracing piece, 10, guide way, 11, opening, 12, stand, 13, guide arm, 14, through-hole, 15, rubber holding ring, 16, first mount pad, 17, arc slide rail, 18, second mount pad, 19, part.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus are not to be construed as limiting the present invention, and the terms "first", "second", etc. are only names for distinguishing parts and have no primary or secondary relationship, and thus are not to be construed as limiting the present invention.
As shown in fig. 1, 2, 3 and 4;
the invention discloses a part size measuring device, which comprises: comprises a frame body and a measuring component;
the support body includes roof 1, support 2 and bottom plate 3 that top-down connects gradually, and roof 1, support 2 and bottom plate 3 enclose to close and form a detection space 4. A positioning seat 5 is arranged on the bottom plate 3, and a positioning groove 6 for accommodating the part 19 is arranged on the positioning seat 5; the positioning seat 5 is provided with a guide groove 10 extending along the length direction of the positioning seat, one end of the guide groove 10 is communicated with the positioning groove 6, and the other end of the guide groove 10 penetrates through one side wall of the positioning seat 5 to form an opening 11; the support bar 9 is located at a side remote from the opening 11. The part 19 to be detected is placed into the guide groove 10 from the opening 11 and pushed inwards along the guide groove 10 until the part 19 falls into the positioning groove 6, so that the part 19 can be positioned, and the operation is simple and convenient.
The measuring component comprises a PLC (programmable logic controller) (not shown in the figure), a first measuring unit 7, a second measuring unit 8 and an alarm unit (not shown in the figure), and the PLC is respectively connected with the first measuring unit 7, the second measuring unit 8 and the alarm unit through wires. The first measuring unit 7 and the second measuring unit 8 are both point distance laser ranging sensors, which are the prior art and therefore will not be described in detail; the alarm unit may be a buzzer or a voice alarm, which is also known in the art and therefore will not be described in detail. The positioning seat 5 is provided with a supporting rod 9 extending vertically upwards, and the first measuring unit 7 is connected to the supporting rod 9 and is used for measuring a reference point at the lower end of the part 19. The second measuring units 8 are three and spaced apart on the top plate 1 for measuring three customer-specified test points on top of the part 19. The first measuring unit 7 and the second measuring unit 8 measure the corresponding positions to be detected on the part 19 at the same time, measured data are transmitted to the PLC, the PLC calculates the received data and compares the calculated data with the database, and if the measured data are out of the tolerance range, the PLC controls the alarm unit to alarm. The device is convenient to operate, high in efficiency, accurate in measuring result, simple in structure, low in cost and suitable for wide popularization.
The support 2 is four upright posts 12, the lower ends of the upright posts 12 are connected to four corners of the bottom plate 3, guide rods 13 extending vertically and upwards are arranged at the tops of the upright posts 12, through holes 14 for the guide rods 13 to pass through are formed in the top plate 1, the guide rods 13 pass through the corresponding through holes 14, and the top plate 1 is connected to the guide rods 13 in a sliding mode. The rubber positioning ring 15 is sleeved below the top plate 1 on the guide rod 13, the rubber positioning ring 15 is in interference fit with the guide rod 13, the outer diameter of the rubber positioning ring 15 is larger than the inner diameter of the through hole 14, the height of the top plate 1 can be adjusted by adjusting the position of the rubber positioning ring 15, and then the height of the second measuring unit 8 on the top plate 1 is adjusted. Set up support 2 and be four stands 12, can make the four sides that detect space 4 all be the fretwork form, make things convenient for the workman to observe and take and put and wait to detect part 19.
The upper end of the supporting rod 9 is connected with a first mounting seat 16 in a circumferential rotation mode, and the first measuring unit 7 is mounted on the first mounting seat 16. The top plate 1 is provided with a plurality of arc-shaped slide rails 17 which are distributed at intervals and arranged concentrically, each arc-shaped slide rail 17 is connected with a second mounting seat 18 in a sliding mode, and the second measuring unit 8 is mounted on the corresponding second mounting seat 18. Therefore, the measuring angles of the first measuring unit 7 and the second measuring unit 8 can be conveniently adjusted to meet the measuring requirements of different parts 19.
