CN113155064B - Detection device for detecting hemispherical parts by magnetic clamping - Google Patents
Detection device for detecting hemispherical parts by magnetic clamping Download PDFInfo
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- CN113155064B CN113155064B CN202110145712.2A CN202110145712A CN113155064B CN 113155064 B CN113155064 B CN 113155064B CN 202110145712 A CN202110145712 A CN 202110145712A CN 113155064 B CN113155064 B CN 113155064B
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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Abstract
The invention discloses a detection device for detecting hemispherical parts by magnetic clamping. The device comprises a detection substrate (1), a threaded connecting shaft (2), a magnetic clamping block (3), a pressing plate (4), a support column (5), a leaning block (6) and a three-coordinate measuring machine flat plate (7). The detection substrate (1) is an installation foundation of a part, a plurality of thread locating holes are machined on the upper surface of the detection substrate according to part locating requirements, the thread connecting shaft (2) is located on the detection substrate (1) through thread connection, the hemispherical part is placed on the thread connecting shaft (2), and the magnetic clamping block (3) is fixedly connected with the thread connecting shaft (2) through magnetic force, so that the position of the part is relatively fixed. The detection substrate (1) is attached to the abutting block (6), and the pressing plate (4) is matched with the supporting column (5) to press the detection substrate (1). The relative position of the detection substrate (1) on the three-coordinate measuring machine flat plate (7) is ensured, so that the purpose of ensuring the tight clamping of parts and the position fixing of the detection device is achieved.
Description
Technical Field
The invention relates to a detection device for detecting hemispherical parts by magnetic clamping, in particular to a research on a detection device for detecting hemispherical parts by magnetic clamping, and belongs to the field of aerospace navigation application.
Background
The hemispherical part is a hemispherical bearing coupling part for the motor bearing, the surface of the part is plated with a TiN+DLC film layer, and the precision and the service life of the motor are directly determined by the spherical profile degree (sphericity for short) and the dimensional precision. The higher the sphericity is, the smaller the start-stop friction moment of the motor is, the higher the stability and service life of the motor are, and the lower the sphericity is, the worse the start-stop service life and operation stability are; theoretically, the smaller the working gap of the motor bearing is, the larger the air bearing pressure of the bearing is, and the stronger the bearing capacity of the bearing is. The sphericity and play of the ball coupling are thus the main factors affecting the performance of the motor.
The hemispherical part has higher size and shape and position precision, the surface of the hemispherical part is plated with a TiN film layer and a TiN+DLC film layer, the sphericity of a part matrix is required to be less than 1 mu m before film plating, and the surface roughness Ra0.025 mu m; after film coating, the sphericity of the part is required to be smaller than 0.3 mu m, the dimensional tolerance of sphere diameter is +/-0.5 mu m, and the surface roughness Ra0.025 mu m; the working gap of the hemispherical part is 1-2 mu m, and the working gap of the hemispherical part and the spherical bowl is ensured while the dimensional accuracy of the hemispherical part is ensured.
The traditional detection method of the hemispherical part is that the hemispherical part is directly placed on an independent tool for clamping the hemispherical part, an M3 threaded hole is formed in the upper surface of the tool, and the tool is positioned by forming threaded connection with an internal thread of a measuring machine working table surface for fixing clamping through an M8 bolt external thread at the lower end of the tool. Every hemisphere part all needs to use the manual pine of screwdriver, fastening set screw clamping M3 screw hole on the frock, realizes the installation work of hemisphere part, and the clamping time consuming time of part is longer. In the detection process, a three-coordinate measuring machine is used for picking up measuring elements, a measuring program is established, and a measuring needle of the measuring machine detects according to the measuring program, so that the measuring work of the hemispherical part is realized. The measuring needle of the three-coordinate measuring machine moves, and the hemispherical part is clamped on the tool and is fixed, so that independent detection work of the hemispherical part is realized.
On the other hand, each hemispherical part is clamped by using a screw driver to be manually loosened and tightened, so that the detection efficiency of the hemispherical parts is limited, the detection method is not suitable for batch production and detection of the hemispherical parts, and a large gap exists between the detection method and modern production and processing.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: overcomes the defects of the prior art and provides a detection device for detecting hemispherical parts by magnetic clamping.
