CN113155064A - Detection apparatus for magnetic force clamping detects hemisphere class part - Google Patents
Detection apparatus for magnetic force clamping detects hemisphere class part Download PDFInfo
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- CN113155064A CN113155064A CN202110145712.2A CN202110145712A CN113155064A CN 113155064 A CN113155064 A CN 113155064A CN 202110145712 A CN202110145712 A CN 202110145712A CN 113155064 A CN113155064 A CN 113155064A
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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
- 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
Abstract
The invention discloses a detection device for detecting hemispherical parts by magnetic clamping. The device comprises a detection substrate (1), a threaded connection 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 base of parts, a plurality of threaded positioning holes are machined in the upper surface of the detection substrate according to part positioning requirements, the threaded connecting shaft (2) is positioned on the detection substrate (1) through threaded connection, the hemispherical parts are placed on the threaded connecting shaft (2), the magnetic clamping block (3) is tightly connected with the threaded connecting shaft (2) through magnetic force, and the parts are ensured to be fixed relatively. The detection substrate (1) is attached to the abutting block (6), and the pressing plate (4) and the supporting column (5) are matched to compress the detection substrate (1). The relative position of the detection substrate (1) on the flat plate (7) of the three-coordinate measuring machine is ensured, so that the purposes of ensuring the tight clamping of parts and fixing the position of the detection device are achieved.
Description
Technical Field
The invention relates to a detection device for detecting hemispherical parts by magnetic clamping, in particular to research on the detection device for detecting the hemispherical parts by magnetic clamping, and belongs to the field of aerospace navigation application.
Background
The hemispherical part is a motor bearing adopting a hemispherical bearing coupling part, a TiN + DLC film layer is plated on the surface of the part, and the accuracy and the service life of the motor are directly determined by the spherical profile (hereinafter referred to as sphericity) and the dimensional accuracy of the part. The higher the sphericity is, the smaller the start-stop friction torque of the motor is, the higher the stability and the service life of the motor are, and the lower the sphericity is, the worse the start-stop service life and the operation stability are; theoretically, the smaller the working clearance of the motor bearing is, the larger the air floatation pressure of the bearing is, and the stronger the bearing capacity of the bearing is. The sphericity and clearance of the ball-and-socket coupling are therefore the main factors affecting the performance of the machine.
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 substrate is required to be less than 1 mu m before film coating, and the surface roughness Ra0.025 mu m; after coating, the sphericity of the part is required to be less than 0.3 μm, the tolerance of the sphere diameter size is +/-0.5 μm, and the surface roughness is Ra0.025 μm; the working clearance of the hemispherical part is 1-2 mu m, and the working clearance of the hemisphere and the ball 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 special for clamping the hemispherical part, an M3 threaded hole is formed in the upper surface of the tool, and the external thread of an M8 bolt at the lower end of the tool is in threaded connection with the internal thread of a workbench surface of a measuring machine for fixing and clamping, so that tool positioning is realized. And each hemispherical part needs to be manually loosened and fastened by using a screwdriver in an M3 threaded hole on the tool to realize the mounting work of the hemispherical part, and the clamping of the part consumes a long time. 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 is used for detecting according to the measuring program, so that the measuring work of the hemispherical part is realized. The measuring pin of the three-coordinate measuring machine moves, and the hemispherical part is clamped on the tool and fixed, so that the independent detection work of the hemispherical part is realized.
On the other hand, each hemispherical part needs to be manually clamped by loosening and tightening screws by using a screwdriver, so that the detection efficiency of the hemispherical parts is limited, the hemispherical parts are not suitable for batch production detection work, and the gap between the hemispherical parts and modern production processing is large.
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 detection device for detecting the hemispherical parts through magnetic clamping is provided.