The invention also provides a measuring method applying the part size measuring device, which comprises the following steps:
step 1, positioning a detection tool; adjusting the position and angle of the corresponding point distance laser ranging sensor according to the measurement requirements of the part 19; wherein the repeated measurement precision of the point distance laser ranging sensor is 0.002 mm;
step 2, calibrating the checking fixture; placing a reference piece into the positioning groove 6, and performing zero calibration and vertical linear calibration on the distance between each point and the laser ranging sensor; wherein, the distance between the point and the laser ranging sensor and the detection point on the reference part is 65mm +/-15 mm, which is the optimal measurement range;
step 3, measuring parts; during normal measurement, the reference part is taken out and stored, then the part 19 is placed at the measuring position in the positioning groove 6, the PLC receives data measured by the laser ranging sensors at each point, calculation and comparison are carried out according to the standard of the reference part, whether the data are qualified or not is judged, the data are recorded, if the data are not qualified, the alarm unit is controlled to give an alarm, and the detection process is repeated until all parts are detected completely.
Compared with the prior art, the measuring method has the following advantages:
the position and the angle of the corresponding point distance laser ranging sensor are adjusted to position the checking fixture, so that different measurement requirements of different parts 19 can be met, and the requirements of customers are met; the checking fixture is calibrated by measuring the reference part and comparing the reference part with the database, so that the accuracy of the measuring result is ensured; the PLC calculates and compares the received data according to the standard of the reference part, and can quickly judge whether the size of the part 19 meets the standard. The measuring method is simple to operate and accurate in measurement, can be used for detecting the sizes of the parts 19 in batches, achieves 19-hundred-percent detection of the parts, is high in detection efficiency, can save detection time and can reduce labor cost. The repeated measurement precision of the point-to-point laser ranging sensor is set to be 0.002mm, so that the subsequent measurement precision can be ensured, and repeated positioning and calibration of the checking fixture are not needed. The distance between the point distance laser ranging sensor and a detection point on the reference part is 65mm +/-15 mm, which is the optimal measuring distance range of the point distance laser ranging sensor and can ensure the measuring accuracy.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention shall be subject to the claims.
Claims (9)
1. A part size measuring device is characterized in that: comprises a frame body and a measuring component;
the frame body comprises a top plate (1), a support (2) and a bottom plate (3) which are sequentially connected from top to bottom, and the top plate (1), the support (2) and the bottom plate (3) enclose to form a detection space (4); a positioning seat (5) is arranged on the bottom plate (3), and a positioning groove (6) for accommodating a part (19) is formed in the positioning seat (5);
the measuring assembly comprises a PLC controller, a first measuring unit (7), a second measuring unit (8) and an alarm unit, wherein the PLC controller is electrically connected with the first measuring unit (7), the second measuring unit (8) and the alarm unit respectively; a supporting rod (9) extending vertically upwards is arranged on the positioning seat (5), and the first measuring unit (7) is connected to the supporting rod (9) and used for measuring a reference point at the lower end of the part (19); the number of the second measuring units (8) is at least three, the second measuring units are distributed on the top plate (1) at intervals and are used for measuring a plurality of detection points at the top of the part (19); the first measuring unit (7) and the second measuring unit (8) measure corresponding positions to be detected on the part (19) at the same time, measured data are transmitted to the PLC, the PLC compares the received data with the database, and if the measured data are out of the tolerance range, the PLC controls the alarm unit to alarm.
2. A part dimension measuring device according to claim 1, wherein: the positioning seat (5) is provided with a guide groove (10) extending along the length direction of the positioning seat, one end of the guide groove (10) is communicated with the positioning groove (6), and the other end of the guide groove penetrates through one side wall of the positioning seat (5) to form an opening (11).
3. A part dimension measuring device according to claim 2, wherein: the support (2) is four stand columns (12), the lower ends of the stand columns (12) are connected to the four corners of the bottom plate (3), guide rods (13) extending vertically and upwards are arranged at the tops of the stand columns (12), through holes (14) for the guide rods (13) to pass through are formed in the top plate (1), the guide rods (13) pass through the corresponding through holes (14), and the top plate (1) is connected to the guide rods (13) in a sliding mode.