The technical scheme of the invention is as follows: detection device of hemisphere class part is detected in magnetic force clamping includes: the device comprises a detection substrate, a threaded connecting shaft, a magnetic clamping block, a pressing plate, a support column, a leaning block and a three-coordinate measuring machine flat plate;
the three-coordinate measuring machine flat plate is provided with a plurality of mounting holes, the detection substrate is placed on the three-coordinate measuring machine flat plate, and two sides of the detection substrate are attached to the leaning blocks arranged on the mounting holes, so that the detection substrate can be positioned at the position of the three-coordinate measuring machine flat plate;
the upper surface of the detection substrate is provided with a thread positioning hole, and the side surface of the detection substrate is provided with a long groove; the support column is arranged in a mounting hole of the three-coordinate measuring machine flat plate, one end of the pressing plate is sleeved with the locked support column, and the other end of the pressing plate is inserted into a long groove on the side surface of the detection substrate to be tightly pressed, so that the position clamping and fixing of the detection substrate on the three-coordinate measuring machine flat plate are realized; the threaded connecting shaft is in threaded connection and fixed with a threaded positioning hole of the detection substrate; and sequentially placing the hemispherical parts to be detected on the threaded connecting shaft, and clamping the magnetic clamping blocks and the threaded connecting shaft through magnetic attraction to fix the hemispherical parts, and detecting the hemispherical parts on the substrate through a three-coordinate measuring machine to accurately detect the size and shape and position parameters of the hemispherical parts to be detected.
The mounting holes on the three-coordinate measuring machine flat plate are a plurality of equidistant fixed internal thread mounting holes which are arranged in a matrix.
The three leaning blocks are cylindrical with external threads at the bottom, two leaning blocks are connected into a straight line, the other leaning block and the straight line form a vertical relation and are respectively connected with the mounting holes on the three-coordinate measuring machine flat plate in a threaded mode, the fact that the length edge of the detection substrate (1) is tightly positioned with the straight line formed by connecting the two leaning blocks is guaranteed, the width edge of the detection substrate and the edge of the other leaning block form a vertical edge to be tightly positioned is guaranteed, and the detection substrate is positioned on the three-coordinate measuring machine flat plate.
Two parallel surfaces with the parallelism of not more than 0.002mm are processed at the upper end surface and the lower end surface of the detection substrate, and the parallelism of the upper end surface and the lower end surface of the detection substrate is required to be 0.002-0.004mm.
The support column is a long cylindrical mandrel, the structure is divided into two layers, the upper layer is axially provided with the cylindrical mandrel and is convenient to be matched with the pressing plate for use, and the lower layer is axially provided with external threads consistent with threads of a flat plate mounting hole of the three-coordinate measuring machine.
The number of the support columns is preferably 2, and the number of the pressing plates is consistent with that of the support columns.
The clamp plate is rectangular shape, and one end sets up with support column complex hole, through this hole and the cylinder mandrel clearance fit of support column, and the other end sets up the arch, makes the arch that inserts in the detection base plate elongated slot realize compressing tightly fixedly to the detection base plate through exerting force to the clamp plate.
The fit clearance between the support column and the strip-shaped pressing plate is 0.02-0.03mm.
The threaded connection shaft body is cylindrical, the upper layer is axially provided with a cylinder consistent with the inner hole size of the hemispherical part, so that the hemispherical part can be embedded into the threaded connection shaft, and the lower layer is axially provided with an external thread consistent with the threaded positioning hole of the detection substrate, so that the hemispherical part is conveniently in threaded connection with the detection substrate, and the hemispherical part is positioned on the detection substrate.
The cylindricity of the threaded connecting shaft is 0.001-0.002mm, and the surface roughness Ra0.4-0.6mm.
The number of the threaded connecting shafts is preferably consistent with that of the hemispherical parts to be tested.
After the hemispherical part to be measured is mounted on the threaded connecting shaft, the height clearance between the top surface of the threaded connecting shaft and the top surface of the hemispherical part to be measured is 0.05-0.07mm.