The technical solution of the invention is as follows: the utility model provides a detection apparatus for magnetic force clamping detects hemisphere class part, includes: the device comprises a detection substrate, a threaded connecting shaft, a magnetic clamping block, a pressing plate, a supporting 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 edges of the detection substrate are attached to the leaning blocks arranged on the mounting holes, so that the detection substrate is positioned on the three-coordinate measuring machine flat plate;
the upper surface of the detection substrate is provided with a threaded positioning hole, and the side surface of the detection substrate is provided with a long groove; the supporting column is arranged in a mounting hole of a three-coordinate measuring machine flat plate, one end of the pressing plate is sleeved into the locked supporting 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 pressed tightly, 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; the measured hemispherical part is placed on the threaded connecting shaft in sequence, the magnetic clamping block and the threaded connecting shaft are clamped through magnetic adsorption, so that the hemispherical part is fixed, the hemispherical part on the detection substrate is detected through the three-coordinate measuring machine, and the accurate detection of the size and the form and position parameters of the measured hemispherical part is realized.
The mounting holes on the flat plate of the three-coordinate measuring machine are a plurality of fixed internal thread mounting holes which are arranged in a matrix and are arranged at equal intervals.
The three rest blocks are cylindrical, the bottoms of the rest blocks are provided with external threads, the two rest blocks are connected into a straight line, the other rest block and the straight line form a vertical relation and are respectively in threaded connection with mounting holes in a flat plate of the three-coordinate measuring machine, the straight line formed by connecting the length edge of the detection substrate (1) and the two rest blocks is ensured to be abutted and positioned, the vertical edge of the width edge of the detection substrate and the other rest block edge form vertical edge abutment and positioning, and the detection substrate is enabled to be positioned on the flat plate of the three-coordinate measuring machine.
Two parallel surfaces with the parallelism of not more than 0.002mm are processed at the upper and lower end surfaces of the detection substrate, and the parallelism of the upper and lower end surfaces of the detection substrate is required to be 0.002-0.004 mm.
The support column is a long cylindrical mandrel, the structure is divided into two layers, the upper layer is provided with the cylindrical mandrel along the axial direction and is convenient to be matched with a pressing plate for use, and the lower layer is provided with external threads consistent with the threads of the flat mounting hole of the three-coordinate measuring machine along the axial direction.
The number of the supporting columns is preferably 2, and the number of the pressing plates is consistent with that of the supporting columns.
The pressing plate is in a long strip shape, one end of the pressing plate is provided with an inner hole matched with the support column, the inner hole is in clearance fit with the cylindrical mandrel of the support column, the other end of the pressing plate is provided with a bulge, and the bulge inserted into the long groove of the detection substrate is enabled to compress and fix the detection substrate through force application to the pressing plate.
The fit clearance between the support column and the strip-shaped press plate is 0.02-0.03 mm.
The threaded connection axle main part be cylindrical, the upper strata is equipped with the cylinder unanimous with hemisphere part hole size along the axial, makes hemisphere part embedding threaded connection axle in, the lower floor is equipped with along the axial and detects the external screw thread that base plate thread locating hole is unanimous, be convenient for with detect base plate threaded connection, make hemisphere part position location on detecting the base plate.
The cylindricity of the threaded connecting shaft is 0.001-0.002mm, and the surface roughness Ra0.4-0.6 mm.
The number of the threaded connecting shafts is preferably consistent with that of the hemispherical parts to be measured.
After the threaded connecting shaft is provided with the tested hemispherical part, the height gap between the top surface of the threaded connecting shaft and the top surface of the tested part is 0.05-0.07 mm.
The measured hemispherical part is hemispherical and is provided with a through hole in the middle.
The magnetic clamping block is a fastening block with 4N-5N magnetic force, the diameter size of the magnetic clamping block is consistent with the external shape size of the upper layer of the threaded connecting shaft, and the magnetic clamping block and the threaded connecting shaft are clamped through magnetic adsorption to ensure that the hemispherical part is fixed, so that 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 batch one-time clamping of the hemispherical parts;
(3) the invention saves labor cost and can realize one-click detection of the hemispherical part.