4. A part dimension measuring device according to claim 3, wherein: the rubber positioning ring is sleeved below the top plate (1) on the guide rod (13), the rubber positioning ring (15) is in interference fit with the guide rod (13), and the outer diameter of the rubber positioning ring (15) is larger than the inner diameter of the through hole (14).
5. A part dimension measuring device according to claim 1, wherein: the upper end of the supporting rod (9) is connected with a first mounting seat (16) in a circumferential rotating mode, and the first measuring unit (7) is mounted on the first mounting seat (16); the roof (1) is provided with a plurality of arc-shaped slide rails (17) which are distributed at intervals and arranged concentrically, each arc-shaped slide rail (17) is connected with a second mounting seat (18) in a sliding mode, and the second measuring unit (8) is mounted on the corresponding second mounting seat (18).
6. A part dimension measuring device according to claim 5, wherein: the first measuring unit (7) and the second measuring unit (8) are point-distance laser ranging sensors.
7. A measuring method of the part dimension measuring apparatus according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
step 1, positioning a detection tool; according to the measurement requirements of the part (19), adjusting the position and the angle of the corresponding point distance laser ranging sensor;
step 2, calibrating the checking fixture; placing the reference piece into a positioning groove (6), and performing zero calibration and vertical linear calibration on the distance between each point and the laser ranging sensor;
step 3, measuring parts; during normal measurement, the reference part is taken out and stored, then the part (19) is placed at the measuring position in the positioning groove (6), the PLC receives data measured by the point-to-point distance laser ranging sensors, calculation and comparison are carried out according to the standard of the reference part, whether the data are qualified or not is judged, the data are recorded, if the data are not qualified, the alarm unit is controlled to give an alarm, and the detection process is repeated until all the parts (19) are detected completely.
8. A measuring method of a part dimension measuring apparatus according to claim 7, characterized in that: the repeated measurement precision of the point distance laser ranging sensor in the step 1 is 0.002 mm.
9. A measuring method of a part dimension measuring apparatus according to claim 7, characterized in that: and the distance between the point in the step 2 and the detection point on the reference member is 65mm +/-15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210144224.4A CN114485406A (en) | 2022-02-17 | 2022-02-17 | Part size measuring device and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210144224.4A CN114485406A (en) | 2022-02-17 | 2022-02-17 | Part size measuring device and measuring method |
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| CN114485406A true CN114485406A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210144224.4A Pending CN114485406A (en) | 2022-02-17 | 2022-02-17 | Part size measuring device and measuring method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716070A (en) * | 2015-04-03 | 2015-06-17 | 合肥京东方光电科技有限公司 | Dimension detection device and substrate loading device |
| US20180231371A1 (en) * | 2015-08-10 | 2018-08-16 | Wisetech Global Limited | Volumetric estimation methods, devices, & systems |
| CN208606719U (en) * | 2018-07-23 | 2019-03-15 | 安徽绿矽智能制造科技有限公司 | A kind of disk-like accessory flexibility on-line measuring device |
| CN110863859A (en) * | 2019-11-27 | 2020-03-06 | 山东科技大学 | High-precision monitoring and early warning system and method for deformation of top plate |
| CN111854612A (en) * | 2020-08-25 | 2020-10-30 | 陕西国瑞信息技术有限公司 | Automatic material size measuring device and method for conveying device |
-
2022
- 2022-02-17 CN CN202210144224.4A patent/CN114485406A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716070A (en) * | 2015-04-03 | 2015-06-17 | 合肥京东方光电科技有限公司 | Dimension detection device and substrate loading device |
| US20180231371A1 (en) * | 2015-08-10 | 2018-08-16 | Wisetech Global Limited | Volumetric estimation methods, devices, & systems |
| CN208606719U (en) * | 2018-07-23 | 2019-03-15 | 安徽绿矽智能制造科技有限公司 | A kind of disk-like accessory flexibility on-line measuring device |
| CN110863859A (en) * | 2019-11-27 | 2020-03-06 | 山东科技大学 | High-precision monitoring and early warning system and method for deformation of top plate |
| CN111854612A (en) * | 2020-08-25 | 2020-10-30 | 陕西国瑞信息技术有限公司 | Automatic material size measuring device and method for conveying device |
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