The hemispherical part to be measured is hemispherical, and the middle part of the hemispherical part is provided with a through hole.
The magnetic clamping block is a fastening block with 4N-5N magnetic force, the diameter size is consistent with the outer shape size of the upper layer of the threaded connecting shaft, and the fastening block and the threaded connecting shaft are clamped through magnetic force adsorption, so that the hemispherical part is ensured to be fixed, and the purpose of fixing the hemispherical part is achieved.
Compared with the prior art, the invention has the advantages that:
(1) The invention improves the clamping method of the hemispherical part and realizes the magnetic adsorption clamping of the part;
(2) The invention reduces the clamping time of the parts and realizes the batch one-time clamping of hemispherical parts;
(3) The invention saves labor cost and can realize one-key detection of hemispherical parts.
Drawings
FIG. 1 is a schematic diagram of a detection apparatus according to the present invention;
FIG. 2 is a schematic diagram of a detection substrate according to the present invention;
FIG. 3 is a schematic view of a threaded connection of the present invention;
FIG. 4 is a schematic view of a magnetic clamping block of the present invention;
FIG. 5 is a schematic diagram of a hemispherical part;
FIG. 6 is a schematic view of a backrest of the present invention;
FIG. 7 is a schematic diagram of the cooperation of the positioning stud and the detection substrate according to the present invention;
FIG. 8 is a schematic view of a platen of the present invention;
FIG. 9 is a schematic diagram of a support column of the present invention;
fig. 10 is a schematic diagram of a marble Dan Pingban of the present invention;
FIG. 11 is a schematic view of the platen of the present invention after installation;
fig. 12 is a schematic diagram of the installation of the detection device of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures to which the invention pertains.
As shown in fig. 1, the detection device of the invention comprises a detection substrate 1, a threaded connecting shaft 2, a magnetic clamping block 3, a pressing plate 4, a support column 5, a leaning block 6 and a three-coordinate measuring machine flat plate 7. On one hand, the clamping mode of the hemispherical part is improved, and the magnetic locking, positioning and clamping are realized; on the other hand, improve traditional detection mode, through the preparation detection base plate 1 with threaded connection axle 2 screw-thread fit, magnetic force clamp piece 3 is through magnetic force locking part, clamp plate 4 and support column 5 clearance fit compress tightly detection base plate 1, form the installation of hemisphere class part's detection device. The detection substrate 1 is attached to the abutment 6, the two abutments are connected in a straight line, and one abutment is in a vertical relationship with the straight line, so that the positioning of the detection substrate 1 on the three-coordinate measuring machine plate 7 is ensured. Two pressing plates of the pressing plate 4 are inserted into any two parts of four rectangular clamping long grooves machined on the detection substrate 1, and the detected hemispherical parts on the detection substrate 1 are tightly matched with the threaded connecting shaft 2 under the magnetic clamping of the magnetic clamping block 3. Under the condition of determining the position of the part, the clamping of the part is realized, batch detection is realized, and the magnetic clamping detection is realized while the detection efficiency of the hemispherical part is improved.
The detection substrate 1 shown in fig. 2 is a mounting base, the hemispherical part is shown in fig. 5 (is hemispherical, and the middle is provided with a through hole), and the hemispherical part on the threaded connection shaft is positioned on the detection substrate by matching and clamping the threaded connection shaft shown in fig. 3 and the magnetic clamping block shown in fig. 4.
The detection substrate 1 is rectangular, the upper surface of the detection substrate is provided with a plurality of positioning threaded holes according to the part positioning requirement, the detection substrate is in threaded connection with the threaded connection shaft 2, the hemispherical parts can be ensured to be embedded into the threaded connection shaft for installation, and the number of the hemispherical parts can be automatically adjusted according to the sizes of the detection substrate and the hemispherical parts. Two parallel surfaces with the parallelism of 0.002mm are processed at the upper end surface and the lower end surface of the detection substrate 1, the upper end surface of the detection substrate 1 is contacted with the leaning blocks 6 (three leaning blocks), wherein two leaning blocks are connected into a straight line, the other leaning block is in a perpendicular relation with the straight line formed by the two leaning blocks, and the detection substrate 1 is leaning against the leaning blocks 6 (shown in figure 6) to finish the positioning of the detection substrate 1. The middle position of the detection substrate 1 is provided with four rectangular clamping long grooves, so that the pressing plate 4 can be positioned and clamped conveniently.