Drawings
FIG. 1 is a schematic view of a detection apparatus according to the present invention;
FIG. 2 is a schematic view of a detection substrate according to the present invention;
FIG. 3 is a schematic view of a threaded coupling shaft of the present invention;
FIG. 4 is a schematic view of the magnetic clamping block of the present invention;
FIG. 5 is a schematic view of a hemispherical part;
FIG. 6 is a schematic view of a cam of the present invention;
FIG. 7 is a schematic view of the positioning block and the detection substrate of the present invention;
FIG. 8 is a schematic view of a platen of the present invention;
FIG. 9 is a schematic view of a support post of the present invention;
fig. 10 is a schematic view of a marble slab of the present invention;
FIG. 11 is a schematic view of the platen of the present invention after installation;
fig. 12 is a schematic view of the installation of the detecting device of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution to which the present invention relates.
As shown in FIG. 1, the detection device of the invention comprises a detection substrate 1, a threaded connection shaft 2, a magnetic clamping block 3, a pressing plate 4, a support column 5, a rest block 6 and a three-coordinate measuring machine flat plate 7. On one hand, the clamping mode of the hemispherical part is improved, and magnetic locking, positioning and clamping are realized; on the other hand, improve traditional detection mode, detect base plate 1 and 2 screw-thread fit of threaded connection axle through the preparation, the tight piece of magnetic force clamp 3 passes through magnetic force locking part, and clamp plate 4 compresses tightly detection base plate 1 with 5 clearance fit of support column, forms hemisphere class part's detection device's installation. The detection substrate 1 is attached to the leaning blocks 6, the two leaning blocks are connected into a straight line, and one leaning block and the straight line form a vertical relation to ensure the positioning of the detection substrate 1 on the flat plate 7 of the three-coordinate measuring machine. Two pressing plates of the pressing plate 4 are inserted into any two positions of four rectangular clamping long grooves processed on the detection substrate 1, so that the detected hemispherical part on the detection substrate 1 is ensured to be 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 part clamping and batch detection are 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, and the hemispherical part is shown in fig. 5 (is hemispherical, and has a through hole in the middle), and the threaded connection shaft shown in fig. 3 and the magnetic clamping block shown in fig. 4 are clamped in a matching manner, so that the hemispherical part on the threaded connection shaft is positioned on the detection substrate.
The detection substrate 1 is rectangular, the upper surface of the detection substrate is as shown in fig. 2, a plurality of positioning threaded holes are processed according to the part positioning requirement and are in threaded connection with the threaded connection shaft 2, the hemispherical parts can 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 backup blocks 6 (three backup blocks), wherein the two backup blocks are connected into a straight line, the other backup block and the straight line formed by the two backup blocks form a vertical relation, and the detection substrate 1 is positioned by the backup blocks 6 (as shown in figure 6). Four rectangular clamping long grooves are processed in the middle of the detection substrate 1, so that the pressing plate 4 can be conveniently positioned and clamped.
As shown in figure 3, the threaded connection shaft 2 is cylindrical, the structure is divided into two layers, a cylinder with the same size as the inner hole of the hemispherical part is arranged on the upper layer along the axial direction, the cylindricity of the threaded connection shaft is 0.001-0.002mm, the upper layer cylinder cannot have conicity, and the surface roughness Ra0.4-0.6 mm. Make hemisphere part can imbed in threaded connection axle 2, the lower floor is equipped with along the axial with the external screw thread unanimous of 1 screw thread of detection base plate, be convenient for with 1 threaded connection of detection base plate, make hemisphere part position location on detection base plate 1.
As shown in fig. 9, two support columns 5 are long cylindrical mandrels, the structure is divided into two layers, the upper layer is provided with a cylindrical mandrel with the diameter of phi 6mm along the axial direction, the cylindrical mandrel is convenient to use in cooperation with a pressing plate 4, the lower layer is provided with an external thread which is consistent with the thread of a flat plate 7 of a three-coordinate measuring machine along the axial direction, the external thread is convenient to be connected with a detection substrate 1 in a threaded manner, and the purpose of clamping and fixing the position of the detection substrate 1 on the flat plate 7 of marble is realized.