As shown in fig. 3, the threaded connecting shaft 2 is cylindrical, the structure is divided into two layers, the upper layer is axially provided with a cylinder with the same size as the inner hole of the hemispherical part, the cylindricity of the threaded connecting shaft is 0.001-0.002mm, the upper layer cylinder is ensured not to have taper, and the surface roughness Ra0.4-0.6mm. The hemispherical part can be embedded into the threaded connecting shaft 2, and the lower layer is provided with external threads consistent with the threads of the detection substrate 1 along the axial direction, so that the hemispherical part is conveniently in threaded connection with the detection substrate 1, and the hemispherical part is positioned on the detection substrate 1.
As shown in fig. 9, the two support columns 5 are long cylindrical spindles, the structure is divided into two layers, the upper layer is axially provided with a cylindrical spindle with the diameter of phi 6mm, the cylindrical spindle is convenient to be matched with the pressing plate 4, the lower layer is axially provided with external threads consistent with threads of the three-coordinate measuring machine flat plate 7, the external threads are convenient to be connected with the detection substrate 1 in a threaded manner, and the purpose of clamping and fixing the detection substrate 1 at the position of the marble flat plate 7 is realized.
As shown in fig. 8, the two pressing plates 4 are in a long strip shape, an inner hole with the diameter of phi 6mm is machined on the pressing plates, the pressing plates are in clearance fit with a cylindrical mandrel with the diameter of phi 6mm of the supporting column 5, the fit clearance is higher than 0.02-0.03mm, when the detection substrate 1 is tightly attached to the leaning block 6, the pressing plates 4 are inserted into any two parts in four rectangular clamping long grooves machined on the detection substrate 1 to apply force to the pressing plates, and then the purpose of pressing and fixing the detection substrate 1 is achieved.
The clamping of the detection substrate, shown in fig. 11, is realized by matching the pressing plate with the support column and by means of threaded connection of the mandrel of the support column and the three-coordinate measuring machine flat plate, as shown in fig. 10, the clamping of the detection substrate is realized by the three-coordinate measuring machine flat plate 7 which is provided with a plurality of equidistant fixed internal thread mounting holes arranged in a matrix, and the threaded connection and the positioning of the support column 5 and the leaning block 6 on the three-coordinate measuring machine flat plate 7 are realized.
After the hemispherical part is arranged on the threaded connecting shaft on the detection substrate according to the part number, the hemispherical part is pressed on the threaded connecting shaft by the magnetic clamping block, so that the purpose of fixing the hemispherical part is achieved. The magnetic clamping block 3 is a fastening block with 4N-5N magnetic force, the diameter size is consistent with the outer shape size of the upper layer of the threaded connecting shaft 2, and the fastening block is clamped with the threaded connecting shaft 2 through magnetic force absorption, so that the hemispherical part is ensured to be fixed, and the purpose of fixing the hemispherical part is achieved. The clamping meets the design requirement while ensuring that the detected hemispherical part on the detection substrate 1 is tightly matched with the threaded connecting shaft 2 under the magnetic clamping of the magnetic clamping block 3 and limiting the degree of freedom of the detected hemispherical part.
The detection substrate is a mounting foundation of hemispherical parts, the position of the detection substrate is positioned by a leaning block as shown in fig. 7, and the detection substrate is tightly pressed on the plane of the marble slab by the cooperation of the pressing plate and the supporting column as shown in fig. 11. The positions of the detection substrate and the hemispherical part are not moved in the detection process, and the purposes of positioning and clamping the hemispherical part and the detection substrate are achieved.
After the above steps are completed, the detection substrate is used as a positioning reference, and three-coordinate stylus picking points are shown in fig. 12 and a coordinate system is established. After programming, all hemispherical parts mounted on the substrate can be detected, and after detection is completed, the hemispherical parts can be directly replaced without reestablishing a coordinate system, so that the detection time is greatly shortened.
The specific detection method comprises the following steps:
1. positioning the detection substrate by using a three-coordinate measuring machine, namely establishing a coordinate system by using the axis of the detection substrate and the plane of the detection substrate as references;
2. setting tool parameters of a detection device, and enabling the hemispherical parts which are uniformly distributed to move to a detection position at a fixed angle and a moving speed;
3. and (3) programming a detection program, enabling the measuring needle to detect parameters such as the size, sphericity, eccentricity and the like of the hemispherical part according to a fixed path (namely, the programmed detection program is executed, and programming sentences) and setting the number of the detected parts. When the detection of the parts is finished, the measuring needle automatically leaves, the magnetic adsorption high-efficiency clamping is realized, the one-key measurement is realized, and the parts are sequentially detected until all the parts are detected. The one-key measurement is the self-contained instruction key position (CTRL+F9) of the three-coordinate measuring machine, and the coordinate system process is not needed to be executed by the detection process.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the present invention.
Claims (13)
1. Detection device for detecting hemispherical parts by magnetic clamping, which is characterized by comprising the following components: the device comprises a detection substrate, a threaded connecting shaft, a magnetic clamping block, a pressing plate, a support column, a leaning block and a three-coordinate measuring machine flat plate;
the three-coordinate measuring machine flat plate is provided with a plurality of mounting holes, the detection substrate is placed on the three-coordinate measuring machine flat plate, and two sides of the detection substrate are attached to the leaning blocks arranged on the mounting holes, so that the detection substrate can realize the position positioning on the three-coordinate measuring machine flat plate;
the upper surface of the detection substrate is provided with a thread positioning hole, and the side surface of the detection substrate is provided with a long groove; the support column is arranged in a mounting hole of the three-coordinate measuring machine flat plate, one end of the pressing plate is sleeved with the locked support column, and the other end of the pressing plate is inserted into a long groove on the side surface of the detection substrate to be tightly pressed, so that the position clamping and fixing of the detection substrate on the three-coordinate measuring machine flat plate are realized; the threaded connecting shaft is fixedly connected with the threaded positioning hole of the detection substrate in a threaded manner; placing the hemispherical parts to be detected on a threaded connecting shaft in sequence, and clamping the magnetic clamping blocks and the threaded connecting shaft through magnetic attraction to fix the hemispherical parts, and detecting the hemispherical parts on the detection substrate through a three-coordinate measuring machine to accurately detect the size and shape and position parameters of the hemispherical parts to be detected;
the threaded connection shaft body is cylindrical, the upper layer is axially provided with a cylinder consistent with the inner hole size of the hemispherical part, so that the hemispherical part can be embedded into the threaded connection shaft, and the lower layer is axially provided with an external thread consistent with the threaded positioning hole of the detection substrate, so that the hemispherical part is conveniently in threaded connection with the detection substrate, and the hemispherical part is positioned on the detection substrate.
2. The detection apparatus according to claim 1, wherein: the mounting holes on the three-coordinate measuring machine flat plate are a plurality of equidistant fixed internal thread mounting holes which are arranged in a matrix.
3. The detection apparatus according to claim 1, wherein: the three leaning blocks are cylindrical with external threads at the bottom, two leaning blocks are connected into a straight line, the other leaning block and the straight line form a vertical relation and are respectively connected with the mounting holes on the three-coordinate measuring machine flat plate in a threaded mode, the fact that the length edge of the detection substrate (1) is tightly positioned with the straight line formed by connecting the two leaning blocks is guaranteed, the width edge of the detection substrate and the edge of the other leaning block form a vertical edge to be tightly positioned is guaranteed, and the detection substrate is positioned at the position of the three-coordinate measuring machine flat plate.
4. The detection apparatus according to claim 1, wherein: two parallel surfaces with the parallelism of not more than 0.002mm are processed at the upper end surface and the lower end surface of the detection substrate, and the parallelism of the upper end surface and the lower end surface of the detection substrate is required to be 0.002-0.004mm.