As shown in fig. 8, two of the pressing plates 4 are strip-shaped, one inner hole with the diameter of phi 6mm is processed on the pressing plate, the inner hole is in clearance fit with the cylindrical mandrel with the diameter of phi 6mm of the supporting column 5, the fit clearance is prior to 0.02-0.03mm, and after the detection substrate 1 is tightly attached to the leaning block 6, the pressing plate 4 is inserted into any two of the four rectangular clamping elongated slots processed on the detection substrate 1 to apply force to the pressing plate, so that the purposes of compressing and fixing the detection substrate 1 are achieved.
The clamping of the detection substrate is realized by matching the pressing plate and the supporting column shown in fig. 11 and connecting the mandrel of the supporting column with the flat plate of the three-coordinate measuring machine in a threaded manner, the clamping of the detection substrate is realized as shown in fig. 10, the flat plate 7 of the three-coordinate measuring machine is provided with a plurality of fixed internal thread mounting holes which are arranged in a matrix and are arranged at equal intervals, and the threaded connection and positioning of the supporting column 5 and the leaning block 6 on the flat plate 7 of the three-coordinate measuring machine are realized.
After the hemispherical part is arranged in the threaded connecting shaft on the detection substrate according to the part number, the magnetic clamping block presses the hemispherical part on the threaded connecting shaft, 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 of the magnetic clamping block is consistent with the external shape size of the upper layer of the threaded connecting shaft 2, and the magnetic clamping block and the threaded connecting shaft 2 are clamped through magnetic adsorption, so that the hemispherical part is ensured to be fixed, and the purpose of fixing the hemispherical part is achieved. 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, the freedom degree of the detected hemispherical part is limited, and the clamping meets the design requirement.
The detection substrate is an installation base of the hemispherical part, the position of the detection substrate is positioned by the leaning block as shown in fig. 7 during positioning, and the pressing plate and the supporting column are matched to press the detection substrate on the plane of the marble slab as shown in fig. 11. The positions of the detection substrate and the hemispherical part are ensured not to move 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 a coordinate system is established by taking a three-coordinate measuring probe as shown in fig. 12. After the program is programmed, all hemispherical parts mounted on the substrate can be detected, and after the detection is finished, 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 uniformly distributed hemispherical parts to move to detection positions at a fixed angle and a moving speed;
3. and writing a detection program, enabling the measuring probe to detect parameters such as the size, the sphericity, the eccentricity and the like of the hemispherical part according to a fixed path (namely executing a programmed sentence according to the written detection program), and setting the number of the detection parts. When the part detection is finished, the measuring pin automatically leaves, the magnetic adsorption efficient clamping is realized, one-key measurement is carried out, and the detection is carried out in sequence until all parts are detected. The 'one-key measurement' is a key position (CTRL + F9) with instructions of the three-coordinate measuring machine, and the coordinate system process is not required to be executed in 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 thereby, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the protection scope of the present invention.
Claims (14)
1. The utility model provides a detection apparatus for magnetic force clamping detects hemisphere class part which characterized in that includes: the device comprises a detection substrate, a threaded connecting shaft, a magnetic clamping block, a pressing plate, a supporting 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 edges of the detection substrate are attached to the leaning blocks arranged on the mounting holes, so that the detection substrate is positioned on the three-coordinate measuring machine flat plate;
the upper surface of the detection substrate is provided with a threaded positioning hole, and the side surface of the detection substrate is provided with a long groove; the supporting column is arranged in a mounting hole of a three-coordinate measuring machine flat plate, one end of the pressing plate is sleeved into the locked supporting 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 pressed tightly, 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 a threaded positioning hole of the detection substrate in a threaded manner; the measured hemispherical part is placed on the threaded connecting shaft in sequence, the magnetic clamping block and the threaded connecting shaft are clamped through magnetic adsorption, so that the hemispherical part is fixed, the hemispherical part on the detection substrate is detected through the three-coordinate measuring machine, and the accurate detection of the size and the form and position parameters of the measured hemispherical part is realized.
2. The detection device according to claim 1, wherein: the mounting holes on the flat plate of the three-coordinate measuring machine are a plurality of fixed internal thread mounting holes which are arranged in a matrix and are arranged at equal intervals.