5. The detection apparatus according to claim 1, wherein: the support column is a long cylindrical mandrel, the structure is divided into two layers, the upper layer is axially provided with the cylindrical mandrel and is convenient to be matched with the pressing plate for use, and the lower layer is axially provided with external threads consistent with threads of a flat plate mounting hole of the three-coordinate measuring machine.
6. The detection apparatus according to claim 5, wherein: the number of the support columns is preferably 2, and the number of the pressing plates is consistent with that of the support columns.
7. The detection apparatus according to claim 5, wherein: the clamp plate is rectangular shape, and one end sets up with support column complex hole, through this hole and the cylinder mandrel clearance fit of support column, and the other end sets up the arch, makes the arch that inserts in the detection base plate elongated slot realize compressing tightly fixedly to the detection base plate through exerting force to the clamp plate.
8. The detection apparatus according to claim 5, wherein: the fit clearance between the support column and the strip-shaped pressing plate is 0.02-0.03mm.
9. The detection apparatus according to claim 1, wherein: the cylindricity of the threaded connecting shaft is 0.001-0.002mm, and the surface roughness Ra0.4-0.6mm.
10. The detection apparatus according to claim 1, wherein: the number of the threaded connecting shafts is preferably consistent with that of the hemispherical parts to be tested.
11. The detection apparatus according to claim 1, wherein: after the hemispherical part to be measured is mounted on the threaded connecting shaft, the height clearance between the top surface of the threaded connecting shaft and the top surface of the hemispherical part to be measured is 0.05-0.07mm.
12. The detection apparatus according to claim 1, wherein: the hemispherical part to be measured is hemispherical, and the middle part of the hemispherical part is provided with a through hole.
13. The detection apparatus according to claim 1, wherein: the magnetic clamping block is a fastening block with 4N-5N magnetic force, the diameter size is consistent with the outer shape size of the upper layer of the threaded connecting shaft, and the fastening block and the threaded connecting shaft are clamped through magnetic force adsorption, so that the hemispherical part is ensured to be fixed, and the purpose of fixing the hemispherical part is achieved.
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| CN113884041A (en) * | 2021-08-31 | 2022-01-04 | 中国船舶重工集团公司第七0七研究所 | Measuring device and measuring method for rapidly measuring rotor shaft sleeve |
| CN114851103B (en) * | 2022-03-28 | 2024-04-09 | 北京航天控制仪器研究所 | Clamping device for flexibly clamping and detecting workpiece of rotary body motor support assembly |
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| CN109708601A (en) * | 2018-12-28 | 2019-05-03 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of shell part measurement quick clamping device based on magnetic force |
| CN212179842U (en) * | 2020-08-03 | 2020-12-18 | 北京航天控制仪器研究所 | Detection apparatus for intelligent detection hemisphere part of hemisphere class |
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| GB2112522B (en) * | 1981-11-25 | 1985-06-26 | Mitutoyo Mfg Co Ltd | Coordinate measuring machine |
| CN205280019U (en) * | 2015-12-16 | 2016-06-01 | 北京航天控制仪器研究所 | Detection apparatus for be used for taking lug formula work piece |
| CN205438290U (en) * | 2015-12-17 | 2016-08-10 | 上海良基博方汽车发动机零部件制造股份有限公司 | A novel supplementary anchor clamps for three -coordinates measuring |
| CN209279835U (en) * | 2018-11-08 | 2019-08-20 | 沪东重机有限公司 | Three-dimensional coordinates measurement positioning assisting tooling for delivery valve seat detection |
| CN209656002U (en) * | 2019-04-11 | 2019-11-19 | 沈阳实发汽车配件有限公司 | Quick locating support for three coordinate measurement of moulding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109708601A (en) * | 2018-12-28 | 2019-05-03 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of shell part measurement quick clamping device based on magnetic force |
| CN212179842U (en) * | 2020-08-03 | 2020-12-18 | 北京航天控制仪器研究所 | Detection apparatus for intelligent detection hemisphere part of hemisphere class |
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