3. The detection device according to claim 1, wherein: the detection substrate (1) is characterized in that the leaning blocks are three cylinders with external threads at the bottoms, two leaning blocks are connected into a straight line, the other leaning block and the straight line form a vertical relation and are respectively in threaded connection with mounting holes in a three-coordinate measuring machine flat plate, the straight line formed by connecting the length edge of the detection substrate (1) and the two leaning blocks is ensured to be leaned against and positioned, the vertical edge formed by the width edge of the detection substrate and the other leaning block edge is leaned against and positioned, and the detection substrate is enabled to be positioned at the position of the three-coordinate measuring machine flat plate.
4. The detection device according to claim 1, wherein: two parallel surfaces with the parallelism of not more than 0.002mm are processed at the upper and lower end surfaces of the detection substrate, and the parallelism of the upper and lower end surfaces of the detection substrate is required to be 0.002-0.004 mm.
5. The detection device according to claim 1, wherein: the support column is a long cylindrical mandrel, the structure is divided into two layers, the upper layer is provided with the cylindrical mandrel along the axial direction and is convenient to be matched with a pressing plate for use, and the lower layer is provided with external threads consistent with the threads of the flat mounting hole of the three-coordinate measuring machine along the axial direction.
6. The detection device according to claim 5, wherein: the number of the supporting columns is preferably 2, and the number of the pressing plates is consistent with that of the supporting columns.
7. The detection device according to claim 5, wherein: the pressing plate is in a long strip shape, one end of the pressing plate is provided with an inner hole matched with the support column, the inner hole is in clearance fit with the cylindrical mandrel of the support column, the other end of the pressing plate is provided with a bulge, and the bulge inserted into the long groove of the detection substrate is enabled to compress and fix the detection substrate through force application to the pressing plate.
8. The detection device according to claim 5, wherein: the fit clearance between the support column and the strip-shaped press plate is 0.02-0.03 mm.
9. The detection device according to claim 1, wherein: the threaded connection axle main part be cylindrical, the upper strata is equipped with the cylinder unanimous with hemisphere part hole size along the axial, makes hemisphere part embedding threaded connection axle in, the lower floor is equipped with along the axial and detects the external screw thread that base plate thread locating hole is unanimous, be convenient for with detect base plate threaded connection, make hemisphere part position location on detecting the base plate.
10. The detection device according to claim 9, wherein: the cylindricity of the threaded connecting shaft is 0.001-0.002mm, and the surface roughness Ra0.4-0.6 mm.
11. The detection device according to claim 9, wherein: the number of the threaded connecting shafts is preferably consistent with that of the hemispherical parts to be measured.
12. The detection device according to claim 9, wherein: after the threaded connecting shaft is provided with the tested hemispherical part, the height gap between the top surface of the threaded connecting shaft and the top surface of the tested part is 0.05-0.07 mm.
13. The detection device according to claim 1, wherein: the measured hemispherical part is hemispherical and is provided with a through hole in the middle.
14. The detection device according to claim 1, wherein: the magnetic clamping block is a fastening block with 4N-5N magnetic force, the diameter size of the magnetic clamping block is consistent with the external shape size of the upper layer of the threaded connecting shaft, and the magnetic clamping block and the threaded connecting shaft are clamped through magnetic adsorption to ensure that the hemispherical part is fixed, so that the purpose of fixing the hemispherical part is achieved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110145712.2A CN113155064B (en) | 2021-02-02 | 2021-02-02 | Detection device for detecting hemispherical parts by magnetic clamping |
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| CN202110145712.2A CN113155064B (en) | 2021-02-02 | 2021-02-02 | Detection device for detecting hemispherical parts by magnetic clamping |
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| CN113155064B CN113155064B (en) | 2023-06-06 |
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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 |
| CN114851103A (en) * | 2022-03-28 | 2022-08-05 | 北京航天控制仪器研究所 | Clamping device for flexibly clamping and detecting workpiece of motor bracket component of revolving body |
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| CN113155064B (en) | 2023-06-06 |
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